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Unfortunately, the adverse side effects of these immunosuppressants can be severe, which is one of the rationales that life expectancy of individuals after transplant still significantly falls short of that of the general population. The current experimental setup was designed to analyze the tacrolimus-induced hepatic iron overload in Wistar rats. Four experimental groups were orally given 1\u2009ml of aqueous suspension of tacrolimus (12\u2009mg\/kg) through oral gavage, and rats were sacrificed after 6, 12, 24, and 48\u2009h of tacrolimus dose. Hepatic hepcidin expression was found to be significantly augmented along with the upregulation of <jats:italic>Tf<\/jats:italic> and <jats:italic>TfR1<\/jats:italic>, Ferritin-L, Ferritin-H, <jats:italic>TNF-\u03b1<\/jats:italic>, and <jats:italic>HO-1<\/jats:italic> gene expression at 6 and 12\u2009h, and downregulation of <jats:italic>Fpn-1<\/jats:italic>, <jats:italic>Hjv<\/jats:italic>, and <jats:italic>Heph<\/jats:italic> at 6\u2009h was detected. Significant downregulation of <jats:italic>IL-6<\/jats:italic>, <jats:italic>IFN-\u03b1<\/jats:italic>, <jats:italic>IFN-\u03b2<\/jats:italic>, and <jats:italic>IFN-\u03b3<\/jats:italic> at all study time points was also observed. Serum iron level was decreased while serum hepcidin level was found to be significantly increased. Iron staining showed blue-stained hemosiderin granules within the hepatocytes, sinusoidal spaces, and portal areas at 12 and 24\u2009h time points and remarkable fall of iron contents in the splenic red pulp. These results suggest that the use of tacrolimus leads to the onset of an intrahepatic acute-phase response-like reaction and causes iron overload in hepatic cells by altering the expression of key proteins involved in iron metabolism.<\/jats:p>","DOI":"10.1155\/2020\/8675275","type":"journal-article","created":{"date-parts":[[2020,4,1]],"date-time":"2020-04-01T23:31:10Z","timestamp":1585783870000},"page":"1-10","source":"Crossref","is-referenced-by-count":12,"title":["Immunosuppressant-Induced Oxidative Stress and Iron: A Paradigm Shift from Systemic to Intrahepatic Abnormalities"],"prefix":"10.1155","volume":"2020","author":[{"ORCID":"https:\/\/orcid.org\/0000-0002-4984-4373","authenticated-orcid":true,"given":"Tasleem","family":"Akhtar","sequence":"first","affiliation":[{"name":"Department of Pharmacology, University of Health Sciences, Lahore, 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