神经肽Y在动情周期大鼠子宫中的分布

【目的】研究神经肽Y(Neuropeptide Y,NPY)免疫反应阳性物质在大鼠动情周期子宫中的分布情况及其变化规律。【方法】采用阴道涂片法鉴定发情周期,选取情期正常的20只雌性大鼠,均分为动情前期、动情期、动情后期和动情间期4组,处死各组大鼠,取子宫制作石蜡切片,经免疫组织化学SP法染色后,观察NPY在大鼠动情周期子宫中的分布及变化规律。【结果】在内膜层,大多数NPY免疫阳性产物位于细胞中,小部分位于点状和细丝状纤维中。在肌层,NPY免疫阳性产物主要位于NPY纤维中。NPY免疫阳性产物相对表达量的t检验结果表明,子宫内膜NPY在动情期和动情间期的表达较动情前期显著减少(P0.05),较动情后期极显著减少(P0.01);子宫肌层NPY在动情后期的表达较动情期显著回升(P0.05),在动情间期的表达较动情后期极显著减少(P0.01)。【结论】NPY在不同生理时期大鼠子宫中的表达分布存在一定规律性,可能与其生理调节功能有关。

Distribution of Neuropeptide Y in uterus of rats during estrus cycle

[Objective] The research was done to study the distribution and expression variation of Neuropeptide Y(NPY)in uterus of the rats during estrus cycle.[Method] Twenty mature female rats at normal estrus cycle were evenly divided into 4 groups:preoestrus group,estrum group,metoestrus and diestrus group.Estrus cycle was judged by vaginal smear,the expression of NPY in uterus of the rats during estrus cycle was studied by immunohistochemical SP method.[Result] In endometrium layer,most NPY immunoreactive product...