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Heme oxygenase

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https://www.readbyqxmd.com/read/29682161/transduced-pep-1-heme-oxygenase-1-fusion-protein-attenuates-lung-injury-in-septic-shock-rats
#1
Xue-Tao Yan, Xiang-Hu He, Yan-Lin Wang, Zong-Ze Zhang, Jun-Jiao Tang
Oxidative stress and inflammation have been identified to play a vital role in the pathogenesis of lung injury induced by septic shock. Heme oxygenase-1 (HO-1), an effective antioxidant and anti-inflammatory and antiapoptotic substance, has been used for the treatment of heart, lung, and liver diseases. Thus, we postulated that administration of exogenous HO-1 protein transduced by cell-penetrating peptide PEP-1 has a protective role against septic shock-induced lung injury. Septic shock produced by cecal ligation and puncture caused severe lung damage, manifested in the increase in the lung wet/dry ratio, oxidative stress, inflammation, and apoptosis...
2018: Oxidative Medicine and Cellular Longevity
https://www.readbyqxmd.com/read/29679979/acute-dose-of-melatonin-via-nrf2-dependently-prevents-acute-ethanol-induced-neurotoxicity-in-the-developing-rodent-brain
#2
Tahir Ali, Shafiq Ur Rehman, Fawad Ali Shah, Myeong Ok Kim
BACKGROUND: Melatonin is a well-known potent endogenous antioxidant pharmacological agent with significant neuroprotective actions. Here in the current study, we explored the nuclear factor erythroid 2-related factor 2 (Nrf2) gene-dependent antioxidant mechanism underlying the neuroprotective effects of the acute melatonin against acute ethanol-induced elevated reactive oxygen species (ROS)-mediated neuroinflammation and neurodegeneration in the developing rodent brain. METHODS: In vivo rat pups were co-treated with a single dose of acute ethanol (5 g/kg, subcutaneous (S...
April 21, 2018: Journal of Neuroinflammation
https://www.readbyqxmd.com/read/29679944/epigallocatechin-3-gallate-attenuates-microcystin-lr-induced-apoptosis-in-human-umbilical-vein-endothelial-cells-through-activation-of-the-nrf2-ho-1-pathway
#3
Jun Shi, Min Zhang, Libin Zhang, Huipin Deng
Our previous study showed that the tea extract, epigallocatechin-3-gallate (EGCG), protects against microcystin-LR (MC-LR) -mediated apoptosis of human umbilical vein endothelial cells (HUVECs); however, the mechanism underlying MC-LR-induced HUVEC apoptosis remains incompletely understood. In this study, we investigated whether the nuclear factor erythroid-like 2 (NRF2)/heme oxygenase-1 (HO-1) pathway, which regulates antioxidant transcriptional regulation of oxidative stress and apoptosis, is involved in this process...
April 18, 2018: Environmental Pollution
https://www.readbyqxmd.com/read/29679467/salidroside-protects-against-advanced-glycation-end-products-induced-vascular-endothelial-dysfunction
#4
Peng Zhang, Yuanmin Li, Rong Guo, Wangfu Zang
BACKGROUND Salidroside, the major active compound in Rhodiola, has been reported to provide beneficial effects on cardiovascular diseases, but its effects on diabetes-induced vascular endothelial dysfunction are less known. Here, we examined the protective effects of salidroside on endothelial function in diabetes and explored the potential underlying mechanism. MATERIAL AND METHODS First, we assessed the endothelium-dependent relaxation response to acetylcholine, with or without salidroside treatment, in aortas isolated from Sprague-Dawley rats...
April 21, 2018: Medical Science Monitor: International Medical Journal of Experimental and Clinical Research
https://www.readbyqxmd.com/read/29678721/acute-tissue-reactions-inner-segment-pathology-and-effects-of-the-antioxidant-%C3%AE-1-microglobulin-in-an-in-vitro-model-of-retinal-detachment
#5
Fredrik Ghosh, Bo Åkerström, Jesper Bergwik, Hodan Abdshill, Lina Gefors, Linnéa Taylor
The purpose of this study was to explore acute tissue reactions, ultrastructural photoreceptor morphology with emphasis on inner segments, and the effect of antioxidant treatment in an in vitro model of rhegmatogenous retinal detachment (RRD). A previously described method of RRD simulation was used with adult retinal porcine explants kept free-floating in culture medium with or without treatment with the radical scavenger α1 -microglobulin (A1M). Explants were examined at 5 time points from 1 to 24 h using transmission electron microscopy as well as quantitative real-time PCR (RT-PCR) to quantify gene expression of the cell stress marker heat shock protein 70 (Hsp70) and oxidative stress marker heme oxygenase (HO-1)...
April 17, 2018: Experimental Eye Research
https://www.readbyqxmd.com/read/29678719/carnosic-acid-attenuates-cartilage-degeneration-through-induction-of-heme-oxygenase-1-in-human-articular-chondrocytes
#6
Hiroyuki Ishitobi, Yohei Sanada, Yoshio Kato, Yasunari Ikuta, Sachi Shibata, Satoshi Yamasaki, Martin K Lotz, Kiminori Matsubara, Shigeru Miyaki, Nobuo Adachi
Osteoarthritis (OA) is common age-associated disease, and associated with joint pain, mobility limitations and compromised overall quality of life. OA treatment is currently limited to pain management and joint arthroplasty at end stage disease. Oxidative damage to cartilage extracellular matrix and cells is an important mechanism in joint aging and OA pathogenesis. Evidence from in vitro and in vivo models of OA suggests that pharmaceuticals and natural compounds with antioxidant properties reduce expression of mediators of OA pathogenesis and OA severity in animal models...
April 17, 2018: European Journal of Pharmacology
https://www.readbyqxmd.com/read/29675576/gintonin-mitigates-mptp-induced-loss-of-nigrostriatal-dopaminergic-neurons-and-accumulation-of-%C3%AE-synuclein-via-the-nrf2-ho-1-pathway
#7
Min Gi Jo, Muhammad Ikram, Myeung Hoon Jo, Lang Yoo, Kwang Chul Chung, Seung-Yeol Nah, Hongik Hwang, Hyewhon Rhim, Myeong Ok Kim
Gintonin, a ginseng-derived glycolipoprotein isolated from ginseng, has been shown to be neuroprotective in several neurological disorders such as Alzheimer's disease models and depressive-like behaviors. In this study, we sought to investigate the potential protective mechanisms of gintonin in an in vivo MPTP and in vitro MPP+ -mediated Parkinson's disease (PD) model. We hypothesized that activation of nuclear factor erythroid 2-related factor 2/heme oxygenase-1 (Nrf2/HO-1, potential therapeutic targets for neurodegeneration) with gintonin could abrogate PD-associated neurotoxicity by modulating the accumulation of α-synuclein, neuroinflammation, and apoptotic cell death in an MPTP/MPP+ models of PD...
April 19, 2018: Molecular Neurobiology
https://www.readbyqxmd.com/read/29674687/celecoxib-exerts-protective-effects-in-the-vascular-endothelium-via-cox-2-independent-activation-of-ampk-creb-nrf2-signalling
#8
Fahad Al-Rashed, Damien Calay, Marie Lang, Clare C Thornton, Andrea Bauer, Allan Kiprianos, Dorian O Haskard, Anusha Seneviratne, Joseph J Boyle, Alex H Schönthal, Caroline P Wheeler-Jones, Justin C Mason
Although concern remains about the athero-thrombotic risk posed by cyclo-oxygenase (COX)-2-selective inhibitors, recent data implicates rofecoxib, while celecoxib appears equivalent to NSAIDs naproxen and ibuprofen. We investigated the hypothesis that celecoxib activates AMP kinase (AMPK) signalling to enhance vascular endothelial protection. In human arterial and venous endothelial cells (EC), and in contrast to ibuprofen and naproxen, celecoxib induced the protective protein heme oxygenase-1 (HO-1). Celecoxib derivative 2,5-dimethyl-celecoxib (DMC) which lacks COX-2 inhibition also upregulated HO-1, implicating a COX-2-independent mechanism...
April 19, 2018: Scientific Reports
https://www.readbyqxmd.com/read/29674665/the-proximal-tubular-%C3%AE-7-nicotinic-acetylcholine-receptor-attenuates-ischemic-acute-kidney-injury-through-akt-pkc-signaling-mediated-ho-1-induction
#9
Hwajin Kim, So Ra Kim, Jihyun Je, Kyuho Jeong, Sooji Kim, Hye Jung Kim, Ki Churl Chang, Sang Won Park
Activation of the α7 nicotinic acetylcholine receptor (α7nAChR) has been shown to attenuate excessive inflammation by inhibiting proinflammatory cytokines during ischemia-reperfusion (IR) injury; however, the underlying kidney-specific molecular mechanisms remain unclear. The protective action of α7nAChR against renal IR injury was investigated using a selective α7nAChR agonist and antagonist. α7nAChR activation reduced plasma creatinine levels and tubular cell damage, whereas α7nAChR inhibition aggravated the IR-induced phenotype...
April 20, 2018: Experimental & Molecular Medicine
https://www.readbyqxmd.com/read/29673592/intravenous-vitamin-c-attenuates-hemorrhagic-shock-related-renal-injury-through-the-induction-of-sirt1-in-rats
#10
Meng-Zhi Qi, Yi Yao, Rong-Li Xie, Si-Lei Sun, Wen-Wu Sun, Jin-Long Wang, Ying Chen, Bing Zhao, Er-Zhen Chen, En-Qiang Mao
To investigate the effect of intravenous Vitamin C (VC) on hemorrhagic shock (HS)-associated rat renal injury and the involved mechanism. Thirty SD rats were randomly assigned to the sham surgery (sham), hemorrhagic shock (HS), HS+100 mg/kg VC (H + VL), HS+500 mg/kg VC (H + VH) and HS+100 mg/kg VC + EX527 (H + VL + E) groups. Tissue and blood samples were collected 6 h after surgery. Kidney pathological changes were scored. Creatinine (CRE), blood urea nitrogen (BUN), tumor necrosis factor-α (TNF-α), and interleukin-1β (IL-1β) levels in serum and Vitamin C levels and superoxide dismutase (SOD) activity and the ability to suppress hydroxyl radical (RAFHR) in plasma were measured...
April 16, 2018: Biochemical and Biophysical Research Communications
https://www.readbyqxmd.com/read/29672963/butein-protects-the-nonalcoholic-fatty-liver-through-mitochondrial-reactive-oxygen-species-attenuation-in-rats
#11
Ghedeir M Alshammari, Aristatile Balakrishnan, Thirunavukkarasu Chinnasamy
One of the worldwide metabolic health dilemma is nonalcoholic fatty liver diseases (NAFLD). Researchers are searching effective drug to manage NAFLD patients. One of the best way to manage the metabolic imperfection is through natural principal isolated from different sources. Butein, a natural compound known to have numerous pharmacological application. In the current study we assessed the therapeutic effect of butein administration on liver function tests, oxidative stress, antioxidants, lipid abnormalities, serum inflammatory cytokines, and mitochondrial reactive oxygen species levels, in rats with methionine-choline deficient (MCD) diet induced NAFLD...
April 19, 2018: BioFactors
https://www.readbyqxmd.com/read/29670682/noninvasive-real-time-characterization-of-renal-clearance-kinetics-in-diabetic-mice-after-receiving-danshensu-treatment
#12
Lei Gao, Yiu-Wa Kwan, Andrew C Bulmer, Christopher W K Lai
Danshensu (DSS) is an active ingredient extracted from the root of the Danshen that could ameliorate oxidative stress via upregulation of heme oxygenase- (HO-) 1. Little is known about the treatment effects of DSS on kidney function in diabetic mice. Therefore, the primary aim of the present study was to characterize the renal clearance kinetics of IRdye800CW in db/db mice after DSS treatment. The secondary aim was to measure several biomarkers of renal function and oxidative stress (urinary F2-isoprostane, HO-1 in kidney and serum bilirubin)...
2018: Oxidative Medicine and Cellular Longevity
https://www.readbyqxmd.com/read/29669713/heme-oxygenase-1-in-macrophages-drives-septic-cardiac-dysfunction-via-suppressing-lysosomal-degradation-of-inducible-nitric-oxide-synthase
#13
Liangliang Jia, Yaping Wang, Yidong Wang, Yuankun Ma, Jian Shen, Zurong Fu, Yue Wu, Sheng'an Su, Yuhao Zhang, Zhejun Cai, Jian'an Wang, Meixiang Xiang
<u>Rationale:</u> To date, our understanding of the role of heme oxygenase-1 (HO-1) in inflammatory diseases has mostly been limited to its catalytic function and the potential for its heme-related catabolic products to suppress inflammation and oxidative stress. Whether and how HO-1 in macrophages plays a role in the development of septic cardiac dysfunction has never been explored. <u>Objective:</u> Here, we investigated the role of macrophage-derived HO-1 in septic cardiac dysfunction...
April 18, 2018: Circulation Research
https://www.readbyqxmd.com/read/29669436/heme-oxygenase-1-influences-satellite-cells-and-progression-of-duchenne-muscular-dystrophy-in-mice
#14
Katarzyna Pietraszek-Gremplewicz, Magdalena Kozakowska, Iwona Bronisz-Budzynska, Maciej Ciesla, Olga Mucha, Paulina Podkalicka, Magdalena Madej, Urszula Glowniak, Krzysztof Tomasz Szade, Jacek Stepniewski, Mateusz Jez, Kalina Andrysiak, Karolina Bukowska-Strakova, Anna Kaminska, Anna Kostera-Pruszczyk, Alicja Jozkowicz, Agnieszka Loboda, Jozef Dulak
AIMS: Muscle damage in Duchenne Muscular Dystrophy (DMD) caused by the lack of dystrophin is strongly linked to inflammation. Heme oxygenase-1 (HO-1; Hmox1) is an anti-inflammatory and cytoprotective enzyme affecting myoblasts differentiation by inhibiting myomirs. The role of HO-1 has not been so far well addressed in DMD. RESULTS: In dystrophin-deficient mdx mice expression of Hmox1 in limb skeletal muscles and diaphragm is higher than in wild-type animals, being consistently elevated from 8 up to 52 weeks, both in myofibres and inflammatory leukocytes...
April 19, 2018: Antioxidants & Redox Signaling
https://www.readbyqxmd.com/read/29668779/effects-of-propofol-pretreatment-on-lung-morphology-and-heme-oxygenase-1-expression-in-oleic-acid-induced-acute-lung-injury-in-rats
#15
Zelong Tan, Huaizhou Wang, Jing Sun, Mingsheng Li
PURPOSE: To investigate the effects of propofol pretreatment on lung morphology and heme oxygenase-1 expression in oleic acid -induced acute lung injury in rats. METHODS: A total of 32 male Sprague-Dawley rats (250-300g) were randomly divided into the following four groups (n=8/group): group C, group OA, group OA+PR, and group OA+IX to compare related parameter changes. RESULTS: PaO2, PCO2, and PaO2/FiO2 were significantly different among the four treatment groups (P<0...
March 2018: Acta Cirúrgica Brasileira
https://www.readbyqxmd.com/read/29668263/neuroprotective-effect-of-alpha-linolenic-acid-against-a%C3%AE-mediated-inflammatory-responses-in-c6-glial-cell
#16
Ah Young Lee, Myoung Hee Lee, Sanghyun Lee, Eun Ju Cho
Therapeutic approaches for neurodegeneration, such as Alzheimer's disease (AD), have been widely studied. One of the critical hallmarks of AD is accumulation of amyloid beta (Aβ). Aβ induces neurotoxicity and releases inflammatory mediators or cytokines through activation of glial cell, and these pathological features are observed in AD patient's brain. The purpose of this study is to investigate the protective effect of alpha-linolenic acid (ALA) on Aβ25-35 -induced neurotoxicity in C6 glial cells. Exposure of C6 glial cells to 50 μM 25-35 caused cell death, over-production of nitric oxide (NO), and pro-inflammatory cytokines release [interleukin (IL)-6 and tumor necrosis factor-α], while treatment of ALA increased cell viability and markedly attenuated Aβ25-35 -induced excessive production of NO and those inflammatory cytokines...
April 18, 2018: Journal of Agricultural and Food Chemistry
https://www.readbyqxmd.com/read/29667667/%C3%AE-cyperone-inhibits-lps-induced-inflammation-in-bv-2-cells-through-activation-of-akt-nrf2-ho-1-and-suppression-of-the-nf-%C3%AE%C2%BAb-pathway
#17
Bingxu Huang, Dewei He, Guangxin Chen, Xin Ran, Wenjin Guo, Xingchi Kan, Wei Wang, Dianfeng Liu, Shoupeng Fu, Juxiong Liu
Accumulating evidence has shown that activated microglia cause inflammatory immune response, which could lead to neurodegenerative diseases such as Parkinson's disease and Alzheimer's disease. α-Cyperone, one of the main ingredients of Cyperus rotundus oil, has been reported to possess anti-inflammatory activity in activated macrophages. In this study, we found that α-cyperone markedly decreased the production of tumor necrosis factor-α (TNF-α), interleukin-6 (IL-6) and interleukin-1β (IL-1β) in LPS-induced BV-2 cells...
April 18, 2018: Food & Function
https://www.readbyqxmd.com/read/29664060/specialized-pro-resolving-mediators-regulate-alveolar-fluid-clearance-during-acute-respiratory-distress-syndrome
#18
REVIEW
Qian Wang, Song-Fan Yan, Yu Hao, Sheng-Wei Jin
Objective: Acute respiratory distress syndrome (ARDS) is an acute and lethal clinical syndrome that is characterized by the injury of alveolar epithelium, which impairs active fluid transport in the lung, and impedes the reabsorption of edema fluid from the alveolar space. This review aimed to discuss the role of pro-resolving mediators on the regulation of alveolar fluid clearance (AFC) in ARDS. Data Sources: Articles published up to September 2017 were selected from the PubMed, with the keywords of "alveolar fluid clearance" or "lung edema" or "acute lung injury" or "acute respiratory distress syndrome", and "specialized pro-resolving mediators" or "lipoxin" or "resolvin" or "protectin" or "maresin" or "alveolar epithelial cells" or "aspirin-triggered lipid mediators" or "carbon monoxide and heme oxygenase" or "annexin A1"...
April 20, 2018: Chinese Medical Journal
https://www.readbyqxmd.com/read/29663102/docosahexaenoic-acid-dha-provides-neuroprotection-in-traumatic-brain-injury-models-via-activating-nrf2-are-signaling
#19
Wei Zhu, Yuexia Ding, Wei Kong, Tuo Li, Hongguang Chen
In this study, we explored the neuroprotective effects of docosahexaenoic acid (DHA) in traumatic brain injury (TBI) models. In this study, we first confirmed that DHA was neuroprotective against TBI via the NSS test and Morris water maze experiment. Western blot was conducted to identify the expression of Bax, caspase-3, and Bcl-2. And the cell apoptosis of the TBI models was validated by TUNEL staining. Relationships between nuclear factor erythroid 2-related factor 2-antioxidant response element (Nrf2-ARE) pathway-related genes and DHA were explored by RT-PCR and Western blot...
April 16, 2018: Inflammation
https://www.readbyqxmd.com/read/29662895/heme-oxygenase-1-activity-as-a-correlate-to-exercise-mediated-amelioration-of-cognitive-decline-and-neuropathological-alterations-in-an-aging-rat-model-of-dementia
#20
Andrea Kurucz, Mariann Bombicz, Rita Kiss, Dániel Priksz, Balázs Varga, Tibor Hortobágyi, György Trencsényi, Renáta Szabó, Anikó Pósa, Rudolf Gesztelyi, Zoltán Szilvássy, Béla Juhász
Alzheimer's disease (AD) is a neurodegenerative disorder with cognitive impairment. Physical exercise has long been proven to be beneficial in the disorder. The present study was designed to examine the effect of voluntary exercise on spatial memory, imaging, and pathological abnormalities. Particular focus has been given to the role of heme oxygenase-1 (HO-1)-an important cellular cytoprotectant in preserving mental acuity-using an aging rat model of dementia. Male and female Wistar rats were segregated into six groups-namely, (i) aged sedentary (control) females (ASF, n = 8); (ii) aged sedentary (control) males (ASM, n = 8); (iii) aged running females (ARF, n = 8); (iv) aged running males (ARM, n = 8); (v) young control females (YCF, n = 8); and (vi) young control males (YCM, n = 8)...
2018: BioMed Research International
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