Immunocytological evidence for the presence of vertebrate FSH and LH-like substances in the brain and thoracic ganglion of the swimming crab, Portunus trituberculatus

Investigating the distribution of follicle stimulating hormone (FSH) and luteinizing hormone (LH) in the swimming crab, Portunus trituberculatus, helps in the understanding of its reproductive regulation mechanism. This study has detected the location of vertebrate FSH- and LH-like substances in the brain and the thoracic ganglion mass with immunocytochemical techniques. Their immunoreaction is very weak or negative during the immature period and the post-spawning period, while it is stronger in the mature period. Localization of FSH-like immunoreactive cells resembles that of LH-tike cells. These immunoreactive cells were observed chiefly in the anterior median cell-cluster of the protocerebrum with stronger immunostaining. There were only a few in the inboard cell-cluster of the olfactory lobe of the deutocerebrum and the posterior cell-cluster of the tritocerebrum. Immunoreactive cells were located in all the three ganglia in the thoracic ganglion mass. These results indicated that substances resembling the vertebrate FSH and LH exist in P. trituberculatus, and their expression has some correlation with the developmental stage of ovaries, thus they might engage in the ovary development and ovulation.     

Immunorecognition of estrogen and androgen receptors in the brain and thoracic ganglion mass of mud crab, Scylla paramamosain

The brain and the thoracic ganglion of a crustacean can synthesize and secrete gonad-stimulating hormone (GSH) which stimulates the maturation of gonad. In the previous experiments, sex steroid hormones (estradiol, testosterone, progesterone, etc.) have been detected from the crustacean. However, the feedback regulation of sex steroid hormones on the brain and the thoracic ganglion of the crustacean has not been reported so far. In the present experiment, monoclonal antibodies were applied to investigate the immunorecognition of estrogen receptor (ER) and androgen receptor (AR) in the brain and the thoracic ganglion mass of Scylla paramamosain. The results showed that the distribution of the immunopositive substances of ER and AR was extremely similar. They distributed in the protocerebrum, deutocerebrum and tritocerebrum of the brain, and mainly in protocerebrum. In the thoracic ganglion mass, immunopositive substances distributed in the subesophageal ganglion, thoracic ganglion and abdominal ganglion, and mostly in subesophageal ganglion. Immunopositive substances of ER and AR mostly existed in the cytoplasm of neurons. The present study will provide morphological evidence for the origin and the evolution of ER and AR. In addition, the immunoreactivities of ER and AR suggested that the estrogen and androgen may be involved in the feedback regulation of crustacean neuroendocrine.     

雄性三疣梭子蟹神经器官GnRH受体的免疫组织化学研究

采用MaxVisionTM免疫组织化学方法,以兔抗人GnRH受体的多克隆抗体,对雄性三疣梭子蟹(Portunus trituberculatus)的神经器官(视神经节、脑神经节和胸神经团)进行免疫组织化学定位.结果显示:GnRH受体的免疫阳性物质在雄性三疣梭子蟹视神经节、脑神经节和胸神经团的多个部位都有较为广泛的存在,定位在神经细胞的细胞质和神经髓质中,不同神经器官GnRH受体的免疫阳性强度有一定的差异.三疣梭子蟹神经器官存在GnRH受体的免疫阳性物质,为GnRH参与其神经调节作用提供了形态学依据.     

Immunorecognition of estrogen and androgen receptors in the brain and thoracic ganglion mass of mud crab, Scylla paramamosain

The brain and the thoracic ganglion of crustacean can synthesize and secrete gonad-stimulating hormone (GSH) which stimulates the maturation of gonad. In the previous experiments, sex steroid hormones (estradiol, testosterone, progesterone, etc.) have been detected from crustacean. However, the feedback regulation of sex steroid hormones on the brain and thoracic ganglion of crustacean has not been reported so far. In the present experiment, monoclonal antibodies were applied to investigate the immunorecognition of estrogen receptor (ER) and androgen receptor (AR) in the brain and thoracic ganglion mass of Scylla paramamosain. The results showed that the distribution of the immunopositive substances of ER and AR was extremely similar. They distributed in the protocerebrum, deutocerebrum and tritocerebrum of the brain, and mainly in protocerebrum. In the thoracic ganglion mass, immunopositive substances distributed in the subesophageal ganglion, thoracic ganglion and abdomen ganglion, and mostly in subesophageal ganglion. Immunopositive substances of ER and AR mostly existed in the cytoplasm of neurons. The present study will provide morphological evidence for the origin and evolution of ER and AR. In addition, the immunoreactivities of ER and AR suggested that the estrogen and androgen may be involved in the feedback regulation of crustacean neuroendocrine.     

Immunorecognition of estrogen and androgen receptors in the brain and thoracic ganglion mass of mud crab, Scylla paramamosain

The brain and the thoracic ganglion of crustacean can synthesize and secrete gonad-stimulating hormone (GSH) which stimulates the maturation of gonad. In the previous experiments, sex steroid hormones (estradiol, testosterone, progesterone, etc.) have been detected from crustacean. However, the feedback regulation of sex steroid hormones on the brain and thoracic ganglion of crustacean has not been reported so far. In the present experiment, monoclonal antibodies were applied to investigate the immunorecognition of estrogen receptor (ER) and androgen receptor (AR) in the brain and thoracic ganglion mass of Scylla paramamosain. The results showed that the distribution of the immunopositive substances of ER and AR was extremely similar. They distributed in the protocerebrum, deutocerebrum and tritocerebrum of the brain, and mainly in protocerebrum. In the thoracic ganglion mass, immunopositive substances distributed in the subesophageal ganglion, thoracic ganglion and abdomen ganglion, and mostly in subesophageal ganglion. Immunopositive substances of ER and AR mostly existed in the cytoplasm of neurons. The present study will provide morphological evidence for the origin and evolution of ER and AR. In addition, the immunoreactivities of ER and AR suggested that the estrogen and androgen may be involved in the feedback regulation of crustacean neuroendocrine.     

补肾活血方对更年期大鼠FSH的影响

目的　研究补肾活血方治疗更年期综合症的作用机制。方法　采用雌性SD大鼠更年期模型,观察补肾活血方对更年期SD大鼠子宫重量指数、阴道涂片的影响以及对更年期SD大鼠血清卵泡刺激素(FSH)含量的影响。结果　(1 )子宫重量指数与补肾活血方的剂量呈依赖性增加。(2 )更年期SD大鼠阴道上皮细胞出现不同程度的角化现象。(3)补肾活血方能明显降低更年期SD大鼠血清FSH的含量。结论　补肾活血方能降低更年期大鼠血清FSH的含量,有效改善更年期综合症。