Aging-Related Cellular, Structural and Functional Changes in the Lymph Nodes: A Significant Component of Immunosenescence? An Overview.
Cells
; 10(11)2021 11 12.
Article
in English
| MEDLINE | ID: covidwho-1526806
ABSTRACT
Aging affects all tissues and organs. Aging of the immune system results in the severe disruption of its functions, leading to an increased susceptibility to infections, an increase in autoimmune disorders and cancer incidence, and a decreased response to vaccines. Lymph nodes are precisely organized structures of the peripheral lymphoid organs and are the key sites coordinating innate and long-term adaptive immune responses to external antigens and vaccines. They are also involved in immune tolerance. The aging of lymph nodes results in decreased cell transport to and within the nodes, a disturbance in the structure and organization of nodal zones, incorrect location of individual immune cell types and impaired intercellular interactions, as well as changes in the production of adequate amounts of chemokines and cytokines necessary for immune cell proliferation, survival and function, impaired naïve T- and B-cell homeostasis, and a diminished long-term humoral response. Understanding the causes of these stromal and lymphoid microenvironment changes in the lymph nodes that cause the aging-related dysfunction of the immune system can help to improve long-term immune responses and the effectiveness of vaccines in the elderly.
Keywords
Full text:
Available
Collection:
International databases
Database:
MEDLINE
Main subject:
Aging
/
Immunosenescence
/
Lymph Nodes
Type of study:
Observational study
/
Prognostic study
Topics:
Vaccines
Limits:
Animals
/
Humans
Language:
English
Year:
2021
Document Type:
Article
Affiliation country:
Cells10113148
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