Interleukin-9 promotes intestinal barrier injury of sepsis: a translational research
Abstract Background Sepsis is a life-threatening organ dysfunction caused by a dysregulated host response to infection. Intestinal mucosal barrier injury is one of the important manifestations of sepsis. Interleukin-9 (IL-9) and IL-9-producing CD4(+) T cells were emerging pro-inflammatory mediators...
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doaj-d9415239e0f3477eabf772eb7ecce4192021-05-09T11:10:27ZengBMCJournal of Intensive Care2052-04922021-05-019111110.1186/s40560-021-00550-yInterleukin-9 promotes intestinal barrier injury of sepsis: a translational researchJia-Kui Sun0Jing Zhou1Xin-Pei Sun2Xiao Shen3Dong-Mei Zhu4Xiang Wang5Su-Ming Zhou6Xin-Wei Mu7Department of Geriatrics Intensive Care Unit, The First Affiliated Hospital of Nanjing Medical University (Jiangsu Province People’s Hospital)Department of Geriatrics Intensive Care Unit, The First Affiliated Hospital of Nanjing Medical University (Jiangsu Province People’s Hospital)Department of General Office, Productivity Center of Jiangsu ProvinceDepartment of Critical Care Medicine, Nanjing First Hospital, Nanjing Medical UniversityDepartment of Geriatrics Intensive Care Unit, The First Affiliated Hospital of Nanjing Medical University (Jiangsu Province People’s Hospital)Department of Critical Care Medicine, Nanjing First Hospital, Nanjing Medical UniversityDepartment of Geriatrics Intensive Care Unit, The First Affiliated Hospital of Nanjing Medical University (Jiangsu Province People’s Hospital)Department of Critical Care Medicine, Nanjing First Hospital, Nanjing Medical UniversityAbstract Background Sepsis is a life-threatening organ dysfunction caused by a dysregulated host response to infection. Intestinal mucosal barrier injury is one of the important manifestations of sepsis. Interleukin-9 (IL-9) and IL-9-producing CD4(+) T cells were emerging pro-inflammatory mediators with development of intestinal injury. However, it is unclear whether IL-9 is related to the intestinal barrier injury of sepsis. Methods To investigate the roles of IL-9-producing CD4(+) T cells and IL-9 in the process of barrier injury in sepsis, serum IL-9-producing CD4(+) T cell percentages, IL-9, and D-lactate levels were measured in septic patients and controls. The markers of barrier function in serum and intestinal tissue were also collected in septic rats. Moreover, the barrier injury degree and survival rate of septic rats were also investigated after increasing or interfering with IL-9 expression. Results The serum IL-9-producing CD4(+) T cell percentages, IL-9, and D-lactate levels were significantly higher in septic patients or rats than those in controls. IL-9-producing CD4(+) T cells and IL-9 levels were positively correlated with D-lactate levels and had a high predictive value of 28-day mortality in septic patients. The non-survivors had significantly higher serum T cell percentages, IL-9, and D-lactate levels compared with survivors. In septic rats, IL-9 increased the expression levels of D-lactate, whereas that decreased the expression levels of zonula occludens 1. Moreover, the barrier injury was aggravated or alleviated by increasing or interfering with IL-9 expression, respectively. Survival rate analysis also showed that IL-9 decreased the 14-day survival rate of septic rats. Conclusion IL-9 is closely related to intestinal mucosal barrier injury and mortality in sepsis. IL-9 blockade has the potential to improve the barrier injury in sepsis. Trial registration The study was registered at ClinicalTrials.gov (ID: NCT03791866, Date: December 2018).https://doi.org/10.1186/s40560-021-00550-yIL-9-producing CD4(+) T cellsIL-9Imucosal barrierSepsis |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Jia-Kui Sun Jing Zhou Xin-Pei Sun Xiao Shen Dong-Mei Zhu Xiang Wang Su-Ming Zhou Xin-Wei Mu |
spellingShingle |
Jia-Kui Sun Jing Zhou Xin-Pei Sun Xiao Shen Dong-Mei Zhu Xiang Wang Su-Ming Zhou Xin-Wei Mu Interleukin-9 promotes intestinal barrier injury of sepsis: a translational research Journal of Intensive Care IL-9-producing CD4(+) T cells IL-9 Imucosal barrier Sepsis |
author_facet |
Jia-Kui Sun Jing Zhou Xin-Pei Sun Xiao Shen Dong-Mei Zhu Xiang Wang Su-Ming Zhou Xin-Wei Mu |
author_sort |
Jia-Kui Sun |
title |
Interleukin-9 promotes intestinal barrier injury of sepsis: a translational research |
title_short |
Interleukin-9 promotes intestinal barrier injury of sepsis: a translational research |
title_full |
Interleukin-9 promotes intestinal barrier injury of sepsis: a translational research |
title_fullStr |
Interleukin-9 promotes intestinal barrier injury of sepsis: a translational research |
title_full_unstemmed |
Interleukin-9 promotes intestinal barrier injury of sepsis: a translational research |
title_sort |
interleukin-9 promotes intestinal barrier injury of sepsis: a translational research |
publisher |
BMC |
series |
Journal of Intensive Care |
issn |
2052-0492 |
publishDate |
2021-05-01 |
description |
Abstract Background Sepsis is a life-threatening organ dysfunction caused by a dysregulated host response to infection. Intestinal mucosal barrier injury is one of the important manifestations of sepsis. Interleukin-9 (IL-9) and IL-9-producing CD4(+) T cells were emerging pro-inflammatory mediators with development of intestinal injury. However, it is unclear whether IL-9 is related to the intestinal barrier injury of sepsis. Methods To investigate the roles of IL-9-producing CD4(+) T cells and IL-9 in the process of barrier injury in sepsis, serum IL-9-producing CD4(+) T cell percentages, IL-9, and D-lactate levels were measured in septic patients and controls. The markers of barrier function in serum and intestinal tissue were also collected in septic rats. Moreover, the barrier injury degree and survival rate of septic rats were also investigated after increasing or interfering with IL-9 expression. Results The serum IL-9-producing CD4(+) T cell percentages, IL-9, and D-lactate levels were significantly higher in septic patients or rats than those in controls. IL-9-producing CD4(+) T cells and IL-9 levels were positively correlated with D-lactate levels and had a high predictive value of 28-day mortality in septic patients. The non-survivors had significantly higher serum T cell percentages, IL-9, and D-lactate levels compared with survivors. In septic rats, IL-9 increased the expression levels of D-lactate, whereas that decreased the expression levels of zonula occludens 1. Moreover, the barrier injury was aggravated or alleviated by increasing or interfering with IL-9 expression, respectively. Survival rate analysis also showed that IL-9 decreased the 14-day survival rate of septic rats. Conclusion IL-9 is closely related to intestinal mucosal barrier injury and mortality in sepsis. IL-9 blockade has the potential to improve the barrier injury in sepsis. Trial registration The study was registered at ClinicalTrials.gov (ID: NCT03791866, Date: December 2018). |
topic |
IL-9-producing CD4(+) T cells IL-9 Imucosal barrier Sepsis |
url |
https://doi.org/10.1186/s40560-021-00550-y |
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