Angiotensin II Modulates Podocyte Glucose Transport. 2018

Barbara Lewko, and Anna Maryn, and Elzbieta Latawiec, and Agnieszka Daca, and Apolonia Rybczynska
Department of Pathophysiology Faculty of Pharmacy, Medical University of Gdansk, GdaƄsk, Poland.

Podocytes play a central role in the maintenance of the glomerular filtration barrier and are cellular targets of angiotensin II (AngII). Non-hemodynamic pathways of AngII signaling regulate cellular function and mediate podocyte abnormalities that are associated with various glomerulopathies, including diabetic kidney disease. In this study we investigated the capacity of AngII to modulate glucose uptake in mouse podocytes expressing the human AT1 receptor (AT1R+) after 5 days of exposure to normal (NG, 5.6 mmol/L) or to high (HG, 30 mmol/L) glucose. Short (30 min) as well as long-term (24 h) incubations with AngII markedly enhanced glucose transport in both NG and HG cells. In podocytes cultured under NG conditions, AngII inhibited insulin-stimulated glucose uptake. Regardless of the presence or absence of AngII, no effect of insulin on glucose uptake was observed in HG cells. Stimulation of glucose transport by AngII was mediated by protein kinase C and by phosphoinositide 3-kinase. Glucose dependent surface expression of the glucose transporters GLUT1, GLUT2, and GLUT4 was modulated by AngII in a time and glucose concentration dependent manner. Furthermore, despite its inhibitory effect on insulin's action, AngII elevated the number of podocyte insulin receptors in both NG and HG cultured cells. These findings demonstrate that AngII modulates podocyte basal, as well as insulin-dependent glucose uptake by regulating glucose transporters and insulin signaling.

UI MeSH Term Description Entries

Related Publications

Barbara Lewko, and Anna Maryn, and Elzbieta Latawiec, and Agnieszka Daca, and Apolonia Rybczynska
June 1996, The Journal of clinical investigation,
Barbara Lewko, and Anna Maryn, and Elzbieta Latawiec, and Agnieszka Daca, and Apolonia Rybczynska
June 1997, Journal of molecular and cellular cardiology,
Barbara Lewko, and Anna Maryn, and Elzbieta Latawiec, and Agnieszka Daca, and Apolonia Rybczynska
July 2016, Apoptosis : an international journal on programmed cell death,
Barbara Lewko, and Anna Maryn, and Elzbieta Latawiec, and Agnieszka Daca, and Apolonia Rybczynska
June 1999, Proceedings of the Society for Experimental Biology and Medicine. Society for Experimental Biology and Medicine (New York, N.Y.),
Barbara Lewko, and Anna Maryn, and Elzbieta Latawiec, and Agnieszka Daca, and Apolonia Rybczynska
April 2010, Hypertension (Dallas, Tex. : 1979),
Barbara Lewko, and Anna Maryn, and Elzbieta Latawiec, and Agnieszka Daca, and Apolonia Rybczynska
January 2012, Laboratory investigation; a journal of technical methods and pathology,
Barbara Lewko, and Anna Maryn, and Elzbieta Latawiec, and Agnieszka Daca, and Apolonia Rybczynska
December 2023, Renal failure,
Barbara Lewko, and Anna Maryn, and Elzbieta Latawiec, and Agnieszka Daca, and Apolonia Rybczynska
June 2000, Biochemical and biophysical research communications,
Barbara Lewko, and Anna Maryn, and Elzbieta Latawiec, and Agnieszka Daca, and Apolonia Rybczynska
January 2019, Cellular physiology and biochemistry : international journal of experimental cellular physiology, biochemistry, and pharmacology,
Barbara Lewko, and Anna Maryn, and Elzbieta Latawiec, and Agnieszka Daca, and Apolonia Rybczynska
November 2018, Cell biology international,
Copied contents to your clipboard!