Abstract
In a super-aging society, the increase in the elderly population is closely tied to a rise in infectious diseases due to factors such as weakened immune systems and decreased vaccine efficacy in older adults. Various opportunistic pathogens commonly encountered in everyday life can cause infections and diseases when an individual's immune defence is weakened due to aging. These factors underscore the importance of preventive measures against pathogenic infections and the aging of immune systems in the elderly. The immune response acts as the defence mechanism against foreign substances, including pathogens and abnormal cells. Specifically, the innate immune response is the body's first line of defence, offering a rapid and nonspecific response to pathogens. Advances in the study of innate immunity's regulatory functions in both immune and non-immune cells have broadened our understanding of innate immune responses' impact on health. This includes a focus on immune effectors like antimicrobial peptides (AMPs) and their potential implications for health and longevity. This review summarises the common principles and evolutionary adaptations of innate immunity via AMPs, in mammals and invertebrates. Especially, this review discusses the conserved mechanisms regulating AMP production and the role of AMPs in modulating aging and diseases from invertebrate to human. Therefore, it highlights the potential role of innate immunity in addressing aging through AMPs.
Published Version
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