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.

Researchers define structure of key part of human obesity receptor

Medical researchers at the University of Sheffield have defined the structure of a key part of the human obesity receptor- an essential factor in the regulation of body fat- which could help provide new treatments for the complications of obesity and anorexia.

27 Apr 2012

Inadequate sleep can increase risk of obesity

Can lack of sleep make you fat? A new paper which reviews the evidence from sleep restriction studies reveals that inadequate sleep is linked to obesity. The research, published in a special issue of the The American Journal of Human Biology, explores how lack of sleep can impact appetite regulation, impair glucose metabolism and increase blood pressure.

17 Apr 2012

Study contains warning for obese expectant mother

A new University of Illinois study contains a warning for obese women who are planning pregnancies. Even if they eat a healthy diet when they are pregnant, their babies will develop in an unhealthy environment that places the infants at risk for future health problems.

16 Apr 2012

Obesity may be under diagnosed using BMI scale

We have relied on body mass index (BMI), a ratio of height to weight, to categorize people as overweight and obese for decades. A new study, however, suggests the use of BMI may be leading us to underestimate the obesity rate.

4 Apr 2012

Obesity gene mutation identified in mice

A new study has found why a mutation in a particular gene can lead to obesity. Mouse experiments suggested the body's message to “stop eating” was blocked if the animals had the mutation. The study, published in Nature Medicine, said the brain's response to appetite hormones was being disrupted.

20 Mar 2012

Soy-based S-equol lowers HbA1c, LDL cholesterol and improves vascular stiffness

A 12-week treatment of the fermented soy germ-based nutritional supplement containing S-equol significantly lowered hemoglobin A1c (HbA1c), LDL cholesterol and improved vascular stiffness, all factors that occur as part of metabolic syndrome, according to a first-of-its-kind peer-reviewed study reported in a poster at the Women's Health 2012 annual meeting.

19 Mar 2012

Study reveals how Bdnf gene mutation contributes to severe obesity

Researchers at Georgetown University Medical Center have revealed how a mutation in a single gene is responsible for the inability of neurons to effectively pass along appetite suppressing signals from the body to the right place in the brain. What results is obesity caused by a voracious appetite.

19 Mar 2012

Sleep less, eat more – Recipe for weight gain

Scientists at the Mayo Clinic in Rochester, Minn., studied a group of 17 healthy volunteers between the ages 18 and 40 for a week in their homes, monitoring how much each of the typically slept and ate.

15 Mar 2012

Sedentary women more prone to developing type 2 diabetes

A new study has found that women who stay seated for long periods of time every day are more prone to developing type 2 diabetes, but that a similar link wasn't found in men.

2 Mar 2012

Parental exposure to PFOA may increase risk of obesity in their daughters

The levels of the environmental pollutant perfluorooctanoic acid (PFOA) that mothers had in their blood during pregnancy increased the risk of obesity in their daughters at 20 years of age.

22 Feb 2012

External stimuli control hormonal regulation of our eating behavior

Max Planck researchers have proven something scientifically for the first time that laypeople have always known: the mere sight of delicious food stimulates the appetite. A study on healthy young men has documented that the amount of the neurosecretory protein hormone ghrelin in the blood increases as a result of visual stimulation through images of food.

20 Jan 2012

Gut bacteria may determine outcome of heart attack

New research published online in the FASEB Journal suggests that the types and levels of bacteria in the intestines may be used to predict a person's likelihood of having a heart attack, and that manipulating these organisms may help reduce heart attack risk.

13 Jan 2012

TAMEST honors UT Southwestern scientist with Edith and Peter O'Donnell Award

Dr. Philipp Scherer, director of the Touchstone Center for Diabetes Research at UT Southwestern Medical Center, was recognized today as a rising star in Texas research by The Academy of Medicine, Engineering and Science of Texas.

13 Jan 2012

Damon Runyon Cancer Research Foundation names 18 new Fellows

The Damon Runyon Cancer Research Foundation, a non-profit organization focused on supporting innovative early career researchers, named 18 new Damon Runyon Fellows at its fall Fellowship Award Committee review.

11 Jan 2012

Fatty food and brain damage: Study finds connection

US scientists found a sudden change to a high-fat diet triggered inflammation in a key area of rodent brains responsible for regulating body weight. The inflammation produced distinctive scarring similar to that seen in stroke patients - and that brain scarring was then observed in humans who were overweight.

28 Dec 2011

Working night shifts may raise risk of diabetes: Study

About 26% percent of the American workforce, including health-care workers and sanitation staff, need to work night shifts. Earlier research has shown that regular night shifts may disrupt the circadian rhythm, raising the risk of heart disease, obesity, ulcers and even depression.

8 Dec 2011

Transplantation of new neurons into damaged area of the brain could restore brain functions

Without neurons reacting to the blood leptin level, the brain does not control the feeling of hunger and fullness. This type of genetic defects results in severe obesity in humans and animals.

25 Nov 2011

Researchers take a step toward neuronal replacement therapy

A new study has revealed that immature neurons taken from healthy mouse embryos can repair damaged brain circuitry and partially normalize metabolism when transplanted into adult mice that have grown morbidly obese due to a genetic deficiency.

24 Nov 2011

Carefully selected young, healthy neurons can repair brain circuitry

Neuron transplants have repaired brain circuitry and substantially normalized function in mice with a brain disorder, an advance indicating that key areas of the mammalian brain are more reparable than was widely believed.

24 Nov 2011

CUMC presents 2011 Naomi Berrie Award to UMDNJ researcher

Columbia University Medical Center (CUMC) presented the 2011 Naomi Berrie Award to Barry E. Levin, MD, a University of Medicine & Dentistry of New Jersey researcher whose work focuses on the mechanisms by which specialized metabolic-sensing neurons regulate glucose and energy homeostasis. Junior investigator Kazuhisa Watanabe, at Columbia University Medical Center, received a Berrie Fellow award.

22 Nov 2011