844 results on '"S. Beattie"'
Search Results
2. ATF3 is a neuron‐specific biomarker for spinal cord injury and ischaemic stroke
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Jonathan Z. Pan, Zhanqiang Wang, Wei Sun, Peipei Pan, Wei Li, Yongtao Sun, Shoulin Chen, Amity Lin, Wulin Tan, Liangliang He, Jacob Greene, Virginia Yao, Lijun An, Rich Liang, Qifeng Li, Jessica Yu, Lingyi Zhang, Nikolaos Kyritsis, Xuan Duong Fernandez, Sara Moncivais, Esmeralda Mendoza, Pamela Fung, Gongming Wang, Xinhuan Niu, Qihang Du, Zhaoyang Xiao, Yuwen Chang, Peiyuan Lv, J. Russell Huie, Abel Torres‐Espin, Adam R. Ferguson, Debra D. Hemmerle, Jason F. Talbott, Philip R. Weinstein, Lisa U. Pascual, Vineeta Singh, Anthony M. DiGiorgio, Rajiv Saigal, William D. Whetstone, Geoffrey T. Manley, Sanjay S. Dhall, Jacqueline C. Bresnahan, Mervyn Maze, Xiangning Jiang, Neel S. Singhal, Michael S. Beattie, Hua Su, and Zhonghui Guan
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activating transcription factor 3 (ATF3) ,biomarker ,neuronal injury ,neuroprotection ,spinal cord injury ,stroke ,Medicine (General) ,R5-920 - Abstract
Abstract Background Although many molecules have been investigated as biomarkers for spinal cord injury (SCI) or ischemic stroke, none of them are specifically induced in central nervous system (CNS) neurons following injuries with low baseline expression. However, neuronal injury constitutes a major pathology associated with SCI or stroke and strongly correlates with neurological outcomes. Biomarkers characterized by low baseline expression and specific induction in neurons post‐injury are likely to better correlate with injury severity and recovery, demonstrating higher sensitivity and specificity for CNS injuries compared to non‐neuronal markers or pan‐neuronal markers with constitutive expressions. Methods In animal studies, young adult wildtype and global Atf3 knockout mice underwent unilateral cervical 5 (C5) SCI or permanent distal middle cerebral artery occlusion (pMCAO). Gene expression was assessed using RNA‐sequencing and qRT‐PCR, while protein expression was detected through immunostaining. Serum ATF3 levels in animal models and clinical human samples were measured using commercially available enzyme‐linked immune‐sorbent assay (ELISA) kits. Results Activating transcription factor 3 (ATF3), a molecular marker for injured dorsal root ganglion sensory neurons in the peripheral nervous system, was not expressed in spinal cord or cortex of naïve mice but was induced specifically in neurons of the spinal cord or cortex within 1 day after SCI or ischemic stroke, respectively. Additionally, ATF3 protein levels in mouse blood significantly increased 1 day after SCI or ischemic stroke. Importantly, ATF3 protein levels in human serum were elevated in clinical patients within 24 hours after SCI or ischemic stroke. Moreover, Atf3 knockout mice, compared to the wildtype mice, exhibited worse neurological outcomes and larger damage regions after SCI or ischemic stroke, indicating that ATF3 has a neuroprotective function. Conclusions ATF3 is an easily measurable, neuron‐specific biomarker for clinical SCI and ischemic stroke, with neuroprotective properties. Highlights ATF3 was induced specifically in neurons of the spinal cord or cortex within 1 day after SCI or ischemic stroke, respectively. Serum ATF3 protein levels are elevated in clinical patients within 24 hours after SCI or ischemic stroke. ATF3 exhibits neuroprotective properties, as evidenced by the worse neurological outcomes and larger damage regions observed in Atf3 knockout mice compared to wildtype mice following SCI or ischemic stroke.
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- 2024
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3. The epidemiology of HIV infection among female sex workers in Nairobi, Kenya: A structural determinants and life-course perspective.
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Tara S Beattie, Wendy Adhiambo, Rhoda Kabuti, Alicja Beksinska, Pauline Ngurukiri, Hellen Babu, Mary Kung'u, Chrispo Nyamweya, Anne Mahero, Maisha Fiti Study -Champions, Erastus Irungu, Peter Muthoga, Janet Seeley, Joshua Kimani, Helen A Weiss, and Rupert Kaul
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Public aspects of medicine ,RA1-1270 - Abstract
High HIV prevalence among female sex workers (FSWs) is heavily influenced by structural determinants (e.g. criminalisation of sex work; violence) and significant life events (e.g. orphanhood, teenage pregnancy). This study aims to understand the epidemiology of HIV among FSWs in Nairobi, Kenya using a structural determinants and life-course perspective. Baseline cross-sectional survey data were collected June-December 2019 for the Maisha Fiti study with 1003 FSWs (aged 18-45 years). Odds ratios and 95% confidence intervals were estimated using multivariable logistic regression with a hierarchical modelling approach. HIV prevalence was 28.0%, and increased with age (
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- 2024
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4. Are violence, harmful alcohol/substance use and poor mental health associated with increased genital inflammation?: A longitudinal cohort study with HIV-negative female sex workers in Nairobi, Kenya
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Tara S. Beattie, James Pollock, Rhoda Kabuti, Tanya Abramsky, Mary Kung’u, Hellen Babu, The Maisha Fiti Study Champions, Sanja Huibner, Suji Udayakumar, Chrispo Nyamweya, Monica Okumu, Anne Mahero, Alicja Beksinska, Mamtuti Panneh, Pauline Ngurukiri, Erastus Irungu, Wendy Adhiambo, Peter Muthoga, Janet Seeley, Helen Weiss, Rupert Kaul, and Joshua Kimani
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Public aspects of medicine ,RA1-1270 - Published
- 2024
5. Childhood and adolescent factors shaping vulnerability to underage entry into sex work: a quantitative hierarchical analysis of female sex workers in Nairobi, Kenya
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Karen Devries, Helen Anne Weiss, Janet Seeley, Rupert Kaul, Nambusi Kyegombe, Joshua Kimani, Tara S Beattie, Pooja Shah, Alicja Beksinska, Graham F Medley, Rhoda Kabuti, Mary Kungu, Hellen Babu, Zaina Jama, Emily Nyariki, Pauline Ngurukiri, Demtilla Gwala, Daisy Oside, Ruth Kamene, Agnes Watata, Agnes Atieno, Faith Njau, and Mary Akinyi
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Medicine - Abstract
Objective To explore factors associated with early age at entry into sex work, among a cohort of female sex workers (FSWs) in Nairobi, Kenya.Background Younger age at sex work initiation increases the risk of HIV acquisition, condom non-use, violence victimisation and alcohol and/or substance use problems. This study aimed to understand factors in childhood and adolescence that shape the vulnerability to underage sex work initiation.Design Building on previous qualitative research with this cohort, analysis of behavioural–biological cross-sectional data using hierarchical logistic regression.Participants and measures FSWs aged 18–45 years were randomly selected from seven Sex Workers Outreach Programme clinics in Nairobi, and between June and December 2019, completed a baseline behavioural–biological survey. Measurement tools included WHO Adverse Childhood Experiences, Alcohol, Smoking and Substance Involvement Screening Test and questionnaires on sociodemographic information, sexual risk behaviours and gender-based violence. Descriptive statistics and logistic regression were conducted using hierarchical modelling.Results Of the 1003 FSWs who participated in the baseline survey (response rate 96%), 176 (17.5%) initiated sex work while underage (
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- 2023
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6. The biomechanical implications of neck position in cervical contusion animal models of SCI
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Numaira Obaid, Kazuhito Morioka, Eleni Sinopoulou, Yvette S. Nout-Lomas, Ernesto Salegio, Jacqueline C. Bresnahan, Michael S. Beattie, and Carolyn J. Sparrey
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spinal cord injury ,surgical positioning ,contusion models ,animal models ,contusion injury ,Neurology. Diseases of the nervous system ,RC346-429 - Abstract
Large animal contusion models of spinal cord injury are an essential precursor to developing and evaluating treatment options for human spinal cord injury. Reducing variability in these experiments has been a recent focus as it increases the sensitivity with which treatment effects can be detected while simultaneously decreasing the number of animals required in a study. Here, we conducted a detailed review to explore if head and neck positioning in a cervical contusion model of spinal cord injury could be a factor impacting the biomechanics of a spinal cord injury, and thus, the resulting outcomes. By reviewing existing literature, we found evidence that animal head/neck positioning affects the exposed level of the spinal cord, morphology of the spinal cord, tissue mechanics and as a result the biomechanics of a cervical spinal cord injury. We posited that neck position could be a hidden factor contributing to variability. Our results indicate that neck positioning is an important factor in studying biomechanics, and that reporting these values can improve inter-study consistency and comparability and that further work needs to be done to standardize positioning for cervical spinal cord contusion injury models.
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- 2023
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7. Excavating FAIR Data: the Case of the Multicenter Animal Spinal Cord Injury Study (MASCIS), Blood Pressure, and Neuro-Recovery.
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Carlos A. Almeida, Abel Torres-Espin, J. Russell Huie, Dongming Sun, Linda J. Noble-Haeusslein, Wise Young, Michael S. Beattie, Jacqueline C. Bresnahan, Jessica L. Nielson, and Adam R. Ferguson
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- 2022
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8. Empowering Data Sharing and Analytics through the Open Data Commons for Traumatic Brain Injury Research
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Austin Chou, Abel Torres-Esp?n, J. Russell Huie, Karen Krukowski, Sangmi Lee, Amber Nolan, Caroline Guglielmetti, Bridget E. Hawkins, Myriam M. Chaumeil, Geoffrey T. Manley, Michael S. Beattie, Jacqueline C. Bresnahan, Maryann E. Martone, Jeffrey S. Grethe, Susanna Rosi, and Adam R. Ferguson
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data sharing ,FAIR principles ,multi-variate analysis ,Open Data Commons ,principal component analysis ,traumatic brain Injury ,Medical emergencies. Critical care. Intensive care. First aid ,RC86-88.9 - Abstract
Traumatic brain injury (TBI) is a major public health problem. Despite considerable research deciphering injury pathophysiology, precision therapies remain elusive. Here, we present large-scale data sharing and machine intelligence approaches to leverage TBI complexity. The Open Data Commons for TBI (ODC-TBI) is a community-centered repository emphasizing Findable, Accessible, Interoperable, and Reusable data sharing and publication with persistent identifiers. Importantly, the ODC-TBI implements data sharing of individual subject data, enabling pooling for high-sample-size, feature-rich data sets for machine learning analytics. We demonstrate pooled ODC-TBI data analyses, starting with descriptive analytics of subject-level data from 11 previously published articles (N?=?1250 subjects) representing six distinct pre-clinical TBI models. Second, we perform unsupervised machine learning on multi-cohort data to identify persistent inflammatory patterns across different studies, improving experimental sensitivity for pro- versus anti-inflammation effects. As funders and journals increasingly mandate open data practices, ODC-TBI will create new scientific opportunities for researchers and facilitate multi-data-set, multi-dimensional analytics toward effective translation.
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- 2022
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9. Syndemic of factors that shape the early lives of women who enter into sex work: a qualitative methods study from Nairobi, Kenya
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Karen Devries, Helen Anne Weiss, Janet Seeley, Mitzy Gafos, Rupert Kaul, Nambusi Kyegombe, Joshua Kimani, Tara S Beattie, Pooja Shah, Graham F Medley, Rhoda Kabuti, Hellen Babu, Mary Kung'u, Jennifer Liku, Zaina Jama, and Emily Nyariki
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Medicine - Abstract
Objective To explore the structural and social co-factors that shape the early lives of women who enter sex work in Nairobi, Kenya.Design Thematic analysis of qualitative data collected as part of the Maisha Fiti study among female sex workers (FSWs) in Nairobi.Participants and measures FSWs aged 18–45 years were randomly selected from seven Sex Workers Outreach Programme clinics in Nairobi and participated in baseline behavioural–biological surveys. Participants in this qualitative study were randomly selected from the Maisha Fiti study cohort and were interviewed between October 2019 and July 2020. Women described their lives from childhood, covering topics including sex work, violence and financial management.Results 48 out of 1003 Maisha Fiti participants participated in the in-depth qualitative interviews. FSWs described how physical and sexual violence, poverty and incomplete education in their childhood and adolescence intertwined with early pregnancy, marriage, intimate partner violence and relationship breakdown in their adolescence and early adulthood. The data analysis found clear syndemic relationships between these risk factors, particularly childhood violence, poverty and incomplete education and highlighted pathways leading to financial desperation and caring for dependents, and subsequent entry into sex work. Women perceived sex work as risky and most would prefer alternative work if possible, but it provided them with some financial independence and agency.Conclusions This is the first study in Kenya to qualitatively explore the early lives of sex workers from a syndemic perspective. This method identified the pivotal points of (1) leaving school early due to poverty or pregnancy, (2) breakdown of early intimate relationships and (3) women caring for dependents on their own. Complex, multi-component structural interventions before these points could help increase school retention, reduce teenage pregnancy, tackle violence, support young mothers and reduce entry into sex work and the risk that it entails by expanding livelihood options.
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- 2023
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10. Prevalence and correlates of common mental health problems and recent suicidal thoughts and behaviours among female sex workers in Nairobi, Kenya
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Alicja Beksinska, Zaina Jama, Rhoda Kabuti, Mary Kungu, Hellen Babu, Emily Nyariki, Pooja Shah, Maisha Fiti Study Champions, Chrispo Nyabuto, Monica Okumu, Anne Mahero, Pauline Ngurukiri, Erastus Irungu, Wendy Adhiambo, Peter Muthoga, Rupert Kaul, Janet Seeley, Tara S. Beattie, Helen A. Weiss, and Joshua Kimani
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Mental health ,Female sex workers ,Depression ,Anxiety ,Post-traumatic stress disorder ,Suicide ,Psychiatry ,RC435-571 - Abstract
Abstract Background Adverse childhood experiences (ACEs), poverty, violence and harmful alcohol/substance use are associated with poor mental health outcomes, but few studies have examined these risks among Female Sex Workers (FSWs). We examine the prevalence and correlates of common mental health problems including suicidal thoughts and behaviours among FSWs in Kenya. Methods Maisha Fiti is a longitudinal study among FSWs randomly selected from Sex Worker Outreach Programme (SWOP) clinics across Nairobi. Baseline behavioural-biological survey (n = 1003) data were collected June–December 2019. Mental health problems were assessed using the Patient Health Questionnaire (PHQ-9) for depression, the Generalised Anxiety Disorder tool (GAD-7) for anxiety, the Harvard Trauma Questionnaire (HTQ-17) for Post-Traumatic Stress Disorder (PTSD) and a two-item tool to measure recent suicidal thoughts/behaviours. Other measurement tools included the WHO Adverse Childhood Experiences (ACE) score, WHO Violence Against Women questionnaire, and the Alcohol, Smoking and Substance Involvement Screening Test (ASSIST). Descriptive statistics and multivariable logistic regression were conducted using a hierarchical modelling approach. Results Of 1039 eligible FSWs, 1003 FSWs participated in the study (response rate: 96%) with mean age 33.7 years. The prevalence of moderate/severe depression was 23.2%, moderate/severe anxiety 11.0%, PTSD 14.0% and recent suicidal thoughts/behaviours 10.2% (2.6% suicide attempt, 10.0% suicidal thoughts). Depression, anxiety, PTSD and recent suicidal thoughts/behaviours were all independently associated with higher ACE scores, recent hunger (missed a meal in last week due to financial difficulties), recent sexual/physical violence and increased harmful alcohol/substance. PTSD was additionally associated with increased chlamydia prevalence and recent suicidal thoughts/behaviours with low education and low socio-economic status. Mental health problems were less prevalent among women reporting social support. Conclusions The high burden of mental health problems indicates a need for accessible services tailored for FSWs alongside structural interventions addressing poverty, harmful alcohol/substance use and violence. Given the high rates of ACEs, early childhood and family interventions should be considered to prevent poor mental health outcomes.
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- 2021
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11. Removing the societal and legal impediments to the HIV response: An evidence-based framework for 2025 and beyond.
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Anne L Stangl, Triantafyllos Pliakas, Jose Antonio Izazola-Licea, George Ayala, Tara S Beattie, Laura Ferguson, Luisa Orza, Sanyukta Mathur, Julie Pulerwitz, Alexandrina Iovita, and Victoria Bendaud
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Medicine ,Science - Abstract
Societal and legal impediments inhibit quality HIV prevention, care, treatment and support services and need to be removed. The political declaration adopted by UN member countries at the high-level meeting on HIV and AIDS in June 2021, included new societal enabler global targets for achievement by 2025 that will address this gap. Our paper describes how and why UNAIDS arrived at the societal enabler targets adopted. We conducted a scoping review and led a participatory process between January 2019 and June 2020 to develop an evidence-based framework for action, propose global societal enabler targets, and identify indicators for monitoring progress. A re-envisioned framework called the '3 S's of the HIV response: Society, Systems and Services' was defined. In the framework, societal enablers enhance the effectiveness of HIV programmes by removing impediments to service availability, access and uptake at the societal level, while service and system enablers improve efficiencies in and expand the reach of HIV services and systems. Investments in societal enabling approaches that remove legal barriers, shift harmful social and gender norms, reduce inequalities and improve institutional and community structures are needed to progressively realize four overarching societal enablers, the first three of which fall within the purview of the HIV sector: (i) societies with supportive legal environments and access to justice, (ii) gender equal societies, (iii) societies free from stigma and discrimination, and (iv) co-action across development sectors to reduce exclusion and poverty. Three top-line and 15 detailed targets were recommended for monitoring progress towards their achievement. The clear articulation of societal enablers in the re-envisioned framework should have a substantial impact on improving the effectiveness of core HIV programmes if implemented. Together with the new global targets, the framework will also galvanize advocacy to scale up societal enabling approaches with proven impact on HIV outcomes.
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- 2022
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12. Hypotension requiring vasopressor treatment and increased cardiac complications in elderly spinal cord injury patients: a prospective TRACK-SCI registry study
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Nitin Agarwal, Jacob Blitstein, Austin Lui, Abel Torres-Espin, Chalisar Vasnarungruengkul, John Burke, Praveen V. Mummaneni, Sanjay S. Dhall, Philip R. Weinstein, Xuan Duong-Fernandez, Austin Chou, Jonathan Pan, Vineeta Singh, Adam R. Ferguson, Debra D. Hemmerle, Nikos Kyritsis, Jason F. Talbott, William D. Whetstone, Jacqueline C. Bresnahan, Michael S. Beattie, Geoffrey T. Manley, and Anthony DiGiorgio
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General Medicine - Abstract
OBJECTIVE Increasing life expectancy has led to an older population. In this study, the authors analyzed complications and outcomes in elderly patients following spinal cord injury (SCI) using the established multi-institutional prospective study Transforming Research and Clinical Knowledge in SCI (TRACK-SCI) database collected in the Department of Neurosurgical Surgery at the University of California, San Francisco. METHODS TRACK-SCI was queried for elderly individuals (≥ 65 years of age) with traumatic SCI from 2015 to 2019. Primary outcomes of interest included total hospital length of stay, perioperative complications, postoperative complications, and in-hospital mortality. Secondary outcomes included disposition location, and neurological improvement based on the American Spinal Injury Association Impairment Scale (AIS) grade at discharge. Descriptive analysis, Fisher’s exact test, univariate analysis, and multivariable regression analysis were performed. RESULTS The study cohort consisted of 40 elderly patients. The in-hospital mortality rate was 10%. Every patient in this cohort experienced at least 1 complication, with a mean of 6.6 separate complications (median 6, mode 4). The most common complication categories were cardiovascular, with a mean of 1.6 complications (median 1, mode 1), and pulmonary, with a mean of 1.3 (median 1, mode 0) complications, with 35 patients (87.5%) having at least 1 cardiovascular complication and 25 (62.5%) having at least 1 pulmonary complication. Overall, 32 patients (80%) required vasopressor treatment for mean arterial pressure (MAP) maintenance goals. The use of norepinephrine correlated with increased cardiovascular complications. Only 3 patients (7.5%) of the total cohort had an improved AIS grade compared with their acute level at admission. CONCLUSIONS Given the increased frequency of cardiovascular complications associated with vasopressor use in elderly SCI patients, caution is warranted when targeting MAP goals in these patients. A downward adjustment of blood pressure maintenance goals and prophylactic cardiology consultation to select the most appropriate vasopressor agent may be advisable for SCI patients ≥ 65 years of age.
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- 2023
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13. Prevalence and correlates of psychological distress among 13–14 year old adolescent girls in North Karnataka, South India: a cross-sectional study
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Tara S. Beattie, Ravi Prakash, April Mazzuca, Leslie Kelly, Prakash Javalkar, T. Raghavendra, Satyanarayana Ramanaik, Martine Collumbien, Stephen Moses, Lori Heise, Shajy Isac, and Charlotte Watts
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Adolescent girls ,School drop out ,Child marriage ,Sexual abuse ,Psychological distress ,Suicide ideation ,Public aspects of medicine ,RA1-1270 - Abstract
Abstract Background Mental health disorders among adolescents have emerged as a major public health issue in many low and middle-income countries, including India. There is a paucity of research on the determinants of psychological distress, particularly among the poorest girls in the poorest communities. The purpose of this study was to assess the prevalence and correlates of different indicators of psychological distress among 13–14 year old low caste girls in rural, south India. Methods Cross-sectional survey of 1191 low caste girls in two districts in north Karnataka, conducted as part of a cluster randomised-control trial. Bivariate and multivariate logistic regression analysis assessed correlates of different indicators of psychological distress. Results More than one third of girls (35.1%) reported having no hope for the future. 6.9% reported feeling down, depressed or hopeless in the past 2 weeks. 2.1% reported thinking they would be better off dead or of hurting themselves in some way in the past 2 weeks. 1.6% reported sexual abuse, 8.0% rrecent eve teasing and 6.3% having no parental emotional support. Suicidal ideation was independently associated with sexual abuse (AOR 11.9 (3.0–47.0)) and a lack of parental emotional support (AOR 0.2 (0.1–0.5)). Feeling down, depressed or hopeless was independently associated with recent eve-teasing (AOR 2.9 (1.6–5.4)), a harassing or abusive school environment (AOR 3.9 (1.8–8.2)), being frequently absent (AOR 2.8 (1.5–5.5)) or having dropped out of school (AOR 2.1 (1.0–4.3)), and living in Vijayapura district (AOR 2.5 (1.6–4.1)). Having no hope for the future was independently associated with a range of factors, including recent “eve-teasing” (AOR 1.5 (1.0–2.4)), being engaged (AOR 2.9 (0.9–9.7)), not participating in groups (AOR 0.5 (0.4–0.6)) and a lack of emotional support (AOR 0.6 (0.4–0.7)). Conclusions Rather than being a time of optimism, a third of low caste girls in rural north, Karnataka have limited hope for the future, with some contemplating suicide. As well as having important development benefits, interventions that address the upstream structural and gender-norms based determinants of poor mental health, and provide adolescent services for girls who require treatment and support, should have important benefits for girls’ psychological wellbeing. Trial registration Prospectively registered at ClinicalTrials.GovNCT01996241. November 27, 2013
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- 2019
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14. Assessing the effect of the Samata intervention on factors hypothesised to be on the pathway to child marriage and school drop-out: results from a cluster-randomised trial in rural north Karnataka, India
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Tara S Beattie, Ravi Prakash, Prakash Javalkar, Martine Collumbien, Satyanarayana Ramanaik, Raghavendra Thalinja, Srikanta Murthy, Calum Davey, Stephen Moses, Lori Heise, Charlotte Watts, Shajy Isac, Mitzy Gafos, and Parinita Bhattacharjee
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Public aspects of medicine ,RA1-1270 - Abstract
# Background We implemented a comprehensive intervention (Samata) to address school drop-out and child marriage among rural, marginalised adolescent girls in north Karnataka, south India. Here, we investigate (i) the impact of the intervention on factors hypothesised at baseline to be on the pathway to preventing school drop-out and child marriage, and (ii) associations between these factors and secondary school completion and child marriage. # Methods Data was collected for a cluster-RCT evaluation. Factors hypothesised to be on the pathway to improving secondary school retention and delaying age at marriage included: (i) uptake of skills and training by adolescent girls; (ii) uptake of government school scholarships by families of adolescent girls; (iii) gender equitable attitudes among girls; (iv) reduced harassment by boys; and (v) an enabling school environment. Analyses used individual-level cluster-RCT survey data, were intention-to-treat and used mixed-effects logisitic regression models. # Results 92.6% (2257/2457) of girls participated at baseline (13-14 years) and 72.8% (1788/2457) participated at end-line (15-16 years). At end-line, uptake of skills and training, gender equitable attitudes around marriage, and recent harassment by boys were significantly higher among girls in the intervention arm but there was no difference in uptake of government school scholarships, gender equitable attitudes around education or eve-teasing, or an enabling school environment by trial arm. Out-of-school/married girls were significantly less likely to have accessed skills or training, to have attended empowerment groups or to have made new friends (past year). They had lower levels of self-efficacy and were twice as likely to report having no hope for the future compared with their in-school/unmarried counterparts. # Conclusions Samata was implemented in a context of substantial secular change across India; impacting on some of the factors hypothesised to be on the pathway was not sufficient to improve secondary school retention or delay marriage beyond what was already occurring. School dropout and child marriage were associated with diminished opportunities and well-being among girls. Targeted interventions are still needed; learnings from our study can be used to inform future interventions which similarly aim to impact on child marriage and secondary school retention within programmatic timeframes.
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- 2020
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15. Appendicular Fracture and Polytrauma Correlate with Outcome of Spinal Cord Injury: A Transforming Research and Clinical Knowledge in Spinal Cord Injury Study
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Theodore A, Miclau, Abel, Torres-Espin, Saam, Morshed, Kazuhito, Morioka, J Russell, Huie, Ashraf N, El Naga, Austin, Chou, Lisa, Pascual, Xuan, Duong-Fernandez, Yu-Hung, Kuo, Philip, Weinstein, Sanjay S, Dhall, Jacqueline C, Bresnahan, Michael S, Beattie, Anthony, Digiorgio, Adam R, Ferguson, and William D, Whetstone
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Fractures, Bone ,Multiple Trauma ,Humans ,Spinal Fractures ,Prospective Studies ,Neurology (clinical) ,Spinal Cord Injuries ,Retrospective Studies - Abstract
Spinal cord injuries (SCIs) frequently occur in combination with other major organ injuries, such as traumatic brain injury (TBI) and injuries to the chest, abdomen, and musculoskeletal system (e.g., extremity, pelvic, and spine fractures). However, the effects of appendicular fractures on SCI recovery are poorly understood. We investigated whether the presence of SCI-concurrent appendicular fractures is predictive of a less robust SCI recovery. Patients enrolled in the Transforming Research and Clinical Knowledge in SCI (TRACK-SCI) prospective cohort study were identified and included in this secondary analysis study. Inclusion criteria resulted in 147 patients, consisting of 120 with isolated SCIs and 27 with concomitant appendicular fracture. The primary outcome was American Spinal Injury Association (ASIA) Impairment Scale (AIS) neurological grades at hospital discharge. Secondary outcomes included hospital length of stay, intensive care unit (ICU) length of stay, and AIS grade improvement during hospitalization. Multivariable binomial logistical regression analyses assessed whether SCI-concomitant appendicular fractures associate with SCI function and secondary outcomes. These analyses were adjusted for age, gender, injury severity, and non-fracture polytrauma. Appendicular fractures were associated with more severe AIS grades at hospital discharge, though covariate adjustments diminished statistical significance of this effect. Notably, non-fracture injuries to the chest and abdomen were influential covariates. Secondary analyses suggested that appendicular fractures also increased hospital length of stay. Our study indicated that SCI-associated polytrauma is important for predicting SCI functional outcomes. Further statistical evaluation is required to disentangle the effects of appendicular fractures, non-fracture solid organ injury, and SCI physiology to improve health outcomes among SCI patients.
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- 2022
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16. Effectiveness of a multilevel intervention to reduce violence and increase condom use in intimate partnerships among female sex workers: cluster randomised controlled trial in Karnataka, India
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Charlotte Watts, Mitzy Gafos, Satyanarayana Ramanaik, Ravi Prakash, Shajy Isac, Parinita Bhattacharjee, Lucy Platt, Prakash Javalkar, Tara S Beattie, Martine Collumbien, Calum Davey, Raghavendra Thalinja, and Kavitha DL
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Medicine (General) ,R5-920 ,Infectious and parasitic diseases ,RC109-216 - Abstract
Introduction Samvedana Plus is a multilevel intervention working with sex workers, their intimate partners (IPs) and communities to reduce intimate partner violence (IPV) and to increase condom use within intimate relationships of sex workers in Northern Karnataka, India.Methods A cluster randomised controlled trial in 47 villages. Female sex workers with IPs in the last 6 months were eligible for baseline (2014), midline (2016) and endline (2017) surveys. 24 villages were randomised to Samvedana Plus and 23 to a wait-list control. Primary outcomes among sex workers included experience of physical and/or sexual IPV or severe physical/sexual IPV in the last 6 months and consistent condom use with their IP in past 30 days. Analyses adjusted for clustering and baseline cluster-level means of outcomes.Result Baseline (n=620) imbalance was observed with respect to age (33.9 vs 35.2) and IPV (31.4% vs 45.0%). No differences in physical/sexual IPV (8.1% vs 9.0%), severe physical/sexual IPV (6.9% vs 8.7%) or consistent condom use with IPs (62.5% vs 57.3%) were observed by trial arm at end line (n=547). Samvedana Plus was associated with decreased acceptance of IPV (adjusted OR (AOR)=0.62, 95% CI 0.40 to 0.94, p=0.025), increased awareness of self-protection strategies (AOR=1.73, 95% CI=1.04–2.89, p=0.035) and solidarity of sex workers around issues of IPV (AOR=1.69, 95% CI=1.02–2.82, p=0.042). We observed an increase in IPV between baseline (25.9%) and midline (63.5%) among women in Samvedana Plus villages but lower in comparison villages (41.8%–44.3%) and a sharp decrease at end line in both arms (~8%).Conclusion We found no evidence that Samvedana Plus reduced IPV or increased condom use, but it may impact acceptance of IPV, increase knowledge of self-protection strategies and increase sex worker solidarity. Inconsistencies in reported IPV undermined the ability of the trial to assess effectiveness.Trial registration number NCT02807259.
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- 2019
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17. Secular changes in child marriage and secondary school completion among rural adolescent girls in India
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Tara S Beattie, Prakash Javalkar, Mitzy Gafos, Lori Heise, Stephen Moses, and Ravi Prakash
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Public aspects of medicine ,RA1-1270 - Abstract
# Background Child marriage (\
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- 2019
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18. Reducing violence and increasing condom use in the intimate partnerships of female sex workers: study protocol for Samvedana Plus, a cluster randomised controlled trial in Karnataka state, south India
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Tara S. Beattie, Shajy Isac, Parinita Bhattacharjee, Prakash Javalkar, Calum Davey, T. Raghavendra, Sapna Nair, Satyanarayana Ramanaik, D. L. Kavitha, James F. Blanchard, Charlotte Watts, Martine Collumbien, Stephen Moses, and Lori Heise
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Female sex work ,India ,Violence ,HIV ,STI ,Intimate partner violence ,Public aspects of medicine ,RA1-1270 - Abstract
Abstract Background Female sex workers (FSWs) are at increased risk of HIV and STIs compared to women in the general population, and frequently experience violence in their working and domestic lives from a variety of perpetrators, which can enhance this risk. While progress has been made in addressing violence by police and clients, little work has been done to understand and prevent violence by intimate partners (IPs) among FSW populations. Methods Samvedana Plus is a multi-level intervention programme that works with FSWs, their IPs, the sex worker community, and the general population, and aims to reduce violence and increase consistent condom use within these ‘intimate’ relationships. The programme involves shifting norms around the acceptability of beating as a form of discipline, challenging gender roles that give men authority over women, and working with men and women to encourage new relationship models based on gender equity and respect. The programme will aim to cover 800 FSWs and their IPs living in 47 villages in Bagalkot district, northern Karnataka. The study is designed to assess two primary outcomes: the proportion of FSWs who report: (i) physical or sexual partner violence; and (ii) consistent condom use in their intimate relationship, within the past 6 months. The evaluation will employ a cluster-randomised controlled trial design, with 50 % of the village clusters (n = 24) randomly selected to receive the intervention for the first 24 months and the remaining 50 % (n = 23) receiving the intervention thereafter. Statisticians will be blinded to treatment arm allocation. The evaluation will use an adjusted, cluster-level intention to treat analysis, comparing outcomes in intervention and control villages at midline (12 months) and endline (24 months). The evaluation design will involve quantitative and qualitative assessments with (i) all FSWs who report an IP (ii) IPs; and process/ implementation monitoring. Baseline data collection was completed in April 2015, and endline data collection is anticipated in May 2017. Conclusions This is an innovative intervention programme that aims to address violence by IPs as part of HIV prevention programming with FSWs. Reducing violence is expected to reduce vulnerability to HIV acquisition, and help women to work and live without fear of violence. Trial registration Clinical Trials NCT02807259 Jun 24 2016 (retrospectively registered).
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- 2016
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19. Recovery Mechanisms in Aged Kesterite Solar Cells
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Stephen Campbell, Martial Duchamp, Bethan Ford, Michael Jones, Linh Lan Nguyen, Matthew C. Naylor, Xinya Xu, Pietro Maiello, Guillaume Zoppi, Vincent Barrioz, Neil S. Beattie, Yongtao Qu, School of Materials Science and Engineering, and Laboratory for In Situ and Operando Electron Nanoscopy
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Photovoltaics ,Materials [Engineering] ,Kesterite ,F200 ,Materials Chemistry ,Electrochemistry ,Energy Engineering and Power Technology ,Chemical Engineering (miscellaneous) ,H800 ,Electrical and Electronic Engineering - Abstract
For successful long-term deployment and operation of kesterites Cu2ZnSn(S x Se1-x )4 (CZTSSe) as light-absorber materials for photovoltaics, device stability and recovery in kesterite solar cells are investigated. A low-temperature heat treatment is applied to overcome the poor charge extraction that developed in the natural aging process. It is suggested that defect states at aged CZTSSe/CdS heterojunctions were reduced, while apparent doping density in the CZTSSe absorber increased due to Cd/Zn interdiffusion at the heterojunction during the annealing process. In situ annealing experiments in a transmission electron microscope were used to investigate the elemental diffusion at the CZTSSe/CdS heterojunction. This study reveals the critical role of heat treatment to enhance the absorber/Mo back contact, improve the quality of the absorber/buffer heterojunction, and recover the device performance in aged kesterite thin-film solar cells. Ministry of Education (MOE) Published version This work was supported by the Engineering and Physical Sciences Research Council (EPSRC) (EP/T005491/1 and EP/S023836/1). The authors also appreciate the support from the North East Centre for Energy Materials (NECEM) (EP/ R021503/1) and the British Council Newton Fund Institutional Links Grant (CRP01286). This research was funded by the Ministry of Education, Singapore Tier 2 MOE2019-T2-2- 066.
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- 2022
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20. Supplementary Tables 1-4 from Common Variants at the 19p13.1 and ZNF365 Loci Are Associated with ER Subtypes of Breast Cancer and Ovarian Cancer Risk in BRCA1 and BRCA2 Mutation Carriers
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Jacques Simard, Kenneth Offit, Georgia Chenevix-Trench, Douglas F. Easton, Phuong L. Mai, Mark H. Greene, Paolo Radice, Liliana Varesco, Giuseppe Giannini, Alessandra Viel, Loris Bernard, Monica Barile, Daniela Zaffaroni, Bernard Peissel, Siranoush Manoukian, Paolo Peterlongo, V. Shane Pankratz, Zachary Fredericksen, Noralane M. Lindor, Yuan Chun Ding, Susan L. Neuhausen, Amanda B. Spurdle, Marc D. Tischkowitz, Heli Nevanlinna, Taru A. Muranen, Miguel de la Hoya, Trinidad Caldes, Wolfram Heinritz, Britta Fiebig, Karin Kast, Christian Sutter, Andrea Gehrig, Helmut Deissler, Raymonda Varon-Mateeva, Dorothea Gadzicki, Sabine Preisler-Adams, Dieter Niederacher, Simone Heidemann, Norbert Arnold, Nina Ditsch, Alfons Meindl, Christoph Engel, Barbara Wappenschmidt, Rita K. Schmutzler, Ava Kwong, Orland Diez, Cecelia M. Dorfling, Elizabeth J. van Rensburg, Mary S. Beattie, Patricia A. Ganz, Soo Hwang Teo, Edith Olah, Christine S. Walsh, Beth Y. Karlan, Kunle O. Odunsi, Paul P.D. Pharoah, Simon A. Gayther, Joan Brunet, Lidia Feliubadalo, Ignacio Blanco, Conxi Lazaro, Ramunas Janavicius, Claudine Isaacs, Evgeny N. Imyanitov, Simona Agata, Marco Montagna, Amanda Ewart-Toland, Katie Wakeley, John Boggess, Wendy S. Rubinstein, Jack Basil, Kelly Phillips, Marion Piedmonte, Mark E. Robson, Kara Sarrel, Sohela Shah, Joseph Vijai, Aðalgeir Arason, Finn C. Nielsen, Thomas V.O. Hansen, Anneliese Fink-Retter, Muy-Kheng M. Tea, Christine Rappaport, Christian F. Singer, David E. Goldgar, John L. Hopper, Melissa C. Southey, Alexander Miron, Esther M. John, Wendy K. Chung, MaryBeth Terry, Mary B. Daly, Saundra S. Buys, Carrie L. Snyder, Henry T. Lynch, Linda Akloul, Capucine Delnatte, Isabelle Coupier, Pascal Pujol, Olivier Caron, Brigitte Bressac-de Paillerets, Nadia Boutry-Kryza, Mélanie Léoné, Sylvie Mazoyer, François Cornelis, Laurent Castera, Marion Fassy-Colcombet, Dominique Stoppa-Lyonnet, Andrew K. Godwin, Betsy Bove, Lucy E. Side, M. John Kennedy, Mary E. Porteous, Lisa Walker, Patrick J. Morrison, Shirley V. Hodgson, Fiona Douglas, Carole Brewer, Joan Paterson, Jackie Cook, Trevor Cole, Diana M. Eccles, Rosemarie Davidson, Julian Adlard, Rosalind A. Eeles, Chris Jacobs, D. Gareth Evans, Elena Fineberg, Radka Platte, Steve D. Ellis, Debra Frost, Susan Peock, Margreet G.E.M. Ausems, Rogier A. Oldenburg, Maartje J. Hooning, Marleen Kets, Marinus J. Blok, Juul Wijnen, Hanne E.J. Meijers-Heijboer, Flora E. van Leeuwen, Theo A. van Os, Frans B.L. Hogervorst, Ute Hamann, Javier Benitez, María Isabel Tejada, Mercedes Durán, Ana Osorio, Bohdan Górski, Cezary Cybulski, Jacek Gronwald, Tomasz Byrski, Tomasz Huzarski, Elżbieta Złowocka, Katarzyna Durda, Katarzyna Jaworska, Jan Lubinski, Ania Jakubowska, Susan M. Domchek, Timothy R. Rebbeck, Katherine L. Nathanson, Per Karlsson, Hans Ehrencrona, Maria Soller, Niklas Loman, Gisela Barbany-Bustinza, Anna von Wachenfeldt, Maria A. Caligo, Torben A. Kruse, Anne-Bine Skytte, Uffe Birk Jensen, Anne-Marie Gerdes, Mads Thomassen, Anna Marie Mulligan, Hilmi Ozcelik, Irene L. Andrulis, Olga M. Sinilnikova, Sue Healey, Andrew Lee, Daniel Barrowdale, Lesley McGuffog, Tomas Kirchhoff, Xianshu Wang, Xiaoqing Chen, Jonathan Beesley, Penny Soucy, Karoline B. Kuchenbaecker, Susan J. Ramus, Antonis C. Antoniou, Mia M. Gaudet, and Fergus J. Couch
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PDF file - 90K
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- 2023
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21. Data from Common Variants at the 19p13.1 and ZNF365 Loci Are Associated with ER Subtypes of Breast Cancer and Ovarian Cancer Risk in BRCA1 and BRCA2 Mutation Carriers
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Jacques Simard, Kenneth Offit, Georgia Chenevix-Trench, Douglas F. Easton, Phuong L. Mai, Mark H. Greene, Paolo Radice, Liliana Varesco, Giuseppe Giannini, Alessandra Viel, Loris Bernard, Monica Barile, Daniela Zaffaroni, Bernard Peissel, Siranoush Manoukian, Paolo Peterlongo, V. Shane Pankratz, Zachary Fredericksen, Noralane M. Lindor, Yuan Chun Ding, Susan L. Neuhausen, Amanda B. Spurdle, Marc D. Tischkowitz, Heli Nevanlinna, Taru A. Muranen, Miguel de la Hoya, Trinidad Caldes, Wolfram Heinritz, Britta Fiebig, Karin Kast, Christian Sutter, Andrea Gehrig, Helmut Deissler, Raymonda Varon-Mateeva, Dorothea Gadzicki, Sabine Preisler-Adams, Dieter Niederacher, Simone Heidemann, Norbert Arnold, Nina Ditsch, Alfons Meindl, Christoph Engel, Barbara Wappenschmidt, Rita K. Schmutzler, Ava Kwong, Orland Diez, Cecelia M. Dorfling, Elizabeth J. van Rensburg, Mary S. Beattie, Patricia A. Ganz, Soo Hwang Teo, Edith Olah, Christine S. Walsh, Beth Y. Karlan, Kunle O. Odunsi, Paul P.D. Pharoah, Simon A. Gayther, Joan Brunet, Lidia Feliubadalo, Ignacio Blanco, Conxi Lazaro, Ramunas Janavicius, Claudine Isaacs, Evgeny N. Imyanitov, Simona Agata, Marco Montagna, Amanda Ewart-Toland, Katie Wakeley, John Boggess, Wendy S. Rubinstein, Jack Basil, Kelly Phillips, Marion Piedmonte, Mark E. Robson, Kara Sarrel, Sohela Shah, Joseph Vijai, Aðalgeir Arason, Finn C. Nielsen, Thomas V.O. Hansen, Anneliese Fink-Retter, Muy-Kheng M. Tea, Christine Rappaport, Christian F. Singer, David E. Goldgar, John L. Hopper, Melissa C. Southey, Alexander Miron, Esther M. John, Wendy K. Chung, MaryBeth Terry, Mary B. Daly, Saundra S. Buys, Carrie L. Snyder, Henry T. Lynch, Linda Akloul, Capucine Delnatte, Isabelle Coupier, Pascal Pujol, Olivier Caron, Brigitte Bressac-de Paillerets, Nadia Boutry-Kryza, Mélanie Léoné, Sylvie Mazoyer, François Cornelis, Laurent Castera, Marion Fassy-Colcombet, Dominique Stoppa-Lyonnet, Andrew K. Godwin, Betsy Bove, Lucy E. Side, M. John Kennedy, Mary E. Porteous, Lisa Walker, Patrick J. Morrison, Shirley V. Hodgson, Fiona Douglas, Carole Brewer, Joan Paterson, Jackie Cook, Trevor Cole, Diana M. Eccles, Rosemarie Davidson, Julian Adlard, Rosalind A. Eeles, Chris Jacobs, D. Gareth Evans, Elena Fineberg, Radka Platte, Steve D. Ellis, Debra Frost, Susan Peock, Margreet G.E.M. Ausems, Rogier A. Oldenburg, Maartje J. Hooning, Marleen Kets, Marinus J. Blok, Juul Wijnen, Hanne E.J. Meijers-Heijboer, Flora E. van Leeuwen, Theo A. van Os, Frans B.L. Hogervorst, Ute Hamann, Javier Benitez, María Isabel Tejada, Mercedes Durán, Ana Osorio, Bohdan Górski, Cezary Cybulski, Jacek Gronwald, Tomasz Byrski, Tomasz Huzarski, Elżbieta Złowocka, Katarzyna Durda, Katarzyna Jaworska, Jan Lubinski, Ania Jakubowska, Susan M. Domchek, Timothy R. Rebbeck, Katherine L. Nathanson, Per Karlsson, Hans Ehrencrona, Maria Soller, Niklas Loman, Gisela Barbany-Bustinza, Anna von Wachenfeldt, Maria A. Caligo, Torben A. Kruse, Anne-Bine Skytte, Uffe Birk Jensen, Anne-Marie Gerdes, Mads Thomassen, Anna Marie Mulligan, Hilmi Ozcelik, Irene L. Andrulis, Olga M. Sinilnikova, Sue Healey, Andrew Lee, Daniel Barrowdale, Lesley McGuffog, Tomas Kirchhoff, Xianshu Wang, Xiaoqing Chen, Jonathan Beesley, Penny Soucy, Karoline B. Kuchenbaecker, Susan J. Ramus, Antonis C. Antoniou, Mia M. Gaudet, and Fergus J. Couch
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Background: Genome-wide association studies (GWAS) identified variants at 19p13.1 and ZNF365 (10q21.2) as risk factors for breast cancer among BRCA1 and BRCA2 mutation carriers, respectively. We explored associations with ovarian cancer and with breast cancer by tumor histopathology for these variants in mutation carriers from the Consortium of Investigators of Modifiers of BRCA1/2 (CIMBA).Methods: Genotyping data for 12,599 BRCA1 and 7,132 BRCA2 mutation carriers from 40 studies were combined.Results: We confirmed associations between rs8170 at 19p13.1 and breast cancer risk for BRCA1 mutation carriers [HR, 1.17; 95% confidence interval (CI), 1.07–1.27; P = 7.42 × 10−4] and between rs16917302 at ZNF365 (HR, 0.84; 95% CI, 0.73–0.97; P = 0.017) but not rs311499 at 20q13.3 (HR, 1.11; 95% CI, 0.94–1.31; P = 0.22) and breast cancer risk for BRCA2 mutation carriers. Analyses based on tumor histopathology showed that 19p13 variants were predominantly associated with estrogen receptor (ER)-negative breast cancer for both BRCA1 and BRCA2 mutation carriers, whereas rs16917302 at ZNF365 was mainly associated with ER-positive breast cancer for both BRCA1 and BRCA2 mutation carriers. We also found for the first time that rs67397200 at 19p13.1 was associated with an increased risk of ovarian cancer for BRCA1 (HR, 1.16; 95% CI, 1.05–1.29; P = 3.8 × 10−4) and BRCA2 mutation carriers (HR, 1.30; 95% CI, 1.10–1.52; P = 1.8 × 10−3).Conclusions: 19p13.1 and ZNF365 are susceptibility loci for ovarian cancer and ER subtypes of breast cancer among BRCA1 and BRCA2 mutation carriers.Impact: These findings can lead to an improved understanding of tumor development and may prove useful for breast and ovarian cancer risk prediction for BRCA1 and BRCA2 mutation carriers. Cancer Epidemiol Biomarkers Prev; 21(4); 645–57. ©2012 AACR.
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- 2023
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22. A structural, optical and electrical comparison between physical vapour deposition and slot-die deposition of Al:ZnO (AZO)
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Ewan D. Matheson, Xinya Xu, Yongtao Qu, Guillaume Zoppi, Vincent Barrioz, and Neil S. Beattie
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Mechanics of Materials ,Mechanical Engineering ,General Materials Science ,Condensed Matter Physics - Abstract
Aluminium-doped zinc oxide (AZO) is a potential low-cost alternative to indium tin oxide (ITO) for application in optoelectronic devices as a transparent conducting thin film. Typically, AZO thin films are deposited using expensive, high vacuum equipment with high energy cost and materials wastage. In this study, slot-die coating was used as an inexpensive alternative to vacuum deposition to form AZO nanoparticle thin films under ambient laboratory conditions. The films were characterised structurally, optically and electrically and compared with a commercially obtained AZO film fabricated using physical vapour deposition (PVD). Structural characterisation of the nanoparticle film shows uniform coverage across the substrate with increased crystal quality following annealing in Ar up to 500 $$^{\circ }$$ ∘ C. The optical properties of the nanoparticle film exhibit a wider band gap than the PVD film, while the high density of grain boundary defects between the nanoparticles inhibits sheet conductivity. Graphical abstract
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- 2023
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23. Managing motherhood - the experiences of female sex workers in Nairobi, Kenya
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Emily Nyariki, Rhoda Wanjiru, Pooja Shah, Mary Kungu, Hellen Babu, Helen A. Weiss, Janet Seeley, Joshua Kimani, and Tara S. Beattie
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Health (social science) ,Public Health, Environmental and Occupational Health - Abstract
Women selling sex often face challenges in raising their children in the context of significant socio-economic difficulties and the social stigma inherent in sex work. This paper is based on a cross-sectional qualitative study that explored the dual roles of motherhood and sex work among female sex workers enrolled for ongoing HIV prevention and treatment services in the Sex Workers Outreach Programme (SWOP) clinics in Nairobi, Kenya. We examined women's experiences and coping in negotiating and managing the dual roles of motherhood and sex work. In-depth interviews were conducted with 39 women randomly selected from 1,000 women included in a baseline behavioural-biological survey conducted in October-November 2020 as part of the
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- 2022
24. Correlating Tissue Mechanics and Spinal Cord Injury: Patient-Specific Finite Element Models of Unilateral Cervical Contusion Spinal Cord Injury in Non-Human Primates
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Shervin Jannesar, Ernesto A. Salegio, Carolyn J. Sparrey, Jacqueline C. Bresnahan, and Michael S. Beattie
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Male ,Primates ,030506 rehabilitation ,Finite Element Analysis ,Strain (injury) ,White matter ,Lesion ,03 medical and health sciences ,0302 clinical medicine ,Animals ,Humans ,Medicine ,Computer Simulation ,Tissue mechanics ,Spinal cord injury ,Spinal Cord Injuries ,business.industry ,Biomechanics ,Brain ,Histology ,Original Articles ,Anatomy ,medicine.disease ,Spinal cord ,Macaca mulatta ,Biomechanical Phenomena ,medicine.anatomical_structure ,Cervical Vertebrae ,Stress, Mechanical ,Neurology (clinical) ,medicine.symptom ,0305 other medical science ,business ,030217 neurology & neurosurgery - Abstract
Non-human primate (NHP) models are the closest approximation of human spinal cord injury (SCI) available for pre-clinical trials. The NHP models, however, include broader morphological variability that can confound experimental outcomes. We developed subject-specific finite element (FE) models to quantify the relationship between impact mechanics and SCI, including the correlations between FE outcomes and tissue damage. Subject-specific models of cervical unilateral contusion SCI were generated from pre-injury MRIs of six NHPs. Stress and strain outcomes were compared with lesion histology using logit analysis. A parallel generic model was constructed to compare the outcomes of subject-specific and generic models. The FE outcomes were correlated more strongly with gray matter damage (0.29 < R(2) < 0.76) than white matter (0.18 < R(2) < 0.58). Maximum/minimum principal strain, Von-Mises and Tresca stresses showed the strongest correlations (0.31 < R(2) < 0.76) with tissue damage in the gray matter while minimum principal strain, Von-Mises stress, and Tresca stress best predicted white matter damage (0.23 < R(2) < 0.58). Tissue damage thresholds varied for each subject. The generic FE model captured the impact biomechanics in two of the four models; however, the correlations between FE outcomes and tissue damage were weaker than the subject-specific models (gray matter [0.25 < R(2) < 0.69] and white matter [R(2) < 0.06] except for one subject [0.26 < R(2) < 0.48]). The FE mechanical outputs correlated with tissue damage in spinal cord white and gray matters, and the subject-specific models accurately mimicked the biomechanics of NHP cervical contusion impacts.
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- 2021
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25. Ex-situ Ge-doping of CZTS Nanocrystals and CZTSSe Solar Absorber Films
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Matthew C. Naylor, Devendra Tiwari, Alice Sheppard, Jude Laverock, Stephen Campbell, Bethan Ford, Xinya Xu, Michael D. K. Jones, Yongtao Qu, Pietro Maiello, Vincent Barrioz, Neil S. Beattie, Neil A. Fox, David J. Fermin, and Guillaume Zoppi
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F100 ,F200 ,Physical and Theoretical Chemistry - Abstract
Cu 2ZnSn(S,Se) 4 (CZTSSe) is a promising material for thin-film photovoltaics, however, the open-circuit voltage ( V OC) deficit of CZTSSe prevents the device performance from exceeding 13% conversion efficiency. CZTSSe is a heavily compensated material that is rich in point defects and prone to the formation of secondary phases. The landscape of these defects is complex and some mitigation is possible by employing non-stoichiometric conditions. Another route used to reduce the effects of undesirable defects is the doping and alloying of the material to suppress certain defects and improve crystallization, such as with germanium. The majority of works deposit Ge adjacent to a stacked metallic precursor deposited by physical vapour deposition before annealing in a selenium rich atmosphere. Here, we use an established hot-injection process to synthesise Cu 2ZnSnS 4 nanocrystals of a pre-determined composition, which are subsequently doped with Ge during selenisation to aid recrystallisation and reduce the effects of Sn species. Through Ge incorporation, we demonstrate structural changes with a negligible change in the energy bandgap but substantial increases in the crystallinity and grain morphology, which are associated with a Ge-Se growth mechanism, and gains in both the V OC and conversion efficiency. We use surface energy-filtered photoelectron emission microscopy (EF-PEEM) to map the surface work function terrains and show an improved electronic landscape, which we attribute to a reduction in the segregation of low local effective work function (LEWF) Sn(II) chalcogenide phases.
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- 2022
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26. Exploring the Role of Temperature and Hole Transport Layer on the Ribbon Orientation and Efficiency of Sb2Se3 cells Deposited via Thermal Evaporation
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Ryan Voyce, Stephen Campbell, Oliver S. Hutter, Guillaume Zoppi, Neil S. Beattie, Elizabeth A. Gibson, and Vincent Barrioz
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- 2022
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27. Slot-die Fabrication of Solution-processed Kesterite Solar Cells for Product Integrated Photovoltaics
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Xinya Xu, Matthew C Naylor, Michael Jones, Bethan Ford, Stephen Campbell, Yongtao Qu, Vincent Barrioz, Guillaume Zoppi, and Neil S Beattie
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- 2022
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28. Longitudinal experiences and risk factors for common mental health problems and suicidal behaviours among female sex workers in Nairobi, Kenya
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Alicja Beksinska, Pooja Shah, Mary Kungu, Rhoda Kabuti, Hellen Babu, Zaina Jama, Mamtuti Panneh, Emily Nyariki, Chrispo Nyabuto, Monica Okumu, Pauline Ngurukiri, Erastus Irungu, Rupert Kaul, Janet Seeley, Mitzy Gafos, Tara S. Beattie, Helen A. Weiss, and Joshua Kimani
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General Earth and Planetary Sciences ,General Environmental Science - Abstract
Background Female sex workers (FSWs) are at high risk of mental health problems and suicide risk. Few longitudinal studies have examined risk factors for poor mental health among FSWs. Methods Maisha Fiti is a longitudinal study among FSWs randomly selected from Sex Worker Outreach Programme clinics across Nairobi. Behavioural-biological survey data were collected at baseline (n = 1003, June–December 2019), midline (n = 366) (Jan–March 2020) and endline (n = 877) (June 2020–Jan 2021). Women reporting mental health problems were offered counselling services. Multivariable mixed logistic regression models were used to examine factors associated with mental health problems and suicidal behaviours. Results There was a decline in the proportion of women reporting any mental health problem (depression and/or anxiety and/or PTSD) (baseline: 29.9%, midline: 13.3%, endline: 11.8%). There was strong evidence that any mental health problem was associated with recent hunger (aOR 1.99; 95% CI 1.37–2.88) and recent violence from non-intimate partners (2.23; 95% CI 1.55–3.19). Recent suicidal behaviour prevalence was similar across survey rounds (baseline: 10.2%; midline: 10.2%; endline: 10.4%), and was associated with recent violence from non-intimate partners (aOR 1.96; 95% CI 1.31–2.95), recent hunger (aOR 1.69; 95% CI 1.15–2.47) and having an additional employment to sex work (aOR 1.50; 95% CI 1.00–2.23). Conclusions Our study found a decline in mental health problems but high levels of persistent suicidal behaviours among FSWs. Syndemic risk factors including food insecurity and violence were longitudinally associated with mental health problems and recent suicidal behaviours. There is a need for accessible mental health services for FSWs, alongside structural interventions addressing poverty and violence.
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- 2022
29. Beaten but not down! Exploring resilience among female sex workers (FSWs) in Nairobi, Kenya
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Rhoda, Wanjiru, Emily, Nyariki, Hellen, Babu, Ibrahim, Lwingi, Jennifer, Liku, Zaina, Jama, Mary, Kung'u, Polly, Ngurukiri, Chrispo, Nyamweya, Pooja, Shah, Monica, Okumu, Helen, Weiss, Rupert, Kaul, Tara S, Beattie, Joshua, Kimani, and Faith, Njau
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Adult ,Young Adult ,Sex Workers ,Adolescent ,Public Health, Environmental and Occupational Health ,Humans ,Intimate Partner Violence ,Female ,HIV Infections ,Middle Aged ,Child ,Kenya ,Sex Work - Abstract
Background In Kenya sex work is illegal and those engaged in the trade are stigmatized and marginalized. We explored how female sex workers in Nairobi, Kenya, utilize different resources to navigate the negative consequences of the work they do. Methods Qualitative data were collected in October 2019 from 40 FSWs who were randomly sampled from 1003 women enrolled in the Maisha Fiti study, a 3-year longitudinal mixed-methods study exploring the relationship between HIV risk and violence and mental health. All interviews were audio-recorded, transcribed and translated. Data were thematically coded and analyzed using Nvivo 12. Results Participants’ age range was 18–45 years. Before entry into sex work, all but one had at least one child. Providing for the children was expressed as the main reason the women joined sex work. All the women grew up in adverse circumstances such as poor financial backgrounds and some reported sexual and physical abuse as children. They also continued to experience adversity in their adulthood including intimate partner violence as well as violence at the workplace. All the participants were noted to have utilised the resources they have to build resilience and cope with these adversities while remaining hopeful for the future. Motherhood was mentioned by most as the reason they have remained resilient. Coming together in groups and engaging with HIV prevention and treatment services were noted as important factors too in building resilience. Conclusion Despite the adverse experiences throughout the lives of FSWs, resilience was a key theme that emerged from this study. A holistic approach is needed in addressing the health needs of female sex workers. Encouraging FSWs to come together and advocating together for their needs is a key resource from which resilience and forbearance can grow. Upstream prevention through strengthening of education systems and supporting girls to stay in school and complete their secondary and/or tertiary education would help them gain training and skills, providing them with options for income generation during their adult lives.
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- 2022
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30. Injury volume extracted from MRI predicts neurologic outcome in acute spinal cord injury: A prospective TRACK-SCI pilot study
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Vineeta Singh, William D. Whetstone, Jacqueline C. Bresnahan, Jason F. Talbott, John F. Burke, Michael S. Beattie, J. Russell Huie, Cleopa Omondi, Xuan Duong-Fernandez, Nikos Kyritsis, Geoffrey T. Manley, Anthony M DiGiorgio, Julien Cohen-Adad, Debra D. Hemmerle, Phillip R. Weinstein, Sanjay S. Dhall, Abel Torres-Espín, Mark Harris, Nikhil Mummaneni, Leigh H. Thomas, Jonathan Z. Pan, Lisa U. Pascual, and Adam R. Ferguson
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Adult ,Male ,medicine.medical_specialty ,Cord ,Pilot Projects ,law.invention ,Intramedullary rod ,Lesion ,03 medical and health sciences ,0302 clinical medicine ,law ,Physiology (medical) ,Image Processing, Computer-Assisted ,medicine ,Humans ,Prospective Studies ,Prospective cohort study ,Spinal cord injury ,Spinal Cord Injuries ,medicine.diagnostic_test ,business.industry ,Magnetic resonance imaging ,General Medicine ,Middle Aged ,Prognosis ,medicine.disease ,Spinal cord ,Magnetic Resonance Imaging ,medicine.anatomical_structure ,Spinal Cord ,Neurology ,030220 oncology & carcinogenesis ,Female ,Surgery ,Neurology (clinical) ,Radiology ,Abnormality ,medicine.symptom ,business ,Spinal Cord Compression ,030217 neurology & neurosurgery - Abstract
Conventional MRI measures of traumatic spinal cord injury severity largely rely on 2-dimensional injury characteristics such as intramedullary lesion length and cord compression. Recent advances in spinal cord (SC) analysis have led to the development of a robust anatomic atlas incorporated into an open-source platform called the Spinal Cord Toolbox (SCT) that allows for quantitative volumetric injury analysis. In the current study, we evaluate the prognostic value of volumetric measures of spinal cord injury on MRI following registration of T2-weighted (T2w) images and segmented lesions from acute SCI patients with a standardized atlas. This IRB-approved prospective cohort study involved the image analysis of 60 blunt cervical SCI patients enrolled in the TRACK-SCI clinical research protocol. Axial T2w MRI data obtained within 24 h of injury were processed using the SCT. Briefly, SC MRIs were automatically segmented using the sct_deepseg_sc tool in the SCT and segmentations were manually corrected by a neuro-radiologist. Lesion volume data were used as predictor variables for correlation with lower extremity motor scores at discharge. Volumetric MRI measures of T2w signal abnormality comprising the SCI lesion accurately predict lower extremity motor scores at time of patient discharge. Similarly, MRI measures of injury volume significantly correlated with motor scores to a greater degree than conventional 2-D metrics of lesion size. The volume of total injury and of injured spinal cord motor regions on T2w MRI is significantly and independently associated with neurologic outcome at discharge after injury.
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- 2020
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31. ‘I have the confidence to ask’: thickening agency among adolescent girls in Karnataka, South India
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Satyanarayana Ramanaik, Prakash Javalkar, Tara S Beattie, Beniamino Cislaghi, Ashwini Pujar, Lottie Howard-Merrill, Stephen Moses, Martine Collumbien, Mitzy Gafos, Lori Heise, Parinita Bhattacharjee, Ravi Prakash, Raghavendra Thalinja, and Shajy Isac
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Diffusion theory ,030505 public health ,Health (social science) ,Poverty ,Inequality ,media_common.quotation_subject ,education ,Public Health, Environmental and Occupational Health ,Psychological intervention ,Developmental psychology ,Outreach ,03 medical and health sciences ,0302 clinical medicine ,Cohort ,030212 general & internal medicine ,Thickening ,0305 other medical science ,Psychology ,Qualitative research ,media_common - Abstract
Gender norms serve to normalise gender inequalities and constrain girls' agency. This paper examines how girls' agency, along a continuum, is influenced by the interplay between constraining and enabling influences in the girls' environments. We analyse data from a qualitative study nested within a cluster randomised evaluation of Samata, a multi-layered programme supporting adolescent girls to stay in school and delay marriage in Karnataka, South India. Specifically, we compare agency among 22 girls from intervention communities and 9 girls in control communities using data from the final round of interviews in a qualitative cohort. Using the concept of 'thin' and 'thick' agency on a continuum, we identified shocks like mothers' death or illness, poverty stress, gender norms and poor school performance as thinning influences. Good school examination results; norms in support of education; established educational aspirations; supportive parents, siblings and teachers; and strategic government and Samata resources enabled thicker agency. The intervention programme's effect increased in parallel to the gradient from thin to thicker agency among girls in progressively supportive family contexts. Engagement with the programme was however selective; families adhering to harmful gender norms were not receptive to outreach. In line with diffusion theory, late adopters required additional peer encouragement to change norms.
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- 2020
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32. Toward a Profession of Coaching? A Definitional Examination of ‘Coaching,’ ‘Organization Development,’ and ‘Human Resource Development’
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Robert G. Hamlin, Andrea D. D. Ellinger, and Rona S. Beattie
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Coaching ,Organization Development (OD) ,Human Resource Development (HRD) ,Special aspects of education ,LC8-6691 ,Industrial psychology ,HF5548.7-5548.85 - Abstract
During the past few years, the growth of an emergent ‘coaching industry’ has resulted in some scholars calling for the development of a genuine coaching profession. Yet contemporary organization development (OD) and human resource development (HRD) practitioners conceive of coaching as an extant core component of their respective fields of study and practice. This paper reports the results of a qualitative study that examined different conceptualizations and definitions of ‘coaching,’ OD, and ‘HRD’ found in the respective literatures. The results suggest all three fields of practice are very similar, both in terms of their intended purpose and processes. This finding poses a dilemma and challenge for those who believe a genuine coaching profession with its own identity and unique body of empirically tested knowledge can be distinctly defined and delineated.
- Published
- 2009
33. Remote methods for research on violence against women and children: lessons and challenges from research during the COVID-19 pandemic
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Amiya Bhatia, Ellen Turner, Aggrey Akim, Angel Mirembe, Janet Nakuti, Jenny Parkes, Simone Datzberger, Rehema Nagawa, Mary Kung'u, Hellen Babu, Rhoda Kabuti, Joshua Kimani, Tara S Beattie, Ana Flavia d'Oliveira, Poonam Rishal, Robert Nyakuwa, Sadie Bell, Paul Bukuluki, Beniamino Cislaghi, Clare Tanton, Anne Conolly, Catherine H Mercer, Janet Seeley, Loraine J Bacchus, and Karen Devries
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Adolescent ,Health Policy ,Public Health, Environmental and Occupational Health ,Humans ,COVID-19 ,Female ,Violence ,Child ,Pandemics - Abstract
Collecting data to understand violence against women and children during and after the COVID-19 pandemic is essential to inform violence prevention and response efforts. Although researchers across fields have pivoted to remote rather than in-person data collection, remote research on violence against women, children and young people poses particular challenges. As a group of violence researchers, we reflect on our experiences across eight studies in six countries that we redesigned to include remote data collection methods. We found the following areas were crucial in fulfilling our commitments to participants, researchers, violence prevention and research ethics: (1) designing remote data collection in the context of strong research partnerships; (2) adapting data collection approaches; (3) developing additional safeguarding processes in the context of remote data collection during the pandemic; and (4) providing remote support for researchers. We discuss lessons learnt in each of these areas and across the research design and implementation process, and summarise key considerations for other researchers considering remote data collection on violence.
- Published
- 2022
34. Natural Variation of Cervical Spinal Cord and Canal Morphometrics in Non-Human Primates and its Effect on Spinal Cord Injury Mechanics
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Shervin Jannesar, Ernesto A. Salegio, Cesar Jimenez, Mark H. Tuszynski, Ephron S. Rosenzweig, Michael S. Beattie, Jacqueline C. Bresnahan, and Carolyn J. Sparrey
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History ,Polymers and Plastics ,Business and International Management ,Industrial and Manufacturing Engineering - Published
- 2022
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35. CNS Plasticity in Injury and Disease
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Brandon A. Miller, John C. Gensel, and Michael S. Beattie
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Neurosciences. Biological psychiatry. Neuropsychiatry ,RC321-571 - Published
- 2016
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36. Assessing and predicting neuropathic pain after spinal cord injury: a TRACK-SCI study
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Austin Chou, Vineeta Singh, A. V. Keller, Nikolaos Kyritsis, Jason F. Talbott, Anthony M DiGiorgio, Michael S. Beattie, S. S. Dhall, Debra D. Hemmerle, Lisa U. Pascual, Adam R. Ferguson, William D. Whetstone, Phillip R. Weinstein, Abel Torres-Espín, J.R. Huie, Xuan Duong-Fernandez, Jacqueline C. Bresnahan, K. A. Fond, S. L. Moncivais, June Pan, and John F. Burke
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medicine.medical_specialty ,business.industry ,Chronic pain ,medicine.disease ,Logistic regression ,Polytrauma ,Acute care ,Neuropathic pain ,Cohort ,medicine ,Physical therapy ,Injury Severity Score ,business ,Spinal cord injury - Abstract
Neuropathic pain is one of the most common secondary complications occurring after spinal cord injury (SCI), and often surpasses motor and sensory deficits in the patient population preferences of the most important aspects to be treated. Despite the better understanding of the molecular and physiological mechanisms of neuropathic pain, reliable treatments are still lacking and exhibit wide variations in efficiency. Previous reports have suggested that the most effective pain management is early treatment. To this end, we utilized the TRACK-SCI prospective clinical research database to assess the neuropathic pain status of all enrolled patients and identify acute care variables that can predict the development of neuropathic pain 6- and 12-months post SCI. 36 out of 61 patients of our study cohort reported neuropathic pain at the chronic stages post SCI. Using multidimensional analytics and logistic regression we discovered that (1) the number of total injuries the patient sustained, (2) the injury severity score (ISS), (3) the lower limb total motor score, and (4) the sensory pin prick total score together predict the development of chronic neuropathic pain after SCI. The balanced accuracy of the corresponding logistic regression model is 74.3%, and repeated 5-fold cross validation showed an AUC of 0.708. Our study suggests a crucial role of polytrauma in chronic pain development after SCI and offers a predictive model using variables routinely collected at every hospital setting.
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- 2021
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37. Quantifying the kinematic features of dexterous finger movements in nonhuman primates with markerless tracking
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Ryan North, Rachele Wurr, Ryan Macon, Christopher Mannion, John Hyde, Abel Torres-Espin, Ephron S. Rosenzweig, Adam R. Ferguson, Mark H. Tuszynski, Michael S. Beattie, Jacqueline C. Bresnahan, and Wilsaan M. Joiner
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Fingers ,Male ,Movement ,Animals ,Humans ,Hand ,Macaca mulatta ,Biomechanical Phenomena - Abstract
Research using nonhuman primate models for human disease frequently requires behavioral observational techniques to quantify functional outcomes. The ability to assess reaching and grasping patterns is of particular interest in clinical conditions that affect the motor system (e.g., spinal cord injury, SCI). Here we explored the use of DeepLabCut, an open-source deep learning toolset, in combination with a standard behavioral task (Brinkman Board) to quantify nonhuman primate performance in precision grasping. We examined one male rhesus macaque (Macaca mulatta) in the task which involved retrieving rewards from variously-oriented shallow wells. Simultaneous recordings were made using GoPro Hero7 Black cameras (resolution 1920 x 1080 at 120 fps) from two different angles (from the side and top of the hand motion). The task/device design necessitates use of the right hand to complete the task. Two neural networks (corresponding to the top and side view cameras) were trained using 400 manually annotated images, tracking 19 unique landmarks each. Based on previous reports, this produced sufficient tracking (Side: trained pixel error of 2.15, test pixel error of 11.25; Top: trained pixel error of 2.06, test pixel error of 30.31) so that landmarks could be tracked on the remaining frames. Landmarks included in the tracking were the spatial location of the knuckles and the fingernails of each digit, and three different behavioral measures were quantified for assessment of hand movement (finger separation, middle digit extension and preshaping distance). Together, our preliminary results suggest that this markerless approach is a possible method to examine specific kinematic features of dexterous function.Clinical Relevance- The methodology presented below allows for the markerless tracking of kinematic features of dexterous finger movement by non-human primates. This method could allow for direct comparisons between human patients and non-human primate models of clinical conditions (e.g., spinal cord injury). This would provide objective quantitative metrics and crucial information for assessing movement impairments across populations and the potential translation of treatments, interventions and their outcomes.
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- 2021
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38. Topological network analysis of patient similarity for precision management of acute blood pressure in spinal cord injury
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Abel Torres-Espín, Jenny Haefeli, Reza Ehsanian, Dolores Torres, Carlos A Almeida, J Russell Huie, Austin Chou, Dmitriy Morozov, Nicole Sanderson, Benjamin Dirlikov, Catherine G Suen, Jessica L Nielson, Nikos Kyritsis, Debra D Hemmerle, Jason F Talbott, Geoffrey T Manley, Sanjay S Dhall, William D Whetstone, Jacqueline C Bresnahan, Michael S Beattie, Stephen L McKenna, Jonathan Z Pan, Adam R Ferguson, and The TRACK-SCI Investigators
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medicine ,Blood Pressure ,Neurodegenerative ,surgery ,computational biology ,Lasso (statistics) ,80 and over ,Medicine ,Biology (General) ,Spinal Cord Injury ,Spinal cord injury ,Aged, 80 and over ,Intraoperative ,General Neuroscience ,blood pressure ,systems biology ,General Medicine ,Middle Aged ,Regression ,machine learning ,Neurological ,topological networks analysis ,Research Article ,Computational and Systems Biology ,Human ,TRACK-SCI Investigators ,Adult ,Mean arterial pressure ,Physical Injury - Accidents and Adverse Effects ,Monitoring ,QH301-705.5 ,Science ,Topology ,General Biochemistry, Genetics and Molecular Biology ,Similarity (network science) ,Monitoring, Intraoperative ,Hospital discharge ,Humans ,Arterial Pressure ,human ,Veterans Affairs ,Spinal Cord Injuries ,Traumatic Head and Spine Injury ,Retrospective Studies ,Aged ,General Immunology and Microbiology ,business.industry ,Neurosciences ,Recovery of Function ,medicine.disease ,spinal cord injury ,Blood pressure ,Biochemistry and Cell Biology ,business - Abstract
Background: Predicting neurological recovery after spinal cord injury (SCI) is challenging. Using topological data analysis, we have previously shown that mean arterial pressure (MAP) during SCI surgery predicts long-term functional recovery in rodent models, motivating the present multicenter study in patients. Methods: Intra-operative monitoring records and neurological outcome data were extracted (n = 118 patients). We built a similarity network of patients from a low-dimensional space embedded using a non-linear algorithm, Isomap, and ensured topological extraction using persistent homology metrics. Confirmatory analysis was conducted through regression methods. Results: Network analysis suggested that time outside of an optimum MAP range (hypotension or hypertension) during surgery was associated with lower likelihood of neurological recovery at hospital discharge. Logistic and LASSO (least absolute shrinkage and selection operator) regression confirmed these findings, revealing an optimal MAP range of 76–[104-117] mmHg associated with neurological recovery. Conclusions: We show that deviation from this optimal MAP range during SCI surgery predicts lower probability of neurological recovery and suggest new targets for therapeutic intervention. Funding: NIH/NINDS: R01NS088475 (ARF); R01NS122888 (ARF); UH3NS106899 (ARF); Department of Veterans Affairs: 1I01RX002245 (ARF), I01RX002787 (ARF); Wings for Life Foundation (ATE, ARF); Craig H. Neilsen Foundation (ARF); and DOD: SC150198 (MSB); SC190233 (MSB); DOE: DE-AC02-05CH11231 (DM)., eLife digest Spinal cord injury is a devastating condition that involves damage to the nerve fibers connecting the brain with the spinal cord, often leading to permanent changes in strength, sensation and body functions, and in severe cases paralysis. Scientists around the world work hard to find ways to treat or even repair spinal cord injuries but few patients with complete immediate paralysis recover fully. Immediate paralysis is caused by direct damage to neurons and their extension in the spinal cord. Previous research has shown that blood pressure regulation may be key in saving these damaged neurons, as spinal cord injuries can break the communication between nerves that is involved in controlling blood pressure. This can lead to a vicious cycle of dysregulation of blood pressure and limit the supply of blood and oxygen to the damaged spinal cord tissue, exacerbating the death of spinal neurons. Management of blood pressure is therefore a key target for spinal cord injury care, but so far, the precise thresholds to enable neurons to recover are poorly understood. To find out more, Torres-Espin, Haefeli et al. used machine learning software to analyze previously recorded blood pressure and heart rate data obtained from 118 patients that underwent spinal cord surgery after acute spinal cord injury. The analyses revealed that patients who suffered from either low or high blood pressure during surgery had poorer prospects of recovery. Statistical models confirming these findings showed that the optimal blood pressure range to ensure recovery lies between 76 to 104-117 mmHg. Any deviation from this narrow window would dramatically worsen the ability to recover. These findings suggests that dysregulated blood pressure during surgery affects to odds of recovery in patients with a spinal cord injury. Torres-Espin, Haefeli et al. provide specific information that could improve current clinical practice in trauma centers. In the future, such machine learning tools and models could help develop real-time models that could predict the likelihood of a patient’s recovery following spinal cord injury and related neurological conditions.
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- 2021
39. Expert-integrated automated machine learning uncovers hemodynamic predictors in spinal cord injury
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Rajiv Shah, J. Russell Huie, Michael S. Beattie, Jonathan Z. Pan, Sarah Khatry, Chandler McCann, William D. Whetstone, Nikos Kyritsis, Jeremy Funk, Austin Chou, Edilberto Amorim, Andrew Lofgreen, Sanjay S. Dhall, Jacqueline C. Bresnahan, Jennifer Hay, Lisa U. Pascual, Adam R. Ferguson, Geoffrey T. Manley, Abel Torres-Espín, and Philip Weinstein
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Blood pressure management ,Computer science ,business.industry ,Machine learning ,computer.software_genre ,medicine.disease ,Model validation ,Subject-matter expert ,Feature (machine learning) ,medicine ,Model development ,Artificial intelligence ,business ,computer ,Spinal cord injury ,Predictive modelling ,Biomedicine - Abstract
Automated machine learning (AutoML) is positioned to democratize artificial intelligence (AI) by reducing the amount of human input and ML expertise needed to create prediction models. However, successful translation of ML in biomedicine requires moving beyond optimizing only for prediction accuracy and towards discovering reproducible clinical and biological inferences. Here, we present a model-agnostic framework to reinforce AutoML using strategies and tools of explainable and reproducible AI, including novel metrics for performance precision and feature instability. The framework enables clinicians to interpret AutoML-generated models for clinical and biological verifiability and consequently integrate domain expertise during model development. We applied the framework towards spinal cord injury prognostication and identified a detrimental relationship between intraoperative hypertension and patient outcome. Furthermore, our analysis captured evolving clinical practices such as faster time-to-surgery and blood pressure management that affected clinical model validation. Altogether, we illustrate how augmenting AutoML for inferential reproducibility empowers biomedical discovery and builds trust in AI processes towards effective clinical integration.
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- 2021
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40. Rhesus macaque versus rat divergence in the corticospinal projectome
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Eleni Sinopoulou, Ephron S. Rosenzweig, James M. Conner, Daniel Gibbs, Chase A. Weinholtz, Janet L. Weber, John H. Brock, Yvette S. Nout-Lomas, Eric Ovruchesky, Yoshio Takashima, Jeremy S. Biane, Hiromi Kumamaru, Leif A. Havton, Michael S. Beattie, Jacqueline C. Bresnahan, and Mark H. Tuszynski
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Brain Mapping ,Spinal Cord ,General Neuroscience ,Motor Cortex ,Pyramidal Tracts ,Animals ,Macaca mulatta ,Axons ,Rats - Abstract
We used viral intersectional tools to map the entire projectome of corticospinal neurons associated with fine distal forelimb control in Fischer 344 rats and rhesus macaques. In rats, we found an extraordinarily diverse set of collateral projections from corticospinal neurons to 23 different brain and spinal regions. Remarkably, the vast weighting of this "motor" projection was to sensory systems in both the brain and spinal cord, confirmed by optogenetic and transsynaptic viral intersectional tools. In contrast, rhesus macaques exhibited far heavier and narrower weighting of corticospinal outputs toward spinal and brainstem motor systems. Thus, corticospinal systems in macaques primarily constitute a final output system for fine motor control, whereas this projection in rats exerts a multi-modal integrative role that accesses far broader CNS regions. Unique structural-functional correlations can be achieved by mapping and quantifying a single neuronal system's total axonal output and its relative weighting across CNS targets.
- Published
- 2021
41. The relationship between intimate partner violence and probable depression among adolescent girls and young women in Lilongwe, Malawi
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Nora E. Rosenberg, Linda-Gail Bekker, Dhrutika Vansia, Melanie Abas, Bertha Maseko, Tara S Beattie, Savvy K. Brar, Audrey Pettifor, and Twambilile Phanga
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Controlling behaviour ,Malawi ,Adolescent ,Depression scale ,media_common.quotation_subject ,Psychological intervention ,Intimate Partner Violence ,Young Adult ,03 medical and health sciences ,0302 clinical medicine ,Risk Factors ,Prevalence ,Humans ,Medicine ,030212 general & internal medicine ,Girl ,Depression (differential diagnoses) ,media_common ,Conflict tactics scale ,030505 public health ,Depression ,business.industry ,Public Health, Environmental and Occupational Health ,Confidence interval ,Domestic violence ,Female ,0305 other medical science ,business ,Demography - Abstract
This analysis estimates prevalence of intimate partner violence (IPV) and its association with probable depression among adolescent girls and young women (AGYW) in Lilongwe, Malawi, and whether partner's controlling behaviour modifies this relationship. Baseline data was utilised from the Girl Power-Malawi study of 1000 15-24-year-old AGYW in Lilongwe. Emotional, physical, and sexual IPV experiences with a current or recent partner were measured using the modified Conflict Tactics Scale. Probable depression was measured by scoring ≥10 on the Centre for Epidemiologic Studies-Short Depression Scale (CES-D-10). Generalised linear models with log-link and binomial distribution estimated prevalence ratios (PR) and 95% confidence intervals (CI) for the association between IPV types and probable depression. Partner's controlling behaviour was examined as an effect modifier. Participants' mean age was 19.2 years, with 70% never-married. IPV prevalence varied for emotional (59%), physical (36%), sexual (46%), and all forms (20%). Prevalence of probable depression was 47%. AGYW who experienced each IPV type had a higher prevalence of probable depression: physical (PR:1.54, CI:1.28-1.86), sexual (1.46, CI:1.21-1.75), emotional (1.37, CI:1.14-1.64), all forms (1.72, CI:1.41-2.09). IPV and probable depression were prevalent and strongly associated, especially among AGYW reporting controlling behaviour. Interventions addressing IPV and controlling behaviour may positively impact depression among AGYW.
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- 2020
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42. Clinical Implementation of Novel Spinal Cord Perfusion Pressure Protocol in Acute Traumatic Spinal Cord Injury at U.S. Level I Trauma Center: TRACK-SCI Study
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Ethan A. Winkler, William D. Whetstone, Leigh H. Thomas, Xuan Duong Fernandez, John K. Yue, Jason F. Talbott, Sanjay S. Dhall, Debra D. Hemmerle, Praveen V. Mummaneni, Vineeta Singh, Jonathan Z. Pan, Michael S. Beattie, Nikolaos Kyritsis, Lisa U. Pascual, J. Russell Huie, Adam R. Ferguson, Jacqueline C. Bresnahan, Philip Weinstein, and Geoffrey T. Manley
- Subjects
Mean arterial pressure ,Traumatic spinal cord injury ,Thoracic Vertebrae ,03 medical and health sciences ,Surgical decompression ,0302 clinical medicine ,Blunt ,Clinical Protocols ,Trauma Centers ,Cerebrospinal Fluid Pressure ,Ischemia ,medicine ,Humans ,Vasoconstrictor Agents ,Infusions, Intravenous ,Spinal cord injury ,Spinal Cord Injuries ,Aged ,business.industry ,Trauma center ,Laminectomy ,Standard of Care ,Middle Aged ,Decompression, Surgical ,Spinal cord ,medicine.disease ,Combined Modality Therapy ,Treatment Outcome ,medicine.anatomical_structure ,Spinal Cord ,030220 oncology & carcinogenesis ,Anesthesia ,Cervical Vertebrae ,Drainage ,Fluid Therapy ,Surgery ,Neurology (clinical) ,business ,Perfusion ,030217 neurology & neurosurgery - Abstract
We sought to report the safety of implementation of a novel standard of care protocol using spinal cord perfusion pressure (SCPP) maintenance for managing traumatic spinal cord injury (SCI) in lieu of mean arterial pressure goals at a U.S. Level I trauma center.Starting in December 2017, blunt SCI patients presenting24 hours after injury with admission American Spinal Injury Association Impairment Scale (AIS) A-C (or AIS D at neurosurgeon discretion) received lumbar subarachnoid drain (LSAD) placement for SCPP monitoring in the intensive care unit and were included in the TRACK-SCI (Transforming Research and Clinical Knowledge in Spinal Cord Injury) data registry. This SCPP protocol comprises standard care at our institution. SCPPs were monitored for 5 days (goal ≥65 mm Hg) achieved through intravenous fluids and vasopressor support. AISs were assessed at admission and day 7.Fifteen patients enrolled to date were aged 60.5 ± 17 years. Injury levels were 93.3% (cervical) and 6.7% (thoracic). Admission AIS was 20.0%/20.0%/26.7%/33.3% for A/B/C/D. All patients maintained mean SCPP ≥65 mm Hg during monitoring. Fourteen of 15 cases required surgical decompression and stabilization with time to surgery 8.8 ± 7.1 hours (71.4%12 hours). At day 7, 33.3% overall and 50% of initial AIS A-C had an improved AIS. Length of stay was 14.7 ± 8.3 days. None had LSAD-related complications. There were 7 respiratory complications. One patient expired after transfer to comfort care.In our initial experience of 15 patients with acute SCI, standardized SCPP goal-directed care based on LSAD monitoring for 5 days was feasible. There were no SCPP-related complications. This is the first report of SCPP implementation as clinical standard of care in acute SCI.
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- 2020
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43. Exploration of surgical blood pressure management and expected motor recovery in individuals with traumatic spinal cord injury
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Stephen McKenna, Reza Ehsanian, James Crew, Dolores Torres, Jessica Endo, Jacqueline C. Bresnahan, Michael S. Beattie, Jenny Haefeli, Nhung Quach, Adam R. Ferguson, Jacob J. Kosarchuk, Benjamin Dirlikov, and Ellen D. Stuck
- Subjects
Blood pressure management ,030506 rehabilitation ,medicine.medical_specialty ,Traumatic spinal cord injury ,business.industry ,General Medicine ,03 medical and health sciences ,0302 clinical medicine ,Physical medicine and rehabilitation ,Neurology ,medicine ,Motor recovery ,Neurology (clinical) ,0305 other medical science ,business ,030217 neurology & neurosurgery - Abstract
Study design Retrospective analysis. Objective To assess the impact of mean arterial blood pressure (MAP) during surgical intervention for spinal cord injury (SCI) on motor recovery. Setting Level-one Trauma Hospital and Acute Rehabilitation Hospital in San Jose, CA, USA. Methods Twenty-five individuals with traumatic SCI who received surgical and acute rehabilitation care at a level-one trauma center were included in this study. The Surgical Information System captured intraoperative MAPs on a minute-by-minute basis and exposure was quantified at sequential thresholds from 50 to 104 mmHg. Change in International Standards for Neurological Classification of Spinal Cord Injury (ISNCSCI) motor score was calculated based on physiatry evaluations at the earliest postoperative time and at discharge from acute rehabilitation. Linear regression models were used to estimate the rate of recovery across the entire MAP range. Results An exploratory analysis revealed that increased time within an intraoperative MAP range (70–94 mmHg) was associated with ISNCSCI motor score improvement. A significant regression equation was found for the MAP range 70–94 mmHg (F[1, 23] = 4.65, r2 = 0.168, p = 0.042). ISNCSCI motor scores increased 0.036 for each minute of exposure to the MAP range 70–94 mmHg during the operative procedure; this represents a significant correlation between intraoperative time with MAP 70–94 and subsequent motor recovery. Blood pressure exposures above or below this range did not display a positive association with motor recovery. Conclusions Hypertension as well as hypotension during surgery may impact the trajectory of recovery in individuals with SCI, and there may be a direct relationship between intraoperative MAP and motor recovery.
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- 2019
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44. The cost of safe sex: estimating the price premium for unprotected sex during the Avahan HIV prevention programme in India
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Matthew Quaife, Ramesh S. Paranjape, Tara S Beattie, Kathleen N. Deering, Shajy Isac, Aurélia Lépine, Fern Terris-Prestholt, and Peter Vickerman
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Adult ,Safe Sex ,Unprotected Sexual Intercourse ,HIV prevention ,India ,HIV Infections ,condom use ,Price premium ,law.invention ,Condoms ,03 medical and health sciences ,0302 clinical medicine ,Condom ,Acquired immunodeficiency syndrome (AIDS) ,law ,0502 economics and business ,medicine ,Humans ,030212 general & internal medicine ,050207 economics ,sex workers ,Sex work ,Sex Workers ,instrumental variables ,Earnings ,Health Policy ,05 social sciences ,Commerce ,HIV ,virus diseases ,Original Articles ,compensating differential ,medicine.disease ,Sexual intercourse ,Cross-Sectional Studies ,Bargaining power ,Female ,sex work ,Business ,Demography - Abstract
There is some evidence that female sex workers (FSWs) receive greater earnings for providing unprotected sex. In 2003, the landscape of the fight against HIV/AIDS dramatically changed in India with the introduction of Avahan, the largest HIV prevention programme implemented globally. Using a unique, cross-sectional bio-behavioural dataset from 3591 FSWs located in the four Indian states where Avahan was implemented, we estimate the economic loss faced by FSWs who always use condoms. We estimate the causal effect of condom use on the price charged during the last paid sexual intercourse using the random targeting of Avahan as an instrumental variable. Results indicate that FSWs who always use condoms face an income loss of 65% (INR125, US$2.60) per sex act compared to peers providing unprotected sex, consistent with our expectations. The main finding confirms that clients have a preference for unprotected sex and that policies aiming at changing clients’ preferences and at improving the bargaining power of FSWs are required to limit the spread of HIV.
- Published
- 2019
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45. Comparing the impact of management on public and private nurses in Bangladesh
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Rona S. Beattie, Frank Crossan, Farr-Wharton Ben, Yvonne Brunetto, and Matthew Xerri
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Public Administration ,Corruption ,business.industry ,media_common.quotation_subject ,05 social sciences ,Geography, Planning and Development ,Public sector ,Political Science & Public Administration ,Developing country ,Context (language use) ,Management, Monitoring, Policy and Law ,Private sector ,0506 political science ,Work (electrical) ,0502 economics and business ,Political Science and International Relations ,050602 political science & public administration ,Harassment ,Demographic economics ,Business ,050203 business & management ,Line management ,media_common - Abstract
Purpose The purpose of this paper is to use conservation of resources (COR) theory as a lens for comparing the impact of line management on Bangladeshi public and private nurses’ perception of work harassment, well-being and turnover intentions where Anglo-American and European management models have been super-imposed on an existing different culture. Design/methodology/approach Survey data were collected from 317 Bangladeshi nurses’ (131 from the public sector and 186 from the private sector). Structural equation modelling was used for analysis. Findings High work harassment was associated with low-being, and together with management practices, it explained approximately a quarter of private sector nurses’ well-being. In total, management, work harassment and employee well-being explained approximately a third of the turnover intentions of public sector nurses, whereas only work harassment explained approximately a third of private sector nurses’ turnover intentions. The findings suggest a differential impact of management on work harassment across the public and private sector. Research limitations/implications Cross-sectional data are susceptible to common method bias. A common latent factor was included, and several items that were explained by common method variance were controlled. Further, the findings are limited by the sample size from one sector and the use of only one developing country. Practical implications It is a waste of resources to transplant Anglo-American and European management models to developing countries without understanding the impact on nurses’ outcomes. Originality/value Anglo-American and European management models are not easily transferable to the Bangladesh context probably because of the impact of ties and corruption. Line management is a positive resource that builds employee well-being for public sector employees only.
- Published
- 2019
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46. Changing role of HRM in the public sector
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Rona S. Beattie and Yvonne Brunetto
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business.industry ,05 social sciences ,Public sector ,Champion ,Public administration ,0506 political science ,Management Information Systems ,Management of Technology and Innovation ,Human resource management ,Public management ,0502 economics and business ,050602 political science & public administration ,business ,050203 business & management - Abstract
HRM refers to how employees are managed and one of the main functions of this discipline is the role of ‘employee champion’ (Ulrich 1997), however, this role has changed significantly in the public...
- Published
- 2019
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47. The Irvine, Beatties and Bresnahan (IBB) forelimb recovery scale: An assessment of reliability and validity
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Karen Amanda Irvine, Adam R Ferguson, Kathleen D. Mitchell, Stephanie B. Beattie, Amity eLin, Ellen D. Stuck, J Russell Huie, Jessica L. Nielson, Jason F. Talbott, Tomoo eInoue, Michael S Beattie, and Jacqueline C. Bresnahan
- Subjects
Recovery of Function ,spinal cord injury ,Reliability ,validity ,forelimb functional task ,Neurology. Diseases of the nervous system ,RC346-429 - Abstract
The IBB scale is a recently developed forelimb scale for the assessment of fine control of the forelimb and digits after cervical spinal cord injury (SCI; Irvine et al., 2010). The present paper describes the assessment of inter-rater reliability and face, concurrent and construct validity of this scale following SCI. It demonstrates that the IBB is a reliable and valid scale that is sensitive to severity of SCI and to recovery over time. In addition, the IBB correlates with other outcome measures and is highly predictive of biological measures of tissue pathology. Multivariate analysis using principal component analysis (PCA) demonstrates that the IBB is highly predictive of the syndromic outcome after SCI (Ferguson et al., 2013), and is among the best predictors of bio-behavioral function, based on strong construct validity. Altogether, the data suggest that the IBB, especially in concert with other measures, is a reliable and valid tool for assessing neurological deficits in fine motor control of the distal forelimb, and represents a powerful addition to multivariate outcome batteries aimed at documenting recovery of function after cervical SCI in rats.
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- 2014
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48. DNA glycosylases involved in base excision repair may be associated with cancer risk in BRCA1 and BRCA2 mutation carriers.
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Ana Osorio, Roger L Milne, Karoline Kuchenbaecker, Tereza Vaclová, Guillermo Pita, Rosario Alonso, Paolo Peterlongo, Ignacio Blanco, Miguel de la Hoya, Mercedes Duran, Orland Díez, Teresa Ramón Y Cajal, Irene Konstantopoulou, Cristina Martínez-Bouzas, Raquel Andrés Conejero, Penny Soucy, Lesley McGuffog, Daniel Barrowdale, Andrew Lee, SWE-BRCA, Brita Arver, Johanna Rantala, Niklas Loman, Hans Ehrencrona, Olufunmilayo I Olopade, Mary S Beattie, Susan M Domchek, Katherine Nathanson, Timothy R Rebbeck, Banu K Arun, Beth Y Karlan, Christine Walsh, Jenny Lester, Esther M John, Alice S Whittemore, Mary B Daly, Melissa Southey, John Hopper, Mary B Terry, Saundra S Buys, Ramunas Janavicius, Cecilia M Dorfling, Elizabeth J van Rensburg, Linda Steele, Susan L Neuhausen, Yuan Chun Ding, Thomas V O Hansen, Lars Jønson, Bent Ejlertsen, Anne-Marie Gerdes, Mar Infante, Belén Herráez, Leticia Thais Moreno, Jeffrey N Weitzel, Josef Herzog, Kisa Weeman, Siranoush Manoukian, Bernard Peissel, Daniela Zaffaroni, Giulietta Scuvera, Bernardo Bonanni, Frederique Mariette, Sara Volorio, Alessandra Viel, Liliana Varesco, Laura Papi, Laura Ottini, Maria Grazia Tibiletti, Paolo Radice, Drakoulis Yannoukakos, Judy Garber, Steve Ellis, Debra Frost, Radka Platte, Elena Fineberg, Gareth Evans, Fiona Lalloo, Louise Izatt, Ros Eeles, Julian Adlard, Rosemarie Davidson, Trevor Cole, Diana Eccles, Jackie Cook, Shirley Hodgson, Carole Brewer, Marc Tischkowitz, Fiona Douglas, Mary Porteous, Lucy Side, Lisa Walker, Patrick Morrison, Alan Donaldson, John Kennedy, Claire Foo, Andrew K Godwin, Rita Katharina Schmutzler, Barbara Wappenschmidt, Kerstin Rhiem, Christoph Engel, Alfons Meindl, Nina Ditsch, Norbert Arnold, Hans Jörg Plendl, Dieter Niederacher, Christian Sutter, Shan Wang-Gohrke, Doris Steinemann, Sabine Preisler-Adams, Karin Kast, Raymonda Varon-Mateeva, Andrea Gehrig, Dominique Stoppa-Lyonnet, Olga M Sinilnikova, Sylvie Mazoyer, Francesca Damiola, Bruce Poppe, Kathleen Claes, Marion Piedmonte, Kathy Tucker, Floor Backes, Gustavo Rodríguez, Wendy Brewster, Katie Wakeley, Thomas Rutherford, Trinidad Caldés, Heli Nevanlinna, Kristiina Aittomäki, Matti A Rookus, Theo A M van Os, Lizet van der Kolk, J L de Lange, Hanne E J Meijers-Heijboer, A H van der Hout, Christi J van Asperen, Encarna B Gómez Garcia, Nicoline Hoogerbrugge, J Margriet Collée, Carolien H M van Deurzen, Rob B van der Luijt, Peter Devilee, HEBON, Edith Olah, Conxi Lázaro, Alex Teulé, Mireia Menéndez, Anna Jakubowska, Cezary Cybulski, Jacek Gronwald, Jan Lubinski, Katarzyna Durda, Katarzyna Jaworska-Bieniek, Oskar Th Johannsson, Christine Maugard, Marco Montagna, Silvia Tognazzo, Manuel R Teixeira, Sue Healey, KConFab Investigators, Curtis Olswold, Lucia Guidugli, Noralane Lindor, Susan Slager, Csilla I Szabo, Joseph Vijai, Mark Robson, Noah Kauff, Liying Zhang, Rohini Rau-Murthy, Anneliese Fink-Retter, Christian F Singer, Christine Rappaport, Daphne Geschwantler Kaulich, Georg Pfeiler, Muy-Kheng Tea, Andreas Berger, Catherine M Phelan, Mark H Greene, Phuong L Mai, Flavio Lejbkowicz, Irene Andrulis, Anna Marie Mulligan, Gord Glendon, Amanda Ewart Toland, Anders Bojesen, Inge Sokilde Pedersen, Lone Sunde, Mads Thomassen, Torben A Kruse, Uffe Birk Jensen, Eitan Friedman, Yael Laitman, Shani Paluch Shimon, Jacques Simard, Douglas F Easton, Kenneth Offit, Fergus J Couch, Georgia Chenevix-Trench, Antonis C Antoniou, and Javier Benitez
- Subjects
Genetics ,QH426-470 - Abstract
Single Nucleotide Polymorphisms (SNPs) in genes involved in the DNA Base Excision Repair (BER) pathway could be associated with cancer risk in carriers of mutations in the high-penetrance susceptibility genes BRCA1 and BRCA2, given the relation of synthetic lethality that exists between one of the components of the BER pathway, PARP1 (poly ADP ribose polymerase), and both BRCA1 and BRCA2. In the present study, we have performed a comprehensive analysis of 18 genes involved in BER using a tagging SNP approach in a large series of BRCA1 and BRCA2 mutation carriers. 144 SNPs were analyzed in a two stage study involving 23,463 carriers from the CIMBA consortium (the Consortium of Investigators of Modifiers of BRCA1 and BRCA2). Eleven SNPs showed evidence of association with breast and/or ovarian cancer at p
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- 2014
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49. Tumor Necrosis Factor-α Induces cFOS and Strongly Potentiates Glutamate-Mediated Cell Death in the Rat Spinal Cord
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Gerlinda E. Hermann, Richard C. Rogers, Jacqueline C. Bresnahan, and Michael S. Beattie
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spinal cord injury ,cytokines ,glutamate ,cFOS ,excitotoxic cell death ,microglia ,Neurosciences. Biological psychiatry. Neuropsychiatry ,RC321-571 - Abstract
Excitotoxic cell death due to glutamate release is important in the secondary injury following CNS trauma or ischemia. Proinflammatory cytokines also play a role. Both glutamate and tumor necrosis factor-α (TNFα) are released immediately after spinal cord injury. Neurophysiological studies show that TNFα can potentiate the effects of glutamatergic afferent input to produce hyperactivation of brain-stem sensory neurons. Therefore, we hypothesized that TNFα might act cooperatively with glutamate to affect cell death in the spinal cord as well. Nanoinjections of either TNFα (60 pg) or kainate (KA; 32 ng) alone into the thoracic gray resulted in almost no tissue damage or cell death 90 min after injection. However, the combination of TNFα plus KA at these same doses produced a large area of tissue necrosis and neuronal cell death, an effect which was blocked by the AMPA receptor antagonist CNQX (17 ng). These results suggest that secondary injury may involve potentiation of AMPA receptor-mediated excitatory cell death by TNFα.
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- 2001
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50. Mental health, physical impairment and violence among FSWS in North Karnataka, South India: a story of intersecting vulnerabilities
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Tara S Beattie, Charlotte Watts, Mitzy Gafos, Calum Davey, Shajy Isac, Alicja Beksinska, Martine Collumbien, Satyanarayana Ramanaik, Kavitha Dibbadahalli, Parinita Bhattacharjee, Ravi Prakash, Rachel Jewkes, and Lucy Platt
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ePoster Presentations ,medicine.medical_specialty ,Multivariate analysis ,Sexual violence ,business.industry ,media_common.quotation_subject ,Research ,Mental health ,Psychiatry and Mental health ,Hygiene ,Global health ,medicine ,Anxiety ,medicine.symptom ,Psychiatry ,business ,Suicidal ideation ,Depression (differential diagnoses) ,media_common - Abstract
AimsThis study examines the prevalence and associations between recent violence experience, mental health and physical health impairment among Female Sex Workers (FSWs) in north Karnataka, India.BackgroundMulti-morbidity, in particular the overlap between physical and mental health problems, is an important global health challenge to address. FSWs experience high levels of gender-based violence, which increases the risk of poor mental health, however there is limited information on the prevalence of physical health impairments and how this interacts with mental health and violence.MethodWe conducted secondary analysis of cross-sectional quantitative survey data collected in 2016 as part of a cluster-RCT with FSWs called Samvedana Plus. Bivariate and multivariate analyses were used to examine associations between physical impairment, recent (past 6 months) physical or sexual violence from any perpetrator, and mental health problems measured by PHQ-2 (depression), GAD-2 (anxiety), any common mental health problem (depression or anxiety), self-harm ever and suicidal ideation ever.Result511 FSWs participated. One fifth had symptoms of depression (21.5%) or anxiety (22.1%), one third (34.1%) reported symptoms of either, 4.5% had ever self-harmed and 5.5% reported suicidal ideation ever. Over half (58.1%) reported recent violence. A quarter (27.6%) reported one or more chronic physical impairments. Mental health problems such as depression were higher among those who reported recent violence (29%) compared to those who reported no recent violence (11%). There was a step-wise increase in the proportion of women with mental health problems as the number of physical impairments increased (e.g. depression 18.1% no impairment; 30.2% one impairment; 31.4% ≥ two impairments). In adjusted analyses, mental health problems were significantly more likely among women who reported recent violence (e.g. depression and violence AOR 2.42 (1.24–4.72) with rates highest among women reporting recent violence and one or more physical impairments (AOR 5.23 (2.49–10.97).ConclusionOur study suggests multi-morbidity of mental and physical health problems is a concern amongst FSWs and is associated with recent violence experience. Programmes working with FSWs need to be mindful of these intersecting vulnerabilities, inclusive of women with physical health impairments and include treatment for mental health problems as part of core-programming.Samvedana Plus was funded by UKaid through Department for International Development as part of STRIVE (structural drivers of HIV) led by London School of Hygiene and Tropical Medicine and the What Works to Prevent Violence Against Women and Girls Global Programme led by South African Medical Research Council
- Published
- 2021
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