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diuretic mechanism of tea

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Snigdha Priyadarshi, Brandon Valentine, Chi Han, Olga V Fedorova, Alexei Y Bagrov, Jiang Liu, Sankaridrug M Periyasamy, David Kennedy, Deepak Malhotra, Zijian Xie, Joseph I Shapiro
BACKGROUND: Left ventricular hypertrophy commonly complicates chronic renal failure. We have observed that at least one pathway of left ventricular hypertrophy appears to involve signaling through reactive oxygen species (ROS). Green tea is a substance that appears to have substantial antioxidant activity, yet is safe and is currently widely used. We, therefore, studied whether green tea supplementation could attenuate the development of left ventricular hypertrophy in an animal model of chronic renal failure...
May 2003: Kidney International
Nazir Ahmad Dar, Gulzar Ahmad Bhat, Idrees Ayoub Shah, Beenish Iqbal, Rumaisa Rafiq, Sumaiya Nabi, Mohd Maqbool Lone, Farhad Islami, Paolo Boffetta
Salt tea is the most commonly used beverage in Kashmir, India, where esophageal squamous cell carcinoma (ESCC) is the most common cancer. Salt tea is brewed in a unique way in Kashmir, usually with addition of sodium bicarbonate, which makes salt tea alkaline. As little information about the association between salt tea drinking and ESCC was available, we conducted a large-scale case-control study to investigate this association in Kashmir. We recruited 703 histologically confirmed cases of ESCC and 1664 controls individually matched to cases for age, sex, and district of residence...
March 15, 2015: International Journal of Cancer. Journal International du Cancer
K R W Abeywickrama, W D Ratnasooriya, A M T Amarakoon
BACKGROUND: Black tea [Camellia sinensis (L.) O. Kuntze (family: Theaceae)] has been used by Sri Lankan traditional practitioners to promote diuresis. However, the type and grade of tea is not specified. MATERIALS AND METHODS: THIS STUDY INVESTIGATES THE DIURETIC ACTIVITY OF BLACK TEA INFUSION (BTI) IN RATS USING BROKEN ORANGE PEKOE FANNINGS (BOPF) GRADE FROM MAJOR AGROCLIMATIC ELEVATIONS: high-, mid-, and low-grown. Different concentrations of BTI, furosemide (positive control), and water (vehicle) were orally administered to starved (18 h) male rats (n = 9/group), then hydrated...
October 2010: Pharmacognosy Magazine
Syed Ibrahim Rizvi, Mohammad Abu Zaid
BACKGROUND: Tea catechins (EGCG, EGC, ECG and EC) possess many important biological properties. We evaluated the effect of tea catechins on erythrocyte membrane Na(+)/K(+)-ATPase and sodium/hydrogen exchanger (NHE) activity in normal (control) and NIDDM subjects. METHODS: Erythrocyte membrane Na(+)/K(+)-ATPase and NHE activity were determined in normal and non-insulin dependent diabetes mellitus (NIDDM) patients. In vitro effect of tea catechins was studied by incubating membrane/intact erythrocytes in assay medium prior to Na(+)/K(+)-ATPase/NHE activity determination...
April 2005: Clinica Chimica Acta; International Journal of Clinical Chemistry
Yi-Ching Yang, Feng-Hwa Lu, Jin-Shang Wu, Chih-Hsing Wu, Chih-Jen Chang
BACKGROUND: Tea has long been believed to possess hypotensive effects in popular Chinese medicine. However, conflicting results have been shown among human trials and animal studies on the relation between tea consumption and blood pressure. Epidemiological evidence about the long-term effect of tea on hypertensive risk is also inconsistent. METHODS: We examined the effect of tea drinking, measured in detail for the past decades, on the risk of newly diagnosed hypertension in 1507 subjects (711 men and 796 women), 20 years or older, who did not have a hypertensive history during 1996 in Taiwan...
July 26, 2004: Archives of Internal Medicine
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