235,670 results match your criteria: "Mexico; Institute of Biology[Affiliation]"

An intraocular lens (IOL) replaces the natural crystalline lens during cataract surgery, and although the vast majority of implants have simple optics, "advanced technology" IOLs have multifocal and extended depth of focus (EDOF) properties. Optical concepts are evaluated here, with image contrast, focal range, and unwanted visual phenomena being the primary concerns. Visual phenomena with earlier bifocal diffractive lenses led to alternative diffractive designs (trifocals, etc.

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The oral epithelium, a dynamic interface constantly facing environmental challenges, relies on intricate molecular pathways to maintain its homeostasis. This comprehensive review delves into the nuanced interplay between T-lymphocytic cells (T cells) and RNA-binding proteins (RBPs) within the oral epithelium, elucidating their roles in orchestrating immune responses and influencing tissue plasticity. By synthesizing current knowledge, we aim to unravel the molecular intricacies that govern this interplay, with a focus on potential therapeutic implications for oral health and diseases.

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Historically, it takes an average of 17 years to move new treatments from clinical evidence to daily practice. Given the highly effective treatments now available to prevent or delay kidney disease onset and progression, this is far too long. The time is now to narrow the gap between what we know and what we do.

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Developmental Trajectories and Differences in Functional Brain Network Properties of Preterm and At-Term Neonates.

Hum Brain Mapp

January 2025

Instituto de Neurobiología, Universidad Nacional Autónoma de México, Querétaro, Mexico.

Premature infants, born before 37 weeks of gestation can have alterations in neurodevelopment and cognition, even when no anatomical lesions are evident. Resting-state functional neuroimaging of naturally sleeping babies has shown altered connectivity patterns, but there is limited evidence on the developmental trajectories of functional organization in preterm neonates. By using a large dataset from the developing Human Connectome Project, we explored the differences in graph theory properties between at-term (n = 332) and preterm (n = 115) neonates at term-equivalent age, considering the age subgroups proposed by the World Health Organization for premature birth.

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Impact of Botfly Parasitism on the Behavior of Mantled Howler Monkeys.

Am J Primatol

January 2025

Primate Behavioral Ecology Lab, Instituto de Neuro-etología, Universidad Veracruzana, Xalapa, México.

Parasitism, a widespread nutrient acquisition strategy among animals, results from a long evolutionary history where one species derives its metabolic needs from another. Parasites can significantly reduce host fitness, affecting reproduction, growth, and survivability. Vertebrate hosts exhibit defensive strategies against parasites, including "sickness behaviors" such as lethargy and self-grooming to remove ectoparasites.

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In recent decades, the common and the tropical bed bugs have experienced a resurgence in many parts of the world. The evolution of insecticide resistance in bed bug populations is considered a significant factor contributing to this resurgence. We analyzed samples of Cimex lectularius L.

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Los olvidados: Non-BRCA variants associated with Hereditary breast cancer in Mexican population.

Breast Cancer Res

January 2025

Servicio de Oncología, Centro Universitario Contra el Cáncer (CUCC), Hospital Universitario "Dr. José Eleuterio González", Universidad Autónoma de Nuevo León, 66451, Monterrey, Nuevo León, México.

Background: Hereditary predisposition to breast and ovarian cancer syndrome (HBOC) is a pathological condition with increased cancer risk, including breast (BC), ovarian cancer (OC), and others. HBOC pathogenesis is caused mainly by germline pathogenic variants (GPV) in BRCA1 and BRCA2 genes. However, other relevant genes are related to this syndrome diagnosis, prognosis, and treatment, including TP53, PALB2, CHEK2, ATM, etc.

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Relationship between the learning gains and learning style preferences among students from the school of medicine and health sciences.

BMC Med Educ

January 2025

Laboratorio de Inmunofarmacología, Instituto Nacional de Enfermedades Respiratorias, Calzada de Tlalpan 4502, Colonia Sección XVI, CP 14080, Mexico, México.

Background: The field of health sciences is constantly evolving, presenting significant challenges to student learning performance. Therefore, it is crucial to identify the factors influencing students' learning style preferences, as these relate to how they acquire, understand, interpret, organize, and process information from their courses. In this study, we evaluated whether there is a relationship between students' learning style preferences and their learning gains.

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Background: Intracranial hemorrhage (ICH) is a devastating stroke subtype with a high rate of mortality and disability. Therapeutic options available are primarily limited to supportive care and blood pressure control, whereas the surgical approach remains controversial. In this study, we explored the effects of noninvasive vagus nerve stimulation (nVNS) on hematoma volume and outcome in a rat model of collagenase-induced ICH.

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Nailfold Capillaroscopy (NFC) is a simple, non-invasive diagnostic tool used to detect microvascular changes in nailfold. Chronic pathological changes associated with a wide range of systemic diseases, such as diabetes, cardiovascular disorders, and rheumatological conditions like systemic sclerosis, can manifest as observable microvascular changes in the terminal capillaries of nailfolds. The current gold standard relies on experts performing manual evaluations, which is an exhaustive time-intensive, and subjective process.

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Community Views of Determinants of Men's Wellbeing in Guatemala: A Study Using Fuzzy Cognitive Mapping.

Community Health Equity Res Policy

January 2025

Participatory Research at McGill (CIET-PRAM), Department of Family Medicine, Faculty of Medicine and Health Sciences, McGill University, Montreal, Canada.

Background: In post-conflict Guatemala, Indigenous men's psychological distress has been linked to violence exposure, disrupted social support systems, and structural inequities.

Purpose: We aimed to document how communities themselves understand men's wellbeing and the factors that influence men's wellbeing.

Research Design And Study Sample: Fuzzy Cognitive Mapping with 20 stakeholder groups in Santiago Atitlán and Cuilco, Guatemala defined men's wellbeing in local terms and identified the influences community groups understood to promote and detract from men's wellbeing.

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Clinical expression of radiographic axial spondyloarthritis and its association with HLA-B27 in European and Ibero-American populations.

J Rheumatol

January 2025

Clementina López-Medina, MD, PhD, Department of Rheumatology, Reina Sofia University Hospital; GC-05 Group, Maimonides Institute for Biomedical Research of Cordoba, IMIBIC; Medical and Surgical Sciences, University of Cordoba, Cordoba, Spain.

Objective: To compare the clinical and sociodemographic characteristics of Ibero-American patients with radiographic axial spondyloarthritis (r-axSpA) to those of European patients, with a particular focus on the influence of HLA-B27.

Methods: This was an observational, cross-sectional, and multicentre study of patients who fulfilled the European Spondyloarthropathy Study Group (ESSG) criteria for SpA from the REGISPONSER and RESPONDIA registries. Univariate and multivariate analyses between European and Ibero-American populations stratified by HLA-B27 status were conducted.

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Effect of Characteristic Inflammatory and Structural Pelvic Magnetic Resonance Imaging Lesions on Expert Assessment of Axial Juvenile Spondyloarthritis.

J Rheumatol

January 2025

P.F. Weiss, MD, MSCE, Department of Pediatrics, Division of Rheumatology and Clinical Futures, Children's Hospital of Philadelphia and Center for Clinical Epidemiology and Biostatistics, Perelman School of Medicine, University of Pennsylvania, Philadelphia, Pennsylvania, USA. Pennsylvania, USA.

Objective: To evaluate the influence of pelvic magnetic resonance imaging (MRI) findings on axial disease assessment in juvenile spondyloarthritis (JSpA).

Methods: This was a cross-sectional study of patients with JSpA with suspected axial disease. Three experts reviewed each case and rated their confidence (-3 to +3) in the presence of axial disease, first with clinical data and second with clinical and MRI data.

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Integrating nanotechnology with tissue engineering has revolutionized biomedical sciences, enabling the development of advanced therapeutic strategies. Tissue engineering applications widely utilize alginate due to its biocompatibility, mild gelation conditions, and ease of modification. Combining different nanomaterials with alginate matrices enhances the resulting nanocomposites' physicochemical properties, such as mechanical, electrical, and biological properties, as well as their surface area-to-volume ratio, offering significant potential for tissue engineering applications.

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NHERF2 regulatory function in signal transduction pathways and control of gene expression: Implications for cellular homeostasis and breast cancer.

Arch Med Res

January 2025

Programa de Investigación de Cancer de Mama, Instituto de Investigaciones Biomédicas, Universidad Nacional Autónoma de México, Mexico City, Mexico; Departamento de Medicina Genómica y Toxicología Ambiental, Instituto de Investigaciones Biomédicas, Universidad Nacional Autónoma de México, Mexico City, Mexico. Electronic address:

Na⁺/H⁺ exchanger regulatory factor 2 (NHERF2) is a nucleocytoplasmic protein initially identified as a regulator of membrane-bound sodium-hydrogen exchanger 3 (NHE3). In the cytoplasm, NHERF2 regulates the activity of G protein-coupled receptors (GPCRs), including beta-2 adrenergic receptor (2β-AR), lysophosphatidic acid receptor 2, and parathyroid hormone type 1 receptor. In the nucleus, NHERF2 acts as a coregulator of transcription factors such as sex-determining region Y protein (SRY), involved in male sex determination, and estrogen receptor alpha (ERα).

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Amaranth is a pre-Columbian staple crop used as a nutritious gluten-free grain associated with several health properties. Instant Controlled Pressure Drop (DIC) is an emerging technology used in many food industries. This study evaluates the effect of DIC treatment on amaranth.

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Survival with Trastuzumab Emtansine in Residual HER2-Positive Breast Cancer.

N Engl J Med

January 2025

From the National Surgical Adjuvant Breast and Bowel Project (NSABP) Foundation (C.E.G., E.P.M., N.W., P.R., I.L.W., A.M.B.) and University of Pittsburgh School of Medicine-UPMC Hillman Cancer Center (C.E.G., N.W., P.R., A.M.B.) - both in Pittsburgh; AGO-B and Helios Klinikum Berlin-Buch, Berlin (M.U.), the National Center for Tumor Diseases, Heidelberg University Hospital, and German Cancer Research Center, Heidelberg (A.S.), Evangelische Kliniken Gelsenkirchen, Gelsenkirchen (H.H.F.), Arbeitsgemeinschaft Gynäkologische Onkologie-Breast and Sana Klinikum Offenbach, Offenbach (C.J.), the Department of Gynecology and Obstetrics, University Hospital Erlangen, Comprehensive Cancer Center Erlangen-EMN, Friedrich-Alexander University Erlangen-Nuremberg, Erlangen (P.A.F.), German Breast Group, Neu-Isenburg (P.W., S.L.), and the Center for Hematology and Oncology Bethanien, Goethe University, Frankfurt (S.L.) - all in Germany; National Taiwan University Hospital and National Taiwan University College of Medicine, Taipei, Taiwan (C.-S.H.); Instituto do Câncer do Estado de São Paulo, São Paulo (M.S.M.); Orlando Health Cancer Institute, Orlando, FL (E.P.M.); Hospital Universitario La Paz-Instituto de Investigación del Hospital Universitario La Paz, Madrid (A.R.); L'Institut du Cancer de Montpellier-Val d'Aurelle, Montpellier (V.D.), Institut Bergonié, INSERM Unité 1312, and Université de Bordeaux UFR Sciences Médicales, Bordeaux (H.R.B.) - all in France; Providence Cancer Institute, Portland, OR (A.K.C.); the Department of Surgery, Oncology, and Gastroenterology, University of Padua, and Oncology 2, Istituto Oncologico Veneto IRCCS, Padua (V.G.), and the Cancer Center Azienda Socio Sanitaria Territoriale Papa Giovanni XXIII, Bergamo (E.R.C.) - all in Italy; Stanford University School of Medicine, Stanford, CA (I.L.W.); the National Cancer Institute, Mexico City (C.A.-S.); Yale University School of Medicine, Yale Cancer Center, and Smilow Cancer Hospital, New Haven, CT (M.P.D.); the All-Ireland Cooperative Oncology Research Group (J.P.C.), and the Oncology Unit, Cancer Clinical Trials and Research Unit, Beaumont RCSI Cancer Centre, and Cancer Trials Ireland (B.T.H.) - all in Dublin; Fudan University Shanghai Cancer Center, Shanghai, China (Z.S.); Institute for Oncology and Radiology of Serbia, Belgrade (L.S.); Grupo Médico Ángeles, Guatemala City, Guatemala (H.C.-S.); Roche Products, Welwyn Garden City, United Kingdom (A.K., A.S.); and F. Hoffmann-La Roche, Basel, Switzerland (C.L., T.B., B.N., E.R.).

Background: Patients with human epidermal growth factor receptor 2 (HER2)-positive early breast cancer with residual invasive disease after neoadjuvant systemic therapy have a high risk of recurrence and death. The primary analysis of KATHERINE, a phase 3, open-label trial, showed that the risk of invasive breast cancer or death was 50% lower with adjuvant trastuzumab emtansine (T-DM1) than with trastuzumab alone.

Methods: We randomly assigned patients with HER2-positive early breast cancer with residual invasive disease in the breast or axilla after neoadjuvant systemic treatment with taxane-based chemotherapy and trastuzumab to receive T-DM1 or trastuzumab for 14 cycles.

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A framework for assessing reliability of observer annotations of aerial wildlife imagery, with insights for deep learning applications.

PLoS One

January 2025

Division of Biological Sciences, US Fish and Wildlife Southwest Regional Office, Albuquerque, New Mexico, United States of America.

There is growing interest in using deep learning models to automate wildlife detection in aerial imaging surveys to increase efficiency, but human-generated annotations remain necessary for model training. However, even skilled observers may diverge in interpreting aerial imagery of complex environments, which may result in downstream instability of models. In this study, we present a framework for assessing annotation reliability by calculating agreement metrics for individual observers against an aggregated set of annotations generated by clustering multiple observers' observations and selecting the mode classification.

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Outcomes of simple gastroschisis surgical treatment in a highly specialized hospital.

Cir Pediatr

January 2025

Health Education and Research Department. Instituto Mexicano del Seguro Social, Centro Médico Nacional del Bajío, Highly Specialized Medical Unit, Hospital de Gineco Pediatría Nº 48. León, Guanajuato, Mexico.

Objective: To assess the outcomes of three surgical techniques in the management of simple gastroschisis.

Materials And Methods: An observational, descriptive, retrospective, longitudinal study was carried out. Medical records of patients diagnosed with simple gastroschisis and treated with different surgical techniques -Simil-Exit, primary closure, and deferred closure- were reviewed.

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The dramatic rise in United States (U.S.) deportations demands a deeper understanding of their human costs.

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Background: In vascular tissue, macrophages and inflammatory cells produce the enzyme lipoprotein- associated phospholipase A2 (Lp-PLA2). Treatment with fibrates decreases Lp-PLA2 levels in individuals with obesity and metabolic syndrome; however, these findings have not been fully clarified.

Objective: The goal of this study was to investigate the possible effects of fibrate therapy on Lp-PLA2 mass and activity through a meta-analysis of clinical trials.

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Hydronephrosis and survival in cervical cancer patients: The role of urinary diversion.

Gynecol Oncol Rep

February 2025

Urology Department, Instituto Mexicano del Seguro Social, Unidad de Medicina de Alta Especialidad N° 25, Monterrey, Nuevo León, Mexico.

Objective: We aimed to assess the impact of urinary diversion on survival in patients with advanced cervical cancer (CC) and hydronephrosis. Additionally, we examined the influence of other patient factors and urinary diversion type on survival.

Methods: A retrospective study analyzed survival in cervical cancer (CC) patients with hydronephrosis treated at two Mexican hospitals from 2011 to 2023.

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Background: Culturally appropriate educational materials are necessary to improve health literacy among Indigenous populations. However, practically no such materials have been cross-culturally adapted and validated for Indigenous peoples based on compliance with efficacy components.

Objective: To perform a cross-cultural adaptation and validation of audiovisual educational materials for adult patients with rheumatoid arthritis belonging to Indigenous communities in Chiapas, Mexico.

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