PMID- 30318948 OWN - NLM STAT- MEDLINE DCOM- 20200528 LR - 20210109 IS - 1547-6901 (Electronic) IS - 1547-691X (Linking) VI - 16 IP - 1 DP - 2019 Dec TI - The skin as a metabolic and immune-competent organ: Implications for drug-induced skin rash. PG - 1-12 LID - 10.1080/1547691X.2018.1514444 [doi] AB - Current advances in the study of cutaneous adverse drug reactions can be attributed to the recent understanding that the skin is both a metabolically and immunologically competent organ. The ability of the skin to serve as a protective barrier with limited drug biotransformation ability, yet highly active immune function, has provided insights into its biological capability. While the immune response of the skin to drugs is vastly different from that of the liver due to evolutionary conditioning, it frequently occurs in response to various drug classes and manifests as a spectrum of hypersensitivity reactions. The skin is a common site of adverse and idiosyncratic drug reactions; drug-specific T-cells, as well as involvement of an innate immune response, appear to be key mechanistic drivers in such scenarios. Association of other factors such as human leukocyte antigen (HLA) polymorphisms may play a significant role for particular drugs. This review aims to integrate emerging findings into proposed mechanisms of drug metabolism and immunity in the skin that are likely responsible for rashes and other local allergic responses. These unique biological aspects of the skin, and their translation into implications for drug development and the use of animal models, will be discussed. FAU - Sharma, Amy AU - Sharma A AD - Amgen Research, Thousand Oaks, CA, USA. AD - Genentech Inc., South San Francisco, CA, USA. FAU - Saito, Yoshiro AU - Saito Y AD - Division of Medicinal Safety Science, National Institute of Health Sciences, Tokyo, Japan. FAU - Hung, Shuen-Iu AU - Hung SI AD - Department and Institute of Pharmacology, School of Medicine, National Yang-Ming University, Taipei, Taiwan. FAU - Naisbitt, Dean AU - Naisbitt D AD - University of Liverpool, Liverpool, UK. FAU - Uetrecht, Jack AU - Uetrecht J AD - Faculty of Pharmacy and Medicine, University of Toronto, Toronto, Canada. FAU - Bussiere, Jeanine AU - Bussiere J AUID- ORCID: 0000-0001-6439-4051 AD - Amgen Research, Thousand Oaks, CA, USA. LA - eng GR - MR/L006758/1/MRC_/Medical Research Council/United Kingdom PT - Journal Article PT - Review DEP - 20181014 PL - England TA - J Immunotoxicol JT - Journal of immunotoxicology JID - 101201960 RN - 0 (HLA Antigens) SB - IM MH - Animals MH - Drug Hypersensitivity/*immunology/pathology MH - Exanthema/*immunology/pathology MH - HLA Antigens/*immunology MH - Humans MH - *Immunity, Innate MH - Skin/*immunology/pathology MH - T-Lymphocytes/*immunology/pathology OTO - NOTNLM OT - Skin toxicology OT - adverse drug reaction OT - idiosyncratic OT - immunology OT - mechanisms OT - metabolism OT - pharmacogenomics OT - skin rash bioactivation EDAT- 2018/10/16 06:00 MHDA- 2020/05/29 06:00 CRDT- 2018/10/16 06:00 PHST- 2018/10/16 06:00 [pubmed] PHST- 2020/05/29 06:00 [medline] PHST- 2018/10/16 06:00 [entrez] AID - 10.1080/1547691X.2018.1514444 [doi] PST - ppublish SO - J Immunotoxicol. 2019 Dec;16(1):1-12. doi: 10.1080/1547691X.2018.1514444. Epub 2018 Oct 14.