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| Content Provider | World Health Organization (WHO)-Global Index Medicus |
|---|---|
| Author | Hwang, Eun Ah Choi, Hye-Jung Mun, Kyo-Cheol Lee, Kyoung Jae Ha, Eunyoung |
| Description | Author Affiliation: Choi HJ ( Department of Biochemistry and Pain Research Center, School of Medicine, Keimyung University, Daegu 704701, Republic of Korea.); Lee KJ ( Department of Orthopedic Surgery, Keimyung University, Dongsan Medical Center, Daegu 700712, Republic of Korea.); Hwang EA ( Department of Internal Medicine, Dongsan Kidney Institute, Keimyung University, Dongsan Medical Center, Daegu 700712, Republic of Korea.); Mun KC ( Department of Biochemistry and Pain Research Center, School of Medicine, Keimyung University, Daegu 704701, Republic of Korea.); Ha E ( Department of Biochemistry and Pain Research Center, School of Medicine, Keimyung University, Daegu 704701, Republic of Korea.) |
| Abstract | Carbamylation is a cyanate-mediated posttranslational modification. We previously reported that carbamylated low-density lipoprotein (cLDL) increases reactive oxygen species and apoptosis via a lectin-like oxidized LDL receptor mediated pathway in human umbilical vein endothelial cells. A recent study reported an association between cLDL and type 2 diabetes mellitus (T2DM). In the current study, the effects of cLDL on glucose transport were explored in skeletal muscle cells. The effect of cLDL on glucose uptake, glucose transporter 4 (GLUT4) translocation, and signaling pathway were examined in cultured rat L6 muscle cells using 2-deoxyglucose uptake, immunofluorescence staining and western blot analysis. The quantity of nitric oxide (NO) was evaluated by the Griess reaction. The effect of native LDL (nLDL) from patients with chronic renal failure (CRF-nLDL) on glucose uptake was also determined. It was observed that cLDL significantly attenuated glucose uptake and GLUT4 translocation to the membrane, which was mediated via the increase in inducible nitric oxide synthase (iNOS)-induced NO production. Tyrosine nitration of the insulin receptor substrate-1 (IRS1) was increased. It was demonstrated that CRF-nLDL markedly reduced glucose uptake compared with nLDL from healthy subjects. Collectively, these findings indicate that cLDL, alone, attenuates glucose uptake via NO-mediated tyrosine nitration of IRS1 in L6 rat muscle cells and suggests the possibility that cLDL is involved in the pathogenesis of T2DM. |
| ISSN | 17912997 |
| e-ISSN | 17913004 |
| Journal | Molecular Medicine Reports |
| Issue Number | 1 |
| Volume Number | 12 |
| Language | English |
| Publisher | Spandidos Publications |
| Publisher Date | 2015-07-01 |
| Publisher Place | Greece |
| Access Restriction | Open |
| Subject Keyword | Diabetes Mellitus, Type 2 Metabolism Glucose Transporter Type 4 Glucose Lipoproteins, Ldl Nitric Oxide Animals Apoptosis Genetics Pathology Biosynthesis Insulin Receptor Substrate Proteins Kidney Failure, Chronic Administration & Dosage Metabolic Networks And Pathways Muscle, Skeletal Nitric Oxide Synthase Type Ii Reactive Oxygen Species Research Support, Non-u.s. Gov't Discipline Molecular Biology |
| Content Type | Text |
| Resource Type | Article |
| Subject | Genetics Biochemistry Molecular Biology Cancer Research Molecular Medicine Oncology |
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