Featured Research

from universities, journals, and other organizations

Scientists discover new diagnostic markers for Kawasaki disease

Date:
December 20, 2012
Source:
EMBO - excellence in life sciences
Summary:
Researchers have discovered proteins in human urine that offer new opportunities for the diagnosis, study and maybe even the treatment of Kawasaki disease. Mass spectrometry-based proteomic analysis of the human urine proteome, the entire set of proteins found in human urine, uncovered molecular markers that offer significant improvements for the diagnosis of the disease.

Researchers have discovered proteins in human urine that offer new opportunities for the diagnosis, study and maybe even the treatment of Kawasaki disease. Mass spectrometry-based proteomic analysis of the human urine proteome, the entire set of proteins found in human urine, uncovered molecular markers that offer significant improvements for the diagnosis of the disease.

The results are reported in a new study published in EMBO Molecular Medicine.

"There is no diagnostic test for Kawasaki disease. Currently available diagnostic markers lack the specificity and sensitivity needed for reliable detection of the disease which has motivated our decision to use proteomics to identify new, improved biomarkers," said Susan Kim, a rheumatologist at Boston Children's Hospital and an instructor at Harvard Medical School. "Kawasaki disease is often difficult to diagnose and is the most prevalent cause of acquired childhood heart disease in the developed world. Failure to detect it can lead to coronary artery aneurysms and in some cases death, particularly in children who are not diagnosed early enough or when the diagnosis is not considered and acted upon due to the presence of only some of the classic symptoms."

Kawasaki disease can occur at any age but is most commonly found in children under the age of five years. The disease appears to influence the immune system in such a way that it attacks its own tissues. This leads to inflammation that can damage blood vessels, most notably around the heart. If untreated, Kawasaki disease leads to coronary artery aneurysms in up to 25% of cases.

The researchers used highly sensitive mass spectrometry techniques to profile the proteome of urine samples collected from children who had symptoms of Kawasaki disease. Several molecules were discovered that were exclusively present in the urine of patients with the disease. In particular, elevated levels of filamin C and meprin A were detected in both human blood and urine samples and show considerable potential for use as diagnostics.

Filamin C is a protein that helps maintain the structural integrity of heart and skeletal muscle. Meprin A is an enzyme that breaks down proteins and which is known to regulate the activities of other proteins linked to inflammation. Both of these markers could be used to identify patients with Kawasaki disease accurately using tests that are readily amenable for routine medical use.

"The urine proteome consists of thousands of protein molecules. Patients with Kawasaki disease have a unique urinary proteome that is distinct from the proteome observed for children with other causes of fever," remarked Hanno Steen, director of the Proteomics Center at Boston Children's Hospital and associate professor at Harvard Medical School. "In a group of 107 patients, we were able to distinguish children with Kawasaki disease from those with mimicking conditions much more reliably and accurately than currently available testing by measuring their levels of meprin A and filamin C in urine." The researchers note that further validation of the diagnostic markers is needed and this work is in progress.

The researchers suggest that the development of clinical tests using these new markers may improve the accuracy of diagnosis of children with suspected Kawasaki disease and assist in the development of new treatments. For this purpose, the scientists have made the analyzed proteomes openly available at the Peptide Atlas (www.peptideatlas.org).


Story Source:

The above story is based on materials provided by EMBO - excellence in life sciences. Note: Materials may be edited for content and length.


Journal Reference:

  1. Alex Kentsis, Andrew Shulman, Saima Ahmed, Eileen Brennan, Michael C. Monuteaux, Young-Ho Lee, Susan Lipsett, Joao A. Paulo, Fatma Dedeoglu, Robert Fuhlbrigge, Richard Bachur, Gary Bradwin, Moshe Arditi, Robert P. Sundel, Jane W. Newburger, Hanno Steen, Susan Kim. Urine proteomics for discovery of improved diagnostic markers of Kawasaki disease. EMBO Molecular Medicine, 2012; DOI: 10.1002/emmm.201201494

Cite This Page:

EMBO - excellence in life sciences. "Scientists discover new diagnostic markers for Kawasaki disease." ScienceDaily. ScienceDaily, 20 December 2012. <www.sciencedaily.com/releases/2012/12/121220101859.htm>.
EMBO - excellence in life sciences. (2012, December 20). Scientists discover new diagnostic markers for Kawasaki disease. ScienceDaily. Retrieved September 16, 2014 from www.sciencedaily.com/releases/2012/12/121220101859.htm
EMBO - excellence in life sciences. "Scientists discover new diagnostic markers for Kawasaki disease." ScienceDaily. www.sciencedaily.com/releases/2012/12/121220101859.htm (accessed September 16, 2014).

Share This



More Health & Medicine News

Tuesday, September 16, 2014

Featured Research

from universities, journals, and other organizations


Featured Videos

from AP, Reuters, AFP, and other news services

President To Send 3,000 Military Personnel To Fight Ebola

President To Send 3,000 Military Personnel To Fight Ebola

Newsy (Sep. 16, 2014) President Obama is expected to send 3,000 troops to West Africa as part of the effort to contain Ebola's spread. Video provided by Newsy
Powered by NewsLook.com
Man Floats for 31 Hours in Gulf Waters

Man Floats for 31 Hours in Gulf Waters

AP (Sep. 16, 2014) A Texas man is lucky to be alive after he and three others floated for more than a day in the Gulf of Mexico when their boat sank during a fishing trip. (Sept. 16) Video provided by AP
Powered by NewsLook.com
Ivorians Abandon Monkey Pets in Fear Over Ebola Virus

Ivorians Abandon Monkey Pets in Fear Over Ebola Virus

AFP (Sep. 16, 2014) Since the arrival of Ebola in Ivory Coast, Ivorians have been abandoning their pets, particularly monkeys, in the fear that they may transmit the virus. Duration: 00:47 Video provided by AFP
Powered by NewsLook.com
Study Links Male-Pattern Baldness To Prostate Cancer

Study Links Male-Pattern Baldness To Prostate Cancer

Newsy (Sep. 16, 2014) New findings suggest men with a certain type of baldness at age 45 are 39 percent more likely to develop aggressive prostate cancer. Video provided by Newsy
Powered by NewsLook.com

Search ScienceDaily

Number of stories in archives: 140,361

Find with keyword(s):
Enter a keyword or phrase to search ScienceDaily for related topics and research stories.

Save/Print:
Share:

Breaking News:
from the past week

In Other News

... from NewsDaily.com

Science News

Health News

Environment News

    Technology News



    Save/Print:
    Share:

    Free Subscriptions


    Get the latest science news with ScienceDaily's free email newsletters, updated daily and weekly. Or view hourly updated newsfeeds in your RSS reader:

    Get Social & Mobile


    Keep up to date with the latest news from ScienceDaily via social networks and mobile apps:

    Have Feedback?


    Tell us what you think of ScienceDaily -- we welcome both positive and negative comments. Have any problems using the site? Questions?
    Mobile: iPhone Android Web
    Follow: Facebook Twitter Google+
    Subscribe: RSS Feeds Email Newsletters
    Latest Headlines Health & Medicine Mind & Brain Space & Time Matter & Energy Computers & Math Plants & Animals Earth & Climate Fossils & Ruins