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cecal ligation and. puncture

Yi-Kun Chen, Ying-Kun Xu, Hao Zhang, Jiang-Tao Yin, Xin Fan, Da-Dong Liu, Hai-Yan Fu, Bing Wan
Emodin is an anthraquinone derived from Chinese herb that exerts anti-inflammation effects. This study aimed to investigate whether emodin provides the protection for jejunum injury by inhibiting inflammation. We established a model of sepsis caused by cecal ligation and puncture. Forty-eight male Wistar rats were divided into four groups (n=12). Jejunum injury was assessed by pathological examination. The activity of pJAK1/pSTAT3 and protein levels of Bcl-2 and Bax were detected by Western blot analysis. Inflammatory factors IL-6, TNF-α and procalcitonin were detected by ELISA...
October 18, 2016: Biomedicine & Pharmacotherapy, Biomédecine & Pharmacothérapie
Ramazan Tetikcok, Huseyin Ayhan Kayaoglu, Zeki Ozsoy, Erdinc Yenidogan, Namik Ozkan, Alper Celik, Semsettin Sahin, Omer Faik Ersoy
OBJECTIVE: This study investigated and compared the effects of antibiotic and steroid lavage on survival and cytokine levels in an experimental abdominal sepsis model. BACKGROUND: In abdominal sepsis, abdominal lavage with saline or antibiotic solutions is a well-documented intervention known to have positive impact on survival; however, the effects of steroid lavage in abdominal sepsis have not yet been investigated. MATERIALS AND METHODS: Ninety-six Wistar rats were divided into 4 groups (n = 24)...
October 2016: Wounds: a Compendium of Clinical Research and Practice
Hitesh Soni, Adebowale Adebiyi
Apoptosis of renal tubular and glomerular cells during kidney disease involves activation of Fas ligand (FasL)-dependent death pathway. The significance of FasL in neonates with septic acute kidney injury (AKI) is unresolved, but an increase in renal FasL production, and/or infiltration of circulating FasL into the kidneys may occur following initial septic insult. Here, we examined whether soluble Fas ligand (sFasL) levels are altered during early phase of septic AKI in neonates. Six hours of polymicrobial sepsis elicited by cecal ligation and puncture (CLP) elevated serum C-reactive protein (CRP) (a bacteremia and sepsis marker) concentration in anesthetized and mechanically ventilated neonatal pigs...
October 21, 2016: Renal Failure
Liang Gao, Gülce Sila Gülcüler, Lieke Golbach, Helena Block, Alexander Zarbock, Ana Martin-Villalba
Integrin activation is crucial for regulation of leukocyte rolling, adhesion and trans-vessel migration during inflammation and occurs by engagement of myeloid cells through factors presented by inflamed vessels. However, endothelial-dependent mechanisms of myeloid cell recruitment are not fully understood. Here we show using an autoperfused flow chamber assay of whole blood neutrophils and intravital microscopy of the inflamed cremaster muscle that CD95 mediates leukocyte slow rolling, adhesion and transmigration upon binding of CD95-ligand (CD95L) that is presented by endothelial cells...
October 20, 2016: ELife
Hendrik Busse, Diane Bitzinger, Klaus Höcherl, Timo Seyfried, Michael Gruber, Bernhard M Graf, York A Zausig
INTRODUCTION: Mechanical and morphological ischemia and reperfusion (I/R) injury is reduced in septic hearts. The mechanism behind this "cardioprotection" is less well understood. As adenosine receptors play a major role for cardioprotection in non-septic hearts, we investigated the influence of adenosine receptors in a model of I/R in septic hearts. METHODS: SHAM operation or cecal ligation and puncture (CLP) was performed in adult male Wistar rats (n = 60)...
October 18, 2016: Cardiovascular Drugs and Therapy
Erica L Heipertz, Jourdan Harper, Wendy E Walker
IFN regulatory factor (IRF)3 plays a detrimental role in the cecal ligation and puncture (CLP) mouse model of sepsis. However, it is unclear which pathway activates IRF3 in this context. In this report we investigate two pathways that activate IRF3: the Stimulator of Interferon Genes (STING) pathway (which senses cytosolic DNA) and the TIR-domain-containing adapter-inducing interferon-β (TRIF) pathway (which sense dsRNA and LPS via Toll-like receptor (TLR) 3 and 4). Initially, we examine the impact of these pathways using a severe CLP model (∼90% mortality)...
October 17, 2016: Shock
Kristen T Crowell, David I Soybel, Charles H Lang
Muscle deconditioning is commonly observed in patients surviving sepsis. Little is known regarding the molecular mechanisms regulating muscle protein homeostasis during the recovery or convalescence phase. We adapted a sepsis-recovery mouse model that uses cecal ligation and puncture (CLP), followed 24 h later by cecal resection and antibiotic treatment, to identify putative cellular pathways regulating protein synthesis and breakdown in skeletal muscle. Ten days after CLP, body weight and food consumption did not differ between control and sepsis-recovery mice, but gastrocnemius weight was reduced...
October 5, 2016: Shock
Priscila de Souza, Karla Lorena Guarido, Karin Scheschowitsch, Luísa Mota da Silva, Maria Fernanda Werner, Jamil Assreuy, José Eduardo da Silva-Santos
We investigated long-lasting changes in endothelial and vascular function in adult rat survivors of severe sepsis induced by cecal ligation and puncture (CLP) model. For this, male Wistar rats (200-350g) had their cecum punctured once (non-transfixing hole) with a 14-gauge needle. Performed in this way, a mortality rate around 30% was achieved in the first 72h. The survivors, together with age-matched control rats (not subjected to CLP), were maintained in our holding room for 60 days (S60 group) and had the descending thoracic aorta processed for functional, histological, biochemical or molecular analyses...
September 30, 2016: Redox Biology
Asmaa Abd El-Aleem Abd El-Latif, Amany Ahmed Sayed, Amel Mahmoud Soliman, Sohair Ramadan Fahmy
OBJECTIVE: The present investigation explored the therapeutic potential effect of Sepia officinalis body tissue (SOBT) and Sepia officinalis polysaccharide (SOP) extracts, in animal model of sepsis [induced by cecal ligation and puncture (CLP)]. MATERIALS AND METHODS: Experimental animals were divided into 4 groups, Group 1: Sham control rats. Group 2: Septic rats. Group 3: Septic rats treated with methanolic extract of Sepia officinalis body tissue (SOBT) (500mg/kg body weight) for 2days...
October 6, 2016: Injury
Hajera Amatullah, Yuexin Shan, Brittany L Beauchamp, Patricia L Gali, Sahil Gupta, Tatiana Maron-Gutierrez, Edwin R Speck, Alison E Fox-Robichaud, Jennifer L Y Tsang, Shirley H J Mei, Tak W Mak, Patricia Rm Rocco, John W Semple, Haibo Zhang, Pingzhao Hu, John C Marshall, Duncan J Stewart, Mary-Ellen Harper, Patricia C Liaw, W Conrad Liles, Claudia C Dos Santos
RATIONALE & OBJECTIVES: Effective and rapid bacterial clearance is a fundamental determinant of outcome(s) in sepsis. DJ-1 is a well-established reactive oxygen species (ROS) scavenger. As cellular ROS status is pivotal to inflammation and bacterial killing, we determined the role of DJ-1 in bacterial sepsis. METHODS: We used cell and murine models with gain and loss of function experiments, plasma and cells from septic patients. MEASUREMENTS & RESULTS: Stimulation of bone marrow derived macrophages (BMM) with endotoxin resulted in increased DJ-1 mRNA and protein expression...
October 13, 2016: American Journal of Respiratory and Critical Care Medicine
Javier L Prieto, Hao-Wei Su, Han Wei Hou, Miguel Pinilla Vera, Bruce D Levy, Rebecca M Baron, Jongyoon Han, Joel Voldman
Sepsis is a potentially lethal condition that may be ameliorated through early monitoring of circulating activated leukocytes for faster stratification of severity of illness and improved administration of targeted treatment. Characterization of the intrinsic electrical properties of leukocytes is label-free and can provide a quick way to quantify the number of activated cells as sepsis progresses. Iso-dielectric separation (IDS) uses dielectrophoresis (DEP) to characterize the electrical signatures of cells...
October 7, 2016: Lab on a Chip
Yuan Zong, Huali Zhang
Sepsis is a serious medical problem and is one of the main causes of high mortality in intensive care units. Fifty percent of patients with severe sepsis will develop acute lung injury (ALI). Amentoflavone (AMF) is a polyphenolic compound possessing potent anti-inflammatory activities. The study aimed to explore the protective effects of AMF against ALI in cecal ligation and puncture (CLP)-induced septic rats. The results showed that AMF administration protected against septic ALI, as reflected by marked amelioration of histological injury of lung tissues and decrease of pulmonary edema in CLP-treated rats...
October 8, 2016: Acta Biochimica Polonica
Minchan Gil, Yun Kyu Kim, Sang Bum Hong, Kyung Jin Lee
Naringin, a flavanone glycoside extracted from various plants, has a wide range of pharmacological effects. In the present study, we investigated naringin's mechanism of action and its inhibitory effect on lipopolysaccharide-induced tumor necrosis factor-alpha and high-mobility group box 1 expression in macrophages, and on death in a cecal ligation and puncture induced mouse model of sepsis. Naringin increased heme oxygenase 1 expression in peritoneal macrophage cells through the activation of adenosine monophosphate-activated protein kinase, p38, and NF-E2-related factor 2...
2016: PloS One
Silvia Cellone Trevelin, Célio Xavier Dos Santos, Raphael Gomes Ferreira, Larissa de Sá Lima, Rangel Leal Silva, Cristoforo Scavone, Rui Curi, José Carlos Alves-Filho, Thiago Mattar Cunha, Pérsio Roxo-Júnior, Maria-Célia Cervi, Francisco Rafael Martins Laurindo, John Stephen Hothersall, Andrew M Cobb, Min Zhang, Aleksandar Ivetic, Ajay M Shah, Lucia Rossetti Lopes, Fernando Queiroz Cunha
The reactive-oxygen-species-(ROS)-generating-enzyme Nox2 is essential for leukocyte anti-microbial activity. However its role in cellular redox homeostasis and, consequently, in modulating intracellular signaling pathways remains unclear. Herein, we show Nox2 activation favors thioredoxin-1 (TRX-1)/p40phox interaction, which leads to exclusion of TRX-1 from the nucleus. In contrast, the genetic deficiency of Nox2 or its pharmacological inhibition with apocynin (APO) results in reductive stress after lipopolysaccharide-(LPS)-cell stimulation, which causes nuclear accumulation of TRX-1 and enhanced transcription of inflammatory mediators through nuclear-factor-(NF)-κB...
October 4, 2016: Scientific Reports
He Ma, Xiaohui Wang, Tuanzhu Ha, Ming Gao, Li Liu, Ruitao Wang, Kaijiang Yu, John H Kalbfleisch, Race L Kao, David L Williams, Chuanfu Li
BACKGROUND:  This study examined the effect of miR-125b on sepsis-induced cardiac dysfunction. METHODS:  Mouse hearts were transfected with lentivirus expressing miR-125b (LmiR-125b) seven days prior to cecal ligation and puncture (CLP) induced sepsis. Cardiac function was examined by echocardiography before and 6 hours after CLP (n=6/group). Survival outcome was monitored following CLP sepsis (n=12/group). RESULTS:  LmiR-125b transfection significantly attenuated CLP sepsis-induced cardiac dysfunction...
September 28, 2016: Journal of Infectious Diseases
Ming Xin Li, Jun Feng Liu, Jian Da Lu, Ying Zhu, Ding Wei Kuang, Jian Bing Xiang, Peng Sun, Wei Wang, Jun Xue, Yong Gu, Chuan Ming Hao
BACKGROUND: The object of this study is to explore whether the plasmadiafiltration (PDF) is more effective in improving the intestinal mucosal barrier function by removing more key large molecular inflammatory mediators and then prolonging the survival time. METHODS: Totally, 24 porcine sepsis models induced by cecal ligation and puncture (CLP) operation were randomly divided into three groups: PDF group, high-volume hemofiltration (HVHF) group, and control group, and received 8 h treatment, respectively...
December 2016: Intensive Care Medicine Experimental
Kendra N Iskander, Max Vaickus, Elizabeth R Duffy, Daniel G Remick
Antimicrobial therapy for sepsis has beneficial effects, but prolonged use fosters emergence of resistant microorganisms, increases cost, and secondary infections. We tested whether 3 days versus 5 days of antibiotics in the murine model of cecal ligation and puncture (CLP) negatively influences outcomes. Following CLP mice were randomized to receive the antibiotic imipenem-cilastatin (25mg/kg) in dextrose 5% in Lactated Ringer's solution every 12 hours for either three or five days. Serial monitoring over 28 days included body weight, temperature, pulse oximetry, and facial vein sampling for hematological analysis and glucose...
2016: PloS One
Ken-Ichiro Tanaka, Fumiya Tamura, Toshifumi Sugizaki, Masahiro Kawahara, Keiji Kuba, Yumiko Imai, Tohru Mizushima
RATIONALE: For acute respiratory distress syndrome (ARDS), mechanical ventilation (MV) is a life-saving intervention without alternative, however, MV can cause ventilator-induced lung injury (VILI). Reactive oxygen species (ROS) play important roles in the pathogenesis of both ARDS and VILI. Lecithinized superoxide dismutase (PC-SOD) has overcome limitations of SOD such as low tissue affinity and low stability in plasma. OBJECTIVES: In this study, we have examined the effect of PC-SOD on tissue injury, edema and inflammation in the lung and other organs of mice subjected to cecal ligation and puncture (CLP), lipopolysaccharide (LPS) administration or MV...
September 26, 2016: American Journal of Respiratory Cell and Molecular Biology
Jing Xu, Ke-Qi Wang, Wei-Heng Xu, Ying-Hua Li, Yang Qi, Hong-Yuan Wu, Jian-Zhong Li, Zhi-Gao He, Hong-Gang Hu, Yan Wang, Jun-Ping Zhang
BACKGROUND:  MASM, a novel derivative of matrine, has inhibitory effect on activation of macrophages, dendritic cells and hepatic stellate cells and binds to ribosomal protein S5 (RPS5). This study was designed to evaluate effect of MASM on murine established lethal sepsis and its mechanisms. METHODS:  Mouse peritoneal macrophages and RAW264.7 cells that were infected with recombinant lentiviruses encoding shRPS5 were incubated with lipopolysaccharides (LPS) in the absence or presence of MASM in vitro...
September 22, 2016: Journal of Infectious Diseases
Hayato Yamashita, Michiko Ishikawa, Taketo Inoue, Makoto Usami, Yu Usami, Joji Kotani
BACKGROUND: Dysregulation of glucose metabolism, including hyperglycemia with insulin resistance, is commonly observed in critically ill patients. Interleukin-18 (IL-18) improves the insulin resistance associated with obesity, but the relationship between IL-18 and glucose metabolism in sepsis was unclear. The purpose of this study was to investigate the influence of IL-18 on hyperglycemia during sepsis. METHODS: Sepsis was induced using cecal ligation and puncture (CLP) in wild type (WT) mice, IL-18 knockout (KO) mice, and IL-18 KO mice pretreated with recombinant IL-18...
September 19, 2016: Shock
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