The effect of low doses of chlorpyrifos on blood and bone marrow cells in Wistar rats
The aim of this study was to investigate the genotoxic potential of low doses of chlorpyrifos (CPF) on blood and bone marrow cells in adult male Wistar rats. CPF was administered by oral gavage at daily doses of 0.010, 0.015, and 0.160 mg/kg of body weight (bw) for 28 consecutive days. Positive cont...
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| Format: | Article |
| Language: | English |
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Sciendo
2022-09-01
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| Series: | Arhiv za Higijenu Rada i Toksikologiju |
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| Online Access: | https://doi.org/10.2478/aiht-2022-73-3665 |
| _version_ | 1811332789170077696 |
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| author | Kašuba Vilena Micek Vedran Milić Mirta Želježić Davor Katić Anja |
| author_facet | Kašuba Vilena Micek Vedran Milić Mirta Želježić Davor Katić Anja |
| author_sort | Kašuba Vilena |
| collection | DOAJ |
| description | The aim of this study was to investigate the genotoxic potential of low doses of chlorpyrifos (CPF) on blood and bone marrow cells in adult male Wistar rats. CPF was administered by oral gavage at daily doses of 0.010, 0.015, and 0.160 mg/kg of body weight (bw) for 28 consecutive days. Positive control (PC) was administered 300 mg/kg bw/day of ethyl methane sulphonate (EMS) for the final three days of the experiment. Toxic outcomes of exposure were determined with the in vivo micronucleus (MN) assay and alkaline comet assay. The 28-day exposure to the 0.015 mg/kg CPF dose, which was three times higher than the current value of acute reference dose (ARfD), reduced body weight gain in rats the most. The in vivo MN assay showed significant differences in number of reticulocytes per 1000 erythrocytes between PC and negative control (NC) and between all control groups and the groups exposed to 0.015 and 0.160 mg/kg bw/day of CPF. The number of micronucleated polychromatic erythrocytes per 2000 erythrocytes was significantly higher in the PC than the NC group or group exposed to 0.015 mg/kg bw/day of CPF. CPF treatment did not significantly increase primary DNA damage in bone marrow cells compared to the NC group. However, the damage in bone marrow cells of CPF-exposed rats was much higher than the one recorded in leukocytes, established in the previous research. Both assays proved to be successful for the assessment of CPFinduced genome instability in Wistar rats. However, the exact mechanisms of damage have to be further investigated and confirmed by other, more sensitive methods. |
| first_indexed | 2024-04-13T16:42:11Z |
| format | Article |
| id | doaj.art-cf25fc80502b4f8982d1e0f8224fc265 |
| institution | Directory Open Access Journal |
| issn | 1848-6312 |
| language | English |
| last_indexed | 2024-04-13T16:42:11Z |
| publishDate | 2022-09-01 |
| publisher | Sciendo |
| record_format | Article |
| series | Arhiv za Higijenu Rada i Toksikologiju |
| spelling | doaj.art-cf25fc80502b4f8982d1e0f8224fc2652022-12-22T02:39:12ZengSciendoArhiv za Higijenu Rada i Toksikologiju1848-63122022-09-0173322323210.2478/aiht-2022-73-3665The effect of low doses of chlorpyrifos on blood and bone marrow cells in Wistar ratsKašuba Vilena0Micek Vedran1Milić Mirta2Želježić Davor3Katić Anja4Institute for Medical Research and Occupational Health, Zagreb, CroatiaInstitute for Medical Research and Occupational Health, Zagreb, CroatiaInstitute for Medical Research and Occupational Health, Zagreb, CroatiaInstitute for Medical Research and Occupational Health, Zagreb, CroatiaInstitute for Medical Research and Occupational Health, Zagreb, CroatiaThe aim of this study was to investigate the genotoxic potential of low doses of chlorpyrifos (CPF) on blood and bone marrow cells in adult male Wistar rats. CPF was administered by oral gavage at daily doses of 0.010, 0.015, and 0.160 mg/kg of body weight (bw) for 28 consecutive days. Positive control (PC) was administered 300 mg/kg bw/day of ethyl methane sulphonate (EMS) for the final three days of the experiment. Toxic outcomes of exposure were determined with the in vivo micronucleus (MN) assay and alkaline comet assay. The 28-day exposure to the 0.015 mg/kg CPF dose, which was three times higher than the current value of acute reference dose (ARfD), reduced body weight gain in rats the most. The in vivo MN assay showed significant differences in number of reticulocytes per 1000 erythrocytes between PC and negative control (NC) and between all control groups and the groups exposed to 0.015 and 0.160 mg/kg bw/day of CPF. The number of micronucleated polychromatic erythrocytes per 2000 erythrocytes was significantly higher in the PC than the NC group or group exposed to 0.015 mg/kg bw/day of CPF. CPF treatment did not significantly increase primary DNA damage in bone marrow cells compared to the NC group. However, the damage in bone marrow cells of CPF-exposed rats was much higher than the one recorded in leukocytes, established in the previous research. Both assays proved to be successful for the assessment of CPFinduced genome instability in Wistar rats. However, the exact mechanisms of damage have to be further investigated and confirmed by other, more sensitive methods.https://doi.org/10.2478/aiht-2022-73-3665alkaline comet assaybody weight changesgenotoxicityin vivo micronucleus assaylow dosesalkalni komet-testgenotoksičnostin vivo mikronukleus testniske dozepromjene tjelesne mase |
| spellingShingle | Kašuba Vilena Micek Vedran Milić Mirta Želježić Davor Katić Anja The effect of low doses of chlorpyrifos on blood and bone marrow cells in Wistar rats Arhiv za Higijenu Rada i Toksikologiju alkaline comet assay body weight changes genotoxicity in vivo micronucleus assay low doses alkalni komet-test genotoksičnost in vivo mikronukleus test niske doze promjene tjelesne mase |
| title | The effect of low doses of chlorpyrifos on blood and bone marrow cells in Wistar rats |
| title_full | The effect of low doses of chlorpyrifos on blood and bone marrow cells in Wistar rats |
| title_fullStr | The effect of low doses of chlorpyrifos on blood and bone marrow cells in Wistar rats |
| title_full_unstemmed | The effect of low doses of chlorpyrifos on blood and bone marrow cells in Wistar rats |
| title_short | The effect of low doses of chlorpyrifos on blood and bone marrow cells in Wistar rats |
| title_sort | effect of low doses of chlorpyrifos on blood and bone marrow cells in wistar rats |
| topic | alkaline comet assay body weight changes genotoxicity in vivo micronucleus assay low doses alkalni komet-test genotoksičnost in vivo mikronukleus test niske doze promjene tjelesne mase |
| url | https://doi.org/10.2478/aiht-2022-73-3665 |
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