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2017 ; 7
(ä): 44584
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Phosphodiesterase-5 inhibition preserves renal hemodynamics and function in mice
with diabetic kidney disease by modulating miR-22 and BMP7
#MMPMID28294194
Pofi R
; Fiore D
; De Gaetano R
; Panio G
; Gianfrilli D
; Pozza C
; Barbagallo F
; Xiang YK
; Giannakakis K
; Morano S
; Lenzi A
; Naro F
; Isidori AM
; Venneri MA
Sci Rep
2017[Mar]; 7
(ä): 44584
PMID28294194
show ga
Diabetic Nephropathy (DN) is the leading cause of end-stage renal disease.
Preclinical and experimental studies show that PDE5 inhibitors (PDE5is) exert
protective effects in DN improving perivascular inflammation. Using a mouse model
of diabetic kidney injury we investigated the protective proprieties of PDE5is on
renal hemodynamics and the molecular mechanisms involved. PDE5i treatment
prevented the development of DN-related hypertension (P?0.001), the increase of
urine albumin creatinine ratio (P?0.01), the fall in glomerular filtration rate
(P?0.001), and improved renal resistive index (P?0.001) and kidney
microcirculation. Moreover PDE5i attenuated the rise of nephropathy biomarkers,
soluble urokinase-type plasminogen activator receptor, suPAR and neutrophil
gelatinase-associated lipocalin, NGAL. In treated animals, blood vessel perfusion
was improved and vascular leakage reduced, suggesting preserved renal endothelium
integrity, as confirmed by higher capillary density, number of CD31(+) cells and
pericyte coverage. Analysis of the mechanisms involved revealed the induction of
bone morphogenetic protein-7 (BMP7) expression, a critical regulator of
angiogenesis and kidney homeostasis, through a PDE5i-dependent downregulation of
miR-22. In conclusion PDE5i slows the progression of DN in mice, improving
hemodynamic parameters and vessel integrity. Regulation of miR-22/BMP7, an
unknown mechanism of PDE5is in nephrovascular protection, might represent a novel
therapeutic option for treatment of diabetic complications.
|Albumins/metabolism
[MESH]
|Animals
[MESH]
|Biomarkers/blood
[MESH]
|Bone Morphogenetic Protein 7/*genetics
[MESH]
|Creatinine/urine
[MESH]
|Cyclic Nucleotide Phosphodiesterases, Type 5/drug effects/*genetics
[MESH]