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Dopamine inhibits the aldosterone response to upright posture.

Dopamine inhibits the aldosterone response to upright posture. Research Abstract Details 

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  • Dopamine inhibits the aldosterone response to upright posture. Abstract Text:

    c d malchoffC D Malchoff,j hughesJ Hughes,s senS Sen,s jacksonS Jackson,r m careyR M Carey,

    Aldosterone secretion in man is stimulated by potassium, ACTH, and angiotensin II and is inhibited by dopamine (DA). In normal sodium-replete supine individuals, aldosterone secretion is under maximum tonic inhibition by DA. Dopaminergic control of aldosterone secretion is modified by dietary sodium depletion. To determine the physiological significance of dopaminergic inhibition of aldosterone secretion, we studied the effect of DA on the aldosterone response to upright posture. Twelve normal men were studied while eating an ad libitum sodium diet, and the effect of DA was determined in the supine and upright positions. Plasma aldosterone (PAC), plasma cortisol (F), plasma aldosterone-stimulating factor (ASF), PRA, and blood pressure were measured while the men were supine and after 4 h of upright posture during an infusion of 5% dextrose vehicle and during a DA infusion of 4.0 micrograms/kg X min. The men also were studied as a time control in the supine position while receiving vehicle or DA. PAC increased from a mean basal value of 20.4 +/- 3.2 ng/dl (+/- SE) by 25.9 +/- 5.1 ng/dl to a peak of 44.4 +/- 2.4 ng/dl in response to upright posture during vehicle infusion. The PAC response to upright posture was reduced to 7.4 +/- 1.8 ng/dl (P less than 0.05) when DA was infused. The increase in PRA with upright posture was 3.7 +/- 1.3 ng/ml X h during the vehicle infusion and 4.1 +/- 1.1 ng/ml X h (P = NS) during the DA infusion. ASF, F, and blood pressure were not altered by upright posture and DA. PAC did not change in the six men infused with DA while supine. Therefore, DA inhibits upright aldosterone responses without affecting PRA, ASF, or F.

    Dopamine inhibits the aldosterone response to upright posture. Publishing Authors By Initials

    cd malchoffCD Malchoff,j hughesJ Hughes,s senS Sen,s jacksonS Jackson,rm careyRM Carey,

    For similar enzymes and coenzymes: enzymes: hydrolases: peptide hydrolases: endopeptidases: aspartic endopeptidases: renin research abstracts see: enzymes and coenzymes: enzymes: hydrolases: peptide hydrolases: endopeptidases: aspartic endopeptidases: renin research

    PUBMED ID PMID:

    MEDLINE DATE:

    Dopamine inhibits the aldosterone response to upright posture. Journal Published:

    PUBLICATION TYPE: Research Support, U.S. Gov't,

    Journal: The Journal of clinical endocrinology and metaboli

    VOLUME: 63

    Page Numbers: 197-201

    Journal Abbreviation: J. Clin. Endocrinol. Metab.

    ISSN: 0021-972X

    DAY: 19

    MONTH: Jul

    YEAR: 1986

    Dopamine inhibits the aldosterone response to upright posture. Information

    Number of References:

    LANGUAGE: eng

    NlmUniqueID: 375362

    Dopamine inhibits the aldosterone response to upright posture. Keywords Mesh Terms:

    KEYWORDS: Renin

    MESH TERMS: blood

    Chemical & Substance for Abstract: Dopamine inhibits the aldosterone response to upright posture. Information

    Substance Name: Renin

    Registry Number: EC 3.4.23.15

    Grant and Affiliation Information for Dopamine inhibits the aldosterone response to upright posture.

    AFFILIATION:

    Country: UNITED STATES

    UNITED STATES Research PublicationUNITED STATES Research Publication

    AGENCY: United States NCRR

    GRANT: RR-847

    ACRONYM: RR

    MEDLINETA: J Clin Endocrinol Metab

    REFSOURCE:

    DATABASENAME:

    ACCESSION NUMBER:

    Number Hits: 0

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