title: Sodium etidronate in the treatment of Paget's disease of bone. A study of long-term results.
abstract: Subjects (109) with symptomatic Paget's disease of bone were treated with 5, 10, or 20 mg of sodium etidronate (EHDP)/kg body weight - day for 6 to 24 months. Significant decreases in serum alkaline phosphatase and urinary hydroxyproline were noted after 6 months of therapy; no significant further improvement resulted after prolonged therapy. Some patients maintained biochemical remission after withdrawal of EHDP but others showed a relapse, related primarily to the pretreatment severity. Clinical improvement was noted in 61% of the patients. Similar findings were seen after a second course of EHDP. No side-effects were noted in patients treated with 5 mg of EHDP/kg body weight - day. In patients treated with 10 or 20 mg of EHDP/kg body weight - day, severe diarrhea, bone pain, and nontraumatic fractures were noted in 3, 13, and 12 patients respectively. Quantitative histomorphometry showed mineralization delay in patients receiving 10 or 20 mg of EHDP/kg body weight - day but not in those receiving 5 mg/kg body weight - day. Five milligrams of EHDP/kg body weight - day was effective and appears to be safer than the higher doses.
mesh_terms: D000328:Adult; D000368:Aged; D000469:Alkaline Phosphatase / Q000097:blood; D001857:Bone Matrix / Q000473:pathology; D001842:Bone and Bones / Q000473:pathology; D002986:Clinical Trials as Topic; D012968:Etidronic Acid / Q000008:administration & dosage / Q000009:adverse effects / Q000627:therapeutic use*; D005260:Female; D050723:Fractures, Bone / Q000139:chemically induced; D005767:Gastrointestinal Diseases / Q000139:chemically induced; D006801:Humans; D006909:Hydroxyproline / Q000652:urine; D008297:Male; D008875:Middle Aged; D010001:Osteitis Deformans / Q000188:drug therapy* / Q000378:metabolism; D010006:Osteoblasts / Q000473:pathology; D010010:Osteoclasts / Q000473:pathology; D010146:Pain / Q000139:chemically induced; D012075:Remission, Spontaneous; D012306:Risk; D013997:Time Factors
chemical_list: D000469:Alkaline Phosphatase; D012968:Etidronic Acid; D006909:Hydroxyproline