The present invention is applicable to the technical field of
plant extraction and separation. Provided is a
polysaccharide compound GLP-4 that has a clear molecular structure and has the effects of treating emphysema and
pulmonary fibrosis and resisting tumors, which
polysaccharide compound has a molecular formula of: (C162H270O135)n.
Ganoderma is subjected to high-temperature and high-pressure extraction using an alkali solution, the resulting
medicine residues are extracted, and then separation is performed by
column chromatography to obtain the
polysaccharide compound. The polysaccharide compound has a good water
solubility, is easily absorbed by a
human body, has better effects than
pirfenidone in terms of the treatment of emphysema and
pulmonary fibrosis, and also has
efficacy in patients with advanced cancers (patients who have lost surgical condition, have a survival time of only three to six months, and still have
chemotherapy condition). Especially when being used in combination with a chemotherapeutic
drug, the polysaccharide compound can eliminate the toxic side effects caused by the chemotherapeutic
drug in the
human body, and can be used for controlling and reducing a tumor
mass, and reducing and eliminating
tumor cells, which effects are all supported by corresponding experimental data.