Advertisement

Topics

08:00 EDT 15th April 2019 | BioPortfolio

Summary of ""

The literature suggests that mitochondrial DNA (mtDNA) defects are associated with a large number of diseases including cancers. The role of mtDNA variations in thyroid cancer is a highly controversial topic. Therefore, we investigated the role of mt-DNA control region (CR) variations in thyroid tumor progression and the influence of mtDNA haplogroups on susceptibility to thyroid tumors. For this purpose, in total, 108 hot thyroid nodules (HTNs), 95 cold thyroid nodules (CTNs), 48 papillary thyroid carcinoma (PTC) samples with their surrounding tissues and 104 healthy control subjects' blood samples were screened for all mtDNA CR variations using Sanger sequencing. We found that MtDNA haplogroup U was significantly associated with susceptibility to benign thyroid entities. In addition, eight single nucleotide polymorphisms (SNPs) (T146C, G185A, C194T, C295T, G16129A, T16304C, A16343G and T16362C) in the mtDNA CR were associated with the occurrence of benign and malign thyroid nodules in the Turkish population. As compared with samples taken from a healthy Turkish population and HTNs, the frequency of C7 repeats in D310 polycytosine sequence was found to be higher in CTNs and the PTC samples. In addition, the frequency of somatic mutations in mtMSI regions including T16189C and D514 CA dinucleotide repeats were found to be higher in PTC samples than benign thyroid nodules. Conversely, the frequency of somatic mutations in D310 was found to be higher in HTNs than CTNs and PTCs. In conclusion, mtDNA D310 instability does not play a role in the tumorigenesis of PTC but the results indicate that it might be used as a diagnostic clonal expansion biomarker for premalignant thyroid tumor cells. In addition, D514 CA instability might be considered as a prognostic biomarker for benign to malign transformation in thyroid tumors.

Affiliation

Journal Details

This article was published in the following journal.

Name: Experimental and clinical endocrinology & diabetes : official journal, German Society of Endocrinology [and] German Diabetes Association
ISSN: 1439-3646
Pages:

Links

DeepDyve research library

PubMed Articles [1001995 Results]

Effects of proinsulin misfolding on β-cell dynamics, differentiation and function in diabetes.

ER stress due to proinsulin misfolding has an important role in the pathophysiology of rare forms of permanent neonatal diabetes (PNDM) and probably also of common type 1 (T1D) and type 2 diabetes (T2...

Regulation of islet glucagon secretion: Beyond calcium.

The islet of Langerhans plays a key role in glucose homeostasis through regulated secretion of the hormones insulin and glucagon. Islet research has focused on the insulin-secreting β-cells, even tho...

Biosynthesis, structure, and folding of the insulin precursor protein.

Insulin synthesis in pancreatic β-cells is initiated as preproinsulin. Prevailing glucose concentrations, which oscillate pre- and postprandially, exert major dynamic variation in preproinsulin biosy...

Role of ghrelin in pancreatic development and function.

Ghrelin is a gastric peptide with anabolic functions. It acutely stimulates growth hormone (GH) secretion from the anterior pituitary glands and modulates hypothalamic circuits that control food intak...

Lysosomes in nutrient signalling: A focus on pancreatic β-cells.

Regulated insulin secretion from pancreatic β-cells is a major process maintaining glucose homeostasis in mammals. Enhancing insulin release in response to chronic nutrient overload and obesity-relat...

Clinical Trials [174625 Results]

The Utility of Peri-operative Arnica Montana for Reduction of Ecchymosis in Rhinoplasty Surgery

Arnica montana is a homeopathic drug that is made in accordance with the official methods of the Homeopathic Pharmacopoeia of the United States (HPUS) and is commonly used by cosmetic surg...

Pharyngeal Size in Patients With Obstructive Tonsils Under Orthodontic Treatment

Enlarged tonsils and malocclusion has relationship with sleep disturbance in children. The consequences of these features can include aggravation of craniofacial growth such that the devel...

The Biology of Chronic Preconditioning: Genomic and Physiologic Mechanisms of Response

The purpose of this study is to assess the effects of repeated RIPC and exercise, on exercise performance, skeletal muscle responses and circulating cellular and humoral biology in humans

Pilot Study of Raltegravir Lipodystrophy IISP

The substitution of raltegravir for the NRTIs will result in some reversal of the long term adverse effect of lipodystrophy (specifically peripheral lipoatrophy) that is associated with th...

Esophagoscopy in Evaluating Treatment in Patients With Stage I-IV Head and Neck Cancer Who Are Undergoing Radiation Therapy and/or Chemotherapy

Brief Summary: RATIONALE: Comparing results of diagnostic procedures, such as esophagoscopy, done before and after radiation therapy and/or chemotherapy may help doctors predict a patient...

Medical and Biotech [MESH] Definitions

An ionophorous, polyether antibiotic from Streptomyces chartreusensis. It binds and transports cations across membranes and uncouples oxidative phosphorylation while inhibiting ATPase of rat liver mitochondria. The substance is used mostly as a biochemical tool to study the role of divalent cations in various biological systems.

An organothiophosphate insecticide.

Places where animals are slaughtered and dressed for market.

Shortened forms of written words or phrases used for brevity.

That portion of the body that lies between the THORAX and the PELVIS.

Advertisement
Quick Search
Advertisement
Advertisement

 


DeepDyve research library

Relevant Topics

Bioinformatics
Bioinformatics is the application of computer software and hardware to the management of biological data to create useful information. Computers are used to gather, store, analyze and integrate biological and genetic information which can then be applied...

Thyroid Disorders
The thyroid is a butterfly-shaped gland in the neck, just above thecollarbone and is an endocrine gland that make hormones. These Thyroid hormones control the rate of many activities in the body, including how fast the body burns calories and how fast th...

DNA sequencing
DNA sequencing is the process of determining the precise order of nucleotides within a DNA molecule. During DNA sequencing, the bases of a small fragment of DNA are sequentially identified from signals emitted as each fragment is re-synthesized from a ...


Searches Linking to this Article