Evaluation of Helicobacter pylori IgG levels in type 2 diabetes mellitus patients

Abstract

Background. Diabetes mellitus (DM) is a common and debilitating chronic disease with increasing prevalence in the world and in Iran. Helicobacter pylori ( H. pylori ) is a gram-negative bacillus that causes gastritis and peptic ulcer disease and stomach cancer. It is more common in developing countries. Several studies have shown the possible association between H. pylori ifection and DM. We performed this study to evaluate H. pylori infection in type 2 diabetes mellitus (T2DM) patients in comparison to non-diabetic individuals. Methods. In a case-control study 99 T2DM patients (aged 31 to 96 years) who referred to Urmia Imam Khomaini hospital and 96 non-diabetic controls were included. Venous blood samples were received from all participants and fasting blood glucose (FBG), HbA 1c and serum H. pylori IgG levels were measured. For all individuals demographic data, including age, sex and body mass index (BMI) were recorded. H. pylori IgG levels greater than 10 U/ml was considered as H. pylori infection. H. pylori IgG serum levels of all of T2DM patients and control group were compared with each other. Data were analyzed using SPSS version 17. We used independent T-test, Chi-square and Fisher exact test for statistical analysis. The level of significance was considered as p-value < 0.05. Results. Means age of T2DM patients and control group were 59.77 ± 13.25 and 63.43 ± 13.16 years respectively and there was not significant difference between two groups (p = 0.05). Frequency of positive H. pylori serology in T2DM patients was 69.7% and in non-diabetic group was 66.7% and there was not significant difference between two groups in this regard (p = 0.65). Mean ± SE serum H. pylori IgG levels in T2DM and non-diabetic subjects was 45.78 ± 4.82 and 44.35 ± 4.83 U/ml respectively (p = 0.83). Mean HbA 1c level was significantly higher in T2DM patients compared to control group (8.40 ± 2.02 and 5.29 ± 0.45 respectively, p < 0.001). Conclusions. According to the results of this study frequency of H. pylori infection and also serum H. pylori IgG levels in diabetic patients does not differ from non-diabetics subjects.