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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).

Common gut pathogen increases activity of SMO gene and causes colon tumors

Working with lab cultures and mice, Johns Hopkins scientists have found that a strain of the common gut pathogen Bacteroides fragilis causes colon inflammation and increases activity of a gene called spermine oxidase (SMO) in the intestine.

5 Nov 2011

'Medicine that grows' confronts antibiotics resistance

It's been called "the trots," "Montezuma's Revenge," "the runs" and worse. But no matter the name, when it strikes, victims wish for a medicine that could go straight to the offending bacteria to quickly knock it dead.

4 Nov 2011

New way to screen hirsutism among women

Examining the chin and upper and lower abdomen is a reliable, minimally invasive way to screen for excessive hair growth in women, a key indicator of too much male hormone, researchers report.

4 Nov 2011

Scientists discover alternative mechanism for extension of telomeres

Scientists of the German Cancer Research Center have discovered an alternative mechanism for the extension of the telomere repeat sequence by DNA repair enzymes.

4 Nov 2011

New study in fruit flies offers clues to delay human aging

One of the few reliable ways to extend an organism's lifespan, be it a fruit fly or a mouse, is to restrict calorie intake. Now, a new study in fruit flies is helping to explain why such minimal diets are linked to longevity and offering clues to the effects of aging on stem cell behavior.

3 Nov 2011

Exendin-4 drug could prevent later development of diabetes in children

Pediatric researchers who tested newborn animals with an existing human drug used in adults with diabetes report that this drug, when given very early in life, prevents diabetes from developing in adult animals. If this finding can be repeated in humans, it may become a way to prevent at-risk infants from developing type 2 diabetes.

3 Nov 2011

Researchers use diabetes drug to permanently reprogram insulin-producing cells

3 Nov 2011

Nicotine might prime the brain to enhance behavioral effects of cocaine

A landmark study in mice identifies a biological mechanism that could help explain how tobacco products could act as gateway drugs, increasing a person's future likelihood of abusing cocaine and perhaps other drugs as well, according to the National Institute on Drug Abuse (NIDA), part of the National Institutes of Health. The study is the first to show that nicotine might prime the brain to enhance the behavioral effects of cocaine.

3 Nov 2011

IP-K and Sanofi form new HBV research collaboration

One of the most common and serious infectious diseases, Hepatitis B, is to be targeted in a new collaborative venture between the internationally-renowned translational research institute, Institut Pasteur Korea (IP-K), and the Korean arm of the leading global healthcare company, Sanofi-Aventis Korea. The goal is to develop and validate a high throughput assay to screen IP-K's chemical libraries for novel compounds that can be developed as new drugs.

3 Nov 2011

HRM curve analysis identifies patients at risk of MH

A new DNA test may make it much simpler to identify patients at risk of malignant hyperthermia (MH)—a rare but life-threatening complication of exposure to common anesthetics reports the November issue of Anesthesia & Analgesia, official journal of the International Anesthesia Research Society.

2 Nov 2011

Bacteria rapidly exchange genetic information related to human disease and antibiotic resistance

Much as people can exchange information instantaneously in the digital age, bacteria associated with humans and their livestock appear to freely and rapidly exchange genetic material related to human disease and antibiotic resistance through a mechanism called horizontal gene transfer (HGT).

2 Nov 2011

Researchers discover key enzymes that are critical for sperm function

Compared to most other cells in an organism, sperm undergo a radical transformation to become compact and mobile delivery systems for paternal DNA. Even though sperm looks and moves quite differently across species, SF State researcher Diana Chu and colleagues now say that there are at least a few key enzymes that are critical for sperm development and mobility in species as different as mice and nematode worms.

2 Nov 2011

TERE1 gene mutation also contributes to invasive bladder cancer

Research conducted by Dr. Jayne S. Weiss, Professor and Chair of Ophthalmology at LSU Health Sciences Center New Orleans, and colleagues has found that a defect in a gene involved in a rare disease of the cornea also contributes to the progression of invasive bladder cancer.

2 Nov 2011

Potential drug therapy for Hutchinson Gilford Progeria Syndrome

Researchers have identified a potential drug therapy for a premature ageing disease that affects children causing them to age up to eight times as fast as the usual rate.

2 Nov 2011

Interleukin Genetics commences two new PST test clinical studies in China

Interleukin Genetics, Inc. announced today that the Company has initiated two clinical studies to demonstrate the utility of its new PST genetic test in the ethnic Chinese population. The programs are being conducted in collaboration with Professor Chi-Cheng Tsai of Kaohsiung Medical University and Professor Dong Chen at Shanghai Stomatological Disease Center.

2 Nov 2011

Ultra-sensitive techniques for early detection of breast cancer

A team of scientists at Tufts University will develop ultra-sensitive techniques at the single-molecule and single-cell levels designed to detect breast cancer earlier, and treat it with greater precision, through a $6.6 million Innovator Award from the Department of Defense Breast Cancer Research Program made to Tufts chemist David R. Walt, Ph.D.

1 Nov 2011

Heat, extreme exercise or febrile illness may also trigger MH

Malignant hyperthermia (MH) is a potentially life-threatening inherited disorder of muscle. Patients who are at risk for MH usually have no outward signs of muscle problems. However, when exposed to certain commonly used general anesthetics they may develop very high body temperature, increased heart rate and muscle breakdown. If not recognized and treated promptly MH may be fatal.

1 Nov 2011

Vampire-like bacteria has potential to serve as living antibiotic

A vampire-like bacteria that leeches onto specific other bacteria - including certain human pathogens - has the potential to serve as a living antibiotic for a range of infectious diseases, a new study indicates.

1 Nov 2011

UCB to present new data on Cimzia at ACG annual scientific meeting

UCB, a leading biopharmaceutical company at the forefront of immunology treatment and research, will present new data on Cimzia at the American College of Gastroenterology (ACG) Annual Scientific Meeting, taking place in Washington D.C. from October 28 to November 2.

1 Nov 2011

Aspirin may reduce risk of bowel cancer by half: Study

According to a new study published in The Lancet, a regular dose of aspirin may not only stave off heart disease but also cut the risk of developing hereditary cancer in half.

31 Oct 2011