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  • Title: Clinical pharmacokinetics of ibopamine on different diseases and conditions.
    Author: Ventresca GP, Lodola E.
    Journal: Arzneimittelforschung; 1988 Aug; 38(8):1175-80. PubMed ID: 2904270.
    Abstract:
    The pharmacokinetics of ibopamine was studied after single dose and after single and multiple dosing. The studies after single dose were conducted in normal subjects (NS) and in patients with congestive heart failure (CHF) of NYHA functional classes II, III and IV, in patients with chronic renal impairment (CRI), with hepatic cirrhosis (HC) and in elderly patients. Furthermore, ibopamine-quinidine pharmacokinetic interaction and the effects of food on plasma kinetics were evaluated in NS. The studies after single and multiple dosing were conducted in CHF patients. The effects were also studied of chronic oral ibopamine treatment on the pharmacokinetics of digoxin after chronic oral dosing and of treatment with digoxin on ibopamine pharmacokinetics. Ibopamine appears to be rapidly and extensively absorbed, quickly hydrolyzed to epinine and then excreted mainly through the kidneys either after being sulpho-conjugated or oxidized to homovanillic acid and 3,4-dihydroxyphenylacetic acid. Epinine is thought to be the therapeutically active moiety of the drug. In patients with CHF epinine pharmacokinetics does not depend on the NYHA functional class, and it falls within the same area as that in NS; the pharmacokinetics of epinine does not vary during the repeated administration of the drug for one month. In patients with CHF the pharmacokinetic data do not suggest the need to adjust the dose according to the NYHA functional class. In patients with CRI the pharmacokinetics of epinine does not vary with the degree of renal impairment. In HC patients AUC and Cmax of epinine seem to be higher than in NS; in these patients a higher amount of epinine is excreted into urine.(ABSTRACT TRUNCATED AT 250 WORDS)
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