20 results on '"Nichols G"'
Search Results
2. Does malocclusion affect oral health-related quality of life? : a review of the literature
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Nichols, G. A. L., Broadbent, J. M., and Farella, Mauro
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- 2022
3. MA16.08 Impact of Site of CAN-2409 Injection Plus Continued Immune Checkpoint Inhibitor (ICI) In CI-resistant stage III/IV NSCLC
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Sterman, D., Aggarwal, C., Alesi, E.R., Maldonado, F., Mehra, R., Bestvina, C., Reisenauer, J.S., Swartz, L.K., Puri, S., Ibrahim, O., Eapen, G., Duault, C., Del Valle, D.M., Kim-Schulze, S., Gonzalez-Kozlova, E., Gnjatic, S., Manzanera, A., Lopez, L., Dwyer, J., Rao, S., Nichols, G., Barone, F., and Tak, P.P.
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- 2024
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4. P518: PEDAL/EUPAL INTERNATIONAL COLLABORATION TO IMPROVE THE OUTCOME OF CHILDREN WITH RELAPSED OR REFRACTORY ACUTE MYELOID LEUKEMIA
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Ceolin, V., primary, Ishimaru, S., additional, Bautista, F., additional, Goemans, B., additional, Kolb, E. A., additional, Di Laurenzio, L., additional, Cooper, T. M., additional, Bakker, M., additional, Wahlstrom, J., additional, Sunkersett, G., additional, Ku, G., additional, Zwaan, C., additional, Reinhardt, D., additional, and Nichols, G., additional
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- 2022
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5. Analysis of environmental factors influencing endemic cholera risks in sub-Saharan Africa.
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Girotto CD, Behzadian K, Musah A, Chen AS, Djordjević S, Nichols G, and Campos LC
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- Humans, Africa South of the Sahara epidemiology, Disease Outbreaks, Sanitation methods, Water, Cholera epidemiology
- Abstract
The recurring cholera outbreaks in sub-Saharan Africa are of growing concern, especially considering the potential acceleration in the global trend of larger and more lethal cholera outbreaks due to the impacts of climate change. However, there is a scarcity of evidence-based research addressing the environmental and infrastructure factors that sustain cholera recurrence in Africa. This study adopts a statistical approach to investigate over two decades of endemic cholera outbreaks and their relationship with five environmental factors: water provision, sanitation provision, raising temperatures, increased rainfall and GDP. The analysis covers thirteen of the forty-two countries in the mainland sub-Saharan region, collectively representing one-third of the region's territory and half of its population. This breadth enables the findings to be generalised at a regional level. Results from all analyses consistently associate water provision with cholera reduction. The stratified model links increased water provision with a reduction in cholera risk that ranged from 4.2 % to 84.1 % among eight countries (out of 13 countries) as well as a reduction of such risk that ranged from 9.8 % to 68.9 % when there is increased sanitation provision, which was observed in nine countries (out of 13). These results indicate that the population's limited access to water and sanitation, as well as the rise in temperatures, are critical infrastructure and environmental factors contributing to endemic cholera and the heightened risk of outbreaks across the sub-Saharan region. Therefore, these are key areas for targeted interventions and cross-border collaboration to enhance resilience to outbreaks and lead to the end of endemic cholera in the region. However, it is important to interpret the results of this study with caution; hence, further investigation is recommended to conduct a more detailed analysis of the impact of infrastructure and environmental factors on reducing cholera risk., Competing Interests: Declaration of competing interest The authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper., (Copyright © 2024 The Authors. Published by Elsevier B.V. All rights reserved.)
- Published
- 2024
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6. Defining the Minimal Long-Term Follow-Up Data Elements for Newborn Screening.
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Kellar-Guenther Y, Barringer L, Raboin K, Nichols G, Chou KYF, Nguyen K, Burke AR, Fawbush S, Meyer JB, Dorsey M, Brower A, Chan K, Lietsch M, Taylor J, Caggana M, and Sontag MK
- Abstract
Newborn screening (NBS) is hailed as a public health success, but little is known about the long-term outcomes following a positive newborn screen. There has been difficulty gathering long-term follow-up (LTFU) data consistently, reliably, and with minimal effort. Six programs developed and tested a core set of minimal LTFU data elements. After an iterative data collection process and the development of a data collection tool, the group agreed on the minimal LTFU data elements. The denominator captured all infants with an NBS diagnosis, accounting for children who moved or died prior to the follow-up year. They also agreed on three LTFU outcomes: if the child was still alive, had contact with a specialist, and received appropriate care specific to their diagnosis within the year. The six programs representing NBS public health programs, clinical providers, and research programs provided data across multiple NBS disorders. In 2022, 83.8% (563/672) of the children identified by the LTFU programs were alive and living in the jurisdiction; of those, 92.0% (518/563) saw a specialist, and 87.7% (494/563) received appropriate care. The core LTFU data elements can be applied as a foundation to address the impact of early diagnosis by NBS within and across jurisdictions.
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- 2024
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7. Drug development for major chronic health conditions-aligning with growing public health needs: Proceedings from a multistakeholder think tank.
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Krychtiuk KA, Andersson TL, Bodesheim U, Butler J, Curtis LH, Elkind M, Hernandez AF, Hornik C, Lyman GH, Khatri P, Mbagwu M, Murakami M, Nichols G, Roessig L, Young AQ, Schilsky RL, and Pagidipati N
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- Humans, Delivery of Health Care, Drug Development, Drug Industry, Public Health, Neoplasms
- Abstract
The global pharmaceutical industry portfolio is skewed towards cancer and rare diseases due to more predictable development pathways and financial incentives. In contrast, drug development for major chronic health conditions that are responsible for a large part of mortality and disability worldwide is stalled. To examine the processes of novel drug development for common chronic health conditions, a multistakeholder Think Tank meeting, including thought leaders from academia, clinical practice, non-profit healthcare organizations, the pharmaceutical industry, the Food and Drug Administration (FDA), payors as well as investors, was convened in July 2022. Herein, we summarize the proceedings of this meeting, including an overview of the current state of drug development for chronic health conditions and key barriers that were identified. Six major action items were formulated to accelerate drug development for chronic diseases, with a focus on improving the efficiency of clinical trials and rapid implementation of evidence into clinical practice., Competing Interests: Conflict of interest Konstantin A. Krychtiuk: advisory boards Novartis, Sanofi, Amgen; speaker fees Amgen, Daichii Sankyo, Zoll Medical Tomas LG Andersson: employed by AstraZeneca, owns stock in AstraZeneca, travel support by AstraZeneca Ulrike Bodesheim employed by Bayer AG; Javed Butler: Consulting fees: 3ivelabs, Abbott, Amgen, American Regent, Applied Therapeutics, AstraZeneca, Bayer, Boehringer Ingelheim, Bristol Myers Squibb, Cardiac Dimension, Cardior, CVRx, Cytokinetics, Edwards, Element, Faraday, G3 Pharmaceutical, Imbria, Impulse Dynamics, Innolife, Inventiva, Ionis, Janssen, LivaNova, Lexicon, Medtronic, Merck, Novartis, Novo Nordisk, Otsuka, Occlutech, PharmaCosmos, Roche, Sanofi, Secretome, Sequana, Tricog, Vifor; Speaker Fees: Novartis, Boehringer Ingelheim-Lilly, Astra Zeneca, Impulse Dynamics; Lesley H Curtis: Fees Boehringer Ingleheim, NIH, and Regeneron Pharmaceuticals Mitchell Elkind: Grants: Roche; Lecture Fees: Atria Academy of Science and Medicine; Travel Support: American Heart Association; Adrian F. Hernandez: Consulting fees Amgen, AstraZeneca, Bayer, Boehringer Ingelheim, Boston Scientific, CSL Behring, Cytokinetics, Eli Lilly, Intellia Therapeutics, Merck, Novartis, Novo Nordisk, Prolaio; Grants/Contracts: American Regent, AstraZeneca, Bayer, Boehringer Ingelheim, Intellia Therapeutics, Merck, Novartis, Novo Nordisk, Verily; Christoph Hornik: None declared; Gary H Lyman: Consulting Fees: Sandoz, Astra Zeneca, Beyond Spring, G1 Therapeutics, Merck, Partners Healthcare, ER Squibb, Samsung, Fresenius Kabi; Pooja Khatri: grants from Cerenovus; serving on the scientific advisory boards of Lumosa; Shionogi, Bayer, and Basking Biosciences; andreceiving online publication royalties from UpToDate; Michael Mbagwu: Stocks in Verana Health as employee Masahiro Murakami: employed by Eli Lilly; Gwen Nichols: None declared; Lothar Roessig: employed by Bayer; Anne Quinn Young: None declared; Richard L. Schilsky Consulting Fees: Cellworks, EQRx, Zephyr AI, Clarified Precision Medicine, Illumina, Member, DSMB, Baseline Study sponsored by Verily Chairman, Scientific Advisory Board, Ontario Institute for Cancer Research Member, Strategic External Advisory Committee for Canadian Cancer Trials Group Chairman, Board of Directors, Reagan-Udall Foundation for the FDA, Member, Board of Directors, Friends of Cancer Research, Member, Board of Directors, Leap Therapeutics; Neha Pagidipati: Research support from Alnylam, Amgen, Boehringer Ingelheim, Eggland's Best, Eli Lilly, Novartis, Novo Nordisk, Verily Life Sciences; Consultation/Advisory Panels for Bayer, Boehringer Ingelheim, CRISPR Therapeutics, Eli Lilly, Esperion, AstraZeneca, Merck, Novartis, and Novo Nordisk; Executive Committee member for trials sponsored by Novo Nordisk and by Amgen; DSMB for trials sponsored by J+J and Novartis; Medical advisory board for Miga Health., (Copyright © 2024 Elsevier Inc. All rights reserved.)
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- 2024
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8. Advancing Newborn Screening Long-Term Follow-Up: Integration of Epic -Based Registries, Dashboards, and Efficient Workflows.
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Raboin K, Ellis D, Nichols G, Hughes M, Brimacombe M, and Rubin K
- Abstract
The Connecticut Newborn Screening (NBS) Network, in partnership with the Connecticut Department of Public Health, strategically utilized the Epic electronic health record (EHR) system to establish registries for tracking long-term follow-up (LTFU) of NBS patients. After launching the LTFU registry in 2019, the Network obtained funding from the Health Resources and Services Administration to address the slow adoption by specialty care teams. An LTFU model was implemented in the three highest-volume specialty care teams at Connecticut Children's, involving an early childhood cohort diagnosed with an NBS-identified disorder since the formation of the Network in March 2019. This cohort grew from 87 to 115 over the two-year project. Methods included optimizing registries, capturing external data from Health Information Exchanges, incorporating evidence-based guidelines, and conducting qualitative and quantitative evaluations. The early childhood cohort demonstrated significant and sustainable improvements in the percentage of visits up-to-date (%UTD) compared to the non-intervention legacy cohort of patients diagnosed with an NBS disorder before the formation of the Network. Positive trends in the early childhood cohort, including %UTD for visits and condition-specific performance metrics, were observed. The qualitative evaluation highlighted the achievability of practice behavior changes for specialty care teams through responsive support from the nurse analyst. The Network's model serves as a use case for applying and achieving the adoption of population health tools within an EHR system to track care delivery and quickly fill identified care gaps, with the aim of improving long-term health for NBS patients.
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- 2024
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9. A mathematical, classical stratification modeling approach to disentangling the impact of weather on infectious diseases: A case study using spatio-temporally disaggregated Campylobacter surveillance data for England and Wales.
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Lo Iacono G, Cook AJC, Derks G, Fleming LE, French N, Gillingham EL, Gonzalez Villeta LC, Heaviside C, La Ragione RM, Leonardi G, Sarran CE, Vardoulakis S, Senyah F, van Vliet AHM, and Nichols G
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- Humans, Wales epidemiology, Weather, Seasons, England epidemiology, Incidence, Campylobacter, Campylobacter Infections epidemiology, Campylobacter Infections microbiology, Gastroenteritis, Communicable Diseases epidemiology
- Abstract
Disentangling the impact of the weather on transmission of infectious diseases is crucial for health protection, preparedness and prevention. Because weather factors are co-incidental and partly correlated, we have used geography to separate out the impact of individual weather parameters on other seasonal variables using campylobacteriosis as a case study. Campylobacter infections are found worldwide and are the most common bacterial food-borne disease in developed countries, where they exhibit consistent but country specific seasonality. We developed a novel conditional incidence method, based on classical stratification, exploiting the long term, high-resolution, linkage of approximately one-million campylobacteriosis cases over 20 years in England and Wales with local meteorological datasets from diagnostic laboratory locations. The predicted incidence of campylobacteriosis increased by 1 case per million people for every 5° (Celsius) increase in temperature within the range of 8°-15°. Limited association was observed outside that range. There were strong associations with day-length. Cases tended to increase with relative humidity in the region of 75-80%, while the associations with rainfall and wind-speed were weaker. The approach is able to examine multiple factors and model how complex trends arise, e.g. the consistent steep increase in campylobacteriosis in England and Wales in May-June and its spatial variability. This transparent and straightforward approach leads to accurate predictions without relying on regression models and/or postulating specific parameterisations. A key output of the analysis is a thoroughly phenomenological description of the incidence of the disease conditional on specific local weather factors. The study can be crucially important to infer the elusive mechanism of transmission of campylobacteriosis; for instance, by simulating the conditional incidence for a postulated mechanism and compare it with the phenomenological patterns as benchmark. The findings challenge the assumption, commonly made in statistical models, that the transformed mean rate of infection for diseases like campylobacteriosis is a mere additive and combination of the environmental variables., Competing Interests: The authors have declared that no competing interests exist., (Copyright: © 2024 Lo Iacono et al. This is an open access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.)
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- 2024
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10. The PedAL/EuPAL Project: A Global Initiative to Address the Unmet Medical Needs of Pediatric Patients with Relapsed or Refractory Acute Myeloid Leukemia.
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Ceolin V, Ishimaru S, Karol SE, Bautista F, Goemans BF, Gueguen G, Willemse M, Di Laurenzio L, Lukin J, van Tinteren H, Locatelli F, Petit A, Tomizawa D, Norton A, Kaspers G, Reinhardt D, Tasian SK, Nichols G, Kolb EA, Zwaan CM, and Cooper TM
- Abstract
The prognosis of children with acute myeloid leukemia (AML) has improved incrementally over the last few decades. However, at relapse, overall survival (OS) is approximately 40-50% and is even lower for patients with chemo-refractory disease. Effective and less toxic therapies are urgently needed for these children. The Pediatric Acute Leukemia (PedAL) program is a strategic global initiative that aims to overcome the obstacles in treating children with relapsed/refractory acute leukemia and is supported by the Leukemia and Lymphoma Society in collaboration with the Children's Oncology Group, the Innovative Therapies for Children with Cancer consortium, and the European Pediatric Acute Leukemia (EuPAL) foundation, amongst others. In Europe, the study is set up as a complex clinical trial with a stratification approach to allocate patients to sub-trials of targeted inhibitors at relapse and employing harmonized response and safety definitions across sub-trials. The PedAL/EuPAL international collaboration aims to determine new standards of care for AML in a first and second relapse, using biology-based selection markers for treatment stratification, and deliver essential data to move drugs to front-line pediatric AML studies. An overview of potential treatment targets in pediatric AML, focused on drugs that are planned to be included in the PedAL/EuPAL project, is provided in this manuscript.
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- 2023
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11. Local Infiltration of Tranexamic Acid in Breast Reduction for Symptomatic Macromastia.
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Nichols G, Andrade E, Gregoski M, Herrera FA, and Armstrong MB
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- Humans, Adolescent, Young Adult, Adult, Blood Loss, Surgical prevention & control, Tranexamic Acid therapeutic use, Antifibrinolytic Agents therapeutic use, Mammaplasty
- Abstract
Background: With a surge of tranexamic acid (TXA) use in the plastic surgery community and a constant demand for breast reduction for symptomatic macromastia, questions about the benefits and risks emerge. The aims of this study are to evaluate and compare outcomes of patients undergoing breast reduction while receiving local TXA as opposed to standard procedure without TXA and to assess intraoperative bleeding and operative time., Methods: A retrospective review of breast reductions at a single institution from June 2020 to December 2021 was performed. The breast was infiltrated with tumescent solution at the time of surgery, with or without TXA. The population was divided into 2 groups: the TXA receiving group and tumescent only group. Demographics, intraoperative bleeding, operative time, complications, and drain duration were compared between groups. T test and χ 2 test analyses were performed on IBM SPSS.TM., Results: A total of 81 patients and 162 breasts were included. Mean age among patients was 30 ± 13.44 years. Mean SN-N distance was 32.80 ± 3.62 cm. Average resected breast specimen weight was 903.21 ± 336.50 g. Mean operating room time was 159 minutes. Intraoperative blood loss and operative time were not statistically different between groups ( P = 0.583 and P = 0.549, respectively). T-junction dehiscence was lower in the TXA group ( P = 0.016). Incidence of suture granulomas was lower in the TXA group ( P = 0.05). Drain duration was statistically significantly higher in the TXA group ( P = 0.033)., Conclusions: No decreases in intraoperative blood loss, operative time, or hematoma were seen after local administration of TXA during breast reduction. The rate of overall complications was not increased by using TXA, and incidence of T-junction dehiscence was lower in the TXA group lending to TXA's relatively safe profile. More research is necessary to further elucidate the TXA-related benefits in standard breast reductions., Competing Interests: Conflicts of interest and sources of funding: none declared., (Copyright © 2023 Wolters Kluwer Health, Inc. All rights reserved.)
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- 2023
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12. Gene Therapy with p14/tBID Induces Selective and Synergistic Apoptosis in Mutant Ras and Mutant p53 Cancer Cells In Vitro and In Vivo.
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Fine RL, Mao Y, Garcia-Carracedo D, Su GH, Qiu W, Hochfeld U, Nichols G, Li YL, Dinnen RD, Raffo A, and Brandt-Rauf PW
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Any gene therapy for cancer will be predicated upon its selectivity against cancer cells and non-toxicity to normal cells. Therefore, safeguards are needed to prevent its activation in normal cells. We designed a minimal p14
ARF promoter with upstream Ap1 and E2F enhancer elements and a downstream MDR1 inhibitory element, TATA box, and a transcription initiation site (hereafter p14ARF min). The modified p14ARF min promoter was linked to bicistronic P14 and truncated BID ( tBID ) genes, which led to synergistic apoptosis via the intrinsic and extrinsic pathways of apoptosis when expressed. The promoter was designed to be preferentially activated by mutant Ras and completely inhibited by wild-type p53 so that only cells with both mutant Ras and mutant p53 would activate the construct. In comparison to most p53 gene therapies, this construct has selective advantages: (1) p53-based gene therapies with a constitutive CMV promoter cannot differentiate between normal cells and cancer cells, and can be toxic to normal cells; (2) our construct does not induce p21WAF/CIPI in contrast to other p53-based gene therapies, which can induce cell cycle arrest leading to increased chemotherapy resistance; (3) the modified construct (p14ARF min-p14-tBID) demonstrates bidirectional control of its promoter, which is completely repressed by wild-type p53 and activated only in cells with both RAS and P53 mutations; and (4) a novel combination of genes (p14 and tBID) can synergistically induce potent intrinsic and extrinsic apoptosis in cancer cells.- Published
- 2023
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13. Mechanisms of cholera transmission via environment in India and Bangladesh: state of the science review.
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Shackleton D, Memon FA, Nichols G, Phalkey R, and Chen AS
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- Bangladesh epidemiology, India epidemiology, Humans, Environment, Climate Change, Cholera transmission, Cholera epidemiology
- Abstract
Objectives: Cholera has a long history in India and Bangladesh, the region where six out of the past seven global pandemics have been seeded. The changing climate and growing population have led to global cholera cases remaining high despite a consistent improvement in the access to clean water and sanitation. We aim to provide a holistic overview of variables influencing environmental cholera transmission within the context of India and Bangladesh, with a focus on the mechanisms by which they act., Content: We identified 56 relevant texts (Bangladesh n = 40, India n = 7, Other n = 5). The results of the review found that cholera transmission is associated with several socio-economic and environmental factors, each associated variable is suggested to have at least one mediating mechanism. Increases in ambient temperature and coastal sea surface temperature support cholera transmission via increases in plankton and a preference of Vibrio cholerae for warmer waters. Increased rainfall can potentially support or reduce transmission via several mechanisms., Summary and Outlook: Common issues in the literature are co-variance of seasonal factors, limited access to high quality cholera data, high research bias towards research in Dhaka and Matlab (Bangladesh). A specific and detailed understanding of the relationship between SST and cholera incidence remains unclear., (© 2023 the author(s), published by De Gruyter, Berlin/Boston.)
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- 2023
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14. C-Terminal p53 Palindromic Tetrapeptide Restores Full Apoptotic Function to Mutant p53 Cancer Cells In Vitro and In Vivo.
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Fine RL, Mao Y, Dinnen R, Rosal RV, Raffo A, Hochfeld U, Senatus P, Bruce JN, Nichols G, Wang H, Li Y, and Brandt-Rauf PW
- Abstract
We previously demonstrated that a synthetic monomer peptide derived from the C-terminus of p53 (aa 361−382) induced preferential apoptosis in mutant p53 malignant cells, but not normal cells. The major problem with the peptide was its short half-life (half-life < 10 min.) due to a random coil topology found in 3D proton NMR spectroscopy studies. To induce secondary/tertiary structures to produce more stability, we developed a peptide modelled after the tetrameric structure of p53 essential for activation of target genes. Starting with the above monomer peptide (aa 361−382), we added the nuclear localization sequence of p53 (aa 353−360) and the end of the C-terminal sequence (aa 383−393), resulting in a monomer spanning aa 353−393. Four monomers were linked by glycine to maximize flexibility and in a palindromic order that mimics p53 tetramer formation with four orthogonal alpha helices, which is required for p53 transactivation of target genes. This is now known as the 4 repeat-palindromic-p53 peptide or (4R-Pal-p53p). We explored two methods for testing the activity of the palindromic tetrapeptide: (1) exogenous peptide with a truncated antennapedia carrier (Ant) and (2) a doxycycline (Dox) inducer for endogenous expression. The exogenous peptide, 4R-Pal-p53p-Ant, contained a His tag at the N-terminal and a truncated 17aa Ant at the C-terminal. Exposure of human breast cancer MB-468 cells and human skin squamous cell cancer cells (both with mutant p53, 273 Arg->His) with purified peptide at 7 µM and 15 µM produced 52% and 75%, cell death, respectively. Comparatively, the monomeric p53 C-terminal peptide-Ant (aa 361−382, termed p53p-Ant), at 15 µM and 30 µM induced 15% and 24% cell death, respectively. Compared to the p53p-Ant, the exogenous 4R-pal-p53p-Ant was over five-fold more potent for inducing apoptosis at an equimolar concentration (15 µM). Endogenous 4R-Pal-p53p expression (without Ant), induced by Dox, resulted in 43% cell death in an engineered MB468 breast cancer stable cell line, while endogenous p53 C-terminal monomeric peptide expression produced no cell death due to rapid peptide degradation. The mechanism of apoptosis from 4R-Pal-p53p involved the extrinsic and intrinsic pathways (FAS, caspase-8, Bax, PUMA) for apoptosis, as well as increasing reactive oxygen species (ROS). All three death pathways were induced from transcriptional/translational activation of pro-apoptotic genes. Additionally, mRNA of p53 target genes (Bax and Fas) increased 14-fold and 18-fold, respectively, implying that the 4R-Pal-p53p restored full apoptotic potential to mutant p53. Monomeric p53p only increased Fas expression without a transcriptional or translational increase in Fas, and other genes and human marrow stem cell studies revealed no toxicity to normal stem cells for granulocytes, erythrocytes, monocytes, and macrophages (CFU-GEMM). Additionally, the peptide specifically targeted pre-malignant and malignant cells with mutant p53 and was not toxic to normal cells with basal levels of WT p53.
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- 2023
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15. Mapping the evidence of the effects of environmental factors on the prevalence of antibiotic resistance in the non-built environment: Protocol for a systematic evidence map.
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Gardner B, Betson M, Cabal Rosel A, Caniça M, Chambers MA, Contadini FM, Gonzalez Villeta LC, Hassan MM, La Ragione RM, de Menezes A, Messina D, Nichols G, Olivença DV, Phalkey R, Prada JM, Ruppitsch W, Santorelli LA, Selemetas N, Tharmakulasingam M, M van Vliet AH, Woegerbauer M, Deza-Cruz I, and Lo Iacono G
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- Animals, Humans, Prevalence, Drug Resistance, Microbial genetics, Bias, Bacteria genetics, Anti-Bacterial Agents pharmacology
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Background: Human, animal, and environmental health are increasingly threatened by the emergence and spread of antibiotic resistance. Inappropriate use of antibiotic treatments commonly contributes to this threat, but it is also becoming apparent that multiple, interconnected environmental factors can play a significant role. Thus, a One Health approach is required for a comprehensive understanding of the environmental dimensions of antibiotic resistance and inform science-based decisions and actions. The broad and multidisciplinary nature of the problem poses several open questions drawing upon a wide heterogeneous range of studies., Objective: This study seeks to collect and catalogue the evidence of the potential effects of environmental factors on the abundance or detection of antibiotic resistance determinants in the outdoor environment, i.e., antibiotic resistant bacteria and mobile genetic elements carrying antibiotic resistance genes, and the effect on those caused by local environmental conditions of either natural or anthropogenic origin., Methods: Here, we describe the protocol for a systematic evidence map to address this, which will be performed in adherence to best practice guidelines. We will search the literature from 1990 to present, using the following electronic databases: MEDLINE, Embase, and the Web of Science Core Collection as well as the grey literature. We shall include full-text, scientific articles published in English. Reviewers will work in pairs to screen title, abstract and keywords first and then full-text documents. Data extraction will adhere to a code book purposely designed. Risk of bias assessment will not be conducted as part of this SEM. We will combine tables, graphs, and other suitable visualisation techniques to compile a database i) of studies investigating the factors associated with the prevalence of antibiotic resistance in the environment and ii) map the distribution, network, cross-disciplinarity, impact and trends in the literature., Competing Interests: Declaration of Competing Interest The authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper., (Copyright © 2022 The Authors. Published by Elsevier Ltd.. All rights reserved.)
- Published
- 2023
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16. Comparison of two behavioral tests for tinnitus assessment in mice.
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Fabrizio-Stover EM, Nichols G, Corcoran J, Jain A, Burghard AL, Lee CM, and Oliver DL
- Abstract
Animal research focused on chronic tinnitus associated with noise-induced hearing loss can be expensive and time-consuming as a result of the behavioral training required. Although there exist a number of behavioral tests for tinnitus; there have been few formal direct comparisons of these tests. Here, we evaluated animals in two different tinnitus assessment methods. CBA/CaJ mice were trained in an operant conditioning, active avoidance (AA) test, and a reflexive, gap-induced pre-pulse inhibition of acoustic startle (GPIAS) test, or both. Tinnitus was induced in awake mice by unilateral continuous sound exposure using a 2-kHz- or 1 2 octave-wide noise centered at 16 kHz and presented at 113- or 116-dB SPL. Tinnitus was assessed 8 weeks after sound overexposure. Most mice had evidence of tinnitus behavior in at least one of the two behaviors. Of the mice evaluated in AA, over half (55%) had tinnitus positive behavior. In GPIAS, fewer animals (13%) were positive than were identified using the AA test. Few mice were positive in both tests (10%), and only one was positive for tinnitus behavior at the same spectral frequency in both tests. When the association between tinnitus behavior and spontaneous activity recorded in the inferior colliculus was compared, animals with tinnitus behavior in AA exhibited increased spontaneous activity, while those positive in GPIAS did not. Thus, it appears that operant conditioning tests, like AA, maybe more reliable and accurate tests for tinnitus than reflexive tests., Competing Interests: The authors declare that the research was conducted in the absence of any commercial or financial relationships that could be construed as a potential conflict of interest., (Copyright © 2022 Fabrizio-Stover, Nichols, Corcoran, Jain, Burghard, Lee and Oliver.)
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- 2022
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17. Effects of olfactory stimulus on group performance and individual stress responses in university students.
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McDermott K, Nash P, Boyington A, Planell LP, Joe S, Streifel K, Nichols G, Lucas B, Spence A, and Campisi J
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- Group Processes, Humans, Plant Oils, Students, Universities, Lavandula, Oils, Volatile pharmacology
- Abstract
Group work is essential in professional settings to encourage effective communication and optimize outcomes. Stress can reduce teamwork effectiveness and aromatherapy might be able to reduce feelings of stress/anxiety in individuals. However, it is unclear if aromatherapy impacts stress levels or performance during group activities. Therefore, we examined if essential oil exposure impacted stress responses and performance of individuals and groups during a team-based task involving a challenging medical decision. Subjects (n = 36) were part of a 3-person group (12 groups total) that completed a timed moral reasoning dilemma wearing a mask that contained a purported stimulatory essential oil (peppermint), a purported relaxing essential oil (lavender) or masks that contained neither odor (3 groups/mask type). Heart rate (HR) responses were recorded continuously before, during and after the task. The time to complete the task, decision making during the task, and subject's perceptions of the task were also recorded. Control subjects and subjects exposed to peppermint demonstrated a significant stress-induced increase in HR during the group task. However, subjects exposed to lavender demonstrated a significantly attenuated HR. Subjects in the control group who perceived high stress levels during the task demonstrated further elevations in HR than those not reporting stress, however, this pattern was not observed in subjects exposed to either essential oil. Groups did not differ in the time required to complete the task although only the groups exposed to lavender used decision making consistent with medical practice. Therefore, exposure to lavender was associated with differential physiological responses during a stressful group task, potentially due to olfactory system stimulation of anxiolytic and/or trust promoting central nervous system pathways. Aromatherapy might be a useful tool in group settings to mitigate the impact of stress and improve group performance., (Copyright © 2022. Published by Elsevier Inc.)
- Published
- 2022
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18. Color Doppler Ultrasound versus Computed Tomography Angiography for Preoperative Anterolateral Thigh Flap Perforator Imaging: A Systematic Review and Meta-Analysis.
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Moore R, Mullner D, Nichols G, Scomacao I, and Herrera F
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- Computed Tomography Angiography, Humans, Preoperative Care methods, Thigh diagnostic imaging, Thigh surgery, Ultrasonography, Doppler, Color methods, Perforator Flap surgery, Plastic Surgery Procedures methods
- Abstract
Background: The anterolateral thigh (ALT) perforator flap is a commonly used flap with a predictable, though often variable, perforator anatomy. Preoperative imaging with color Doppler ultrasound (CDU) and computed tomography angiography (CTA) of ALT flap perforators can be a useful tool for flap planning. This study provides a complete review and analysis of the relevant preoperative ALT imaging literature., Methods: Studies related to preoperative CDU and CTA imaging were reviewed, and information related to imaging method, sensitivity, false-positive rates, and perforator course identification (musculocutaneous vs. septocutaneous) were analyzed., Results: A total of 23 studies related to preoperative ALT flap CDU and CTA imaging were included for review and analysis. Intraoperative perforator identification was compared with those found preoperatively using CDU ( n = 672) and CTA ( n = 531). Perforator identification sensitivity for CDU was 95.3% (95% CI: 90.9-97.6%) compared with the CTA sensitivity of 90.4% (95% confidence interval [CI]: 74.4-96.9%). The false-positive rate for CDU was 2.8% (95% CI: 1.1-4.5%) compared with 2.4% (95% CI: 0.7-4.1%) for CTA. Accuracy of perforator course identification was 95.5% (95% CI: 93.6-99.2%) for CDU and 96.9% (95% CI: 92.7-100.1%) for CTA., Conclusion: CDU provides the reconstructive surgeon with greater preoperative perforator imaging sensitivity compared with CTA; however, false-positive rates are marginally higher with preoperative CDU. Preoperative imaging for ALT flap design is an effective tool, and the reconstructive surgeon should consider the data presented here when selecting a flap imaging modality., Competing Interests: None declared., (Thieme. All rights reserved.)
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- 2022
- Full Text
- View/download PDF
19. A Comparison of Applicant and Resident Physician Demographics Among Surgical Subspecialties From 2009 to 2019: Trends in Gender and Underrepresented Minorities in Medicine.
- Author
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Jain A, Nichols G, Tarabishy S, Scomacao I, and Herrera FA
- Subjects
- Demography, Education, Medical, Graduate, Female, Humans, Minority Groups, United States, Internship and Residency, Physicians
- Abstract
Background: The purposes of this study were to compare applicant statistics to resident physician demographics among several surgical subspecialties (SSSs), to identify trends of gender and underrepresented minorities in medicine (UIM), and to evaluate current diversity among these specialties., Methods: Graduate medical education reports from 2009 to 2019 were queried to determine trends among programs. Further identification of gender and UIM statistics was obtained in 4 several SSSs: integrated plastic surgery, orthopedic surgery (OS), otolaryngology surgery (ENT), and neurosurgery (NS). These were compared with Association of American Medical Colleges data of residency applicants for the respective years., Results: Significant differences were seen among gender and UIM(s) of the applicant pool when compared with resident data. All specialties had significantly fewer American Indian and African American residents compared with applicants. Significant differences between applicants and residents were also found among Hispanic, Native Hawaiian, and female demographics. All SSSs had a significant positive trend for the percentage of female residents. Significant differences between specialties were identified among African American, Hispanic, and female residents. Orthopedic surgery and NS had significantly higher percentage of African American residents compared with ENT and integrated plastic surgery. Neurosurgery had significantly higher percentage of Hispanic residents compared with OS and ENT. Integrated plastic surgery and ENT had significantly higher percentage of female residents compared with OS and NS., Conclusions: There has been significant increase in number of residency programs and resident positions since 2009. However, increase in female residents and UIM(s) among SSSs has not matched the pace of growth., Competing Interests: Conflicts of interest and sources of funding: none declared., (Copyright © 2021 Wolters Kluwer Health, Inc. All rights reserved.)
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- 2022
- Full Text
- View/download PDF
20. 50 Years of the Radiation Exposure Information and Reporting System.
- Author
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Hagemeyer D, Nichols G, Mumma MT, Boice JD, and Brock TA
- Subjects
- Humans, Nuclear Power Plants, Radiation Dosage, Radiometry, Occupational Exposure analysis, Radiation Exposure adverse effects, Radiation Monitoring
- Abstract
Purpose: As the Radiation Exposure Information and Reporting System (REIRS) celebrates 50 years of existence, this is an appropriate time to reflect on the innovative and novel system and how it has shaped the study of occupational radiation exposure. It is also fitting to appreciate the vision and initiative of the individuals who recognized the future value of the collection and analysis of this information to better inform regulations, policies, and epidemiologic studies, and thus contribute to the protection of workers and the public from the adverse health effects of radiation exposure., Conclusions: REIRS has evolved and expanded over its 50-year history and has played a central role in providing the radiation exposure monitoring records for the Million Person Study for individuals monitored as NRC licensees and at DOE facilities. REIRS has played two major functions in epidemiologic studies. First, it has provided dosimetry information on individual workers in occupational studies to ensure nearly complete ascertainment of career doses. Second, REIRS was used as the primary data source for large cohorts within the Million Person Study: nuclear power plant workers ( n ∼140,000) and industrial radiographers ( n ∼130,000). The legacy that REIRS continues to uphold is a model for creating and maintaining a successful tool throughout decades of political, technological, and demographic change.
- Published
- 2022
- Full Text
- View/download PDF
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