نتایج جستجو برای: assisted reproduction technologies

تعداد نتایج: 389934  

Journal: :Environmental Health Perspectives 1997
D Holzman

In vitro fertilization, popularly referred to as IVF, has captured the attention of the public since its sensational introduction in 1978. Today assisted reproductive technology is available throughout most of the civilized world, and the practice is largely different from that used during the early days. Refinements in laboratory technology and clinical practice have allowed IVF to evolve into...

Journal: :Human reproduction 2007
Catherine A McMahon Frances L Gibson Jennifer L Allen Douglas Saunders

BACKGROUND The trend to older maternal age at first birth is well established in Western countries and biological risk factors, particularly declining fertility, are well documented. Less is known, however, about the psychosocial well-being of older first time parents. This study explores differences in psychosocial adjustment during pregnancy in older (maternal age >or= 38 years) and younger (...

Journal: :Indian journal of medical ethics 2007
Laxmi Murthy Vani Subramanian

2003
M Spriggs T Charles

In this paper we identify and evaluate arguments for and against offering assisted reproductive technologies (ART), specifically IVF, to HIV discordant couples (male partner HIV positive, female partner HIV negative). The idea of offering ART to HIV discordant couples generates concerns about safety and public health and raises questions such as: what is an acceptable level of risk to offspring...

Journal: :Journal of medical ethics 2003
M Spriggs T Charles

In this paper we identify and evaluate arguments for and against offering assisted reproductive technologies (ART), specifically IVF, to HIV discordant couples (male partner HIV positive, female partner HIV negative). The idea of offering ART to HIV discordant couples generates concerns about safety and public health and raises questions such as: what is an acceptable level of risk to offspring...

Journal: :journal of paramedical sciences 0
saeed zavareh school of biology, damghan university, damghan, iran. ali talebi department of anatomy, school of medicine, tehran university of medical sciences, tehran, iran. hadi hasanzadeh department of medical physics, semnan university of medical sciences, semnan, iran.

in assisted reproduction techniques (art) settings, reactive oxygen species (ros) can be produced from endogenous and exogenous sources during in vitro manipulation. endogenous sources of ros include gametes and embryo, whereas exogenous sources are oxygen tension, light exposure, culture media, and the nature of some protocols, such as centrifugation or cryopreservation. elevated ros productio...

Journal: :international journal of reproductive biomedicine 0
fatemeh nayeri marzieh aghahosseini ashraf alyasin firoozeh nili

background: today there is a rise in the number of newborns conceived by artificial reproductive techniques (art). numerous studies have been performed on the perinatal outcome of these pregnancies. however, there is limited data about the condition of health of these newborns in iran. objective: regarding the higher prevalence of probable complications and symptomatic congenital anomalies, we ...

Journal: :Theriogenology 2007
M B Wheeler E M Walters D J Beebe

During the last few decades in vitro production of mammalian embryos and assisted reproductive technologies such as embryo transfer, cryopreservation, and cloning have been used to produce and propagate genetically superior livestock. However, efficiencies of these technologies remain low. For these technologies to become more commercially viable, the efficiencies must improve. Despite this imp...

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