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Helicobacter pylori infection and hypochlorhydria in Zambian adults and children: A secondary data analysis
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Helicobacter pylori infection and hypochlorhydria in Zambian adults and children: A secondary data analysis
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Journal Article
Helicobacter pylori infection and hypochlorhydria in Zambian adults and children: A secondary data analysis
2021
Overview
Hypochlorhydria (gastric pH >4) increases susceptibility to diarrhoea, iron deficiency, and gastric cancer. We sought to clarify the prevalence of this condition and its predisposing factors in Zambia by pooling data from previous studies conducted in hospital and community settings.
Gastric pH was measured in participants from five separate studies by collecting gastric aspirate from fasted adults and children under 3 years of age undergoing gastroscopy. Gastric pH was correlated with serological testing for Human Immunodeficiency Virus (HIV) and Helicobacter pylori (H. pylori) infections.
We studied 597 individuals (487 adults and 110 children). Hypochlorhydria was present in 53% of adults and 31% of children. HIV infection was detected in 41% of adults and 11% of children. H. pylori serology was available for 366 individuals: 93% of adults and 6% of children were seropositive. In univariate analysis, hypochlorhydria was significantly associated with HIV seropositivity (OR 1.7; 95% CI 1.2-2.4; p = 0.004) and H. pylori antibody seropositivity (OR 4.9; 95% CI 2.8-8.6; p<0.0001), and with advancing age in HIV negative individuals (p = 0.0001). In multivariable analysis, only H. pylori was associated with hypochlorhydria (OR 4.0; 95% CI 2.2-7.2; p<0.0001) while excluding possible exposure to proton pump inhibitors.
Hypochlorhydria is common in our population, with H. pylori being the dominant factor. Only young HIV seronegative individuals had a low prevalence of hypochlorhydria. This may have implications for the risk of other health conditions including gastric cancer.
Publisher
Public Library of Science,Public Library of Science (PLoS)
Subject
/ Adult
/ Adults
/ Aged
/ Anemia
/ Cancer
/ Child
/ Children
/ Complications and side effects
/ Consent
/ Diarrhea
/ Female
/ Helicobacter Infections - epidemiology
/ Helicobacter Infections - metabolism
/ Helicobacter Infections - microbiology
/ Helicobacter Infections - pathology
/ Helicobacter pylori - metabolism
/ Helicobacter pylori - pathogenicity
/ HIV
/ HIV Infections - epidemiology
/ Human immunodeficiency virus
/ Humans
/ Infant
/ Male
/ Medicine
/ Medicine and Health Sciences
/ Serology
/ Stomach Neoplasms - epidemiology
/ Stomach Neoplasms - metabolism
/ Stomach Neoplasms - virology
/ Viruses
