OBJECTIVE To investigate temporal trends in multiple birth rates and associated stillbirth and neonatal mortality by socioeconomic deprivation and maternal age in England. DESIGN Population cohort study. SETTING England. PARTICIPANTS All live births and stillbirths (1 January 1997 to 31 December 2008). MAIN OUTCOME MEASURES Multiple maternity rate, stillbirth and neonatal death rate by ...

Infertility affects 20% of couples in Nigeria. Assisted reproductive techniques (ART) offered in Nigeria include in-vitro fertilization (IVF), gamete donation and surrogacy. This cross-sectional questionnaire study aimed at assessing the acceptability of ART to women seeking infertility treatment at the University College Hospital, Ibadan, Nigeria. Of the 307 respondents, 58.3% were aware of IV...

Background The multiple pregnancy incidence is increasing worldwide. This increased incidence is concerning to the health care system. This study aims to determine the frequency of multiple pregnancy and identify factors that affect this frequency in Tehran, Iran. MATERIALS AND METHODS This cross-sectional study included 5170 mothers in labor between July 6-21, 2015 from 103 hospitals with Ob...

The routine examination of semen, which assesses sperm concentration, percentage motility and morphology, does not identify subtle defects in sperm chromatin architecture. The focus on the genomic integrity of the male gamete has intensified recently due to the growing concern that genetic diseases may be transmitted via assisted reproductive techniques (ART). Accordingly, the intent of this re...

Three-dimensional ultrasound (3D US) is a new imaging modality, which is being introduced into clinical practice. Although this technique will not probably replace two-dimensional ultrasound, it is being increasingly used. It has been reported that 3D US is a very high reproducible technique. The endometrium has been paid special attention when using this technique. The aim of this paper is to ...

Assisted reproductive techniques (ART) are elective procedures in otherwise healthy patients. Therefore any complication occurring during treatment is iatrogenic. Sadly, the most serious and potentially life threatening complication, the ovarian hyperstimulation syndrome (OHSS) still frequently occurs. Abramov et al. (1999) report an increase in the incidence of OHSS and state that we are facin...

Male infertility is directly or indirectly responsible for 60% of cases involving reproductive-age couples with fertility-related issues. Nevertheless, the evaluation of male infertility is often underestimated or postponed. A coordinated evaluation of the infertile male using standardized procedures improves both diagnostic precision and the results of subsequent management in terms of effecti...

A central goal of evolutionary biology is to identify the genes and evolutionary forces that cause speciation, the emergence of reproductive isolation between populations. Despite the identification of several genes that cause hybrid sterility or inviability-many of which have evolved rapidly under positive Darwinian selection-little is known about the ecological or genomic forces that drive th...

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...