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Volume 68, Issue 2, Pages (August 2005)

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1 Volume 68, Issue 2, Pages 898-907 (August 2005)
Cellular mechanisms of vascular injury mediated by calcineurin inhibitors  Santiago Lamas  Kidney International  Volume 68, Issue 2, Pages (August 2005) DOI: /j x Copyright © 2005 International Society of Nephrology Terms and Conditions

2 Figure 1 Increased expression of endothelial nitric oxide synthase (eNOS) in endothelial cells. The figure depicts a representative Northern analysis of eNOS mRNA expression in bovine aortic endothelial cells (BAEC) exposed to cyclosporine A (CsA) for the indicated times. Shown also is the 28S ribosomal RNA. Kidney International  , DOI: ( /j x) Copyright © 2005 International Society of Nephrology Terms and Conditions

3 Figure 2 Extracellular nitric oxide (NO) is increased in bovine aortic endothelial cells (BAEC). NO chemiluminescence signal and nitrite accumulation are increased in cells exposed to cyclosporine A (CsA) for short periods, thus implying an activation of the enzyme. Kidney International  , DOI: ( /j x) Copyright © 2005 International Society of Nephrology Terms and Conditions

4 Figure 3 Intracellular formation of superoxide is increased by the presence of cyclosporine A (CsA). The fluorescence intensity of dihydroethidine is increased by the presence of CsA and the superoxide generator DMNQ (2,3-dimethoxy-1,4-haptoquinore) in bovine aortic endothelial cells (BAEC), as evaluated by flow cytometry. Kidney International  , DOI: ( /j x) Copyright © 2005 International Society of Nephrology Terms and Conditions

5 Figure 4 Cyclosporine A (CsA) causes peroxynitrite production in bovine aortic endothelial cells (BAEC). The spatiotemporal coincidence of nitric oxide (NO) and O2- leads to peroxynitrite formation. This might be detected by an increased fluorescence intensity of dihydrorhodamine 123. Both the peroxynitrite generator SIN-1 (3-morpholinosydnonimine) and pure peroxynitrite give strong fluorescence, whereas inactivated peroxynitrite, hydrogen peroxide, the NO donor DEA-NO (diethylamine NoNOate) and DMNQ are comparable to control. Kidney International  , DOI: ( /j x) Copyright © 2005 International Society of Nephrology Terms and Conditions

6 Figure 5 Tyrosine nitration is increased in bovine aortic endothelial cells (BAEC). Immunodetection of tyrosine nitration is increased in BAEC treated with cyclosporine A (CsA) and SIN-1. The reaction is abrogated by the permeable manganese superoxide dismutase (MnSOD) analogue MnTMPyP and the antioxidant N-acetylcysteine (NAC) and competed by 3-nitrotyrosine. Kidney International  , DOI: ( /j x) Copyright © 2005 International Society of Nephrology Terms and Conditions

7 Kidney International 2005 68, 898-907DOI: (10. 1111/j. 1523-1755. 2005
Kidney International  , DOI: ( /j x) Copyright © 2005 International Society of Nephrology Terms and Conditions


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