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Articles by M.H. Shirazi
Total Records ( 4 ) for M.H. Shirazi
  M.H. Shirazi , R. Ranjbar , S. Eshraghi , G. Sadeghi , N. Jonaidi , N. Bazzaz , M. Izadi and N. Sadeghifard
  In the present study, the in vitro inhibitory effects of G. glabra extract against the growth of Salmonella typhi, S. paratyphi B, Shigella sonnei, S. flexneri and enterotoxigenic E. coli (ETEC E. coli) was investigated using well and disc diffusion method. Shigella spp. and enterotoxigenic E. coli but Salmonella paratyphiB showed no susceptibility to liquorice with concentrations lower than 7.5%, however all tested bacterial strains exhibited susceptibility to high concentration of liquorice. Results obtained from present study showed that G. glabra can be considered as an alternative herbal antibacterial agent against the bacterial strains tested.
  M.H. Shirazi , R. Ranjbar , S. Eshraghi , G. Amin , M. Seyed Nouri and N. Bazzaz
 

Antibacterial activity of Sage extract at concentrations of 0.1, 0.05, 0.025, 0.0125, 0.00625, 0.003125, 0.00156, 0.0005 and 0.00025 g dL-1 against Salmonella typhi, Shigella sonnei, S. flexneri, Proteus vulgaris, Staphylococcus aureus, ETEC Escherichia coli and Pseudomonas aeruginosa was evaluated. Susceptibility testing of bacterial strains against 18 antibiotics was also performed for comparison. The results showed that P. aeruginosa and ETEC E. coli were completely resistant to Sage extract even at concentration of 0.1 g dL-1. Its antibacterial activity (0.1 g dL-1) against P. vulgaris, S. flexneri and S. sonnei was the same as nitrofurantoin and ampicilline respectively. Sage extract (0.1 and 0.05 g dL-1) exhibited the same effects as ampicilline and streptomycin against S. typhi. Its antibacterial activity (0.1, 0.05 and 0.25 g dL-1) against S. aureus was the same as ceftazidim, chloramphenicol, gentamycin, neomycin and nitrofurantoin and was more significant compared to streptomycin and vancomycin. The results suggest Sage can be considered as an alternative herbal in the treatment of infections caused by the above-mentioned bacteria.

  M.H. Shirazi , R. Ranjbar , V. Asgari , M. Mohebali and M. Hamidian
  The main objective of this study was to evaluate the prevalence of secondary bacterial infections in the patients with cutaneous lesions. The patients admitted to leishmaniasis laboratory of faculty of health, Tehran university of medical sciences from October 2004 to June 2005 were subjected in this study. Clinical samples were analyzed using standard bacteriological and parasitological methods. One hundred seventy three patients were subjected to this study and leishmania was found in 84 (48.5%) cases. According to bacteriological experiments, 47 cases (55.9%) had been also infected by bacterial infections. The most prevalent bacterial isolates included group D Streptococcus (19.1%), Enterococcus spp. (19.1%) and Staphylococcus aureus (12.7%). The findings of current study indicated that the bacterial infections are still an important problem in the patients with cutaneous leishmaniasis and should be considered in treating these patients.
  A. Ghasemi , M.H. Shirazi , R. Ranjbar , M.R. Khorramizadeh , N.E. Daryani and M. Hosseini
  The aim of this study was to investigate the prevalence of cagA and cagE genes in H. pylori strains isolated from different patient groups with Non-Ulcer Dyspepsia (NUD), Duodenal Ulcer (DU), Gastric Ulcer (GU) and Gastric Cancer (GC). The patients admitted to the gastroenterology unit at Sharyati hospital in Tehran in 2006 were included in this study. Gastric biopsy specimens were obtained from the antrum of the stomach from each patient then cultured for detection of H. pylori. Identification of H. pylori was performed according to the standard bacteriological methods. Genomic DNA was extracted using a commercially available Qia gene kit. PCR was done using primers cagA-F, cagA-R and cagE-F, cagE-R to detect the target genes cagA and cagE, respectively. Amplified products of target genes were confirmed by sequencing. The cagA and cagE were detected among 85 and 86% of H. pylori isolates, respectively. Prevalence of cagA and cagE genes in the patients with NUD, DU, GU and GC were 22 (64.7%), 28 (100%), 18 (90%), 10 (100%) and 25 (73.5%), 27 (96.4%), 19 (95%), 7 (70%), respectively. The current study demonstrated a significant correlation between peptic ulceration and the presence of H. pylori isolates carrying cagE and cagA genes in Iranian patients.
 
 
 
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