Hypothalamus News and Research

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The Hypothalamus is the area of the brain that controls body temperature, hunger, and thirst.

Scientists image process of consciousness after general anesthesia

Awakening from anesthesia is often associated with an initial phase of delirious struggle before the full restoration of awareness and orientation to one's surroundings. Scientists now know why this may occur: primitive consciousness emerges first. Using brain imaging techniques in healthy volunteers, a team of scientists led by Adjunct Professor Harry Scheinin, M.D. from the University of Turku, Turku, Finland in collaboration with investigators from the University of California, Irvine, USA, have now imaged the process of returning consciousness after general anesthesia.

5 Apr 2012

New synthetic small molecules could treat obesity, diabetes and sleep disorders

Scientists from the Florida campus of The Scripps Research Institute have synthesized a pair of small molecules that dramatically alter the core biological clock in animal models, highlighting the compounds' potential effectiveness in treating a remarkable range of disorders-including obesity, diabetes, high cholesterol, and serious sleep disorders.

30 Mar 2012

EMA accepts Arena's lorcaserin MAA for weight control

Arena Pharmaceuticals, Inc. announced today that the European Medicines Agency (EMA) has accepted the filing of a Marketing Authorization Application (MAA) for lorcaserin, an investigational drug candidate intended for weight control, including weight loss and maintenance of weight loss, in patients who are obese (BMI >30) or patients who are overweight (BMI >27) and have at least one weight-related co-morbid condition.

26 Mar 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

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

Scientists report about a brain circuit that mediates loss of appetite

The meal is pushed way, untouched. Loss of appetite can be a fleeting queasiness or continue to the point of emaciation. While it's felt in the gut, more is going on inside the head. New findings are emerging about brain and body messaging pathways that lead to loss of appetite, and the systems in place to avoid starvation.

15 Mar 2012

New kind of on-off switch for cortisol release in the brain discovered

After we sense a threat, our brain center responsible for responding goes into gear, setting off a chain of biochemical reactions leading to the release of cortisol from the adrenal glands.

23 Feb 2012

Scientists uncover genes that govern male and female behaviors

Hormones shape our bodies, make us fertile, excite our most basic urges, and as scientists have known for years, they govern the behaviors that separate men from women. But how? Now a team of scientists at the University of California, San Francisco (UCSF) has uncovered many genes influenced by the male and female sex hormones testosterone and estrogen that, in turn, govern several specific types of male and female behaviors in mice.

3 Feb 2012

FDA EMDAC to discuss Arena's lorcaserin NDA resubmission in second quarter

Arena Pharmaceuticals, Inc. and Eisai Inc. announced today that the US Food and Drug Administration (FDA) has notified Arena that an Endocrinologic and Metabolic Drugs Advisory Committee meeting to discuss the lorcaserin New Drug Application (NDA) resubmission will be held in the second quarter of 2012. Confirmation and details of the meeting will be published in the Federal Register.

2 Feb 2012

Potential way to block second wave of death from pneumonia treatment

An international research team may have found a way to block a second wave of death that can result from pneumonia treatment.

1 Feb 2012

Arena, Eisai collaborate in response to FDA's lorcaserin Complete Response Letter

Arena Pharmaceuticals, Inc. and Eisai Inc. announced today that Arena has submitted its response to the Complete Response Letter (CRL) issued by the US Food and Drug Administration (FDA) following review of the lorcaserin New Drug Application (NDA).

4 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

Obesity associated with hypothalamic injury

The number of people who suffer from one or more of the adverse complications of obesity, including type 2 diabetes and heart disease is rapidly increasing. Thus far, drugs designed to treat obesity have shown limited efficacy and have been associated with serious side effects.

28 Dec 2011

Epilepsy patients can benefit from gamma knife radiosurgery

Neurosurgeons continue to explore minimally invasive surgery with gamma radiation (gamma knife surgery / GKS) in the treatment of brain lesions causing seizures and epilepsy. Studies of the procedure are showing it to be an effective alternative to invasive microsurgery for hypothalamic hamartomas and other lesions that lie deep within the brain.

5 Dec 2011

Hypothalamus may be involved in generating laughter

Anecdotal evidence suggests that the hypothalamus, a structure lying deep within the brain may be involved in generating laughter. Gelastic epilepsy, a rare condition characterized by laughing seizures, is commonly the result of a congenital brain lesion within the hypothalamus.

5 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

Alzheimer’s disease progression and body weight may be linked: Study

There have been studies that show that people who are overweight in middle age are more likely to develop Alzheimer's disease decades later than people at normal weight. However some studies also show that people in the earliest stages of Alzheimer's disease are more likely to have a lower body mass index (BMI).

22 Nov 2011

Study examines link between early-stage Alzheimer's and lower BMI

Studies have shown that people who are overweight in middle age are more likely to develop Alzheimer's disease decades later than people at normal weight, yet researchers have also found that people in the earliest stages of Alzheimer's disease are more likely to have a lower body mass index (BMI). A current study examines this relationship between Alzheimer's disease and BMI.

22 Nov 2011