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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).

Sequencing of human genetic code promises to usher in a new era of genetic medicine

The ability of molecular biologists to sequence the human genetic code promises to usher in a new era of genetic medicine, but that doesn’t mean science can accurately read personal genetic codes.

16 Nov 2004

Five advanced tests provide answers to couples with unexplained infertility

For couples struggling with infertility, "all routine tests came back negative" are not the words they want to hear. With up to 15% of couples with "unexplained infertility" and another 3% struggling with recurrent pregnancy loss, advanced tests help doctors find answers for their most challenging cases.

16 Nov 2004

The brain's dopamine system is key to alcoholism

Among the many genes that may contribute to an individual's susceptibility to alcoholism, those in the dopamine system are of special interest because addictive substances can activate this system.

14 Nov 2004

Heart bypass gets new source for replacement blood vessels

The search for a stable, renewable source of blood vessels, especially for potential use in heart bypass surgery, has reached a milestone at the State University of New York at Buffalo.

11 Nov 2004

New insight into how our body cells block the development of cancer

Scientists at the Medical Research Council (MRC) Cancer Cell Unit, at the University of Cambridge, have revealed a new insight into how our body cells block the development of cancer.

11 Nov 2004

Research aims to understand how genetic information translates into biological activity

The National Institute of Standards and Technology (NIST) has launched a new $6.25 million, five-year program to explore and address challenges in measurement, validation and quality control for the rapidly growing field of gene expression profiling.

11 Nov 2004

Lorus Therapeutics allowed Canadian patent to protect anticancer drugs

Lorus Therapeutics today announced that its wholly owned subsidiary, GeneSense Technologies Inc., has been allowed a patent by the Canadian Patent Office entitled "Antitumor Antisense Sequences Directed Against R1 and R2 Components of Ribonucleotide Reductase."

10 Nov 2004

Sex genes of infectious fungus closely resemble human Y chromosome

Fungi and animals, including humans, have a lot in common when it comes to the arrangement of genes that determine their sex, according to new work by Howard Hughes Medical Institute geneticists at the Duke University Medical Center.

10 Nov 2004

Stem cell gene linked to a portion of one of the most common childhood brain cancers

Scientists at Johns Hopkins have linked a stem-cell gene to a portion of one of the most common childhood brain cancers, opening the door to tailored therapies that block the gene's tumor-promoting ability.

10 Nov 2004

Researchers have developed a new algorithm that can lead to more accurate detection of cancer genes

Researchers at New York University's Courant Institute of Mathematical Sciences have developed a new algorithm that can lead to more accurate detection of cancer genes than previous versions.

8 Nov 2004

Stone tools of Indonesian "hobbit" studied

A Southern Cross University researcher has begun the painstaking task of analysing hundreds of stone tools believed to have been used by the “hobbits” – a new species of miniature humans found on the Indonesian island of Flores.

8 Nov 2004

Researchers attempt to quantify processes underlying cell heterogeneity

Combining the latest methods in gene splicing and computer modeling, Rice University researchers are trying to develop a predictive framework for one of the most basic and complex biological phenomena — cellular heterogeneity, or the ability of genetic clones to act and behave differently when exposed to the same set of environmental stimuli.

8 Nov 2004

Search for genetic key to corneal disease

A new federal grant focusing on painful inherited visual disorders that scar the cornea will allow researchers to narrow the genetic cause of one type of corneal dystrophy and to offer improved diagnosis of this family of diseases.

8 Nov 2004

After stopping drinking, the brain grows back - significant implications for treatment of alcoholism during recovery

University of North Carolina at Chapel Hill scientists have reported - for the first time - a burst in new brain cell development during abstinence from chronic alcohol consumption.

8 Nov 2004

Prevalence of occult HBV in hemodialysis patients is 4 to 5 times higher than standard HBsAg testing would suggest

Some kidney dialysis patients contract hepatitis B virus (HBV) during the course of their treatment, possibly from other members of the dialysis population with occult HBV.

8 Nov 2004

Regular smear tests rather than colposcopy is the best way of monitoring low-grade cervical lesions

Results of a US study in this week’s issue of THE LANCET suggest that regular smear tests rather than colposcopy is the best way of monitoring low-grade cervical lesions among adolescents and young women.

5 Nov 2004

Tiny, vibrating paddle oscillator senses the mass of a virus

By using a device only six-millionths of a meter long, researchers at Cornell University have been able to detect the presence of as few as a half-dozen viruses -- and they believe the device is sensitive enough to notice just one.

5 Nov 2004

Autophagy may even provide a clue to the mythical fountain of youth

The cells of higher organisms have an internal mechanism for chewing up and recycling parts of themselves, particularly in times of stress, like starvation and disease. But nobody is quite sure yet whether this recently discovered process protects cells, or causes damage.

5 Nov 2004

alpha4 may prove to be useful target for smoking addiction therapies

Nicotine is responsible for more than four million smoking-related deaths each year. Yet people still smoke. Why? One reason is the stranglehold of addiction, started when nicotine enhances the release of a neurotransmitter called dopamine

4 Nov 2004

Crystal structure of protein AIRs kinase uncovered

Cornell University researchers, who are trying to understand how proteins evolve and function by looking at their structural features, have uncovered the crystal structure of a protein involved in making the building blocks of DNA correctly.

4 Nov 2004

DNA News and Research

Further Reading

Sequencing of human genetic code promises to usher in a new era of genetic medicine

Five advanced tests provide answers to couples with unexplained infertility

The brain's dopamine system is key to alcoholism

Heart bypass gets new source for replacement blood vessels

New insight into how our body cells block the development of cancer

Research aims to understand how genetic information translates into biological activity

Lorus Therapeutics allowed Canadian patent to protect anticancer drugs

Sex genes of infectious fungus closely resemble human Y chromosome

Stem cell gene linked to a portion of one of the most common childhood brain cancers

Researchers have developed a new algorithm that can lead to more accurate detection of cancer genes

Stone tools of Indonesian "hobbit" studied

Researchers attempt to quantify processes underlying cell heterogeneity

Search for genetic key to corneal disease

After stopping drinking, the brain grows back - significant implications for treatment of alcoholism during recovery

Prevalence of occult HBV in hemodialysis patients is 4 to 5 times higher than standard HBsAg testing would suggest

Regular smear tests rather than colposcopy is the best way of monitoring low-grade cervical lesions

Tiny, vibrating paddle oscillator senses the mass of a virus

Autophagy may even provide a clue to the mythical fountain of youth

alpha4 may prove to be useful target for smoking addiction therapies

Crystal structure of protein AIRs kinase uncovered

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