نتایج جستجو برای: spermatogenesis index

تعداد نتایج: 404000  

Journal: :international journal of advanced biological and biomedical research 0
zahra akbarizadeh department of veterinary medicine, university of urmia, urmia, iran golamreza najafi assistant professor, department of anatomy and embryology, faculty of veterinary medicine, university of urmia, urmia, iran

spermatogenesis process during which the male germ cells are produced at each stage of the disorder, it can lead to infertility. the aim of this study was to evaluate the effect of fennel and yarrow on spermatogenesis in adult micereceiving chemotherapy is cyclosporine. for this study, 32 male wistar rats with an average weight of 20 ± 200 g were randomly divided into four groups (control, cycl...

Journal: :international journal of reproductive biomedicine 0
nasrin takzare esmaeil samizadeh saeed shoar masoumeh majidi zolbin mohammad naderan ali lashkari

background: there are numerous investigations on wide range of issues that disrupt regulatory spermatogenesis, individuals who are exposed to drug abuse faced infertility and immature spermatogenesis. objective: the aim of this study was to evaluate the addiction effects of morphine and its derivatives on rats spermatogenesis. materials and methods: 40 male wistar rats were randomly divided int...

Golamreza Najafi Zahra Akbarizadeh

Spermatogenesis process during which the male germ cells are produced at each stage of the disorder, it can lead to infertility. The aim of this study was to evaluate the effect of fennel and yarrow on spermatogenesis in adult micereceiving chemotherapy is cyclosporine. For this study, 32 male Wistar rats with an average weight of 20 ± 200 g were randomly divided into four groups (control, cycl...

Journal: :Iranian journal of basic medical sciences 2015
Mohammad-Reza Esmaili-Nejad Homayoon Babaei Reza Kheirandish

OBJECTIVES Leptin is a novel and interesting hormone for anyone trying to lose weight, but its effects on male gonad structure in longitudinal study is unknown. The present study was designed to explore morphometrical changes of mouse testicular tissue after long-term administration of leptin. MATERIALS AND METHODS Thirty healthy mature male mice were randomly assigned to either control (n=15...

2013
Fereshteh Khaneshi Ozra Nasrolahi Shahriar Azizi Vahid Nejati

OBJECTIVE(S) Reproductive dysfunction is a consequence of diabetes. Diabetes is associated with changes in testicular tissue. Sesame oil contains large amounts of polyunsaturated fatty acids and lignin with antioxidant activity, vitamin E, and monounsaturated fatty acid (MUFA). The present study investigated the effects of sesame on testis histology and male reproductive parameters in streptozo...

Journal: :Human reproduction update 2010
Konstantinos A Toulis Paschalia K Iliadou Christos A Venetis Christos Tsametis Basil C Tarlatzis Ioannis Papadimas Dimitrios G Goulis

INTRODUCTION A non-invasive test, which could predict the presence of sperm during a testicular sperm extraction (TESE) procedure in men with non-obstructive azoospermia (NOA), would be of profound clinical importance. Inhibin B (Inh-B) and anti-Müllerian hormone (AMH) have been proposed as direct markers of Sertoli cell function and indirect markers of spermatogenesis. METHODS A search was c...

2017
Tengfei Liu Lingling Wang Hong Chen Yufei Huang Ping Yang Nisar Ahmed Taozhi Wang Yi Liu Qiusheng Chen

Apoptosis is a tightly controlled process by which tissues eliminate unwanted cells. Spontaneous germ cell apoptosis in testis has been broadly investigated in mammals that have an associated spermatogenesis pattern. However, the mechanism of germ cell apoptosis in seasonally breeding reptiles following a dissociated spermatogenesis has remained enigmatic. In the present study, morphological ev...

Journal: :Tissue & cell 2011
I Quagio-Grassiotto R J Ortiz M H Sabaj Pérez C Oliveira

Spermatic characteristics were studied in 10 species representing several distinct groups within the catfish family Doradidae. Interestingly, different types of spermatogenesis, spermiogenesis and spermatozoa are correlated with intrafamilial groups previously proposed for Doradidae. Semi-cystic spermatogenesis, modified Type III spermiogenesis, and biflagellate sperm appear to be unique within...

Journal: :iranian journal of applied animal science 2013
a. yilmaz a. ozdal gokdal

in this review, we aim to examine the effect of extrinsic and intrinsic factors on spermatogenesis process taking into account a complex signaling pathway. primarily, it is suggested that retinoic acid (ra) has a vital function in spermatogenesis process and it is considered to be essential for completion of spermatogonia into mature spermatozoa. in the present review, the key effects of retino...

Journal: :Cancer research 1999
M L Meistrich G Wilson I Huhtaniemi

Previous studies have shown that treatment of rats with gonadotropin-releasing hormone (GnRH) analogues or steroids either before exposure to procarbazine or radiation or after irradiation enhances subsequent levels of spermatogenesis. We demonstrate here that giving a GnRH agonist after procarbazine injection also enhances spermatogenesis and fertility. We also demonstrate that GnRH agonist st...

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