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https://www.readbyqxmd.com/read/28644409/quercetin-protects-obesity-induced-hypothalamic-inflammation-by-reducing-microglia-mediated-inflammatory-responses-via-ho-1-induction
#1
Jihyeon Yang, Chu-Sook Kim, Thai Hien Tu, Min-Seon Kim, Tsuyoshi Goto, Teruo Kawada, Myung-Sook Choi, Taesun Park, Mi-Kyung Sung, Jong Won Yun, Suck-Young Choe, Jee Hye Lee, Yeonsoo Joe, Hye-Seon Choi, Sung Hoon Back, Hun Taeg Chung, Rina Yu
Obesity-induced hypothalamic inflammation is characterized by activation of microglia, which are resident macrophages of the central nervous system, and is implicated in the derangement of energy homeostasis, metabolic complications, and neurodegenerative diseases. Quercetin, a naturally occurring flavonoid, is known to protect against oxidative stress and inflammation-related metabolic complications. Here, we demonstrate that quercetin reduces obesity-induced hypothalamic inflammation by inhibiting microglia-mediated inflammatory responses, and the beneficial action of quercetin is associated with heme oxygenase (HO-1) induction...
June 23, 2017: Nutrients
https://www.readbyqxmd.com/read/28637872/hydrogen-sulfide-modulates-eukaryotic-translation-initiation-factor-2%C3%AE-eif2%C3%AE-phosphorylation-status-in-the-integrated-stress-response-pathway
#2
Vinita Yadav, Xing-Huang Gao, Belinda Willard, Maria Hatzoglou, Ruma Banerjee, Omer Kabil
Hydrogen sulfide (H2S) regulates various physiological processes including neuronal activity, vascular tone, inflammation, and energy metabolism. Moreover, H2S elicits cytoprotective effects against stressors in various cellular models of injury. However, the mechanism of the signaling pathways mediating the cytoprotective functions of H2S is not well understood. We previously uncovered a heme-dependent metabolic switch for transient induction of H2S production in the transsulfuration pathway. Here, we demonstrate that increased endogenous H2S production or its exogenous administration modulates major components of the integrated stress response (ISR) promoting a metabolic state primed for stress response...
June 21, 2017: Journal of Biological Chemistry
https://www.readbyqxmd.com/read/28624452/fortunellin-protects-against-high-fructose-induced-diabetic-heart-injury-in-mice-by-suppressing-inflammation-and-oxidative-stress-via-ampk-nrf-2-pathway-regulation
#3
Cuihua Zhao, Yuan Zhang, Hongyang Liu, Peng Li, Han Zhang, Guanchang Cheng
Inflammation and oxidative stress contribute to the progression of diabetic cardiomyopathy (DCM). The study was first designed to calculate the role of an anti-inflammatory and anti-oxidant Fortunellin (For) in high fructose-induced cardiac injury in diabetic mice. Fortunellin was found to be none of toxicity to mice and cells using various assays. High fructose was used to induce mice with diabetes. The heart histopathological changes and cardiac function were measured. Fortunellin significantly attenuated the score of histopathological alterations and alleviated heart function, accompanied with reduced inflammation and oxidative stress...
June 14, 2017: Biochemical and Biophysical Research Communications
https://www.readbyqxmd.com/read/28624062/diosmetin-protects-against-ischemia-reperfusion-induced-acute-kidney-injury-in-mice
#4
Kang Yang, Wei-Fang Li, Jun-Feng Yu, Cheng Yi, Wei-Feng Huang
BACKGROUND: Renal ischemia/reperfusion (I/R)-induced acute kidney injury remains to be a troublesome condition in clinical practice. Although the exact molecular mechanisms underlying renal I/R injury are incompletely understood, the deleterious progress of renal I/R injury involves inflammation, apoptosis, and oxidative stress. Diosmetin is a member of the flavonoid glycosides family, which suppresses the inflammatory response and cellular apoptosis and enhances antioxidant activity...
June 15, 2017: Journal of Surgical Research
https://www.readbyqxmd.com/read/28619710/heme-oxygenase-1-production-by-intestinal-cx3cr1-macrophages-helps-to-resolve-inflammation-and-prevents-carcinogenesis
#5
Giulia Marelli, Marco Erreni, Achille Anselmo, Valentina Taverniti, Simone Guglielmetti, Alberto Mantovani, Paola Allavena
CX3CR1(+) macrophages in the intestinal lamina propria contribute to gut homeostasis through the immunomodulatory interleukin IL-10, but there is little knowledge on how these cells or the CX3CR1 receptor may affect colorectal carcinogenesis. In this study, we show that CX3CR1-deficient mice fail to resolve gut inflammation despite high production of IL-10 and have increased colitis and adenomatous polyps in chemical and genetic models of colon carcinogenesis. Mechanistically, CX3CL1-mediated engagement of the CX3CR1 receptor induced upregulation of hemoxygenase-1 (HMOX-1), an antioxidant and anti-inflammatory enzyme...
June 15, 2017: Cancer Research
https://www.readbyqxmd.com/read/28619112/docosahexaenoic-acid-regulates-vascular-endothelial-cell-function-and-prevents-cardiovascular-disease
#6
REVIEW
Kazuo Yamagata
Docosahexaenoic acid (DHA) is present in high concentrations in salmon, herring, and trout. Epidemiologic studies have shown that high dietary consumption of these and other oily fish is associated with reduced rates of myocardial infarction, atherosclerosis, and other ischemic pathologies. Atherosclerosis is induced by inflammation and can lead to acute cardiovascular events and extensive plaque. DHA inhibits the development of inflammation in endothelial cells, alters the function and regulation of vascular biomarkers, and reduces cardiovascular risk...
June 15, 2017: Lipids in Health and Disease
https://www.readbyqxmd.com/read/28618762/antiinflammatory-and-antioxidant-effects-of-gemcitabine-in-collagen-induced-arthritis-model
#7
Adile Ferda Dağli, Ahmet Karataş, Cemal Orhan, Mehmet Tuzcu, Metin Özgen, Kazım Şahin, Süleyman Serdar Koca
BACKGROUND/AIM: Gemcitabine (GEM) has antiproliferative effects on lymphocytes, which are potent pathogenic actors of rheumatoid arthritis (RA). The aim of the study was to investigate the therapeutic potential of GEM on collagen-induced arthritis (CIA). MATERIALS AND METHODS: Arthritis was induced by the intradermal injection of chicken type II collagen with incomplete Freund's adjuvant into albino Wistar rats. Doses of 5 and 20 mg/kg GEM were administered twice a week after the 14th day, which marked the onset the arthritis...
June 12, 2017: Turkish Journal of Medical Sciences
https://www.readbyqxmd.com/read/28604414/dietary-iron-and-heme-iron-consumption-genetic-susceptibility-and-risk-of-crohn-s-disease-and-ulcerative-colitis
#8
Hamed Khalili, Punyanganie S de Silva, Ashwin N Ananthakrishnan, Paul Lochhead, Amit Joshi, John J Garber, James R Richter, Jenny Sauk, Andrew T Chan
BACKGROUND: Dietary iron and heme, likely through their effect on gut commensal bacteria and colonic barrier function, have been shown to modulate colonic inflammation in animal models of colitis. Nonetheless, the link between dietary total and heme iron and risk of Crohn's disease (CD) and ulcerative colitis (UC) has not been previously explored. METHODS: We conducted a prospective cohort study of 165,331 U.S. women enrolled in the Nurses' Health Study and Nurses' Health Study II...
July 2017: Inflammatory Bowel Diseases
https://www.readbyqxmd.com/read/28596808/saturated-hydrogen-saline-ameliorates-lipopolysaccharide-induced-acute-lung-injury-by-reducing-excessive-autophagy
#9
Yiming Liu, Jin Zhang
The pathogenesis of acute lung injury (ALI) induced by lipopolysaccharide (LPS) involves excessive pulmonary inflammation and oxidative stress. In turn, autophagy is associated with inflammatory diseases and organ dysfunction, and studies have demonstrated that LPS treatment may trigger autophagy. Thus, excessive autophagy may stimulate the strong inflammatory response observed in the development of LPS-induced ALI. Saturated hydrogen saline may alleviate LPS-induced ALI by inhibiting autophagy, however its underlying mechanisms of action remain unknown...
June 2017: Experimental and Therapeutic Medicine
https://www.readbyqxmd.com/read/28596380/identification-of-oxidative-modifications-of-hemopexin-and-their-predicted-physiological-relevance
#10
Peter Hahl, Rachel Hunt, Edward S Bjes, Andrew Skaff, J Andrew Keightley, Ann Smith
Hemopexin protects against heme toxicity in hemolytic diseases and conditions, sepsis and sickle cell disease. This protection is sustained by heme-hemopexin complexes present in biological fluids that resist oxidative damage during heme-driven inflammation. However, apo-hemopexin is vulnerable to inactivation by reactive nitrogen and oxygen species that covalently modify amino acids. The consequent nitration of amino acids is considered a selective and specific effect reflecting biological events. Using liquid chromatography-tandem mass spectrometry, we discovered low endogenous levels of tyrosine nitration in the peptide YYCFQGNQFLR of human hemopexin, which was similarly nitrated in rabbit and rat hemopexins...
June 8, 2017: Journal of Biological Chemistry
https://www.readbyqxmd.com/read/28580587/heme-oxygenase-1-directly-binds-stat3-to-control-the-generation-of-pathogenic-th17-cells-during-neutrophilic-airway-inflammation
#11
Xiaoliang Lin, Jiajia Lv, Jie Lv, Caixia Di, Yanjie Zhang, Tong Zhou, Junling Liu, Zhenwei Xia
BACKGROUND: Specific JAK/STAT pathways play a critical role in the functional differentiation of distinct Th subsets. Previously, we showed that HO-1, a stress-inducible protein, inhibits Th17 cell differentiation and alleviates neutrophilic airway inflammation, but the responsible molecular basis remains unclear. METHODS: We employed Th17-skewing differentiation and NEA mouse models to study the role of HO-1 regulating IL-6-STAT3-RORγt/SOCS3 signaling pathway to control Th17 cell-mediated neutrophilic airway inflammation...
June 5, 2017: Allergy
https://www.readbyqxmd.com/read/28566367/heme-oxygenase-1-modulates-human-respiratory-syncytial-virus-replication-and-lung-pathogenesis-during-infection
#12
Janyra A Espinoza, Miguel A León, Pablo F Céspedes, Roberto S Gómez, Gisela Canedo-Marroquín, Sebastían A Riquelme, Francisco J Salazar-Echegarai, Phillipe Blancou, Thomas Simon, Ignacio Anegon, Margarita K Lay, Pablo A González, Claudia A Riedel, Susan M Bueno, Alexis M Kalergis
Human respiratory syncytial virus (hRSV) is the leading cause of severe lower respiratory tract infections in children. The development of novel prophylactic and therapeutic antiviral drugs against hRSV is imperative to control the burden of disease in the susceptible population. In this study, we examined the effects of inducing the activity of the host enzyme heme oxygenase-1 (HO-1) on hRSV replication and pathogenesis on lung inflammation induced by this virus. Our results show that after hRSV infection, HO-1 induction with metalloporphyrin cobalt protoporphyrin IX significantly reduces the loss of body weight due to hRSV-induced disease...
May 31, 2017: Journal of Immunology: Official Journal of the American Association of Immunologists
https://www.readbyqxmd.com/read/28560522/2-hydroxy-4-methoxy-benzoic-acid-attenuates-the-carbon-tetra-chloride-induced-hepatotoxicity-and-its-lipid-abnormalities-in-rats-via-anti-inflammatory-and-antioxidant-mechanism
#13
Ghedeir M Alshammari, Aristatile Balakrishnan, Thirunavukkarasu Chinnasamy
BACKGROUND AND AIM: Liver inflammation stimulates various inflammatory cytokines and initiates injury through oxidative stress. The aim of this study was to curtaile the liver injury through natural principles such as 2-hydroxy-4-methoxy benzoic acid (HMBA). METHODS: The current study examines the hepatoprotective and lipid lowering effect of HMBA against carbon tetra chloride (CCl4)-mediated liver toxicity in male Wistar rats. RESULTS: The hepatoprotective effects of HMBA against CCl4-induced liver damage, were evident from low serum transaminases activities, reduced hepatic lipid peroxidation and collagen content, restoration of total glutathione, and recouping of the inflammatory cytokines, such as TNF-α, IL-1β, IL-10, and IL-6 levels...
May 30, 2017: Inflammation Research: Official Journal of the European Histamine Research Society ... [et Al.]
https://www.readbyqxmd.com/read/28560284/data-demonstrating-the-anti-oxidant-role-of-hemopexin-in-the-heart
#14
Giada Ingoglia, Can Martin Sag, Nikolai Rex, Lucia De Franceschi, Francesca Vinchi, James Cimino, Sara Petrillo, Stefan Wagner, Klaus Kreitmeier, Lorenzo Silengo, Fiorella Altruda, Lars S Maier, Emilio Hirsch, Alessandra Ghigo, Emanuela Tolosano
The data presented in this article are related to the research article entitled Hemopexin counteracts systolic dysfunction induced by heme-driven oxidative stress (G. Ingoglia, C. M. Sag, N. Rex, L. De Franceschi, F. Vinchi, J. Cimino, S. Petrillo, S. Wagner, K. Kreitmeier, L. Silengo, F. Altruda, L. S. Maier, E. Hirsch, A. Ghigo and E. Tolosano, 2017) [1]. Data show that heme induces reactive oxygen species (ROS) production in primary cardiomyocytes. H9c2 myoblastic cells treated with heme bound to human Hemopexin (Hx) are protected from heme accumulation and oxidative stress...
August 2017: Data in Brief
https://www.readbyqxmd.com/read/28558148/glucosamine-has-an-antiallergic-effect-in-mice-with-allergic-asthma-and-rhinitis
#15
Ah-Yeoun Jung, Min-Jeong Heo, Young Hyo Kim
BACKGROUND: Glucosamine (GlcN) is generally used as a dietary supplement because of its antiinflammatory effects. We evaluated the antiallergic effect of GlcN in mice with allergic asthma and rhinitis. METHODS: Thirty-two mice were allocated equally into 4 groups (n = 8). In group A (control), we performed intraperitoneal/intranasal challenge using sterile saline. In group B (asthma/rhinitis), we used ovalbumin for intraperitoneal/intranasal challenge to induce allergic asthma and rhinitis...
May 30, 2017: International Forum of Allergy & Rhinology
https://www.readbyqxmd.com/read/28555929/pm2-5-induced-lung-inflammation-in-mice-differences-of-inflammatory-response-in-macrophages-and-type-ii-alveolar-cells
#16
Miao He, Takamichi Ichinose, Seiichi Yoshida, Tomohiro Ito, Cuiying He, Yasuhiro Yoshida, Keiichi Arashidani, Hirohisa Takano, Guifan Sun, Takayuki Shibamoto
Particulate matter 2.5 (<PM2.5 μm) leads to chronic obstructive pulmonary disease. In this study, biomarkers related to inflammation and oxidative stress in vitro and in vivo experiments were investigated to clarify the PM2.5-induced lung inflammation mechanisms. In an in vitro study using RAW264.7 cells, PM2.5 caused phosphorylation of nuclear factor-κB, p38 mitogen-activated protein kinase and extracellular response kinases, an increase of proinflammatory gene and protein expressions (e.g. monocyte chemotactic protein-1, tumor necrosis factor-α)...
May 29, 2017: Journal of Applied Toxicology: JAT
https://www.readbyqxmd.com/read/28555162/red-yeast-rice-protects-circulating-bone-marrow-derived-proangiogenic-cells-against-high-glucose-induced-senescence-and-oxidative-stress-the-role-of-heme-oxygenase-1
#17
Jung-Tung Liu, Huey-Yi Chen, Wen-Chi Chen, Kee-Ming Man, Yung-Hsiang Chen
The inflammation and oxidative stress of bone marrow-derived proangiogenic cells (PACs), also named endothelial progenitor cells, triggered by hyperglycemia contributes significantly to vascular dysfunction. There is supporting evidence that the consumption of red yeast rice (RYR; Monascus purpureus-fermented rice) reduces the vascular complications of diabetes; however, the underlying mechanism remains unclear. This study aimed to elucidate the effects of RYR extract in PACs, focusing particularly on the role of a potent antioxidative enzyme, heme oxygenase-1 (HO-1)...
2017: Oxidative Medicine and Cellular Longevity
https://www.readbyqxmd.com/read/28551192/differences-in-liver-functionality-indexes-in-peripartal-dairy-cows-fed-rumen-protected-methionine-or-choline-are-associated-with-performance-oxidative-stress-status-and-plasma-amino-acid-profiles
#18
Z Zhou, E Trevisi, D N Luchini, J J Loor
The liver functionality index (LFI) represents an assessment of transition cow metabolic health by measuring changes in biomarkers associated with liver plasma protein synthesis (albumin), lipoprotein synthesis (cholesterol), and heme catabolism (bilirubin). The present analysis was conducted to determine the role of peripartal rumen-protected Met or choline (CHOL) supplementation on LFI groupings, and to assess relationships with performance, inflammation, oxidative stress status, and plasma AA profiles. A cohort of 40 multiparous Holstein cows that were part of a randomized complete block design with 2 × 2 factorial arrangement of Met (Smartamine M, Adisseo NA, Alpharetta, GA) and CHOL (ReaShure, Balchem Inc...
May 24, 2017: Journal of Dairy Science
https://www.readbyqxmd.com/read/28545777/inhibitory-effects-of-doxycycline-on-the-onset-and-progression-of-abdominal-aortic-aneurysm-and-its-related-mechanisms
#19
Maomao Yu, Cong Chen, Yini Cao, Rong Qi
The objective of this study was to investigate whether doxycycline (DOX) given at different doses and via different administration routes had protective or therapeutic effects on abdominal aortic aneurysm (AAA) induced by elastase in mice. Moreover, the anti-AAA mechanism of DOX was studied in TNF-α-stimulated vascular smooth muscle cell (VSMC) in vitro. For in vivo study, either daily administration of 30mg/kg of DOX by gavage or intraperitoneal injection of 15mg/kg DOX every other day for 14 days significantly prevented the development of AAA at its early stage...
May 22, 2017: European Journal of Pharmacology
https://www.readbyqxmd.com/read/28543773/degradation-of-heme-oxygenase-1-by-the-immunoproteasome-in-astrocytes-a-potential-interferon-%C3%AE-dependent-mechanism-contributing-to-hiv-neuropathogenesis
#20
Colleen E Kovacsics, Alexander J Gill, Surendra S Ambegaokar, Benjamin B Gelman, Dennis L Kolson
Induction of the detoxifying enzyme heme oxygenase-1 (HO-1) is a critical protective host response to cellular injury associated with inflammation and oxidative stress. We previously found that HO-1 protein expression is reduced in brains of HIV-infected individuals with HIV-associated neurocognitive disorders (HAND) and in HIV-infected macrophages, where this reduction associates with enhanced glutamate release and neurotoxicity. Because HIV-infected macrophages are a small component of the cellular content of the brain, the reduction of macrophage HO-1 expression likely accounts for a small portion of brain HO-1 loss in HIV infection...
August 2017: Glia
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