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Norcantharidin toxicity profile: an in vivo murine study

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Abstract

Norcantharidin (NCTD) is the demethylated analog of cantharidin, with allegedly reduced toxicity. However, there is still limited information regarding its posology and potential risk in its use in cancer treatment. Healthy BDF1 mice were intraperitoneally administered with norcantharidin (0, 3, 6, 12, and 25 mg/kg) every 24 h for 6 days. Survivor mice were euthanized, and the brain, lungs, kidneys, spleen, and liver were procured for enzymatic and histopathological analysis in the liver and kidney. DL50 were 8.86 mg/kg for females and 11.77 mg/kg for males. The treatments with 3.0 mg/kg and 6.0 mg/kg significantly modified the phosphorylase, alanine transaminase, and γ-glutamyl transferase activities; however, an organ-specific response was detected. A significant dose-dependent decrease was observed in the kidney for ROS, while the liver had the opposite effect. Histopathological analysis revealed a significant elevation in hepatocytes’ nuclei average size and total area (3 mg/kg), as well as centrilobular vein and adjacent sinusoidal capillaries showed a significant difference. The portal triad presented a significant difference in veins and capillarity count in 6 mg/kg. Renal samples showed cortex convoluted tubules’ average size significantly augmented in both doses’ groups, and tubule count was found augmented in 6 mg/kg. These physiological effects of NCTD can be exploited as treatment strategies if able to operate in an established posology and proper testing.

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Funding

This study was supported by Instituto Politécnico Nacional SIP code 20210197, and 20220561. Author Martínez-Razo G. is a DSc. student who received scholarship from CONACyT and BEIFI-IPN. M.L. Dominguez-López, E. Reyes-Maldonado, José M. de la Rosa, Diego A. Fabila-Bustos and A. Vega-López, are fellows of Estímulos al Desempeño en Investigación and Comisión y Fomento de Actividades Académicas (Instituto Politécnico Nacional) and Sistema Nacional de Investigadores (SNI, CONACyT, México).

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Contributions

GMR conceived, conducted experiments and wrote the manuscript. MLDM, ERM, ECV data curation, formal analysis. JMDLR, DAFB software, validation; visualization. AVL conceived, funding acquisition, project administration, writing—review and editing. All authors read and approved the manuscript and all data were generated in-house and no paper mill was used.

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Correspondence to Armando Vega-López.

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Ethics approval

The study protocol was approved by the local Ethical Committee (license number: PE/001/2574–6/20). Healthy BDF1 mice were obtained from the National School of Biological Sciences, Mexico, and were maintained in agreement with Article 38 and Chapter V of the Directive 2010/63/EU of the European Parliament and of the Council of 22 September 2010 on the protection of animals used for scientific purposes.

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The authors declare no competing interests.

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Martínez-Razo, G., Domínguez-López, M.L., de la Rosa, J.M. et al. Norcantharidin toxicity profile: an in vivo murine study. Naunyn-Schmiedeberg's Arch Pharmacol 396, 99–108 (2023). https://doi.org/10.1007/s00210-022-02299-z

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  • DOI: https://doi.org/10.1007/s00210-022-02299-z

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