Time Course of Renal Transcriptomics after Subchronic Exposure to Ochratoxin A in Fisher Rats

The mycotoxin ochratoxin A (OTA) is a potent nephrocarcinogen, mainly in male rats. The aim of this study was to determine the time course of gene expression (GeneChip<sup>®</sup> Rat Gene 2.0 ST Array, Affymetrix) in kidney samples from male and female F344 rats, treated daily (p.o) wit...

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Main Authors: Laura Pastor, Ariane Vettorazzi, Elizabeth Guruceaga, López de Cerain A.
Format: Article
Language:English
Published: MDPI AG 2021-02-01
Series:Toxins
Subjects:
Online Access:https://www.mdpi.com/2072-6651/13/3/177
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spelling doaj-2194a4ff3d5a467c94e7d22a597b96da2021-02-27T00:05:13ZengMDPI AGToxins2072-66512021-02-011317717710.3390/toxins13030177Time Course of Renal Transcriptomics after Subchronic Exposure to Ochratoxin A in Fisher RatsLaura Pastor0Ariane Vettorazzi1Elizabeth Guruceaga2López de Cerain A.3Department of Pharmacology and Toxicology, Faculty of Pharmacy and Nutrition, University of Navarra, CIFA Building, c/Irunlarrea 1, E-31008 Pamplona, SpainDepartment of Pharmacology and Toxicology, Faculty of Pharmacy and Nutrition, University of Navarra, CIFA Building, c/Irunlarrea 1, E-31008 Pamplona, SpainIdiSNA, Navarra Institute for Health Research, E-31008 Pamplona, SpainDepartment of Pharmacology and Toxicology, Faculty of Pharmacy and Nutrition, University of Navarra, CIFA Building, c/Irunlarrea 1, E-31008 Pamplona, SpainThe mycotoxin ochratoxin A (OTA) is a potent nephrocarcinogen, mainly in male rats. The aim of this study was to determine the time course of gene expression (GeneChip<sup>®</sup> Rat Gene 2.0 ST Array, Affymetrix) in kidney samples from male and female F344 rats, treated daily (p.o) with 0.50 mg/kg b.w. (body weight) of OTA for 7 or 21 days, and evaluate if there were differences between both sexes. After OTA treatment, there was an evolution of gene expression in the kidney over time, with more differentially expressed genes (DEG) at 21 days. The gene expression time course was different between sexes with respect to the number of DEG and the direction of expression (up or down): the female response was progressive and consistent over time, whereas males had a different early response with more DEG, most of them up-regulated. The statistically most significant DEG corresponded to metabolism enzymes (<i>Akr1b7</i>, <i>Akr1c2</i>, <i>Adh6</i> down-regulated in females; <i>Cyp2c11</i>, <i>Dhrs7</i>, <i>Cyp2d1</i>, <i>Cyp2d5</i> down-regulated in males) or transporters (<i>Slc17a9</i> down-regulated in females; <i>Slco1a1</i> (OATP-1) and <i>Slc51b</i> and <i>Slc22a22</i> (OAT) down-regulated in males). Some of these genes had also a basal sex difference and were over-expressed in males or females with respect to the other sex.https://www.mdpi.com/2072-6651/13/3/177ochratoxin A (OTA)sex differencesgene expressionmetabolismtransportersFisher rats
collection DOAJ
language English
format Article
sources DOAJ
author Laura Pastor
Ariane Vettorazzi
Elizabeth Guruceaga
López de Cerain A.
spellingShingle Laura Pastor
Ariane Vettorazzi
Elizabeth Guruceaga
López de Cerain A.
Time Course of Renal Transcriptomics after Subchronic Exposure to Ochratoxin A in Fisher Rats
Toxins
ochratoxin A (OTA)
sex differences
gene expression
metabolism
transporters
Fisher rats
author_facet Laura Pastor
Ariane Vettorazzi
Elizabeth Guruceaga
López de Cerain A.
author_sort Laura Pastor
title Time Course of Renal Transcriptomics after Subchronic Exposure to Ochratoxin A in Fisher Rats
title_short Time Course of Renal Transcriptomics after Subchronic Exposure to Ochratoxin A in Fisher Rats
title_full Time Course of Renal Transcriptomics after Subchronic Exposure to Ochratoxin A in Fisher Rats
title_fullStr Time Course of Renal Transcriptomics after Subchronic Exposure to Ochratoxin A in Fisher Rats
title_full_unstemmed Time Course of Renal Transcriptomics after Subchronic Exposure to Ochratoxin A in Fisher Rats
title_sort time course of renal transcriptomics after subchronic exposure to ochratoxin a in fisher rats
publisher MDPI AG
series Toxins
issn 2072-6651
publishDate 2021-02-01
description The mycotoxin ochratoxin A (OTA) is a potent nephrocarcinogen, mainly in male rats. The aim of this study was to determine the time course of gene expression (GeneChip<sup>®</sup> Rat Gene 2.0 ST Array, Affymetrix) in kidney samples from male and female F344 rats, treated daily (p.o) with 0.50 mg/kg b.w. (body weight) of OTA for 7 or 21 days, and evaluate if there were differences between both sexes. After OTA treatment, there was an evolution of gene expression in the kidney over time, with more differentially expressed genes (DEG) at 21 days. The gene expression time course was different between sexes with respect to the number of DEG and the direction of expression (up or down): the female response was progressive and consistent over time, whereas males had a different early response with more DEG, most of them up-regulated. The statistically most significant DEG corresponded to metabolism enzymes (<i>Akr1b7</i>, <i>Akr1c2</i>, <i>Adh6</i> down-regulated in females; <i>Cyp2c11</i>, <i>Dhrs7</i>, <i>Cyp2d1</i>, <i>Cyp2d5</i> down-regulated in males) or transporters (<i>Slc17a9</i> down-regulated in females; <i>Slco1a1</i> (OATP-1) and <i>Slc51b</i> and <i>Slc22a22</i> (OAT) down-regulated in males). Some of these genes had also a basal sex difference and were over-expressed in males or females with respect to the other sex.
topic ochratoxin A (OTA)
sex differences
gene expression
metabolism
transporters
Fisher rats
url https://www.mdpi.com/2072-6651/13/3/177
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