Analgesic abuse and kidney disease

Area of Science:

• Nephrology
• Clinical Pharmacology
• Epidemiology

Background:

• The analgesic syndrome, characterized by renal disease, hypertension, peptic ulcers, anemia, and headaches, causes significant morbidity and mortality.
• Epidemiological and clinical data implicate unsupervised use of compound analgesics, particularly phenacetin-containing preparations, in the majority of cases.

Purpose of the Study:

• To investigate the causation of the analgesic syndrome.
• To reconcile conflicting deductive and experimental data regarding analgesic nephropathy.
• To propose strategies for the prevention of the analgesic syndrome.

Main Methods:

• Review of epidemiological and clinical evidence.
• Analysis of laboratory experiments on analgesic toxicity in small animals.
• Preliminary observations on the interaction between salicylates and phenacetin derivatives.

Main Results:

• Laboratory models have not fully replicated clinical analgesic nephropathy.
• Papillary necrosis is more readily induced by aspirin and other anti-inflammatory agents than phenacetin alone in animal models.
• Salicylates may enhance the toxicity of phenacetin derivatives, potentially reconciling conflicting data.

Conclusions:

• Non-narcotic drug dependency plays a central etiological role in the analgesic syndrome.
• Compound analgesics and those with stimulants should be available under monitored conditions.
• Addressing the behavioral and environmental origins of analgesic dependency requires collaboration between physicians and social engineers.