Cited by 59Spaceflight effects on biologyFungal Biology and ApplicationsImmune responses and vaccinations

Active hexose correlated compound enhances resistance to Klebsiella pneumoniae infection in mice in the hindlimb-unloading model of spaceflight conditions

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Aviles, Hernan, Belay, Tesfaye, Fountain, Kimberly, Vance, Monique, Sun, Buxiang, Sonnenfeld, Gerald·2003·Journal of Applied Physiology

Abstract

Previous studies have demonstrated that resistance to infection is decreased in Swiss Webster female mice maintained in the hindlimb-unloading model (Aviles H, Belay T, Fountain K, Vance M, and Sonnenfeld G. J Appl Physiol 95: 73-80, 2003; Belay T, Aviles H, Vance M, Fountain K, and Sonnenfeld G. J Allergy Clin Immunol 110: 262-268, 2002). This is a model of some of the aspects of spaceflight conditions, including lack of load bearing on hindlimbs and a fluid shift to the head. Active hexose correlated compound (AHCC), extracted from Basidiomycete mushrooms, has been shown to induce enhancement of immune responses, including enhanced natural killer activity. In the present study, AHCC was orally administered to mice to determine whether the treatment could decrease immunosuppression and mortality of mice maintained in the hindlimb-unloaded model and infected with Klebsiella pneumoniae. The results of the present study showed that administration of AHCC by gavage for 1 wk (1 g/kg body wt) before suspension and throughout the 10-day suspension period yielded significant beneficial effects for the hindlimb-unloaded group, including 1). decreased mortality, 2). increased time to death, and 3). increased ability to clear bacteria. The results suggest that AHCC can decrease the deleterious effects of the hindlimb-unloading model on immunity and resistance to infection.

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Crossref · 10.1152/japplphysiol.00259.2003

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Authors
Aviles, H., Belay, T., Fountain, K., Vance, M., Sun, B., & Sonnenfeld, G.
Venue
Journal of Applied Physiology
Published
2003-08
Volume
95
Issue
2
Pages
491-496
ISSN
  • 0161-7567 (ISSN-L)
  • 8750-7587
  • 1522-1601
OpenAlex
W2110501148
Cited by
59
References
49
Citations by year
2026: 1 · 2025: 2 · 2024: 1 · 2023: 1 · 2022: 2 · 2021: 1 · 2019: 5 · 2018: 2 · 2017: 2 · 2016: 3 · 2015: 4 · 2014: 6 · 2013: 3 · 2012: 1
FWCI
1.53
Type
journal article
Language
en
Open access
Licence
cc-by
Locations
  • Journal of Applied Physiology (publishedVersion, cc-by)
  • PubMed (publishedVersion)
Funders
National Center for Research Resources (5G12 RR/AI 03034)
Topics
  • Health Sciences › Medicine › Physiology › Spaceflight effects on biology
  • Health Sciences › Medicine › Pharmacology › Fungal Biology and Applications
  • Life Sciences › Immunology and Microbiology › Immunology › Immune responses and vaccinations
Keywords
AHCC, Klebsiella pneumoniae infection, hindlimb unloading, immunosuppression, bacterial clearance, mortality, mushroom extracts, immune enhancement, fluid shifts, microgravity
MeSH terms
Administration, Oral, Animals, Antibodies, Bacterial, Disease Susceptibility, Female, Hexoses, Immunoglobulin G, Immunosuppression Therapy, Klebsiella Infections, Klebsiella pneumoniae, Lethal Dose 50, Polysaccharides, Space Flight, Colony Count, Microbial, Survival Analysis, Hindlimb Suspension, Mice

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