Expression of plasma microRNA in patients with acromegaly

2019 ◽  
Vol 65 (5) ◽  
pp. 311-318 ◽  
Author(s):  
Alexander S. Lutsenko ◽  
Zhanna E. Belaya ◽  
Elena G. Przhiyalkovskaya ◽  
Alexey G. Nikitin ◽  
Philipp A. Koshkin ◽  
...  
Keyword(s):  
Expression Analysis ◽  
Posttranscriptional Regulation ◽  
Regulation Of Gene Expression ◽  
Bioinformatic Analysis ◽  
Healthy Controls ◽  
Rna Molecules ◽  
Non Coding Rna ◽  
Plasma Microrna ◽  
Larger Sample ◽  
Control Study

BACKGROUND: microRNA is a class of small non-coding RNA molecules involved in posttranscriptional regulation of gene expression. MicroRNAs are detectable in blood in stable concentrations, which makes them promising biomarkers for various diseases. AIM: to assess plasma microRNA expression in patients with active acromegaly compared with healthy controls. MATERIAL AND METHODS: single-center, case-control study: assessment of plasma microRNA in patients with acromegaly compared with healthy controls. Fasting blood samples were drawn and centrifuged at +5С temperature and 3000 rpm for 20 minutes, then aliquoted and frozen at 80C until further analysis. MicroRNA extraction and library preparation was done according to manufacturers instructions. Expression analysis was performed on NextSeq sequencer. Bioinformatic analysis using atropos (adapted deletion), STAR (aligning), FastQC (quality control), seqbuster/seqcluster/miRge2 (microRNA annotation, isomiR and new microRNA search, expression analysis). Primary endpoint of the study differential expression of plasma microRNA in patients with acromegaly compared with healthy controls. RESULTS: we included 12 patients with acromegaly age 33.1 [20; 47], BMI 29.3 kg/m2 [24.0; 39.6], IGF-1 686.1 ng/mL [405.9; 1186.0] and 12 healthy subjects age 36.2 [26; 44], BMI 26.7 kg/m2 [19.5; 42.5], IGF-1 210.4 ng/mL [89.76; 281.90]; gender ratio for both groups 4 males, 8 females. The groups did not differ in gender (p=0.666), age (p=0.551) and BMI (p=0.378). We found decreased expression of four microRNAs in patients with acromegaly: miR-4446-3p 1.317 (p=0.001), miR-215-5p 3.040 (p=0.005), miR-342-5p 1.875 (p=0.013) and miR-191-5p 0.549 (p=0.039). However, none of these changes were statistically significant after adjustment for multiple comparisons (q 0.1). CONCLUSION: we found four microRNAs, which could potentially be downregulated in plasma of patients with acromegaly. The result need to be validated using different measurement method with larger sample size.

scholarly journals A mikro-RNS-ek patogenetikai és diagnosztikai szerepe mellékvesekéreg-carcinomában

2018 ◽  
Vol 159 (7) ◽  
pp. 245-251 ◽  
Author(s):  
Zoltán Nagy ◽  
Ábel Decmann ◽  
Pál Perge ◽  
Péter Igaz
Keyword(s):  
Posttranscriptional Regulation ◽  
Regulation Of Gene Expression ◽  
Adrenocortical Cancer ◽  
Altered Expression ◽  
Rna Molecules ◽  
Adrenocortical Adenomas ◽  
Non Coding Rna ◽  
Adrenocortical Tumours ◽  
Clinical Consequences ◽  
Advanced Stages

Abstract: Adrenocortical tumours are quite prevalent. Most of these tumours are benign, hormonally inactive adrenocortical adenomas. Rare hormone-secreting adrenocortical adenomas are associated with severe clinical consequences, whereas the prognosis of the rare adrenocortical cancer is rather poor in its advanced stages. The pathogenesis of these tumours is only partly elucidated. MicroRNAs are small, non-coding RNA molecules that are pivotal in the regulation of several basic cell biological processes via the posttranscriptional regulation of gene expression. Their altered expression has been described in many tumours. Several tissue microRNAs, such as miR-483-5p, miR-503, miR-210, miR-335 and miR-195 were found to be differentially expressed among benign and malignant adrenocortical tumours, and these could also have pathogenic relevance. Due to their tissue specific and stable expression, microRNAs can be exploited in diagnostics as well. As the histological diagnosis of adrenocortical malignancy is difficult, microRNAs might be of help in the establishment of malignancy. Novel data show that microRNAs are secreted in various body fluids, projecting their applicability as biomarkers as part of liquid biopsy. In this review, we attempt to present a synopsis on the pathogenic relevance of microRNAs in adrenocortical tumours and their potential diagnostic applicability. Orv Hetil. 2018; 159(7): 245–251.

Suggested roles for microRNA in tumors

2015 ◽  
Vol 6 (2) ◽  
pp. 149-155 ◽  
Author(s):  
Pál Perge ◽  
Zoltán Nagy ◽  
Ivan Igaz ◽  
Peter Igaz
Keyword(s):  
Gene Expression ◽  
Tumor Suppressor ◽  
Posttranscriptional Regulation ◽  
Regulation Of Gene Expression ◽  
Circulating Micrornas ◽  
Tumor Surveillance ◽  
Rna Molecules ◽  
Non Coding Rna ◽  
Epigenetic Machinery ◽  
Surveillance Mechanism

AbstractMicroRNAs are short non-coding RNA molecules encoded by distinct genes involved in the posttranscriptional regulation of gene expression. Forming part of the epigenetic machinery, microRNAs are involved in several aspects of tumorigenesis. Deregulation of microRNA expression is a common feature of tumors. Overexpressed oncogenic and underexpressed tumor suppressor microRNAs have been described in many different tumors. MicroRNAs are released from tumors that might affect other cells within and outside the tumor. Circulating microRNAs might also be involved in a tumor surveillance mechanism. In this short overview, some important aspects of microRNA in tumors are discussed.

scholarly journals Molecular Mechanisms, Diagnostic Aspects and Therapeutic Opportunities of Micro Ribonucleic Acids in Atrial Fibrillation

2020 ◽  
Vol 21 (8) ◽  
pp. 2742 ◽  
Author(s):  
Allan Böhm ◽  
Marianna Vachalcova ◽  
Peter Snopek ◽  
Ljuba Bacharova ◽  
Dominika Komarova ◽  
...  
Keyword(s):  
Gene Expression ◽  
Atrial Fibrillation ◽  
Molecular Mechanisms ◽  
Wide Spectrum ◽  
Regulation Of Gene Expression ◽  
Review Article ◽  
Ribonucleic Acids ◽  
Rna Molecules ◽  
Diagnostic Aspects ◽  
Non Coding Rna

Micro ribonucleic acids (miRNAs) are short non-coding RNA molecules responsible for regulation of gene expression. They are involved in many pathophysiological processes of a wide spectrum of diseases. Recent studies showed their involvement in atrial fibrillation. They seem to become potential screening biomarkers for atrial fibrillation and even treatment targets for this arrhythmia. The aim of this review article was to summarize the latest knowledge about miRNA and their molecular relation to the pathophysiology, diagnosis and treatment of atrial fibrillation.

scholarly journals Functional Analysis of Three miRNAs in Agropyron mongolicum Keng under Drought Stress

Agronomy ◽  
2019 ◽  
Vol 9 (10) ◽  
pp. 661 ◽  
Author(s):  
Xuting Zhang ◽  
Bobo Fan ◽  
Zhuo Yu ◽  
Lizhen Nie ◽  
Yan Zhao ◽  
...  
Keyword(s):  
Drought Stress ◽  
Drought Tolerance ◽  
High Throughput Sequencing ◽  
Target Genes ◽  
Northern China ◽  
Bioinformatic Analysis ◽  
Pcr Analysis ◽  
Rna Molecules ◽  
Natural Pasture ◽  
Non Coding Rna

Agropyron mongolicum Keng, a perennial diploid grass with high drought tolerance, belongs to the genus Agropyron, tribe Triticeae. It has made tremendous contributions toward reseeding natural pasture and seeding artificial grassland in China, especially in the arid and semi-arid area of northern China. As a wild relative of wheat, A. mongolicum is also a valuable resource for the genetic improvement of wheat crops. MicroRNAs are small non-coding RNA molecules ubiquitous in plants, which have been involved in responses to a wide variety of stresses including drought, salinity, chilling temperature. To date, little research has been done on drought-responsive miRNAs in A. mongolicum. In this study, two miRNA libraries of A. mongolicum under drought and normal conditions were constructed, and drought-responsive miRNAs were screened via Solexa high throughput sequencing and bioinformatic analysis. A total of 114 new miRNAs were identified in A. mongolicum including 53 conservative and 61 unconservative miRNAs, and 1393 target genes of 98 miRNAs were predicted. Seventeen miRNAs were found to be differentially expressed under drought stress, seven (amo-miR21, amo-miR62, amo-miR82, amo-miR5, amo-miR77, amo-miR44 and amo-miR17) of which were predicted to target on genes involved in drought tolerance. QRT-PCR analysis confirmed the expression changes of the seven drought related miRNAs in A. mongolicum. We then transformed the seven miRNAs into Arabidopsis thaliana plants, and three of them (amo-miR21, amo-miR5 and amo-miR62) were genetically stable. The three miRNAs demonstrated the same expression pattern in A. thaliana as that in A. mongolicum under drought stress. Findings from this study will better our understanding of the molecular mechanism of miRNAs in drought tolerance and promote molecular breeding of forage grass with improved adaption to drought.

scholarly journals Pathobiology of MicroRNAs and Their Emerging Role in Thyroid Fine-Needle Aspiration

2015 ◽  
Vol 59 (6) ◽  
pp. 435-444 ◽  
Author(s):  
Marie Ludvíková ◽  
David Kalfeřt ◽  
Ivana Kholová
Keyword(s):  
Posttranscriptional Regulation ◽  
Regulation Of Gene Expression ◽  
Follicular Adenoma ◽  
Follicular Carcinoma ◽  
Disease Status ◽  
Needle Aspiration ◽  
Thyroid Tumors ◽  
Fine Needle ◽  
Rna Molecules ◽  
Distinct Disease

Objective: MicroRNAs (miRs) are noncoding, single-stranded regulatory RNA molecules involved in the posttranscriptional regulation of gene expression. They control the development and maintenance of the diverse cellular processes including proliferation, differentiation, motility and apoptosis. Expression of miRs is tissue-specific and each alteration of the tissue miR profile is associated with a distinct disease status. Study Design: We reviewed the literature on the expression of miRs in thyroid tumors, focusing on methodology and diagnostic and prognostic output. Separately, we analyzed 11 studies on miR profiles in thyroid cytological material. Results: Numerous studies have evaluated the miR profiles of thyroid tumors in an attempt to find a possible diagnostic and prognostic role. Both downregulation and upregulation of numerous miRs was found, but differences between the surgical pathology specimens and corresponding fine-needle aspirates in the expression of the same miRs were also reported. Conclusions: The results from surgically resected material cannot be extrapolated into preoperative use without validation. For diagnostic use, the strong overlap between follicular adenoma and follicular carcinoma miR profiles is challenging. In summary, miR-221 and miR-222 are consistently upregulated in different types of thyroid carcinomas and might be used as markers of malignancy.

scholarly journals A miR-182 variant and risk of hepatocellular carcinoma in a southern Chinese population

2020 ◽  
Vol 14 (1) ◽  
Author(s):  
Moqin Qiu ◽  
Yingchun Liu ◽  
Qiuling Lin ◽  
Zihan Zhou ◽  
Yanji Jiang ◽  
...  
Keyword(s):  
Chinese Population ◽  
Regulation Of Gene Expression ◽  
Nucleotide Polymorphisms ◽  
Older Individuals ◽  
Single Nucleotide ◽  
Southern Chinese ◽  
Increased Risk ◽  
Stratified Analysis ◽  
Larger Sample ◽  
Control Study

Abstract MicroRNAs (miRNAs) play important roles in the regulation of gene expression at the posttranscriptional level and are involved in human carcinogenesis. The aim of the current study was to investigate the associations between miR-182 single nucleotide polymorphisms and HCC risk in a southern Chinese population. In this case-control study of 863 HCC patients and 908 cancer-free controls, we performed genotyping of miR-182 rs4541843 and assessed its association with HCC risk. We found that individuals carrying the AG/AA genotypes of miR-182 rs4541843 were significantly associated with an increased risk of HCC compared with those carrying the GG genotype (adjusted odds ratio (OR) = 1.71, 95% confidence interval (CI) = 1.07–2.76, P = 0.026). In the stratified analysis, this increased risk was more pronounced in the subgroups of older individuals (adjusted OR = 1.98, 95% CI = 1.04–3.76, P = 0.037), males (adjusted OR = 1.81, 95% CI = 1.09–2.99, P = 0.021), and never drinkers (adjusted OR = 1.84, 95% CI = 1.03–3.30, P = 0.041). Our results suggested that miR-182 polymorphism rs4541843 may contribute to the susceptibility to HCC. Our findings require validation in further studies with larger sample sizes.

scholarly journals The role of microRNAs in angiogenesis

2019 ◽  
Vol 65 (4) ◽  
Author(s):  
Joanna Bujak ◽  
Patrycja Kopytko ◽  
Małgorzata Lubecka ◽  
Katarzyna Sokołowska ◽  
Maciej Tarnowski
Keyword(s):  
Regulation Of Gene Expression ◽  
Tumor Development ◽  
Main Function ◽  
Rna Molecules ◽  
Pathological Conditions ◽  
Non Coding Rna ◽  
Antiangiogenic Factors ◽  
And Migration ◽  
Post Transcriptional Regulation

Angiogenesis is the process that leads to the formation of new blood vessels. Under physiological conditions it occurs, inter alia, during corpus luteum formation and in some stages of the menstrual cycle. However, angiogenesis plays an essential role in many pathological conditions, particularly cancer. New blood vessel formation provides cancer cells with oxygen and essential nutrients, which stimulates tumor growth and facilitates its metastasis. Increasing evidence indicates that angiogenesis is regulated by microRNAs (miRNAs), which are small non-coding RNA molecules of 19–25 nucleotides. The main function of miRNAs is post-transcriptional regulation of gene expression, which controls many key biological processes, including cell proliferation, differentiation and migration. Endothelial miRNAs, known as angiomiRs, are presumably involved in tumor development and angiogenesis through regulation of pro- and antiangiogenic factors. To date, the miRNAs that stimulate angiogenesis are: miR-9, miR-27a, miR-30d, miR0-130b, miR-139, miR-146a, miR-150, miR-155, miR-200c, miR-296 and miR-558. Conversely, miRNAs that inhibit angiogenesis are: miR-145, miR-519c, miR-22, miR-20a, miR-92, miR-7b, miR-221, miR-222, miR-328 and miR-101.

scholarly journals MicroRNAs in Cerebral Ischemia

2013 ◽  
Vol 2013 ◽  
pp. 1-6 ◽  
Author(s):  
Yang Wang ◽  
Yongting Wang ◽  
Guo-Yuan Yang
Keyword(s):  
Cerebral Ischemia ◽  
Posttranscriptional Regulation ◽  
Noncoding Rna ◽  
Regulation Of Gene Expression ◽  
Pathological Process ◽  
Future Prospects ◽  
Rna Molecules ◽  
And Function ◽  
The Brain

The risk of ischemic stroke increases substantially with age, making it the third leading cause of death and the leading cause of long-term disability in the world. Numerous studies demonstrated that genes, RNAs, and proteins are involved in the occurrence and development of stroke. Current studies found that microRNAs (miRNAs or miRs) are also closely related to the pathological process of stroke. miRNAs are a group of short, noncoding RNA molecules playing important role in posttranscriptional regulation of gene expression and they have emerged as regulators of ischemic preconditioning and ischemic postconditioning. Here we give an overview of the expression and function of miRNAs in the brain, miRNAs as biomarkers during cerebral ischemia, and clinical applications and limitations of miRNAs. Future prospects of miRNAs are also discussed.

scholarly journals MicroRNAs as Biomarkers for Animal Health and Welfare in Livestock

2020 ◽  
Vol 7 ◽  
Author(s):  
Silvia Miretti ◽  
Cristina Lecchi ◽  
Fabrizio Ceciliani ◽  
Mario Baratta
Keyword(s):  
Current Knowledge ◽  
Animal Health ◽  
Regulation Of Gene Expression ◽  
Cell Communication ◽  
Rna Molecules ◽  
Non Invasive ◽  
Non Coding Rna ◽  
Wide Range ◽  
Post Transcriptional Regulation ◽  
Extracellular Environment

MicroRNAs (miRNAs) are small and highly conserved non-coding RNA molecules that orchestrate a wide range of biological processes through the post-transcriptional regulation of gene expression. An intriguing aspect in identifying these molecules as biomarkers is derived from their role in cell-to-cell communication, their active secretion from cells into the extracellular environment, their high stability in body fluids, and their ease of collection. All these features confer on miRNAs the potential to become a non-invasive tool to score animal welfare. There is growing interest in the importance of miRNAs as biomarkers for assessing the welfare of livestock during metabolic, environmental, and management stress, particularly in ruminants, pigs, and poultry. This review provides an overview of the current knowledge regarding the potential use of tissue and/or circulating miRNAs as biomarkers for the assessment of the health and welfare status in these livestock species.

scholarly journals Differential Expression and Bioinformatic Analysis of the circRNA Expression in Migraine Patients

2020 ◽  
Vol 2020 ◽  
pp. 1-14
Author(s):  
Jinghan Lin ◽  
Shanshan Shi ◽  
Qihui Chen ◽  
Yonghui Pan
Keyword(s):  
Migraine Patient ◽  
Noncoding Rna ◽  
Bioinformatic Analysis ◽  
Rank Aggregation ◽  
Pcr Analysis ◽  
Clear Understanding ◽  
Healthy Controls ◽  
Rna Molecules ◽  
Pathway Enrichment ◽  
Mechanistic Basis

Background. CircRNAs are noncoding RNA molecules that have recently been described and shown to regulate miRNA functionality. While recent studies have suggested such circRNAs to be associated with pain related diseases in humans, no comprehensive migraine-related circRNA profiles have been generated, and there is currently no clear understanding of whether they can serve as regulators of migraine pathology. Methods. We initially conducted a circRNA microarray analysis of the plasma of migraine patients and healthy controls. Based upon these data, we then selected 8 differentially expressed circRNAs and confirmed their expression in more migraine patient plasma samples via real-time PCR. We then performed functional and pathway enrichment analyses. Lastly, using a robust rank aggregation approach, we constructed a ceRNA network according to predicted circRNA–miRNA and miRNA–mRNA pairs in these migraine patient samples. Results. We were able to detect 2039 circRNAs in our patient samples, with 794 of 1245 these circRNAs being up- and downregulated in migraine patients relative to controls, respectively ( fold   change ≥ 1.5 , p < 0.01 ). A qRT-PCR analysis confirmed that the expression of hsa_circRNA_100236, hsa_circRNA_102413, and hsa_circRNA_000367 was significantly enhanced in migraine patients, whereas the expression of hsa_circRNA_103809, hsa_circRNA_103670, and hsa_circRNA_101833 was significantly reduced in these individuals relative to healthy controls. We found these differentially regulated circRNAs to be associated with numerous predicted biological processes, with enrichment analyses suggesting that they may modulate the PI3K-Akt signaling so as to promote inflammation to drive migraine development. However, further research will be needed to formally test these mechanistic possibilities and to validate these circRNAs as potential biomarkers of migraine patients. Conclusions. Our results offer new potential insights into the mechanistic basis of this condition and suggest that hsa_circRNA_000367 and hsa_circRNA_102413 may offer value as regulators of migraine pathology.

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