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Methamphetamine addiction mechanism discovered

Researchers have identified, for the first time, long-term changes in the brain circuitry of methamphetamine-addicted mice that can explain why the craving of addiction is so stubborn and long-lived.

10 Apr 2008

Manipulating the immune system like a parasite

One day it may be possible to mimic the tactics used by parasites to trick the body into accepting transplanted tissues or organs.

10 Apr 2008

Looping genes may hold a key to understanding breast cancer

Another piece of the puzzle that is breast cancer has been found by University of Queensland researchers.

10 Apr 2008

Researchers identify gene involved in blood stem cell replication, movement

Researchers at the Joslin Diabetes Center have identified a gene that is responsible for the division and movement of marrow-derived, blood-forming stem cells, a finding that could have major implications for the future of bone marrow and blood cell transplantation.

10 Apr 2008

How protein sludge accumulates in Alzheimer's

Researchers have identified a key mechanism by which the protein sludge that kills brain cells accumulates in Alzheimer's disease (AD).

10 Apr 2008

Speed of aging is strongly influenced by genetics

Perhaps the aging process can't be stopped. But it can be predicted, and new research from Tel Aviv University indicates that people may live longer and lead healthier lives as a result.

10 Apr 2008

Variation in CHI3L1 gene increases risk of asthma

A tiny variation in a gene known as CHI3L1 increases susceptibility to asthma, bronchial hyperresponsiveness and decline in lung function, researchers report early online in the New England Journal of Medicine.

10 Apr 2008

Soy appears to protect against development of breast cancer

Evidence is growing from animal and human studies that genistein, a potent chemical found in soy, protects against development of breast cancer - but only if consumed during puberty, says a Georgetown University Medical Center researcher in the British Journal of Cancer published online today.

10 Apr 2008

Better understanding of how T-cell leukemias and other disorders arise

Contrary to the currently accepted model of T-cell development, researchers at the University of Pennsylvania School of Medicine have found that juvenile cells on their way to becoming mature immune cells can develop into either T cells or other blood-cell types versus only being committed to the T-cell path.

10 Apr 2008

Cancer widows are often emotionally isolated

Many Swedish men have no one to turn to for emotional support other than their partners, not even in particularly traumatic situations, such as when suffering from cancer.

10 Apr 2008

Scientists turn normal skin cells into cancer stem cells

With a bit of genetic trickery, researchers at the Stanford University School of Medicine have turned normal skin cells into cancer stem cells, a step that will make these naturally rare cells easier to study.

10 Apr 2008

Attacks against medical researchers

Biological Psychiatry, in its upcoming April 15th issue, is publishing a critically important commentary written by its Editors, members of its Editorial Committee, and its Editorial Board.

10 Apr 2008

Tiny scaffolding inserted into brain could reduce damage caused by strokes

Inserting tiny scaffolding into the brain could dramatically reduce damage caused by strokes the UK National Stem Cell Network Annual Science Meeting will hear today (10 April).

10 Apr 2008

Surgery and drugs not enough to combat obesity

A review of research examining the effectiveness of different obesity treatments has concluded that no matter what other forms of therapy are offered, changes in lifestyle are imperative if patients want to maximise and maintain their weight loss.

10 Apr 2008

Too many gene copies stimulate tumor cell growth

New data, generated by Peter Lichter and colleagues, at the German Cancer Research Center, Heidelberg, have characterized a molecular pathway underlying low-grade forms of a type of brain tumor known as an astrocytoma.

9 Apr 2008

Solving the Z ring's mysteries may lead to new antibiotics

A team led by Johns Hopkins researchers has solved important puzzles concerning how certain proteins guide the reproduction of bacteria, discoveries that could lead to a new type of antibiotics.

9 Apr 2008

Pistachios good for the heart

More good news for pistachio fans! According to new data unveiled this week at the Experimental Biology Conference in San Diego, snacking on pistachios has proved once again to have a positive impact on improving cardiovascular health by significantly reducing inflammation in the body, a prominent cardiovascular disease (CVD) risk factor.

9 Apr 2008

Hepatitis B virus triggers cell 'suicide' in patients with chronic infection

Scientists from UCL (University College London) have identified a key difference between people who can fight the Hepatitis B virus (HBV) off successfully and those who fail to do so - that a group of cells important in controlling the disease are triggered to 'commit suicide' in patients who are chronically infected.

9 Apr 2008