Premium
Role of Protein Kinase G and Reactive Oxygen Species in the Regulation of Podocyte Function in Health and Disease
Author(s) -
Piwkowska Agnieszka
Publication year - 2017
Publication title -
journal of cellular physiology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.529
H-Index - 174
eISSN - 1097-4652
pISSN - 0021-9541
DOI - 10.1002/jcp.25613
Subject(s) - podocyte , slit diaphragm , microbiology and biotechnology , intracellular , reactive oxygen species , chemistry , oxidative stress , diabetic nephropathy , medicine , protein kinase a , proteinuria , endocrinology , biology , kinase , diabetes mellitus , kidney
Podocytes and their foot processes form an important cellular layer of the glomerular barrier involved in the regulation of glomerular permeability. Disturbing the function of podocytes plays a central role in the development of proteinuria in diabetic nephropathy. Retraction of the podocyte foot processes that form slit diaphragms is a common feature of proteinuria; although, the correlation between these events in not well understood. Notably, it is unclear whether podocyte foot processes are able to regulate slit diaphragm permeability and glomerular ultrafiltration. The occurrence of reactive oxygen species generation, insulin resistance, and hyperglycemia characterizes early stages of type 2 diabetes. Protein kinase G type I alpha (PKGIα) is an intracellular target for vasorelaxant factors. It is activated in both cGMP‐dependent and cGMP‐independent manners. Recently, we demonstrated a relationship between oxidative stress, PKGIα activation, actin reorganization, and changes in the permeability of the filtration barrier. This review discusses how redox imbalance affects both the activity of PKGIα and PKGI‐dependent signaling pathways in podocytes. J. Cell. Physiol. 232: 691–697, 2017. © 2016 Wiley Periodicals, Inc.