Metabolism News and Research

Latest Metabolism News and Research

FDA approves tapentadol immediate-release tablets for pain in adults

Millions of Americans with moderate to severe acute pain and their health-care providers will soon have a new treatment option.

21 Nov 2008

Non-pharmacologic interventions for the control of osteoporosis and obesity

The Department of Biomedical Engineering at Stony Brook University received a $1.8 million grant from the National Institutes of Health (NIH) to investigate the biologic and physical mechanisms of very low-magnitude mechanical signals and how they strengthen bone and muscle.

20 Nov 2008

Lactic acid found to be important energy source for tumor cells

Many tumors have cells that burn fuel for activities in different ways. Tumor cells near blood vessels have adequate oxygen sources and can either burn glucose like normal cells, or lactic acid (lactate). Tumor cells further from vessels are hypoxic and inefficiently burn a lot of glucose to keep going. In turn, they produce lactate as a waste product.

20 Nov 2008

Light drinking has certain health benefits, researchers look at why

While the physiological damage and social havoc created by alcohol abuse and dependency are well-known, it is also true that light-to-moderate drinking has certain health benefits.

20 Nov 2008

Study identifies causes of bone loss in breast cancer survivors

Osteoporosis is a growing concern among breast cancer survivors and their doctors, because certain cancer drugs can cause bone loss.

19 Nov 2008

Discovery of 13 new tumor-suppressor genes in liver cancer

Over the years, hunting for cancer-related genes and understanding how they work has been an important, although time-consuming, exercise.

18 Nov 2008

Reduced-calories and exercise can modify a postmenopausal woman's risk of breast cancer

Scientists at the University of Texas at Austin have identified pathways by which a reduced-calorie diet and exercise can modify a postmenopausal woman's risk of breast cancer.

18 Nov 2008

Antibiotics can cause pervasive, persistant changes to microbiota in human gut

Using a novel technique developed by Mitchell Sogin of the Marine Biological Laboratory (MBL) to identify different types of bacteria, scientists have completed the most precise survey to date of how microbial communities in the human gut respond to antibiotic treatment.

18 Nov 2008

Accera to launch Axona, medical food product for Alzheimer's in 2009

Accera, Inc. will launch Axona in the United States for Alzheimer's disease (AD) in the first quarter of 2009.

18 Nov 2008

Research looks at human gut when exposed to widely used antibiotic ciprofloxacin

We are always being told by marketers of healthy yogurts that the human gut contains a bustling community of different bacteria, both good and bad, and that this balance is vital to keeping you healthy.

18 Nov 2008

Breakthrough reveals first ever complete structure of a nuclear hormone receptor on human DNA

For decades, scientists have been studying nuclear hormone receptors to gain a better understanding of how they turn genes on and off throughout the body and how they function as key drug targets for a number of diseases, such as diabetes, breast cancer, osteoporosis and high cholesterol. A new UVA Health System study, led by Fraydoon Rastinejad, Ph.D., professor of pharmacology and director of the UVA Center for Molecular Design and published in the October 29 issue of Nature, reveals the first ever complete structure of a nuclear hormone receptor on human DNA – a discovery that now clears a new path for scientists to design more effective drugs with fewer associated health risks. “Dr. Rastinejad’s findings fundamentally change the way people all over the world will study how nuclear hormone receptors work and introduces a new platform for designing better drugs,” says Jim Garrison, Ph.D., professor of pharmacology at UVA Health System. Nuclear hormone receptors, including the peroxisome proliferator-activated receptors (PPARs), are proteins that sit on the surface of cells and bind to specific hormones such as estrogen, progesterone and thyroid hormone. Once the receptor binds to its hormone and its DNA regulatory element, it can cause a number of alterations in the cell, switching genes on and off. These switches control the continual regulation of the metabolic system and reproductive tissues, as well as the development and differentiation of skin, bone and behavioral centers in the brain. “PPARs are widely studied because they regulate the genes that produce fat cells, glucose, insulin, lipids and metabolism,” says Dr. Rastinejad. “That’s what makes them such good drug targets for diseases like diabetes. We can design drugs more rationally to bind to the PPAR nuclear receptor complex to help regulate these functions in the body.” A number of diabetes drugs, called insulin sensitizers, have been developed based on that knowledge, but now that scientists have a clear view into how these receptors bind and what shape they take the door is wide open for the development of better drugs. "After 40 years of nuclear receptor research, we finally can view the first full and complete structure of a nuclear receptor, thanks to Dr. Rastinejad’s break-though achievement,” says Bert W. O’Malley, Ph.D., professor and chairman, Department of Molecular and Cellular Biology at Baylor College of Medicine who is widely considered a top expert in the field.

17 Nov 2008

Scientists discover how certain antibiotics kill bacteria

A series of genetic clues led a team of Boston University biomedical engineers to uncover exactly how certain antibiotics kill bacteria.

17 Nov 2008

Previously unknown regulatory step during HIV replication provides potential new target for HIV/AIDS therapy

A previously unknown regulatory step during human immunodeficiency (HIV) replication provides a potentially valuable new target for HIV/AIDS therapy, report researchers at the Salk Institute for Biological Studies and the University of Wisconsin, Madison.

16 Nov 2008

Higher levels of blood phosphate may be a previously unidentified and modifiable cardiovascular risk factor

Healthy adults with higher levels of phosphate in the blood are more likely to have increased levels of calcium in the coronary arteries-a key indicator of atherosclerosis and future cardiovascular disease risk, reports a study in the February 2009 issue of the Journal of the American Society of Nephrology (JASN).

16 Nov 2008

Osteoporosis drugs may prevent future bone growth

Patients who start and eventually stop regimens of a common class of osteoporosis drugs called bisphosphonates may be unable to benefit from parathyroid hormone (PTH), which can rebuild bone mass lost due to advanced stage osteoporosis. PTH has been proven to increase the volume and strength of the honeycomb-like bone infrastructure, the inner mesh that begins to diminish in old age.

13 Nov 2008