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PSP

Clinical Trials in Hong Kong Yunzhi-PSP

PSP has been shown to manifest immunomodulatory and anticancer properties in both pre-clinical experiments and clinical trials. It has been
shown to reduce the side effects of radiotherapy and chemotherapy and has been used as an adjunct medical modality to conventional cancer treatment. Experiments suggest that PSP can boost the immune system and alleviate the symptoms of chemotherapy.[…]

Clinical trail China phase 1

Polysaccharide-peptide (PSP) is a protein bound polysaccharide isolated from the COV-1 strain of Yunzhi (Coriolous versicolor mushroom) and made from modern alcohol extraction techniques. Each capsule contains 0.34 grams of PSP. Experimental in-vitro and in-vivo studies have shown PSP inhibits the proliferation of cancer cells including P338 leukemia cells, S 180 cells, Ehrlich ascites, and stomach and lung cancer cells. It also inhibits the growth of some tumors such as the lymphatic tumor of human skin tissue cells. In addition, PSP affects the immune system of mice by stimulating the production of ?\interferons, increasing the phagocytic index and metabolic rate of the reticuloendothilial system and by raising the HC 50 (median hemolytic dose), IgG and PFC (plaque forming cell) values. Human in-vivo experiments have also shown PSP can modulate the immune system by helping to prevent and partly eliminate the side effects of radiation and chemotherapeutic agents used by cancer patients. […]

American Cancer Society

Available scientific evidence does not support claims that the raw mushroom itself is an effective anti-cancer agent in humans. But there is some scientific evidence that substances derived from parts of the mushroom may be useful against cancer. Clinical trials suggest that PSK may help people with certain types of cancer by increasing survival rates and lengthening periods of time without disease, without causing major side effects. PSK is commonly used with other cancer treatments in Japan. PSP and VPS have not been studied as thoroughly.[…]

Antimetastatic Effects of PSK (Krestin), a Protein-bound Polysaccharide Obtained from Basidiomycetes: An Overview

PSK is currently used as an immuno therapeutic agent for gastric colorectal, and lung cancers in Japan. It has virtually no adverse effects, and it can be administered P. over a long term. Consequently, its use need not be limited to the treatment of Cancer, and, as our previous paper suggested, it should in the future prove valuable as a general chemopreventive agent and, as this review shows, as anti metastatic agent. The principal mechanisms of PSK may act as an inhibitor of the motility, invasion, and progression of tumor cells, in addition to its role as an immunomodulator.[…]

Yun zhi (Cloud Mushroom) PSP Extract- West Nile Virus and Yun zhi PSP

Yun zhi polysaccharides have been used in the treatment of cancer and hepatitis in China and Japan for years. Patients who have used natural Yun zhi report increased strength and well-being, increased resistance to colds, flu, reduced fatigue and nausea, as well as regaining a normal appetite. Boosting the immune system through the regular use of natural Yun zhi could therefore provide increased protection against the threat of the West Nile Virus.{…}

The culture duration affects the immunomodulatory and anticancer effect of polysaccharopeptide derived from Coriolus versicolor

Flow cytometry analysis on cell cycle and cell death (apoptosis) of Molt 4 cells indicated that the anticancer mechanism of PSP is related to its ability to induce S-phase cell arrest and apoptosis, respectively. Together, these results suggest that monitor the harvest duration is critical for the quality control of polysaccharopeptide in the biotechnological industry.[…]

The Electrophretical Analysis of the Components of Polysaccharide-peptide (PSP)

The components of polysaccharide-peptide (PSP) are analysed by electrophoresis of cellulose acetate membrance and of polyacrylamide gel. The result shows that there are 2 kinds of glycoprotein and 2 kinds of polysaccharide. There are obvious differences between the numbers of components and the nature of electrophoresis of PSP and the polysaccharides of the fruit-bodies of Yun Zhi (CVP).[…]

Study on Anti-tumor Action of PSP

PSP at the doses of 500 or 1000ug/ml produced inhibitory effect on P388 luekemia cells by 79-96%. At the dose of 1000 or 2000ug/ml PSP caused the inhibition of [3H]UR or [3H]TdR incorporation into RNA and DNA in Ehrlich ascites carcinoma cells was found to be the inhibition rate 50-80% or 27-47% respectively.[…]

The Influence of PSP on the Behavior and Growth of the Fetus in Rats.

The data observed showed that PSP has no noticeable toxicity on fetus growth and on the behavioral performance of 1st and 2nd generation rats[…]

The Preliminary Appraisal of Polysaccharide Peptide (PSP) in Malignant and Non-malignant Diseases

Five cases of chronic gastrites and three cases of chronic active hepatitis showed remarkable improvement in symptoms and liver function test. HBsAg declined in two of three hepatitis patients.

So far no adverse drug reaction has been observed, there were no impairment of liver and renal functions after the long term administration of PSP even up to years.[…]