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https://www.readbyqxmd.com/read/28222524/a-combination-of-resveratrol-and-curcumin-is-effective-against-aluminum-chloride-induced-neuroinflammation-in-rats
#1
Amira Zaky, Ahmad Bassiouny, Mahitab Farghaly, Bassma M El-Sabaa
BACKGROUND: Experimental studies have demonstrated that aluminum is an environmental toxin that induces neuroinflammation and the development of Alzheimer's disease. OBJECTIVE: In this report, we investigated the beneficial effect of a combination of resveratrol and curcumin to reduce aluminum-induced neuroinflammation. METHOD: We employed both an in vivo model of aluminum-induced neuroinflammation and an in vitro aluminum stimulated cultured PC-12 cells...
February 7, 2017: Journal of Alzheimer's Disease: JAD
https://www.readbyqxmd.com/read/28219659/dementia-like-pathology-in-type-2-diabetes-a-novel-microrna-mechanism
#2
Anuradha Kalani, Pankaj Chaturvedi, Claudio Maldonado, Philip Bauer, Irving G Joshua, Suresh C Tyagi, Neetu Tyagi
Although type-2 diabetes (T2D) has been reported to increase the risk of cognitive dysfunction and dementia, the underlying mechanisms remain unclear. Dementia-like pathology is attributed to the accumulation of cellular prion protein (PrP(c)) which plays a role in cognitive dysfunction. However, its involvement and regulation in diabetic dementia-like pathology is not well understood. Using T2D db/db (leptin receptor knockout) mice subjected to object recognition and Y-maze behavioral tests, we determined that short-term memory was compromised and that the mice displayed abrupt spontaneous behaviour compared to db/m control mice...
February 17, 2017: Molecular and Cellular Neurosciences
https://www.readbyqxmd.com/read/28212627/genome-wide-identification-of-direct-hbx-genomic-targets
#3
Francesca Guerrieri, Laura Belloni, Daniel D'Andrea, Natalia Pediconi, Loredana Le Pera, Barbara Testoni, Cecilia Scisciani, Oceane Floriot, Fabien Zoulim, Anna Tramontano, Massimo Levrero
BACKGROUND: The Hepatitis B Virus (HBV) HBx regulatory protein is required for HBV replication and involved in HBV-related carcinogenesis. HBx interacts with chromatin modifying enzymes and transcription factors to modulate histone post-translational modifications and to regulate viral cccDNA transcription and cellular gene expression. Aiming to identify genes and non-coding RNAs (ncRNAs) directly targeted by HBx, we performed a chromatin immunoprecipitation sequencing (ChIP-Seq) to analyse HBV recruitment on host cell chromatin in cells replicating HBV...
February 17, 2017: BMC Genomics
https://www.readbyqxmd.com/read/28212562/overexpression-of-mir-29a-reduces-the-oncogenic-properties-of-glioblastoma-stem-cells-by-downregulating-quaking-gene-isoform-6
#4
Zhuo Xi, Ping Wang, Yixue Xue, Chao Shang, Xiaobai Liu, Jun Ma, Zhiqing Li, Zhen Li, Min Bao, Yunhui Liu
Glioblastoma is the most common type of malignant primary brain tumor and has high recurrence and lethality rates. Glioblastoma stem cells (GSCs), a subpopulation of glioblastoma cells, may promote rapid tumor recurrence and therapy resistance. Because altered microRNA (miR) expression in GSCs may lead to glioblastoma progression, we assessed the effects of miR-29a expression on the oncogenic behavior of GSCs. MiR-29a expression was lower in GSCs than non-GSCs, and overexpression of miR-29a in GSCs inhibited cell proliferation, migration and invasion, but promoted apoptosis...
February 15, 2017: Oncotarget
https://www.readbyqxmd.com/read/28211484/regulation-of-mrna-splicing-by-mecp2-via-epigenetic-modifications-in-the-brain
#5
Tian-Lin Cheng, Jingqi Chen, Huida Wan, Bin Tang, Weidong Tian, Lujian Liao, Zilong Qiu
Mutations of X-linked gene Methyl CpG binding protein 2 (MECP2) are the major causes of Rett syndrome (RTT), a severe neurodevelopmental disorder. Duplications of MECP2-containing genomic segments lead to severe autistic symptoms in human. MECP2-coding protein methyl-CpG-binding protein 2 (MeCP2) is involved in transcription regulation, microRNA processing and mRNA splicing. However, molecular mechanisms underlying the involvement of MeCP2 in mRNA splicing in neurons remain largely elusive. In this work we found that the majority of MeCP2-associated proteins are involved in mRNA splicing using mass spectrometry analysis with multiple samples from Mecp2-null rat brain, mouse primary neuron and human cell lines...
February 17, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28210782/toll-like-receptor-signaling-and-stages-of-addiction
#6
REVIEW
Fulton T Crews, T Jordan Walter, Leon G Coleman, Ryan P Vetreno
BACKGROUND: Athina Markou and her colleagues discovered persistent changes in adult behavior following adolescent exposure to ethanol or nicotine consistent with increased risk for developing addiction. Building on Dr. Markou's important work and that of others in the field, researchers at the Bowles Center for Alcohol Studies have found that persistent changes in behavior following adolescent stress or alcohol exposure may be linked to induction of immune signaling in brain. AIM: This study aims to illuminate the critical interrelationship of the innate immune system (e...
February 17, 2017: Psychopharmacology
https://www.readbyqxmd.com/read/28209997/antisense-mir-132-blockade-via-the-ache-r-splice-variant-mitigates-cortical-inflammation
#7
Nibha Mishra, Lyndon Friedson, Geula Hanin, Uriya Bekenstein, Meshi Volovich, Estelle R Bennett, David S Greenberg, Hermona Soreq
MicroRNA (miR)-132 brain-to-body messages suppress inflammation by targeting acetylcholinesterase (AChE), but the target specificity of 3'-AChE splice variants and the signaling pathways involved remain unknown. Using surface plasmon resonance (SPR), we identified preferential miR-132 targeting of soluble AChE-R over synaptic-bound AChE-S, potentiating miR-132-mediated brain and body cholinergic suppression of pro-inflammatory cytokines. Inversely, bacterial lipopolysaccharide (LPS) reduced multiple miR-132 targets, suppressed AChE-S more than AChE-R and elevated inflammatory hallmarks...
February 17, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28202414/lncrna-tug1-sponges-microrna-9-to-promote-neurons-apoptosis-by-up-regulated-bcl2l11-under-ischemia
#8
Shengcai Chen, Mengdie Wang, Hang Yang, Ling Mao, Quanwei He, Huijuan Jin, Zi-Ming Ye, Xue-Ying Luo, Yuan-Peng Xia, Bo Hu
Emerging studies have illustrated that LncRNAs TUG1 play critical roles in multiple biologic processes. However, the LncRNA TUG1 expression and function in ischemic stroke have not been reported yet. In this study, we found that LncRNA TUG1 expression was significantly up-regulated in brain ischemic penumbra from rat middle carotid artery occlusion (MCAO) model, while similar results were also observed in cultured neurons under oxygen-glucose deprivation (OGD) insult. Knockdown of TUG1 decreased the ratio of apoptotic cells and promoted cells survival in vitro, which may be regulated by the elevated miRNA-9 expression and decreased Bcl2l11 protein...
February 12, 2017: Biochemical and Biophysical Research Communications
https://www.readbyqxmd.com/read/28196914/the-host-microrna-mir-301a-blocks-the-irf1-mediated-neuronal-innate-immune-response-to-japanese-encephalitis-virus-infection
#9
Bibhabasu Hazra, Kanhaiya Lal Kumawat, Anirban Basu
Effective recognition of viral components and the subsequent stimulation of the production of type I interferons (IFNs) is crucial for the induction of host antiviral immunity. The failure of the host to efficiently produce type I IFNs in response to infection by the Japanese encephalitis virus (JEV) is linked with an increased probability for the disease to become lethal. JEV is a neurotropic virus of the Flaviviridae family that causes encephalitis in humans. JEV infection is regulated by several host factors, including microRNAs, which are conserved noncoding RNAs that participate in various physiological and pathological processes...
February 14, 2017: Science Signaling
https://www.readbyqxmd.com/read/28193507/identification-of-organ-tissue-types-and-skin-from-forensic-samples-by-microrna-expression-analysis
#10
Eva Sauer, Antje Extra, Philipp Cachée, Cornelius Courts
The identification of organ tissues in traces recovered from scenes and objects with regard to violent crimes involving serious injuries can be of considerable relevance in forensic investigations. Molecular genetic approaches are provably superior to histological and immunological assays in characterizing organ tissues, and micro-RNAs (miRNAs), due to their cell type specific expression patterns and stability against degradation, emerged as a promising molecular species for forensic analyses, with a range of tried and tested indicative markers...
February 5, 2017: Forensic Science International. Genetics
https://www.readbyqxmd.com/read/28193224/microrna-mir-29-controls-a-compensatory-response-to-limit-neuronal-iron-accumulation-during-adult-life-and-aging
#11
Roberto Ripa, Luca Dolfi, Marco Terrigno, Luca Pandolfini, Aurora Savino, Valeria Arcucci, Marco Groth, Eva Terzibasi Tozzini, Mario Baumgart, Alessandro Cellerino
BACKGROUND: A widespread modulation of gene expression occurs in the aging brain, but little is known as to the upstream drivers of these changes. MicroRNAs emerged as fine regulators of gene expression in many biological contexts and they are modulated by age. MicroRNAs may therefore be part of the upstream drivers of the global gene expression modulation correlated with aging and aging-related phenotypes. RESULTS: Here, we show that microRNA-29 (miR-29) is induced during aging in short-lived turquoise killifish brain and genetic antagonism of its function induces a gene-expression signature typical of aging...
February 13, 2017: BMC Biology
https://www.readbyqxmd.com/read/28192116/prrt2-inhibits-the-proliferation-of-glioma-cells-by-modulating-unfolded-protein-response-pathway
#12
Guanghui Bi, Jingfeng Yan, Shuzhen Sun
Accumulating studies reported mutations in the gene encoding the proline-rich transmembrane protein 2 (PRRT2) to be causative for several paroxysmal neurological disorders, including paroxysmal kinesigenic dyskinesia (PKD), PKD combined with infantile seizures (ICCA), and benign familial infantile seizures (BFIS). However, the impact of PRRT2 in tumorigenesis is not known. Based on a large-scale data analysis, we found that PRRT2 was down-regulated in glioma tumor tissues compared with normal brain tissue. Dysregulation of PRRT2 was not induced by mutation, copy number variation and epigenetic modification, but modulated by microRNA-30a-5p...
February 10, 2017: Biochemical and Biophysical Research Communications
https://www.readbyqxmd.com/read/28192093/the-roles-of-hippocampal-micrornas-in-response-to-acute-postnatal-exposure-to-di-2-ethylhexyl-phthalate-in-female-and-male-rats
#13
Bryan E Luu, Stuart R Green, Christine L Childers, Matthew R Holahan, Kenneth B Storey
Previous studies have shown that di(2-ethylhexyl) phthalate (DEHP) exposure impairs the normal development of pre- and post-synaptic elements of the male, but not female, rat hippocampus. While males seem to be vulnerable to the neurodevelopmental deficits resulting from DEHP exposure, females appear to show a protective response. The purpose of the present study was to characterize hippocampal microRNAs in female and male rats exposed to DEHP to assess whether any patterns emerged that would be consistent with vulnerability in males and resilience in females...
February 10, 2017: Neurotoxicology
https://www.readbyqxmd.com/read/28188250/mir30-galnt1-2-axis-mediated-glycosylation-contributes-to-the-increased-secretion-of-inactive-human-prohormone-for-brain-natriuretic-peptide-probnp-from-failing-hearts
#14
Yasuaki Nakagawa, Toshio Nishikimi, Koichiro Kuwahara, Aoi Fujishima, Shogo Oka, Takayoshi Tsutamoto, Hideyuki Kinoshita, Kazuhiro Nakao, Kosai Cho, Hideaki Inazumi, Hiroyuki Okamoto, Motohiro Nishida, Takao Kato, Hiroyuki Fukushima, Jun K Yamashita, Wino J Wijnen, Esther E Creemers, Kenji Kangawa, Naoto Minamino, Kazuwa Nakao, Takeshi Kimura
BACKGROUND: Recent studies have shown that plasma levels of the biologically inactive prohormone for brain natriuretic peptide (proBNP) are increased in patients with heart failure. This can contribute to a reduction in the effectiveness of circulating BNP and exacerbate heart failure progression. The precise mechanisms governing the increase in proBNP remain unclear, however. METHODS AND RESULTS: We used our recently developed, highly sensitive human proBNP assay system to investigate the mechanisms underlying the increase in plasma proBNP levels...
February 10, 2017: Journal of the American Heart Association
https://www.readbyqxmd.com/read/28188219/distinct-effects-of-mir-210-reduction-on-neurogenesis-increased-neuronal-survival-of-inflammation-but-reduced-proliferation-associated-with-mitochondrial-enhancement
#15
Ludmila A Voloboueva, Xiaoyun Sun, Lijun Xu, Yi-Bing Ouyang, Rona G Giffard
Neurogenesis is essential to brain development, and plays a central role in the response to brain injury. Stroke and head trauma stimulate proliferation of endogenous neural stem cells (NSC). However, the survival of young neurons is sharply reduced by post-injury inflammation. Cellular mitochondria are critical to successful neurogenesis and are a major target of inflammatory injury. Mitochondrial protection was shown to improve survival of young neurons. This study tested whether reducing cellular microRNA-210 (miR-210) would enhance mitochondrial function and improve survival of young murine neurons under inflammatory conditions...
February 10, 2017: Journal of Neuroscience: the Official Journal of the Society for Neuroscience
https://www.readbyqxmd.com/read/28186095/the-role-of-microrna-expression-in-cortical-development-during-conversion-to-psychosis
#16
Amanda B Zheutlin, Clark D Jeffries, Diana O Perkins, Yoonho Chung, Adam M Chekroud, Jean Addington, Carrie E Bearden, Kristin S Cadenhead, Barbara A Cornblatt, Daniel H Mathalon, Thomas H McGlashan, Larry J Seidman, Elaine F Walker, Scott W Woods, Ming Tsuang, Tyrone D Cannon
In a recent report of the North American Prodrome Longitudinal Study (NAPLS), clinical high-risk individuals who converted to psychosis showed a steeper rate of cortical gray matter reduction compared with non-converters and healthy controls, and the rate of cortical thinning was correlated with levels of pro-inflammatory cytokines at baseline. These findings suggest a critical role for microglia, the resident macrophages in the brain, in perturbations of cortical maturation processes associated with onset of psychosis...
February 10, 2017: Neuropsychopharmacology: Official Publication of the American College of Neuropsychopharmacology
https://www.readbyqxmd.com/read/28184912/interaction-between-transcription-factors-pax6-pax6-5a-and-specific-members-of-mir-183-96-182-cluster-may-contribute-to-glioma-progression-in-glioblastoma-cell-lines
#17
Evangelos Pavlakis, Anton B Tonchev, Ara Kaprelyan, Yavor Enchev, Anastassia Stoykova
A misbalance between proliferation and differentiation of neural stem cells in niches for adult brain neurogenesis is a key mechanism in glioma pathogenesis. In the adult brain, the expression of Pax6 marks stem cells in the forebrain neurogenic niche. We analyzed the expression profile of the two active in vertebrates Pax6 isoforms, Pax6 and Pax6-5a, along with the expression of microRNA cluster miR-183-96-182 in a large set of glioma patient specimens and glioma cell lines which showed opposite expression level, low and high, respectively, with the progression of tumor malignancy...
March 2017: Oncology Reports
https://www.readbyqxmd.com/read/28184278/possible-sexually-dimorphic-role-of-mirna-and-other-sncrna-in-asd-brain
#18
Cynthia M Schumann, Frank R Sharp, Bradley P Ander, Boryana Stamova
BACKGROUND: Autism spectrum disorder (ASD) is sexually dimorphic in brain structure, genetics, and behaviors. In studies of brain tissue, the age of the population is clearly a factor in interpreting study outcome, yet sex is rarely considered. To begin to address this issue, we extend our previously published microarray analyses to examine expression of small noncoding RNAs (sncRNAs), including microRNAs (miRNAs), in ASD and in the control temporal cortex in males and females. Predicted miRNA targets were identified as well as the pathways they overpopulate...
2017: Molecular Autism
https://www.readbyqxmd.com/read/28181149/genome-wide-sequencing-reveals-micrornas-downregulated-in-cerebral-cavernous-malformations
#19
Souvik Kar, Kiran Kumar Bali, Arpita Baisantry, Robert Geffers, Amir Samii, Helmut Bertalanffy
Cerebral cavernous malformations (CCM) are vascular lesions associated with loss-of-function mutations in one of the three genes encoding KRIT1 (CCM1), CCM2, and PDCD10. Recent understanding of the molecular mechanisms that lead to CCM development is limited. The role of microRNAs (miRNAs) has been demonstrated in vascular pathologies resulting in loss of tight junction proteins, increased vascular permeability and endothelial cell dysfunction. Since the relevance of miRNAs in CCM pathophysiology has not been elucidated, the primary aim of the study was to identify the miRNA-mRNA expression network associated with CCM...
February 8, 2017: Journal of Molecular Neuroscience: MN
https://www.readbyqxmd.com/read/28178667/anti-gd2-ch14-18-cho-coated-nanoparticles-mediate-glioblastoma-gbm-specific-delivery-of-the-aromatase-inhibitor-letrozole-reducing-proliferation-migration-and-chemoresistance-in-patient-derived-gbm-tumor-cells
#20
Amanda Tivnan, Tatjana Heilinger, Joanne Ramsey, Gemma O'Connor, Jenny Pokorny, Jann Sarkaria, Brett Stringer, Bryan Day, Andrew Boyd, Ella Kim, Holger Lode, Sally-Ann Cryan, Jochen Prehn
Aromatase is a critical enzyme in the irreversible conversion of androgens to oestrogens, with inhibition used clinically in hormone-dependent malignancies. We tested the hypothesis that targeted aromatase inhibition in an aggressive brain cancer called glioblastoma (GBM) may represent a new treatment strategy. In this study, aromatase inhibition was achieved using third generation inhibitor, Letrozole, encapsulated within the core of biodegradable poly lactic-co-glycolic acid (PLGA) nanoparticles (NPs). PLGA-NPs were conjugated to human/mouse chimeric anti-GD2 antibody ch14...
February 3, 2017: Oncotarget
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