Infection with CagA+ Helicobacter pylori strains as a possible predictor of risk in the development of gastric adenocarcinoma in MexicoJ Torres
Unidad de Investigación Médica en Enfermedades Infecciosas, Hospital de Pediatria, Instituto Mexicano del Seguro Social, Mexico City, DF
Int J Cancer 78:298-300. 1998
..These results support the possible role of CagA(+) status as predictor of risk for gastric adenocarcinoma in Mexico; this is in agreement with results in European and American populations, but contrary to studies in some Asian countries...
- A community-based seroepidemiologic study of Helicobacter pylori infection in Mexico
J Torres
Unidad de Investigación Médica en Enfermedades Infecciosas, Instituto Mexicano del Seguro Social, Mexico City, Mexico
J Infect Dis 178:1089-94. 1998
..42), and low socioeconomic level (OR, 1.43) were risk factors for infection. Prevalence was similar in urban and in rural communities (OR, 0.95). This study is the largest community-based seroepidemiologic study of H. pylori to date...
Increasing multidrug resistance in Helicobacter pylori strains isolated from children and adults in MexicoJ Torres
Unidad de Investigación Médica en Enfermedades Infecciosas, Instituto Mexicano del Seguro Social, Centro Medico Nacional Siglo XXI, Mexico City, Mexico
J Clin Microbiol 39:2677-80. 2001
..Resistance to two or more antimicrobials increased significantly from 1995 to 1997...
- 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
J Torres
Unidad de Investigacion en Enfermedades Infecciosas, Coordinación de Investigación, IMSS, Mexico City, Mexico
J Clin Microbiol 39:1650-1. 2001
..The results of string culture did not correlate with the UBT results, with serum antibody levels, or with the pH levels of gastric secretions...
- A comparison of Lewis x and Lewis y expression in Helicobacter pylori obtained from children and adults
L Munoz
Unidad de Investigacion en Enfermedades Infecciosas, Hospital de Pediatria, Instituto Mexicano del Seguro Social, Mexico City, Mexico
J Infect Dis 183:1147-51. 2001
..01). A trend analysis showed a significant decline in frequency of clones expressing Le(x) with age (P=.021). In this community, expression of Le antigens differs in H. pylori isolates obtained from children versus adults...
- A comprehensive review of the natural history of Helicobacter pylori infection in children
J Torres
Unidad de Investigación Médica en Enfermedades Infecciosas, Centro Medico Nacional Siglo XXI, Instituto Mexicano del Seguro Social IMSS, Mexico City, Mexico
Arch Med Res 31:431-69. 2000
..pylori-infected children need to be established. Multicenter pediatric studies should focus on the identification of risk factors, which can be used as prognostic indicators for the development of gastroduodenal disease later in life...
- Hepatitis C virus RNA (HCV-RNA) in blood donors and family members seropositive for anti-HCV antibodies
M T Alvarez-Muñoz
Unidad de Investigacion Medica en Enfermedades Infecciosas y Parasitarias, Hospital de Pediatria, Centro Medico Nacional Siglo XXI CMN SXXI, Instituto Mexicano del Seguro Social IMSS, Mexico City, Mexico
Arch Med Res 32:442-5. 2001
..The aim of this work was to determine hepatitis C virus RNA (HCV-RNA) in a group of blood donors and their household contacts. Serotype and genotype of the isolates were also studied...
- Immune and proliferative cellular responses to Helicobacter pylori infection in the gastric mucosa of Mexican children
Leopoldo Munoz
Unidad de Investigacion en Enfermedades Infecciosas, Hospital de Pediatria, CMN SXXI, Instituto Mexicano del Seguro Social, Mexico City, Mexico
Helicobacter 12:224-30. 2007
..Mexico has a high H. pylori prevalence in children, but a low risk of gastric cancer. The aim of this work was to study the cellular responses of the gastric mucosa to this infection in Mexican children...
Demonstration of Borrelia burgdorferi sensu stricto infection in ticks from the northeast of MexicoG Gordillo-Pérez
Unidad de Investigación Médica en Enfermedades Infecciosas, Hospital de Pediatria, Centro Medico Nacional SXXI IMSS, Mexico City, Mexico
Clin Microbiol Infect 15:496-8. 2009
..burgdorferi sensu stricto. These findings, together with reports of indigenous cases, fulfil the criteria that allow northeastern Mexico to be considered as a zone endemic for Lyme disease...
- The primary care clinic as a setting for continuing medical education: program description
R Perez-Cuevas
Epidemiological Investigation and Health Services Research Unit, Mexican Institute of Social Security, Mexico City, Mexico
CMAJ 163:1295-9. 2000
..The effectiveness and sustainability of the strategy should be measured through an evaluative study...
- Antimicrobial resistance from enterococci in a pediatric hospital. Plasmids in Enterococcus faecalis isolates with high-level gentamicin and streptomycin resistance
G Miranda
Unidad de Investigación en Epidemiología Hospitalaria, Hospital de Pediatria, Centro Medico Nacional Siglo XXI, Instituto Mexicano del Seguro Social IMSS, Mexico City, Mexico
Arch Med Res 32:159-63. 2001
..Our objective in this study was to report the frequency of antimicrobial resistance in enterococci and to determine the characteristics of high-level gentamicin resistance (HLGR) plasmids in Enterococcus faecalis clinical isolates...
- Evaluation of albendazole prodrugs in experimental trichinellosis
L Yepez-Mulia
Unidad de Investigacion Medica en Enfermedades Infecciosas y Parasitarias, Hospital de Pediatria, Instituto Mexicano del Seguro Social, Mexico, D F, Mexico
Arch Med Res 30:368-74. 1999
..These compounds showed greater solubility than ABZ itself...
