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Yıl:2012; Cilt: 1; Sayı: 2>> Özet
TAM METİN
NPAkademi; 2012;1(2):12-16
Majör Depresyonda Duloksetinin Tedavisel Kan Düzeyini Etkileyen Etkenler
E Özten, GH Sayar, N Dilbaz, G Kağan, E Sağlam, N Tarhan
Nöropsikiyatri İstanbul Hastanesi, İstanbul
Amaç: Duloksetin çifte etki mekanizmasına sahip (seçici serotonin ve norepinefrin geri alım inhibitörü) bir antidepresandır. Araştırmalar, duloksetin için önerilen kan düzeyini 20-80 ng/mL olarak vermektedir. Bu çalışmada 30-90 mg/gün dozlarında kullanılmış olan oral duloksetinin farmakokinetiğinin incelenmesi amaçlanmıştır. Yöntem: Ayaktan izlenen depresyon hastalarında kararlı düzeye ulaşmış olan duloksetin kan düzeyleri sıvı kromatografi-kütle spektroskopi tekniği ile ölçülmüştür. Hastalar 30-90 mg/gün oral duloksetini günde tek doz olarak kullanmaktaydı. Hastaların klinik iyileşmesi ve ilacı tolere etmelerine göre, duloksetin dozları esnek biçimde klinisyence ayarlanmıştı. Çalışma grubunda 60 kadın ve 53 erkek bulunmaktaydı. Duloksetinin kan düzeyleri tedavinin 7.-180. Günleri arasında bir dönemde, son ilaç dozundan 24 saat sonra ölçüldü. Bulgular: Sigara içenlerde günlük duloksetin dozu daha yüksekken, duloksetinin kan düzeylerinde sigara içmeyenlere göre farklılık saptanmadı. Vücut ağırlığı ve yaşın duloksetinin farmakokinetik parametrelerine etkisi gözlenmedi. Sonuç: Araştırma sonuçlarına göre duloksetin kan düzeyi ile klinik yanıtı ilişkili değildir. Ancak sigara içenler içmeyenlere göre daha yüksek dozlara gereksinme duymaktadır.
Factors Related To Therapeutic Drug Levels of Duloxetin In Major Depression
Introduction: Duloxetine is a dual acting antidepressant (selective serotonin and norepinephrine reuptake inhibitor). Existing data suggest that the advisable therapeutic serum level of duloxetine ranges between 20 and 80 ng/mL. This study aimed to evaluate pharmacokinetics of oral duloxetine used in a dose range of 30-90 mg/day. Methods: In a naturalistic setting we determined duloxetine serum levels within a steady state in a sample of depressive outpatients by liquid chromatography mass spectrometry (LC/MS). Patients received flexible duloxetine doses of 30-90 mg once daily, with dose changes made based on clinical improvement and tolerability. The study population consisted of 60 females and 53 males. Plasma duloxetine levels were assayed on the 7th-180th day of treatment, 24 hour after the last dose. Results: Smokers showed a considerably higher dosage of duloxetine, but their serum level of duloxetine was not differed from nonsmoking group. Body weight and age did not significantly affect duloxetine pharmacokinetic parameters. Conclusion: This research suggests that therapeutic response is not associated with serum levels of duloxetine. However, compared to nonsmokers, smokers require higher doses.

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