Sperm Parameter
Mostrando 1-12 de 12 artigos, teses e dissertações.
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1. Vasectomy re-reversal: effectiveness and parameters associated with its success
ABSTRACT Introduction: When the vasectomy reversal (VR) fails, and the patient desires natural conception with his sperm, vasectomy re-reversal (VRR) is the only alternative. Purpose: To determine the VRR effectiveness and whether specific parameters can be associated with its success. Materials and Methods: We retrospectively evaluated 18 consecutive vas
Int. braz j urol.. Publicado em: 2021-06
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2. Time has come to provide infertile men with an optimal fertility pathway
ABSTRACT Introduction: When the vasectomy reversal (VR) fails, and the patient desires natural conception with his sperm, vasectomy re-reversal (VRR) is the only alternative. Purpose: To determine the VRR effectiveness and whether specific parameters can be associated with its success. Materials and Methods: We retrospectively evaluated 18 consecutive vas
Int. braz j urol.. Publicado em: 2021-06
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3. Editorial comment: Is testosterone replacement an effective treatment of secondary premature ejaculation?
ABSTRACT Introduction: When the vasectomy reversal (VR) fails, and the patient desires natural conception with his sperm, vasectomy re-reversal (VRR) is the only alternative. Purpose: To determine the VRR effectiveness and whether specific parameters can be associated with its success. Materials and Methods: We retrospectively evaluated 18 consecutive vas
Int. braz j urol.. Publicado em: 2021-06
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4. Pre-operative COVID-19 screening: a model to provide non-discretionary care for urologic patients
ABSTRACT Introduction: When the vasectomy reversal (VR) fails, and the patient desires natural conception with his sperm, vasectomy re-reversal (VRR) is the only alternative. Purpose: To determine the VRR effectiveness and whether specific parameters can be associated with its success. Materials and Methods: We retrospectively evaluated 18 consecutive vas
Int. braz j urol.. Publicado em: 2021-06
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5. Use of the ACP® and BTS extenders for cooling at 15°C white-lipped peccary (Tayassu pecari) semen
RESUMO: Para auxiliar na conservação da espécie e permitir o uso racional do queixada em cativeiro é de grande importância o conhecimento sobre a reprodução da espécie. Objetivou-se avaliar o efeito dos diluidores de sêmen ACP-103®, ACP-116® e BTS na viabilidade espermática durante a refrigeração do sêmen do Tayassu pecari. Foram refrigerados
Pesq. Vet. Bras.. Publicado em: 01/07/2019
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6. Reproductive characteristics of captive greater rhea (Rhea americana) males reared in the state of São Paulo, Brazil
Rheas (Rhea americana) belongs to the ratite group. Considering the commercial significance of this birds, some techniques, such as semen collection, were standardized. In this study, 107 male rheas (3 to 4 years of age) reared in commercial farms in the state of São Paulo, Brazil, were used. Semen was collected during the breeding and off-breeding seasons
Revista Brasileira de Ciência Avícola. Publicado em: 2010-03
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7. Efeito da suplementação alimentar com selênio + vitamina E em caprinos submetidos à insulação escrotal.
Objetivando verificar o efeito da suplementação alimentar com Selênio e Vitamina E (Selevit E) nos parâmetros testiculares e seminais de caprinos submetidos a estresse térmico induzido por insulação escrotal (IE), utilizou-se 12 animais com idade variando entre 7 e 8 meses, os quais foram distribuídos aleatoriamente em dois grupos (G1= Controle; G2=
Publicado em: 2007
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8. Effects of bovine semen cryopreservation on sperm plasmatic, acrosomal, and mitochondrial membranes and chromatin structure using fluorescent probes / Efeitos da criopreservação do sêmen bovino sobre as membranas plasmática, acrossomal e mitocondrial e estrutura da cromatina dos espermatozóides utilizando sondas fluorescentes
The process of cryopreservation causes damages in the sperm cellular function which may lead to a reduction in fertility. New techniques to evaluate sperm viability may improve the process of semen evaluation. The present work was divided in two experiments. Experiment 1 aimed the development and validation of practical techniques with high repetibility for
Publicado em: 2005
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9. Correlated effects of sperm competition and postmating female mortality
Adaptations in one sex may impair fitness in the opposite sex. Experiments with Drosophila melanogaster have shown that seminal fluid from the male accessory gland triggers a series of postmating responses in the female, including increased egg laying rate and lower remating propensity, but that accessory gland proteins also increase female death rate.
The National Academy of Sciences.
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10. Effects of Character Weighting and Species Sampling on Phylogeny Reconstruction: A Case Study Based on DNA Sequence Data in Cetaceans
Different phylogenetic analyses of the same genetic data set can yield conflicting results, depending on the choic of parameter settings and included taxa. This is particularly true in studies involving data sets where levels of homoplasy are high and likely to obscure the phylogenetic signal. Filtering of this phylogenetic noise can be attempted, with varyi
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11. Effects of p-nonylphenol and resveratrol on body and organ weight and in vivo fertility of outbred CD-1 mice
The aim of this study was to analyse the multigenerational effects of para-nonylphenol (NP) and resveratrol (RES) on the body weight, organ weight and reproductive fitness of outbred CD-1 mice. The data indicate that in male mice, NP had an effect on the weight of selected reproductive organs and the kidneys in the parental (P) generation males. Effects on s
BioMed Central.
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12. Antigen conformation determines processing requirements for T-cell activation.
We studied the difference in requirements for processing and presentation to a single T-cell clone of four different forms of the same epitope of sperm whale myoglobin--namely, on the native protein, on two conformationally altered forms of the protein, or as a 22-residue antigenic peptide fragment. The T-cell clone was I-Ed-restricted and specific for an ep