查询词典 seminiferous
- 与 seminiferous 相关的网络例句 [注:此内容来源于网络,仅供参考]
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It is a complex process involving cell division, differentiation and interaction between cells in the microenvironment of the seminiferous tubule.
睾丸生精小管中的生精细胞先后经过三个阶段的变化:精原细胞的增殖,精母细胞的减数分裂和精子细胞的变态过程,最终产生成熟的精子。
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Results: The incidence of cryptorchidism of male offsprings in group C and D was 10.8% and 63.5% respectively. The organ/weight of cryptorchid testis and epididymis significantly decreased compared with the control. Abnormal pathological and micro-structural alternations of seminiferous epithelium and sertoli cells were also observed.
结果:C、D组雄仔鼠隐睾发生率为10.8%和63.5%;隐睾睾丸、附睾的脏器系数显著减轻;睾丸生精上皮萎缩,生精细胞层减少甚至消失,曲精小管体积减小;同时附睾管腔中精子缺如。
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Results:compared with the torsion/orchiectomy group,the biochemical parameters and histological grades in the torsion/detorsion group increased in different degrees, and the prognosis status demonstrated by the number of spermatogenic cell associated with the decreased mean diameter of the seminiferous tubule, there are a worse prognoses in the torsion/detorsion group.
与扭转切除组比较,扭转复位组对侧睾丸的mda、il-6值、病理评分等均有不同程度升高,且1周时生精细胞层数结合精细小管直径所示的预后情况亦较差;而各指标在扭转切除组与假手术组的相比中未示明显差异。
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This center passes classics rectum seminiferous duct crock abdomen, spermatic gland, prostate massages art extraction essence of life to be able to avoid this kind of injury and anguish very well, and obtain enough spermatozoon to be used at ICSI and IVF-ET, report as follows now.
梗概: 隨着现代辅助生殖技术的发展,体外受精-胚胎移植及其相关技术成为治疗不孕不育症主要方法之一,对于精液中有精子者一般通过患者手淫取精用于体外受精。
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Results In the medium and high dose F0 groups, it was observed that the atrophy and incrassation of seminiferous tubule, decrease of spermatogenesis, hyperplasia of interstitial tissue, especially in high dose groups spermatozoon abnormality and nucleolus concentration in the rats testis after DU ingestion for 14 months. The changes became more severe with the prolongation of DU ingestion. Such changes occurred in filial rats (F1) after DC ingestion for 5 months. In the medium and high dose F0 groups, it was observed that a little atrophy of kidney glomerulus, hyperplasia of interstitial tissue after DC ingestion for 14 months, and kidney glomerulus fibrosis happened after DC ingestion for 20 months, such changes occurred in filial rats (F1) after DC ingestion for 5 months In the medium and high dose F0 groups, splenic germinal center and periarterial lymphatic sheaths were hyperplasia , companies with lymphopoiesis after DC ingestion for 7 months, splenic white pulp became more small and sparse after DC ingestion for 20 months.
结果 F0代的中、高剂量组大鼠摄入贫铀14个月后可见雄性的精曲小管萎缩,管壁增厚呈空虚网状,生精细胞层次减少,间质细胞增生,但仍见有精子生成;高剂量组可见到精子呈异型性改变,细胞核浓缩深染,且随着摄入时间延长改变愈趋明显;F1代大鼠摄入贫铀5个月后就有上述改变且更为严重。F0代中、高剂量组大鼠摄入贫铀14个月后肾小球轻度萎缩,间质增生明显,20个月时肾小球萎缩纤维化;F1代大鼠摄入贫铀5个月后就有上述改变。F0代中、高剂量组摄入贫铀7个月时脾脏生发中心和淋巴鞘增生,淋巴母细胞增生活跃,20个月时脾小体减少,生发中心稀疏;F1代大鼠摄入贫铀早期和晚期有类似改变。F0和F1代高剂量组摄入贫铀早期肝脏有炎症细胞浸润,晚期骨髓有核细胞减少,脂肪细胞增加。
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Conclu sion:(1)Surface densities of PCNApositive cells reached their peaks on 14th day after birth,but the number of apoptotic cells reached its peaks on 21st day p ostnatal,so the apoptotic peak was late the proliferating peak for a week,and related to the particular period in cycle of seminiferous epithelium;(2)The spe rmatogium were found move from center to the periphery of the seminiferous tubule and arrange disorder to order;(3)The spermatogonium remained replicating activ ity of DNA during the developing stage.
生精细胞凋亡的高峰要滞后其增殖峰1周左右,而且与其所处生精周期的特定阶段有关;(2)精原细胞在胚胎发育过程中向曲细精管周边迁移,其排列由无序到有序;(3)在生后各发育阶段中,精原细胞始终保持DNA复制的能力。
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Results: The results showed that:(1) The three types of NOS immunoreactivity were not found in rat testis until 30 days after birth;(2) NOS1 immunoreactivity was found in a few spermatocytes in rat testes on postnatal 30 days, and in spermatozoa present at the lumen surface of seminiferous tubules and some Leydig cells on postnatal 60 days;(3) NOS2 immunoreactivity appeared in a few spermatocytes, Sertoli cells and peritubular myoid cells on postnatal 30 days. On postnatal 60 days, NOS2 immunoreactivity appeared in some Leydig cells, peritubular myoid cells, Sertoli cells, very few spermatocytes and the head of immature spermatozoa in some seminiferous tubules;(4) NOS3 immunoreactivity was detected in a few spermatocytes on postnatal 30 days, as well as in the smooth muscle cells of blood vessels on postnatal 30 days and 60 days.
结果:(1)生后4、7、14 d大鼠睾丸未见3种NOS免疫阳性反应;(2)生后30 d少数精母细胞及生后60 d生精小管腔面精子和间质细胞呈NOS1阳性;(3)生后30 d少数精母细胞、支持细胞和管周类肌细胞呈NOS2阳性,而生后60 d NOS2阳性反应见于睾丸间质细胞、管周类肌细胞、支持细胞、极少数精母细胞和不成熟精子头部;(4)生后30 d睾丸内少数精母细胞和血管壁呈NOS3阳性,生后60 d NOS3阳性反应仅见于血管壁。
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The testis index, testis volumes were same as the annual changes of testis mass. The curves of annual variation were all unimodality.2 The spermatogenetic cycle of Myospalax cansus comprises seven stages with significant features: Stage I , from February to April, the testis were at the stage of spermatogonia proliferation. In this period, testis index and the number of spermatogonia began to rise. Other spermatogenic cells had not yet formed; Stage II to III, from March to April, primary spermatocyte meiosis period. The testis index was highest in this stage, and spermatogenic cells were in spermatocyte stage, the primary spermatocyte meiosis generated to secondary spermatocyte; Stage IV, from April to May, spermatocytes continued to split, germ cells appeared in seminiferous tubules; Stage V, in May, sperm formation, spermatids of seminiferous tubules were transformed to spermatozoa, a large number of sperms existed in the lumen; Stage VI, spermatozoa emission period, from May to June, testis index were a significant drop and mature spermatozoa excluded gradually; VII, the testicular activity ceased basically from July to September, November to January of the following year, the spermatogenic activity ceased completely. Therefore, Myospalax cansus are animals of seasonal reproduction, spermatogenesis cycle is discontinuous type.
睾丸系数、体积和重量的年周期变化规律一致,变化曲线呈现单峰型。2甘肃鼢鼠雄性生殖腺的年周期活动由7个特征明显的时期构成:Ⅰ期,2~3月份,精原细胞增殖期,睾丸系数开始上升,精原细胞进行有丝分裂,其他生精细胞尚未形成;3~4月份为Ⅱ~Ⅲ期,初级精母细胞成熟分裂期,睾丸系数达到最大,生精细胞大多处于精母细胞阶段,初级精母细胞减数分裂生成次级精母细胞;Ⅳ期,4~5月份精母细胞继续进行分裂,精细胞在生精小管内出现;Ⅴ期,5月份,精子形成期,曲细精管中精细胞变态成精子,在管腔中存在大量的精子;Ⅵ期,精子排放期,5~6月份,睾丸系数显著下降,成熟精子从生精小管上脱离,逐渐排除;Ⅶ期,精原细胞停滞期,7~9月份睾丸生精活动基本停滞,11~翌年1月,生精活动完全停止。
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Animals, as material, were used to study the toxicity of outer substance and made sure the estrogen effect of BBP by whole animal experiment, and the chronic toxicity of BBP was studied, designed and valued through several dosages and different exposed time. The result showed that BBP could make testis, epididymis and prostate withdrawl. Tectology changes were observed in testis, epididymis and liver. Especially the atrophy and degeneration of seminiferous tubules, decrease of spermatogenic cell and the turbulence of Sertoli cell and spermatogenic cell of seminiferous epithelium were also observed. The linkage between cells vanished.
明确了BBP的雌激素效应,并分别用多剂量和不同染毒时间来研究、设计、评价BBP在体内的慢性毒性,结果表明:BBP能引起雄鼠睾丸、前列腺、附睾性腺的萎缩和肝脏肿大,改变睾丸、前列腺、肝脏的组织形态学,尤其引起睾丸曲细精管萎缩、变性,各级生精细胞减少,生精上皮内生精细胞和Sertoli细胞结构明显紊乱,细胞间连接结构消失等。
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Histologically, the seminiferous tubules contained numerous Sertoli cells and more Sertoli-spermatozoa complexes, accompanied by the depletion of Leydig cells with deeply stained nuclei. Mature spermatozoa were stored up in the epididymis, but only a few in the efferent ducts. In the second place was testicular atrophy(32/120; 26.7%). The seminiferous tubules showed moderate to severe inactivity of spermiogenesis with evidence of only spermatogonia, spermatocytes and Sertoli cells. The Leydig cells were obviously decreased in numbers associated with decrease of lipid droplets in their cytoplasms. Testicular hypoplasia was the third disorders(22/120; 18.3%). Only a few spermatogonia and Sertoli cells appeared without any spermiogenesis. The associated changes was decreased in Leydig cells and fibrous hyperplasia in the interstitium.Epididymal stones were sometimes found(12/120; 10%). Grossly, yellowish-white nodules with various sizes and firm in consistency were observed in the epididymis and the front efferent ducts. Microscopically, the epididymal ducts were dilated with voluminous spermatozoa storage, even showed calcification in severe cases. The deposited calcium salts were stained positively by Von Kossa and Alizarin red methods.Amyloidosis was also detected in 10 roosters(8.3%). Eosinophilic, homogeneous, amyloid-like substances were deposited mainly in the testicular interstitium and the periphery of blood vessels. These substances showed positive reaction by Congo red staining. Five roosters(4.2%)had Marek's lesions in the testis, epididymis and peripheral nerves with infiltration of pleomorphic lymphocytes. Only one case showed epithelial necrosis of seminiferous tubules accompanied by fibrous proliferation in the interstitium.
结果发现,在总共搜集的120个病例中,其中因年老所导致的产精力不佳为最多,占38例(31.7%),於镜下可见大量精虫黏附於Sertoli cell的表面,并可见Sertoli cell数量明显增多而Leydig cell明显减少,且其细胞核呈现浓染的现象,而在其副睪中仍可见到成熟精虫蓄留於管腔中,但在其输精管内却只有少量精虫存在;其次为睪丸萎缩,占32例(26.7%),镜下可见中度至重度无造精作用,其生精小管中只见到精母细胞、精原细胞及Sertoli cell存在,但Leydig cell数量明显减少且其细胞质内的脂质也明显减少;睪丸发育不全,占22例(18.3%),於生精小管内只见到精母细胞及少量Sertoli cell存在,不见造精细胞分化,於生精小管间质可见Leydig cell减少并伴随结缔组织增生;副睪结石,占12例(10%),肉眼下可在副睪及输精管前段见到黄白色大小不一的结节,触感坚硬,於镜下可见副睪管扩张并有大量成熟精虫蓄积,严重时可见钙化现象,以Von Kossa及茜素红染色均呈阳性反应;类淀粉沉著症,占10例(8.3%),镜下在睪丸间质及血管周围可见粉红均质样的物质沉积,以刚果红染色成阳性反应;马立克病,占5例(4.2%),镜下可在睪丸、副睪实质及周边神经内均可见到嗜碱性大小不一的淋巴样细胞浸润;睪丸坏死,占1例(0.8%),镜下可见生精小管上皮细胞坏死脱落及间质结缔组织增生。
- 推荐网络例句
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Neither the killing of Mr Zarqawi nor any breakthrough on the political front will stop the insurgency and the fratricidal murders in their tracks.
在对危险的南部地区访问时,他斥责什叶派民兵领导人对中央集权的挑衅行为。
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In fact,I've got him on the satellite mobile right now.
实际上 我们已接通卫星可视电话了
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The enrich the peopling of Deng Xiaoping of century great person thought, it is the main component in system of theory of Deng Xiaoping economy, it is a when our country economy builds basic task important facet.
世纪伟人邓小平的富民思想,是邓小平经济理论体系中的重要组成部分,是我国经济建设根本任务的一个重要方面。