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2015 ; 8
(3
): 2700-9
Nephropedia Template TP
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English Wikipedia
Notoginsenoside R1 reduces blood pressure in spontaneously hypertensive rats
through a long non-coding RNA AK094457
#MMPMID26045775
Yang Y
; Xi P
; Xie Y
; Zhao C
; Xu J
; Jiang J
Int J Clin Exp Pathol
2015[]; 8
(3
): 2700-9
PMID26045775
show ga
Notoginsenoside R1 (NR1) is the main bioactive component in panaxnotoginseng, an
old herb medicine widely used in Asian countries in the treatment of
microcirculatory diseases. However, little is known about the effect of NR1 on
antihypertension and the underlying mechanisms are still not clear. This study is
aim to investigate the effect and elicit the mechanism of NR1 in
antihypertension. Firstly, to assess the ability of NR1 in antihypertension, NR1
was injected in spontaneously hypertensive rats (SHR) via the vena caudalis. Then
we examined the rats systolic blood pressure and inducible nitric oxide synthase
(iNOS) activation in rats thoracoabdominal aortic. To further investigate the
molecular mechanism of NR1 reduce blood pressure, primary SHR and WYK rat
vascular endothelial cells (RVECs) were used for next study. LncRNAs related to
hypertension were gained from bioinformatics analysis. The role of LncRNAs was
finally characterized in RVECs by siRNA. Our results showed that NR1
significantly reduce blood pressure in SHR and induce nitric oxide (NO)
generation through increasing the phosphorylation of iNOS. Through bioinformatics
analysis and knockdown LncRNA AK094457 in RVECs, we also found LncRNA AK094457
promoted iNOS expression and NO concentration. Thus, we conclude that NR1 reduces
the caudal blood pressure of SHR through induction of iNOS regulated by long
non-coding RNA AK094457. These findings may have important implications for
understanding the mechanisms of NR1 regulation blood pressure.