Receptor for Advanced Glycation End Products (RAGEs) and Experimental Diabetic Neuropathy
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Dossier post-publication
- Nature
- Retraction
- Motif
- Duplication of/in Image;
- Date
- 5/1/2014 0:00
- Signalé par OpenAlex ?
- Oui
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Résumé
OBJECTIVE: Heightened expression of the receptor for advanced glycation end products (RAGE) contributes to development of systemic diabetic complications, but its contribution to diabetic neuropathy is uncertain. We studied experimental diabetic neuropathy and its relationship with RAGE expression using streptozotocin-induced diabetic mice including a RAGE(-/-) cohort exposed to long-term diabetes compared with littermates without diabetes. RESEARCH DESIGN AND METHODS: Structural indexes of neuropathy were addressed with serial (1, 3, 5, and 9 months of experimental diabetes) electrophysiological and quantitative morphometric analysis of dorsal root ganglia (DRG), peripheral nerve, and epidermal innervation. RAGE protein and mRNA levels in DRG, peripheral nerve, and epidermal terminals were assessed in WT and RAGE(-/-) mice, with and without diabetes. The correlation of RAGE activation with nuclear factor (NF)-kappaB and protein kinase C beta II (PKC beta II) protein and mRNA expression was also determined. RESULTS: Diabetic peripheral epidermal axons, sural axons, Schwann cells, and sensory neurons within ganglia developed dramatic and cumulative rises in RAGE mRNA and protein along with progressive electrophysiological and structural abnormalities. RAGE(-/-) mice had attenuated structural features of neuropathy after 5 months of diabetes. RAGE-mediated signaling pathway activation for NF-kappaB and PKC beta II pathways was most evident among Schwann cells in the DRG and peripheral nerve. CONCLUSIONS: In a long-term model of experimental diabetes resembling human diabetic peripheral neuropathy, RAGE expression in the peripheral nervous system rises cumulatively and relates to progressive pathological changes. Mice lacking RAGE have attenuated features of neuropathy and limited activation of potentially detrimental signaling pathways.
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La notice
- Revue
- Diabetes
- Thématique
- Advanced Glycation End Products research
- Domaine
- Biochemistry, Genetics and Molecular Biology
- Établissements canadiens
- Hotchkiss Brain InstituteUniversity of Calgary
- Organismes subventionnaires
- Canadian Institutes of Health ResearchAlberta Heritage Foundation for Medical ResearchFondation pour la Recherche MédicaleCanadian Diabetes Association
- Mots-clés
- Rage (emotion)MedicinePeripheral neuropathyDiabetic neuropathyEndocrinologyDiabetes mellitusGlycationInternal medicineAdvanced glycation end-productSural nerveNeuroscienceBiologyPathology
- Résumé présent dans OpenAlex
- oui