Abstract:
PURPOSE:To characterize the interaction between tiagabine (TGB) and valproate (VPA)--two antiepileptic drugs in the mouse pentylenetetrazole (PTZ)-induced clonic seizure model, type I isobolographic analysis for non-parallel dose-response relationship curves (DRRCs) was used. MATERIAL AND METHODS:Clonic seizures were evoked in albino Swiss mice by subcutaneous injection of PTZ at its CD97 (100 mg/ kg). To ascertain the nature of interaction between TGB and VPA administered in combination, total brain concentrations of TGB and VPA were estimated by using high-performance liquid chromatography (HPLC) and fluorescence polarization immunoassay (FPIA). RESULTS:TGB and VPA produced clear-cut anticonvulsant effects against PTZ-induced clonic seizures in mice and their DRRCs were not parallel to one another. The type I isobolographic analysis for non-parallel DRRCs revealed that the combination of TGB with VPA at the fixed-ratio of 1:1 exerted additive interaction against PTZ-induced clonic seizures in mice. With FPIA, it was found that TGB did not affect total brain VPA concentrations in experimental animals. Moreover, VPA had no significant impact on total brain concentrations of TGB in mice, as measured with HPLC. CONCLUSION:The additive interaction between TGB and VPA at the fixed-ratio of 1:1 in the mouse PTZ model was pharmacodynamic in nature.
journal_name
Adv Med Scijournal_title
Advances in medical sciencesauthors
Luszczki JJ,Krzyzanowski M,Swiader MJdoi
10.2478/v10039-009-0006-7subject
Has Abstractpub_date
2009-01-01 00:00:00pages
75-81issue
1eissn
1896-1126issn
1898-4002pii
Q22830U1133M218Hjournal_volume
54pub_type
杂志文章abstract:BACKGROUND:Current risk stratification after acute myocardial infarction (MI) depends on left ventricular ejection fraction. Microvolt T-wave alternans (MTWA) is one of promising markers to predict cardiac events in patients after acute MI treated according to current guidelines. METHODS:In this single center study, 1...
journal_title:Advances in medical sciences
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abstract:PURPOSE:The study aimed to examine the volumes of cerebellum and the brain stem in children with cerebral palsy (CP). MATERIAL AND METHODS:The present study included 21 children with spastic diplegic CP (11 girls and 10 boys). Twenty-one patients with CP were age- and gender-matched with the control patients. All subj...
journal_title:Advances in medical sciences
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journal_title:Advances in medical sciences
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journal_title:Advances in medical sciences
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journal_title:Advances in medical sciences
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journal_title:Advances in medical sciences
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journal_title:Advances in medical sciences
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更新日期:2011-01-01 00:00:00
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journal_title:Advances in medical sciences
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更新日期:2015-09-01 00:00:00
abstract:PURPOSE:It is essential in the medical care for immunocompromised patients that the environment should create minimal infection risk. Particularly, it concerns fungal infections. Fungi belonging to the Aspergillus genus are second frequent group of nosocomial pathogens producing opportunistic infections. MATERIAL AND ...
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journal_title:Advances in medical sciences
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journal_title:Advances in medical sciences
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更新日期:2016-03-01 00:00:00
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journal_title:Advances in medical sciences
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