Bae, Jong-Sup Lee, Wonhwa Nam, Ju-Ock Kim, Jung-Eun Kim, Shin-Woo Kim, In-San 2024-01-20T10:02:12Z 2024-01-20T10:02:12Z 2022-01-25 2014-04 1073-449X https://pubs.kist.re.kr/handle/201004/126899 Rationale: Sepsis is a systemic inflammatory condition resulting from bacterial infections; it has a high mortality rate and limited therapeutic options. Despite extensive research into the mechanisms driving bacterial sepsis, the target molecules controlling vascular leakage are still largely unknown. Transforming growth factor beta-induced protein (TGFBIp) is an extracellular matrix protein expressed in several cell types, which is known to interact with integrins. Objectives: The aim of this study was to determine the roles of TGFBIp in vascular proinflammatory responses, and the mechanisms of action driving these responses. Methods: Circulating levels of TGFBIp were measured in patients admitted to the hospital with sepsis, severe sepsis, and septic shock and in cecal ligation and puncture (CLP)-induced septic mice. Effects of TGFBIp knockout on CLP-induced septic mortality and effects of TGFBIp on multiple vascular proinflammatory responses were determined. Measurements and Main Results: Circulating levels of TGFBIp were significantly elevated compared with healthy controls, and were strongly correlated with disease severity. High blood TGFBIp levels were also observed in CLP-induced septic mice. The absence of the TGFBIp gene in mice attenuated CLP-induced sepsis. TGFBIp enhanced vascular proinflammatory responses including vascular permeability, adhesion and migration of leukocytes, and disruption of adherence junctions through interacting with integrin alpha v beta 5. Conclusions: Collectively, our findings demonstrate that the TGFBIp-alpha v beta 5 axis can elicit severe inflammatory responses, suggesting it to be a potential target for development of diagnostics and therapeutics for sepsis. English AMER THORACIC SOC Transforming Growth Factor beta-induced Protein Promotes Severe Vascular Inflammatory Responses Article 10.1164/rccm.201311-2033OC 1 AMERICAN JOURNAL OF RESPIRATORY AND CRITICAL CARE MEDICINE, v.189, no.7, pp.779 - 786 AMERICAN JOURNAL OF RESPIRATORY AND CRITICAL CARE MEDICINE 189 7 779 786 N scie scopus 000333565600008 2-s2.0-84897371722 Critical Care Medicine Respiratory System General & Internal Medicine Respiratory System Article ENDOTHELIAL BARRIER FUNCTION ORGAN DYSFUNCTION SYNDROME INTEGRIN ALPHA-V-BETA-5 SEVERE SEPSIS ADHESION MOLECULE SEPTIC SHOCK BETA-IG-H3 PERMEABILITY BIOMARKERS MIGRATION transforming growth factor beta-induced protein sepsis endothelial dysfunction permeability cecal ligation and puncture