SURVEY, ISOLATION, BIOCHEMICAL CHARACTERIZATION, AND IDENTIFICATION OF HELICOBACTER PYLORI FROM GASTRIC PATIENT BIOPSY
Keywords:Helicobacter pylori, Gastric patient, Biopsy, Gram
Objective: This study was to isolate and identify the Helicobacter pylori from the biopsy samples of the gastric patient.
Methods: Gastric biopsies were collected from the antral region of the gastric patient. Out of 96 patients, 59 males and 37 females in the age group between 11 and 70 years old were selected. A serial dilution of the sample was made. The bacterial colonies were examined on the basis of Gram staining, colony morphology, and biochemical reactions such as catalase, urease, oxidase, nitrate reduction, glycine utilization, growth (different media, different temperature, and salt tolerance), and antibiotic sensitivity
Result: From the findings, it was found that 75% (65% of male and 35% of female) have H. pylori infection remaining 25% were not infected. The rate of infection was found to be more in age group 55-65 and less in age group below 25. Among 75% of H. pylori infected patients, 72% are affected with ulcer, 19% with gastric cancer, and 8.3% found to be non-gastric inflammated. Gram staining result declared that the isolated bacteria from the biopsy sample observed to be Gram-negative, spiral shaped rod. Biochemical reports produced positive indication to all the tests.
Conclusion: Based on the morphological, staining and biochemical test result, it was confirmed that the isolated bacteria was found to be H. pylori.Gastric cancer is the fourth most common cancer and the second leading cause of cancer-related to death worldwide. In 1994, the international agencyfor research on cancer classified H. pylori as a Class I (definite) carcinogen, as H. pylori infection is considered as an important trigger in the processof carcinogenesis of both types of distal gastric cancer.
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