DNA News and Research

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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).

UV light therapy is as beneficial for darker skin as lighter skin

An analysis of more than 100 patients has confirmed for the first time that darker-skinned patients benefit as those with lighter skin when given light therapy for morphea and related diseases, UT Southwestern Medical Center researchers show.

8 Jul 2008

Japanese encephalitis damages the brain in two ways

Japanese encephalitis (JE), commonly known as brain fever, is one of the prevalent mosquito-borne encephalitis in India and entire South East (SE) Asia.

8 Jul 2008

Compound in red wine may prevent breast cancer

Red wine, or rather the natural compound resveratrol found in the red grapes used to make the wine, is in the news again for all the right reasons.

8 Jul 2008

New method to evaluate variations identified in breast cancer susceptibility genes

Using mouse embryonic stem cells, researchers at the National Cancer Institute (NCI), part of the National Institutes of Health, have developed a new method to evaluate which mutations, or changes, in a gene known to increase breast cancer susceptibility, may lead to cancer. The new test, called a functional assay, is more comprehensive and reliable than most current methods.

7 Jul 2008

After 35 reproductive clock ticks for men too

A new study by researchers in France has revealed that after the age of 35 men too experience a loss of fertility.

7 Jul 2008

Pregnancy rates decrease and miscarriages increase when a father is over 35

Pregnancy rates decrease and miscarriages increase when a father is over 35 years of age, a scientist will tell the 24th annual conference of the European Society of Human Reproduction and Embryology (Monday 7 July). Dr. Stephanie Belloc, of the Eylau Centre for Assisted Reproduction, Paris, France, will say that this is the first time that such a strong paternal effect on reproductive outcomes has been shown.

6 Jul 2008

RNAs emerge as major players in gene regulation

Tiny strands of genetic material called RNA - a chemical cousin of DNA - are emerging as major players in gene regulation, the process inside cells that drives all biology and that scientists seek to control in order to fight disease.

6 Jul 2008

New computational tool to study complex clusters of genes

Two Texas A&M University researchers have developed a computational tool that will help scientists more accurately study complex units of clustered genes, called operons, in bacteria.

3 Jul 2008

Genetic link between Crohn's and asthma discovered

Research into the genetic causes of Crohn's disease has revealed that the gene ORMDL3, known to be a risk factor for childhood asthma, is also associated with Crohn's disease, and in the process links between the condition and other diseases have been found.

2 Jul 2008

Potential new way to vaccinate against avian flu

Researchers at the University of Pennsylvania School of Medicine have identified a potential new way to vaccinate against avian flu. By delivering vaccine via DNA constructed to build antigens against flu, along with a minute electric pulse, researchers have immunized experimental animals against various strains of the virus.

1 Jul 2008

UVB does more damage to DNA than UVA

As bombs burst in air this July 4, chances are that sunburn will be the red glare that most folks see - and feel. But unfortunately, even when there is no burn, the effects of the sun's ultraviolet (UV) rays can have deadly consequences.

1 Jul 2008

Disease-detecting lab-on-a-chip

Detecting food-borne diseases such as campylobacter and salmonella long before they enter the food chain would help ensure that the dinner on your table is safe to eat.

1 Jul 2008

New technique produces genetically identical stem cells

Adult cells of mice created from genetically reprogrammed cells-so-called induced pluripotent stem (IPS) stem cells-can be triggered via drug to enter an embryonic-stem-cell-like state, without the need for further genetic alteration.

1 Jul 2008

Cancer cells revert to normal at specific signal threshold

Cancer starts when key cellular signals run amok, driving uncontrolled cell growth. But scientists at the Stanford University School of Medicine report that lowering levels of one cancer signal under a specific threshold reverses this process in mice, returning tumor cells to their normal, healthy state. The finding could help target cancer chemotherapy to tumors while minimizing side effects for the body's healthy cells.

1 Jul 2008

New test quickly detects multi drug-resistant tuberculosis

Researchers have developed a new test which can quickly detect multi drug-resistant tuberculosis (MDR-TB).

1 Jul 2008

Electrostatic-based RNA assays technique could revolutionize medical diagnostics

The dream of personalized medicine - in which diagnostics, risk predictions and treatment decisions are based on a patient's genetic profile - may be on the verge of being expanded beyond the wealthiest of nations with state-of-the-art clinics.

30 Jun 2008

Zinc finger technology brings personalized HIV therapy a step closer

Researchers at the University of Pennsylvania School of Medicine and collaborators are using minute, naturally occurring proteins called zinc fingers to engineer T cells to one day treat AIDS in humans.

30 Jun 2008

New rapid tests for drug-resistant TB for developing countries

People in low-resource countries who are ill with multidrug-resistant TB (MDR-TB) will get a faster diagnosis -- in two days, not the standard two to three months -- and appropriate treatment thanks to two new initiatives unveiled today by WHO, the Stop TB Partnership, UNITAID and the Foundation for Innovative New Diagnostics (FIND).

30 Jun 2008

A global DNA barcode database

The idea of barcoding is familiar to many: in almost every supermarket the checkout operator shows the ticket labelled with a series of black bars to a laser scanner which responds with a beep; a computer analyses the code, identifies the product and the price is sent to the till.

30 Jun 2008

Protein Ronin shown to be an alternate control for embryonic stem cells

Like the masterless samurai for whom it is named, the protein Ronin chooses an independent path, maintaining embryonic stem cells in their undifferentiated state and playing essential roles in genesis of embryos and their development, said Baylor College of Medicine researchers who reported on this novel cellular regulator in the current issue of the journal Cell.

27 Jun 2008