A controlled clinical trial to evaluate the effect of GanedenBC30 on immunological markers
Methods and Findings in Experimental and Clinical Pharmacology 2010, 32(2): 129-132
M. Kimmel, D. Keller, S. Farmer, and D.E. Warrino
GanedenBC30, a probiotic, has been shown to significantly increase T-cell production of TNF-α after ex vivo exposure to a strain of adenovirus (AdenoVI) or influenza A (H3N2 Texas strain [FluTex]). The current controlled study was designed to further evaluate the effect of GanedenBC30 on immunological marker levels following viral exposure. Ten healthy subjects' baseline immunological marker levels were analyzed. Subjects consumed 1 capsule/day of GanedenBC30 for 28 days and returned for post-treatment immunological marker evaluation. Subjects' baseline measurements served as their own control. All subjects completed the study with no adverse events; however, one subject was excluded from the final analysis based on a reasonable consideration as an outlier. CD3+CD69+ cells, IL-6, IL-8, interferon-γ (IFN-γ) and TNF-α levels were increased after exposure to AdenoVI and FluTex. IL-1β levels also increased after exposure to AdenoVI but were decreased after ex vivo exposure to FluTex. CD3+CD69+ cells increased significantly (P = 0.023) after exposure to both viral strains. Differences in IL-8 levels after FluTex exposure achieved statistical significance (P = 0.039) as did IFN-γ levels after AdenoVI exposure (P = 0.039). A regimen of one capsule per day containing 500 million CFU of GanedenBC30 may be a safe and effective option for enhancing the immunological response to common viral respiratory tract infections.