Abstract Study question Does sperm selection by thermotaxis increase competent spermatozoa count? Summary answer When compared to capacitation alone, our findings suggest an improvement in the availability of high quality after terms motility and morphology. What is known already Thermotaxis a natural mechanism that guides through female genital tract. It has been previously shown that, mice mo...

Heterotopic pregnancy occurs when intrauterine and ectopic pregnancy are concomitant; overall rate rises from 1/30.000 to 1.5/1000 in assisted reproductive technology pregnancies. HIV (human immunodeficiency virus) patients are at increased risk of heterotopic pregnancies due to the greater frequency of assisted reproductive technology and pelvic inflammatory disease. We report the first case o...

Nuclear transfer procedures have been recently applied for clinical and research targets as a novel assisted reproductive technique and were used for increasing the oocyte activity during its growth and maturation. In this review, we summarized the nuclear transfer technique for germinal vesicle stage oocytes to reconstruct the maturation of them. Our study covered publications between 1966 and...

Scholars of differing political affiliation and the President's Council on Bioethics have called for regulation of assisted reproductive technology (ART) that would emulate many aspects of the regulatory system of the United Kingdom, in particular that of the Human Fertilisation and Embryology Authority. Specifically, scholars and the Council have argued that research in the U.S. involving game...

OBJECTIVE To characterize the prevalence of objections to assisted reproductive technologies among obstetrician-gynecologists. METHODS We conducted a national probability sample mail survey of 1,800 practicing U.S. ob-gyns. Criterion variables were whether physicians object to artificial insemination or in vitro fertilization. We also presented seven patient scenarios and asked respondents if...

Background: Understanding the physiological and psycho-social effects of pregnancy through Assisted Reproductive Technologies (ARTs) will enable health care providers to identify and treat any adverse outcomes, and provide support to women seeking fertility treatments. The aim of this paper was to review studies describing prenatal care in pregnancy through ARTs. Methods: A systematic search o...

Twins and higher–order multiple pregnancies account for approximately 3% of all gestations in the United States (Ananth et al, 2004) and seem to be stabilized since 2006 after a dramatically increase since the beginning of the 1970s (Vayssière et al, 2011). There are two main causes for the change in the rate of multiple pregnancies: advanced maternal age and use of assisted reproductive techni...