Page 151 - MNU-PM502- Pharmaeutical Microbiology Theoritical Book
P. 151

Pharm D- Clinical Pharmacy Program        Third Level          Pharmaceutical Microbiology& Antimicrobials (PM 502)


              2- Azoles

                  The azoles may be considered as two subgroups:

                                                 ➢  Imidazole (the older drugs)
                                                 ➢  Trialzole (the newer drugs)


                 Mechanism of action:


                           blocking the demethylation
                           of lanosterol to ergosterol




                             Accumulation of toxic
                               intermediate sterols



                              Increased membrane

                            permeability, cell death




                                                          Imidazole
                       Clotrimazole      Miconazole     Ketoconazole        Econazole

                    •  Majority are used as topical products


                    •  Used for the treatment of superficial infections by
                         ➢  Dermatophytes (skin pathogens)


                         ➢  Pityriasis species (causing flaky skin and dandruff)
                         ➢   Candida albicans












                                                              138
   146   147   148   149   150   151   152   153   154   155   156