Biomol Ther.  2021 Jan;29(1):52-57. 10.4062/biomolther.2020.062.

Fumonisin B1-Induced Toxicity Was Not Exacerbated in Glutathione Peroxidase-1/Catalase Double Knock Out Mice

Affiliations
  • 1Department of Veterinary Science, College of Agriculture and Environmental Sciences, Bahir Dar University, Bahir Dar 5501, Ethiopia
  • 2St. Louis College of Pharmacy, St. Louis, MO 63108, USA
  • 3Department of Molecular Medicine, School of Medicine, Ewha Womans University, Seoul 07804, Republic of Korea
  • 4College of Pharmacy, Chungbuk National University, Osong 28160, Republic of Korea

Abstract

Fumonisin B1 (FB1) structurally resembles sphingolipids and interferes with their metabolism leading to sphingolipid dysregulation. We questioned if FB1 could exacerbate liver or kidney toxicities in glutathione peroxidase 1 (Gpx1) and catalase (Cat) knockout mice. While higher serum levels of thiobarbituric acid reactive substances (TBARS) and sphinganine (Sa) were measured in Gpx1/Cat knockout mice (Gpx1/Cat KO) than wild type mice after 5 days of FB1 treatment, serum levels of alanine aminotransferase (ALT), sphingosine-1 phosphate (So-1-P), and sphinganine-1 phosphate (Sa-1-P) were found to be relatively low. Although Sa was highly elevated in Gpx1/Cat KO mice and wild mice, lower levels of So and Sa were found in both the kidney and liver tissues of Gpx/Cat KO mice than wild type mice after FB1 treatment. Paradoxically, FB1-induced cellular apoptosis and necrosis were hastened under oxidative stress in Gpx1/Cat KO mice.

Keyword

Fumonisin B1; Catalase; Glutathione peroxidase1; Sphingosine; Sphinganine
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