Materials and Methods: This was a prospective, cohort study in Hajar Hospital of Shahrekord, southwest Iran from March, 2013 to June, 2014 (within 15 months). Thirty women achieving pregnancy with intrauterine insemination and in vitro fertilization were compared with 60 women getting pregnant naturally. Between the days 59 and 83 after insemination, fetal CRL was examined by ultrasound. Then, ...

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 Human exposure to phenols, including bisphenol A and parabens, is widespread. Evidence suggests that paternal exposure to environmental chemicals may adversely affect reproductive outcomes. OBJECTIVES We evaluated associations of paternal phenol urinary concentrations with fertilization rate, embryo quality, implantation, and live birth. METHODS Male-female couples who underwent ...

The objective of this study was to determine whether or not reproductive performance in cattle produced by somatic cell nuclear transfer (SCNT) is significantly different from that of their genetic donors. To address this question, we directed two longitudinal studies using different embryo production procedures: (1) superovulation followed by artificial insemination (AI) and embryo collection ...

In vitro fertilisation (IVF) is the process by which oocytes and sperm are mixed in a petri dish, allowing fertilisation to occur outside the mother's body. Similarly to the genetic advantage obtained using artificial insemination with respect to the paternal parent, IVF affords the ability to more stringently select the maternal parent. Oocytes from one valuable female can be transferred into ...

In vitro fertilisation after stimulation of the ovulatory cycle has led to successful pregnancy. If more oocytes are recovered than are needed they may be left unfertilised, preserved, or donated to a recipient couple from whom oocytes cannot be obtained. A case of human pregnancy initiated by transfer of a donated embryo fertilised in vitro is reported. The donor was a 42 year old woman with p...

The distribution of conceptions after artificial insemination from a donor was studied in 259 conceptions at an artificial insemination clinic and found to be seasonal. Conception was not influenced by the number of donors or patients attending the clinic, the frequency of inseminations, or medical skill. Conception was more common from early winter until early spring (October to March) with a ...

Cumulus cells are a group of closely associated granulosa cells that surround and nourish oocytes. Previous studies have shown that cumulus cells contribute to oocyte maturation and fertilization through gap junction communication. However, it is not known how this gap junction signaling affects in vivo versus in vitro maturation of oocytes, and their subsequent fertilization and embryonic deve...

Spermatozoa from C57BL/6NNia mice (7- and 25-month-old males that produced offspring and 25-month-old males incapable of producing offspring which either mated or did not mate after being paired for 1 month with proven-fertile females) were tested in in-vitro fertilization studies. The 7-month-old males fertilized the largest number of oocytes (80-86%) in vitro and 79% of them subsequently deve...

Medical issues faced by HIV-affected couples include transmission risks between partners and between mother and child, as well as the technologies and procedures available to reduce those risks. Assisted reproductive techniques discussed are artificial insemination, in vitro fertilization, intracytoplasmic sperm injection, self-insemination, and timed intercourse. It is important that physician...