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https://www.readbyqxmd.com/read/28885495/isoglycyrrhizinate-magnesium-enhances-hepatoprotective-effect-of-fk506-on-ischemia-reperfusion-injury-through-hmgb1-inhibition-in-a-rat-model-of-liver-transplantation
#1
Zhang Weichen, Li Feibo, Ye Yufu, Liu Yuanxing, Yu Songfeng, Cen Chao, Chen Xuliang, Zhou Lin, Tang Xiaofeng, Yu Jun, Zheng Shusen
BACKGROUND: Ischemia-reperfusion injury (IRI) after liver transplantation impairs graft function and affects prognosis of recipients. Isoglycyrrhizinate magnesium (Iso) is a hepatoprotective drug usually used after liver injury. In this study, we intended to explore whether Iso alone have protective effect after IRI in a rat model of liver transplantataion. We also aimed to study whether Iso could enhance the hepatoprotective effect of FK506 (tacrolimus) and underlying mechanism. METHODS: Rats after liver transplantation were treated with different concentration of FK506 with or without, Iso or lower-dose FK506 plus Iso...
September 6, 2017: Transplantation
https://www.readbyqxmd.com/read/28885322/is-serum-high-mobility-group-box-1-hmgb-1-level-correlated-with-liver-fibrosis-in-chronic-hepatitis-b
#2
Ahmet Cagkan Inkaya, Nazlim Aktug Demir, Servet Kolgelier, Sua Sumer, Lutfi Saltuk Demir, Onur Ural, Fatma Seher Pehlivan, Mahmure Aslan, Abdullah Arpaci
BACKGROUND: High-mobility group box 1 (HMGB1), identified as an alarmin molecule, was shown to have a role in virus-triggered liver injury. We aimed to evaluate the association between serum levels of HMGB1 and liver fibrosis. METHOD: This cross-sectional case-control study included 189 chronic hepatitis B (CHB) patients and 51 healthy controls. All patients underwent liver biopsy and modified Knodell scoring system used to determine the fibrosis level in CHB patients...
September 2017: Medicine (Baltimore)
https://www.readbyqxmd.com/read/28876118/-effects-of-complement-c5a-inhibitor-therapy-in-animal-models-of-non-occlusive-mesenteric-ischemia
#3
Miklós Nógrády, Gabriella Varga, Szilárd Szűcs, József Kaszaki, Mihály Boros, Dániel Érces
INTRODUCTION: Non-occlusive mesenteric ischemia (NOMI) develops without anatomical causes. Early diagnosis is challenging and treatments are of questionable effectiveness. We investigated the role of complement activation in the pathophysiology of NOMI in animal models through the inhibition of complement C5a. MATERIALS AND METHODS: 60-min partial aortic occlusion (PAO; abdominal aorta, proximal to celiac trunk; mean arterial pressure: 30-40 mmHg) was established in Sprague-Dawley rats (n = 28) and 60-min cardiac tamponade in minipigs (n = 19; mean arterial pressure: 40-50 mmHg) to observe short- and long-term circulatory and inflammatory consequences of NOMI...
September 2017: Magyar Sebészet
https://www.readbyqxmd.com/read/28843664/circulating-syndecan-1-predicts-the-development-of-disseminated-intravascular-coagulation-in-patients-with-sepsis
#4
Mitsunori Ikeda, Hisatake Matsumoto, Hiroshi Ogura, Tomoya Hirose, Kentaro Shimizu, Kouji Yamamoto, Ikuro Maruyama, Takeshi Shimazu
PURPOSE: One of the pathophysiological processes in sepsis is endothelial dysfunction, which leads to disseminated intravascular coagulation (DIC). Syndecan-1 is a major structural component of the endothelium and plays a key role in endothelial function. The purpose of this study was to assess the value of syndecan-1 as a predictive marker for DIC in sepsis. METHODS: We performed a prospective observational study of patients with sepsis from February 2014 to July 2015...
July 28, 2017: Journal of Critical Care
https://www.readbyqxmd.com/read/28821136/discovery-of-enzymatically-depolymerized-heparins-capable-of-treating-bleomycin-induced-pulmonary-injury-and-fibrosis-in-mice
#5
Yishu Yan, Shanshan Du, Yang Ji, Nan Su, Yi Wang, Xiang Mei, Wenming Zhu, Dong He, Yuan Lu, Chong Zhang, Xin-Hui Xing
Heparin has recently been shown to slow down idiopathic pulmonary fibrosis (IPF) process and improve survival of patients in some cases. To improve the anti-IPF function while minimizing their side effects, we developed heparin libraries with different structures depolymerized by single or combined heparinases, and systematically screened the efficacy of the different heparins for treatment of Bleomycin-induced pulmonary injury and fibrosis using mice model. Then we characterized the structural properties of the components capable of treating pulmonary injury and fibrosis by use of chip-based amide hydrophilic interaction chromatography (HILIC)-fourier transform (FT)-ESI-MS, polyacrylamide gel electrophoresis (PAGE), and high performance liquid chromatography (HPLC)...
October 15, 2017: Carbohydrate Polymers
https://www.readbyqxmd.com/read/28804542/significant-association-of-trem-1-with-hmgb1-tlrs-and-rage-in-the-pathogenesis-of-insulin-resistance-in-obese-diabetic-populations
#6
Saravanan Subramanian, Pradeep K Pallati, Poonam Sharma, Devendra K Agrawal, Kalyana C Nandipati
Activated cell surface and intracellular receptors lead to insulin resistance in obesity. Among these receptors, triggering receptors expressed on myeloid cells (TREM)-1, toll like receptors (TLRs), and receptors for advanced glycation end products (RAGE) play a significant role in the induction of inflammatory response in innate immunity. TREM-1 potentially amplifies TLRs and RAGE synergistically with DNA-binding high-mobility group box 1 (HMGB-1). The objective of the study was to analyze the association between TREM-1/DAP12 and HMGB-1, RAGE and TLRs in obesity-induced insulin resistance...
2017: American Journal of Translational Research
https://www.readbyqxmd.com/read/28789654/serum-high-mobility-group-box-1-and-osteoprotegerin-levels-are-associated-with-peripheral-arterial-disease-and-critical-limb-ischemia-in-type-2-diabetic-subjects
#7
Silvia Giovannini, Giovanni Tinelli, Federico Biscetti, Giuseppe Straface, Flavia Angelini, Dario Pitocco, Luciana Mucci, Raffaele Landolfi, Andrea Flex
BACKGROUND: High mobility group box-1 (HMGB-1) is a nuclear protein also acting as inflammatory mediator, whilst osteoprotegerin (OPG), member of tumor necrosis factor receptor superfamily, is indicated as marker of vascular calcification. Peripheral artery disease (PAD) and type 2 diabetes (T2D) are clinical conditions characterized by elevated serum inflammatory markers and vascular calcification enhancement. The aim of this study was to investigate the potential role of HMGB-1, OPG and several inflammatory mediators such as C-reactive protein (HsCRP), tumor necrosis factor-alpha and interleukin-6 (IL-6) on the presence and severity of peripheral artery disease in patients with T2D...
August 8, 2017: Cardiovascular Diabetology
https://www.readbyqxmd.com/read/28771195/scar-prevention-and-enhanced-wound-healing-induced-by-polydeoxyribonucleotide-in-a-rat-incisional-wound-healing-model
#8
Woonhyeok Jeong, Chae Eun Yang, Tai Suk Roh, Jun Hyung Kim, Ju Hee Lee, Won Jai Lee
High-mobility group box protein-1 (HMGB-1) plays a central role in the inflammatory network, and uncontrolled chronic inflammation can lead to excessive scarring. The aim of this study was to evaluate the anti-inflammatory effects of polydeoxyribonucleotide (PDRN) on scar formation. Sprague-Dawley rats (n = 30) underwent dorsal excision of the skin, followed by skin repair. PDRN (8 mg/kg) was administered via intraperitoneal injection for three (PDRN-3 group, n = 8) or seven (PDRN-7 group, n = 8) days, and HMGB-1 was administered via intradermal injection in addition to PDRN treatment for three days (PDRN-3+HMGB-1 group; n = 6)...
August 3, 2017: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/28741799/multicenter-study-for-brain-body-hypothermia-for-hie-investigation-of-changes-in-hmgb-1
#9
Toshihiko Nakamura, Hideomi Asanuma, Satoshi Kusuda, Ken Imai, Shigeharu Hosono, Ryota Kato, Satoshi Suzuki, Kyoko Yokoi, Minoru Kokubo, Shingo Yamada, Takashi Kamohara
BACKGROUND: We measured changes in the blood levels of high mobility group box-1 (HMGB-1) at 24-hour intervals in neonates treated with brain/body hypothermia (BHT) for hypoxic ischemic encephalopathy (HIE), to evaluate the usefulness of HMGB-1 levels for determining outcomes. METHODS: We studied 15 neonates with HIE who underwent BHT (BHT (+) group) and 6 neonates with HIE who did not (BHT (-) group). We recorded HMGB-1 changes at 24-hour intervals, creatinine phosphokinase (CK), and the resistance index of the anterior cerebral artery (ACA-RI)...
July 25, 2017: Pediatrics International: Official Journal of the Japan Pediatric Society
https://www.readbyqxmd.com/read/28694659/induction-of-chronic-cholestasis-without-liver-cirrhosis-creation-of-an-animal-model
#10
Felix Dondorf, René Fahrner, Michael Ardelt, Eleonora Patsenker, Felix Stickel, Uta Dahmen, Utz Settmacher, Falk Rauchfuß
AIM: To analyze time intervals of inflammation and regeneration in a cholestatic rat liver model. METHODS: In 36 Lewis rats, divided into six groups of 6 animals (postoperative observation periods: 1, 2, 3, 4, 6, 8 wk), the main bile duct was ligated with two ligatures and observed for the periods mentioned above. For laboratory evaluation, cholestasis parameters (bilirubin, γ-GT), liver cell parameters (ASAT, ALAT) and liver synthesis parameters (quick, albumin) were determined...
June 21, 2017: World Journal of Gastroenterology: WJG
https://www.readbyqxmd.com/read/28689646/higher-m30-and-high-mobility-group-box-1-protein-levels-in-ex-vivo-lung-perfusate-are-associated-with-primary-graft-dysfunction-after-human-lung-transplantation
#11
Kohei Hashimoto, Marcelo Cypel, Stephen Juvet, Tomohito Saito, Ricardo Zamel, Tiago N Machuca, Michael Hsin, Hyunhee Kim, Thomas K Waddell, Mingyao Liu, Shaf Keshavjee
BACKGROUND: Ex vivo lung perfusion (EVLP) enables assessment of marginal donor lungs for transplantation, with similar clinical outcomes to conventional lung transplantation. We investigated whether cell death-related proteins in the EVLP perfusate could predict primary graft dysfunction (PGD) after transplantation. METHODS: M30 (indicating epithelial apoptosis), M65 (indicating total epithelial cell death), and high mobility group box 1 (HMGB-1, related to cell death and inflammation) protein levels in EVLP perfusate were measured by enzyme-linked immunosorbent assay and correlated with clinical outcomes...
June 21, 2017: Journal of Heart and Lung Transplantation
https://www.readbyqxmd.com/read/28677786/circulating-level-of-high-mobility-group-box%C3%A2-1-predicts-the-severity-of-community%C3%A2-acquired-pneumonia-regulation-of-inflammatory-responses-via-the-c%C3%A2-jun-n%C3%A2-terminal-signaling-pathway-in-macrophages
#12
Hsiang-Ling Wang, Shih-Ming Tsao, Chao-Bin Yeh, Ying-Erh Chou, Shun-Fa Yang
High mobility group box‑1 (HMGB‑1) has been reported to serve significant roles in various inflammatory diseases. However, the correlation between the circulating level of HMGB‑1 and severity of community‑acquired pneumonia (CAP) remains unclear. The present study investigated differential alterations in plasma HMGB‑1 levels of patients with CAP prior to and following antibiotic treatment, and further analyzed the association between CAP severity and HMGB‑1 levels. Furthermore, lipopolysaccharide (LPS)‑induced HMGB‑1 expression in RAW264...
September 2017: Molecular Medicine Reports
https://www.readbyqxmd.com/read/28647749/expression-of-high-mobility-group-box-1-protein-hmgb1-and-toll-like-receptor-9-tlr9-in-retinas-of-diabetic-rats
#13
Shuang Jiang, Xiaolong Chen
BACKGROUND Diabetic retinopathy (DR) and diabetic optic neuropathy are important complications of diabetes mellitus (DM) which can lead to blindness in diabetic patients. Recent studies showed that chronic low-grade inflammation is thought to be one of the important pathophysiological mechanisms in the occurrence and development of DR and diabetes optic neuropathy. This study explored the expressions of inflammatory factors HMGB-1 and TLR9. MATERIAL AND METHODS SD rats were randomly divided into a diabetic mellitus group and a control group...
June 25, 2017: Medical Science Monitor: International Medical Journal of Experimental and Clinical Research
https://www.readbyqxmd.com/read/28630596/association-between-hmgb1-and-asthma-a-literature-review
#14
REVIEW
Egidio Imbalzano, Sebastiano Quartuccio, Eleonora Di Salvo, Teresa Crea, Marco Casciaro, Sebastiano Gangemi
BACKGROUND: Recently, some studies demonstrated that HMGB1, as proinflammatory mediator belonging to the alarmin family, has a key role in different acute and chronic immune disorders. Asthma is a complex disease characterised by recurrent and reversible airflow obstruction associated to airway hyper-responsiveness and airway inflammation. OBJECTIVE: This literature review aims to analyse advances on HMGB1 role, employment and potential diagnostic application in asthma...
2017: Clinical and Molecular Allergy: CMA
https://www.readbyqxmd.com/read/28624051/persistent-injury-associated-anemia-the-role-of-the-bone-marrow-microenvironment
#15
Jessica K Millar, Kolenkode B Kannan, Tyler J Loftus, Ines G Alamo, Jessica Plazas, Philip A Efron, Alicia M Mohr
BACKGROUND: The regulation of erythropoiesis involves hematopoietic progenitor cells, bone marrow stroma, and the microenvironment. Following severe injury, a hypercatecholamine state develops that is associated with increased mobilization of hematopoietic progenitor cells to peripheral blood and decreased growth of bone marrow erythroid progenitor cells that manifests clinically as a persistent injury-associated anemia. Changes within the bone marrow microenvironment influence the development of erythroid progenitor cells...
June 15, 2017: Journal of Surgical Research
https://www.readbyqxmd.com/read/28610842/fumigaclavine-c-exhibits-anti-inflammatory-effects-by-suppressing-high-mobility-group-box-protein-1-relocation-and-release
#16
Wanguo Yu, Zhenghua Pan, Yixiang Zhu, Faliang An, Yanhua Lu
A previous study demonstrated that Fumigaclavine C (FC) had a potential immunosuppressive activity against concanavalin A-induced hepatitis in mice. However, the precise mechanisms of the anti-inflammatory and hepatoprotective effects of FC are incompletely delineated. This study further investigated the protective effects of FC on lipopolysaccharide (LPS)-induced murine RAW264.7 cells and the underlying molecular mechanism in liver kupffer cells. FC differentially attenuated the production of tumor necrosis factor alpha (TNF-α), interleukin-1 beta (IL-1β), interleukin-6 (IL-6), interferon gamma (IFN-γ), and high mobility group box protein 1 (HMGB-1)...
June 10, 2017: European Journal of Pharmacology
https://www.readbyqxmd.com/read/28584432/the-effect-of-high-dose-parenteral-sodium-selenite-in-critically-ill-patients-following-sepsis-a-clinical-and-mechanistic-study
#17
Legese Chelkeba, Arezoo Ahmadi, Mohammad Abdollahi, Atabak Najafi, Mohammad Hosein Ghadimi, Reza Mosaed, Mojtaba Mojtahedzadeh
INTRODUCTION: Severe sepsis and septic shock is characterized by inflammation and oxidative stress. Selenium levels have been reported to be low due to loss or increased requirements during severe sepsis and septic shock. We investigated the effect of high-dose parenteral selenium administration in septic patients. METHODS: A prospective, randomized control clinical trial was performed in septic patients. After randomization, patients in selenium group received high-dose parenteral sodium selenite (2 mg intravenous [IV] bolus followed by 1...
May 2017: Indian Journal of Critical Care Medicine
https://www.readbyqxmd.com/read/28550659/hyperoxia-provokes-a-time-and-dose-dependent-inflammatory-response-in-mechanically-ventilated-mice-irrespective-of-tidal-volumes
#18
Hendrik J F Helmerhorst, Laura R A Schouten, Gerry T M Wagenaar, Nicole P Juffermans, Joris J T H Roelofs, Marcus J Schultz, Evert de Jonge, David J van Westerloo
BACKGROUND: Mechanical ventilation and hyperoxia have the potential to independently promote lung injury and inflammation. Our purpose was to study both time- and dose-dependent effects of supplemental oxygen in an experimental model of mechanically ventilated mice. METHODS: Healthy male C57Bl/6J mice, aged 9-10 weeks, were intraperitoneally anesthetized and randomly assigned to the mechanically ventilated group or the control group. In total, 100 mice were tracheotomized and mechanically ventilated for either 8 or 12 h after allocation to different settings for the applied fractions of inspired oxygen (FiO2, 30, 50, or 90%) and tidal volumes (7...
December 2017: Intensive Care Medicine Experimental
https://www.readbyqxmd.com/read/28549396/molecular-mechanisms-underlying-the-protective-effects-of-hydrogen-saturated-saline-on-noise-induced-hearing-loss
#19
Liwei Chen, Mingkun Han, Yan Lu, Daishi Chen, Xuejun Sun, Shiming Yang, Wei Sun, Ning Yu, Suoqiang Zhai
OBJECTIVES: This study aimed to explore the molecular mechanism of the protective effects of hydrogen-saturated saline on NIHL. METHODS: Guinea pigs were divided into three groups: hydrogen-saturated saline; normal saline; and control. For saline administration, the guinea pigs were given daily abdominal injections 3 d before and 1 h before noise exposure. ABR were tested to examine cochlear physiology changes. The changes of 8-hydroxy-desoxyguanosine (8-HOdG), interleukin-1 (IL-1), interleukin-6 (IL-6), interleukin-10 (IL-10), tumor necrosis factor-α (TNF-α), intercellular cell adhesion molecule-1 (ICAM-1) and high mobility group box-1 protein (HMGB1) in the cochlea were also examined...
October 2017: Acta Oto-laryngologica
https://www.readbyqxmd.com/read/28547529/toll-like-receptor-4-tlr4-and-triggering-receptor-expressed-on-myeloid-cells-2-trem-2-activation-balance-astrocyte-polarization-into-a-proinflammatory-phenotype
#20
Gerardo Rosciszewski, Vanesa Cadena, Veronica Murta, Jeronimo Lukin, Alejandro Villarreal, Thierry Roger, Alberto Javier Ramos
Astrocytes react to brain injury with a generic response known as reactive gliosis, which involves activation of multiple intracellular pathways including several that may be beneficial for neuronal survival. However, by unknown mechanisms, reactive astrocytes can polarize into a proinflammatory phenotype that induces neurodegeneration. In order to study reactive gliosis and astroglial polarization into a proinflammatory phenotype, we used cortical devascularization-induced brain ischemia in Wistar rats and primary astroglial cell cultures exposed to oxygen-glucose deprivation (OGD)...
May 25, 2017: Molecular Neurobiology
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