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Tytuł oryginału: Elevated plasma endothelin-1 levels and vascular dysregulation in patients with rheumatoid arthritis.
Autorzy: Pache Mona, Schwarz Hans A., Kaiser Hedwig J., West Peter, Kl”ti Manuel, Dubler Barbara, Flammer Josef
Źródło: Med. Sci. Monitor 2002: 8 (9) s.CR616-CR619, il., bibliogr. 15 poz.
Sygnatura GBL: 313,278

Hasła klasyfikacyjne GBL:
  • reumatologia

    Typ dokumentu:
  • tytuł obcojęzyczny
  • praca kliniczna

    Wskaźnik treści:
  • ludzie
  • dorośli 19-44 r.ż.
  • dorośli 45-64 r.ż.
  • dorośli = 65 r.ż.

    Streszczenie angielskie: Background: Contradictory results on plasma endothelin-1 (ET-1) levels in patietns with rheumatoid arthritis have been reported in previous studies. We therefore evaluated whether plasma ET-1 levels in patients with rheumatoid arthritis differ from those of normal controls. Since systemically increased levels of ET-1 are known to occur in tandem with primary or secondary vascular dysregulation, we also measured peripheral blood flow by means of nailfold capillaroscopy combined with a cold provocation test. Material/methods: We measured plasma levels of ET-1 in twelve patients with different stages of rheumatoid arthritis by means of a specific radioimmunoassay, and compared ET-1 values to those of healthy controls. Capillary blood flow and the frequency of cold-induced vasospasm were studied in parallel, using nailfold capillaroscopy combined with a cold provocation test. Results: Plasma ET-1 levels were significantly increased in patietns with rheumatoid arthritis (p = 0.01) when compared to controls (2.38 ń 0.95 pg/ml vs. 1.53 ń 0.38 pg/ml). Capillary blood flow was reduced when compared to our own normal values, and a cold-induced blood standstill was seen in 58 p.c. of the patients. Conclusion: Patients with rheumatoid arthritis exhibit significantly elevated levels of ET-1, which may be associated with the symptoms of vascular dyregulation observed in nailfold capillaroscopy. Even though the clinical conclusions should be drawn from this study with caution, additional therapy with calcium channel blockers or, possibly in the future, with ET-1 receptor blockers, may be benficial in patients with rheumatoid arthritis.

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