PMID- 26895605 OWN - NLM STAT- MEDLINE DCOM- 20170106 LR - 20181113 IS - 1872-7913 (Electronic) IS - 0924-8579 (Print) IS - 0924-8579 (Linking) VI - 47 IP - 3 DP - 2016 Mar TI - Repurposing auranofin for the treatment of cutaneous staphylococcal infections. PG - 195-201 LID - S0924-8579(16)00012-1 [pii] LID - 10.1016/j.ijantimicag.2015.12.016 [doi] AB - The scourge of multidrug-resistant bacterial infections necessitates the urgent development of novel antimicrobials to address this public health challenge. Drug repurposing is a proven strategy to discover new antimicrobial agents; given that these agents have undergone extensive toxicological and pharmacological analysis, repurposing is an effective method to reduce the time, cost and risk associated with traditional antibiotic innovation. In this study, the in vitro and in vivo antibacterial activities of an antirheumatic drug, auranofin, was investigated against multidrug-resistant Staphylococcus aureus. The results indicated that auranofin possesses potent antibacterial activity against all tested strains of S. aureus, including meticillin-resistant S. aureus (MRSA), vancomycin-intermediate S. aureus (VISA) and vancomycin-resistant S. aureus (VRSA), with minimum inhibitory concentrations (MICs) ranging from 0.0625mug/mL to 0.125mug/mL. In vivo, topical auranofin proved superior to conventional antimicrobials, including fusidic acid and mupirocin, in reducing the mean bacterial load in infected wounds in a murine model of MRSA skin infection. In addition to reducing the bacterial load, topical treatment of auranofin greatly reduced the production of inflammatory cytokines, including tumour necrosis factor-alpha (TNFalpha), interleukin-6 (IL-6), interleukin-1 beta (IL-1beta) and monocyte chemoattractant protein-1 (MCP-1), in infected skin lesions. Moreover, auranofin significantly disrupted established in vitro biofilms of S. aureus and Staphylococcus epidermidis, more so than the traditional antimicrobials linezolid and vancomycin. Taken together, these results support that auranofin has potential to be repurposed as a topical antimicrobial agent for the treatment of staphylococcal skin and wound infections. CI - Copyright (c) 2016 Elsevier B.V. and the International Society of Chemotherapy. All rights reserved. FAU - Thangamani, Shankar AU - Thangamani S AD - Department of Comparative Pathobiology, Purdue University College of Veterinary Medicine, West Lafayette, IN, USA. FAU - Mohammad, Haroon AU - Mohammad H AD - Department of Comparative Pathobiology, Purdue University College of Veterinary Medicine, West Lafayette, IN, USA. FAU - Abushahba, Mostafa F N AU - Abushahba MF AD - Department of Comparative Pathobiology, Purdue University College of Veterinary Medicine, West Lafayette, IN, USA; Department of Animal Hygiene and Zoonoses, Faculty of Veterinary Medicine, Assiut University, Assiut, Egypt. FAU - Sobreira, Tiago J P AU - Sobreira TJ AD - Bindley Bioscience Center, Purdue University, West Lafayette, IN, USA. FAU - Seleem, Mohamed N AU - Seleem MN AD - Department of Comparative Pathobiology, Purdue University College of Veterinary Medicine, West Lafayette, IN, USA. Electronic address: mseleem@purdue.edu. LA - eng GR - HHSN272200700055C/AI/NIAID NIH HHS/United States GR - R56 AI114861/AI/NIAID NIH HHS/United States GR - R56AI114861/AI/NIAID NIH HHS/United States PT - Journal Article PT - Research Support, N.I.H., Extramural DEP - 20160123 PL - Netherlands TA - Int J Antimicrob Agents JT - International journal of antimicrobial agents JID - 9111860 RN - 0 (Anti-Bacterial Agents) RN - 0 (Ccl2 protein, mouse) RN - 0 (Chemokine CCL2) RN - 0 (IL1B protein, mouse) RN - 0 (Interleukin-1beta) RN - 0 (Interleukin-6) RN - 0 (Tumor Necrosis Factor-alpha) RN - 3H04W2810V (Auranofin) RN - 59XE10C19C (Fusidic Acid) RN - D0GX863OA5 (Mupirocin) SB - IM MH - Animals MH - Anti-Bacterial Agents/*therapeutic use MH - Auranofin/*therapeutic use MH - Biofilms/drug effects MH - Cell Line MH - Chemokine CCL2/biosynthesis MH - *Drug Repositioning MH - Drug Resistance, Multiple, Bacterial MH - Drug Therapy, Combination MH - Female MH - Fusidic Acid/therapeutic use MH - Humans MH - Interleukin-1beta/biosynthesis MH - Interleukin-6/biosynthesis MH - Methicillin-Resistant Staphylococcus aureus/*drug effects MH - Mice MH - Mice, Inbred BALB C MH - Microbial Sensitivity Tests MH - Mupirocin/therapeutic use MH - Staphylococcal Skin Infections/*drug therapy/microbiology MH - Staphylococcus epidermidis/*drug effects MH - Tumor Necrosis Factor-alpha/biosynthesis PMC - PMC4792765 MID - NIHMS754415 OTO - NOTNLM OT - Auranofin OT - Inflammatory cytokines OT - Multidrug resistance OT - Repurposing OT - Topical antimicrobials EDAT- 2016/02/21 06:00 MHDA- 2017/01/07 06:00 PMCR- 2017/03/01 CRDT- 2016/02/21 06:00 PHST- 2015/08/21 00:00 [received] PHST- 2015/12/18 00:00 [revised] PHST- 2015/12/27 00:00 [accepted] PHST- 2017/03/01 00:00 [pmc-release] PHST- 2016/02/21 06:00 [entrez] PHST- 2016/02/21 06:00 [pubmed] PHST- 2017/01/07 06:00 [medline] AID - S0924-8579(16)00012-1 [pii] AID - 10.1016/j.ijantimicag.2015.12.016 [doi] PST - ppublish SO - Int J Antimicrob Agents. 2016 Mar;47(3):195-201. doi: 10.1016/j.ijantimicag.2015.12.016. Epub 2016 Jan 23.