Display options
Share it on

Avicenna J Phytomed. 2019 Jan-Feb;9(1):54-61.

Skin inflammatory reactions to capsaicin in rheumatoid arthritis patients compared to healthy controls.

Avicenna journal of phytomedicine

Masoumeh Salari, Roshanak Salari, Houshang Rafatpanah, Yalda Ravanshad, Danial Zirachi, Maryam Sahebari

Affiliations

  1. Rheumatic Diseases Research Center, Mashhad University of Medical Sciences, Mashhad, Iran.
  2. Department of Traditional Persian Pharmacy, School of Persian and Complementary Medicine, Mashhad University of Medical Sciences, Mashhad, Iran.
  3. Allergy Research Center, Mashhad University of Medical Sciences, Mashhad, Iran.
  4. Clinical Research Unit, Mashhad University of Medical Sciences, Mashhad, Iran.

PMID: 30788278 PMCID: PMC6369324

Abstract

OBJECTIVE: Previous studies have examined the role of sensory nerves and neural mediators in symmetrical joint inflammation and autoimmunity in rheumatoid arthritis (RA). In this study, we sought to examine the association between capsaicin skin test and disease activity in RA patients.

MATERIALS AND METHODS: Eighty RA patients (case group) and 20 healthy volunteers were enrolled in this experiment. The subjects in case group were calcified to newly diagnosed patients and those previously diagnosed with RA. A topical solution of capsaicin (0.075%) was applied on the volar forearm during the skin test, and evaluations were done after 5, 10, and 20 min. The parameters recorded in capsaicin skin test were time to tingling, area of induration (cm

RESULTS: A faster capsaicin skin reaction was observed in healthy controls compared to the case group (p=0.02). Newly diagnosed and previously diagnosed RA patients were not significantly different in terms of reaction latency (p=0.06). The redness area after 15 (p=0.04) and 20 (p=0.001) min was significantly larger in previously diagnosed RA patients than in newly diagnosed ones. The ​​area of redness and time to tingling did not show any difference between active and inactive RA patients, but after 15 and 20 min, the area of redness was significantly greater in inactive RA patients compared to active RA patients (p=0.01 and p=0.03, respectively).

CONCLUSION: This study suggested that capsaicin skin test is not an efficient tool for the examination of synovial inflammation and disease activity in RA.

Keywords: Capsaicin; Inflammation; Rheumatoid arthritis

Conflict of interest statement

None declared.

References

  1. Science. 2000 Apr 14;288(5464):306-13 - PubMed
  2. Science. 2003 May 23;300(5623):1284-8 - PubMed
  3. Ann Rheum Dis. 1992 Mar;51(3):313-7 - PubMed
  4. Neuroscience. 2004;123(2):337-47 - PubMed
  5. J Cell Physiol. 2004 Nov;201(2):167-80 - PubMed
  6. Arthritis Rheum. 1990 Jan;33(1):87-90 - PubMed
  7. Life Sci. 2007 Apr 3;80(17):1592-7 - PubMed
  8. Biochem Biophys Res Commun. 2007 Aug 10;359(4):884-8 - PubMed
  9. J Neurochem. 2008 May;105(4):1212-22 - PubMed
  10. Clin J Pain. 2008 Feb;24(2):142-54 - PubMed
  11. Pancreas. 2008 May;36(4):394-401 - PubMed
  12. J Neurophysiol. 1991 Jul;66(1):228-46 - PubMed
  13. Rheumatol Int. 2013 Oct;33(10):2665-70 - PubMed
  14. Ann Rheum Dis. 2015 Jan;74(1):252-9 - PubMed
  15. Curr Osteoporos Rep. 2015 Aug;13(4):225-34 - PubMed
  16. Arthritis Res Ther. 2016 Jan 08;18:6 - PubMed
  17. Mol Neurobiol. 2017 Jul;54(5):3205-3218 - PubMed
  18. Inflamm Res. 2016 Sep;65(9):725-36 - PubMed
  19. Lancet. 2017 Jun 10;389(10086):2328-2337 - PubMed
  20. Biomed Pharmacother. 2017 Dec;96:1501-1512 - PubMed
  21. Neurosci Lett. 1995 Jul 7;193(3):205-7 - PubMed
  22. J Rheumatol. 1993 Apr;20(4):714-7 - PubMed
  23. Ann Rheum Dis. 1995 Apr;54(4):251-5 - PubMed
  24. Inflamm Res. 1995 Nov;44(11):486-90 - PubMed
  25. Am J Med. 1996 Jul 31;101(1A):6S-18S - PubMed
  26. Pain. 1997 Jun;71(2):179-86 - PubMed

Publication Types