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The pharmacological effect of hemin in inflammatory-related diseases: a systematic review

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Background: Hemin is clinically used in acute attacks of porphyria; however, recent evidence has also highlighted its capability to stimulate the heme oxygenase enzyme, being associated with cytoprotective, antioxidant, and anti-inflammatory effects. Indeed, current preclinical evidence emphasizes the potential anti-inflammatory role of hemin through its use in animal models of disease. Nevertheless, there is no consensus about the underlying mechanism(s) and the most optimal therapeutic regimens. Therefore, this review aims to summarize, analyze, and discuss the current preclinical evidence concerning the pharmacological effect of hemin. Methods: Following the application of the search expression and the retrieval of the articles, only nonclinical studies in vivo written in English were considered, where the potential anti-inflammatory effect of hemin was evaluated. Results: Forty-nine articles were included according to the eligibility criteria established. The results obtained show the preference of using 30 to 50 mg/kg of hemin, administered intraperitoneally, in both acute and chronic contexts. This drug demonstrates significant anti-inflammatory and antioxidant activities considering its capacity for reducing the expression of proinflammatory and oxidative markers. Conclusions: This review highlighted the significant anti-inflammatory and antioxidant effects of hemin, providing a clearer vision for the medical community about the use of this drug in several human diseases.

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The authors from the Health and Technology Research Center gratefully acknowledge the support of the Fundação para a Ciência e a Tecnologia/Ministério da Ciência, Tecnologia e Ensino Superior (UIDB/05608/2020 and UIDP/05608/2020).

Keywords

Animal models Hemin Inflammation Nonclinical studies in vivo Oxidative stress Inflammatory-related diseases FCT_UIDB/05608/2020 FCT_UIDP/05608/2020

Citation

Estarreja J, Caldeira G, Silva I, Mendes P, Mateus V. The pharmacological effect of hemin in inflammatory-related diseases: a systematic review. Biomedicines. 2024;12(4):898.

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