The Upside of Intestinal Worms -- They May Help Promote Healing!

Released: 10-Jan-2012 5:00 PM EST
Embargo expired: 15-Jan-2012 1:00 PM EST
Source Newsroom: Rutgers University
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Citations Nature Medicine (DOI 10.1038/nm.2628, January 15, 2012)

Newswise — NEWARK, N.J. - Intestinal worm infections may not be all bad, according to a new study by William C. Gause, PhD, and colleagues at UMDNJ- New Jersey Medical School. The researchers have found cytokines that help oust intestinal worm infections in mice also soothe associated lung injury and inflammation. Cytokines are proteins released by cells that in turn play a role in communications among various cells in the body. The new study has been published online in advance of print in Nature Medicine.

Many intestinal worms take a detour through the lungs en route to the gut. One such worm is Nippostrongylus brasiliensis, the equivalent in rodents to human hookworm, which currently infects over 700 million people worldwide. As this worm passes through the lungs, it induces tissue damage and inflammation.

To counter this assault, the body mobilizes a specific type of immune response called a Th2 response, which promotes expulsion of the worms. But the benefits of Th2 don’t end there, according to the new research. Specific cell populations and immune proteins induced during a Th2 response to these parasites, including macrophages and interleukin (IL)-4 and -13, help to repair the worm-induced damage to the lungs. The parasite-induced Th2 response appears to activate multiple factors that are important in acute wound healing and control of inflammation, which together orchestrate an enhanced wound healing response. In mice unable to respond to these proteins, the researchers found that lung damage went unchecked.

Thus it is possible that promoting Th2 responses, triggered by parasites, may be beneficial in the treatment of wounds as well as acute lung injury caused by respiratory infections such as pneumonia.

Journalists who wish to interview William C. Gause, PhD, are invited to contact Rob Forman, UMDNJ Chief of News Services, at 973-972-7276 or formanra@umdnj.edu

The University of Medicine and Dentistry of New Jersey (UMDNJ) is the nation's largest free-standing public health sciences university with more than 6,000 students on five campuses attending the state's three medical schools, its only dental school, a graduate school of biomedical sciences, a school of health related professions, a school of nursing and New Jersey’s only school of public health. UMDNJ operates University Hospital, a Level I Trauma Center in Newark, and University Behavioral HealthCare, which provides a continuum of healthcare services with multiple locations throughout the state.


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