Author(s): Fatemeh Behoftadeh, Ali Mojtahedi, Elham Hooshmandi

Email(s): mojtahedii.ali@gmail.com , mojtahedi@gums.ac.ir

DOI: 10.5958/0974-360X.2018.00787.4   

Address: Fatemeh Behoftadeh1, Ali Mojtahedi2, Elham Hooshmandi3
1Department of Biology, Rasht Branch, Islamic Azad University, Rasht, Iran
2Department of Microbiology, Faculty of Medicine, Guilan University of Medical Sciences, Rasht, Iran
3Department of Pathobiology, Faculty of Veterinary, Rasht Branch, Islamic Azad University, Rasht, Iran
*Corresponding Author

Published In:   Volume - 11,      Issue - 10,     Year - 2018


ABSTRACT:
Sterility test is an essential procedure for injectable products in pharmaceutical industries. Penicillinase breaks ß-lactam ring of some ß-lactams. The aim of this study was the application of penicillinase in sterility test and its validation in some injectable ß-lactams. Five different ß-lactamswere solved in fluid Acontaining different dilutions of enzyme. Then, Staphylococcus aureus, Pseudomonas aeruginosa, Bacillussubtilis, Clostridiumsporogenes, Candida albicans and Aspergillusniger were inoculated to fluid A separately, and antibiotic solutions were filtered. Filterswere washed with the same dilution of fluid Awithout microorganisms andput in Fluid Thioglycollate Medium (FTM) and Tryptic Soy Broth (TSB). Media were incubated 3 days for bacteria and 5 days for mold and yeast. Microorganisms grew in the presence of Ceftriaxone and Ceftazidime containing 14286 IU/ml of penicillinase.Meanwhile, Cefazolinrequired to 28571 IU/ml and 85741IU/ml of enzyme was necessary in case of Imipenem-Cilastatin. In the presence ofMeropenem,microorganisms grew just after adding 3×106IU/ml enzyme in solvent washing fluid, and 2×105 IU/ml in media.Our results showed that penicillinase can be used for sterility test of above mentioned antibiotics.Lack of this enzyme can lead to false negative results.


Cite this article:
Fatemeh Behoftadeh, Ali Mojtahedi, Elham Hooshmandi. Application of Penicillinase in Validation of Sterility Test in Some Injectable β–Lactam Antibiotics. Research J. Pharm. and Tech 2018; 11(10): 4303-4307. doi: 10.5958/0974-360X.2018.00787.4


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DOI: 10.5958/0974-360X 

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