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家蚕雌蛾粉对阳虚雌性小鼠的药理作用试验 总被引：1，自引：0，他引：1
采用肌肉注射氢化可的松建立阳虚雌性小鼠模型,灌胃给予不同剂量家蚕雌蛾粉,并设正常对照组和模型对照组,通过对小鼠自主活动次数、扭体反应次数、游泳存活时间、体重、肝脏系数、脾脏系数、子宫卵巢系数等指标的考察,研究家蚕雌蛾粉的药理作用。发现家蚕雌蛾粉能明显改善阳虚雌性小鼠活动和体重等一般状态,具有明显的精神恢复与镇痛的作用;可提高小鼠游泳存活时间,表现出增强耐力的作用;同时可促进雌性小鼠免疫器官与生殖器官的发育。家蚕雌蛾粉具有明显的类雌激素样生物学活性。 相似文献
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家蚕雌蛾粉对四氧嘧啶模型小鼠抗氧化水平的影响 总被引：1，自引：0，他引：1
为明确家蚕雌蛾的药用价值,采用腹腔注射四氧嘧啶法建立抗氧化模型小鼠,灌胃给予不同剂量的家蚕雌蛾粉,通过对小鼠血清及肝脏的超氧化物歧化酶(SOD)、丙二醛(MDA)、谷胱甘肽过氧化物酶(GSH-Px)等生化指标测定,研究家蚕雌蛾粉的体内抗氧化作用。结果表明家蚕雌蛾粉可明显降低模型小鼠血清及肝脏的MDA含量,高剂量组(8 g/kg)的MDA含量降低至正常对照组的水平,家蚕雌蛾粉还可提高模型小鼠血清及肝脏的SOD、GSH-Px活性,中剂量(4 g/kg)、高剂量组的提高幅度达极显著水平。实验结果提示家蚕雌蛾粉具有明显的体内抗氧化作用。 相似文献
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桃仁及其复方合剂对小白鼠子宫作用的机理研究 总被引：2，自引：0，他引：2
本研究对桃仁及其复方合剂作用于小白鼠离体子宫及已抑制或兴奋的子宫进行了试验。结果表明：桃仁液对小白鼠离体子宫具有兴奋作用，其兴奋作用与兴奋组织胺受体H1，M受体，肾上腺素α受体有关。但其复方合剂对小白鼠离体子宫有舒张作用，能对抗缩宫素，马来酸麦角新碱，乙酰胆碱引起的子宫收缩。 相似文献
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《农村养殖技术》2004,(9):30-30
农业部公布,有21类近40个品种的原料药及其单方、复方制剂产品于2002年4月15日一律停止使用。序号123456789101112131415161718192021兽药及其化合物名称β-兴奋剂类:克仑特罗Clenbuterol、沙丁胺醇Salbutamol、西马特罗Cimaterol及其盐、脂及制剂性激素类:已烯雌酚Diethylstilbestrol及其盐、脂及制剂具有雌激素样作用的物质:玉米赤霉醇Zeranol、去甲雄三烯醇酮Trenbolone、醋酸甲孕酮Mengestrol Acetate及制剂氯霉素Chloramphenicol succi-nate、及其盐、脂(包括琥珀氯霉素)及制剂氨苯矾Dapsone及制剂硝基呋喃类:呋喃唑酮Furazolidon… 相似文献
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雌激素及其受体对动物乳腺上皮细胞泌乳性能的影响 总被引：6，自引：5，他引：1
雌激素是一种在较高等动物和人体内存在的内源性雌性激素,雌激素主要有雌二醇、雌三醇和雌酚等。雌激素对雌性哺乳动物生殖发育及泌乳能力的影响已经成为近年来的研究热点之一。作者对雌激素及其受体对雌性哺乳动物乳腺上皮细胞的作用作一简要综述。 相似文献
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本试验利用体喷雌二醇和睾丸酮于雌、雄蚕蛾,观察外源性性激素对家蚕产卵速度、交配速度以及卵质量的影响。结果表明:性激素处理后,能显著提高蚕蛾产卵速度,投蛾3小时内的产卵量以雄激素处理雌蛾最显著,较对照组增加4.2倍(P<0.05),雌激素处理雌蛾则增加3.6倍(P<0.05);而雌、雄激素处理雄蛾则分别较对照组增加2.8倍和2.0倍(P>0.05)。结果还表明性激素处理使交配成对率显著提高,雌激素处理雌蛾,15分钟成对率达100%,雄激素处理雄蛾10分钟后基本都已成对,显著高于对照组;余二组亦有不同程度的提高。试验调查还表明性激素处理蚕蛾,所产卵的孵化率及蚁蚕的生命率与对照组无差异,说明性激素不影响蚕卵质量,并且具有降低不受精卵率的作用。 相似文献
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正家蚕属于卵生动物,卵生动物雌性第二性征开始的重要变化之一,就是卵黄原蛋白(Vitellogenin,Vg)等雌特异高量表达蛋白的合成。高等卵生动物的卵黄原蛋白对雌激素的响应是毋庸置疑的,虽然近年来又发现雌激素对许多软体动物和水生无脊椎动物Vg同样具有调控作用,但到目前为止,关于脊椎动物雌激素对昆虫卵黄原蛋白调控的研究并不多。卵黄原蛋白对家蚕来说究竟有多重要?雌激素对高等动物许多生理过程都具有显著的调 相似文献
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Evidence for the non-involvement of the uterus in the lifespan of the corpus luteum in the cyclic dog 总被引：1，自引：0，他引：1
Progesterone levels in peripheral blood of dogs were analysed during the cycle in which hysterectomy (n = 5) or sham surgery (n = 3) was performed as well as during the cycle of dogs (n = 5) hysterectomized at least one year prior to this study; the data were compared with the findings in control dogs (n = 3). The averages of the duration of the luteal period observed in the three experimental groups were not significantly different from those of control dogs. Immediately after surgery, the progesterone level decreased from 25 to 50% of the presurgical level, but returned to presurgical level in about four days. Prolactin levels were elevated for about 30 h after surgery. Nevertheless, the averages of the mean prolactin levels for each animal during the luteal period of the experimental groups were not significantly different from those of control dogs. It is concluded that in the dog, the uterus is not involved in the lifespan of the cyclic corpus luteum. 相似文献
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Meschan EM Peham C Schobesberger H Licka TF 《Veterinary journal (London, England : 1997)》2007,173(3):578-584
As there is no statistical evidence that saddle fit influences the load exerted on a horse's back, this study was performed to assess the hypothesis that the width of the tree significantly alters the pressure distribution on the back beneath the saddle. Nineteen sound horses were ridden at walk and trot on a treadmill with three saddles differing only in tree width. Kinetic data were recorded by a sensor mat. A minimum of 14 motion cycles were used in each trial. The saddles were classified into four groups depending on fit. For each horse, the saddle with the lowest overall force (LOF) was determined. Saddles were classified as "too-narrow" if they were one size (2 cm) narrower than the LOF saddle, and "too-wide" if they were one size (2 cm) wider than the LOF saddle. Saddles two sizes wider than LOF saddles were classified as "very-wide". In the group of narrow saddles, the pressure in the caudal third (walk 0.63 N/cm(2)+/-0.10; trot 1.08 N/cm(2)+/-0.26) was significantly higher compared to the LOF saddles (walk 0.50 N/cm(2)+/-0.09; trot 0.86 N/cm(2)+/-0.28). In the middle transversal third, the pressure of the wide saddles (walk 0.73 N/cm(2)+/-0.06; trot 1.52 N/cm(2)+/-0.19) and very-wide saddles (walk 0.77 N/cm(2)+/-0.06; trot 1.57 N/cm(2)+/-0.19) was significantly higher compared to LOF saddles (walk 0.65 N/cm(2)+/-0.10/ 0.63 N/cm(2)+/-0.11; trot 1.33 N/cm(2)+/-0.22/1.27 N/cm(2)+/-0.20). This study demonstrates that the load under poorly fitting saddles is distributed over a smaller area than under properly fitting saddles, leading to potentially harmful pressures peaks. 相似文献
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嗅源是军犬嗅觉作业训练的依据.军犬鉴别中嗅源能力的培养在整个鉴别训练中占有重要地位,关系到鉴别训练的成败和鉴别能力的提高.所以,军犬在嗅认嗅源时必须按照训犬员的指令充分、细致地感受嗅源气味,并且对嗅源气味产生兴奋反应.如何培养军犬充分嗅认嗅源以及及时解决嗅认过程中出现的问题,成为我们进行鉴别训练的关键.…… 相似文献
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