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https://www.readbyqxmd.com/read/28646826/comparison-of-brca1-expression-between-triple-negative-and-luminal-breast-tumors
#1
Farzaneh Darbeheshti, Pantea Izadi, Amir Nader Emami Razavi, Mir Saeed Yekaninejad, Javad Tavakkoly Bazzaz
Background: Previous studies have suggested that BRCA1 dysregulation has a role in triple-negative phenotypic manifestation. However, differences of BRCA1 expression, as a tumor suppressor gene, have rarely been investigated between luminal and triple-negative breast tumors. Therefore, the present study attempted to compare the BRCA1 expression in triple-negative with luminal breast tumors and its association with the clinicopathologic characteristics of patients. Methods: BRCA1 expression was evaluated by real-time PCR in 26 triple-negative and 27 luminal breast tumors...
June 25, 2017: Iranian Biomedical Journal
https://www.readbyqxmd.com/read/28646700/increased-serum-mir-7-is-a-promising-biomarker-for-type-2-diabetes-mellitus-and-its-microvascular-complications
#2
Shujun Wan, Jun Wang, Jing Wang, Jia Wu, Jiaxi Song, Chen-Yu Zhang, Chunni Zhang, Cheng Wang, Jun-Jun Wang
AIMS: To investigate the alteration pattern and physiologic state of islet-specific miR-7 in the serum of patients with type 2 diabetes mellitus (T2DM) and T2DM-associated microvascular complications (T2DMC) and to evaluate its clinical significance. METHODS: The levels of serum miR-7 were firstly examined and compared in 76 T2DM patients, 76 T2DMC patients and 74 age-gender matched controls using RT-qPCR. Subsequently, the physiologic state of serum miR-7 was characterized by determining its concentrations in isolated exosomes and corresponding exosome-free samples from the same three cohorts' samples...
June 11, 2017: Diabetes Research and Clinical Practice
https://www.readbyqxmd.com/read/28646508/hepatic-stimulator-substance-resists-hepatic-ischemia-reperfusion-injury-by-regulating-drp1-translocation-and-activation
#3
Chao Zhang, Jing Huang, Wei An
Ischemia-reperfusion injury (IRI), induced by abnormal mitochondrial fission related apoptosis, is a major concern in liver transplantation settings. Our previous studies have demonstrated that hepatic stimulator substance (HSS) is an anti-apoptotic effector and could protect liver from IRI. However, the underlying mechanism remains unclear. In the present study, we report that in vitro and in vivo HSS could regulate mitochondrial fission and hepatocyte apoptosis during liver IRI by orchestrating the translocation and activation of dynamin-related protein 1 (Drp1)...
June 23, 2017: Hepatology: Official Journal of the American Association for the Study of Liver Diseases
https://www.readbyqxmd.com/read/28646427/tanshinone-iia-attenuates-atherosclerosis-in-apolipoprotein-e-knockout-mice-infected-with-porphyromonas-gingivalis
#4
Yan Xuan, Yue Gao, Hao Huang, Xiaoxuan Wang, Yu Cai, Qing Xian Luan
Tanshinone IIA (TSA), a pharmacologically active component isolated from Danshen, may prevent cardiovascular diseases due to its anti-inflammatory, anti-oxidative, and anti-adipogenic effects. Porphyromonas gingivalis, a major periodontal pathogen, may contribute to the progression of atherosclerosis. Here, we studied the effects of TSA on atherosclerosis in ApoE(-/-) mice with P. gingivalis infection. Eight-week-old ApoE(-/-) mice were randomized to (a) phosphate-buffered saline (PBS), (b) P. gingivalis, and (c) P...
June 23, 2017: Inflammation
https://www.readbyqxmd.com/read/28646226/a-microrna-signature-of-response-to-erlotinib-is-descriptive-of-tgf%C3%AE-behaviour-in-nsclc
#5
Madeline Krentz Gober, James P Collard, Katherine Thompson, Esther P Black
Our previous work identified a 13-gene miRNA signature predictive of response to the epidermal growth factor receptor (EGFR) inhibitor, erlotinib, in Non-Small Cell Lung Cancer cell lines. Bioinformatic analysis of the signature showed a functional convergence on TGFβ canonical signalling. We hypothesized that TGFβ signalling controls expression of the miRNA genes comprising an erlotinib response signature in NSCLC. Western analysis revealed that TGFβ signalling via Smad2/3/4 occurred differently between erlotinib-resistant A549 and erlotinib- sensitive PC9 cells...
June 23, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28646209/upregulation-of-circulating-microrna-134-in-adult-onset-still-s-disease-and-its-use-as-potential-biomarker
#6
Tsai-Ling Liao, Yi-Ming Chen, Chia-Wei Hsieh, Hsin-Hua Chen, Hsiu-Chin Lee, Wei-Ting Hung, Kuo-Tung Tang, Der-Yuan Chen
Adult-onset Still's disease (AOSD) is a multi-systemic inflammatory disorder of unknown etiology. To date, no single diagnostic test is available for AOSD. Herein, we investigated the pathogenic role of microRNAs in AOSD. MicroRNA profiles in plasma from AOSD patients and healthy controls were analyzed by microarray analysis, followed by quantitative reverse transcription PCR validation. The biological functions of microRNAs were evaluated using in vitro cell-based assay. Among the differentially expressed microRNAs, microRNA-134 (miR-134) expression was positively correlated with AOSD activity scores and significantly decreased after effective treatment...
June 23, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28646187/microrna-148-as-a-negative-regulator-of-the-common-tlr-adaptor-mediates-inflammatory-response-in-teleost-fish
#7
Qing Chu, Yunhang Gao, Dekun Bi, Tianjun Xu
MicroRNAs are small endogenous noncoding RNAs implicating in the regulation of diverse biological processes, including proliferation, differentiation, cancer, apoptosis, and viral infections. MicroRNAs regulate gene expression by either mRNA degradation or inhibition of protein translation. Although microRNAs have emerged as important controller involved in regulation of inflammatory response, the microRNA-mediated regulatory mechanism remains less clear in teleost. Here, we report that miR-148 targets MyD88 and down-regulates its expression by inhibition protein translation rather than degradation mRNA in miiuy croaker...
June 23, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28646161/circulating-exosomal-mir-125a-3p-as-a-novel-biomarker-for-early-stage-colon-cancer
#8
Jing Wang, Feihu Yan, Qi Zhao, Fei Zhan, Ruitao Wang, Liang Wang, Yanqiao Zhang, Xiaoyi Huang
Circulating exosome holds great potentials as biomarker for diagnosis and prognosis of human cancers. Previously, we have applied small RNA sequencing to identify aberrantly expressed exosomal miRNAs as candidates for diagnostic markers in colon cancer patients. In this validation cohort, plasma derived exosomal miRNA was isolated from 50 early-stage colon cancer patients and 50 matched healthy volunteers. Real-time qRT-PCR revealed that miR-125a-3p, miR-320c were significantly up-regulated in plasma exosomes of the patients with early stage colon cancer...
June 23, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28646148/mir-15b-5p-resensitizes-colon-cancer-cells-to-5-fluorouracil-by-promoting-apoptosis-via-the-nf-%C3%AE%C2%BAb-xiap-axis
#9
Ci Zhao, Qi Zhao, Chunhui Zhang, Guangyu Wang, Yuanfei Yao, Xiaoyi Huang, Fei Zhan, Yuanyuan Zhu, Jiaqi Shi, Jianan Chen, Feihu Yan, Yanqiao Zhang
Drug resistance, which is closely correlated with an imbalance in apoptosis, endows colorectal cancer (CRC) with enhanced progression capacity irrespective of the treatment with therapeutics. We report that miR-15b-5p is a tumor suppressor whose level is globally decreased in CRC cells and tissues. Over-expression of miR-15b-5p not only promoted 5-fluorouracil (5-FU)-induced cellular apoptosis but also reversed the chemoresistance of 5-FU in vitro and in vivo. As a key mediator of inflammation-induced cancer, miR-15b-5p enhances these therapeutic effects are mainly attributed to targeting of the NF-κB signaling pathway through negative regulation of NF-κB1 and one of its kinase complexes IKK-α...
June 23, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28646123/expression-of-mir-23a-induces-telomere-shorteningand-is-associated-with-poor-clinical-outcomesin-patients-with-coronary-artery-disease
#10
Mamoru Satoh, Takahito Nasu, Yuji Takahashi, Takuya Osaki, Sho Hitomi, Yoshihiro Morino, Motoyuki Nakamura
Telomeric repeat binding factor 2 (TRF2) plays an important role in telomere maintenance. MicroRNA (miR)-23a may directly inhibit TRF2 expression, inducing telomere shortening and cellular senescence. This study aimed to determine whether miR-23a and TRF2 are expressed in patients with coronary artery disease (CAD), and whether pitavastatin might affect these levels. This study included 104 patients with CAD and 50 controls. Patients with CAD were randomly divided into two subgroups [a moderate lipid lowering therapy (LLT) group and an aggressive LLT group]...
June 23, 2017: Clinical Science (1979-)
https://www.readbyqxmd.com/read/28646120/mir-223-represents-a-biomarker-in-acute-and-chronic-liver-injury
#11
Florian Schueller, Sanchari Roy, Sven Heiko Loosen, Jan Alder, Christiane Koppe, Anne Theres Schneider, Franziska Wandrer, Heike Bantel, Mihael Vucur, Qing-Sheng Mi, Christian Trautwein, Tom Luedde, Christoph Roderburg
Background: Dysregulation of miRNAs has been described in tissue and serum from patients with acute and chronic liver diseases. However, only little information on the role of miR-223 in the pathophysiology of acute liver failure (ALF) and liver cirrhosis is available.  Methods: We analysed cell and tissue specific expression levels as well as serum concentrations of miR-223 in mouse models of acute (hepatic ischemia and reperfusion, single CCl4 injection) and chronic (repetitive CCl4 injection, bile duct ligation) liver diseases...
June 23, 2017: Clinical Science (1979-)
https://www.readbyqxmd.com/read/28646119/rest-suppression-mediates-neural-conversion-of-adult-human-fibroblasts-via-microrna-dependent-and-independent-pathways
#12
Janelle Drouin-Ouellet, Shong Lau, Per Ludvik Brattås, Daniella Rylander Ottosson, Karolina Pircs, Daniela A Grassi, Lucy M Collins, Romina Vuono, Annika Andersson Sjöland, Gunilla Westergren-Thorsson, Caroline Graff, Lennart Minthon, Håkan Toresson, Roger A Barker, Johan Jakobsson, Malin Parmar
Direct conversion of human fibroblasts into mature and functional neurons, termed induced neurons (iNs), was achieved for the first time 6 years ago. This technology offers a promising shortcut for obtaining patient- and disease-specific neurons for disease modeling, drug screening, and other biomedical applications. However, fibroblasts from adult donors do not reprogram as easily as fetal donors, and no current reprogramming approach is sufficiently efficient to allow the use of this technology using patient-derived material for large-scale applications...
June 23, 2017: EMBO Molecular Medicine
https://www.readbyqxmd.com/read/28646021/eif1ax-and-nras-mutations-co-occur-and-cooperate-in-low-grade-serous-ovarian-carcinomas
#13
Dariush Etemadmoghadam, Walid J Azar, Ying Lei, Tania Moujaber, Dale W Garsed, Catherine Kennedy, Sian Fereday, Chris Mitchell, Yoke-Eng Chiew, Joy Hendley, Australian Ovarian Cancer Study Group, Raghwa Sharma, Paul Harnett, Jason Li, Elizabeth L Christie, Ann-Marie Patch, Joshy George, George Au-Yeung, Gisela Mir Arnau, Timothy P Holloway, Timothy Semple, John V Pearson, Nicola Waddell, Sean Grimmond, Martin Köbel, Helen Rizos, Ivan Lomakin, David D L Bowtell, Anna DeFazio
Low-grade serous ovarian carcinomas (LGSC) are associated with a poor response to chemotherapy and are molecularly characterized by RAS pathway activation. Using exome and whole genome sequencing we identified recurrent mutations in the protein translational regulator EIF1AX and in NF1, USP9X, KRAS, BRAF and NRAS. RAS pathway mutations were mutually exclusive, however we found significant co-occurrence of mutations in NRAS and EIF1AX Missense EIF1AX mutations were clustered at the N-terminus of the protein in a region associated with its role in ensuring translational initiation fidelity...
June 23, 2017: Cancer Research
https://www.readbyqxmd.com/read/28645739/mir-1224-inhibits-cell-proliferation-in-acute-liver-failure-by-targeting-the-antiapoptotic-gene-nfib
#14
Sanchari Roy, Heike Bantel, Franziska Wandrer, Anne Theres Schneider, Jeremie Gautheron, Mihael Vucur, Frank Tacke, Christian Trautwein, Tom Luedde, Christoph Roderburg
BACKGROUND AND AIMS: Patient outcome in acute liver failure (ALF) is crucially determined by the appropriate balance between cell death and compensatory cell proliferation. MicroRNAs (miRNAs) - small non-coding RNAs that function as guide molecules in RNA silencing - have evolved as crucial mediators of nearly all developmental and pathological processes including physiology and disease of the liver. We investigated the role of miR-1224 during ALF. METHODS: We measured miR-1224 in livers of mice in various acute liver disease murine models and in ALF patients using quantitative real-time polymerase chain reaction...
June 20, 2017: Journal of Hepatology
https://www.readbyqxmd.com/read/28645161/lncrna-tug1-influences-papillary-thyroid-cancer-cell-proliferation-migration-and-emt-formation-through-targeting-mir-145
#15
Hongwei Lei, Yan Gao, Xiaoying Xu
LncRNA TUG1, a tumor oncogene associated with various human cancers, has been reported to be involved in regulating various cellular processes, such as proliferation, apoptosis and invasion through targeting multiple genes. However, its biological function in thyroid cancer cells has not been elucidated. The aim of this study is to measure TUG1 expression level and evaluate its function in thyroid cancer cells. LncRNA TUG1 expression levels in thyroid cancer tissues and three thyroid cancer cell lines (the ATC cell lines SW1736 and KAT18 and the FTC cell line FTC133) were assessed by qRT-PCR and compared with that of the human normal breast epithelial cell HGC-27...
June 22, 2017: Acta Biochimica et Biophysica Sinica
https://www.readbyqxmd.com/read/28645015/mid-infrared-and-near-infrared-spectroscopy-for-rapid-detection-of-gardeniae-fructus-by-a-liquid-liquid-extraction-process
#16
Lingyan Tao, Zhonglin Lin, Jiashan Chen, Yongjiang Wu, Xuesong Liu
Gardeniae Fructus is widely used in the pharmaceutical industry, and many studies have confirmed its medical and economic value. In this study, samples collected from different liquid-liquid extraction batches of Gardeniae Fructus were detected by mid-infrared (MIR) and near-infrared (NIR) spectroscopy. Seven analytes, neochlorogenic acid (5-CQA), cryptochlorogenic acid (4-CQA), chlorogenic acid (3-CQA), geniposidic acid (GEA), deacetyl-asperulosidic acid methyl ester (DAAME), genipin-gentiobioside (GGB), and gardenoside (GA), were chosen as quality property indexes of Gardeniae Fructus...
June 16, 2017: Journal of Pharmaceutical and Biomedical Analysis
https://www.readbyqxmd.com/read/28645008/effect-of-microrna-129-5p-targeting-hmgb1-rage-signaling-pathway-on-revascularization-in-a-collagenase-induced-intracerebral-hemorrhage-rat-model
#17
Xin-Long Ma, Shu-Ya Li, Feng Shang
BACKGROUND: This study aimed at exploring the effect of microRNA-129-5p (miR-129-5p) targeting high mobility group box-1 (HMGB1)-receptor for advanced glycation end-products (RAGE) signaling pathway on the revascularization in a collagenase-induced intracerebral hemorrhage (ICH) rat model. METHODS: OX26-pGFAP-IL, an immunoliposome expressing miR-129-5p was constructed. The collagenase-induced ICH rat models were successfully established by 96 Sprague Dawley (SD) rats, which were categorized into the sham group, ICH group, miR-129-5p group, negative control (NC) group, ethyl pyruvate (EP, an inhibitor of HMGB1) group and N-benzyl-4-chloro-N-cyclohe-xylbenzamide (FPS-ZM1, a RAGE receptor antagonist) group...
June 20, 2017: Biomedicine & Pharmacotherapy, Biomédecine & Pharmacothérapie
https://www.readbyqxmd.com/read/28644441/micrornas-143-and-145-induce-epithelial-to-mesenchymal-transition-and-modulate-the-expression-of-junction-proteins
#18
Lidia Avalle, Danny Incarnato, Aurora Savino, Marta Gai, Francesca Marino, Sara Pensa, Isaia Barbieri, Michael B Stadler, Paolo Provero, Salvatore Oliviero, Valeria Poli
Transforming growth factor (TGF)-β is one of the major inducers of epithelial to mesenchymal transition (EMT), a crucial program that has a critical role in promoting carcinoma's metastasis formation. MicroRNAs-143 and -145, which are both TGF-β direct transcriptional targets, are essential for the differentiation of vascular smooth muscle cells (VSMC) during embryogenesis, a TGF-β-dependent process reminiscent of EMT. Their role in adult tissues is however less well defined and even ambiguous, as their expression was correlated both positively and negatively with tumor progression...
June 23, 2017: Cell Death and Differentiation
https://www.readbyqxmd.com/read/28644440/lncrna-sarcc-suppresses-renal-cell-carcinoma-rcc-progression-via-altering-the-androgen-receptor-ar-mirna-143-3p-signals
#19
Wei Zhai, Yin Sun, Changcheng Guo, Guanghui Hu, Mingchao Wang, Jiayi Zheng, WanYing Lin, Qingbo Huang, Gonghui Li, Junhua Zheng, Chawnshang Chang
While the androgen receptor (AR) might promote renal cell carcinoma (RCC) initiation and progression, the molecular mechanisms involved remain largely unclear. Here, we discovered the novel LncRNA-SARCC, which was suppressed and associated with better prognosis in RCC. Preclinical studies using multiple RCC cells and in vivo mouse model indicated that LncRNA-SARCC could attenuate RCC cell invasion, migration and proliferation in vitro and in vivo. Mechanistically, LncRNA-SARCC bound and destabilized AR protein with an inhibition of AR function, which led to transcriptionally de-repress miR-143-3p expression, thus inhibition of its downstream signals including AKT, MMP-13, K-RAS and P-ERK...
June 23, 2017: Cell Death and Differentiation
https://www.readbyqxmd.com/read/28644119/damage-control-plating-in-open-tibial-shaft-fractures-a-cheaper-and-equally-effective-alternative-to-spanning-external-fixation
#20
Paul S Whiting, Phillip M Mitchell, Aaron M Perdue, Arnold J Silverberg, Sarah E Greenberg, Rachel V Thakore, Vasanth Sathiyakumar, Hassan R Mir, William T Obremskey, Manish K Sethi
The purpose of this study was to evaluate damage control plating (DCP) as an alternative to external fixation (EF) in the provisional stabilization of open tibial shaft fractures. Through retrospective analysis, the study found 445 patients who underwent operative fixation for tibial shaft fractures from 2008 to 2012. Twenty patients received DCP or EF before intramedullary nailing with a minimum follow-up of 3 months. Charts and radiographs were reviewed for postoperative complications. Hospital charges were reviewed for implant costs...
2017: Journal of Surgical Orthopaedic Advances
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