PMID- 12361632 OWN - NLM STAT- MEDLINE DCOM- 20030325 LR - 20190815 IS - 0142-9612 (Print) IS - 0142-9612 (Linking) VI - 23 IP - 24 DP - 2002 Dec TI - Sensitization potential of gold sodium thiosulfate in mice and guinea pigs. PG - 4907-14 AB - Since gold sodium thiosulfate (GST) has been included in a standard patch test series for diagnosis of allergic contact dermatitis from gold, the incidence of patients showing positive reactions to gold is increasing. However, there were little reports on induction of gold sensitization in animals. In this study, we have examined the sensitization potential of GST using mice and guinea pigs. In the guinea pig maximization test, 2 or 6 out of 10 animals showed positive skin responses, mainly edema, by challenge with 2% or 5% GST in 50% ethanol solution, respectively. In the mouse ear swelling test, positive ear swelling (20% greater increase in ear thickness) after challenge with GST was shown in 2 out of 6 mice those previously treated with GST. Topical exposure of mice to GST in 70% dimethylsulfoxide solution induced small increases in the lymph node weight and the lymph node cell (LNC) number in the murine local lymph node assay (LLNA). A greater degree of LNC responses were observed in the sensitive mouse lymph node assay (SLNA) compared with the LLNA, but the stimulation index of total lymph node response by GST was not so high. From these results, GST was identified as a contact allergen, but the sensitization potential was not so strong. In the mouse IgE test, treatment of mice with GST resulted in a statistically significant increase in the serum IgE antibody concentration that associated with immediate-type hypersensitivity reaction. It may suggest that the sensitization responses from gold would appear not only at the contact site but also systematically. CI - Copyright 2002 Elsevier Science Ltd. FAU - Ikarashi, Y AU - Ikarashi Y AD - Division of Medical Devices, National Institute of Health Sciences, Kamiyoga 1-18-1, Setagaya-ku, Tokyo 158-8501, Japan. ikarashi@nihs.go.jp FAU - Kaniwa, M AU - Kaniwa M FAU - Tsuchiya, T AU - Tsuchiya T LA - eng PT - Journal Article PL - Netherlands TA - Biomaterials JT - Biomaterials JID - 8100316 RN - 37341-29-0 (Immunoglobulin E) RN - CKS1YQ9W1J (Gold Sodium Thiosulfate) SB - IM MH - Animals MH - Dermatitis, Allergic Contact/diagnosis MH - Female MH - Gold Sodium Thiosulfate/*pharmacology MH - Guinea Pigs MH - Immunization MH - Immunoglobulin E/immunology/metabolism MH - Lymph Nodes/pathology MH - Mice EDAT- 2002/10/04 04:00 MHDA- 2003/03/26 05:00 CRDT- 2002/10/04 04:00 PHST- 2002/10/04 04:00 [pubmed] PHST- 2003/03/26 05:00 [medline] PHST- 2002/10/04 04:00 [entrez] AID - S0142961202002508 [pii] AID - 10.1016/s0142-9612(02)00250-8 [doi] PST - ppublish SO - Biomaterials. 2002 Dec;23(24):4907-14. doi: 10.1016/s0142-9612(02)00250-8.