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Comparative Study
. 1977 May 1;145(5):1176-87.
doi: 10.1084/jem.145.5.1176.

Immunological studies of Aging. III. Cytokinetic basis for the impaired response of lymphocytes from aged humans to plant lectins

B Inkeles, J B Innes, M M Kuntz, A S Kadish, M E Weksler
Comparative Study

Immunological studies of Aging. III. Cytokinetic basis for the impaired response of lymphocytes from aged humans to plant lectins

B Inkeles et al. J Exp Med. .

Abstract

The basis for the age-associated defect in the response of lymphocytes to plant lectins has been studied. Using three independent assays we have shown that the number of mitogen-responsive cells is markedly reduced in lymphocyte preparations from old persons. In addition, studies using colchicine bloock and thymidine pulse techniques have revealed a failure of mitogen-responsive cells from old persons to expand into a proliferating pool of lymphocytes as is observed when lymphocytes from young persons are cultured with phytohemagglutinin. Thus, the impaired response of lymphocytes from old persons to mitogens is attributable to a reduced number of mitogen responsive cells and their failure to undergo clonal expansion.

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References

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