PMID- 27676418 OWN - NLM STAT- MEDLINE DCOM- 20171128 LR - 20201209 IS - 1521-0499 (Electronic) IS - 0190-2148 (Linking) VI - 42 IP - 7 DP - 2016 Sep TI - Lack of matrix metalloproteinase 3 in mouse models of lung injury ameliorates the pulmonary inflammatory response in female but not in male mice. PG - 365-379 AB - BACKGROUND: The acute respiratory distress syndrome (ARDS) is a complex pulmonary disorder in which the local release of cytokines and chemokines appears central to the pathophysiology. OBJECTIVE: Based on the known role of matrix metalloproteinase-3 (MMP3) in inflammatory processes, the objective was to examine the role of MMP3 in the pathogenesis of ARDS through the modulation of pulmonary inflammation. MATERIALS AND METHODS: Female and male, wild type (MMP3(+/+)) and knock out (MMP3(-/-)) mice were exposed to two, clinically relevant models of ARDS including (i) lipopolysaccharide (LPS)-induced lung injury, and (ii) hydrochloric acid-induced lung injury. Parameters of lung injury and inflammation were assessed through measurements in lung lavage including total protein content, inflammatory cell influx, and concentrations of mediators such as TNF-alpha, IL-6, G-CSF, CXCL1, CXCL2, and CCL2. Lung histology and compliance were also evaluated in the LPS model of injury. RESULTS: Following intra-tracheal LPS instillation, all mice developed lung injury, as measured by an increase in lavage neutrophils, and decrease in lung compliance, with no overall effect of genotype observed. Increased concentrations of lavage inflammatory cytokines and chemokines were also observed following LPS injury, however, LPS-instilled female MMP3(-/-) mice had lower levels of inflammatory mediators compared to LPS-instilled female MMP3(+/+) mice. This effect of the genotype was not observed in male mice. Similar findings, including the MMP3-related sex differences, were also observed after acid-induced lung injury. CONCLUSION: MMP3 contributes to the pathogenesis of ARDS, by affecting the pulmonary inflammatory response in female mice in relevant models of lung injury. FAU - Puntorieri, Valeria AU - Puntorieri V AD - a Department of Physiology and Pharmacology , Lawson Health Research Institute, Western University , London , Ontario , Canada. FAU - McCaig, Lynda A AU - McCaig LA AD - a Department of Physiology and Pharmacology , Lawson Health Research Institute, Western University , London , Ontario , Canada. FAU - Howlett, Christopher J AU - Howlett CJ AD - b Department of Pathology and Laboratory Medicine , Western University , London , Ontario , Canada. FAU - Yao, Li-Juan AU - Yao LJ AD - c Department of Medicine , Western University , London , Ontario , Canada. FAU - Lewis, James F AU - Lewis JF AD - c Department of Medicine , Western University , London , Ontario , Canada. FAU - Yamashita, Cory M AU - Yamashita CM AD - a Department of Physiology and Pharmacology , Lawson Health Research Institute, Western University , London , Ontario , Canada. AD - c Department of Medicine , Western University , London , Ontario , Canada. FAU - Veldhuizen, Ruud A W AU - Veldhuizen RA AD - a Department of Physiology and Pharmacology , Lawson Health Research Institute, Western University , London , Ontario , Canada. AD - c Department of Medicine , Western University , London , Ontario , Canada. LA - eng PT - Journal Article DEP - 20160927 PL - England TA - Exp Lung Res JT - Experimental lung research JID - 8004944 RN - 0 (Lipopolysaccharides) RN - EC 3.4.24.17 (Matrix Metalloproteinase 3) RN - EC 3.4.24.17 (Mmp3 protein, mouse) RN - QTT17582CB (Hydrochloric Acid) SB - IM MH - Acute Lung Injury/chemically induced MH - Animals MH - Female MH - Humans MH - Hydrochloric Acid/pharmacology MH - Lipopolysaccharides/pharmacology MH - Male MH - Matrix Metalloproteinase 3/genetics/*pharmacology MH - Mice MH - Pneumonia/*chemically induced MH - Respiratory Distress Syndrome/*etiology MH - Sex Factors OTO - NOTNLM OT - acute respiratory distress syndrome OT - lung injury OT - matrix metalloproteinases OT - pulmonary inflammation EDAT- 2016/10/25 06:00 MHDA- 2017/11/29 06:00 CRDT- 2016/09/28 06:00 PHST- 2016/10/25 06:00 [pubmed] PHST- 2017/11/29 06:00 [medline] PHST- 2016/09/28 06:00 [entrez] AID - 10.1080/01902148.2016.1231243 [doi] PST - ppublish SO - Exp Lung Res. 2016 Sep;42(7):365-379. doi: 10.1080/01902148.2016.1231243. Epub 2016 Sep 27.