Abstract: A drug that contains chlorogenic acid is effective in treating chordoma. When administered to a patient in need thereof, chlorogenic acid can significantly inhibit the proliferation of chordoma cells, reduce the expression level of multi-drug resistance gene MDR1 of chordoma cells, reverse the multi-drug resistance of chordoma cells, and effectively treat chordoma disease.

Abstract: Chlorogenic acid is used in the preparation of a medicine for preventing or treating pain. The pain can be cancer pain, skeletal muscle pain and the like. A medicine for preventing or treating pain, the medicine being a pharmaceutical preparation prepared by using chlorogenic acid as an active ingredient and adding pharmaceutically acceptable auxiliary materials. Chlorogenic acid may effectively relieve cancer pain and bone joint pain, and may replace analgesic drugs such as opioids and non-steroidal anti-inflammatory drugs in treatment.

Abstract: A drug that contains chlorogenic acid is effective in treating chordoma. When administered to a patient in need thereof, chlorogenic acid can significantly inhibit the proliferation of chordoma cells, reduce the expression level of multi-drug resistance gene MDR1 of chordoma cells, reverse the multi-drug resistance of chordoma cells, and effectively treat chordoma disease.

Abstract: A porous tantalum used for medical implantation is provided, which includes a foam structure with three-dimensional interconnecting pores and produced by: mixing a solution made by organic binder and dispersant and tantalum powder to form tantalum slurry, casting the tantalum slurry into a organic foam body through impregnation until the pores of the organic foam body are filled, drying the impregnated organic foam body with the tantalum slurry to remove the dispersant, degreasing the dried organic foam body to separate the organic binder and the organic foam body from the dried tantalum slurry in a protective environment of inert gas, vacuum sintering the dried tantalum slurry to obtain a porous sintered body, and vacuum annealing then treating the porous sintered body with normal post-treatments to obtain the porous tantalum. Accordingly, the porous tantalum has well-distributed interconnecting pores and sintering neck structures resulting in good mechanical properties, and especially good ductility.