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Avicenna J Phytomed. 2016 Jan-Feb;6(1):34-43.

Effects of Nigella sativa oil extract on inflammatory cytokine response and oxidative stress status in patients with rheumatoid arthritis: a randomized, double-blind, placebo-controlled clinical trial.

Author information

1
Department of Nutrition, Tabriz University of Medical Sciences, Tabriz, Iran.
2
Department of Internal Medicine, Tabriz University of Medical Sciences, Tabriz, Iran.
3
Department of Agriculture, Barij Essence Pharmaceutical Company , Kashan, Iran.

Abstract

OBJECTIVE:

Nigella sativa is a medicinal plant that has long been used in traditional medicine for treating various conditions. Numerous animal studies provided evidences that the seed may elicit a broad anti-inflammatory/anti-oxidant activity. The aim of the present clinical trial was to evaluate anti-inflammatory and antioxidant properties of Nigella sativa oil in patients with rheumatoid arthritis (RA).

MATERIALS AND METHODS:

Forty-two patients with RA were assigned into two groups in this randomized, double blind, placebo-controlled clinical trial. Subjects in intervention group received two capsules, 500 mg each, of Nigella sativa oil, each day for 8 weeks. The other group consumed two capsules as placebo per day for the same period of time. Serum TNF-α, IL-10, and whole blood levels of oxidative stress parameters were measured at baseline and end of the trial.

RESULTS:

The serum level of IL-10 was increased in the Nigella sativa group (p<0.01). Moreover, treatment with Nigella sativa led to significant reduction of serum MDA and NO compared with baseline (p<0.05). There were no significant differences in the TNF-α, SOD, catalase, and TAS values between or within the groups, before and after the intervention (p>0.05).

CONCLUSION:

This study indicates that Nigella sativa could improve inflammation and reduce oxidative stress in patients with RA. It is suggested that Nigella sativa may be a beneficial adjunct therapy in this population of patients.

KEYWORDS:

IL-10; Nigella sativa; Oxidative stress; Rheumatoid arthritis; TNF-α

PMID:
27247920
PMCID:
PMC4884216

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