Visceral obesity (secretion of inflammatory cytokines, chemokines, adipokines) |
Activation of the innate immune cells by pathogen-associated molecular patterns and damage-associated molecular patterns |
Posttranslational alterations (at the level of micro-RNA) |
Latent infections (cytomegalovirus, helicobacter pylori) |
Cell senescence (a senescence-associated secretory phenotype: intracellular signaling loops and inflammatory cascade involving the nuclear factor kappa-B, IL-1α, transforming growth factor-betta and IL-6 pathway) |
Mitochondrial dysfunction (oxydative-stress mediated inflammation via activation of nod-like receptor 3 inflammasome) |
Depression, chronic stress (via activation of the hypothalamus-hypophysis-adrenal stress axis) |
Cell apoptosis-transformation into necrotic cells |
Impaired autophagy (impaired clearance of apoptotic cells) |
Comorbidities (tissue infiltration with inflammatory cells, paracrine cell activation) |
Cell surfice receptors density and activation alterations |
Transcription factors activation in inflammatory response pathways (nuclear factor kappa-B, activation protein-1) |
Neuro-endocrine alterations |
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Dysregulation of paroxisome proliferator activated receptors (nuclear hormone receptors activated by fatty acids and oic osano ides) |
Renal function decline |
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Dysregulation of pro-resolving lipid mediators (lipoxins, resolvins, maresins) |
Altered permeability of the gastro-intestinal system |
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M1 (pro-inflammatory) type macrophages |
Alterations in gut microbiome |
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Insufficient inflammation resolution |
Genetic predisposition |
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An imbalance between pro-inflammatory TNF-α, IL-6, IL-18, IL-1 cytokine family (IL-1α, IL-1β, IL-18, IL-33, IL-36α, IL-36β, and IL-36γ), IL-17A, IL-22, and anti-inflammatory cytokines IL-10, IL-37, transforming growth factor-betta, sTNFR, sIL-1R |