Brain News and Research

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The human brain is the center of the human nervous system and is a highly complex organ. Enclosed in the cranium, it has the same general structure as the brains of other mammals, but is over three times as large as the brain of a typical mammal with an equivalent body size.

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

Breast cancer chemotherapy regimen associated with life-threatening complications

The chemotherapy regimen of doxorubicin plus docetaxel, used to treat breast cancer in a clinical trial, was associated with an increased risk of serious complications, resulting in the premature termination of the trial, according to a study in the May 18 issue of JAMA.

17 May 2005

Mathematical way to identify babies at risk for epilepsy

Confusion and speech problems are frequent signs of seizures, but babies offer few such clues as to what ails them.

17 May 2005

Women are particularly vulnerable to the harmful effects of excessive drinking

A brain-scan study in Germany has found evidence that women are particularly vulnerable to the harmful effects of excessive drinking.

17 May 2005

Vaccine may prevent cigarette addiction

Clinical trials on a new vaccine against smoking has given hope to those trying to quit. The vaccine could also prevent cigarette addiction.

17 May 2005

The brain damage wrought by a minor stroke can alter the way artists paint

The study reports on two professional painters, both of whom had a stroke, located in the left occipital lobe of the brain and limbic thalamus, respectively.

17 May 2005

Using a mobile phone in rural areas seems to pose a greater risk of developing brain tumours than it does in urban areas

The findings are based on a sample of over 1400 adults aged between 20 and 80, living in the centre of Sweden. All of them had been diagnosed with a malignant or benign brain tumour between January 1997 and June 2000.

17 May 2005

Whole-body MRI takes less than twenty minutes to accurately scan a patient’s entire body for cancer spread to the bone

Whole-body MRI with an automatic moving table is effective for evaluating the entire skeleton in patients with suspected bone metastasis (cancer that has spread to the bone from other parts of the body) in a single imaging scan-and it only takes between 15 and 18 minutes, say two different European studies.

17 May 2005

Multi-tasking skills develops late in adolescence

Parents of teenagers frustrated by their children's inability to focus on more than one thing at a time can take hope: a new study from researchers at the University of Minnesota in Minneapolis finds behavioral evidence that the part of the brain responsible for the ability to multi-task continues to develop until late adolescence.

17 May 2005

Antibody combined with cancer drug shows promise against breast tumors

An antibody that targets the blood vessels nourishing tumors significantly reduced breast cancer formation and growth in mice when combined with a current cancer drug, according to researchers at UT Southwestern Medical Center.

16 May 2005

Valium puts humans and amoeba to sleep

Biologists at University of California, San Diego (UCSD) have discovered that the popular sedative Valium has similar effects on the social amoeba Dictyostelium discoideum as it does in humans. Their surprising finding that Valium, as well as a "natural Valium" molecule found in human brains, causes the social amoeba to enter a dormant or "sleep" phase, may provide new insights into how cells in higher organisms, including humans, communicate with each other.

16 May 2005

Association between maternal exposure to toxoplasmosis and increased risk for developing schizophrenia

Toxoplasmosis is a parasitic infection that can develop from eating undercooked meat and unwashed fruits and vegetables, drinking contaminated water, or not washing one's hands after gardening or changing cat litter boxes. Researchers found a potential link between high maternal toxoplasmosis gondii antibody titers and development of schizophrenia spectrum disorders in the adult offspring.

16 May 2005

Acne drug not linked to increased suicide risk

A recent study has found that the popular acne-fighting drug Accutane, which has been linked to birth defects, did not cause depression in a group of adolescents.

16 May 2005

Experts redefine hypertension

Leading US hypertension experts unveiled a new definition of hypertension at the American Society of Hypertension Inc. (ASH) Twentieth Annual Scientific Meeting.

16 May 2005

Changes in certain brain receptors can affect seizures and anxiety during the menstrual cycle

A new UCLA study shows that changes in certain brain receptors can affect seizures and anxiety during the menstrual cycle--findings that could lead to novel therapies for premenstrual dysphoric disorder (PMDD, formerly known as PMS) and other central nervous system symptoms associated with the menstrual cycle.

16 May 2005

Women more vulnerable to chronic drinking than men are

A study in the May issue of Alcoholism: Clinical & Experimental Research addresses this gap in research, using computed tomography (CT) to examine brain atrophy in the brains of alcoholic men and women. The findings support and build upon a prior hypothesis that women develop alcohol-related brain damage more readily than men.

16 May 2005

Vaccine candidate to treat nicotine addiction shows promise

Cytos Biotechnology AG has announced that its vaccine candidate CYT002-NicQb to treat nicotine addiction has achieved proof of efficacy.

16 May 2005

Brains of one species of mouse actually shrink during the winter

The brains of one species of mouse actually shrink during the winter, causing the mice to have more difficulty with some types of learning, a new study found.

15 May 2005

Alcohol consumption increases movement of S. pneumoniae toward the lungs

Streptococcus pneumoniae is a bacterium that can infect the upper respiratory tract and cause pneumonia, as well as infections in other parts of the body such as the bloodstream (bacteremia), lining of the brain and spinal cord (meningitis), bones (osteomyelitis), joints (arthritis), ears (otitis media) and sinuses (sinusitis).

15 May 2005