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Molecular Insights into Diabetic Nephropathy

Special Issue Editor

Special Issue Information

Dear Colleagues,

Diabetic kidney disease (DKD; diabetic nephropathy) is one of the most serious microvascular complications of diabetes mellitus, the leading cause of end-stage chronic kidney disease worldwide, and the principal diagnosis in more than 50% of individuals undergoing renal transplantation. Hyperglycemia and insulin resistance in diabetes lead to metabolic stress in different populations of renal cells, the most sensitive being podocytes, endothelial cells, and the epithelium of the proximal tubules. These changes result in mitochondrial dysfunction, oxidative stress, and the triggering of inflammatory pathways, eventually leading to cytoskeletal reorganization and fibrosis. While some aspects of the complex molecular processes underlying these pathophysiological processes are understood, the field still remains largely unexplored. Therefore, we encourage authors to submit original research and review articles focusing on the molecular underpinnings of diabetic kidney disease pathophysiology.

Prof. Dr. Natalija Filipović
Guest Editor

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Keywords

  • diabetic nephropathy
  • hyperglycemia
  • insulin resistance
  • oxidative stress
  • mitochondrial dysfunction
  • chronic kidney disease

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Published Papers (1 paper)

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Research

20 pages, 17930 KB  
Article
Ultrastructural Characterization of Pannexin 1 Expression Along the Rat Nephron
by Ivana Bočina, Nives Kević, Ivana Restović, Leo Jerčić, Marinela Jelinčić Korčulanin, Katarina Vukojević and Natalija Filipović
Int. J. Mol. Sci. 2026, 27(4), 1640; https://doi.org/10.3390/ijms27041640 - 7 Feb 2026
Viewed by 830
Abstract
Pannexins are transmembrane glycoproteins that share structural and functional similarities with the gap junction proteins innexins and connexins. They play a critical role in paracrine and intracellular signalling, including purinergic signalling via the release of extracellular ATP. The role of pannexins in renal [...] Read more.
Pannexins are transmembrane glycoproteins that share structural and functional similarities with the gap junction proteins innexins and connexins. They play a critical role in paracrine and intracellular signalling, including purinergic signalling via the release of extracellular ATP. The role of pannexins in renal function and the pathophysiology of renal diseases is being intensely studied. However, there are no data on the subcellular localization of pannexin 1 expression in the rat kidney. We studied the distribution of pannexin 1 in the rat kidney, combining light microscopy with immunofluorescent immunohistochemistry and transmission electron microscopy with immunogold pannexin labelling. We found strong expression of pannexin in glomerular podocytes, proximal tubules and collecting ducts; moderate expression in the endothelium of glomerular and peritubular capillaries; thin descending and thick ascending limbs of the loop of Henle; and weaker pannexin 1 expression in the distal tubular epithelium. We described the detailed ultrastructural localization of pannexin 1 expression. This is the first study describing the ultrastructural distribution of pannexin 1 in the rat kidney, one of the most used preclinical models in renal physiology and pathology research. These results provide previously missing data on the precise distribution of pannexin 1 in the rat kidney, which is a prerequisite for a proper understanding of its role in renal physiology and pathophysiology. Full article
(This article belongs to the Special Issue Molecular Insights into Diabetic Nephropathy)
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