Fatemeh Keshavarzi

Department of Biology, Sanandaj Branch, Islamic Azad University, Sanandaj, Iran

[ 1 ] - The Prevalence of H. Pylori cagA Gene in Patients with Gastric Ulcer

Background and Objective: Helicobacter Pylori (H. pylori) is one of the reasons for the gastric inflammation and peptic ulcers. It is a predisposing factor of gastric adenocarcinoma. Cytotoxin A encoded by the cagA gene is one of the major virulence factors in bacterial pathogenicity, which is of special importance due to genetic diversity in different geographical areas. The purpose of this st...

[ 2 ] - Optimal Conditions for Extraction and Purification of Penicillinase Enzyme

Background and Objective: The present study aimed to evaluate the optimum conditions for extracting and purifying penicillinase enzyme. The enzyme source was Bacillus licheniformis 6346 obtained from the Iranian Research Organization for Science and Technology. Materials and Methods: B. licheniformis was cultured in a medium containing mineral salts, nitrogen compounds, and cultured carbon sou...