Navigation Links
Inhibition of GRK2 is protective against acute cardiac stress injuries
Date:11/17/2009

(PHILADELPHIA) Inhibition of a protein known to contribute to heart failure also appears to be protective of the heart in more acute cardiac stress injury, namely ischemia reperfusion, according to two studies conducted at the Center for Translational Medicine at Thomas Jefferson University. The studies will be presented at the American Heart Association Scientific Sessions 2009 in Orlando, Fla.

The first study was presented by Henriette Brinks, M.D., a postdoctoral fellow in the Center for Translational Medicine. The researchers, led by Walter J. Koch, Ph.D., director of the Center for Translational Medicine, examined mice that overexpressed the G-Protein coupled Receptor Kinase-2 (GRK2). This overexpression was deleterious in ischemic myocardium, according to Dr. Koch, in that these mice had larger areas of infarction or myocardial death. However, inhibition of GRK2 activity with the peptide GRK2 inhibitor, ARKct, was cardioprotective, and resulted in less cell death and increased AKT signaling, with more viable myocardium and improved post-ischemic cardiac function.

In the second study, Dr. Koch, who is also the W.W. Smith Professor of Medicine at Jefferson Medical College of Thomas Jefferson University, and his team looked at mice that had a heart-specific deletion of the GRK2 gene. This study was presented by Erhe Gao, M.D., Ph.D, research associate professor in the Center for Translational Medicine. This study revealed that when the GRK2 protein is absent from heart cells, there is limited damage to the myocardium after ischemic injury, including decreased cell death. This leads to improved recovery from acute cardiac damage.

"We know that levels of GRK2 are increased in chronic heart failure, but studies have also shown that increases of GRK2 levels are one of the first changes observed after acute heart damages such as heart attack and ischemia," Dr. Koch said. "Both of these studies show that the absence of GRK2 activity protects the cardiac myocytes against ischemic reperfusion."

The results of these studies show that inhibiting GRK2 is a viable therapeutic approach that reduces acute ischemia injury to the myocardium, and is a strategy to limit acute myocardial ischemia.


'/>"/>

Contact: Emily Shafer
emily.shafer@jefferson.edu
215-955-6300
Thomas Jefferson University
Source:Eurekalert

Related medicine news :

1. Inhibition of NF-kappa B, a key inflammatory protein, reduced radiation toxicity in zebrafish
2. Proteasome inhibition affects epigenetic mechanisms
3. An effective strategy for inhibition of cirrhosis
4. Webinar on June 25 to Focus on Opportunity for Treating Chronic Pain, Migraine and Muscle Spasticity Through Inhibition of Neurotransmitter Glutamate
5. New York Merchants Protective Co. Designated as Authorized Geutebruck Solutions Provider
6. American Heart Association Meeting Report: High-Sugar Diet Increases Mens Blood Pressure; Gout Drug Protective
7. Makers of Trojan(R) Brand Condoms Introduce Trojan 2GO(R), a Unique, Portable, Protective and Discreet Packaging for Condoms
8. Flip for Fall Seasonal Household Tips Include Ten Million Reasons to Use Allergy-Protective Bedding
9. Personal Protective Equipment Conference Set for November 17 - 19 in Fort Lauderdale
10. New Study Reveals Mouthguards are Protective, but can Cause Harm
11. NBA All-Star Amare Stoudemire Discusses Season-Ending Eye Injury and the Importance of Protective Eyewear
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:12/2/2016)... ... ... The annual time frame to change Medicare health and prescription drug coverage, ... Currently-enrolled Medicare beneficiaries who are looking to switch from their current plan to a ... changes during this period order for their new policy to go into effect in ...
(Date:12/2/2016)... ... 2016 , ... More than half of American teens report losing their virginity ... with their child about sex related topics, less than 60 percent spoke about deeper ... announce the launch of its second edition of the “Sexual Wellness” campaign, aiming to ...
(Date:12/2/2016)... ... 2016 , ... Sourced from the Isbre Springs beneath the 5,000 year old ... purity of just 6 ppm TDS (Total Dissolved Solids) in addition to its excellent ... in several ShopRite and FoodTown stores in NJ and received rave comments from consumers. ...
(Date:12/2/2016)... ... December 02, 2016 , ... On November 24th, ... families from eight different sites throughout Miami-Dade and Broward counties. This is the ... very hard on Thanksgiving morning by putting together individual meals via assembly lines ...
(Date:11/30/2016)... ... November 30, 2016 , ... Northridge ... in-house dental plan for all patients. Understanding that budget can play a part ... a number of perks, including discounts on many valuable dental treatments. Options for ...
Breaking Medicine News(10 mins):
(Date:12/2/2016)... bioLytical Laboratories, ein Weltführer bei schnellen Tests für Infektionskrankheiten, hat sein ... eingeführt. Continue Reading ... ... , ... ) bioLytical wurde durch die Clinton Health Access ...
(Date:12/2/2016)... , Dec. 2, 2016   CytoSorbents Corporation ... commercializing its European Union approved CytoSorb ® cytokine ... surgery patients worldwide, announced that Dr. Phillip Chan ... 9th Annual LD Micro Main Event investor conference ... at the Luxe Sunset Boulevard Hotel in ...
(Date:12/2/2016)... LYME, Conn. , Dec. 1, 2016  Today, ... has announced the honor of being selected as winners ... include: Simpson Healthcare Executives Website at the PLATINUM level, ... Conversations Training Module at the GOLD Level, and our ... At Simpson Healthcare Executives, we are excited ...
Breaking Medicine Technology: