Gene/Protein
Disease
Symptom
Drug
Enzyme
Compound
Pivot Concepts:
Gene/Protein
Disease
Symptom
Drug
Enzyme
Compound
Target Concepts:
Gene/Protein
Disease
Symptom
Drug
Enzyme
Compound
Query: EC:2.4.2.30 (
PARP
)
13,611
document(s) hit in 31,850,051 MEDLINE articles (0.00 seconds)
Oxidative stress may contribute to the hemodynamic progression of aortic valve stenosis, and is associated with activation of the nuclear enzyme poly(ADP-ribose) polymerase (
PARP
) 1. The aim of the present study was to assess the transcriptional profile and the topological distribution of
PARP-1
in human aortic valves, and its relation to the stenosis severity. Human stenotic aortic valves were obtained from 46 patients undergoing aortic valve replacement surgery and used for mRNA extraction followed by quantitative real-time PCR to correlate the
PARP-1
expression levels with the non invasive hemodynamic parameters quantifying the stenosis severity. Primary isolated valvular interstitial cells (VICs) were used to explore the effects of cytokines and leukotriene C(4) (LTC(4)) on valvular
PARP-1
expression. The thickened areas of stenotic valves with tricuspid morphology expressed significantly higher levels of
PARP-1
mRNA compared with the corresponding part of
bicuspid
valves (0.501 vs 0.243, P=0.01). Furthermore, the quantitative gene expression levels of
PARP-1
were inversely correlated with the aortic valve area (AVA) (r=-0.46, P=0.0469) and AVA indexed for body surface area (BSA) (r=-0.498; P=0.0298) only in tricuspid aortic valves. LTC(4) (1nM) significantly elevated the mRNA levels of
PARP-1
by 2.38-fold in VICs. Taken together, these data suggest that valvular DNA-damage pathways may be associated with inflammation and the stenosis severity in tricuspid aortic valves.
...
PMID:Increased transcript level of poly(ADP-ribose) polymerase (PARP-1) in human tricuspid compared with bicuspid aortic valves correlates with the stenosis severity. 2245 Mar 22
