PMID- 14563405 OWN - NLM STAT- MEDLINE DCOM- 20031209 LR - 20190901 IS - 0278-6915 (Print) IS - 0278-6915 (Linking) VI - 41 IP - 12 DP - 2003 Dec TI - Classification of contact allergens according to potency: proposals. PG - 1799-809 AB - It is clear that contact allergens vary substantially with regard to the relative potency with which they are able to induce skin sensitisation. Considerations of potency will in the future become a significant factor in the classification of skin sensitising chemicals. It is therefore appropriate to establish what is known of potency and thresholds in the induction of skin sensitisation and the elicitation of allergic contact dermatitis, and to identify approaches that might be available for assessment of relative potency for the purposes of categorising chemical allergens. This paper was prepared by an ECETOC (European Centre for Ecotoxicology and Toxicology) Task Force that had the objective of recommending approaches for the measurement of potency and definition of thresholds for both the induction and elicitation of contact sensitisation. The deliberations recorded here build upon recommendations made previously by an ECETOC Task Force that considered the conduct of standard skin sensitisation test methods for the purposes of hazard identification and risk assessment (ECETOC, Monograph No. 29, Brussels, 2000). The emphasis in this present paper is also on standard and accepted methods for the assessment of skin sensitisation, and for which OECD guidelines are available: the local lymph node assay (LLNA), the guinea pig maximisation test and the occluded patch test of Buehler. For various reasons, discussed in detail herein, attention focused primarily upon consideration of categorisation of chemical allergens and the identification of thresholds with respect to the induction of skin sensitisation, rather than the elicitation of allergic contact dermatitis. It is concluded that although the LLNA is the method of choice for the determination of skin sensitisation potency for the purposes of categorisation, if data are already available from appropriate guinea pig tests then their judicious interpretation may provide information of value in determinations of potency and categorisation. Included here are detailed and specific recommendations for how best the results of the three test methods considered can be used for the categorisation of chemical allergens as a function of skin sensitisation potency. FAU - Kimber, I AU - Kimber I AD - Syngenta Central Toxicology Laboratory, Alderley Park, Macclesfield, Cheshire SK10 4TJ, UK. ian.kimber@syngenta.com FAU - Basketter, D A AU - Basketter DA FAU - Butler, M AU - Butler M FAU - Gamer, A AU - Gamer A FAU - Garrigue, J-L AU - Garrigue JL FAU - Gerberick, G F AU - Gerberick GF FAU - Newsome, C AU - Newsome C FAU - Steiling, W AU - Steiling W FAU - Vohr, H-W AU - Vohr HW LA - eng PT - Guideline PT - Journal Article PL - England TA - Food Chem Toxicol JT - Food and chemical toxicology : an international journal published for the British Industrial Biological Research Association JID - 8207483 RN - 0 (Allergens) SB - IM MH - Allergens/*classification/*toxicity MH - Animals MH - Dermatitis, Allergic Contact/*classification/*pathology MH - Guinea Pigs MH - Humans MH - Immunization MH - Local Lymph Node Assay MH - Reference Standards MH - Skin Tests/classification EDAT- 2003/10/18 05:00 MHDA- 2003/12/10 05:00 CRDT- 2003/10/18 05:00 PHST- 2003/10/18 05:00 [pubmed] PHST- 2003/12/10 05:00 [medline] PHST- 2003/10/18 05:00 [entrez] AID - S0278691503002230 [pii] AID - 10.1016/s0278-6915(03)00223-0 [doi] PST - ppublish SO - Food Chem Toxicol. 2003 Dec;41(12):1799-809. doi: 10.1016/s0278-6915(03)00223-0.