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.

Research shows preventive effects of cannabinoids on Alzheimer's disease

New research shows that a synthetic analogue of the active component of marijuana may reduce the inflammation and prevent the mental decline associated with Alzheimer's disease.

22 Feb 2005

Researchers have identified a protein called HIF-2a, which is important in retina formation

Hoping to prevent blindness in premature babies, UT Southwestern Medical Center researchers have identified a protein that responds to oxygen levels in cells and tissues and also affects the developing eye.

22 Feb 2005

Diagnosis of prions in patients should utilize novel strategy, conformation-dependent immunoassay

A technique for detecting prions in tissue, developed in recent years by UCSF scientists, is significantly more sensitive than the diagnostic procedures currently used to detect the lethal particles in samples of brain tissue from patients, according to a study performed by a UCSF team.

22 Feb 2005

First comprehensive examination of strenuous physical activity and the risk of developing Parkinson's disease

In the first comprehensive examination of strenuous physical activity and the risk of developing Parkinson's disease, researchers from the Harvard School of Public Health (HSPH) have found that men who exercised regularly and vigorously early in their adult life had a lower risk for developing Parkinson's disease compared to men who did not.

22 Feb 2005

Obstructive sleep apnea syndrome in snorers

An overnight sleep test is required to distinguish ordinary snorers from persons with obstructive sleep apnea syndrome (OSAS), according to a study in the current issue of Archives of Otolaryngology - Head & Neck Surgery.

21 Feb 2005

Prozac, Xenical and Meridia may help type 2 diabetes patients lose weight

Three commonly used drugs - Prozac, Xenical and Meridia - may help type 2 diabetes patients lose small amounts of weight, although long-term benefits are not clear, a new review of 22 studies suggests.

20 Feb 2005

Naltrexone helps alcoholics moderate their drinking

A little-known drug called naltrexone provides a “meaningful benefit” in helping alcoholics moderate their drinking, according to the latest review of evidence from 29 studies on four continents.

20 Feb 2005

Cannabis use may increase risk of stroke

Regular users of cannabis could be putting themselves at risk of stroke, while they are still young, indicates a case report, published in the Journal of Neurology Neurosurgery and Psychiatry.

20 Feb 2005

Boys who were taller between birth and 1 year earned more than their shorter peers later in life

Slow growth in the year after birth seems to signal poor economic prospects as an adult, suggests a study of 50 year old men in Archives of Disease in Childhood.

20 Feb 2005

As little as one drink per week may harm your baby

Expectant mothers should be advised not to drink alcohol, as this may pose health risks to the foetus, argues an editorial in this week's BMJ.

20 Feb 2005

Quetiapine speeds up rate of decline in Alzheimers

Quetiapine, a drug commonly used in nursing homes to treat agitation and related symptoms in people with Alzheimers' disease actually worsens patients' illness, speeding up their rate of decline significantly, says a paper published on bmj.com.

20 Feb 2005

Link between muscle movement and breathing rhythms may shed new light on SIDS and sleep apnea

Between 2,000 and 3,000 infant deaths each year are attributed to Sudden Infant Death Syndrome (SIDS), according to the American Academy of Pediatrics. In addition, approximately 12 million Americans suffer from sleep apnea, a respiratory ailment that can lead to death in some cases.

17 Feb 2005

When does occasional absentmindedness signal the start of memory decline?

Forgetfulness is something everyone experiences at one time or another, but at what point does it indicate the beginning of a serious memory loss?

17 Feb 2005

"Frank is Dead" in 9-year-old cancer patient

Much to the relief of well-wishers across the globe, internationally renowned skull base surgeon Hrayr Shahinian, M.D., of the Skull Base Institute in Los Angeles, has announced that "Frank is Dead."

16 Feb 2005

Young blood revives aging muscles

Any older person can attest that aging muscles don't heal like young ones. But it turns out that's not the muscle's fault. A study in the Feb. 17 issue of Nature shows that it's old blood that keeps the muscles down.

16 Feb 2005

Changing chemistry helps explain estrogen threat to the heart

A piece of the topical puzzle of how estrogen goes from protecting women from heart disease to apparently increasing their risk later in life may have been found.

16 Feb 2005

Schizophrenia may arise from a single genetic defect

Researchers have long puzzled over the apparently multiple causes of complex developmental disorders such as schizophrenia. Individuals seem to be predisposed to the disease by a tragic, mysterious combination of genetics, prenatal trauma, viral infection, and early experience.

16 Feb 2005

Research shows that individual NAc neurons play a role in Pavlovian learning

While the brain center called the nucleus accumbens (NAc) has been called a key component of the brain's "reward" pathways, researchers' experiments with rats have now shown that the center processes not only rewarding stimuli, but also aversive stimuli.

16 Feb 2005

New findings challenge one of the established views of how nerve cells communicate with one another

Every time we move, feel emotions, think or remember, the nerve cells, or neurons, in our body transmit messages to one another via chemical signals called neurotransmitters. Within neurons are tiny organelles called synaptic vesicles that sequester neurotransmitters and release them when needed into the synapse, or space between nerve cells, where the chemical signal is transmitted to other neurons.

16 Feb 2005

Achieva 3T MR Scanner launched officially launched

The first 'next generation' MRI (magnetic resonance imaging) body scanner in the world will be officially launched at Hope Hospital later this week (Friday 18th February).

15 Feb 2005