Cited by 66Seaweed-derived Bioactive CompoundsImmunotherapy and Immune ResponsesT-cell and B-cell Immunology

Enhancement of Human Adaptive Immune Responses by Administration of a High-Molecular-Weight Polysaccharide Extract from the Cyanobacterium Arthrospira platensis

Løbner, Morten, Walsted, Anette, Larsen, Rune, Bendtzen, Klaus, Nielsen, Claus Henrik·2008·Journal of Medicinal Food

Abstract

The effect of consumption of Immulina, a high-molecular-weight polysaccharide extract from the cyanobacterium Arthrospira platensis, on adaptive immune responses was investigated by evaluation of changes in leukocyte responsiveness to two foreign recall antigens, Candida albicans (CA) and tetanus toxoid (TT), in vitro. Consumption of Immulina by 11 healthy male volunteers caused an immediate, but temporary, increase of CA-induced CD4+ T-helper (Th) cell proliferation (P < .02). TT-induced Th cell proliferation was increased in individuals over 50 years of age (P < .05) and correlated with age (P < .02). Consumption for 8 days enhanced the CA-induced B cell proliferation (P < .02), but after 56 days a diminution was seen (P < .03). The CA-elicited production of the Th1 cytokines tumor necrosis factor (TNF)-alpha, interleukin (IL)-2, and interferon (IFN)-gamma was increased after Immunlina administration for 3 days (P < .001, < .03, and < .007, respectively), and increased IL-2 production persisted after 56 days (P < .004). The TNF-alpha, IFN-gamma, and IL-6 responses to TT were enhanced after 8 and 14 days (P < .002-.05), while IL-5 responses increased significantly within 3 days (P < .04) and fell below baseline levels after 14 days (P < .008). Conversely, consumption for 3 days inhibited the IL-4 responses to both CA and TT (P < .008 and P < .03, respectively). No effects on IL-10 responses were observed. Upon addition to normal mononuclear cells in vitro, Immulina elicited strong TNF-alpha, IL-1beta, and IL-6 responses, indicating that it acts by inducing a pro-inflammatory state. Taken together, the data suggest that Immulina causes an age-dependent, temporary enhancement of adaptive immune responses.

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Crossref · 10.1089/jmf.2007.564

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Authors
Løbner, M., Walsted, A., Larsen, R., Bendtzen, K., & Nielsen, C. H.
Affiliations
  • University of Copenhagen (DK)
  • Copenhagen University Hospital (DK)
  • Department of Clinical Immunology, Frederiksborg General Hospital, Hillerod, Denmark
  • Rigshospitalet (DK)
Venue
Journal of Medicinal Food
Published
2008-06
Volume
11
Issue
2
Pages
313-322
ISSN
  • 1096-620X (ISSN-L)
  • 1557-7600
OpenAlex
W2078088079
Cited by
66
References
28
Citations by year
2026: 1 · 2025: 6 · 2024: 4 · 2023: 6 · 2022: 6 · 2021: 3 · 2020: 8 · 2019: 4 · 2018: 4 · 2017: 5 · 2015: 5 · 2014: 3 · 2013: 3 · 2012: 3
FWCI
2.52
Type
journal article
Language
en
Open access
closed
Locations
  • Journal of Medicinal Food (publishedVersion)
  • PubMed (publishedVersion)
  • Research at the University of Copenhagen (University of Copenhagen) (publishedVersion)
  • University of Southern Denmark Research Portal (University of Southern Denmark) (submittedVersion)
Topics
  • Life Sciences › Agricultural and Biological Sciences › Aquatic Science › Seaweed-derived Bioactive Compounds
  • Life Sciences › Immunology and Microbiology › Immunology › Immunotherapy and Immune Responses
  • Life Sciences › Immunology and Microbiology › Immunology › T-cell and B-cell Immunology
Keywords
Spirulina platensis, adaptive immune response, B cell proliferation, Th1 cytokines, Candida albicans, tetanus toxoid, dietary supplementation, inflammatory cytokines
MeSH terms
Adult, Aged, Aging, Antigens, Fungal, Candida albicans, T-Lymphocytes, Helper-Inducer, Humans, Immunity, Cellular, Interferon-gamma, Interleukin-1, Interleukin-2, Lymphocyte Activation, Male, Middle Aged, Polysaccharides, Polysaccharides, Bacterial, Tetanus Toxoid, Tumor Necrosis Factor-alpha, CD4-Positive T-Lymphocytes, CD4 Lymphocyte Count, Dietary Supplements, Spirulina

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