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Reactive oxygen species, lung disease

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https://www.readbyqxmd.com/read/29132140/mitochondria-targeted-peptide-attenuates-mitochondrial-dysfunction-controls-inflammation-and-protects-against-spinal-cord-injury-induced-lung-injury
#1
Liu-Long Zhu, Mao-Qiang Li, Fan He, Shao-Bo Zhou, Wu Jiang
BACKGROUND/AIMS: Spinal cord injury (SCI) is a common and devastating disease, which results in systemic inflammatory response syndrome and secondary lung injury. Mitochondrial dysfunction and inflammation are closely related to lung injury in diverse disease models. No studies have demonstrated the effects of mitochondrial targeted peptide SS-31 in a mouse model of SCI-induced lung injury. METHODS: Immediately after injury, mice in the treatment groups received a daily, single-dose intraperitoneal injection of SS-31 and for the next 2 days...
November 13, 2017: Cellular Physiology and Biochemistry
https://www.readbyqxmd.com/read/29118026/carbon-monoxide-in-lung-cell-physiology-and-disease
#2
Stefan W Ryter, Kevin C Ma, Augustine M K Choi
Carbon monoxide (CO) is an endogenously produced gas that has gained recognition as a biological signal transduction effector with properties similar, but not identical, to that of nitric oxide (NO). CO, which binds primarily to heme iron, may activate the hemoprotein guanylate cyclase (sGC), although with lower potency than NO. Furthermore, CO can modulate the activities of several cellular signaling molecules such as p38 MAPK, ERK1/2, JNK, AKT, NF-κB, and others. Emerging studies suggest that mitochondria, the energy-generating organelle of cells, represent a key target of CO action in eukaryotes...
November 8, 2017: American Journal of Physiology. Cell Physiology
https://www.readbyqxmd.com/read/29111690/aerosol-health-effects-from-molecular-to-global-scales
#3
Manabu Shiraiwa, Kayo Ueda, Andrea Pozzer, Gerhard Lammel, Christopher J Kampf, Akihiro Fushimi, Shinichi Enami, Andrea M Arangio, Janine Fröhlich-Nowoisky, Yuji Fujitani, Akiko Furuyama, Pascale Sylvie Jeanne Lakey, Jos Lelieveld, Kurt Lucas, Yu Morino, Ulrich Pöschl, Satoshi Takahama, Akinori Takami, Haijie Tong, Bettina Weber, Ayako Yoshino, Kei Sato
Poor air quality is the globally largest environmental health risk. Epidemiological studies have uncovered clear relationships of gaseous pollutants and particulate matter (PM) with adverse health outcomes, including mortality by cardiovascular and respiratory diseases. Studies of health impacts by aerosols are highly multidisciplinary with a broad range of scales in space and time. We assess recent advances and future challenges regarding aerosol effects on health from molecular to global scales, through epidemiological studies, field measurements, health-related properties of PM, and multiphase interactions of oxidants and PM upon respiratory deposition...
November 7, 2017: Environmental Science & Technology
https://www.readbyqxmd.com/read/29104545/the-adenosine-hypothesis-revisited-modulation-of-coupling-between-myocardial-perfusion-and-arterial-compliance
#4
Geoffrey P Dobson, Aryadi Arsyad, Hayley L Letson
For over four decades the thoracic aortic ring model has become one of the most widely used methods to study vascular reactivity and electromechanical coupling. A question that is rarely asked, however, is what function does a drug-mediated relaxation (or contraction) in this model serve in the intact system? The physiological significance of adenosine relaxation in rings isolated from large elastic conduit arteries from a wide range of species remains largely unknown. We propose that adenosine relaxation increases aortic compliance in acute stress states and facilitates ventricular-arterial (VA) coupling, and thereby links compliance and coronary artery perfusion to myocardial energy metabolism...
2017: Frontiers in Physiology
https://www.readbyqxmd.com/read/29080401/reactive-oxygen-species-as-signaling-molecules-in-the-development-of-lung-fibrosis
#5
REVIEW
Francisco J Gonzalez-Gonzalez, Navdeep Chandel, Manu Jain, G R Scott Budinger
Pulmonary fibrosis is a relatively rare but devastating disease characterized by the excessive deposition of extracellular matrix. The increased matrix results in reduced lung compliance and increased work of breathing, while the obliteration of alveolar-capillary structures can result in hypoxemia and pulmonary hypertension, which manifests clinically as worsening shortness of breath, respiratory failure, and death. Unbiased genome-wide association studies combined with animal models suggest that damage to the alveolar epithelium is the initiating factor in pulmonary fibrosis...
October 10, 2017: Translational Research: the Journal of Laboratory and Clinical Medicine
https://www.readbyqxmd.com/read/29047102/reactive-oxygen-species-in-copd-related-vascular-remodeling
#6
Li Zuo, Chia-Chen Chuang, Alexander D Clark, Davis E Garrison, Jamie L Kuhlman, David C Sypert
The pathogenesis of chronic obstructive pulmonary disease (COPD) is a multifaceted process involving the alteration of pulmonary vasculature. Such vascular remodeling can be associated with inflammation, shear stress, and hypoxia-conditions commonly seen in patients with lung diseases. Particularly, the overproduction of reactive oxygen species (ROS) in the diseased lungs contributes greatly to pulmonary vascular remodeling. ROS play an important role in vascular homeostasis, yet excessive ROS can alter pulmonary vasculature and impair lung function, as implicated in COPD at all stages...
2017: Advances in Experimental Medicine and Biology
https://www.readbyqxmd.com/read/29047088/lung-ischaemia-reperfusion-injury-the-role-of-reactive-oxygen-species
#7
Oleg Pak, Akylbek Sydykov, Djuro Kosanovic, Ralph T Schermuly, Alexander Dietrich, Katrin Schröder, Ralf P Brandes, Thomas Gudermann, Natascha Sommer, Norbert Weissmann
Lung ischaemia-reperfusion injury (LIRI) occurs in many lung diseases and during surgical procedures such as lung transplantation. The re-establishment of blood flow and oxygen delivery into the previously ischaemic lung exacerbates the ischaemic injury and leads to increased microvascular permeability and pulmonary vascular resistance as well as to vigorous activation of the immune response. These events initiate the irreversible damage of the lung with subsequent oedema formation that can result in systemic hypoxaemia and multi-organ failure...
2017: Advances in Experimental Medicine and Biology
https://www.readbyqxmd.com/read/29047085/redox-dependent-calpain-signaling-in-airway-and-pulmonary-vascular-remodeling-in-copd
#8
Laszlo Kovacs, Yunchao Su
The calcium-dependent cytosolic, neutral, thiol endopeptidases, calpains, perform limited cleavage of their substrates thereby irreversibly changing their functions. Calpains have been shown to be involved in several physiological processes such as cell motility, proliferation, cell cycle, signal transduction, and apoptosis. Overactivation of calpain or mutations in the calpain genes contribute to a number of pathological conditions including neurodegenerative disorders, rheumatoid arthritis, cancer, and lung diseases...
2017: Advances in Experimental Medicine and Biology
https://www.readbyqxmd.com/read/29047083/altered-redox-balance-in-the-development-of-chronic-hypoxia-induced-pulmonary-hypertension
#9
Nikki L Jernigan, Thomas C Resta, Laura V Gonzalez Bosc
Normally, the pulmonary circulation is maintained in a low-pressure, low-resistance state with little resting tone. Pulmonary arteries are thin-walled and rely heavily on pulmonary arterial distension and recruitment for reducing pulmonary vascular resistance when cardiac output is elevated. Under pathophysiological conditions, however, active vasoconstriction and vascular remodeling lead to enhanced pulmonary vascular resistance and subsequent pulmonary hypertension (PH). Chronic hypoxia is a critical pathological factor associated with the development of PH resulting from airway obstruction (COPD, sleep apnea), diffusion impairment (interstitial lung disease), developmental lung abnormalities, or high altitude exposure (World Health Organization [WHO]; Group III)...
2017: Advances in Experimental Medicine and Biology
https://www.readbyqxmd.com/read/29047079/molecular-basis-of-nitrative-stress-in-the-pathogenesis-of-pulmonary-hypertension
#10
Colin E Evans, You-Yang Zhao
Pulmonary hypertension (PH) is a lung vascular disease with marked increases in pulmonary vascular resistance and pulmonary artery pressure (>25 mmHg at rest). In PH patients, increases in pulmonary vascular resistance lead to impaired cardiac output and reduced exercise tolerance. If untreated, PH progresses to right heart failure and premature lethality. The mechanisms that control the pathogenesis of PH are incompletely understood, but evidence from human and animal studies implicate nitrative stress in the development of PH...
2017: Advances in Experimental Medicine and Biology
https://www.readbyqxmd.com/read/29039495/protective-effects-of-neem-azadirachta-indica-a-juss-leaf-extract-against-cigarette-smoke-and-lipopolysaccharide-induced-pulmonary-inflammation
#11
Jae-Won Lee, Hyung Won Ryu, So-Yeon Park, Hyun Ah Park, Ok-Kyoung Kwon, Heung Joo Yuk, Krishna K Shrestha, Minwoo Park, Jung Hee Kim, Sangwoo Lee, Sei-Ryang Oh, Kyung-Seop Ahn
Neem (Azadirachta indica A. Juss.) leaf has been reported to exert anti-inflammatory, antibacterial and antioxidant effects. The purpose of this study was to investigate the protective effects of neem leaf extract (NLE) against cigarette smoke (CS)- and lipopolysaccharide (LPS)-induced pulmonary inflammation. Treatment with NLE significantly attenuated the infiltration of inflammatory cells, such as neutrophils and macrophages in bronchoalveolar lavage fluid (BALF). NLE also reduced the production of reactive oxygen species and the activity of neutrophil elastase in BALF...
October 10, 2017: International Journal of Molecular Medicine
https://www.readbyqxmd.com/read/29029603/the-pathophysiological-role-of-mitochondrial-oxidative-stress-in-lung-diseases
#12
REVIEW
Xiaojing Liu, Zhihong Chen
Mitochondria are critically involved in reactive oxygen species (ROS)-dependent lung diseases, such as lung fibrosis, asbestos, chronic airway diseases and lung cancer. Mitochondrial DNA (mtDNA) encodes mitochondrial proteins and is more sensitive to oxidants than nuclear DNA. Damage to mtDNA causes mitochondrial dysfunction, including electron transport chain impairment and mitochondrial membrane potential loss. Furthermore, damaged mtDNA also acts as a damage-associated molecular pattern (DAMP) that drives inflammatory and immune responses...
October 13, 2017: Journal of Translational Medicine
https://www.readbyqxmd.com/read/29022266/cardiac-aging-benefits-of-exercise-nrf2-activation-and-antioxidant-signaling
#13
Madhusudhanan Narasimhan, Namakkal-Soorappan Rajasekaran
Cardiovascular dysfunction and heart failure associated with aging not only impairs the cardiac function but also the quality of life eventually decreasing the life expectancy of the elderly. Notably, cardiac tissue can prematurely age under certain conditions such as genetic mutation, persistent redox stress and overload, aberrant molecular signaling, DNA damage, telomere attrition, and other pathological insults. While cardiovascular-related morbidity and mortality is on the rise and remains a global health threat, there has been only little to moderate improvements in its medical management...
2017: Advances in Experimental Medicine and Biology
https://www.readbyqxmd.com/read/29018774/influenza-a-virus-as-a-predisposing-factor-for-cryptococcosis
#14
Lorena V N Oliveira, Marliete C Costa, Thaís F F Magalhães, Rafael W Bastos, Patrícia C Santos, Hellem C S Carneiro, Noelly Q Ribeiro, Gabriella F Ferreira, Lucas S Ribeiro, Ana P F Gonçalves, Caio T Fagundes, Marcelo A Pascoal-Xavier, Julianne T Djordjevic, Tania C Sorrell, Daniele G Souza, Alexandre M V Machado, Daniel A Santos
Influenza A virus (IAV) infects millions of people annually and predisposes to secondary bacterial infections. Inhalation of fungi within the Cryptococcus complex causes pulmonary disease with secondary meningo-encephalitis. Underlying pulmonary disease is a strong risk factor for development of C. gattii cryptococcosis though the effect of concurrent infection with IAV has not been studied. We developed an in vivo model of Influenza A H1N1 and C. gattii co-infection. Co-infection resulted in a major increase in morbidity and mortality, with severe lung damage and a high brain fungal burden when mice were infected in the acute phase of influenza multiplication...
2017: Frontiers in Cellular and Infection Microbiology
https://www.readbyqxmd.com/read/28990085/rhoa-regulates-lipopolysaccharide%C3%A2-induced-lung-cell-injury-via-the-wnt-%C3%AE-%C3%A2-catenin-pathway
#15
Guanhua Chen, Xuedong Sun, Chunxiao Dong
Ras homolog family member A (RhoA) has been reported to be involved in numerous biological processes; however, the effects of RhoA on acute lung injury (ALI) have yet to be reported. The present study aimed to explore how RhoA affects cell viability, reactive oxygen species (ROS) activity and cell apoptosis in a cell model of lipopolysaccharide (LPS)‑induced ALI. An MTT assay, flow cytometry, reverse transcription‑quantitative polymerase chain reaction and western blotting were used to determine the effects of RhoA on cell viability, apoptosis and ROS activity...
December 2017: Molecular Medicine Reports
https://www.readbyqxmd.com/read/28982074/autophagy-regulates-duox1-localization-and-superoxide-production-in-airway-epithelial-cells-during-chronic-il-13-stimulation
#16
John D Dickinson, Jenea M Sweeter, Kristi J Warren, Iman M Ahmad, Xavier De Deken, Matthew C Zimmerman, Steven L Brody
The airway epithelium is a broad interface with the environment, mandating well-orchestrated responses to properly modulate inflammation. Classically, autophagy is a homeostatic pathway triggered in response to external cellular stresses, and is elevated in chronic airway diseases. Recent findings highlight the additional role of autophagy in vesicle trafficking and protein secretion, implicating autophagy pathways in complex cellular responses in disease. Th2 cytokines, IL-13 and IL-4, are increased in asthma and other airway diseases contributing to chronic inflammation...
September 22, 2017: Redox Biology
https://www.readbyqxmd.com/read/28978522/cigarette-smoke-activates-cftr-through-ros-stimulated-camp-signaling-in-human-bronchial-epithelial-cells
#17
Francis H Wong, Asmahan AbuArish, Elizabeth Matthes, Mark J Turner, Lana E Greene, Alexandre Cloutier, Renaud Robert, David Y Thomas, Gonzalo Cosa, Andre M Cantin, John W Hanrahan
Air pollution stimulates airway epithelial secretion through a cholinergic reflex that is unaffected in cystic fibrosis (CF), yet a strong correlation is observed between passive smoke exposure in the home and impaired lung function in CF children. Our aim was to study the effects of low smoke concentrations on CFTR function in vitro. Cigarette smoke extract stimulated robust anion secretion that was transient, mediated by cystic fibrosis transmembrane conductance regulator (CFTR), and dependent on cAMP-dependent protein kinase activation...
October 4, 2017: American Journal of Physiology. Cell Physiology
https://www.readbyqxmd.com/read/28976728/design-of-peptide-based-probes-for-the-microscale-detection-of-reactive-oxygen-species
#18
Chun-Lan Keng, Ying-Chi Lin, Wei-Lung Tseng, Chi-Yu Lu
Reactive oxygen species (ROS) can induce oxidative stress and are associated with cell death and chronic diseases in organisms. In the treatment of disease, drugs that induce ROS are associated with many side effects and unpleasant symptoms. Therefore, during the assessment of new drugs and candidate compounds, ROS generation is an issue of concern, because ROS can modify proteins, lipids, and nucleic acids within organisms and alter their biological functions. In this work, we designed a peptide-based probe for the rapid (<10 min) high-throughput survey of oxidative stress induced by clinical drugs at the microliter level...
October 4, 2017: Analytical Chemistry
https://www.readbyqxmd.com/read/28956747/mechanisms-of-lung-cancer-caused-by-cooking-fumes-exposure-a-minor-review-%C3%A2
#19
Chun-Yan Wang, Li-Fang Liu, Xiao-Li Liu, Wen-Jun Chen, Guo-Ping He
Cooking fumes (CFs) are mixtures of many toxic components, such as aldehydes, heterocyclic amines, polycyclic aromatic hydrocarbons, fat aerosols and particulate matters. CFs exposure has been proven to be associated with many diseases. Lung cancer takes the leading place among the diseases being reported caused by CFs exposure. Molecular and biochemical studies have found that CFs exposure may lead to lung cancer by gene damage, formation of reactive oxygen species, blockage of related proteins' function, and even cell death...
September 27, 2017: Chinese Medical Sciences Journal, Chung-kuo i Hsüeh K'o Hsüeh Tsa Chih
https://www.readbyqxmd.com/read/28949372/physalis-peruviana-l-inhibits-airway-inflammation-induced-by-cigarette-smoke-and-lipopolysaccharide-through-inhibition-of-extracellular-signal-regulated-kinase-and-induction-of-heme-oxygenase-1
#20
Hyun Ah Park, Jae-Won Lee, Ok-Kyoung Kwon, Gilhye Lee, Yourim Lim, Jung Hee Kim, Jin-Hyub Paik, Sangho Choi, Imam Paryanto, Prasetyawan Yuniato, Doo-Young Kim, Hyung Won Ryu, Sei-Ryang Oh, Seung Jin Lee, Kyung-Seop Ahn
Physalis peruviana L. (PP) is a medicinal herb that has been confirmed to have several biological activities, including anticancer, antioxidant and anti-inflammatory properties. The aim of the present study was to evaluate the protective effect of PP on cigarette smoke (CS)- and lipopolysaccharide (LPS)-induced pulmonary inflammation. Treatment with PP significantly reduced the influx of inflammatory cells in the bronchoalveolar lavage fluid (BALF) and lung of mice with CS- and LPS-induced pulmonary inflammation...
September 15, 2017: International Journal of Molecular Medicine
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