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The Mechanism of Drug Nephrotoxicity and the Methods for Preventing Kidney Damage
Ewa Kwiatkowska1, Leszek Domański1, Violetta Dziedziejko2
1Clinical Department of Nephrology, Transplantology and Internal Medicine, Pomeranian Medical University, 70-111 Szczecin, Poland.
Abstract:
Acute kidney injury (AKI) is a global health challenge of vast proportions, as approx. 13.3% of people worldwide are affected annually. The pathophysiology of AKI is very complex, but its main causes are sepsis, ischemia, and nephrotoxicity. Nephrotoxicity is mainly associated with the use of drugs. Drug-induced AKI accounts for 19-26% of all hospitalized cases. Drug-induced nephrotoxicity develops according to one of the three mechanisms: (1) proximal tubular injury and acute tubular necrosis (ATN) (a dose-dependent mechanism), where the cause is related to apical contact with drugs or their metabolites, the transport of drugs and their metabolites from the apical surface, and the secretion of drugs from the basolateral surface into the tubular lumen; (2) tubular obstruction by crystals or casts containing drugs and their metabolites (a dose-dependent mechanism); (3) interstitial nephritis induced by drugs and their metabolites (a dose-independent mechanism). In this article, the mechanisms of the individual types of injury will be described. Specific groups of drugs will be linked to specific injuries. Additionally, the risk factors for the development of AKI and the methods for preventing and/or treating the condition will be discussed.
Insights
Drug-induced acute kidney injury (AKI) affects millions globally. This review details three mechanisms of drug nephrotoxicity: tubular injury, obstruction, and interstitial nephritis, along with risk factors and prevention strategies.
Area of Science:
- Nephrology
- Pharmacology
- Toxicology
Background:
- Acute kidney injury (AKI) is a significant global health issue, affecting approximately 13.3% of the world's population annually.
- Key causes of AKI include sepsis, ischemia, and nephrotoxicity, with drug-induced nephrotoxicity accounting for 19-26% of hospitalized cases.
Purpose of the Study:
- To elucidate the distinct mechanisms of drug-induced nephrotoxicity.
- To correlate specific drug classes with particular types of kidney injury.
- To discuss risk factors and preventive or therapeutic strategies for drug-induced AKI.
Main Methods:
- Review of existing literature on drug-induced nephrotoxicity.
- Categorization of nephrotoxic mechanisms into tubular injury, tubular obstruction, and interstitial nephritis.
- Analysis of dose-dependent and dose-independent pathways.
Main Results:
- Drug-induced nephrotoxicity occurs via three primary mechanisms: proximal tubular injury/acute tubular necrosis (ATN), tubular obstruction by drug crystals/casts, and interstitial nephritis.
- Proximal tubular injury and tubular obstruction are typically dose-dependent, while interstitial nephritis is dose-independent.
- Specific drug groups are associated with each of these injury types.
Conclusions:
- Understanding the mechanisms of drug-induced AKI is crucial for effective management.
- Identification of risk factors and implementation of preventive measures can mitigate the incidence of drug nephrotoxicity.
- Further research into targeted therapies for drug-induced kidney injury is warranted.
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