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Medical ethics: an interview with Anita Silvers

Medical ethics assists healthcare professionals to make decisions respectful of persons who happen to be their patients.

13 Aug 2012

Research focuses on evolution of sex and gamete function

The propagation of every animal on the planet is the result of sexual activity between males and females of a given species. But how did things get this way? Why two sexes instead of one? Why are sperm necessary for reproduction and how did they evolve? These as-yet-unresolved issues fascinate Timothy Karr, a developmental geneticist and evolutionary biologist at Arizona State University's Biodesign Institute.

13 Aug 2012

Geisel professor concerned about steroid abuse by adolescents

Leslie Henderson is concerned about steroid abuse, not necessarily by sports luminaries like Barry Bonds and Mark McGwire, but rather by adolescents.

7 Aug 2012

DNA inherited from mother can speed up male ageing

Women outlive men by about five to six years but why? By age 85 there are roughly six women to every four men and by age 100 the ratio is more than two to one.

3 Aug 2012

Childhood obesity could be related to growing problems with infertility

A dramatic increase in childhood obesity in recent decades may have impacts that go beyond the usual health concerns - it could be disrupting the timing of puberty and ultimately lead to a diminished ability to reproduce, especially in females.

1 Aug 2012

Conception plans miscarry with sperm DNA damage

Sperm with damaged DNA are more likely to cause spontaneous pregnancy loss, report researchers.

30 Jul 2012

Study extends scientific understanding of how pheromones activate the vomeronasal organ

The vomeronasal organ (VNO) is one of evolution's most direct enforcers. From its niche within the nose in most land-based vertebrates, it detects pheromones and triggers corresponding basic-instinct behaviors, from compulsive mating to male-on-male death matches. A new study from the Stowers Institute for Medical Research, published online in Nature Neuroscience on July 29, 2012, extends the scientific understanding of how pheromones activate the VNO, and has implications for sensory transduction experiments in other fields.

30 Jul 2012

Vitamin A insufficiency linked to hand, foot and mouth disease

Vitamin A status is associated with immunity to, and pathogenic condition of, hand, foot, and mouth disease in children, say researchers whose study results show that the majority of those with the infectious disease also had vitamin A insufficiency.

26 Jul 2012

Study identifies genetic markers that influence protein involved in regulating oestrogen, testosterone levels

A research study led by the Peninsula College of Medicine and Dentistry, University of Exeter, and Boston University School of Medicine, in collaboration with a global consortium, has identified genetic markers that influence a protein involved in regulating oestrogen and testosterone levels in the bloodstream.

21 Jul 2012

Study identifies genetic markers that influence sex hormone-binding globulin

A research study led by Boston University School of Medicine (BUSM) and the University of Exeter in the United Kingdom, in collaboration with a global consortium, has identified genetic markers that influence a protein involved in regulating estrogen and testosterone levels in the bloodstream.

21 Jul 2012

Health risks of egg donation for young females

News is just breaking in India about Sushma Pandey, a 17-year-old young woman who died in 2010, two days after her third "egg donation." Her death is being attributed to the procedures used to extract eggs from healthy, desirable young females like Ms. Pandey. These eggs are often resold to affluent westerners for use in commercial production of their children. Her post-mortem report states she had "one abrasion, four contusions and a blood clot in the head, plus six injection marks" as well as "congestion in the ovaries and uterus."

14 Jul 2012

Opinion pieces address family planning issues on World Population Day

The London Summit on Family Planning took place Wednesday, July 11, also recognized as World Population Day. The goal of the summit was to raise money to improve access to family planning services to prevent maternal and child mortality. The following summaries describe opinion pieces that address these issues.

13 Jul 2012

BGI, BioMed Central launch GigaScience journal

BGI, the world's largest genome sequencing institute, and their publishing partner BioMed Central, a leader in scientific data sharing, announce the launch of a new journal, GigaScience, which publishes large-scale biological research in a unique format.

12 Jul 2012

Italy's first successful pregnancy and delivery following transplantation of ovarian tissue

Although the first successful preservation of fertility from the freezing, thawing and grafting of ovarian tissue was reported eight years ago, the technique has remained experimental and confined to a few specialist centres. Now, with the announcement of a first pregnancy (and subsequent live birth) in Italy following the transplantation of ovarian tissue, there are indications that fertility preservation is moving into the mainstream of reproductive medicine and into a greater number of centres.

4 Jul 2012

SET policy reduces risk of perinatal mortality in IVF and ICSI infants

A policy of single embryo transfer (SET) reduces the risk of perinatal mortality in infants born as a result of IVF and ICSI. The conclusion emerged from an analysis of more than 50,000 births recorded in the Australian and New Zealand Assisted Reproduction Technology Database between 2004 and 2008, where the introduction of an SET policy has been associated with a reduction in overall perinatal mortality for IVF and ICSI babies.

4 Jul 2012

Perinatal mortality risk in IVF reduced by single embryo transfer

4 Jul 2012

Cigarette smoke reduces production of Fallopian tube gene - BAD

Cigarette smoke reduces the production of a Fallopian tube gene known as "BAD", which helps explain the link between smoking and ectopic pregnancy. The finding, from scientists led by Drs Andrew Horne and Colin Duncan at the Medical Research Council (MRC) Centre for Reproductive Health in Edinburgh, UK, was described today at the annual meting of ESHRE (European Society of Human Reproduction and Embryology) in Istanbul.

4 Jul 2012

PGD for breast cancer genes BRCA1/2 is now feasible

Preimplantation genetic diagnosis (PGD) for the breast cancer genes BRCA1/2 is now feasible and established, with good success rates for those treated, according to investigators from the reproduction, oncology and genetics centres of the university hospitals of Maastricht and Brussels.

3 Jul 2012

Childlessness increases risk of hospitalisations for psychiatric disorders among infertile women

While many small studies have shown a relationship between infertility and psychological distress, reporting a high prevalence of anxiety, mood disorders and depressive symptoms, few have studied the psychological effect of childlessness on a large population basis. Now, based on the largest cohort of women with fertility problems compiled to date, Danish investigators have shown that women who remained childless after their first investigation for infertility had more hospitalisations for psychiatric disorders than women who had at least one child following their investigation.

3 Jul 2012

Women with higher intake of dietary saturated fats have fewer mature oocytes available for IVF

Women with a higher intake of dietary saturated fats have fewer mature oocytes available for collection in IVF, according to results of a study from the Harvard School of Public Health funded by the US National Institutes of Health.

3 Jul 2012