Candida neoformans

This antimycotic, which was iatroduced for topical use, shows in vitro activity against dermatophytes, species of Candida Jispergillus Coccidioides immitis Histop/asma capsulatum Cryptococcus neoformans and Madure/h species. Petriellidium (Alkscheria) boydii and Phialophora species are less sensitive. 

Flucytosine. Flucytosine (17) or 5-fluorocytosine (4-amino-5-fluoro-2-pyrimidone, 5-FC), C H FN O, is a pyrimidine derivative, that is efficient against Candida albicans Cryptococcus neoformans and Torulopsis glabrata. 

Due to the rapid appearance of resistance, 5FC is only used as a combination partner for the intensive therapy of established severe fungal infections caused by Candida spp., Cryptococcus neoformans and Aspergillus sp. Anorexia, nausea, vomiting, diarrhoea and or abdominal pain occur in 6% of the patients. Of greater concern is the potential for bone marrow depression (seen in 5% of the patients, all with elevated 5FC levels). 

Mycobacterium avium Mycobacterium bovis (BCG) Mycobacterium intracellulare Mycobacterium lepraemurium Mycobacterium smegmatis Salmonella typhimurium Candida albicans Cryptococcus neoformans Leishmania donovani Toxoplasma gondii... 

BPH—benign prostatic hypertrophy BPM—breaths per minute beats per minute BUN—blood urea nitrogen C—mean plasma concentration Cmi]X—maximum plasma concentration Cmm—minimum plasma concentration C albicans—Candida albicans C. bofulinum—Clostridium frotu/irtum C. difficile—Clostridium difficile C. jejuni—Campylobacter jejuni C. neoformans—Cryptococcus neoformans Ca—calcium... 

The combined synergistic effects of cyclo(Leu-Pro) and cyclo(Phe-Pro) were effective against five vancomycin-resistant enterococci (VRE) strains Enterococcus faecium (K-99-38), E. faecalis (K-99-17), E. faecalis (K-99-258), E. faecium (K-01-312), and E. faecalis (K-01-511) with MIC values of 0.25—1 mgl . It also showed activity against E. coli, Staphylococcus aureus. Micrococcus luteus, Candida albicans, and Cryptococcus neoformans with MIC values of 0.25—0.5 mg 1. This combination also showed mutagenic activity against Salmonella typhimurium TA98 and TAIOO strains in a Salmonella mutation assay. ... 

Amphotericin B is used to treat systemic disseminated fungal infections caused by Candida spp., Cryptococcus neoformans, and the invasive dimorphic fungi Aspergillus spp., Histoplasma capsulatum, Coccidioides immi-tis, Blastomyces dermatitidis, and Sporothrix schenckii). Intravenous amphotericin B remains the treatment of choice for serious invasive fungal infections unresponsive to other agents. 

Flucytosine has significant antifungal activity against C. albicans, other Candida spp., C. neoformans, and the fungal organisms responsible for chromomycosis. Not... 

Histoplasma capsulatum, Cryptococcus neoformans, Candida albicans, Sporotrichum schenkii, Blastomyces brasiliensis, Coccidioides immitis, Rhodotorula, Aspergillus etc. It is fungicidal at high and fungistatic at low concentration. 

It is effective against Cryptococcus neoformans and some Candida strains and dermatiaceous moulds which cause chromoblastomycosis. 

The spectrum of activity of flucytosine is restricted to C neoformans, some Candida species, and the dematiaceous molds that cause chromoblastomycosis. Flucytosine is not used as a single agent because of its demonstrated synergy with other agents and to avoid the development of secondary resistance. Clinical use at present is confined to combination therapy, either with amphotericin for... 

Class Synthetic, broad-spectrum bis-triazole antifungal agent with activity against Cryptococcus neoformans md Candida species ... 

Flucytosine (Ancobon) possesses clinically useful activity against Cryptococcus neoformans, Candida species, Torulopsis glabrata, and the agents of chromomycosis. Susceptible fungi deam-inate flucytosine to 5-fluorouracil, which becomes an antimetabolite. Flucytosine, which is excreted by the kidney, should be used cautiously in the setting of renal impairment. Flucytosine is a bone marrow depressant. Flucytosine is used in combination with amphotericin B. 

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