A randomized double blinded placebo controlled clinical trial for the evaluation of green coffee extract on immune health in healthy adults

Background: The immune system functions to protect the host from a broad array of infectious diseases. Here, we evaluated the in vitro immunomodulatory effects of green coffee extract (GCE), and conducted a double-blinded, randomized and placebo-controlled trial among apparently healthy individuals....

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Bibliographic Details
Published in:Journal of Traditional and Complementary Medicine 2022-09, Vol.12 (5), p.455-465
Main Authors: Narayanaperumal, Jeyaparthasarathy, D'souza, Avin, Miriyala, Amarnath, Sharma, Bhavna, Gopal, Ganesh
Format: Article
Language:English
Subjects:
Cell mediated immune response
Green coffee extract
Humoral immune response
Immunity
Inflammation
Innate immune response
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Summary:Background: The immune system functions to protect the host from a broad array of infectious diseases. Here, we evaluated the in vitro immunomodulatory effects of green coffee extract (GCE), and conducted a double-blinded, randomized and placebo-controlled trial among apparently healthy individuals. Methods: We determined the levels and functions of inflammatory and immune markers viz., phospho-NF-κB p65 ser536, chemotaxis, phagocytosis, TH1/TH2 cytokines and IgG production. We also evaluated several immunological markers such as total leukocyte counts, differential leukocyte counts, NK cell activity, CD4/CD8 ratio, serum immunoglobulin, C-reactive protein (CRP) and pro-inflammatory cytokines (IL-6 and TNF-α). Results and conclusion: GCE significantly inhibited LPS-induced NF-κB p65 ser536 phosphorylation, MCP-1-induced chemotaxis and significantly enhanced phagocytosis and IgG production. In addition, GCE modulated PMA/PHA-induced TH1/TH2 cytokine production. Clinical investigations suggested that the expression of CD56 and CD16 was markedly augmented on NK cells following GCE treatment. GCE significantly enhanced IgA production before and after influenza vaccination. Similarly, IL-6, TNF-α and CRP levels were significantly inhibited by GCE. Together, GCE confers several salubrious immunomodulatory effects at different levels attributing to optimal functioning of immune responses in the host. Taxonomy: Cell biology, Clinical study, Clinical Trial.
ISSN:2225-4110
2225-4110
DOI:10.1016/j.jtcme.2022.01.007