Spermatozoon Cell
Mostrando 1-7 de 7 artigos, teses e dissertações.
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1. Recombinant gonadotropin therapy to improve spermatogenesis in nonobstructive azoospermic patients – A proof of concept study
ABSTRACT Purpose: Nonobstructive azoospermia (NOA) associated with primary spermatogenic failure is a common cause of male infertility usually considered untreatable; however, some reports have suggested that hormonal stimulation to boost the intra-testicular testosterone level and spermatogenesis might increase the chance of achieving pregnancy using homol
International braz j urol. Publicado em: 2022
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2. Criopreservação de espermatozóides eqüinos comparando duas curvas de congelamento combinadas com diferentes diluentes comerciais: uma análise laboratorial / Cryopreservation of equine spermatozoa comparing different freezing rates combined with commercial extenders: laboratorial analysis
Durante o processo de criopreservação de sêmen, os espermatozóides sofrem alguns danos que resultam na diminuição da fertilidade deste. O presente estudo foi realizado com o objetivo de avaliar os efeitos da utilização combinada de duas curvas de congelamento com dois diluentes comerciais (FR-5® e Botu-Crio®) sobre a criopreservação de sêmen eq�
Publicado em: 2010
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3. Análise morfológica das espermátides e dos espermatozóides de Chrysomya megacephala (Fabricius) (Diptera: Calliphoridae) nos tratos reprodutores
Diptera constitutes one of the four largest orders of insects. The Oriental latrine-fly Chrysomya megacephala (Fabricius) belongs to the family Calliphoridae and is associated with medic, veterinary, sanitary and forensic issues. The aim of this research was to characterize the utrastructural aspects of the spermiogenesis and spermatozoa of the C. megacephal
Publicado em: 2008
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4. A espermiogenese em Boophilus microplus (Canestrini, 1887) (Acari:ixodidae) : aspectos estruturais e ultra-estruturais
The objective of this study was to describe the spermatogenesis of the cattle tick (Boophilus microplus) (Canestrini, 1887), based on histological, histochemical, morphologic and ultrastructural infromation. Spermatogenesis occurs in the testis of ticks which begin their blood repast. The gametic cell lineage is isolated in cysts. Spermiogenesis begins in th
Publicado em: 1998
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5. Ultrastructural aspects of spermatogenesis in the common marmoset (Callithrix jacchus).
The pattern of normal spermatogenesis in the common marmoset, Callithrix jacchus, is described and a system classifying the spermatogenic cycle into nine successive stages is presented. In contrast to most previous studies of spermatogenesis, the classification system developed in this study depends more upon the recognition of characteristic cell associatio
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6. Targeted Deletion of the Epididymal Receptor HE6 Results in Fluid Dysregulation and Male Infertility
Human epididymal protein 6 (HE6; also known as GPR64) is an orphan member of the LNB-7TM (B2) subfamily of G-protein-coupled receptors. Family members are characterized by the dual presence of a secretin-like (type II) seven-transmembrane (7TM) domain and a long cell adhesion-like extracellular domain. HE6 is specifically expressed within the efferent ductul
American Society for Microbiology.
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7. Bacteriophage Active Against the Lactic Acid Beverage-Producing Bacterium Lactobacillus casei
A virulent bacteriophage which causes a decrease in acid production during fermentation of a lactic acid beverage named Yakult with Lactobacillus casei was isolated from the abnormal fermentation tank and named PL-1. L. casei S strain was the exclusive host cell among 18 lactic acid bacteria tested. The plaque was round with an average diameter of about 0.5