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Products are for research use only. Not for human use. We do not sell to patients.

Signaling Pathway

Anidulafungin

HY-13553

(Ecalta; Eraxis; LY303366)

Anidulafungin
Anidulafungin Chemical Structure

Anidulafungin (LY303366) is a semisynthetic echinocandin used as an antifungal drug. Anidulafungin acts by inhibiting (1,3)-beta-D-glucan synthesis in the fungal cell wall.

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Anidulafungin Data Sheet
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Anidulafungin

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Biological Activity of Anidulafungin

Anidulafungin (LY303366) is a semisynthetic echinocandin used as an antifungal drug. Anidulafungin acts by inhibiting (1,3)-beta-D-glucan synthesis in the fungal cell wall.
IC50 Value:
Target: Antifungal
in vitro:  LY-303366 had MICs of < or = 0.32 microg/ml for all Candida albicans (n = 99), Candida glabrata (n = 18), and Candida tropicalis (n = 10) isolates tested. LY-303366 was also active against Aspergillus species (minimum effective concentration at which 90% of the isolates are inhibited, 0.02 microg/ml) (n = 20), was less active against Candida parapsilosis (MIC at which 90% of the isolates are inhibited [MIC90], 5.12 microg/ml) (n = 10), and was inactive against C. neoformans (MIC90, >10.24 microg/ml) (n = 15) and B. dermatitidis (MIC90, 16 microg/ml) (n = 29) [1]. The Anidulafungin's MICs at which 50% of the isolates were inhibited were 0.125 microg/ml for Candida albicans and C. tropicalis, 0.25 microg/ml for C. krusei, C. kefyr, and C. glabrata, and 2.0 microg/ml for C. parapsilosis [2].
in vivo: Anidulafungin produced a maximal fungal kill (E(max)) of 1.4 to 1.9 log(10) CFU/g in kidneys and was not influenced by resistance to either fluconazole or amphotericin B. Anidulafungin exhibited delayed peak concentrations in kidneys compared to those in serum, after which the concentrations declined, with a serum terminal half-life of 21.6 (+/-4.6) h. This was accompanied by a persistent 96-h decrease in the kidney fungal burden after treatment with a single anidulafungin dose of >/=8 mg/kg of body weight [3]. The efficacy of AFG at 1, 5 and 10 mg/kg was tested against six of the isolates in a murine model of disseminated infection. AFG was able to reduce mortality, showing survival rates of 70-100%, 60-100% and 30-60% in mice treated with AFG at 10, 5 and 1 mg/kg, respectively [4].
 

[1]. Zhanel GG, et al. In vitro activity of a new semisynthetic echinocandin, LY-303366, against systemic isolates of Candida species, Cryptococcus neoformans, Blastomyces dermatitidis, and Aspergillus species. Antimicrob Agents Chemother. 1997 Apr;41(4):863-5.
[2]. Uzun O, et al. In vitro activity of a new echinocandin, LY303366, compared with those of amphotericin B and fluconazole against clinical yeast isolates. Antimicrob Agents Chemother. 1997 May;41(5):1156-7.
[3]. Gumbo T, et al. Anidulafungin pharmacokinetics and microbial response in neutropenic mice with disseminated candidiasis. Antimicrob Agents Chemother. 2006 Nov;50(11):3695-700.
[4]. Calvo E, et al. Efficacy of anidulafungin against Aspergillus niger in vitro and in vivo. Int J Antimicrob Agents. 2011 Oct;38(4):360-3.

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