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PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
16
pubmed:dateCreated
1986-1-15
pubmed:abstractText
Mean arterial blood pressure, forearm vascular resistance, plasma norepinephrine, plasma renin activity and aldosterone responses to graded lower body negative pressure and tilt at 80 degrees were examined in 10 men with mild to moderate essential hypertension before and after 12 weeks of diltiazem (240 to 360 mg/day) therapy. Diltiazem therapy lowered basal supine systolic and diastolic blood pressures without affecting basal heart rate. Mean arterial blood pressure and forearm vascular resistance were decreased from 114 +/- 1.5 to 105 +/- 1 mm Hg, p less than 0.01 and from 29.3 +/- 3.5 to 18.9 +/- 2.1 units, p less than 0.01, respectively. Diltiazem therapy had no effect on basal supine levels of norepinephrine, plasma renin activity or aldosterone, nor on the responses of these hormones to lower body negative pressure. Diltiazem did decrease the forearm vascular resistance responses to lower body negative pressure and tilt. Diltiazem abolished an orthostatic increase (10 +/- 0.3 mm Hg) in mean arterial blood pressure and this was associated with a greater plasma norepinephrine response to tilt. These results suggest that diltiazem decreases vascular resistance through a reduction in the postjunctional effects of norepinephrine on vascular smooth muscle.
pubmed:grant
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
AIM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
Dec
pubmed:issn
0002-9149
pubmed:author
pubmed:issnType
Print
pubmed:day
6
pubmed:volume
56
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
28H-33H
pubmed:dateRevised
2007-11-15
pubmed:meshHeading
pubmed-meshheading:3907320-Adult, pubmed-meshheading:3907320-Aged, pubmed-meshheading:3907320-Aldosterone, pubmed-meshheading:3907320-Benzazepines, pubmed-meshheading:3907320-Blood Pressure, pubmed-meshheading:3907320-Diltiazem, pubmed-meshheading:3907320-Forearm, pubmed-meshheading:3907320-Heart Rate, pubmed-meshheading:3907320-Hemodynamics, pubmed-meshheading:3907320-Humans, pubmed-meshheading:3907320-Hypertension, pubmed-meshheading:3907320-Lower Body Negative Pressure, pubmed-meshheading:3907320-Male, pubmed-meshheading:3907320-Middle Aged, pubmed-meshheading:3907320-Muscle, Smooth, Vascular, pubmed-meshheading:3907320-Norepinephrine, pubmed-meshheading:3907320-Posture, pubmed-meshheading:3907320-Renin, pubmed-meshheading:3907320-Renin-Angiotensin System, pubmed-meshheading:3907320-Vascular Resistance
pubmed:year
1985
pubmed:articleTitle
Effects of diltiazem on hormonal and hemodynamic responses to lower body negative pressure and tilt in patients with mild to moderate systemic hypertension.
pubmed:publicationType
Journal Article, Research Support, U.S. Gov't, P.H.S., Research Support, U.S. Gov't, Non-P.H.S.