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Mitochondrial dysfunction in tissue stem cells can cause aging-associated degeneration

Aging-related tissue degeneration can be caused by mitochondrial dysfunction in tissue stem cells. The research group of Professor Anu Suomalainen Wartiovaara at the University of Helsinki, with their collaborators in Max Planck Institute for Biology of Aging, Karolinska Institutet and University of Wisconsin, reported on the 3rd January in Cell Metabolism their results on mechanisms of aging-associated degeneration.

4 Jan 2012

Tips on how to avoid the misery of New Year's hangover

Loyola University Health System family physician Dr. Aaron Michelfelder offers tips on how to avoid the misery of a New Year's hangover.

30 Dec 2011

First picture of how specialized neurons are organized in hairy skin

Compared to our other senses, scientists don't know much about how our skin is wired for the sensation of touch. Now, research reported in the December 23rd issue of the journal Cell, a Cell Press publication, provides the first picture of how specialized neurons feel light touches, like a brush of movement or a vibration, are organized in hairy skin.

23 Dec 2011

Optical coherence tomography measures changes in retinal cone cells

Humans see color thanks to cone cells, specialized light-sensing neurons located in the retina along the inner surface of the eyeball. The actual light-sensing section of these cells is called the outer segment, which is made up of a series of stacked discs, each about 30 nanometers (billionths of a meter) thick. This appendage goes through daily changes in length.

21 Dec 2011

Top-line results from Genzyme's teriflunomide and Rebif Phase III comparison trial on RMS

Genzyme, a Sanofi company, today reported top-line results from TENERE, a Phase III clinical trial comparing the effectiveness, safety and tolerability of once-daily oral teriflunomide to interferon beta-1a, an approved injectable therapy, in people with relapsing forms of multiple sclerosis.

20 Dec 2011

Gene therapy may promote growth of hair cells in inner ear

Normal hearing depends on the presence of healthy hair cells in the inner ear. Gene therapy has the potential to slow the loss of hair cells and promote the growth of hair cells that have already been damaged.

20 Dec 2011

Bed bugs deterred by body hair: Study

According to Sheffield, UK researchers hairy skin may be the key to avoiding being bitten by bed bugs. The study was reported in the journal Biology Letters. Researchers say the hair slows down the bed bugs and warns the victim.

18 Dec 2011

Hydrogel regenerates healthy, scar-free tissue on skin damaged by severe burns

Johns Hopkins researchers have developed a jelly-like material and wound treatment method that, in early experiments on skin damaged by severe burns, appeared to regenerate healthy, scar-free tissue.

14 Dec 2011

Increased sensitivity to low frequency vibration found in people with inherited hearing loss

People with a certain form of inherited hearing loss have increased sensitivity to low frequency vibration, according to a study by Professor Thomas Jentsch of the Leibniz-Institut f-r Molekulare Pharmakologie (FMP)/Max Delbr-ck Center for Molecular Medicine (MDC) Berlin-Buch and Professor Gary Lewin (MDC), conducted in cooperation with clinicians from Madrid, Spain and Nijmegen, the Netherlands.

9 Dec 2011

Breast cancer risks and management updates

A new report that looks at the environmental factors that affect risk of breast cancer is out. It suggests that women can reduce their risk by avoiding unnecessary medical radiation, forgoing hormone treatments for menopause that combine estrogen and progestin, limiting alcohol intake and minimizing weight gain.

8 Dec 2011

Longer lives of US Presidents contrary to popular belief

According to Dr. Michael Roizen U.S. Presidents may be aging twice as fast as the rest of us while they occupy the Oval Office. Roizen, chairman of the Wellness Institute at the esteemed Cleveland Clinic, is the developer of RealAge, whose premise is that one’s calendar age isn’t necessarily in sync with the actual wear and tear on the body.

7 Dec 2011

Relaxin improves poor blood flow and kidney function in a rat model of PKD

After a four-week course of the vasodilator hormone relaxin, kidney function and blood flow immediately improved in lab rats genetically altered to model polycystic kidney disease (PKD), a life-threatening genetic disorder, according to research presented on Dec. 6 at the American Society for Cell Biology Annual Meeting in Denver.

7 Dec 2011

New insight into why aminoglycoside antibiotics cause deafness

Peter Steyger's research on hearing is very personal. That's because Steyger - a research scientist with the Oregon Hearing Research Center at Oregon Health & Science University - is deaf. Now Steyger has published groundbreaking research that is as personal as it gets. The study gives scientists new insight into why a specific class of antibiotics causes deafness - the same class of antibiotics that caused Steyger's deafness as a child in England 48 years ago. The study was published this month in Scientific Reports, part of the Nature Publishing Group.

2 Dec 2011

Researchers create bone-like material and structure for orthopedic procedures

It looks like bone. It feels like bone. For the most part, it acts like bone. And it came off an inkjet printer. Washington State University researchers have used a 3D printer to create a bone-like material and structure that can be used in orthopedic procedures, dental work, and to deliver medicine for treating osteoporosis. Paired with actual bone, it acts as a scaffold for new bone to grow on and ultimately dissolves with no apparent ill effects.

30 Nov 2011

Scientists regenerate functional muscle tissue in mice

A team of scientists from Worcester Polytechnic Institute (WPI) and CellThera, a private company located in WPI's Life Sciences and Bioengineering Center, have regenerated functional muscle tissue in mice, opening the door for a new clinical therapy to treat people who suffer major muscle trauma.

30 Nov 2011

Peninsula Foundation secures funding for PCOS and diabetes research

The Peninsula Foundation, the charitable arm of the Peninsula College of Medicine and Dentistry, has secured funding of -15,000 from The Duchy Health Charity for research into Polycystic Ovary Syndrome (PCOS) and diabetes. The research led, by Professor Jonathan Pinkney at the Knowledge Spa campus in Truro, will be the first non commercial medical research to be carried out at the site.

29 Nov 2011

Study evaluates safety and effectiveness of Diamondback device for heart attacks

Drilling through concrete to create an opening may sound more like construction than medicine, but the approach is similar to what researchers at Orlando Regional Medical Center (ORMC) are doing in a clinical trial to evaluate a device that breaks through hardened coronary arteries, in an effort to prevent heart attacks and relieve chest pain.

23 Nov 2011

Study reveals specific functional deficit in inner ear mechanotransduction channels

National Institutes of Health-funded researchers have identified two proteins that may be the key components of the long-sought after mechanotransduction channel in the inner ear-the place where the mechanical stimulation of sound waves is transformed into electrical signals that the brain recognizes as sound.

22 Nov 2011

Gene-therapy trial to restore hearing in deaf mice

Researchers have found long-sought genes in the sensory hair cells of the inner ear that, when mutated, prevent sound waves from being converted to electric signals - a fundamental first step in hearing. The team, co-led by Jeffrey Holt, PhD, in the department of otolaryngology at Children-s Hospital Boston, and Andrew Griffith, MD, PhD, of the NIH-s National Institute on Deafness and other Communication Disorders (NIDCD), then restored these electrical signals in the sensory cells of deaf mice by introducing normal genes.

22 Nov 2011

Researchers use baker's yeast to gain insight into chromosome separation process

Researchers at the Stowers Institute for Medical Research used, ironically enough, the single-celled organism Saccharomyces cerevisiae -- commonly known as baker's yeast -- to gain new insight into the process by which chromosomes are physically segregated during cell division.

18 Nov 2011