Warning: file_get_contents(https://eutils.ncbi.nlm.nih.gov/entrez/eutils/elink.fcgi?dbfrom=pubmed&id=26781276
&cmd=llinks): Failed to open stream: HTTP request failed! HTTP/1.1 429 Too Many Requests
in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 215
Deprecated: Implicit conversion from float 229.6 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534
Deprecated: Implicit conversion from float 229.6 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534
Deprecated: Implicit conversion from float 229.6 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534
Deprecated: Implicit conversion from float 229.6 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534
Deprecated: Implicit conversion from float 229.6 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534
Deprecated: Implicit conversion from float 229.6 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534
Deprecated: Implicit conversion from float 229.6 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534
Deprecated: Implicit conversion from float 263.2 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\26781276
.jpg): Failed to open stream: No such file or directory in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 117 Hypertension
2016 ; 67
(3
): 661-8
Nephropedia Template TP
gab.com Text
Twit Text FOAVip
Twit Text #
English Wikipedia
Low-Salt Diet and Circadian Dysfunction Synergize to Induce Angiotensin
II-Dependent Hypertension in Mice
#MMPMID26781276
Pati P
; Fulton DJ
; Bagi Z
; Chen F
; Wang Y
; Kitchens J
; Cassis LA
; Stepp DW
; Rudic RD
Hypertension
2016[Mar]; 67
(3
): 661-8
PMID26781276
show ga
Blood pressure exhibits a robust circadian rhythm in health. In hypertension,
sleep apnea, and even shift work, this balanced rhythm is perturbed via
elevations in night-time blood pressure, inflicting silent damage to the
vasculature and body organs. Herein, we examined the influence of circadian
dysfunction during experimental hypertension in mice. Using radiotelemetry to
measure ambulatory blood pressure and activity, the effects of angiotensin II
administration were studied in wild-type (WT) and period isoform knockout (KO)
mice (Per2-KO, Per2, 3-KO, and Per1, 2, 3-KO/Per triple KO [TKO] mice). On a
normal diet, administration of angiotensin II caused nondipping blood pressure
and exacerbated vascular hypertrophy in the Period isoform KO mice relative to WT
mice. To study the endogenous effects of angiotensin II stimulation, we then
administered a low-salt diet to the mice, which does stimulate endogenous
angiotensin II in addition to lowering blood pressure. A low-salt diet decreased
blood pressure in wild-type mice. In contrast, Period isoform KO mice lost their
circadian rhythm in blood pressure on a low-salt diet, because of an increase in
resting blood pressure, which was restorable to rhythmicity by the angiotensin
receptor blocker losartan. Chronic administration of low salt caused vascular
hypertrophy in Period isoform KO mice, which also exhibited increased renin
levels and altered angiotensin 1 receptor expression. These data suggest that
circadian clock genes may act to inhibit or control renin/angiotensin signaling.
Moreover, circadian disorders such as sleep apnea and shift work may alter the
homeostatic responses to sodium restriction to potentially influence nocturnal
hypertension.