Forum for Science, Industry and Business

Sponsored by:     3M 
Search our Site:

 

Protein marker predicts possible heart damage after chemotherapy

18.05.2004


High levels of troponin I (TNI) protein in the blood helps identify possible heart damage after cancer treatment, according to a report in today’s rapid access issue of Circulation: Journal of the American Heart Association.



The report also suggests that tracking TNI levels can help doctors form a heart disease prevention plan for some chemotherapy patients. "Damage to the heart is one of the most worrisome long-term side effects of high-dose chemotherapy," said lead author Daniela Cardinale, M.D., deputy director of the cardiology unit at the European Institute of Oncology in Milan, Italy. "Therefore, it is important to identify biochemical markers that might indicate which patients are at greatest risk and how severe their heart disease might be."

TNI is a protein present exclusively in heart cells. The TNI blood concentration is a well-established marker of heart muscle injury that’s widely used to diagnose and treat heart attacks and other acute coronary syndromes.


"Our study is the first to clearly show, in an adult population, that the risk of cardiac events in cancer patients can be predicted by evaluating the TNI release pattern after chemotherapy," Cardinale said.

In cancer patients who have had chemotherapy, physicians usually use extensive testing and expensive monitoring equipment to identify which patients may have cardiac toxicity, Cardinale said. These methods "have low sensitivity, poor predictive value and, in some cases, technical limitations. Moreover, these methods identify cardiac damage only when it has already occurred and, in most cases, is not reversible," she said. "Evaluating TNI value after chemotherapy is an easy, non-invasive, low-cost method that allows us to categorize the risk of cardiac events in cancer patients in the three years following chemotherapy."

Researchers took blood samples of 703 cancer patients to measure TNI soon after high-dose chemotherapy and one month later. TNI values higher than 0.08 nanograms per milliliter (ng/mL) were considered TNI "positive," while lower values were TNI "negative." They found that 145 patients (21 percent) were TNI positive right after chemotherapy, and 63 patients (9 percent) were positive immediately after chemotherapy and one month later.

The researchers found no significant reduction in heart function at the three-year follow-up in patients who were TNI negative. These patients had only a 1 percent incidence of cardiac events, such as heart attacks.

In contrast, the cardiac event incidence was 37 percent among the patients who were TNI positive immediately after chemotherapy and 84 percent among those who remained positive a month later.

Cardinale said the study has several important implications for cancer treatment:
  • TNI categorizes heart disease risk early, long before impairment in heart function and symptoms develop, and when many preventive treatments would probably help prevent long-term health effects.

  • TNI could assess and monitor the safety and effectiveness of different treatments.

  • Heart-protective therapies that might limit or prevent the TNI rise after chemotherapy, and heart treatments that interfere with TNI persistence could improve the future heart health of these patients.

"The results of this study provide a rational need for doctors to use this marker to guide them in their cardiac evaluations and treatments of high-dose chemotherapy patients," Cardinale said.

Co-authors are: Maria T. Sandri, M.D.; Alessandro Colombo, M.D.; Nicola Colombo, M.D.; Marina Boeri, M.S.; Giuseppina Lamantia, M.D.; Maurizio Civelli, M.D.; Fedro Peccatori, M.D.; Giovanni Martinelli, M.D.; Cesare Fiorentini, M.D.; and Carlo M. Cipolla, M.D.

Carole Bullock | EurekAlert!
Further information:
http://www.americanheart.org/

More articles from Health and Medicine:

nachricht Second cause of hidden hearing loss identified
20.02.2017 | Michigan Medicine - University of Michigan

nachricht Prospect for more effective treatment of nerve pain
20.02.2017 | Universität Zürich

All articles from Health and Medicine >>>

The most recent press releases about innovation >>>

Die letzten 5 Focus-News des innovations-reports im Überblick:

Im Focus: Breakthrough with a chain of gold atoms

In the field of nanoscience, an international team of physicists with participants from Konstanz has achieved a breakthrough in understanding heat transport

In the field of nanoscience, an international team of physicists with participants from Konstanz has achieved a breakthrough in understanding heat transport

Im Focus: DNA repair: a new letter in the cell alphabet

Results reveal how discoveries may be hidden in scientific “blind spots”

Cells need to repair damaged DNA in our genes to prevent the development of cancer and other diseases. Our cells therefore activate and send “repair-proteins”...

Im Focus: Dresdner scientists print tomorrow’s world

The Fraunhofer IWS Dresden and Technische Universität Dresden inaugurated their jointly operated Center for Additive Manufacturing Dresden (AMCD) with a festive ceremony on February 7, 2017. Scientists from various disciplines perform research on materials, additive manufacturing processes and innovative technologies, which build up components in a layer by layer process. This technology opens up new horizons for component design and combinations of functions. For example during fabrication, electrical conductors and sensors are already able to be additively manufactured into components. They provide information about stress conditions of a product during operation.

The 3D-printing technology, or additive manufacturing as it is often called, has long made the step out of scientific research laboratories into industrial...

Im Focus: Mimicking nature's cellular architectures via 3-D printing

Research offers new level of control over the structure of 3-D printed materials

Nature does amazing things with limited design materials. Grass, for example, can support its own weight, resist strong wind loads, and recover after being...

Im Focus: Three Magnetic States for Each Hole

Nanometer-scale magnetic perforated grids could create new possibilities for computing. Together with international colleagues, scientists from the Helmholtz Zentrum Dresden-Rossendorf (HZDR) have shown how a cobalt grid can be reliably programmed at room temperature. In addition they discovered that for every hole ("antidot") three magnetic states can be configured. The results have been published in the journal "Scientific Reports".

Physicist Dr. Rantej Bali from the HZDR, together with scientists from Singapore and Australia, designed a special grid structure in a thin layer of cobalt in...

All Focus news of the innovation-report >>>

Anzeige

Anzeige

Event News

Booth and panel discussion – The Lindau Nobel Laureate Meetings at the AAAS 2017 Annual Meeting

13.02.2017 | Event News

Complex Loading versus Hidden Reserves

10.02.2017 | Event News

International Conference on Crystal Growth in Freiburg

09.02.2017 | Event News

 
Latest News

Switched-on DNA

20.02.2017 | Materials Sciences

Second cause of hidden hearing loss identified

20.02.2017 | Health and Medicine

Prospect for more effective treatment of nerve pain

20.02.2017 | Health and Medicine

VideoLinks
B2B-VideoLinks
More VideoLinks >>>