Chinese green tea consumption reduces oxidative stress, inflammation and tissues damage in smoke exposed rats.
OBJECTIVE
One cause of cigarette smoking is oxidative stress that may alter the cellular antioxidant defense system, induce apoptosis in lung tissue, inflammation and damage in liver, lung, and kidney. It has been shown that Chinese green tea (CGT) (Lung Chen Tea) has higher antioxidant property than black tea. In this paper, we will explore the preventive effect of CGT on cigarette smoke-induced oxidative damage, apoptosis and tissues inflammation in albino rat model.


METHODS
Albino rats were randomly divided into four groups, i.e. sham air (SA), cigarette smoke (CS), CGT 2% plus SA or plus CS. The exposure to smoking was carried out as a single daily dose (1 cigarette/rat) for a period of 90 days using an electronically controlled smoking machine. Sham control albino rats were exposed to air instead of cigarette smoke. Tissues were collected 24 hr after last CS exposure for histology and all enzyme assays. Apoptosis was evidenced by the fragmentation of DNA using TUNEL assay.


RESULTS
Long-term administration of cigarette smoke altered the cellular antioxidant defense system, induced apoptosis in lung tissue, inflammation and damage in liver, lung, and kidney. All these pathophysiological and biochemical events were significantly improved when the cigarette smoke-exposed albino rats were given CGT infusion as a drink instead of water.


CONCLUSIONS
Exposure of albino rat model to cigarette smoke caused oxidative stress, altered the cellular antioxidant defense system, induced apoptosis in lung tissue, inflammation and tissues damage, which could be prevented by supplementation of CGT.
Department of Biology and Biotechnology, American University of Madaba, Madaba, Jordan.
Wajdy
W
Al-Awaida
Department of Biology and Biotechnology, American University of Madaba, Madaba, Jordan ; On Sabbatical leave from Faculty of Agriculture, The University of Jordan, Amman, Jordan.
Muhanad
M
Akash
Department of Biology and Biotechnology, American University of Madaba, Madaba, Jordan.
Zaid
Z
Aburubaiha
Department of Clinical Pharmacy and Therapeutics, Applied Science University, Amman Jordan.
Wamidh H
WH
Talib
Department of Physics and Applied Sciences, American University of Madaba, Madaba, Jordan.
Hayel
H
Shehadeh
(Lung Chen); Antioxidant enzymes; Apoptosis; Chinese green tea (CGT); Cigarette smoke; Inflammation; Oxidative stress