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.

Presbyopia may affect more than 1 billion worldwide

It is estimated that more than 1 billion individuals worldwide in 2005 had presbyopia, or age-related difficulty in seeing objects nearby, with an estimated 410 million with the condition unable to perform tasks requiring near vision, according to a report in the December issue of Archives of Ophthalmology, one of the JAMA/Archives journals.

8 Dec 2008

Vitamin E supplementation may reduce inflammation in the brain

With up to half of a person's body mass consisting of skeletal muscle, chronic inflammation of those muscles - which include those found in the limbs - can result in significant physical impairment.

5 Dec 2008

Researchers focus on phosphoinositide 3-kinase pathway in cancer research

Researchers are taking a closer look at the phosphoinositide 3-kinase (PI3-kinase) pathway as studies continue to demonstrate that inhibiting this biological route suppresses tumor growth, reports Genetic Engineering & Biotechnology News (GEN ).

5 Dec 2008

Brains of low-income children function differently from brains of high-income kids

University of California, Berkeley, researchers have shown for the first time that the brains of low-income children function differently from the brains of high-income kids.

3 Dec 2008

Researchers study newborns' umbilical cord blood to better understand fetal health risks from smoking mothers

Despite the well-known dangers of first- and secondhand smoke, an estimated ten percent of pregnant women in the U.S. are smokers.

3 Dec 2008

New evidence shows that the heart beats to its own drummer

They've uncovered some of the molecular circuitry within the cardiovascular system itself that controls the daily rise and fall of blood pressure and heart rate. The findings might also explain why commonly used diabetes drugs come with cardiovascular benefits, according to the researchers.

3 Dec 2008

MG53 protein found to be a key initiator of membrane repair in damaged tissue

The study, released in Nature Cell Biology, is the first to specifically pinpoint a protein responsible for promoting cell repair.

3 Dec 2008

More evidence on why the Mediterranean diet is good for heart

Researchers have discovered one potential mechanism by which briefly cutting off, then restoring, blood flow to arteries prior to a heart attack lessens the damage caused, according to a study published today in the journal Cardiovascular Research.

2 Dec 2008

Scientists show function of helical band in heart

Scientists from the California Institute of Technology (Caltech) have created images of the heart's muscular layer that show, for the first time, the connection between the configuration of those muscles and the way the human heart contracts.

1 Dec 2008

Yale researchers find molecule that may help regulate how much animals and people eat

In the battle against obesity, Yale University researchers may have discovered a new weapon - a naturally occurring molecule secreted by the gut that makes rats and mice less hungry after fatty meals.

26 Nov 2008

Researchers identify molecule that tells your brain your stomach is full

In studies with mice and rats, researchers have found that a chemical messenger called NAPE is made in the small intestine after the animals ate a greasy meal. After eating, NAPE - N-acylphosphatidylethanolamine, a mouthful in itself -- enters the blood and travels to the brain, where it quashes hunger signals.

26 Nov 2008

Defective calcium metabolism in nerve cells contributes to neurological disorder

Defective calcium metabolism in nerve cells may play a major role in a fatal genetic neurological disorder that resembles Huntington's disease, researchers at UT Southwestern Medical Center have found in a mouse study.

26 Nov 2008

Baffling chronic pain linked to rewiring of brain

Scientists peered at the brains of people with a baffling chronic pain condition and discovered something surprising.

26 Nov 2008

Mechanisms of cardiovascular disease and cancer give clues to new therapies

Cardiovascular conditions leading to heart attacks and strokes are treated quite separately from common cancers of the prostate, breast or lung, but now turn out to involve some of the same critical mechanisms at the molecular level.

21 Nov 2008

Exercise increases brain growth factor and receptors, prevents stem cell drop in middle age

A new study confirms that exercise can reverse the age-related decline in the production of neural stem cells in the hippocampus of the mouse brain, and suggests that this happens because exercise restores a brain chemical which promotes the production and maturation of new stem cells.

18 Nov 2008

Palladin may play important role in metastasis of breast cancer cells

If scientists knew exactly what a breast cancer cell needs to spread, then they could stop the most deadly part of the disease: metastasis.

17 Nov 2008

Study helps clarify role of vitamin D in cancer therapy

A colon cancer cell isn't a lost cause. Vitamin D can tame the rogue cell by adjusting everything from its gene expression to its cytoskeleton.

17 Nov 2008

Hypertension may develop undetected in young African-American men

Young and healthy African-American men have higher central blood pressure and their blood vessels are stiffer compared to their white counterparts, signs that the African American men are developing hypertension early and with little outward sign, according to a new study.

17 Nov 2008

Microbial population of raw milk found to be more complex than previously thought

Raw milk is illegal in many countries as it can be contaminated with potentially harmful microbes.

16 Nov 2008

Cigarette smoke may reshape the left ventricle

Prolonged exposure to cigarette smoke can increase levels of the stress hormone norepinephrine and enzymes in the heart that have the potential to reshape the left ventricle, according to new research at the University of Illinois at Chicago.

16 Nov 2008