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02479 BIOCHEMICAL EVALUATION OF FUNGISTATIC PROPERTIES OF AQUEOUS GARLIC EXTRACT AGAINST HIV1/AIDS CANDIDA ISOLATES FROM NIGERIA Iwalokun Bamidele A Candidiasis as a multidrug resistance opportunistic infection in HIV1/AIDS patients has become a global concern and several studies have demonstrated the anticandidal and fungistatic properties of garlic in vitro and in vivo. However, the mechanisms involved in the growth inhibitory property of this microbicide have not been completely understood. This study investigated the avirulent properties of aqueous garlic extract (AGE) at fungistatic concentrations (0.75 1.5xMIC) and in 1hr human plasma sample following ingestion of 100g of garlic clove homogenate against 25 Candida isolates (Candida albicans (n = 17); C.glabrata (n = 5); C.krusei (n = 3) recovered from Nigerian HIV1/AIDS patients with candidiasis. Compared to control values, spectrophotometric analyses revealed significant decreases (P<0.05) in phosphatase activity (26.84 ± 3.3 vs 9.58 ± 1.9broth - 9.22 ± 1.7plasmaU/L), extracellular protease activity (43.34 ± 5.4 vs 21.16 ± 2.6broth 17.28 ± 2.8plasmaU/L) and membrane levels of trehalose (3.07 ± 0.2 vs 0.97 ± 0.2broth 1.05 ± 0.3plasma mM) and ergosterol (12.79 ± 0.5 vs 2.42 ± 0.8broth 2.96 ± 0.2plasma µg/g) coupled with loss of cell dimorphism in the tested isolates. The observed disparity in mean values of these virulence determinants in broth and plasma was found significant (P<0.05) for protease activity only. Multiple regression analyses further showed that these virulence factors were independently reduced by AGE. The results of this study provide a support for the complimentary use of garlic in the management of HIV1/AIDS with candidiasis. Dr Iwalokun Bamidele A |
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