556 results on '"Oyola P"'
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2. Successful Weight Loss in Adolescents with Overweight or Obesity Using a Swallowable Intragastric Balloon and Nutritional Oversight
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Oyola, Christopher, Berry, Marcos, Salazar, María Alejandra Paez, De Abreu, Diolanda, Formiga, Andrea, Escalona, Alex, Rodriguez, Marcos, and Ienca, Roberta
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- 2024
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3. Production of Levoglucosan and Levoglucosenone from Cellulose Using Brønsted Acid Catalysts in Polar Aprotic Solvents
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González-Rosario, Alexa M., Oyola-Rivera, Oscar, and Cardona-Martínez, Nelson
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- 2024
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4. Genome characterization of Rift Valley fever virus isolated from cattle, goats and sheep during interepidemic periods in Kenya
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Onwongá, Amos A., Oyola, Samuel O., Juma, John, Konongoi, Samson, Nyamota, Richard, Mwangi, Reuben, Muli, Collins, Dobi, Paul, Bett, Bernard B., and Ongus, Juliette R.
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- 2024
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5. Altitude-dependent agro-ecologies impact the microbiome diversity of scavenging indigenous chicken in Ethiopia
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Glendinning, Laura, Jia, Xinzheng, Kebede, Adebabay, Oyola, Samuel O., Park, Jong-Eun, Park, Woncheoul, Assiri, Abdulwahab, Holm, Jacob Bak, Kristiansen, Karsten, Han, Jianlin, and Hanotte, Olivier
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- 2024
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6. The role of microRNAs in understanding sex-based differences in Alzheimer’s disease
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Llera-Oyola, Jaime, Carceller, Héctor, Andreu, Zoraida, Hidalgo, Marta R., Soler-Sáez, Irene, Gordillo, Fernando, Gómez-Cabañes, Borja, Roson, Beatriz, de la Iglesia-Vayá, Maria, Mancuso, Roberta, Guerini, Franca R., Mizokami, Akiko, and García-García, Francisco
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- 2024
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7. Effect of aging on the human myometrium at single-cell resolution
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Punzon-Jimenez, Paula, Machado-Lopez, Alba, Perez-Moraga, Raul, Llera-Oyola, Jaime, Grases, Daniela, Galvez-Viedma, Marta, Sibai, Mustafa, Satorres-Perez, Elena, Lopez-Agullo, Susana, Badenes, Rafael, Ferrer-Gomez, Carolina, Porta-Pardo, Eduard, Roson, Beatriz, Simon, Carlos, and Mas, Aymara
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- 2024
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8. Saharan dust impact on radiative heating rate errors inherent in reanalysis data in the African easterly wave development region
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R. W. Burgess and M. I. Oyola-Merced
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Physics ,QC1-999 ,Chemistry ,QD1-999 - Abstract
This study thoroughly examines the impact of aerosols on atmospheric heating rates over the North Atlantic Ocean, with a specific focus on developing African easterly waves (AEWs). The analysis leverages data from the National Aeronautics and Space Administration (NASA) DC-8 aircraft, dropsonde profiles, lidar observations, and satellite-based precipitation data obtained during NASA's Convective Processes Experiment – Cabo Verde (CPEX-CV) field campaign, as well as the Modern-Era Retrospective Analysis for Research and Applications version 2 (MERRA-2) and Copernicus Atmosphere Monitoring Service (CAMS) reanalyses. Using a four-stream radiative transfer model, the research specifically focuses on days characterized by Saharan dust coinciding with a developing AEW and contrasts its findings with a notable dust-only event in June 2020. The findings reveal notable differences in shortwave (SW) heating rates of over 1.5 K d−1 between reanalysis and observations, underlining the persistent challenges in accurately representing aerosol effects in the atmosphere, even after assimilating observational data. These discrepancies were present on days with both background and high dust concentrations, emphasizing the challenges in accurately representing aerosol radiative effects in models and highlighting the urgent need for improved aerosol representation in reanalysis datasets. Differences in heating rates were analyzed in a case study of two developing AEWs, one leading to a Category 4 hurricane (Fiona) and another leading to a short-lived tropical storm (TS; Hermine).
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- 2024
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9. A randomized intervention to gauge preferred tax rates and progressivity
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Campos-Vazquez, Raymundo M. and Restrepo-Oyola, Samuel D.
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- 2024
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10. Genome characterization of Rift Valley fever virus isolated from cattle, goats and sheep during interepidemic periods in Kenya
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Amos A. Onwongá, Samuel O. Oyola, John Juma, Samson Konongoi, Richard Nyamota, Reuben Mwangi, Collins Muli, Paul Dobi, Bernard B. Bett, and Juliette R. Ongus
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Rift Valley fever virus ,Genome ,Reassortment ,Epidemics ,Virus and Segment ,Veterinary medicine ,SF600-1100 - Abstract
Abstract Rift Valley fever virus (RVFV) is a mosquito-borne RNA virus of the Phlebovirus genus in the phenuviridae family. Its genome is trisegmented with small (S), medium (M) and large (L) fragments. In nature, the virus exists as a single serotype that is responsible for outbreaks of Rift Valley fever (RVF), a zoonotic disease that often occurs in Africa and the Middle East. RVFV genomes are thought to undergo both recombination and reassortment and investigations of these events is important for monitoring the emergence of virulent strains and understanding the evolutionary characteristics of this virus. The aim of this study was to characterize the genomes of RVFV isolates from cattle, sheep, and goats collected during an interepidemic period in Kenya between June 2016 and November 2021. A total of 691 serum samples from cattle (n = 144), goats (n = 185) and sheep (n = 362) were analysed at the Central Veterinary Laboratories. The competitive IgM-capture ELISA, was used to screen the samples; 205 samples (29.67%) tested positive for RVFV. Of the 205 positive samples, 42 (20.5%) were from cattle, 57 (27.8%) from goats, and 106 (51.7%) from sheep. All the IgM-positive samples were further analyzed by qPCR, and 24 (11.71%) tested positive with Ct values ranging from 14.788 to 38.286. Two samples, 201808HABDVS from sheep and 201810CML3DVS from cattle, had Ct values of less than 20.0 and yielded whole genome sequences with 96.8 and 96.4 coverage, respectively. There was no statistically significant evidence of recombination in any of the three segments and also phylogenetic analysis showed no evidence of reassortment in the two isolated RVFV segments when compared with other isolates of different lineages from previous outbreaks whose genomes are deposited in the GenBank. No evidence of reassortment leaves room for other factors to be the most probable contributors of change in virulence, pathogenicity and emergence of highly virulent strains of the RVFV.
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- 2024
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11. Altitude-dependent agro-ecologies impact the microbiome diversity of scavenging indigenous chicken in Ethiopia
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Laura Glendinning, Xinzheng Jia, Adebabay Kebede, Samuel O. Oyola, Jong-Eun Park, Woncheoul Park, Abdulwahab Assiri, Jacob Bak Holm, Karsten Kristiansen, Jianlin Han, and Olivier Hanotte
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Chicken ,Microbiota ,Metagenomics ,Ethiopia ,Poultry ,Agro-ecology ,Microbial ecology ,QR100-130 - Abstract
Abstract Background Scavenging indigenous village chickens play a vital role in sub-Saharan Africa, sustaining the livelihood of millions of farmers. These chickens are exposed to vastly different environments and feeds compared to commercial chickens. In this study, we analysed the caecal microbiota of 243 Ethiopian village chickens living in different altitude-dependent agro-ecologies. Results Differences in bacterial diversity were significantly correlated with differences in specific climate factors, topsoil characteristics, and supplemental diets provided by farmers. Microbiota clustered into three enterotypes, with one particularly enriched at high altitudes. We assembled 9977 taxonomically and functionally diverse metagenome-assembled genomes. The vast majority of these were not found in a dataset of previously published chicken microbes or in the Genome Taxonomy Database. Conclusions The wide functional and taxonomic diversity of these microbes highlights their importance in the local adaptation of indigenous poultry, and the significant impacts of environmental factors on the microbiota argue for further discoveries in other agro-ecologies. Video Abstract
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- 2024
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12. Toxic epidermal necrolysis-like linear IgA bullous dermatosis as a manifestation of multiple drug hypersensitivity in the setting of drug reaction with eosinophilia and systemic symptoms
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Scott Stratman, MD, MPH, Lisa Zhou, MD, Randie H. Kim, MD, Robert G. Phelps, MD, Jacob Glickman, MD, Daniela Mikhaylov, MD, Jianni Wu, MD, Nour El-Kashlan, MD, Ryan Rivera-Oyola, MD, Jonas A. Adalsteinsson, MD, PhD, Melissa A. Levoska, MD, and Nicholas Gulati, MD, PhD
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corticosteroids ,DRESS ,drug-induced linear IgA disease ,drug reaction ,drug reaction with eosinophilia and systemic symptoms ,LABD ,Dermatology ,RL1-803 - Published
- 2024
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13. Liquidez y rentabilidad de las Cajas Municipales de Ahorro y Crédito del Perú: Periodo 2020 – 2022
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Teresa Ruth Senmache Yrigoin, Viviana Inés Vellón Flores, Abrahan Cesar Neri Ayala, and Naylamp Paola Ramos Oyola
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liquidez ,rentabilidad ,ratios ,sector financiero peruano ,cajas municipales de ahorro y crédito ,Political science (General) ,JA1-92 ,Social sciences (General) ,H1-99 - Abstract
Existen dos indicadores financieros que son pilares fundamentales para la sostenibilidad y el cumplimiento de los objetivos de las Cajas Municipales de Ahorro y Crédito del Perú: La liquidez y la rentabilidad. En este sentido, esta investigación buscó determinar de qué manera la liquidez influye en la rentabilidad de estas instituciones, durante los periodos comprendidos entre 2020 al 2022. Se elaboró una investigación bajo un procedimiento de carácter cuantitativo, no experimental longitudinal y de alcance correlacional-causal, la cual contó con una población y muestra censal comprendida por 11 Cajas Municipales de Ahorro y Crédito autorizadas, reguladas y supervisadas por la Superintendencia de Banca, Seguros y Administradoras Privadas de Fondos de Pensiones. Asimismo, la información fue agrupada y registrada por medio del análisis documental, diseñando como instrumento a una ficha de datos. Con un valor de -0,627 y una significancia inferior al 5 %, se contrastó que la liquidez influyó de forma negativa y significativa en la rentabilidad de las Cajas Municipales de Ahorro y Crédito, durante los años 2020 al 2022. Finalmente, se infiere que los comportamientos de liquidez y rentabilidad de estas instituciones evidenciaron que una mayor liquidez no siempre va a determinar que se alcance una mayor rentabilidad.
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- 2024
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14. Invariants for the Smale space associated to an expanding endomorphism of a flat manifold
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Chaiser, Rachel, Coates-Welsh, Maeve, Deeley, Robin J., Farhner, Annika, Giornozi, Jamal, Huq, Robi, Lorenzo, Levi, Oyola-Cortes, Jose, Reardon, Maggie, and Stocker, Andrew M.
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Mathematics - K-Theory and Homology ,Mathematics - Operator Algebras - Abstract
We study invariants associated to Smale spaces obtained from an expanding endomorphism on a (closed connected Riemannian) flat manifold. Specifically, the relevant invariants are the $K$-theory of the associated $C^*$-algebras and Putnam's homology theory for Smale spaces. The latter is isomorphic to the groupoid homology of the groupoids used to construct the $C^*$-algebras., Comment: 21 pages
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- 2022
15. Emergency Department Preparedness to Care for Sexual Assault Survivors: A Nationwide Study
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Chalmers, Kristen, Hollender, Meredith, Spurr, Liam, Parameswaran, Ramya, Dussault, Nicole, Farnan, Jeanne, Oyola, Sonia, and Carter, Keme
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Emergency medicine ,sexual assault ,disparities ,trauma-informed care ,forensic medical examinations ,sexual assault nurse examiners - Abstract
Introduction: Emergency departments (ED) provide trauma-informed care to sexual assault (SA) survivors and connect them with comprehensive services. Through surveying SA survivor advocates, we aimed to 1) document updated trends in the quality of care and resources offered to SA survivors and 2) identify potential disparities according to geographic regions in the US, urban vs rural clinic locations, and the availability of sexual assault nurse examiners (SANE).Methods: We conducted a cross-sectional study between June-August 2021, surveying SA advocates who were dispatched from rape crisis centers to support survivors during ED care. Survey questions addressed two major themes in quality of care: staff preparedness to provide trauma-response care; and available resources. Staff preparedness to provide trauma-informed care was assessed through observations of staff behaviors. We used Wilcoxon rank-sum and Kruskal-Wallis tests to analyze differences in responses according to geographic regions and SANE presence.Results: A total of 315 advocates from 99 crisis centers completed the survey. The survey had a participation rate of 88.7% and a completion rate of 87.9%. Advocates who indicated that a higher proportion of their cases were attended by SANEs were more likely to report higher rates of trauma-informed staff behaviors. For example, the recalled rate of staff asking patients for consent at every step of the exam was significantly associated with SANE presence (P < 0.001). With respect to access to resources, 66.7% of advocates reported that hospitals often or always have evidence collection kits available; 30.6% reported that resources such as transportation and housing are often or always available, and 55.3% reported that SANEs are often or always part of the care team. The SANEs were reported to be more frequently available in the Southwest than in other US regions (P < 0.001) and in urban as opposed to rural areas (P < 0.001).Conclusion: Our study indicates that support from sexual assault nurse examiners is highly associated with trauma-informed staff behaviors and comprehensive resources. Urban-rural and regional disparities exist regarding access to SANEs, suggesting that elevating nationwide quality and equity in care of survivors of sexual assault requires increased investments in SANE training and coverage.
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- 2023
16. Le regard dans le miroir: Le Double
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Diego Oyola
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Double ,regard ,objet a ,miroir ,Psychiatry ,RC435-571 - Abstract
Cet article abordera les presentations du regard dans sa relation avec le phénomène du double. Pour ce faire, nous considérerons les écrits littéraires d’auteurs de la période romantique, qui ont fait de ce phénomène particulier le thème central de leurs récits et romans. Les conceptualisations de Freud et de Lacan nous permettront de faire une lecture clinique de ce sujet.
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- 2024
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17. Retrorectus Ventral Hernia Repair Utilizing T-line Hernia Mesh: Technical Descriptions
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Hani I. Naga, MD, Anna Malysz Oyola, DO, Joshua K. Kim, BS, William W. Hope, MD, Lee Farber, DO, and Jin S. Yoo, MD
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Surgery ,RD1-811 - Abstract
Summary:. The T-line hernia mesh is a synthetic, polypropylene mesh with mesh suture extensions designed to prevent anchor point failure by evenly distributing tension across the soft tissue. Previous studies have demonstrated the success of onlay ventral hernia repair with T-line hernia mesh, but retrorectus applications of the mesh have not yet been characterized. This technique article illustrates technical descriptions and clinical applications of the T-line hernia mesh in the retrorectus plane.
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- 2024
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18. Oropuche, nueva epidemia invisible para la salud pública
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Jonatan Oyola Carrion
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Oropuche, salud pública, epidemia, gobiernos fallidos ,Public aspects of medicine ,RA1-1270 - Abstract
Existe evidencia de que una nueva epidemia podría hacerse presente especialmente en las zona tropicales y subtropicales. Se presenta una carta al editor donde se propone abrir líneas de investigación que permitan tomar acciones acertadas frente al nuevo desafío.
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- 2024
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19. The role of microRNAs in understanding sex-based differences in Alzheimer’s disease
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Jaime Llera-Oyola, Héctor Carceller, Zoraida Andreu, Marta R. Hidalgo, Irene Soler-Sáez, Fernando Gordillo, Borja Gómez-Cabañes, Beatriz Roson, Maria de la Iglesia-Vayá, Roberta Mancuso, Franca R. Guerini, Akiko Mizokami, and Francisco García-García
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Sex-based differences ,Alzheimer’s disease ,Biomarkers ,Systematic review ,Meta-analysis ,Transcriptomics ,Medicine ,Physiology ,QP1-981 - Abstract
Abstract Background The incidence of Alzheimer's disease (AD)—the most frequent cause of dementia—is expected to increase as life expectancies rise across the globe. While sex-based differences in AD have previously been described, there remain uncertainties regarding any association between sex and disease-associated molecular mechanisms. Studying sex-specific expression profiles of regulatory factors such as microRNAs (miRNAs) could contribute to more accurate disease diagnosis and treatment. Methods A systematic review identified six studies of microRNA expression in AD patients that incorporated information regarding the biological sex of samples in the Gene Expression Omnibus repository. A differential microRNA expression analysis was performed, considering disease status and patient sex. Subsequently, results were integrated within a meta-analysis methodology, with a functional enrichment of meta-analysis results establishing an association between altered miRNA expression and relevant Gene Ontology terms. Results Meta-analyses of miRNA expression profiles in blood samples revealed the alteration of sixteen miRNAs in female and 22 miRNAs in male AD patients. We discovered nine miRNAs commonly overexpressed in both sexes, suggesting a shared miRNA dysregulation profile. Functional enrichment results based on miRNA profiles revealed sex-based differences in biological processes; most affected processes related to ubiquitination, regulation of different kinase activities, and apoptotic processes in males, but RNA splicing and translation in females. Meta-analyses of miRNA expression profiles in brain samples revealed the alteration of six miRNAs in female and four miRNAs in male AD patients. We observed a single underexpressed miRNA in female and male AD patients (hsa-miR-767-5p); however, the functional enrichment analysis for brain samples did not reveal any specifically affected biological process. Conclusions Sex-specific meta-analyses supported the detection of differentially expressed miRNAs in female and male AD patients, highlighting the relevance of sex-based information in biomedical data. Further studies on miRNA regulation in AD patients should meet the criteria for comparability and standardization of information.
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- 2024
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20. Effect of aging on the human myometrium at single-cell resolution
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Paula Punzon-Jimenez, Alba Machado-Lopez, Raul Perez-Moraga, Jaime Llera-Oyola, Daniela Grases, Marta Galvez-Viedma, Mustafa Sibai, Elena Satorres-Perez, Susana Lopez-Agullo, Rafael Badenes, Carolina Ferrer-Gomez, Eduard Porta-Pardo, Beatriz Roson, Carlos Simon, and Aymara Mas
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Science - Abstract
Abstract Age-associated myometrial dysfunction can prompt complications during pregnancy and labor, which is one of the factors contributing to the 7.8-fold increase in maternal mortality in women over 40. Using single-cell/single-nucleus RNA sequencing and spatial transcriptomics, we have constructed a cellular atlas of the aging myometrium from 186,120 cells across twenty perimenopausal and postmenopausal women. We identify 23 myometrial cell subpopulations, including contractile and venous capillary cells as well as immune-modulated fibroblasts. Myometrial aging leads to fewer contractile capillary cells, a reduced level of ion channel expression in smooth muscle cells, and impaired gene expression in endothelial, smooth muscle, fibroblast, perivascular, and immune cells. We observe altered myometrial cell-to-cell communication as an aging hallmark, which associated with the loss of 25 signaling pathways, including those related to angiogenesis, tissue repair, contractility, immunity, and nervous system regulation. These insights may contribute to a better understanding of the complications faced by older individuals during pregnancy and labor.
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- 2024
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21. A case of urticarial vasculitis associated with atezolizumab
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Jade N. Young, BS, Ryan Rivera-Oyola, MD, Dina Poplausky, BA, Yamato Suemitsu, MD, Randie H. Kim, MD, PhD, Deborah Doroshow, MD, PhD, and Nicholas Gulati, MD, PhD
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atezolizumab ,cirAE ,cutaneous immune-related adverse event ,immune checkpoint inhibitor ,immune-related adverse event ,irAE ,Dermatology ,RL1-803 - Published
- 2024
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22. Design and simulation of an Imaging Neutral Particle Analyzer for the ASDEX Upgrade tokamak
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Rueda-Rueda, J., Garcia-Munoz, M., Viezzer, E., Schneider, P. A., Garcia-Dominguez, J., Ayllon-Guerola, J., Galdon-Quiroga, J., Herrmann, A., Du, X., Van Zeeland, M. A., Oyola, P., Rodriguez-Ramos, M., and team, the ASDEX-Upgrade
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Physics - Plasma Physics - Abstract
An Imaging Neutral Particle Analyser (INPA) diagnostic has been designed for the ASDEX Upgrade (AUG) tokamak. The AUG INPA diagnostic will measure fast neutrals escaping the plasma after CX reactions. The neutrals will be ionised by a 20 nm carbon foil and deflected towards a scintillator by the local magnetic field. The use of a neutral beam injector (NBI) as active source of neutrals will provide radially resolved measurements while the use of a scintillator as active component will allow us to cover the whole plasma along the NBI line with unprecedented phase-space resolution ($ < $ 12 keV and 8 cm) and fast temporal response (up to 1 kHz with the high resolution acquisition system and above 100 kHz with the low resolution one); making it suitable to study localised fast-ions redistributions in phase-space.
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- 2022
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23. Implementation of synthetic fast-ion loss detector and imaging heavy ion beam probe diagnostics in the 3D hybrid kinetic-MHD code MEGA
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Oyola, P., Gonzalez-Martin, J., Garcia-Munoz, M., Galdon-Quiroga, J., Birkenmeier, G., Viezzer, E., Dominguez-Palacios, J., Rueda-Rueda, J., Rivero-Rodriguez, J. F., Todo, Y., and team, the ASDEX Upgrade
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Physics - Plasma Physics - Abstract
A synthetic Fast-Ion Loss Detector (FILD) and an imaging Heavy Ion Beam Probe (i-HIBP) have been implemented in the 3D hybrid kinetic-magnetohydrodynamic code MEGA. First synthetic measurements from these two diagnostics have been obtained for neutral beam injection (NBI) driven Alfv\'en Eigenmode (AE) simulated with MEGA. The synthetic fast-ion losses show a strong correlation with the AE amplitude. This correlation is observed in the phase-space, represented in coordinates toroidal canonical momentum and energy. Fast-ion losses and the energy exchange diagrams of the confined population are connected with lines of constant E' , a linear combination of E and P{\phi} . First i-HIBP synthetic signals also have been computed for the simulated AE, showing displacements in the strikeline of the order of around 1 mm, above the expected resolution in the i-HIBP scintillator of approximately 100 {\mu}m.
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- 2022
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24. Assessment of Hg pollution in stream waters and human health risk in areas impacted by mining activities in the Ecuadorian Amazon
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Mestanza-Ramón, Carlos, Jiménez-Oyola, Samantha, Montoya, Alex Vinicio Gavilanes, Vizuete, Danny Daniel Castillo, D’Orio, Giovanni, Cedeño-Laje, Juan, and Straface, Salvatore
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- 2023
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25. Sensibilidad al cambio e interpretabilidad de la versión argentina de la escala de catastrofización del dolor en sujetos con dolor lumbar crónico
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Juan Cruz Porollan, Camila Macarena Graef, Pedro Bouzat, María Guadalupe de Ilzarbe, Karen Farías, Damián Edgardo Steinberg, Sandra Salzberg, Bruno Germán Aponte, Franco Javier Fabani, and Micaela Oyola
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dolor de la región lumbar ,catastrofismo ,estudio de validación ,medición de resultados informados por el paciente ,diferencia mínima clínicamente importante ,dolor crónico ,Medicine - Abstract
Objetivo: Reportar la sensibilidad al cambio e interpretabilidad de la versión argentina de la escala de catastrofización del dolor (PCS-Arg, por sus siglas en inglés) en una muestra de sujetos con dolor lumbar crónico (DLC). Materiales y métodos: Estudio prospectivo, observacional y longitudinal. Se reclutaron sujetos con DLC derivados a la unidad de kinesiología de un hospital público de la Ciudad Autónoma de Buenos Aires. Inicialmente, se registraron los datos demográficos y las puntuaciones de la PCS-Arg, así como la intensidad del dolor, discapacidad, calidad de vida y depresión mediante cuestionarios autoadministrados. En segunda instancia, al mes o alta del tratamiento, se repitieron los cuestionarios junto con una escala global de cambio. La sensibilidad al cambio fue evaluada mediante la validez de constructo longitudinal. La interpretabilidad se calculó mediante el método basado en el ancla, y se reportaron la diferencia mínima clínicamente importante (DMCI) y el beneficio clínico sustancial (BCS). Resultados: Se incluyeron 102 sujetos. La PCS-Arg demostró una sensibilidad al cambio aceptable. La DMCI fue de 10 puntos, con un área bajo la curva (AUC) de 0,65 y un intervalo de confianza del 95 % (IC95% 0,47-0,83). El BCS fue de 17 puntos, con un AUC de 0,66 (IC95% 0,55-0,77). Conclusión: La PCS-Arg es un instrumento sensible al cambio. La capacidad discriminativa de los valores para identificar la DMCI y el BCS fue pobre. Estos resultados permitirán interpretar el impacto de diferentes terapéuticas orientadas a modificar el catastrofismo, así como potenciar futuros ensayos clínicos que incluyan sujetos con DLC.
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- 2024
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26. El Síndrome metabólico y características metabólicas en donantes de sangre
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Pedro Aro, Rodrigo Paredes, Grace Tello, Christian Lezama, Ana Oyola, Lesly Talavera, Max Acosta, and Milton Tello
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Síndrome metabólico ,donantes de sangre ,obesidad ,Medicine ,Medicine (General) ,R5-920 - Abstract
Introducción: El síndrome metabólico (SM) está asociado a un incremento del riesgo cardiovascular. Los donantes de sangre son una población aparentemente sana en donde ciertas características cardiometabolicas no son evaluadas en su selección, existiendo limitada información sobre su presencia. Objetivo: Determinar la frecuencia de síndrome metabólico y sus características metabólicas en donantes de sangre. Materiales y métodos: Estudio transversal realizado en 244 donantes de sangre entre 18 y 55 años que acudieron al Servicio de Hemoterapia y Banco de sangre del Hospital Cayetano Heredia en Lima- Perú, durante el mes de mayo del 2023. Se realizó el diagnóstico de SM según los criterios del Adult Treatment Panel III (ATP III). Se realizó un análisis bivariado entre el SM y características metabólicas con el sexo y se consideró un nivel de significancia del 5%. Resultados: El 63.9% de los donantes de sangre fueron del sexo masculino. El 43.6 % de la población presentó SM. Las características más frecuentes fueron la hipertrigliceridemia (54.5%), obesidad abdominal (51.2%) y lipoproteina de alta densidad (HDL) bajo (48.8%). El rango de edad de 40 a 49 años presentó la mayor frecuencia de SM (14.3%). La hipertrigliceridemia y presión arterial elevada estuvieron asociadas al sexo masculino (p=0.003 y p=0.019 respectivamente), mientras que el HDL bajo al sexo femenino (p
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- 2024
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27. Widening geographic range of Rift Valley fever disease clusters associated with climate change in East Africa
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Robert F Breiman, Luke Nyakarahuka, Marianne Mureithi, Eric Osoro, Silvia Situma, Evans Omondi, Marshal Mutinda Mweu, Matthew Muturi, Athman Mwatondo, Jeanette Dawa, Limbaso Konongoi, Samoel Khamadi, Erin Clancey, Eric Lofgren, Isaac Ngere, Barnabas Bakamutumaho, Allan Muruta, John Gachohi, Samuel O Oyola, M Kariuki Njenga, and Deepti Singh
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Medicine (General) ,R5-920 ,Infectious and parasitic diseases ,RC109-216 - Abstract
Background Recent epidemiology of Rift Valley fever (RVF) disease in Africa suggests growing frequency and expanding geographic range of small disease clusters in regions that previously had not reported the disease. We investigated factors associated with the phenomenon by characterising recent RVF disease events in East Africa.Methods Data on 100 disease events (2008–2022) from Kenya, Uganda and Tanzania were obtained from public databases and institutions, and modelled against possible geoecological risk factors of occurrence including altitude, soil type, rainfall/precipitation, temperature, normalised difference vegetation index (NDVI), livestock production system, land-use change and long-term climatic variations. Decadal climatic variations between 1980 and 2022 were evaluated for association with the changing disease pattern.Results Of 100 events, 91% were small RVF clusters with a median of one human (IQR, 1–3) and three livestock cases (IQR, 2–7). These clusters exhibited minimal human mortality (IQR, 0–1), and occurred primarily in highlands (67%), with 35% reported in areas that had never reported RVF disease. Multivariate regression analysis of geoecological variables showed a positive correlation between occurrence and increasing temperature and rainfall. A 1°C increase in temperature and a 1-unit increase in NDVI, one months prior were associated with increased RVF incidence rate ratios of 1.20 (95% CI 1.1, 1.2) and 1.93 (95% CI 1.01, 3.71), respectively. Long-term climatic trends showed a significant decadal increase in annual mean temperature (0.12–0.3°C/decade, p
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- 2024
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28. Pilot-scale reverse osmosis treatment of gold cyanidation effluent for the removal of cyanide, heavy metal(loid)s, and ionic species
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Cindy Goyburo-Chávez, Jonathan I. Mendez-Ruiz, Samantha Jiménez-Oyola, Paola Romero-Crespo, Leonardo Gutierrez, and Priscila E. Valverde-Armas
- Subjects
Wastewater treatment ,Mining industry ,Pilot-scale ,Reverse osmosis ,Efficiency ,Environmental engineering ,TA170-171 ,Chemical engineering ,TP155-156 - Abstract
Mining activities are crucial in driving economic and industrial progress, yet they present significant environmental and public health challenges. This study evaluated a conventional physicochemical treatment and a Reverse Osmosis (RO) system for highly contaminated effluents generated during gold cyanidation within the mining sector. Total organic and inorganic carbon, heavy metal(loid)s (Cu, Fe, Mn, Zn, Cr, Pb, AsTOTAL), and CNTOTAL were monitored in the conventional treatment system and permeate product of a pilot-scale RO unit equipped with a BW30 membrane during approximately five weeks of in-situ operation. The conventional treatment process substantially reduced organic carbon load (e.g., 79% removal efficiency). However, it proved ineffective in lowering AsTOTAL and CNTOTAL concentrations, with levels ranging from 0.2 to 0.3 mg L−1 for AsTOTAL and 110–1620 mg L−1 for CNTOTAL after treatment, thus exceeding environmental standards. In contrast, the RO treatment achieved removal rates of approximately 99% for AsTOTAL and CNTOTAL, resulting in concentrations
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- 2024
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29. Isolation and phylogenetic characterization of arboviruses circulating among phlebotomine sandflies in parts of North Rift, Kenya
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Edith Koskei, Solomon Langat, James Mutisya, Francis Mulwa, Joel Lutomiah, Hellen Koka, Samuel O. Oyola, Rebecca Waihenya, Sepha N. Mabeya, and Rosemary Sang
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sandflies ,Koutango virus ,Chandipura virus ,sindbis virus ,Ntepes virus ,Bogoria virus ,Microbiology ,QR1-502 - Abstract
BackgroundUntil recently, arbovirus surveillance is mainly focused on mosquito and tick vectors, resulting in the discovery of several mosquito- and tick-borne arboviruses. However, the role of sandflies in arbovirus transmission and disease has remained largely unexplored. This study sought to isolate and characterize arboviruses from phlebotomine sandflies from selected pastoral ecozones in the North Rift region of Kenya.MethodsSandflies were collected from selected sites in North Rift Kenya between 2015 and 2018. They were sorted and pooled by sex, site, and collection date. The pools were homogenized and inoculated onto Vero cells for virus isolation. The positive pools were analyzed by polymerase chain reaction targeting different arboviruses. The isolates were further characterized by high-throughput sequencing using Illumina Miseq platform.ResultsApproximately 28,226 sandflies translating to 824 pools were sampled from the selected regions. A total of 11 showed reproducible cytopathic effects on Vero cells. We identified five arboviruses: sindbis (n = 4) from Kacheliba and Baringo, Chandipura (n = 4) from Turkana and Baringo, Koutango (n = 1) and Ntepes (n = 1) from Baringo, and Bogoria (n = 1) from Kacheliba. The percent identities of the identified viruses were approximately 80% to 98% compared to known viruses in GenBank, suggesting that some of them could be novel viruses.ConclusionThis study successfully isolated and characterized five arboviruses from sandflies. The findings suggest that sandflies are potential hosts of a wide range of arboviruses and are therefore important vectors to consider in arbovirus surveillance and evaluated for their ability to transmit them. Further studies are needed to determine the public health importance and extent of exposure of these viruses to humans and livestock populations.
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- 2024
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30. The impact of COVID-19 for the Ecuadorian mining industry in 2020: risks and opportunities
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Paz-Barzola, Daniela, Elizalde-Pardo, Daniel, Romero-Crespo, Paola, Escobar-Segovia, Kenny, Jiménez-Oyola, Samantha, and Garcés-León, Daniel
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- 2023
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31. Heavy metal(loid)s contamination in water and sediments in a mining area in Ecuador: a comprehensive assessment for drinking water quality and human health risk
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Jiménez-Oyola, Samantha, Valverde-Armas, Priscila E., Romero-Crespo, Paola, Capa, Diego, Valdivieso, Abner, Coronel-León, Jonathan, Guzmán-Martínez, Fredy, and Chavez, Eduardo
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- 2023
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32. Trace elements in farmland soils and crops, and probabilistic health risk assessment in areas influenced by mining activity in Ecuador
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Romero-Crespo, Paola, Jiménez-Oyola, Samantha, Salgado-Almeida, Bryan, Zambrano-Anchundia, Johanna, Goyburo-Chávez, Cindy, González-Valoys, Ana, and Higueras, Pablo
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- 2023
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33. Complete Genome Sequencing and Comparative Phylogenomics of Nine African Swine Fever Virus (ASFV) Isolates of the Virulent East African p72 Genotype IX without Viral Sequence Enrichment
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Jean-Baka Domelevo Entfellner, Edward Abworo Okoth, Cynthia Kavulani Onzere, Chris Upton, Emma Peter Njau, Dirk Höper, Sonal P. Henson, Samuel O. Oyola, Edwina Bochere, Eunice M. Machuka, and Richard P. Bishop
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African swine fever virus ,ASFV ,p72 Genotype IX ,East Africa ,field isolates ,phylogenomics ,Microbiology ,QR1-502 - Abstract
African swine fever virus (ASFV) is endemic to African wild pigs (Phacochoerus and Potamochoerus), in which viral infection is asymptomatic, and Ornithodoros soft ticks. However, ASFV causes a lethal disease in Eurasian domestic pigs (Sus scrofa). While Sub-Saharan Africa is believed to be the original home of ASFV, publicly available whole-genome ASFV sequences show a strong bias towards p72 Genotypes I and II, which are responsible for domestic pig pandemics outside Africa. To reduce this bias, we hereby describe nine novel East African complete genomes in p72 Genotype IX and present the phylogenetic analysis of all 16 available Genotype IX genomes compared with other ASFV p72 clades. We also document genome-level differences between one specific novel Genotype IX genome sequence (KE/2013/Busia.3) and a wild boar cell-passaged derivative. The Genotype IX genomes clustered with the five available Genotype X genomes. By contrast, Genotype IX and X genomes were strongly phylogenetically differentiated from all other ASFV genomes. The p72 gene region, on which the p72-based virus detection primers are derived, contains consistent SNPs in Genotype IX, potentially resulting in reduced sensitivity of detection. In addition to the abovementioned cell-adapted variant, eight novel ASFV Genotype IX genomes were determined: five from viruses passaged once in primary porcine peripheral blood monocytes and three generated from DNA isolated directly from field-sampled kidney tissues. Based on this methodological simplification, genome sequencing of ASFV field isolates should become increasingly routine and result in a rapid expansion of knowledge pertaining to the diversity of African ASFV at the whole-genome level.
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- 2024
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34. Assessment of Environmental Pollution and Risks Associated with Tailing Dams in a Historical Gold Mining Area of Ecuador
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Bryan Salgado-Almeida, Arián Briones-Escalante, Daniel Falquez-Torres, Karla Filián-Haz, Fredy Guzmán-Martínez, Kenny Escobar-Segovia, Elizabeth Peña-Carpio, and Samantha Jiménez-Oyola
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potentially toxic elements ,mining environmental liabilities ,contamination index ,risk assessment ,Science - Abstract
Tailings are a significant concern due to their potential release of toxic elements into the environment, posing risks to ecosystems and human health. Therefore, understanding their polluting potential is crucial for effective mitigation strategies. This study evaluates the contaminating potential of eight tailing dams in the upper basin of the Puyango River in southern Ecuador. A physicochemical and mineralogical characterization of the tailings was conducted. The contents of As, Cd, Co, Cr, Cu, Mo, Ni, Pb, Sb, Se, V, and Zn were determined using Inductively Coupled Plasma Mass Spectrometry (ICP-MS) and Inductively Coupled Plasma Optical Emission Spectrometry (ICP-OES). The contamination index (IC) and the risk (RI) to the environment and population were evaluated. As a result, it was found that As, Cu, Pb, Se, and Zn exceeded the maximum permissible limits in all the samples according to Ecuadorian regulations. Six of the eight tailing dams presented very high pollution levels (21.28 < IC < 298.61), indicating a severe contamination risk. As, Sb, and Se were the most significant contributors to the index, with 29%, 31%, and 20% contribution to the overall IC, respectively. However, the risk assessment indicated a low risk (RI < 5) to both the population and the natural environment, mainly due to the distance between the tailing dams and the potential receptors. While the present risk associated with the studied tailing dams is low, there exists potential for long-term escalation.
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- 2024
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35. Genomic Epidemiology of Rift Valley Fever Virus Involved in the 2018 and 2022 Outbreaks in Livestock in Rwanda
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Isidore Nsengimana, John Juma, Kristina Roesel, Methode N. Gasana, Fabrice Ndayisenga, Claude M. Muvunyi, Emmanuel Hakizimana, Jean N. Hakizimana, Gillian Eastwood, Augustino A. Chengula, Bernard Bett, Christopher J. Kasanga, and Samuel O. Oyola
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Rwanda ,RVFV ,outbreak ,genome ,sequence ,phylogeny ,Microbiology ,QR1-502 - Abstract
Rift Valley fever (RVF), a mosquito-borne transboundary zoonosis, was first confirmed in Rwanda’s livestock in 2012 and since then sporadic cases have been reported almost every year. In 2018, the country experienced its first large outbreak, which was followed by a second one in 2022. To determine the circulating virus lineages and their ancestral origin, two genome sequences from the 2018 outbreak, and thirty-six, forty-one, and thirty-eight sequences of small (S), medium (M), and large (L) genome segments, respectively, from the 2022 outbreak were generated. All of the samples from the 2022 outbreak were collected from slaughterhouses. Both maximum likelihood and Bayesian-based phylogenetic analyses were performed. The findings showed that RVF viruses belonging to a single lineage, C, were circulating during the two outbreaks, and shared a recent common ancestor with RVF viruses isolated in Uganda between 2016 and 2019, and were also linked to the 2006/2007 largest East Africa RVF outbreak reported in Kenya, Tanzania, and Somalia. Alongside the wild-type viruses, genetic evidence of the RVFV Clone 13 vaccine strain was found in slaughterhouse animals, demonstrating a possible occupational risk of exposure with unknown outcome for people working in meat-related industry. These results provide additional evidence of the ongoing wide spread of RVFV lineage C in Africa and emphasize the need for an effective national and international One Health-based collaborative approach in responding to RVF emergencies.
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- 2024
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36. Save lives in the next pandemic: ensure vaccine equity now
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Carlson, Colin, Becker, Daniel, Happi, Christian, O’Donoghue, Zoe, de Oliveira, Tulio, Oyola, Samuel O., Poisot, Timothée, Seifert, Stephanie, and Phelan, Alexandra
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- 2024
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37. A pan-African pathogen genomics data sharing platform to support disease outbreaks
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Christoffels, Alan, Mboowa, Gerald, van Heusden, Peter, Makhubela, Sello, Githinji, George, Mwangi, Sarah, Onywera, Harris, Nnaemeka, Ndodo, Amoako, Daniel Gyamfi, Olawoye, Idowu, Diallo, Amadou, Mbala-Kingebeni, Placide, Oyola, Samuel O., Adu, Bright, Mvelase, Christopher, Ondoa, Pascale, Dratibi, Fred Athanasius, Sow, Abdourahmane, Gumede, Nicksy, Tessema, Sofonias K., Ouma, Ahmed Ogwell, and Tebeje, Yenew Kebede
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- 2023
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38. Políticas ambientales: responsabilidad educativa para el cuidado de la naturaleza
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María Gladys Chicaiza Cóndor, Rodolfo Cornejo Urbina, Ana Senia Oyola Tamayo, and Paola Carolina Hernández Pillajo
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políticas ambientales ,educación ambiental ,comunidad educativa ,naturaleza ,Commerce ,HF1-6182 ,Business ,HF5001-6182 - Abstract
El objetivo del estudio se fundamenta en analizar la educación ambiental y la promoción de políticas ambientales efectivas en la formación de estudiantes responsables en el cuidado de la naturaleza. La metodología utilizada fue teórica, dirigido a profundizar las políticas ambientales frente a la responsabilidad de los actores educativos para su cumplimiento. Se analizaron dos componentes: las políticas relacionadas con la educación ambiental con el fin de evaluar el alcance en la responsabilidad de cuidar y proteger el planeta; y la gestión de la educación direccionada a proteger el medio ambiente con el propósito de seguir un camino que promueva las prácticas sostenibles en la comunidad educativa. La existencia de políticas nacionales e internacionales para abordar el daño humano al medio ambiente es un avance importante, como también la evaluación y monitoreo de estas políticas, para asegurar que se produzcan los resultados deseados. Se concluye que, a pesar de existir muchas políticas ambientales, su efectividad depende en gran medida de cómo se aborde la educación ambiental en cada país; es decir, el éxito está en formar a la comunidad educativa en conciencia ambiental, para que puedan solucionar a corto plazo el cambio climático y la degradación ambiental.
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- 2023
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39. Decoding the endometrial niche of Asherman’s Syndrome at single-cell resolution
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Xavier Santamaria, Beatriz Roson, Raul Perez-Moraga, Nandakumar Venkatesan, Maria Pardo-Figuerez, Javier Gonzalez-Fernandez, Jaime Llera-Oyola, Estefania Fernández, Inmaculada Moreno, Andres Salumets, Hugo Vankelecom, Felipe Vilella, and Carlos Simon
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Science - Abstract
Abstract Asherman’s Syndrome is characterized by intrauterine adhesions or scarring, which cause infertility, menstrual abnormalities, and recurrent pregnancy loss. The pathophysiology of this syndrome remains unknown, with treatment restricted to recurrent surgical removal of intrauterine scarring, which has limited success. Here, we decode the Asherman’s Syndrome endometrial cell niche by analyzing data from over 200,000 cells with single-cell RNA-sequencing in patients with this condition and through in vitro analyses of Asherman’s Syndrome patient-derived endometrial organoids. Our endometrial atlas highlights the loss of the endometrial epithelium, alterations to epithelial differentiation signaling pathways such as Wnt and Notch, and the appearance of characteristic epithelium expressing secretory leukocyte protease inhibitor during the window of implantation. We describe syndrome-associated alterations in cell-to-cell communication and gene expression profiles that support a dysfunctional pro-fibrotic, pro-inflammatory, and anti-angiogenic environment.
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- 2023
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40. Green Fleet: A Prototype Biogas and Hydrogen Refueling Management System for Private Fleet Stations
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Antonio Martín-Márquez, José Francisco Rangel-Serrano, José Manuel Oyola-González, Adrian Talegón-Vázquez, Mario Garrido, Rodrigo García-Velayos, Carla Patricia García-Heras, David Bolonio, and Marcelo F. Ortega-Romero
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green hydrogen ,biogas ,heavy transport ,fleet management ,private refueling stations ,facilities monitoring ,Fuel ,TP315-360 - Abstract
Biogas and hydrogen (H2) are breaking through as alternative energy sources in road transport, specifically for heavy-duty vehicles. Until a public network of service stations is deployed for such vehicles, the owners of large fleets will need to build and manage their own refueling facilities. Fleet refueling management and remote monitoring at these sites will become key business needs. This article describes the construction of a prototype system capable of solving those needs. During the design and development process of the prototype, the standard industry protocols involved in these installations have been considered, and the latest expertise in information technology systems has been applied. This prototype has been essential to determine the Strengths, Challenges, Opportunities and Risks (SCOR) of such a system, which is the first step of a more ambitious project. A second stage will involve setting up a pilot study and developing a commercial system that can be widely installed to provide a real solution for the industry.
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- 2023
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41. Social determinants of covid-19 mortality: The Peruvian case
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César Cipriano Zea-Montesinos, Olga Vicentina Pacovilca-Alejo, Gelber Sebasti Pacovilca-Alejo, José Santiago Almeida-Galindo, Zaida Zagaceta-Guevara, Héctor Vicehich Millán-Camposano, Melisa Pamela Quispe-Ilanzo, and Alfredo Enrique Oyola-García
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infecciones por coronavirus ,pandemias ,efectos colectivos de las desigualdades en salud ,mortalidad ,Medicine (General) ,R5-920 ,Public aspects of medicine ,RA1-1270 - Abstract
Introduction: The impact of the COVID-19 pandemic has been very different in terms of morbidity and mortality, even among those territories with similar socioeconomic conditions and political backgrounds. Objective: To identify social determinants of socio-geographic inequality from COVID-19 mortality in Peru during the first year of pandemic. Material and Methods: Observational ecological research, based on the secondary analysis of mortality by COVID-19 during the year 2020 in the subnational governments of Peru. Results: The percentage of the population registered with social security was the only variable with statistical significance (t=2.921; p=0.008) that explained GMR due to COVID-19 (F=21.360; p=0.000). Adequate employment was the only variable with statistical significance (t=3.018; p=0.006) that explained SMR due to COVID-19 (F=18.910; p=0.000). The excess GMR and SMR due to COVID-19 amounted to 227.93 and 138.76 deaths per 100,000 inhabitants along the social gradient determined by the population enrolled in social security and those with adequate employment, respectively. Conclusions: The percentage of the economically active population with adequate employment, which is mainly under the social security, would have been the social determinant of the socio-gepgrphic inequality in COVID-19 mortality between the different subnational governments of Peru during the first year of the pandemic.
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- 2024
42. Características clínico-demográficas de sujetos de sala de cirugía general que requirieron interconsulta con la unidad de kinesiología de un hospital público de la Ciudad Autónoma de Buenos Aires: estudio descriptivo y retrospectivo
- Author
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Franco Javier Fabani, Micaela Oyola, Sandra Salzberg, and Damian Steinberg
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cirugía general ,cirugía torácica ,complicaciones postquirúrgicas ,oxígenoterapia ,rehabilitación ,servicio de fisioterapia en hospital ,Medicine - Abstract
Objetivo: Describir las características clínico-demográficas de sujetos internados luego de una intervención quirúrgica que recibieron asistencia kinésica (AK) en sala de cirugía general de un hospital público de Ciudad Autónoma de Buenos Aires (CABA). El objetivo secundario es describir el uso de dispositivos de oxigenoterapia, el desarrollo de complicaciones pulmonares postoperatorias (CPP) y el tiempo transcurrido hasta la AK. Materiales y métodos: Se incluyeron datos de fichas kinésicas de sujetos que se sometieron a una cirugía abdominal, torácica o pélvica y que recibieron AK entre enero de 2019 y diciembre de 2022. Se registraron datos demográficos y clínicos, motivo de consulta kinésica, desarrollo de CPP, cantidad de días de AK y uso de de oxigenoterapia. Resultados: Se incluyeron 151 fichas kinésicas. Del total, 15 sujetos (9,9 %) desarrollaron CPP. En este grupo, la mediana de días transcurridos entre la cirugía y el comienzo de la AK fue de 8 días (RIQ 4-16), mientras que para los sujetos que no desarrollaron complicaciones fue de 4 días (RIQ 2-7). Un total de 57 sujetos (37,5 %) requirieron oxigenoterapia, de los cuales 3 requirieron ventilación mecánica invasiva y 1 no invasiva. Conclusión: Se describieron las características clínico-demográficas de sujetos postquirúrgicos internados en sala de cirugía general de un hospital general de agudos de la CABA. Aquellos sujetos con CPP recibieron más días de AK y requirieron oxígeno suplementario durante un período más extenso. Los sujetos que no desarrollaron CPP recibieron AK en una etapa más temprana, en comparación con los que desarrollaron complicaciones.
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- 2024
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43. La cultura organizacional y su efecto motivacional en los trabajadores de una empresa privada
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Milagros Judith Pérez-Pérez, Percy Junior Castro-Mejía, Maximiliano Oyola-Fernández, María del Carmen Peña-Rivera, and Marli Ruiz-Guerrero
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Engineering (General). Civil engineering (General) ,TA1-2040 - Abstract
El objetivo de la investigación fue analizar la cultura organizacional y su efecto motivacional en los trabajadores de una empresa privada. El estudio tuvo un enfoque cuantitativo y fue del tipo aplicado, con un diseño no experimental, transversal y correlacional. La población estuvo conformada por 100 individuos y se realizó un muestreo probabilístico aleatorio simple, donde el universo de estudio tuvo las mismas probabilidades de ser seleccionado, dando como resultado la aplicación del instrumento a 80 trabajadores de la empresa privada. Para la recolección de datos se utilizó la técnica denominada encuesta, siendo su instrumento el cuestionario con 36 preguntas basadas en las variables de estudio y 5 opciones de respuesta para cada una según una escala tipo Likert, las cuales fueron respondidas en línea por los colaboradores. Los resultados reflejan una correlación significativa entre la cultura organizacional y el efecto motivacional de los trabajadores, con un coeficiente de correlación de Spearman de 0,504** y un valor de p de 0,000. Esto indicó que la cultura organizacional tiene una influencia reveladora en la motivación de los trabajadores de la empresa privada.
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- 2024
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44. Programa de comunicación interna para el clima laboral en una red asistencial de salud del Perú
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Nury Madeleyne Medina-Pariente, Hugo Milton Oyola-Cortez, and Flor Delicia Heredia-Llatas
- Subjects
omunicación interna ,clima laboral ,programa ,propuesta ,gestión ,Engineering (General). Civil engineering (General) ,TA1-2040 - Abstract
Las organizaciones públicas están sujetas cada vez más a una exigencia de parte de la ciudadanía, por lo cual, el objetivo de la presente investigación es proponer un programa de operabilidad de comunicación interna para el personal de una red asistencial de Perú. La investigación es de carácter cuantitativa descriptiva, muestreo probabilístico de tipo aleatorio simple, con una muestra poblacional de 67 servidores; se utilizó la encuesta como técnica y como instrumento el cuestionario de clima laboral y comunicación interna. Los instrumentos obtuvieron una alta confiablidad a través del coeficiente de Alfa de Cronbach con un 0.87 para la comunicación interna y 0.86 para el clima laboral. De los resultados, la comunicación interna es percibida con un 62.7 % de nivel regular, es decir esta variable necesita ser fortalecida entre los colaboradores para mantenerlos informados y lograr los objetivos de la institución sobre todo en la dimensión de comunicación vertical descendente al existir barreras de comunicación; mientras tanto, el clima laboral es percibida en un nivel por mejorar (52.23 %), ya que un buen grupo de trabajadores aún les falta sentirse comprometidos con el éxito de la institución. Por tal motivo, se propone un programa de operabilidad para que se fortalezca la gestión de comunicación interna y mejore el clima laboral, siendo validado por el método de Delphi con una escala de valoración alta, concluyendo que la propuesta es conveniente para su aplicación.
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- 2024
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45. Metagenomic Characterization of Poultry Cloacal and Oropharyngeal Swabs in Kenya Reveals Bacterial Pathogens and Their Antimicrobial Resistance Genes
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Philip M. Panyako, Sheila C. Ommeh, Stephen N. Kuria, Jacqueline K. Lichoti, Johns Musina, Venugopal Nair, Vish Nene, Muhammad Munir, and Samuel O. Oyola
- Subjects
Microbiology ,QR1-502 - Abstract
Poultry enteric bacterial diseases are of significant economic importance because they are responsible for production losses due to weight loss, increased morbidity and mortality, and increased cost of production arising from poor feed conversion and treatment. This cross-sectional purposive study characterized enteric bacterial pathogens in poultry from selected agroclimatic regions in Kenya and investigated their antimicrobial resistance gene profiles. Cloacal (n = 563) and oropharyngeal (n = 394) swabs were collected and pooled into 16 and 14 samples, respectively, to characterize bacterial pathogens and their antimicrobial resistance gene profiles. We report that Proteobacteria, Chlamydiae, and Firmicutes are the most dominant phyla present in both cloacal and oropharyngeal swabs of the six poultry species studied, indicating the colonization of the poultry gut by many pathogenic bacteria. Using KEGG and COG databases, some pathways related to metabolism, genetic information, and cellular processing were detected. We also report the abundance of antimicrobial resistance genes that confer resistance to β-lactamases, aminoglycosides, and tetracycline in most of the poultry analyzed, raising concern about the dangers associated with continuous and inappropriate use of these antibiotics in poultry production. The antimicrobial resistance gene data generated in this study provides a valuable indicator of the use of antimicrobials in poultry in Kenya. The information generated is essential for managing bacterial diseases, especially in backyard poultry raised under scavenging conditions.
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- 2024
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46. Prediction models of COVID-19 fatality in nine Peruvian provinces: A secondary analysis of the national epidemiological surveillance system.
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Wendy Nieto-Gutierrez, Jaid Campos-Chambergo, Enrique Gonzalez-Ayala, Oswaldo Oyola-Garcia, Alberti Alejandro-Mora, Eliana Luis-Aguirre, Roly Pasquel-Santillan, Juan Leiva-Aguirre, Cesar Ugarte-Gil, and Steev Loyola
- Subjects
Public aspects of medicine ,RA1-1270 - Abstract
There are initiatives to promote the creation of predictive COVID-19 fatality models to assist decision-makers. The study aimed to develop prediction models for COVID-19 fatality using population data recorded in the national epidemiological surveillance system of Peru. A retrospective cohort study was conducted (March to September of 2020). The study population consisted of confirmed COVID-19 cases reported in the surveillance system of nine provinces of Lima, Peru. A random sample of 80% of the study population was selected, and four prediction models were constructed using four different strategies to select variables: 1) previously analyzed variables in machine learning models; 2) based on the LASSO method; 3) based on significance; and 4) based on a post-hoc approach with variables consistently included in the three previous strategies. The internal validation was performed with the remaining 20% of the population. Four prediction models were successfully created and validate using data from 22,098 cases. All models performed adequately and similarly; however, we selected models derived from strategy 1 (AUC 0.89, CI95% 0.87-0.91) and strategy 4 (AUC 0.88, CI95% 0.86-0.90). The performance of both models was robust in validation and sensitivity analyses. This study offers insights into estimating COVID-19 fatality within the Peruvian population. Our findings contribute to the advancement of prediction models for COVID-19 fatality and may aid in identifying individuals at increased risk, enabling targeted interventions to mitigate the disease. Future studies should confirm the performance and validate the usefulness of the models described here under real-world conditions and settings.
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- 2024
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47. Decoding the endometrial niche of Asherman’s Syndrome at single-cell resolution
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Santamaria, Xavier, Roson, Beatriz, Perez-Moraga, Raul, Venkatesan, Nandakumar, Pardo-Figuerez, Maria, Gonzalez-Fernandez, Javier, Llera-Oyola, Jaime, Fernández, Estefania, Moreno, Inmaculada, Salumets, Andres, Vankelecom, Hugo, Vilella, Felipe, and Simon, Carlos
- Published
- 2023
- Full Text
- View/download PDF
48. Compound climate-pollution extremes in Santiago de Chile
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Feron, Sarah, Cordero, Raúl R., Damiani, Alessandro, Oyola, Pedro, Ansari, Tabish, Pedemonte, Juan C., Wang, Chenghao, Ouyang, Zutao, and Gallo, Valentina
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- 2023
- Full Text
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49. Internet addiction and mental health disorders in high school students in a Peruvian region: a cross-sectional study
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Jean C. Perez-Oyola, Dionela M. Walter-Chavez, J. Pierre Zila-Velasque, César Johan Pereira-Victorio, Virgilio E. Failoc-Rojas, Víctor J. Vera-Ponce, Danai Valladares-Garrido, and Mario J. Valladares-Garrido
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Internet addiction disorder ,Anxiety ,Depression ,Adolescent ,Hispanic or Latino ,Psychiatry ,RC435-571 - Abstract
Abstract Objectives To determine the association between internet addiction disorder (IAD) and anxiety and depressive symptomatology in high school students in two private schools in Chiclayo, Peru, during the COVID-19 pandemic. Materials and methods Analytical cross-sectional investigation of 505 adolescents from two private schools. The dependent variables were anxiety and depressive symptomatology, measured with the Beck Adapted Depression Questionnaire (BDI-IIA) and the Beck Anxiety Inventory (BAI), respectively. The main independent variable was IAD, measured with the Internet Addiction Test instrument(IATI). Prevalence ratios (PR) and 95% confidence intervals (95%CI) were estimated. Results The average age was 14.16 years and 54.9% were women. 22.2% and 3.2% presented mild and moderate IAD; respectively. 9.3% presented severe anxiety and 34.3% severe depressive symptomatology. In the simple regression, adolescents with mild, moderate and severe IAD presented 19% (PR = 1.19; 95%CI: 1.05–1.35), 25% (PR = 1.25; 95%CI: 1.02–1.53) and 53% (PR = 1.47; 95% CI: 1.47–1.60) higher prevalence of depressive symptomatology; however, this association was not maintained in the multiple model. Anxiety increased 196% in adolescents with severe IAD (PR = 2.96; 95%CI: 1.86–4.71). Conclusion We found that 2, 1, and 3 out of 10 students presented IAD, depressive symptomatology, and anxiety, respectively. We did not find an association between IAD and depressive symptomatology, but we did find an association with anxiety. Among the factors associated with the development of depressive symptomatology were the male sex, the presence of eating disorders, subclinical insomnia, using devices for more than 2 h, and using the Internet for academic activities. About anxiety, the associated factors are the female sex, the presence of eating disorders, subclinical insomnia, and the use of the Internet as social interaction. We recommend implementing counseling programs in view of the imminent introduction of the Internet as a pillar in education.
- Published
- 2023
- Full Text
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50. Efficacy, safety, and acceptability of polyethylene glycol 3350 without electrolytes vs magnesium hydroxide in functional constipation in children from six months to eighteen years of age: A controlled clinical trial
- Author
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L. Worona-Dibner, R. Vázquez-Frias, L. Valdez-Chávez, and M. Verdiguel-Oyola
- Subjects
Estreñimiento funcional ,Hidróxido de magnesio ,Leche de magnesia ,Polietilenglicol 3350 sin electrolitos ,Niños ,Diseases of the digestive system. Gastroenterology ,RC799-869 - Abstract
Introduction and aims: There are few studies that compare polyethylene glycol (PEG) 3350 and magnesium hydroxide (MH), as long-term treatment of functional constipation (FC) in children, and they do not include infants as young as 6 months of age. Our aim was to determine the efficacy, safety, and acceptability of PEG vs MH in FC, in the long term, in pediatric patients. Methods: An open-label, parallel, controlled clinical trial was conducted on patients from 6 months to 18 years of age, diagnosed with FC, that were randomly assigned to receive PEG 3350 or MH for 12 months. Success was defined as: ≥ 3 bowel movements/week, with no fecal incontinence, fecal impaction, abdominal pain, or the need for another laxative. We compared adverse events and acceptability, measured as rejected doses of the laxative during the study, in each group and subgroup. Results: Eighty-three patients with FC were included. There were no differences in success between groups (40/41 PEG vs 40/42 MH, p = 0.616). There were no differences in acceptability between groups, but a statistically significant higher number of patients rejected MH in the subgroups > 4 to 12 years and > 12 to 18 years of age (P = .037 and P = .020, respectively). There were no differences regarding adverse events between the two groups and no severe clinical or biochemical adverse events were registered. Conclusions: The two laxatives were equally effective and safe for treating FC in children from 0.5 to 18 years of age. Acceptance was better for PEG 3350 than for MH in patients above 4 years of age. MH can be considered first-line treatment for FC in children under 4 years of age. Resumen: Introducción y objetivo: Existen pocos estudios comparativos entre polietilenglicol (PEG) 3350 e hidróxido de magnesio (HM) para tratar el estreñimiento funcional (EF) a largo plazo en niños, y no incluyen lactantes desde 6 meses. El objetivo fue determinar la eficacia, la seguridad y la aceptabilidad de PEG vs HM en el EF a largo plazo en pacientes pediátricos. Métodos: Ensayo clínico controlado, paralelo, abierto, en pacientes de 6 meses a 18 años con diagnóstico de EF asignados aleatoriamente a PEG 3350 o HM durante 12 meses. Se definió éxito: ≥ 3 evacuaciones/semana, sin incontinencia fecal, impactación fecal, dolor abdominal o necesidad de otro laxante. Se compararon eventos adversos, así como la aceptabilidad, medida como dosis rechazadas del laxante durante el estudio en cada grupo y subgrupo. Resultados: Se incluyeron 83 pacientes con EF, sin que presentaran diferencias en éxito entre ambos grupos (40/41 PEG vs 40/42 HM, p = 0.616). No hubo diferencias en aceptabilidad entre ambos grupos, pero un número significativamente mayor de pacientes rechazó la leche de magnesia en los subgrupos de > 4 a 12 años y de > 12 a 18 años (p = 0.037 y p = 0.020, respectivamente). No hubo diferencias de eventos adversos entre ambos grupos y no se registraron eventos adversos clínicos ni bioquímicos graves. Conclusiones: Ambos laxantes fueron igualmente efectivos y seguros para tratar el EF en niños de 0.5 a 18 años. El PEG 3350 fue mejor aceptado que el HM por los pacientes mayores de 4 años. El HM puede ser considerado como tratamiento de primera línea para EF en niños menores de 4 años.
- Published
- 2023
- Full Text
- View/download PDF
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