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  • Title: A single infusion of the bisphosphonate AHPrBP (APD) as treatment of Paget's disease of bone.
    Author: Thiébaud D, Jaeger P, Gobelet C, Jacquet AF, Burckhardt P.
    Journal: Am J Med; 1988 Aug; 85(2):207-12. PubMed ID: 3261129.
    Abstract:
    PURPOSE: Disabling pain, skeletal deformity, or risk of joint involvement characterize Paget's disease of bone. Because the disease often affects the elderly, for whom compliance is a problem, we investigated therapy with a single intravenous infusion of amino-hydroxypropylidene bisphosphonate (AHPrBP, previously APD). PATIENTS AND METHODS: Eleven patients with mild but symptomatic Paget's disease and one patient with very severe disease were treated with AHPrBP administered as a single intravenous infusion of 60 mg over 24 hours. Follow-up with clinical and biochemical evaluations was performed over six months for all patients, and over one year for seven patients. RESULTS: Clinical improvement and normalization of biochemical parameters were observed in all patients except one with extremely severe disease. On average, plasma alkaline phosphatase activity fell progressively and significantly from 256 +/- 29 U/liter (mean +/- SEM) to 97 +/- 6 U/liter after six months, and to 102 +/- 11 U/liter after one year (normal: less than 120 U/liter). Urinary excretion of hydroxyproline decreased within seven days to normal (from 4.3 +/- 0.5 mumol/liter of glomerular filtrate [lGF] to 1.7 +/- 0.2 mumol/lGF; normal: 2.2 mumol/lGF). Thereafter, it remained within the normal range until one year (1.8 +/- 0.2 mumol/lGF after six months and 1.9 +/- 0.3 mumol/lGF after one year). Side effects were negligible. Two patients noted only a transient increase in body temperature. When bone scintigraphy was repeated after six months, it revealed a marked decrease of the activity of the disease. CONCLUSION: Due to the important and sustained inhibition of bone resorption induced by AHPrBP, a single infusion of 60 mg of the bisphosphonate leads to a rapid decline in activity and a long-standing remission of moderate Paget's disease, without significant side effects.
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