Melatonin enhanced bexarotene efficacy in experimental mammary carcinogenesis
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چکیده
منابع مشابه
Celecoxib and melatonin in prevention of female rat mammary carcinogenesis.
The present experiment aims to evaluate tumor suppressive effects of a selective inhibitor of cyclooxygenase-2 (COX-2) celecoxib (Celebrex, Pfizer) administered alone and in combination with melatonin in the prevention of N-methyl-N-nitrosourea (NMU)-induced mammary carcinogenesis in Sprague-Dawley female rats. Celecoxib was administered daily at a concentration of 1.666 g/kg diet to two groups...
متن کاملStudying humane endpoints in a rat model of mammary carcinogenesis
Objective(s): The present work intended to clearly define the most adequate humane endpoints in an experimental assay of mammary carcinogenesis in rats. Materials and Methods: Animals were observed twice a day; all parameters were registered once a week and the euthanasia endpoints were established in order to monitor the animal welfare/...
متن کاملBexarotene induces cellular senescence in MMTV-Neu mouse model of mammary carcinogenesis.
Previous studies have shown that retinoids and rexinoids can prevent breast cancer in animal models and in women with increased risk of developing the disease. The cellular effects of these vitamin A analogues have been primarily associated with induction of differentiation and inhibition of proliferation. In this study, we tested the hypothesis that bexarotene (LGD1069, Targretin), a rexinoid,...
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Exposure of female Holtzman rats to constant light (24 hr/day) immediately after birth significantly increased 9, 10-dimethyl-1,2-benzanthracene-induced mammary cancer. Such "functionally pinealectomized" animals also revealed significant increase in the circulating level of prolactin and exaggerated development and proliferative activity of mammary epithelium, as measured by quantitation of te...
متن کاملOestrogens and Mammary Carcinogenesis
There is a large and compelling body of epidemiological and experimental evidence that oestrogens are the fuel behind the aetiology of breast cancer. The carcinogenic effects of oestrogen are postulated to be mediated by: the stimulation of cellular proliferation through their receptor-mediated hormonal activity. Other mechanisms include; direct genotoxic effects by increasing mutation rates th...
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ژورنال
عنوان ژورنال: Neoplasma
سال: 2012
ISSN: 1338-4317
DOI: 10.4149/neo_2012_060