Globozoospermia is a rare disorder characterized by the presence of sperm with round head, lacking acrosome. Coiling tail around the nucleus has been reported since early human studies, but no specific significance has conferred it. By contrast, studies on animal models suggest that coiling tail around the nucleus could represent a crucial step of defective spermatogenesis, resulting in round-h...

Globozoospermia syndrome is a rare teratozoospermia with an incidence below 0.1%. Presence of 100% round sperm heads, absence of acrosome, and messy sperm body and tail are the main characteristics of this syndrome. The activation ability of oocytes and consequently the fertilization rate decrease due to the absence of acrosome. The pathogenesis of this syndrome is not clear [1-2]. Globozoosper...

The sperm quality supplied by producers is an urgent problem in the field of livestock breeding. Therefore, monitoring health male and great priority. study aimed to assess reproductive performance bulls using laboratory, clinical, morphological, ultrasound reflexological techniques. A total 17 heads Kazakh-white-headed, Holstein-Frieze Simmental breeds were studied. was evaluated diagnostic me...

The aim of the present study was to investigate the possible mechanism of Janus kinase (JAK)-signal transduction and activator of transcription (STAT)/PSMβ3 signaling in the occurrence of asthenozoospermia. We examined seminal fluid samples from 30 cases of asthenozoospermia and 30 healthy controls. Sperm was collected using the Percoll density gradient centrifugation method. The expression of ...

Background: Acrylamid (AA) is found in carbohydraterich foods that are prepared at high temperatures, such as French fries and potato chips. The toxic effects of AA in male animals include degeneration of epithelial cells of seminiferous tubules, decreased number of sperm and elevation in abnormal spermatozoa. The aim of this study was to evaluate the detrimental effects of AA on sperm paramete...

BACKGROUND No reports have been published about age-related sperm malformations in varicocele patients. AIM To investigate the distribution of abnormal sperm characteristics in adolescents, adults and older men with varicocele. SETTING AND DESIGN Records of semen analysis of 143 men aged 14 to 53 years who had evident left-sided varicocele detected by physical examination and confirmed by d...

for evaluation of citric acid and citrate effects on bovine epididymal protoplasmic droplets, fifty bovine testes were collected in the october 2007 till june 2008 from urmia slaughterhouse and transported to the laboratory in a cool container filled with 5 °c ice pack. caudal epididymis was incised and sperm cells were put into petri dishes containing hams f10 media with 10% fetal calf serum (...

Background Lipid peroxidation is known to cause various impairments to sperm cells and may play a major role in the etiology of male infertility. Asthenospermia is the main factor of male infertility and has significantly higher level of peroxidation than in normozoospermic males. MaterialsAndMethods Using thiobarbituric acid (TBA) assay procedure, we have determined the level of lipid peroxida...