Corporate Banner
Satellite Banner
Scientific Community
Become a Member | Sign in
Home>News>This Article

Blocking Inflammation can Prevent Heart Attack Damage

Published: Tuesday, March 26, 2013
Last Updated: Tuesday, March 26, 2013
Bookmark and Share
New research from UC Davis shows that blocking an enzyme that promotes inflammation can prevent the tissue damage following a heart attack that often leads to heart failure.

Led by Nipavan Chiamvimonvat, cardiologist and professor of internal medicine, a team of researchers tested a compound that inhibits the enzyme soluble epoxide hydrolase — or sEH — one of the key players in the robust immune-system response that heals tissue following an injury. The enzyme, however, can become counterproductive after a cardiac event.

Chiamvimonvat explained that sEH increases proinflammatory lipid mediators, leading to long-term, heightened inflammatory conditions. It also causes cells, which typically link together and provide the foundation for heart tissue, to overwork. The outcome is scar tissue, or fibrosis, that results in an abnormal relaxation of the heart after each beat, taxing remaining heart muscle as it performs double duty and eventually leading to a decline in the heart's pumping action.

"We often see patients following a heart attack in clinic who initially respond well to current treatments, which address the initial causes of the cardiac event and try to preserve heart function," said Chiamvimonvat, whose research focuses on the biological mechanisms of heart disease. "Over time, though, heart function in some patients continues to worsen and can lead to heart failure. It would be ideal to have new approaches that target the cellular overproduction that leads to heart muscle stiffening and cardiac fibrosis."

Heart failure progressively limits oxygen throughout the body, reducing mobility, respiration and quality of life. According to the Centers for Disease Control and Prevention, the condition affects 5.7 million people in the U.S. and costs the nation $34.4 billion in health-care services, medications and lost productivity. About half of people who have heart failure die within five years of diagnosis.

Previous research by Chiamvimonvat showed that an sEH inhibitor synthesized in the laboratory of entomology Professor Bruce Hammock can reduce the enlargement of heart muscle cells and associated arrhythmia. For the current study, she conducted a series of experiments to determine if it could also be a potential treatment for fibrosis.

Chiamvimonvat and her team tested the compound on a mouse model for heart attack. Because cardiac fibrosis can also be caused by other long-term cardiac diseases, the compound was also used on a mouse model for the chronic pressure overload commonly seen with hypertension. For both models, one group of mice was given the compound with their drinking water, while another group was not. The animals' heart functions were assessed using echocardiography.

The results showed that the mice receiving treatment had significant decreases in adverse cardiac muscle remodeling following a heart attack or due to chronic pressure overload. Their overall cardiac function also improved. Additional tests performed in Hammock's lab showed significantly reduced inflammatory factors in their systems.

"Our study shines new light on this inflammation pathway and identifies a potential therapeutic target that could greatly expand options for one of the biggest and most difficult-to-treat problems in cardiology," said Javier Lopez, cardiologist, assistant professor of internal medicine and study co-author who developed methods used in the study to quantify fibrotic cells.

The team hopes to test the compound next on a larger animal model as a precursor to human clinical trials.

"This project is part of a long-term, exciting collaboration between two labs dedicated to combining their strengths to benefit human health," said Hammock. "The translational value of our research is significant."

Further Information
Access to this exclusive content is for Technology Networks Premium members only.

Join Technology Networks Premium for free access to:

  • Exclusive articles
  • Presentations from international conferences
  • Over 2,600+ scientific posters on ePosters
  • More than 3,800+ scientific videos on LabTube
  • 35 community eNewsletters

Sign In

Forgotten your details? Click Here
If you are not a member you can join here

*Please note: By logging into you agree to accept the use of cookies. To find out more about the cookies we use and how to delete them, see our privacy policy.

Related Content

Opening the Door to Safer, More Precise Cancer Therapies
New method regulates when, and how strongly, cancer-killing therapeutic T cells are activated.
Tuesday, September 29, 2015
Virus In Cattle Linked To Human Breast Cancer
A new study by UC Berkeley researchers establishes for the first time a link between infection with the bovine leukemia virus and human breast cancer.
Wednesday, September 16, 2015
Scientists Create CRISPR/Cas9 Knock-In Mutations in Human T Cells
In a project spearheaded by investigators at UC San Francisco, scientists have devised a new strategy to precisely modify human T cells using the genome-editing system known as CRISPR/Cas9.
Tuesday, July 28, 2015
Engineers Crack DNA Code of Autoimmune Disorders
Researchers have identified an unexpectedly general set of rules that determine which molecules can cause the immune system to become vulnerable to the autoimmune disorders lupus and psoriasis.
Wednesday, June 10, 2015
Using microRNA Fit to a T (Cell)
Researchers show B cells can deliver potentially therapeutic bits of modified RNA.
Friday, November 29, 2013
Autoimmune Disease Strategy Emerges from Immune Cell Discovery
UCSF experiments halt pancreas destruction in mouse model of diabetes.
Wednesday, September 11, 2013
Tuberculosis and Parkinson’s Disease Linked by Unique Protein
UCSF researchers seek way to boost protein to fight both diseases.
Wednesday, September 11, 2013
Therapy Could Treat Breast Cancer that's Spread to Brain
Researchers have successfully combined cellular therapy and gene therapy in a mouse-model system to develop a viable treatment strategy for breast cancer that has spread to a patient's brain.
Tuesday, August 06, 2013
Immune System Molecule Promotes Tumor Resistance
A team of scientists has shown for the first time that a signaling protein involved in inflammation also promotes tumor resistance to anti-angiogenic therapy.
Tuesday, August 06, 2013
Intestinal Bacteria May Fuel Inflammation and Worsen HIV Disease
Changes in intestinal bacteria may help explain why successfully treated HIV patients still experience life-shortening chronic diseases.
Friday, July 12, 2013
Prenatal Maternal Antibodies Affect Child Development
Prenatal exposure to specific combinations of antibodies found only in mothers of children with autism leads to changes in the brain that adversely affect behavior and development.
Wednesday, July 10, 2013
Absence of Gene Leads to Earlier, More Severe Case of Multiple Sclerosis
UCSF finding in animal study may lead to biomarker that predicts course of disease in humans.
Tuesday, June 25, 2013
Developmental Protein Plays Role in Spread of Cancer
A protein used by embryo cells during early development, and recently found in many different types of cancer, apparently serves as a switch regulating metastasis.
Tuesday, June 18, 2013
Depression Linked to Telomere Enzyme, Aging, Chronic Disease
The first symptoms of major depression may be behavioral, but the common mental illness is based in biology — and not limited to the brain.
Thursday, May 23, 2013
Program for Breakthrough Biomedical Research to Celebrate 15 Years
A program that fosters basic science projects of potentially high impact is celebrating 15 years of discovery at UC San Francisco.
Tuesday, May 21, 2013
Scientific News
Antibody Treatment Efficacious in Psoriasis
An experimental, biologic treatment, brodalumab, achieved 100 percent reduction in psoriasis symptoms in twice as many patients as a second, commonly used treatment, according to the results of a multicenter clinical trial led by Mount Sinai researchers.
Four Gut Bacteria Decrease Asthma Risk in Infants
New research by scientists at UBC and BC Children’s Hospital finds that infants can be protected from getting asthma if they acquire four types of gut bacteria by three months of age.
Escape Prevention
Studying flu virus structure brings us a step closer to a permanent vaccine.
New Molecular Marker for Killer Cells
Cell marker enables prognosis about the course of infections.
Editing Genes to Create HIV Killers
Seattle scientists have managed to genetically transform human cells in the lab from HIV targets to HIV killers, and the technique could have implications for cancer and other diseases.
Antibiotic Overuse Might be Why so Many People Have Allergies
The Centers for Disease Control and Prevention estimates that drug resistant bacteria cause 23,000 deaths and two million illnesses each year.
Molecular ‘Kiss Of Death’ Flags Pathogens For Destruction
Researchers have discovered that our bodies mark pathogen-containing vacuoles for destruction by using a molecule called ubiquitin, commonly known as the "kiss of death."
Opening the Door to Safer, More Precise Cancer Therapies
New method regulates when, and how strongly, cancer-killing therapeutic T cells are activated.
Vaccination On The Horizon For Severe Viral Infection Of The Brain
Researchers from the University of Zurich and the University Hospital Zurich reveal possible new treatment methods for a rare, usually fatal brain disease.
What Do Animal Viruses Have to Do with Human Health?
Simon Anthony studies animal infections to prevent outbreaks in people.

Skyscraper Banner
Go to LabTube
Go to eposters
Access to the latest scientific news
Exclusive articles
Upload and share your posters on ePosters
Latest presentations and webinars
View a library of 1,800+ scientific and medical posters
2,600+ scientific and medical posters
A library of 2,500+ scientific videos on LabTube
3,800+ scientific videos