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Melatonin heals the gut

Excess alcohol consumption and stress are suggested to be key elements in the development of gastrointestinal disorders (Konturek et al., 2011). Dysfunction of the small intestinal barrier function with increased permeability is a common clinical observation in patients with inflammatory bowel syndrome (IBS) and alcoholic liver disease (Sommansson et al., 2013b). Therapeutic administration of the

Validity of histology for the diagnosis of paediatric coeliac disease: a Swedish multicentre study.

Objective Histological evaluation of intestinal biopsies for the diagnosis of coeliac disease can be challenging and compatible with risk of misdiagnosis. The aim was to evaluate the agreement of pathological diagnosis for coeliac disease in children investigated at four major paediatric university hospitals in Sweden. Materials and methods Intestinal duodenal biopsies were collected from 402 chil

Children's Views on Long-Term Screening for Type 1 Diabetes.

There are an increasing number of medical research studies involving children, including many long-term birth cohort studies. Involving children raises many issues, and little is known about children's own views. This study explored children's views (N = 5,851) on participation in a long-term screening study for type 1 diabetes. The results show that children 10 to 13 years of age have in general

GLP-1 for type 2 diabetes

Glucagon-like peptide-1 (GLP-1)-based therapy of type 2 diabetes is executed either by GLP-1 receptor agonists, which stimulate the GLP-1 receptors, or by dipeptidyl peptidase-4 (DPP-4) inhibitors, which prevent the inactivation of endogenous GLP-1 thereby increasing the concentration of endogenous active GLP-1. GLP-1 activates pancreatic receptors resulting in improved glycemia through glucose-de

On depolarization-evoked exocytosis as a function of calcium entry: possibilities and pitfalls.

Secretion from many endocrine cells is a result of calcium-regulated exocytosis due to Ca(2+) influx. Using the patch-clamp technique, voltage pulses can be applied to the cells to open Ca(2+) channels, resulting in a measurable Ca(2+) current, and evoke exocytosis, which can be seen as an increase in membrane capacitance. A common tool for evaluating the relation between Ca(2+) influx and exocyto

Downregulation of Type II Diabetes Mellitus and Maturity Onset Diabetes of Young Pathways in Human Pancreatic Islets from Hyperglycemic Donors.

Although several molecular pathways have been linked to type 2 diabetes (T2D) pathogenesis, it is uncertain which pathway has the most implication on the disease. Changes in the expression of an entire pathway might be more important for disease pathogenesis than changes in the expression of individual genes. To identify the molecular alterations in T2D, DNA microarrays of human pancreatic islets

Thermoseparating water/polymer system: A novel one-polymer aqueous two-phase system for protein purification

In this study we show that proteins can be partitioned and separated in a novel aqueous two-phase system composed of only one polymer in water solution. This system represents an attractive alternative to traditional two-phase systems which uses either two polymers (e.g., PEG/dextran) or one polymer in high-salt concentration (e.g., PEG/salt). The polymer in the new system is a linear random copol

Comparison of different extraction techniques for isolation of antioxidants from sweet grass (Hierochloe odorata)

Strong antioxidants, 5,8-dihydroxycoumarin and 5-hydroxy-8-O-beta-D-glucopyranosyl-benzopyranone were extracted from sweet grass (Hierochloe odorata L.) by using Soxhlet (SE), microwave-assisted (MAE) and supercritical fluid carbon dioxide (SFE) extractions at different extraction schemes and parameters. One-step MAE gave the most concentrated extract with 8.15% of 5,8-dihydroxycoumarin (extract y

Shared genetic factors involved in celiac disease, type 2 diabetes and anorexia nervosa suggest common molecular pathways for chronic diseases

Background and Objectives: Genome-wide association studies (GWAS) have identified several genetic regions involved in immune-regulatory mechanisms to be associated with celiac disease. Previous GWAS also revealed an over-representation of genes involved in type 2 diabetes and anorexia nervosa associated with celiac disease, suggesting involvement of common metabolic pathways for development of the

Transcriptional regulation of miRNA-212 and miRNA-132 and their fine-tuning function of beta cell insulin secretion

Type 2 diabetes is characterized by hyperglycemia due to insulin resistance in the target tissue and insufficient insulin secretion from the beta cells. Finding new mechanisms and pathways involved in the regulation of insulin secretion from the pancreatic beta cells is of great importance. Our group has earlier found, miRNA-212 and miRNA-132 to be upregulated in the non-obese type 2 diabetic GK r

MiR-335 regulates exocytotic proteins and affects glucose-stimulated insulin secretion through decreased Ca2+-dependent exocytosis in beta cells

Background and aims: Ca2+-induced exocytosis is essential for insulin to be secreted from beta-cells, and in islets from type-2 diabetic (T2D) donors the expression of several genes coding for exocytotic proteins is reduced. Largely this phenomenon cannot be explained by polymorphism; rather it is likely due to epigenetic factors like microRNAs (miRNAs). Indeed, previous studies have identified a

Interaction between the obesity-risk gene FTO and the dopamine D2 receptor gene ANKK1/TaqIA on insulin sensitivity

Aims/hypothesis: Variations in FTO are the strongest common genetic determinants of adiposity, and may partly act by influencing dopaminergic signalling in the brain leading to altered reward processing that promotes increased food intake. Therefore, we investigated the impact of such an interaction on body composition, and peripheral and brain insulin sensitivity. Methods: Participants from the T

Sweetened beverage intake and risk of latent autoimmune diabetes in adults (LADA) and type 2 diabetes

Objective: Sweetened beverage intake is associated with increased risk of type 2 diabetes, but its association with autoimmune diabetes is unclear. We aimed to investigate sweetened beverage intake and risk of latent autoimmune diabetes in adults (LADA); autoimmune diabetes with features of type 2 diabetes. Design/methods: Data from a Swedish population-based study was used, including incident cas

Applications of Signal Processing to Microphone Node Calibration and Medical Signal Classification

Localization is an important enabling technology for many applications, such as wireless sensor networks, emergency rescue services, civil defense and transportation. Suppose that a room is equipped with several microphones (or sensors), and one person is making a sound while moving around in the room. Can one find microphone and sound source positions as well as reconstruct a room geometry? The a

Human adipogenesis is associated with genome-wide DNA methylation and gene-expression changes

Aim: To define the genomic distribution and function of DNA methylation changes during human adipogenesis. Methods: We isolated adipocyte-derived stem cells from 13 individuals and analyzed genome-wide DNA methylation and gene expression in cultured adipocyte-derived stem cells and mature adipocytes. Results: We observed altered DNA methylation of 11,947 CpG sites and altered expression of 11,830