PMID- 27697025 OWN - NLM STAT- MEDLINE DCOM- 20171222 LR - 20220129 IS - 1873-4286 (Electronic) IS - 1381-6128 (Linking) VI - 22 IP - 45 DP - 2016 TI - Immunological Mechanisms of Drug Hypersensitivity. PG - 6734-6747 LID - 10.2174/1381612822666161003115103 [doi] AB - Drug hypersensitivity reactions (DHRs) are adverse drug reactions that may be divided into several categories; namely pharmacologic intolerance, idiosyncratic reactions, pseudo-allergic reactions and allergic reactions. Drug allergic reactions are those DHRs that are mediated by either antibodies or drug-specific T cells. They vary in terms of severity, time-to-onset of clinical manifestations and target organ. Skin is most commonly implicated in drug hypersensitivity reactions; however, it is now apparent that reactions targeting internal organs fall under the definition of drug hypersensitivity. Multiple hypotheses have been proposed to explain the diverse immune mechanisms involved and the heterogeneous clinical presentation. The discovery of human leukocyte antigen (HLA) risk alleles for some DHRs has provided insights in the pathogenesis of these reactions. In this review we summarize immune cells involved in DHRs, discuss the possible immunological mechanisms of DHRs, with an emphasis on the IgE-mediated immediate reactions and T cell-dependent delayed type reactions. CI - Copyright(c) Bentham Science Publishers; For any queries, please email at epub@benthamscience.org. FAU - Meng, Xiaoli AU - Meng X FAU - Ariza, Adriana AU - Ariza A FAU - Waddington, James AU - Waddington J FAU - Park, Kevin AU - Park K FAU - Naisbitt, Dean AU - Naisbitt D AD - MRC Centre for Drug Safety Science, Department of Molecular and Clinical Pharmacology, University of Liverpool, Liverpool L69 3GE, United Kingdom. LA - eng GR - MR/L006758/1/MRC_/Medical Research Council/United Kingdom PT - Journal Article PT - Research Support, Non-U.S. Gov't PT - Review PL - United Arab Emirates TA - Curr Pharm Des JT - Current pharmaceutical design JID - 9602487 RN - 0 (Anti-Bacterial Agents) SB - IM MH - Anti-Bacterial Agents/*adverse effects/*immunology MH - Drug Hypersensitivity/*immunology MH - Humans MH - Hypersensitivity, Delayed/*immunology MH - T-Lymphocytes/drug effects/*immunology OTO - NOTNLM OT - Drug hypersensitivity OT - IgE. OT - T-cells EDAT- 2016/10/05 06:00 MHDA- 2017/12/23 06:00 CRDT- 2016/10/05 06:00 PHST- 2016/07/09 00:00 [received] PHST- 2016/09/28 00:00 [accepted] PHST- 2016/10/05 06:00 [pubmed] PHST- 2017/12/23 06:00 [medline] PHST- 2016/10/05 06:00 [entrez] AID - CPD-EPUB-78713 [pii] AID - 10.2174/1381612822666161003115103 [doi] PST - ppublish SO - Curr Pharm Des. 2016;22(45):6734-6747. doi: 10.2174/1381612822666161003115103.