Cigarette smoke interacts with amiodarone toxicity in Saccharomyces cerevisiae

J Appl Toxicol. 2023 May;43(5):764-768. doi: 10.1002/jat.4413. Epub 2022 Nov 26.

Abstract

Amiodarone (AMD) is an antiarrhythmic drug prescribed to treat ventricular tachycardia and fibrillation. However, it causes an unpredictable toxicity (idiosyncratic), which may depend on co-exposure to pollutants. AMD toxicity involves calcium homeostasis alteration and oxidative stress, which are also affected by cigarette smoke (CS). We investigated the interaction of CS-condensate (CSC), phenanthrene, and benzo(a)pyrene with AMD toxicity on Saccharomyces cerevisiae. AMD toxicity was reduced by CSC or phenanthrene. Benzo(a)pyrene mildly decreased AMD toxicity on the wild-type strain, but not on the catalase-CTT1 mutant. This latter and other mutants in glucose receptor-GPR1 or calcium transporter-PMR1 showed lower antagonistic effect to AMD by CSC or phenanthrene relative to the wild type, suggesting roles of oxidative stress, calcium homeostasis, and hexose-sensing in this interaction.

Keywords: Saccharomyces cerevisiae; amiodarone; calcium homeostasis; catalase; cigarette smoke; nutrient sensing.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Amiodarone* / toxicity
  • Benzo(a)pyrene / toxicity
  • Calcium
  • Cigarette Smoking*
  • Nicotiana
  • Saccharomyces cerevisiae / genetics

Substances

  • Amiodarone
  • Benzo(a)pyrene
  • Calcium