Journal of Crohn's & colitis · 2015
Diagnosis of Helicobacter Pylori Infection is Associated with Lower Prevalence and Subsequent Incidence of Crohn's Disease.
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Bartels Lars E, Jepsen Peter, Christensen Lisbet A, Gerdes Lars U, Vilstrup Hendrik, Dahlerup Jens F
Аннотация
BACKGROUND AND AIMS: Helicobacter pylori infection may protect against some chronic inflammatory diseases. This study examined H. pylori infection and its association with the prevalence of the gastrointestinal diseases Crohn's disease [CD], ulcerative colitis [UC], and coeliac disease [CeD]. Incident cases in a follow-up period after H. pylori testing were recorded to investigate if protective effects of H. pylori persisted after probable eradication.
METHODS: This was a historical cohort study performed in the Central Denmark Region. Patients were enrolled consecutively from primary health care centres after a urea breath test [UBT] for H. pylori and were then followed for a median of 6 years. The patient's diseases, country of birth, and gender were acquired from nationwide administrative registries. We used logistic regression to compare the prevalences of CD, UC, and CeD and Cox regression to compare the incidences of CD, UC, and CeD between H. pylori-positive and H. pylori-negative patients, adjusting for confounding variables.
RESULTS: We found a lower prevalence of CD in H. pylori-positive than in H. pylori-negative patients (odds ratio = 0.36 [0.17-0.75]). There were fewer incident cases of CD in H. pylori-positive than H. pylori-negative patients in the follow-up period (hazard ratio = 0.59 [0.36-0.96]). Similar trends were found for CeD but not for UC.
CONCLUSIONS: H. pylori infection may be a protective factor against the development of CD. However, the incidence of CD is still reduced after UBT and probable H. pylori eradication; thus, H. pylori status may be a marker for other factors that protect against CD.
METHODS: This was a historical cohort study performed in the Central Denmark Region. Patients were enrolled consecutively from primary health care centres after a urea breath test [UBT] for H. pylori and were then followed for a median of 6 years. The patient's diseases, country of birth, and gender were acquired from nationwide administrative registries. We used logistic regression to compare the prevalences of CD, UC, and CeD and Cox regression to compare the incidences of CD, UC, and CeD between H. pylori-positive and H. pylori-negative patients, adjusting for confounding variables.
RESULTS: We found a lower prevalence of CD in H. pylori-positive than in H. pylori-negative patients (odds ratio = 0.36 [0.17-0.75]). There were fewer incident cases of CD in H. pylori-positive than H. pylori-negative patients in the follow-up period (hazard ratio = 0.59 [0.36-0.96]). Similar trends were found for CeD but not for UC.
CONCLUSIONS: H. pylori infection may be a protective factor against the development of CD. However, the incidence of CD is still reduced after UBT and probable H. pylori eradication; thus, H. pylori status may be a marker for other factors that protect against CD.