Distribution of oxytocin hypothamic-picuitary-ovary axis in Guangxi local buffalo | 催产素在广西本地水牛下丘脑-垂体-卵巢轴的免疫组化定位
2010
Ling Zeji, Guangxi University, Nanning (China), Institute of Animal Science and Technology | Han Tao, Guangxi University, Nanning (China), Institute of Animal Science and Technology | Li Ruiming, Guangxi University, Nanning (China), Institute of Animal Science and Technology
To study the association of oxytocin (OT)’s distribution in hypothalamatic、pituitary and ovary,and understand how the OT secrete releasing in hypothalamus、pituitary and ovaries,the paraffin section immunohistochemistry SuperPicTureTM two step method was used to detect the distribution of OT in hypothalamatic-pituitary-ovary axis of five femal Guangxi local buffalo. The test results could provide morphology according to study the OT’s synthesis and mechanism of action,and could play reference and directions part in breeding Guangxi local buffalo. The test results display: oxytocin immuno reactive (OT-IR) neuronsw eremainly distributed arcuate nucleus, supraoptic nucleus and paraventricular nucleus, and OT-IR neurons was also found in ventromedial nucleus, ventrolateralis nucleus, suprachiasmaticus nucleus, dorsomedial nucleus, mamillary body, anterior hypothalamic nucleus and so on. The OT immunoactive production was found in pituitary and few OT-IR nerve fibers extended to post pituitary from hypophyseal stalk and medium eminence. In ovaries, OT immunoactive productions were only distributed in germinal epithelium cells，granulosa cells and lutein cells. Conclusion: The OT was first discovered in singulorum link of hypothalamatic-pituitary-ovary axis of Guangxi local buffalo. The OT immunoactive neurons were first discovered in every main nucleus of Guangxi local buffalo hypothalamus, especially distributed in arcuate nucleus，supraoptic nucleus and paraventricular nucleus.
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