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high mobility group box

Jianhua Zhu, Jing Luo, Yongchao Li, Min Jia, Yueqin Wang, Yan Huang, Shuhong Ke
High mobility group box 1 (HMGB1) is a ubiquitous nuclear protein with multi-functions and plays an important role in tumorigenesis and metastasis in various human cancers. In the present study, we found that HMGB1 induced migration of in human non-small cell lung cancer (NSCLC) cells by up-regulating integrin αvβ3 expression. Further investigation evidenced that HMGB1 activated Toll-like receptor 4 (TLR4) and NF-κB, which was responsible for αvβ3 up-regulation. Furthermore, HMGB1-induced integrin αvβ3 expression led to focal adhesion kinase (FAK) phosphorylation and increased paxillin and talin mRNA expression...
October 18, 2016: Biochemical and Biophysical Research Communications
Chunfeng Lu, Wenxuan Xu, Feng Zhang, Jiangjuan Shao, Shizhong Zheng
It has emerged that hepatocyte necroptosis plays a critical role in chronic alcoholic liver disease (ALD). Our previous study has identified that the beneficial therapeutic effect of curcumin on alcohol-caused liver injury might be attributed to activation of nuclear factor (erythroid-derived 2)-like 2 (Nrf2), whereas the role of curcumin in regulating necroptosis and the underlying mechanism remain to be determined. We firstly found that chronic alcohol consumption triggered obvious hepatocyte necroptosis, leading to increased expression of receptor-interacting protein 1, receptor-interacting protein 3, high-mobility group box 1, and phosphorylated mixed lineage kinase domain-like in murine livers...
October 20, 2016: Molecular Pharmaceutics
Nabanita Das, Varun Dewan, Peter M Grace, Robin J Gunn, Ryo Tamura, Netanel Tzarum, Linda R Watkins, Ian A Wilson, Hang Yin
Infectious and sterile inflammatory diseases are correlated with increased levels of high mobility group box 1 (HMGB1) in tissues and serum. Extracellular HMGB1 is known to activate Toll-like receptors (TLRs) 2 and 4 and RAGE (receptor for advanced glycation endproducts) in inflammatory conditions. Here, we find that TLR5 is also an HMGB1 receptor that was previously overlooked due to lack of functional expression in the cell lines usually used for studying TLR signaling. HMGB1 binding to TLR5 initiates the activation of NF-κB signaling pathway in a MyD88-dependent manner, resulting in proinflammatory cytokine production and pain enhancement in vivo...
October 18, 2016: Cell Reports
Giang Huong Nguyen, James Y Wang, Kenneth B Hymes, Cynthia M Magro
Adult T-cell leukemia/lymphoma (ATLL) is a rare and often aggressive lymphoid malignancy known to be associated with human T-cell lymphotropic virus type 1. There are 2 broad categories: acute and chronic. In the acute category, there is a leukemic and a lymphomatous variant, whereas in the designated "chronic" form, there is mild peripheral blood lymphocytosis. The intermediate "smoldering" category is without peripheral blood lymphocytosis with only discernible skin involvement. We present a 68-year-old human T-cell lymphotropic virus type 1 seropositive female with a mild peripheral blood atypical lymphocytosis who had indurated nodules on her hands of 2 years duration and a new scaly ichthyosiform eruption on her lower extremities...
October 12, 2016: American Journal of Dermatopathology
Rille Pullerits, Hanna Schierbeck, Karin Uibo, Hille Liivamägi, Sirje Tarraste, Tiina Talvik, Erik Sundberg, Chris Pruunsild
OBJECTIVE: High mobility group box protein 1 (HMGB1) is an important pro-inflammatory mediator in adult rheumatoid arthritis. The diagnostic utility of HMGB1 in Juvenile Idiopathic Arthritis (JIA) is still unclear. The aim was to examine whether serum HMGB1 levels are associated with inflammation, radiological disease progression, and long-term prognosis in JIA. METHODS: We included 131 children with JIA from a population-based prevalence study; 38 of them were prospectively followed up for 10 years...
August 26, 2016: Seminars in Arthritis and Rheumatism
Francesca Palone, Roberta Vitali, Salvatore Cucchiara, Maurizio Mennini, Alessandro Armuzzi, Daniela Pugliese, Renata DʼIncà, Brigida Barberio, Laura Stronati
BACKGROUND: Fecal high mobility group box 1 (HMGB1) has been suggested to be a novel noninvasive biomarker of gut inflammation. We aimed to assess the reliability of fecal HMGB1, compared with fecal calprotectin (FC), in detecting intestinal inflammation in pediatric and adult patients with inflammatory bowel disease (IBD) and to evaluate the accuracy of HMGB1 in identifying patients with IBD in clinical and endoscopic remission who still have histologic features of inflammation. METHODS: Stool samples from 85 children with IBD (49 Crohn's disease [CD] and 36 ulcerative colitis [UC] and 119 adults [57 Crohn's disease and 62 ulcerative colitis]) were analyzed for the study...
October 13, 2016: Inflammatory Bowel Diseases
Guoliang Wang, Jingchao Zhang, Danhua Dui, Haoyuan Ren, Jin Liu
The pathogenesis of severe acute pancreatitis (SAP) remains unclear. The Janus kinase and signal transducer and activator of transcription (JAK/STAT) pathway is important for various cytokines and growth factors. This study investigated the effect of the late inflammatory factor high mobility group box 1 (HMGB1) on the activation of JAK2/STAT3 in pancreatic acinar cells and the inhibitory effects of AG490 (a JAK2 inhibitor) and rapamycin (a STAT3 inhibitor) on this pathway. Rat pancreatic acinar cells were randomly divided into the control, HMGB1, AG490, and rapamycin groups...
October 18, 2016: Bosnian Journal of Basic Medical Sciences
Austin Nguyen, Sheila Bhavsar, Erinn Riley, Gabriel Caponetti, Devendra Agrawal
Introduction High mobility group box 1 is a versatile protein involved in gene transcription, extracellular signaling, and response to inflammation. Extracellularly, high mobility group box 1 binds to several receptors, notably the receptor for advanced glycation end-products. Expression of high mobility group box 1 and the receptor for advanced glycation end-products has been described in many cancers. Objectives To systematically review the available literature using PubMed and Web of Science to evaluate the clinical value of high mobility group box 1 and the receptor for advanced glycation end-products in head and neck squamous cell carcinomas...
October 2016: International Archives of Otorhinolaryngology
Xuefei Li, Xiaorong Hu, Jichun Wang, Weipan Xu, Chunfeng Yi, Ruisong Ma, Hong Jiang
BACKGROUND/AIMS: Hesperidin pretreatment has been shown to protect against myocardial ischemia/reperfusion (I/R) injury, but the underlying mechanism is poorly understood. This study aimed to investigate the cardioprotective effects of a 3-day hesperidin pretreatment on I/R injury and to further explore whether its mechanism of action was associated with the inhibition of high mobility group box 1 protein (HMGB1) expression via the PI3K/Akt pathway. METHODS: In a fixed-dose study, hematoxylin and eosin staining and myocardial enzyme measurements were used to determine the optimal dose of hesperidin that elicited the best cardioprotective effects against I/R injury...
October 17, 2016: Cellular Physiology and Biochemistry
Huili Wei, Hua Qu, Hang Wang, Huacong Deng
Aims. To detect the association of C1q/TNF-related protein-3 (CTRP-3) and high-mobility group box-1 (HMGB-1) in subjects with prediabetes (pre-DM) and newly diagnosed type 2 diabetes (nT2DM). Methods. 224 eligible participants were included. The 75 g oral glucose tolerance test (OGTT) and several clinical parameters of metabolic disorders and cytokines were measured. All participants were divided into three groups: normal glucose tolerance (NGT, n = 62), pre-DM (n = 111), and nT2DM group (n = 56). Results...
2016: Journal of Diabetes Research
Ian Litchfield, Martie van Tongeren, Tom Sorahan
Little is known about personal exposure to radiofrequency (RF) fields amongst employees in the telecommunications industry responsible for installing and maintaining transmitters. IARC classified RF exposure as a possible carcinogen, although evidence from occupational studies was judged to be inadequate. Hence, there is a need for improved evidence of any potentially adverse health effects amongst the workforce occupationally exposed to RF radiation. In this study, results are presented from an exposure survey using data from personal monitors used by employees in the broadcasting and telecommunication industries of the UK...
October 13, 2016: Radiation Protection Dosimetry
Tao Tian, Weiliang Tian, Fan Yang, Risheng Zhao, Qian Huang, Yunzhao Zhao
BACKGROUND: Sphingosine kinase 1 (SphK1)/sphingosine-1-phosphate (S1P)/sphingosine-1-phosphate receptors (S1PRs) signaling plays a key role in inflammatory responses. Lei et al. showed that SphK1 inhibition presented a hepatoprotective effect on acute liver damage via decreasing hepatic high-mobility group box 1 (HMGB1) cytoplasmic translocation. OBJECTIVE: We aim to determine whether SphK1 or S1PRs inhibition improves lipopolysaccharide (LPS)/D-galactosamine (GalN)-induced acute liver failure by inhibiting the mitogen-activated protein kinases (MAPKs) pathway...
October 2016: United European Gastroenterology Journal
Kayoko Waki, Akira Yamada
High Mobility Group Box 1 (HMGB1) is a member of the damage-associated molecular patterns (DAMPs), which cause inflammation and trigger innate immunity through Toll-like receptors (TLRs) 2/4 and the receptor for advanced glycation end products (RAGE). We examined the effect of glycyrrhizin, a selective inhibitor of HMGB1, on the induction of cytotoxic T-lymphocytes (CTLs) in mice. B6 mice, either OT-1 spleen cell-transferred or untransferred, were immunized with an s.c. injection of OVA257-264 peptide with topical imiquimod, and glycyrrhizin was mixed with the antigen peptide...
September 22, 2016: Cancer Science
Minchan Gil, Yun Kyu Kim, Sang Bum Hong, Kyung Jin Lee
Naringin, a flavanone glycoside extracted from various plants, has a wide range of pharmacological effects. In the present study, we investigated naringin's mechanism of action and its inhibitory effect on lipopolysaccharide-induced tumor necrosis factor-alpha and high-mobility group box 1 expression in macrophages, and on death in a cecal ligation and puncture induced mouse model of sepsis. Naringin increased heme oxygenase 1 expression in peritoneal macrophage cells through the activation of adenosine monophosphate-activated protein kinase, p38, and NF-E2-related factor 2...
2016: PloS One
Chunyan Yang, Yulong Song, Hui Wang
The present study aimed to investigate the protective role of ketamine in lipopolysaccharide (LPS)-induced acute lung injury (ALI) by the inhibition of the receptor for advanced glycation end products (RAGE) and toll-like receptor 9 (TLR9). ALI was induced in rats by intratracheal instillation of LPS (5 mg/kg), and ketamine (5, 7.5, and 10 mg/kg) was injected intraperitoneally 1 h after LPS administration. Meanwhile, A549 alveolar epithelial cells were incubated with LPS in the presence or absence of ketamine...
October 7, 2016: Journal of Investigative Surgery: the Official Journal of the Academy of Surgical Research
Cíntia Yuki Fukuoka, Gabriella Torres Schröter, José Nicolau, Alyne Simões
Low-power laser irradiation (LPLI) has been extensively employed to modulate inflammation in vitro and in vivo. Previous reports from our group indicated that LPLI might regulate glycemia in diabetic animals. Diabetes results in chronic hyperglycemia and therefore chronic inflammation by upregulation of inflammatory markers such as the high mobility group box 1 (HMGB1) protein. Thus this study aimed to analyze the LPLI effects upon blood glucose levels, plasma insulin and HMGB1 concentrations in a diabetes experimental rat model...
October 7, 2016: Journal of Biophotonics
Clementina Mesaros, Ian A Blair
Mass spectrometry-based proteomics methodology has become an important tool in elucidating some of the underlying mechanisms involved in cardiovascular disease. The present review provides details on selected important protein targets where highly selective and specific mass spectrometry-based approaches have led to important new findings and provided new mechanistic information. The role of six proteins involved in the etiology of cardiovascular disease (acetylated platelet cyclooxygenase-1, serum apolipoprotein A1, apolipoprotein C-III, serum C-reactive protein, serum high mobility group box-1 protein, insulin-like growth factor I) and their quantification has been discussed...
2016: Clinical Proteomics
Hsin-Hung Wu, Yu-Fan Liu, Shun-Fa Yang, Wea-Lung Lin, Shiuan-Chih Chen, Chih-Ping Han, Hsiang-Ling Wang, Long-Yau Lin, Po-Hui Wang
To date, no study associated the genetic polymorphisms of high-mobility group box 1 protein (HMGB1) with the development of uterine cervical cancer. We therefore conducted this study to investigate the associations of HMGB1 single-nucleotide polymorphisms (SNPs) with cervical carcinogenesis and clinicopathological characteristics of cancer patients. Five hundred two women, including 112 with invasive cancer, 85 with precancerous lesions of the uterine cervix, and 305 normal controls, were consecutively enrolled into this study...
October 4, 2016: Tumour Biology: the Journal of the International Society for Oncodevelopmental Biology and Medicine
Sabine Ladrech, Jing Wang, Marc Mathieu, Jean-Luc Puel, Marc Lenoir
High mobility group box 1 (HMGB1) is a DNA-binding protein that facilitates gene transcription and may act extracellularly as a late mediator of inflammation. The roles of HMGB1 in the pathogenesis of the spiral ganglion neurons (SGNs) of the cochlea are currently unknown. In the present study, we tested the hypothesis that early phenotypical changes in the SGNs of the amikacin-poisoned rat cochlea are mediated by HMGB1. Our results showed that a marked downregulation of HMGB1 had occurred by completion of amikacin treatment, coinciding with acute damage at the dendrite extremities of the SGNs...
October 4, 2016: Histochemistry and Cell Biology
Jennifer Zagelbaum, Noriko Shimazaki, Zitadel Anne Esguerra, Go Watanabe, Michael R Lieber, Eli Rothenberg
Single-molecule FRET (smFRET) and single-molecule colocalization (smCL) assays have allowed us to observe the recombination-activating gene (RAG) complex reaction mechanism in real time. Our smFRET data have revealed distinct bending modes at recombination signal sequence (RSS)-conserved regions before nicking and synapsis. We show that high mobility group box 1 (HMGB1) acts as a cofactor in stabilizing conformational changes at the 12RSS heptamer and increasing RAG1/2 binding affinity for 23RSS. Using smCL analysis, we have quantitatively measured RAG1/2 dwell time on 12RSS, 23RSS, and non-RSS DNA, confirming a strict RSS molecular specificity that was enhanced in the presence of a partner RSS in solution...
October 4, 2016: Proceedings of the National Academy of Sciences of the United States of America
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