Physiology News and Research

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Human physiology is the science of the mechanical, physical, and biochemical functions of humans in good health, their organs, and the cells of which they are composed. The principal level of focus of physiology is at the level of organs and systems. Most aspects of human physiology are closely homologous to corresponding aspects of animal physiology, and animal experimentation has provided much of the foundation of physiological knowledge. Anatomy and physiology are closely related fields of study: anatomy, the study of form, and physiology, the study of function, are intrinsically tied and are studied in tandem as part of a medical curriculum.

Why we sleep - roundworm C. elegans unlocks sleep mysteries

The roundworm C. elegans, a staple of laboratory research, may be key in unlocking one of the central biological mysteries: why we sleep.

15 Jan 2008

Ringing in the ears

Do your ears ring after a loud concert? Nerves that sense touch in your face and neck may be behind the racket in your brain, University of Michigan researchers say.

11 Jan 2008

Comprehensive assessment of long-term effects of reducing intake of energy

Overweight people who lose a moderate amount of weight get an immediate benefit in the form of better heart health, according to a study conducted at Washington University School of Medicine in St. Louis.

11 Jan 2008

Insights into cell movement likely to aid immune study, cancer research

Scientists at Washington University School of Medicine in St. Louis have used yeast cells to better understand a collection of proteins associated with the formation of actin networks, which are essential to cell movement.

9 Jan 2008

Brain response differences found in way women with irritable bowel syndrome deal with pain

UCLA researchers found that women with IBS cannot effectively turn-off a pain modulation mechanism in the brain, which causes them to be more sensitive to abdominal pain, compared to women without IBS.

9 Jan 2008

Short periods of stress help condition heart to survive major attack

People who experience brief periods of blocked blood flow may be better conditioned to survive a full-blown heart attack later, according to new research from the University of Cincinnati (UC).

8 Jan 2008

Research focuses on basic cellular mechanics that instigate the muscle contractions of labor

In the 21st century, human tissue can be generated from stem cells and severed limbs are successfully reattached, while the physiological processes governing life's most fundamental event, childbirth labor, remain a medical mystery.

4 Jan 2008

Pregnant women who are overweight/obese set the stage for offspring's obesity risk

The number of overweight and obese Americans continues to grow rapidly. Today, 50 percent of adults are overweight and up to 20 percent are obese. While the number of overweight/obese children is at an all time high, the steady increase of overweight infants -- individuals under 11 months old -- is alarming.

4 Jan 2008

Magnetic therapy shown to significantly reduce swelling after tissue trauma

A recent study by University of Virginia researchers demonstrates that the use of an acute, localized static magnetic field of moderate strength can result in significant reduction of swelling when applied immediately after an inflammatory injury.

4 Jan 2008

Peptide hormone found in the body prevents obesity and diabetes

A new study finds that a chemical found in the body is capable of promoting weight loss, improving insulin resistance and reversing diabetes in an animal model.

4 Jan 2008

Down syndrome points to a new way of repressing cancer growth

Researchers at Johns Hopkins and Ohio State University have found that the number of copies of a particular gene can affect the severity of colon cancer in a mouse model. Publishing in the Jan. 3 issue of Nature, the research team describes how trisomy 21, or Down syndrome in humans, can repress tumor growth.

4 Jan 2008

Avalon Explosion shaped early history of multicellular life

Scientists have known for some time that most major groups of complex animals appeared in the fossils record during the Cambrian Explosion, a seemingly rapid evolutionary event that occurred 542 million years ago.

4 Jan 2008

Vitamin D2 is as effective as vitamin D3 in maintaining concentrations of 25-hydroxyvitamin D

Researchers from Boston University School of Medicine (BUSM) have found that vitamin D2 is equally as effective as vitamin D3 in maintaining 25-hydroxyvitamin D status.

3 Jan 2008

Effects of sleep deprivation reversed

Researchers at Wake Forest University School of Medicine have shown that the effects of sleep deprivation on cognitive performance can be reversed when the naturally occurring brain peptide, orexin-A, is administered in monkeys.

3 Jan 2008

Ensuring heart safety of non-heart drugs

Current regulatory policies should be strengthened to ensure acceptable cardiovascular safety of drugs developed primarily for non-cardiovascular medical problems, according to a recent presentation made by Dr. Jeffrey Borer, an authority in cardiovascular medicine and surgery at NewYork-Presbyterian Hospital/Weill Cornell Medical Center in New York City.

2 Jan 2008