Abstract:
:We examined how growth hormone-releasing factor (GRF) regulated pituitary GRF receptor gene expression in the conscious rat. GRF receptor mRNA levels were significantly increased by immunoneutralization of endogenous GRF with its specific antiserum. This effect was dose dependent and the maximum level was 3.8-fold higher than that in control rats. A similar rise in GRF receptor gene expression was obtained by the depletion of noradrenaline, a neurotransmitter thought to stimulate GRF release, and was reversed by 87% by the repeated administration of synthetic GRF. These results indicate that pituitary GRF receptor gene expression was up- or down-regulated in vivo in the absence or presence of GRF, respectively.
journal_name
Biochem Biophys Res Communjournal_title
Biochemical and biophysical research communicationsauthors
Miki N,Ono M,Murata Y,Ohsaki E,Tamitsu K,Yamada M,Demura Hdoi
10.1006/bbrc.1996.1068subject
Has Abstractpub_date
1996-07-16 00:00:00pages
586-90issue
2eissn
0006-291Xissn
1090-2104pii
S0006-291X(96)91068-2journal_volume
224pub_type
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