The purpose of this study was to compare the percutaneous absorption and bioconversion of naltrexone (NTX), naltrexone-3-O-valerate (VAL), and naltrexone-3-O-(2 0 -ethylbutyrate) (ETBUT) in a human skin equivalent model (EpiDerm TM ) and in fresh human skin in vitro. NTX diffusion and metabolism to
Enzymes involved in the bioconversion of ester-based prodrugs
β Scribed by Bianca M. Liederer; Ronald T. Borchardt
- Publisher
- John Wiley and Sons
- Year
- 2006
- Tongue
- English
- Weight
- 359 KB
- Volume
- 95
- Category
- Article
- ISSN
- 0022-3549
No coin nor oath required. For personal study only.
β¦ Synopsis
Enzymes are essential for the activation of many prodrugs. In this review, the most important enzymes (e.g., paraoxonase, carboxylesterase, acetylcholinesterase, cholinesterase) involved in the bioconversion of ester-based prodrugs will be discussed in terms of their biology and biochemistry. Most of these enzymes fall into the category of hydrolytic enzymes. However, nonhydrolytic enzymes, including cytochrome P450s, can also catalyze the bioconversion of ester prodrugs and thus will be discussed here. Other factors influencing the ability of these enzymes to catalyze the bioconversion of ester-based prodrugs, particularly species and interindividual differences and stereochemical and structural features of the prodrugs, will be discussed.
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