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echinocandin
Echinocandins are antifungal drugs that inhibit the synthesis of glucan in the cell wall, via noncompetitive inhibition of the enzyme 1,3-β glucan synthase and are thus called "penicillin of antifungals"〔http://www.clevelandclinicmeded.com/medicalpubs/pharmacy/mayjune2003/antifungal.htm.〕 (a property shared with papulacandins) as penicillin has a similar mechanism against bacteria but not fungi. Beta glucans are carbohydrate polymers that are cross-linked with other fungal cell wall components (The bacterial equivalent is peptidoglycan). Caspofungin, micafungin, and anidulafungin are semisynthetic echinocandin derivatives with clinical use due to their solubility, antifungal spectrum, and pharmacokinetic properties.
== Medical uses ==
Drugs and drug candidates in this class are fungicidal against some yeasts (most species of ''Candida'', but not against ''Cryptococcus, Trichosporon'', and ''Rhodotorula''). Echinocandins also have displayed activity against ''Candida'' biofilms, especially in synergistic activity with amphotericin B and additive activity with fluconazole. Echinocandins are fungistatic against some molds (''Aspergillus'', but not ''Fusarium'' and ''Rhizopus''), and modestly or minimally active against dimorphic fungi (''Blastomyces'' and ''Histoplasma''). These have some activity against the spores of the fungus ''Pneumocystis carinii''. Caspofungin is used in the treatment of febrile neutropenia and as salvage therapy for the treatment of invasive aspergillosis. Micafungin is used as prophylaxis against ''Candida'' infections in hematopoietic stem cell transplantation patients.〔
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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