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Tag: "offs" at biology news

Report that delayed motherhood decreases life expectancy of mouse offspring

The June 2005 issue of Biology of Reproduction includes a special paper by a team of Spanish scientists indicating that delayed motherhood in mice results in shorter life expectancy and reduced body weight in their offspring. . .. In what the editors of Biology of Reproduction feel will be a controversial topic of discussion, a team of reproductive biologists...

Males with elevated levels of testosterone lead shorter lives but have more success siring offspring

Comparative studies have studied testosterone levels and related them to mating systems and aggression, but very few studies have attempted to relate testosterone to fitness, that is, the combination of lifetime reproductive success and survival, in the wild or experimentally. Over nine breeding seasons, Wendy Reed (North Dakota State University) and her colleagues followed a group of dark-eyed j...

'Empty nester' parent birds use recruitment calls to extend offspring care

By studying a habituated population of pied babblers (Turdoides bicolor) in the Kalahari Desert, researchers have discovered a surprising new way in which parent birds can extend the period of their care of offspring. The findings are reported by Andrew Radford of the University of Cambridge and Amanda Ridley of the University of Cape Town and appear in the September 5th issue of Current Biology,...

The price of vanity: Mating with showy males may reduce offspring's ability to fight off pathogens

In many animals, males advertise to potential mates with showy traits, many of which are linked to testosterone levels. However, a new study suggests that, in fish, choosing a flashier mate may cause future generations to be more susceptible to pathogens. . In the January 2007 issue of The American Naturalist, a new study by Judith Mank (Uppsala University, Sweden) finds that mating with males w...

Turn-ons and turn-offs for neurons

Our brain consists of billions of nerve cells enabling to learn, remember and reason. Every time we think and experience, touch, smell or fear, millions of neurons in our brain becomes active. These nerve cells communicate with each other by chemical and electrical impulses to compute incoming sensory information and integrate it via distinct brain regions. With 20,000 - 25,000 genes in our geno...

Cigarette smoke alters DNA in sperm, genetic damage could pass to offspring

. .. “Here we are looking at male germline mutations, which are mutations in the DNA of sperm. If inherited, thes...
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(Date:7/10/2014)... in the West African nation Burkina Faso today ... Sayana Press has the potential to increase access ... system and in communities by combining a lower-dose ... medroxyprogesterone acetate)with the BD Uniject injection system. , ... countries expected to begin introducing Sayana Press in ...
(Date:7/9/2014)... healthy women differ from bacteria in women with ... from Loyola University Chicago Stritch School of Medicine. ... in the American Society for Microbiology,s online journal ... play a role in female urinary health. , ... poorly understood, condition with symptoms similar to urinary ...
(Date:7/9/2014)... Cancer Research Centre (CNIO) have discovered that NANOG, an ... division in stratified epitheliathose that form part of the ... the vaginain adult organisms. According to the conclusions of ... , this factor could also play a role in ... the oesophagus and skin. , The pluripotency factor NANOG ...
Breaking Biology News(10 mins):Injectable contraceptive launched in Burkina Faso to expand choice and address unmet need 2Injectable contraceptive launched in Burkina Faso to expand choice and address unmet need 3CNIO scientists discover that pluripotency factor NANOG is also active in adult organisms 2
(Date:7/9/2014)... If you think winning is one of the key ... Winning along with other mental bonuses ranked near the bottom ... one of 11 big fun factors, according to a new ... when it comes to the "fun" factor, very little research ... into this elusive conceptuntil now. , The results of this ...
(Date:7/9/2014)... Medicine at the University of Pennsylvania in collaboration with ... million grant from the National Cancer Institute (NCI) to ... patients with malignant pleural mesothelioma, a rare, aggressive and ... lining of the lungs and is caused almost exclusively ... clinical trial and additional studies looking at the effects ...
(Date:7/9/2014)... stromal support cells and immune cells and the ... the development of diseases could open new therapeutic ... the conclusion of a review article by scientists from ... Nature . , Prof. Peter Carmeliet: "Consider the review ... cancer cells has been examined in minute detail for ...
(Date:7/9/2014)... N.Y. Although feelings are personal and subjective, ... code that objectively represents emotions across different senses, ... by Cornell University neuroscientist Adam Anderson. , "We ... the orbitofrontal cortex, an area of the brain ... code which captures an individual,s subjective feeling," says ...
(Date:7/9/2014)... than watching World Cup highlights, Brian Williams refreshing old ... unfortunate positions on railings. A University of Colorado Cancer ... shows that YouTube also allows researchers, journals, and ... topics of skin cancer and prevention. , "No matter ... of how we communicate around the world," says Chante ...
Breaking Medicine News(10 mins):Health News:Being a good sport ranks as the top 'fun' factor in study of youth sports 2Health News:Being a good sport ranks as the top 'fun' factor in study of youth sports 3Health News:Penn mesothelioma program receives $8 million NCI grant 2Health News:Wake-up call for more research into cell metabolism 2Health News:Study cracks how the brain processes emotions 2Health News:Study of dermatology on YouTube shows new ways science reaches public 2
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