oligospermia/hypoxia

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11 niðurstöður

Varicocele: relation between anoxia and hypospermatogenesis.

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Three groups of patients were analysed: varicocele patients with abnormal seminal fluid (17 cases), variococele and normal sperm (seven cases) and normal males (17 cases). Blood gas was secured in the internal spermatic vein, perpheric vein and femural artery, in an attempt to evaluate the

[Varicocele: relation between anoxia and hypospermatogenesis].

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Hypoxia-induced apoptosis of mouse spermatocytes is mediated by HIF-1α through a death receptor pathway and a mitochondrial pathway.

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Hypoxia in vivo induces oligozoospermia, azoospermia, and degeneration of the germinal epithelium, but the underlying molecular mechanism of this induction is not fully clarified. The aim of this study was to investigate the role of the death receptor pathway and the mitochondrial pathway in

Biological Network Model of Effect of Chronic Intermittent Hypoxia on Spermatogenesis in Rats

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BACKGROUND The aim of this study was to explore the effect of obstructive sleep apnea hypopnea syndrome (OSAHS) on spermatogenesis and the effects of the expression of related proteins. MATERIAL AND METHODS Rats in Group A were normoxic (exposed to a normal level of oxygen). Rats in Group B were

Evidence that chronic hypoxia causes reversible impairment on male fertility.

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OBJECTIVE To evaluate the effect of chronic hypoxia on human spermatogenic parameters and their recovery time. METHODS Seminological parameters of six male healthy mountain trekkers were evaluated in normoxia at sea level. After 26 days exposure to altitude (ranging from 2 000 m to 5 600 m,

Aquaporin-9 immunohistochemistry in varicocele testes as a consequence of hypoxia in the sperm production site.

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Aquaporin-9 (AQP-9) regulates tissue hydration by promoting transmembrane exchanges of both water and solutes, such as lactate. The latter is a key metabolite of primary spermatocytes and of maturing haploid germ cells (h-GCs). The present investigation was aimed at immunolocalising human AQP-9 in

Biochemical changes in testicular varicocele.

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The precise mechanism of the hypospermatogenesis associated with varicocele has remained uncertain, although there have been a number of speculations on the etiology of the associated infertility. The altered spermatogenesis has been attributed to the reflux of toxic metabolites from either adrenal

Primary testicular lesions in the twisted testis.

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OBJECTIVE To investigate primary lesions in twisted testes. METHODS The histologic study of testicular specimens obtained from men who had suffered testicular torsion. METHODS The conditions required for material selection were the knowledge of the exact time of torsion and the presence of

[Impact of plateau environment on seminal characteristics of native Tibetans and immigrated Tibetan Hans].

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UNASSIGNED To investigate the characteristics of the semen parameters of native Tibetans and immigrated Tibetan Hans in the high-altitude area and analyze the influence of altitude adaptation on male fertility. METHODS This study included 1 563 infertile male patients, including 698 native Tibetans

Primary ciliary dyskinesia in the dog.

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A disorder caused by congenital ciliary dysfunction occurs in dogs. Most of the clinical signs are directly or indirectly attributable to immotile or dyskinetic cilia and spermflagella. Due to severely impaired mucociliary clearance, a continuous mucoid nasal discharge and intermittent sneezing and

Semen analysis in sickle cell disease.

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Male reproductive function has been poorly studied in sickle cell disease. Low sperm count, impaired motility of spermatozoa and spermatogenic arrest during testicular biopsies have been described in this situation. In the present series of patients, the main seminal changes found were reduced

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