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teratozoospermia/albumina
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10 risultati
Effect of isolation by albumin density gradients on ultrastructure of human spermatozoa.
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Unlike results with glass wool filtration, based on identical criteria, no evidence was observed in this study for induced ultrastructural damage to the cell membrane and acrosome of heads of spermatozoa during isolation by the albumin density gradient technique. To the contrary, significant numbers
Semen characteristics of the captive Indian white-backed vulture (Gyps bengalensis).
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The present paper describes, to our knowledge for the first time, the successful collection and evaluation of semen from the Indian white-backed vulture (Gyps bengalensis), a critically endangered bird. Over a period of 2 yr, semen was collected using the manual massage method and evaluated for
[Tamoxifen treatment of oligospermia. Mechanism of action and metabolism].
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210 males with idiopathic oligozoospermia or oligo-astheno-teratozoospermia were treated with tamoxifen (2 X 10 resp. 2 X 20 mg daily) over a period of five months. Investigations which were performed concomitantly revealed no significant changes in body weight, blood pressure, blood sedimentation
Correlation of biochemical constituents of seminal plasma with semen quality in Teddy goat (Capra hircus) bucks.
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This study was planned to determine the relationship between semen quality parameters and the levels of biochemical constituents of seminal plasma of Teddy (Capra hircus) buck semen. For this purpose, semen ejaculates were collected from five mature healthy Teddy bucks. All the experimental bucks
Seasonal changes in reproductive parameters and seminal plasma constituents of rams in Afyon province of Turkey.
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The objective of the present study was to describe seasonal changes in semen quality, serum testosterone and seminal plasma constituents for 9 months in 10 rams from a mature local (Daglic) and imported breed (Chios) under Afyon province conditions typical for the internal Anatolian region. Sperm
Tyrosine phosphorylation pattern in sperm proteins isolated from normospermic and teratospermic men.
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BACKGROUND
In mammalian system, spermatozoa are not able to fertilize the oocyte immediately upon ejaculation, thus they undergo a series of biochemical and molecular changes which is termed capacitation. During sperm capacitation, signal transduction pathways are activated which lead to protein
Comprehensive assessment of the effect of Sphenocentrum jollyanum root extract on male reproductive activity in albino rats.
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Aim: To evaluate the effect of methanol extract from the Sphenocentrum jollyanum root on male reproductive activity. Methods: Male albino rats were treated orally with distilled water (vehicle for the extract; control) and 50, 100 and 150 mg kg-1 body weight of Sphenocentrum jollyanum root extract
Artificial oocyte activation with calcium ionophore for frozen sperm cycles.
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Fertilization problems are the major problems that may be faced in 30-55% of the patients during an intracytoplasmic sperm injection (ICSI) cycle. A successful oocyte activation depends on factors related to both sperm and oocyte, and one of the important factors that mediates the process is Ca2+
Effect of combined density gradient centrifugation on X- and Y- sperm separation and chromatin integrity.
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BACKGROUND
It has been claimed that by using different washing methods, the sperms can be separated according to size, motility, density, chromosomal content and surface markings and charge. These methods also reduce sperm chromatin deficiencies and screen the sperms before applying in assisted
Generation of reactive oxygen species by equine spermatozoa.
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OBJECTIVE
To characterize generation of reactive oxygen species (ROS) by equine spermatozoa.
METHODS
Multiple semen samples collected from 9 stallions.
METHODS
Equine spermatozoa were separated from seminal plasma on a discontinuous polyvinylpyrrolidone (PVP)-coated silica gradient and resuspended
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