Navigation Links
Halting immune response could save brain cells after stroke
Date:3/13/2014

MADISON A new study in animals shows that using a compound to block the body's immune response greatly reduces disability after a stroke.

The study by scientists from the University of Wisconsin School of Medicine and Public Health also showed that particular immune cells CD4+ T-cells produce a mediator, called interleukin (IL) -21 that can cause further damage in stroke tissue. Moreover, normal mice, ordinarily killed or disabled by an ischemic stroke, were given a shot of a compound that blocks the action of IL-21. Brain scans and brain sections showed that the treated mice suffered little or no stroke damage.

"This is very exciting because we haven't had a new drug for stroke in decades, and this suggests a target for such a drug," says lead author Dr. Zsuzsanna Fabry, professor of pathology and laboratory medicine.

Stroke is the fourth-leading killer in the world and an important cause of permanent disability. In an ischemic stroke, a clot blocks the flow of oxygen-rich blood to the brain. But Fabry explains that much of the damage to brain cells occurs after the clot is removed or dissolved by medicine. Blood rushes back into the brain tissue, bringing with it immune cells called T-cells, which flock to the source of an injury.

The study shows that after a stroke, the injured brain cells provoke the CD4+ T-cells to produce a substance, IL-21, that kills the neurons in the blood-deprived tissue of the brain. The study gave new insight how stroke induces neural injury.

Fabry's co-author Dr. Matyas Sandor, professor of pathology and laboratory medicine, says that the final part of the study looked at brain tissue from people who had died following ischemic strokes. It found that CD4+ T-cells and their protein, IL-21 are in high concentration in areas of the brain damaged by the stroke.

Sandor says the similarity suggests that the protein that blocks IL-21 could become a treatment for stroke, and would likely be administered at the same time as the current blood-clot dissolving drugs.

"We don't have proof that it will work in humans," he says, "but similar accumulation of IL-21 producing cells suggests that it might."

Graduate student Benjamin S. D. Clarkson and scientist Changying Ling were key members of the UW research team, as was Dr. Dandan Sun, formerly of the UW neurosurgery department and now at the University of Pittsburgh, and Dr. Vijay Kuchroo, of the Harvard Medical School.

The paper was published this week in the Journal of Experimental Medicine. A link is available here: http://bit.ly/NToPfg


'/>"/>

Contact: Susan Lampert Smith
ssmith5@uwhealth.org
608-890-5643
University of Wisconsin-Madison
Source:Eurekalert

Related medicine news :

1. ACP, others oppose paying for fiscal cliff by halting Medicaid primary care fee increases
2. MD Anderson, MedImmune join forces to advance cancer immunotherapy
3. Cancer vaccine could use immune system to fight tumors
4. Vitamin A may help boost immune system to fight tuberculosis
5. Immune cells need a second opinion
6. Benaroya Research Institute receives 7-year award to lead Immune Tolerance Network
7. FASEB announces 2014 Science Research Conference: Biology of the Immune System
8. Voices Against Brain Cancer Comments On How Boosting One’s Immune System Can Help Fight Tumor Growth
9. Platinum Soursop: The Natural Health Supplement Helps to Improve Cells Functions & Supports Immune System Now with 1 Extra Bottle Offer
10. Does the bodys immune response to viral vector delivery systems affect the safety or efficacy of gene therapy?
11. Platinum Soursop-The natural health supplement to improve immune system and enhance Mood is finally available for purchase
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:4/28/2016)... , ... April 28, 2016 , ... Head Over Heels ... 9 Western Championships. The competition will be held at the University of Montana on ... gymnasts west of the Mississippi River. , In order to qualify, Varize needed to ...
(Date:4/28/2016)... ... April 28, 2016 , ... ... open availability of a new CDISC standard, Clinical Trial Registry (CTR) XML. ... This innovative standard will make it possible to build applications that generate ...
(Date:4/28/2016)... ... April 28, 2016 , ... Cosmetic Town, an online ... cosmetictown.com . The forum section was recently revamped and upgraded to allow even more ... in use across the country. , According to the senior editor of Cosmetic Town, ...
(Date:4/28/2016)... ... 2016 , ... Greener Hydroponics is now offering a large selection of Smart ... organic farmers and nurseries according to Sales Manager Joe Steele who says, “Now is ... is to offer wholesale level pricing and ultra-fast shipping for growers of any size.” ...
(Date:4/28/2016)... ... April 28, 2016 , ... In 2011, TIME magazine ... the emerging field of biomechatronics, technology that marries human physiology with electromechanics. He continues ... He is also the Founder of BionX , a leader in the field ...
Breaking Medicine News(10 mins):
(Date:4/27/2016)... , April 27, 2016 Tie-up ... initiative to save newborns   ... women & newborns in collaboration with Breast Milk Foundation (BMF), ... first Pasteurized Human Milk Bank, ,Amaara, in Delhi-NCR today. This ... food source for infants and should be available to babies ...
(Date:4/27/2016)... Oasmia Pharmaceutical AB (NASDAQ: ... new generation of drugs within human and veterinary ... Paclical/Apealea in the Phase III study that included ... cancer. These preliminary results showed non-inferiority between the ... versus Taxol in combination with carboplatin. In fact, ...
(Date:4/26/2016)... , April 26, 2016 Diplomat Pharmacy, Inc. ... Jennifer Hagerman , Pharm D., to Vice President ... role at Diplomat, Hagerman will continue to lead and ... that delivers custom education and training to Diplomat employees ... pharmacy industry. Diplomat University also houses the quality assurance ...
Breaking Medicine Technology: