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https://www.readbyqxmd.com/read/27917915/blood-hsa-mir-122-5p-and-hsa-mir-885-5p-levels-associate-with-fatty-liver-and-related-lipoprotein-metabolism-the-young-finns-study
#1
Emma Raitoharju, Ilkka Seppälä, Leo-Pekka Lyytikäinen, Jorma Viikari, Mika Ala-Korpela, Pasi Soininen, Antti J Kangas, Melanie Waldenberger, Norman Klopp, Thomas Illig, Jaana Leiviskä, Britt-Marie Loo, Niku Oksala, Mika Kähönen, Nina Hutri-Kähönen, Reijo Laaksonen, Olli Raitakari, Terho Lehtimäki
MicroRNAs are involved in disease development and may be utilized as biomarkers. We investigated the association of blood miRNA levels and a) fatty liver (FL), b) lipoprotein and lipid pathways involved in liver lipid accumulation and c) levels of predicted mRNA targets in general population based cohort. Blood microRNA profiling (TaqMan OpenArray), genome-wide gene expression arrays and nuclear magnetic resonance metabolomics were performed for Young Finns Study participants aged 34-49 years (n = 871)...
December 5, 2016: Scientific Reports
https://www.readbyqxmd.com/read/27899485/circulating-microrna-122-is-associated-with-the-risk-of-new-onset-metabolic-syndrome-and-type-2-diabetes
#2
Peter Willeit, Philipp Skroblin, Alexander R Moschen, Xiaoke Yin, Dorothee Kaudewitz, Anna Zampetaki, Temo Barwari, Meredith Whitehead, Cristina M Ramírez, Leigh Goedeke, Noemi Rotllan, Enzo Bonora, Alun D Hughes, Peter Santer, Carlos Fernández-Hernando, Herbert Tilg, Johann Willeit, Stefan Kiechl, Manuel Mayr
MicroRNA-122 (miR-122) is abundant in the liver and involved in lipid homeostasis, but its relevance to the long-term risk of developing metabolic disorders is unknown. We therefore measured circulating miR-122 in the prospective population-based Bruneck Study (n=810; survey year: 1995). Circulating miR-122 was associated with prevalent insulin resistance, obesity, metabolic syndrome, type-2 diabetes, and an adverse lipid profile. Among 92 plasma proteins and 135 lipid subspecies quantified with mass spectrometry, it correlated inversely with zinc-alpha-2-glycoprotein and positively with afamin, complement-factor H, VLDL-associated apolipoproteins, and lipid subspecies containing monounsaturated and saturated fatty acids...
November 29, 2016: Diabetes
https://www.readbyqxmd.com/read/27895094/crosstalk-between-microrna-122-and-fox-family-genes-in-hepg2-cells
#3
Subodh Kumar, Ankita Batra, Shruthi Kanthaje, Sujata Ghosh, Anuradha Chakraborti
MicroRNA-122 (miR-122) is liver specific and plays an important role in physiology as well as diseases including hepatocellular carcinoma (HCC). Downregulation of miR-122 in HCC modulates apoptosis. Similarly, the putative targets of miR-122, the forkhead box (FOX) family genes also play an important role in the regulation of apoptosis. Hence, an interplay between miR-122 and FOX family genes has been explored in this study. Initially, an augmentation of apoptosis was noticed in HepG2 cells after transfection with miR-122...
November 28, 2016: Experimental Biology and Medicine
https://www.readbyqxmd.com/read/27883021/identification-of-aberrant-trna-halves-expression-patterns-in-clear-cell-renal-cell-carcinoma
#4
Malin Nientiedt, Mario Deng, Doris Schmidt, Sven Perner, Stefan C Müller, Jörg Ellinger
Small non-coding RNAs (sncRNA; <200 nt) regulate various cellular processes and modify gene expression. Under nutritional, biological or physiochemical stress some mature sncRNAs (e.g. tRNAs) are cleaved into halves (30-50 nt) and smaller fragments (18-22 nt); the significance and functional role of these tRNA fragments is unknown, but their existence has been linked to carcinogenesis. We used small RNA sequencing to determine the expression of sncRNAs. Subsequently the findings were validated for miR-122-5p, miR-142-3p and 5'tRNA4-Val-AAC using qPCR...
November 24, 2016: Scientific Reports
https://www.readbyqxmd.com/read/27879410/triple-staining-including-foxa2-identifies-stem-cell-lineages-undergoing-hepatic-and-biliary-differentiation-in-cirrhotic-human-liver
#5
Charles E Rogler, Remon Bebawee, Joe Matarlo, Joseph Locker, Nicole Pattamanuch, Sanjeev Gupta, Leslie E Rogler
Recent investigations have reported many markers associated with human liver stem/progenitor cells, "oval cells," and identified "niches" in diseased livers where stem cells occur. However, there has remained a need to identify entire lineages of stem cells as they differentiate into bile ducts or hepatocytes. We have used combined immunohistochemical staining for a marker of hepatic commitment and specification (FOXA2 [Forkhead box A2]), hepatocyte maturation (Albumin and HepPar1), and features of bile ducts (CK19 [cytokeratin 19]) to identify lineages of stem cells differentiating toward the hepatocytic or bile ductular compartments of end-stage cirrhotic human liver...
November 22, 2016: Journal of Histochemistry and Cytochemistry: Official Journal of the Histochemistry Society
https://www.readbyqxmd.com/read/27876829/integrated-microrna-and-messenger-rna-analysis-in-aortic-stenosis
#6
Sean Coffey, Michael J A Williams, L Vicky Phillips, Ivor F Galvin, Richard W Bunton, Gregory T Jones
Aortic valve stenosis (AS) is a major cause of morbidity and mortality, with no effective medical therapies. Investigation into the underlying biology of AS in humans is limited by difficulties in obtaining healthy valvular tissue for use as a control group. However, micro-ribonucleic acids (miRNAs) are stable in post-mortem tissue. We compared valve specimens from patients undergoing aortic valve replacement for AS to non-diseased cadaveric valves. We found 106 differentially expressed miRNAs (p < 0...
November 23, 2016: Scientific Reports
https://www.readbyqxmd.com/read/27874954/the-anti-cancer-effects-of-cisplatin-on-hepatic-cancer-are-associated-with-modulation-of-mirna-21-and-mirna-122-expression
#7
X-L Shu, C-B Fan, B Long, X Zhou, Y Wang
OBJECTIVE: Cisplatin is an effective chemotherapeutic drug to treat hepatic cancer, but its efficacy is marred by extensive adverse effects. Micro (mi) RNAs are small regulatory RNAs that may be used as molecular targets to better fine-tune chemotherapy in hepatic cancer. In this study, we examined to what extent the anti-cancer effects of cisplatin are associated with expressions of miRNA (miR)-21 and miR-122. MATERIALS AND METHODS: The growth-inhibiting effects of cisplatin on the human hepatic cell line HepG2 were assessed by MTT assay, while cell apoptosis was documented using DAPI staining...
November 2016: European Review for Medical and Pharmacological Sciences
https://www.readbyqxmd.com/read/27874233/induction-of-hepatocyte-like-cells-from-human-umbilical-cord-derived-mesenchymal-stem-cells-by-defined-micrornas
#8
Xia Zhou, Lina Cui, Xinmin Zhou, Qiong Yang, Lu Wang, Guanya Guo, Yu Hou, Weile Cai, Zheyi Han, Yongquan Shi, Ying Han
Generating functional hepatocyte-like cells (HLCs) from mesenchymal stem cells (MSCs) is of great urgency for bio-artificial liver support system (BALSS). Previously, we obtained HLCs from human umbilical cord-derived MSCs by overexpressing seven microRNAs (HLC-7) and characterized their liver functions in vitro and in vivo. Here, we aimed to screen out the optimal miRNA candidates for hepatic differentiation. We sequentially removed individual miRNAs from the pool and examined the effect of transfection with remainder using RT-PCR, periodic acid-Schiff (PAS) staining and low-density lipoprotein (LDL) uptake assays and by assessing their function in liver injury models...
November 22, 2016: Journal of Cellular and Molecular Medicine
https://www.readbyqxmd.com/read/27870736/lidocaine-administration-controls-micrornas-alterations-observed-after-lung-ischemia-reperfusion-injury
#9
Lisa Rancan, Carlos Simón, Emmeline Marchal-Duval, Javier Casanova, Sergio Damian Paredes, Alberto Calvo, Cruz García, David Rincón, Agustín Turrero, Ignacio Garutti, Elena Vara
BACKGROUND: Ischemia-reperfusion injury (IRI) is associated with morbidity and mortality. MicroRNAs (miRNAs) have emerged as regulators of IRI, and they are involved in the pathogenesis of organ rejection. Lidocaine has proven anti-inflammatory activity in several tissues but its modulation of miRNAs has not been investigated. This work aims to investigate the involvement of miRNAs in lung IRI in a lung auto-transplantation model and to investigate the effect of lidocaine. METHODS: Three groups (sham, control, and Lidocaine), each comprising 6 pigs, underwent a lung autotransplantation...
December 2016: Anesthesia and Analgesia
https://www.readbyqxmd.com/read/27860186/profiles-of-mirnas-in-serum-in-severe-acute-drug-induced-liver-injury-and-their-prognostic-significance
#10
Mark W Russo, Nury Steuerwald, Harry J Norton, William E Anderson, David Foureau, Naga Chalasani, Robert J Fontana, Paul B Watkins, Jose Serrano, Herbert L Bonkovsky
BACKGROUND & AIMS: Drug induced liver injury (DILI) is challenging because of the lack of biomarkers to predict mortality. Our aim was to describe miRNA changes in sera of subjects with acute idiosyncratic DILI and determine if levels of miRNAs were associated with 6 month mortality. METHODS: Clinical data and sera were collected from subjects enrolled in the Drug Induced Liver Injury Network prospective study. miRNAs were isolated from serum obtained from 78 subjects within 2 weeks of acute DILI and followed up for 6 months or longer...
November 12, 2016: Liver International: Official Journal of the International Association for the Study of the Liver
https://www.readbyqxmd.com/read/27859748/use-of-serum-micrornas-as-biomarker-for-hepatobiliary-diseases-in-dogs
#11
K Dirksen, T Verzijl, G C Grinwis, R P Favier, L C Penning, I A Burgener, L J van der Laan, H Fieten, B Spee
BACKGROUND: Current biochemical indicators cannot discriminate between parenchymal, biliary, vascular, and neoplastic hepatobiliary diseases. MicroRNAs are promising new biomarkers for hepatobiliary disease in humans and dogs. OBJECTIVE: To measure serum concentrations of an established group of microRNAs in dogs and to investigate their concentrations in various types of hepatobiliary diseases. ANIMALS: Forty-six client-owned dogs with an established diagnosis of hepatobiliary disease and stored serum samples and eleven client-owned healthy control Labrador Retrievers...
November 2016: Journal of Veterinary Internal Medicine
https://www.readbyqxmd.com/read/27855320/mir-122-promotes-hepatic-antioxidant-defense-of-genetically-improved-farmed-tilapia-gift-oreochromis-niloticus-exposed-to-cadmium-by-directly-targeting-a-metallothionein-gene
#12
Jun Qiang, Yi-Fan Tao, Jie He, Pao Xu, Jin-Wen Bao, Yi-Lan Sun
MicroRNAs (miRNAs) are small, non-coding RNAs that regulate target gene expression by binding to the 3'untranslated region (3'UTR) of the target mRNA. MiRNAs regulate a large variety of genes, including those involved in liver homeostasis and energy metabolism. Down-regulated levels of hepatic miR-122 were found in genetically improved farmed tilapia (GIFT, Oreochromis niloticus) exposed to cadmium (Cd) stress. Here, we report for the first time that reduction of miR-122 post-transcriptionally increased metallothionein (MT) mRNA levels by binding to its 3'UTR, as shown by a 3' UTR luciferase reporter assay...
November 9, 2016: Aquatic Toxicology
https://www.readbyqxmd.com/read/27846390/erk-activation-globally-downregulates-mirnas-through-phosphorylating-exportin-5
#13
Hui-Lung Sun, Ri Cui, JianKang Zhou, Kun-Yu Teng, Yung-Hsuan Hsiao, Kotaro Nakanishi, Matteo Fassan, Zhenghua Luo, Guqin Shi, Esmerina Tili, Huban Kutay, Francesca Lovat, Caterina Vicentini, Han-Li Huang, Shih-Wei Wang, Taewan Kim, Nicola Zanesi, Young-Jun Jeon, Tae Jin Lee, Jih-Hwa Guh, Mien-Chie Hung, Kalpana Ghoshal, Che-Ming Teng, Yong Peng, Carlo M Croce
MicroRNAs (miRNA) are mostly downregulated in cancer. However, the mechanism underlying this phenomenon and the precise consequence in tumorigenesis remain obscure. Here we show that ERK suppresses pre-miRNA export from the nucleus through phosphorylation of exportin-5 (XPO5) at T345/S416/S497. After phosphorylation by ERK, conformation of XPO5 is altered by prolyl isomerase Pin1, resulting in reduction of pre-miRNA loading. In liver cancer, the ERK-mediated XPO5 suppression reduces miR-122, increases microtubule dynamics, and results in tumor development and drug resistance...
November 14, 2016: Cancer Cell
https://www.readbyqxmd.com/read/27805315/inducing-hepatitis-c-virus-resistance-after-pig-liver-transplantation-a-proof-of-concept-of-liver-graft-modification-using-warm-ex-vivo-perfusion
#14
Nicolas Goldaracena, Vinzent N Spetzler, Juan Echeverri, Johan M Kaths, Vera Cherepanov, Robert Persson, Michael G Hodges, Harry LA Janssen, Nazia Selzner, David R Grant, Jordan J Feld, Markus Selzner
Normothermic ex vivo liver perfusion (NEVLP) offers the potential to optimize graft function prior to liver transplantation (LT). Hepatitis C virus (HCV) is dependent on the presence of miRNA-122. Miravirsen, a locked-nucleic acid oligonucleotide, sequesters miR-122 and inhibits HCV replication. The aim of this study was to assess the efficacy of delivering miravirsen during NEVLP to inhibit miR-122 function in a pig LT model. Pig livers were treated with miravirsen during NEVLP or cold storage (CS). Miravirsen absorption, miR-122 sequestration and miR-122 target gene derepression were determined before and after LT...
November 2, 2016: American Journal of Transplantation
https://www.readbyqxmd.com/read/27793029/g6pc3-aldoa-and-cs-induction-accompanies-mir-122-down-regulation-in-the-mechanical-asphyxia-and-can-serve-as-hypoxia-biomarkers
#15
Yan Zeng, Yehui Lv, Li Tao, Jianlong Ma, Heng Zhang, Hongmei Xu, Bi Xiao, Qun Shi, Kaijun Ma, Long Chen
Hypoxia influences different cellular biological processes. To reveal the dynamics of hypoxia's effects on miRNA regulation in vivo, we examined the expression levels of all miRNAs in human brain and heart specimens from cases of mechanical asphyxia compared with those from cases of craniocerebral injury and hemorrhagic shock. We further validated differently expressed miRNAs in another 84 human specimens and rat models. We found that mir-122 was significantly down-regulated and that its putative targets G6PC3, ALDOA and CS were increased in the brain and cardiac tissues in cases of mechanical asphyxia compared with craniocerebral injury and hemorrhagic shock...
October 26, 2016: Oncotarget
https://www.readbyqxmd.com/read/27785887/exploration-of-biomarkers-for-amoxicillin-clavulanate-induced-liver-injury-multi-omics-approaches
#16
J Lee, S C Ji, B Kim, S Yi, K H Shin, J Y Cho, K S Lim, S H Lee, S H Yoon, J Y Chung, K S Yu, H S Park, S H Kim, I J Jang
To explore potential biomarkers for amoxicillin/clavulanate-induced liver injury (AC-DILI), we conducted a clinical trial in 32 healthy subjects based on multi-omics approaches. Every subject was administered amoxicillin/clavulanate for 14 days. The liver-specific microRNA-122 (miR-122) level increased prior to and correlated well with the observed alanine aminotransferase (ALT) level increase. This result indicates its potential as a sensitive early marker for AC-DILI. We also identified urinary metabolites, such as azelaic acid and 7-methylxanthine, with levels that significantly differed among the groups classified by ALT elevation level on day 8 after drug administration (P < 0...
October 26, 2016: Clinical and Translational Science
https://www.readbyqxmd.com/read/27782799/novel-equine-tissue-mirnas-and-breed-related-mirna-expressed-in-serum
#17
Alicja Pacholewska, Núria Mach, Xavier Mata, Anne Vaiman, Laurent Schibler, Eric Barrey, Vincent Gerber
BACKGROUND: MiRNAs regulate multiple genes at the post-transcriptional level and therefore play an important role in many biological processes. It has been suggested that miRNA exported outside the cells contribute to inter-cellular communication. Consequently, circulating miRNAs are of particular interest and are promising biomarkers for many diseases. The number of miRNAs annotated in the horse genome is much lower compared to model organisms like human and mouse. We therefore aimed to identify novel equine miRNAs for tissue types and breed in serum...
October 26, 2016: BMC Genomics
https://www.readbyqxmd.com/read/27731343/microrna-based-diagnostic-tools-for-advanced-fibrosis-and-cirrhosis-in-patients-with-chronic-hepatitis-b-and-c
#18
Kevin Appourchaux, Safi Dokmak, Matthieu Resche-Rigon, Xavier Treton, Martine Lapalus, Charles-Henry Gattolliat, Emmanuelle Porchet, Michelle Martinot-Peignoux, Nathalie Boyer, Michel Vidaud, Pierre Bedossa, Patrick Marcellin, Ivan Bièche, Emilie Estrabaud, Tarik Asselah
Staging fibrosis is crucial for the prognosis and to determine the rapid need of treatment in patients with chronic hepatitis B (CHB) and C (CHC). The expression of 13 fibrosis-related microRNAs (miRNAs) (miR-20a, miR-21, miR-27a, miR-27b, miR-29a, miR-29c, miR-92a, miR-122, miR-146a, miR-155, miR-221, miR-222, and miR-224) was analyzed in 194 serums and 177 liver biopsies of patients with either CHB or CHC to develop models to diagnose advanced fibrosis and cirrhosis (Metavir F3-F4). In CHB patients, the model (serum miR-122, serum miR-222, platelet count and alkaline phosphatase) was more accurate than APRI and FIB-4 to discriminate in between mild and moderate fibrosis (F1-F2) and F3-F4 (AUC of CHB model: 0...
October 12, 2016: Scientific Reports
https://www.readbyqxmd.com/read/27711358/a-dual-functional-supramolecular-hydrogel-based-on-a-spiropyran-galactose-conjugate-for-target-mediated-and-light-controlled-delivery-of-microrna-into-cells
#19
Xiao Xiao, Jing Hu, Xingxing Wang, Lei Huang, Yingjie Chen, Wei Wang, Jinbo Li, Yan Zhang
A supramolecular hydrogel formed by spiropyran conjugated galactose was developed for light-controlled release of miR-122 and target-mediated delivery of the miRNA into HepG2 cells cultured on top of the gel.
October 13, 2016: Chemical Communications: Chem Comm
https://www.readbyqxmd.com/read/27692039/proposed-update-to-the-taxonomy-of-the-genera-hepacivirus-and-pegivirus-within-the-flaviviridae-family
#20
Donald B Smith, Paul Becher, Jens Bukh, Ernest A Gould, Gregor Meyers, Thomas Monath, A Scott Muerhoff, Alexander Pletnev, Rebecca Rico-Hesse, Jack T Stapleton, Peter Simmonds
Proposals are described for the assignment of recently reported viruses, infecting rodents, bats and other mammalian species, to new species within the Hepacivirus and Pegivirus genera (family Flaviviridae). Assignments into 14 Hepacivirus species (Hepacivirus A-N) and 11 Pegivirus species (Pegivirus A-K) are based on phylogenetic relationships and sequence distances between conserved regions extracted from complete coding sequences for members of each proposed taxon. We propose that the species Hepatitis C virus is renamed Hepacivirus C in order to acknowledge its unique historical position and so as to minimize confusion...
November 2016: Journal of General Virology
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