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Lung Repair

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https://www.readbyqxmd.com/read/29352588/pulmonary-reinterventions-after-complete-unifocalization-and-repair-in-infants-and-young-children-with-tetralogy-of-fallot-with-major-aortopulmonary-collaterals
#1
Holly Bauser-Heaton, Alejandro Borquez, Ritu Asija, Lisa Wise-Faberowski, Yulin Zhang, Laura Downey, Stanton B Perry, Andrew Koth, Lynn F Peng, Claudia A Algaze, Frank L Hanley, Doff B McElhinney
BACKGROUND: Our institutional approach to tetralogy of Fallot (TOF) with major aortopulmonary collaterals (MAPCAs) emphasizes unifocalization and augmentation of the reconstructed pulmonary arterial (PA) circulation and complete intracardiac repair in infancy, usually in a single procedure. This approach yields a high rate of complete repair with excellent survival and low right ventricular (RV) pressure. However, little is known about remodeling of the unifocalized and reconstructed pulmonary circulation or about reinterventions on the reconstructed PAs or the RV outflow tract conduit...
December 13, 2017: Journal of Thoracic and Cardiovascular Surgery
https://www.readbyqxmd.com/read/29351446/mechanisms-and-consequences-of-oxidative-stress-in-lung-disease-therapeutic-implications-for-an-aging-populace
#2
Louise Hecker
The rapid expansion of the elderly population has led to the recent epidemic of age-related diseases, including increased incidence and mortality of chronic and acute lung diseases. Numerous studies have implicated aging and oxidative stress in the pathogenesis of various pulmonary diseases; however, despite recent advances in these fields, the specific contributions of aging and oxidative stress remain elusive. This review will discuss the consequences of aging on lung morphology and physiology, and how redox imbalance with aging contributes to lung disease susceptibility...
December 14, 2017: American Journal of Physiology. Lung Cellular and Molecular Physiology
https://www.readbyqxmd.com/read/29349838/patent-foramen-ovale-repair-at-the-time-of-double-lung-transplantation-necessary-or-not
#3
Nicholas R Hess, Stephen A Esper, Marie Tuft, Matthew Morrell, Jonathan D'Cunha
INTRODUCTION: Patient foramen ovale (PFO) is a common and often incidental intraoperative finding during lung transplantation (LTx). We sought to characterize the potential outcomes related to the decision-making of whether the PFO was repaired or left unrepaired. METHODS: We retrospectively evaluated bilateral LTx recipients between 2005 and 2015 from our prospective database. Incidence of postoperative stoke, 90-day mortality, and overall survival was compared between the PFO-positive and PFO-negative groups, and secondly compared between repaired PFO (rPFO) and non-repaired PFO (nrPFO) groups...
January 19, 2018: Clinical Transplantation
https://www.readbyqxmd.com/read/29348907/microsatellite-stability-and-mismatch-repair-proficiency-in-nasopharyngeal-carcinoma-may-not-predict-programmed-death-1-blockade-resistance
#4
Xiyi Liao, Liang Zhao, Sangang Wu, Hua Zheng, Haojun Chen, Huan Zhang, ZiJing Wang, Qin Lin
The US FDA granted accelerated approval to pembrolizumab for microsatellite instability-high and mismatch repair deficient cancers. The response of programmed death-1 blockade in mismatch repair proficiency (pMMR) colorectal cancer is very poor, however, whether such treatment is effective in pMMR nasopharyngeal carcinoma (NPC) remains unknown. We report a case of a 51-year-old man with NPC. PET-CT scan revealed a space-occupying lesion in the left lung, and the pathologic result confirmed the occupying lesion originated from NPC...
December 22, 2017: Oncotarget
https://www.readbyqxmd.com/read/29345200/distinct-niches-within-the-extracellular-matrix-dictate-fibroblast-function-in-cell-free-3d-lung-tissue-cultures
#5
Gerald Burgstaller, Arunima Sengupta, Sarah Vierkotten, Gerhard Preissler, Michael Lindner, Jürgen Behr, Melanie Königshoff, Oliver Eickelberg
Instructive cues from the extracellular matrix (ECM) and their functional interplay with cells play pivotal roles for development, tissue repair, and disease. However, the precise nature of this interplay remains elusive. We used an innovative 3D cell culture ECM model by decellularizing ex vivo lung tissue scaffolds (d3D-LTCs) derived from diseased and healthy mouse lungs, which widely mimics the native (patho)physiological in vivo microenvironment. We successfully repopulated all d3D-LTCs with primary human and murine fibroblasts...
January 18, 2018: American Journal of Physiology. Lung Cellular and Molecular Physiology
https://www.readbyqxmd.com/read/29345196/surfactant-protein-c-dampens-inflammation-by-decreasing-jak-stat-activation-during-lung-repair
#6
Huiyan Jin, Andrzej K Ciechanowicz, Alanna R Kaplan, Lin Wang, Ping Xia Zhang, Yi-Chien Lu, Rachel E Tobin, Brooke A Tobin, Lauren Cohn, Caroline J Zeiss, Patty J Lee, Emanuela M Bruscia, Diane S Krause
Surfactant Protein C (SPC), a key component of pulmonary surfactant, also plays a role in regulating inflammation. SPC deficiency in patients and mouse models is associated with increased inflammation and delayed repair, but the key drivers of SPC-regulated inflammation in response to injury are largely unknown. This study focuses on a new mechanism of SPC as an anti-inflammatory molecule using SPC-TK/SPC-KO (surfactant protein C-thymidine kinase/surfactant protein C knockout) mice, which represent a novel sterile injury model that mimics clinical acute respiratory distress syndrome (ARDS)...
January 18, 2018: American Journal of Physiology. Lung Cellular and Molecular Physiology
https://www.readbyqxmd.com/read/29344809/regeneration-of-functional-alveoli-by-adult-human-sox9-airway-basal-cell-transplantation
#7
Qiwang Ma, Yu Ma, Xiaotian Dai, Tao Ren, Yingjie Fu, Wenbin Liu, Yufei Han, Yingchuan Wu, Yu Cheng, Ting Zhang, Wei Zuo
Irreversible destruction of bronchi and alveoli can lead to multiple incurable lung diseases. Identifying lung stem/progenitor cells with regenerative capacity and utilizing them to reconstruct functional tissue is one of the biggest hopes to reverse the damage and cure such diseases. Here we showed that a rare population of SOX9+ basal cells (BCs) located at airway epithelium rugae can regenerate adult human lung. Human SOX9+ BCs can be readily isolated by bronchoscopic brushing and indefinitely expanded in feeder-free condition...
January 17, 2018: Protein & Cell
https://www.readbyqxmd.com/read/29340115/hypermutation-and-microsatellite-instability-in-gastrointestinal-cancers
#8
REVIEW
Kizuki Yuza, Masayuki Nagahashi, Satoshi Watanabe, Kazuaki Takabe, Toshifumi Wakai
Recent progress in cancer genome analysis using next-generation sequencing has revealed a high mutation burden in some tumors. The particularly high rate of somatic mutation in these tumors correlates with the generation of neo-antigens capable of eliciting an immune response. Identification of hypermutated tumors is therefore clinically valuable for selecting patients suitable for immunotherapy treatment. There are several known causes of hypermutation in tumors, such as ultraviolet light in melanoma, tobacco smoke in lung cancer, and excessive APOBEC (apolipoprotein B mRNA editing enzyme, catalytic polypeptide-like) activity in breast and gastric cancer...
December 19, 2017: Oncotarget
https://www.readbyqxmd.com/read/29338072/targeting-her2-in-colorectal-cancer-the-landscape-of-amplification-and-short-variant-mutations-in-erbb2-and-erbb3
#9
Jeffrey S Ross, Marwan Fakih, Siraj M Ali, Julia A Elvin, Alexa B Schrock, James Suh, Jo-Anne Vergilio, Shakti Ramkissoon, Eric Severson, Sugganth Daniel, David Fabrizio, Garrett Frampton, James Sun, Vincent A Miller, Philip J Stephens, Laurie M Gay
BACKGROUND: In contrast to lung cancer, few precision treatments are available for colorectal cancer (CRC). One rapidly emerging treatment target in CRC is ERBB2 (human epidermal growth factor receptor 2 [HER2]). Oncogenic alterations in HER2, or its dimerization partner HER3, can underlie sensitivity to HER2-targeted therapies. METHODS: In this study, 8887 CRC cases were evaluated by comprehensive genomic profiling for genomic alterations in 315 cancer-related genes, tumor mutational burden, and microsatellite instability...
January 16, 2018: Cancer
https://www.readbyqxmd.com/read/29336816/traumatic-thoracic-rib-cage-hernias-operative-management-and-proposal-for-a-new-anatomic-based-grading-system
#10
John Kuckelman, Riyad Karmy-Jones, Elizabeth Windell, Seth Izenberg, Jean-Stephane David, William Long, Matthew J Martin
BACKGROUND: Traumatic Rib Cage Hernias (TRCH) requiring operative repair are rare and there is currently no literature to guiding surgical management. METHODS: Perioperative review of TRCH over 32 years. Five operative grades were developed based on extent of tissue/bone damage, size, and location. RESULTS: Twenty-four patients (20 blunt, 4 penetrating) underwent operative repair. Lung was the herniated organ in 88% with a median of 4 rib fractures and average size of 60...
January 5, 2018: American Journal of Surgery
https://www.readbyqxmd.com/read/29336401/bleeding-in-the-lung-complicates-a-routine-intracardiac-repair-what-went-wrong
#11
Neeti Makhija, Rohan Magoon, Minati Choudhury, Sivasubramanian Ramakrishnan
Cyanotic congenital heart disease presents an increased tendency to bleed in view of subtle coagulation defects. Airway bleeding can be particularly difficult to manage while maintaining an adequate ventilation. An isolated lung bleed with the exclusion of possible traumatic, medical and surgical causes of bleeding, should alert the attending anesthesiologist to the possibility of the collateral-related bleeding. Preoperative coil embolization remains an important initial management step in a case of tetralogy of Fallot (TOF) with major aortopulmonary collaterals...
January 2018: Annals of Cardiac Anaesthesia
https://www.readbyqxmd.com/read/29332537/azd9291-increases-sensitivity-to-radiation-in-pc-9-ir-cells-by-delaying-dna-damage-repair-after-irradiation-and-inducing-apoptosis
#12
Shenghai Wu, Lucheng Zhu, Linglan Tu, Sumei Chen, Haixiu Huang, Jingjing Zhang, Shenglin Ma, Shirong Zhang
AZD9291 is a novel, irreversible epidermal growth factor receptor (EGFR) tyrosine kinase inhibitor (TKI), which is administered orally. It has been proven effective in non-small cell lung cancer (NSCLC) patients, with both EGFR-sensitizing and EGFR T790M mutations in preclinical models. However, the potential therapeutic effects of AZD9291 combined with other modalities, including ionizing radiation, are not well understood. The presence of AZD9291 significantly increases the cell-killing effects of radiation in PC-9-IR cells with a secondary EGFR mutation (T790M), which was developed from NSCLC PC-9 cells (human lung adenocarcinoma cell with EGFR 19 exon 15 bp deletion) after chronic exposure to increasing doses of gefitinib, and in H1975 cells (human lung adenocarcinoma cell with EGFR exon 20 T790M mutation de novo), but not in PC-9 cells or in H460 cells (human lung adenocarcinoma cell with wild-type EGFR)...
January 13, 2018: Radiation Research
https://www.readbyqxmd.com/read/29332154/the-influence-of-systemically-or-locally-administered-mesenchymal-stem-cells-on-tissue-repair-in-a-rat-oral-implantation-model
#13
Miya Kanazawa, Ikiru Atsuta, Yasunori Ayukawa, Takayoshi Yamaza, Ryosuke Kondo, Yuri Matsuura, Kiyoshi Koyano
BACKGROUND: Multipotent mesenchymal stem cells (MSCs) are used clinically in regenerative medicine. Our previous report showed systemically injected MSCs improved peri-implant sealing and accelerated tissue healing. However, the risks of systemic MSC administration, including lung embolism, must be considered; therefore, their local application must be assessed for clinical safety and efficacy. We investigated differences in treatment effect between local and systemic MSC application using a rat oral implantation model...
January 13, 2018: International Journal of Implant Dentistry
https://www.readbyqxmd.com/read/29331644/ozone-exposure-induces-respiratory-barrier-biphasic-injury-and-inflammation-controlled-by-interleukin-33
#14
Chloé Michaudel, Claire Mackowiak, Isabelle Maillet, Louis Fauconnier, Cezmi Akdis, Milena Sokolowska, Anita Dreher, Hern-Tze Tina Tan, Valérie F Quesniaux, Bernhard Ryffel, Dieudonnée Togbe
BACKGROUND: IL-33 plays critical role in the regulation of tissue homeostasis, injury and repair. Whether IL-33 regulates neutrophil recruitment and function independently of airways hyperresponsiveness (AHR) in ozone induced lung injury and inflammation is unclear. OBJECTIVE: To examine the role of IL-33/ST2 axis in lung inflammation upon acute ozone exposure in mice. METHODS: ST2 and IL-33 deficient mice, IL-33-citrine reporter and C57BL/6 (WT) mice underwent a single ozone exposure (1 ppm for 1h) in all studies...
January 10, 2018: Journal of Allergy and Clinical Immunology
https://www.readbyqxmd.com/read/29331422/fept-cys-nanoparticles-induce-ros-dependent-cell-toxicity-and-enhance-chemo-radiation-sensitivity-of-nsclc-cells-in-vivo-and-in-vitro
#15
Yingming Sun, Hongtao Miao, Shijing Ma, Lei Zhang, Chengcheng You, Fang Tang, Cui Yang, Xiaoli Tian, Feng Wang, Yuan Luo, Xiangjie Lin, Hui Wang, Chunyang Li, Zhijun Li, Hongnv Yu, Xuefeng Liu, Yu Xiao, Yan Gong, Junhong Zhang, Hong Quan, Conghua Xie
FePt-Cys nanoparticles (FePt-Cys NPs) have been well used in many fields, despite their poor solubility and stability. We synthetized a cysteine surface modified FePt NPs, which exhibited good solubility, stability and biocompatibility. We explored the insight mechanisms of the antitumor effects of this new nanoparticle system in lung cancer cells. In the in vitro study, FePt-Cys NPs induced a reactive oxygen species (ROS) burst, which suppressed the antioxidant protein expression and induced cell apoptosis...
January 10, 2018: Cancer Letters
https://www.readbyqxmd.com/read/29324381/comparative-study-of-diesel-and-biodiesel-exhausts-on-lung-oxidative-stress-and-genotoxicity-in-rats
#16
Thierry Douki, Cécile Corbière, David Preterre, Perrine J Martin, Valérie Lecureur, Véronique André, Yann Landkocz, Ivannah Pottier, Veronika Keravec, Olivier Fardel, Silvestre Moreira-Rebelo, Didier Pottier, Cathy Vendeville, Frédéric Dionnet, Pierre Gosset, Sylvain Billet, Christelle Monteil, François Sichel
The contribution of diesel exhaust to atmospheric pollution is a major concern for public health, especially in terms of occurrence of lung cancers. The present study aimed at addressing the toxic effects of a repeated exposure to these emissions in an animal study performed under strictly controlled conditions. Rats were repeatedly exposed to the exhaust of diesel engine. Parameters such as the presence of a particle filter or the use of gasoil containing rapeseed methyl ester were investigated. Various biological parameters were monitored in the lungs to assess the toxic and genotoxic effects of the exposure...
January 8, 2018: Environmental Pollution
https://www.readbyqxmd.com/read/29323734/inhibitory-effect-of-circulating-fibrocytes-on-injury-repair-in-acute-lung-injury-acute-respiratory-distress-syndrome-mice-model
#17
Wenlin Tai, Jinyu Li, Boyang Zheng, Hanxin Wu, Jiawei Ding, Ling Gao, Zhaoxin Dong
The study was aimed to explore the functions of circulating fibrocytes (CFs) on injury repair in acute lung injury/acute respiratory distress syndrome (ALI/ARDS) mice model and its clinical value as a biomarker for ALI/ARDS. ALI/ARDS mice model was established by intratracheal instillation of lipopolysaccharide (LPS). Mononuclear cells were isolated from peripheral blood of ALI/ARDS model and flow cytometry was used to measure CFs defined as cells positive for CD45 and collagen-1. Histological changes of lung tissues were evaluated by H&E staining and Masson's trichrome staining...
January 11, 2018: Journal of Cellular Biochemistry
https://www.readbyqxmd.com/read/29321022/serum-metabolic-profiling-identified-a-distinct-metabolic-signature-in-patients-with-idiopathic-pulmonary-fibrosis-a-potential-biomarker-role-for-lysopc
#18
Barbara Rindlisbacher, Cornelia Schmid, Thomas Geiser, Cédric Bovet, Manuela Funke-Chambour
BACKGROUND: Idiopathic pulmonary fibrosis (IPF) is a lethal lung disease of unknown etiology. Patients present loss of lung function, dyspnea and dry cough. Diagnosis requires compatible radiologic imaging and, in undetermined cases, invasive procedures such as bronchoscopy and surgical lung biopsy. The pathophysiological mechanisms of IPF are not completely understood. Lung injury with abnormal alveolar epithelial repair is thought to be a major cause for activation of profibrotic pathways in IPF...
January 10, 2018: Respiratory Research
https://www.readbyqxmd.com/read/29319804/effects-of-agricultural-organic-dusts-on-human-lung-resident-mesenchymal-stem-stromal-cell-function
#19
Tara M Nordgren, Kristina L Bailey, Art J Heires, Dawn Katafiasz, Debra J Romberger
Agricultural organic dust exposures trigger harmful airway inflammation, and workers experiencing repetitive dust exposures are at increased risk for lung disease. Mesenchymal stem/stromal cells (MSC) regulate wound repair processes in the lung, and may contribute to either pro-resolution or pro-fibrotic lung responses. It is unknown how organic dust exposures alter lung-resident MSC activation and pro-inflammatory versus pro-repair programs in the lung. To address this gap in knowledge, we isolated human lung-resident MSC from lung tissue...
January 8, 2018: Toxicological Sciences: An Official Journal of the Society of Toxicology
https://www.readbyqxmd.com/read/29318104/one-stage-laparoscopic-surgery-for-pulmonary-sequestration-and-hiatal-hernia-in-a-2-year-old-girl
#20
Hisayuki Miyagi, Shohei Honda, Hiromi Hamada, Masashi Minato, Momoko W Ara, Akinobu Taketomi
We herein report a case of one-stage laparoscopic surgery for extralobar pulmonary sequestration (EPS) and hiatal hernia. Our patient was a 2-year-old girl who was diagnosed as a mediastinal mass lesion. Postnatal computed tomography revealed that the mediastinal mass was an EPS. Two weeks after birth, the patient developed gastroesophageal reflux (GER), and esophagography showed a hiatal hernia. At 2 years of age, she underwent one-stage laparoscopic Nissen's fundoplication for GER with resection of the EPS in the posterior mediastinum...
January 2018: European Journal of Pediatric Surgery Reports
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