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Mohammadi M, Anani sarab G, Ghaini M H, Yaraee R. Effect of hydroalcoholic extract of Ferula assa-foetida L. resin on rheumatoid arthritis symptoms in the collagen-induced animal model. Journals of Birjand University of Medical Sciences 2020; 27 (1) :33-43
URL: http://journal.bums.ac.ir/article-1-2706-en.html

Background and Aim: Rheumatoid arthritis (RA) is a chronic, autoimmune inflammatory disease that affects synovial tissue. According to potential side effects of current treatments, interest in using complementary and alternative medicine(CAM) has reappeared.The purpose of this study was to evaluate the effect of extract of  Ferula assa-foetida L. resin on the severity of rheumatoid arthritis symptoms which is caused by collagen.
Materials and Methods: In this experimental study, 30 female Wistar rats were randomly divided into 6 groups: healthy control, CIA, Dexamethasone receiving group to amount 1 mg/kg, receiving group to 100 mg/kg concentration of extract of asafoetida resin, receiving group to 300 mg/kg concentration of extract of asafoetida resin and receiving group to 100 mg/kg extract and dexamethasone (mixed group). Rheumatoid arthritis was induced by the administration of collagen type 2 and adjuvant. The clinical evaluation started and the severity of the symptoms of rheumatoid arthritis, by examination and standard scoring was performed.
Results: From the thirteenth day, Symptoms of the disease appeared and from the fourteenth day, there was a significant difference between the control and CIA groups in the clinical symptom score of arthritis. Among intervention groups, receiving group to 100 mg/kg concentration of extract earlier and more cause to decreased severity of symptoms. So on the 28th day, disease severity in the control group was 13.4 and in the treatment group with a concentration of 100 mg/kg extracts of Ferula assa-foetida L. resin was 9.6.
Conclusion: Hydroalcoholic extract of asafoetida resin, its could reduce the severity of symptoms of ankle RA and in the dose of 100 mg/kg cause to mitigate the symptoms of apparent swelling and inflammation.