摘除卵巢绵羊经雌激素处理后子宫催产素受体的测定

给摘除卵巢绵羊埋植雌激素后，采取其子宫肉阜、肉阜间子宫内膜、肌层和其他器官组织样品用于催产素受体（ｒＯＴ）测定。３种子宫组织和输卵管含有ｒＯＴ；阴道、肌肉、小肠、肝组织中ｒＯＴ浓度不可测。子宫组织中ｒＯＴ仅具有单一类型的结合点，Ｋｄ值为１．３５ｎｍｏｌ／Ｌ，最大结合容量为３０２．８ｆｍｏｌ／ｍｇ蛋白。     

催产素免疫反应神经元在鸡下丘脑的定位——PAP法研究

应用免疫组化PAP法(非标记抗体过氧化物酶-抗过氧化物酶法)研究了鸡下丘脑催产素(Oxytocin,OT)免疫反应阳性神经元的分布.结果,OT阳性神经元存在于下丘脑室旁核各亚核、视前室旁核、视上核、视前大细胞核、下丘脑外侧核、室周核、室周弓状核,在下丘脑背侧区、视前外侧区和丘脑背外侧核也有零星的OT阳性神经元,视上背侧交叉和正中隆起存在大量的OT阳性纤维和纤维末梢.此外,还观察到视前区和下丘脑前部脑基底表面以及视上核的外缘有OT阳性神经元和纤维(?)达脑的外表,在第三脑室室管膜上存在OT阳性神经元,室旁核的OT阳性细胞突起伸入到室管膜上或突出于第三脑室室腔。结果表明,OT阳性神经元在下丘脑的分布较广泛,OT向脑脊液的释放可能是多途径的.     

奶山羊下丘脑中催产素神经元的分布——ABC法研究

分泌催产素的神经元主要分布在室旁核(59.1％)和视上核(17.9％),此外在穹窿周核、腹内侧核、腹外侧核、交叉上核和乳头体外侧核较多(各约占2％～4％),有少量分布在弓状核、室周核、背内侧核、环核、前连合核、下丘脑前核、下丘脑外侧区,乳头体上核、乳头体内侧核(各1％左右)。阳性神经纤维仅见于室旁核、下丘脑前核、视上核、交叉上核等少数核团,在正中隆起和第三脑室室周可见到一定数量的阳性神经纤维。     

奶山羊周期黄体中催产素的免疫组化定位

运用免疫组化 ABC法对奶山羊周期黄体中催产素 (OT)的定位进行了研究。结果表明 ,奶山羊周期黄体中存在数量较多的 OT免疫反应阳性细胞。OT阳性细胞根据胞质内反应颗粒着色的深浅可分为强阳性、中等阳性和弱阳性细胞 3种。阳性细胞在形态上以圆形、卵圆形为主 ,另有相当数量的细胞具有突起 ,小梁两侧及黄体中央近腔区域的阳性细胞则多呈现为长梭形。从分布上看 ,强阳性细胞主要分布于黄体周边 ,少数散布于中央区域 ,中等阳性及弱阳性细胞则均匀分布于整个黄体组织中。连续切片 HE染色的对照观察显示 ,奶山羊周期黄体中的 OT主要是由大黄体细胞分泌 ,小黄体细胞也可产生少量的 OT。     

缩宫素联合生化丸治疗药物流产后阴道出血43例临床分析

目的观察缩宫素联合生化丸对药物流产后阴道出血量和出血时间的影响。方法选取服用米非司酮加米索前列醇药物流产者101例,随机分为观察组与对照组,观察组药物流产后给予缩宫素联合生化丸,对照组药物流产后给予缩宫素,比较两组药物流产后阴道出血量及出血时间。结果观察组平均出血天数显著低于对照组(P0.05);观察组药物流产后阴道出血量大于月经量者显著低于对照组(P0.05),差异有统计学意义。结论药物流产术后加用缩宫素和生化丸可显著减少药物流产后阴道出血。     

Oxytocin receptors in dioestrous and anoestrous canine uteri

The aim of the study was to localize oxytocin receptors (OTR) and measure mRNA expression of OTR in the canine uterus with and without the influence of progesterone. Uterine samples were taken from nine anoestrous and eight dioestrous bitches during ovariohysterectomy. Histological changes were evaluated in haematoxylin and eosin (HE)‐stained samples. Purified polyclonal antibody for OTR was used in immunohistochemistry to localize receptors in uterine layers. Relative mRNA concentration of OTR was evaluated with real‐time PCR from full‐thickness uterine samples taken from the middle horn and the body. Myometrial smooth muscle cells, endometrial luminal epithelium (LE) and deep and superficial glandular epithelium were positively stained for oxytocin receptors in non‐pregnant animals. No significant difference in staining intensity was detected between uterine middle horn and body. However, the staining intensity of LE was significantly higher in dioestrous than in anoestrous uteri (p < .05). Leucocytes and endothelium of blood vessels were also positively stained for OTR. Real‐time PCR showed no significant differences in OTR mRNA expression between the middle horn and the body of the uterus, or between anoestrous and dioestrous uterus. No correlation was noted between OTR mRNA expression and blood progesterone concentration. In conclusion, despite the apparent inactivity, the uterus of the non‐pregnant bitch expresses OTR. The distribution or relative expression of OTR does not differ between uterine horn and body in dioestrus or anoestrus except in LE. LE may have more oxytocin‐dependent activity during dioestrus than anoestrus.