Read by QxMD icon Read

acute lung injury and sepsis

Corey J Langer, Shirish M Gadgeel, Hossein Borghaei, Vassiliki A Papadimitrakopoulou, Amita Patnaik, Steven F Powell, Ryan D Gentzler, Renato G Martins, James P Stevenson, Shadia I Jalal, Amit Panwalkar, James Chih-Hsin Yang, Matthew Gubens, Lecia V Sequist, Mark M Awad, Joseph Fiore, Yang Ge, Harry Raftopoulos, Leena Gandhi
BACKGROUND: Limited evidence exists to show that adding a third agent to platinum-doublet chemotherapy improves efficacy in the first-line advanced non-small-cell lung cancer (NSCLC) setting. The anti-PD-1 antibody pembrolizumab has shown efficacy as monotherapy in patients with advanced NSCLC and has a non-overlapping toxicity profile with chemotherapy. We assessed whether the addition of pembrolizumab to platinum-doublet chemotherapy improves efficacy in patients with advanced non-squamous NSCLC...
October 10, 2016: Lancet Oncology
Yujiro Matsuishi, Subrina Jesmin, Satoru Kawano, Sakuramoto Hideaki, Nobutake Shimojo, Chishimba Nathan Mowa, Shila Akhtar, Sohel Zaedi, Tanzila Khatun, Yoshiya Tsunoda, Takumi Kiwamoto, Nobuyuki Hizawa, Yoshiaki Inoue, Taro Mizutani
Among the dysfunctions and pathologies associated with sepsis, the underlying molecular mechanisms of sepsis-induced acute lung injury (ALI) are poorly understood. Endothelin (ET)-1, a potent vasoconstrictor and pro-inflammatory peptide, is known to be involved in the pathogenesis of ALI in a rat model of sepsis. Here, we investigated whether landiolol hydrochloride, an ultra-short-acting β-blocker, plays a crucial role in ameliorating and attenuating LPS-induced ALI through modulation of the ET-1 system. Male Wistar rats at 8weeks of age were administered with either saline or lipopolysaccharide (LPS) for three hours (3h) and some of the LPS-administered rats were continuously treated with landiolol for 3h...
October 11, 2016: Life Sciences
Surat Tongyoo, Chairat Permpikul, Wasineenart Mongkolpun, Veerapong Vattanavanit, Suthipol Udompanturak, Mehmet Kocak, G Umberto Meduri
BACKGROUND: Authors of recent meta-analyses have reported that prolonged glucocorticoid treatment is associated with significant improvements in patients with severe pneumonia or acute respiratory distress syndrome (ARDS) of multifactorial etiology. A prospective randomized trial limited to patients with sepsis-associated ARDS is lacking. The objective of our study was to evaluate the efficacy of hydrocortisone treatment in sepsis-associated ARDS. METHODS: In this double-blind, single-center (Siriraj Hospital, Bangkok), randomized, placebo-controlled trial, we recruited adult patients with severe sepsis within 12 h of their meeting ARDS criteria...
October 15, 2016: Critical Care: the Official Journal of the Critical Care Forum
David L Ebenezer, Panfeng Fu, Vidyani Suryadevara, Yutong Zhao, Viswanathan Natarajan
Cellular level of sphingosine-1-phosphate (S1P), the simplest bioactive sphingolipid, is tightly regulated by its synthesis catalyzed by sphingosine kinases (SphKs) 1 & 2 and degradation mediated by S1P phosphatases, lipid phosphate phosphatases, and S1P lyase. The pleotropic actions of S1P are attributed to its unique inside-out (extracellular) signaling via G-protein-coupled S1P1-5 receptors, and intracellular receptor independent signaling. Additionally, S1P generated in the nucleus by nuclear SphK2 modulates HDAC1/2 activity, regulates histone acetylation, and transcription of pro-inflammatory genes...
September 29, 2016: Advances in Biological Regulation
Gianluca Villa, Mauro Neri, Rinaldo Bellomo, Jorge Cerda, A Raffaele De Gaudio, Silvia De Rosa, Francesco Garzotto, Patrick M Honore, John Kellum, Anna Lorenzin, Didier Payen, Zaccaria Ricci, Sara Samoni, Jean-Louis Vincent, Julia Wendon, Marta Zaccaria, Claudio Ronco
This article reports the conclusions of the second part of a consensus expert conference on the nomenclature of renal replacement therapy (RRT) techniques currently utilized to manage acute kidney injury and other organ dysfunction syndromes in critically ill patients. A multidisciplinary approach was taken to achieve harmonization of definitions, components, techniques, and operations of the extracorporeal therapies. The article describes the RRT techniques in detail with the relevant technology, procedures, and phases of treatment and key aspects of volume management/fluid balance in critically ill patients...
October 10, 2016: Critical Care: the Official Journal of the Critical Care Forum
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
Peter Bentzer, Jane Fisher, HyeJin Julia Kong, Mattias Mörgelin, John H Boyd, Keith R Walley, James A Russell, Adam Linder
BACKGROUND: Elevated plasma levels of heparin-binding protein (HBP) are associated with risk of organ dysfunction and mortality in sepsis, but little is known about causality and mechanisms of action of HBP. The objective of the present study was to test the hypothesis that HBP is a key mediator of the increased endothelial permeability observed in sepsis and to test potential treatments that inhibit HBP-induced increases in permeability. METHODS: Association between HBP at admission with clinical signs of increased permeability was investigated in 341 patients with septic shock...
December 2016: Intensive Care Medicine Experimental
Nadia Roumeliotis, Thierry Ducruet, Scot T Bateman, Adrienne G Randolph, Jacques Lacroix, Guillaume Emeriaud
BACKGROUND: There are no well-designed prospective studies evaluating transfusion practices in pediatric trauma. We sought to describe red blood cell (RBC) transfusion practices in trauma patients who were admitted to a pediatric intensive care unit (PICU). STUDY DESIGN AND METHODS: This study is a post-hoc analysis of a prospective, 6-month observational study in 30 PICUs. We studied a total of 580 patients aged less than 18 years who had been admitted to a PICU for more than 48 hours, including 95 who were trauma patients...
October 2, 2016: Transfusion
Liang Luo, Ciara M Shaver, Zhiguo Zhao, Tatsuki Koyama, Carolyn S Calfee, Julie A Bastarache, Lorraine B Ware
BACKGROUND: Direct (pulmonary) and indirect (extrapulmonary) ARDS are distinct syndromes with important pathophysiologic differences. The goal of this study was to determine whether clinical characteristics and predictors of mortality differ between direct or indirect ARDS. METHODS: A retrospective observational cohort study of 417 ARDS patients. Each patient was classified as having direct (pneumonia or aspiration, n=250) or indirect ARDS (non-pulmonary sepsis or pancreatitis, n=167)...
September 20, 2016: Chest
Sailaja Ghanta, Konstantin Tsoyi, Xiaoli Liu, Kiichi Nakahira, Bonna Ith, Anna A Coronata, Laura E Fredenburgh, Joshua A Englert, Claude A Piantadosi, Augustine M K Choi, Mark A Perrella
Oxidative stress resulting from inflammatory responses that occur during acute lung injury and sepsis can initiate changes in mitochondrial function. Autophagy regulates cellular processes in the setting of acute lung injury, sepsis, and oxidative stress by modulating the immune response and facilitating turnover of damaged cellular components. We have shown that mesenchymal stromal cells (MSCs) improve survival in murine models of sepsis by also regulating the immune response. However, the effect of autophagy on MSC and MSC mitochondrial function during oxidative stress is unknown...
September 16, 2016: American Journal of Respiratory Cell and Molecular Biology
Zarife Nigâr Özdemir-Kumral, Dilek Özbeyli, Ahmet Faruk Özdemir, M Buğra Karaaslan, Kübra Kaytaz, Mustafa F Kara, Olgu Enis Tok, Feriha Ercan, Berrak Ç Yeğen
INTRODUCTION: Despite its adverse health consequences, tobacco smoking is associated with lower incidence of several neurodegenerative and inflammatory diseases. The present study is aimed to show the effects of nicotine, major tobacco constituent, on five organs targeted by sepsis. METHODS: Male Wistar albino rats received tap water with (5 mg/kg) or without nicotine for 14 days. Under ketamine anesthesia, sepsis (n=50) was induced by ligation and punction of the cecum, while sham group (n=8) had only laparotomy...
August 3, 2016: Nicotine & Tobacco Research: Official Journal of the Society for Research on Nicotine and Tobacco
Niteen D Karnik, Anish V Gupta
Acute respiratory distress syndrome (ARDS) is a fulminant clinical disorder of varied etiology, characterized by diffuse lung injury and severe hypoxemia. It is a leading cause of ICU admission and the associated high mortality has sparked a lot of research on etiology, outcome, scoring systems, mortality predictors, biomarkers including inflammatory cytokines and even genomics in ARDS. The previously used AECC (American European Consensus Conference) definition (1994) of ARDS was replaced by the recent Berlin definition (2012) so as to improve its validity and reliability...
November 2015: Journal of the Association of Physicians of India
Lemeng Zhang, Songyun Deng, Shuangping Zhao, Yuhang Ai, Lina Zhang, Pinhua Pan, Xiaoli Su, Hongyi Tan, Dongdong Wu
The pathogenesis of sepsis is complex. Mitochondrial dysfunction, which is responsible for energy metabolism, intrinsic apoptotic pathway, oxidative stress, and systemic inflammatory responses, is closely related with severe sepsis induced death. Mitochondria DNA (mtDNA) contain un-methylated cytosine phosphate guanine (CpG) motifs, which exhibit immune stimulatory capacities. The aim of this study was to investigate the role and mechanism of mtDNA release on lipopolysaccharide (LPS) induced acute lung injury (ALI) and systemic inflammation...
2016: International Journal of Molecular Sciences
Smruti B Vaishnav, Bhalendu Vaishnav, Kailas N Desai, Nitin S Raithatha, Neeta S Bose
BACKGROUND: There is a dearth of studies on the clinical profile and therapeutic aspects of critically ill obstetric patients from rural areas, especially those requiring tertiary care support and ventilator therapy. METHODS: We retrospectively analysed the aetiological, clinical, interventional and outcome-related factors of obstetric patients requiring mechanical ventilation in western India. We analysed factors that influence seeking of antenatal care, pregnancy and its complications, severity assessment score, indications and initiation of mechanical ventilation, multiorgan failure and their correlation with maternal mortality...
March 2016: National Medical Journal of India
Ji Young Lee, Helena M Linge, Kanta Ochani, Ke Lin, Edmund J Miller
INTRODUCTION: Sepsis is characterized by dysregulated systemic inflammation and cytokine storm. Angiopoietin-2 (Ang-2) is known to closely correlate with severity of sepsis-related acute lung injury and mortality. The aim of this study was to clarify the mechanisms involved in Ang-2 secretion to better understand the pathophysiology of sepsis. MATERIALS AND METHODS: The concentration of Ang-2 was assessed in culture medium of pulmonary microvascular endothelial cells in the presence or absence of Gram-positive bacteria cell wall components [lipoteichoic acid (LTA) and peptidoglycan (PGN)] stimulation at different time points ranging from 15 minutes to 24 hours...
September 1, 2016: Experimental Lung Research
Maddison Jade Griffin, Hayley Louise Letson, Geoffrey Phillip Dobson
Innovative host-directed drug therapies are urgently required to treat sepsis. We tested the effect of small-volume 0.9% NaCl adenosine, lidocaine and Mg(2+) (ALM) bolus and 4 hour intravenous infusion on survivability in the rat model of polymicrobial sepsis over 6 days. ALM treatment led to a significant increase in survivability (88%) compared to controls (25%). Four controls died on Days 2-3 and two died on Day 5. Early death was associated with elevated plasma and lung inflammatory markers (IL-6, IL-1ß, C-reactive protein), reduced white blood cell count (WBC), hypoxemia, hypercapnia, acidosis, hyperkalemia and elevated lactate, whereas late death was associated with a massive cytokine storm, a neutrophil dominated WBC rebound/overshoot, increased lung oxidant injury, edema and persistent ischemia...
August 31, 2016: Clinical and Vaccine Immunology: CVI
Elisa Estenssoro, Arnaldo Dubin
Acute respiratory distress syndrome (ARDS) is an acute respiratory failure produced by an inflammatory edema secondary to increased lung capillary permeability. This causes alveolar flooding and subsequently deep hypoxemia, with intrapulmonary shunt as its most important underlying mechanism. Characteristically, this alteration is unresponsive to high FIO2 and only reverses with end-expiratory positive pressure (PEEP). Pulmonary infiltrates on CXR and CT are the hallmark, together with decreased lung compliance...
2016: Medicina
Jianbo Yu, Jia Shi, Dan Wang, Shuan Dong, Yuan Zhang, Man Wang, Lirong Gong, Qiang Fu, Daquan Liu
BACKGROUND: Sepsis-associated acute lung injury remains the major cause of mortality in critically ill patients and is characterized by marked oxidative stress and mitochondrial dysfunction. Mitochondrial dynamics are indispensable for functional integrity. Additionally, heme oxygenase (HO)-1/carbon monoxide conferred cytoprotection against end-organ damage during endotoxic shock. Herein, we tested the hypothesis that HO-1/carbon monoxide played a critical role in maintaining the dynamic process of mitochondrial fusion/fission to mitigate lung injury in Sprague-Dawley rats or RAW 264...
August 30, 2016: Anesthesiology
Xuejiao Zhu, Yun Zou, Bing Wang, Jiali Zhu, Yi Chen, Lei Wang, Jinbao Li, Xiaoming Deng
BACKGROUND: CXCR3, a G-protein coupled chemokine receptor, has been shown to play a critical role in recruiting inflammatory cells into lungs in several studies. However, its roles in polymicrobial septic acute lung injury (ALI) is yet unknown. Therefore, the purpose of this study was to elucidate the protective effects of CXCR3 blockade on pulmonary microvascular endothelial cells (PMVECs) in septic ALI and explore potential mechanisms. MATERIALS AND METHODS: ALI was induced by polymicrobial sepsis through cecal ligation and puncture surgery...
August 2016: Journal of Surgical Research
L Meng, Z Lv, Z Z Yu, D Xu, X Yan
This study aimed to explore the protective effect of quercetin on acute lung injury (ALI) in rats with sepsis and the related mechanism. Rats were administered different doses of quercetin intraperitoneally, and blood samples and lung tissue were collected at 24 h after treatment. Arterial blood gases, lung water content, protein content, and cell counts in bronchoalveolar lavage fluid (BALF) were measured. Morphological changes in lung tissue pathology were observed under a light microscope. Serum intercellular adhesion molecule (ICAM)-1 and macrophage inflammatory protein 2 (MIP-2) levels were detected and ICAM-1 and MIP-2 mRNA expression in lung tissue was determined...
2016: Genetics and Molecular Research: GMR
Fetch more papers »
Fetching more papers... Fetching...
Read by QxMD. Sign in or create an account to discover new knowledge that matter to you.
Remove bar
Read by QxMD icon Read

Search Tips

Use Boolean operators: AND/OR

diabetic AND foot
diabetes OR diabetic

Exclude a word using the 'minus' sign

Virchow -triad

Use Parentheses

water AND (cup OR glass)

Add an asterisk (*) at end of a word to include word stems

Neuro* will search for Neurology, Neuroscientist, Neurological, and so on

Use quotes to search for an exact phrase

"primary prevention of cancer"
(heart or cardiac or cardio*) AND arrest -"American Heart Association"