PMID- 37373473 OWN - NLM STAT- MEDLINE DCOM- 20230629 LR - 20230701 IS - 1422-0067 (Electronic) IS - 1422-0067 (Linking) VI - 24 IP - 12 DP - 2023 Jun 19 TI - Long-Term Influence of PCB- and PBDE-Spiked Microplastic Spheres Fed through Rotifers to Atlantic Cod (Gadus morhua) Larvae. LID - 10.3390/ijms241210326 [doi] LID - 10326 AB - Omnipresent microplastics (MPs) in marine ecosystems are ingested at all trophic levels and may be a vector for the transfer of persistent organic pollutants (POPs) through the food web. We fed rotifers polyethylene MPs (1-4 microm) spiked with seven congeners of polychlorinated biphenyls (PCBs) and two congeners of polybrominated diphenyl ethers (PBDEs). In turn, these rotifers were fed to cod larvae from 2-30 days post-hatching (dph), while the control groups were fed rotifers without MPs. After 30 dph, all the groups were fed the same feed without MPs. Whole-body larvae were sampled at 30 and 60 dph, and four months later the skin of 10 g juveniles was sampled. The PCBs and PBDEs concentrations were significantly higher in MP larvae compared to the control larvae at 30 dph, but the significance dissipated at 60 dph. Expression of stress-related genes in cod larvae at 30 and 60 dph showed inconclusive minor random effects. The skin of MP juveniles showed disrupted epithelial integrity, fewer club cells and downregulation of a suite of genes involved in immunity, metabolism and the development of skin. Our study showed that POPs were transferred through the food web and accumulated in the larvae, but that the level of pollutants decreased once the exposure was ceased, possibly related to growth dilution. Considering the transcriptomic and histological findings, POPs spiked to MPs and/or MPs themselves may have long-term effects in the skin barrier defense system, immune response and epithelium integrity, which may potentially reduce the robustness and overall fitness of the fish. FAU - Bogevik, Andre S AU - Bogevik AS AUID- ORCID: 0000-0002-5269-4329 AD - Nofima, Muninbakken 9-13, Breivika, 9019 Tromso, Norway. FAU - Puvanendran, Velmurugu AU - Puvanendran V AUID- ORCID: 0000-0002-4416-7000 AD - Nofima, Muninbakken 9-13, Breivika, 9019 Tromso, Norway. FAU - Vorkamp, Katrin AU - Vorkamp K AUID- ORCID: 0000-0002-1131-5687 AD - Department of Environmental Science, Aarhus University, 4000 Roskilde, Denmark. FAU - Burgerhout, Erik AU - Burgerhout E AD - Nofima, Muninbakken 9-13, Breivika, 9019 Tromso, Norway. FAU - Hansen, Oyvind AU - Hansen O AD - Nofima, Muninbakken 9-13, Breivika, 9019 Tromso, Norway. FAU - Fernandez-Miguez, Maria AU - Fernandez-Miguez M AUID- ORCID: 0000-0002-9465-5467 AD - Faculty of Biology, University of Vigo, 36310 Vigo, Spain. FAU - Krasnov, Aleksei AU - Krasnov A AUID- ORCID: 0000-0002-1892-6333 AD - Nofima, Muninbakken 9-13, Breivika, 9019 Tromso, Norway. FAU - Afanasyev, Sergey AU - Afanasyev S AUID- ORCID: 0000-0002-8393-820X AD - Sechenov Institute of Evolutionary Physiology and Biochemistry, Russian Academy of Sciences, Torez 44, 194223 Saint-Petersburg, Russia. FAU - Host, Vibeke AU - Host V AD - Nofima, Muninbakken 9-13, Breivika, 9019 Tromso, Norway. FAU - Ytteborg, Elisabeth AU - Ytteborg E AUID- ORCID: 0000-0002-3131-020X AD - Nofima, Muninbakken 9-13, Breivika, 9019 Tromso, Norway. LA - eng GR - 255267/The Research Council of Norway/ PT - Journal Article DEP - 20230619 PL - Switzerland TA - Int J Mol Sci JT - International journal of molecular sciences JID - 101092791 RN - DFC2HB4I0K (Polychlorinated Biphenyls) RN - 7REL09ZX35 (pentabromodiphenyl ether) RN - 0 (Halogenated Diphenyl Ethers) RN - 0 (Plastics) RN - 0 (Microplastics) RN - 0 (Environmental Pollutants) RN - 0 (Water Pollutants, Chemical) SB - IM MH - Animals MH - *Polychlorinated Biphenyls/toxicity MH - *Gadus morhua/metabolism MH - Halogenated Diphenyl Ethers/toxicity MH - Plastics/metabolism MH - Larva/metabolism MH - Microplastics/toxicity MH - Ecosystem MH - *Rotifera MH - *Environmental Pollutants/metabolism MH - *Water Pollutants, Chemical/metabolism PMC - PMC10299254 OTO - NOTNLM OT - fish larvae OT - food webs OT - lipid structures OT - persistent organic pollutants (POPs) OT - plastic pollutants OT - skin barriers COIS- The authors declare no conflict of interest. EDAT- 2023/06/28 06:42 MHDA- 2023/06/29 06:43 PMCR- 2023/06/19 CRDT- 2023/06/28 01:20 PHST- 2023/04/28 00:00 [received] PHST- 2023/06/02 00:00 [revised] PHST- 2023/06/06 00:00 [accepted] PHST- 2023/06/29 06:43 [medline] PHST- 2023/06/28 06:42 [pubmed] PHST- 2023/06/28 01:20 [entrez] PHST- 2023/06/19 00:00 [pmc-release] AID - ijms241210326 [pii] AID - ijms-24-10326 [pii] AID - 10.3390/ijms241210326 [doi] PST - epublish SO - Int J Mol Sci. 2023 Jun 19;24(12):10326. doi: 10.3390/ijms241210326.