Colon Effects of 7-Day Whole-Body Inhalation Exposure of Fischer 344 Rats to Emissions from First- and Second-Generation Biodiesel Fuels with and Without a Particle Filter
5 affiliations
- 1Department of Basic Sciences, Faculty of Veterinary Medicine, Warsaw University of Life Sciences, Nowoursynowska 159, 02-776 Warsaw, Poland
- 2Department of Dietetics, Faculty of Health Sciences, Warsaw University of Life Sciences, Nowoursynowska 159, 02-776 Warsaw, Poland
- 3Department of Pathology and Veterinary Diagnostics, Faculty of Veterinary Medicine, Warsaw University of Life Sciences, Nowoursynowska 159, 02-776 Warsaw, Poland
- 4Centre for Radiobiology and Biological Dosimetry, Institute of Nuclear Chemistry and Technology, Dorodna 16, 03-195 Warsaw, Poland
- 5Department of Medical Biology, Institute of Biology, Jan Kochanowski University, Uniwersytecka 7, 25-406 Kielce, Poland
Abstract
Biodiesel is projected to reduce greenhouse gas and particulate matter emissions relative to petrodiesel, but biodiesel engine emissions (DEEs) contain higher levels of nitrogen oxides, nano-sized particles, and specific oxygenated volatile organic compounds and aromatics that may increase health risks. Most research on DEE health effects has focused on respiratory, cardiovascular, neurodegenerative, and reproductive outcomes, leaving a considerable knowledge gap regarding gastrointestinal effects. We therefore examined and compared the colon effects of DEE produced by combustion of first-generation B7 biofuel (7% v/v fatty acid methyl esters, FAMEs) or second-generation SHB20 biofuel (7% v/v FAME plus 13% v/v hydrotreated vegetable oils, HVOs), with or without a diesel particle filter (DPF). Male Fischer 344 rats were exposed to DEE for 7 consecutive days (6 h/day; seven exposure sessions, 42 h in total) in whole-body inhalation chambers, at measured particulate matter concentrations of 2.19 and 2.13 mg/m3 without DPF and 0.17 and 0.19 mg/m3 with DPF for B7 and SHB20, respectively. Whole-body DEE exposure induced lipid peroxidation, oxidative-stress-associated and redox-related changes, mobilisation of the antioxidant defence system, and an inflammatory-associated response in colon tissue. These colon effects were blend-specific and only partly and endpoint-dependently mitigated by DPF use, with SHB20 DEE without DPF producing the most pronounced responses.
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BibTeX
@article{wilczak2026colon,
title = {{Colon Effects of 7-Day Whole-Body Inhalation Exposure of Fischer 344 Rats to Emissions from First- and Second-Generation Biodiesel Fuels with and Without a Particle Filter}},
author = {Jacek Wilczak and Katarzyna Dziendzikowska and Joanna Gromadzka-Ostrowska and Michał Oczkowski and Rafał Sapierzyński and Malwina Czerwińska and Anna Lankoff},
journal = {International Journal of Molecular Sciences},
year = {2026},
month = oct,
doi = {10.3390/ijms27219724},
url = {https://www.mdpi.com/1422-0067/27/21/9724},
note = {CC BY 4.0},
}
RIS
TY - JOUR
TI - Colon Effects of 7-Day Whole-Body Inhalation Exposure of Fischer 344 Rats to Emissions from First- and Second-Generation Biodiesel Fuels with and Without a Particle Filter
AU - Jacek Wilczak
AU - Katarzyna Dziendzikowska
AU - Joanna Gromadzka-Ostrowska
AU - Michał Oczkowski
AU - Rafał Sapierzyński
AU - Malwina Czerwińska
AU - Anna Lankoff
PY - 2026
DA - 2026/10/29
JO - International Journal of Molecular Sciences
DO - 10.3390/ijms27219724
UR - https://www.mdpi.com/1422-0067/27/21/9724
AB - Biodiesel is projected to reduce greenhouse gas and particulate matter emissions relative to petrodiesel, but biodiesel engine emissions (DEEs) contain higher levels of nitrogen oxides, nano-sized particles, and specific oxygenated volatile organic compounds and aromatics that may increase health risks. Most research on DEE health effects has focused on respiratory, cardiovascular, neurodegenerative, and reproductive outcomes, leaving a considerable knowledge gap regarding gastrointestinal effects. We therefore examined and compared the colon effects of DEE produced by combustion of first-generation B7 biofuel (7% v/v fatty acid methyl esters, FAMEs) or second-generation SHB20 biofuel (7% v/v FAME plus 13% v/v hydrotreated vegetable oils, HVOs), with or without a diesel particle filter (DPF). Male Fischer 344 rats were exposed to DEE for 7 consecutive days (6 h/day; seven exposure sessions, 42 h in total) in whole-body inhalation chambers, at measured particulate matter concentrations of 2.19 and 2.13 mg/m3 without DPF and 0.17 and 0.19 mg/m3 with DPF for B7 and SHB20, respectively. Whole-body DEE exposure induced lipid peroxidation, oxidative-stress-associated and redox-related changes, mobilisation of the antioxidant defence system, and an inflammatory-associated response in colon tissue. These colon effects were blend-specific and only partly and endpoint-dependently mitigated by DPF use, with SHB20 DEE without DPF producing the most pronounced responses.
SN - 1422-0067
ER -