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American Physical Therapy Association to host series on concussion in sports

As football season gets under way, the American Physical Therapy Association (APTA) will host a series on concussion in sports called "Head in the Game."

26 Aug 2012

Trevo Retriever effectively removes blood clots in patients with stroke

Every 40 seconds, someone in the United States has a stroke, usually caused when a clot blocks an artery that supplies blood to the brain. Now the results of two multicenter studies published online in The Lancet on August 26 are giving physicians new innovative tools proven to better remove these clots that block blood flow.

26 Aug 2012

Certain human diseases may have evolutionary epigenetic origins

Ninety-six percent of a chimpanzee's genome is the same as a human's. It's the other 4 percent, and the vast differences, that pique the interest of Georgia Tech's Soojin Yi. For instance, why do humans have a high risk of cancer, even though chimps rarely develop the disease? In research published in September's American Journal of Human Genetics, Yi looked at brain samples of each species. She found that differences in certain DNA modifications, called methylation, may contribute to phenotypic changes.

24 Aug 2012

Changes in DNA methylation might be linked to evolution of humans' vulnerability to diseases

Chimpanzees rarely get cancer, or a variety of other diseases that commonly arise in humans, but their genomic DNA sequence is nearly identical to ours. So, what's their secret? Researchers reporting in the September issue of the American Journal of Human Genetics, a Cell Press journal, have found that differences in certain DNA modifications, called methylation, might play a role.

24 Aug 2012

Gibbons use same vocal techniques as professional soprano singers

Have you ever heard an opera singing ape? Researchers in Japan have discovered that singing gibbons use the same vocal techniques as professional soprano singers. The study, published in the American Journal of Physical Anthropology, explains how recording gibbons singing under the influence of helium gas reveals a physiological similarity to human voices.

24 Aug 2012

New UCLA study pinpoints unique human patterns of gene activity in the brain

Human and chimp brains look anatomically similar because both evolved from the same ancestor millions of years ago. But where does the chimp brain end and the human brain begin? A new UCLA study pinpoints uniquely human patterns of gene activity in the brain that could shed light on how we evolved differently than our closest relative.

23 Aug 2012

Positron submits Drug Master File with FDA for production of API grade Sr-82

Positron Corporation, a leading molecular imaging healthcare company, is pleased to announce the submission of a Drug Master File (DMF), with the Federal Drug Administration (FDA), for the production of Active Pharmaceutical Ingredient (API) grade strontium-82, through its wholly owned subsidiary Manhattan Isotope Technology, LLC.

23 Aug 2012

Menopause prevents competition between a mother and her new daughter-in-law

The menopause evolved, in part, to prevent competition between a mother and her new daughter-in-law, according to research published today in the journal Ecology Letters.

23 Aug 2012

Reasoning and behavioral control dependent on different regions of frontal lobes

The frontal lobes are the largest part of the human brain, and thought to be the part that expanded most during human evolution. Damage to the frontal lobes-which are located just behind and above the eyes-can result in profound impairments in higher-level reasoning and decision making. To find out more about what different parts of the frontal lobes do, neuroscientists at the California Institute of Technology (Caltech) recently teamed up with researchers at the world's largest registry of brain-lesion patients.

22 Aug 2012

Ohio's three Clinical and Translational Science Award institutions establish IRB agreement

The three Clinical and Translational Science Award (CTSA) institutions in Ohio — Case Western Reserve University, University of Cincinnati and The Ohio State University — and their partnering institutions have established a statewide collaborative agreement allowing a single organization's Institutional Review Board (IRB) to assume IRB responsibilities on behalf of multiple institutions when conducting multicenter studies.

18 Aug 2012

Study helps explain how large DNA viruses undergo rapid evolution

Scientists have discovered that poxviruses, which are responsible for smallpox and other diseases, can adapt to defeat different host antiviral defenses by quickly and temporarily producing multiple copies of a gene that helps the viruses to counter host immunity.

17 Aug 2012

U of U researchers receive NIH grant to study cellular and molecular causes of blood clots

University of Utah Department of Medicine researchers have received $16 million from the National Institutes of Health (NIH) to set up a translational research center to study the cellular and molecular causes of blood clots, a serious threat to millions of people who have diabetes, are obese or have other metabolic disorders.

15 Aug 2012

FDA clears Stryker’s Trevo Pro Retriever to treat acute ischemic stroke

Stryker Neurovascular announced today that its Trevo Pro Retriever has been granted 510(k) market clearance by the U.S. Food and Drug Administration. The Trevo Pro Retriever is the next generation in clot removal technology from Stryker, utilizing proprietary Stentriever Technology for optimized clot integration and retrieval in patients experiencing acute ischemic stroke.

From Stryker 13 Aug 2012

Study investigates why organisms retain seemingly unnecessary stages in their development

Why, after millions of years of evolution, do organisms build structures that seemingly serve no purpose? A study conducted at Michigan State University and published in the current issue of The American Naturalist investigates the evolutionary reasons why organisms go through developmental stages that appear unnecessary.

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

Less sleep leads to more offspring in male pectoral sandpipers

During the breeding season, polygynous male pectoral sandpipers that sleep the least sire the most young. A team of researchers headed by Bart Kempenaers from the Max Planck Institute for Ornithology in Seewiesen has now discovered this extraordinary relationship.

10 Aug 2012

Study sheds more light on diet and home ranges of early hominins in South Africa

An international team of researchers, including Professor Francis Thackeray, Director of the Institute for Human Evolution at Wits University, will be publishing their latest research on what our early ancestors ate, online in the prestigious journal, Nature, on Wednesday, the 8th of August 2012 at 19:00 (SAST).

9 Aug 2012

Human HLA genes are evolving much more rapidly than previously thought

Human HLA genes - the genes that allow our immune system to tell the difference between our own cells and foreign invaders - are evolving much more rapidly than previously thought, according to an article online on August 3rd in Trends in Genetics. The resulting degree of variation improves our ability to fight off disease, but could also present challenges to current worldwide efforts aimed at identifying potential donors for patients undergoing stem cell transplantation.

6 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