{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,10,1]],"date-time":"2026-10-01T06:19:39Z","timestamp":1790835579718,"version":"4.1.0"},"reference-count":67,"publisher":"MDPI AG","issue":"1","license":[{"start":{"date-parts":[[2020,12,30]],"date-time":"2020-12-30T00:00:00Z","timestamp":1609286400000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"DOI":"10.13039\/501100008648","name":"Krajowy Naukowy Osrodek Wiodacy","doi-asserted-by":"publisher","award":["KNOW2015\/CB\/PRO1\/46"],"award-info":[{"award-number":["KNOW2015\/CB\/PRO1\/46"]}],"id":[{"id":"10.13039\/501100008648","id-type":"DOI","asserted-by":"publisher"}]},{"DOI":"10.13039\/501100004281","name":"Narodowe Centrum Nauki","doi-asserted-by":"publisher","award":["2017\/25\/B\/NZ9\/01707"],"award-info":[{"award-number":["2017\/25\/B\/NZ9\/01707"]}],"id":[{"id":"10.13039\/501100004281","id-type":"DOI","asserted-by":"publisher"}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Nutrients"],"abstract":"<jats:p>In mammals, 2 \u00d7 1012 red blood cells (RBCs) are produced every day in the bone marrow to ensure a constant supply of iron to maintain effective erythropoiesis. Impaired iron absorption in the duodenum and inefficient iron reutilization from senescent RBCs by macrophages contribute to the development of anemia. Ferroportin (Fpn), the only known cellular iron exporter, as well as hephaestin (Heph) and ceruloplasmin, two copper-dependent ferroxidases involved in the above-mentioned processes, are key elements of the interaction between copper and iron metabolisms. Crosslinks between these metals have been known for many years, but metabolic effects of one on the other have not been elucidated to date. Neonatal iron deficiency anemia in piglets provides an interesting model for studying this interplay. In duodenal enterocytes of young anemic piglets, we identified iron deposits and demonstrated increased expression of ferritin with a concomitant decline in both Fpn and Heph expression. We postulated that the underlying mechanism involves changes in copper distribution within enterocytes as a result of decreased expression of the copper transporter\u2014Atp7b. Obtained results strongly suggest that regulation of iron absorption within enterocytes is based on the interaction between proteins of copper and iron metabolisms and outcompetes systemic regulation.<\/jats:p>","DOI":"10.3390\/nu13010104","type":"journal-article","created":{"date-parts":[[2020,12,30]],"date-time":"2020-12-30T09:35:23Z","timestamp":1609320923000},"page":"104","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":8,"title":["Relationship between Down-Regulation of Copper-Related Genes and Decreased Ferroportin Protein Level in the Duodenum of Iron-Deficient Piglets"],"prefix":"10.3390","volume":"13","author":[{"ORCID":"https:\/\/orcid.org\/0000-0002-4333-6853","authenticated-orcid":false,"given":"Aneta","family":"Jo\u0144czy","sequence":"first","affiliation":[{"name":"Department of Molecular Biology, Institute of Genetics and Animal Biotechnology, PAS, 05-552 Jastrz\u0119biec, Poland"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-6706-0882","authenticated-orcid":false,"given":"Rafa\u0142","family":"Mazgaj","sequence":"additional","affiliation":[{"name":"Department of Molecular Biology, Institute of Genetics and Animal Biotechnology, PAS, 05-552 Jastrz\u0119biec, Poland"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Rafa\u0142 Rados\u0142aw","family":"Starzy\u0144ski","sequence":"additional","affiliation":[{"name":"Department of Molecular Biology, Institute of Genetics and Animal Biotechnology, PAS, 05-552 Jastrz\u0119biec, Poland"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-1321-2235","authenticated-orcid":false,"given":"Piotr","family":"Pozna\u0144ski","sequence":"additional","affiliation":[{"name":"Department of Experimental Genomics, Institute of Genetics and Animal Biotechnology, PAS, 05-552 Jastrz\u0119biec, Poland"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Mateusz","family":"Szudzik","sequence":"additional","affiliation":[{"name":"Department of Molecular Biology, Institute of Genetics and Animal Biotechnology, PAS, 05-552 Jastrz\u0119biec, Poland"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Ewa","family":"Smuda","sequence":"additional","affiliation":[{"name":"Department of Molecular Biology, Institute of Genetics and Animal Biotechnology, PAS, 05-552 Jastrz\u0119biec, Poland"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Marian","family":"Kamyczek","sequence":"additional","affiliation":[{"name":"Pig Hybridization Centre, National Research Institute of Animal Production, 64-122 Paw\u0142owice, Poland"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Pawe\u0142","family":"Lipi\u0144ski","sequence":"additional","affiliation":[{"name":"Department of Molecular Biology, Institute of Genetics and Animal Biotechnology, PAS, 05-552 Jastrz\u0119biec, Poland"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"1968","published-online":{"date-parts":[[2020,12,30]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","first-page":"11","DOI":"10.1007\/s12291-014-0446-0","article-title":"Free radicals: Properties, sources, targets, and their implication in various diseases","volume":"30","author":"Phaniendra","year":"2015","journal-title":"Indian J. 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