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    Frailty is a complex physiological syndrome associated with adverse ageing and decreased physiological reserves. Frailty leads to cognitive and physical disability and is a significant cause of morbidity, mortality and economic costs. The underlying cause of frailty is multifaceted, including immunosenescence and inflammaging, changes in microbiota and metabolic dysfunction. Currently, salivary biomarkers are used as early predictors for some clinical diseases, contributing to the effective prevention and treatment of diseases, including frailty. Sample collection for salivary analysis is non-invasive and simple, which are paramount factors for testing in the vulnerable frail population. The aim of this review is to describe the current knowledge on the association between frailty and the inflammatory process and discuss methods to identify putative biomarkers in salivary fluids to predict this syndrome. This study describes the relationship between i.-inflammatory process and frailty; ii.-infectious, chronic, skeletal, metabolic and cognitive diseases with inflammation and frailty; iii.-inflammatory biomarkers and salivary fluids. There is a limited number of previous studies focusing on the analysis of inflammatory salivary biomarkers and frailty syndrome; hence, the study of salivary fluids as a source for biomarkers is an open area of research with the potential to address the increasing demands for frailty-associated biomarkers. Copyright © 2022 The Authors. Published by Elsevier Inc. All rights reserved.


    Alfonssina Niebla-Cárdenas, Halin Bareke, Pablo Juanes-Velasco, Alicia Landeira-Viñuela, Ángela-Patricia Hernández, Enrique Montalvillo, Rafael Góngora, Eva Arroyo-Anlló, Ana Silvia Puente-González, Roberto Méndez-Sánchez, Manuel Fuentes. Translational research into frailty from bench to bedside: Salivary biomarkers for inflammaging. Experimental gerontology. 2023 Jan;171:112040

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    PMID: 36455696

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