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Lung Repair

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https://www.readbyqxmd.com/read/28811360/involvement-of-midkine-in-the-development-of-pulmonary-fibrosis
#1
Kenichi Misa, Yoshinori Tanino, Xintao Wang, Takefumi Nikaido, Masami Kikuchi, Yuki Sato, Ryuichi Togawa, Mishie Tanino, Shinya Tanaka, Kenji Kadomatsu, Mitsuru Munakata
Midkine is a low-molecular-weight heparin-binding protein that is strongly expressed mainly in the midgestation period and has various physiological activities such as in development and cell migration. Midkine has been reported to be strongly expressed in cancer cells and in inflammation and repair processes, and to be involved in the pathogenesis of various diseases. However, its role in the lung is poorly understood. In this study, we analyzed the clinical characteristics of idiopathic pulmonary fibrosis patients in relation to midkine expression and used a mouse bleomycin-induced pulmonary fibrosis model to investigate the role of midkine in pulmonary fibrosis...
August 2017: Physiological Reports
https://www.readbyqxmd.com/read/28809791/imaging-collagen-in-scar-tissue-developments-in-second-harmonic-generation-microscopy-for-biomedical-applications
#2
REVIEW
Leila Mostaço-Guidolin, Nicole L Rosin, Tillie-Louise Hackett
The ability to respond to injury with tissue repair is a fundamental property of all multicellular organisms. The extracellular matrix (ECM), composed of fibrillar collagens as well as a number of other components is dis-regulated during repair in many organs. In many tissues, scaring results when the balance is lost between ECM synthesis and degradation. Investigating what disrupts this balance and what effect this can have on tissue function remains an active area of research. Recent advances in the imaging of fibrillar collagen using second harmonic generation (SHG) imaging have proven useful in enhancing our understanding of the supramolecular changes that occur during scar formation and disease progression...
August 15, 2017: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/28808975/isolation-of-group-2-innate-lymphoid-cells-from-mouse-lungs
#3
Claudia U Duerr, Jörg H Fritz
The recently described group 2 innate lymphoid cells (ILC2) exert critical roles in type 2 immune responses, epithelial repair at mucosal tissues and metabolic homeostasis. ILC2 release large amounts of type 2 cytokines such as interleukin 4 (IL-4), IL-5, and IL-13, driving type 2 immunity such as the defense against helminths. However, if not tightly regulated ILC2 can trigger unwanted type 2 immunopathologies including allergic airway inflammation, airway hyper-responsiveness, and atopic dermatitis. Viral respiratory tract infections, archetypal triggers of type 1 immune responses, often give rise to pulmonary type 2 immunopathologies such as asthma and asthma exacerbations...
2017: Methods in Molecular Biology
https://www.readbyqxmd.com/read/28805776/-diagnostic-and-curative-bronchoscopy-for-purulent-destructive-pulmonary-diseases
#4
T P Pinchuk, O O Yasnogorodsky, Yu V Guryanova, M V Taldykin, A S Kachikin, Yu A Catane
AIM: To assess an efficacy of diagnostic and curative bronchoscopy in patients with purulent-destructive pulmonary diseases. MATERIAL AND METHODS: Diagnosis and treatment of 34 patients with purulent-destructive pulmonary diseases including small-focal destruction (14) and lung abscesses (19) were analyzed. 33 patients underwent diagnostic fibrobronchoscopy (FBS) with brush and transbronchial biopsy. Curative endoscopy included bronchial tree sanation, peribronchial administration of antibiotics (5) and transbronchial drainage of abscess (14)...
2017: Khirurgiia
https://www.readbyqxmd.com/read/28802254/tdp1-is-critical-for-the-repair-of-dna-breaks-induced-by-sapacitabine-a-nucleoside-also-targeting-atm-and-brca-deficient-tumors
#5
Muthana Al Abo, Hiroyuki Sasanuma, Xiaojun Liu, Vinodh N Rajapakse, Shar-Yin N Huang, Evgeny Kiselev, Shunichi Takeda, William Plunkett, Yves Pommier
2'-C-cyano-2'-deoxy-1-β-D-arabino-pentofuranosylcytosine (CNDAC) is the active metabolite of the anticancer drug, sapacitabine. CNDAC is incorporated into the genome during DNA replication and subsequently undergoes beta-elimination that generates single-strand breaks with abnormal 3'-ends. Because tyrosyl-DNA phosphodiesterase 1 (TDP1) selectively hydrolyzes non-phosphorylated 3'-blocking ends, we tested its role in the repair of CNDAC-induced DNA damage. We show that cells lacking TDP1 (avian TDP1-/- DT40 cells and human TDP1 KO TSCER2 and HCT116 cells) exhibit marked hypersensitivity to CNDAC...
August 11, 2017: Molecular Cancer Therapeutics
https://www.readbyqxmd.com/read/28801308/egfr-mutations-compromise-hypoxia-associated-radiation-resistance-through-impaired-replication-fork-associated-dna-damage-repair
#6
Mohammad Saki, Haruhiko Makino, Prashanthi Javvadi, Nozomi Tomimatsu, Lianghao Ding, Jennifer E Clark, Elaine Gavin, Kenichi Takeda, Joel Andrews, Debabrata Saha, Michael D Story, Sandeep Burma, Chaitanya Nirodi
Epidermal growth factor receptor (EGFR) signaling has been implicated in hypoxia-associated resistance to radiation or chemotherapy. Non-small cell lung carcinomas (NSCLC) with activating L858R or ΔE746-E750 EGFR mutations exhibit elevated EGFR activity and downstream signaling. Here, relative to wild type (WT) EGFR, mutant (MT) EGFR expression significantly increases radiosensitivity in hypoxic cells. Gene expression profiling in human bronchial epithelial cells (HBEC) revealed that MT-EGFR expression elevated transcripts related to cell cycle and replication in aerobic and hypoxic conditions and down-regulated RAD50, a critical component of non-homologous end-joining (NHEJ) and homologous recombination (HR) DNA repair pathways...
August 11, 2017: Molecular Cancer Research: MCR
https://www.readbyqxmd.com/read/28799781/microrna-29c-prevents-pulmonary-fibrosis-by-regulating-epithelial-cell-renewal-and-apoptosis
#7
Ting Xie, Jiurong Liang, Yan Geng, Ningshan Liu, Adrianne Kurkciyan, Vrishika Kulur, Dong Leng, Nan Deng, Zhenqiu Liu, Jianbo Song, Peter Chen, Paul W Noble, Dianhua Jiang
Successful repair and renewal of alveolar epithelial cells are critical in prohibiting the accumulation of myofibroblasts in pulmonary fibrogenesis. MicroRNAs (miRNAs) are multi-focal regulators involved in lung injury and repair. But the contribution of miRNAs to AEC2 renewal and apoptosis is incompletely understood. We report that microRNA-29c (MiR-29c) expression is lower in AEC2s of individuals with idiopathic pulmonary fibrosis (IPF) than healthy lungs. Epithelial cells overexpressing miR-29c show higher proliferative rate and viability...
August 11, 2017: American Journal of Respiratory Cell and Molecular Biology
https://www.readbyqxmd.com/read/28798251/lungmap-the-molecular-atlas-of-lung-development-program
#8
Maryanne E Ardini-Poleske, Robert Fred Clark, Charles Ansong, James P Carson, Richard A Corley, Gail H Deutsch, James S Hagood, Naftali Kaminski, Thomas J Mariani, Steven S Potter, Gloria S Pryhuber, David Warburton, Jeffrey A Whitsett, Scott M Palmer, Namasivayam Ambalavanan, The LungMAP Consortium
The National Heart Lung and Blood Institute is funding an effort to create a molecular atlas of the developing lung (LungMAP) to serve as a research resource and public education tool. The lung is a complex organ with lengthy development time driven by interactive gene networks and dynamic crosstalk among multiple cell types to control and coordinate lineage specification, cell proliferation, differentiation, migration, morphogenesis and injury repair. A better understanding of the processes that regulate lung development, particularly alveologenesis, will have significant impact on survival rates for premature infants born with incomplete lung development and will facilitate lung injury repair and regeneration in adults...
August 10, 2017: American Journal of Physiology. Lung Cellular and Molecular Physiology
https://www.readbyqxmd.com/read/28796249/rho-inhibition-by-lovastatin-affects-apoptosis-and-dsb-repair-of-primary-human-lung-cells-in-vitro-and-lung-tissue-in-vivo-following-fractionated-irradiation
#9
Verena Ziegler, Christian Henninger, Ioannis Simiantonakis, Marcel Buchholzer, Mohammad Reza Ahmadian, Wilfried Budach, Gerhard Fritz
Thoracic radiotherapy causes damage of normal lung tissue, which limits the cumulative radiation dose and, hence, confines the anticancer efficacy of radiotherapy and impacts the quality of life of tumor patients. Ras-homologous (Rho) small GTPases regulate multiple stress responses and cell death. Therefore, we investigated whether pharmacological targeting of Rho signaling by the HMG-CoA-reductase inhibitor lovastatin influences ionizing radiation (IR)-induced toxicity in primary human lung fibroblasts, lung epithelial and lung microvascular endothelial cells in vitro and subchronic mouse lung tissue damage following hypo-fractionated irradiation (4x4 Gy)...
August 10, 2017: Cell Death & Disease
https://www.readbyqxmd.com/read/28794965/efficacy-of-lung-volume-optimization-maneuver-monitored-by-optoelectronic-pletismography-in-the-management-of-congenital-diaphragmatic-hernia
#10
G Lista, I Bresesti, F Cavigioli, F Castoldi, E Lupo, A LoMauro, A Aliverti
Newborns affected by congenital diaphragmatic hernia (CDH) need cardio-respiratory stabilization before undergoing surgical repair. Open lung strategy is a well-established approach to optimize lung volume in preterm infants with Respiratory Distress Syndrome (RDS), using both High Frequency Oscillatory Ventilation (HFOV) and Conventional Mechanical Ventilation (CMV). We report a case of left CDH with severe lung hypoplasia, managed applying open lung strategy in HFOV (pre-surgery period) and in Assist-Control with Volume Guarantee (post-surgery period), guided by SpO2 changes, TcPO2 and TcPCO2 monitoring...
2017: Respiratory Medicine Case Reports
https://www.readbyqxmd.com/read/28794826/incidental-extravascular-findings-in-computed-tomographic-angiography-for-planning-or-monitoring-endovascular-aortic-aneurysm-repair-smoker-patients-increased-lung-cancer-prevalence
#11
Maria Antonietta Mazzei, Susanna Guerrini, Francesco Gentili, Giuseppe Galzerano, Francesco Setacci, Domenico Benevento, Francesco Giuseppe Mazzei, Luca Volterrani, Carlo Setacci
AIM: To validate the feasibility of high resolution computed tomography (HRCT) of the lung prior to computed tomography angiography (CTA) in assessing incidental thoracic findings during endovascular aortic aneurysm repair (EVAR) planning or follow-up. METHODS: We conducted a retrospective study among 181 patients (143 men, mean age 71 years, range 50-94) referred to our centre for CTA EVAR planning or follow-up. HRCT and CTA were performed before or after 1 or 12 mo respectively to EVAR in all patients...
July 28, 2017: World Journal of Radiology
https://www.readbyqxmd.com/read/28791007/prospective-study-of-a-cohort-of-russian-nijmegen-breakage-syndrome-patients-demonstrating-predictive-value-of-low-kappa-deleting-recombination-excision-circle-krec-numbers-and-beneficial-effect-of-hematopoietic-stem-cell-transplantation-hsct
#12
Elena Deripapa, Dmitry Balashov, Yulia Rodina, Alexandra Laberko, Natalya Myakova, Nataliia V Davydova, Maria A Gordukova, Dmitrii S Abramov, Galina V Pay, Larisa Shelikhova, Andrey P Prodeus, Mikhail A Maschan, Alexey A Maschan, Anna Shcherbina
BACKGROUND: Nijmegen breakage syndrome (NBS) is a combined primary immunodeficiency with DNA repair defect, microcephaly, and other phenotypical features. It predominantly occurs in Slavic populations that have a high frequency of carriers with the causative NBN gene c.657_661del5 mutation. Due to the rarity of the disease in the rest of the world, studies of NBS patients are few. Here, we report a prospective study of a cohort of Russian NBS patients. METHODS: 35 Russian NBS patients of ages 1-19 years, referred to our Center between years 2012 and 2016, were prospectively studied...
2017: Frontiers in Immunology
https://www.readbyqxmd.com/read/28790504/cigarette-smoke-and-dna-cleavage-promote-lung-inflammation-and-emphysema
#13
Farrah Kheradmand, R You, Bon Hee Gu, D B Corry
Smoking-related lung diseases are among the most preventable and incurable ailments in the world. Smokers are at increased risk of developing chronic obstructive pulmonary disease that can be further complicated by emphysema and lung cancer. A subset of former smokers shows persistent lung inflammation and progressive loss of lung function, indicating a role for activation of acquired immunity in smoking-induced lung diseases. In addition to the well-established noxious effects of volatile compounds in cigarette smoke, incomplete combustion of tobacco generates nano-sized carbon black (nCB) that accumulate in lung myeloid dendritic cells and macrophages...
2017: Transactions of the American Clinical and Climatological Association
https://www.readbyqxmd.com/read/28790194/characterization-of-the-potent-selective-nrf2-activator-pstc-in-cellular-and-in-vivo-models-of-pulmonary-oxidative-stress
#14
John G Yonchuk, Joseph P Foley, Brian J Bolognese, Gregory A Logan, William E Wixted, Jen-Pyng Kou, Diana G Chalupowicz, Heidi G Feldser, Yolanda Sanchez, Hong Nie, James F Callahan, Jeffrey K Kerns, Patricia L Podolin
Nrf2 is a key regulator of oxidative stress and cellular repair, and can be activated through inhibition of its cytoplasmic repressor, Keap1. Several small molecule disrupters of the Nrf2-Keap1 complex have recently been tested and/or approved for human therapeutic use but lack either potency or selectivity. The main goal of our work was to develop a potent, selective activator of NRF2 as protection against oxidative stress. In human bronchial epithelial cells our Nrf2 activator, PSTC, induced Nrf2 nuclear translocation, Nrf2-regulated gene expression, and downstream signaling events including induction of NQO1 enzyme activity and HO-1 protein expression, in an Nrf2-dependent manner...
August 8, 2017: Journal of Pharmacology and Experimental Therapeutics
https://www.readbyqxmd.com/read/28790180/pseudomonas-aeruginosa-lasb-protease-impairs-innate-immunity-in-mice-and-humans-by-targeting-a-lung-epithelial-cystic-fibrosis-transmembrane-regulator-il-6-antimicrobial-repair-pathway
#15
Vinciane Saint-Criq, Bérengère Villeret, Fabien Bastaert, Saadé Kheir, Aurélie Hatton, Aurélie Cazes, Zhou Xing, Isabelle Sermet-Gaudelus, Ignacio Garcia-Verdugo, Aleksander Edelman, Jean-Michel Sallenave
BACKGROUND: Pseudomonas aeruginosa lung infections are a huge problem in ventilator-associated pneumonia, cystic fibrosis (CF) and in chronic obstructive pulmonary disease (COPD) exacerbations. This bacterium secretes virulence factors that may subvert host innate immunity. OBJECTIVE: We evaluated the effect of P. aeruginosa elastase LasB, an important virulence factor secreted by the type II secretion system, on ion transport, innate immune responses and epithelial repair, both in vitro and in vivo...
August 8, 2017: Thorax
https://www.readbyqxmd.com/read/28780147/stem-cells-in-pulmonary-disease-and-regeneration
#16
REVIEW
Rohan R Nadkarni, Soumeya Abed, Jonathan S Draper
The epithelial cells lining the mammalian lung are subjected to constant interaction with the external environment, necessitating robust regeneration strategies to deal with cell loss due to natural turn over or damage arising via inhaled agents or disease. Since lung epithelium function extends beyond respiratory gas exchange to include roles such as immune defense and mucocillary clearance, a diverse complement of epithelial cell types exists that are regionally distributed along the respiratory tree and extensive surface area of the alveolar interface...
August 2, 2017: Chest
https://www.readbyqxmd.com/read/28775380/rage-inhibition-reduces-acute-lung-injury-in-mice
#17
Raiko Blondonnet, Jules Audard, Corinne Belville, Gael Clairefond, Jean Lutz, Damien Bouvier, Laurence Roszyk, Christelle Gross, Marilyne Lavergne, Marianne Fournet, Loic Blanchon, Caroline Vachias, Christelle Damon-Soubeyrand, Vincent Sapin, Jean-Michel Constantin, Matthieu Jabaudon
The receptor for advanced glycation end-products (RAGE) is involved in inflammatory response during acute respiratory distress syndrome (ARDS). Growing body of evidence support strategies of RAGE inhibition in experimental lung injury, but its modalities and effects remain underinvestigated. Anesthetised C57BL/6JRj mice were divided in four groups; three of them underwent orotracheal instillation of acid and were treated with anti-RAGE monoclonal antibody (mAb) or recombinant soluble RAGE (sRAGE), acting as a decoy receptor...
August 3, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28775097/platelet-derived-growth-factor-receptor-alpha-pdgfr%C3%AE-and-ras-related-c3-botulinum-toxin-substrate-1-rac1-regulate-mechano-responsiveness-of-lung-fibroblasts
#18
Stephen E McGowan, Diann M McCoy
Platelet-derived growth factor (PDGF)-A, which only signals through PDGF-receptor-alpha (PDGFRα) is required for secondary alveolar septal formation. Although PDGFRα distinguishes mesenchymal progenitor cells during the saccular stage, PDGFRα-expressing alveolar cells persist through adulthood. PDGF-A sustains proliferation, limits apoptosis, and maintains alpha-smooth muscle actin (αSMA) containing alveolar cells, which congregate at the alveolar entry ring at postnatal day (P)12. PDGFRα-expressing, αSMA-containing, alveolar cells re-distribute in the elongating septum, suggesting that they migrate to the alveolar entry rings where mechanical tension is higher...
August 3, 2017: American Journal of Physiology. Lung Cellular and Molecular Physiology
https://www.readbyqxmd.com/read/28775044/senolytic-drugs-target%C3%A2-alveolar-epithelial-cell-function-and-attenuate-experimental-lung-fibrosis-ex-vivo
#19
Mareike Lehmann, Martina Korfei, Kathrin Mutze, Stephan Klee, Wioletta Skronska-Wasek, Hani N Alsafadi, Chiharu Ota, Rita Costa, Herbert B Schiller, Michael Lindner, Darcy E Wagner, Andreas Günther, Melanie Königshoff
Idiopathic pulmonary fibrosis (IPF) is a devastating lung disease with poor prognosis and limited therapeutic options. The incidence of IPF increases with age, and ageing-related mechanisms such as cellular senescence have been proposed as pathogenic drivers. The lung alveolar epithelium represents a major site of tissue injury in IPF and senescence of this cell population is probably detrimental to lung repair. However, the potential pathomechanisms of alveolar epithelial cell senescence and the impact of senolytic drugs on senescent lung cells and fibrosis remain unknown...
August 2017: European Respiratory Journal: Official Journal of the European Society for Clinical Respiratory Physiology
https://www.readbyqxmd.com/read/28774356/prevention-of-bronchopulmonary-dysplasia-current-strategies
#20
Deepak Jain, Eduardo Bancalari
Bronchopulmonary dysplasia (BPD) is one of the few diseases affecting premature infants that have continued to evolve since its first description about half a century ago. The current form of BPD, a more benign and protracted respiratory failure in extremely preterm infants, is in contrast to the original presentation of severe respiratory failure with high mortality in larger premature infants. This new BPD is end result of complex interplay of various antenatal and postnatal factors causing lung injury and subsequent abnormal repair leading to altered alveolar and vascular development...
August 2017: Zhongguo Dang Dai Er Ke za Zhi, Chinese Journal of Contemporary Pediatrics
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