Anand M Arokia Vijaya, Suresh K
Department of Biochemistry and Biotechnology, Faculty of Science, Annamalai University, Chidambaram, Tamil Nadu, India.
Toxicol Int. 2014 May;21(2):179-85. doi: 10.4103/0971-6580.139805.
The present study was designed to examine the chemopreventive effects of phloretin against 7, 12-dimethylbenz (a) anthracene (DMBA) induced buccal pouch carcinogenesis in male golden Syrian hamsters in order to discover resources to improve the traditional medicine.
Hamsters were divided into four groups of 10 animals each. Group I was served as an untreated control. Group II hamsters were painted with 0.5% DMBA in liquid paraffin on the left buccal pouches three times a week for 14 weeks. Group III hamsters were orally administrated with phloretin at a dose of 40 mg/kg body Weight (b.wt) on days alternate to DMBA application. Group IV hamsters were orally administrated with phloretin alone and served as the drug control. The experiment was terminated at the end of fourteenth week. The experimental animal's tumors were subjected into morphological examination and subsequently screened the pathological changes and estimate the activities of bi-products of lipid peroxidation, antioxidants enzymes and phase I and II detoxification enzyme status.
In DMBA alone treated hamster showed increased levels of lipid peroxidation by products, leads to decreased levels of enzymatic and non-enzymatic antioxidants status, activities of phase I and II detoxification enzyme status were altered. Normalized the neoplastic changes, decreased the levels of lipid by products, retain the antioxidants and restored the phase I and II enzymes were observed in phloretin administrated animals during DMBA induced oral carcinogenesis.
Phloretin has possible chemopreventive role in which modulating the antioxidant and detoxification enzyme status, thereby retarding DMBA induced buccal pouch carcinogenesis.
本研究旨在检测根皮素对7,12-二甲基苯并(a)蒽(DMBA)诱导的雄性叙利亚金黄地鼠颊囊癌变的化学预防作用,以探寻改善传统医学的资源。
将仓鼠分为四组,每组10只。第一组作为未处理对照。第二组仓鼠每周三次在左侧颊囊涂抹0.5% DMBA的液体石蜡溶液,持续14周。第三组仓鼠在涂抹DMBA的隔天口服给予40mg/kg体重的根皮素。第四组仓鼠单独口服根皮素,作为药物对照。实验在第14周结束时终止。对实验动物的肿瘤进行形态学检查,随后筛查病理变化,并评估脂质过氧化产物、抗氧化酶以及I相和II相解毒酶状态的活性。
单独用DMBA处理的仓鼠显示脂质过氧化产物水平升高,导致酶促和非酶促抗氧化剂状态水平降低,I相和II相解毒酶状态活性改变。在DMBA诱导口腔癌变过程中,给予根皮素的动物出现肿瘤变化正常化,脂质产物水平降低,抗氧化剂得以保留,I相和II相酶恢复正常。
根皮素可能具有化学预防作用,可调节抗氧化剂和解毒酶状态,从而延缓DMBA诱导的颊囊癌变。