Featured Research

from universities, journals, and other organizations

New approach to celiac testing identifies more at risk

Date:
August 27, 2013
Source:
Walter and Eliza Hall Institute of Medical Research
Summary:
Researchers have developed a new approach to detecting celiac disease, revealing this immune disorder is far more common than previously recognized.

Dr. Jason Tye-Din from the Walter and Eliza Hall Institute and colleagues have developed a new approach to detecting celiac disease, revealing this immune disorder is far more common than previously recognized.
Credit: Walter and Eliza Hall Institute

Australian researchers have developed a new approach to detecting coeliac disease, revealing this immune disorder is far more common than previously recognised.

In a study of more than 2500 Victorians the researchers combined traditional antibody testing (measuring the immune response to gluten) with an assessment of specific genetic risk markers. They found more than half of Australians had genetic risk factors for developing coeliac disease. The research is published online today in the journal BMC Medicine.

Dr Jason Tye-Din from the Immunology division at the Walter and Eliza Hall Institute and Dr Bob Anderson, chief scientific officer at US biotechnology company ImmusanT, worked with Barwon Health, Deakin University, Healthscope Pathology and the University of Queensland Diamantina Institute to develop and trial the new diagnostic approach.

Dr Tye-Din said the new approach of combining the genetic test with a panel of antibody tests would increase the accuracy of testing, decrease overall medical costs by reducing invasive diagnostic tests, and avoid medically unnecessary use of a gluten-free diet.

"Currently, bowel biopsies are recommended for anybody with positive antibody tests," he said. "In this study the inclusion of a simple genetic test helped identify a substantial number of people whose antibody tests were falsely positive and who did not actually require a bowel biopsy to test for the possibility of coeliac disease."

Coeliac disease is caused by an inappropriate immune response to dietary gluten. Gluten can be found in wheat, rye, barley and oats. When gluten is consumed, it can cause a wide range of complaints from chronic tiredness, iron deficiency, osteoporosis, itchy rash, and headaches to various digestive symptoms. Coeliac disease damages the lining of the small intestine and can lead to significant medical complications such as autoimmune disease, infertility, liver failure and cancer. Coeliac disease usually develops in childhood and is life-long, but early diagnosis and treatment can reduce the risk of adverse health complications.

Dr Tye-Din said the newly developed testing strategy showed coeliac disease potentially affected at least one in 60 Australian women and one in 80 men. Previous estimates had the number of Australians with coeliac disease as no more than one in 100. Although this study is the first to reveal that more than half of Australians have genetic risk factors for developing coeliac disease, it is not yet known why the disease develops in only some people.

Dr Tye-Din, who is also a gastroenterologist at The Royal Melbourne Hospital, said the findings were surprising and shed new light on the medical burden of coeliac disease in Australia. "It is concerning that a significant number of people in the community with coeliac disease have not been diagnosed," he said. "Accurate and timely diagnosis is important for the health of patients with coeliac disease. Making a diagnosis based on a blood test alone or commencing a gluten-free diet without a confirmatory bowel biopsy is inappropriate and can impose an unnecessary and lifelong treatment.

"Although small bowel biopsy is needed to confirm coeliac disease it is costly and invasive. Reducing unnecessary procedures is better for patients, eliminating an invasive test, and better for the economy by reducing healthcare costs," Dr Tye-Din said. "This study provides a strategy to improve the diagnosis of coeliac disease in the community by combining the benefits of antibody and genetic testing."

The research was funded by INOVA Diagnostics Inc, Nexpep Pty. Ltd, the NHMRC, the Victorian Health Promotion Foundation, the Geelong Region Medical Research Foundation, and the Victorian government.


Story Source:

The above story is based on materials provided by Walter and Eliza Hall Institute of Medical Research. Note: Materials may be edited for content and length.


Journal Reference:

  1. Anderson RP et al. A novel sero-genetic approach determines the community prevalence of celiac disease and informs improved diagnostic pathways. BMC Medicine, 2013 [link]

Cite This Page:

Walter and Eliza Hall Institute of Medical Research. "New approach to celiac testing identifies more at risk." ScienceDaily. ScienceDaily, 27 August 2013. <www.sciencedaily.com/releases/2013/08/130827204046.htm>.
Walter and Eliza Hall Institute of Medical Research. (2013, August 27). New approach to celiac testing identifies more at risk. ScienceDaily. Retrieved August 21, 2014 from www.sciencedaily.com/releases/2013/08/130827204046.htm
Walter and Eliza Hall Institute of Medical Research. "New approach to celiac testing identifies more at risk." ScienceDaily. www.sciencedaily.com/releases/2013/08/130827204046.htm (accessed August 21, 2014).

Share This




More Health & Medicine News

Thursday, August 21, 2014

Featured Research

from universities, journals, and other organizations


Featured Videos

from AP, Reuters, AFP, and other news services

Possible Ebola Patient in Isolation at California Hospital

Possible Ebola Patient in Isolation at California Hospital

Reuters - US Online Video (Aug. 20, 2014) — A patient who may have been exposed to the Ebola virus is in isolation at the Kaiser Permanente South Sacramento Medical Center. Linda So reports. Video provided by Reuters
Powered by NewsLook.com
Raw: World's Oldest Man Lives in Japan

Raw: World's Oldest Man Lives in Japan

AP (Aug. 20, 2014) — A 111-year-old Japanese was certified as the world's oldest man by Guinness World Records on Wednesday. Sakari Momoi, a native of Fukushima in northern Japan, was given a certificate at a hospital in Tokyo. (Aug. 20) Video provided by AP
Powered by NewsLook.com
Do More Wedding Guests Make A Happier Marriage?

Do More Wedding Guests Make A Happier Marriage?

Newsy (Aug. 20, 2014) — A new study found couples who had at least 150 guests at their weddings were more likely to report being happy in their marriages. Video provided by Newsy
Powered by NewsLook.com
Ebola-Hit Sierra Leone's Freetown a City on Edge

Ebola-Hit Sierra Leone's Freetown a City on Edge

AFP (Aug. 19, 2014) — Residents of Sierra Leone's capital voice their fears as the Ebola virus sweeps through west Africa. Duration: 00:56 Video provided by AFP
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