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Showing 3 results for Ethanol

Ahangari Aa, Ownagh A, Tehrani A, Tukmechi A,
Volume 69, Issue 1 (4-2011)
Abstract

Background: Propolis (bee glue) is a resinous substance obtained from bee hives living on various plant sources. The purpose of this study was to evaluate the effects of ethanol extract of propolis (EEP) on the experimentally induced Candidial keratitis in rabbits. Methods: The alcoholic extract of propolis was prepared by 80% ethyl alcohol. After suppressing the immune system of 24 male rabbits, experimental Candida albicans keratitis was induced in the animals under local anesthesia and sterile conditions. The animals were later divided into four groups including the control or glycerin group and a nystatin and two 500 and 1000µg/ml EEP groups. Treatment continued for 21 days and after sacrificing the animals by humane methods, histopathological samples of the rabbits’ eyes were prepared. Results: Keratitis was developed in the eyes of all rabbits a week after the yeast inoculation. In the control group in which animals received glycerin, keratitis persisted until day 21. Clinical signs of keratitis disappeared in the Nystatin and 1000µg/ml EEP groups after 14 and 21 days, respectively. The clinical signs of keratitis partially ameliorated in the animals receiving 500µg/ml EEP. Histopathological examination revealed no differences between groups receiving nystatin or 1000µg/ml EEP. Conclusion: It is concluded that, ethanol extract of propolis could completely treat Candida albicans keratitis in 1000µg/ml concentrations. This extract can be used as a safe antifungal agent against Candida albicans and it is a good substitute for synthetic antifungal agents like nystatin.
Mohammad Molavi , Rasoul Yousefi Mashouf , Mohammad Yousef Alikhani , Hassan Mahmoudi , Alireza Zamani , Fariba Keramat , Sara Soleimani Asl ,
Volume 75, Issue 6 (9-2017)
Abstract

Background: Brucellosis is a systemic infection caused by gram-negative coccobacilli and facultative intracellular bacteria of the genus brucella. Brucellosis is a bacterial disease common to humans and livestock. Infection with Brucella spp. continues to pose a human health risk globally despite strides in eradicating the disease from domestic animals. The humoral and cellular immunity plays an important role in brucellosis. The effect of phagocytosis and cellular immunity has been demonstrated in brucellosis. The effect of cupping as a therapeutic method on bacterial diseases has been demonstrated. By considering this fact that cupping is an effective method on host immune system functions and has potential effect to regulate the inflammatory reactions.
Methods: This experimental study was carried out on 48 rats in 6 groups (48 rats were divided into 6 groups) during the first 6 months from January 2015 to July 2016 in the laboratory of microbiology and animal of Hamedan University of Medical Sciences. The rats were infected through the injection of Brucella melitensis with plenty 5×105 (cfu/ml) of bacteria. After a week, in order to approve the accuracy of the infection in the studied rats inoculated with coombos Brucella melitensis, Wright test, 2-Mercaptoethanol test and Coombs' Wright test were used. The rats were then treated with cupping method in their sacral area. IFN-γ was measured using enzyme-linked immunosorbent assay. And the study of tissues using hematoxylin and eosin (H&E) Staining.
Results: The results of this study showed that cupping leads to an increase in the mean serum level of interferon-gamma. The histopathological study of liver tissue showed that the radial arrangement was not observed in the infected group with brucellosis and the cells were acidophilus. While, the radial arrangement was observed in treated rats with cupping, but it was not complete. The number of enlarged sinusoids were reduced. But, cell infiltration was observed.
Conclusion: This study showed that cupping can increase serum level of IFN-γ, and thus help to the clearance of disease and improvement of injury in the brucellosis animals lab.

Niloufar Majdabadi, Mehraban Falahati , Fariba Heidarie-Kohan , Shirin Farahyar , Parvaneh Rahimi-Moghaddam, Mahtab Ashrafi-Khozani ,
Volume 75, Issue 11 (2-2018)
Abstract

Background: 2-phenylethanol is a colorless and aromatic compound with antimicrobial effects which is used extensively in perfumes and cosmetics, as well as in the food industry. Chronic vulvovaginal candidiasis is a vulvovaginal inflammation which is caused by Candida spp. Resistance to clotrimazole which is one of the most common drugs in the treatment of this disease was reported in many patients. In order to improve the treatment, the effect of 2-phenyl ethanol was investigated in combination with clotrimazole on Candida species isolated from chronic vulvovaginal candidiasis.
Methods: This interventional study was performed in Iran University of Medical Sciences from February, 2016 until December, 2016 on Candida species isolated from women with chronic candidial vulvovaginitis who had been referred to Lolagar Hospital of Tehran. All specimens were examined by direct microscopy, culturing on Candida CHROMagar medium (to primary identification), sabouraud dextrose agar medium) to preservation the isolates) and determining the internal transcribed spacer (ITS) sequence (in order to final determination of Candida species). Then clotrimazole and 2-phenyl ethanol alone and in combination, was examined on isolated species, according to Clinical and Laboratory Standards Institute (CLSI) M27-A3 protocol (micro-broth dilution method). Finally, findings were analyzed.
Results: From 40 detected strains of Candida species in this study, 95% were Candida albicans and 5% were Candida africana. The mean minimum inhibitory concentration (MIC) and minimum fungicidal concentration (MFC) of clotrimazole were 24.73±28.87 µg/ml and 30.18±33.004 µg/ml, respectively and the mean MIC and MFC of 2-phenylethanol were 2580±932.38 µg/ml and 3200±1403.29 µg/ml, respectively. The MIC50 and MIC90 of clotrimazole were 16 and 64 µg/ml, respectively. The MIC50 and MIC90 of 2-phenylethanol were both 3200 µg/ml. Most of the isolates were resistant to clotrimazole (82.5%). In combination test, the mean MIC of 2-phenylethanol and clotrimazole alone were 3200±0 µg/ml and 56±40.16 µg/ml, respectively. The fractional inhibitory concentration index (FICI) range was 0.14-0.37. Also, there was a significant difference between clotrimazole MIC values alone and in combination (P= 0.021).
Conclusion: The synergistic effect was observed in combination of clotrimazole and 2-phenylethanol.


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