HUMORAL IMMUNITY IN AGING

被引:89
作者
PAGANELLI, R
SCALA, E
QUINTI, I
ANSOTEGUI, IJ
机构
[1] Department of Clinical Immunology, “La Sapienza” University, Roma
[2] Cattedra di Immunologia Clinica E Allergologia, Università “La Sapienza”, Roma, 00185
来源
AGING-CLINICAL AND EXPERIMENTAL RESEARCH | 1994年 / 6卷 / 03期
关键词
AGING; B LYMPHOCYTES; CYTOKINES; IMMUNOGLOBULINS;
D O I
10.1007/BF03324229
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
The interactions between B and T lymphocytes, leading to the development of humoral responses, are reviewed with references to the changes occurring in aged people. Aging is perceived as a process of impairment of immune functions; it is known that T cells from aged subjects have a reduced ability to produce IL-2. However, other functions seem to be upregulated in elderly subjects; indeed, IL-1, IL-3, IL-4, IL-6 and TNF alpha production are increased both in aged mice and humans. These cytokines are known to control B cell differentiation, through isotype switch and Ig production. A significant increase in IgG subclasses and IgA is observed in sera of aged subjects. This contrasts with the significant decrease in circulating B lymphocytes. The impairment of primary responses to immunization, and other aspects of humoral immunity, including mucosal responses, autoantibody production and correlations with phenotypic markers of T and B cell subsets, are discussed.
引用
收藏
页码:143 / 150
页数:8
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