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Bleve A, Motta F, Durante B, Pandolfo C, Selmi C, Sica A. Immunosenescence, Inflammaging, and Frailty: Role of Myeloid Cells in Age-Related Diseases. Clin Rev Allergy Immunol 2023; 64:123-144. [PMID: 35031957 PMCID: PMC8760106 DOI: 10.1007/s12016-021-08909-7] [Citation(s) in RCA: 26] [Impact Index Per Article: 26.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 10/22/2021] [Indexed: 12/20/2022]
Abstract
The immune system is the central regulator of tissue homeostasis, ensuring tissue regeneration and protection against both pathogens and the neoformation of cancer cells. Its proper functioning requires homeostatic properties, which are maintained by an adequate balance of myeloid and lymphoid responses. Aging progressively undermines this ability and compromises the correct activation of immune responses, as well as the resolution of the inflammatory response. A subclinical syndrome of "homeostatic frailty" appears as a distinctive trait of the elderly, which predisposes to immune debilitation and chronic low-grade inflammation (inflammaging), causing the uncontrolled development of chronic and degenerative diseases. The innate immune compartment, in particular, undergoes to a sequela of age-dependent functional alterations, encompassing steps of myeloid progenitor differentiation and altered responses to endogenous and exogenous threats. Here, we will review the age-dependent evolution of myeloid populations, as well as their impact on frailty and diseases of the elderly.
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Affiliation(s)
- Augusto Bleve
- Department of Pharmaceutical Sciences, Università del Piemonte Orientale "Amedeo Avogadro", Largo Donegani, via Bovio 6, 2 - 28100, Novara, Italy
| | - Francesca Motta
- Division of Rheumatology and Clinical Immunology, Humanitas Clinical and Research Center- IRCCS, via Manzoni 56, Rozzano, Milan, Italy
- Department of Biomedical Sciences, Humanitas University, Via Rita Levi Montalcini 4, 20072, Pieve Emanuele, Milan, Italy
| | - Barbara Durante
- Department of Pharmaceutical Sciences, Università del Piemonte Orientale "Amedeo Avogadro", Largo Donegani, via Bovio 6, 2 - 28100, Novara, Italy
| | - Chiara Pandolfo
- Department of Pharmaceutical Sciences, Università del Piemonte Orientale "Amedeo Avogadro", Largo Donegani, via Bovio 6, 2 - 28100, Novara, Italy
| | - Carlo Selmi
- Division of Rheumatology and Clinical Immunology, Humanitas Clinical and Research Center- IRCCS, via Manzoni 56, Rozzano, Milan, Italy.
- Department of Biomedical Sciences, Humanitas University, Via Rita Levi Montalcini 4, 20072, Pieve Emanuele, Milan, Italy.
| | - Antonio Sica
- Department of Pharmaceutical Sciences, Università del Piemonte Orientale "Amedeo Avogadro", Largo Donegani, via Bovio 6, 2 - 28100, Novara, Italy.
- Humanitas Clinical and Research Center - IRCCS, via Manzoni 56, 20089, Rozzano, Milan, Italy.
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