Age-related impaired proliferation of peripheral blood mononuclear cells is associated with an increase in both IL-10 and IL-12

被引:47
作者
Castle, SC
Uyemura, K
Crawford, W
Wong, W
Klaustermeyer, WB
Makinodan, T
机构
[1] Univ Calif Los Angeles, Ctr Geriatr Res Educ & Clin, W Los Angeles VA Med Ctr, Multicampus Div Geriatr & Gerontol, Los Angeles, CA 90073 USA
[2] Univ Calif Los Angeles, Dept Med, Los Angeles, CA 90024 USA
[3] Univ Calif Los Angeles, Dept Microbiol & Immunol, Los Angeles, CA 90024 USA
关键词
aging; interleukin-10; interleukin-12; Staphylococcus entertoxin B; superantigen;
D O I
10.1016/S0531-5565(98)00064-3
中图分类号
R592 [老年病学]; C [社会科学总论];
学科分类号
03 ; 0303 ; 100203 ;
摘要
Reflective of age-associated decline in immune function among elderly individuals is a decrease in in vitro T cell proliferative ability. Impaired T cell proliferation in the elderly may result from disruption of the well-balanced network of regulatory cytokines produced during an immune response. The purpose of this study was to identify age-related changes in the production of interleukin (IL)-10 and IL-12, and to determine whether in vitro T cell proliferation can be enhanced in the elderly by modulation of these two key cytokines. The superantigen Staphyloccocus enterotoxin B (SEB) was used to stimulate proliferation and IL-10 and IL-12 production in peripheral blood mononuclear cells (PBMC) in vitro. Proliferation was determined by standard tritiated thymidine uptake. Cytokine levels in culture supermatants were measured by ELISA, We observed impaired SEE-induced proliferation of PBMC in the elderly that is comparable to that seen with the polyclonal mitogen Con A, This age-related decline in proliferation was associated with increased production of both IL-10 and IL-12, Modulation of PBMC proliferative response with either recombinant IL-12 or IL-10-neutralizing antibodies can boost proliferation of elderly PBMC to the levels seen in unmodulated young controls. (C) 1999 Elsevier Science Inc. All rights reserved.
引用
收藏
页码:243 / 252
页数:10
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