Navigation Links
Global Heartbeat Control Suggests Therapy for Beating Heart Failure

Keeping a healthy heart beating requires the production of a constant supply of energy, a feat depending on the coordination of several genetic programs.

Now, researchers report in the May issue of Cell Metabolism, a publication of Cell Press, that two closely related receptors can act together or separately to pull all of the strings. Drugs that influence these newfound global orchestrators of heart function might offer a novel approach to managing diseases of the heart muscle, according to the researchers.

"The heart is a simple pumping organ," said Vincent Giguere of McGill University in Montreal. "What it needs is energy, which it gets from different fuelsglucose or fatty acidsdepending on their availability. It was thought that separate programs make energy and use it through contraction, but we've revealed two receptors that control the whole setup. That's what's really new."

The orphan nuclear receptor known as ERR was known to scientists as a key regulator in the production of cellular power plants called mitochondria, the researchers explained. But whether ERR or related ERR receptors play a broader role in cardiac energetics and function remained an open question. These receptors are considered "orphans" because the molecules that normally trigger their activity have yet to be defined.

To maintain its essential function, the heart must regulate a cascade of biological processes including the uptake and processing of energy substrates, the conversion of those substrates into usable forms, the sensing of cellular energy charge, and the use of that energy for contraction, the researchers explained.

In their study, the researchers employed a powerful combination of genomic tools to identify the gene promoters to which ERR and bind in the adult mouse heart and to investigate changes in gene and protein expression when levels of ERR are manipulated. That investigation provided evidence that ERR and con trol most aspects of the integrated processes that fuel the heart by regulating the expression of genes involved at each step.

"The receptors control some 400 genes, and probably more," Gigure said. Rather than being randomly distributed, "the genes fell into precise categories of well-defined energy pathways." Further study of mice lacking ERR provided evidence that the receptor plays an important role in the cardiac energy-sensing machinery.

Among the genes targeted by the receptors, the researchers uncovered several that had been linked previously to cardiomyopathies, a finding that Gigure described as "the cherry on the sundae for us." Those direct links to human disease suggest that drugs targeting ERR receptors might hold promise for novel heart therapies. "There are not many ways to prevent heart failure, but molecules that act on these receptors might be one," he said.


'"/>




Related medicine news :

1. SARS-Free Taiwan to Mark End Phase of Global Fight
2. Prevent Global Warming by Becoming A Vegetarian
3. India To March Ahead in The Global HealthCare Competition
4. Global Outbreak Of Bird Flu Warning By Chinese Scientist
5. TWO India Doctors Listed in TIME for Contribution to Global Health
6. Global Hospitals coming to city of Joy
7. John Hopkins CGHH program provides Global Health education
8. Ban on Global fund lifted in Uganda
9. Global Warming Could Cause 5 Million Illnesses: WHO
10. Global Health Bonds to Improve Health Care Facilities for the Underprivileged.
11. Skin Cancer Research To Go Global
Post Your Comments:
*Name:
*Comment:
*Email:


(Date:10/12/2017)... Wis. (PRWEB) , ... October 12, 2017 , ... ... standard products to meet the demand of today’s consumer and regulatory authorities worldwide. ... of probiotic experts and tested to meet the highest standard. , These ...
(Date:10/12/2017)... ... October 12, 2017 , ... The American College of Medical Informatics ... PhD, FACMI, during the Opening Session of AMIA’s Annual Symposium in Washington, D.C. AMIA’s ... of Morris F. Collen, a pioneer in the field of medical informatics, this prestigious ...
(Date:10/12/2017)... ... 12, 2017 , ... Information about the technology: , Otomagnetics ... enable prevention of a major side effect of chemotherapy in children. Cisplatin and ... For cisplatin, hearing loss is FDA listed on-label as a dose limiting toxicity. ...
(Date:10/12/2017)... ... October 12, 2017 , ... HMP , a leader ... a 2017 Folio Magazine Eddie Digital Award for ‘Best B-to-B Healthcare Website.’ Winners were ... 11, 2017. , The annual award competition recognizes editorial and design excellence across a ...
(Date:10/12/2017)... ... October 12, 2017 , ... On Saturday, October 21, the Health ... Miles by Moonlight to raise money for the American Heart Association Heart Walk. Teams ... Teams will work together to keep their treadmills moving for 5 hours. Treadmills will ...
Breaking Medicine News(10 mins):
(Date:10/4/2017)... SEOUL, South Korea , Oct. 4, 2017 /PRNewswire/ ... launched its next-generation CPR training aide "cprCUBE" on Kickstarter. ... of chest compression during cardiac arrests with better efficiency ... patient-mannequins. It also offers real-time feedback on efficacy of ... The crowdfunding campaign has a goal to raise ...
(Date:10/4/2017)... Mass. , Oct. 4, 2017 ... of single-use, self-contained, illuminating medical devices, today announced ... National Health Surveillance Agency (or Agência Nacional de ... The first single-use, cordless surgical retractor with integrated ... provides optimal access, illumination and exposure of a ...
(Date:10/2/2017)... , Oct. 2, 2017  Eli Lilly and Company ... results for the third quarter of 2017 on Tuesday, ... call on that day with the investment community and ... The conference call will begin at 9 a.m. ... access a live webcast of the conference call through ...
Breaking Medicine Technology: