期刊
ANTIMICROBIAL AGENTS AND CHEMOTHERAPY
卷 65, 期 5, 页码 -出版社
AMER SOC MICROBIOLOGY
DOI: 10.1128/AAC.02165-20
关键词
Leishmania; promastigote; amastigote; cutaneous leishmaniasis; flavonoids; bioflavonoids; antileishmanial
资金
- Hong Kong Research Grant Council General Research Fund [560813]
- Hong Kong Polytechnic University Project of Strategic Importance [1-ZE22, YZ1Q, G-YBUX]
- Hong Kong Scholars Program
A library of 38 novel flavonoid compounds linked with amines were synthesized, with the most promising candidate FM09h showing potent in vitro activity against parasites causing cutaneous leishmaniasis. In a mouse model, intralesional injection of FM09h demonstrated a promising effect in reducing footpad lesion thickness, comparable to sodium stibogluconate.
We have designed, synthesized, and characterized a library of 38 novel flavonoid compounds linked with amines. Some of these amine-linked flavonoids have potent in vitro activity against parasites that cause cutaneous leishmaniasis, a tropical disease endemic in 80 countries worldwide. The most promising candidate, FM09h, was highly active, with a 50% inhibitory concentration (IC50) of 0.3 mu M against Leishmania amazonensis, L. tropica, and L. braziliensis amastigotes. It was metabolically stable, with 39% and 66% of FM09h remaining after 30-minute incubation with human and rat liver microsomes, respectively. In L. amazonensis LV78 cutaneous leishmaniasis mouse model, intralesional injection of FM09h (10 mg/kg, once every 4 days for 8 times) demonstrated promising effect in reducing the footpad lesion thickness by 72%, displaying an efficacy comparable to that of sodium stibogluconate (SSG) (63%).
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