Introducción: La infertilidad afecta al 15 por ciento de las parejas en edad fértil, de las que aproximadamente 4-8 por ciento requerirán técnicas de reproducción asistida de alta tecnología. Con la incorporación de la mujer a la vida laboral y la consiguiente postergación de la maternidad es pos...
Granulosa cells (GCs) are essential components of follicles and play a role in regulating follicle development. The aim of this study was to investigate certain cellular components involved in the proliferation, differentiation and functional characteristics of granulosa cells in the success of fertiliza...
Abstract The present study evaluated the effect of cryoprotectants, semen diluents and chicken lines during pellet method of semen cryopreservation. Three different experiments were conducted; Experiment 1 - semen was cryopreserved using dimethylformamide (DMF) at 6% and 9% concentrations in two semen di...
Abstract A Savior Sibling is a child who is born to provide an organ, bone marrow or cell transplant, to a sibling that is affected with a fatal disease. There are created with the in vitro fertilization and pre-implantation genetic diagnosis and, in the process, the ethical standards for organ donation...
Summary Objective: To evaluate the effect of male factor infertility on intracytoplasmic sperm injection (ICSI) outcomes compared with a control group presenting isolated tubal factor. Method: This retrospective study included 743 couples undergoing ICSI as a result of isolated male factor and a contro...
Este estudo qualitativo analisou as perceções de casais quanto aos fatores que contextualizam o consentimento livre e esclarecido na criopreservação de embriões, a partir de 34 entrevistas semiestruturadas, em Portugal. Analisaram-se os dados segundo os princípios da grounded theory. Dos resultados...
Donantes de Tejidos,
Factores de Riesgo,
Fertilización In Vitro/métodos,
Fertilización In Vitro/estadística & datos numéricos,
Inducción de la Ovulación/métodos,
Inducción de la Ovulación/estadística & datos numéricos,
Infertilidad Masculina,
Inyecciones de Esperma Intracitoplasmáticas/estadística & datos numéricos,
Modelos Lineales,
Semen,
Tasa de Natalidad/tendencias,
Transferencia de Embrión/estadística & datos numéricos
ANTECEDENTES: La hiperestimulación ovárica controlada (HEOC) es uno de los componentes fundamentales de los ciclos de fecundación in-vitro (FIV). HEOC se ha realizado con gonadotrofinas exógenas de uso diario, agregando un componente de estrés adicional al tratamiento. La aparición de una FSH recom...
BACKGROUND: Nitric oxide (NO) has been shown to be important in sperm function, and the concentration of NO appears to determine these effects. Studies have demonstrated both positive and negative effects of NO on sperm function, but have not been able to provide a clear link between NO concentration and...
Óxido Nítrico/farmacología,
Capacitación Espermática/efectos de los fármacos,
Motilidad Espermática/efectos de los fármacos,
Fertilización In Vitro/métodos,
Óxido Nítrico/análisis,
Óxido Nítrico Sintasa/antagonistas & inhibidores,
Nitroprusiato/farmacología,
omega-N-Metilarginina/farmacología,
Supervivencia Celular,
Técnicas In Vitro,
Factores de Tiempo
O diagnóstico genético pré-implantacional, associado a técnicas de reprodução assistida como a fertilização in vitro, permite a seleção de pré-embriões euploides para transferência. Nos últimos anos, tem sido indicado visando o aumento nas taxas de sucesso de tratamento, na sua forma de ras...
