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United States Department of Agriculture

Agricultural Research Service

Title: Selenium (Se) and Vitamin E (Ve) Deficiencies Impair Intestinal Function and Result in Persistent Infection with Heligmosomoides Polygyrus

Authors
item Smith, Allen
item Madden, Kathleen - USUHS, BETHESDA, MD
item Zhao, Aiping - " "
item Auyeung, Karla - " "
item Levander, Orville
item Finkelman, Fred - UNIV CINCINNATI, OH
item Urban, Joseph
item Shea Donohue, P

Submitted to: Meeting Abstract
Publication Type: Abstract Only
Publication Acceptance Date: November 13, 2003
Publication Date: March 24, 2004
Citation: Smith, A.D., Madden, K., Zhao, A., Auyeung, K., Levander, O.A., Finkelman, F., Urban Jr, J.F., Shea Donohue, P.T. 2004. Selenium (se) and vitamin E (ve) deficiencies impair intestinal function and result in persistent infection with heligmosomoides polygyrus [abstract]. Federation of American Society of Experimental Biology Journal. 18(4):A9.

Technical Abstract: Intestinal nematode parasites are responsible for significant morbidity world-wide especially in malnourished populations that express limited immunity and poor worm clearance. Selenium (Se) and vitamin E (VE) deficiencies are likely in the malnourished and contribute to increased pathogenesis following infection with coxsackie- or influenza virus and the protozoan Trypanasoma cruzi, but have not been studied following a nematode infection. Mice infected with the intestinal nematode Heligmosomoides polygyrus (Hp) exhibit a chronic infection that when drug-cleared induces a memory response to a challenge infection characterized by enhanced immune clearance associated with decreased intestinal epithelial cell glucose absorption, increased mucosal permeability, and enhanced smooth muscle contractility. Both Se and/or VE deficiencies resulted in increased worm persistence and egg production during a memory response compared to mice fed an adequate diet. The characteristic increase in serum IL-4 levels was observed in all Hp-infected mice regardless of diet; however, the pattern of decreased glucose absorption and increased smooth muscle contractility was impaired in VE but not Se deficient mice in spite of diet-independent changes in Hp-induced mucosal permeability and Cl- secretion. These results suggest that Se and VE deficiencies impair the host intestinal memory response to Hp infection via two different mechanisms.

Last Modified: 7/23/2014
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