In:
Parasitology, Cambridge University Press (CUP), Vol. 76, No. 3 ( 1978-06), p. 299-307
Abstract:
The cytotoxicity of normal rat spleen cells to antibody-coated Trypanosoma cruzi epimastigotes has been studied by assaying the release of [ 3 H]-labelled macromolecules from the parasites. The release of thymidine (DNA) is slower than the release of uridine (RNA), suggesting that the nucleus is broken down more slowly than the cytoplasmic membrane. Less than 50% of the leucine (protein) is released when the parasites are lysed, whereas uridine (RNA) is almost totally released. In practical terms these results show that the release of incorporated radioisotope-labelled uridine can be used as a sensitive assay for cytotoxicity of T. cruzi . Cytotoxicity by normal rat spleen cells is antibody dependent and proportional to the logarithm of effector cell number. The lag phase and the rate of RNA release is not altered by centrifuging the parasites and effector cells to enhance contacts between them.
Type of Medium:
Online Resource
ISSN:
0031-1820
,
1469-8161
DOI:
10.1017/S0031182000048174
Language:
English
Publisher:
Cambridge University Press (CUP)
Publication Date:
1978
detail.hit.zdb_id:
1491287-9
SSG:
12
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