PMID- 33042165 OWN - NLM STAT- MEDLINE DCOM- 20210614 LR - 20240429 IS - 1664-3224 (Electronic) IS - 1664-3224 (Linking) VI - 11 DP - 2020 TI - Gut Ischemia Reperfusion Injury Induces Lung Inflammation via Mesenteric Lymph-Mediated Neutrophil Activation. PG - 586685 LID - 10.3389/fimmu.2020.586685 [doi] LID - 586685 AB - Gut ischemia/reperfusion (I/R) injury is a common clinical problem associated with significant mortality and morbidities that result from systemic inflammation and remote organ dysfunction, typically acute lung injury. The mechanisms underlying the dissemination of gut-derived harmful mediators into the circulation are poorly understood. The objective of our study was to determine the role of mesenteric lymphatic circulation in the systemic and pulmonary inflammatory response to gut I/R. Using a murine intestinal I/R model, we evaluated whether and how blocking mesenteric lymph flow affects the inflammatory response in local tissues (gut) and remote organs (lungs). We further explored the mechanisms of post-I/R lymph-induced systemic inflammation by examining neutrophil activity and interaction with endothelial cells in vitro. Mice subjected to intestinal I/R displayed a significant inflammatory response in local tissues, evidenced by neutrophil infiltration into mucosal areas, as well as lung inflammation, evidenced by increased myeloperoxidase levels, neutrophil infiltration, and elevated microvascular permeability in the lungs. Mesenteric lymph duct ligation (MLDL) had no effect on gut injury per se, but effectively attenuated lung injury following gut I/R. Cell experiments showed that lymph fluid from post-I/R animals, but not pre-I/R, increased neutrophil surface CD11b expression and their ability to migrate across vascular endothelial monolayers. Moreover, post-I/R lymph upregulated neutrophil expression of pro-inflammatory cytokines and chemokines, which was mediated by a mechanism involving nuclear factor (NF)-kappaB signaling. Consistently, gut I/R activated NF-kappaB in lung neutrophils, which was alleviated by MLDL. In conclusion, all these data indicate that mesenteric lymph circulation contributes to neutrophil activation and lung inflammation following gut I/R injury partly through activating NF-kappaB. CI - Copyright (c) 2020 Ma, Zabell, Creasy, Yang, Chatterjee, Villalba, Kistler, Wu and Yuan. FAU - Ma, Yonggang AU - Ma Y AD - Department of Molecular Pharmacology and Physiology, University of South Florida Morsani College of Medicine, Tampa, FL, United States. FAU - Zabell, Taylor AU - Zabell T AD - Department of Molecular Pharmacology and Physiology, University of South Florida Morsani College of Medicine, Tampa, FL, United States. FAU - Creasy, Alexandra AU - Creasy A AD - Department of Molecular Pharmacology and Physiology, University of South Florida Morsani College of Medicine, Tampa, FL, United States. FAU - Yang, Xiaoyuan AU - Yang X AD - Department of Molecular Pharmacology and Physiology, University of South Florida Morsani College of Medicine, Tampa, FL, United States. FAU - Chatterjee, Victor AU - Chatterjee V AD - Department of Molecular Pharmacology and Physiology, University of South Florida Morsani College of Medicine, Tampa, FL, United States. FAU - Villalba, Nuria AU - Villalba N AD - Department of Molecular Pharmacology and Physiology, University of South Florida Morsani College of Medicine, Tampa, FL, United States. FAU - Kistler, Erik B AU - Kistler EB AD - Department of Anesthesiology and Critical Care, University of California, San Diego, Veterans Affairs San Diego Healthcare System, San Diego, CA, United States. FAU - Wu, Mack H AU - Wu MH AD - Department of Surgery, University of South Florida Morsani College of Medicine, Tampa, FL, United States. AD - James A. Haley Veterans' Hospital, Tampa, FL, United States. FAU - Yuan, Sarah Y AU - Yuan SY AD - Department of Molecular Pharmacology and Physiology, University of South Florida Morsani College of Medicine, Tampa, FL, United States. AD - Department of Surgery, University of South Florida Morsani College of Medicine, Tampa, FL, United States. LA - eng GR - R35 HL150732/HL/NHLBI NIH HHS/United States GR - R01 HL120954/HL/NHLBI NIH HHS/United States GR - I01 BX000799/BX/BLRD VA/United States GR - IK6 BX004210/BX/BLRD VA/United States GR - R01 GM097270/GM/NIGMS NIH HHS/United States PT - Journal Article PT - Research Support, N.I.H., Extramural PT - Research Support, U.S. Gov't, Non-P.H.S. DEP - 20200911 PL - Switzerland TA - Front Immunol JT - Frontiers in immunology JID - 101560960 SB - IM MH - Animals MH - Intestines/immunology/injuries/pathology MH - Lymphatic System/*immunology MH - Male MH - Mesentery/immunology MH - Mice MH - Mice, Inbred C57BL MH - Neutrophil Activation/*immunology MH - Pneumonia/*immunology/metabolism MH - Rats MH - Rats, Sprague-Dawley MH - Reperfusion Injury/*immunology/metabolism PMC - PMC7517702 OTO - NOTNLM OT - acute lung injury OT - inflammation OT - intestinal ischemia/reperfusion OT - mesenteric lymph OT - neutrophils OT - permeability EDAT- 2020/10/13 06:00 MHDA- 2021/06/16 06:00 PMCR- 2020/01/01 CRDT- 2020/10/12 05:29 PHST- 2020/07/23 00:00 [received] PHST- 2020/08/21 00:00 [accepted] PHST- 2020/10/12 05:29 [entrez] PHST- 2020/10/13 06:00 [pubmed] PHST- 2021/06/16 06:00 [medline] PHST- 2020/01/01 00:00 [pmc-release] AID - 10.3389/fimmu.2020.586685 [doi] PST - epublish SO - Front Immunol. 2020 Sep 11;11:586685. doi: 10.3389/fimmu.2020.586685. eCollection 2020.