精子细胞

哺乳动物精子细胞及精母细胞授精能力研究进展

Research Progress in the Capacity of Fertilization of Mammal Spermatid and Spermatocyte

免疫组织化学显示膜联蛋白A1主要分布于精原细胞核、精子细胞顶体帽及精子胞质残余体内。

Annexin A1 mainly distributed in nuclei of spermatogonia , acrosomal cap of spermatid and residual body of sperm .

对斑马鱼的肝胰脏、肾脏、鱼鳍、精子细胞也可引起DNA的损伤，表现出遗传毒性。

NB also induced DNA damage on the liver and pancreas , kidney , fin , sperm cells of Zebrafish , showed genetic toxicity .

虽然这些X连锁的，特异表达于精子细胞的基因在雄性减数分裂后期被沉默了，但他们参与了减数分裂早期的过程。

Although these X-linked , germ cell-specific genes undergo inactivation during later stages of male meiosis , they play a role in the early stages .

加拿大研究人员已经在小鼠实验中证实吸烟能导致精子细胞的DNA序列改变，而且这些变化有可能被下一代遗传。

Canadian researchers have demonstrated in mice that smoking can cause changes in the DNA sequence of sperm cells , alterations that could potentially be inherited by offspring .

关键之处可能在于支持细胞（Sertolicell，又译塞托利细胞），这种细胞在睾丸内精子细胞发育成精子的10周过程中为它们提供支持。

The key may be Sertoli cells , which support the testes ' germ cells during their 10-week development into becoming sperm .

方法使用显微操作法捕获精子细胞，全基因组扩增（多重置换扩增）精子细胞DNA。

Methods Sperm cells were captured by micromanipulation method , DNA template was prepared from these sperm cells , and then amplified by multiple displacement amplification ( MDA ) .

放射生物学研究表明，该技术可用于检测精子细胞、肿瘤细胞和淋巴细胞等哺乳动物细胞受照后的DNA损伤。

Studies on radiation biology has indicated that we can detect the DNA injury by SCGE in mammal cells such as sperm cell , tumor cell and lymphocyte after radiation .

本文应用该模型预测了ICR小鼠精子细胞和人角膜基质细胞在冷冻过程中的体积变化。

It is used to predict the volumetric change of ICR mouse spermatozoa and human corneal keratocytes .

电镜下观察到精原细胞、精母细胞、精子细胞及Sertoli细胞凋亡的早期形态学改变及细胞器的改变。

The early apoptotic cells and organelles configuration were observed in spermatogoniums , spermatocytes , spermatoblasts and Sertoli cells .

生毛体与嗜锇颗粒是银杏（Ginkgobiloba）精子细胞中最具有标志性的结构。

Both blepharoplast and osmiophilic globule were characteristic structures to the spermatid of Ginkgo biloba . The osmiophilic bodies were first observed in type ⅱ alveolar cells .

抗c-kit抗体免疫化学染色显示：粗线期初级精母细胞、精原细胞反应呈阳性，Sertoli细胞、圆形精子细胞、精子反应呈阴性。

In immunocytochemistry staining , PPS and spermatogonia displayed positive staining , while Sertoli cell , round spermatid and sperm displayed negative staining .

结果：在对照组中，α-catenin主要表达于精子细胞顶体、管周肌样细胞和Leydig细胞胞质。

Results : In the control ,α - catenin was expressed in the acrosome of spermatids and the cytoplasm of Leydig cells and peritubular myoid cells .

结果：在正常健康人睾丸组织中，AR在精原细胞、精母细胞、圆形精子细胞、支持细胞、间质细胞和肌样细胞的胞核均有表达，但各类细胞表达AR的强度有差异。

Results : AR was expressed in the nuclei of the spermatogonia , spermatocytes and round spermatids of the normal testicular biopsy , but the intensity of the AR expression showed difference in each type of cells .

当精子细胞（第14、15期）的核进一步浓集时，PTA阳性的染色质由核的头端向尾端方向逐渐消失。

The positive chromatin in the nuclei of spermatids ( steps 14 , 15 ) was disappeared progressively , in the direction from cranial to caudal along with the further condensation of nuclei .

结果：在配置Hoffman镜头的倒置显微镜下人睾丸圆形细胞主要可分为4群：支持细胞（Sertoli）细胞，粗线期初级精母细胞，精原细胞，圆形精子细胞。

Results : Sertoli cell , primary pachytene spermatocyte ( PPS ), spermatogonia , round spermatid were the main four round cell groups that can be classified under Hoffman optics .

单个圆形精子细胞培养，可见到圆形精子细胞长出鞭毛转化为长形精子细胞，48h的转化率为3.54%。

During single round spermatid culture , transformation of the round spermatid to elongating spermatid with newly formed flagellum was observed , and the transformation ratio within 48 hours of microdrop culture was ( 3.54 ) % .

在精子细胞中，CB以平行或是垂直的方式沿核膜快速的移动，而且有实验证明CB移动过程中从核中收集基因产物，参与核质间RNA的运输。

In spermatids , CBs move quickly around the nuclear envelope in a parallel or vertical manner . There are several experiments show that CBs collect gene products when they move , and participate in the transportation of RNA between nuclear and cytoplasm .

上述结果表明：SC在Sertoli内始终与长形精子细胞头部的发育和变形相伴随，提示它可能与精子细胞的变态有关。

These results indicated that during rat spermatogenesis , the SC was always in company with the spermatid development and spermiogenesis , so it reminded that the distribution changes of SC may be concerned with the event of spermatid metamorphosis .

结果DES处理组的成年仓鼠睾丸生精细胞发育异常，bcl2和p53表达量均比对照组有显著增加，并以精母细胞和圆形精子细胞较为明显。

Results DES induced adult hamster testes abnormal spermatogenesis . As compared to the control group animals , in DES-treated group animals the expression of both bcl-2 and p53 significantly increased in spermatogenic cells , especially in spermatocytes and round spermatids .

在睾丸中，WGA可与精母细胞的高尔基区以及精子细胞各期发育阶段的顶体结合，而SBA及PNA则与晚期阶段顶体结合。

In the testis , WGA showed affinity for Golgi apparatus of the spermatocytes and the early stages of acrosome formation of the spermatids , while SBA and PNA for the late stages of acrosome formation .

2倍体生精细胞、4倍体生精细胞、单倍体圆形精子细胞同时增多。

Diploid spermatozoa , tetraploid and round haploid spermatids increased simultaneously .

精子细胞高尔基体的冰冻蚀刻电镜观察

Freeze - etching studies of the Golgi apparatus in rat spermatids

异卵双生是指精子细胞分别受精两个不同的卵细胞发育成两个不同的胚胎

That 's when two sperm cells fertilize two seperate eggs .

不育病人精液中精子细胞的分离与鉴定

Isolation and Identification of Spermatids in Semen of Male Infertile Patients

但是精子细胞的完全成熟尚未实现。

But mature of the spermatid was still hard to achieved .

小鼠精原细胞体外分化为精子细胞的研究

Study on in vitro differentiation of mouse spermatogonia into spermatids

显微操作法提取混合斑中精子细胞方法的探讨

The exploring of a method for isolating sperm cells from mixture sample

头帽期精子细胞内质网增多，有泡状、管状，并互相吻合形成交错的网络；

In cap phase ER increased and anastomosed to form a network ;

精子细胞之间存在细胞联系（桥粒）。

There exist cell junctions ( desmosome ) between the two spermatids .