Acute Peripheral Inflammation Increases Plasma Concentration of Hypoglycemic Agent Nateglinide with Decreased Hepatic Drug-Metabolizing Activity in Rats

• Kojina Moeko

  Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama University

• Suzuki Keiichiro

  Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama University

• Nishiwaki Akane

  Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama University

• Aiba Tetsuya

  Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama University

Abstract

The effects of inflammation on hypoglycemic agents were evaluated in male rats with acute peripheral inflammation (API). Nateglinide (NTG) was utilized as a model compound, since it is a hepatically-metabolized compound and its metabolism is mainly mediated by CYP 2C11 enzyme. In the experiments, rats were subjected to carrageenan injection into their hind paws for API induction, and the plasma concentration profiles of NTG were then examined. In addition, pooled liver microsomes were prepared from control and API rats, and the hepatic drug-metabolizing activity toward NTG and the hepatic expression of CYP2C11 protein were evaluated. It was shown that the plasma concentration of NTG following its intravenous administration decreases at a slower rate in API rats than that in control rats. It was also indicated in the incubation study with the liver microsomes that the hepatic drug-metabolizing activity toward NTG decreases in API rats. Additionally, it was revealed in Western immunoblotting that the hepatic expression of CYP2C11 protein decreases in API rats. These findings suggest that inflammation occurring in peripheral tissues brings about a decrease in hepatic NTG metabolism by suppressing the hepatic expression of CYP2C11 protein, causing an alteration of the plasma concentration profile of NTG with its impaired elimination.

Journal

• Biological and Pharmaceutical Bulletin

  Biological and Pharmaceutical Bulletin 44 (1), 96-102, 2021-01-01

  The Pharmaceutical Society of Japan

Keywords

• acute inflammation
• CYP2C11
• hepatic drug metabolism
• nateglinide

Details

• CRID: 1391975831225379328
• NII Article ID: 130007965329
• NII Book ID: AA10885497
• DOI: 10.1248/bpb.b20-00677
• ISSN: 13475215
• ISSN: 09186158
• NDL BIB ID: 031210005
• PubMed: 33390555
• Web Site: https://ousar.lib.okayama-u.ac.jp/61554
• Web Site: https://ndlsearch.ndl.go.jp/books/R000000004-I031210005
• Web Site: https://www.jstage.jst.go.jp/article/bpb/44/1/44_b20-00677/_pdf
• Web Site: https://search.jamas.or.jp/link/ui/2021325537
• Text Lang: en
• Data Source:
  • JaLC
  • IRDB
  • NDL
  • Crossref
  • PubMed
  • CiNii Articles
  • KAKEN
• Abstract License Flag: Disallowed