Mouse Anti-Human Inhibin beta A monoclonal antibody, clone 0615

Melatonin and its receptors are found in the testis of many species, where they mediate testicular functions. The present study aimed to investigate the expression of melatonin receptors (MT1 and MT2) in bovine Sertoli cells (SCs), using reverse transcription polymerase chain reaction (RT-PCR) and western blot. In addition, we assessed the mRNA levels of spermatogenesis-related genes (real-time PCR) and secretion of inhibin B after treatment with various concentrations (0, 80, 160, and 320 pg/mL) of melatonin at different time points (24, 48, or 72 h). We found that bovine SCs express MT1 and MT2 receptors, which were regulated by melatonin in time- and dose-dependent manners after treatment with melatonin. Exogenous melatonin up-regulated the expression of spermatogenesis-related genes, including Cyclin D1, Cyclin E, Pdgfa, Dhh, Occludin, and Claudin, and decreased the mRNA levels of P21 and Kit1 in a time or dose-dependent manner. Meanwhile, melatonin supplementation significantly affected Inhba, Inhbb and Inha mRNA expression. These findings were consistent with inhibin B levels detected in the culture medium. In conclusion, exogenous melatonin acts via its receptors and appears to play regulatory roles in the development and function of bovine SCs. (C) 2014 Elsevier B.V. All rights reserved.

INHBA is reported to be up-regulated in various malignant tumours. However, the data on its expression pattern and its clinical relevance in breast cancer are unknown. The aim of this study is to investigate INHBA expression and its prognostic significance in breast cancer. INHBA expression at the mRNA level was examined by real-time quantitative polymerase chain reaction (RT-PCR) in 10 pairs of breast cancer tissues and their corresponding adjacent normal tissues. INHBA protein expression was analysed by using immunohistochemistry (IHC) on paraffin-embedded breast cancer samples and normal breast tissues. Statistical analyses were also performed to evaluate the clinicopathological significance of INHBA expression. The results showed that in 10 paired samples, the mRNA expression of INHBA was higher in breast cancer tissues than in the adjacent normal tissues. In the paraffin-embedded tissue samples, the expression of INHBA was higher in breast cancer than in the normal breast tissues. Compared with normal breast tissue samples, INHBA overexpression was detected in 51.59% (65/126) of patients. Overexpression of INHBA was significantly associated with clinical stage (P<0.001), N classification (P<0.001), differentiation (P=0.011), and decreased overall survival (P=0.001). In a multivariate analysis, INHBA expression was an independent prognostic factor for OS (overall survival) (Hazard ratio [HR] =0.305, 95% confidence interval [CI] 0.143-0.652; P=0.002). INHBA is up-regulated in breast cancer, and its expression is associated with clinical stage, N classification, differentiation and survival. INHBA may serve as a prognostic indicator for patients with breast cancer.