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Abstract Title:

Protective effect of kombucha on rats fed a hypercholesterolemic diet is mediated by its antioxidant activity.

Abstract Source:

Pharm Biol. 2015 ;53(11):1699-709. Epub 2015 Apr 9. PMID: 25856715

Abstract Author(s):

Khaled Bellassoued, Ferdaws Ghrab, Fatma Makni-Ayadi, Jos Van Pelt, Abdelfattah Elfeki, Emna Ammar

Article Affiliation:

Khaled Bellassoued

Abstract:

CONTEXT: Kombucha (KT) is claimed to have various beneficial effects on human health, but there is very little scientific evidence available in the literature.

OBJECTIVE: The present study investigates the effects of Camellia sinensis (GT) Linn. (Theaceae) and KT, two natural drinks, on cholesterol and antioxidant status using a hypercholesterolemia rat model.

MATERIALS AND METHODS: The present study compared the free-radical scavenging abilities and polyphenol levels of GT and KT. Wistar rats fed cholesterol-rich diets were given KT or GT (5 mL/kg body weight per day, po) for 16 weeks, then fasted overnight and sacrificed. The plasma lipid levels, thiobarbituric acid reactive substances (TBARS) and aspartate aminotransferase (AST), alanine aminotransferase (ALT), and γ-glutamyl transpeptidase (GGT) serum levels, antioxidant activities of superoxide dismutase (SOD) and catalase (CAT), and creatinine and urea rats were examined.

RESULTS: KT had a phenolic compound of 955 ± 0.75 mg GAE/g) followed, by GT (788.92 ± 0.02 mg GAE/g). The free radical scavenging activity of KT was higher than GT. Compared with GT, KT induced lowered serum levels of TC, TG, VLDL-C, and LDL-C by 26, 27, 28, and 36%, respectively, and increased the serum level of high-densitylipoprotein cholesterol (HDL-C). KT induced a 55% decrease of TBARS level in liver and 44% in kidney, compared with those of rats fed a cholesterol-rich diet alone. Moreover, CAT and SOD activities were reduced by 29 and 33%, respectively, in liver and 31 and 35%, respectively, in kidney, after oraladministration of KT, compared with those of HCD-fed rats.

CONCLUSION: The findings revealed that KT administration induced attractive curative effects on hypercholesterolemic, particularly in terms of liver-kidney functions in rats. Its effect on humans needs to be studied further.

Study Type : Animal Study

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Sayer Ji
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