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Seventh International Congress on Drug Therapy in HIV InfectionGlasgow, UK - 14-17 November 2004 |
Int Cong Drug Therapy HIV 2004 Nov 14-18;7:Abstract No. PL10.2
Jürgen Rockstroh
Department of Medicine I, University of Bonn, Bonn, Germany
Meanwhile the benefits of highly active antiretroviral therapy (HAART) with regard to both survival and quality of life have been demonstrated beyond any doubts. Yet, HAART-associated toxicity has evolved as the main reason to discontinue or modify antiretroviral therapy. Hepatotoxicity appears to be of particular importance in this context as it can occur with nearly any antiretroviral regimen currently in use (see table). Most remarkably, longitudinal surveys have not only reported an increased incidence of hepatic injury in HAART-treated patients (especially in the hepatitis coinfected patient) but also identified life-threatening hepatotoxic events and end-stage liver disease in patients on antiretroviral treatment. Since rational alternatives to HAART are currently not available to control HIV infection, understanding the pathophysiology as well as a profound knowledge how to prevent and to treat HAART-related liver damage will be a continuous challenge for the present and future generations of hepatologists and HIV-physicians.
| Drug | Typical time of occurrence | Laboratory findings (apart from elevated liver enzymes) | Histological hallmarks | Presumed mechanism of toxicity |
| NRTIs | More than 6 months after treatment initiation | Lactate acidosis, LDH elevation, amylase/lipase elevaton | Microvesicular steatosis of hepatocytes and giant mitochondria | Mitochondrial damage Inibition of cellular respiration |
| Nevirapine | 1) during the initial 4 weeks | Eosinophilia, elevated WBC count, elevated IgE-levels | No conclusive data | Hypersensitivity reaction |
| 2) Gradually increasing over time with drug exposure | Elevated drug dosage | No conclusive data | Drug overdosage | |
| Protease Inhibitors | Gradually increasing over time with drug exposure | Hyperlipidemia ? | Balooning degeneration of hepatocytes, Kupffer cell activation, pericellular fibrosis in zone 3 | No data |
SESSION 10: HEPATITIS CO-INFECTIONS AND ADVERSE EVENTS II
2004-11-14
PL10.2
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