The antipyretic effect of suprofen in rats with yeast-induced fever

Area of Science:

• Pharmacology
• Toxicology

Background:

• Fever management is a critical aspect of medical treatment.
• Non-steroidal anti-inflammatory drugs (NSAIDs) are commonly used for their antipyretic properties.
• Assessing the efficacy and safety profile of new antipyretic agents is essential.

Purpose of the Study:

• To evaluate the antipyretic activity of alpha-methyl--4-(2-thienylcarbonyl)benzeneacetic acid (suprofen).
• To compare the efficacy and safety of suprofen with established antipyretic drugs.
• To determine the dose-response relationship and potential for hypothermia induction by suprofen.

Main Methods:

• Brewer's yeast-induced hyperthermia model in rats.
• Administration of varying doses of suprofen and reference NSAIDs (indometacin, tolmetin, phenylbutazone, acetyl-salicylic acid).
• Measurement of body temperature and calculation of ED50 values for fever reduction.

Main Results:

• Suprofen demonstrated potent antipyretic activity, with the lowest effective dose at 5 mg/kg and restoration of normal temperature at 40 mg/kg.
• The ED50 for suprofen was 10.0 mg/kg, showing significant efficacy compared to acetyl-salicylic acid and phenylbutazone.
• Unlike reference NSAIDs, suprofen did not induce hypothermia even at high doses (160 mg/kg).

Conclusions:

• Suprofen is a highly effective antipyretic agent.
• Suprofen exhibits a favorable safety profile with no observed hypothermic effects.
• Suprofen represents a promising therapeutic option for fever management.