首页 | 本学科首页   官方微博 | 高级检索  
相似文献
 共查询到20条相似文献,搜索用时 31 毫秒
1.
Aim: To evaluate the antifertility activity of various extracts of Crotalaria juncea seeds in male mice. Methods: Adult male mice were gavaged the petroleum ether, benzene and ethanol extracts of C. juncea seeds, 25 mg·(100g)-1·day-1 for 30 days. On day 31 the animals were sacrificed by cervical dislocation and the testes, epididymis, vas deferens, seminal vesicles, prostate gland, bulbourethral gland and levator ani were dissected out and weighed. The organs were processed for biochemical and histological examination. Results: In petroleum ether, benzene and ethanol extracts treated rats, there was a decrease in the weights of testis and accessory reproductive organs. The diameters of the testis and seminiferous tubules were decreased. Spermatogonia, spermatocytes and spermatids in the testis and the sperm count in cauda epididymis were also decreased. There was a significant reduction in the protein and glycogen contents and an increase in the cholesterol content in the testis, epididymis and vas def  相似文献   

2.
Aim: To evaluate the antifertility activity of the methanolic pod extract of Albizzia lebbeck (L.) Benth in male albino rats. Methods: The methanolic pod extract of Albizzia lebbeck was administrated orally for 60 days at 50, 100 and 200 mg·kg-1·day-1 to male albino rats. Sperm motility and density in cauda epididymides were assessed. Biochemical and histological analysis were performed in blood samples and reproductive organs. Results: A. lebbeck pod extract brought about a significant decrease in the weights of testis, seminal vesicles, epdidymis and ventral prostate. The sperm motility and density were significantly reduced. There was a marked reduction in the numbers of primary spermatocytes, secondary spermatocytes and spermatids. The Sertoli cell count as well as its cross sectional surface area were significantly decreased. The Leydig cell nuclear area and the number of mature Leydig celis were also significantly decreased. The protein, glycogen and cholesterol content of the testis, the fructos  相似文献   

3.
Formaldehyde is a common agent in our surrounding environment and can adversely affect the male reproductive system. In this study, the effectiveness of Matricaria chamomilla (MC) extract as an antioxidant was investigated in rats treated with formaldehyde. Thirty‐two male Wistar rats were randomly divided into six groups: F (10 mg/kg formaldehyde), M200 (200 mg/kg MC extract), M500 (500 mg/kg MC extract), FM200 (10 mg/kg formaldehyde and 200 mg/kg MC extract), FM500 (10 mg/kg formaldehyde and 500 mg/kg MC extract) and control group (0.9% normal saline). Formaldehyde and MC extract were administered daily for 30 consecutive days via intraperitoneal injection. Hormonal status, sperm parameters, testis tissue histology, germinal cells apoptosis and stereological analyses of testis tissue were investigated. Testosterone and LH levels were significantly increased in FM200, FM500, F200 and F500 groups compared to F group (p ≤ 0.05). Sperm count, motility and viability were significantly enhanced in FM200, FM500, F200 and F500 groups compared to F group (p ≤ 0.05). A decrease in the number of apoptotic germ cells in FM200, FM500, M200 and M500 groups (p ≤ 0.05) was evident. In particular, the MC extract in dose 500 mg/kg is seen to reduce the adverse effects of formaldehyde on the reproductive system of male rats.  相似文献   

4.
Nonylphenol (NP), an endocrine-disrupting chemical, interferes with reproductive function and induces oxidative stress in different organs, including the testis and prostate. Alpinia officinarum Hance (ALP), a plant species of the Zingiberaceae family, has proven antioxidant properties. This study aimed to evaluate the effect of the alcoholic extract of ALP treatment on NP-induced reproductive toxicity and oxidative stress in male rats using biochemical and histopathological biomarkers. Our experimental groups were defined as follows: oil treatment (control), NP 10 mg/kg, ALP 10 mg/kg (ALP HD), NP + ALP 5 mg/kg (NP + ALP LD) and NP + ALP 10 mg/kg (NP + ALP HD). NP administration caused significant cytotoxicity and a significant increase in oxidative stress prostate-specific antigen (PSA) levels accompanied by a significant reduction in testosterone levels. The relative weight of the testis of both NP + ALP LD and NP + ALP HD groups was significantly decreased compared to the control group. Histopathological evaluations revealed destructive effects in testis and prostate tissue samples. In conclusion, ALP administration improved cytotoxicity, oxidative stress, testosterone and PSA levels, and testis and prostate tissue destructive effects induced by the NP in male rats.  相似文献   

5.
Mature male albino Wistar rats (180-210 g) were given aqueous extract of dry seeds of Aframomum melegueta K. Schum (Zingiberaceae) by gastric intubation during periods of 8 and 55 days. This was performed in two doses: 115 and 230 mg kg(-1) during 8 days and 115 mg kg(-1) during 55 days. Control rats received distilled water during the same periods. The animals were sacrificed and their blood, as well as testis, epididymis, seminal vesicle and prostate were collected and analysed. Results showed a significant increase in testosterone in serum and testis, cholesterol in testis, α-glucosidase in epididymis and fructose in seminal vesicle after 8 days of treatment of A. melegueta-treated rats (115 and 230 mg kg(-1) ). Results also showed that levels of cholesterol in testis, α-glucosidase in epididymis and fructose in seminal vesicle increased by 93.34%, 83.44% and 62.78%, respectively, after 55 days of A. melegueta treatment. From these findings, it was concluded that the aqueous extract of A. melegueta increased the secretions of epididymis and seminal vesicle, which are accessory sex organs.  相似文献   

6.
The authors examined the effects of the immunosuppressive drug cyclosporine (CsA) on the male reproductive system in prepubertal rats. Twenty-one-day-old rats were subcutaneously injected with either cremaphorsaline vehicle or CsA (1 and 2 mg/kg/d). The animals were treated until they were 66 days old. Cyclosporine did not affect the weights of the body or testis but decreased the weights of all sex accessory organs. Quantitative analysis of the tubules in stage VII of spermatogenesis revealed a decline in the cell counts of pachytene spermatocytes and step VII spermatids. Testicular and epididymal sperm counts and motility were decreased by 50% and fertility by 60%. Cyclosporine lowered serum testosterone despite an elevation of LH, indicating that the drug directly inhibited testosterone synthesis. Serum creatinine levels were normal in the treated animals, precluding renal failure as the cause for this impairment. Intratesticular concentrations of pregnenolone and 17-hydroxy progesterone were significantly elevated, while those of progesterone, androstenedione, and testosterone were markedly reduced. Determination of steroidogenic enzyme activities indicated that the administration of CsA inhibited the activity of delta 5-3B-hydroxy steroid dehydrogenase-delta 5-4 isomerase (3 beta-HSD). These results clearly indicate that CsA in the doses used is harmful to the male reproductive function in prepubertal rats.  相似文献   

7.
醋酸铅对雄性小鼠生殖功能的毒性作用   总被引:6,自引:0,他引:6  
目的 探讨醋酸铅对雄性小鼠生殖功能的毒性作用。 方法 不同浓度醋酸铅 ( 1 .5、6及 2 4mg/kg)腹腔注射 4周龄雄性小鼠 ,共 1 0次。 50d后与正常雌鼠合笼交配 ( 1∶2 ) ,观察雌鼠受孕率、胚胎总数、异常胚胎数 (率 )、胎鼠重量 ;测定睾丸指数、附睾精子数量、精子活动率和精子畸形率。 结果 对照组、醋酸铅各组合笼 2 1d,雌鼠受孕率和胚胎总数无显著差异 (P >0 .0 5)。醋酸铅 2 4mg/kg组异常胚胎数 (率 )显著高于对照组和 1 .5mg/kg组 (P <0 .0 5) ,胎鼠重量和雄鼠睾丸指数显著低于对照组 (P <0 .0 5)。其他实验组异常胚胎率、胎鼠重量和雄鼠睾丸指数与对照组比较无显著性差异。各实验组附睾精子数显著低于对照组 (P <0 .0 5,P <0 .0 0 5) ,附睾精子畸形率显著高于对照组 (P<0 .0 5,P <0 .0 0 5) ,中、高浓度醋酸铅组附睾精子活动率显著低于对照组 (P <0 .0 5)。 结论 醋酸铅 2 4mg/kg处理雄鼠对睾丸、精子数量和质量、合笼雌鼠胚胎产生影响。 1 .5及 6mg/kg只影响精子数量和质量而不影响生殖功能和子代。合笼雌鼠异常胚胎率增高和胎鼠重量下降可能与醋酸铅引起精子质量下降有关  相似文献   

8.
氯化镉对雄性小鼠的生殖毒性作用   总被引:2,自引:0,他引:2  
目的研究氯化镉对雄性小鼠生殖器官和生殖细胞的毒性作用以及对雄性小鼠生殖功能的影响。方法分别以每公斤体重0..5mg/kg、2mg/kg、8mg/kg体重腹腔染毒4周龄雄性小鼠,共10次。第50天以雌雄2:1同笼交配,观察雌鼠受孕率、生育子胎数、胎鼠重量。同时观察染毒雄鼠第50天时睾丸发育和睾丸指数、附睾精子数量、精子活动率和精子畸形率以及生殖细胞减数分裂。结果2mg/kg和8mg/kg组染毒小鼠睾丸发育受到影响,睾丸指数显著低于对照组和0.5mg/kg组(p<0.05,p<0.001)。2mg/kg组中部分小鼠(6/11)和8mg/kg组存活小鼠睾丸发育不良,无精子,不育。2mg/kg组小鼠1周受孕率和3周受孕率显著低于对照组和0.5mg/kg组(p<0.05),但染毒组异常妊娠率与对照组比差异无显著性。0.5mg/kg组雄鼠生育力、附睾精子数量、精子活动率和精子畸形率与对照组比较差异无显著性。结论2mg/kg浓度和更高浓度氯化镉致4周龄雄鼠睾丸发育不良,导致无精子症和不育,是造成生殖力降低的主要原因。  相似文献   

9.
氰戊菊酯对雄性大鼠生殖内分泌系统的影响   总被引:12,自引:5,他引:12  
目的 :研究氰戊菊酯 (Fen)对雄性生殖内分泌系统的损害作用及其机制。 方法 :将不同剂量的Fen(0、2 .4、12、6 0mg/kg) ,每日分别对雄性成年SD大鼠连续灌胃 ,染毒 15、30d ,应用RIA法测定大鼠血清中FSH、LH、T和睾丸匀浆中T的水平 ,同步测定睾丸标志酶ACP、γ GT的活性 ,并采用精子头计数法观测每日精子生成量 (Spr)的变化。 结果 :与对照组相比 ,染毒 15d时 ,血清中FSH水平在≤ 12mg/kg剂量组均明显升高 (P <0 .0 1) ,血清中LH含量在 12mg/kg剂量组显著增加 (P <0 .0 1) ,而睾丸匀浆中T在≥ 12mg/kg剂量组中表现为显著下降 (P<0 .0 1) ;染毒至 30d时 ,血清中FSH水平在≥ 12mg/kg剂量范围继续呈现显著增加 (P <0 .0 1) ,睾丸匀浆中T在2 .4mg/kg剂量组则降低 (P <0 .0 5 )。ACP活性在染毒 15d时 2 .4mg/kg剂量组表现为升高 (P <0 .0 5 ) ,继续染毒至 30d时 6 0mg/kg剂量组则显著减低 (P <0 .0 5 ) ;γ GT活性则始终随染毒剂量的增加而降低 (P <0 .0 5 )。Spr与染毒剂量有明显的剂量依赖关系 ,在≥ 12mg/kg剂量范围显著减少 (P <0 .0 1)。  结论 :Fen对雄性大鼠有明显的生殖毒性 ,可影响其血清及睾丸性激素水平和酶活性 ,这可能与Fen对支持细胞和生精上皮的损害有关  相似文献   

10.
Aim: To investigate the effect of Morinda lucida Benth (Rubiaceae) on the reproductive activity of male albino rats. Methods: Two groups of rats were treated with 400 mg/(kg.d) of Morinda lucida leaf extract for 4 and 13 weeks, respectively. The control rats received the vehicle. All the treated rats had corresponding recovery groups. At the end of each experimental period, animals were killed and organ weights, sperm characteristics, serum testosterone levels, histology of the testes and fertility were assessed. Results: Morinda lucida leaf extract did not cause any changes in body and somatic organ weights, but significantly increased the testis weight (P 〈 0.05). The sperm motility and viability, and the epididymal sperm counts of rats treated for 13 weeks were significantly reduced (P 〈 0.05). Sperm morphological abnormalities and serum testosterone levels were significantly increased (P 〈 0.05). There were various degrees of damage to the seminiferous tubules. The extract reduced the fertility of the treated rats by reducing the litter size. Reversal of these changes, however, occurred after a period of time. Conclusion: The extract of Morinda lucida has reversible antispermatogenic properties.  相似文献   

11.
Aim: To investigate effects of quercetin on weight and histology of testis and accessory sex organs and on sperm quality in adult male rats. Methods: Male Sprague-Dawley rats were injected s.c. with quercetin at the dose of 0, 30, 90, or 270 mg/kg body weight/day (hereafter abbreviated Q0, Q30, Q90 and Q270, respectively), and each dose was administered for treatment durations of 3, 7 and 14 days. Results: From our study, it was found that the effects of quercetin on reproductive organs and sperm quality depended on the dose and duration of treatment. After Q270 treatment for 14 days, the weights of testes, epididymis and vas deferens were significantly increased, whereas the weights of seminal vesicle and prostate gland were significantly decreased, compared with those of Q0. The histological alteration of those organs was observed after Q270 treatment for 7 days as well as 14 days. The sperm motility, viability and concentration were significantly increased after Q90 and Q270 injections after both of 7 and 14 days. Changes in sperm quality were earlier and greater than those in sex organ histology and weight, respectively. Conclusion: Overall results indicate that quercetin might indirectly affect sperm quality through the stimulation of the sex organs, both at the cellular and organ levels, depending on the dose and the duration of treatment. Therefore, the use of quercetin as an alternative drug for treatment of male infertility should be considered. (Asian J Androl 2008 Mar. 10: 249-258)  相似文献   

12.
Caesalpinia ferrea Mart (Leguminosae) is a medicinal plant used to treat diabetes, among other therapeutic properties, but which is also reported to have hepatotoxic effects. Although it contains substances such as flavonoids and coumarin, which are known to have antifertility activity, no studies have apparently been conducted to evaluate the potential adverse side effects of this plant on the function of the reproductive system after a chronic treatment. Therefore, this investigation was carried out to evaluate the effect and safety of the long-term exposure to C. ferrea on male Wistar rats' vital organs, reproductive system and sperm production. Adult and immature male rats were treated with an aqueous extract of C. ferrea at a dose level of 300 mg/kg of body weight, administered during one or two spermatogenic cycles of this species. The reproductive and vital organs were analyzed, and sperm was collected from the epididymal secretion of the right epididymis cauda. The long-term administration of C. ferrea did not significantly alter the body, vital and reproductive organs weights. Gamete production was not affected either. The chronic assessment of C. ferrea suggests that this plant does not affect the normal functioning of the Wistar rat reproductive system.  相似文献   

13.
Silver nanoparticles (SNPs) can pass from the cell membrane and testicular blood barrier due to their small size, and by increasing oxidative stress they cause disorder in the male reproductive system. Kombucha is a traditional fermented drink with detoxification and potent antioxidant properties. We aimed to examine the protective effect of Kombucha against the damages due to SNPs on the testis tissue. In this experimental study, NMRI mice were randomly separated into four groups (n = 6), namely control (distilled water), SNPs (500 mg/kg), Kombucha extract (9 ml/kg) and SNPs + Kombucha, and were treated with gavage for 35 days. A significant decrease in testosterone level and total antioxidant capacity, and a significant increase in malondialdehyde concentration was observed in the SNPs group in comparison with the control group. Histological studies on the testis of mice treated with SNPs showed vacuolation, decrease in generational epithelium thickness, seminiferous tubules diameter, testis volume and the number of spermatozoa in lumen of the seminiferous tubule and increase in the volume of interstitial space while the mentioned parameters were improved in the SNPs + Kombucha group compared to the SNPs group. Kombucha reduces the adverse effects of SNPs on testis tissue and improves the function of the male reproductive system.  相似文献   

14.
R. K. Mishra  S. K. Singh 《Andrologia》2016,48(9):1011-1020
The flower buds of Syzygium aromaticum (clove) have been used for the treatment of male sexual disorders in indigenous medicines of Indian subcontinent. Therefore to evaluate the efficacy of Syzygium aromaticum on the male reproductive health, chronic oral exposure of aqueous extract of flower buds of Syzygium in three doses (15 mg, 30 mg and 60 mg kg?1 BW) were studied for a single spermatogenic cycle (35 days) in Parkes (P) strain mice. Lower dose (15 mg) of Syzygium aromaticum flower buds increased serum testosterone level and testicular hydroxysteroid dehydrogenase (HSD) activities and improved sperm motility, sperm morphology, secretory activity of epididymis and seminal vesicle, and number of litters per female. On the other hand, higher doses (30 and 60 mg) of the treatment adversely affected above parameters. Further, higher doses of the extract also had adverse effects on daily sperm production, 1C cell population and on histology of testis. In conclusion, Syzygium aromaticum flower buds extract exhibits biphasic effect on reproductive physiology of male mice. Lower dose of Syzygium aromaticum flower bud extract is androgenic in nature and may have a viable future as an indigenous sexual rejuvenator, while higher doses adversely affected functional physiology of reproductive organs.  相似文献   

15.
Summary The effects of administration of a luteinizing hormone-releasing horomone (LHRH) analogue (ICI-118,630) on plasma concentrations of hormones and weights of reproductive organs were studied in male mice. A single injection of the analogue (54 g/kg body weight) caused a transient elevation of the concentration of LH in the plasma, up to 7 times the level in control mice. Daily administration of the analogue for a period of 3 weeks caused a small but significant decrease of the weight of the ventral prostate. The weight of the seminal vesicles in mice treated with the analogue, however, did not differ from that in control animals. The concentration of testosterone and LH in the plasma of these mice was not significantly different from those in control mice. It is demonstrated that the LHRH-analogue has no castration-like effect on the accessory sex organs of the male mouse, which is therefore not a suitable model in the study of these compounds.  相似文献   

16.
目的:研究叶下珠(PU)提取物对盐酸氮芥(HN2)损伤睾丸组织N-钙粘蛋白表达的保护作用。方法:以5mg/kg高剂量HN2腹腔注射雄性KM小鼠制备生殖毒性模型,48只KM小鼠随机分为正常对照组、高剂量HN2组(5mg/kg)、高剂量HN2+低剂量PU(125mg/kg)干预组、高剂量HN2+中剂量PU(250mg/kg)干预组、高剂量HN2+高剂量PU(500mg/kg)干预组、高剂量PU组(500mg/kg)6组,每组8只。分别应用免疫组化染色、RT-PCR、Western印迹检测各组小鼠睾丸组织N-钙粘蛋白分布、mRNA及蛋白质表达水平变化。结果:N-钙粘蛋白主要分布在生精小管基底部Sertoli细胞及Leydig细胞、管周细胞胞膜及胞质;HN2处理后,N-钙粘蛋白仅在生精小管基底部及管周细胞有少许表达;不同剂量PU干预高剂量HN2处理后,睾丸内N-钙粘蛋白mRNA和蛋白质表达随PU干预剂量增加而明显上调(P<0.01);高剂量PU干预HN2组及高剂量PU组,N-钙粘蛋白分布表达与正常睾丸组织无明显差异(P>0.05)。结论:PU能有效干预HN2对睾丸组织N-钙粘蛋白表达的损伤。  相似文献   

17.
Bajaj VK  Gupta RS 《Andrologia》2012,44(Z1):530-537
To control growing world population, there is a need for male contraceptive methods that are comparable to female contraceptives, but due to lack of knowledge or investigation, no sufficient safe and effective contraceptives were developed till now. In the present investigation, the effect of 100% methanol extract of Opuntia dillenii phylloclade on reproduction in male rats was studied. A first group (I) received vehicle alone to serve as control. The second group (II) was further divided into treated and recovery groups, and the plant extract at 50 mg kg body weight(-1) was administered orally for 30 days. Biochemical, haematological and histopathological analyses were carried out to reveal the effects on reproductive organs in the male rats. The weights of reproductive organs were recorded. It was found that the number of fertile males, number of inseminated females, number of litters delivered and testosterone levels were reduced significantly. Epididymal sperm count and motility were also significantly decreased. Biochemical parameters support the antifertility activity of O. dillenii i.e. decreases in protein, glycogen content and elevation in cholesterol level. Testes and sperm morphology were altered significantly. Haematological parameters have not shown any significant changes. It is concluded that 100% methanol extract of O. dillenii possesses antifertility effects on male reproduction without change in general physiology.  相似文献   

18.
目的:研究大豆异黄酮孕期和出生后暴露对子代雄性大鼠生殖系统发育相关指标以及ER-β受体表达的影响。方法:SD大鼠随机分为对照组(玉米油)、大豆异黄酮50、200、400 mg/kg体重和已烯雌酚(DES)0.1 mg/kg体重组,母鼠从妊娠0 d开始灌胃各组药品,子鼠21 d断奶后开始灌胃直至处死。子代雄性大鼠每组随机取6只分别在49 d、90 d处死,观察生殖系统发育相关指标并检测睾丸组织ER-β受体表达情况。结果:①对于不同年龄段子代雄鼠,大豆异黄酮各剂量组以及DES组每日平均摄食量均无显著性差异,但49~90日龄子鼠大豆异黄酮200 mg/kg体重、400 mg/kg体重组以及0.1 mg/kg体重DES组的食物利用率显著下降。②大豆异黄酮剂量为50 mg/kg体重以上时,不同年龄段的子鼠体重均显著下降(P<0.05)且90日龄子代雄鼠体重变化大于49日龄子代雄鼠。③随着大豆异黄酮剂量的增加,睾丸重量、睾丸精子头计数和每日精子生成量呈显著下降趋势且90日龄子鼠以上指标的变化比49日龄子代雄鼠变化更加明显。④随着大豆异黄酮剂量的增加,不同年龄段子代雄鼠各剂量组ER-β受体表达与对照组比较均呈上升趋势且90日龄子代雄鼠上升趋势大于49日龄子代雄鼠。结论:大豆异黄酮孕期和出生后暴露可干扰子鼠雄性生殖系统的发育,ER-β受体表达变化可能是其机制之一。  相似文献   

19.
H K Mangat 《Andrologia》1979,11(6):449-452
The effect of 10 days i.m. treatment of testosterone propionate (TP) on plasma testosterone and accessory reproductive organs were studied in adult (6 to 6 1/2 kg) male rhesus monkeys, housed under natural light conditions using six different dose levels. The study was scheduled in the month of September and October. To maintain the weight of accessory reproductive organs and testosterone levels in castrates, different dose levels of exogenous testosterone propionate were required: 3.2 mg/d for seminal vesicles, 4.8 mg/d for ventral prostate and 3.2 mg/d for plasma testosterone titer. The levels of so-called "physiological" doses of exogenous testosterone varied for various target organs under consideration. TP at a dose of 0.4 mg/d had a depressing effect on plasma testosterone in intact monkeys. For higher doses, plasma testosterone increased roughly similarly in both intact and castrated monkeys. It suggests that with otherwise "physiological" doses of testosterone propionate, there is an almost complete blockage of endogenous testosterone secretion.  相似文献   

20.
This study aimed to compare acacetin adverse effect besides a cisplatin low dose on male reproductive and urinary systems on mice. In this study, 36 male Balb/c mice were received Dimethyl sulfoxide, cisplatin (1 mg/kg) or acacetin (10, 25, 50 mg/kg) for 3 days, while the sixth group, treated with acacetin (50 mg/kg) for 10 days. All treatments were done consequence daily and intraperitoneally. Histological and biochemical factors to male reproductive and urinary systems were assayed. Only in cisplatin exposed group, significant differences were seen with the others. So that, some reproductive criteria were significantly decreased; serum levels of follicle-stimulating hormone, luteinizing hormone, testosterone, sperm parameters, the diameters of seminiferous tubules, Johnsen's score and from the urinary system; renal corpuscles' space, Mg2+ concentration (p < .01). Moreover, significant increases were seen in serum levels of tumour necrosis factor-alpha, Blood urea nitrogen, creatinine, testis myeloperoxidase activity and tumour necrosis factor-alpha expression, kidney histological damage and renal corpuscle diameter (p < .01). Cisplatin exposure disrupts histological and functional characteristics of either male reproductive or urinary systems, suggesting by inflammation-promoting. Acacetin does not induce any harmful impact on these two systems and could be considered as a safe flavonoid by high dose and prolonged usage.  相似文献   

设为首页 | 免责声明 | 关于勤云 | 加入收藏

Copyright©北京勤云科技发展有限公司  京ICP备09084417号