Picture of virus under microscope

Research under the microscope...

The Strathprints institutional repository is a digital archive of University of Strathclyde research outputs.

Strathprints serves world leading Open Access research by the University of Strathclyde, including research by the Strathclyde Institute of Pharmacy and Biomedical Sciences (SIPBS), where research centres such as the Industrial Biotechnology Innovation Centre (IBioIC), the Cancer Research UK Formulation Unit, SeaBioTech and the Centre for Biophotonics are based.

Explore SIPBS research

Mouse mast cell protease-1 is required for the enteropathy induced by gastrointestinal helminth infection in the mouse

Lawrence, C.E. and Paterson, Y.Y.W. and Wright, S.H. and Knight, P.A. and Miller, H.R.P. (2004) Mouse mast cell protease-1 is required for the enteropathy induced by gastrointestinal helminth infection in the mouse. Gastroenterology, 127 (1). pp. 155-165. ISSN 0016-5085

Full text not available in this repository. (Request a copy from the Strathclyde author)

Abstract

The relationship between intestinal pathology and immune expulsion of gastrointestinal nematodes remains controversial. Immune expulsion of gastrointestinal helminth parasites is usually associated with Th2 responses, but the effector mechanisms directly responsible for parasite loss have not been elucidated. Mast cell hyperplasia is a hallmark of infection with gastrointestinal nematodes, in particular Trichinella spiralis. Although the precise mechanism by which mast cells induce expulsion of these parasites has not been elucidated, it has been proposed that mast cell mediators, including cytokines and granule chymases, act to create an environment inhospitable to the parasite, part of this being the induction of intestinal inflammation. Therefore, the aims of this study were to dissect the role of mast cells and mast cell proteases in the induction of parasite-induced enteropathy. Mast cell-deficient W/Wv and mouse mast cell protease-1 (mMCP-1)-deficient mice were infected with T. spiralis, and parasite expulsion, enteropathy, and Th2 responses were determined. Expulsion of the parasite was delayed in both strains of mice compared with wild-type controls; additionally, in both cases, the enteropathy was significantly ameliorated. Although Th2 responses were significantly reduced in mast cell-deficient W/Wv mice, those from mMCP-1-deficient mice were similar to wild-type mice. Additionally, levels of TNF-α and nitric oxide were significantly reduced in both W/Wv and mMCP-1 deficient mice. These results imply that mast cells may contribute to the induction of protective Th2 responses and, importantly, that the intestinal inflammation associated with gastrointestinal helminths is partly mediated by mMCP-1 MLN, mesenteric lymph node; MMC, mucosal mast cell; mMCP-1, mouse mast cell protease-1; MPO, myeloperoxidase; p.i., postinfection; TUNEL, terminal dUTP nick-end labeling; VCU, villus crypt unit