Leptin News and Research

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Leptin is a 16 kDa protein hormone that plays a key role in regulating energy intake and energy expenditure, including appetite and metabolism. It is one of the most important adipose derived hormones. The ''Ob(Lep)'' gene (Ob for obese, Lep for leptin) is located on chromosome 7 in humans.

Missing link between mothers' diets and obesity in kids

New work may have found the missing link between mothers' diets and obesity in kids. A study published in the June issue of Cell Metabolism suggests that a hormone may explain the connection between mothers who are poorly nourished and an increased risk of obesity in their children.

8 Jun 2005

Obesity appears to worsen and possibly cause asthma

Obesity is a known risk factor for type II diabetes, heart disease and some forms of cancer. Evidence is now mounting that obesity is also a risk factor for asthma.

10 May 2005

Many lives may be saved by new blood test for ovarian cancer

A new blood test which has the potential to save many lives has been developed to detect ovarian cancer, a disease known as the silent killer because it is so difficult to identify.

9 May 2005

MRI study shows hormone leptin alters brains, may ease cravings of people with obesity gene

A magnetic resonance imaging (MRI) study finds that the protein hormone leptin promotes development of gray matter in the part of the brain that regulates cravings and the ability to monitor personal behavior.

4 May 2005

Brain system that controls the sleep/wake cycle might also play a role in regulating appetite and metabolism

A new mouse study suggests that a brain system that controls the sleep/wake cycle might also play a role in regulating appetite and metabolism. Mice with a mutation in a gene called "Clock," which helps drive circadian rhythm, ate significantly more and gained more weight.

22 Apr 2005

Researchers study radiation blockers while conducting nuclear imaging of Iodine uptake in mouse tissues

Scientists have found that a dose five times higher than the FDA-recommended dosage of potassium iodide in the event of a nuclear accident is needed to protect small animals effectively from radioactive iodide in medical imaging procedures. The long-term animal nuclear imaging project is being conducted by a collaboration of biology and physics researchers from the Department of Energy's Jefferson Lab and The College of William & Mary (CWM).

20 Apr 2005

Body fat may promote inflammation

Why does extra fat around the waist increase the risk of heart disease? A new study by Wake Forest University Baptist Medical Center researchers and colleagues suggests that inflammation may be the key.

28 Mar 2005

Vegetarians who don't cook their food have abnormally low bone mass

Vegetarians who don't cook their food have abnormally low bone mass, usually a sign of osteoporosis and increased fracture risk. But a research team at Washington University School of Medicine in St. Louis also found that raw food vegetarians have other biological markers indicating their bones, although light in weight, may be healthy.

28 Mar 2005

Q. What turns an obese person into a person with diabetes? - A. Leptin

Twin epidemics of obesity and type 2 diabetes are bearing down on the world's population, threatening the lives of hundreds of millions of people. But scientists are still trying to determine how the two conditions are linked, and what it takes to turn an obese person into a person with diabetes.

16 Mar 2005

The role body fat plays in determining one's risk of chronic diseases

As the prevalence of obesity in America approaches epidemic proportions, researchers are scrambling to learn more about how the body stores fat, how fat tissues affect body systems and the role body fat plays in determining one's risk of chronic diseases.

27 Jan 2005

Insight into potential mechanisms underlying type II diabetes

New research published in the premier issue of Cell Metabolism finds that a single brain region is sufficient for normal control of blood sugar and activity level by the fat hormone leptin. The same region also exerts significant, though more modest, control over leptin's effects on body weight.

19 Jan 2005

Research suggests that lack of sleep may be contributing to the obesity pandemic

The recent rise in obesity may be partly due to the reduced amount of time we spend asleep, according to new research from the University of Bristol, UK.

6 Dec 2004

Battle of Waterloo could help doctors fight death from multiple organ failure

Waterloo’s battlefield is reigniting the debate about whether modern medicine is always good for you, according to University College London (UCL) scientists who are launching a study of why some critically ill patients recover and others die from multiple organ failure - the number one killer of patients in intensive care.

23 Nov 2004

Shp2 protein plays a critical role in obesity

A team of researchers led by The Burnham Institute's Gen-Sheng Feng, Ph.D. has discovered that a protein called Shp2 plays a critical role in obesity.

11 Nov 2004

Brain protein called MC4R that plays a role in the urge to eat has now been found to influence appetite in a second way

A brain protein already known to play a central role in the "feast or fast" signaling that controls the urge to eat has now been found to influence appetite in a second way. The discovery identifies a potential new target for drugs against obesity.

19 Oct 2004

Hormone leptin could play a key role in treating bone loss, anorexia and infertility in women

A new study has found that the hormone leptin plays a key role in women’s reproductive and neuroendocrine health and suggests a future for the hormone in treating a number of conditions including exercise-induced bone loss, anorexia and in some cases of infertility.

2 Sep 2004

Switches in the brain that tell the body to stop eating and start burning calories

A Brown-led research team has discovered a pair of universal switches in the brain that tell the body to stop eating and start burning calories.

3 Aug 2004

Leptin's fat-burning role in humans

For nearly a decade, scientists have known that leptin plays an important fat-burning role in humans. But the map of leptin's path through the body – the key to understanding how and why the hormone works – is still incomplete.

27 Jul 2004

U-M scientists say Wnt protein prevents obesity by inhibiting fat cell development

Genetically engineered mice, created at the University of Michigan Medical School, are living every dieter's dream.

29 Jun 2004

RNA enzyme research may lead to ways of monitoring fat metabolism and might even assist in the search for signs of life on Mars

Research aimed at teasing apart the workings of RNA enzymes eventually may lead to ways of monitoring fat metabolism and might even assist in the search for signs of life on Mars, according to University of Michigan researcher Nils Walter.