[Latin American contribution to the study of Helicobacter pylori].

Unlabelled: We have reviewed Lilacs, PubMed and Google searching for original articles related to Helicobacter pylori published by Latin American investigators from 2003 to 2008. Contributions in the following fields by countries are: Molecular biology: Brasil, Chile, Colombia, Peru y Venezuela.

Epidemiology: Argentina, Brasil, Colombia, Cuba, Peru y Venezuela.

[Helicobacter pylori 25 years after (1983 -2008): epidemiology, microbiology, pathogenics, diagnostics and treatment].

Epidemiology: People have been infected by this bacteria 58,000 years ago. Prevalence of infection varies in different nation. In developing countries infection is acquired in early childhood.

[Helicobacter pylori and gastric cancer].

Since its discovery and identification in gastric tissue by Marshall and Warren in 1983, our knowledge about the effects of Helicobacter pylori infection has grown considerably. Its role in the multifactorial pathology of peptic ulcer disease (gastrodudodenal ulcer disease), gastric adenocarcinoma, and MALT lymphoma is now widely accepted while its involvement in extraintestinal disease is still controversial.The correlation between the colonization of the stomach by H.

Variation in the prevalence of gastric cancer in Perú.

Most cases of gastric cancers occur in non-industrialized countries but there is scarce information about the epidemiology of this illness in these countries. Our study examined whether there was a variation in the prevalence of gastric cancer in Lima, Perú over the last 2 decades. Subjects older than 29 years of age were included.

Decrease in prevalence of peptic ulcer and gastric adenocarcinoma at the Policlínico Peruano Japones, Lima, Peru, between the years 1985 and 2002. Analysis of 31,446 patients.

Aim: To determine the prevalence of peptic ulcer and gastric adenocarcinoma in a population of middle and high socio-economic status in Lima, Peru, between 1985 and 2002.

Material And Methods: The prevalence of gastroduodenal ulcer and gastric adenocarcinoma was determined after studying by esophagogastroduodenoscopy 31,446 patients at the Policlínico Peruano Japonds (PPJ) between 1985 and 2002. All patients had chronic upper gastrointestinal symptoms and had endoscopically proven diagnosis of active peptic ulcer or histological diagnosis of gastric adenocarcinoma.

[Comparison of the prevalence of Helicobacter pylori stomach infection in Peruvian and Japanese population].

Objective: To compare the prevalence of Helicobacter pylori infection in native Peruvians and Japaneses residing in Peru.

Methods: Prospective study carried out at "Policlinico Peruano-Japonés" (Lima-Perú). We included Peruvians and Japaneses residing in Peru with chronic symptoms of the upper gastrointestinal tract.

[Epidemiologic study of Helicobacter pylori infection in Perú].

We present the results of our investigations in the epidemiology of H. pylori infection in Peru during the last two decades. The prevalence of Helicobacter pylori infection in Lima is decreasing in people of middle and high socioeconomic status and continues stationary in people of low socioeconomic status.

[Omeprazole, amoxicillin and clarithromycin in the treatment of helicobacterpylori, in 7 and 10-day regimens].

Aim: The most accepted treatment for infection by Helicobacter pylori is the proton pump inhibitor based therapy with two antibiotics. However, there is no consensus regarding the duration. The purpose here was to compare eradication percentages in the omeprazole+amoxicillin+clarithromycin regimen administered during 7 days versus 10 days and confront the results with a previous 14-day* experience in Peru.

[Changes in the prevalence of H. pylori in Perú; during the 1985-2002 period in medium and upper socio-economic strata].

Introduction: In the developed countries, the prevalence of infection by H. Pylori among patients with active chronic gastritis (ACG) and peptic ulcer is diminishing. In developing countries, as far as it is known, neither a time variation of this infection nor a related epidemiological phenomena have been reported.

[CONTRIBUTION STUDY TO THE EPIDEMIOLOGY OF HELICOBACTERPYLORI IN PERU: ANALYSIS OF 3005 CASES].

Compiling our observations from the last 15 years in regard to the epidemiology of Helicobacter pylori in Perú, we have analized 3005 cases. Studying and comparing the rates of infection among japanese inmigrants living in Perú for more than 10 years, niseis, japanese visitors and peruvians, we found similar rates. According to these results it seems that at least in japaneses there is not any genetic predisposition to acquire the infection.

[HELICOBACTER PYLORI, CHRONIC GASTRITIS, GASTRIC ANDDUODENAL ULCER: STUDY OF 1638 PATIENTS].

We anaylize in patients from high socio economic level the histologic findings of biopsies from the gastric mucosa taken endoscopically. Patients with upper gastrointestinal symptoms were examined with esophagogastroduodenoscopy. In the histologic study we considered: presence of Helicobacter pylori, mucinous damage, displasia, atrophy and intestinal metaplasia.