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100 _a20220225a2017 k y0engy50 ba
101 0 _aeng
102 _aUS
135 _adrcn ---uucaa
181 0 _ai
182 0 _ab
200 1 _aDried blood spot analysis for therapeutic drug monitoring of Clozapine
_fL. M. Geers, D. Cohen, L. M. Wehkamp [et al.]
203 _aText
_celectronic
300 _aTitle screen
330 _aBACKGROUND: Schizophrenia is a psychiatric disorder that affects approximately 0.4%-1% of the population worldwide. Diagnosis of schizophrenia is based primarily on Diagnostic and Statistical Manual of Mental Disorders, Fifth Edition (DSM-5) criteria. Clozapine is an antipsychotic drug that is mainly used in the treatment of schizophrenia patients who are refractory or intolerant to at least 2 other antipsychotics. Due to the high variability in pharmacokinetics of clozapine, therapeutic drug monitoring (TDM) is highly recommended for clozapine therapy. OBJECTIVE:To develop and clinically validate a novel sampling method using dried blood spot (DBS) to support TDM of clozapine and norclozapine. METHODS:From June 2014 to September 2014, 15 schizophrenia patients (18-55 years) treated with clozapine were included. Plasma, DBS samples made from venous samples (VDBS), and finger prick DBS (DBS) samples were obtained before administration and 2, 4, 6, and 8 hours after clozapine intake.
330 _aThe study was repeated in 6 Russian patients for external validation. Passing-Bablok regression and Bland-Altman analysis were used to compare the DBS, VDBS, and plasma results for clozapine and norclozapine. RESULTS:The DBS validation results showed good linearity over the concentration time curve measured for clozapine and norclozapine. The accuracy and between- and within-day precision variation values were within accepted ranges. Different blood spot volumes and hematocrit values had no significant influence on the results. The DBS samples were stable at 20°C and 37°C for 2 weeks and at -20°C for 2 years. The mean clozapine and norclozapine DBS/plasma ratios were, respectively, 0.80 (95% CI, 0.76 to 0.85) and 1.063 (95% CI, 1.027 to 1.099) in Dutch patients. The mean clozapine DBS/DPS ratio in Russian patients was 0.70 (95% CI, 0.64 to 0.76). CONCLUSION:DBS analysis is a reliable tool for blood sampling and performing TDM of clozapine and norclozapine in daily practice and substantially extends the opportunities for TDM of clozapine.
333 _aРежим доступа: по договору с организацией-держателем ресурса
461 _tThe Journal of Clinical Psychiatry
463 _tVol. 78, iss. 9
_v[P. 1211-1218]
_d2017
610 1 _aэлектронный ресурс
610 1 _aтруды учёных ТПУ
610 1 _aкровь
610 1 _aмониторинг
610 1 _aпсихические расстройства
610 1 _aшизофрения
610 1 _aдиагностика
610 1 _aантипсихотические препараты
701 1 _aGeers
_bL. M.
701 1 _aCohen
_bD.
701 1 _aWehkamp
_bL. M.
701 1 _avan Hateren
_bK.
701 1 _aKoster
_bR. A.
701 1 _aFedorenko
_bO. Yu.
_cspecialist in the field of ecology and life safety
_cProfessor of Tomsk Polytechnic University, doctor of medical sciences
_f1973-
_gOlga Yurievna
_2stltpush
_3(RuTPU)RU\TPU\pers\33861
701 1 _aSemke
_bA. V.
701 1 _aBokhan
_bN.
701 1 _aIvanova
_bS. A.
_cspecialist in the field of ecology and life safety
_cProfessor of Tomsk Polytechnic University, doctor of medical sciences
_f1964-
_gSvetlana Aleksandrovna
_2stltpush
_3(RuTPU)RU\TPU\pers\33859
701 1 _aKosterink
_bJ. G. W.
_gJos
701 1 _aLoonen
_bA. J. M.
_gAnton
701 1 _aTouw
_bD. J.
712 0 2 _aНациональный исследовательский Томский политехнический университет
_bИнженерная школа неразрушающего контроля и безопасности
_bОтделение контроля и диагностики
_h7978
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801 2 _aRU
_b63413507
_c20220225
_gRCR
856 4 _uhttp://doi.org/10.4088/jcp.16m11164
942 _cCF