Navigation Links
Anemia Drug May Worsen Heart Attacks
Date:5/11/2011

By Steven Reinberg
HealthDay Reporter

TUESDAY, May 10 (HealthDay News) -- People given a drug known as erythropoietin alfa after a heart attack may experience new heart problems and even greater cardiac damage from the attack, a new study finds.

The drug, which stimulates red blood cells, has been used in some heart attack patients because certain studies suggested it might reduce the extent of heart attack damage and improve heart function, the researchers explained.

The study was published in the May 11 issue of the Journal of the American Medical Association.

"This study shows that erythropoietin should only be used with caution in patients with recent heart attacks," said Dr. Deepak L. Bhatt, chief of cardiology at the VA Boston Healthcare System, who was not involved in the study.

In fact, "there are hints in this study that the use of erythropoietin might have adverse cardiac effects," said Bhatt, who is also an associate professor of medicine at Harvard Medical School and the author of an accompanying editorial in the journal. This does not mean the drug doesn't have its place, for example, to help reduce transfusions in people with low blood counts, he added.

Known as erythropoiesis-stimulating agents (ESAs), erythropoietin drugs include Procrit and Epogen. They are typically used to treat anemia in cancer patients and to lower the risk of transfusions.

For the new study, dubbed the REVEAL trial, 222 heart attack patients in multiple centers across the United States were randomly assigned to receive erythropoietin alfa or a placebo after undergoing a balloon angioplasty or stent placement to open blocked heart vessels.

The patients had all suffered the most critical type of heart attack -- an ST segment elevation myocardial infarction, or STEMI. Because these patients are in danger of cardiac tissue death due to a local lack of oxygen (infarct) and other changes that increase the chance of heart failure and death, the researchers wanted to see whether erythropoietin alfa might have a protective effect.

The trial was led by Dr. Samer S. Najjar, of the Med-Star Health Research Institute at the Washington Hospital Center, in Washington, D.C. As a phase 2, randomized, double-blind trial involving a placebo and control group, in which neither the patients nor the researchers knew who was getting medication or the sham treatment, it is the type of study considered the gold standard of research.

The heart attack patients taking erythropoietin alfa received an intravenous dose of the medication four hours after a primary or rescue angioplasty or stent procedure; the control group received a saline infusion. Each patient underwent two cardiovascular magnetic resonance imaging scans, one before and one after treatment with erythropoietin alfa or the placebo.

The researchers found the size of the damaged area of the heart remained the same after each scan in both the erythropoietin alfa and placebo groups.

However, among patients 70 and older given erythropoietin alfa, heart damage actually increased over the first week after treatment, the researchers said.

Moreover, five patients receiving erythropoietin alfa either died, had another heart attack or had a blockage in the stent placed during angioplasty. None of the patients receiving placebo had these problems, the researchers said.

This is not the first time Procrit and other ESAs have been linked to serious adverse events. Last year, problems with ESAs prompted the U.S. Food and Drug Administration to require tighter guidelines on them for cancer patients because of the increased risk of stroke, heart failure, tumor promotion and death seen among those taking them.

Commenting on the study, Dr. Gregg Fonarow, the associate chief of cardiology at UCLA's David Geffen School of Medicine, said that "there has been substantial interest in the development of cardioprotective agents which could be administered during acute myocardial infarction (heart attack)."

There has been a growing body of experimental data that suggests erythropoietin may have anti-inflammatory properties and other qualities that could protect the heart, but earlier studies evaluating the effects of erythropoietin have been small, with conflicting results, he added.

"These findings, together with prior studies, suggest that there are not clinically relevant cardioprotective effects with erythropoietin-stimulating agents in patients with acute myocardial infarction," Fonarow said.

More information

For more information on ESAs, visit the U.S. Food and Drug Administration.

SOURCES: Deepak L. Bhatt, M.D., M.P.H., chief of cardiology, VA Boston Healthcare System Director, Integrated Interventional Cardiovascular Program, Brigham and Women's Hospital & VA Boston Healthcare System, associate professor of medicine, Harvard Medical School, Boston; Gregg Fonarow, M.D., associate chief, cardiology, David Geffen School of Medicine, University of California, Los Angeles; May 11, 2011, Journal of the American Medical Association


'/>"/>
Copyright©2010 ScoutNews,LLC.
All rights reserved  

Related medicine news :

1. FDA Tightens Controls on Anemia Drugs
2. For Some on Dialysis, Anemia Drugs Pose Risks
3. Anemia tougher to tackle in black children with kidney disease
4. Anemia Harder to Treat in Black Children With Kidney Disease
5. Anemia Drugs Hold Dangers for Kidney Patients
6. OHSU joins forces with UO, Harvard to accelerate Fanconi anemia research
7. Stroke prevention study in children with sickle cell anemia, iron overload stopped early
8. Anemia Drugs Could Pose Threat to Some Kidney Patients
9. FDA Advisers Back Anemia Drugs for Kidney Patients
10. Use Anemia Drugs for Cancer Patients With Caution, Experts Say
11. Mathematical model of the life cycle of red blood cells may predict risk of anemia
Post Your Comments:
*Name:
*Comment:
*Email:
Related Image:
Anemia Drug May Worsen Heart Attacks
(Date:12/7/2016)... OR (PRWEB) , ... December 07, 2016 , ... Sharon ... Water, Global Climate Change and Your Health on Voice of America, declared on her ... to call attention to the fact that when these bullies attack leaders in corporate ...
(Date:12/7/2016)... , ... December 07, 2016 , ... Delete® - Tattoo ... Time For The Holiday Party Season. Save Up To 33% Off Botox® and Juvederm® ... is providing the Phoenix Valley with Delightful Deals on Botox® and Juvederm® ...
(Date:12/7/2016)... ... 2016 , ... The medical profession is well aware that heart attacks do ... analyzing heart attacks among 138,602 people recorded a 35% higher number of heart attacks ... agree of course–no time of year is a good time for a heart attack! ...
(Date:12/7/2016)... ... December 07, 2016 , ... ... portable bioelectronic medicine device WellnessPro Plus for consumers and healthcare professionals to ... WellnessPro platform by expanding the treatment modalities available in a single device. ...
(Date:12/7/2016)... ... 07, 2016 , ... “Tomorrow Trump Goes To Washington”: a brief but ... presidency and to America. “Tomorrow Trump Goes To Washington” is the creation of published ... for this country. , Nancy attributes her patriotic nature to her WWII veteran father. ...
Breaking Medicine News(10 mins):
(Date:12/7/2016)... Dec. 7, 2016  Organovo Holdings, Inc. (NASDAQ: ... company focused on delivering scientific and medical breakthroughs ... Chairman and Chief Executive Officer Keith Murphy ... Wednesday, December 14, 2016 at 1:00 p.m. Eastern ... not yet familiar with the Company, an informational ...
(Date:12/7/2016)... FRANCISCO , December 7, 2016 ... expected to reach a value of USD 3.9 ... by Grand View Research, Inc. The growth of ... of donor and continuous technological advancements by the ... increasing continuously due to increasing donation, rising awareness ...
(Date:12/6/2016)... -- Diabetes & Obesity Drug Development Pipeline Review, 2016 ... is currently dominated by therapeutics indicated for type 1 ... and the majority of the pipeline, in terms of ... these indications. While products indicated for obesity do not ... large number of these products in the pipeline, with ...
Breaking Medicine Technology: