Efficacy and pharmacodynamics of herbal medicine in patients with metabolic phenotype of osteoarthritis

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High prevalence of the metabolic phenotype of osteoarthritis (MPOA) and unsatisfactory methods of its treatment necessitate the development of novel therapeutic approaches for this phenotype of OA. Turmeric preparations have a wide range of biological activity; their use in patients with MPOA can be effective and reduce the drug burden. In the present paper, we review our own published research findings on the effectiveness and pharmacodynamics of turmeric preparations in patients with MPOA. In the two studies, we evaluated the effects of two curcumin-containing parapharmaceuticals: Epigenorm Antivir (EA) and Curcumin. Forty-one women with MFOA were included in both studies. Twenty-three patients received EA at a daily dose of 1000 mg for 12 weeks, and 18 patients received curcumin from Evalar at a dose of 1000 mg for 8 weeks. The endpoints for both studies were VAS pain, dysfunction and other symptoms of OA measured using the KOOS scale. After 12 weeks of EA treatment, there was a 2.5-fold decrease pain levels. The decrease in pain was associated with an improvement in the patient’s daily and sports activities and quality of life. These effect sizes were classified as moderate to large according to Cohen. No adverse events were observed during the period of taking EA. Clinical improvement was associated with a decrease in the content of MS individual components: low-density lipoprotein cholesterol and triglycerides. The treatment caused a decrease in the level of systemic inflammation, as evidenced by a decrease in the concentration of TNFα, histamine, IL-18, C-reactive protein, and neopterin. The concentrations of IL-10 and adiponectin increased after treatment. In another study, treatment with curcumin for 4 weeks had an analgesic effect, improved measures of function and quality of life. Clinical improvement was associated with the reductions in serum levels of a number of proinflammatory cytokines, C-reactive protein, and lipids. Thus, the results of the pilot studies evaluating efficacy, safety, and pharmacodynamics of parapharmaceuticals EA and Curcumin in patients with MFOA indicate pleiotropic effects of the interventions. The findings provide a rationale for conducting larger, controlled, blind, randomized clinical trials.