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https://www.readbyqxmd.com/read/29236788/aflatoxin-and-viral-hepatitis-exposures-in-guatemala-molecular-biomarkers-reveal-a-unique-profile-of-risk-factors-in-a-region-of-high-liver-cancer-incidence
#1
Joshua W Smith, Maria F Kroker-Lobos, Mariana Lazo, Alvaro Rivera-Andrade, Patricia A Egner, Heiner Wedemeyer, Olga Torres, Neal D Freedman, Katherine A McGlynn, Eliseo Guallar, John D Groopman, Manuel Ramirez-Zea
Liver cancer is an emerging global health issue, with rising incidence in both the United States and the economically developing world. Although Guatemala experiences the highest rates of this disease in the Western hemisphere and a unique 1:1 distribution in men and women, few studies have focused on this population. Thus, we determined the prevalence and correlates of aflatoxin B1 (AFB1) exposure and hepatitis virus infection in Guatemalan adults. Healthy men and women aged ≥40 years (n = 461), residing in five departments of Guatemala, were enrolled in a cross-sectional study from May-October of 2016...
2017: PloS One
https://www.readbyqxmd.com/read/29217368/hla-g-a-haplotypes-in-amerindians-ecuador-hla-g%C3%A2-01-05n-world-distribution
#2
Antonio Arnaiz-Villena, Jose Palacio-Gruber, Mercedes Enriquez de Salamanca, Ignacio Juárez, Cristina Campos, Jorge Nuñez, Ester Muñiz, Jose Manuel Martin-Villa
HLA-G and HLA-A frequencies have been analysed in Amerindians from Ecuador. HLA-G allele frequencies are found to be closer to those of other Amerindians (Mayas from Guatemala and Uros from Peru) and closer to European ones than to Far East Asians groups, particularly, regarding to HLA-G∗ 01:04 allele. HLA-G/-A haplotypes have been calculated for the first time in Amerindians. It is remarkable that HLA-G∗01:05N "null" allele is found in a very low frequency (like in Amerindian Mayas and Uros) and is also found in haplotypes belonging to the HLA-A19 group of alleles (HLA-A∗30, -A∗31,-A∗33)...
December 4, 2017: Human Immunology
https://www.readbyqxmd.com/read/29206825/clinical-competence-of-guatemalan-and-mexican-physicians-for-family-dysfunction-management
#3
Carlos Enrique Cabrera-Pivaral, María de Jesús Orozco-Valerio, Alfredo Celis-de la Rosa, María de Los Ángeles Covarrubias-Bermúdez, Marco Antonio Zavala-González
OBJECTIVE: To evaluate the clinical competence of Mexican and Guatemalan physicians to management the family dysfunction. METHODS: Cross comparative study in four care units first in Guadalajara, Mexico, and four in Guatemala, Guatemala, based on a purposeful sampling, involving 117 and 100 physicians, respectively. Clinical competence evaluated by validated instrument integrated for 187 items. Non-parametric descriptive and inferential statistical analysis was performed...
November 2017: Gaceta Médica de México
https://www.readbyqxmd.com/read/29202900/food-allergen-labeling-a-latin-american-approach
#4
Maria Cristina Lopez
Food allergy is a public health concern almost all over the world. Although most of the countries that regulate the declaration of allergens in prepackaged foods include the list recommended by the Codex Alimentarius, some countries have added other allergens to this list due to prevalence data and regional incidence, whereas others have incorporated exceptions for some products derived from allergenic foods. Within this context, the situation in Latin America regarding these regulations is diverse. Data about prevalence of food hypersensitivity are very limited in the region...
December 5, 2017: Journal of AOAC International
https://www.readbyqxmd.com/read/29177386/-klebsiella-pneumoniae-new-delhi-metalo-lactamase-in-a-peruvian-national-hospital
#5
Cristhian Resurrección-Delgado, Juan José Montenegro-Idrogo, Alfredo Chiappe-Gonzalez, Renzo Vargas-Gonzales, Carolina Cucho-Espinoza, Dick Henry Mamani-Condori, Luz María Huaroto-Valdivia
The emergence of Enterobacteria producing carbapenemases of type New Delhi Metalo beta-lactamases (NDM), >represent, today, a real problem of world public health. The presence of this resistance mechanism limits or nullifies the therapeutic options to combat these bacteria. In Latin America, the figures are getting higher, as they are reported in Guatemala, Colombia, Chile, Argentina, among others. Peru has not, to date, described the presence of this resistance pattern; however for several years it has been presumed to exist...
April 2017: Revista Peruana de Medicina Experimental y Salud Pública
https://www.readbyqxmd.com/read/29164473/clinicopathological-and-immunohistochemical-study-of-head-and-neck-langerhans-cell-histiocytosis-from-latin-america
#6
Natália Rocha Bedran, Román Carlos, Bruno Augusto Benevenuto de Andrade, Ana Paula Silva Bueno, Mário José Romañach, Cristiane Bedran Milito
Langerhans cell histiocytosis (LCH) is an inflammatory myeloid neoplastic proliferation with variable clinical behavior caused by the accumulation of CD1a(+)/CD207(+) histiocytes, associated with a variable number of eosinophils, lymphocytes, plasma cells and multinucleated giant cells, most commonly observed in male children. LCH is uncommon in the head and neck region, occurring as ulcerated and reddened plaques or nodules that cause destruction of adjacent soft tissues and bone. The exact etiology of LCH is still unknown and controversial, with possible etiologic role of viruses, including Epstein-Barr virus (EBV)...
November 21, 2017: Head and Neck Pathology
https://www.readbyqxmd.com/read/29161486/-phylogenetic-signal-at-the-cytb-sertrna-ig1-nd1-mitochondrial-region-in-anopheles-kerteszia-neivai-howard-dyar-knab-1913
#7
Andrés López-Rubio, Juan David Suaza, Charles Porter, Sandra Uribe, Gabriel Bedoya, Iván Darío Vélez
INTRODUCTION: Mitochondrial DNA has proven its utility for the study of insect evolution. Genes such as cytochrome b (Cytb) and the transfer gene for serine (SertRNA) can be used to compare closely related organisms. OBJECTIVE: The phylogenetic utility of Cytb-SertRNA-IG1-ND1 was tested for polymorphisms, and secondary structure modeling in SertRNA was done to detect possible cryptic species in Anopheles neivai. MATERIALS AND METHODS: Specimens from Colombia, Guatemala, and the type locality in Panamá were collected and sequenced for specimen comparison based on DNA polymorphisms, and secondary structure modeling for the SertRNA gene...
March 29, 2017: Biomédica: Revista del Instituto Nacional de Salud
https://www.readbyqxmd.com/read/29143849/water-system-unreliability-and-diarrhea-incidence-among-children-in-guatemala
#8
Jennifer Trudeau, Anna-Maria Aksan, William F Vásquez
OBJECTIVES: This article examines the effect of water system unreliability on diarrhea incidence among children aged 0-5 in Guatemala. METHODS: We use secondary data from a nationally representative sample of 7579 children to estimate the effects of uninterrupted and interrupted water services on diarrhea incidence. The national scope of this study imposes some methodological challenges due to unobserved geographical heterogeneity. To address this issue, we estimate mixed-effects logit models that control for unobserved heterogeneity by estimating random effects of selected covariates that can vary across geographical areas (i...
November 16, 2017: International Journal of Public Health
https://www.readbyqxmd.com/read/29143691/health-claims-and-product-endorsements-on-child-oriented-beverages-in-guatemala
#9
Andrew Perry, Violeta Chacon, Joaquin Barnoya
OBJECTIVE: We sought to describe front-of-package marketing strategies and nutritional quality of child-oriented beverages in Guatemala. DESIGN: We purchased all child-oriented ready-to-drink fruit drinks, milks and carbonated beverages in three convenience stores and one supermarket in Guatemala City. Front-of-package marketing was defined as the presence of spokes-characters, cartoons, celebrities, or health-related images, words, claims or endorsements on beverage packaging...
November 16, 2017: Public Health Nutrition
https://www.readbyqxmd.com/read/29142991/a-patient-navigation-system-to-minimize-barriers-for-peritoneal-dialysis-in-rural-low-resource-settings-case-study-from-guatemala
#10
David C Flood, Anita N Chary, Kirsten Austad, Pablo Garcia, Peter J Rohloff
No abstract text is available yet for this article.
July 2017: KI Reports
https://www.readbyqxmd.com/read/29139138/folate-status-in-women-of-reproductive-age-as-basis-of-neural-tube-defect-risk-assessment
#11
Lynn B Bailey, Dorothy B Hausman
Reliable folate status data for women of reproductive age (WRA) to assess global risk for neural tube defects (NTDs) are needed. We focus on a recent recommendation by the World Health Organization that a specific "optimal" red blood cell (RBC) folate concentration be used as the sole indicator of NTD risk within a population and discuss how to best apply this guidance to reach the goal of assessing NTD risk globally. We also emphasize the importance of using the microbiologic assay (MBA) as the most reliable assay for obtaining comparable results for RBC folate concentration across time and countries, the need for harmonization of the MBA through use of consistent key reagents and procedures within laboratories, and the requirement to apply assay-matched cutoffs for folate deficiency and insufficiency...
November 15, 2017: Annals of the New York Academy of Sciences
https://www.readbyqxmd.com/read/29139030/potential-risk-factors-for-reactive-arthritis-and-persistence-of-symptoms-at-2%C3%A2-years-a-case-control-study-with-longitudinal-follow-up
#12
Helga Raquel Garcia Ferrer, Alexander Azan, Isa Iraheta, Joan Von Feldt, Luis R Espinoza, Julia Manasson, Jose U Scher, Abraham Garcia Kutzbach, Alexis Ogdie
The objective of the study is to determine the risk factors for the development of reactive arthritis (ReA) and examine the factors associated with the persistence of symptoms. Patients with a new diagnosis of ReA and controls with a gastrointestinal (GI), urogenital, or sexually transmitted infection in the 3-6 months prior to study entry were prospectively enrolled in Guatemala City. ReA patients fulfilled the Assessment in Spondyloarthritis International Society criteria for peripheral spondyloarthropathy (SpA)...
November 14, 2017: Clinical Rheumatology
https://www.readbyqxmd.com/read/29138128/will-participatory-syndromic-surveillance-work-in-latin-america-piloting-a-mobile-approach-to-crowdsource-influenza-like-illness-data-in-guatemala
#13
José Tomás Prieto, Jorge H Jara, Juan Pablo Alvis, Luis R Furlan, Christian Travis Murray, Judith Garcia, Pierre-Jean Benghozi, Susan Cornelia Kaydos-Daniels
BACKGROUND: In many Latin American countries, official influenza reports are neither timely nor complete, and surveillance of influenza-like illness (ILI) remains thin in consistency and precision. Public participation with mobile technology may offer new ways of identifying nonmedically attended cases and reduce reporting delays, but no published studies to date have assessed the viability of ILI surveillance with mobile tools in Latin America. We implemented and assessed an ILI-tailored mobile health (mHealth) participatory reporting system...
November 14, 2017: JMIR Public Health and Surveillance
https://www.readbyqxmd.com/read/29135974/early-meteorological-records-from-latin-america-and-the-caribbean-during-the-18th-and-19th-centuries
#14
Fernando Domínguez-Castro, José Manuel Vaquero, María Cruz Gallego, Ana María Marín Farrona, Juan Carlos Antuña-Marrero, Erika Elizabeth Cevallos, Ricardo García Herrera, Cristina de la Guía, Raúl David Mejía, José Manuel Naranjo, María Del Rosario Prieto, Luis Enrique Ramos Guadalupe, Lizardo Seiner, Ricardo Machado Trigo, Marcos Villacís
This paper provides early instrumental data recovered for 20 countries of Latin-America and the Caribbean (Argentina, Bahamas, Belize, Brazil, British Guiana, Chile, Colombia, Costa Rica, Cuba, Ecuador, France (Martinique and Guadalupe), Guatemala, Jamaica, Mexico, Nicaragua, Panama, Peru, Puerto Rico, El Salvador and Suriname) during the 18th and 19th centuries. The main meteorological variables retrieved were air temperature, atmospheric pressure, and precipitation, but other variables, such as humidity, wind direction, and state of the sky were retrieved when possible...
November 14, 2017: Scientific Data
https://www.readbyqxmd.com/read/29132403/the-interplay-of-demography-and-selection-during-maize-domestication-and-expansion
#15
Li Wang, Timothy M Beissinger, Anne Lorant, Claudia Ross-Ibarra, Jeffrey Ross-Ibarra, Matthew B Hufford
BACKGROUND: The history of maize has been characterized by major demographic events, including population size changes associated with domestication and range expansion, and gene flow with wild relatives. The interplay between demographic history and selection has shaped diversity across maize populations and genomes. RESULTS: We investigate these processes using high-depth resequencing data from 31 maize landraces spanning the pre-Columbian distribution of maize, and four wild teosinte individuals (Zea mays ssp...
November 13, 2017: Genome Biology
https://www.readbyqxmd.com/read/29130346/chemical-composition-and-evaluation-of-antinociceptive-activity-of-the-essential-oil-of-stevia-serrata-cav-from-guatemala
#16
Daniel Luiz Reis Simas, Max Samuel Mérida-Reyes, Manuel Alejandro Muñoz-Wug, Millena Santos Cordeiro, Thais Biondino Sardella Giorno, Edwin Adolfo Taracena, Bessie Evelyn Oliva-Hernández, José Vicente Martínez-Arévalo, Patricia Dias Fernandes, Juan Francisco Pérez-Sabino, Antonio Jorge Ribeiro da Silva
The composition and the antinociceptive activity of the essential oil of Stevia serrata Cav. from a population located in the west highlands of Guatemala were evaluated. A yield of 0.2% (w/w) of essential oil was obtained by hydrodistillation of the dried aerial parts of the plant. The essential oil analysed by GC-FID and GC-MS showed a high content of sesquiterpenoids, with chamazulene (60.1%) as the major component and 91.5% of the essential oil composition was identified. To evaluate antinociceptive activity in mice, the essential oil of S...
November 13, 2017: Natural Product Research
https://www.readbyqxmd.com/read/29122738/performance-of-a-mobile-phone-app-based-participatory-syndromic-surveillance-system-for-acute-febrile-illness-and-acute-gastroenteritis-in-rural-guatemala
#17
Daniel Olson, Molly Lamb, Maria Renee Lopez, Kathryn Colborn, Alejandra Paniagua-Avila, Alma Zacarias, Ricardo Zambrano-Perilla, Sergio Ricardo Rodríguez-Castro, Celia Cordon-Rosales, Edwin Jose Asturias
BACKGROUND: With their increasing availability in resource-limited settings, mobile phones may provide an important tool for participatory syndromic surveillance, in which users provide symptom data directly into a centralized database. OBJECTIVE: We studied the performance of a mobile phone app-based participatory syndromic surveillance system for collecting syndromic data (acute febrile illness and acute gastroenteritis) to detect dengue virus and norovirus on a cohort of children living in a low-resource and rural area of Guatemala...
November 9, 2017: Journal of Medical Internet Research
https://www.readbyqxmd.com/read/29095512/through-the-eyes-of-children-drawings-as-an-evaluation-tool-for-children-s-understanding-about-endangered-mexican-primates
#18
Montserrat Franquesa-Soler, Juan Carlos Serio-Silva
This study seeks to understand children's perceptions and knowledge of endangered Mexican primates. The black howler monkey (Alouatta pigra) is a charismatic species endemic to Southern Mexico, Northern Belize, and Guatemala and is a symbol of the region that fosters a sense of local pride. Therefore, it can be considered a flagship species for the forests of Southern Mexico. We evaluated the perception and knowledge that 297 Mexican elementary school children (8-10 years old) have about black howler monkeys...
November 2, 2017: American Journal of Primatology
https://www.readbyqxmd.com/read/29094456/a-prospective-cause-of-death-classification-system-for-maternal-deaths-in-low-and-middle-income-countries-results-from-the-global-network-maternal-newborn-health-registry
#19
Omrana Pasha, Elizabeth M McClure, Sarah Saleem, Shiyam Sunder, Adrien Lokangaka, Antoinette Tshefu, Carl L Bose, Melissa Bauserman, Musaku Mwenechanya, Elwyn Chomba, Waldemar A Carlo, Ana L Garces, Lester Figueroa, K Michael Hambidge, Nancy F Krebs, Shivaprasad Goudar, Bhalachandra S Kodkany, Sangappa Dhaded, Richard J Derman, Archana Patel, Patricia L Hibberd, Fabian Esamai, Constance Tenge, Edward A Liechty, Janet L Moore, Dennis D Wallace, Marion Koso-Thomas, Menachem Miodovnik, Robert L Goldenberg
OBJECTIVE: To describe the causes of maternal death in a population-based cohort in six low and middle-income countries using a standardized, hierarchical, algorithmic cause of death (COD) methodology. DESIGN: A population-based, prospective observational study. SETTING: Seven sites in six low-middle income countries including the Democratic Republic of the Congo (DRC), Guatemala, India (2), Kenya, Pakistan and Zambia. POPULATION: All deaths amongst pregnant women resident in the study sites from 2014 to December 2016...
November 1, 2017: BJOG: An International Journal of Obstetrics and Gynaecology
https://www.readbyqxmd.com/read/29094082/acceptability-of-human-papillomavirus-self-sampling-for-cervical-cancer-screening-in-an-indigenous-community-in-guatemala
#20
Anna Gottschlich, Alvaro Rivera-Andrade, Edwin Grajeda, Christian Alvarez, Carlos Mendoza Montano, Rafael Meza
Purpose: Cervical cancer rates in Latin America are higher than those in developed countries, likely because of the lower prevalence of screening. Specifically, less than 40% of women in Guatemala are regularly screened and even fewer women are screened in indigenous communities. Current screening strategies-Pap smears and visual inspection with acetic acid-might not be the most effective methods for controlling cancer in these settings. We thus investigated the potential of self-collection of cervical samples with testing for human papillomavirus (HPV) to help prevent cervical cancer in an indigenous community in Guatemala...
October 2017: Journal of Global Oncology
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