Download or read book MicroRNAs as Biomarkers for Inflammatory Bowel Disease written by Poorani Sivaraman and published by . This book was released on 2014 with total page 372 pages. Available in PDF, EPUB and Kindle. Book excerpt: MicroRNAs (miRNAs) are short non-coding RNAs of 19-22 nucleotides that regulate gene expression. They target the 3'-untranslated region (UTR), and sometimes the 5'-UTR, of messenger RNAs (mRNAs), and suppress protein translation and/or trigger mRNA degradation. Since their discovery, miRNAs have been implicated in various regulatory pathways and diseases. New miRNAs are constantly being discovered that are yet to be fully characterised or validated. Few miRNAs and their genes have been well studied and characterised. Inflammatory bowel disease (IBD) is a chronic inflammatory disorder, whose etiology appears to involve genetic, environmental, and immunological factors. The Krissansen laboratory recently obtained evidence for the overexpression of hsa-miR-595 and hsa-miR- 1246 in the sera of patients suffering from severe forms of IBD. It was hypothesized that both miRNAs might be involved in the maintenance of the epithelial barrier function of the intestine, and/or in immune regulation. There is a lack of information in the published literature regarding these miRNAs, their gene features, and their target mRNAs. Research was carried out to study the characteristics of the genes that encode hsa-miR-595 and hsa-miR-1246, to identify potential mRNA targets of these miRNAs, and determine whether the miRNAs are involved in disrupting the tight junctions formed by intestinal epithelial cells. Bioinformatics analyses were carried out to identify features of the genes encoding miR-595 and miR-1246 to provide evidence of the authenticity of these miRNAs. The NCBI GenBank database was searched for expressed sequence tags (ESTs) encoding the 5'- and 3'-flanking regions of the genes to provide evidence that the genes are transcribed. In silico screening of various miRNA target databases for mRNA targets of these miRNAs was carried out. 3'-UTR luciferase reporter assays were developed to determine whether selected targets were authentic. The ability of miR-595 and miR-1246 to inhibit the expression of selected mRNA targets expressed by the human epithelial colorectal adenocarcinoma (Caco- 2) cell line was examined. An attempt was made to get Caco-2 cells to form spheroids during 3D cell culture, in order to subsequently use the spheroids to demonstrate disruption of tight junctions by miR-595 and miR-1246. Bioinformatics analyses indicated that both hsa-miR-595 located at chromosome 7q36.3 and hsa-miR-1246 located at chromosome 2q31.1 potentially contain common gene features such as putative promoters, transcription start sites, CpG islands, and polyadenylation signal sites. The hsa-miR-595 gene is intragenic, being located within intron 1 of the protein tyrosine phosphate receptor type 2, N polypeptide (PTPRN2) gene. In contrast, hsa-miR-1246 is intergenic, being located between the metaxin 2 (MTX-2) and nuclear factor, erythroid 2-like 2 (NFE2L2) genes. Experimental work needs to be carried out to prove whether the predicted gene features identified are involved in the transcription and regulation of these miRNA genes. ESTs encoding each gene were identified in cDNA libraries prepared from a variety of different tissues, indicating that the miR-595 and miR-1246 genes are actively transcribed in different tissues. A literature search revealed that hsa-miR-1246 had been cross-mapped to chromosome 17, being located within the gene encoding the small nuclear RNA RNU2-1. The U2 locus consists of 6 to more than 30 tandem repeats indicating that this locus gives rise to multiple copies of hsa-miR-1246. It is not known whether the elevated levels of hsa-miR- 1246 in the sera of IBD patients arise from overexpression of hsa-miR-1246 on chromosome 2 or chromosome 17, or both. A search of various miRNA target databases indicated that either miR-595 or miR-1246, or both, targeted CDH2, PARD6A, NCAM1, FGFR2, AJAP1, and DYRK1A. MiR-595 had previously been reported to target the tight junction protein PARD6A, causing disruption of the permeability of epithelia, which might be expected to have important implications for IBD. MiR-1246 had previously been reported to target DYRK1A, causing increased expression of the transcription factor NFAT1c that induces the expression of inflammatory cytokines, and which might be expected to have important implications for IBD. An attempt was made to experimentally validate the above mRNA targets using a 3'-UTR luciferase reporter assay, but the assay was not successful due to technical issues and time constraints. Several attempts were made to form hollow spheroids from Caco-2 cells to mimic the gut wall and lumen, but the spheroids produced were not correctly formed in that they appeared to be deflated. In summary, the experimental approaches tackled were not successful in providing conclusive evidence about the authenticity of the mRNA targets, but will be useful for future validation. In conclusion, the results of the computational analyses and experimental approaches attempted provide a framework, and basis for future investigation of miR-595 and miR-1246, and their mRNA targets. In the future, these miRNAs could be investigated for their utility in diagnosing the severity of IBD. Inhibitors of the miRNAs could be investigated for their ability to prevent or attenuate disease symptoms.

Download or read book MicroRNA in Inflammatory Bowel Disease written by Kurt Fisher and published by . This book was released on 2016 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Idiopathic inflammatory bowel disease (IBD) is a complex set of disorders that predominantly includes ulcerative colitis and Crohn's disease. The pathogenesis of IBD is multifactorial including genetic, infectious, and immunologic factors. MicroRNAs belong to a class of noncoding small RNAs that posttranscriptionally regulate gene expression, and they are an emerging class of genetic modifiers of IBD. Here, we focus on the use of unique microRNA expression patterns as biomarkers to classify and prognosticate disease severity in both mucosal tissue and serum from patients with either ulcerative colitis or Crohn's disease. Furthermore, we discuss specific microRNAs with respect to their roles in IBD pathogenesis and fibrosis. We also discuss the role of microRNAs in IBD-associated carcinogenesis, including their role as biomarkers, tumor suppressors, and oncogenes. Finally, we discuss the emerging therapeutic applications of microRNA manipulation to lessen the effect of IBD and its sequelae. Recent discoveries of the diverse roles of microRNAs in IBD pathogenesis have the potential to provide new targeted therapeutics for personalized medicine.

Download or read book Biomarkers in Inflammatory Bowel Diseases written by Nik Sheng Ding and published by Springer. This book was released on 2019-05-13 with total page 355 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book provides a comprehensive and complete overview of biomarkers in clinical practice for inflammatory bowel disease (IBD) bringing together the literature in a clear and concise manner. The book bridges the gap between growing knowledge at the bench and current and future applications of biomarkers in clinical practice. The central structure of the book focuses on prognostic and predictive biomarkers in IBD with an emphasis on the fields of research and scientific techniques (genomics, proteomics and metabonomics) that have led to biomarker discovery and places these biomarkers within a clinical context to help understand their utility in clinical practice. This book will be of use to clinicians who have an interest in using biomarkers in clinical practice as well as clinician researchers and scientists involved in the biomarker research pipeline. The author team comprises experts from around the world in order to bring together the literature in an effort to inform clinicians and researchers about the current state-of-the art in biomarker discovery. It is intended to assist future research efforts and indicate how biomarkers might be best applied to clinical practice both at present and in the future.

Download or read book MicroRNAs and Other Non Coding RNAs in Inflammation written by Catherine M. Greene and published by Springer. This book was released on 2015-02-06 with total page 242 pages. Available in PDF, EPUB and Kindle. Book excerpt: The book serves as a comprehensive resource for scientists and clinicians studying the role of non-coding RNAs in inflammation (viral infections, wound inflammation), human inflammatory diseases (i.e. rheumatoid arthritis, Crohn’s disease, diabetes) and innate immunity. It provides a universal reference work comprising both basic and specialized information. Given that ncRNAs represent new therapeutic targets, this volume will also be of interest to industrial biomedical researchers and those involved in drug development.

Download or read book Molecular Genetics of Inflammatory Bowel Disease written by Mauro D'Amato and published by Springer Science & Business Media. This book was released on 2013-10-05 with total page 344 pages. Available in PDF, EPUB and Kindle. Book excerpt: Research in Crohn’s disease (CD) and ulcerative colitis (UC), together known as the inflammatory bowel diseases (IBD), has truly seen a revolution in the last 5-10 years. This book examines how these genetic discoveries have led to the identification of biological functions not previously associated with IBD pathophysiology (e.g. autophagy), how multiple genetic risk factors for IBD converge on given biological functions and that together the identified variants in these genes have predisposing and protective roles (e.g. the multiple variants in the receptor for the IL23 cytokine and its signaling cascade), and how having such a large number of known genetic risk factors has changed our understanding not only about the genetic and molecular overlap between CD and UC, but also between these diseases and other chronic inflammatory diseases (e.g. psoriasis, multiple sclerosis, type 1 diabetes and many others).

Download or read book MicroRNA in Cancer written by Suresh Alahari and published by Springer Science & Business Media. This book was released on 2012-08-01 with total page 149 pages. Available in PDF, EPUB and Kindle. Book excerpt: The field of microRNA biology is really emerging in the last couple of years. Several investigators highlighted the importance of miRNAs in cancer. Although there is so much literature on microRNAs exist, a comprehensive book is still not available. Thus this book will be a great use to the scientists in the field of cancer biology. In addition, this book will be a good source of information for undergraduate, graduate students who want to develop their research careers in cancer biology.

Download or read book Characterisation of MicroRNAs in Ulcerative Colitis and Colitis Associated Cancer for Use as Potential Biomarkers written by Maleene Patel and published by . This book was released on 2017 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Exosomal SmRNA a Noninvasive Biomarker for Diagnosis of Inflammatory Bowel Disease written by Sean Henry Manning and published by . This book was released on 2020 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Inflammatory bowel disease (IBD) is a chronic inflammatory disorder of the gastrointestinal tract affecting over 3 million adults in the United States. Despite being widespread, reliable early diagnostic tests are not available. In order to remedy this, we evaluated exosomal small RNA (smRNA), specifically targeting microRNA (miRNA) and piRNA from the stool samples of IBD model mice as a potential diagnostic marker. Exosomes are a sub-type of extracellular nano-sized vesicles that mediate extracellular communication via transport of various biomolecules such as coding and non-coding RNAs (e.g., miRNA). The exosome communication process impacts several physiological and pathological pathways by modulating protein expression. Recently, investigation into the applicability of exosomal miRNA as diagnostic biomarkers has grown significantly. Here, we evaluated exosomal smRNA, specifically targeting miRNA, and piRNA from the stool samples of IBD model mice as potential markers of IBD. We used interleukin 10 knockout mice (IL-10KO), a validated model for IBD, and compared their fecal exosomal small RNA to that of wild type C57BL/6J (B6) mice. Stool samples were specifically chosen because they are readily available and collection is noninvasive. Feces were collected weekly for a total of 7 weeks from 28, conventionally housed, 4-week-old IL-10KO mice. Equal numbers of males (n=7), and females (n=7) were randomly assigned to each group. Additionally, a modified Crohn's disease activity index was used to score each mouse's clinical condition twice a week. At the end of the experimental period, the GI tract was collected, and disease severity scored. Histopathology showed a significant increase in inflammation and proliferation within the proximal and distal large intestines. In total, 12 smRNA's were found that are modulated during the development of IBD in our mouse model. Their unique expression patter may help differentiate IBD from related diseases and allow for earlier and less invasive diagnosis.

Download or read book Colitis Associated Cancer written by Masato Kusunoki and published by Springer. This book was released on 2015-10-01 with total page 151 pages. Available in PDF, EPUB and Kindle. Book excerpt: As the number of patients with colitis-associated cancer (CAC) is on the increase, the purpose of this book is to review the latest topics concerning management of the disease. In recent years, the diagnostic power of endoscopy and molecular pathology has also grown tremendously, as a result of which they now have a far greater influence on the treatment of CAC. At the moment, appropriate monitoring programs for ulcerative colitis and Crohn’s disease remain uncertain. At the same time, the latest findings on DNA methylation and microRNAs hold the promise of making revolutionary changes in these areas. Moreover, recent drug advances in the treatment of inflammatory bowel diseases have changed surgical indications. On the other hand, the indication of mucosectomy on colorectal cancer in ulcerative colitis and prophylactic abdominoperineal resection for Crohn’s disease remain controversial. This book provides the latest information on the remaining issues of CAC from the point of view of expert surgeons.

Download or read book MicroRNA Regulation of Tumorigenic Pathways in Inflammatory Bowel Disease associated Cancer written by Ziad M. Kanaan and published by . This book was released on 2010 with total page 298 pages. Available in PDF, EPUB and Kindle. Book excerpt: Inflammatory bowel diseases (IBD) consist of Crohn's disease (CD) and ulcerative colitis (UC). IBD patients have an increased risk of colorectal cancer (CRC) development. MicroRNAs (miRNAs) are small non-protein-coding RNAs that play important roles in CRC oncogenesis. We aim to identify differentially expressed miRNAs in IBD-associated CRC progression with study of their possible effect on tumorigenic pathways such as the p53 pathway. Eighteen formalin-fixed paraffin-embedded (FFPE) colonic tissue specimens representing IBD-CRC progression from six IBD (4 CD and 2 UC) patients were utilized in this study. Pathologist-guided laser capture micro-dissection was performed to isolate cell populations of normal, dysplastic and cancerous epithelial cells from each patient. miRNA detection was performed using reverse transcription polymerase chain reaction (RT-PCR) arrays in triplicate and data was subjected to "bioinformatics pathway analysis" to understand the effect of differentially expressed miRNAs upon the p53 pathway. We were able to track CRC progression in all IBD patients, from normal tissue to dysplasia and eventually cancer. Five miRNAs were commonly down-regulated (miR-193b, miR-373, let-7e, miR-15b, and miR-372) (p

Download or read book A Study of the Role of MicroRNAs in Inflammatory Bowel Disease written by Andrew Claridge and published by . This book was released on 2013 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Nutrigenomics and Proteomics in Health and Disease written by Martin Kussmann and published by John Wiley & Sons. This book was released on 2017-05-08 with total page 350 pages. Available in PDF, EPUB and Kindle. Book excerpt: Now in a revised second edition, Nutrigenomics and Proteomics in Health and Disease brings together the very latest science based upon nutrigenomics and proteomics in food and health. Coverage includes many important nutraceuticals and their impact on gene interaction and health. Authored by an international team of multidisciplinary researchers, this book acquaints food and nutrition professionals with these new fields of nutrition research and conveys the state of the science to date. Thoroughly updated to reflect the most current developments in the field, the second edition includes six new chapters covering gut health and the personal microbiome; gut microbe-derived bioactive metabolites; proteomics and peptidomics in nutrition; gene selection for nutrigenomic studies; gene-nutrient network analysis, and nutrigenomics to nutritional systems biology. An additional five chapters have also been significantly remodelled. The new text includes a rethinking of in vitro and in vivo models with regard to their translatability into human phenotypes, and normative science methods and approaches have been complemented by more comprehensive systems biology-based investigations, deploying a multitude of omic platforms in an integrated fashion. Innovative tools and methods for statistical treatment and biological network analysis are also now included.

Download or read book Bioinformatics in MicroRNA Research written by Jingshan Huang and published by Humana Press. This book was released on 2017-05-25 with total page 285 pages. Available in PDF, EPUB and Kindle. Book excerpt: This thorough volume provides an in-depth introduction to and discussion of microRNAs (miRs) and their targets, miR functions, and computational techniques applied in miR research, thus serving the need for a comprehensive book focusing on miR target genes, miR regulation mechanisms, miR functions performed in various human diseases, and miR databases/knowledgebases. Without prior knowledge of the area of study, computational biologists, computer scientists, bioinformaticians, bench biologists, as well as clinical investigators will find it easy to follow the techniques in this collection. Written for the highly successful Methods in Molecular Biology series, chapters include the kind of detailed implementation advice that ensures successful results. Accessible and practical, Bioinformatics in MicroRNA Research functions as an ideal guide for researchers of all backgrounds to explore this vital area of study.

Download or read book Chronic Graft Versus Host Disease written by Georgia B. Vogelsang and published by Cambridge University Press. This book was released on 2009-04-20 with total page 427 pages. Available in PDF, EPUB and Kindle. Book excerpt: Chronic graft versus host disease (GVHD) is the most common complication of allogenic bone marrow transplantation. Because of the protracted clinical course of chronic GVHD, transplant centers and hematology/oncology offices are inadequately equipped to manage these immuno-incompetent patients with a multi-system disorder. Practitioners need to be able to recognize and effectively manage chronic GVHD as a late effect of more than half of allogenic transplantations. The text is oriented for the clinician, with chapters covering staging, organ site and system-specific manifestations, treatment options, and supportive care. Drs Georgia B. Vogelsang and Steven Z. Pavletic have been pioneers in the recognition of the multi-organ complexity of this disease and have gathered the input of a variety of subspecialist physicians for this book. This book fills the gap in practical literature on chronic GVHD, providing a comprehensive, up-to-date, and clinically relevant resource for anyone who deals with cancer patients post-transplant.

Download or read book Pain Models written by Hermann O. Handwerker and published by Lippincott Williams & Wilkins. This book was released on 2015-06-01 with total page 663 pages. Available in PDF, EPUB and Kindle. Book excerpt: The neurobiology and mechanisms discovered in animals often do not translate to patients with a chronic pain condition. To help researchers and clinicians develop and use models that can help translate data from animals into humans, this book presents experimental animal models, with a focus on how they may translate into humans human experimental pain models, including details about pain induction and assessment human surrogate pain models clinical applications of pain models models that may link mechanisms of pain and pruritus Pain Models contains 29 chapters by internationally recognized experts. It is a comprehensive survey of pain models at different levels, and commentaries by clinicians directly address clinical perspectives. This unique book is unprecedented in its content. It's a quick reminder of the hard work needed to investigate the complex issue of pain perception. With the advent of increasingly sensitive noninvasive investigational tools, the authors want readers to know that basic research is still needed to help develop new drugs. This book will enrich anyone who wishes to know all that goes into conducting pain research with a lab-based pain model.

Download or read book The Personalized Diet written by Eran Segal and published by Hachette UK. This book was released on 2017-12-26 with total page 384 pages. Available in PDF, EPUB and Kindle. Book excerpt: A paradigm-shifting diet book that explains why one-size-fits-all diets don't work and helps readers customize their diet to lose weight and improve health. There are certain things we take as universal truths when it comes to dieting and health: kale is good; ice cream is bad. Until now. When Drs. Segal and Elinav published their groundbreaking research on personalized nutrition, it created a media frenzy. They had proved that individuals react differently to the same foods-a food that might be healthy for one person is unhealthy for another. In one stroke, they made all universal diet programs obsolete. The Personalized Diet helps readers understand the fascinating science behind their work, gives them the tools to create an individualized diet and lifestyle plan (based on their reactions to favorite foods) and puts them on the path to losing weight, feeling good, and preventing disease by eating in the way that's right for them.

Download or read book Functional Neurologic Disorders written by and published by Academic Press. This book was released on 2016-10-06 with total page 684 pages. Available in PDF, EPUB and Kindle. Book excerpt: Functional Neurologic Disorders, the latest volume in the Handbook of Clinical Neurology series, summarizes state-of-the-art research findings and clinical practice on this class of disorders at the interface between neurology and psychiatry. This 51-chapter volume offers an historical introduction, chapters on epidemiology and pathophysiolology, a large section on the clinical features of different type of functional neurologic symptoms and disorders (including functional movement disorders, non-epileptic seizures, dizziness, vision, hearing, speech and cognitive symptoms), and then concluding with approaches to therapy. This group of internationally acclaimed experts in neurology, psychiatry, and neuroscience represent a broad spectrum of areas of expertise, chosen for their ability to write clearly and concisely with an eye toward a clinical audience. This HCN volume sets a new landmark standard for a comprehensive, multi-authored work dealing with functional neurologic disorders (also described as psychogenic, dissociative or conversion disorders). Offers a comprehensive interdisciplinary approach for the care of patients with functional disorders seen in neurologic practice, leading to more efficient prevention, management, and treatment Provides a synthesis of research efforts incorporating clinical, brain imaging and neurophysiological studies Fills an existing gap between traditional neurology and traditional psychiatry Contents include coverage of history, epidemiology, clinical presentations, and therapy Edited work with chapters authored by leaders in the field, the broadest, most expert coverage available