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https://www.readbyqxmd.com/read/28431400/local-delivery-of-hmgb1-in-gelatin-sponge-scaffolds-combined-with-mesenchymal-stem-cell-sheets-to-accelerate-fracture-healing
#1
Deting Xue, Wei Zhang, Erman Chen, Xiang Gao, Ling Liu, Chenyi Ye, Yanbin Tan, Zhijun Pan, Hang Li
Fracture nonunion and delayed union continue to pose challenges for orthopedic surgeons. In the present study, we combined HMGB1 gelatin sponges with MSC sheets to promote bone healing after surgical treatment of rat tibial fractures. The HMGB1 gelatin sponge scaffolds supported the expansion of mesenchymal stem cells (MSCs) and promoted the osteogenic differentiation of MSCs and MSC sheets. Lentiviral vectors were then used to overexpress HMGB1 in MSCs. The results indicated that HMGB1 promotes the osteogenic differentiation of MSCs through the STAT3 pathway...
April 6, 2017: Oncotarget
https://www.readbyqxmd.com/read/28428881/nano-pulse-stimulation-is-a-physical-modality-that-can-trigger-immunogenic-tumor-cell-death
#2
Richard Nuccitelli, Amanda McDaniel, Snjezana Anand, John Cha, Zachary Mallon, Jon Casey Berridge, Darrin Uecker
BACKGROUND: We have been developing a non-thermal, drug-free tumor therapy called Nano-Pulse Stimulation (NPS) that delivers ultrashort electric pulses to tumor cells which eliminates the tumor and inhibits secondary tumor growth. We hypothesized that the mechanism for inhibiting secondary tumor growth involves stimulating an adaptive immune response via an immunogenic form of apoptosis, commonly known as immunogenic cell death (ICD). ICD is characterized by the emission of danger-associated molecular patterns (DAMPs) that serve to recruit immune cells to the site of the tumor...
2017: Journal for Immunotherapy of Cancer
https://www.readbyqxmd.com/read/28428710/cma-down-regulates-p53-expression-through-degradation-of-hmgb1-protein-to-inhibit-irradiation-triggered-apoptosis-in-hepatocellular-carcinoma
#3
Jing-Hua Wu, Jia-Pei Guo, Jun Shi, Hui Wang, Lei-Lei Li, Bin Guo, Dian-Xing Liu, Qing Cao, Zhi-Yong Yuan
AIM: To investigate the mechanism of chaperone-mediated autophagy (CMA)-induced resistance to irradiation-triggered apoptosis through regulation of the p53 protein in hepatocellular carcinoma (HCC). METHODS: Firstly, we detected expression of lysosome-associated membrane protein 2a (Lamp-2a), which is the key protein of CMA, by western blot in HepG2 and SMMC7721 cells after irradiation. We further used shRNA Lamp-2a HCC cells to verify the radioresistance induced by CMA...
April 7, 2017: World Journal of Gastroenterology: WJG
https://www.readbyqxmd.com/read/28427050/expression-of-high-mobility-group-protein-b1-in-cardiac-tissue-of-elderly-patients-with-coronary-artery-disease-with-or-without-inflammatory-rheumatic-disease
#4
Mei Bruton, Ivana Hollan, Julie Xiao, Eva Lindroos, Knut Mikkelsen, Stein E Rynning, Kjell Saatvedt, Sven M Almdahl, Helena E Harris, Ingrid E Lundberg, Cecilia Wick
BACKGROUND: It is known from clinical practice and observational studies that elderly patients with a diagnosis of inflammatory rheumatic diseases (IRD) bear a significantly increased risk for cardiovascular diseases such as coronary artery disease (CAD) and heart failure. The molecular mechanism, however, is still not known. Recently, high mobility group protein B1 (HMGB1), a ubiquitous, highly conserved single polypeptide expressed in all mammal eukaryotic cells, has been identified to mediate myocardial dysfunction in vitro once released from the nuclei of cardiomyocytes...
April 21, 2017: Gerontology
https://www.readbyqxmd.com/read/28427045/mir-142-3p-overexpression-increases-chemo-sensitivity-of-nsclc-by-inhibiting-hmgb1-mediated-autophagy
#5
Yuqing Chen, Xin Zhou, Jianou Qiao, Aihua Bao
BACKGROUND: Non-small-cell lung cancer (NSCLC) is a deadly cancer with high mortality rate. Drug resistance represents a main obstacle in NSCLC treatment. High mobility group box-1 (HMGB1) protein promotes drug resistance in NSCLC cells by activating protective autophagy. METHODS: In the current study, we investigated the regulatory role of microRNA-142-3p (miR-142-3p) in HMGB1-mediated autophagy of NSCLC cells and its impact on drug resistance of NSCLC in vitro and in vivo...
March 16, 2017: Cellular Physiology and Biochemistry
https://www.readbyqxmd.com/read/28426082/deciphering-of-interactions-between-platinated-dna-and-hmgb1-by-hydrogen-deuterium-exchange-mass-spectrometry
#6
Yuanyuan Wang, Zhifeng Du, Wei Zheng, Kui Wu, Decheng Xu, Qun Luo, Yao Zhao, Juanjuan Han, Yangzhong Liu, Fuyi Wang
A high mobility group box 1 (HMGB1) protein has been reported to recognize both 1,2-intrastrand crosslinked DNA by cisplatin (1,2-cis-Pt-DNA) and monofunctional platinated DNA using trans-[PtCl2(NH3)(thiazole)] (1-trans-PtTz-DNA). However, the molecular basis of recognition between the trans-PtTz-DNA and HMGB1 remains unclear. In the present work, we described a hydrogen/deuterium exchange mass spectrometry (HDX-MS) method in combination with docking simulation to decipher the interactions of platinated DNA with domain A of HMGB1...
April 20, 2017: Dalton Transactions: An International Journal of Inorganic Chemistry
https://www.readbyqxmd.com/read/28424555/hmgb1-is-negatively-correlated-with-the-development-of-endometrial-carcinoma-and-prevents-cancer-cell-invasion-and-metastasis-by-inhibiting-the-process-of-epithelial-to-mesenchymal-transition
#7
Xiaorong Luan, Chunjing Ma, Ping Wang, Fenglan Lou
High-mobility group box protein 1 (HMGB1), a nuclear protein that plays a significant role in DNA architecture and transcription, was correlated with the progression of some types of cancer. However, the role of HMGB1 in endometrial cancer cell invasion and metastasis remains unexplored. HMGB1 expression was initially assessed by immunohistochemistry and reverse transcription-quantitative polymerase chain reaction (RT-qPCR) in normal endometrial tissue and endometrial carcinoma tissue. High expressions of HMGB1 protein were detected in normal endometrial tissues; however, in endometrial cancer tissues, the expressions of HMGB1 were found to be very weak...
2017: OncoTargets and Therapy
https://www.readbyqxmd.com/read/28423715/a-functional-variant-at-the-mirna-binding-site-in-hmgb1-gene-is-associated-with-risk-of-oral-squamous-cell-carcinoma
#8
Chiao-Wen Lin, Ying-Erh Chou, Chia-Ming Yeh, Shun-Fa Yang, Chun-Yi Chuang, Yu-Fan Liu
Oral squamous cell carcinoma (OSCC) is a common malignancy that has been causally associated with both hereditary and acquired factors. The high mobility group box 1 (HMGB1) gene plays an important role as a DNA chaperone to help maintain nuclear homeostasis. Altered expression of HMGB1 has been implicated in a wide range of pathological processes, including inflammation and cancer. The present study explores the impact of HMGB1 gene polymorphisms, combined with environmental risks regarding susceptibility to oral tumorigenesis...
March 11, 2017: Oncotarget
https://www.readbyqxmd.com/read/28420473/-the-study-of-serum-complements-and-proinflammatory-cytokines-in-sepsis-rats
#9
Ping Sun, Dongqiang Wang, Chunlei Zhou, Zhiqin Tang, Wei Liu, Hong Mu
OBJECTIVE: To observe the changes of serum complements and proinflammatory cytokines in rats with sepsis, and to explore the possible mechanism. METHODS: 120 healthy male Wistar rats were randomly divided into three groups: normal control group (n = 15), sham operation group (n = 15) and sepsis group [cecum ligation and puncture (CLP) operation, n = 90]. The sepsis rats were sacrificed on 24, 48 and 72 hours after modeling. The level of serum complements (C5, C5a) and cytokines tumor necrosis factor-α (TNF-α), interleukin (IL-1, IL-6), high mobility group box 1 (HMGB1), macrophage migration inhibitory factor (MIF) were detected by enzyme linked immunosorbent assay (ELISA)...
April 2017: Zhonghua Wei Zhong Bing Ji Jiu Yi Xue
https://www.readbyqxmd.com/read/28420464/-effect-of-combination-therapy-with-propofol-and-hydrogen-rich-saline-on-organ-damage-and-cytokines-in-a-murine-model-of-sepsis
#10
Yunchuan Hong, Hongguang Chen, Yonghao Yu, Keliang Xie
OBJECTIVE: To investigate the effect of combining propofol with hydrogen on organ damage and inflammation of sepsis in cecal ligation and puncture (CLP) mice model. METHODS: One hundred and forty male C57BL/6 mice were randomly divided into groups (n = 28): sham group, CLP group, propofol group, H2 group, and propofol and H2 group. The sepsis was induced by CLP operation. Mice in sham group did the same operation with ligation and puncture. The mice of propofol group and propofol and H2 group were given 50 mg/kg propofol through tail vein at 1 hour and 6 hours after CLP and the mice of H2 group and propofol and H2 group were given 5 mL/kg H2-rich saline i...
April 2017: Zhonghua Wei Zhong Bing Ji Jiu Yi Xue
https://www.readbyqxmd.com/read/28420461/-%C3%AE-7-nicotinic-acetylcholine-receptor-agonist-attenuated-the-lipopolysaccharide-induced-inflammatory-response-via-inhibiting-the-activation-of-nuclear-factor-%C3%AE-b
#11
Xingxing Shi, Jianhua Yao, Cheng Wang, Xijing Zhang
OBJECTIVE: To investigate the effects of α7 nicotinic acetylcholine receptor (α7nAChR) on the inflammatory response induced by lipopolysaccharide (LPS) in RAW264.7 macrophages and its molecular mechanisms. METHODS: RAW264.7 macrophages were cultured in vitro. Inflammatory cell model was constructed by LPS stimulation. Cells were challenged by LPS (1, 10, 100 and 500 μg/L) for 5 hours or 100 μg/L LPS for 0, 2, 4, 8, 12, 24, 48 and 72 hours, and the release of tumor necrosis factor-α (TNF-α) was detected by the enzyme linked immunosorbent assay (ELISA)...
April 2017: Zhonghua Wei Zhong Bing Ji Jiu Yi Xue
https://www.readbyqxmd.com/read/28420111/plantago-asiatica-l-ameliorates-puromycin-aminonucleoside-induced-nephrotic-syndrome-by-suppressing-inflammation-and-apoptosis
#12
Min Chul Kho, Ji Hun Park, Byung Hyuk Han, Rui Tan, Jung Joo Yoon, Hye Yoom Kim, You Mee Ahn, Yun Jung Lee, Dae Gill Kang, Ho Sub Lee
OBJECTIVE: Nephrotic syndrome, a kidney disease with a variety of causes, is mainly characterized by heavy proteinuria, hypoproteinemia, and ascites. This study was designed to evaluate the underlying mechanism of action of Plantago asiatica L. (PAL) in treating nephrotic syndrome induced by puromycin aminonucleoside. METHODS: PAL has been used in Asia as a traditional medicine and dietary health supplement. Sprague-Dawley (SD) rats were intravenously injected with puromycin aminonucleoside (75 mg/kg/day), then treated with either Losartan (30 mg/kg/day) or PAL (200 mg/kg/day) by oral gavage for seven days...
April 14, 2017: Nutrients
https://www.readbyqxmd.com/read/28417016/hmgb1-release-by-h2o2-induced-hepatocytes-is-regulated-through-calcium-overload-and-58-f-interference
#13
Pei Zhao, Tingjie Ye, Xiaofeng Yan, Xudong Hu, Ping Liu, Xiaoling Wang
HMGB1 is passively released by injured or dying cells and aggravates inflammatory processes. The release of HMGB1 and calcium overload have each been reported to be important mediators of H2O2-induced injury. However, a potential connection between these two processes remains to be elucidated. In the present study, we employed H2O2-induced hepatocytes to investigate how calcium overload takes place during cellular injury and how the extracellular release of HMGB1 is regulated by this overload. In addition, we investigated the use of 58-F, a flavanone extracted from Ophiopogon japonicus, as a potential therapeutic drug...
2017: Cell Death Discovery
https://www.readbyqxmd.com/read/28416955/down-regulation-of-serum-high-mobility-group-box-1-protein-in-patients-with-pulmonary-tuberculosis-and-nontuberculous-mycobacterial-lung-disease
#14
Su-Young Kim, Won-Jung Koh, Hye Yun Park, Kyeongman Jeon, Soo-Youn Lee, Jae-Joon Yim, Sung Jae Shin
BACKGROUND: Recently, increased levels of high-mobility group box 1 protein (HMGB1) have been identified in various inflammatory conditions and infections. However, no studies have evaluated the HMGB1 level in nontuberculous mycobacterial (NTM) lung disease, and compared it to mycobacterial lung disease. METHODS: A total of 60 patients newly diagnosed with NTM lung disease, 44 culture-positive pulmonary tuberculosis (TB) patients, and 34 healthy controls, were included in this study...
April 2017: Tuberculosis and Respiratory Diseases
https://www.readbyqxmd.com/read/28416441/glechoma-hederacea-extracts-attenuate-cholestatic-liver-injury-in-a-bile-duct-ligated-rat-model
#15
Ya-Yu Wang, Shih-Yi Lin, Wen-Ying Chen, Su-Lan Liao, Chih-Cheng Wu, Pin-Ho Pan, Su-Tze Chou, Chun-Jung Chen
ETHNOPHARMACOLOGICAL RELEVANCE: In traditional Chinese medicine, Glechoma hederacea is frequently prescribed to patients with cholelithiasis, dropsy, abscess, diabetes, inflammation, and jaundice. Polyphenolic compounds are main bioactive components of Glechoma hederacea. AIM OF THE STUDY: This study was aimed to investigate the hepatoprotective potential of hot water extract of Glechoma hederacea against cholestatic liver injury in rats. MATERIALS AND METHODS: Cholestatic liver injury was produced by ligating common bile ducts in Sprague-Dawley rats...
April 14, 2017: Journal of Ethnopharmacology
https://www.readbyqxmd.com/read/28415958/glycyrrhizic-acid-exerts-anti-inflammatory-effect-to-improve-cerebral-vasospasm-secondary-to-subarachnoid-hemorrhage-in-a-rat-model
#16
Yi Li, Fengbin Sun, Zhaohui Jing, Xuhui Wang, Xuming Hua, Liang Wan
This study aimed to investigate the therapeutic effect of glycyrrhizic acid (GA) on the cerebral vasospasm (CVS) in a rat subarachnoid hemorrhage (SAH) model and to explore the potential mechanism. A total of 44 healthy male rats were randomly assigned into 3 groups: control group (n = 12), SAH group (n = 16) and GA group (n = 16). No treatment was conducted in control group; in SAH group and GA group, experimental CVS was induced using a double-hemorrhage model and then rats were intraperitoneally injected with normal saline and GA at 10 mg/kg, respectively, once daily...
April 17, 2017: Neurological Research
https://www.readbyqxmd.com/read/28415753/high-mobility-group-box-1-antagonist-limits-metastatic-seeding-in-the-lungs-via-reduction-of-cell-cell-adhesion
#17
Adi Karsch-Bluman, Benzion Amoyav, Nethanel Friedman, Hila Shoval, Ouri Schwob, Ezra Ella, Ori Wald, Ofra Benny
Metastatic spread is the leading cause for cancer-related mortality, with the lungs being a major site for metastatic seeding. Available therapies for patients with metastatic disease are extremely limited. Therefore, there is a desperate need for new strategies to prevent or limit metastatic dissemination and treat existing metastases. The metastatic cascade is highly complex and is affected by multiple factors related to both tumor cells themselves and the microenvironment in the future site of metastasis...
March 14, 2017: Oncotarget
https://www.readbyqxmd.com/read/28414197/engineering-of-a-self-adjuvanted-itep-delivered-ctl-vaccine
#18
Shuyun Dong, Tiefeng Xu, Peng Wang, Peng Zhao, Mingnan Chen
Cytotoxic T lymphocyte (CTL) epitope peptide-based vaccines are widely used in cancer and infectious disease therapy. We previously generated an immune-tolerant elastin-like polypeptides (iTEPs)-based carrier to deliver a peptide CTL vaccine and enhance the efficiency of the vaccine. To further optimize the vaccine carrier, we intended to potentiate its function by designing an iTEP-based carrier that was able to deliver adjuvant and a vaccine epitope as one molecule. Thus, we fused a 9-mer H100, a peptide derived from the high-mobility group box 1 protein (HMGB1) that could induce activation of dendritic cells (DCs), with an iTEP polymer to generate a new iTEP polymer named H100-iTEP...
April 17, 2017: Acta Pharmacologica Sinica
https://www.readbyqxmd.com/read/28413110/seawater-immersion-aggravates-burn-associated-lung-injury-and-inflammatory-and-oxidative-stress-responses
#19
Jun Ma, Ying Wang, Qi Wu, Xiaowei Chen, Jiahan Wang, Lei Yang
With the increasing frequency of marine development activities and local wars at sea, the incidence of scald burns in marine accidents or wars has been increasing yearly. Various studies have indicated that immersion in seawater has a systemic impact on some organs of animals or humans with burn. Thus, for burn/scald injuries after immersion in seawater, it is desirable to study the effects and mechanisms of action on important organs. In the present study, we aimed to investigate the effect of immersion in seawater on lung injury, inflammatory and oxidative-stress responses in scalded rats...
April 13, 2017: Burns: Journal of the International Society for Burn Injuries
https://www.readbyqxmd.com/read/28410331/the-role-of-erbin-in-gts-21-regulating-inflammtory-responses-in-mdp-stimulated-macrophages
#20
Xiao-Jing Wu, Xu-Ming Yang, Xue-Min Song, Yang Xu, Jian-Guo Li, Yan-Lin Wang, Zong-Ze Zhang, Lin-Li Le, Hui Liang, Yin Zhang
OBJECTIVE: To explore the role of Erbin protein and nucleotide-binding oligomerization domain 2/receptor-interacting serine/threonine protein kinases (NOD2/RICK) in GTS-21 activating cholinergic anti-inflammatory pathway. METHODS: Experiments were randomly divided into four groups: normal control (NC) group, muramyl dipeptide (MDP) group, 10 μg/mL MDP, GTS-21 (GTS) group, 10 μg/mL MDP plus 50 μg/mL GTS-21 (α7 nAChRs agonist), Erbin shRNA interference (sh-Erbin) group: sh-Erbin RNA plus 10 μg/mL MDP and 50 μg/mL GTS-21...
May 2017: Shock
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