PMID- 24689549 OWN - NLM STAT- MEDLINE DCOM- 20141219 LR - 20211021 IS - 1530-0277 (Electronic) IS - 0145-6008 (Print) IS - 0145-6008 (Linking) VI - 38 IP - 5 DP - 2014 May TI - Episodic binge ethanol exposure impairs murine macrophage infiltration and delays wound closure by promoting defects in early innate immune responses. PG - 1347-55 LID - 10.1111/acer.12369 [doi] AB - BACKGROUND: Exacerbation of cutaneous wound infections and delayed wound closure are frequent complications seen in alcohol exposed subjects who sustain injuries. We previously reported that acute alcohol exposure alters the early dermal inflammatory phase of wound healing and also several parameters of the proliferative wound healing phase in wounds from ethanol (EtOH)-treated mice for several days or weeks after EtOH exposure. Hence, it is likely that the cumulative defects arising in the early phases of the wound healing process directly contribute to the increased complications observed in intoxicated patients at the time of injury. METHODS: C57BL/6 mice were given intraperitoneal EtOH (2.2 g/kg body weight) or vehicle (saline) EtOH using our episodic binge EtOH exposure protocol (3 days EtOH, 4 days off, 3 days EtOH) to yield a blood alcohol concentration (BAC) of 300 mg/dl at the time of wounding. Mice were subjected to six 3 mm full-thickness dorsal wounds and immediately treated topically with 10 mul of sterile saline (control) or diluted Staphylococcus aureus corresponding to 1 x 10(4) CFU/wound. Wounds were harvested at 24 hours post injury to evaluate wound area, neutrophil and macrophage accumulation, and the protein levels of cytokines, interleukin-6 (IL-6), IL-1beta, and IL-10, and chemokines, macrophage inflammatory protein-2 (MIP-2) and MIP-1alpha, monocyte chemotactic protein-1 (MCP-1), and keratinocyte-derived chemokine (KC). The abundance and localization of cathelicidin-related antimicrobial peptide (CRAMP) and the kallikrein epidermal proteases (KLK5 and KLK7) were also determined. RESULTS: Compared to control mice, EtOH-treated mice exhibited delayed wound closure, decreased macrophage accumulation, and impaired production of MIP-1alpha. Furthermore, skin from EtOH-treated mice demonstrated a reduction in the abundance of epidermal CRAMP and KLK7. CONCLUSIONS: These findings suggest that EtOH exposure hinders several distinct components of the innate immune response, including phagocyte recruitment and chemokine/cytokine and AMP production. Together, these effects likely contribute to delayed wound closure and enhanced infection severity observed in intoxicated patients. CI - Copyright (c) 2014 by the Research Society on Alcoholism. FAU - Curtis, Brenda J AU - Curtis BJ AD - Health Sciences Division , Alcohol Research Program, The Burn and Shock Trauma Research Institute, Loyola University Chicago, Maywood, Illinois; Health Sciences Division , Department of Surgery, The Burn and Shock Trauma Research Institute, Loyola University Chicago, Maywood, Illinois. FAU - Hlavin, Sara AU - Hlavin S FAU - Brubaker, Aleah L AU - Brubaker AL FAU - Kovacs, Elizabeth J AU - Kovacs EJ FAU - Radek, Katherine A AU - Radek KA LA - eng GR - F32 AA021636/AA/NIAAA NIH HHS/United States GR - T32 AA013527/AA/NIAAA NIH HHS/United States GR - P30AA19373/AA/NIAAA NIH HHS/United States GR - F32AA021636/AA/NIAAA NIH HHS/United States GR - P30 AA019373/AA/NIAAA NIH HHS/United States GR - R01 AA012034/AA/NIAAA NIH HHS/United States GR - T32AA013527/AA/NIAAA NIH HHS/United States GR - R01AA012034/AA/NIAAA NIH HHS/United States PT - Journal Article PT - Research Support, N.I.H., Extramural PT - Research Support, Non-U.S. Gov't DEP - 20140401 PL - England TA - Alcohol Clin Exp Res JT - Alcoholism, clinical and experimental research JID - 7707242 RN - 3K9958V90M (Ethanol) SB - IM MH - Animals MH - Ethanol/administration & dosage/*pharmacology MH - Fluorescent Antibody Technique MH - Immunity, Innate/*drug effects MH - Macrophages/*drug effects MH - Male MH - Mice, Inbred C57BL MH - Wound Healing/*drug effects PMC - PMC4001884 MID - NIHMS557421 OTO - NOTNLM OT - Antimicrobial Peptides OT - Cathelicidin OT - Inflammation OT - Macrophages OT - Proteases OT - Wound Healing EDAT- 2014/04/03 06:00 MHDA- 2014/12/20 06:00 PMCR- 2015/05/01 CRDT- 2014/04/03 06:00 PHST- 2013/03/28 00:00 [received] PHST- 2013/12/23 00:00 [accepted] PHST- 2014/04/03 06:00 [entrez] PHST- 2014/04/03 06:00 [pubmed] PHST- 2014/12/20 06:00 [medline] PHST- 2015/05/01 00:00 [pmc-release] AID - 10.1111/acer.12369 [doi] PST - ppublish SO - Alcohol Clin Exp Res. 2014 May;38(5):1347-55. doi: 10.1111/acer.12369. Epub 2014 Apr 1.