USING OF BENZATIN-PENICILLIN FOR SECONDARY RHEUMATISM PREVENTION: PROBLEMS AND APPROACHES

Abstract

Aim: To study the efficacy and lolerability of new benzatin-penicitlin (Extencillin, A VENTIS, France, Germany) as a means of prevention of A-streptococcal tonsillites and following repeated rheumatic attacks and also the data of comparative pharmacokinetics assessment for three therapeutical forms of benzatin-penicillin (Extencillin powder for injections 2.4 tnln U.; Bicillin-5 powder for injections 1.5 mln U, SYNTHESIS. Kurgan, Russia). Results: On prescribing Extencillin in dosage of 2.4 mln U i.m. once per three weeks to 60 pts with reliable rheumatism for 3 years the stable normalization of titers of antistreptolysin-0 was noticed in 8S.2% pts, absence of hemolytic streptococci in fauces - in 86.7%. There were no repeated rheumatic attacks in any patient. In 6.67% cases side effects were noticed (eosinophilia, skin itching) which were short-termed, reversible, and did not require cancellation of the drug. In comparative study off pharmacokinetics it was determined that after Extencillin administration in dosage of 2.4 mln U. concentration of benzyl-penicillin was enough for inhibition of 13-hemolytic A-streptococci (> 0.025 mkg/ml) was preserved for 3-weeks term in 83.3% of cases. After injection of Extencillin 1.2 mln U of Bicillin-5 1.5 mln U this level of benzyl-penicillin was noticed on 21 day’ in 30 and 0% cases cotrespondingly Conclusion: High and prolonged antistreptococcal activity> and good tolerability of Extencillin 2.4 mln U. allow us to recommend it as an effective remedy for secondary prevention of rheumatism. Due to discrepancy to pharmacokinetic requirements to preventive drugs, medical forms of benzatin-penicillin such as Extencillin 1. 2 mln U and Bicillin-5 1.5 mln U. are not acceptable for adequate rheumatism prevention in adult patients.