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Total 1499 results found since Jan 2013.

High Fat and Diet Induced Obesity
i-FectTM Delivers Again!Research shows that rats and humans on a high-fat diet (HFD) are less sensitive to satiety signals known to act via vagal afferent pathways. Impaired vagal afferent responsiveness to both gastric satiety hormones (CCK and leptin) and mechanical stimulation raises the possibility that changes in electrophysiological properties may be the underlying mechanism responsible for impaired vagal responsiveness to a wide variety of satiety signals.Potassium channels play a central role. To demonstrate this researchers used ouri-Fect siRNA Transfection Kit to silence TRESK and TASK1 to understand there impact...
Source: Neuromics - September 16, 2019 Category: Neuroscience Tags: diabetes iFect obesity Obesity Research RNAi siRNA siRNA delivery in-vivo Source Type: news

Systemic Delivery of siRNA Specific for Silencing TLR4 Gene Expression Reduces Diabetic Cardiomyopathy in a Mouse Model of Streptozotocin-Induced Type  1 Diabetes
ConclusionOur study used siRNA to specifically silence TLR4 gene expression in the diabetic mouse heart in vivo and to investigate the role that TLR4 plays in diabetic cardiomyopathy. It is likely that silencing of the TLR4 gene through siRNA could prevent the development of diabetic cardiomyopathy.
Source: Diabetes Therapy - April 12, 2020 Category: Endocrinology Source Type: research

Hyperbranched cationic polysaccharide derivatives for efficient siRNA delivery and diabetic wound healing enhancement.
Abstract Gene vectors are important for successful siRNA delivery. Four types of hyperbranched cationic polysaccharide derivatives (HCP) were synthesized by conjuncting 1,2-ethylenediamine (EDA) and diethylenetriamine (DETA) with glycogen or amylopectin respectively and named as G-EDA, G-DETA, A-EDA and A-DETA. The efficiency and safety of these HCPs to deliver siRNA were explored in vitro and in vivo. Our results showed that HCPs could form complexes with siRNA. All HCP/siRNA exhibited negligible cytotoxicity. Compared with A-EDA and A-DETA, G-EDA and G-DETA could carry much more siRNA into cells and then escape ...
Source: International Journal of Biological Macromolecules - March 16, 2020 Category: Biochemistry Authors: Lan B, Wu J, Li N, Pan C, Yan L, Yang C, Zhang L, Yang L, Ren M Tags: Int J Biol Macromol Source Type: research

Lipid nanoparticle delivery of glucagon receptor siRNA improves glucose homeostasis in mouse models of diabetes
Conclusion While leptin may be more effective than Gcgr siRNA at normalizing both glucose and lipid metabolism in STZ diabetes, Gcgr siRNA is more effective at reducing blood glucose levels in HFD/STZ diabetes.
Source: Molecular Metabolism - June 23, 2017 Category: Endocrinology Source Type: research

lncRNA NONRATT021972 siRNA Decreases Diabetic Neuropathic Pain Mediated by the P2X 3 Receptor in Dorsal Root Ganglia
Abstract Long noncoding RNAs (lncRNAs) participate in physiological and pathophysiological processes. Type 2 diabetes mellitus (T2DM) accounts for more than 90 % of all cases of diabetes mellitus (DM). Diabetic neuropathic pain (DNP) is a common complication of T2DM. The aim of this study was to investigate the effects of lncRNA NONRATT021972 small interference RNA (siRNA) on DNP mediated by the P2X3 receptor in dorsal root ganglia (DRG). These experiments showed that the expression levels of NONRATT021972 in DRG were increased in the T2DM rat model (intraperitoneal injection of STZ with 30 mg/kg). The concentra...
Source: Molecular Neurobiology - January 7, 2016 Category: Neurology Source Type: research

Nanosystems based on siRNA silencing HuR expression counteract diabetic retinopathy in rat
In conclusion, we demonstrated that siRNA can be efficiently delivered into the rat retina using lipid-based nanocarriers, and some of the lipoplexes loaded with siRNA silencing HuR expression are potential candidates to manage retinal diseases. Graphical abstract
Source: Pharmacological Research - July 27, 2016 Category: Drugs & Pharmacology Source Type: research

RTP801 Gene Expression Is Differentially Upregulated in Retinopathy and Is Silenced by PF-04523655, a 19-Mer siRNA Directed Against RTP801 Retina
Conclusions. In rodent retinopathy models, administration of the siRNA, PF-04523655, reduced RTP801 expression in the retina, consistent with the RNA-induced silencing complex (RISC) mechanism of action. The pharmacodynamic profile from the animal models could be useful to elucidate dose and exposure dependency of RTP801 expression inhibition by siRNA.
Source: Investigative Ophthalmology - March 4, 2014 Category: Opthalmology Authors: Rittenhouse, K. D., Johnson, T. R., Vicini, P., Hirakawa, B., Kalabat, D., Yang, A. H., Huang, W., Basile, A. S. Tags: Retina Source Type: research

LncRNA NONRATT021972 siRNA rescued decreased heart rate variability in diabetic rats in superior cervical ganglia.
Abstract Diabetic cardiac autonomic neuropathy (DCAN) is a serious and common complication in diabetes mellitus (DM). Long noncoding RNAs (lncRNAs), an important class of regulatory molecules in diverse biological processes, have attracted considerable interest in DCAN. Our previous study has indicated a lncRNA, NONRATT021972 (NONCODE ID), was enhanced in sympathetic neuronal-like PC12 cells in the setting of high glucose (HG) and high FFAs (HF); its silence was found to significantly alleviate HGHF-induced tumor necrosis factor-α (TNF-α) release in PC12 cells. Here we further explore the effects of NONRATT02197...
Source: Autonomic Neuroscience - August 4, 2016 Category: Neuroscience Authors: Xu H, Liu C, Rao S, He L, Zhang T, Sun S, Wu B, Zou L, Wang S, Xue Y, Jia T, Zhao S, Li G, Liu S, Li G, Liang S Tags: Auton Neurosci Source Type: research

Inflammatory gene silencing in activated monocytes by a cholesterol tagged-miRNA/siRNA: a novel approach to ameliorate diabetes induced inflammation
AbstractThere is a major unmet need for the development of effective therapies for diabetes induced inflammation. Increased adenosine-uridine rich elements (AREs) containing mRNAs of inflammatory molecules are reported in inflamed monocytes. Destabilizing these inflammatory mRNAs by the miR-16 could reduce inflammation. DNA microarrays and  in vitro cell studies showed that exogenous miR16 and its mimic treatment, in LPS/PMA induced monocytes, significantly downregulated several ARE containing inflammatory cytokine mRNAs similar to those seen in the normal monocytes. Ingenuity pathway analyses showed exogenous miR-16 or ...
Source: Cell and Tissue Research - May 23, 2022 Category: Cytology Source Type: research

Treatment of the metabolic syndrome by siRNA targeting apolipoprotein CIII
AbstractApolipoprotein CIII (apoCIII) is increased in obesity-induced insulin resistance and type-2 diabetes. Emerging evidences support the advantages of small interfering RNAs (siRNAs) to target disease-causing genes. The aim of this study was to develop siRNAs for in vivo silencing of apoCIII and investigate if this results in metabolic improvements comparable to what we have seen using antisense oligonucelotides against apoCIII. Twenty-four siRNAs were synthesized and tested in a dual luciferase reporter assay. The eight best were selected, based on knockdown at 20  nM, and of these, two were selected based on IC50 v...
Source: BioFactors - August 31, 2022 Category: Biochemistry Authors: Patricia Recio ‐López, Ismael Valladolid‐Acebes, Philipp Hadwiger, Markus Hossbach, Monika Krampert, Carla Prata, Per‐Olof Berggren, Lisa Juntti‐Berggren Tags: RESEARCH COMMUNICATION Source Type: research

SiRNA-HMGA2 weakened AGEs-induced epithelial-to-mesenchymal transition in Tubular epithelial cells.
In this study,we found that AGEs induced EMT and accompanied by reduced expression of the epithelial markers E-cadherin and enhanced expression of the mesenchymal markers vimentin and alpha-smooth muscle actin. Furthermore, the expression of HMGA2 was upregulated by AGEs. Far more interesting, its knockdown by short interfering RNA (siRNA) effectively reversed AGEs-induced EMT. Meanwhile, we also found that knockdown of HMGA2 inhibited high AGEs-induced generation of reactive oxygen species (ROS) and the activation of p38 MAPK. Collectively, these studies suggest that HMGA2 plays a important role in EMT during Diabetic nep...
Source: Biochemical and Biophysical Research communications - January 23, 2015 Category: Biochemistry Authors: Bai YH, Wang JP, Yang M, Zen Y, Jiang HY Tags: Biochem Biophys Res Commun Source Type: research

Effects of LncRNA BC168687 siRNA on Diabetic Neuropathic Pain Mediated by P2X7 Receptor on SGCs in DRG of Rats.
In conclusion, lncRNA BC168687 may participate in the pathogenesis of DNP mediated by P2X7 receptor, which will provide a novel way for the study of the pathogenesis of diabetes mellitus complicated with neuropathic pain and its prevention and treatment. PMID: 29204447 [PubMed - in process]
Source: Biomed Res - December 7, 2017 Category: Research Authors: Liu C, Tao J, Wu H, Yang Y, Chen Q, Deng Z, Liu J, Xu C Tags: Biomed Res Int Source Type: research