نتایج جستجو برای: sperm morphology

تعداد نتایج: 179765  

2013
Basri Cakiroglu Orhun Sinanoglu Ramazan Gozukucuk

Background. To compare preoperative and postoperative sperm parameters such as sperm count, motility, and morphology in patients with normal sperm concentration with teratozoospermia and asthenozoospermia. Materials and Methods. Hundred and six patients with varicocele associated with male infertility over a 5-year period were included into the study. Pre- and postvaricocelectomy seminal fluid ...

2009
Masanori KOYAGO Ken NAKADA Nobuo TSUNODA Masaharu MORIYOSHI Yutaka SAWAMUKAI

To clarify the physiological changes of sperm morphology in active Thoroughbred stallions during the breeding season, we examined the dismount semen collected from the penile urethra immediately after service. The spermatozoa were analyzed for relationships between the morphology and the stallion's age or the number of services. Seasonal variation was apparent in the rate of the sperm tail abno...

Ansari MH Bahman Zadeh M Mohammadi Roshandeh A, Mortazavi M Salehi I

Background: Obesity is a medical condition in which excess body fat has accumulated to the extent that it may have an adverse effect on health, leading to reduced life expectancy and/or increased health problems such as infertility and sub fertility. Lipid peroxidation contributes to the damage of the sperm plasma membrane and result to infertility. In this study effects of Antioxidants (E, C, ...

Journal: :Human reproduction 2012
Jill A Attaman Thomas L Toth Jeremy Furtado Hannia Campos Russ Hauser Jorge E Chavarro

BACKGROUND The objective of this study was to examine the relation between dietary fats and semen quality parameters. METHODS Data from 99 men with complete dietary and semen quality data were analyzed. Fatty acid levels in sperm and seminal plasma were measured using gas chromatography in a subgroup of men (n = 23). Linear regression was used to determine associations while adjusting for pot...

Journal: :avicenna journal of medical biochemistry 0
rohollah setarehbadi student research committee, hamadan university of medical sciences, hamadan, iran mojgan atabakhash student research committee, hamadan university of medical sciences, hamadan, iran amir fattahi student research committee, hamadan university of medical sciences, hamadan, iran aboozar mohagheghi student research committee, hamadan university of medical sciences, hamadan, iran asad vaisi-raygani fertility and infertility center, kermanshah university of medical sciences, kermanshah, iran hossain mahjub department of epidemiology and biostatistics, faculty of public health, hamadan university of medical science, hamadan, iran

objectives lipid components of spermatozoa have an important role in its functional activity. in this study the concentration of cholesterol, phospholipid, triacylglycerol and total lipid in different subsets of human spermatozoa, isolated as three fractions by a discontinuous puresperm gradient, was determined. methods aliquots of the liquefied semen samples (n=107) were layered on top of the ...

Journal: :International journal of andrology 1998
A M Mahmoud S Gordts A Vereecken A Serneels R Campo L Rombauts F H Comhaire

The present study was undertaken to assess the relationship between the results of conventional semen analysis and the sperm motility index (SMI) as measured by the sperm quality analyser (SQA), and to evaluate these in relation to the fertilization and/or pregnancy outcome of assisted reproduction. SMI determinations and conventional semen analyses were performed on 223 samples from subfertile...

Journal: :Human reproduction 2001
S Gunalp C Onculoglu T Gurgan T F Kruger C J Lombard

The aim of the study was to determine the semen parameters of a proven fertile population and to compare these parameters with that of a subfertile group in the same region. Sixty-nine fertile male patients were studied and compared with 93 patients recruited at an infertility clinic. A sub-sample of patients was matched according to age. Sixty-one were studied in the fertile group and 62 in th...

Journal: :Asian journal of andrology 2006
J Erenpreiss M Spano J Erenpreisa M Bungum A Giwercman

Sperm chromatin/DNA integrity is essential for the accurate transmission of paternal genetic information, and normal sperm chromatin structure is important for sperm fertilizing ability. The routine examination of semen, which includes sperm concentration, motility and morphology, does not identify defects in sperm chromatin structure. The origin of sperm DNA damage and a variety of methods for...

Journal: :Methods 2018
Pinkie J Eravuchira Simcha K Mirsky Itay Barnea Mattan Levi Michal Balberg Natan T Shaked

The selection of sperm cells possessing normal morphology and motility is crucial for many assisted reproductive technologies (ART), especially for intracytoplasmic sperm injection (ICSI), as sperm quality directly affects the probability of inducing healthy pregnancy. We present a novel platform for real-time quantitative analysis and selection of individual sperm cells without staining. Towar...

Journal: :International Journal of Andrology 1994

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