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Articles by Amir Masoud Jafari
Total Records ( 2 ) for Amir Masoud Jafari
  Hossein Khedmat , Mohsen Amini , Amir Masoud Jafari , Farhad Nasiri Afshar and Morteza Izadi
  In the present study we investigated the existence of duodenal ulcer activity monthly changes and clarify the roles played by gender, age and Helicobacter pylori We performed a hospital based cross sectional study of 939 patients with an incident duodenal ulcer out of 4339 dyspeptic patients from April 2004 to March 2006 in Baqihyatollah University of Medical Sciences, Tehran, Iran. On endoscopy two biopsy specimens were taken from antral gastric greater curvature within approximately 3 cm from the pylorus for rapid urease test. The number of duodenal ulcers and percentage of HP infection with regard to the time of evaluation were analyzed. There was a significance increase in the occurrence of duodenal ulcer in cold period of the year (autumn and winter), (p< 0.0005, χ2 = 18.1), After applying adjustment for age, gender and the year of evaluation, there was Also an increment in the percentage of HP infection in cold period of year in comparison to hot one (spring and summer), (p = 0.009, Odds ratio = 1.6, 95%CI 1.1-2.3). The present findings indicate that the observed duodenal ulcer occurrence increment in some cold months of the year was a manifestation of the cold month`s increments in percentage of HP infection diagnosis in dyspeptic patients who come to our center. For clarification of the biological basis of this phenomenon, further studies, including the interactions of climate, HP and neuroendocrine transmitters and usage of a reliable diagnostic method capable of distinguishing recent from old HP infection may be required.
  Hossein Khedmat , Farahnaz Fallahian , Hassan Abolghasemi , Seyed-Moayed Alavian , Bashir Hajibeigi , Seyyed Mohammad Miri and Amir Masoud Jafari
  To determine the frequency of hepatitis B, hepatitis C, Human Immunodeficiency Virus (HIV) and syphilis infections in Iranian blood donors. The prevalence of serological markers of hepatitis B, hepatitis C, HIV and syphilis infections were evaluated in 318029 consecutive volunteer blood donors attending to Tehran blood transfusion service from March 2005 to March 2006. Those positive for hepatitis B surface antigen, anti-HCV, anti-HIV1/2 and VDRL (venereal disease research laboratory) reactivity were analyzed with a second independent HBsAg enzyme immunoassay (EIA) and neutralization assay; an additional independent anti-HCV EIA and HCV-RIBA assay; second independent anti-HIV1/2 test, HIV western blot and fluorescent Treponemal Antibody Absorbed (FTA-ABS), respectively. In 318029 participants, prevalence of positive HBsAg, HCV RNA, HIV western blot and FTA-ABS was 1684 (0.487%), 323 (0.093%), 11 (0.003%) and 19 (0.005%), respectively. In 1014 subjects randomly selected from these 318029 participants, besides standard interview, physical exam and routine serologic tests; anthropometric and biochemical were studies. In this selected group frequency of HBsAg was 3 (0.29, 95% CI: 0-0.64%); frequency of anti-HCV was 21 (2.07%), but it was (0.09%, 95% CI: 0-0.30%) by confirmatory HCV RNA test; frequency of HIV-Ab1, 2 was 8 (0.78%), but it was 2 (0.19%, 95% CI: 0-0.48%) by confirmatory test; frequency of RPR was 0 (0%, 95% CI: 0-0.30%). Despite excluding subjects with high-risk behaviors by standard interview and physical examination, still a few asymptomatic hepatitis B, hepatitis C, HIV-infected subjects existed among volunteer blood donors with demographic and biochemical findings similar to non-infected ones.
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