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Respiratory disease antioxidant

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https://www.readbyqxmd.com/read/29689339/mitochondrial-dysfunction-is-implicated-in-retinoic-acid-induced-spina-bifida-aperta-in-rat-fetuses
#1
Jia Xue, Hui Gu, Dan Liu, Wei Ma, Xiaowei Wei, Lianshuai Zhao, Yusi Liu, Chaonan Zhang, Zhengwei Yuan
Neural tube defects (NTDs) are the most common and severe congenital malformations, which result from failure of the neural tube to close during embryonic development. The etiology of NTDs is complex, caused by interactions between genetic defects and environmental factors, but the exact mechanisms of this disease are still not fully understood. We herein employ a Seahorse Bioscience microplate-based extracellular flux (XF) analyzer to determine mitochondrial function and quantify respiratory coupling to various bioenergetic functions using specific pharmacological inhibitors of bioenergetic pathways...
April 21, 2018: International Journal of Developmental Neuroscience
https://www.readbyqxmd.com/read/29684352/nrf2-activation-protects-against-intratracheal-lps-induced-mouse-murine-acute-respiratory-distress-syndrome-by-regulating-macrophage-polarization
#2
Juan Wei, Guannan Chen, Xuan Shi, Huanping Zhou, Meiyun Liu, Yuanli Chen, Di Feng, Pengcheng Zhang, Lingmin Wu, Xin Lv
The transcription factor nuclear factor E2-related factor 2 (Nrf2) is known to control the expression of antioxidant response elements and cytoprotective genes and modulate inflammatory response, helping to ameliorate damage in many diseases. Exactly how Nrf2 regulates innate inflammatory homeostasis remains unclear. In this study, we provide in vitro and in vivo evidence that Nrf2 plays a crucial role in macrophage polarization and acute respiratory distress syndrome (ARDS). We conducted in vitro experiments using a mouse alveolar macrophage cell line as well as primary cultures of macrophages in which cells were exposed to lipopolysaccharide (LPS) or interferon-γ in order to mimic ARDS, in the presence or absence of the Nrf2 activator tert-butylhydroquinone (tBHQ)...
April 20, 2018: Biochemical and Biophysical Research Communications
https://www.readbyqxmd.com/read/29670681/diaphragm-muscle-weakness-following-acute-sustained-hypoxic-stress-in-the-mouse-is-prevented-by-pretreatment-with-n-acetyl-cysteine
#3
Andrew J O'Leary, Sarah E Drummond, Deirdre Edge, Ken D O'Halloran
Oxygen deficit (hypoxia) is a major feature of cardiorespiratory diseases characterized by diaphragm dysfunction, yet the putative role of hypoxic stress as a driver of diaphragm dysfunction is understudied. We explored the cellular and functional consequences of sustained hypoxic stress in a mouse model. Adult male mice were exposed to 8 hours of normoxia, or hypoxia (FiO2  = 0.10) with or without antioxidant pretreatment (N-acetyl cysteine, 200 mg/kg i.p.). Ventilation and metabolism were measured. Diaphragm muscle contractile function, myofibre size and distribution, gene expression, protein signalling cascades, and oxidative stress (TBARS) were determined...
2018: Oxidative Medicine and Cellular Longevity
https://www.readbyqxmd.com/read/29628291/citri-reticulatae-pericarpium-chenpi-botany-ethnopharmacology-phytochemistry-and-pharmacology-of-a-frequently-used-traditional-chinese-medicine
#4
REVIEW
Xin Yu, Shuang Sun, Yuyan Guo, Yan Liu, Dayu Yang, Guoyu Li, Shaowa Lü
ETHNOPHARMACOLOGICAL RELEVANCE: Citri Reticulatae Pericarpium (Rutaceae, CRP), commonly called as Chenpi () in Chinese, is most frequently used as a qi-regulating drug in thousands of Chinese medicine prescriptions. CRP is found mainly in major citrus-producing areas such as the Guangdong, Guangxi, Sichuan, Fujian, and Zhejiang Provinces of China. Since thousands of years in China, CRP has been used widely in clinical practice to treat nausea, vomiting, indigestion, anepithymia, diarrhea, cough, expectoration, and so on...
April 5, 2018: Journal of Ethnopharmacology
https://www.readbyqxmd.com/read/29614025/vitamin-e-supplementation-ameliorates-newcastle-disease-virus-induced-oxidative-stress-and-alleviates-tissue-damage-in-the-brains-of-chickens
#5
Zaib Ur Rehman, Xusheng Qiu, Yingjie Sun, Ying Liao, Lei Tan, Cuiping Song, Shengqing Yu, Zhuang Ding, Muhammad Munir, Venugopal Nair, Chunchun Meng, Chan Ding
Newcastle disease (ND), characterized by visceral, respiratory, and neurological pathologies, causes heavy economic loss in the poultry industry around the globe. While significant advances have been made in effective diagnosis and vaccine development, molecular mechanisms of ND virus (NDV)-induced neuropathologies remain elusive. In this study, we report the magnitude of oxidative stress and histopathological changes induced by the virulent NDV (ZJ1 strain) and assess the impact of vitamin E in alleviating these pathologies...
April 3, 2018: Viruses
https://www.readbyqxmd.com/read/29609025/regulation-of-growth-intestinal-microbiota-non-specific-immune-response-and-disease-resistance-of-sea-cucumber-apostichopus-japonicus-selenka-in-biofloc-systems
#6
Jinghua Chen, Yichao Ren, Yuquan Li, Bin Xia
Bioflocs are not only a source of supplemental nutrition but also provide substantial probiotic bacteria and bioactive compounds, which play an important role in improving physiological health of aquatic organisms. A 60-day experiment was conducted to investigate the growth, intestinal microbiota, non-specific immune response and disease resistance of sea cucumber in biofloc systems with different carbon sources (glucose, sucrose and starch). Control (no biofloc) and three biofloc systems were set up, and each group has three replicates...
March 30, 2018: Fish & Shellfish Immunology
https://www.readbyqxmd.com/read/29605674/therapeutic-potentials-of-houttuynia-cordata-thunb-against-inflammation-and-oxidative-stress-a-review
#7
REVIEW
Khanchuila Shingnaisui, Tapan Dey, Prasenjit Manna, Jatin Kalita
ETHNOPHARMACOLOGICAL RELEVANCE: Houttuynia cordata Thunb. (Family: Saururaceae) is an herbaceous perennial plant that grows in moist and shady places. The plant is well known among the people of diverse cultures across Japan, Korea, China and North-East India for its medicinal properties. Traditionally the plant is used for its various beneficial properties against inflammation, pneumonia, severe acute respiratory syndrome, muscular sprain, stomach ulcer etc. Oxidative stress and inflammation were found to be linked with most of the diseases in recent times...
March 29, 2018: Journal of Ethnopharmacology
https://www.readbyqxmd.com/read/29569912/free-radical-production-and-oxidative-stress-in-lung-tissue-of-patients-exposed-to-sulfur-mustard-an-overview-of-cellular-and-molecular-mechanisms
#8
Asghar Beigi Harchegani, Eisa Tahmasbpour, Hojat Borna, Ali Imamy, Mostafa Ghanei, Alireza Shahriary
Sulfur mustard (SM) is a chemical alkylating compound that primary targets lung tissue. It causes a wide variety of pathological effects in respiratory system such as chronic bronchitis, bronchiolitis obliterans, necrosis of the mucosa and inflammation, chronic obstructive pulmonary disease (COPD) and pulmonary fibrosis. However, molecular and cellular mechanisms for these pathologies are still unclear. Oxidative stress (OS) induced by reactive oxygen species (ROS) is likely a significant mechanism by which SM leads to cell death and tissues injury...
March 23, 2018: Chemical Research in Toxicology
https://www.readbyqxmd.com/read/29565500/expression-of-nrf2-keap1-are-signal-pathway-in-traumatic-lung-injury-and-functional-study
#9
L-Y Hu, J-B Cui, X-M Xu, Z-H Huang, H-T Jiao
OBJECTIVE: Traumatic lung injury (TLI) can cause inflammation and oxidative stress, or even leads to acute respiratory distress syndrome (ARDS) and death. Nuclear factor erythroid-2 related factor 2 (Nrf2)-Kelch-like ECH-associated protein 1 (Keap1)-antioxidant response element (ARE) signal pathway participates in disease occurrence and progression via regulating inflammatory and oxidative stress response, but with its expression and functional roles in TLI largely unknown. MATERIALS AND METHODS: Wistar rats were randomly divided into control group, TLI group by crushing method, and Nrf2 activation group which received Nrf2 specific agonist sulforaphane 30 min before TLI treatment...
March 2018: European Review for Medical and Pharmacological Sciences
https://www.readbyqxmd.com/read/29564976/antioxidant-properties-of-crocus-sativus-l-and-its-constituents-and-relevance-to-neurodegenerative-diseases-focus-on-alzheimer-s-and-parkinson-s-disease
#10
Kyriaki Hatziagapiou, Eleni Kakouri, George I Lambrou, Kostas Bethanis, Petros A Tarantilis
BACKGROUND: Reactive oxygen species and reactive nitrogen species, which are collectively called reactive oxygen nitrogen species, are inevitable by-products of cellular metabolic redox reactions, such as oxidative phosphorylation in the mitochondrial respiratory chain, phagocytosis, reactions of biotransformation of exogenous and endogenous substrata in endoplasmic reticulum, eicosanoid synthesis, and redox reactions in the presence of metal with variable valence. Among medicinal plants there is growing interest in Crocus Sativus L...
March 20, 2018: Current Neuropharmacology
https://www.readbyqxmd.com/read/29564809/kynurenic-acid-restores-nrf2-levels-and-prevents-quinolinic-acid-induced-toxicity-in-rat-striatal-slices
#11
Fernanda Silva Ferreira, Helena Biasibetti-Brendler, Paula Pierozan, Felipe Schmitz, Carolina Gessinger Bertó, Caroline Acauan Prezzi, Vanusa Manfredini, Angela T S Wyse
Kynurenic acid (KYNA) and quinolinic acid (QUIN) are metabolites produced in the degradation of tryptophan and have important neurological activities. KYNA/QUIN ratio changes are known to be associated with central nervous system disorders, such Alzheimer, Parkinson, and Huntington diseases. In the present study, we investigate the ability of KYNA in prevent the first events preceding QUIN-induced neurodegeneration in striatal slices of rat. We evaluated the protective effect of KYNA on oxidative status (reactive oxygen species production, antioxidant enzymes activities, lipid peroxidation, nitrite levels, protein and DNA damage, and iNOS immunocontent), mitochondrial function (mitochondrial mass, membrane potential, and respiratory chain enzymes), and Na+ ,K+ -ATPase in striatal slices of rats treated with QUIN...
March 21, 2018: Molecular Neurobiology
https://www.readbyqxmd.com/read/29551638/an-oxidation-resistant-recombinant-alpha-1-antitrypsin-produced-in-nicotiana-benthamiana
#12
David Z Silberstein, Kalimuthu Karuppanan, Hnin Hnin Aung, Ching-Hsien Chen, Carroll E Cross, Karen A McDonald
Proteases and reactive oxygen species (ROS) have long been implicated in playing key roles in host tissue injury at sites of inflammatory processes dominated by macrophage activations and/or neutrophil infiltrations. Imbalances between proteases/antiproteases and ROS/antioxidants are recognized to contribute to amplification of inflammatory-based host tissue injury. This has been especially well-documented in such respiratory tract diseases as chronic obstructive pulmonary disease, cystic fibrosis, and acute respiratory distress syndrome...
March 15, 2018: Free Radical Biology & Medicine
https://www.readbyqxmd.com/read/29526616/n-acetylcysteine-and-vitamin-e-rescue-animal-longevity-and-cellular-oxidative-stress-in-pre-clinical-models-of-mitochondrial-complex-i-disease
#13
Erzsebet Polyak, Julian Ostrovsky, Min Peng, Stephen D Dingley, Mai Tsukikawa, Young Joon Kwon, Shana E McCormack, Michael Bennett, Rui Xiao, Christoph Seiler, Zhe Zhang, Marni J Falk
Oxidative stress is a known contributing factor in mitochondrial respiratory chain (RC) disease pathogenesis. Yet, no efficient means exists to objectively evaluate the comparative therapeutic efficacy or toxicity of different antioxidant compounds empirically used in human RC disease. We postulated that pre-clinical comparative analysis of diverse antioxidant drugs having suggested utility in primary RC disease using animal and cellular models of RC dysfunction may improve understanding of their integrated effects and physiologic mechanisms, and enable prioritization of lead antioxidant molecules to pursue in human clinical trials...
February 23, 2018: Molecular Genetics and Metabolism
https://www.readbyqxmd.com/read/29515461/bone-marrow-derived-mononuclear-cell-therapy-in-papain-induced-experimental-pulmonary-emphysema
#14
Mariana N Machado, Flavia Mazzoli-Rocha, Natália V Casquilho, Tatiana Maron-Gutierrez, Victor H Ortenzi, Marcelo M Morales, Rodrigo S Fortunato, Walter A Zin
Murine papain-induced emphysema is a model that reproduces many of the features found in patients. Bone marrow-derived mononuclear cells (BMMC) have already been used to repair the alveolar epithelium in respiratory diseases, but not in the papain model. Thus, we hypothesized that BMMC could prevent the pathophysiological processes in papain-induced experimental emphysema. Female BALB/c mice received intratracheal instillation of 50 μL of saline (S groups) or papain (P groups, 10 IU/50 μl of saline) on days 1 and 7 of the experimental protocol...
2018: Frontiers in Physiology
https://www.readbyqxmd.com/read/29514147/update-on-vitamin-e-and-its-potential-role-in-preventing-or-treating-bronchopulmonary-dysplasia
#15
Cosby A Stone, Cindy T McEvoy, Judy L Aschner, Ashudee Kirk, Christian Rosas-Salazar, Joan M Cook-Mills, Paul E Moore, William F Walsh, Tina V Hartert
Vitamin E is obtained only through the diet and has a number of important biological activities, including functioning as an antioxidant. Evidence that free radicals may contribute to pathological processes such as bronchopulmonary dysplasia (BPD), a disease of prematurity associated with increased lung injury, inflammation and oxidative stress, led to trials of the antioxidant vitamin E (α-tocopherol) to prevent BPD with variable results. These trials were all conducted at supraphysiologic doses and 2 of these trials utilized a formulation containing a potentially harmful excipient...
March 7, 2018: Neonatology
https://www.readbyqxmd.com/read/29512444/pharmacokinetic-and-toxicological-characteristics-of-tripterigium-glycosides-and-their-derivatives
#16
Xi Du, Makafui Nyagblordzro, Lijun An, Xue Gao, Lemei Du, Yangyang Wang, Gregory Ondieki, Siambi Kikete, Xin He
Tripterigium wilfordii glycosides (TWG) demonstrate paramount bioactive effectiveness in the management of many autoimmune diseases, such as rheumatoid arthritis, psoriasis, and nephrotic syndrome. However, its side effects on the hepatic, nephrotic, reproductive, and cardiovascular systems have limited its immense therapeutic potentials. Triptolide (TP) and Celastrol (CL), the leading bioactive as well as toxic constituents of TWG, have been widely studied. These studies have documented the key mechanisms that trigger the toxic reactions and the precautionary measures that could prevent and reduce such reactions...
March 2, 2018: Current Drug Metabolism
https://www.readbyqxmd.com/read/29487870/the-assessment-of-the-integrated-antioxidant-system-of-the-body-in-the-course-of-radon-therapy-a-pilot-study
#17
Jadwiga Kuciel-Lewandowska, Jan Gnus, Lilla Pawlik-Sobecka, Sylwia Płaczkowska, Izabela Kokot, Michał Kasperczak, Małgorzata Paprocka-Borowicz
Introduction: The sources of Reactive Oxidative Species (ROS) in the organism are the respiratory processes occurring in cells catalyzed by different enzymes. Operation of ROS is balanced by antioxidants, the compounds; although present in low concentrations, they significantly inhibit the degree of oxidation of particular molecules. The Aim of the Study: The aim of this study was to assess the changes in the integrated antioxidant system under the influence of radon therapy in osteoarthritis patients...
2018: BioMed Research International
https://www.readbyqxmd.com/read/29471443/board-invited-review-immunomodulatory-potential-of-dietary-soybean-derived-isoflavones-and-saponins-in-pigs
#18
B N Smith, R N Dilger
In this review, the potential for use of soy-derived bioactive compounds as immunomodulatory feed additives in pigs is discussed. Soy is a major component of the modern U.S. swine diet in today's commercial industry, providing the bulk of dietary AA necessary for growth and production. However, soy use has generally been limited in early growth phases, during which the risks of immunological insult and disease are among the highest. Improvements of soybean processing and development of soy protein products with little to no antinutritional factors have made soy more appropriate for use in young pigs but additional processing may impact bioactive compound levels in the feed...
February 17, 2018: Journal of Animal Science
https://www.readbyqxmd.com/read/29454969/jip3-knockout-protects-mice-against-high-fat-diet-induced-liver-injury
#19
Xiao-Jun Ma, Hai-Zhou Xing, Gao-Fei Ren, Xiao-Juan Rao, Zhi-Zhen Li
Multiple pathways contribute to nonalcoholic fatty liver disease (NAFLD) in response to high fat diets (HFD). A homolog of mammalian JNK-interacting protein 3 (JIP3), also known as JSAP-1, activates different components in various signaling pathways to modulate cellular processes. The purpose of this study was to examine the role of JIP3 in obesity-related pathologies pathway. Wild-type (WT) C57BL/6 and JIP3-knockout (JIP3-/- ) mice were randomized to chow or HFD. HFD-fed WT mice increased hepatic JIP3 expression...
February 15, 2018: Biochemical and Biophysical Research Communications
https://www.readbyqxmd.com/read/29438939/at-rvd1-repairs-mouse-lung-after-cigarette-smoke-induced-emphysema-via-downregulation-of-oxidative-stress-by-nrf2-keap1-pathway
#20
Sara Vergel Posso, Nicolas Quesnot, João Alfredo Moraes, Lycia Brito-Gitirana, Emanuel Kennedy-Feitosa, Marina Valente Barroso, Luís Cristóvão Porto, Manuella Lanzetti, Samuel Santos Valença
Long-term exposure to cigarette smoke (CS) results in alveolar parenchyma destruction due to chronic inflammatory response and the imbalance between oxidants and antioxidants, and proteases and antiproteases. Emphysema is the main symptom of chronic obstructive pulmonary disease. Current treatment focuses on relieving respiratory symptoms, and inflammation resolution failure is an important pathophysiological element of the disease. Specialized pro-resolving mediators (SPMs) synthesized endogenously during resolution processes demonstrated beneficial effects in murine models of airway inflammation...
February 10, 2018: International Immunopharmacology
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