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Biomarker microRNA

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https://www.readbyqxmd.com/read/28934394/microrna-455-3p-as-a-potential-peripheral-biomarker-for-alzheimer-s-disease
#1
Subodh Kumar, Murali Vijayan, P Hemachandra Reddy
The purpose of our study was to identify microRNAs (miRNAs) as early detectable peripheral biomarkers in Alzheimer's disease (AD). To achieve our objective, we assessed miRNAs in serum samples from AD patients and Mild cognitive impairment (MCI) subjects relative to healthy controls. We used Affymetrix microarray analysis and validated differentially expressed miRNAs using qRT-PCR. We further validated miRNA data using AD postmortem brains, amyloid precursor protein transgenic mice and AD cell lines. We identified a gradual upregulation of four miRNAs: miR-455-3p, miR-4668-5p, miR-3613-3p and miR-4674...
October 1, 2017: Human Molecular Genetics
https://www.readbyqxmd.com/read/28934131/tissue-based-micrornas-as-predictors-of-biochemical-recurrence-after-radical-prostatectomy-what-can-we-learn-from-past-studies
#2
REVIEW
Zhongwei Zhao, Carsten Stephan, Sabine Weickmann, Monika Jung, Glen Kristiansen, Klaus Jung
With the increasing understanding of the molecular mechanism of the microRNAs (miRNAs) in prostate cancer (PCa), the predictive potential of miRNAs has received more attention by clinicians and laboratory scientists. Compared with the traditional prognostic tools based on clinicopathological variables, including the prostate-specific antigen, miRNAs may be helpful novel molecular biomarkers of biochemical recurrence for a more accurate risk stratification of PCa patients after radical prostatectomy and may contribute to personalized treatment...
September 21, 2017: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/28933293/micrornas-in-atrial-fibrillation
#3
Alexandros Briasoulis, Shikha Sharma, Tesfaye Telila, Sagar Mallikethi-Reddy, Nikolaos Papageorgiou, Evangelos Oikonomou, Dimitris Tousoulis
microRNAs (miRNAs) are small non-coding RNAs, involved in regulation of post-transcriptional gene expression. They exert key role not only in physiology and normal development of the cardiovascular system but also in cardiovascular disease development and progression. Recent animal and human studies of tissue specific miRNAs have suggested a role in structural and electrical remodeling in atrial fibrillation (AF). Their emerging role as biomarkers and potential therapeutic targets in patients with AF is discussed in this review...
September 20, 2017: Current Medicinal Chemistry
https://www.readbyqxmd.com/read/28932769/microrna-expression-in-a-phosphaturic-mesenchymal-tumour
#4
Darrell Green, Irina Mohorianu, Isabelle Piec, Jeremy Turner, Clare Beadsmoore, Andoni Toms, Richard Ball, John Nolan, Iain McNamara, Tamas Dalmay, William D Fraser
Phosphaturic mesenchymal tumours are a heterogeneous set of bone and soft tissue neoplasms that can cause a number of paraneoplastic syndromes such as tumour induced osteomalacia. The term phosphaturic comes from the common finding that these tumours secrete high levels of fibroblast growth factor 23 which causes renal phosphate wasting leading to hypophosphatemia. Phosphaturic mesenchymal tumours are rare and diagnosis is difficult. A very active 68 year old male presented with bone pain and muscle weakness...
December 2017: Bone Reports
https://www.readbyqxmd.com/read/28931826/microrna-profiling-study-reveals-mir-150-in-association-with-metastasis-in-nasopharyngeal-carcinoma
#5
Patrick Ying-Kit Yue, Wai-Yan Ha, Chi-Chiu Lau, Florence Man-Fung Cheung, Anne Wing-Mui Lee, Wai-Tong Ng, Roger Kai-Cheong Ngan, Chun-Chung Yau, Dora Lai-Wan Kwong, Hong-Lok Lung, Nai-Ki Mak, Maria Li Lung, Ricky Ngok-Shun Wong
MicroRNAs (miRNAs) are small non-coding RNAs that play a crucial role in pathogenesis of human cancers. Several miRNAs have been shown to involve in nasopharyngeal carcinoma (NPC) pathogenesis through alteration of gene networks. A global view of the miRNA expression profile of clinical specimens would be the best way to screen out the possible miRNA candidates that may be involved in disease pathogenesis. In this study, we investigated the expression profiles of miRNA in formalin-fixed paraffin-embedded tissues from patients with undifferentiated NPC versus non-NPC controls using a miRNA real-time PCR platform, which covered a total of 95 cancer-related miRNAs...
September 20, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28931080/low-serum-level-of-mir-485-3p-predicts-poor-survival-in-patients-with-glioblastoma
#6
Zhi-Qiang Wang, Mei-Yin Zhang, Mei-Ling Deng, Nuo-Qing Weng, Hui-Yun Wang, Shao-Xiong Wu
MicroRNAs (miRNAs) are short noncoding RNAs that play critical roles in human malignancies and can be used as biomarkers for cancer. Until now, a number of biomarkers for prognosis of glioblastoma (GBM) have been reported in tumor tissues but only a few biomarkers in circulating fluid. Using a custom microarray, we previously identified 19 differentially expressed miRNAs in serum of patients with GBM. In this study, we investigated whether 3 of the 19 miRNAs in serum could be used as prognostic biomarkers for patients with GBM...
2017: PloS One
https://www.readbyqxmd.com/read/28929579/in-situ-biosensor-for-detection-mirna-in-living-cells-based-on-carbon-nitride-nanosheets-with-catalytic-hairpin-assembly-amplification
#7
Xianjiu Liao, Liqing Li, Jianbin Pan, Tingting Peng, Bin Ge, Qianli Tang
In this study, an ultrasensitive fluorescence turn-on assay for in situ sensing of intracellular microRNA (miRNA) was developed utilizing a carbon nitride nanosheet (CNNS) and a catalytic hairpin assembly (CHA). The CHA showed favourable signal amplification for low-level biomarkers, and CNNS was an excellent candidate as a fluorescence quencher and gene vector. Moreover, the hairpin DNA of CHA could be adsorbed onto the surface of CNNS. An enzyme-free fluorescence biosensor for ultrasensitive sensing of intracellular miRNA in cells based on CHA and CNNS was designed...
September 19, 2017: Luminescence: the Journal of Biological and Chemical Luminescence
https://www.readbyqxmd.com/read/28927412/analysis-of-microrna-mirna-expression-profiles-reveals-11-key-biomarkers-associated-with-non-small-cell-lung-cancer
#8
Ke Wang, Mingwei Chen, Wei Wu
BACKGROUND: Non-small cell lung cancer (NSCLC) accounts for more than 85% of lung cancer cases which cause most of cancer-related deaths globally. However, the results vary largely in different studies due to different platforms and sample sizes. Here, we aim to identify the key miRNAs in the carcinogenesis of NSCLC that might be potential biomarkers for this cancer. METHODS: Meta-analysis was performed on miRNA profile using seven datasets of NSCLC studies. Furthermore, we predicted and investigated the functions of genes regulated by key miRNAs...
September 19, 2017: World Journal of Surgical Oncology
https://www.readbyqxmd.com/read/28927149/microrna-552-promotes-tumor-cell-proliferation-and-migration-by-directly-targeting-dach1-via-the-wnt-%C3%AE-catenin-signaling-pathway-in-colorectal-cancer
#9
Jia Cao, Xiu-Rui Yan, Ting Liu, Xue-Bo Han, Jing-Jing Yu, Shi-Hai Liu, Li-Bin Wang
The purpose of the present study was to analyze the crucial role of microRNAs (miRNAs/miRs) involved in the proliferation and migration of colorectal cancer (CRC) and to investigate their underlying mechanisms. The present study discusses the expression and function of miR-552 in CRC. The expression level of miR-552 in CRC cells and tissues was observed, and it was suggested that the high expression of miR-552 accelerated the proliferation and migration of CRC cells in vitro. Notably, a result of the present study was that the cell fate determination factor Dachshund family transcription factor 1 (DACH1) was identified as a direct target of miR-552...
September 2017: Oncology Letters
https://www.readbyqxmd.com/read/28927114/microrna-383-5p-acts-as-a-prognostic-marker-and-inhibitor-of-cell-proliferation-in-lung-adenocarcinoma-by-cancerous-inhibitor-of-protein-phosphatase-2a
#10
Shasha Zhao, Xinyuan Gao, Shuzhi Zang, Yunxia Li, Xianjun Feng, Xiaomei Yuan
Lung cancer is the leading cause of cancer-associated mortality worldwide. MicroRNAs (miRNAs/miRs) serve a role in the occurrence and development of lung cancer. The aim of the present study was to analyze the expression and function of the proliferation-associated miR-383-5p in lung adenocarcinoma (LAC). Samples of human LAC and matched adjacent normal lung tissues were surgically removed, and miR-383-5p expression and the pathological characteristics of lung adenocarcinoma were investigated. The present study revealed that miR-383-5p expression level was significantly decreased in LAC tissues and its expression levels were markedly associated with tumor size and differentiation...
September 2017: Oncology Letters
https://www.readbyqxmd.com/read/28927049/a-prognostic-model-for-lung-adenocarcinoma-patient-survival-with-a-focus-on-four-mirnas
#11
Xianqiu Li, Zhaoling An, Peihui Li, Haihua Liu
There is currently no effective biomarker for determining the survival of patients with lung adenocarcinoma. The purpose of the present study was to construct a prognostic survival model using microRNA (miRNA) expression data from patients with lung adenocarcinoma. miRNA data were obtained from The Cancer Genome Atlas, and patients with lung adenocarcinoma were divided into either the training or validation set based on the random allocation principle. The prognostic model focusing on miRNA was constructed, and patients were divided into high-risk or low-risk groups as per the scores, to assess their survival time...
September 2017: Oncology Letters
https://www.readbyqxmd.com/read/28926935/identification-of-circulating-mirnas-differentially-regulated-by-opioid-treatment
#12
Kaoru Toyama, Naoki Kiyosawa, Kenji Watanabe, Hitoshi Ishizuka
Emerging evidence demonstrates functional contributions of microRNAs (miRNAs) to μ-opioid receptor (MOR) signaling, but the information so far has been mostly limited to their intracellular regulatory mechanisms. The present study aimed to investigate changes in plasma miRNA profiles elicited by opioid treatment in blood samples collected from clinical studies. Healthy male subjects were orally administered with hydromorphone or oxycodone and blood samples were collected at a specified time after the drug treatment...
September 16, 2017: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/28925938/circulating-micrornas-and-bioinformatics-tools-to-discover-novel-diagnostic-biomarkers-of-pediatric-diseases
#13
REVIEW
Antonella Baldassarre, Cristina Felli, Giorgio Prantera, Andrea Masotti
MicroRNAs (miRNAs) are small noncoding RNAs that regulate gene expression at the post-transcriptional level. Current studies have shown that miRNAs are also present in extracellular spaces, packaged into various membrane-bound vesicles, or associated with RNA-binding proteins. Circulating miRNAs are highly stable and can act as intercellular messengers to affect many physiological processes. MicroRNAs circulating in body fluids have generated strong interest in their potential use as clinical biomarkers. In fact, their remarkable stability and the relative ease of detection make circulating miRNAs ideal tools for rapid and non-invasive diagnosis...
September 19, 2017: Genes
https://www.readbyqxmd.com/read/28925881/coping-with-stress-during-aging-the-importance-of-a-resilient-brain
#14
P Sampedro-Piquero, P Álvarez-Suárez, A Begega
BACKGROUND: Resilience is the ability to achieve a positive outcome when we are in the face of adversity. It supposes an active resistance to adversity by coping mechanisms in which genetic, molecular, neural and environmental factors are involved. Resilience has been usually studied in early ages and few is known about it during aging. METHODS: In this review, we will address the age-related changes in the brain mechanisms involved in regulating the stress response...
September 15, 2017: Current Neuropharmacology
https://www.readbyqxmd.com/read/28922238/primary-central-nervous-system-lymphoma-time-for-diagnostic-biomarkers-and-biotherapies
#15
Louis Royer-Perron, Khê Hoang-Xuan, Agusti Alentorn
PURPOSE OF REVIEW: Primary central nervous system lymphoma (PCNSL) is a rare cancer with a somber prognosis in older patients, which it affects predominantly. Only in recent years have molecular alterations characterizing PCNSL been thoroughly described. This opens possibilities for the use of targeted therapies. Developments in imaging and biomarkers have also great potential to help clinicians faced with diagnostic and prognostic uncertainties. RECENT FINDINGS: Several biomarkers for PCNSL, such as different microRNAs, which could be tested in cerebrospinal fluid and vitreous fluid, and IL-10, which has been shown to have excellent sensitivity and specificity in the cerebrospinal fluid, have emerged in the last years...
September 15, 2017: Current Opinion in Neurology
https://www.readbyqxmd.com/read/28922229/micrornas-as-clinical-biomarkers-and-therapeutic-tools-in-perioperative-medicine
#16
Simone Kreth, Max Hübner, Ludwig Christian Hinske
Over the past decade, evolutionarily conserved, noncoding small RNAs-so-called microRNAs (miRNAs)-have emerged as important regulators of virtually all cellular processes. miRNAs influence gene expression by binding to the 3'-untranslated region of protein-coding RNA, leading to its degradation and translational repression. In medicine, miRNAs have been revealed as novel, highly promising biomarkers and as attractive tools and targets for novel therapeutic approaches. miRNAs are currently entering the field of perioperative medicine, and they may open up new perspectives in anesthesia, critical care, and pain medicine...
September 14, 2017: Anesthesia and Analgesia
https://www.readbyqxmd.com/read/28921581/mir-122-promotes-metastasis-of-clear-cell-renal-cell-carcinoma-by-downregulating-dicer
#17
Yang Fan, Xin Ma, Hongzhao Li, Yu Gao, Qingbo Huang, Yu Zhang, Xu Bao, Qingshan Du, Guoxiong Luo, Kan Liu, Qingyu Meng, Chaofei Zhao, Xu Zhang
Although overall downregulation of microRNAs (miRNAs) is a general feature of clear-cell renal cell carcinoma (ccRCC), several miRNAs are consistently upregulated, among which miR-122 was markedly increased in ccRCC tissues. This study aims to determine the functional importance and underlying mechanism of miR-122 in ccRCC metastasis. Here we demonstrate that the expression of miR-122 increased in ccRCC tissues, and higher miR-122 expression was found in ccRCC tissues with metastatic disease than in those without metastasis...
September 16, 2017: International Journal of Cancer. Journal International du Cancer
https://www.readbyqxmd.com/read/28920467/annals-express-association-of-subcutaneous-and-visceral-fat-with-circulating-micrornas-in-a-middle-aged-japanese-population
#18
Eiji Munetsuna, Hiroya Yamada, Yoshitaka Ando, Mirai Yamazaki, Yoshiki Tsuboi, Mari Kondo, Genki Mizuno, Hiroaki Ishikawa, Keiko Sugimoto, Keisuke Osakabe, Naohiro Ichino, Koji Ohashi, Nobuyuki Hamajima, Koji Suzuki
Purpose It has been demonstrated that circulating microRNA (miRNA) profiles are affected by physiological conditions. Several studies have demonstrated that miRNAs play important roles in the regulation of adiposity. However, few have investigated the relationship between circulating miRNAs and obesity, which has become a major public health problem worldwide. Current study investigated the association between circulating miRNAs and obesity in a Japanese population. Methods Obesity parameters, such as subcutaneous (SAT) and visceral fat (VAT) adipose tissue, body fat percentage, and body mass index (BMI) were assessed in a cross-sectional sample of 526 participants who attended health examinations in Yakumo, Japan...
January 1, 2017: Annals of Clinical Biochemistry
https://www.readbyqxmd.com/read/28917839/m2b-macrophage-polarization-accompanied-with-reduction-of-long-noncoding-rna-gas5
#19
Ichiaki Ito, Akira Asai, Sumihiro Suzuki, Makiko Kobayashi, Fujio Suzuki
Macrophages (Mϕ) are highly plastic and change their functional phenotypes depending on microenvironmental signals. Recent studies have shown that microRNAs are involved in the polarization of Mϕ. In this study, we demonstrated that the phenotype of M2bMϕ [CCL1(+) IL-10(+) LIGHT(+)] switches to other phenotypes with interchangeability attained through the increased expression of growth arrest-specific 5 RNA (GAS5 RNA), a long non-coding RNA. GAS5 RNA has been described as a silencer of the CCL1 gene. Various phenotypes of Mϕ were prepared from bone marrow-derived Mϕ (BMDMϕ) after stimulation with IFNγ [M(IFNγ)]/M1Mϕ, IL-4 [M(IL-4)]/M2aMϕ, LPS and immobilized IgG [M(LPS + IC)]/M2bMϕ, and IL-10 [M(IL-10)/M2cMϕ]...
September 13, 2017: Biochemical and Biophysical Research Communications
https://www.readbyqxmd.com/read/28917501/personalized-translational-epilepsy-research-novel-approaches-and-future-perspectives-part-i-clinical-and-network-analysis-approaches
#20
REVIEW
Felix Rosenow, Natascha van Alphen, Albert Becker, Andreas Chiocchetti, Ralf Deichmann, Thomas Deller, Thomas Freiman, Christine M Freitag, Johannes Gehrig, Anke M Hermsen, Peter Jedlicka, Christian Kell, Karl Martin Klein, Susanne Knake, Dimitri M Kullmann, Stefan Liebner, Braxton A Norwood, Diana Omigie, Karlheinz Plate, Andreas Reif, Philipp S Reif, Yvonne Reiss, Jochen Roeper, Michael W Ronellenfitsch, Stephanie Schorge, Gerhard Schratt, Stephan W Schwarzacher, Joachim P Steinbach, Adam Strzelczyk, Jochen Triesch, Marlies Wagner, Matthew C Walker, Frederic von Wegner, Sebastian Bauer
Despite the availability of more than 15 new "antiepileptic drugs", the proportion of patients with pharmacoresistant epilepsy has remained constant at about 20-30%. Furthermore, no disease-modifying treatments shown to prevent the development of epilepsy following an initial precipitating brain injury or to reverse established epilepsy have been identified to date. This is likely in part due to the polyetiologic nature of epilepsy, which in turn requires personalized medicine approaches. Recent advances in imaging, pathology, genetics and epigenetics have led to new pathophysiological concepts and the identification of monogenic causes of epilepsy...
September 13, 2017: Epilepsy & Behavior: E&B
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