We propose a novel automatic tracking system capable of tracking fast-moving, small objects under extreme conditions by using high-speed visual feedback for assessing sperm chemotaxis. The system shows remarkable performance and versatility, good enough for practical use in biology. Experimental results showed that we successfully achieved continuous stable tracking of swimming ascidian spermat...

Background: Male infertility is a widespread problem and increased number of mast cells-induced by some drugs like sulpiride atipycal antipsychotic drug, ara described in the testis of males, exhibiting impaired sper-matogenesis and fertility disorders. In this study number of mast cells and sertoli cells, thickness of seminiferous tubule’s lamina propria and sperm concentration and viability i...

Background Sertoli cells located in seminiferous tubular basement membrane and surrounds different types of germ cell and they were only somatic cell type that directly contacts germ cells. These cells have Several role like support activities, nutrition of germ cells.During spermatogenesis, expression of SOX3 is necessary for differentiation of spermatogonia A. SOX3 is a transcription factor, ...

Segregation distortion has been reported to occur in a number of the trinucleotide repeat disorders. On the basis of a sperm typing study performed in patients of Japanese descent with Machado-Joseph disease (MJD), it was reported that disease alleles are preferentially transmitted during meiosis. We performed a sperm typing study of five MJD patients of French descent and analysis of the poole...

BACKGROUND Testicular cancer (TC) patients have a high survival rate, and the question of post-therapy recovery of sperm production and its dependence on genetic predisposition is of major interest. METHODS Ejaculates were obtained from 112 TC patients at one or more of the following time points: post-orchidectomy, or 6, 12, 24, 36 and 60 months post-therapy. The lengths of the androgen recep...

Characteristics of the developmental stages of spermatids during spermiogenesis and phylogenetic classicfication of the species using sperm ultrastructures in male Crassostrea ariakensis were investigated by transmission electron microscope observations. The morphology of the spermatozoon of this species has a primitive type and is similar to those of Ostreidae. Ultrastructures of mature sperms...

Despite their conserved functional role in sexually reproducing organisms, spermatozoa are a diverse and rapidly evolving cell type. This phenomenon is largely attributed to sexual selection in polygamous species where sperm from multiple males compete to fertilize a limited number of oocytes. Drosophila have proven to be a particularly informative model system for the study of spermatogenesis ...

Oocytes of LT/Sv mice have anomalous cytoplasmic and nuclear maturation. Here, we show that in contrast to the oocytes of wild-type mice, a significant fraction of LT/Sv oocytes remains arrested at the metaphase of the first meiotic division and is unable to undergo sperm-induced activation when fertilized 15 hours after the resumption of meiosis. We also show that LT/Sv oocytes experimentally ...

tau.amegroups.com © Translational Andrology and Urology. All rights reserved. Agarwal et al. in their most recent paper (1) propose a clinical guideline on the use of sperm DNA damage testing in infertility treatment. This guideline is extremely relevant for fertility specialists and further insight into the topic is in high demand as the debate regarding the role of DNA damage testing is still...

OBJECTIVE To assess whether lesbian mothers of 17-year-old adolescents conceived through donor insemination are satisfied with their choice of a known, open-identity, or unknown sperm donor and whether the mothers' satisfaction is associated with psychological health problems in the index adolescent offspring. DESIGN Mixed-method study. SETTING Not applicable. PATIENT(S) One hundred twent...