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Showing 1 to 20 of 61 for “"epididymal"”.
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Cryopreservation of Domestic Cat Epididymal Spermatozoa
… and could still effectively freeze domestic cat epididymal spermatozoa, for the purpose to sort spermatozoa into X and Y, using flow cytometry. In the first experiment we compared a TesT (Tes + Tris) 20% egg yolk extender (control) to a modified human sperm preservation medium (HSPM) and a Tris …
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Characterization of the Epididymal Region of the Rooster
The epididymal region (rete testis, efferent ductules and epididymal duct) of the male reproductive tract is essential for the production of fertile sperm. Two diseases or dysfunctions of avian efferent ductules resulting in decreased fertility have been reported. Efferent ductules comprise the …
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Comparison of Murine Epididymal and Seminal Vesicle Proteinase Inhibitors.
Mammalian sperm must undergo a long and circuitous journey to reach their goal of fertilizing the ovum. This journey begins with sperm production in the seminiferous tubules of the testes.
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Dynamic changes of TDP-43 in testicular and epididymal sperm
… known about the functions of TDP-43 during sperm epididymal maturation. One in six couples worldwide struggles with infertility with male factor accounting for half the cases, highlighting the importance of better understanding the mechanisms regulating spermatogenesis and sperm maturation. The …
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Comparison of epididymal and ejaculated sperm collected from the same Holstein bulls
Salvaging of epididymal sperm from injured or deceased animals allows for the propagation of favorable traits from endangered or genetically superior males. Techniques developed in domestic species can also serve as the foundation for the collection, cryopreservation and utilization of epididymal …
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The Role of Estrogen Receptor Alpha in Epididymal Sperm Structure and Function
… effects on sperm appear to result from defective epididymal function and not a direct effect on spermatogenesis, as ERalphaKO germ cells transplanted into wildtype testes yield normal offspring. It has been previously shown that the absence of a functional ERalpha leads to defects in efferent duct …
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Binding of Insulin to Rat Epididymal Adipocytes and Purification of Their Plasma Membranes
Made available in DSpace on 2014-12-11T22:22:21Z (GMT). No. of bitstreams: 1 7317457.pdf: 7245817 bytes, checksum: 00fbfc363d00915673e1929baba1ebe1 (MD5) Previous issue date: 1972
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Characterization of the lipid composition of washed and percoll gradient centrifuged epididymal mouse sperm.
… gradient centrifuged (PGC) capacitated (PGCS) epididymal mouse sperm. Fatty acid methyl esters were generated from PC and PE by acid methanolysis and their identity was analyzed by gas chromatography. (Abstract shortened by UMI.)
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Localization of P450 aromatase in sperm and estrogen receptors in the epididymal region of the rooster
The epididymal region of the rooster (rete testis, efferent ductules, and epididymal duct) has an important role in the production of fertile sperm by controlling the luminal microenvironment required for sperm maturation. Even though androgen is the major hormone involved in regulating functions …
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Avian Infectious Bronchitis Virus: A Tropism for the Rooster Reproductive Tract and Effects on Reproductive Performance
The epididymal region of the rooster consists of the rete testes, the efferent ductules and the epididymal duct. In the epididymal region, the spermatozoa gain the ability to move and acquire surface proteins. The specialized microenvironment of the epididymal region is vital for these developments …
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P450 aromatase expression in germ cells and sperm of the adult mouse and rat testis and epididymis
… interest for years. Testicular germ cells and epididymal sperm have been hypothesized to be capable of synthesizing active P450 aromatase (P450arom), the estrogen synthesizing enzyme. This investigation was undertaken to establish that testicular germ cells and epididymal sperm contain active …
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Preservation of sperm harvested from the rat, caprine, equine, and bovine epididymis
… “window of opportunity” to harvest and preserve epididymal sperm would be beneficial for further research in sperm preservation and assisted reproductive technologies. The objective of these studies was to determine 1) the “window of opportunity” to collect viable rat, caprine, equine and bovine …
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Effect of selection for testosterone production on testicular morphology and daily sperm production in pigs.
… (P < 0.3). Body weight, testicular weight, and epididymal weight were recorded for boars from H (n=82) and L (n=44) castrated at an average age of 211 d and 97 kg. Testicular tissues were sampled from animals castrated in generation 20 (H, n=46 and L, n=13). Volume densities for Leydig cells, …
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Effect of seminal plasma on cryopreservation and function of bovine spermatozoa
… ejaculated spermatozoa (Experiment 1) and cauda epididymal spermatozoa, both fresh and frozen (Experiment 2).2) determine the effect of additional SP on sperm transport in the female using cryopreserved ejaculated sperm (Experiment 3) or cryopreserved cauda epididymal sperm (Experiment 4). In …
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Molecular Interactions During Fertilization: Sperm -Egg Binding and Regulation of the Acrosome Reaction
… other testicular cell types. Western analysis of epididymal sections indicated CASK might be proteolytically processed during epididymal maturation. Because sperm acquire the ability to bind zona proteins, acrosome react, and fertilize eggs during epididymal maturation, CASK processing may play a …
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Investigation of galactosyltransferase and α-lactalbumin-like proteins in mammalian reproductive tracts / by Yulu Tang
… and b-lac-like proteins are widely present in epididymal plasma of various mammalian species and their function in reproduction; whether GalTase is also present in luminal plasma of the female reproductive tract, where sperm capacitation and fertilization occur; and, whether GalTase is also the …
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Autophagy maintains the homeostatic environment in the male reproductive organs playing a key role in fertility
… model, knockdown of autophagy affects the epididymal environment leading to poor sperm quality. Moreover, the seminal vesicles are smaller as autophagy is crucial for seminal fluid production, highlighting a critical post-testicular role for autophagy in male fertility. Restoration of …
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Purification and identification of sulfated Lewis X binding proteins in boar sperm
… multiple sLeX and SiLN putative receptors in epididymal and ejaculated sperm; furthermore, some of these receptors have overlapping characteristics that include comparable molecular weights and requirement of Ca2+ for adhesion (Chapter 3). Investigation of sLeX receptors in ejaculated sperm by …
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Reduced adipose tissue hypoxia as a potential mechanism by which exercise and/or low fat diet reduces inflammation in obese mice
… (n=32), adipose tissue hypoxia was measured in epididymal fat pads using pimonidazole hydrochloride (injected intraperitonealy at a concentration of 60 mg/g body weight) and detected via ELISA. Results- Exercise and diet interventions had similar effects at attenuating body weight and epididymal …
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Relationship Between Testosterone and Dihydrotestosterone With Microbiota and Toll-Like Receptor Protein Localization in the Male Pig Reproductive Tract Prior to and Post Pubertal Attainment
… TLR4 in pre- and post-pubertal boar testes and epididymal tissues. Intact reproductive tracts of crossbred boars (n = 4 pre-pubertal and n = 7 post-pubertal) were harvested and tissues (testis, epididymis, prostate, seminal vesicle, and bulbourethral gland) were stored at -80 degrees C for …
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