Journal article
Gene expression and immunochemical localization of major cytochrome P450 drug-metabolizing enzymes in bovine nasal olfactory and respiratory mucosa
Inhalation toxicology, Vol.27(14), pp.767-777
12/06/2015
DOI: 10.3109/08958378.2015.1066903
PMCID: PMC4970319
PMID: 26572092
Abstract
Despite tremendous advancement in the characterization of nasal enzyme expression, knowledge of the role of the nasal mucosa in the metabolism of xenobiotics is still inadequate, primarily due to the limited availability of in vitro models for nasal metabolism screening studies. An extensive knowledge of the oxidative and conjugative metabolizing capacity of the cattle (Bos taurus) olfactory and respiratory mucosa can aid in efficient use of these tissues for pre-clinical investigations of the biotransformation and toxicity of therapeutic agents following nasal administration or inhalation. Cows are also exposed to a variety of airborne pollutants and pesticides during their lifetime, the metabolism of which can have profound toxicological and ecological consequences. The aim of the present study was to characterize cytochrome P450 (CYP) enzyme expression in the bovine nasal mucosa. Amplification of the specific genes through RT-PCR confirmed expression of several CYP enzymes in bovine hepatic and nasal tissues. The results demonstrate that bovine nasal olfactory and respiratory mucosal and liver tissues express similar populations, families, and distributions of CYP enzymes, as has been previously reported with other species, including humans. Bovine ex vivo tissues can serve as a readily available reference tissue to elucidate preclinical toxico-kinetic effects resulting from exposure to substances in the environment or following drug administration.
Details
- Title: Subtitle
- Gene expression and immunochemical localization of major cytochrome P450 drug-metabolizing enzymes in bovine nasal olfactory and respiratory mucosa
- Creators
- Varsha Dhamankar - University of IowaMahfoud Assem - University of IowaMaureen D. Donovan - University of Iowa
- Resource Type
- Journal article
- Publication Details
- Inhalation toxicology, Vol.27(14), pp.767-777
- DOI
- 10.3109/08958378.2015.1066903
- PMID
- 26572092
- PMCID
- PMC4970319
- NLM abbreviation
- Inhal Toxicol
- ISSN
- 0895-8378
- eISSN
- 1091-7691
- Publisher
- Taylor & Francis
- Language
- English
- Date published
- 12/06/2015
- Academic Unit
- Pharmaceutical Sciences and Experimental Therapeutics
- Record Identifier
- 9984365880802771
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