Ginger (Zingiber officinale) is one of the indigenous medicinal plants of Iran and its antibacterial effects have been proven in some researches. In this research, the antibacterial effect of Ginger essence and comparison with chlorhexidine on some of common oral infect More
Ginger (Zingiber officinale) is one of the indigenous medicinal plants of Iran and its antibacterial effects have been proven in some researches. In this research, the antibacterial effect of Ginger essence and comparison with chlorhexidine on some of common oral infection bacteria was studied. The essential oil of Ginger was extracted by Clevenger's apparatus, GC and GC/MS devices were used for analysis of essential oil compounds and accurate measurements of the compounds. The effect of the essential oil of the Ginger and control on the common bacteria of the oral infection were evaluated using two methods: Disc deffusion and minimum inhibitory concentration (MIC). The results of antimicrobial tests showed that ginger had a significant inhibitory effects on a variety of gram-negative and gram-positive bacteria. It was also found that the essential oil of this medicinal plant, in terms of antimicrobial properties, showed relatively similar results to chlorhexidine mouthwash. Ginger essential oil had been shown to have good antimicrobial effects against common bacteria in oral infections. As a result, the essential oil of this plant with different concentrations, after completing studies, can be an appropriate alternative for chemical drugs and chemical mouthwashes in the treatment of oral bacterial infections.
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The aim of this survey was to determine the occurrence of liver abscesses and identification of associated bacterial etiology in cattle carcasses of Tabriz industrial abattoir. A total of 355 cattle carcasses were inspected for the presence of liver abscess More
The aim of this survey was to determine the occurrence of liver abscesses and identification of associated bacterial etiology in cattle carcasses of Tabriz industrial abattoir. A total of 355 cattle carcasses were inspected for the presence of liver abscesses. In the case of liver abscess presence, some characteristics of the carcasses were recorded; such as cattle’s age, gender, pregnancy and also abscesses’ characteristics (i.e., number, size and location of abscesses on liver). Abscesses as whole, were sampled and kept cold until microbiological examinations. Microbial analysis was performed on samples and cultures were incubated at aerobic, anaerobic and microaerophilic atmospheres. From 355 cattle carcasses, liver abscess was found in 28 (7.8%). Among positive results, 22 (78.57%) of livers had only 1, while 6 (21.42%) had 2 or more abscesses. Fusobacterium necrophorum was isolated from 15 (53.57%) and Arcanobacterium pyogenes from 10 (35.71%) of abscesses. According to the results of this study, Fusobacterium necrophorum was found as the most frequent bacterial causative agent of cattle liver abscess in Tabriz industrial abattoir, while Arcanobacterium pyogenes was considered as the second most frequent agent.
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Background &Objectives: Silver nanoparticles have been widely used due to their anti-bacterial activities and anticancer properties. The aim of this study was to investigate the antimicrobial effects and cell toxicity of silver nanoparticles synthesized using extrac More
Background &Objectives: Silver nanoparticles have been widely used due to their anti-bacterial activities and anticancer properties. The aim of this study was to investigate the antimicrobial effects and cell toxicity of silver nanoparticles synthesized using extracts of chamomile on three neoplastic cell lines (A549, MCF-7 and HeLa).
Materials & Methods: Silver nanoparticles were biologically synthesized using extracts of chamomile. After physical and chemical evaluation of the synthesized nanoparticles, their antimicrobial properties were estimated on Escherichia coli and Staphylococcus aureus. Finally, the inhibitory effect of synthesized nanoparticles evaluated by using MTT technique on 3 neoplastic cell lines.
Results: The average size of nanoparticles synthesized by the extract of chamomile were 19 nm. The synthesized nanoparticles could have a significant inhibitory and lethal effect on the two named bacteria. silver nanoparticles were able to show a 50% inhibitory effect on different cell lines at a concentration of 50 μg/ml.
Conclusion: Based on the results, it can be stated that medicinal plants can be used in the successful biosynthesis of silver nanoparticles. After human studies and tests, chamomile-based silver nanoparticles can be used as effective therapeutic agent in the treatment of some cancers due to their coating of effective secondary metabolites and the release of silver ions (Ag+).
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