Deprecated: Implicit conversion from float 211.6 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534
Deprecated: Implicit conversion from float 211.6 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534
Deprecated: Implicit conversion from float 211.6 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534
Deprecated: Implicit conversion from float 211.6 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534
Deprecated: Implicit conversion from float 211.6 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534
Deprecated: Implicit conversion from float 211.6 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534
Deprecated: Implicit conversion from float 211.6 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534
Deprecated: Implicit conversion from float 211.6 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534
Deprecated: Implicit conversion from float 245.2 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534
Deprecated: Implicit conversion from float 245.2 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534
Deprecated: Implicit conversion from float 245.2 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\26194231
.jpg): Failed to open stream: No such file or directory in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 117 Sci+Rep
2015 ; 5
(ä): 12310
Nephropedia Template TP
gab.com Text
Twit Text FOAVip
Twit Text #
English Wikipedia
Circadian and ultradian rhythms of clock gene expression in the suprachiasmatic
nucleus of freely moving mice
#MMPMID26194231
Ono D
; Honma K
; Honma S
Sci Rep
2015[Jul]; 5
(ä): 12310
PMID26194231
show ga
In mammals, the temporal order of physiology and behavior is primarily regulated
by the circadian pacemaker located in the hypothalamic suprachiasmatic nucleus
(SCN). Rhythms are generated in cells by an auto-regulatory
transcription/translation feedback loop, composed of several clock genes and
their protein products. Taking advantage of bioluminescence reporters, we have
succeeded in continuously monitoring the expression of clock gene reporters
Per1-luc, PER2::LUC and Bmal1-ELuc in the SCN of freely moving mice for up to 3
weeks in constant darkness. Bioluminescence emitted from the SCN was collected
with an implanted plastic optical fiber which was connected to a cooled
photomultiplier tube. We found robust circadian rhythms in the clock gene
expression, the phase-relation of which were the same as those observed ex vivo.
The circadian rhythms were superimposed by episodic bursts which had ultradian
periods of approximately 3.0 h. Episodic bursts often accompanied activity bouts,
but stoichiometric as well as temporal analyses revealed no causality between
them. Clock gene expression in the SCN in vivo is regulated by the circadian
pacemaker and ultradian rhythms of unknown origin.