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Failure to demonstrate suppressor T cell activity in the lamina propria of Hymenolepis diminuta-infected rats

Published online by Cambridge University Press:  05 June 2009

C. Palmas
Affiliation:
Istituto di Patologia Sperimentale, Sezione di Parassitologia, Università di Cagliari, Via della Pineta 77, 09125 Cagliari, Italy
D. Wakelin
Affiliation:
MRC Experimental Parasitology Group, Department of Zoology, University of Nottingham, University Park, Nottingham NG7 2RD, UK
G. Bortoletti
Affiliation:
Istituto di Patologia Sperimentale, Sezione di Parassitologia, Università di Cagliari, Via della Pineta 77, 09125 Cagliari, Italy
A. R. Ecca
Affiliation:
Istituto di Patologia Sperimentale, Sezione di Parassitologia, Università di Cagliari, Via della Pineta 77, 09125 Cagliari, Italy
F. Gabriele
Affiliation:
Istituto di Patologia Sperimentale, Sezione di Parassitologia, Università di Cagliari, Via della Pineta 77, 09125 Cagliari, Italy

Abstract

The aim of this study was to examine whether there was an increase of suppressor T cells, relative to helper T cells, in the intestinal lamina propria of Hymenolepis diminuta-infected rats, a condition which might allow the parasite to survive for the life-span of the host. Lamina propria cells were isolated by enzymatic procedure. All lymphocytes were passed over nylon wool columns in order to remove B cells; then the T cells were purified by a panning technique using monoclonal anti-T cell antibodies. Changes in the mitogen-stimulated synthesis of 1gM, IgG and IgA by normal peripheral blood indicator lymphocytes, as measured by sandwich ELISA, was used as an index of help and/or suppression. No significant suppressor T cell activity was observed in the cultures, either from control or infected intestine.

Type
Research Papers
Copyright
Copyright © Cambridge University Press 1993

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