Onofre Muñoz

Use of dried blood samples for monitoring hepatitis B virus infection (2009)

Lira, Rosalia, Maldonado-Rodriguez, Angelica, Rojas-Montes, Othon, Ruiz-Tachiquin, Martha, Torres-Ibarra, Rocio, Cano-Dominguez, Carlos, ...

Abstract Background Hepatitis B virus (HBV) infection is a problem in several regions of the world with limited resources. Blood samples dried on filter paper (DBS) have been successfully used to...

Giardia duodenalis   : analysis of secreted proteases upon trophozoite-epithelial cell interaction in vitro (2006)

Roberto Cedillo-Rivera, Rocío Fonseca-Liñán, Raúl Argüello-García, Onofre Muñoz, Guadalupe Ortega-Pierres, ...

Protease secretion by Giardia duodenalis   trophozoites upon interaction with epithelial cells and its association with the parasite adhesion was studied in co-cultures of parasites with IEC6...

Giardia duodenalis: analysis of secreted proteases upon trophozoite-epithelial cell interaction in vitro (2006)

Rodríguez-Fuentes,Guadalupe Beatriz, Cedillo-Rivera,Roberto, Fonseca-Liñán,Rocío, Argüello-García,Raúl, Muñoz,Onofre, Ortega-Pierres,Guadalupe, ...

Protease secretion by Giardia duodenalis trophozoites upon interaction with epithelial cells and its association with the parasite adhesion was studied in co-cultures of parasites with IEC6...

Estudio seroepidemiológico de borreliosis de Lyme en la Ciudad de México y el noreste de la República Mexicana (2003)

Solórzano Santos, Fortino, Garduño Bautista, Verónica, Tapia-Conyer, Roberto, Muñoz, Onofre, Gordillo-Pérez, Guadalupe, Torres, Javier

Objetivo. Investigar mediante métodos serológicos la infección por B burgdorferi en individuos del Distrito Federal y la zona noreste de México. Material y métodos. Se obtuvo una muestra...

Pragmatic randomized trial of home visits by a nurse to elderly people with hypertension in Mexico (2001)

Garcia-Peña, Carmen, Thorogood, Margaret, Armstrong, Ben, Reyes-Frausto, Sandra, Muñoz, Onofre

Background In Mexico, hypertension is a major cause of disability and death in the elderly, but the most effective way to promote behaviour change in old people is unknown. Low resource interventions...

Detection of furazolidone in human biological fluids by high performance liquid chromatography (1989)

Valadez-Salazar, Alicia, Guiscafre-Gallardo, Hector, Sanchez-Garcia, Salvador, Muñoz, Onofre

Furazolidone has normally been administered as a non-absorbable antimicrobial agent for use in gastrointestinal infections. However, in India and Mexico it has been used successfully for the...

The primary care clinic as a setting for continuing medical education: program description

Pérez-Cuevas, Ricardo, Reyes, Hortensia, Guiscafré, Héctor, Juárez-DÍaz, Norma, Oviedo, Mario, Flores, Sergio, ...

The Mexican Institute of Social Security (IMSS) is Mexico's largest state-financed health care system, providing care to 50 million people. This system comprises 1450 family medicine clinics staffed...

Validation of the String Test for the Recovery of Helicobacter pylori from Gastric Secretions and Correlation of Its Results with Urea Breath Test Results, Serology, and Gastric pH Levels

Torres, Javier, Camorlinga, Margarita, Pérez-Peréz, Guillermo, Gonzalez, Gerardo, Muñoz, Onofre

The efficacy of the string culture test to isolate Helicobacter pylori from gastric secretions of 28 volunteers was studied. With the urea breath test (UBT) as the “gold standard,” the string...

Increasing Multidrug Resistance in Helicobacter pylori Strains Isolated from Children and Adults in Mexico

Torres, Javier, Camorlinga-Ponce, Margarita, Pérez-Pérez, Guillermo, Dehesa, Margarita, González-Valencia, Gerardo, ...

The susceptibilities to three antimicrobials of 195 Helicobacter pylori strains isolated from Mexican patients is reported; 80% of the strains were resistant to metronidazole, 24% were resistant to...

Serotype Specificity of the Neutralizing-Antibody Response Induced by the Individual Surface Proteins of Rotavirus in Natural Infections of Young Children

Menchaca, Griselda, Padilla-Noriega, Luis, Méndez-Toss, Martha, Contreras, Juan F., Puerto, Fernando I., Guiscafré, Hector, ...

The relative contribution of the rotavirus surface proteins, VP4 and VP7, to the induction of homotypic as well as heterotypic neutralizing antibodies (NtAbs) in natural infections was studied. The...

Antigenic and Genomic Diversity of Human Rotavirus VP4 in Two Consecutive Epidemic Seasons in Mexico

Padilla-Noriega, Luis, Méndez-Toss, Martha, Menchaca, Griselda, Contreras, Juan F., Romero-Guido, Pedro, Puerto, Fernando I., ...

In the present investigation we characterized the antigenic diversity of the VP4 and VP7 proteins in 309 and 261 human rotavirus strains isolated during two consecutive epidemic seasons,...

Effects of Toxin A from Clostridium difficile on Mast Cell Activation and Survival

Calderón, Gloria M., Torres-López, Javier, Lin, Tong-Jun, Chavez, Bibiana, Hernández, Manuel, Muñoz, Onofre, ...

Toxins A and B from Clostridium difficile are the main cause of antibiotic-associated diarrhea and pseudomembranous colitis. They cause fluid accumulation, necrosis, and a strong inflammatory...

Specific Serum Immunoglobulin G Response to Urease and CagA Antigens of Helicobacter pylori in Infected Children and Adults in a Country with High Prevalence of Infection

Torres, Javier, Camorlinga-Ponce, Margarita, Perez-Perez, Guillermo, Muñoz, Leopoldo, Muñoz, Onofre

Few studies have analyzed the immune response to Helicobacter pylori CagA and urease antigens across age groups in the same population. The aim of this study was to analyze the serologic...

Rotavirus Diarrhea Severity Is Related to the VP4 Type in Mexican Children

Mota-Hernández, Felipe, José Calva, Juan, Gutiérrez-Camacho, Claudia, Villa-Contreras, Sofía, Arias, Carlos F., Padilla-Noriega, Luis, ...

This report is of a community-based case control study to assess whether the severity of acute diarrhea by rotavirus (RV) in young children is associated with a particular VP7 (G) or VP4 (P) RV...

Prevalence and Genetic Diversity of Human Astroviruses in Mexican Children with Symptomatic and Asymptomatic Infections

Méndez-Toss, Martha, Griffin, Dixie D., Calva, Juan, Contreras, Juan F., Puerto, Fernando I., Mota, Felipe, ...

The prevalence and type diversity of human astroviruses (HAstV) in children with symptomatic and asymptomatic infections were determined in five localities of Mexico. HAstV were detected in 4.6 (24...

Age-Specific Immune Response to HspA in Helicobacter pylori-Positive Persons in Mexico

Eamranond, Peter P., Torres, Javier, Muñoz, Onofre, Pérez-Pérez, Guillermo I.

The immune response to heat shock protein A (HspA) in Helicobacter pylori-positive adults increases with age in developed countries. This response has not been studied with children or in developing...

Lewis Antigen Expression by Helicobacter pylori Strains Colonizing Different Regions of the Stomach of Individual Patients▿

González-Valencia, Gerardo, Muñoz-Perez, Leopoldo, Morales-Espinosa, Rosario, Camorlinga-Ponce, Margarita, Muñoz, Onofre, Torres, Javier

The diversity in the expression of Lewis antigens (Le) of 226 single colonies of Helicobacter pylori isolated from four regions of the stomach of eight adults is shown. Ley was expressed more in...