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1.
ObjectiveStudy the effect of electroacupuncture on permenopausal depressive disorder (PDD) model through the peri-menopausal depression model mice.MethodsKM female mice were selected. Except for the blank group (BG), the other groups of mice were removed by castration method. The mice of PDD was prepared by combining chronic unpredictable stimulation. Mice in the model group (MG) were not treated and fed normally. The western medicine group (WG) was given the corresponding drug for treatment. The electroacupuncture group (EAG) was given the electroacupuncture for treatment, and consecutive for 28 days. The levels of T, E2, FSH and LH in serum of mice were measured, and the brain tissue of 5-HT, DA and NE level were measured. Through the HE staining observed the morphological changes of mice hypothalamus.ResultsCompared with MG, EAG could increase the number of spontaneous activities of PDD model mice, the level of T, E2 in serum and the level of 5-HT, DA, NE in brain tissue was improved, and the level of FSH, LH in serum was reduced, and the hypothalamic lesions was improved.ConclusionElectroacupuncture could improve the activity and memory of PDD mice, adjust the disorder of sex hormone, and increased the levels of monoamine transmitters (5-HT, NE, DA), and it could effectively improve the behavior and related biochemical indexes of PDD, and thus play an important therapeutic role.  相似文献   

2.
PurposeTo observe the effect of cynomorium total flavone on the depression model of perimenopausal rat and to analyze the action characteristics of cynomorium total flavone on depression of rat with perimenopausal syndrome.MethodDuplicate the model of rat with perimenopausal depression based on the combined method of incomplete castration and chronic stimulation, and keep drug administration for 35d. And then measure related behavior indicators and the change of biochemical index level in serum and brains; measure the estrogen/androgen receptor (ER/AR) in related tissues and the ERmRNA expression in hypothalamus.ResultIt can be seen that cynomorium total flavone can significantly improve the behavior indicators of rat with perimenopausal depression; obviously or significantly change the level of related biomedical indexes in serum and brains of perimenopausal depressed rat; obviously or significantly increase the expression of ER/AR in related tissues of perimenopausal depressed rat; obviously or significantly increase the ERmRNA expression in hypothalamus.ConclusionCynomorium total flavone can adjust hypothalamic-pituitary-gonadal axis by increasing E2, and make related biomedical indexes and hormone receptors tend to be normal, so as to relieve perimenopausal syndrome and perimenopausal syndrome with depression.  相似文献   

3.
To study the effect of raspberry total flavonoids on perimenopausal model in mice. Blank group, sham operation, and the rest of the mice made the menopausal model. Choose 72 mice castrated completely random divided into 6 groups for the experiment, respectively: model group, gengnianan (GNA) capsule group, soybean isoflavone soft (SIS) capsule group, high, mid and low dose group of total flavonoids of raspberry (TFR). Animals in each group were given the corresponding drugs tenth days after operation, and were given intragastrical administration of once a day for continuous administration of 21 days. Each group of mice in the administration of 18 days to determine the number of autonomic activities within 5 min, in the administration of 19–20 days to determine the incubation of the mice first entry into the darkroom and the number of shocks into the darkroom within 5 min. At 2 h after the last administration (fasting for 12 h), mice were sacrificed and serum was collected. Serum levels of E2, T, LH and FSH were measured. Dissect the uterus, uterus, thymus and spleen. Weigh the wet weight and calculate the organ index, the morphological changes of uterus, thymus and spleen were observed. The results showed that the TFR had a good therapeutic effect on the perimenopausal model of mice after giving a high, mid and low dose of raspberry flavonoids for some time.  相似文献   

4.
AimsExplore the effects of dodder total flavone on polycystic ovary syndrome (PCOS) rat models induced by dehydroepiandrosterone (DHEA) combined human chorionic gonadotropin (HCG).MethodsExcept the blank group, the rest of the rats were injected with DHEA 6 mg/100 g on the back of the neck and 1.5 IU HCG each day, for 21 consecutive days. On the 16th day of modeling, vaginal smear was performed to select the model rats, which were randomly divided into model group, dacin-35 group, large, middle and small dose dodder total flavonoids groups, and given the medicine for three weeks. At the end of the last administration, take samples, so as to calculate the ovaries and uterus indexes, measure serum LH/FSH ratio, P, PRL and INS levels, fixed the uterus and pancreas in 10% formalin solution and stained with HE to observe the morphological changes of the organs. And measure the expression of TNF-α and IGF-l proteins in ovaries by immunohistochemistry.ResultsCompared with the blank group, ovarian and uterine indexes, serum LH/FSH ratio, serum PRL and INS levels, ovary TNF-α and IGF-l protein expression were significantly increased, and significant pathological changes were observed in the uterine and pancreatic tissues in model group (P < 0.01). While the serum P level decreased significantly (P < 0.01), Compared with the model group, the ovarian and uterine indexes, serum LH/FSH ratio, serum P, PRL and INS levels, ovary TNF-α protein expression were significantly decreased in large, middle and small dose dodder total flavonoids groups (P < 0.01); The expression of IGF-1 protein was decreased and uterus pathological changes were improved in different extents (P < 0.01 or P < 0.05), pancreas pathological changes were improved significantly (P < 0.01).ConclusionPCOS rat models was successfully replicated. Dodder total flavone can protect PCOS rats induced by DHEA combined HCG by different action pathways.  相似文献   

5.
目的:比较补肾活血方剂与曼月乐治疗围绝经期功血的疗效及血清激素水平的改善情况。方法:选择2013年7月至2016年11月我院妇科收治的围绝经期功血患者92例为研究对象,随机分为A组和B组,每组各46例。A组口服补肾活血方剂,B组宫内放置曼月乐,两组均持续治疗3个周期。观察两组的疗效及不良反应发生率,检测两组的血清激素水平及子宫内膜厚度(ET)、血红蛋白(Hb)水平。血清激素指标包括促卵泡生成素(FSH)、黄体生成素(LH)、孕酮(P)及雌二醇(E2)。结果:两组的总有效率比较差异无统计学意义(P0.05)。治疗后,两组的血清FSH、LH、E2、P、ET和Hb水平均较治疗前显著降低(P0.01),且B血清FSH、LH、E2、P和ET水平均显著低于同期的A组(P0.01),两组的Hb水平比较差异无统计学意义(P0.05)。B组(15.22%)的不良反应发生率显著高于A组(0%)(P0.01)。结论:补肾活血方剂与曼月乐对围绝经期功血的疗效相当,但曼月乐对血清激素水平及子宫内膜增厚的改善作用更强,补肾活血方剂的安全性更高。  相似文献   

6.
The purpose of the present study was to evaluate the effects of alpha-2u-globulin, a sex-dependent male rat urinary protein on pituitary-gonadal functions and hypothalamic monoamine contents in male mice. Adult male mice, maintained under standardized laboratory conditions (L:D, 14:10) were injected subcutaneously with alpha-2u-globulin at a dose of 1 mg/animal/day or with vehicle daily for 14 days and killed 16 h after the last injection. Plasma levels of luteinizing hormone (LH), follicle-stimulating hormone (FSH), testosterone (T) and testicular levels of T were measured by radioimmunoassays. The concentrations of norepinephrine (NE), dopamine (DA) and serotonin (5-HT) in medial basal hypothalamus (MBH) and anterior hypothalamus (AH) were measured by high performance liquid chromatography. Administration of alpha-2u-globulin led to a significant increase in plasma FSH and LH levels (P less than 0.05) as well as in plasma and testicular T levels (P less than 0.025). In the MBH of alpha-2u-globulin treated mice, there were significant elevations of NE (P less than 0.025), DA (P less than 0.01) and 5-HT (P less than 0.025) contents. In the AH, both DA (P less than 0.025) and 5-HT (P less than 0.01) contents were decreased while NE content remained unaltered. These results indicate that administration of alpha-2u-globulin can lead to a significant stimulation of pituitary-testicular axis and that this effect may be mediated through alteration of hypothalamic monoamines.  相似文献   

7.
摘要 目的:研究桂枝茯苓胶囊联合米非司酮对子宫肌瘤患者的临床疗效及对血清血管内皮生长因子(VEGF)、基质金属蛋白酶-9(MMP-9)、糖类抗原(CA125)、性激素[卵泡雌激素(FSH)、黄体生成素(LH)、雌二醇(E2)]水平的影响。方法:选取2014年5月至2015年4月我院收治的子宫肌瘤患者76例,根据患者入院顺序分为观察组和对照组,38例每组。对照组使用米非司酮完成治疗,观察组在对照组治疗基础上联合桂枝茯苓胶囊完成治疗。比较两组患者临床疗效,治疗前后血清VEGF、MMP-9、CA125、E2水平的变化。结果:治疗后,观察组临床总有效率显著高于对照组[89.47%(34/38)比60.53%(23/38)](P<0.05);两组患者血清FSH、LH、E2、VEGF、MMP-9、CA125水平均较治疗前显著降低(P<0.05),和对照组相比,观察组以上指标显著降低(P<0.05)。观察组和对照组不良反应的发生率比较差异无统计学意义(P>0.05)。结论:桂枝茯苓胶囊联合米非司酮治疗子宫肌瘤可显著提高其临床疗效,且安全性高,可能与其能有效降低子宫肌瘤患者血清VEGF、MMP-9、CA125、FSH、LH、E2水平有关。  相似文献   

8.
摘要 目的:探讨复方玄驹胶囊联合枸橼酸氯米芬和维生素E对男性肾阳虚型不育症的治疗效果。方法:选择2017年1月-2019年12月于我院就诊并辨证为肾阳虚型男性不育症患者120例,采用随机数字表法分为研究组和对照组。对照组58例患者给予枸椽酸氯米芬和维生素E治疗,研究组62例患者在此基础上加用复方玄驹胶囊,比较两组临床疗效、治疗前后精子形态正常率、精液量、精子密度、前向运动率、精子液化时间、睾酮(testosterone,T)、黄体生成激素(luteotropic hormone,LH)、卵泡刺激素(follicle stimulatin hormone,FSH)及雌二醇(17β-estrodiol,E2)水平的变化。结果:治疗后,研究组患者的总有效率为85.48 %,显著高于对照组(72.41 %,P<0.05)。与治疗前相比,两组患者精子形态正常率、精液量、精子密度和前向运动率均显著升高,而精子液化时间明显缩短(P<0.05),研究组患者精子形态正常率、精液量、精子密度和前向运动率均显著高于对照组,而精子液化时间较对照组显著缩短(P<0.05)。与治疗前相比,两组患者血清T、LH、FSH水平显著增加,E2水平无明显变化;与对照组相比,研究组血清LH水平显著增加(P<0.05),T和FSH水平无显著差异。结论:复方玄驹胶囊联合枸橼酸氯米芬和维生素E对男性肾阳虚型不育症患者有较好的疗效,可显著提高精子质量,改善患者生殖激素水平。  相似文献   

9.
摘要 目的:研究二甲双胍联合炔雌醇环丙孕酮片治疗多囊卵巢综合征(polycystic ovarian syndrome,PCOS)患者的临床疗效及对患者糖脂代谢的影响。方法:选取2018年1月~2020年12月在我院接受治疗的60例PCOS患者作为研究对象,随机数表法均分为对照组和研究组:对照组患者接受炔雌醇环丙孕酮片治疗,而研究组患者接受二甲双胍联合炔雌醇环丙孕酮片治疗。比较两组患者治疗后排卵和妊娠情况,并比较治疗前后性激素水平和糖脂代谢的变化。结果:研究组治疗总有效率为83.33%,显著高于对照组63.33%的治疗总有效率(P<0.05)。治疗前,两组患者血清卵泡刺激素(Follicle Stimulating Hormone, FSH)、黄体生成素(Luteinizing hormone, LH)、雌二醇(Estradiol, E2)、睾酮(Testosterone, T)等性激素水平,空腹血糖(fasting plasma glucose, FPG)、空腹胰岛素(Fasting serum lisulin, FINS)、口服葡萄糖耐量试验(oral glucose tolerance test, OGTT)2 h血糖和胰岛素等糖代谢指标以及甘油三酯(Triglycerides, TG)、胆固醇(Total cholesterol, TC)、高密度脂蛋白(High density lipoprotein, HDL)和低密度脂蛋白(Low density lipoprotein, LDL)等脂代谢指标脂代谢指标比较均无显著差异(P>0.05);治疗后,所有患者血清FSH、LH、T、E2、TG、LDL、TC、FPG、FINS、OGTT 2h PG和OGTT 2h INS均较治疗前显著降低(P<0.05),而HDL较治疗前升高(P<0.05);研究组患者治疗后血清FSH、LH、T、E2、TG、LDL、TC、FPG、FINS、OGTT 2h PG和OGTT 2h INS均较显著低于对照组患者(P<0.05),而HDL显著高于对照组患者(P<0.05)。结论:二甲双胍联合炔雌醇环丙孕酮片治疗多囊卵巢综合征临床效果显著,可有效改善患者糖脂代谢水平。  相似文献   

10.
A R Sheth  P G Shah 《Life sciences》1978,22(23):2137-2140
Daily oral administration of bromocriptine (50 μg/kg) to adult male rats, suppressed serum prolactin levels. The pituitary prolactin levels remained unaltered. Serum FSH levels as well as pituitary FSH levels showed no significant change as compared to the controls. Serum LH levels were significantly decreased in spite of the high pituitary LH levels, in bromocriptine treated rats. In the drug treated rats, in vitro sensitivity of the pituitary to the exogenous LH-RH was not altered; whereas hypothalamic LH-RH content was considerably lowered. These observations suggest the possible effect of bromocriptine on the synthesis of LH-RH in the hypothalamus which leads to the accumulation of LH in the pituitary and decline of serum LH.  相似文献   

11.
摘要 目的:分析坤泰胶囊联合米非司酮治疗围绝经期功能失调性子宫出血(DUB)的疗效及对碱性成纤维细胞生长因子(bFGF)、血管内皮细胞生长因子(VEGF)水平的影响。方法:选取2021年10月-2022年10月在合肥市第一人民医院滨湖院区妇科门诊就医的88例围绝经期DUB患者作为研究对象,采用随机数据表法将其分为研究组和对照组,每组各44例,两组患者入组后均给予常规对症治疗,对照组患者在此基础上给予口服米非司酮胶囊,用量为每日1次,每次10 mg。研究组患者在对照组疗法的基础上给予口服坤泰胶囊,用量为每日3次,每次2 g。两组患者均连续服用3个月。对两组患者的疗效指标及治疗前和治疗3个月时的子宫内膜厚度、血清卵泡刺激素(FSH)、黄体生成素(LH)、泌乳素(PRL)、雌二醇(E2)、bFGF、VEGF水平进行比较。对两组患者治疗期间的不良反应进行比较。结果:研究组患者的疗效等级分布优于对照组,有效率高于对照组(P<0.05)。两组患者治疗前的子宫内膜厚度及血清性激素、bFGF、VEGF水平的差异均无统计学意义(P>0.05),在治疗3个月末,两组患者的子宫内膜厚度及血清FSH、LH、PRL、E2水平均较治疗前降低,血清bFGF、VEGF水平均较治疗前升高(P<0.05),研究组患者在治疗3个月末的子宫内膜厚度及血清FSH、LH、PRL、E2水平均低于对照组,血清bFGF、VEGF水平均高于对照组(P<0.05)。两组不良反应均为轻度,在未经治疗的情况下患者可耐受,未见因不良反应而中断治疗的患者。两组各项不良反应发生率和不良反应总发生率的差异均无统计学意义(P>0.05)。结论:在围绝经期DUB的治疗中,采用坤泰胶囊联合米非司酮的中西医治疗方案,在临床疗效优于单用米非司酮方案,能够更加显著地改善血清激素水平、抑制子宫内膜增生、提升bFGF、VEGF等血管生成因子的表达水平。  相似文献   

12.
为了解虎纹蛙促性腺激素分泌的调节机理,用离体静态培育系统和放射免疫测定法,研究了多巴胺(DA)、雌二醇(E2)和睾酮(T)对雌性虎纹蛙离体脑垂体薄片促黄体激素(LH)和促卵泡激素(FSH)分泌活动的影响。结果表明:0.1~10μmol/L的DA对成熟前期和冬眠期虎纹蛙离体脑垂体型薄片的LH及FSH的释放都有抑制作用,并且随着DA浓度的增加,抑制作用逐渐增强。1和10μmol/L的E2显著刺激成熟前  相似文献   

13.
目的:讨论乳腺癌患者术后辅助化疗对患者激素水平及月经状况的影响。方法:收集我院2014年1月-2015年8月初诊绝经前乳腺癌患者78例,绝经后乳腺癌患者50例,检测化疗前及化疗结束后的雌二醇(E2)、黄体生成素(LH)、卵泡刺激素(FSH)水平,随访绝经前乳腺癌患者化疗期间及化疗后月经变化情况。结果:绝经前乳腺癌患者化疗后E2水平明显下降,FSH、LH水平明显升高,差异具有统计学意义(P0.05),绝经后乳腺癌患者化疗后E2水平无明显变化(P0.05),FSH、LH水平均下降,差异具有统计学意义(P0.05)。绝经前乳腺癌患者三个不同年龄段化疗后E2水平降低,而FSH、LH水平升高,差异具有统计学意义(P0.05),但三个不同年龄段患者化疗前后性激素水平组间比较均无统计学差异(P0.05)。绝经前乳腺癌患者三个不同年龄段化疗后闭经率比较差异具有统计学意义(P0.05)。绝经前乳腺癌患者化疗后闭经患者E2水平明显低于未闭经患者,FSH、LH水平明显高于未闭经患者,差异具有统计学意义(P0.05)。结论:化疗可影响乳腺癌患者E2、FSH、LH水平,导致患者闭经,闭经情况与患者年龄有关。  相似文献   

14.
目的:探讨多囊卵巢综合征(polycystic ovary syndrome,PCOS)患者血清抗苗勒管激素(anti-Müllerian hormone,AMH)水平与肥胖、胰岛素抵抗(insulin resistance,IR)程度的相关性。方法:选择在我院生殖中心就诊的139名PCOS患者为研究组,并以月经周期正常、因输卵管因素或男性因素导致不孕者48名作为对照组。检测和比较PCOS患者的血清AMH、性激素水平及代谢指标,分析血清AMH水平与PCOS患者肥胖、胰岛素抵抗程度的关系。结果:PCOS组患者体质量指数(body mass index,BMI)、黄体生成素(luteinizing hormone,LH)、睾酮(testosterone,T)、垂体泌乳素(pituitary prolactin PRL)、空腹血糖(fasting plasma glucose,FPG)、空腹胰岛素(fasting insulin,FINS)、稳态模型胰岛素抵抗指数(homenostasis models assessment-insulin resistance index,HOMA-IR)的水平均显著高于对照组(P0.05),PCOS组和对照组年龄、卵泡刺激素(follicle stimulating hormone,FSH)比较差异无统计学意义(P0.05)。PCOS各表型组的血清AMH浓度、LH/FSH比值均明显高于对照组(P0.05)。肥胖组患者的AMH浓度低于正常体重组,BMI、FPG、FINS、HOMA-IR、甘油三脂(triglycerides,TG)水平均高于正常体重组,LH、LH/FSH、高密度脂蛋白(high density lipoprotein,HDL-C)水平均低于正常体重组(P0.05)。高HOMA-IR组患者的血清AMH浓度、LH、LH/FSH水平均明显低于低HOMA-IR组,BMI、T、FPG、FINS、TG、低密度脂蛋白(low density lipoprotein,LDL-C)水平均高于低HOMA-IR组(P0.05)。PCOS患者血清AMH浓度和BMI及HOMA-IR均存在显著负相关。结论:PCOS患者血清的AMH水平较对照组明显升高,与其肥胖、胰岛素抵抗(IR)程度呈显著负相关。  相似文献   

15.
摘要 目的:探讨优思悦对硫酸脱氢表雄酮(dehydroepiandrosterone,DHEA)诱导的多囊卵巢综合征模型大鼠体内性激素:睾酮( testosterone,T)、雌二醇( estradiol,E2 )、促黄体生成素( luteinizing hormone,LH)及卵泡刺激素( follicle-stimulating hormone,FSH)及PI3K /AKT信号通路的的影响。方法:将60只雌性SD大鼠随机均分为3组,包括空白组、模型组及治疗组。空白组每日颈部皮下注射0.2 mL大豆油,其余各组每日颈部皮下注射DHEA 60 mg/kg+0.2 mL大豆油,持续注射35 d。造模第21 d时,每日上午制备大鼠阴道涂片,将其放置在显微镜下观察,根据细胞形态判定大鼠的动情周期,无动情周期规律视为造模成功。造模第36 d时,连续4 w对大鼠进行灌胃,每天一次。检测大鼠阴道分泌物的细胞形态、大鼠卵巢中卵泡发育的情况。放射免疫法测定大鼠血清中T、E2、LH、FSH的含量;RT-qPCR法检测大鼠卵巢组织中PI3K /AKT信号通路相关因子(IRS-1、AKT-2、CSK-3β、GLUT-4 mRNA和PTEN mRNA)的表达变化。结果:空白组大鼠的动情周期有规律性,而模型组大鼠的动情周期失去规律性,且模型组大鼠卵巢中的卵泡呈囊状扩张,血清中T、LH水平明显升高(P<0.05),同时卵巢组织中的IRS-1、AKT-2、CSK-3β、GLUT-4 mRNA表达减少(P<0.05),PTEN mRNA表达增多(P<0.05)。与模型组比较,优思悦可改善PCOS模型大鼠动情周期,降低血清T、LH水平(P<0.05),改善卵泡发育,减少囊状扩张卵泡的形成,上调IRS-1、AKT-2、CSK-3β、GLUT-4 mRNA表达量,下调PTEN mRNA 表达量。结论:优思悦可有效治疗DHEA诱导的PCOS模型大鼠,与卵巢中的PI3K /AKT信号通路相关因子的基因表达相关。  相似文献   

16.
摘要 目的:分析血清骨钙素(OC)、血小板反应蛋白-1(TSP-1)、血管生成素样蛋白2(ANGPTL2)与多囊卵巢综合征(PCOS)患者胰岛素抵抗(IR)、性激素和卵巢间质血流的关系。方法:选取2020年1月~2022年4月内蒙古自治区人民医院收治的125例PCOS患者(PCOS组),根据稳态模型评估(HOMA)-IR分为IR组68例和非IR组57例,另选取同期67例体检健康成年女性(对照组)。收集研究对象HOMA-IR和性激素、卵巢间质血流指标,采用酶联免疫吸附法检测血清OC、TSP-1、ANGPTL2水平。比较PCOS组与对照组、IR组与非IR组之间性激素、卵巢间质血流指标、血清OC、TSP-1、ANGPTL2水平的差异。采用Pearson/Spearman相关性分析法分析PCOS患者血清OC、TSP-1、ANGPTL2水平与HOMA-IR、性激素和卵巢间质血流指标的相关性。结果:PCOS组HOMA-IR、黄体生成素(LH)、LH/促卵泡生成素(FSH)、睾酮(T)、收缩期峰值速度(PSV)、ANGPTL2水平高于对照组,搏动指数(PI)和阻力指数(RI)、OC、TSP-1水平低于对照组(P<0.05)。IR组LH、LH/FSH、T、PSV、ANGPTL2水平高于非IR组,PI、RI、OC、TSP-1水平低于非IR组(P<0.05)。Pearson/Spearman相关性分析显示,PCOS患者血清OC、TSP-1水平与HOMA-IR、LH、LH/FSH、T、PSV呈负相关,与PI、RI呈正相关(P<0.05);血清ANGPTL2水平与PCOS患者HOMA-IR、LH、LH/FSH、T、PSV呈正相关,与PI、RI呈负相关(P<0.05)。结论:血清OC、TSP-1在PCOS患者血清中低表达,ANGPTL2在PCOS患者血清中高表达,三者与PCOS患者IR、性激素和卵巢间质血流密切相关。  相似文献   

17.
目的探讨正常SD雌性大鼠性成熟前不同日龄段的脏器与促黄体生成素(LH)、促卵泡素(FSH)、雌二醇(E2)等性激素的变化及其关系。方法从生产群中取出60窝密度状态一致的SD大鼠,在不同日龄随机选取雌性大鼠,检测15、25、32、40日龄时大鼠体重、主要脏器指数,子宫、卵巢组织变化和15、25、32、40、60日龄大鼠血清LH、FSH、E2水平。结果记录了SD雌性大鼠性成熟前各脏器指数和卵巢、子宫组织变化,结果显示大鼠卵巢、子宫的增长速度大于体重的增长,而其他脏器增速大都小于体重的增长。本研究还记录了血清LH、FSH、E2水平在不同日龄段的变化规律,表明血清LH、E2浓度在32日龄时出现较为明显升高。结论不同日龄大鼠脏器指数的动态变化提示大鼠性器官在性发育早期得到机体的优先发育。血清LH、E2水平在32日龄时有了明显升高,提示性腺轴功能已经激活。60日龄大鼠血清性激素水平的波动类似于动情周期的规律性变化,推测大鼠在60日龄前即已进入性成熟,这些结果将为大鼠性发育的相关研究提供重要的参考数据。  相似文献   

18.
In experimental dipsomania model (formation of physical dependence by method of intensive alcoholization) we have studied receptor binding of testosterone (T) and estradiol (E2) in the hypothalamus and pituitary body of mature male rats. Administration (at 10 and 16 h) of 25% ethanol-saline solution at a dose of 7.5 g/kg of body weight in the course of 5 days significantly decreased serum T level but did not change serum LH and FSH levels. Essential reduction of the nuclear androgen receptors in the preoptic-anterior hypothalamic area (POA), mediobasal hypothalamus (MBH) and adenohypophysis was noted in alcohol-treated rats. Unlike androgen receptors the number of the nuclear E2-binding sites in PaO was significantly increased in these males. Thus the results of the present paper demonstrate that multiple administration of ethanol stipulates deficit of serum T, androgen receptors in MBH and pituitary body that possibly results in separation of negative feedback mechanism between the gonads and pituitary body. Increase of specific binding of E2 to nuclear receptors in PoA might appear to explain feminization of alcohol-treated rats.  相似文献   

19.
The effects of chronic sub-lethal doses (7-14 mg kg-1 a day for 15 days) of quinalphos were evaluated in adult male rats for changes in testicular morphology, circulatory concentrations of hormones (LH, FSH, prolactin and testosterone), activities of acetylcholinesterase (AChE) and angiotensin converting enzyme (ACE) as well as metabolism of biogenic amines (dopamine, noradrenaline and 5-hydroxytryptamine (5-HT)) in the hypothalamus and pituitary. Hormones were assayed by radioimmunoassay or chemiluminescent immunoassay (testosterone). The enzymes were estimated after spectrophotometry and the biogenic amines by HPLC-electrochemistry. Sub-lethal chronic administration of quinalphos resulted in: decreased testicular mass and AChE activity in central as well as peripheral organs; increased serum LH, FSH, prolactin and testosterone concentrations; decreased pituitary or increased testicular ACE activity; severe disruption of spermatogenesis with increasing doses of pesticide; and no significant effects on dopamine, noradrenaline or 5-HT concentrations in the hypothalamus or pituitary. Administration of oestradiol (50 micrograms per rat a day) during pesticide treatment resulted in: a significant decrease in the mass of the testis and accessory sex organs; decreases in serum LH, FSH, testosterone concentrations; an increase in prolactin concentration; and a decrease in dopamine or an increase in noradrenaline and 5-HT in the hypothalamus or pituitary. Oestradiol had a marked effect: in pesticide-treated animals, the pesticide effects were significantly reversed. This indicates that in pesticide toxicity, the hypothalamo-pituitary-gonadal axis is operational. Since many of the observed pesticide effects could be inhibited by oestradiol, it is suggested that the pesticide acts directly on the gonadotrophins. In conclusion, quinalphos decreases fertility in adult male rats by affecting the pituitary gonadotrophins.  相似文献   

20.
To verify the role of dopaminergic mechanisms in the control of gonadotropin secretion in normal and hyperprolactinemic women, we examined the gonadotropin response to GnRH (100 micrograms i.v.) administration in both basal conditions and during low-dose dopamine (DA, 0.1 microgram/kg/min) infusion. Hyperprolactinemic women, either with microadenoma or without radiological signs of pituitary tumor, showed significantly enhanced LH and FSH responses to GnRH in comparison with normal cycling women. 0.1 microgram/kg/min DA infusion did not result in any appreciable suppression of serum gonadotropin levels but significantly reduced the LH and FSH responses to GnRH in both normal and amenorrheic hyperprolactinemic women. Although both LH and FSH levels remained higher in hyperprolactinemic patients than in normal women after GnRH, the gonadotroph's sensitivity to DA inhibition was normal in the hyperprolactinemic group, as both control subjects and patients with hyperprolactinemic showed similar per cent suppression of GnRH-stimulated gonadotropin release during DA. These data confirm that hypothalamic DA modulates the gonadotroph's responsiveness to GnRH. The increased LH and FSH responses to GnRH in hyperprolactinemic patients and their reduction during low-dose DA infusion seem to indicate that endogenous DA inhibition of pituitary gonadotropin release is reduced rather than enhanced in women with pathological hyperprolactinemia.  相似文献   

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