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  • Title: Influence of albumin dialysis on pharmacokinetics of amphotericin B colloidal dispersion and amphotericin B lipid complex.
    Author: Weiler S, Vogelsinger H, Joannidis M, Dunzendorfer S, Bellmann R.
    Journal: Artif Organs; 2011 Jun; 35(6):667-71. PubMed ID: 21668831.
    Abstract:
    Albumin dialysis (AD) is a therapeutic option in severe cholestatic liver failure. However, it can significantly enhance drug elimination. Pharmacokinetic data on antimicrobial agents--in particular on antimycotics--administered under this clinical condition are very sparse. Therefore, amphotericin B (AMB) plasma concentrations were measured in two critically ill patients who were treated with AD because of severe cholestatic liver failure and were prescribed lipid formulated AMB--either AMB colloidal dispersion (ABCD) or AMB lipid complex (ABLC)--for suspected invasive fungal infection. AD was performed with the molecular adsorbent recirculating system (MARS). Lipid-associated and liberated AMB were separately quantified on and off AD. The clearance of the liberated AMB fraction was not essentially affected (ABLC) or moderately enhanced during AD by a factor of 2.5 (ABCD). The clearance of the lipid-formulated fraction was increased by a factor of 4 during AD (ABCD) or was similar (ABLC) on and off AD. Despite the fact that there was a four-fold higher clearance of the lipid-formulated fraction of ABCD, the clinically relevant area under the concentration time curve of the liberated AMB fraction was only moderately changed (by 37% in ABCD, 70% in ABLC) during AD. Thus, the effect of AD on lipid formulated AMB appears to be moderate. A daily dose of 5 mg/kg will probably lead to adequate plasma levels in patients on AD.
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