Literature DB >> 21373880

Green tea polyphenols avert chronic inflammation-induced myocardial fibrosis of female rats.

Chwan-Li Shen1, Christina Samathanam, Owatha L Tatum, Suzanne Graham, Christine Tubb, Jay J Cao, Dale M Dunn, Jia-Sheng Wang.   

Abstract

OBJECTIVE: Green tea proposes anti-inflammatory properties which may attenuate chronic inflammation-induced fibrosis of vessels. This study evaluated whether green tea polyphenols (GTP) can avert fibrosis or vascular disruption along with mechanisms in rats with chronic inflammation. TREATMENTS: Forty 3-month-old female rats were assigned to a 2 (placebo vs. lipopolysaccharide, administration) × 2 (no GTP vs. 0.5% GTP in drinking water) factorial design for 12 weeks.
METHODS: Masson's trichrome staining evaluated myocardial fibrosis in coronary vessels and surrounding myocardium. Whole blood specimens were counted for differentials. Spleen tumor necrosis factor-α (TNF-α) mRNA expression was determined by real-time RT-PCR. Data were analyzed by two-way analysis of variance (ANOVA) followed by mean separation procedures.
RESULTS: After 12 weeks, lipopolysaccharide administration induced myocardial fibrosis in vessels and surrounding myocardium, spleen TNF-α mRNA expression, and leukocytes, while GTP supplementation in drinking water significantly averted such observation.
CONCLUSIONS: GTP attenuates myocardial fibrosis through a suppression of chronic inflammation and innate immune responses.

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Year:  2011        PMID: 21373880     DOI: 10.1007/s00011-011-0320-y

Source DB:  PubMed          Journal:  Inflamm Res        ISSN: 1023-3830            Impact factor:   4.575


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