Male Reproduction Tract
Mostrando 1-10 de 10 artigos, teses e dissertações.
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1. Predictive factors for sperm retrieval and sperm injection outcomes in obstructive azoospermia: do etiology, retrieval techniques and gamete source play a role?
Obstructive azoospermia is a relatively common male infertility condition. The main etiologies of obstructive azoospermia include congenital, surgical-derived, traumatic and post-infectious cases. Although seminal tract reconstruction is a cost-effective treatment in most cases, this approach may not be feasible or desired in some cases. In such cases, assis
Clinics. Publicado em: 2013
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2. Restrição protéica in utero : desenvolvimento sexual e histofisiologia do sistema reprodutivo de ratos machos / In utero protein restrition : sexual development and histophysiology of the rat male reproductive tract
In the past few years the worldwide recognition of the relevance of nutrition as a basis for social and economic development has been growing. In developing countries such as Brazil undernutrition is a socioeconomic problem caused by poor nutrition and low income. The birth of children with low birth weight is considered an important public health problem, w
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 26/02/2010
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3. Caracterização do trato reprodutor masculino e dos espermatozoides em vespas do genero Pegoscapus (Hymenoptera, Chalcidoidea) / Characterization of the male reproductive tract and spermatozoa in wasps of the genus Pegoscapus (Hymenoptera, Chalcidoidea)
As vespas da família Agaonidae, são as únicas entre as vespas de figo que polinizam as figueiras possuindo uma identidade espécie-específica em relação à planta. A relação de polinização das vespas do figo com as figueiras é de um mutualismo obrigatório: a planta necessita das vespas para a dispersão do pólen e para a polinização e, por sua
Publicado em: 2008
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4. Estudo dos efeitos da inibiÃÃo crÃnica do Ãxido nÃtrico na reproduÃÃo de ratos machos / Study of the effect of the chronic inhibition of nitric oxide in the reproduction of male rats
Nitric Oxide (NO) derived from L-arginine by the nitric oxide synthase (NOS) which is expressed by various isoforms, is considered to be na important messenger molecule in several organ systems including the male genital tract. This study analysed the possible effects of L-NAME (NG-nitro-L-arginine methyl ester), a nonselective NOS inhibitor on testicilar de
Publicado em: 2002
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5. Determinação da presença de anticorpos anti-espermatozoides no semen de casais submetidos a tecnicas de reprodução assistida
Antisperm antibodies (ASA) has been responsabilized as a well-stablished cause of male infertility. Conditions that disrupt the blood-testis barrier or changes in the female genital tract, could trigger its production. These ASA interfere in several steps of the fertilization, compromising the success of the assisted reproduction procedures. With the goal of
Publicado em: 1999
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6. Disruption of the protein C inhibitor gene results in impaired spermatogenesis and male infertility
Protein C inhibitor (PCI) is a nonspecific, heparin-binding serpin (serine protease inhibitor) that inactivates many plasmatic and extravascular serine proteases by forming stable 1:1 complexes. Proteases inhibited by PCI include the anticoagulant activated protein C, the plasminogen activator urokinase, and the sperm protease acrosin. In humans PCI circulat
American Society for Clinical Investigation.
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7. Novel Partners of SPAG11B Isoform D in the Human Male Reproductive Tract1
Human sperm-associated antigen 11 (SPAG11) is closely related to beta-defensins in structure, expression, and function. Like the beta-defensins, SPAG11 proteins are predominantly expressed in the male reproductive tract, where their best-known major roles are in innate host defense and reproduction. Although several hypotheses have emerged to describe the ev
Society for the Study of Reproduction.
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8. VANGUARD1 Encodes a Pectin Methylesterase That Enhances Pollen Tube Growth in the Arabidopsis Style and Transmitting Tract
In flowering plants, penetration of the pollen tube through stigma, style, and transmitting tract is essential for delivery of sperm nuclei to the egg cells embedded deeply within female tissues. Despite its importance in plant reproduction, little is known about the underlying molecular mechanisms that regulate the navigation of the pollen tube through the
American Society of Plant Biologists.
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9. Studies on the pathogenesis of the pseudohermaphroditism in the mouse with testicular feminization
The pathogenesis of the male pseudohermaphroditism in the mouse with X-linked testicular feminization (Tfm) has been investigated by comparing testosterone formation, the effects of androgen administration, and the metabolism of testosterone-1,2-3H in normal mice and Tfm mice of varying ages. First, it was established that the adult Tfm animal, in contrast t
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10. Transcobalamin II in human seminal plasma.
Study of cobalamin-binding proteins revealed seminal plasma to be the most concentrated site of transcobalamin II in man. The next richest normal fluid, blood, has approximately one-tenth its concentration. Normal seminal unsaturated cobalamin-binding capacity averaged 15,030 +/- 7,290 pg/ml, of which 11,550 +/- 6,660 pg/ml was transcobalamin II. Transcobala