Arzneimittelforschung 2004; 54(9): 629-633
DOI: 10.1055/s-0031-1297061
Bioequivalence Studies
Editio Cantor Verlag Aulendorf (Germany)

Serotonin Reuptake Inhibitors: Bioequivalence of Sertraline Capsules

Rossen Koytchev
a   Cooperative Clinical Drug Research and Development, Neuenhagen, Germany
,
Yildiz Ozalp
b   EIS Eczacıbaşı İlaç Sanayi ve Ticaret A.S., Istanbul, Turkey
,
Aydin Erenmemisoglu
c   Erciyes University School of Medicine, Kayseri, Turkey
,
Mike John van der Meer
d   Trident Bioanalytics Ltd., Cork, Ireland
,
Recep Serdar Alpan
b   EIS Eczacıbaşı İlaç Sanayi ve Ticaret A.S., Istanbul, Turkey
› Author Affiliations
Further Information

Publication History

Publication Date:
25 December 2011 (online)

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Summary

The study was designed to evaluate the bioavailability of two sertraline (CAS 79617-96-2) formulations. A bioequivalence study was carried out in 24 healthy male volunteers, who were administered 50 mg capsules of the test formulation (Seralin®) and the originator product (reference) as a single dose. The trial was performed according to an open, randomized, cross-over design with a washout period of 14-20 days in one study center. Blood samples were taken up to 96 h post dose, the plasma was separated and the concentrations of sertraline were determined by HPLC-MS-MS. The mean Cmax were 9.01 ± 2.26 ng/mL and 8.24 ± 2.14 ng/mL, while the mean AUC0–t were 259.09 ± 105.36 ng · h/mL and 234.36 ± 95.18 ng · h/mL for the test and reference formulations, respectively. The mean AUC0–imf were 292.66 ± 128.09 ng · h/mL (test) and 267.23 ± 116.40 ng · h/mL (reference). The mean tmax was 5.88 ± 1.03 h for the test capsules and 6.17 ± 1.66 h for the reference formula. The mean tı/2el was 26.49 ± 6.45 h for the test formulation and 26.23 ± 6.64 h for the reference formulation. Mean MRT values for the test and reference formulations were 28.14 ± 5.37 h and 27.81 ± 5.13 h, respectively. No significant differences of pharmacokinetic parameters between the two studied formulations were found. The 90 % confidence interval for the primary target parameters, intra-individual ratios of AUC0–t and Cmax of sertraline were between 1.03 and 1.19 (AUC0–t) as well as between 1.02 and 1.17 (Cmax) and thus within the acceptance ranges for bioequivalence trials. Concerning the secondary parameter tmax the 90 % confidence interval for the intra-individual differences was between –1.00 and 0.50 h. In the light of the present study it can be concluded that sertraline test capsules are bioequivalent to the reference formulation.

Zusammenfassung

Serotonin-Wiederaufnahmehemmer: Bioäquivalenz von Sertralin-Kapseln

In der vorliegenden Studie sollte die Bioverfügbarkeit von zwei Sertralin (CAS 79617-96-2)-Zubereitungen untersucht werden. Dazu wurde eine Bioäquivalenzstudie an 24 männlichen Probanden durchgeführt, denen 50 mg Sertralin-ent-haltende Kapseln der Testzubereitung (Seralin®) und 50 mg-Kapseln eines Originalprodukts (Referenzzubereitung) oral appliziert wurden. Die Prüfung war als offene, randomisierte, Crossover-Studie mit einmaliger Gabe von Test- und Referenzzubereitung angelegt. Blutentnahmen erfolgten bis zu 96 h nach der Applikation. Im abgetrennten Plasma wurde die Bestimmung der Sertralin-Konzentra-tionen mittels HPLC-MS-MS vorgenommen. Cmax für die Test- bzw. Referenzzubereitung betrug im Mittel 9,01 ± 2,26 ng/mL und 8,24 ±2,14 ng/mL, für die AUC0–t 259,09 ± 105,36 ng · h/mL bzw. 234,36 ± 95,18 ng · h/mL. Der Mittelwert der AUC0–inf betrug 292,66 ± 128,09 ng .h/mL (Test) und 267, 23 ± 116,40 ng · h/mL (Referenz). Bis zum Erreichen maximaler Plasmaspiegel (tmax) vergingen durchschnittlich 5,88 ± 1,03 h (Test) bzw. 6,17 ± 1,66 h (Referenz). Als Mittelwert wurden für t1/2 26,49 ± 6,45 h (Test) bzw. 26,23 ± 6,64 h (Referenz) erhalten. Die MRT (mean residence time) betrug 28,14 ± 5,37 h für die Testzubereitung und 27,81 ± 5,13 h für die Referenz. Hinsichtlich der ermittelten pharmakokinetischen Parameter wurden zwischen beiden Zubereitungen keine signifikanten Unterschiede gefunden. Die 90 %-Konfi-denzintervalle für die primären Zielparameter, die intraindividuellen Quotienten (Test vs. Referenz) von AUC0–t und Cmax, lagen zwischen 1,03 und 1,19 (AUC0–t) und 1,02 und 1,17 (Cmax) und somit innerhalb des Akzeptanzbereiches für Bio-äquivalenzprüfungen. Das 90 %-Konfi-denzintervall des sekundären Zielparameters tmax lag zwischen -1,00 und 0,50 h. Auf der Grundlage der vorliegenden Ergebnisse kann der Schluß gezogen werden, daß die Testzubereitung der Referenzzubereitung bioäquivalent ist.

Özet

Sertralin aktif maddesi içeren iki kapsül formülasyonu ile yapilan klinik biyoeşde-ğerlik çalışması

Bu klinik çalışma sertraline (CAS 79617-96-2) içeren iki kapsül formülasyo-nunun karşılaştırılması amacıyla 24 sağlıklı erkek gönüllü ile yapılmıştır. Çalışma her gönüllüye aç karnına, bir seferde 1 adet 50 mg sertralin kapsül verilerek (tek doz); açık,tek merkezli, randomize, çapraz tasarımlı ve arasında 14-20 günlük temizlenme dönemi olacak sekilde iki periyodlu, olarak gerçekleştirilmiştir. Kan örnekleri ilaç uygulamasını takiben 96 saat içinde alınmış, plazma-lari ayrılmış ve sertralin konsantrasyonları HPLC-MS-MS yöntemi ile ölçülmüştür. Sertralin’ in ortalama Cmax değerleri test ve referans tabletler için sırasıyla 9.01 ± 2.26 ng/mL ve 8.24 ± 2.14 ng/mL, iken, ortalama AUC0–t değerleri sırasıyla 259.09 ± 105.36 ng · h/mL (test) ve 234.36 ± 95.18 ng · h/mıL (referans) olarak bulundu. Ortalama tmax, test ve referans üründe sırasıyla 5.88 ± 1.03 saat ve 6.17 ± 1.66 saat idi. Ortalama t1/2el, test formülasyonu için 26.49 ± 6.45 saat ve referans formülasyon için 26.23 ± 6.64 saat idi. Araştırılan iki ürünün farmakokinetik parametreleri arasında anlamlı farklar saptanmadı. Sertralin’ in birincil hedef parametrelerindeki birey içi oranlarının %90 güven aralığı, AUC0–t için 1.03-1.19 arasinda ve Cmax için 1.02-1.17 arasında olduğundan, kabul edilebilir sınırlar dahilindeydi. İkincil parametre olan tmax ‘ın birey içi farklarının %90 Güven aralığı, -1.00 and 0.50 saat arasındaydı. Mevcut çalışmanın ışığında, değerlendirilen iki sertralin kapsül formülasyo-nunun biyoeşdeğer oldukları sonucuna varıldı.