نتایج جستجو برای: progressive motility

تعداد نتایج: 154014  

2011
E. Kubovičová A. V. MAkAreVich E. ŠpalEKová Z. HEgEduŠová

The aim of the study was to evaluate motility parameters of Lacaune (Lc) and east-Friesian (eF) ram frozen-thawed spermatozoa by cASA (computer-Automated Sperm Analysis) technique in relation to their in vivo fertilizing ability. Fresh ejaculates were diluted in a Triladyl extender containing 20 % egg yolk, 6 % glycerol and 0.1 % trehalose and frozen in a liquid nitrogen vapour. The evaluation ...

Journal: :Journal of cell science 1995
G Perchec C Jeulin J Cosson F André R Billard

Carp spermatozoa are immotile in seminal plasma or in saline solution of high osmolality (> 400 mosmol kg-1). These 'quiescent' spermatozoa initiate a progressive forward motility when transferred in freshwater or in saline solution with low osmolality (< 160 mosmol kg-1). In this study we investigated 'in vitro' the relationship between sperm ATP content (measured by bioluminescence) and sperm...

2017
Qing Liu Yuan-Fei Zhou Run-Jia Duan Hong-Kui Wei Jian Peng Si-Wen Jiang

This study was aimed to evaluate the effects of dietary n-6:n-3 ratio and Vitamin E on the membrane properties and motility characteristics of spermatozoa in boars. Forty Duroc boars were randomly distributed in a 2 × 2 factorial design with two n-6:n-3 ratios (14.4 and 6.6) and two Vitamin E levels (200 and 400 mg kg-1 ). During 16 weeks of treatment, fresh semen was collected at weeks 0, 8, 1...

Journal: :Indian journal of biochemistry & biophysics 2010
M B Shamsi S Venkatesh R Kumar N P Gupta N Malhotra N Singh S Mittal S Arora D S Arya P Talwar R K Sharma R Dada

Excess reactive oxygen species (ROS) beyond the scavenging capacity of antioxidants leads to DNA damage and oxidation of lipoprotein components at the cellular and subcellular level. The oxidative stress (OS) adversely affects sperm function by altering membrane fluidity, permeability and impairs sperm functional competence. In the present study, the OS status in seminal plasma and blood serum ...

2014
Tahereh Esmaeilpour Mohmmad-Reza Zarei Soghra Bahmanpour Elham Aliabadi Ahmad Hosseini Mansooreh Jaberipour

BACKGROUND Application of follicular fluid (FF) and platelet-activating factor (PAF) in artificial insemination improves sperm motility. Lactate dehydrogenase C (LDH-C) is a key enzyme for sperm motility. In this study, the effects of FF and PAF on the sperm motility index and LDH-C expression were investigated. Moreover, LDH-C expression was compared between asthenozoospermic and normozoosperm...

2016
S. A. Lone J. K. Prasad S. K. Ghosh G. K. Das B. Balamurugan R. Katiyar M. R. Verma

AIM The aim of this study was to investigate the effect of incubation on freezability of cholesterol loaded cyclodextrin (CLC) treated buffalo spermatozoa. MATERIALS AND METHODS Semen samples with mass motility of 3+ and greater, collected from Murrah buffalo bulls were utilized. Immediately after collection, four equal groups of semen sample were made. Group I was kept as control and diluted...

Journal: :علوم دامی ایران 0
افشین سیفی جمادی دانشجوی دکتری، گروه علوم دامی، پردیس کشاورزی و منابع طبیعی دانشگاه تهران، کرج احمد زارع شحنه استاد، گروه علوم دامی، پردیس کشاورزی و منابع طبیعی دانشگاه تهران حمید کهرام استادیار، گروه علوم دامی، پردیس کشاورزی و منابع طبیعی دانشگاه تهران، کرج و استادیار مؤسسۀ تحقیقات واکسن و سرم سازی رازی، کرج ابوالفضل اکبری استادیار، مؤسسۀ تحقیقات واکسن و سرم سازی رازی محسن ضامن کارشناس علوم آزمایشگاهی، مؤسسۀ تحقیقات واکسن و سرم سازی رازی ابوالفضل واخیده کارشناس دامپزشکی، مؤسسۀ تحقیقات واکسن و سرم سازی رازی

four mature stallions were used to study the effect of enzymatic antioxidant catalase on freezability of turkmen stallion&apos;s sperm. collected semen from stallions were processed and pooled before being divided treatments (200×106  sperm/ml) and diluted with extenders supplemented with different levels of catalase [0 (control), 100 u/ml (cat100), 150u/ml (cat150) and 200u/ml (cat200)]. exten...

Journal: :تولیدات دامی 0
سید مونس جلالی کوهی خیلی دانش آموخته کارشناسی ارشد، گروه علوم دامی، دانشکده علوم کشاورزی، دانشگاه گیلان، رشت - ایران مهرداد محمدی دانشیار گروه علوم دامی، دانشکده علوم کشاورزی، دانشگاه گیلان، رشت - ایران محمد روستایی علی مهر دانشیار گروه علوم دامی، دانشکده علوم کشاورزی، دانشگاه گیلان، رشت - ایران

antioxidant effect of olive leaf extract (ole) was studied on motility, viability, plasma membrane integrity of spermatozoa and malondialdehyde production in 12 ross 308 roosters at their 30 weeks of age. semen samples were collected by abdominal massage in 5 times. in each session after the initial sperm assessment, collected samples were pooled and diluted with sexton extender.samples were sp...

علیقلی سبحانی, , فاطمه قلمبر دزفولی, , قاسم ساکی, ,

Background: Leukemia inhibitory factor (LIF) is a group of secreted glycoproteins with molecular weights ranging from 38-67 kD, resulting from differential protein glycosylation. LIF is constitutively expressed at high levels in the human fallopian tube epithelium and has an important role in the motility and vitality of sperm. In the present study, the effect of human recombinant LIF on human ...

A. Kheradmand, H. Babaei M. Taati,

Antioxidant properties of ghrelin have been demonstrated in recent studies. In the present study, theeffects of chronic administration of ghrelin on the motility and plasma membrane integrity of rat spermatozoa during incubation at 37ºC were investigated. Thirty 45-day-old male Wistar rats were divided into control and treatment groups. Rats in the treatment group were daily injected subcutaneo...

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