Article Publish Status: FREE
Abstract Title:

A water-soluble extract from cultured medium of Ganoderma lucidum (Reishi) mycelia attenuates the small intestinal injury induced by anti-cancer drugs.

Abstract Source:

Oncol Lett. 2010 Jan ;1(1):63-68. Epub 2010 Jan 1. PMID: 22966257

Abstract Author(s):

Naoki Kashimoto, Satomi Ishii, Yuki Myojin, Mitsuyasu Ushijima, Minoru Hayama, Hiromitsu Watanabe

Article Affiliation:

Naoki Kashimoto

Abstract:

The present study investigated whether a water-soluble extract from the culture medium of Ganoderma lucidum (Reishi) mycelia (MAK) is able to protect the small intestine against damage induced by anti-cancer drugs. Six-week-old male B6C3F1/Crlj mice were fed a basal diet (MF) alone or with various doses of MAK or Agarics blazei Murrill (AGA) beginning one week before treatment with the anti-cancer drugs. Mice were sacrificed 3.5 days after injection of the anti-cancer drug, the small intestine was removed and tissue specimens were examined for the regeneration of small intestinal crypts. In experiment 1, the number of regenerative crypts after the administration of 5-fluorouracil (5FU) intravenously (250 mg/kg) or intraperitoneally (250 or 500 mg/kg) was compared after treatment with MAK or AGA. MAK protected against 5FU-induced small intestinal injury whereas AGA did not. In experiment 2, we investigated the protective effect of MAK against small intestinal injury induced by the anti-cancer drugs: UFT (tegafur with uracil; 1,000 mg/kg, orally), cisplatin (CDDP; 12.5 and 25 mg/kg, intraperitoneally), cyclophosphamide (CPA; 250 mg/kg, orally) and gefitinib (Iressa; 2,000 and 4,000 mg/kg, orally). UFT and CDDP decreased the number of regenerative crypts, but treatment with MAK attenuated the extent of UFT- or CDDP-induced small intestinal injury. CPA or Iressa plus MAK up-regulated crypt regeneration. The present results indicate that MAK ameliorates the small intestinal injury caused by several anti-cancer drugs, suggesting that MAK is a potential preventive agent against this common adverse effect of chemotherapy.

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