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Reactive oxygen species, lung disease

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https://www.readbyqxmd.com/read/29792199/nanoparticle-delivery-of-grape-seed-derived-proanthocyanidins-to-airway-epithelial-cells-dampens-oxidative-stress-and-inflammation
#1
S Castellani, A Trapani, A Spagnoletta, L di Toma, T Magrone, S Di Gioia, D Mandracchia, G Trapani, E Jirillo, M Conese
BACKGROUND: Chronic respiratory diseases, whose one of the hallmarks is oxidative stress, are still incurable and need novel therapeutic tools and pharmaceutical agents. The phenolic compounds contained in grape are endowed with well-recognized anti-oxidant, anti-inflammatory, anti-cancer, and anti-aging activities. Considering that natural anti-oxidants, such as proanthocyanidins, have poor water solubility and oral bioavailability, we have developed a drug delivery system based on solid lipid nanoparticles (SLN), apt to encapsulate grape seed extract (GSE), containing proanthocyanidins...
May 23, 2018: Journal of Translational Medicine
https://www.readbyqxmd.com/read/29781141/resveratrol-relieves-particulate-matter-mean-diameter-2-5-%C3%AE-m-induced-oxidative-injury-of-lung-cells-through-attenuation-of-autophagy-deregulation
#2
Yuan Li, Weiwei Qian, Dengdian Wang, Yu Meng, Xiaoqian Wang, Yue Chen, Xiaoting Li, Chunfeng Xie, Caiyun Zhong, Suming Fu
Oxidative stress and inflammation are critically implicated in ambient fine particulate matter (mean diameter < 2.5 μm; PM2.5 )-induced lung injury. Autophagy, playing a crucial role in various physiopathological conditions, modulates cellular homeostasis and stress adaptation. Resveratrol is a phytoalexin that exerts potent antioxidant effects on cardiopulmonary diseases. To date, the mechanisms by which resveratrol protects against PM2.5 remain to be elucidated. In the present study, we investigated the effect of resveratrol on PM2...
May 20, 2018: Journal of Applied Toxicology: JAT
https://www.readbyqxmd.com/read/29778012/reactive-oxygen-species-ros-activity-of-ambient-fine-particles-pm-2-5-measured-in-seoul-korea
#3
Jieun Park, Eun Ha Park, James J Schauer, Seung-Muk Yi, Jongbae Heo
Substantial increase in level of particulate matter has raised concerns in South Korea recently. Ambient particulate matter is classified as Group I carcinogen (IARC, 2013) and multiple epidemiological studies has demonstrated adverse health effects due to exposure of particulate matter. Fine particulate matter (PM2.5 ) which has a diameter <2.5 μm is likely to penetrate deeply into lung and is known to be eliciting adverse health effects. A number of epidemiological studies have been conducted on adverse health effects of PM-related diseases and mortality rate, yet particulate matter (PM)-induced reactive oxygen species (ROS) activity at the cellular level has not been actively studied in Korea...
May 16, 2018: Environment International
https://www.readbyqxmd.com/read/29765317/sodium-tanshinone-iia-sulfonate-decreases-cigarette-smoke-induced-inflammation-and-oxidative-stress-via-blocking-the-activation-of-mapk-hif-1%C3%AE-signaling-pathway
#4
Ruijuan Guan, Jian Wang, Ziying Li, Mingjing Ding, Defu Li, Guihua Xu, Tao Wang, Yuqin Chen, Qian Yang, Zhen Long, Zhou Cai, Chenting Zhang, Xue Liang, Lian Dong, Li Zhao, Haiyun Zhang, Dejun Sun, Wenju Lu
Aberrant activation of hypoxia-inducible factor (HIF)-1α is frequently encountered and promotes oxidative stress and inflammation in chronic obstructive pulmonary disease (COPD). The present study investigated whether sodium tanshinone IIA sulfonate (STS), a water-soluble derivative of tanshinone IIA, can mediate its effect through inhibiting HIF-1α-induced oxidative stress and inflammation in cigarette smoke (CS)-induced COPD in mice. Here, we found that STS improved pulmonary function, ameliorated emphysema and decreased the infiltration of inflammatory cells in the lungs of CS-exposed mice...
2018: Frontiers in Pharmacology
https://www.readbyqxmd.com/read/29761247/beneficial-effects-of-fenofibrate-in-pulmonary-hypertension-in-rats
#5
Palak Galhotra, Pankaj Prabhakar, Himanshu Meghwani, Soheb A Mohammed, Sanjay Kumar Banerjee, Sandeep Seth, Milind P Hote, K H Reeta, Ruma Ray, Subir Kumar Maulik
Pulmonary hypertension (PH) is a morbid complication of cardiopulmonary as well as several systemic diseases in humans. It is rapidly progressive and fatal if left untreated. In the present study, we investigated the effect of PPARα agonist fenofibrate (FF) on monocrotaline (MCT)-induced PH in rats. FF, because of its pleiotropic property, could be helpful in reducing inflammation, oxidative stress, and reactive oxygen species. On day 1, MCT (50 mg/kg, s.c.) was given to all the rats in MCT, sildenafil, and FF group except normal control rats...
May 14, 2018: Molecular and Cellular Biochemistry
https://www.readbyqxmd.com/read/29744335/detection-of-a-lipid-peroxidation-induced-dna-adduct-across-liver-disease-stages
#6
Heidi Coia, Ning Ma, Aiwu Ruth He, Bhaskar Kallakury, Deborah L Berry, Eva Permaul, Kepher H Makambi, Ying Fu, Fung-Lung Chung
Background: Oxidative stress and chronic inflammation can increase cellular levels of reactive oxygen species and lipid peroxidation (LPO) when associated with the pathogenesis of hepatocellular carcinoma (HCC), which can develop following the progression of steatosis, fibrosis and cirrhosis. Using a monoclonal antibody for cyclic γ-hydroxy-1, N2 -propanodeoxyguanosine (γ-OHPdG), a promutagenic DNA adduct formed endogenously by LPO, we examined its formation across liver disease stages to understand it's potential role in HCC development...
April 2018: Hepatobiliary Surgery and Nutrition
https://www.readbyqxmd.com/read/29741077/chronic-exposure-to-high-fat-diet-exacerbates-arsenic-induced-lung-damages-in-male-mice-possible-role-for-oxidative-stress
#7
Ali Asghar Hemmati, Soheila Alboghobeish, Akram Ahangarpour
Arsenic is a common environmental and occupational contaminant worldwide which can influence the development of respiratory diseases. In recent years, alteration in the lifestyle as well as food habits have led to increased consumption of food containing high levels of fat. The present study was designed to evaluate the effects of chronic exposure to a high-fat diet (HFD) on arsenic-induced damages and oxidative stress in the lung tissue of mice. This is the first study to reveal the effect of diet-induced obesity on arsenic-induced lung damages...
March 23, 2018: Monaldi Archives for Chest Disease, Archivio Monaldi Per le Malattie del Torace
https://www.readbyqxmd.com/read/29740674/deacetylmycoepoxydiene-is-an-agonist-of-rac1-and-simultaneously-induces-autophagy-and-apoptosis
#8
Wei Xie, Wei Zhang, Mingwei Sun, Chunhua Lu, Yuemao Shen
Lung cancer is the second most common cause of cancer-related death in the world. Most cases of lung cancer are not curable, especially non-small cell lung cancer (NSCLC). Thus, novel treatment targets for this malignant disease are urgently needed. Here, we demonstrate the feasibility of Rac1 in treating p53-null human NSCLC H1299 as a novel drug target. Deacetylmycoepoxydiene (DA-MED), a cytotoxic natural polyketide, functions as a Rac1 agonist in p53-null NSCLC H1299 cells. DA-MED treatment drives Rac1 activation and promotes robust production of reactive oxygen species, activating mitochondrial permeability transition and the intrinsic apoptotic pathway...
May 9, 2018: Applied Microbiology and Biotechnology
https://www.readbyqxmd.com/read/29740449/protective-role-of-nuclear-factor-erythroid-2-related-factor-2-against-respiratory-syncytial-virus-and-human-metapneumovirus-infections
#9
Teodora Ivanciuc, Elena Sbrana, Antonella Casola, Roberto P Garofalo
The pathogenesis of respiratory syncytial virus (RSV) infections is characterized by lower airway obstruction driven at great extent by the exuberant production of inflammatory cytokines. We have previously shown that RSV infection in vitro and in vivo results in production of reactive oxygen species along with reduction in the expression of antioxidant enzymes (AOEs), which are involved in maintaining the cellular oxidant-antioxidant balance. These events were associated with the concomitant reduction in nuclear factor erythroid 2-related factor 2 (Nrf2), a key transcription factor that controls AOE expression...
2018: Frontiers in Immunology
https://www.readbyqxmd.com/read/29723596/combination-of-urea-crosslinked-hyaluronic-acid-and-sodium-ascorbyl-phosphate-for-the-treatment-of-inflammatory-lung-diseases-an-in-vitro-study
#10
Arianna Fallacara, Laura Busato, Michele Pozzoli, Maliheh Ghadiri, Hui Xin Ong, Paul M Young, Stefano Manfredini, Daniela Traini
This in vitro study evaluated, for the first time, the safety and the biological activity of a novel urea-crosslinked hyaluronic acid component and sodium ascorbyl phosphate (HA-CL - SAP), singularly and/or in combination, intended for the treatment of inflammatory lung diseases. The aim was to understand if the combination HA-CL - SAP had an enhanced activity with respect to the combination native hyaluronic acid (HA) - SAP and the single SAP, HA and HA-CL components. Sample solutions displayed pH, osmolality and viscosity values suitable for lung delivery, and showed to be not toxic on epithelial Calu-3 cells at the concentration used in this study...
April 30, 2018: European Journal of Pharmaceutical Sciences
https://www.readbyqxmd.com/read/29723291/prion-protein-protects-mice-from-lethal-infection-with-influenza-a-viruses
#11
Junji Chida, Hideyuki Hara, Masashi Yano, Keiji Uchiyama, Nandita Rani Das, Etsuhisa Takahashi, Hironori Miyata, Yukiko Tomioka, Toshihiro Ito, Hiroshi Kido, Suehiro Sakaguchi
The cellular prion protein, designated PrPC, is a membrane glycoprotein expressed abundantly in brains and to a lesser extent in other tissues. Conformational conversion of PrPC into the amyloidogenic isoform is a key pathogenic event in prion diseases. However, the physiological functions of PrPC remain largely unknown, particularly in non-neuronal tissues. Here, we show that PrPC is expressed in lung epithelial cells, including alveolar type 1 and 2 cells and bronchiolar Clara cells. Compared with wild-type (WT) mice, PrPC-null mice (Prnp0/0) were highly susceptible to influenza A viruses (IAVs), with higher mortality...
May 3, 2018: PLoS Pathogens
https://www.readbyqxmd.com/read/29703899/mitochondria-targeted-probes-for-imaging-protein-sulfenylation
#12
Reetta J Holmila, Stephen A Vance, Xiaofei Chen, Hanzhi Wu, Kirtikar Shukla, Manish S Bharadwaj, Jade Mims, Zack Wary, Glen Marrs, Ravi Singh, Anthony J Molina, Leslie B Poole, S Bruce King, Cristina M Furdui
Mitochondrial reactive oxygen species (ROS) are essential regulators of cellular signaling, metabolism and epigenetics underlying the pathophysiology of numerous diseases. Despite the critical function of redox regulation in mitochondria, currently there are limited methods available to monitor protein oxidation in this key subcellular organelle. Here, we describe compounds for imaging sulfenylated proteins in mitochondria: DCP-NEt2 -Coumarin (DCP-NEt2 C) and rhodamine-based DCP-Rho1. Side-by-side comparison studies are presented on the reactivity of DCP-NEt2 C and DCP-Rho1 with a model protein sulfenic acid (AhpC-SOH) and mitochondrial localization to identify optimized experimental conditions for labeling and visualization of protein sulfenylation that would be independent of mitochondria membrane potential and would not impact mitochondrial function...
April 27, 2018: Scientific Reports
https://www.readbyqxmd.com/read/29703148/deletion-of-soluble-epoxide-hydrolase-attenuates-mice-hyperoxic-acute-lung-injury
#13
Li-Ping Liu, Bin Li, Tian-Kui Shuai, Lei Zhu, Yu-Min Li
BACKGROUND: Recent studies reported that soluble epoxide hydrolase (sEH) plays an important role in lung diseases. However, the role of sEH in hyperoxia-induced ALI is unclear. METHODS: ALI was induced by exposure to 100% oxygen in an airtight cage for 72 h in wild-type (WT) and sEH gene deletion (EPHX2-/- ) mice. ALI was assessed by the lung dry/wet ratio, alveolar capillary protein leak, and the infiltration of inflammatory cells in the lung. RESULTS: Hyperoxia elevated sEH activity in WT mice...
April 27, 2018: BMC Anesthesiology
https://www.readbyqxmd.com/read/29700332/mitoq-supplementation-prevent-long-term-impact-of-maternal-smoking-on-renal-development-oxidative-stress-and-mitochondrial-density-in-male-mice-offspring
#14
Suporn Sukjamnong, Yik Lung Chan, Razia Zakarya, Long The Nguyen, Ayad G Anwer, Amgad A Zaky, Rachana Santiyanont, Brian G Oliver, Ewa Goldys, Carol A Pollock, Hui Chen, Sonia Saad
To investigate the effect of maternal MitoQ treatment on renal disorders caused by maternal cigarette smoke exposure (SE). We have demonstrated that maternal SE during pregnancy increases the risk of developing chronic kidney disease (CKD) in adult offspring. Mitochondrial oxidative damage contributes to the adverse effects of maternal smoking on renal disorders. MitoQ is a mitochondria-targeted antioxidant that has been shown to protect against oxidative damage-related pathologies in many diseases. Female Balb/c mice (8 weeks) were divided into Sham (exposed to air), SE (exposed to cigarette smoke) and SEMQ (exposed to cigarette smoke with MitoQ supplemented from mating) groups...
April 26, 2018: Scientific Reports
https://www.readbyqxmd.com/read/29696082/oxidant-status-iron-homeostasis-and-carotenoid-levels-of-copd-patients-with-advanced-disease-and-ltot
#15
M Kentson, P Leanderson, P Jacobson, H L Persson
Background : The pathogenesis of chronic obstructive pulmonary disease (COPD) is associated with oxidative stress. Both iron (Fe) and oxygen are involved in the chemical reactions that lead to increased formation of reactive oxygen species. Oxidative reactions are prevented by antioxidants such as carotenoids. Objective : To study the differences in Fe status, carotenoid levels, healthy eating habits, and markers of inflammation and oxidative damage on proteins in subjects with severe COPD ± long-term oxygen therapy (LTOT) and lung-healthy control subjects...
2018: European Clinical Respiratory Journal
https://www.readbyqxmd.com/read/29672589/neutrophil-killing-of-mycobacterium-abscessus-by-intra-and-extracellular-mechanisms
#16
Kenneth C Malcolm, Silvia M Caceres, Kerstin Pohl, Katie R Poch, Audrey Bernut, Laurent Kremer, Donna L Bratton, Jean-Louis Herrmann, Jerry A Nick
Mycobacterium abscessus, a rapidly growing nontuberculous mycobacterium, are increasingly present in soft tissue infections and chronic lung diseases, including cystic fibrosis, and infections are characterized by growth in neutrophil-rich environments. M. abscessus is observed as two distinct smooth and rough morphotypes. The environmental smooth morphotype initiates infection and has a relatively limited ability to activate neutrophils. The rough morphotype has increased virulence and immunogenicity. However, the neutrophil response to the rough morphotype has not been explored...
2018: PloS One
https://www.readbyqxmd.com/read/29655793/inhibition-of-nlrp9b-attenuates-acute-lung-injury-through-suppressing-inflammation-apoptosis-and-oxidative-stress-in-murine-and-cell-models
#17
Qiu Yanling, Cheng Xiaoning, Bai Fei, Fang Liyun, Hu Huizhong, Sun Daqing
Acute lung injury (ALI), known a severe disease along with high morbidity and mortality, is lacking of specific therapies. Inflammation, apoptosis and oxidative stress are critical pathologies that contribute to ALI. Recently, there is study indicated that NLRP9b, a NOD-like receptor (NLR) member, is critical in modulation of inflammatory response. However, the effects of NLRP9b on sepsis-associated ALI, and the underlying molecular mechanism have not been understood. In the present study, the wild type (WT) and NLRP9b-knockout (NLRP9b-/- ) mice with C57B/L6 background were subjected to a cecal ligation and puncture (CLP) for ALI murine model establishment...
April 12, 2018: Biochemical and Biophysical Research Communications
https://www.readbyqxmd.com/read/29651422/-aspergillus-induced-superoxide-production-by-cystic-fibrosis-phagocytes-is-associated-with-disease-severity
#18
Shan F Brunel, Janet A Willment, Gordon D Brown, Graham Devereux, Adilia Warris
Aspergillus fumigatus infects up to 50% of cystic fibrosis (CF) patients and may play a role in progressive lung disease. As cystic fibrosis transmembrane conductance regulator is expressed in cells of the innate immune system, we hypothesised that impaired antifungal immune responses play a role in CF-related Aspergillus lung disease. Peripheral blood mononuclear cells, polymorphonuclear cells (PMN) and monocytes were isolated from blood samples taken from CF patients and healthy volunteers. Live-cell imaging and colorimetric assays were used to assess antifungal activity in vitro ...
April 2018: ERJ Open Research
https://www.readbyqxmd.com/read/29651165/the-mitochondrial-citrate-carrier-slc25a1-drives-stemness-and-therapy-resistance-in-non-small-cell-lung-cancer
#19
Harvey R Fernandez, Shreyas M Gadre, Mingjun Tan, Garrett T Graham, Rami Mosaoa, Martin S Ongkeko, Kyu Ah Kim, Rebecca B Riggins, Erika Parasido, Iacopo Petrini, Simone Pacini, Amrita Cheema, Rency Varghese, Habtom W Ressom, Yuwen Zhang, Christopher Albanese, Aykut Üren, Mikell Paige, Giuseppe Giaccone, Maria Laura Avantaggiati
Therapy resistance represents a clinical challenge for advanced non-small cell lung cancer (NSCLC), which still remains an incurable disease. There is growing evidence that cancer-initiating or cancer stem cells (CSCs) provide a reservoir of slow-growing dormant populations of cells with tumor-initiating and unlimited self-renewal ability that are left behind by conventional therapies reigniting post-therapy relapse and metastatic dissemination. The metabolic pathways required for the expansion of CSCs are incompletely defined, but their understanding will likely open new therapeutic opportunities...
April 12, 2018: Cell Death and Differentiation
https://www.readbyqxmd.com/read/29630123/il-33-induced-inflammation-exacerbated-the-development-of-chronic-obstructive-pulmonary-disease-through-oxidative-stress
#20
S-C Zou, J Jiang, J Song
OBJECTIVE: We aimed at exploring the role of IL-33 in mouse chronic obstructive pulmonary disease and its potential molecular mechanism. MATERIALS AND METHODS: The chronic obstructive pulmonary disease (COPD) mice model was established by cigarette smoking (CS). COPD mice were randomly assigned into PBS group and IL-33 antibody group. The peripheral blood and lung tissues of mice from two groups were collected for the following experiments. Pathological changes of the lung tissues in both groups were analyzed by hematoxylin and eosin (HE) staining...
March 2018: European Review for Medical and Pharmacological Sciences
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