نتایج جستجو برای: headed sperm cells
تعداد نتایج: 1418975 فیلتر نتایج به سال:
background: ciprofloxacin is a commonly prescribed antibiotic in the treatment of genitourinary tract infection. objective: the aim of this study was to investigate the effects of ciprofloxacin on testis apoptosis and sperm parameters in rat. materials and methods: twenty male wistar rats were selected and randomly divided into two groups; control (n=10) and experimental (n=10). the experimenta...
background: in most mammals, the testis is always maintained at a lower temperature than that in the abdomen, and exposure of the testis to body temperature causes degeneration of germ cells. objective: in this research, the long effect of heat exposure on sperm parameters and microstructure of mouse testis were investigated. cryptorchid mouse were induced by exposure to abdominal heat. materia...
Sterile backcross (Be) males originate from the hybridization of Heliothis subflexa (Guennee) females to H. virescens (F.) males followed by recurrent backcrossing of the fertile female progeny to H. virescens males. Ultrastructural transmission electron microscope (TEM) studies of the postmeiotic maturation of eupyrene sperm cells in Be males, and comparisons with the cells in normal H. viresc...
The relationship between cytoplasmic incompatibility and the obligate intracellular alphaproteobacteria Wolbachia has for a long time been reported. Although molecular mechanisms responsible this reproductive alteration are beginning to be understood, effects of on germ cell structure dynamics have not yet fully investigated. We report here that presence in infected cysts elongating spermatids ...
Back ground & Aims : This study was designed to determine the effects of alcohol administration on sperm quality and testicular tissue pathogenesis. Materials & Methods : In this study, 20 male adult mice were divided into two groups as control (saline normal) and test (ethanol 3g/kg BW as 25% V/V). The rats were given by gastric intubation, daily for 45 days and then all the animals were...
Background: Women-headed households are more exposed to social damages than other women. Such condition remarkably influences the women’s health-related life quality. The present study is aimed to investigate the effect of an educational intervention in quality of life of women-headed households under protection of Tehran Welfare Organization, in 2015. Methods: In th...
sperm is particularly susceptible to reactive oxygen species (ros) during critical phases of spermiogenesis. however, the level of seminal ros is restricted by seminal antioxidants which have beneficial effects on sperm parameters and developmental potentials. mitochondria and sperm plasma membrane are two major sites of ros generation in sperm cells. besides, leukocytes including polymer phonu...
BACKGROUND Oxidative DNA damage is associated with male infertility. The aim of this study was to evaluate the oxidative DNA damage of sperm cells and blood leukocytes and to determine the levels of MDA and NO levels in seminal and blood plasma of idiopathic infertile men. MATERIAL AND METHODS The study enrolled 52 patients, including 30 infertile and 22 fertile men. MDA, NO, and 8-OHdG/106dG w...
BACKGROUND The aim of the present study was to define the effect of apoptosis on sperm quality and function. METHODS The apoptotic features in sperm were assessed in 60 subfertile subjects, using Annexin-V staining for phosphatidylserine (PS) externalization and Tdt-mediated dUTP nick end labelling (TUNEL) assay for DNA fragmentation. RESULTS On average, about 45% of the sperm were found to...
background: women-headed households are more exposed to social damages than other women. such condition remarkably influences the women's health-related life quality. the present study is aimed to investigate the effect of an educational intervention in quality of life of women-headed households under protection of tehran welfare organization, in 2015. methods: in this quasi-experimental stud...
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