Linked Life Data

9408809

Source:http://linkedlifedata.com/resource/pubmed/id/9408809

Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
6
pubmed:dateCreated
1998-2-6
pubmed:abstractText
The relationship between therapeutic response to racemic mianserin and steady-state plasma concentrations of S(+)- and R(-)-mianserin was studied in 26 Japanese patients with major depression. The daily dose of mianserin was 30 mg, and the duration of treatment was 3 weeks. Regarding S-mianserin, the proportion of responders (final Montgomery-Asberg Depression Rating Scale score of 10 or less) was significantly higher in the plasma concentration range of 10 to 23 ng/mL than outside (10 of 11 vs. 3 of 15, p = 0.0005). Such a plasma concentration difference between responders and nonresponders was not found for R-mianserin. In 15 patients, the relationships between the CYP2D6 genotype, determined by allele-specific polymerase chain reaction analysis and Escherichia coli RI restriction fragment length polymorphism, plasma concentrations of the enantiomers, and the therapeutic response were studied. Five patients were homozygous for the wild type (wt) allele (wt/wt), nine were heterozygous for the CYP2D6Ch (Ch) allele causing decreased CYP2D6 activity (Ch/wt), and one patient was heterozygous for the Ch allele and the defect allele CYP2D6D (D) (Ch/D). The Ch/wt group showed significantly higher plasma concentrations of S-mianserin (mean +/- SD: 15 +/- 6 vs. 8 +/- 1 ng/mL, p = 0.007) and proportion of responders (8 of 9 vs. 1 of 5, p = 0.023) than the wt/wt group. The patient with the Ch/D genotype had the highest plasma concentration of S-mianserin (37 ng/mL) and a poor response. No significant relationship was found between the CYP2D6 genotype and plasma concentration of R-mianserin. The study presented here thus suggests that the CYP2D6 genotype plays a major role in controlling plasma concentration of the S-enantiomer of mianserin, which contributes to a major extent to the antidepressant effect during mianserin treatment.
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
Dec
pubmed:issn
0271-0749
pubmed:author
pubmed:issnType
Print
pubmed:volume
17
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
467-71
pubmed:dateRevised
2006-11-15
pubmed:meshHeading
pubmed:year
1997
pubmed:articleTitle
The CYP2D6 genotype and plasma concentrations of mianserin enantiomers in relation to therapeutic response to mianserin in depressed Japanese patients.
pubmed:affiliation
Department of Neuropsychiatry, Hirosaki University Hospital, Japan.
pubmed:publicationType
Journal Article, Clinical Trial, Comparative Study, Research Support, Non-U.S. Gov't