Showing 3 results for Bayat
Hr Tavakoli, M Manafi, M Bayat, A Mehrabi Tavana,
Volume 2, Issue 2 (Autumn – Winter 2009[PERSIAN] 2008)
Abstract
Abstract Background and Objectives: Chromogenic media are the newest methods applied for rapid detection of pathogenic microorganisms in drinking water and food from 1998-2008. These Specific media contained the compounds acting as a substrate for microbial enzymes and, according to the type of enzyme, produce specific color. The aim of this study was to introduce the chromogenic media as a powerful tool in rapid detection of pathogenic agents in drinking water and food. Material and Methods: In this review article, the published papers about the use of chromogenic media in rapid detection of water and food-born pathogens were investigated. Results: The studies conducted in different countries show that the chromogenic media are very sensitive, specific and with high performance therefore, we can use it to detect the most important pathogenic microorganisms (such as Salmonella spp, E.coli, S.aureus, L.monocytogenes, and Candida spp.) in water and food samples. Conclusion: Because chromogenic media, in comparison with the other rapid detection methods such as PCR and ELISA, are very sensitive and cheaper, it can be applied as an alternative method. Key words: Chromogenic media, Rapid detection, water and food, Microorganism
Hr Pordeli, Sj Hashemi Hazaveh, M Jamshidian, M Bayat,
Volume 7, Issue 2 (summer[PERSIAN] 2013)
Abstract
Abstract Background and objective: Soil bacteria, particularly Bacillus genus have the potential of producing a range of bioactive substances with antimicrobial and antifungal properties. They have the ability to produce hundreds of active and effective biologic compound against microorganisms. Therefore, it seems to be a proper candidate in the biocontrol of fungal pathogenesis. Material & Methods: In this study, soil samples were collected from different parts of Gorgan in order to isolate Bacillus and to determine their antifungal activity against T.mentagrophytes. The Isolates that had the highest antifungal effects were analyzed by PCR and 16s rRNA sequencing. Results: of 54 strains, 14 have antifungal activity. The Isolates, S4 and S12, identified as B.cereus and B.thuringiensis respectively show the highest antidermatofit effect. These isolates based on 16s rRNA sequence analysis show 97% homology with Bacillus cereusstrain KU4 and Bacillus thuringiensisstrain ucsc27. Conclusion: According to the results, it seems that the soil Bacilli have biocontrol potential against dermatophytic agents such as T.mentagrophytes. Keywords: Antifungal effects, Bacillus, Rhizospheric soil, T.mentagrophytes
N Nazari, Ma Rahimi, E Bayat,
Volume 8, Issue 3 (Autumn[PERSIAN] 2014)
Abstract
Abstract
Background and Objective: Trichomonas vaginalis is a pathogenic agent known worldwide and affects about 180 million annually. We aimed to investigate the prevalence of Trichomonas vaginalis in diabetic patients referred to diabetic research center.
Material and Methods: In this descriptive-analytic study, 215 women referring to the Diabetic Center in Kermanshah Province were investigated for Trichomonas vaginalis. After collecting the data by a questionnaire, the samples were obtained from posterior fornix by sterile swabs and sent for assessing by direct microscopy and Dorset medium.
Results: Totally, 1.3 percent of the women were confirmed to be infected with T. vaginalis.
Conclusion: The range of blood sugar cannot remarkably affect the prevalence of T. vaginalis. Given the limitations of this study and low prevalence compared to similar studies, we recommend further comprehensive research for better understanding.
Keywords: Trichomonas Vaginalis, Diabet, Prevalence
