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https://www.readbyqxmd.com/read/28212865/casein-kinase-2-interacting-protein-1-regulates-m1-and-m2-inflammatory-macrophage-polarization
#1
Yuhan Chen, Wen Liu, Yiwu Wang, Luo Zhang, Jun Wei, Xueli Zhang, Fuchu He, Lingqiang Zhang
The importance of macrophage plasticity, albeit being discovered recently, has been highlighted in a broad spectrum of biological processes operative in physiological and pathological environments. Macrophage polarized activation and inactivation has profound effects on immune and inflammatory responses with several major pathways being elucidated in the past few years. However, transcriptional regulation mechanisms governing macrophage polarization is still preliminary. In this study, we identify the Casein Kinase 2 Interacting Protein 1 (CKIP-1) as a molecular toggle manipulating macrophage speciation...
February 14, 2017: Cellular Signalling
https://www.readbyqxmd.com/read/28203235/chenopodium-ambrosioides-l-improves-phagocytic-activity-and-decreases-bacterial-growth-and-the-systemic-inflammatory-response-in-sepsis-induced-by-cecal-ligation-and-puncture
#2
Carlos E P Rios, Afonso G Abreu, Jose A F Braga Filho, Johnny R Nascimento, Rosane N M Guerra, Flávia M M Amaral, Márcia C G Maciel, Flávia R F Nascimento
Chenopodium ambrosioides L. (Amaranthaceae) is often used in different kinds of vegetal preparations for medicinal purposes in many clinical situations. Some studies have demonstrated its anti-inflammatory and immunomodulatory properties. The aim of this work was to investigate the effect of prophylactic treatment with the hydroalcoholic crude extract (HCE) of C. ambrosioides and its hexanic fraction (HEX) on the control of bacterial growth, the activation of phagocytes and the control of the systemic inflammatory response in a sepsis experimental model...
2017: Frontiers in Microbiology
https://www.readbyqxmd.com/read/28202686/simvastatin-pre-treatment-improves-survival-and-mitochondrial-function-in-a-three-day-fluid-resuscitated-rat-model-of-sepsis
#3
Jerome Morel, Iain Hargreaves, David Brealey, Viruna Neergheen, Janne T Backman, Sandro Lindig, Marcus Bläss, Michael Bauer, Daniel F McAuley, Mervyn Singer
Statins may offer protective effects in sepsis through anti-inflammatory, mitochondrial protection and other actions. We thus evaluated the effects of simvastatin on survival, organ and mitochondrial function, tissue and plasma ubiquinone levels and liver transcriptomics in a 3-day rat model of sepsis. Comparisons of rat plasma simvastatin and ubiquinone levels were made against levels sampled in blood from patients with acute lung injury (ALI) enrolled into a trial of statin therapy. Animals received simvastatin by gavage either pre- or post-induction of faecal peritonitis...
February 15, 2017: Clinical Science (1979-)
https://www.readbyqxmd.com/read/28189063/the-nf-%C3%AE%C2%BAb-inhibitor-celastrol-attenuates-acute-hepatic-dysfunction-induced-by-cecal-ligation-and-puncture-in-rats
#4
Ghada S El-Tanbouly, Mohammed S El-Awady, Nermeen A Megahed, Hatem A Salem, Hassan A El-Kashef
Acute hepatic dysfunction associating sepsis is mediated mainly by toll-like receptor-4 (TLR-4)/nuclear factor kappa-B (NF-κB) inflammatory pathway. This study explores potential hepatoprotective effect of the NF-κB inhibitor celastrol in cecal ligation and puncture (CLP) model in rats. Protective effect of celastrol (1mg/kg, i.p., 1h before CLP) was illustrated after 24h by preventing CLP-induced hepatic histopathological changes and elevation in serum hepatic biomarkers [alanine aminotransferase (ALT), aspartate aminotransferase (AST), total bilirubin (TB) and gamma aminotransferase (γ-GT)] without affecting mortality...
February 4, 2017: Environmental Toxicology and Pharmacology
https://www.readbyqxmd.com/read/28187038/minocycline-prevents-the-impairment-of-hippocampal-long-term-potentiation-in-the-septic-mouse
#5
Koji Hoshino, Mineji Hayakawa, Yuji Morimoto
Sepsis-associated encephalopathy is a major complication during sepsis, and an effective treatment remains unknown. Although minocycline (MINO) has neuroprotective effects and is an attractive candidate for treating sepsis-associated encephalopathy, the effect of MINO on synaptic plasticity during sepsis is still unclear. In the present study, we investigated the effects of MINO on long-term potentiation (LTP) in the hippocampus in a cecal ligation and puncture (CLP) mouse model. We divided mice into 4 groups; (1) sham + vehicle, (2) sham + MINO (60 mg/kg, i...
February 9, 2017: Shock
https://www.readbyqxmd.com/read/28177773/gastroprotective-and-antielastase-effect-of-protein-inhibitors-from-erythrina-velutina-seeds-in-an-experimental-ulcer-model
#6
Vanessa Cristina Oliveira de Lima, Richele Janaína de Araújo Machado, Norberto Monteiro, Christina da Silva Camillo, Alexandre Coelho Serquiz, Adeliana Silva de Oliveira, Fabiola Rufino, Bruna Leal Lima Maciel, Adriana Ferreira Uchôa, Elizeu Antunes Santos, Ana Heloneida de Araújo Morais
Trypsin and chymotrypsin inhibitors from Erythrina velutina seeds have been previously isolated by our group. In previous studies using a sepsis model, we demonstrated the anti-tumor and anti-inflammatory action of these compounds. This study aimed to evaluate the gastroprotective and antielastase effect of protein inhibitors from Erythrina velutina seeds in an experimental stress induced ulcer model. Two protein isolates from E. velutina seeds, with antitrypsin (PIAT) and anti-chymotrypsin (PIAQ) activities were tested...
September 12, 2016: Biochemistry and Cell Biology, Biochimie et Biologie Cellulaire
https://www.readbyqxmd.com/read/28173746/neurodegenerative-changes-and-neuroapoptosis-induced-by-systemic-lipopolysaccharide-administration-are-reversed-by-dexmedetomidine-treatment-in-mice
#7
Qiaoqing Ning, Zhaoguo Liu, Xiuhua Wang, Ruyi Zhang, Jing Zhang, Meizi Yang, Hongliu Sun, Fang Han, Wenxiang Zhao, Xiuli Zhang
BACKGROUND: Sepsis-associated encephalopathy (SAE) is a frequent and nasty complication of sepsis, associated with patients increased risk of death and long-term brain dysfunctions. OBJECTIVE: This study aimed to explore the effect of dexmedetomidine (Dex), an anesthetic adjuvant, on the development of SAE. METHODS: Lipopolysaccharide (LPS, 10 mg/kg) was intraperitoneally injected to male BALB/c mice to induce sepsis. Dex (25 μg/kg) was given intraperitoneally immediately after LPS injection...
February 8, 2017: Neurological Research
https://www.readbyqxmd.com/read/28168403/carbon-monoxide-releasing-molecule-3-improves-myocardial-function-in-mice-with-sepsis-by-inhibiting-nlrp3-inflammasome-activation-in-cardiac-fibroblasts
#8
Wenbo Zhang, Aibin Tao, Ting Lan, Gediminas Cepinskas, Raymond Kao, Claudio M Martin, Tao Rui
The NLRP3 inflammasome is an intracellular multiple-protein complex that controls the maturation and release of interleukin (IL)-1β and IL-18. Endogenous carbon monoxide (CO) is anti-inflammatory. The aim of this study was to assess the effects/mechanisms of CO-releasing molecule-3 (CORM-3)-dependent modulation of the NLRP3 inflammasome in cardiac fibroblasts (CF) and its effect on myocardial function in sepsis. CF were treated with CORM-3 or inactive CORM-3 (iCORM-3) before NLRP3 inflammasome priming with lipopolysaccharides (LPS) or following activation with adenosine triphosphate (ATP)...
March 2017: Basic Research in Cardiology
https://www.readbyqxmd.com/read/28165033/micheliolide-provides-protection-of-mice-against-staphylococcus-aureus-and-mrsa-infection-by-down-regulating-inflammatory-response
#9
Xinru Jiang, Yuli Wang, Yifei Qin, Weigang He, Adel Benlahrech, Qingwen Zhang, Xin Jiang, Zhenhui Lu, Guang Ji, Yuejuan Zheng
A major obstacle to therapy in intensive care units is sepsis caused by severe infection. In recent years gram-positive (G(+)) bacteria, most commonly staphylococci, are thought to be the main pathogens. Micheliolide (MCL) was demonstrated to provide a therapeutic role in rheumatoid arthritis, inflammatory intestinal disease, colitis-associated cancer, and lipopolysaccharide (LPS, the main component of G(-) bacterial cell wall) induced septic shock. We proved here that MCL played an anti-inflammatory role in Staphylococcus aureus (S...
February 6, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28153725/differences-in-the-effects-of-four-trpv1-channel-antagonists-on-lipopolysaccharide-induced-cytokine-production-and-cox-2-expression-in-murine-macrophages
#10
Yuki Ninomiya, Sei-Ichi Tanuma, Mitsutoshi Tsukimoto
Sepsis is a systemic inflammatory response syndrome triggered by lipopolysaccharide (LPS), an outer membrane component of gram-negative bacteria, and cytokine production via LPS-induced macrophage activation is deeply involved in its pathogenesis. Effective therapy of sepsis has not yet been established. However, it was reported that transient receptor potential vanilloid 1 (TRPV1) channel antagonist capsazepine (CPZ; a capsaicin analogue) attenuates sepsis in a murine model [Ang et al., PLoS ONE 6(9) (2011) e24535; J...
March 11, 2017: Biochemical and Biophysical Research Communications
https://www.readbyqxmd.com/read/28149560/glucose-insulin-potassium-correlates-with-hemodynamic-improvement-in-patients-with-septic-myocardial-dysfunction
#11
Won-Young Kim, Moon Seong Baek, Young Shin Kim, Jarim Seo, Jin Won Huh, Chae-Man Lim, Younsuck Koh, Sang-Bum Hong
BACKGROUND: Glucose-insulin-potassium (GIK) demonstrates a cardioprotective effect by providing metabolic support and anti-inflammatory action, and may be useful in septic myocardial depression. The aim of this study was to examine the relationship between GIK and hemodynamic outcomes in septic shock patients with myocardial depression. METHODS: Between October 2012 and March 2014, 45 patients in the intensive care unit who fulfilled the criteria for severe sepsis/septic shock and were treated with GIK were recruited...
December 2016: Journal of Thoracic Disease
https://www.readbyqxmd.com/read/28145661/the-effects-of-remifentanil-on-expression-of-high-mobility-group-box-1-in-septic-rats
#12
Kwon Hui Seo, Jin Woo Choi, Hong Soo Jung, Hansol Yoo, Jin Deok Joo
High mobility group box 1 (HMGB1) is a pivotal mediator of sepsis progression. Remifentanil, an opioid agonist, has demonstrated anti-inflammatory effects in septic mice. However, it is not yet known whether remifentanil affects the expression of HMGB1. We investigated the effects of remifentanil on HMGB1 expression and the underlying mechanism in septic rats. Forty-eight male Sprague-Dawley rats were randomly divided into 3 groups; a sham group, a cecal ligation and puncture (CLP) group, and a CLP with remifentanil treatment (Remi) group...
March 2017: Journal of Korean Medical Science
https://www.readbyqxmd.com/read/28130261/impact-of-thrombosis-on-pulmonary-endothelial-injury-and-repair-following-sepsis
#13
Colin Evans, You-Yang Zhao
The prevailing morbidity and mortality in sepsis are largely due to multiple organ dysfunction (MOD), most commonly lung injury, as well as renal and cardiac dysfunction. Despite recent advances in defining many aspects of the pathogenesis of sepsis-related MOD, including acute respiratory distress syndrome (ARDS), there are currently no effective pharmacological or cell-based treatments for the disease. Human and animal studies have shown that pulmonary thrombosis is common in sepsis-induced ARDS, and pre-clinical studies have shown that anti-coagulation may improve outcome following sepsis challenge...
January 27, 2017: American Journal of Physiology. Lung Cellular and Molecular Physiology
https://www.readbyqxmd.com/read/28127437/effect-of-extracorporeal-cytokine-removal-on-vascular-barrier-function-in-a-septic-shock-patient
#14
Sascha David, Kristina Thamm, Bernhard M W Schmidt, Christine S Falk, Jan T Kielstein
BACKGROUND: Sepsis and septic shock are major healthcare problems, affecting millions of individuals around the world each year. Pathophysiologically, septic multiple organ dysfunction (MOD) is a life-threatening condition caused by an overwhelming systemic inflammatory response of the host's organism to an infection. We experimentally tested if high circulating cytokine levels might increase vascular permeability-a critical hallmark of the disease-and if this phenomenon can be reversed by therapeutic cytokine removal (CytoSorb®) in an exemplary patient...
2017: Journal of Intensive Care
https://www.readbyqxmd.com/read/28125526/mir-155-alleviates-septic-lung-injury-by-inducing-autophagy-via-inhibition-of-transforming-growth-factor-%C3%AE-activated-binding-protein-2
#15
Fen Liu, Cheng Nie, Ning Zhao, Yan Wang, Yang Liu, Yong Li, Zhenguo Zeng, Chengzhi Ding, Qiang Shao, Cheng Qing, Liang Xia, Zhiyong Peng, Kejian Qian
BACKGROUND: The anti-inflammatory effect of miR-155 was closely linked to transforming growth factor-β-activated kinase-1-binding protein 2 (TAB2) and autophagy. This study investigated the role of miR-155 in attenuation of septic lung injury through TAB2 and autophagy in mouse model and in vitro. METHODS: Patients who underwent fiberoptic bronchoscope examination with or without septic lung injury were recruited for collection of bronchoalveolar lavage fluid (BALF) samples...
January 25, 2017: Shock
https://www.readbyqxmd.com/read/28125029/excavatolide-b-modulates-the-electrophysiological-characteristics-and-calcium-homeostasis-of-atrial-myocytes
#16
Hwong-Ru Hwang, Buh-Yuan Tai, Pao-Yun Cheng, Ping-Nan Chen, Ping-Jyun Sung, Zhi-Hong Wen, Chih-Hsueng Hsu
Severe bacterial infections caused by sepsis always result in profound physiological changes, including fever, hypotension, arrhythmia, necrosis of tissue, systemic multi-organ dysfunction, and finally death. The lipopolysaccharide (LPS) provokes an inflammatory response under sepsis, which may increase propensity to arrhythmogenesis. Excavatolide B (EXCB) possesses potent anti-inflammatory effects. However, it is not clear whether EXCB could modulate the electrophysiological characteristics and calcium homeostasis of atrial myocytes...
January 24, 2017: Marine Drugs
https://www.readbyqxmd.com/read/28120021/matrix-metalloproteinase-14-triggers-an-anti-inflammatory-proteolytic-cascade-in-endotoxemia
#17
Alina Aguirre, Jorge Blázquez-Prieto, Laura Amado-Rodriguez, Inés López-Alonso, Estefanía Batalla-Solís, Adrián González-López, Moisés Sánchez-Pérez, Carlos Mayoral-Garcia, Ana Gutiérrez-Fernández, Guillermo M Albaiceta
: ᅟ: Matrix metalloproteinases can modulate the inflammatory response through processing of cyto- and chemokines. Among them, MMP-14 is a non-dispensable collagenase responsible for the activation of other enzymes, triggering a proteolytic cascade. To identify the role of MMP-14 during the pro-inflammatory response, wildtype and Mmp14 (-/-) mice were challenged with lipopolysaccharide. MMP-14 levels decreased after endotoxemia. Mutant animals showed 100% mortality, compared to 50% in wildtype mice...
January 24, 2017: Journal of Molecular Medicine: Official Organ of the "Gesellschaft Deutscher Naturforscher und Ärzte"
https://www.readbyqxmd.com/read/28116780/r1-autonomic-nervous-system-in-acute-kidney-injury
#18
REVIEW
Dagmara Hering, Pawel J Winklewski
Acute kidney injury (AKI) is a rapid loss of kidney function resulting in accumulation of end metabolic products and associated abnormalities in fluid, electrolyte and acid-base homeostasis. The pathophysiology of AKI is complex and multifactorial involving numerous vascular, tubular and inflammatory pathways. Neurohumoral activation with heightened activity of the sympathetic nervous system and renin-angiotensin-aldosterone system play a critical role in this scenario. Inflammation and/or local renal ischaemia are underlying mechanisms triggering renal tissue hypoxia and resultant renal microcirculation dysfunction; a common feature of AKI occurring in numerous clinical conditions leading to a high morbidity and mortality rate...
February 2017: Clinical and Experimental Pharmacology & Physiology
https://www.readbyqxmd.com/read/28114167/leptin-protects-against-mortality-and-organ-dysfunction-in-a-two-hit-trauma-sepsis-model-and-is-il-6-dependent
#19
Lukas Leopold Negrin, Andreas Jahn, Martijn van Griensven
INTRODUCTION: Leptin is thought to play an important role in the regulation of the immune system. In patients, leptin is inversely proportional to interleukin-6 (IL-6) levels. Thus, the objective of our study was to evaluate a dose-dependent therapeutic impact of leptin with possible IL-6-dependency on immune actions and outcome in a trauma/sepsis model. MATERIALS AND METHODS: Sixty-nine wild-type and 63 IL-6 mice were subdivided into three groups: trauma/sepsis group (first hit: femur fracture and hemorrhage; second hit: cecal ligation and puncture 2 days later), trauma group (first hit and laparotomy), sham group (laparotomy only)...
January 20, 2017: Shock
https://www.readbyqxmd.com/read/28112185/lyrm03-an-ubenimex-derivative-attenuates-lps-induced-acute-lung-injury-in-mice-by-suppressing-the-tlr-4-signaling-pathway
#20
Hui-Qiong He, Ya-Xian Wu, Yun-Juan Nie, Jun Wang, Mei Ge, Feng Qian
Toll-like receptor 4 (TLR4)-mediated signaling plays a critical role in sepsis-induced acute lung injury (ALI). LYRM03 (3-amino-2-hydroxy-4-phenyl-valyl-isoleucine) is a novel derivative of ubenimex, a widely used antineoplastic medicine. We previously found that LYRM03 has anti-inflammatory effects in cecal ligation puncture mouse model. In this study we determined whether LYRM03 attenuated LPS-induced ALI in mice. LPS-induced ALI mouse model was established by challenging the mice with intratracheal injection of LPS (5 mg/kg), which was subsequently treated with LYRM03 (10 mg/kg, ip)...
January 23, 2017: Acta Pharmacologica Sinica
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