期刊
ANNALS OF THE RHEUMATIC DISEASES
卷 65, 期 11, 页码 1438-1443出版社
BMJ PUBLISHING GROUP
DOI: 10.1136/ard.2006.051979
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Background: Polymyalgia rheumatica (PMR) may create some difficulties in the differential diagnosis of elderly-onset rheumatoid arthritis (EORA) and of EORA with PMR-like onset (EORA/PMR). Aim: To investigate possible differences between three groups of patients, with regard to serum levels of inflammatory cytokines and steroidal hormones at baseline and after 1 month of treatment with glucocorticoids (prednisone 7.5-12.5 mg/day). Patients and methods: 14 patients with PMR, 15 with EORA and 14 with EORA/PMR, as well as 15 healthy, matched controls were analysed. Tumour necrosis factor alpha (TNF alpha), interleukin (IL)6, IL1 receptor antagonist (IL1Ra), cortisol, dehydroepiandrosterone sulphate (DHEAS) and 17-hydroxy-progesterone (PRG) were evaluated. Results: Serum levels of both TNF alpha and IL6 were significantly higher in all three groups of patients than in controls (p < 0.01). Serum IL6 levels were significantly higher in patients with both PMR and EORA/PMR than in patients with EORA (p < 0.05). IL1Ra serum levels were significantly higher in patients with EORA than in controls (p < 0.001) and in patients with PMR and EORA/PMR (p < 0.05). DHEAS was significantly lower in patients with EORA/PMR than in those with EORA (p < 0.05). PRG was significantly higher in all patient groups (p < 0.05). After glucocorticoid treatment, serum TNF alpha and IL6 levels significantly decreased in all patient groups; IL1Ra significantly increased in patients with PMR and in those with EORA/PMR; cortisol, DHEAS, and PRG significantly decreased in patients with PMR and in those with EORA/PMR (p < 0.05). Conclusions: Different cytokine and steroidal hormone patterns suggest that patients with PMR and those with EORA/PMR seem to be have a more intensive inflammatory reaction and are more efficient responders to glucocorticoid treatment than patients with EORA.
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