Deprecated: Implicit conversion from float 233.6 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534
Deprecated: Implicit conversion from float 233.6 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534
Deprecated: Implicit conversion from float 233.6 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534
Deprecated: Implicit conversion from float 233.6 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534
Deprecated: Implicit conversion from float 233.6 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534
Deprecated: Implicit conversion from float 233.6 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534
Deprecated: Implicit conversion from float 267.2 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534
Deprecated: Implicit conversion from float 267.2 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534
Deprecated: Implicit conversion from float 267.2 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534
Deprecated: Implicit conversion from float 267.2 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534
Deprecated: Implicit conversion from float 267.2 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534
Warning: imagejpeg(C:\Inetpub\vhosts\kidney.de\httpdocs\phplern\25069665
.jpg): Failed to open stream: No such file or directory in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 117 Hypertension
2014 ; 64
(5
): 1131-40
Nephropedia Template TP
gab.com Text
Twit Text FOAVip
Twit Text #
English Wikipedia
Novel mechanism of blood pressure regulation by forkhead box class O1-mediated
transcriptional control of hepatic angiotensinogen
#MMPMID25069665
Qi Y
; Zhang K
; Wu Y
; Xu Z
; Yong QC
; Kumar R
; Baker KM
; Zhu Q
; Chen S
; Guo S
Hypertension
2014[Nov]; 64
(5
): 1131-40
PMID25069665
show ga
The renin-angiotensin system is a major determinant of blood pressure regulation.
It consists of a cascade of enzymatic reactions involving 3 components:
angiotensinogen, renin, and angiotensin-converting enzyme, which generate
angiotensin II as a biologically active product. Angiotensinogen is largely
produced in the liver, acting as a major determinant of the circulating
renin-angiotensin system, which exerts acute hemodynamic effects on blood
pressure regulation. How the expression of angiotensinogen is regulated is not
completely understood. Here, we hypothesize that angiotensinogen is regulated by
forkhead transcription factor forkhead box class O1 (Foxo1), an
insulin-suppressed transcription factor, and thereby controls blood pressure in
mice. We generated liver-specific Foxo1 knockout mice, which exhibited a
reduction in plasma angiotensinogen and angiotensin II levels and a significant
decrease in blood pressure. Using hepatocyte cultures, we demonstrated that
overexpression of Foxo1 increased angiotensinogen expression, whereas hepatocytes
lacking Foxo1 demonstrated a reduction of angiotensinogen gene expression and
partially impaired insulin inhibition on angiotensinogen gene expression.
Furthermore, mouse angiotensinogen prompter analysis demonstrated that the
angiotensinogen promoter region contains a functional Foxo1-binding site, which
is responsible for both Foxo1 stimulation and insulin suppression on the promoter
activity. Together, these data demonstrate that Foxo1 regulates hepatic
angiotensinogen gene expression and controls plasma angiotensinogen and
angiotensin II levels, modulating blood pressure control in mice.