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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 dimension to understanding of p53 protein

The p53 protein routinely shuts down damaged cells and is one of our main lines of defence against cancer. Scientists at Karolinska Institutet in Sweden now present new findings on how p53 carries out this all-important function.

21 Mar 2007

Gene and a region of a chromosome identified that may lead to autism in children

Yale School of Medicine autism experts Fred Volkmar, M.D. and Ami Klin are part of a global research consortium from 19 countries to identify a gene and a region of a chromosome that may lead to autism in children.

13 Mar 2007

Aging boosts chances that a family line will be long-lived

Scientists have puzzled over just why organisms evolved aging as a strategy, and now there appears to be an answer. Allowing one individual to carry all the cellular damage inflicted over time, rather than dividing it between two organisms during reproduction, increases the chances that the individual's line will continue to reproduce for many generations to come, a new study indicates.

13 Mar 2007

Novel pathway for antibiotic-induced cell death

Scientists have identified unforeseen mechanisms by which quinolones - a family of broad-spectrum antibiotics among the most widely prescribed - induce bacterial cell death.

13 Mar 2007

Study aims to find which breast cancer patients need chemotherapy

Most postmenopausal women with small breast tumors don't need chemotherapy to reduce their recurrence risk after lumpectomy.

13 Mar 2007

Antifungal drug kills tuberculosis bug

Scientists hoping to find new treatments for one of the world's most deadly infectious diseases say drugs used to treat common fungal infections may provide the answer.

From The University of Manchester 12 Mar 2007

The need for a bronzed glow could be in the genes

Researchers have found that a gene which helps to control tumours also triggers the chemical chain reaction that makes the skin tan when exposed to ultraviolet (UV) light.

12 Mar 2007

Throw out peanut butter from 2004!

According to the U.S. Centers for Disease Control and Prevention (CDC), as of March 7, 2007, 425 people in 44 states have now been infected with the strain of Salmonella Tennessee found in Peter Pan and Great Value peanut butter products.

12 Mar 2007

European patent on stem cells may be a possibility

As long as the research meets the usual requirements for a patent, isolated embryonic stem cells should be considered for both method and product patents.

11 Mar 2007

New discovery suggests novel methods for treating acute lymphoblastic leukemia

Investigators at St. Jude Children's Research Hospital have discovered previously unsuspected mutations that contribute to the formation of pediatric acute lymphoblastic leukemia (ALL), the most common cancer in children.

8 Mar 2007

Two Roche HPV diagnostic tests to receive FDA review

Roche on Tuesday announced that FDA will review applications for the company's two human papillomavirus diagnostic tests, the Baltimore Sun reports

8 Mar 2007

FDA accepts two Roche diagnostics HPV tests for review

Roche has announced today that the United States (U.S.) Food & Drug Administration has accepted for review its applications for two human papillomavirus (HPV) tests.

From Roche Sequencing and Life Science 6 Mar 2007

Two experimental drugs aimed at controlling viral loads among HIV-positive people who have developed drug resistance show promise

Two experimental antiretroviral drugs, called TMC278 and elvitegravir, show promise in controlling the viral loads of HIV-positive people who have developed resistance to available drugs, researchers said Wednesday at the 14th Annual Conference on Retroviruses and Opportunistic Infections in Los Angeles, the Los Angeles Times reports.

4 Mar 2007

90 year old corpse may hold the answer to bird flu

Scientists in Britain believe a 90 year old corpse may hold the answer to the fight against bird flu.

28 Feb 2007

Aspirin offers help for Barrett's esophagus

Researchers at Fred Hutchinson Cancer Research Center have found that people with the most-aggressive form of Barrett's esophagus, a precancerous condition that can lead to esophageal cancer, may benefit the most from preventive therapy with aspirin, ibuprofen and other nonsteroidal anti-inflammatory drugs, or NSAIDs.

27 Feb 2007

DNA 'cages' to deliver drugs

By combining DNA macromolecules with polymers containing iron, molecular 'cages' can be made: porous structures capable of carrying and delivering drugs or DNA-fragments.

26 Feb 2007

Statements on peanut butter Salmonella

Statement from FDA - Product testing by several states has now confirmed that Peter Pan peanut butter and certain Great Value brand peanut butter are the sources of the foodborne illness outbreak of Salmonella Tennessee that began in August 2006. To date 329 individuals have become ill from consuming the contaminated peanut butter, and 51 of those persons were hospitalized.

25 Feb 2007

Irregular heartbeat linked to genetic mutation

Every day for 10 years, a seemingly heart-healthy 53-year-old woman experienced rapid and irregular heartbeats. She had no personal or family history of hypertension or hyperthyroidism. She did not suffer from myocardial or coronary artery disease, or any abnormalities of the heart as best doctors and medical science could determine.

25 Feb 2007

microRNA directly regulates a gene implicated in human cancers

MicroRNAs are tiny snippets of RNA that can repress activity of a gene by targeting the gene's messenger RNA (which copies DNA information and starts the process of protein production).

22 Feb 2007

microRNAs undergo molecular editing with significant physiological consequences

Tiny molecules called microRNAs, only 19 to 21 nucleotides in length, are able to effectively silence sometimes large sets of genes. They do this by specifically binding to and neutralizing another form of RNA called messenger RNA, responsible for conveying the information from genes to the cellular machinery that uses that information to create proteins, the building blocks of the body.

22 Feb 2007