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https://www.readbyqxmd.com/read/28904482/mathematics-of-ventilator-induced-lung-injury
#1
REVIEW
Ubaidur Rahaman
Ventilator-induced lung injury (VILI) results from mechanical disruption of blood-gas barrier and consequent edema and releases of inflammatory mediators. A transpulmonary pressure (PL) of 17 cmH2O increases baby lung volume to its anatomical limit, predisposing to VILI. Viscoelastic property of lung makes pulmonary mechanics time dependent so that stress (PL) increases with respiratory rate. Alveolar inhomogeneity in acute respiratory distress syndrome acts as a stress riser, multiplying global stress at regional level experienced by baby lung...
August 2017: Indian Journal of Critical Care Medicine
https://www.readbyqxmd.com/read/28904478/how-useful-is-extravascular-lung-water-measurement-in-managing-lung-injury-in-intensive-care-unit
#2
Anirban Bhattacharjee, Debasis Pradhan, Prithwis Bhattacharyya, Samarjit Dey, Daniala Chhunthang, Akash Handique, Angkita Barman, Mohd Yunus
CONTEXT: The primary goal of septic shock management is optimization of organ perfusion, often at the risk of overloading the interstitium and causing pulmonary edema. The conventionally used end points of resuscitation do not generally include volumetric parameters such as extravascular lung water index (EVLWI) and pulmonary vascular permeability index (PVPI). AIMS: This study aimed to assess the prognostic value of EVLWI and PVPI by calculating their correlation with the severity of lung injury...
August 2017: Indian Journal of Critical Care Medicine
https://www.readbyqxmd.com/read/28903389/epithelial-ho-1-stat3-affords-the-protection-of-subanesthetic-isoflurane-against-zymosan-induced-lung-injury-in-mice
#3
Ling Wang, Ya-Li Zhao, Ning-Ning Liu, Xiao-Shan Zhu, Qin-Qin Liu, Hai-Yu Mei, Li-Feng Wang, An-Gang Yang, Chun-Fang Gao, Jun-Tang Li
Epithelial dysfunction is a key characteristic of acute lung injury (ALI). Isoflurane (ISO) confers lung protection via anti-inflammatory and anti-apoptotic properties. However, the specific role and potential mechanisms of subanesthetic ISO in lung epithelium protection during zymosan-induced ALI remain unclear. In this study, zymosan increased the expression and activity of beneficial heme oxygenase-1 (HO-1) and signal transducers and activators of transcription 3 (STAT3) in the lung and isolated type II alveolar epithelial cells (AECs-II) from wild-type (WT) mice, which was further enhanced by ISO treatment...
August 15, 2017: Oncotarget
https://www.readbyqxmd.com/read/28886315/the-protective-effect-of-cinnamaldehyde-on%C3%A2-lipopolysaccharide-induced-acute-lung-injury-in-mice
#4
H Huang, Y Wang
The study wasintended to examinethe protective effect of cinnamaldehyde (CM) on lipopolysaccharide (LPS)-induced acute lung injury (ALI) mice model.The results of the investigation confirmed that, LPS induced inflammatory cytokines such as TNF-α, IL-6, IL-13 and IL-1β were significantly decreased by CM. CM also up-regulated level of IL-10. We found that CM significantly attenuated LPS-induced TLR4 expression, NF-κB activation and MPO activity in the lung tissues. It markedly reduced lung wet/dry ratio, and improved typical and severe pathological changes including pulmonary edema in the LPS induced ALI mice...
August 30, 2017: Cellular and Molecular Biology
https://www.readbyqxmd.com/read/28881620/eets-reduces-lps-induced-hyperpermeability-by-targeting-grp78-mediated-src-activation-and-subsequent-rho-rock-signaling-pathway
#5
Ruolan Dong, Danli Hu, Yan Yang, Zhihui Chen, Menglu Fu, Dao Wen Wang, Xizhen Xu, Ling Tu
Integrity of endothelial barrier is a determinant of the prognosis in the acute lung injury caused by sepsis. The epoxyeicosatrienoic acids (EETs), metabolites of arachidonic acid, exhibit protective effects in various pathogenic states, however, whether EETs play a role in endothelial barrier enhancement and the involved mechanisms remain to be investigated. Here, we show that increased EETs level by endothelial specific cytochrome P450 epoxygenase 2J2 over-expression and soluble epoxide hydrolase (sEH) inhibitor TPPU reduced lipopolysaccharide-induced endothelial hyper-permeability in vivo, accompanied by improved survival of septic mice...
August 1, 2017: Oncotarget
https://www.readbyqxmd.com/read/28871939/-astragalus-polysaccharide-alleviates-lipopolysaccharide-induced-lung-injury-in-rats-by-inhibiting-neutrophil-activation
#6
Jing Fang, Yating Yang, Jingyun Liu, Wenhong Song, Shudi Xu
Objective To study the effects of Astragalus polysaccharide (APS) on rat lung injury induced by lipopolysaccharide (LPS). Methods A total of 36 adult SD rats were randomly divided into control group, LPS model group and APS administration group. Acute lung injury was induced by a single intratracheal injection of LPS. Lung injury in rats was observed by HE staining. The changes of proinflammatory factors such as tumor necrosis factor α (TNF-α) and interleukin 1β (IL-1β) were detected by ELISA. The numbers of white blood cells (WBCs) and neutrophils in bronchoalveolar lavage fluid (BALF) were determined by cell counting...
August 2017: Xi Bao Yu Fen Zi Mian Yi Xue za Zhi, Chinese Journal of Cellular and Molecular Immunology
https://www.readbyqxmd.com/read/28870868/heme-oxygenase-1-participates-in-the-resolution-of-seawater-drowning-induced-acute-respiratory-distress-syndrome
#7
Jia-Jia Yuan, Xiao-Tong Zhang, Yun-Ting Bao, Xin-Jie Chen, Yuan-Zhao Shu, Jun-Liang Chen, Wei Chen, Bin Du, Qing-Feng Pang
The aim of the present study was to investigate whether heme oxygenase-1(HO-1) participated in the resolution of seawater drowning-induced acute respiratory distress syndrome (ARDS). In this study, gross and microscopic morphology of pulmonary tissue, computed tomography images and biochemical indexes were continuously observed from 15min to 15day after seawater drowning. The content and activity of HO-1 were determined by western-blot and spectrophotometric method, respectively. The morphological and biochemical indexes indicated that the seawater drowning could lead to the serious pulmonary hemorrhage and edema...
September 7, 2017: Respiratory Physiology & Neurobiology
https://www.readbyqxmd.com/read/28870157/ten-important-articles-on-noninvasive-ventilation-in-critically-ill-patients-and-insights-for-the-future-a-report-of-expert-opinions
#8
A Cortegiani, V Russotto, M Antonelli, E Azoulay, A Carlucci, G Conti, A Demoule, M Ferrer, N S Hill, S Jaber, P Navalesi, P Pelosi, R Scala, C Gregoretti
BACKGROUND: Noninvasive ventilation is used worldwide in many settings. Its effectiveness has been proven for common clinical conditions in critical care such as cardiogenic pulmonary edema and chronic obstructive pulmonary disease exacerbations. Since the first pioneering studies of noninvasive ventilation in critical care in the late 1980s, thousands of studies and articles have been published on this topic. Interestingly, some aspects remain controversial (e.g. its use in de-novo hypoxemic respiratory failure, role of sedation, self-induced lung injury)...
September 4, 2017: BMC Anesthesiology
https://www.readbyqxmd.com/read/28868484/acute-hepatitis-in-the-dress-syndrome
#9
Ana Maria Oliveira, Rita Carvalho, Alexandra Martins, Jorge Reis
Drug reaction with eosinophilia and systemic symptoms (DRESS) syndrome is a severe, idiosyncratic reaction characterized by diffuse maculopapular rash, facial edema, lymphadenopathy, fever, eosinophilia and/or other leukocyte abnormalities, and involvement of internal organs as liver, kidney, heart and lung. Diagnosing this entity is specifically complicated due to the multiplicity of organs involved. DRESS syndrome must be recognized promptly and the causative drug withdrawn in order to improve patient outcomes...
November 2016: GE Port J Gastroenterol
https://www.readbyqxmd.com/read/28866745/mortality-and-prognostic-factors-in-idiopathic-inflammatory-myositis-a-retrospective-analysis-of-a-large-multicenter-cohort-of-spain
#10
Laura Nuño-Nuño, Beatriz Esther Joven, Patricia E Carreira, Valentina Maldonado-Romero, Carmen Larena-Grijalba, Irene Llorente Cubas, Eva Gloria Tomero, María Carmen Barbadillo-Mateos, Paloma García De la Peña Lefebvre, Lucía Ruiz-Gutiérrez, Juan Carlos López-Robledillo, Henry Moruno-Cruz, Ana Pérez, Tatiana Cobo-Ibáñez, Raquel Almodóvar González, Leticia Lojo, María Jesús García De Yébenes, Francisco Javier López-Longo
The present study was undertaken to assess mortality, causes of death, and associated prognostic factors in a large cohort of patients diagnosed with idiopathic inflammatory myositis (IIM) from Spain. A retrospective longitudinal study was carried out in 467 consecutive patients with IIM, identified from 12 medical centers. Patients were classified as primary polymyositis, primary dermatomyositis (DM), overlap myositis, cancer-associated myositis (CAM), and juvenile idiopathic inflammatory myopathies. A total of 113 deaths occurred (24%) after a median follow-up time of 9...
September 2, 2017: Rheumatology International
https://www.readbyqxmd.com/read/28864276/physiopathology-of-multiple-organ-dysfunction-in-severely-monocrotophos-poisoned-rabbits
#11
Yun-Xiu Hou, Shi-Wen Liu, Lian-Wen Wang, Shu-Hua Wu
OBJECTIVE: Acute organophosphorus pesticides poisoning has a serious threat on people's health. This study aimed to investigate the pathogenesis and molecular mechanism of multiple organ dysfunction syndrome (MODS) in severely monocrotophos-poisoned rabbits. METHODS: Chinchilla rabbits were used to build the monocrotophos-poisoned animal model via subcutaneous abdominal injection. Acetylcholinesterase activity was determined using the dithiobisnitrobenzoic acid enzyme kinetics method, and the free organophosphorus (FOP) toxic substances content was analyzed using the enzyme inhibition method...
August 29, 2017: Chemico-biological Interactions
https://www.readbyqxmd.com/read/28860142/novel-therapeutic-roles-for-surfactant-inositols-and-phosphatidylglycerols-in-a-neonatal-piglet-ards-model-a-translational-study
#12
Dietmar Spengler, Supandi Winoto-Morbach, Sarah Kupsch, Christina Vock, Katharina Blöchle, Susanna Frank, Nele Rintz, Marie Diekötter, Harshavardhan Janga, Markus Weckmann, Sabine Fuchs, Andra B Schromm, Heinz Fehrenbach, Stefan Schütze, Martin F Krause
The biological and immune-protective properties of surfactant-derived phospholipids and phospholipid-subfractions in the context of neonatal inflammatory lung disease are widely unknown. Using a porcine neonatal triple-hit ARDS model (repeated airway lavage, overventilation, LPS instillation into airways), we assessed whether the supplementation of surfactant (poractant alfa, S) with inositol-derivatives (inositol-1,2,6-trisphosphate, IP3; phosphatidylinositol-3,5-bisphosphate, PIP2) or phosphatidylglycerol-subfractions (16:0/18:1-POPG; 18:1/18:1-DOPG) would result in improved clinical parameters, and sought to characterize changes in key inflammatory pathways behind these improvements...
August 31, 2017: American Journal of Physiology. Lung Cellular and Molecular Physiology
https://www.readbyqxmd.com/read/28854506/transfusion-related-acute-lung-injury-following-pda-ligation-in-a-preterm-neonate
#13
R G LaGrandeur, M Tran, C Merchant, C Uy
Transfusion-related acute lung injury (TRALI) is a life-threatening complication of blood product transfusion characterized by sudden onset hypoxemic respiratory failure with bilateral lung infiltrates and non-cardiogenic pulmonary edema developing within 6 hours of transfusion. It is believed to be under-recognized, particularly among preterm neonates in whom co-existing developmental lung disease adds diagnostic complexity. Here we report the case of a preterm neonate who developed TRALI during a blood transfusion following PDA ligation...
August 23, 2017: Journal of Neonatal-perinatal Medicine
https://www.readbyqxmd.com/read/28841896/a-systematic-review-of-diagnostic-methods-to-differentiate-acute-lung-injury-acute-respiratory-distress-syndrome-from-cardiogenic-pulmonary-edema
#14
Kosaku Komiya, Tomohiro Akaba, Yuji Kozaki, Jun-Ichi Kadota, Bruce K Rubin
BACKGROUND: Discriminating acute lung injury (ALI) or acute respiratory distress syndrome (ARDS) from cardiogenic pulmonary edema (CPE) is often challenging. This systematic review examines studies using biomarkers or images to distinguish ALI/ARDS from CPE. METHODS: Three investigators independently identified studies designed to distinguish ALI/ARDS from CPE in adults. Studies were identified from PubMed, and the Cochrane Central Register of Controlled Trials database until July 3, 2017...
August 25, 2017: Critical Care: the Official Journal of the Critical Care Forum
https://www.readbyqxmd.com/read/28828367/spontaneous-breathing-a-double-edged-sword-to-handle-with-care
#15
REVIEW
Tommaso Mauri, Barbara Cambiaghi, Elena Spinelli, Thomas Langer, Giacomo Grasselli
In acute hypoxemic respiratory failure (AHRF) and acute respiratory distress syndrome (ARDS) patients, spontaneous breathing is associated with multiple physiologic benefits: it prevents muscles atrophy, avoids paralysis, decreases sedation needs and is associated with improved hemodynamics. On the other hand, in the presence of uncontrolled inspiratory effort, severe lung injury and asynchronies, spontaneous ventilation might also worsen lung edema, induce diaphragm dysfunction and lead to muscles exhaustion and prolonged weaning...
July 2017: Annals of Translational Medicine
https://www.readbyqxmd.com/read/28820609/cardio-pulmonary-interactions-physiologic-basis-and-clinical-applications
#16
Michael R Pinsky
The hemodynamic effects of ventilation can be grouped into three concepts: 1) spontaneous ventilation is exercise; 2) changes in lung volume alter autonomic tone, pulmonary vascular resistance, and can compress the heart in the cardiac fossa; 3) spontaneous inspiratory efforts decrease intrathoracic pressure (ITP) increasing venous return and impeding left ventricular (LV) ejection; whereas positive pressure ventilation decreases venous return and unloads LV ejection. Spontaneous inspiratory efforts may induce acute LV failure and cardiogenic pulmonary edema...
August 18, 2017: Annals of the American Thoracic Society
https://www.readbyqxmd.com/read/28809781/ac2-26-an-annexin-a1-peptide-attenuates-ischemia-reperfusion-induced-acute-lung-injury
#17
Wen-I Liao, Shu-Yu Wu, Geng-Chin Wu, Hsin-Ping Pao, Shih-En Tang, Kun-Lun Huang, Shi-Jye Chu
Annexin A1 (AnxA1) is an endogenous protein that modulates anti-inflammatory processes, and its therapeutic potential has been reported in a range of inflammatory diseases. The effect of AnxA1 on ischemia-reperfusion (IR)-induced lung injury has not been examined. In this study, isolated, perfused rat lungs were subjected to IR lung injury induced by ischemia for 40 min, followed by reperfusion for 60 min. The rat lungs were randomly treated with vehicle (phosphate-buffered saline), and Ac2-26 (an active N-terminal peptide of AnxA1) with or without an N-formyl peptide receptor (FPR) antagonist N-Boc-Phe-Leu-Phe-Leu-Phe (Boc2)...
August 15, 2017: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/28808944/effect-of-ha330-resin-directed-hemoadsorption-on-a-porcine-acute-respiratory-distress-syndrome-model
#18
Xuefeng Xu, Chune Jia, Sa Luo, Yanming Li, Fei Xiao, Huaping Dai, Chen Wang
BACKGROUND: Blood purification is an emerging approach to dampening the cytokine storm. This study aims to assess the efficacy of HA330 resin-directed hemoadsorption (HA) on endotoxin-induced porcine acute respiratory distress syndrome (ARDS) model. METHODS: Twenty-four Chinese domestic pigs were allocated into saline group receiving intravenous infusion of saline (N = 6) and endotoxin group receiving intravenous infusion of LPS (N = 18). When ALI model was initially diagnosed, six pigs in the LPS and saline group were killed for BALF and histopathological analysis...
August 14, 2017: Annals of Intensive Care
https://www.readbyqxmd.com/read/28804627/effect-of-rapamycin-on-early-stage-apoptosis-of-neutrophils-in-sprague-dawley-rats-with-acute-lung-injury
#19
Liwei Li, Changtai Zhu, Ye Yuan, Zhiqiang Li
Transfusion-related acute lung injury (TRALI) is a serious complication characterized by the acute onset of non-cardiogenic pulmonary edema following transfusion of blood products. It is not known whether rapamycin has an effect on TRALI that is caused by blood transfusion. The aim of the present study was to determine the effect of rapamycin on early stage apoptosis of neutrophils in Sprague-Dawley rats with acute lung injury. Animal models of TRALI and acute pancreatitis-associated lung injury (APALI) were prepared using Sprague-Dawley rats and histopathological examination of lung tissues was used to validate acute lung injury models...
August 2017: Biomedical Reports
https://www.readbyqxmd.com/read/28801798/downregulation-of-paralemmin-3-ameliorates-lipopolysaccharide-induced-acute-lung-injury-in-rats-by-regulating-inflammatory-response-and-inhibiting-formation-of-tlr4-myd88-and-tlr4-trif-complexes
#20
Xuxin Chen, Lu Tang, Jian Feng, Yi Wang, Zhihai Han, Jiguang Meng
Previous studies have demonstrated paralemmin-3 (PALM3) participates in Toll-like receptor (TLR) signaling. This study investigated the effect of PALM3 knockdown on lipopolysaccharide (LPS)-induced acute lung injury (ALI) and its underlying mechanisms. We constructed a recombinant adenoviral vector containing short hairpin RNA for PALM3 to knockdown PALM3 expression. A transgene-free adenoviral vector was used as a negative control. The ALI rat model was established by LPS peritoneal injection at 48-h post-transfection...
August 12, 2017: Inflammation
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