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Cytochrom P450<br />

Fremdstoff<br />

Induziertes P-450-<br />

Enzym<br />

Tabakrauch CYP1A1<br />

Tabakrauch<br />

Indolverbindungen in Kohl<br />

CYP1A2<br />

Alkohol CYP2E1<br />

Arzneimittel:<br />

z.B. Barbiturate<br />

Cytochrom P-450 abhängige Monooxigenasen: Charakteristika<br />

Fremdstoff<br />

SKF525A (Proadifen)<br />

CYP2Bn<br />

CYP3A4<br />

Induziertes P-450-<br />

Enzym<br />

Universelle Inhibitisten<br />

aller CYPS<br />

Naphtoflavon 1A1 – 1A2<br />

Ketoconazol 3A4<br />

� Speziesunterschiede in den<br />

Isoenzymaktivitäten<br />

� modulierende Faktoren<br />

innerhalb einer Spezies:<br />

Geschlecht, Alter, genetische<br />

Variabilität<br />

� Induzierbar<br />

Fremdstoffe, die CP-450-<br />

Enzyme induzieren:<br />

� Hemmbar<br />

Fremdstoffe, die CP-450-<br />

Enzyme inhibieren

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