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cecal ligation and. puncture

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https://www.readbyqxmd.com/read/28430592/resveratrol-protects-against-early-polymicrobial-sepsis-induced-acute-kidney-injury-through-inhibiting-endoplasmic-reticulum-stress-activated-nf-%C3%AE%C2%BAb-pathway
#1
Nian Wang, Li Mao, Liu Yang, Jiang Zou, Ke Liu, Meidong Liu, Huali Zhang, Xianzhong Xiao, Kangkai Wang
Resveratrol, a polyphenol compound derived from various edible plants, protects against sepsis-induced acute kidney injury (AKI) via its anti-inflammatory activity, but the underlying mechanisms remain largely unknown. In this study, a rat model of sepsis was established by cecal ligation and puncture (CLP), 30 mg/kg resveratrol was intraperitoneally administrated immediately after the CLP operation. HK-2 cells treated by 1 μg/ml lipopolysaccharide, 0.2 μM tunicamycin, 2.5 mM irestatin 9389 and 20 μM resveratrol were used for in vitro study...
April 5, 2017: Oncotarget
https://www.readbyqxmd.com/read/28428961/glucose-insulin-potassium-alleviates-intestinal-mucosal-barrier-injuries-involving-decreased-expression-of-uncoupling-protein-2-and-nlr-family-pyrin-domain-containing-3-inflammasome-in-polymicrobial-sepsis
#2
Jun-Liang Zhang, Yi-Ting Chen, Guang-Dao Chen, Tao Wang, Ju-Xin Zhang, Qi-Yi Zeng
Uncoupling protein 2 (UCP2) may be critical for intestinal barrier function which may play a key role in the development of sepsis, and insulin has been reported to have anti-inflammatory effects. Male Sprague-Dawley rats were randomly allocated into five groups: control group, cecal ligation and puncture (CLP) group, sham surgery group, CLP plus glucose-insulin-potassium (GIK) group, and CLP plus glucose and potassium (GK) group. Ileum tissues were collected at 24 h after surgery. Histological and cytokine analyses, intestinal permeability tests, and western blots of intestinal epithelial tight junction component proteins and UCP2 were performed...
2017: BioMed Research International
https://www.readbyqxmd.com/read/28424540/mc-ppea-as-a-new-and-more-potent-inhibitor-of-clp-induced-sepsis-and-pulmonary-inflammation-than-fk866
#3
Peixin Huang, Mark W Lee, Keivan Sadrerafi, Daniel P Heruth, Li Q Zhang, Dev Maulik, Shui Qing Ye
Our previous study indicated that overexpression of nicotinamide phosphoribosyltransferase (NAMPT) aggravated acute lung injury, while knockdown of NAMPT expression attenuated ventilator-induced lung injury. Recently, we found that meta-carborane-butyl-3-(3-pyridinyl)-2E-propenamide (MC-PPEA, MC4), in which the benzoylpiperidine moiety of FK866 has been replaced by a carborane, displayed a 100-fold increase in NAMPT inhibition over FK866. Here, we determined the effects of MC4 and FK866 on cecal ligation and puncture (CLP) surgery-induced sepsis in C57BL/6J mice...
2017: Drug Design, Development and Therapy
https://www.readbyqxmd.com/read/28420467/-study-of-plasma-amino-acid-related-metabolites-of-septic-rats-using-gas-chromatography-mass-spectrometry
#4
Jin Su, Yimin Zhu, Yu Jiang, Lianhong Zou, Xiaoliang Liu, Yixiao Xu
OBJECTIVE: To reveal the pathophysiological changes of sepsis, the plasma metabonomics of septic rats was determined and differential metabolites were determined by gas chromatography-mass spectrometry (GC-MS). METHODS: Male Spraguee-Dawley (SD) rats about 8 weeks were randomly divided into sham group (n = 18) and sepsis group (n = 24). Cecal ligation and puncture (CLP) was used to build sepsis model, while cecum was kept intact only in the sham group. 6 hours after the operation, rats were anesthetized, and blood was harvested through heart thoracotomy...
April 2017: Zhonghua Wei Zhong Bing Ji Jiu Yi Xue
https://www.readbyqxmd.com/read/28420464/-effect-of-combination-therapy-with-propofol-and-hydrogen-rich-saline-on-organ-damage-and-cytokines-in-a-murine-model-of-sepsis
#5
Yunchuan Hong, Hongguang Chen, Yonghao Yu, Keliang Xie
OBJECTIVE: To investigate the effect of combining propofol with hydrogen on organ damage and inflammation of sepsis in cecal ligation and puncture (CLP) mice model. METHODS: One hundred and forty male C57BL/6 mice were randomly divided into groups (n = 28): sham group, CLP group, propofol group, H2 group, and propofol and H2 group. The sepsis was induced by CLP operation. Mice in sham group did the same operation with ligation and puncture. The mice of propofol group and propofol and H2 group were given 50 mg/kg propofol through tail vein at 1 hour and 6 hours after CLP and the mice of H2 group and propofol and H2 group were given 5 mL/kg H2-rich saline i...
April 2017: Zhonghua Wei Zhong Bing Ji Jiu Yi Xue
https://www.readbyqxmd.com/read/28409836/platelet-derived-microparticles-regulates-thrombin-generation-via-phophatidylserine-in-abdominal-sepsis
#6
Yongzhi Wang, Su Zhang, Lingtao Luo, Eva Norström, Oscar Ö Braun, Matthias Mörgelin, Henrik Thorlacius
Sepsis is associated with dysfunctional coagulation. Recent data suggest that platelets play a role in sepsis by promoting neutrophil accumulation. Herein, we show that cecal ligation and puncture (CLP) triggered systemic inflammation, which is characterized by formation of IL-6 and CXC chemokines as well as neutrophil accumulation in the lung. Platelet depletion decreased neutrophil accumulation, IL-6 and CXC chemokines formation in septic lungs. Depletion of platelets increased peak thrombin formation and total thrombin generation (TG) in plasma from septic animals...
April 14, 2017: Journal of Cellular Physiology
https://www.readbyqxmd.com/read/28408808/acute-kidney-injury-and-inflammatory-response-of-sepsis-following-cecal-ligation-and-puncture-in-d-galactose-induced-aging-rats
#7
Chao Liu, Jie Hu, Zhi Mao, Hongjun Kang, Hui Liu, Wanlei Fu, Yangfan Lv, Feihu Zhou
BACKGROUND: Recently, the d-galactose (d-gal)-induced mimetic aging rat model has been widely used in studies of age-associated diseases, which have shown that chronic d-gal exposure induces premature aging similar to natural aging in rats. With the increasing rate of sepsis in the geriatric population, an easy-access animal model for preclinical studies of elderly sepsis is urgently needed. This study investigates whether a sepsis model that is established in d-gal-induced aging rats can serve as a suitable model for preclinical studies of elderly patients with sepsis...
2017: Clinical Interventions in Aging
https://www.readbyqxmd.com/read/28406323/the-inhibiting-effect-of-intravenous-anesthesia-on-adrenal-gland-functions-under-the-sepsis-condition
#8
Te Wang, Changdong Liu, Pihong Wei, Lili Lv, Zaiqi Yang
This study aims to explore the effect of intravenous anesthesia on the adrenal gland functions of rats with sepsis as well as on their lungs and adrenal gland tissues in order to provide a theoretical reference for the cure of sepsis. Female Sprague Dawley (SD) rats were taken as the research objects in this study. Venous channels of rats were constructed by catheterization through the external jugular vein, and the cecal ligation and puncture technique was adopted to duplicate the sepsis rat models. The level of tumor necrosis factor-α (TNF-α) in serum was detected using enzyme-linked immunosorbent assay (ELISA), and necrocytosis was observed by the fluorescent staining method...
April 1, 2017: International Journal of Immunopathology and Pharmacology
https://www.readbyqxmd.com/read/28405943/myocardial-oxidative-stress-correlates-with-left-ventricular-dysfunction-on-strain-echocardiography-in-a-rodent-model-of-sepsis
#9
Bereketeab Haileselassie, Erik Su, Iraklis Pozios, Diego F Niño, Hongyun Liu, Dai-Yin Lu, Ioannis Ventoulis, William B Fulton, Chhinder P Sodhi, David Hackam, Brian O'Rourke, Theodore Abraham
BACKGROUND: Recognition of cardiomyopathy in sepsis can be challenging due to the limitations of conventional measures such as ejection fraction (EF) and fractional shortening (FS) in the context of variable preload and afterload conditions. This study correlates myocardial function using strain echocardiography (SE) with cardiomyocyte oxidative stress in a murine model of sepsis. METHODS: C57BL/6J mice were randomized into control (n = 10), sham (n = 25), and a cecal ligation and puncture (CLP) (n = 33) model of sepsis...
December 2017: Intensive Care Medicine Experimental
https://www.readbyqxmd.com/read/28405676/ulinastatin-protects-against-lipopolysaccharide-induced-cardiac-microvascular-endothelial-cell-dysfunction-via-downregulation-of-lncrna-malat1-and-ezh2-in-sepsis
#10
Zhaoxia Yu, Aisa Rayile, Xiangyang Zhang, Ying Li, Qiang Zhao
The present study aimed to evaluate the effects of ulinastatin on the permeability and apoptosis of lipopolysaccharide (LPS)-induced cardiac microvascular endothelial cells (CMVECs), and investigate its molecular mechanisms in sepsis. The sepsis rat model was induced by cecal ligation and puncture (CLP), and rat CMVECs were isolated and treated with LPS or/and ulinastatin. Then, cell permeability was evaluated by transendothelial electrical resistance, reactive oxygen species (ROS) levels were assessed by 2,7-dichlorofluorescein diacetate, cell apoptosis was detected using Annexin V-FITC apoptosis detection kit, and the expression levels of Bcl-2, Bax, caspase-3, metastasis-associated lung adenocarcinoma transcript 1 (MALAT1) and EZH2 were detected by RT-qPCR and/or western blotting...
May 2017: International Journal of Molecular Medicine
https://www.readbyqxmd.com/read/28405616/the-impact-of-environmental-enrichment-on-the-murine-inflammatory-immune-response
#11
Samuel Brod, Thomas Gobbetti, Beatrice Gittens, Masahiro Ono, Mauro Perretti, Fulvio D'Acquisto
Living in a mentally and physically stimulating environment has been suggested to have a beneficial effect on the immune response. This study investigates these effects, utilizing a 2-week program of environmental enrichment (EE) and 2 models of acute inflammation: zymosan-induced peritonitis (ZIP) and the cecal ligation and puncture (CLP) model of sepsis. Our results revealed that following exposure to EE, mice possessed a significantly higher circulating neutrophil to lymphocyte ratio compared with control animals...
April 6, 2017: JCI Insight
https://www.readbyqxmd.com/read/28405131/indocyanine-green-001-icg-001-attenuates-wnt-%C3%AE-catenin-induces-myocardial-injury-following-sepsis
#12
Nasser Ghaly Yousif, Najah R Hadi, Alaa Manea Hassan
OBJECTIVE: To investigate the mechanistic pathway of both indocyanine green (ICG)-001 in attenuated endotoxemia-induced cardiac depression through downregulation cardiac Wnt/ β-catenin cell signaling. MATERIALS AND METHODS: Adult (4-6 months) male Albino-Webster mice, their weights ranged from 25 to 30 g, were pretreated with ICG-001 i.p., following cecal ligation and puncture (CLP). Left ventricle (LV) function was assessed using a microcatheter system. Monocyte chemoattractant protein-1 (MCP-1) and cytokines mediators in plasma and myocardium were analyzed by enzyme-linked immunosorbent assay...
January 2017: Journal of Pharmacology & Pharmacotherapeutics
https://www.readbyqxmd.com/read/28404559/surviving-murine-experimental-sepsis-affects-the-function-and-morphology-of-the-inner-ear
#13
Natalie Fischer, Nina Maria Mathonia, Georges Hoellerich, Julian Veser, Leyla Pinggera, Daniel Dejaco, Rudolf Glueckert, Anneliese Schrott-Fischer, Peter Lackner, Herbert Riechelmann, Joachim Schmutzhard
OBJECTIVE: Severe sepsis is known to result in various neurological long-term deficits in human. Recently, a link between severe, lethal sepsis and significant hearing loss with correlating histomorphological inner ear changes in mice (C57BL/6) was observed. However, if similar observations can be made in severe, non-lethal sepsis in mice is unclear. This study evaluates mice after severe, non-lethal sepsis for analogue functional and histomorphological alterations of the inner ear. MATERIALS AND METHODS: A total of 63 C57BL/6 mice were included in the study...
April 12, 2017: Biology Open
https://www.readbyqxmd.com/read/28393192/cyclosporine-a-attenuates-cardiac-dysfunction-induced-by-sepsis-via-inhibiting-calcineurin-and-activating-ampk-signaling
#14
Jingmiao Liu, Da Chen, Xiaowei Liu, Zhi Liu
The aim of the present study was to investigate whether cyclosporine A (CSA) improved cardiac dysfunction at an early stage of sepsis. Male Wistar rats were randomly divided into the following three groups: the sham‑operated control group, the cecal ligation puncture (CLP) procedure‑induced sepsis group and the CSA intervention group. Cecal ligation was performed to generate a sepsis model. At different time points (2, 6, 12, 24 and 72 h) following sepsis induction, blood pressure, cardiac function, and non‑esterified free fatty acid (NEFA) levels in the plasma and myocardia were measured, and the expression levels of components associated with the AMP‑activated protein kinase (AMPK)‑acetyl CoA carboxylase (ACC)‑carnitine palmitoyl transferase 1 (CPT1) signaling pathway were compared among the three groups...
March 31, 2017: Molecular Medicine Reports
https://www.readbyqxmd.com/read/28368519/overexpression-of-ho-1-contributes-to-sepsis-induced-immunosuppression-by-modulating-the-th1-th2-balance-and-regulatory-t-cell-function
#15
Seong-Jin Yoon, So-Jin Kim, Sun-Mee Lee
Background.: Countervailing anti-inflammatory response and immunosuppression can cause death in late sepsis. Depletion and dysfunction of T-cells are critical for developing sepsis-induced immunosuppression. Heme oxygenase (HO)-1 has a regulatory effect on differentiation and function of T-cells and anti-inflammatory properties. We therefore investigated the immunosuppressive role of HO-1 in sepsis with a focus on its effects on helper T-cell (Th) differentiation and regulatory T-cells (Treg)...
March 23, 2017: Journal of Infectious Diseases
https://www.readbyqxmd.com/read/28368517/enhanced-glycolytic-metabolism-contributes-to-cardiac-dysfunction-in-polymicrobial-sepsis
#16
Zhibo Zheng, He Ma, Xia Zhang, Fei Tu, Xiaohui Wang, Tuanzhu Ha, Min Fan, Li Liu, Jingjing Xu, Kaiking Yu, Ruitao Wang, John Kalbfleisch, Race Kao, David Williams, Chuanfu Li
Background: Cardiac dysfunction is present in >40% of sepsis patients and is associated with mortality rates of up to 70%. Recent evidence suggests that glycolytic metabolism plays a critical role in host defense and inflammation. Activation of Toll-like receptors on immune cells can enhance glycolytic metabolism. This study investigated whether modulation of glycolysis by inhibition of hexokinase will be beneficial to septic cardiomyopathy. Methods: Male C57B6/J mice were treated with a hexokinase inhibitor (2-deoxy-D-glucose, 2-DG, 0...
March 22, 2017: Journal of Infectious Diseases
https://www.readbyqxmd.com/read/28365585/ventilator-induced-lung-injury-increases-expression-of-endothelial-inflammatory-mediators-in-the-kidney
#17
Mark Hepokoski, Joshua A Englert, Rebecca M Baron, Laura E Crotty-Alexander, Mark M Fuster, Jeremy R Beitler, Atul Malhotra, Prabhleen Singh
In critical illness, such as sepsis or the acute respiratory distress syndrome, acute kidney injury (AKI) is common and associated with increased morbidity and mortality. Mechanical ventilation in critical illnesses is also a risk factor for AKI, but it is potentially modifiable. Injurious ventilation strategies may lead to the systemic release of inflammatory mediators from the lung due to ventilator induced lung injury (VILI). The systemic consequences of VILI are difficult to differentiate clinically from other systemic inflammatory syndromes, such as sepsis...
April 1, 2017: American Journal of Physiology. Renal Physiology
https://www.readbyqxmd.com/read/28345549/sub-anesthesia-dose-of-isoflurane-in-60-oxygen-reduces-inflammatory-responses-in-experimental-sepsis-models
#18
Yi Huang, Xiao-Xia Wang, Dong-Dong Sun, Ze-Xin Zhang, Wan-Wan Yang, Tian Shao, Han Han, Er-Fei Zhang, Zhong-Shu Pu, Zuo-Xu Hou, Hai-Long Dong, Li-Ze Xiong, Li-Chao Hou
BACKGROUND: Sepsis is a major cause of mortality in Intensive Care Units. Anesthetic dose isoflurane and 100% oxygen were proved to be beneficial in sepsis; however, their application in septic patients is limited because long-term hyperoxia may induce oxygen toxicity and anesthetic dose isoflurane has potential adverse consequences. This study was scheduled to find the optimal combination of isoflurane and oxygen in protecting experimental sepsis and its mechanisms. METHODS: The effects of combined therapy with isoflurane and oxygen on lung injury and sepsis were determined in animal models of sepsis induced by cecal ligation and puncture (CLP) or intraperitoneal injection of lipopolysaccharide (LPS) or zymosan...
April 5, 2017: Chinese Medical Journal
https://www.readbyqxmd.com/read/28342161/granulocyte-and-monocyte-adsorptive-apheresis-ameliorates-sepsis-in-rats
#19
Shuai Ma, Qingqing Xu, Bo Deng, Yin Zheng, Hongyan Tian, Li Wang, Feng Ding
BACKGROUND: Overwhelming activation of granulocytes and monocytes is central to inflammatory responses during sepsis. Granulocyte and monocyte adsorptive apheresis (GMA) is an extracorporeal leukocyte apheresis device filled with cellulose acetate beads and selectively adsorbs granulocytes and monocytes from the peripheral blood. METHODS: In this study, septic rats received the GMA treatment for 2 h at 18 h after cecal ligation and puncture. RESULTS: GMA selectively adsorbed activated neutrophils and monocytes from the peripheral blood, reduced serum inflammatory cytokine expression, and seemed to improve organ injuries and animal survival...
December 2017: Intensive Care Medicine Experimental
https://www.readbyqxmd.com/read/28337051/a-novel-cd48-based-analysis-of-sepsis-induced-mouse-myeloid-derived-suppressor-cell-compartments
#20
Bei Jia, Chenchen Zhao, Guoli Li, Yaxian Kong, Yaluan Ma, Qiuping Wang, Beibei Wang, Hui Zeng
Myeloid-derived suppressor cells (MDSCs) are a heterogeneous subset of cells that expands dramatically in many disease states and can suppress T-cell responses. MDSCs mainly include monocytic and granulocytic subpopulations that can be distinguished in mice by the expression of Ly6G and Ly6C cell surface markers. This identification system has been validated in experimental tumor models, but not in models of inflammation-associated conditions such as sepsis. We challenged growth factor independent 1 transcription repressor green fluorescent protein (Gfi1:GFP) knock-in reporter mice with cecal ligation and puncture surgery and found that CD11b(+)Ly6G(low)Ly6C(high) MDSCs in this sepsis model comprised both monocytic and granulocytic MDSCs...
2017: Mediators of Inflammation
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