PMID- 10945748 OWN - NLM STAT- MEDLINE DCOM- 20010118 LR - 20220311 IS - 0105-1873 (Print) IS - 0105-1873 (Linking) VI - 43 IP - 2 DP - 2000 Aug TI - Activity of human contact allergens in the murine local lymph node assay. PG - 95-102 AB - The murine local lymph node assay (LLNA) is a predictive test for the identification of chemicals that have the potential to cause skin sensitization. Since its original development, the assay has been the subject of national and international evaluation studies and extensive comparisons with guinea pig tests and human data. On the basis of these investigations, the LLNA has recently been endorsed by ICCVAM (Interagency Coordinating Committee on the Validation of Alternative Methods) as a stand-alone method for skin sensitization hazard identification. At the same time, ICCVAM confirmed that, although the LLNA is not an in vitro method, it does represent a refinement in the way animals are used and can provide a means for reducing the number of animals used in sensitization hazard assessment. The investigations described here were designed to explore further the ability of the LLNA to identify accurately those chemicals that cause allergic contact dermatitis in humans. To that end we have measured, amongst 3 independent laboratories, LLNA responses induced by a total of 18 test chemicals, 11 of which are known to cause skin sensitization and 7 of which are believed not to be associated with any significant evidence of allergic contact dermatitis in humans. The LLNA correctly classified 16 of the 18 materials. The 11 chemicals tested which are associated with allergic contact dermatitis in humans were found to be positive in the LLNA. Of the 7 materials believed to be non-sensitizers, 5 were negative in the LLNA and 2 produced positive results. Collectively, these data provide additional evidence that the LLNA is able to discriminate skin sensitizers from those chemicals which do not possess a significant skin sensitization potential and thus provides a method for hazard identification that offers important animal welfare benefits. FAU - Ryan, C A AU - Ryan CA AD - The Procter & Gamble Company, Cincinnati, Ohio 45253, USA. FAU - Gerberick, G F AU - Gerberick GF FAU - Cruse, L W AU - Cruse LW FAU - Basketter, D A AU - Basketter DA FAU - Lea, L AU - Lea L FAU - Blaikie, L AU - Blaikie L FAU - Dearman, R J AU - Dearman RJ FAU - Warbrick, E V AU - Warbrick EV FAU - Kimber, I AU - Kimber I LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't PL - England TA - Contact Dermatitis JT - Contact dermatitis JID - 7604950 RN - 0 (Allergens) SB - IM MH - Allergens/*adverse effects MH - Animals MH - Dermatitis, Allergic Contact/*etiology MH - Female MH - Humans MH - *Local Lymph Node Assay MH - Mice MH - Mice, Inbred CBA MH - Predictive Value of Tests EDAT- 2000/08/17 11:00 MHDA- 2001/02/28 10:01 CRDT- 2000/08/17 11:00 PHST- 2000/08/17 11:00 [pubmed] PHST- 2001/02/28 10:01 [medline] PHST- 2000/08/17 11:00 [entrez] AID - 10.1034/j.1600-0536.2000.043002095.x [doi] PST - ppublish SO - Contact Dermatitis. 2000 Aug;43(2):95-102. doi: 10.1034/j.1600-0536.2000.043002095.x.