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https://www.readbyqxmd.com/read/29679926/peripheral-artery-disease-a-micro-rna-related-condition
#1
REVIEW
Georgia Vogiatzi, Evangelos Oikonomou, Spyridon Deftereos, Gerasimos Siasos, Dimitris Tousoulis
Peripheral artery disease (PAD) is a vascular problem of diffuse atherosclerosis and is a major cause of cardiovascular morbidity and mortality. Many studies have tried to gain insight into the molecular mechanisms involved in PAD. Lately, highly stable circulating small noncoding RNAs, microRNAs (miRNAs), seem to have disease-specific expression. Thus, miRNAs are emerging as new measurable diagnostic biomarkers and a start point for individualized treatment. To date, the association of miRNA regulation in angiogenesis and maintenance of vascular integrity in PAD has attracted little interest...
April 18, 2018: Current Opinion in Pharmacology
https://www.readbyqxmd.com/read/29679812/protective-role-of-nimbolide-against-chemotherapeutic-drug-hydroxyurea-induced-genetic-and-oxidative-damage-in-an-animal-model
#2
Md Fahim Ahmad, Mohd Owais Ansari, Sana Jameel, Ab Latif Wani, Nuzhat Parveen, Hifzur R Siddique, G G H A Shadab
Nimbolide is known to be an antioxidant found in neem plant. Hydroxyurea is a medication frequently used in sickle-cell disease, different cancers and HIV infection. The present study aimed to evaluate the adverse effect of HU and possible amelioration by nimbolide in Wistar rats. To test our hypothesis, we performed genotoxicity tests, biochemical assays, and histopathological studies. We observed that HU caused higher levels of genotoxicity in the treated animals. The observed genetic and oxidative damage might be due to the presence of reactive species as HU increased the level of the malondialdehyde-a biomarker of oxidative damage...
April 12, 2018: Environmental Toxicology and Pharmacology
https://www.readbyqxmd.com/read/29679800/synthetic-investigation-of-binary-ternary-cr-iii-hydroxycarboxylic-acid-aromatic-chelator-systems-structure-specific-influence-on-adipogenic-biomarkers-linked-to-insulin-mimesis
#3
O Tsave, C Gabriel, M Kafantari, M Yavropoulou, J G Yovos, C P Raptopoulou, V Psycharis, A Terzis, C Mateescu, A Salifoglou
In an attempt to understand the aqueous interactions of Cr(III) with low-molecular mass physiological ligands and examine its role as an adipogenic metallodrug agent in Diabetes mellitus II, the pH-specific synthesis in the binary-ternary Cr(III)-(HA = hydroxycarboxylic acid)-(N,N)-aromatic chelator (AC) (HA = 2-hydroxyethyl iminodiacetic acid/heidaH2 , quinic acid; AC = 1,10-phenanthroline/phen) systems was pursued, leading to four new crystalline compounds. All materials were characterized by elemental analysis, UV-Visible, FT-IR, and ESI-MS spectroscopy, cyclic voltammetry, and X-Ray crystallography...
February 10, 2018: Journal of Inorganic Biochemistry
https://www.readbyqxmd.com/read/29679757/molecular-characterization-of-cu-zn-sod-gene-in-asian-clam-corbicula-fluminea-and-mrna-expression-and-enzymatic-activity-modulation-induced-by-metals
#4
Xie Yanhai, Chen Hongbing, Zheng Shuangyan, Zhang Xiali, Mu Songniu
The copper/zinc superoxide dismutase (Cu/Zn SOD) could effectively eliminate reactive oxygen species (ROS). In this study, the cDNA sequence of Cu/Zn SOD from Corbicula fluminea (designated as CfCu/Zn SOD) was cloned by the rapid amplification of cDNA ends (RACE) approaches. The full-length cDNA of CfCu/Zn SOD was of 1288 bp, including a 465 bp ORF encoding a protein of 154 amino acids. Two SOD family signatures were identified in CfCu/Zn SOD amino acids sequence. Multiple sequence alignments indicated that CfCu/Zn SOD amino acid sequences exhibited high similarities to those of other species...
April 18, 2018: Gene
https://www.readbyqxmd.com/read/29679695/serial-nse-measurement-identifies-non-survivors-following-out-of-hospital-cardiac-arrest
#5
Kieran Gillick, Kieron Rooney
AIMS: Prognostication following out-of-hospital cardiac arrest (OHCA) remains challenging. A multimodal approach is favoured, including consideration of the biomarker neuron-specific enolase (NSE) (Sandroni et al., 2014). Our objective was to investigate the utility of serial NSE measurements and to determine an appropriate cut-off value for prediction of death before hospital discharge using data from our tertiary care centre. METHODS: Retrospective analysis of patients admitted to the critical care unit of a tertiary centre critical care unit in the UK following an out-of-hospital cardiac arrest...
April 18, 2018: Resuscitation
https://www.readbyqxmd.com/read/29679653/effects-of-selective-serotonin-reuptake-inhibitors-ssris-on-human-villous-trophoblasts-syncytialization
#6
Hélène Clabault, Denis Flipo, Jean Guibourdenche, Thierry Fournier, Thomas Sanderson, Cathy Vaillancourt
Selective serotonin-reuptake inhibitors (SSRIs) are the most commonly prescribed antidepressants during pregnancy. The human placenta is a highly specialized organ supporting normal growth and development of the fetus. Therefore, this study aims to analyze the effects of SSRIs on villous cytotrophoblasts cells, using BeWo cells and human placental trophoblast cells in primary culture. The SSRIs fluoxetine and its metabolite norfluoxetine, sertraline and venlafaxine did not affect BeWo cell proliferation and viability, nor the percentage of M30-positive (apoptotic) primary trophoblast cells...
April 18, 2018: Toxicology and Applied Pharmacology
https://www.readbyqxmd.com/read/29679639/decoding-fibrosis-mechanisms-and-translational-aspects
#7
Liliana Schaefer
Fibrosis, a complex process of abnormal tissue healing which inevitably leads to loss of physiological organ structure and function, is a world-wide leading cause of death. Despite a large body of research over the last two decades, antifibrotic approaches are mainly limited to organ replacement therapy generating high costs of medical care. In this translational issue, a unique group of basic and clinical researchers provide meaningful answers to a desperate call of society for effective antifibrotic treatments...
April 18, 2018: Matrix Biology: Journal of the International Society for Matrix Biology
https://www.readbyqxmd.com/read/29679626/microrna-expression-profile-in-plasma-from-type-1-diabetic-patients-case-control-study-and-bioinformatic-analysis
#8
Taís S Assmann, Mariana Recamonde-Mendoza, Márcia Puñales, Balduíno Tschiedel, Luís H Canani, Daisy Crispim
AIMS: To investigate a miRNA expression profile in plasma of type 1 diabetes (T1DM) patients and control subjects and analyze the putative pathways involved. METHODS: Expressions of 48 miRNAs were analyzed in plasma of 33 T1DM patients and 26 age-and-gender-matched controls using Stem-loop RT-PreAmp PCR and TaqMan Low Density Arrays (Thermo Fisher Scientific). Five dysregulated miRNAs were then chosen for validation in an independent sample of 27 T1DM patients and 14 controls, using RT-qPCR...
April 18, 2018: Diabetes Research and Clinical Practice
https://www.readbyqxmd.com/read/29679616/early-detection-of-diabetic-retinopathy
#9
REVIEW
Hamid Safi, Sare Safi, Ali Hafezi-Moghadam, Hamid Ahmadieh
Diabetic retinopathy (DR) is a primary cause of visual impairment worldwide. Diabetes mellitus may be associated with ophthalmoscopically nonvisible neurovascular damage that progresses before the first clinical signs of DR appear. Reduction of the inner neuroretinal layer thickness on macular optical coherence tomography (OCT), reduced contrast sensitivity primarily at low spatial frequencies, abnormal results in color vision and microperimetry tests, and a prolonged implicit time recorded by multifocal electroretinography have been proposed for detection of early functional and nonvisible structural neuroretinal changes...
April 18, 2018: Survey of Ophthalmology
https://www.readbyqxmd.com/read/29679612/protein-arginine-methyltransferase-5-promotes-lung-cancer-metastasis-via-the-epigenetic-regulation-of-mir-99-family-fgfr3-signaling
#10
Pengyu Jing, Nan Zhao, Mingxiang Ye, Yong Zhang, Zhipei Zhang, Jianyong Sun, Zhengxin Wang, Jian Zhang, Zhongping Gu
Protein arginine methyltransferase 5 (PRMT5) functions as a tumor initiator to regulate several cancer progressions, such as proliferation and apoptosis, by catalyzing the symmetrical dimethylation (me2s) of arginine residues within targeted molecules. However, the exact role of PRMT5-mediated metastasis in lung cancer is not fully understood. Here, we illustrated its potential effects in lung cancer metastasis in vivo and vitro. PRMT5 was frequently overexpressed in lung tumors, and its expression was positively related to tumor stages, lymphatic metastasis and poor outcome...
April 18, 2018: Cancer Letters
https://www.readbyqxmd.com/read/29679611/control-of-t-cell-effector-functions-by-mirnas
#11
Daniel P Inácio, Tiago Amado, Bruno Silva-Santos, Anita Q Gomes
The differentiation of effector T cells is a tightly regulated process that relies on the selective expression of lineage-defining master regulators that orchestrate unique transcriptional programs, including the production of distinct sets of effector cytokines. miRNAs are post-transcriptional regulators that are now viewed as critical players in these gene expression networks and help defining cell identity and function. This review summarises the role of individual miRNAs in the regulation of the differentiation of effector T cell subsets, including CD4+ T helper cells, cytotoxic CD8+ T cells and innate-like NKT cells...
April 18, 2018: Cancer Letters
https://www.readbyqxmd.com/read/29679574/evidence-of-demyelination-in-mild-cognitive-impairment-and-dementia-using-a-direct-and-specific-magnetic-resonance-imaging-measure-of-myelin-content
#12
Mustapha Bouhrara, David A Reiter, Christopher M Bergeron, Linda M Zukley, Luigi Ferrucci, Susan M Resnick, Richard G Spencer
INTRODUCTION: We investigated brain demyelination in aging, mild cognitive impairment (MCI), and dementia using magnetic resonance imaging of myelin. METHODS: Brains of young and old controls and old subjects with MCI, Alzheimer's disease, or vascular dementia were scanned using our recently developed myelin water fraction (MWF) mapping technique, which provides greatly improved accuracy over previous comparable methods. Maps of MWF, a direct and specific myelin measure, and relaxation times and magnetization transfer ratio, indirect and nonspecific measures, were constructed...
April 18, 2018: Alzheimer's & Dementia: the Journal of the Alzheimer's Association
https://www.readbyqxmd.com/read/29679564/frequencies-and-expression-levels-of-programmed-death-ligand-1-pd-l1-in-circulating-tumor-rna-ctrna-in-various-cancer-types
#13
Toshiyuki Ishiba, Andreas-Claudius Hoffmann, Joshua Usher, Yahya Elshimali, Todd Sturdevant, Mai Dang, Yolanda Jaimes, Rama Tyagi, Ronald Gonzalez, Mary Grino, Jacek K Pinski, Afsaneh Barzi, Luis E Raez, Wilfried E Eberhardt, Dirk Theegarten, Heinz-Josef Lenz, Hiroyuki Uetake, Peter V Danenberg, Kathleen Danenberg
BACKGROUND: Precision medicine and prediction of therapeutic response requires monitoring potential biomarkers before and after treatment. Liquid biopsies provide noninvasive prognostic markers such as circulating tumor DNA and RNA. Circulating tumor RNA (ctRNA) in blood is also used to identify mutations in genes of interest, but additionally, provides information about relative expression levels of important genes. In this study, we analyzed PD-L1 expression in ctRNA isolated from various cancer types...
April 18, 2018: Biochemical and Biophysical Research Communications
https://www.readbyqxmd.com/read/29679555/mass-spectrometric-measurement-of-urinary-kynurenine-to-tryptophan-ratio-in-children-with-and-without-urinary-tract-infection
#14
Melanie L Yarbrough, Kelleigh E Briden, John V Mitsios, Annette L Weindel, Cindy M Terrill, David A Hunstad, Dennis J Dietzen
BACKGROUND: Indoleamine-2,3-dioxygenase (IDO) catalyzes the first step of tryptophan (Trp) catabolism, yielding kynurenine (Kyn) metabolites. The kynurenine-to-tryptophan (K/T) ratio is used as a surrogate for biological IDO enzyme activity. IDO expression is increased during Escherichia coli urinary tract infection (UTI). Thus, our objective was to develop a method for measurement of Kyn/Trp ratio in human blood and urine and evaluate its use as a biomarker of UTI. METHODS: A mass spectrometric method was developed to measure Trp and Kyn in serum and urine specimens...
April 18, 2018: Clinical Biochemistry
https://www.readbyqxmd.com/read/29679470/molecular-progression-to-cervical-precancer-epigenetic-switch-or-sequential-model
#15
Belinda Nedjai, Caroline Reuter, Amar Ahmad, Rawinder Banwait, Rhian Warman, James Carton, Sabrina Boer, Jack Cuzick, Attila Lorincz
The evolution of precancerous cervical lesions is poorly understood. A widely held model of cervical intraepithelial neoplasia grade 3 (CIN3) development is sequential progression from normal through CIN1 and CIN2 to CIN3. Another hypothesis, the "molecular switch" model, postulates that CIN3 can evolve directly from human papillomavirus (HPV)-infected normal epithelium without progressing through CIN1 and CIN2. To shed light on this process, we compared DNA methylation of selected human biomarkers and HPV types in two groups of CIN1: CIN1 that were near or adjacent to CIN3 (adjacent-CIN1) and CIN1 that were the principal lesions with no CIN3 detected (principal-CIN1)...
April 21, 2018: International Journal of Cancer. Journal International du Cancer
https://www.readbyqxmd.com/read/29679467/salidroside-protects-against-advanced-glycation-end-products-induced-vascular-endothelial-dysfunction
#16
Peng Zhang, Yuanmin Li, Rong Guo, Wangfu Zang
BACKGROUND Salidroside, the major active compound in Rhodiola, has been reported to provide beneficial effects on cardiovascular diseases, but its effects on diabetes-induced vascular endothelial dysfunction are less known. Here, we examined the protective effects of salidroside on endothelial function in diabetes and explored the potential underlying mechanism. MATERIAL AND METHODS First, we assessed the endothelium-dependent relaxation response to acetylcholine, with or without salidroside treatment, in aortas isolated from Sprague-Dawley rats...
April 21, 2018: Medical Science Monitor: International Medical Journal of Experimental and Clinical Research
https://www.readbyqxmd.com/read/29679453/simultaneous-analysis-of-multiple-urinary-biomarkers-for-the-evaluation-of-oxidative-stress-by-automated-on-line-in-tube-solid-phase-microextraction-coupled-with-negative-positive-ion-switching-mode-lc-ms-ms
#17
Akihiro Saito, Mariko Hamano, Hiroyuki Kataoka
This study described an automated on-line method for the simultaneous determination of 8-isoprostane, 8-hydroxy-2'-deoxyguanosine, and 3-nitro-l-tyrosine in human urine. The method involves in-tube solid-phase microextraction using a Carboxen 1006 PLOT capillary column as an extraction device, followed by liquid chromatography with tandem mass spectrometry using a CX column and detection in the negative/positive switching ion-mode by multiple reaction monitoring. Using their stable isotope-labeled internal standards, each of these oxidative stress biomarkers showed good linearity from 0...
April 20, 2018: Journal of Separation Science
https://www.readbyqxmd.com/read/29679407/longitudinal-urinary-metabolomic-profiling-reveals-metabolites-for-asthma-development-in-early-childhood
#18
Chih-Yung Chiu, Gigin Lin, Mei-Ling Cheng, Meng-Han Chiang, Ming-Han Tsai, Kuan-Wen Su, Man-Chin Hua, Sui-Ling Liao, Shen-Hao Lai, Tsung-Chieh Yao, Kuo-Wei Yeh, Jing-Long Huang
BACKGROUND: Several metabolites and altered metabolic pathways have been reported to be associated with asthma. However, longitudinal analysis of the dynamics of metabolites contributing to the development of asthma has not yet been fully clarified. METHODS: We sought to identify the metabolic mechanisms underlying asthma development in early childhood. Thirty children with asthma and paired healthy controls from a prospective birth cohort were enrolled. Time-series analysis of urinary metabolites collected at ages 1, 2, 3, and 4 years were assessed using 1 H-nuclear magnetic resonance (NMR) spectroscopy coupled with partial least-squares discriminant analysis (PLS-DA)...
April 21, 2018: Pediatric Allergy and Immunology
https://www.readbyqxmd.com/read/29679371/fitting-the-epigenome-into-the-picture-methylation-classification-for-paediatric-brain-tumours
#19
EDITORIAL
J A Cotter, A R Judkins
Meaningful classification of paediatric brain tumours has been a topic of revived discussion in the current era of molecular analysis. In recent years, we have seen the practice of diagnostic neuropathology not only incorporate routine biomarker interpretation (e.g. INI1/SMARCB1 and BRAF V600E immunohistochemistry), but also extend its reach into the molecular pathology laboratory. Next-generation sequencing, fusion analysis, and copy number profiling are now commonly-employed diagnostic tools, particularly in histologically challenging or clinically difficult cases...
April 20, 2018: Neuropathology and Applied Neurobiology
https://www.readbyqxmd.com/read/29679261/accumulation-of-mitochondrial-dna-common-deletion-since-the-preataxic-stage-of-machado-joseph-disease
#20
Mafalda Raposo, Amanda Ramos, Cristina Santos, Nadiya Kazachkova, Balbina Teixeira, Conceição Bettencourt, Manuela Lima
Molecular alterations reflecting pathophysiologic changes thought to occur many years before the clinical onset of Machado-Joseph disease (MJD)/spinocerebellar ataxia type 3 (SCA3), a late-onset polyglutamine disorder, remain unidentified. The absence of molecular biomarkers hampers clinical trials, which lack sensitive measures of disease progression, preventing the identification of events occurring prior to clinical onset. Our aim was to analyse the mtDNA content and the amount of the common deletion (m...
April 21, 2018: Molecular Neurobiology
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