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o-TOLUIDINE CAS N°: 95-53-4 - UNEP Chemicals

o-TOLUIDINE CAS N°: 95-53-4 - UNEP Chemicals

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OECD SIDS o-<strong>TOLUIDINE</strong><br />

5. TOXICITY ID: <strong>95</strong>-<strong>53</strong>-4<br />

DATE: 07.01.2005<br />

218<br />

HU/ara-C at 1.70 mM and 4.24 mM<br />

Test condition : in presence (to increase the sensitivity) or in absence of the DNA-repair<br />

inhibitors - hydroxyurea and cytosine arabinoside (HU/araC)<br />

toxicity is measured as cell viability parallel to the comet assay<br />

no data on positive control<br />

Reliability : (2) valid with restrictions<br />

special study<br />

15.07.2004 (297)<br />

Type : other: DNA damage<br />

System of testing : human breast milk cells<br />

Test concentration : 0.85 mM<br />

Cycotoxic concentr. : > 0.85 mM<br />

Metabolic activation : without<br />

Result : positive<br />

Method : other: alkaline single-cell gel electrophoresis (comet) assay according to<br />

Singh et al.,1988, Exp. Cell Res. 175, 184-191<br />

Year : 2000<br />

GLP : no data<br />

Test substance : other TS: o-toluidine, no data on purity<br />

Result : Comet tail length were significantly increased in the presence of the DNArepair<br />

inhibitors - hydroxyurea and cytosine arabinoside (HU/araC) and in<br />

absence of cytotoxicity (83% of cells viable)<br />

Reliability : (4) not assignable<br />

special study<br />

15.07.2004 (298) (299)<br />

Type : other: DNA damage<br />

System of testing : human and rat epithel cells of the urinary bladder<br />

Test concentration : 8, 16 and 32 mM<br />

Cycotoxic concentr. : > 80 mM<br />

Metabolic activation :<br />

Result : positive<br />

Method : other: alkaline single-cell gel electrophoresis (comet) assay according to<br />

Singh et al.,1988, Exp. Cell Res. 175, 184-191<br />

Year : 2002<br />

GLP : no data<br />

Test substance : other TS: o-toluidine, purity as reagent grade<br />

Result : Significant dose-dependent increases of DNA fragmentation were obtained<br />

in cells from rats at 8, 16 and 32 mM and in cells from humans with<br />

concentrations from 16 and 32 mM.<br />

Test condition : Primary human and rat epithel cells of urinary bladder were incubated with<br />

test substance over a time period of 20 hours.<br />

DNA damge was quantified by the increase of tail moment, that was<br />

defined as the product of the tail length and the amount of DNA in the tail<br />

(Olive et al., 1990).<br />

Statistical analysis was performedby the use of analysis of variance<br />

followed by Dunnet's test.<br />

solvent: DMSO<br />

Reliability : (2) valid with restrictions<br />

meets scientific principles<br />

15.07.2004 (300)<br />

Type : other: DNA single-strand breaks<br />

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