Tag Archives: chromosomes
Scientists discover ‘extra’ chromosome linked to infertility
Most chromosomes have been around for millions of years. Now, researchers from the Stowers Institute for Medical Research, in Kansas City, MO, have revealed the dynamics of a new, very young chromosome in fruit flies that is similar to chromosomes … Continue reading
The genetic causes of female infertility
Many women are unable to conceive and deliver a healthy baby due to genetic factors. Sometimes this is due to an inherited chromosome abnormality. Other times it is because of a single-gene defect passed from parent to child. Genetic disorders and … Continue reading
Study may help improve IVF success
In humans, a fertilized egg is no guarantee of reproductive success. Most embryos stop developing and perish within days of fertilization, usually because they have an abnormal number of chromosomes. Now, researchers at Columbia University Vagelos College of Physicians and … Continue reading
Study: ‘Why is it so hard for humans to have a baby?’
New research by a scientist at the Milner Centre for Evolution at the University of Bath, England, suggests that “selfish chromosomes” explain why most human embryos die very early on. The study, published in PLoS Biology, explaining why fish embryos are … Continue reading
Turning X chromosome ‘off and on again’ critical for oocyte development
Researchers at the Centre for Genomic Regulation (CRG) in Barcelona have identified a potential new diagnostic marker that predicts the successful and efficient development of mammalian egg cells. The findings could pave the way for generating artificial oocytes in the … Continue reading
A missing ‘motor’ causes eggs to fail
Human eggs often contain the wrong number of chromosomes, leading to miscarriages and infertility. A research team led by Melina Schuh at the Max Planck Institute (MPI) for Multidisciplinary Sciences, in Germany, has discovered that human eggs are missing an … Continue reading
Lagging chromosomes cause of female infertility?
Why do women over 35 have more difficulty getting pregnant? After discovering one of the causes of age-related female infertility, researchers at the University of Montreal Hospital Research Centre (CRCHUM) suggest that it will be possible in the future to … Continue reading
Research identifies a key player in fertility cell division
A research collaboration based in Kumamoto University in Japan has clarified how homologous chromosome pairing–a process necessary for sperm and egg formation where paternally- and maternally-derived chromosomes match and exchange genetic information during meiosis–attracts factors that play a monitoring role. This … Continue reading
Recurrent miscarriage linked to chromosomal abnormalities
When a couple loses a pregnancy, and especially when the same couple loses multiple pregnancies, doctors are often at a loss to explain why. For about 40 to 60 percent of couples with recurrent miscarriage (RM), the condition remains unexplained, … Continue reading
Research offers clues to women’s fertility changes over time
Throughout life, a woman’s fertility curve goes up and down, and researchers have now shown why. The results might have impact on fertility counseling and in the longer term for treatment of infertility. Researchers have mapped out some of the … Continue reading
