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Immunomodulatory Effects of Dietary Supplementation With a Milk-Based Wolfberry Formulation in Healthy Elderly: A Randomized, Double-Blind, Placebo-Controlled Trial
Posted by Admin, Senior Editor in Gogi Berry (Wolfberry)
Authored by PubMed
Topics: Gogi Berry Wolfberry Lycium Barbarum

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Goji berries (Lycium barbarum, wolfberry) grow on an evergreen shrub found in temperate and subtropical regions in China, Mongolia and in the Himalayas in Tibet. They are in the nightshade (Solonaceae) family. Goji berries are usually found dried. They are shriveled red berries that look like red raisins. Goji berries are rich in antioxidants, particularly carotenoids such as Beta-carotene and zeaxanthin. One of zeaxanthin's key roles is to protect the retina of the eye by absorbing blue light and acting as an antioxidant. Goji berries have been used for 6,000 years by herbalists in China, Tibet and India to: protect the liver, help eyesight, improve sexual function and fertility, strengthen the legs, boost immune function, improve circulation, and to promote longevity.

Vidal K, Bucheli P, Gao Q, Moulin J, Shen LS, Wang J, Blum S, Benyacoub J. Immunomodulatory effects of dietary supplementation with a milk-based wolfberry formulation in healthy elderly: a randomized, double-blind, placebo-controlled trial. 1. Rejuvenation Res. 2012 Feb;15(1):89-97.
Wolfberry (fruit of Lycium barbarum) has been prized for many years in China for its immunomodulatory property and its high specific antioxidant content. However, clear clinical evidence demonstrating the effect of wolfberry dietary supplementation is still lacking. After our earlier report showing that a proprietary milk-based wolfberry formulation (Lacto-Wolfberry) enhances in vivo antigen-specific adaptive immune responses in aged mice, the present study aimed at demonstrating the effect of dietary Lacto-Wolfberry supplementation on immune functions in the elderly, especially vaccine response known to decline with aging. A 3-month randomized, double-blinded, placebo-controlled study was conducted on 150 healthy community-dwelling Chinese elderly (65-70 years old) supplemented with Lacto-Wolfberry or placebo (13.7 grams/day). Immune response to influenza vaccine was assessed in the study, along with inflammatory and physical status. No serious adverse reactions were reported during the trial, neither symptoms of influenza-like infection. No changes in body weight and blood pressure, blood chemistry or cells composition, as well as autoantibodies levels were observed. The subjects receiving Lacto-Wolfberry had significantly higher postvaccination serum influenza-specific immunoglobulin G levels and seroconversion rate, between days 30 and 90, compared with the placebo group. The postvaccination positive rate was greater in the Lacto-Wolfberry group compared to the placebo group, but did not reach statistical significance. Lacto-Wolfberry supplementation had no significant effect on delayed-type hypersensitivity response and inflammatory markers. In conclusion, long-term dietary supplementation with Lacto-Wolfberry in elderly subjects enhances their capacity to respond to antigenic challenge without overaffecting their immune system, supporting a contribution to reinforcing immune defense in this population.

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