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Journal ArticleDOI

Esterase Activities in the Blood, Liver and Intestine of Several Preclinical Species and Humans

Loren Berry, +2 more
- 31 Mar 2009 - 
- Vol. 3, Iss: 2, pp 70-77
TLDR
Substantial species differences in activity of these esterases were observed between the mouse, rat, dog monkey and human, and such species differences must be considered when using these preclinical species to optimize the pharmacokinetic properties of ester compounds intended for human use.
Abstract
Species and tissue differences in the activity of three major classes of esterases, carboxylesterase (CE), butyrylcholinesterase (BChE) and paraoxonase (PON), were studied. Substantial species differences in activity of these esterases were observed between the mouse, rat, dog monkey and human. Such species differences must be considered when using these preclinical species to optimize the pharmacokinetic properties of ester compounds intended for human use.

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Controlling Plasma Stability of Hydroxamic Acids: A MedChem Toolbox

TL;DR: This work provides the first medicinal chemistry toolbox (experimental procedures and structural guidance) to assess and control the plasma stability of hydroxamic acids and realize their full potential as in vivo pharmacological probes and therapeutic agents.
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Preclinical evaluation of AT-527, a novel guanosine nucleotide prodrug with potent, pan-genotypic activity against hepatitis C virus.

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Inhaled Treprostinil-Prodrug Lipid Nanoparticle Formulations Provide Long-Acting Pulmonary Vasodilation.

TL;DR: Sustained presentation of TRE to the lungs and plasma is consistent with a once- or twice-daily dosing schedule in the absence of high Cmax-associated adverse events which could provide patients with an improved treprostinil therapy.
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Contributions of Intestine and Plasma to the Presystemic Bioconversion of Vicagrel, an Acetate of Clopidogrel

TL;DR: The findings rationalized the prodrug design hypothesis that vicagrel could overcome the extensive invalid hydrolysis of clopidogrel by the hepatic CE1 but experience the extensive hydrolytic to 2-oxo-clopidodogrel and subsequent oxidation to AM in the intestine and supported the theory of improved pharmacological activity through facilitated formation of 2-Oxo-Clopidol.
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Pharmacokinetic characterization of BMS-936561, an anti-CD70 antibody-drug conjugate, in preclinical animal species and prediction of its pharmacokinetics in humans.

TL;DR: Comparing the predicted and observed human PK from the phase I study, the dose‐normalized concentration‐time profiles ofαCD70_MED‐A and the total αCD70 were largely within the 5th‐95th percentile of the predicted profiles.
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