Abstract: A new use of immunosuppressant for treating or preventing MMp-medicated diseases is provided. The preferred immunosuppresants are tacrolimus, cyclosporing A or 33-epi-chloro-33-desoxyascomycin (pimecrolimus). Particularly, preferable MMP-mediated diseases are the diseases or conditions caused by gelatinase and/or collagenase, and/or inflammatory diseases concerned with gelatinase; such as arthritis (e.g., osteoarthritis, rheumatoid arthritis, etc.) cerebral diseases (e.g., stroke, etc.), tissue ulceration (e.g., corneal, epidermal and gastriculceration, etc.), abnormal wound healing, periodontal diseases, bone diseases (e.g., Paget's diseases, osteoporosis. etc.), tumor growth, tumor metastasis or invasion, HIV-infection, decubitus, decubitis ulcer, restenosis, epidermolysis bullosa, sepsis, septic shock, neoplasm, psoriasis, neovascularization and multiple sclerosis.