Breast cancer research and treatment
-
Breast Cancer Res. Treat. · Jun 2009
ReviewUse of antioxidant supplements during breast cancer treatment: a comprehensive review.
An estimated 45-80% of breast cancer patients use antioxidant supplements after diagnosis, and use of antioxidant supplements during breast cancer treatment is common. Dietary supplements with antioxidant effects include vitamins, minerals, phytonutrients, and other natural products. We conducted a comprehensive review of literature on the associations between antioxidant supplement use during breast cancer treatment and patient outcomes. ⋯ The evidence is currently insufficient to inform clinician and patient guidelines on the use of antioxidant supplements during breast cancer treatment. Thus, well designed clinical trials and observational studies are needed to determine the short- and long-term effects of such agents.
-
Breast Cancer Res. Treat. · Jun 2009
Randomized Controlled Trial Comparative StudyDetection and relevance of germline genetic polymorphisms in glutathione S-transferases (GSTs) in breast cancer patients from northern Indian population.
Glutathione S-transferases (GSTs) are polymorphic superfamily of detoxification enzymes that detoxify therapeutic drugs and various carcinogens. We undertook a case-control study in northern Indian population based sample consisting of 413 patients and 410 controls to evaluate association of null genotype in GSTM1 and GSTT1 along with polymorphism in GSTP1 (A-->G) with breast cancer risk. ⋯ The findings of this study are in line with previously published reports that show an overall association with GSTM1 and GSTP1 polymorphisms with breast cancer risk. Our results suggest that the variants in low penetrance genes such as GSTM1, GSTT1 and GSTP1 are associated with an increased breast cancer risk thereby suggesting their contribution in the etiology of breast cancer.