Circulating Mitochondrial-Derived Vesicles, Inflammatory Biomarkers and Amino Acids in Older Adults With Physical Frailty and Sarcopenia: A Preliminary BIOSPHERE Multi-Marker Study Using Sequential and Orthogonalized Covariance Selection - Linear Discriminant Analysis

被引：34

作者：

Marzetti, Emanuele ^{[1
,2
]}

Guerra, Flora ^{[3
]}

Calvani, Riccardo ^{[1
]}

Marini, Federico ^{[4
]}

Biancolillo, Alessandra ^{[5
]}

Gervasoni, Jacopo ^{[1
,2
]}

Primiano, Aniello ^{[2
]}

Coelho-Junior, Helio Jose ^{[2
]}

Landi, Francesco ^{[1
,2
]}

Bernabei, Roberto ^{[1
,2
]}

Bucci, Cecilia ^{[3
]}

Picca, Anna ^{[1
]}

机构：

[1] Fdn Policlin Univ Agostino Gemelli IRCCS, Rome, Italy

[2] Univ Cattolica Sacro Cuore, Rome, Italy

[3] Univ Salento, Dept Biol & Environm Sci & Technol, Lecce, Italy

[4] Sapienza Univ Roma, Dept Chem, Rome, Italy

[5] Univ Aquila, Dept Phys & Chem Sci, Laquila, Italy

来源：

FRONTIERS IN CELL AND DEVELOPMENTAL BIOLOGY | 2020年 / 8卷

关键词：

aging; biomarkers; cytokines; extracellular vesicles; geroscience; metabolomics; mitochondrial dysfunction; mitochondrial quality control; SKELETAL-MUSCLE; METABOLISM; ASSOCIATION; PERFORMANCE; RATIONALE; MORTALITY; RESPONSES; DISEASE;

D O I：

10.3389/fcell.2020.564417

中图分类号：

Q2 [细胞生物学];

学科分类号：

071009 ; 090102 ;

摘要：

Physical frailty and sarcopenia (PF&S) is a prototypical geriatric condition characterized by reduced physical function and low muscle mass. The multifaceted pathophysiology of this condition recapitulates all hallmarks of aging making the identification of specific biomarkers challenging. In the present study, we explored the relationship among three processes that are thought to be involved in PF&S (i.e., systemic inflammation, amino acid dysmetabolism, and mitochondrial dysfunction). We took advantage of the well-characterized cohort of older adults recruited in the "BIOmarkers associated with Sarcopenia and Physical frailty in EldeRly pErsons" (BIOSPHERE) study to preliminarily combine in a multi-platform analytical approach inflammatory biomolecules, amino acids and derivatives, and mitochondrial-derived vesicle (MDV) cargo molecules to evaluate their performance as possible biomarkers for PF&S. Eleven older adults aged 70 years and older with PF&S and 10 non-sarcopenic non-frail controls were included in the analysis based on the availability of the three categories of biomolecules. A sequential and orthogonalized covariance selection-linear discriminant analysis (SO-CovSel-LDA) approach was used for biomarkers selection. Of the 75 analytes assayed, 16 had concentrations below the detection limit. Within the remaining 59 biomolecules, So-CovSel-LDA selected a set comprising two amino acids (phosphoethanolamine and tryptophan), two cytokines (interleukin 1 receptor antagonist and macrophage inflammatory protein 1 beta), and MDV-derived nicotinamide adenine dinucleotide reduced form:ubiquinone oxidoreductase subunit S3 as the best predictors for discriminating older people with and without PF&S. The evaluation of these biomarkers in larger cohorts and their changes over time or in response to interventions may unveil specific pathogenetic pathways of PF&S and identify new biological targets for drug development.

引用

页数：10