Development and validation of an LC-MS/MS method for determination of the L-type voltage-gated calcium channel/NMDA receptor antagonist NGP1-01 in mouse serum.
Animals; Bridged-Ring Compounds/*blood; Calcium Channel Blockers/*blood; Chromatography; LC-MS/MS; Limit of Detection; Liquid/*methods; Mice; Mouse serum; Multifunctional drug; N-Methyl-D-Aspartate/*antagonists & inhibitors; Neuroprotective agent; NGP1-01; Pentacycloundecylamine; Receptors; Reproducibility of Results; Tandem Mass Spectrometry/*methods
NGP1-01 (8-benzylamino-8,11-oxapentacyclo[5.4.0.0(2,6).0(3,10).0(5,9)]undecane) is a heterocyclic cage compound with multifunctional calcium channel blocking activity that has been demonstrated to be neuroprotective in several neurodegenerative models. A sensitive internal standard LC-MS/MS method was developed and validated to quantify NGP1-01 in mouse serum. The internal standard (IS) was
Jogiraju Harini; Zhou Xiang; Gobburi Ashta Lakshmi Prasad; Pedada Kiran K; Geldenhuys Werner J; Van der Schyf Cornelis J; Crish Samuel D; Anderson David J
Journal of chromatography. B, Analytical technologies in the biomedical and life sciences
2014
2014-07
Article information provided for research and reference use only. All rights are retained by the journal listed under publisher and/or the creator(s).
<a href="http://doi.org/10.1016/j.jchromb.2014.05.048" target="_blank" rel="noreferrer noopener">10.1016/j.jchromb.2014.05.048</a>
Synthesis and Biological Evaluation of Pentacycloundecylamines and Triquinylamines as Voltage-Gated Calcium Channel Blockers.
Alicyclic/chemical synthesis/*chemistry/pharmacology; Amines/chemical synthesis/*chemistry/pharmacology; Animals; Apoptosis/drug effects; Calcium Channel Blockers/chemical synthesis/*chemistry/pharmacology; Calcium Channels; Calcium/*metabolism; Cell Survival/drug effects; Hydrocarbons; Hydrogen Peroxide/pharmacology; L-Lactate Dehydrogenase/metabolism; L-type calcium channel (LTCC) blockers; L-Type/*metabolism; Multifunctional drugs; Neurodegeneration; PC12 Cells; Pentacycloundecylamine; Quinones/chemical synthesis/*chemistry/pharmacology; Rats; Structure-Activity Relationship; Triquinylamine
Preclinical studies for neurodegenerative diseases have shown a multi-targeted approach to be successful in the treatment of these complex disorders with several pathoetiological pathways. Polycyclic compounds, such as NGP1-01 (7a), have demonstrated the ability to target multiple mechanisms of the complex etiology and are referred to as multifunctional compounds. These compounds have served as scaffolds with the ability to attenuate Ca(2+) overload and excitotoxicity through several pathways. In this study, our focus was on mitigating Ca(2+) overload through the L-type calcium channels (LTCC). Here, we report the synthesis and biological evaluation of several novel polycyclic compounds. We determined the IC50 values for both the pentacycloundecylamines and the triquinylamines by means of a high-throughput fluorescence calcium flux assay utilizing Fura-2/AM. The potential of these compounds to offer protection against hydrogen peroxide-induced cell death was also evaluated. Overall,
Young Lois-May; Geldenhuys Werner J; Domingo Olwen C; Malan Sarel F; Van der Schyf Cornelis J
Archiv der Pharmazie
2016
2016-04
Article information provided for research and reference use only. All rights are retained by the journal listed under publisher and/or the creator(s).
<a href="http://doi.org/10.1002/ardp.201500293" target="_blank" rel="noreferrer noopener">10.1002/ardp.201500293</a>