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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).

Potential vaccine target for chlamydia

Scientists at Children's Hospital of Pittsburgh of UPMC have identified a potential target for the development of a vaccine against Chlamydia trachomatis, the most prevalent sexually transmitted bacterial infection in the world.

13 Sep 2007

New Rensselaer tools speed stem cell research

Engineers at Rensselaer Polytechnic Institute have developed tools to help solve two of the main problems slowing the progress of stem cell research - how to quickly test stem cell response to different drugs or genes, and how to create a large supply of healthy, viable stem cells to study from only a few available cells.

13 Sep 2007

New technique detects how proteins undergo changes inside a cell

In the September issue of Molecular & Cellular Proteomics , scientists describe a new technique that can detect how proteins undergo changes inside a cell.

13 Sep 2007

RecA family recombinases repair DNA damages

A biochemistry research team led by Dr. Andrew H.-J. Wang and Dr. Ting-Fang Wang at the Institute of Biological Chemistry, Academia Sinica(IBCAS), has discovered that the RecA family recombinases function as a new type of rotary motor proteins to repair DNA damages.

13 Sep 2007

Genetic link to loneliness

It's already known that a person's social environment can affect their health, with those who are socially isolated - that is, lonely suffering from higher mortality than people who are not.

13 Sep 2007

GeoVax Labs presents successful human trial results for its HIV/AIDS vaccines

GeoVax Labs, Inc. has announced the presentation of successful human trial results for its HIV/AIDS vaccines at the AIDS Vaccine 2007 Conference held August 20-23, 2007 in Seattle, Washington.

13 Sep 2007

Biodiversity of protozoa may be much higher than previously realised

In contrast to previous findings, it seems that the global distribution of macro- and microorganisms might be similar. A study in the online open access journal, BMC Evolutionary Biology, shows that some protozoa are globally dispersed, while others are geographically restricted - by looking at a new fast-evolving DNA marker.

13 Sep 2007

New insight into breast cancer development in high-risk women

Physicians who treat women with the breast cancer susceptibility gene BRCA1 often remove their patients' ovaries to eliminate the source of estrogen they believe fuels cancer growth.

12 Sep 2007

Endurance athlete's genetic edge has long running history

A gene variation commonly found in endurance athletes most likely evolved as humans moved out of warm, food- rich environments to colder and harsher conditions, new research shows.

11 Sep 2007

Vitamin C inhibits the growth of some tumors

Nearly 30 years after Nobel laureate Linus Pauling famously and controversially suggested that vitamin C supplements can prevent cancer, a team of Johns Hopkins scientists have shown that in mice at least, vitamin C - and potentially other antioxidants - can indeed inhibit the growth of some tumors ¯ just not in the manner suggested by years of investigation.

11 Sep 2007

Genetic causes of rheumatoid arthritis

The human genome has now been thoroughly screened in the hunt for the genetic causes of rheumatoid arthritis. The results, which both confirms previous hypotheses and turn the spotlight on entirely new genes, are presented in two articles in the prestigious New England Journal of Medicine.

10 Sep 2007

New genetic risk factor for rheumatoid arthritis and lupus

A genetic variation has been identified that increases the risk of two chronic, autoimmune inflammatory diseases: rheumatoid arthritis (RA) and systemic lupus erythematosus (lupus).

10 Sep 2007

Innovative liquid crystal technology offers promise of new drugs

A partnership between Kent State University, Summa Health System and IC-MedTech Inc. has yielded an innovative liquid crystal technology that offers the promise of new drugs which may more effectively manage cancer and other diseases.

10 Sep 2007

Research looks at prions and retroviruses

National Research Center for Environment and Health in Neuherberg/Munich (Helmholtz Association of German Research Centres) the group is continuing to search for cellular components whose make-up is changed as a result of a prion infection.

10 Sep 2007

Virochip technique identifies new viruses in study of respiratory infections and asthma attacks

A new study has found an unexpected number of viruses and viral subtypes in patients with respiratory tract infections (RTIs). The technique used in the study may help identify new viruses associated with human diseases.

10 Sep 2007

Bad news for disease-causing bacteria!

Scientists have what could be some very bad news for disease-causing bacteria. All three major classes of antibiotics that kill infectious bacteria do so in part by ramping up the production of harmful free radicals, researchers report in the September 7, 2007, issue of Cell, a publication of Cell Press.

10 Sep 2007

Clearer picture of how a dividing cell rebuilds the nuclear envelope

Just how a dividing cell rebuilds the nuclear envelope, the protective, functional wrapping that encases both the original and newly copied genetic material, has been a source of controversy for the last 20 years.

10 Sep 2007

Safer gene therapy - biodegradable polymers to deliver genes

In work that could lead to safe and effective techniques for gene therapy, MIT researchers have found a way to fine-tune the ability of biodegradable polymers to deliver genes.

10 Sep 2007

A chink in bacteria's armor

Biomedical researchers at Boston University's College of Engineering may have discovered the path toward developing better drugs capable of defeating so-called “superbugs,” bacteria that have developed resistance to common antibiotics. The researchers have discovered a previously unknown chain of events occurring in bacteria that opens to door to new avenues of research.

10 Sep 2007

DNA and nanotechnology

DNA is one of the most popular building blocks of nanotechnology and is commonly used to construct ordered nanoscale structures with controlled architectures.

5 Sep 2007