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.

GI nematode infections combat obesity and improve related metabolic disorders

Researchers at the University of Maryland School of Medicine, Baltimore, have shown in a mouse model that infection with nematodes (also known as roundworms) can not only combat obesity but ameliorate related metabolic disorders.

26 Apr 2013

UTMB researchers identify protein that can interfere with the brain's response to leptin

Ever since the appetite-regulation hormone called leptin was discovered in 1994, scientists have sought to understand the mechanisms that control its action. It was known that leptin was made by fat cells, reduced appetite and interacted with insulin , but the precise molecular details of its function -details that might enable the creation of a new treatment for obesity - remained elusive.

18 Apr 2013

Targeting pathway may lead to better hypertension treatments for at-risk patients

Obesity, heart disease, and high blood pressure (hypertension) are all related, but understanding the molecular pathways that underlie cause and effect is complicated.

12 Apr 2013

Weight loss and heart damage: an interview with Dr Lili Barouch, Johns Hopkins University School of Medicine

Obesity causes an increase in the stiffness of the heart, making it hard for the heart muscle to relax and fill with blood in between heartbeats. This abnormal stiffness can lead to congestive heart failure and other problems as it becomes more severe.

4 Apr 2013

Study: Obese people need to lose weight earlier in order to reduce risk of heart disease later

6 Mar 2013

Anti-metabolic syndrome efforts needed for young ALL survivors

Children with acute lymphoblastic leukemia are at risk for developing the metabolic syndrome during maintenance therapy, suggest study findings.

5 Mar 2013

Reversal of heart damage from obesity more likely if you lose weight sooner rather than later

In a study of the impact of weight loss on reversing heart damage from obesity, Johns Hopkins researchers found that poor heart function in young obese mice can be reversed when the animals lose weight from a low-calorie diet. However, older mice, who had been obese for a longer period of time, did not regain better heart function after they were on the same low-calorie diet.

5 Mar 2013

Tumor necrosis factor receptor 2 involved in renal decline in diabetes

Researchers have found that circulating levels of tumor necrosis factor receptor 2 are independently associated with the development of chronic kidney disease in nonobese Japanese patients with Type 2 diabetes.

8 Feb 2013

Retired Jackson Laboratory scientist wins two major international science awards

Douglas Coleman, Ph.D., a retired Jackson Laboratory scientist whose work established the first clues to a genetic component in obesity, has won two major international science awards: the Frontiers of Knowledge Award in Biomedicine from the BBVA Foundation, based in Bilbao, Spain, and the King Faisal International Prize in Medicine from the Saudi Arabian King Faisal Foundation.

31 Jan 2013

Timing of meals predicts weight-loss effectiveness

Most weight-loss plans center around a balance between caloric intake and energy expenditure. However, new research has shed light on a new factor that is necessary to shed pounds: timing. Researchers from Brigham and Women's Hospital (BWH), in collaboration with the University of Murcia and Tufts University, have found that it's not simply what you eat, but also when you eat, that may help with weight-loss regulation.

30 Jan 2013

Tall, thin women face increased risk of infection with nontuberculous mycobacteria

Tall, thin women face a greater risk of infection with nontuberculous mycobacteria (NTM), cousins of the organism that causes tuberculosis, according to researchers at National Jewish Health. Women with NTM infections also showed a weakened immune response associated with their fat cells, in a paper published in the Jan. 15, 2013, issue of The American Journal of Respiratory and Critical Care.

23 Jan 2013

Obese youngsters at far greater risk than had been supposed

While a great deal of research on childhood obesity has spotlighted the long-term health problems that emerge in adulthood, a new UCLA study focuses on the condition's immediate consequences and shows that obese youngsters are at far greater risk than had been supposed.

15 Jan 2013

Leptin hormone also regulates airway diameter

A new study led by Columbia University Medical Center (CUMC) researchers has found that leptin, a hormone that plays a key role in energy metabolism, fertility, and bone mass, also regulates airway diameter.

9 Jan 2013

Arginase, IDO could hold clues to help 79 million Americans with prediabetes

Two enzymes that are elevated in prediabetes could hold clues to helping the 79 million Americans with the condition avoid serious vascular complications and maybe even identify those most at risk for full-blown diabetes, researchers say.

13 Dec 2012

Study points to complexity of relationship between sleep duration and energy balance regulation

A new study suggests that increasing the amount of sleep that adults get could lead to reduced food intake, but the hormonal process differs between men and women.

30 Nov 2012

EMBO signs cooperation agreement with National Science Council of Taiwan and EMBC

New ways of global scientific interaction have been created following a cooperation agreement between EMBO, its inter-governmental funding body, the European Molecular Biology Conference (EMBC), and the National Science Council of Taiwan (NSC).

30 Nov 2012

Young vascular systems adapt to obesity

Researchers have identified physiologic changes in the vascular systems of children that appear to be an adaptive response to obesity.

27 Nov 2012

Some types of bariatric surgery may cause bone loss, say endocrinologists

Bariatric surgery, which significantly curtails the amount of food a person can eat, is the most effective treatment against obesity and is being recognized as a potentially valuable tool in the fight against diabetes related to obesity.

3 Nov 2012

Study determines role of partial sleep deprivation on energy balance and weight regulation

Evidence linking partial sleep deprivation to energy imbalance is relevant to weight gain prevention and weight loss promotion. A new study published today in the Journal of the Academy of Nutrition and Dietetics bases this finding on an extensive review of literature published over a fifteen-year period.

24 Oct 2012

Daily whole body vibration may combat prediabetes in adolescents

Daily sessions of whole-body vibration may combat prediabetes in adolescents, dramatically reducing inflammation, average blood glucose levels and symptoms such as frequent urination, researchers report.

20 Oct 2012