alexa [Immunomodulatory and antitumor properties of polysaccharide peptide (PSP)].
Immunology

Immunology

Journal of Clinical & Cellular Immunology

Author(s): Piotrowski J, Jdrzejewski T, Kozak W

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Abstract Modern medicine successfully uses multiple immunomodulators of natural origin, that can affect biological reactions and support body's natural defense mechanisms including antitumor activities. Among them is a group of products derived from fungi, including schizophyllan, lentinan, polysaccharide Krestin (PSK), and polysaccharidepeptide (PSP). Present paper is focused on polysaccharidepeptide, which due to the negligible toxicity and numerous benefits for health, is increasingly used in China and Japan as an adjuvant in the treatment of cancer. PSP is a protein-polisaccharide complex with a molecular weight 100 kDa derived from Coriolus versicolor mushroom. The results of numerous studies and clinical trials confirm that it inhibits the growth of cancer cells in in vitro and in vivo settings as well as decreases cancer treatment-related adverse side effects such as fatigue, loss of appetite, nausea, vomiting, and pain. PSP is able to restore weakened immune response observed in patients with cancer during chemotherapy. Its anti-tumor effects seemed to be mediated through immunomodulatory regulation. PSP stimulates cells of the immune system, induces synthesis of cytokines such as interleukin-1β (IL-1β), IL-6 and tumor necrosis factor-α (TNF-α), eicosanoids including prostaglandin E2 (PGE2), histamine, reactive oxygen species and nitrogen mediators. There is a growing interest in understanding the mechanisms of PSP action. Because of its unique properties and safety, PSP may become a widely used therapeutic agent in the near future.
This article was published in Postepy Hig Med Dosw (Online) and referenced in Journal of Clinical & Cellular Immunology

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