[Pharmacokinetics and clinical evaluation of aztreonam in pediatrics]
Insights
Aztreonam (AZT), a novel monobactam antibiotic, shows favorable pharmacokinetics and significant in vivo efficacy in pediatric patients, particularly against Gram-negative bacteria like E. coli and P. aeruginosa.
Area of Science:
- Pharmacology
- Microbiology
- Pediatrics
Context:
- Aztreonam (AZT) is a novel synthetic monobactam antibiotic.
- Pediatric pharmacokinetics and clinical efficacy require thorough investigation.
Purpose:
- To evaluate the pharmacokinetics, in vitro activity, and in vivo efficacy of aztreonam in pediatric patients.
- To assess the safety profile of aztreonam in this population.
Summary:
- Aztreonam demonstrated predictable pharmacokinetics in children, primarily eliminated via urinary excretion.
- In vitro studies showed potent activity against E. coli and P. aeruginosa, with no activity against Gram-positive cocci.
- In vivo, aztreonam achieved a 66.7% effective ratio in treating various pediatric infections, with mild adverse events noted.
Impact:
- This study provides crucial data on aztreonam's use in pediatric populations, informing clinical practice.
- Highlights aztreonam's potential as a therapeutic option for Gram-negative infections in children.
- Identifies potential side effects, such as exanthema and elevated liver enzymes, for monitoring.
Abstract:
Pharmacokinetics, in vitro, and in vivo effect of aztreonam (SQ 26,776, AZT), a newly synthesized monobactam antibiotic, were investigated in pediatric patients. The pharmacokinetics were studied in 12 children without renal or hepatic impairment, each of whom received single 10, 20 and 40 mg/kg intravenous doses of drug. Serial samples of serum and urine were assayed for AZT. Serum pharmacokinetics of AZT were described by an open, linear, two-compartment kinetic model. After intravenous administration, AZT was eliminated primarily by urinary excretion of unchanged drug (60.4%). The average biological half-lives of AZT in serum were 1.33 (10 mg/kg, n = 1), 1.69 +/- 0.40 (20 mg/kg, n = 8), and 1.51 +/- 0.61 (40 mg/kg, n = 3) hours. The antibacterial activity of AZT against E. coli and P. aeruginosa was equal or slightly stronger than that of CPZ, LMOX, and CTX. It had no antimicrobial activity against Gram-positive cocci. In vivo effect of AZT was evaluated in 13 children with various infections. The result was excellent in 7 cases, good in 1 case, fair in 3 cases and poor in 1 case, with effective ratio of 66.7%. Exanthema or elevation of GOT and GPT were noticed in 3 patients.
More Related Videos
11:17Multiplex Therapeutic Drug Monitoring by Isotope-dilution HPLC-MS/MS of Antibiotics in Critical Illnesses
Published on: August 30, 2018
09:26Antibiotic Efficacy Testing in an Ex vivo Model of Pseudomonas aeruginosa and Staphylococcus aureus Biofilms in the Cystic Fibrosis Lung
Published on: January 22, 2021
Related Concept Videos
Estimation of k and VD of Aminoglycosides
Drug Dosing: Infants and Children
Pharmacokinetics in Pediatric Patients: Overview and Drug Absorption
Pharmacokinetics in Pediatric Patients: Drug Distribution
Pharmacokinetics in Pediatric Patients: Drug Metabolism
Pharmacokinetics in Pediatric Patients: Drug Excretion
