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IARC MONOGRAPHS ON THE EVALUATION OF CARCINOGENIC ...

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Table 6. DNA adduct formation by aristolochic acids (AAs) in vitro<br />

Test system Assay Dose Result Reference<br />

Adduct formation by AAI in DNA (calf thymus) in vitro with S9 mix a ,<br />

aerobic<br />

Adduct formation by AAI in DNA (calf thymus) in vitro with S9 mix a ,<br />

anaerobic b<br />

Adduct formation by AAII in DNA (calf thymus) in vitro with S9 mix a ,<br />

aerobic<br />

Adduct formation by AAII in DNA (calf thymus) in vitro with S9 mix a ,<br />

anaerobic b<br />

Adduct formation by AAI in DNA (calf thymus) in vitro with xanthine<br />

oxidase (0.1 μg/mL), anaerobic b<br />

Adduct formation by AAII in DNA (calf thymus) in vitro with xanthine<br />

oxidase (0.1 μg/mL), anaerobic b<br />

Adduct formation by AAI in polydG in vitro with S9 mix aerobic or<br />

anaerobic<br />

Adduct formation by AAI in DNA (calf thymus) in vitro with rat faecal<br />

bacteria, anaerobic b<br />

Adduct formation by AAII in DNA (calf thymus) in vitro with rat<br />

faecal bacteria, anaerobic b<br />

Adduct formation by AAI in DNA of forestomach and glandular<br />

stomach in explanted stomach of rats<br />

Adduct formation by AAII in DNA of forestomach and glandular<br />

stomach in explanted stomach of rats<br />

Adduct formation by AAI with deoxyguanosine and deoxyadenosine<br />

in vitro in the presence of xanthine oxidase, anaerobic<br />

Standard 32 P-postlabelling 0.4 mM 4 adducts<br />

Nuclease P1-enhanced 32 Ppostlabelling<br />

UV/vis and fluorescence<br />

spectroscopy. Adducts were<br />

spectroscopically identified<br />

as dG-AAI and dA-AAI.<br />

1 mmol/2 mL<br />

30 μmol/kg bw<br />

daily for<br />

5 days (oral)<br />

2 adducts<br />

No adducts<br />

2 adducts<br />

4 adducts<br />

2 adducts<br />

2 adducts<br />

Same pattern as in vivo<br />

(cf Table 4)<br />

Same pattern as in vivo<br />

(cf Table 4)<br />

4 adducts<br />

2 adducts<br />

Same adducts are<br />

formed in DNA<br />

Schmeiser<br />

et al. (1988)<br />

Pfau et al.<br />

(1990a)<br />

Pfau et al.<br />

(1990b)<br />

106<br />

<strong>IARC</strong> <strong>M<strong>ON</strong>OGRAPHS</strong> VOLUME 82

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