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Disruption of Enterococcus Faecalis biofilms using individual and plasma polymer encapsulated D-amino acids.

Abstract：

OBJECTIVE:Our aim was to assess the anti-biofilm ability of previously unverified individual D-amino acids (DAAs), to produce plasma polymer encapsulated DAAs (PPEDAAs), to measure the shell thickness and subsequent release of DAAs, and to assess the effects of PPEDAAs on Enterococcus faecalis biofilms. MATERIALS AND METHODS:Microtitre tray assays were used to evaluate the effect of individual DAAs (D-leucine, D-methionine, D-tryptophan, and D-tyrosine) on E. faecalis biofilms of different maturity. A mixture and individual DAAs were encapsulated with a plasma polymer for 10, 20, 40, and 60 min. The shell thickness of PPEDAAs was analyzed by ultra-high-resolution scanning electron microscopy. The release of DAAs from the PPEDAAs encapsulated for 60 min was measured over 7 days using high-performance liquid chromatography. Static biofilms were used to assess the effect of PPEDAAs on E. faecalis biofilms. RESULTS:Individual DAAs reduced biofilm formation to various degrees, according to the DAA and the experimental times. The shell thicknesses of the PPEDAAs ranged between 31 and 76 nm and increased with encapsulation time. Diffusion of DAAs from the PPEDAAs occurred over 60 min for encapsulated D-leucine, D-methionine, and D-tyrosine and up to 7 days for D-tryptophan. PPEDAAs disrupted biofilms at every experimental time. CONCLUSIONS:PPEDAAs of various shell thickness can be produced with the proposed methodology, DAAs are subsequently released, and the anti-biofilm activity remains unaltered. CLINICAL RELEVANCE:Individual DAAs and PPEDAAs have anti-biofilm ability and can be considered as part of a biological strategy in endodontics.

journal_name

Clin Oral Investig

journal_title

Clinical oral investigations

authors

Khider D,Rossi-Fedele G,Fitzsimmons T,Vasilev K,Zilm PS

doi

10.1007/s00784-020-03663-0

subject

Has Abstract

pub_date

2020-11-02 00:00:00

eissn

1432-6981

issn

1436-3771

pii

10.1007/s00784-020-03663-0

pub_type

杂志文章

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