Abstract
Rhodiola rosea, a medicinal plant with demonstrated adaptogenic properties, has recently been reported to contain active compounds with antimicrobial activity. The goal of this study was to measure the antiviral and antibacterial properties of the bioactive metabolites of Rhodiola rosea in the serum of experienced marathon runners following supplementation. Marathon runners, randomly divided into two groups, ingested 600 mg/day of Rhodiola rosea (n = 24, 6 female, 18 male) or placebo (n = 24, 7 females, 17 males) for 30 days prior to, the day of, and 7 days post-marathon. Blood serum samples were collected the day before, 15 min post-, and 1.5 h post-marathon. Serum from Rhodiola rosea-supplemented runners collected after marathon running did not attenuate the marathon-induced susceptibility of HeLa cells to killing by vesicular stomatitis virus. However, the use of Rhodiola rosea induced antiviral activity at early times post-infection by delaying an exercise-dependent increase in virus replication (P = 0.013 compared to placebo). Serum from both groups collected 15 min post-marathon significantly promoted the growth of Escherichia coli in culture as compared to serum collected the day before the marathon (P = 0.003, all subjects). Furthermore, the serum from subjects ingesting Rhodiola rosea did not display antibacterial properties at any time point as indicated by a lack of group differences immediately (P = 0.785) or 1.5 h (P = 0.633) post-marathon. These results indicate that bioactive compounds in the serum of subjects ingesting Rhodiola rosea may exert protective effects against virus replication following intense and prolonged exercise by inducing antiviral activity.
Highlights
Rhodiola rosea is a perennial herbaceous plant in the Crassulaceae family found at high altitudes in the Arctic and mountainous regions throughout Europe and Asia [1]
Antiviral Effects of Rhodiola rosea Supplementation In order to measure the antiviral activity in serum from Rhodiola rosea and placebo supplemented individuals, we exposed HeLa cells to serum from marathon runners collected pre- and postmarathon and evaluated the ability of serum samples to protect cells against killing by Vesicular stomatitis virus (VSV)
Our results indicate that Rhodiola rosea supplementation has the potential to protect athletes from exercise-induced susceptibility to infections by attenuating virus replication
Summary
Rhodiola rosea ( known as golden root, rose root, Arctic root) is a perennial herbaceous plant in the Crassulaceae family found at high altitudes in the Arctic and mountainous regions throughout Europe and Asia [1]. Rhodiola rosea and polyphenolic bioactive compounds from the plant, such as rosavin, salidroside, Anti-microbial effects of Rhodiola rosea syringin, triandrin, and tyrosol, have been reported to exert beneficial effects against several pathogens. Studies have shown that Rhodiola inhibits dengue virus multiplication by regulating the innate immune response genes, RIG-I, MDA5, and ISG, to promote an effective antiviral immune response [7]. Taken together, these data highlight the antiviral capacity of Rhodiola rosea and its potential as a therapeutic strategy against a variety of infectious diseases
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