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Transplantation

Tacrolimus trough level and oxidative stress in Tunisian kidney transplanted patients

ORCID Icon, , , , , , & ORCID Icon show all
Article: 2313863 | Received 25 Oct 2023, Accepted 30 Jan 2024, Published online: 12 Feb 2024
 

Abstract

Background

The effect of tacrolimus (TAC) on oxidative stress after kidney transplantation (KT) is unclear. This study aimed to evaluate the influence of TAC trough levels of oxidative stress status in Tunisian KT patients during the post-transplantation period (PTP).

Methods

A prospective study including 90 KT patients was performed. TAC whole-blood concentrations were measured by the microparticle enzyme immunoassay method and adjusted according to the target range. Plasma levels of oxidants (malondialdehyde (MDA) and advanced oxidation protein products (AOPP)) and antioxidants (ascorbic acid, glutathione (GSH), glutathione peroxidase (GPx), and superoxide dismutase (SOD)) were measured using spectrophotometry. The subjects were subdivided according to PTP into three groups: patients with early, intermediate, and late PT. According to the TAC level, they were subdivided into LL-TAC, NL-TAC, and HL-TAC groups.

Results

A decrease in MDA levels, SOD activity, and an increase in GSH levels and GPx activity were observed in patients with late PT compared to those with early and intermediate PT (p < 0.05). Patients with LL-TAC had lower MDA levels and higher GSH levels and GPx activity compared with the NL-TAC and HL-TAC groups (p < 0.05).

Conclusion

Our results have shown that in KT patients, despite the recovery of kidney function, the TAC reduced but did not normalize oxidative stress levels in long-term therapy, and the TAC effect significantly depends on the concentration used.

Authors’ contributions

All authors contributed to the design and implementation of the research, the analysis of the results, and the writing of the manuscript.

Disclosure statement

The authors declare that they have no conflict of interest.

Additional information

Funding

The author(s) reported there is no funding associated with the work featured in this article.