ArticleJournal of trace elements in medicine and biology : organ of the Society for Minerals and Trace Elements (GMS)2014
Effects of acclimation salinity on the expression of selenoproteins in the tilapia, Oreochromis mossambicus.
Article in Journal of trace elements in medicine and biology : organ of the Society for Minerals and Trace Elements (GMS), 2014. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 5 papers.
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Who cites it
5 citing papers in PubMed, 14 citations in OpenAlex.
- Dietary Selenium-Enriched Aquatic Products for Human Health.Nutrients · 2025Review
- Selenium Deficiency Leads to Changes in Renal Fibrosis Marker Proteins and Wnt/β-Catenin Signaling Pathway Components.Biological trace element research · 2022Article
- Regulation of thyroid hormones and branchial iodothyronine deiodinases during freshwater acclimation in tilapia.Molecular and cellular endocrinology · 2021Article
- Transcriptome analysis of the brain provides insights into the regulatory mechanism for Coilia nasus migration.BMC genomics · 2020Article
- Selenocysteine β-Lyase: Biochemistry, Regulation and Physiological Role of the Selenocysteine Decomposition Enzyme.Antioxidants (Basel, Switzerland) · 2019Review
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Authors and funding
6 authors at 2 institutions in 1 country.
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Abstract
Selenoproteins are ubiquitously expressed, act on a variety of physiological redox-related processes, and are mostly regulated by selenium levels in animals. To date, the expression of most selenoproteins has not been verified in euryhaline fish models. The Mozambique tilapia, Oreochromis mossambicus, a euryhaline cichlid fish, has a high tolerance for changes in salinity and survives in fresh water (FW) and seawater (SW) environments which differ greatly in selenium availability. In the present study, we searched EST databases for cichlid selenoprotein mRNAs and screened for their differential expression in FW and SW-acclimated tilapia. The expression of mRNAs encoding iodothyronine deiodinases 1, 2 and 3 (Dio1, Dio2, Dio3), Fep15, glutathione peroxidase 2, selenoproteins J, K, L, M, P, S, and W, was measured in the brain, eye, gill, kidney, liver, pituitary, muscle, and intraperitoneal white adipose tissue. Gene expression of selenophosphate synthetase 1, Secp43, and selenocysteine lyase, factors involved in selenoprotein synthesis or in selenium metabolism, were also measured. The highest variation in selenoprotein and synthesis factor mRNA expression between FW- and SW-acclimated fish was found in gill and kidney. While the branchial expression of Dio3 was increased upon transferring tilapia from SW to FW, the inverse effect was observed when fish were transferred from FW to SW. Protein content of Dio3 was higher in fish acclimated to FW than in those acclimated to SW. Together, these results outline tissue distribution of selenoproteins in FW and SW-acclimated tilapia, and indicate that at least Dio3 expression is regulated by environmental salinity.
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