[Monitoring plasma levels of vitamin D metabolites in simvastatin (Zocor) therapy in patients with familial hypercholesterolemia].
BACKGROUND
Simvastatin is a hypolipidaemic agent, a statin which inhibits cellular cholesterol synthesis by blocking 3HMG CoA reductase. The authors present a report on levels of plasma metabolites of vitamin D after treatment with 10 and 20 mg simvastatin daily in 13 patients, heterozygotes with hypercholesterolaemia during a five-week period.


RESULTS
During simvastatin treatment in all patients plasma levels, of the sum of hydroxylated vitamin D metabolites and 1,25-dihydroxyvitamin D after five weeks of treatment with 10 and 20 mg hypolipidaemic drug were examined. For assessment of vitamin D metabolites radioassay was used which assesses the sum of hydroxylated vitamin D metabolites, and radioimmunoanalysis for assessing the 1,25-dihydroxyvitamin D plasma level. For statistical evaluation the non-parametric Friedman test and simultaneous testing was used.


CONCLUSIONS
Simvastatin raises the plasma levels of the sum of hydroxylated vitamin D metabolites and 1,25-dihydroxyvitamin D in a dose-dependent ratio. The authors recommend to monitor the plasma levels of vitamin D metabolites over a longer time period.
Wilczek
H
H
Sobra
J
J
Ceska
R
R
Justová
V
V
Jůzová
Z
Z
Procházková
R
R
Kvasilová
M
M
D000328:Adult; D002117:Calcitriol / Q000097:blood; D005260:Female; D006801:Humans; D006938:Hyperlipoproteinemia Type II / Q000097:blood* / Q000188:drug therapy; D008148:Lovastatin / Q000031:analogs & derivatives* / Q000627:therapeutic use; D008297:Male; D008875:Middle Aged; D019821:Simvastatin; D014807:Vitamin D / Q000097:blood*
D014807:Vitamin D; D008148:Lovastatin; D019821:Simvastatin; D002117:Calcitriol
Sledování plazmatických hladin metabolitů vitaminu D pri lécbĕ simvastatinem (Zocor) u pacientů s familiární hypercholesterolémií.