Past studies have shown that biparental care of offspring can be affected negatively when females and males are exposed to bisphenol A (BPA. In a study published today in the journal PLOS One, researchers at the University of Missouri found that mice pups whose grandparents had been exposed to BPA, had different vocalization patterns. This, in turn, could also affect the amount of parental care they received. Scientists believe results could have important relevance to humans.
In vitro fertilization affects the regulatory region of genes essential for placental and embryonic growth, as well as the birth weight. A new study suggests that the effects depend on genetic variation inherited from the parents. This information could be useful in development of assisted reproduction technologies.
"Our results demonstrate, for the first time, the presence of biologically active SPGCs in testicular biopsies of chemotherapy-treated PCPBs, and their capacity to develop in vitro to different stages of spermatogenesis, including the generation of sperm-like cells," according to lead researcher Prof. Mahmoud Huleihel, a member of BGU's Shraga Segal Department of Microbiology, Immunology and Genetics. "This study may open the way for new therapeutic strategies for fertility preservation of PCPBs and for azoospermic patients."
Changes in sea surface temperature affect the survival of albatross during their first year at sea, resulting in a reduced population growth rate when temperatures are warmer than the current average, a new study published in the Journal of Animal Ecology has revealed.
There has long been a debate among biologists over whether the evolution of new traits requires new genes to evolve or whether they can arise simply from the recruitment of existing genetic pathways, says developmental biologist Craig Albertson at UMass Amherst. Now his lab reports evidence that novel traits can come from expanding gene-regulatory modules that have always existed in an organism.
Constructing biological tissues, such as skin, muscle, or bone, in customized shapes is now one step closer. Researchers at EMBL have succeeded in guiding the folding and thus shape of tissues with optogenetics: a technique to control protein activity with light. Nature Communications publishes their results, with implications for regenerative medicine, on June 18.
New preclinical research shows a gene already linked to a subset of people with autism spectrum disorder is critical to healthy neuronal connections in the developing brain, and its loss can harm those connections to help fuel the complex developmental condition. Scientists report in Developmental Cell their data clarify the biological role of the gene CHD8 and its protein CHD8 in developing oligodendrocytes, cells that form a protective insulation around nerves.
In a new study, researchers from Sweden and Britain have investigated how the endocrine-disrupting substance linuron affects reproduction in the West African clawed frog, Xenopus tropicalis. The scientists found that linuron, which is used as a pesticicide, impaired the males' fertility, and that tadpoles developed ovaries instead of testicles to a greater extent, which caused a female-biased sex ratio. The results are published in the journal Scientific Reports.
A study led by UNC's Sylvia Becker-Dreps, M.D., M.P.H., reviewed more than 675,000 pregnancies in the US to determine if the Tdap vaccine given to a mother will reduce the chances of her child developing pertussis during the first 18 months of life. The results show a decrease in overall cases of pertussis, and most notably, in pertussis hospitalization in infants whose mothers were immunized during pregnancy.
Neonatal intensive care units increasingly encourage meaningful touch and skin-to-skin care -- aka 'kangaroo care' -- between parents and premature babies to aid the babies' development. But a Michigan children's hospital practicing skin-to-skin care noticed an unwanted side effect in 2016 -- a spike in Staphylococcus aureus (SA) infections among newborns.