University of Adelaide researchers have discovered that the immune system is defective in people suffering from irritable bowel syndrome, which is a major reason why sufferers have ongoing issues with pain.
The research – the first of its kind in the world – could also help to explain why some painkillers may not offer satisfactory relief to sufferers.
Irritable bowel syndrome (IBS) affects up to 10% of the community. There are different forms of IBS but all of them involve unexplained gut pain, which often has the greatest impact on sufferers' quality of life.
Scientists in the University's Nerve-Gut Research Laboratory have now demonstrated the mechanisms involved, and the differences between the immune pain response in healthy people and those suffering from IBS. The results of their work have been published in the journal Brain, Behavior and Immunity.
"This study is the first to give us a real understanding of the interaction between the immune system and pain symptoms in IBS patients," says lead author Dr Patrick Hughes, NHMRC Peter Doherty Fellow with the University's School of Medicine.
"The gut contains specialised immune cells, known as monocytes and macrophages. Our research has shown that in healthy people, these immune cells normally secrete opioid chemicals, like morphine, that block pain. But in people with IBS, the opioid production by these cells is defective," he says.
"So it's no wonder that people with IBS are experiencing ongoing periods of unexplained pain. And if the immune system is defective, it may also mean that painkilling medications taken by the patient to relieve their symptoms are not being adequately converted to pain relief."
The research involved samples from more than 100 people, half of them healthy and half suffering from IBS.
Dr Hughes says the exact cause of pain in IBS sufferers remains unknown, "but we have now confirmed, and detailed, information about the important role of the immune system in this pain response".
"It's our hope that this work could eventually lead to more targeted treatments for IBS sufferers, to help treat or prevent the long-term pain they experience," he says.
This research has been supported by the National Health and Medical Research Council (NHMRC).
Patrick Hughes | European Geosciences Union
Staphylococcus aureus: A new mechanism involved in virulence and antibiotic resistance
23.03.2018 | Institut Pasteur
Scientists develop tiny tooth-mounted sensors that can track what you eat
22.03.2018 | Tufts University
Satellites in near-Earth orbit are at risk due to the steady increase in space debris. But their mission in the areas of telecommunications, navigation or weather forecasts is essential for society. Fraunhofer FHR therefore develops radar-based systems which allow the detection, tracking and cataloging of even the smallest particles of debris. Satellite operators who have access to our data are in a better position to plan evasive maneuvers and prevent destructive collisions. From April, 25-29 2018, Fraunhofer FHR and its partners will exhibit the complementary radar systems TIRA and GESTRA as well as the latest radar techniques for space observation across three stands at the ILA Berlin.
The "traffic situation" in space is very tense: the Earth is currently being orbited not only by countless satellites but also by a large volume of space...
An international team of researchers has discovered a new anti-cancer protein. The protein, called LHPP, prevents the uncontrolled proliferation of cancer cells in the liver. The researchers led by Prof. Michael N. Hall from the Biozentrum, University of Basel, report in “Nature” that LHPP can also serve as a biomarker for the diagnosis and prognosis of liver cancer.
The incidence of liver cancer, also known as hepatocellular carcinoma, is steadily increasing. In the last twenty years, the number of cases has almost doubled...
In just a few weeks from now, the Chinese space station Tiangong-1 will re-enter the Earth's atmosphere where it will to a large extent burn up. It is possible that some debris will reach the Earth's surface. Tiangong-1 is orbiting the Earth uncontrolled at a speed of approx. 29,000 km/h.Currently the prognosis relating to the time of impact currently lies within a window of several days. The scientists at Fraunhofer FHR have already been monitoring Tiangong-1 for a number of weeks with their TIRA system, one of the most powerful space observation radars in the world, with a view to supporting the German Space Situational Awareness Center and the ESA with their re-entry forecasts.
Following the loss of radio contact with Tiangong-1 in 2016 and due to the low orbital height, it is now inevitable that the Chinese space station will...
Fraunhofer Institute for Organic Electronics, Electron Beam and Plasma Technology FEP, provider of research and development services for OLED lighting solutions, announces the founding of the “OLED Licht Forum” and presents latest OLED design and lighting solutions during light+building, from March 18th – 23rd, 2018 in Frankfurt a.M./Germany, at booth no. F91 in Hall 4.0.
They are united in their passion for OLED (organic light emitting diodes) lighting with all of its unique facets and application possibilities. Thus experts in...
A new scenario seeking to explain how Mars' putative oceans came and went over the last 4 billion years implies that the oceans formed several hundred million...
23.03.2018 | Event News
19.03.2018 | Event News
16.03.2018 | Event News
23.03.2018 | Materials Sciences
23.03.2018 | Agricultural and Forestry Science
23.03.2018 | Physics and Astronomy