Nazione: Malesia
Lingua: inglese
Fonte: NPRA (National Pharmaceutical Regulatory Agency, Bahagian Regulatori Farmasi Negara)
CILASTATIN SODIUM; IMIPENEM
UNIMED SDN BHD
CILASTATIN SODIUM; IMIPENEM
1 Vials
Venus Remedies Limited
LASTINEM-500 (IMIPENEM AND CILASTATIN POWDER FOR SOLUTION FOR INFUSION 500 MG/ 500MG) DESCRIPTION Before Reconstitution: White to pale yellow crystalline powder filled in glass vial. After Reconstitution: Clear Solution. Appropriate diluents can be used for reconstitution are 0.9% Sodium Chloride Injection, 5% Dextrose Injection COMPOSITION LASTINEM-500 (IMIPENEM AND CILASTATIN POWDER FOR SOLUTION FOR INFUSION 500 MG/ 500MG) Each vial contains: Sterile Imipenem USP equivalent to Anhydrous Imipenem 500 mg Sterile Cilastatin Sodium USP equivalent to Cilastatin 500 mg Sterile Sodium bicarbonate is used as a buffer. PHARMACODYNAMICS Imipenem, also referred to as N-formimidoyl-thienamycin, is a semi-synthetic derivative of thienamycin, the parent compound produced by the filamentous bacterium Streptomyces cattleya. Imipenem exerts its bactericidal activity by inhibiting bacterial cell wall synthesis in Gram-positive and Gram-negative bacteria through binding to penicillin-binding proteins (PBPs). Cilastatin sodium is a competitive, reversible and specific inhibitor of dehydropeptidase-I, the renal enzyme which metabolizes and inactivates imipenem. It is devoid of intrinsic antibacterial activity and does not affect the antibacterial activity of imipenem. PHARMACOKINETIC/PHARMACODYNAMIC (PK/PD) RELATIONSHIP Similar to other beta-lactam antibacterial agents, the time that imipenem concentrations exceed the MIC (T>MIC) has been shown to best correlate with efficacy. MECHANISM OF RESISTANCE Resistance to imipenem may be due to the following: • Decreased permeability of the outer membrane of Gram-negative bacteria (due to diminished production of porins) • Imipenem may be actively removed from the cell with an efflux pump. • Reduced affinity of PBPs to imipenem • Imipenem is stable to hydrolysis by most beta-lactamases, including penicillinases and cephalosporinases produced by gram-positive and gram-negative bacteria, with the exception of relatively rare carbapenem hydrolysing beta-lactamases. Species resistant t Leggi il documento completo