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Keywords = Mice

  • Open Access Research Article
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    Trends Journal of Sciences Research 2018, 3(2), 69-74. http://doi.org/10.31586/Physiology.0302.02
    237 Views 31 Downloads 3 Shares PDF Full-text (2.323 MB)  HTML Full-text
    Abstract
    Heat stress can affect reproduction potential as an environmental factor. This Study was carried out to investigate the effects of rosemary extract on spermatogenesis and sexual hormones of laboratory mice under heat stress. 50 male mature mice were examined in five groups including a control group and four experimental groups
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    Heat stress can affect reproduction potential as an environmental factor. This Study was carried out to investigate the effects of rosemary extract on spermatogenesis and sexual hormones of laboratory mice under heat stress. 50 male mature mice were examined in five groups including a control group and four experimental groups [0, 100, 200 and 400 mg/kg of rosemary extract]. Samples were kept under heat stress four hours a day and received the extract doses for 30 days. At the end of the experiment, the amount of testosterone, LH, and FSH hormones plus the number of spermatogenic cells were measured. Obtained data were analyzed using the SPSS program. Heat stress in zero doses reduced testosterone, LH, and FSH significantly whereas rosemary extract increased testosterone and LH in 200 and 400 doses and FSH in 100,200, and 400 doses. Primary spermatocytes were decreased in zero doses significantly but increased significantly in other experimental groups [p<0.05]. In general, Heat stress reduces male sex hormones and spermatogenic cells but rosemary extract compensated this reduction dose-dependently and improved sexual potential under heat stress.  Full article
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  • Open Access Research Article
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    Trends Journal of Sciences Research 2018, 3(4), 151-160. http://doi.org/10.31586/Biochemistry.0304.02
    51 Views 32 Downloads PDF Full-text (1.084 MB)  HTML Full-text
    Abstract
    The study investigated the antiplasmodial potency of Justicia carnea in plasmodium infected mice. The aqueous leaf extract of Justicia carnea was subjected to phytochemical screening using GC-FID. The suppressive, prophylactic and curative activity of the studied plant was accessed after oral administration of standard drugs (5mgkg-1 choroquine and 4mgkg-1 artesunate)
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    The study investigated the antiplasmodial potency of Justicia carnea in plasmodium infected mice. The aqueous leaf extract of Justicia carnea was subjected to phytochemical screening using GC-FID. The suppressive, prophylactic and curative activity of the studied plant was accessed after oral administration of standard drugs (5mgkg-1 choroquine and 4mgkg-1 artesunate) and 400-800mgkg-1 of the extract. The effect of the aqueous leaf extract of the studied plant was also explored in the activities of liver enzymes, oxidative stress markers and hematological indices of plasmodium infected mice using spectrophotomertic methods and a hematology auto analyzer (BC 5300 Mindray England) respectively. The aqueous leaf extract of Justicia carnea showed considerable dose dependent antiplasmodial activity in the suppressive, prophylactic and curative test conducted. The suppressive activity of (92%) of the aqueous leaf extract of the studied plant at 800mgkg-1 was comparable to the standard drugs used while the mean survival time of plasmodium infected mice at 800mgkg-1 was beyond the mean survival time of the infected untreated group. The aqueous leaf extract of the studied plant also exhibited significant improvements in the activities of liver enzymes, oxidative stress markers and some hematological parameters at 800mgkg-1 of the extract when compared with the infected and untreated group. The results of the study exhibited the antiplasmodial activity of the studied plant, nonetheless, the crude extracts of the studied plant can be further purified for synergistic use with other potent antimalarial drugs to combat and achieve total clearance of plasmodium resistant infections.  Full article
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