当前位置： SCI文献检索 > Asian Pacific Journal of Tropical Medicine期刊下所有文献 > Anti-encystment and amoebicidal activity of Lonicera japonica Thunb. and its major constituent chlorogenic acid in vitro.

Anti-encystment and amoebicidal activity of Lonicera japonica Thunb. and its major constituent chlorogenic acid in vitro.

Abstract：

OBJECTIVE:To examine the acanthamoebicidal effects of ethyl acetate, aqueous and butanol fractions of dried flower buds of Lonicera japonica (L. japonica) Thunb. (Flos Lonicerae) in vitro. METHODS:Acanthamoeba triangularis isolates were obtained from environmental water samples and identified by PCR. They were exposed to ethyl acetate, water and butanol fractions of L. japonica Thunb. at concentrations ranging from 0.5 mg/mL to 1.5 mg/mL. The extracts were evaluated for growth inhibition at 24, 48 and 72 h, respectively. Chlorogenic acid at a concentration of 1 mg/mL was examined for inhibition of encystment. RESULTS:Ethyl acetate fraction at a concentration of 1.5 mg/mL evoked a significant reduction of trophozoite viability by 48.9% after 24 h, 49.2% after 48 h and 33.7% after 72 h chlorogenic acid, the major active constituent of L. japonica Thunb. at the concentration of 1 mg/mL reduced the cysts/trophozoite ratio by 100% after 24 h, 84.0% after 48 h and 72.3% after 72 h. This phenolic compound at concentration of 1 mg/mL concurrent with 0.6% hydrogen peroxide inhibited hydrogen peroxide-induced encystment by 92.8% at 72 h. CONCLUSIONS:Results obtained from this study show that ethyl acetate fraction at 1.5 mg/mL is the most potent fraction of L. japonica Thunb. and its major constituent chlorogenic acid showed the remarkable inhibition of encystment at a concentration of 1 mg/mL.

journal_name

Asian Pac J Trop Med

journal_title

Asian Pacific journal of tropical medicine

authors

Mahboob T,Azlan AM,Tan TC,Samudi C,Sekaran SD,Nissapatorn V,Wiart C

doi

10.1016/j.apjtm.2016.07.008

subject

Has Abstract

pub_date

2016-09-01 00:00:00

pages

866-871

issue

9

eissn

1995-7645

issn

2352-4146

pii

S1995-7645(16)30145-6

journal_volume

9

pub_type

杂志文章

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