https://www.selleckchem.com/products/tng260.html The purpose of this study was to examine the expression of estrogen receptor α (ERα) and β (ERβ), androgen receptor (AR), SIRT1, SIRT2 and SIRT3 in prostate cancer (PCa). From October 2010 to January 2015, 70 patients who had undergone radical prostatectomy following a PCa diagnosis were enrolled in our study. Normal prostate tissue (NPT) and prostate cancer tissues (PCAT) were separated, and the expression of each receptor in each tissue was analyzed with immunochemical staining. Univariate and multivariate analyses were performed to identify factors affecting the development of PCa. ERβ and AR were highly expressed in PCAT compared with NPT (p<0.05). SIRT2 was highly expressed in NPT and PCAT (p<0.05). Univariate and multivariate analyses showed that AR and SIRT2 affect PCa development. AR is a risk factor for PC, and SIRT2 is associated with a lower incidence of PCa. AR is a risk factor for PC, and SIRT2 is associated with a lower incidence of PCa. Progress in cancer treatment and diagnosis has made second cancer after medical radiation exposure a particular concern among childhood cancer survivors. Calorie restriction (CR) is a broadly effective cancer prevention strategy, although its effects on radiation-induced intestinal tumours are unclear. Here we examined the cancer-preventative efficacy of a CR diet at different starting ages on radiation induction of intestinal tumours in mice. Male C3B6F1 Apc mice were irradiated with 0 or 2 Gy of X-rays at 2 weeks of age. After an interval of 2, 8 or 18 weeks, mice were fed with a non-CR (95 kcal/week/mouse) or CR (65 kcal/week/mouse) diet. Intestinal tumours were evaluated for number, size distribution and malignancy. CR suppressed the size and progression of both spontaneous and radiation-induced intestinal tumours depending on age at starting of CR. CR diets were effective even administered to adult mice. CR was effective for suppression of tumour progression, which