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Protective lung strategy

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https://www.readbyqxmd.com/read/28722695/cardiac-cycle-efficiency-and-dicrotic-pressure-variations-new-parameters-for-fluid-therapy-a-pilot-observational-study
#1
Antonio Messina, Salvatore M Romano, Eleonora Bonicolini, Davide Colombo, Gianmaria Cammarota, Marco Chiostri, Francesco Della Corte, Paolo Navalesi, Didier Payen, Stefano Romagnoli
BACKGROUND: During a fluid challenge, the changes in cardiac performance and peripheral circulatory tone are closely related to the position of the ventricle on the Frank-Starling curve. Some patients have a good haemodynamic response to a fluid challenge, others hardly any response. The early haemodynamic effects of a fluid challenge could predict the final response before the entire fluid volume has been administered. OBJECTIVE: To assess whether a multivariate logistic regression model, including pulse pressure variation (PPV), cardiac cycle efficiency (CCE), arterial elastance and the difference between the dicrotic pressure and both systolic and mean arterial pressure (SAP - Pdic and MAP - Pdic) can predict cardiac responsiveness early during a fluid challenge in comparison with the standard procedure described elsewhere...
June 19, 2017: European Journal of Anaesthesiology
https://www.readbyqxmd.com/read/28720332/synthesis-and-biological-evaluation-of-fluoro-substituted-3-4-dihydroquinazoline-derivatives-for-cytotoxic-and-analgesic-effects
#2
Jin Han Kim, Hui Rak Jeong, Da Woon Jung, Hong Bin Yoon, Sun Young Kim, Hyoung Ja Kim, Kyung-Tae Lee, Vinicius M Gadotti, Junting Huang, Fang-Xiong Zhang, Gerald W Zamponi, Jae Yeol Lee
As a bioisosteric strategy to overcome the poor metabolic stability of lead compound KYS05090S, a series of new fluoro-substituted 3,4-dihydroquinazoline derivatives was prepared and evaluated for T-type calcium channel (Cav3.2) block, cytotoxic effects and liver microsomal stability. Among them, compound 8h (KCP10068F) containing 4-fluorobenzyl amide and 4-cyclohexylphenyl ring potently blocked Cav3.2 currents (>90% inhibition) at 10μM concentration and exhibited cytotoxic effect (IC50=5.9μM) in A549 non-small cell lung cancer cells that was comparable to KYS05090S...
July 8, 2017: Bioorganic & Medicinal Chemistry
https://www.readbyqxmd.com/read/28719033/identification-of-driver-copy-number-alterations-in-diverse-cancer-types-and-application-in-drug-repositioning
#3
Wenbin Zhou, Zhangxiang Zhao, Ruiping Wang, Yue Han, Chengyu Wang, Fan Yang, Ya Han, Haihai Liang, Lishuang Qi, Chenguang Wang, Zheng Guo, Yunyan Gu
Results from numerous studies suggest an important role for somatic copy number alterations (SCNAs) in cancer progression. Our work aimed to identify the drivers (oncogenes or tumor suppressor genes) that reside in recurrently aberrant genomic regions, including a large number of genes or non-coding genes, which remain a challenge for decoding the SCNAs involved in carcinogenesis. Here, we propose a new approach to comprehensively identify drivers, using 8740 cancer samples involving 18 cancer types from The Cancer Genome Atlas (TCGA)...
July 18, 2017: Molecular Oncology
https://www.readbyqxmd.com/read/28713893/interleukin%C3%A2-6-rna-knockdown-ameliorates-acute-lung-injury-induced-by-intestinal-ischemia-reperfusion-in-rats-by-upregulating-interleukin%C3%A2-10-expression
#4
Bing Yuan, Liu-Lin Xiong, Mu-Dong Wen, Piao Zhang, Hong-Yu Ma, Ting-Hua Wang, Yun-Hui Zhang
Acute lung injury (ALI) is a common complication following intestinal ischemia/reperfusion (II/R) injury and contributes to the associated high mortality rate. However, the underlying mechanism is poorly understood and treatments are limited. RNA interference (RNAi) has been demonstrated to provide a promising disease treatment strategy both in vitro and in vivo. Therefore, the present study aimed to test whether blocking the proinflammatory cytokine IL‑6 by RNAi may protect the lungs from remote organ injury following II/R, and to investigate the potential underlying mechanisms...
July 6, 2017: Molecular Medicine Reports
https://www.readbyqxmd.com/read/28712455/the-properties-of-the-unique-age-associated-b-cell-subset-reveal-a-shift-in-strategy-of-immune-response-with-age
#5
Susan L Swain, Olivia Kugler-Umana, Yi Kuang, Wenliang Zhang
In aged mice, conventional naive B cells decrease and a new population of age-associated B cells (ABC)(3) develops. When aged unprimed mice are infected with influenza virus, there is a reduced generation of helper CD4 T cell subsets and germinal center B cells, leading to limited production of IgG Ab and less generation of conventional long-lived plasma cells, compared to young. However, we find an enhanced non-follicular (GL7(-)) ABC response that is helper T cell-independent, but requires high viral dose and pathogen recognition pathways...
July 11, 2017: Cellular Immunology
https://www.readbyqxmd.com/read/28710768/panobinostat-sensitizes-kras-mutant-non-small-cell-lung-cancer-to-gefitinib-by-targeting-taz
#6
Wen-Ying Lee, Pin-Cyuan Chen, Wen-Shin Wu, Han-Chung Wu, Chun-Hsin Lan, Yen-Hua Huang, Chia-Hsiung Cheng, Ku-Chung Chen, Cheng-Wei Lin
Mutation of KRAS in non-small cell lung cancer (NSCLC) shows a poor response to epidermal growth factor receptor (EGFR) inhibitors and chemotherapy. Currently, there are no direct anti-KRAS therapies available. Thus, new strategies have emerged for targeting KRAS downstream signaling. Panobinostat is a clinically available histone deacetylase inhibitor for treating myelomas and also shows potentiality in NSCLC. However, the therapeutic efficacy of panobinostat against gefitinib-resistant NSCLC is unclear. In this study, we demonstrated that panobinostat overcame resistance to gefitinib in KRAS-mutant/EGFR-wild type NSCLC...
July 14, 2017: International Journal of Cancer. Journal International du Cancer
https://www.readbyqxmd.com/read/28708313/human-biliverdin-reductase-regulates-the-molecular-mechanism-underlying-cancer-development
#7
Min Zhang, Wei Xin, Zhi Yi, Yue Li, Ying Liu, Hongyue Zhang, He Chen, Xinxin Chen, Shujie Tan, Daling Zhu
Human biliverdin reductase (hBVR), is an enzyme, that converts biliverdin to bilirubin, and has been implicated in epithelial-mesenchymal transition?EMT? in breast cancer. However, few studies have investigated the role of hBVR in cell apoptosis in other cancers. Therefore, the aim of this study was to investigate the effects of hBVR in several lines of cancer cells. The results of this study showed that hBVR expression was up-regulated in breast, lung, and liver cancers, but not ovarian cancer. Moreover, hBVR inhibition by small interfering RNA (si-hBVR) attenuated cell survival and increased caspase-3 protein expression, which was mediated by the ERK1/2 signaling pathway in relative cancer cells...
July 14, 2017: Journal of Cellular Biochemistry
https://www.readbyqxmd.com/read/28701843/incidence-proportion-of-acute-cor-pulmonale-in-patients-with-acute-respiratory-distress-syndrome-subjected-to-lung-protective-ventilation-a-systematic-review-and-meta-analysis
#8
Saurabh Kumar Das, Nang Sujali Choupoo, Priyam Saikia, Amitabh Lahkar
INTRODUCTION: Reported incidence of acute cor pulmonale (ACP) in patients with acute respiratory distress syndrome (ARDS) varies from 10% to 84%, despite being subjected to lung protective ventilation according to the current guidelines. The objective of this review is to find pooled cumulative incidence of ACP in patients with ARDS undergoing lung protective ventilation. MATERIALS AND METHODS: We searched MEDLINE, EMBASE, Cochrane Library, KoreaMed, LILACS, and WHO Clinical Trial Registry...
June 2017: Indian Journal of Critical Care Medicine
https://www.readbyqxmd.com/read/28701189/stromal-derived-factor-1-mediates-the-lung-regenerative-effects-of-mesenchymal-stem-cells-in-a-rodent-model-of-bronchopulmonary-dysplasia
#9
Joel Reiter, Shelley Drummond, Ibrahim Sammour, Jian Huang, Victoria Florea, Polliana Dornas, Joshua M Hare, Claudia O Rodrigues, Karen C Young
BACKGROUND: Mesenchymal stem cells (MSCs) attenuate lung injury in experimental models of bronchopulmonary dysplasia (BPD). Stromal derived factor-1 (SDF-1), a chemokine secreted by MSCs, modulates angiogenesis and stem cell recruitment. Here we tested the hypothesis that SDF-1 mediates MSC protective effects in experimental BPD by modulating angiogenesis. METHODS: SDF-1 was knocked down in MSCs using lentiviral vectors carrying anti-SDF-1 short hairpin RNA (MSC-SDF KD)...
July 12, 2017: Respiratory Research
https://www.readbyqxmd.com/read/28696966/defining-a-ventilation-strategy-for-flexible-bronchoscopy-on-mechanically-ventilated-patients-in-the-medical-intensive-care-unit
#10
Yonatan Y Greenstein, Eric Shakespeare, Peter Doelken, Paul H Mayo
BACKGROUND: Flexible bronchoscopy (FB) in intubated patients on mechanical ventilation increases airway resistance. During FB, two ventilatory strategies are possible: maintaining tidal volume (VT) while maintaining baseline CO2 or allowing reduction of VT. The former strategy carries risk of hyperinflation due to expiratory flow limitation with FB. The aim of the authors was too study end expiratory lung volume (EELV) during FB of intubated subjects while limiting VT. METHODS: We studied 16 subjects who were intubated on mechanical ventilation and required FB...
July 2017: Journal of Bronchology & Interventional Pulmonology
https://www.readbyqxmd.com/read/28695586/intra-operative-protective-mechanical-ventilation-in-lung-transplantation-a-randomised-controlled-trial
#11
G L Verbeek, P S Myles, G P Westall, E Lin, S L Hastings, S F Marasco, J Jaffar, A C Meehan
Primary graft dysfunction occurs in up to 25% of patients after lung transplantation. Contributing factors include ventilator-induced lung injury, cardiopulmonary bypass, ischaemia-reperfusion injury and excessive fluid administration. We evaluated the feasibility, safety and efficacy of an open-lung protective ventilation strategy aimed at reducing ventilator-induced lung injury. We enrolled adult patients scheduled to undergo bilateral sequential lung transplantation, and randomly assigned them to either a control group (volume-controlled ventilation with 5 cmH2 O, positive end-expiratory pressure, low tidal volumes (two-lung ventilation 6 ml...
August 2017: Anaesthesia
https://www.readbyqxmd.com/read/28695576/mechanical-ventilation-and-extracorporeal-membrane-oxygenation-as-a-bridging-strategy-to-lung-transplantation-significant-gains-in-survival
#12
Awori J Hayanga, Angela L Du, Kyla Joubert, Tuft Marie, Rachel Baird, Joseph Pilewski, Mathew Morrell, Jonathan D'Cunha, Norihisa Shigemura
Mechanical ventilation (MV) and extracorporeal membrane oxygenation (ECMO) are increasingly used to bridge patients to lung transplantation. We investigated the impact of using MV, with or without ECMO, prior to lung transplantation on survival after transplantation by performing a retrospective analysis of 826 patients who underwent transplantation at our high-volume center. Recipient characteristics and posttransplant outcomes were analyzed. Most lung transplant recipients (729 patients) did not require bridging; 194 of these patients were propensity matched with patients who were bridged using MV alone (48 patients) or MV and ECMO (49 patients)...
July 11, 2017: American Journal of Transplantation
https://www.readbyqxmd.com/read/28694198/survival-with-smog-and-smoke-precision-intervention
#13
Hua Linda Cai, Chen Wang
Despite continuous efforts of regional government agencies, air pollution remains a major threat to public health worldwide. In the January of 2017, a severe episode of smog similar to the London Fog in 1952, appeared in London. A longest episode of Chinese Haze also developed in Beijing, during which the PM2.5 (particular matter sized less than 2.5 micrometers) levels rose up to 500 μg/m(3). The European smog and the Chinese Haze are associated with large numbers of premature deaths each year, at 400,000 and 1...
July 7, 2017: Chest
https://www.readbyqxmd.com/read/28684287/high-frequency-oscillatory-ventilation-in-adults-with-ards-past-present-and-future
#14
REVIEW
Michael C Sklar, Eddy Fan, Ewan C Goligher
High-frequency oscillatory ventilation (HFOV) is a unique mode of mechanical ventilation that utilizes non-conventional gas exchange mechanisms to deliver ventilation at very low tidal volumes and high frequencies. The properties of HFOV make it a potentially ideal mode to prevent ventilator-induced lung injury in patients with acute respiratory distress syndrome. Despite a compelling physiological basis and promising experimental data, large randomized controlled trials have not detected an improvement in survival with the use of HFOV; the use of HFOV as an early lung-protective strategy in patients with ARDS may be harmful...
July 3, 2017: Chest
https://www.readbyqxmd.com/read/28678919/microrna-142-3p-inhibits-apoptosis-and-inflammation-induced-by-bleomycin-through-down-regulation-of-cox-2-in-mle-12-cells
#15
F Guo, S C Lin, M S Zhao, B Yu, X Y Li, Q Gao, D J Lin
microRNA (miR)-142-3p is implicated in malignancy and has been identified as a biomarker for aggressive and recurrent lung adenocarcinomas. This study aimed to evaluate the inhibitory effect of miR-142-3p on apoptosis and inflammation induced by bleomycin in MLE-12 cells. MLE-12 cells were first transfected either with miR-142-3p mimic or miR-142-3p inhibitor and then the cells were exposed to 50 μg/mL of bleomycin. Thereafter, cell viability, apoptosis and the expression of pro-inflammatory cytokines were assessed using CCK-8, flow cytometry, RT-PCR and western blot analyses...
July 3, 2017: Brazilian Journal of Medical and Biological Research, Revista Brasileira de Pesquisas Médicas e Biológicas
https://www.readbyqxmd.com/read/28677037/suppression-of-a-cancer-stem-like-phenotype-mediated-by-alpha-lipoic-acid-in-human-lung-cancer-cells-through-down-regulation-of-%C3%AE-catenin-and-oct-4
#16
Preeyaporn Plaimee Phiboonchaiyanan, Pithi Chanvorachote
PURPOSE: Cancer stem cells (CSCs) that possess the ability of self-renewal and multi-potency have been shown to drive tumor progression and metastasis. The majority of recent studies has focused on potential molecules targeting CSCs so as to develop novel strategies for efficient cancer treatment or protection. Here, we show how alpha-lipoic acid (LA), an endogenous mitochondrial anti-oxidant, affects the CSC-like phenotypes of human non-small cell lung cancer-derived H23, H292 and H460 cells...
July 4, 2017: Cellular Oncology (Dordrecht)
https://www.readbyqxmd.com/read/28671879/feasibility-of-protective-ventilation-during-elective-supratentorial-neurosurgery-a-randomized-crossover-clinical-trial
#17
Francesco Ruggieri, Luigi Beretta, Laura Corno, Valentina Testa, Enrico A Martino, Marco Gemma
BACKGROUND: Traditional ventilation approaches, providing high tidal volumes (Vt), produce excessive alveolar distention and lung injury. Protective ventilation, employing lower Vt and positive end-expiratory pressure (PEEP), is an attractive alternative also for neuroanesthesia, when prolonged mechanical ventilation is needed. Nevertheless, protective ventilation during intracranial surgery may exert dangerous effects on intracranial pressure (ICP). We tested the feasibility of a protective ventilation strategy in neurosurgery...
June 30, 2017: Journal of Neurosurgical Anesthesiology
https://www.readbyqxmd.com/read/28666759/a-short-hairpin-rna-based-adjuvant-targeting-nf-%C3%AE%C2%BAb-repressor-i%C3%AE%C2%BAb%C3%AE-promotes-migration-of-dermal-dendritic-cells-to-draining-lymph-nodes-and-antitumor-ctl-responses-induced-by-dna-vaccination
#18
Felipe Gálvez-Cancino, Jonathan Roco, Nicole Rojas-Colonelli, Camila Flores, Paola Murgas, Sebastián Cruz-Gómez, César Oyarce, Manuel Varas-Godoy, Daniela Sauma, Alvaro Lladser
DNA vaccination is an attractive approach to elicit tumor-specific cytotoxic CD8(+) T lymphocytes (CTL), which can mediate protective immunity against tumors. To initiate CTL responses, antigen-encoding plasmids employed for DNA vaccination need to activate dendritic cells (DC) through the stimulation of DNA-sensing innate immune receptors that converge in the activation of the master transcription factor NF-κB. To this end, NF-κB repressor IκBα needs to be degraded, allowing NF-κB to translocate to the nucleus and transcribe proinflammatory target genes, as well as its repressor IκBα...
June 27, 2017: Vaccine
https://www.readbyqxmd.com/read/28664851/clinical-trials-in-acute-respiratory-distress-syndrome-challenges-and-opportunities
#19
REVIEW
Michael A Matthay, Daniel F McAuley, Lorraine B Ware
This year is the 50th anniversary of the first description of acute respiratory distress syndrome (ARDS). Since then, much has been learned about the pathogenesis of lung injury in ARDS, with an emphasis on the mechanisms of injury to the lung endothelium and the alveolar epithelium. In terms of treatment, major progress has been made in reducing mortality from ARDS with lung-protective ventilation, using a tidal volume of 6 mL per kg of predicted bodyweight and a plateau airway pressure of less than 30 cm H2O...
June 2017: Lancet Respiratory Medicine
https://www.readbyqxmd.com/read/28664617/down-regulation-of-long-noncoding-rna-malat1-by-rna-interference-inhibits-proliferation-and-induces-apoptosis-in-multiple-myeloma
#20
Hui Liu, Huihan Wang, Bin Wu, Kun Yao, Aijun Liao, Miao Miao, Yang Li, Wei Yang
Multiple myeloma (MM) is a neoplastic plasma-cell disorder characterized by abnormal proliferation of monoclonal plasma cells in the bone marrow. Metastasis-associated lung adenocarcinoma transcript 1 (MALAT1), an evolutionarily highly conserved long non-coding RNA was originally identified in metastatic non-small cell lung cancer and has been reported to be up-regulated in many other cancers. However, the function of MALAT1 in MM remains unknown. In the present study, by transfecting MM cells with MALAT1-specific short hairpin RNA (shRNA) expression plasmids, the role of MALAT1 in the proliferation and apoptosis of MM cells was investigated in vitro, and the tumorigenicity of MALAT1-silenced cells was evaluated in vivo...
June 30, 2017: Clinical and Experimental Pharmacology & Physiology
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