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Phenobarbital and its Sodium Salt - IARC Monographs on the ...

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Table 3 (c<strong>on</strong>td)<br />

Strain (sex) Initiator, dose, route<br />

<str<strong>on</strong>g>and</str<strong>on</strong>g> durati<strong>on</strong><br />

Fischer 344<br />

(M)<br />

Fischer 344<br />

(M <str<strong>on</strong>g>and</str<strong>on</strong>g> F)<br />

NDEA, 1 × 100 mg/kg<br />

bw (day 1) + MNU,<br />

4 × 20 mg/kg bw<br />

(days 2, 5, 8, 11),<br />

ip + NBHPA, 0.1% in<br />

water, 2 weeks<br />

(weeks 3–4)<br />

NDEA, 10 mg/kg bw<br />

× 1 (24 h after PH) at<br />

4 weeks, 6 or 12<br />

m<strong>on</strong>ths of age, ig<br />

Wistar (F) NDEA, 10 mg/kg bw,<br />

ig<br />

Fischer 344<br />

(M)<br />

Fischer<br />

344/DuCrj<br />

(M)<br />

NBHPA, 1000 mg/kg<br />

bw × 2 (week 1), ip;<br />

NEHEA, 1500 mg/kg<br />

bw × 2 (week 2), ip;<br />

DMAB, 75 mg/kg bw<br />

(week 3), sc × 2<br />

NDEA, 100 mg/kg bw,<br />

ip<br />

Interval<br />

between<br />

initiator <str<strong>on</strong>g>and</str<strong>on</strong>g><br />

promoter<br />

Dose <str<strong>on</strong>g>and</str<strong>on</strong>g> durati<strong>on</strong> of PB or<br />

NaPB <str<strong>on</strong>g>and</str<strong>on</strong>g> route<br />

0 day NaPB, 0.05% diet, 14 or 20<br />

weeks<br />

Promoting or anti-promoting effects<br />

<strong>on</strong> preneoplastic or neoplastic<br />

hepatocellular lesi<strong>on</strong>s<br />

GST-P-positive foci; increase in<br />

number <str<strong>on</strong>g>and</str<strong>on</strong>g> size of foci<br />

2 weeks PB, 0.05%, 6 m<strong>on</strong>ths γ-GT-positive foci; growth more<br />

effective at 6 m<strong>on</strong>ths than when<br />

initiated at 4 weeks or 12 m<strong>on</strong>ths;<br />

males more susceptible<br />

10 days PB, 20, 50, 100, 200 <str<strong>on</strong>g>and</str<strong>on</strong>g><br />

200 mg/L in water for 70,<br />

23, 11, 9, 5 weeks,<br />

respectively<br />

ATPase-deficient foci; not increased<br />

at 20 mg/L; no effect at 50, 100<br />

mg/L; inhibitory effect at 200 mg/L<br />

1 week PB, 0.05% diet, 12 weeks GST-P-positive foci; promoti<strong>on</strong> by<br />

PB<br />

1 week PB, 1, 4, 16, 75, 300 or<br />

1200 mg/L in water, 39<br />

weeks<br />

γ-GT-positive, GST-P-positive foci;<br />

dose-dependent promoti<strong>on</strong> by PB<br />

from 75 to 1200 mg/L<br />

Reference<br />

Shibata et al.<br />

(1990)<br />

Xu et al.<br />

(1990)<br />

Appel et al.<br />

(1991)<br />

Uwagawa et al.<br />

(1992)<br />

Maekawa et al.<br />

(1992)<br />

192<br />

<str<strong>on</strong>g>IARC</str<strong>on</strong>g> MONOGRAPHS VOLUME 79

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