Dihydralazine therapy and acetylator phenotype. 1979

E Iisalo, and T Laine, and A Lehtonen, and R Sellman

The acetylator phenotype was studied in 21 hypertensive patients receiving chronic treatment with dihydralazine and other antihypertensive drugs. Plasma dihydralazine concentrations were measured 6 hours after the morning dose of the drug. There were no significant differences between the slow and fast acetylators 1) in the daily dose of dihydralazine needed, 2) in the concentrations of dihydralazine achieved in plasma, 3) in the dose/concentration-relationship of dihydralazine or 4) in the appearance of side effects. Antinuclear antibodies were found in five patients. Four of them were fast acetylators. The lowest dose/concentration relationship was found in a patient with impaired renal function. According to these results the acetylator phenotype seems to be an unimportant factor in therapy with dihydralazine. More investigation will be needed in order to elucidate the metabolism of dihydralazine.

UI MeSH Term Description Entries
D006973 Hypertension Persistently high systemic arterial BLOOD PRESSURE. Based on multiple readings (BLOOD PRESSURE DETERMINATION), hypertension is currently defined as when SYSTOLIC PRESSURE is consistently greater than 140 mm Hg or when DIASTOLIC PRESSURE is consistently 90 mm Hg or more. Blood Pressure, High,Blood Pressures, High,High Blood Pressure,High Blood Pressures
D008297 Male Males
D008875 Middle Aged An adult aged 45 - 64 years. Middle Age
D010641 Phenotype The outward appearance of the individual. It is the product of interactions between genes, and between the GENOTYPE and the environment. Phenotypes
D003404 Creatinine Creatinine Sulfate Salt,Krebiozen,Salt, Creatinine Sulfate,Sulfate Salt, Creatinine
D004078 Dihydralazine 1,4-Dihydrazinophthalazine. An antihypertensive agent with actions and uses similar to those of HYDRALAZINE. (From Martindale, The Extra Pharmacopoeia, 30th ed, p354) Depressan,Dihydralazine Sulfate,Dihydrallazine,Dihydrazinophthalazin,Sulfate, Dihydralazine
D005260 Female Females
D006801 Humans Members of the species Homo sapiens. Homo sapiens,Man (Taxonomy),Human,Man, Modern,Modern Man
D006830 Hydralazine A direct-acting vasodilator that is used as an antihypertensive agent. Hydrallazin,Apresoline,Apressin,Apressoline,Hydralazine Hydrochloride,Hydralazine mono-Hydrochloride,Hydrazinophthalazine,Nepresol,Hydralazine mono Hydrochloride,Hydrochloride, Hydralazine,mono-Hydrochloride, Hydralazine
D000107 Acetylation Formation of an acetyl derivative. (Stedman, 25th ed) Acetylations

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