|کد مقاله||کد نشریه||سال انتشار||مقاله انگلیسی||ترجمه فارسی||نسخه تمام متن|
|5562494||1403426||2018||10 صفحه PDF||ندارد||دانلود کنید|
â¢NCS-382 pharmacotoxicity was evaluated in SSADH-deficient neural stem cells.â¢NCS-382 is actively transported and inhibits GHB transport in epithelial MDCK cells.â¢NCS-382 showed minimal toxicity in parameters of cellular oxidative stress.â¢NCS-382 minimally impacted cell organelle number, viability, and gene expression.â¢NCS-382 holds promise for treating SSADH deficiency, a disorder of GABA metabolism.
We report the in vitro assessment of pharmacotoxicity for the high-affinity GHB receptor ligand, NCS-382, using neuronal stem cells derived from mice with a targeted deletion of the aldehyde dehydrogenase 5a1 gene (succinic semialdehyde dehydrogenase(SSADH)-deficient mice). These animals represent a phenocopy of the human disorder of GABA metabolism, SSADH deficiency, that metabolically features accumulation of both GABA and the GABA-analog Î³-hydroxybutyric acid in conjunction with a nonspecific neurological phenotype. We demonstrate for the first time using MDCK cells that NCS-382 is actively transported and capable of inhibiting GHB transport. Following these in vitro assays with in vivo studies in aldh5a1â/â mice, we found the ratio of brain/liver GHB to be unaffected by chronic NCS-382 administration (300Â mg/kg; 7 consecutive days). Employing a variety of cellular parameters (reactive oxygen and superoxide species, ATP production and decay, mitochondrial and lysosomal number, cellular viability and necrosis), we demonstrate that up to 1Â mM NCS-382 shows minimal evidence of pharmacotoxicity. As well, studies at the molecular level indicate that the effects of NCS-382 at 0.5Â mM are minimally toxic as evaluated using gene expression assay. The cumulative data provides increasing confidence that NCS-382 could eventually be considered in the therapeutic armament for heritable SSADH deficiency.
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Journal: Toxicology in Vitro - Volume 46, February 2018, Pages 203-212