International Journal of Medicinal Mushrooms

ISSN for PRINT: 1521-9437

For Online Access

Best Paper Award Selection - Editorial Board Site

2000, Volume2

Issue 2

84 pages

Issue price - $128.00

Nor Aripin Shamaan
Department of Biochemistry and Microbiology, Universiti Putra Malaysia, 43400 UPM Serdang, Malaysia

Z. Jarien
Department of Biochemistry, Universiti Kebangsaan Malaysia, Jalan Raja Muda Abdul Aziz, 50300 Kuala Lumpur, Malaysia

B. A. K. Khalid
Department of Medicine, Faculty of Medicine, Universiti Kebangsaan Malaysia, Jalan Raja Muda Abdul Aziz, 50300 Kuala Lumpur, Malaysia

A. G. M. Top
Division of Chemistry and Technology. Palm Oil Research Institute of Malaysia, Jalan Persiaran llmu, Bandar Baru Bangi. 43600 Bangi, Malaysia

W. Z. Wan Ngah
Department of Biochemistry, Universiti Kebangsaan Malaysia, Jalan Raja Muda Abdul Aziz, 50300 Kuala Lumpur, Malaysia

Ganoderma tsugae Murr. and vitamin E (α-tocopherol and γ-tocotrienol) were supplemented, alone and combined, to normal rats and rats chemically induced with cancer using a single injection of diethylnitrosamine followed by 0.2% (w/v) 2-acetylaminofluorene and partial hepatectomy. The rats were treated for 16 weeks before they were killed. The activities of alkaline phosphatase (ALP), γ-glutamyl transpeptidase (γGTP), glutathione S-transferase (GST), and uridyldiphosphate glucuronyltransferase (UDPGT) in plasma and subcellular fractions were determined. Blood glutathione levels were also determined. The activities of γGTP and placental GST were determined histochemically in the liver. The ratio of liver to body weight was significantly increased in the cancer-induced rats compared with normal controls. The ratios were unchanged after G. tsugae and vitamin E supplementation. Blood glutathione levels were significantly higher in the cancer-induced rats than normal controls. Supplementation of G. tsugae and vitamin E lowered blood glutathione levels to normal values. The enzyme activities in the subcellular fractions were higher in the cancer-induced rats than in normal controls. The activities were substantially attenuated upon G. tsugae and vitamin E supplementation. Attenuation of the enzyme-positive foci was also evident upon G. tsugae and vitamin E supplementation in the cancer-induced rats. G. tsugae supplementation that started 3 weeks after cancer induction resulted in a similar effect to G. tsugae supplementation started simultaneously with cancer induction.

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