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Articles by M. Mansouri
Total Records ( 2 ) for M. Mansouri
  B. Beheshti , G.R. Sharifi-Sirchi , M. Mansouri , A. Hosseinipour and N.L. Schlaich
  Citrus bacterial canker, caused by Xanthomonas citri subsp. citri (Xcc), is a destructive disease. So far used chemicals to control this pathogen are either not effective or have harmful effects on the environment. To improve control of this disease, lime (Citrus aurantifolia) plants inoculated with Xcc were treated with β-Aminobutyric Acid (BABA), ascorbic acid (vitamin C), thiamin (vitamin B1), green tea (Camellia sinensis), copper oxychloride and distilled water. Lesion diameters of inoculated leaves were evaluated twenty days after treatment. The results showed that BABA and green tea had inhibitory effects on disease development. None of the agents used for plant treatment had direct antimicrobial activity on Xcc, except copper oxychloride. This indicated that the inhibitory effects of BABA and green tea resulted from strengthening the defense capacities of the plant. To support this claim, partial coding sequences of Pathogenesis-Related (PR) genes from lime were cloned and sequenced. Analysis of PR gene expression showed increased mRNA levels of β-1,3-glucanase and chitinase, during disease development. Reduction in lesion size and lack of antimicrobial activity indicate that BABA and green tea might be useful treatments against Xcc infection.
  M. Mansouri and R. Ramazanzadeh
  The aim of this study was to determine the prevalence of Extended-Spectrum Beta-Lactamase (ESBL) producing Escherichia coli and antimicrobial susceptibility pattern of ESBL-producing and non producing strains. We evaluated 158 E. coli strains isolated from various clinical specimens. The double-disk synergy test was performed on the isolates for the detection of ESBL. These genes were confirmed by PCR methods. The prevalence of ESBL-producing E. coli was found as 16.8%. The ESBL-producing isolate rates were 22.2% (6/27) in intensive care units, 22.2% (6/27) in wards and 44.6% (15/27) in outpatients. This study, present the existence of ESBL-producing isolates and high rate of resistance to antibiotics. Clinicians should be familiar with the clinical importance of these enzymes and potential strategies for dealing with them. The results of the study suggest that community acquired control of ESBL-producing E. coli has great importance.
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