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DNA, or deoxyribonucleic acid, is the hereditary material in humans and almost all other organisms. Nearly every cell in a person’s body has the same DNA. Most DNA is located in the cell nucleus (where it is called nuclear DNA), but a small amount of DNA can also be found in the mitochondria (where it is called mitochondrial DNA or mtDNA).

New simple and cost-effective method of diagnosing hereditary genetic disorders

A technique called size-fractionation performed on a sample of the mother's blood allows researchers to identify fetal DNA molecules separate from maternal DNA as a way to determine which pregnancies may be at risk for genetic disorders, according to a preliminary communication in the February 16 issue of JAMA, a theme issue on medical applications of biotechnology.

15 Feb 2005

The link between intelligence and dementia

Scientists have turned to the brightest brains in Britain in a bid to understand the link between intelligence and dementia.

15 Feb 2005

Genetically engineered potatoes offer new hope in the fight against the Hepatitis B

Genetically engineered potatoes offer new hope in the fight against the Hepatitis B Virus (HBV), an acute sometimes fatal form of viral hepatitis caused by a DNA virus that persists in the blood serum and is transmitted by sexual contact or by transfusion or by ingestion of contaminated blood or other bodily fluids.

14 Feb 2005

Why estrogenic hormones produce unintended results in women

New research is shedding light on why estrogenic hormones produce unintended results in women, giving hope to the idea that new drugs might reach their targets and work more effectively. Ultimately it could mean that postmenopausal women would know that hormone-replacement therapy would have only its intended result.

13 Feb 2005

Artemisinin could selectively kill cancer cells while leaving normal cells unharmed

Researchers at the University of Washington have blended the past with the present in the fight against cancer, synthesizing a promising new compound from an ancient Chinese remedy that uses cancer cells' rapacious appetite for iron to make them a target.

9 Feb 2005

Patients with cancer have a 7-fold increased risk for blood clots in the legs or lungs

Studies that identify patients at highest risk of thrombosis are scarce, according to background information in the article. It is unclear what risks are for various types and stages of cancer.

9 Feb 2005

PAHO vaccines books wins major award

The Pan American Health Organization’s publication, Vaccines: Preventing Disease and Protecting Health, has won an award from the Association of American Publishers in the medical science category.

9 Feb 2005

Abandoned bones suggest TB wiped out leprosy in battle of killer diseases

The spread of tuberculosis may have killed off leprosy in Europe in the Middle Ages, according to research published in the latest issue of the Royal Society Proceedings B.

8 Feb 2005

Level of immune cell DNA in the blood might help predict success of stem cell transplantation

Measuring the quantity of a certain type of immune cell DNA in the blood could help physicians predict whether a bone marrow stem cell transplant will successfully restore a population of infection-fighting cells called T lymphocytes in a child.

7 Feb 2005

Finding points towards the possibility of retrovirus involvement in ALS (amyotrophic lateral sclerosis)

A significant proportion of patients suffering from ALS (amyotrophic lateral sclerosis), also known as Lou Gehrig's disease or motor neuron disease, have a marker of retrovirus activity in their blood, reports the February 8 issue of the medical journal Neurology.

7 Feb 2005

Gene therapy for heart patients with chest pains who do not benefit from other treatments

Individuals with moderate to severe chest pains (angina) who have not found relief from medication may benefit from a new gene therapy approach being used by cardiologists at Rush University Medical Center to grow new blood vessels in the heart.

3 Feb 2005

Gene used in brain development can cause childhood brain cancers

A gene that's normally silenced after contributing to brain development was found to be expressed in cells from medulloblastoma, the most common form of pediatric brain malignancy in children, scientists report in an article published in the February 1 issue of the journal Cancer Research.

3 Feb 2005

Important and previously unrecognized trigger for breast cancer

A small sequence of DNA in the envelope (Env) protein of a mouse breast tumor virus (called MMTV) can transform breast cells into cancer cells, according to a study by Katz et al. in the February 7 issue of The Journal of Experimental Medicine.

31 Jan 2005

Do genes play a role in determining whether a man is gay or heterosexual?

In the first-ever study combing the entire human genome for genetic determinants of male sexual orientation, a University of Illinois at Chicago researcher has identified several areas that appear to influence whether a man is heterosexual or gay.

31 Jan 2005

Viagra protects cardiomyocytes against cell death

Virginia Commonwealth University researchers have shown that a widely used drug for treating erectile dysfunction, Viagra, reduces the death of heart cells under heart attack-like conditions in a laboratory model.

31 Jan 2005

No association between a herpesvirus infection and pulmonary hypertension

Contrary to the results of a recent U.S. study, investigators in Japan found no association between a herpesvirus infection and a potentially life-threatening form of high blood pressure, as reported in the March 1 issue of The Journal of Infectious Diseases, now available online.

30 Jan 2005

Physical traits, genetic test help with early diagnosis of aneurysm syndrome

A research team led by Johns Hopkins doctors has defined the physical traits and genetic basis of a new aortic aneurysm syndrome that is extremely aggressive and can cause death in early childhood. Early diagnosis of the syndrome and rapid surgical repair of the swollen aorta can save lives, the researchers report in the Jan. 30 advance online section of Nature Genetics.

30 Jan 2005

Startling results from new biomedical research will smooth path to the market place

Researchers have discovered how to convert liver cells of mice into pancreatic cells using a single injection. This may eventually lead to a cure for diabetes. Dr. James Mittra, one of the organisers of an international conference in Edinburgh on the Evolution of the Life Science Industries asks, “How does the pharmaceutical industry respond to this kind of work? They are primarily interested in treatments, not cures. Do they see this kind of research as a threat?”

27 Jan 2005

Biochip for detection of inflammatory bowel disease

At the III International Symposium on Advanced Therapy for Chronic Inflammatory Bowel Disease, held in Madrid, the biotechnological company, Progenika, presented a DNA-chip the purpose of which is the optimisation of the diagnosis, prognosis and treatment of patients with inflammatory bowel disease (Crohn’s disease and Ulcerous Colitis).

26 Jan 2005

Novel nanotechnology detects human DNA mutations

Researchers at Nanosphere, Inc. have reported unprecedented benefits in the company's technology for the medical analysis of human DNA.

26 Jan 2005

DNA News and Research

Further Reading

New simple and cost-effective method of diagnosing hereditary genetic disorders

The link between intelligence and dementia

Genetically engineered potatoes offer new hope in the fight against the Hepatitis B

Why estrogenic hormones produce unintended results in women

Artemisinin could selectively kill cancer cells while leaving normal cells unharmed

Patients with cancer have a 7-fold increased risk for blood clots in the legs or lungs

PAHO vaccines books wins major award

Abandoned bones suggest TB wiped out leprosy in battle of killer diseases

Level of immune cell DNA in the blood might help predict success of stem cell transplantation

Finding points towards the possibility of retrovirus involvement in ALS (amyotrophic lateral sclerosis)

Gene therapy for heart patients with chest pains who do not benefit from other treatments

Gene used in brain development can cause childhood brain cancers

Important and previously unrecognized trigger for breast cancer

Do genes play a role in determining whether a man is gay or heterosexual?

Viagra protects cardiomyocytes against cell death

No association between a herpesvirus infection and pulmonary hypertension

Physical traits, genetic test help with early diagnosis of aneurysm syndrome

Startling results from new biomedical research will smooth path to the market place

Biochip for detection of inflammatory bowel disease

Novel nanotechnology detects human DNA mutations

Exploring the intersection of biology and proteomics

Unlocking the Secrets of Multiple Sclerosis Progression: Brain-Immune Cell Communication

Passing on Polycystic Ovary Syndrome: Health risks for male offspring of women with PCOS

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