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Tenofovir nephrotoxicity: 2011 update.

Beatriz Fernandez-Fernandez¹, Ana Montoya-Ferrer, Ana B Sanz

¹Nefrología, IIS-Fundacion Jimenez Diaz, Fundacion Renal Iñigo Alvarez de Toledo/Instituto Reina Sofia de Investigacion Nefrologica (FRIAT/IRSIN), Universidad Autonoma de Madrid, Madrid, Spain.

AIDS Research and Treatment

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Summary

Tenofovir, used for HIV and HBV, can cause kidney injury due to accumulation in proximal tubules. Monitoring and risk factor identification are crucial for managing tenofovir nephrotoxicity.

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Area of Science:

Nephrology
Pharmacology
Virology

Background:

Tenofovir is a widely used antiviral medication for HIV and Hepatitis B.
It is structurally similar to known nephrotoxic drugs.
Despite initial safety data, clinical use shows a risk of kidney injury.

Purpose of the Study:

To investigate the mechanism and characteristics of tenofovir-induced nephrotoxicity.
To highlight the importance of monitoring renal function in patients using tenofovir.
To discuss potential strategies for mitigating tenofovir-related kidney damage.

Main Methods:

Review of clinical data and pharmacological properties of tenofovir.
Analysis of tenofovir's interaction with proximal tubular cells.
Correlation of drug accumulation with observed renal dysfunction.

Main Results:

Tenofovir accumulates in proximal tubular cells due to active secretion.
This accumulation leads to proximal tubular cell dysfunction.
Nephrotoxicity can manifest as acute kidney injury or chronic kidney disease.

Conclusions:

Tenofovir nephrotoxicity is a significant clinical concern despite its efficacy.
Understanding risk factors and regular monitoring are essential for patient safety.
Development of safer tenofovir derivatives is ongoing.