Nephrotoxicity of cefotiam in rats

Area of Science:

• Pharmacology
• Toxicology
• Nephrology

Background:

• Antibiotics like cefotiam are crucial for treating bacterial infections.
• Assessing the potential kidney toxicity (nephrotoxicity) of new antibiotics is essential for patient safety.

Purpose of the Study:

• To evaluate the nephrotoxicity of cefotiam in Wistar rats.
• To compare the nephrotoxicity of cefotiam with cephalothin, a known reference compound.

Main Methods:

• Rats received intramuscular injections of cefotiam (300, 1,000, 3,000 mg/kg/day) or cephalothin (3,000 mg/kg/day) for five days.
• Nephrotoxicity was assessed by measuring urinary tubular epithelial cells and malate dehydrogenase activity.
• Kidney histology was performed post-treatment and after a recovery period.

Main Results:

• Slight, transient increases in urinary markers were observed at the highest dose (3,000 mg/kg/day) for both cefotiam and cephalothin.
• No pathological kidney changes indicative of nephrotoxicity were found upon histological examination.
• Urinary changes at the highest dose were considered early indicators of potential nephrotoxicity.

Conclusions:

• Cefotiam exhibits a nephrotoxicity profile comparable to cephalothin.
• The maximum non-toxic dose of cefotiam was established as 1,000 mg/kg/day under the study conditions.
• Further monitoring for early urinary changes may be warranted at higher cefotiam doses.