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Oxidants are responsible for sex in algae

Colonies of the multicellular green alga Volvox carteri exposed to temperatures of 111 degrees Fahrenheit (42.5 degrees Celsius) had twice the amount of free radicals, oxidants that can damage biological structures, as unheated colonies. High levels of oxidants within their cells activated the algae's sex-inducer gene, the researchers report.

11 Jun 2004

Body fat not always bad

With the threat of an obesity crisis looming, a study led by UCL researchers reveals today that fat tissue isn’t always the enemy. Reporting in the journal Science they show that a molecular signalling pathway in fat tissue is an important mediator in extending lifespan.

11 Jun 2004

Pathogens have the ability to cause late-onset sporadic Alzheimer's disease

The possibility of an infectious etiology of chronic diseases, including Alzheimer’s disease, has long been debated and is difficult to prove.

11 Jun 2004

Docetaxel decreases the chance of dying by 24 percent in advanced-stage prostate cancer patients resistant to hormone therapy

Johns Hopkins Kimmel Cancer Center clinicians were among those at leading institutions that have completed a three-year international study showing that docetaxel, a drug made from yew tree needles, decreases the chance of dying by 24 percent in advanced-stage prostate cancer patients resistant to hormone therapy.

11 Jun 2004

Postnatal exposure to a mercury preservative commonly used in a number of childhood vaccines can lead to the development of autism-like damage

A new study published online June 8 in the Nature publication, Molecular Psychiatry, indicates that postnatal exposure to thimerosal, a mercury preservative commonly used in a number of childhood vaccines, can lead to the development of autism-like damage in autoimmune disease susceptible mice

11 Jun 2004

Genetic signature associated with the aging human brain

Unraveling the mysteries of the aging brain is a major goal for brain science, especially given the exploding population of senior citizens and the obvious desire to preserve brain function as long as possible.

9 Jun 2004

Genetic link between hormones and migraine

Director of the Genomics Research Centre Professor Lyn Griffiths and her team of researchers at Griffith University have identified a genetic link between hormones and migraine.

9 Jun 2004

New statistical techniques for cancer diagnosis

CSIRO statisticians have developed a new way to subtype paediatric Acute Lymphoblastic Leukaemia (ALL), the most common form of cancer in children under 12.

9 Jun 2004

Chemotherapy regimen more effective and more toxic in Japanese patients than in American patients

A chemotherapy regimen commonly used to treat non-small cell lung cancer is both more effective and more toxic in Japanese patients than in American patients, researchers reported Saturday at the annual meeting of the American Society of Clinical Oncologists.

7 Jun 2004

Crucial discovery may help better diagnose and treat children with Hirschsprung disease

Researchers at Fox Chase Cancer Center have made a crucial discovery that may help physicians better diagnose and treat children with Hirschsprung disease, a debilitating and sometimes life-threatening ailment that causes bowel obstruction and involves an array of genetic changes.

5 Jun 2004

High school student makes significant contribution to breast cancer research

A high school student from Albany, New York, has made a significant contribution toward understanding how mutations to a gene called BRCA-1 contributes to hereditary breast cancer.

5 Jun 2004

Neuroscientists have overcome a major obstacle in gene therapy research

Northwestern University neuroscientists have overcome a major obstacle in gene therapy research. They've devised a method that will safely deliver and regulate expression of therapeutic genes introduced into the central nervous system to treat Parkinson's disease and other neurodegenerative diseases.

5 Jun 2004

Cure for age-induced diabetes or cancer may be nearer than we think

Forget the drastic reduction in carbs and calories called for by diet dictators. The day when people can eat their favorite foods, stay thin and live to be 120 without getting age-induced diabetes or cancer may be nearer than we think.

5 Jun 2004

Parkinson's disease breakthrough

Brandeis scientists have made groundbreaking advances in understanding how the regulations of a novel gene during the cell cycle can lead to a rare familial case of the early onset of Parkinson's disease.

5 Jun 2004

Breakthrough in gene therapy

Despite a roller-coaster ride of ups and downs during the past 15 years, gene therapy has continued to attract many of the world's brightest scientists. They are tantalized by the enormous potential that replacing missing genes or disabling defective ones offers for curing diseases of many kinds.

3 Jun 2004

Fibroid tumors lack crucial structural protein

Fibroid tumors-the sometimes painful uterine growths affecting many American women-lack a key protein that plays a role in holding tissues together, according to a study by researchers from the Uniformed Services University of the Health Sciences (USUHS) and the National Institute of Child Health and Human Development of the National Institutes of Health

3 Jun 2004

Positive benefits of sun exposure

There is no getting around the fact that sunlight is hard on your skin. But what about the positive benefits of sun exposure? The June Harvard Health Letter discusses the good and the bad of the sun.

2 Jun 2004

Fibroid tumors affecting many American women lack a key protein helps hold tissues together

Fibroid tumors — the sometimes painful uterine growths affecting many American women — lack a key protein that plays a role in holding tissues together, according to a study by researchers from the Uniformed Services University of the Health Sciences (USUHS) and the National Institute of Child Health and Human Development of the National Institutes of Health.

2 Jun 2004

Study may help oncologists tailor chemotherapy to patients based on their genetic make-up

Genetic variations in an individual’s ability to repair DNA damage may help predict survival in lung cancer patients treated with the common chemotherapy drugs cisplatin or carboplatin, a new study shows.

2 Jun 2004

Genes that allow nerve cells to communicate may have come from bacteria eons ago

Some of the genes that allow nerve cells and some other types of cells to send elaborate chemical messages to each other appear to have been transferred to animals or their immediate ancestors from bacteria eons ago.

2 Jun 2004