Sleep-associated changes in interleukin-1beta mRNA in the brain.
Much evidence implicates interleukin-1beta (IL-1beta) in sleep regulation. Two previous studies indicated that levels of IL-1beta in mRNA were affected by sleep. In the current study, levels of IL-1beta mRNA and IL-1 receptor assessory protein (IL-1RAP) mRNA were determined 1 h after the beginning of light and dark periods and after sleep deprivation, using the reverse transcriptase-polymerase chain reaction (RT-PCR) and mutated internal standards. Daytime samples contained relatively more IL-1beta mRNA than nighttime samples, and levels of IL-1beta mRNA were higher after sleep deprivation. These changes occurred in the hypothalamus, hippocampus, cerebral cortex, and mesencephalon/pons. In contrast, the IL-1 RAP mRNA level did not seem to be affected by sleep.
Taishi
P
P
Department of Veterinary and Comparative Anatomy, Pharmacology and Physiology, Washington State University, Pullman 99164-6520, USA.
Chen
Z
Z
Obál
F
F
Hansen
M K
MK
Zhang
J
J
Fang
J
J
Krueger
J M
JM
D000818:Animals; D001921:Brain / Q000378:metabolism*; D007375:Interleukin-1 / Q000235:genetics*; D008297:Male; D012333:RNA, Messenger / Q000096:biosynthesis*; D051381:Rats; D017207:Rats, Sprague-Dawley; D020133:Reverse Transcriptase Polymerase Chain Reaction; D015398:Signal Transduction / Q000502:physiology; D012890:Sleep / Q000502:physiology*; D012892:Sleep Deprivation / Q000502:physiology*
D007375:Interleukin-1; D012333:RNA, Messenger