Olga L. Valenzuela

ORCID: 0000-0002-8741-0760
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About
Contact & Profiles
Research Areas
  • Arsenic contamination and mitigation
  • Heavy Metal Exposure and Toxicity
  • Retinoids in leukemia and cellular processes
  • Health and Lifestyle Studies
  • Dye analysis and toxicity
  • Indigenous Health and Education
  • Air Quality and Health Impacts
  • Birth, Development, and Health
  • Occupational and environmental lung diseases
  • Mental Health Research Topics
  • Maternal and Neonatal Healthcare
  • Pregnancy and preeclampsia studies
  • Genomics, phytochemicals, and oxidative stress
  • Environmental Justice and Health Disparities
  • Neurotransmitter Receptor Influence on Behavior
  • Sepsis Diagnosis and Treatment
  • Stress Responses and Cortisol
  • Advances in Cucurbitaceae Research
  • Carcinogens and Genotoxicity Assessment
  • Natural Antidiabetic Agents Studies
  • Electrospun Nanofibers in Biomedical Applications
  • Neonatal and Maternal Infections
  • Nutritional Studies and Diet
  • Treatment of Major Depression
  • Gestational Diabetes Research and Management

Universidad Veracruzana
2014-2024

Instituto Politécnico Nacional
2004-2019

Center for Research and Advanced Studies of the National Polytechnic Institute
2004-2019

Chronic exposure to inorganic arsenic (iAs) has been associated with increased risk of various forms cancer and noncancerous diseases. Metabolic conversions iAs that yield highly toxic genotoxic methylarsonite (MAsIII) dimethylarsinite (DMAsIII) may play a significant role in determining the extent character cancer-promoting effects exposure. In this study we examined relationship between urinary profiles MAsIII DMAsIII skin lesion markers toxicity individuals exposed drinking water. The...

10.1289/ehp.7519 article EN public-domain Environmental Health Perspectives 2004-11-22

Abstract Background Human exposures to inorganic arsenic (iAs) have been linked an increased risk of diabetes mellitus. Recent laboratory studies showed that methylated trivalent metabolites iAs may play key roles in the diabetogenic effects iAs. Our study examined associations between chronic exposure drinking water, metabolism iAs, and prevalence arsenicosis-endemic areas Mexico. Methods We used fasting blood glucose (FBG), plasma insulin (FPI), oral tolerance test (OGTT), glycated...

10.1186/1476-069x-10-73 article EN cc-by Environmental Health 2011-08-24

The concentration of arsenic in urine has been used as a marker exposure to inorganic As (iAs). Relative proportions urinary metabolites iAs have identified potential biomarkers susceptibility toxicity. However, the adverse effects are ultimately determined by concentrations target tissues.In this study we examined feasibility analyzing species cells that originate bladder, organ for As-induced cancer humans.Exfoliated bladder epithelial (BECs) were collected from 21 residents Zimapan,...

10.1289/ehp.11503 article EN public-domain Environmental Health Perspectives 2008-07-16

Inorganic arsenic (iAs) exposure has been associated with the increased risk of various forms cancer and non-cancerous diseases. Metabolic conversions iAs that yield highly toxic genotoxic methylarsonite (MAsIII) dimethylarsinite (DMAsIII) may play a significant role in determining extent character cancer-promoting effects exposure. However, vivo research involving production MAsIII DMAsIII remains an area ongoing investigation debate. The results metabolic toxicity studies using mice have...

10.3109/15376516.2011.603765 article EN Toxicology Mechanisms and Methods 2011-10-17

Inorganic arsenic (iAs) is an important pollutant associated with various chronic-degenerative diseases. The cytoprotective protein nuclear factor erythroid 2-related (NRF2) has been proposed as responsive mechanism against iAs exposure. aim of this study was to determine whether the risk skin lesions in people exposed iAs-contaminated water could be modified by presence single nucleotide polymorphisms NRF2 coding gene. We studied 117 individuals long-term exposure and 120 nonexposed...

10.1177/0960327113506234 article EN Human & Experimental Toxicology 2013-10-09

Background: The prevalence of anxiety and depression in young students is associated with biosocial factors scholastic stress. However, few studies have evaluated emotional-affective symptoms that are related to the immune system antioxidant parameters individuals without diagnoses affective disorders. Aim: This study aims assess relationship between glutathione concentrations CD4 CD8 lymphocyte counts college students. Methods: College (n = 177) completed standardized psychometric...

10.3389/fpsyg.2021.666347 article EN cc-by Frontiers in Psychology 2022-01-05

The study was aimed at determining the prevalence of overweight and obesity in indigenous nahuas from Ixtaczoquitlán, Veracruz, Mexico. For this purpose, a cross-cut conducted between 2010 2011, which body mass index (BMI) calculated. To define obesity, categories World Health Organization (WHO) Mexican Official Standard (NOM, Spanish acronym) were used. 227 (77,5% women) included. According to WHO’s guidelines, rate for among 41%, 36.5% obesity; according NOM, it 11.4 69.2% respectively. In...

10.17843/rpmesp.2012.293.367 article EN cc-by-nc Revista Peruana de Medicina Experimental y Salud Pública 2014-02-03

Introduction: nutrient and trace element deficiency are risk factors for the development of preeclampsia; these nutrients induce changes in hematologic state, which can be used to prevent complications during pregnancy. Objective: this research will analyze nutritional hematological status 3 trimesters gestation pregnant women with preeclampsia evaluate its association gestational alterations. Method: a cross-sectional, descriptive, analytic study was conducted on 78 who attended prenatal...

10.20960/nh.04110 article ES cc-by-nc-sa Nutrición Hospitalaria 2022-01-01

Neonatal Sepsis (NS) is a systemic infection caused by bacteria, fungi, or viruses during the first month of life. Although various studies have identified factors associated with NS, it public health problem due to its high morbidity and mortality. The study aimed identify risk neonatal sepsis in Intensive Care Unit (NICU) tertiary hospital Mexico. A case-control was carried out using records neonates (with 39 without 39) from January December 2017. studied were sociodemographic clinical...

10.37871/jbres1370 article EN Journal of Biomedical Research & Environmental Sciences 2021-12-01
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