ACPA = anti­cyclic citrullinated peptide antibodies; ACR = American college of rheumatology; ACTB = actin beta; BMI = body mass index; CRP = C-reactive protein; CV = cardiovascular; DAPSA = disease activity in psoriatic arthritis; DAS28 = disease activity score 28; DMARDs = disease-modifying anti-rheumatic drugs; ESR = erythrocyte sedimentation rate; EULAR = European league against rheumatism; HAQ = health assessment questionnaire; HC = healthy controls; HDL = high density lipoprotein; HMW = high molecular weight; IGF = insulin-like growth factor; IL = interleukin; LDL = low density lipoprotein; LMW = low molecular weight; MAPK = mitogen-activated protein kinase; MMW = medium molecular weight; NF­κB = nuclear factor κB; NSAIDs = non-steroidal anti-inflammatory drugs; OA = osteoarthritis; PASI = psoriasis area severity index; PBMCs = peripheral blood mononuclear cells; PsA = psoriatic arthritis; RA = rheumatoid arthritis; RF = rheumatoid factor; SIRT­1 = silencing the gene for sirtuin; SNORD-25 = small nucleolar RNA = C/D Box 25; TGF-ß = activity and in transforming growth factor; TNF = tumor necrosis factor; VAS = visual analogue scale; VEGF = vascular endothelial growth factor; miRNA = microRNA