Renal nerve stimulation causes alpha 1-adrenoceptor-mediated sodium retention but not alpha 2-adrenoceptor antagonism of vasopressin.
Renal nerve stimulation causes alpha 1-adrenoceptor-mediated sodium retention but not alpha 2-adrenoceptor antagonism of vasopressin.
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肾神经刺激引起α1-肾上腺素受体介导的钠潴留,但不引起加压素的α2-肾上腺素受体拮抗作用。
DOI:
10.1161/01.res.57.2.304
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发表时间:
1985
影响因子:
20.1
通讯作者:
Pettinger,WA
中科院分区:
文献类型:
--
作者:
Smyth,DD;Umemura,S;Pettinger,WA
Renal alpha 2-adrenoceptor stimulation by epinephrine infusion reverses cyclic adenosine monophosphate-mediated effects of vasopressin on sodium and water excretion. We used this response to determine whether renal nerve stimulation can activate renal alpha 2-adrenoceptors in the non-recirculating isolated perfused rat kidney (Krebs-Henseleit solution; 3.5 g/100 ml Ficoll; 1 g/100 ml albumin; 36 degrees C; propranolol 100 nM). In the presence of alpha 1-adrenoceptor blockade with prazosin (30 nM) alpha 2-adrenoceptor stimulation with epinephrine reversed the cyclic adenosine monophosphate-mediated effects of vasopressin on sodium (P less than 0.05) and water (P less than 0.05) excretion. Subthreshold (for vasoconstriction) renal nerve stimulation (10 V; 1 msec; 0.65 +/- 0.10 Hz) failed to alter the effect of vasopressin. Similarly, higher levels of renal nerve stimulation [plus prazosin (100 nM) or phenoxybenzamine (1.0 mg/kg per hr) to block alpha 1-adrenoceptors] did not activate renal alpha 2-adrenoceptors which are associated with the antagonism of the effects of vasopressin. The same level of subthreshold renal nerve stimulation (0.85 +/- 0.14 Hz) in the absence of vasopressin, and without alpha 1- or alpha 2-adrenoceptor blockade, decreased (P less than 0.05) sodium and water excretion. The reversal of this effect by alpha 1-adrenoceptor blockade (prazosin 30 nM) but not alpha 2-adrenoceptor blockade (yohimbine 300 nM) indicates that this effect of renal nerve stimulation is mediated through alpha 1-adrenoceptors. Thus, subthreshold renal nerve stimulation in the rat kidney induces sodium and water retention through activation of alpha 1-adrenoceptors, as shown by others in the rabbit and dog.(ABSTRACT TRUNCATED AT 250 WORDS)
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DOI:
--
发表时间:
1985
期刊:
The Physiologist
影响因子:
--
作者:
Koepke,JP;DiBona,GF
通讯作者:
DiBona,GF
DOI:
10.1016/0165-1838(82)90008-x
发表时间:
1982
期刊:
Journal of the autonomic nervous system
影响因子:
--
作者:
J. Sadowski;E. Portalska
通讯作者:
E. Portalska
DOI:
--
发表时间:
1977
期刊:
影响因子:
--
作者:
S. Berthelsen;W. Pettinger
通讯作者:
W. Pettinger
影响因子:
3
作者:
LANGER, SZ;HICKS, PE
通讯作者:
HICKS, PE
影响因子:
7.3
作者:
I. Hesse;E. Johns
通讯作者:
E. Johns