Green Tea Extract (Camellia sinensis L.) Effects on Uric Acid Levels on Hyperuricemia Rats (Rattus norvegicus)
Putranty Widha Nugraheni, Fitria Rahmawati, Chanif Mahdi, Sasangka Prasetyawan
J. Pure App. Chem. Res. Vol 6, No 3 (2017), pp. 246-254
Submitted: August 09, 2017     Accepted: September 26, 2017     Published: September 26, 2017
DOI: http://dx.doi.org/10.21776/ub.jpacr.2017.006.03.355

Abstract


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Uric acid is the end product of purine degradation. When uric acid levels exceed normal limits, it will build up and cause hyperuricemia. Allopurinol is one of the most effective and common medicine for hyperuricemia, but it brings serious side effects, therefore it is needed alternative therapy for hyperuricemia. One plant that may be expected to low uric acid levels is green tea (Camellia sinensis L.), that contains many antioxidants polyphenols, especially flavonoids. Flavonoid has strong antioxidant properties, act as free radical and metal scavengers, and also xanthine oxidase (XOD) inhibitors. This study investigates the potential of green tea using various doses of 150 mg/kg, 300 mg/kg, and 600 mg/kg of body weight in 24 white male rats (Rattus norvegicus) Wistar strain that has been received high purine diet in 60 consecutive days. This study used DHBSA methods to measure uric acid levels in blood serum and urine that excreted 8 hours before surgery. Green tea extract that contains polyphenol can inhibit XOD activities, therefore, it leads to decrease uric acid level in blood and increase the excretion through urine by modulating urate gene transporter. A therapy with 600 mg/kg body weight of GTE is the most effective dose to decrease uric acid levels in serum and to increase excretion of exceeding uric acid significantly (p < 0.01), from One Way ANOVA and Tukey analysis.


Keywords : hyperuricemia, uric acid, green tea extract, Camellia sinensis, uric acid levels
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