Medical Research News

RSS

Judges perceive child witnesses as being more honest than adults when testifying in court

The multi-disciplinary research, the first of its kind to examine judges' perceptions of child witnesses, was led by Queen's Child and Family Law scholar Nick Bala. It addresses how judges assess the honesty and reliability of children's court testimony, and how accurate their observations are.

20 May 2005

Nurture as important as nature in developing ability for flexible self-control

Your ability to follow the rules of the road when driving on unfamiliar streets exists thanks to the way your pre-teen life experiences influenced the development of your brain. Individuals deprived of normal life experiences may lack this ability to control their behavior in novel situations, a new computer model suggests, providing insight into how nature and nurture may interact in the development of self-control.

20 May 2005

So you thought that smell was cheese!

Researchers in the UK have found that visual words can influence the perception of smells, with pleasant words influencing olfactory brain regions to perceive an odour as pleasant, an interesting idea that might hold particular relevance for restaurateurs and advertisers.

20 May 2005

Researchers find first gene for inherited testicular cancer in mice

In this week's journal Nature, researchers report finding the first gene responsible for inherited susceptibility of testicular cancer in mice. The Ter mutation occurs in a gene called dead end, which is involved in normal testicular development and which may play a role in inherited forms of a testicular cancer occurring in infants.

20 May 2005

Extolling the safety of childhood vaccinations may only serve to strengthen the positions of those philosophically opposed to them

"Changing attitudes about pediatric vaccination can be challenging," says Dr. Kumanan Wilson, professor of medicine and health policy, management and evaluation at U of T, internal medicine physician at Toronto General Hospital, University Health Network, and lead author of the research.

20 May 2005

New MRI techniques may help patients avoid knee surgery

Patients with suspected meniscal tears or other injuries to their knees may be able to avoid arthroscopic surgery by having a 3-Tesla MRI examination instead, two studies together indicate.

20 May 2005

Cetuximab (Erbitux) can battle cancer and prolong life in many patients with advanced colorectal cancer

"Even in people who have gone through six or more previous courses of chemotherapy, cetuximab, may fight the growth of cancer, giving patients additional months of life," says study presenter Heinz-Josef Lenz, M.D., associate professor of medicine at the Keck School of Medicine of the University of Southern California and USC/Norris Comprehensive Cancer Center.

20 May 2005

Basic brain mechanism that causes drug-seeking behavior

In studies with rats, researchers have distinguished a burst of the brain chemical dopamine from a reward-related brain region that is associated with anticipating the delivery of cocaine. The finding, publishing in the May 19 issue of Neuron, reveals the brain signal that likely underlies the fundamental motivation to obtain such drugs, said the scientists.

20 May 2005

Disease progression model of pancreatic cancer developed

Building on previous work, researchers at the University of Pennsylvania School of Medicine have developed an animal model of pancreatic cancer that closely mimics disease progression in humans. From this, they hope to develop new treatments for this deadly disease.

20 May 2005

Bacteria in plaque may increase risk for heart attacks

Researchers have found evidence that the amount of bacteria in subgingival plaques, the deep plaques in periodontal pockets and around the teeth, may contribute to an individual's risk of a heart attack, according to two studies appearing the Journal of Periodontology.

20 May 2005

Narcotic medications can safely and effectively ease severe, chronic pain in older people

Narcotic medications can safely and effectively ease severe, chronic pain in older people with little risk that these patients will seek ever-increasing doses, University of California, San Francisco (UCSF) medical scientists have found. Younger patients, however, are likely to want to rapidly increase their medication dose, the researchers found, posing serious potential health consequences.

20 May 2005

Impact of oral contraceptives not immediately reversible after discontinuation

Hormonal changes induced by oral contraceptives (OC) are not immediately reversible after discontinuation of use, according to new research issued today at the American Association of Clinical Endocrinologists (AACE) Fourteenth Annual Meeting and Clinical Congress.

18 May 2005

Nutritional composition of a mother’s breast milk may depend not just on her diet - but on her genes

“It is well known that genes control the nutrient levels in cow’s milk” said Richard B. Weinberg, M.D. “But until now, no one has considered how genes might affect human breast milk. This is the first study to demonstrate a genetic effect on human lactation.” The results were presented today at Digestive Disease Week 2005 in Chicago, Ill.

18 May 2005

Australia to establish a national clinical trials register

For the first time, medical researchers, doctors and the general public will have information about clinical trials happening across the country in all areas of health, with the announcement of a national on-line register of all types of clinical trials.

18 May 2005

Researchers prevent post-traumatic brain damage using experimental drug

In animal studies, researchers from Georgetown University Medical Center have shown how traumatic brain injury leads to loss of brain function - and found that an experimental drug can stop the damage and promote recovery.

18 May 2005

Radioimmunotherapy streamlines non-Hodgkin's lymphoma treatment

Researchers at the Keck School of Medicine of the University of Southern California and colleagues have found a way to streamline a new form of treatment for patients with non-Hodgkin's lymphoma.

18 May 2005

Nutrition gene key in regulating immune system

A gene that signals a yeast cell to make bread rise and mice to eat a better diet also helps selectively silence the immune system, researchers have found.

18 May 2005

Unrestrained retina too much of a good thing

When primitive nerve cells begin forming an eye in the mouse embryo, they are programmed to build a retina. But the ability to see depends upon connecting the retina to the brain via the optic nerve. Unless these embryonic cells are given the right cue at the right time, they mistakenly form a huge eye that consists entirely of retina and lacks the optic nerve.

18 May 2005

Chronic stress can be harmful - to your health and also to your brain

Chronic stress can be harmful - to your health and also to your brain, according to researchers at the Douglas Hospital Research Center. Their findings, published in a recent issue of Psychoneuroendocrinology, show increased stress hormones lead to memory impairment in the elderly and learning difficulties in young adults.

17 May 2005

Jefferson researcher’s results show promise for metastatic eye melanoma

But now, by simultaneously revving up the immune system and choking off the tumor’s oxygen supply, oncologists at Jefferson Medical College and the Kimmel Cancer Center at Thomas Jefferson University in Philadelphia may have found a better way to battle this deadly cancer.

17 May 2005