Study of the safety of methylphenidate: Focus on nephrotoxicity aspects
Luiza Herbene Macedo Soares Salviano1, Maria Isabel Linhares2, Klistenes Alves de Lima3
1Postgraduation Program in Development and Technological Innovation in Medicines (PPGDITM), Federal University of Ceará (UFC), Brazil.
Aims:
Methylphenidate (MPD) is increasingly prescribed for the treatment of Attention Deficit Hyperactivity Disorder and there are concerns about its appropriate use. Furthermore, little is known about the potential nephrotoxicity in patients using MPD. This study aimed to investigate the safety of MPD, with focus on the possible effects of this drug on renal function.
Main Methods:
We investigated the effects of MPD on renal perfusion system and renal tubular cells through in vivo and in vitro experimental models.
Key Findings:
In the in vivo experiments, 24 h and 48 h after MPD administration, urea, creatinine, creatinine clearance, and the fractional excretion of sodium and potassium were not changed. In the isolated kidney perfusion, MPD significantly reduced urinary flow, glomerular filtration rate and the percentage of tubular sodium transport. However, the perfusion pressure, renal vascular resistance and the percentage of tubular potassium transport were unchanged in this system. In the canine renal epithelial cell line MDCK culture, MPD was not cytotoxic and, in histopathological analysis, MPD did not promote alterations.
Significance:
Our findings suggest a possible nephrotoxic effect of MPD, since it altered renal function by reducing the glomerular activity, urinary flow and sodium transport. These effects need to be further investigated in order to minimize potential harms associated with the use of MPD.
Insights
Methylphenidate (MPD) may impact kidney function, reducing urinary flow and sodium transport. Further research is needed to understand potential nephrotoxicity risks associated with this ADHD medication.
Area of Science:
- Pharmacology
- Nephrology
- Toxicology
Background:
- Methylphenidate (MPD) is a widely prescribed medication for Attention Deficit Hyperactivity Disorder (ADHD).
- Concerns exist regarding the appropriate use of MPD and its potential adverse effects, particularly on kidney function.
- Limited data is available on the nephrotoxic potential of MPD.
Purpose of the Study:
- To investigate the safety of Methylphenidate (MPD).
- To assess the potential effects of MPD on renal function and identify possible nephrotoxicity.
Main Methods:
- Utilized in vivo and in vitro experimental models to examine MPD's impact on the renal perfusion system and tubular cells.
- Conducted experiments involving isolated kidney perfusion and canine renal epithelial cell line (MDCK) culture.
Main Results:
- In vivo studies showed no significant changes in urea, creatinine, or electrolyte excretion 24-48 hours post-MPD administration.
- Isolated kidney perfusion revealed that MPD significantly decreased urinary flow, glomerular filtration rate, and tubular sodium transport.
- MPD did not exhibit cytotoxicity or cause histopathological alterations in MDCK cell cultures.
Conclusions:
- Findings suggest MPD may possess nephrotoxic potential by impairing glomerular activity, reducing urinary flow, and altering sodium transport.
- Further investigation is warranted to fully elucidate these renal effects and mitigate potential risks associated with MPD treatment.
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