A Novel Antimicrobial–Phytochemical Conjugate With Antimicrobial Activity Against Streptococcus uberis, Enterococcus faecium, and Enterococcus faecalis

Antimicrobial resistance is one of the major threats to human and animal health. An effective strategy to reduce and/or delay antimicrobial resistance is to use combination therapies. Research in our laboratory has been focused on combination therapies of antimicrobials and phytochemicals and develo...

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Main Authors: Karthic Rajamanickam, Jian Yang, Meena Kishore Sakharkar
Format: Article
Language:English
Published: Frontiers Media S.A. 2019-11-01
Series:Frontiers in Pharmacology
Subjects:
Online Access:https://www.frontiersin.org/article/10.3389/fphar.2019.01405/full
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author Karthic Rajamanickam
Jian Yang
Meena Kishore Sakharkar
author_facet Karthic Rajamanickam
Jian Yang
Meena Kishore Sakharkar
author_sort Karthic Rajamanickam
collection DOAJ
description Antimicrobial resistance is one of the major threats to human and animal health. An effective strategy to reduce and/or delay antimicrobial resistance is to use combination therapies. Research in our laboratory has been focused on combination therapies of antimicrobials and phytochemicals and development of antimicrobial–phytochemical conjugates. In this study, we report the synthesis and antimicrobial activity of a novel sulfamethoxazole–gallic acid conjugate compound (Hybrid 1). Hybrid 1 not only showed much stronger activity than sulfamethoxazole towards Streptococcus uberis 19436, Enterococcus faecium 700221, and Enterococcus faecalis 29212, which were purchased from American Type Culture Collection (ATCC), but also exhibited a promising antimicrobial effect against two E. faecalis clinical isolates, one of which was multidrug-resistant. Further studies are warranted to establish the in vivo antimicrobial activity for Hybrid 1 and develop more potent sulfamethoxazole–gallic acid-based antimicrobial conjugates using hybrid 1 as a lead compound.
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spelling doaj.art-d3a5a7157c834af18f8a1a31923aa6322022-12-21T19:08:07ZengFrontiers Media S.A.Frontiers in Pharmacology1663-98122019-11-011010.3389/fphar.2019.01405491648A Novel Antimicrobial–Phytochemical Conjugate With Antimicrobial Activity Against Streptococcus uberis, Enterococcus faecium, and Enterococcus faecalisKarthic RajamanickamJian YangMeena Kishore SakharkarAntimicrobial resistance is one of the major threats to human and animal health. An effective strategy to reduce and/or delay antimicrobial resistance is to use combination therapies. Research in our laboratory has been focused on combination therapies of antimicrobials and phytochemicals and development of antimicrobial–phytochemical conjugates. In this study, we report the synthesis and antimicrobial activity of a novel sulfamethoxazole–gallic acid conjugate compound (Hybrid 1). Hybrid 1 not only showed much stronger activity than sulfamethoxazole towards Streptococcus uberis 19436, Enterococcus faecium 700221, and Enterococcus faecalis 29212, which were purchased from American Type Culture Collection (ATCC), but also exhibited a promising antimicrobial effect against two E. faecalis clinical isolates, one of which was multidrug-resistant. Further studies are warranted to establish the in vivo antimicrobial activity for Hybrid 1 and develop more potent sulfamethoxazole–gallic acid-based antimicrobial conjugates using hybrid 1 as a lead compound.https://www.frontiersin.org/article/10.3389/fphar.2019.01405/fullantimicrobial resistanceantimicrobial–phytochemical conjugatechemical synthesisminimum inhibitory concentrationStreptococcusEnterococcus
spellingShingle Karthic Rajamanickam
Jian Yang
Meena Kishore Sakharkar
A Novel Antimicrobial–Phytochemical Conjugate With Antimicrobial Activity Against Streptococcus uberis, Enterococcus faecium, and Enterococcus faecalis
Frontiers in Pharmacology
antimicrobial resistance
antimicrobial–phytochemical conjugate
chemical synthesis
minimum inhibitory concentration
Streptococcus
Enterococcus
title A Novel Antimicrobial–Phytochemical Conjugate With Antimicrobial Activity Against Streptococcus uberis, Enterococcus faecium, and Enterococcus faecalis
title_full A Novel Antimicrobial–Phytochemical Conjugate With Antimicrobial Activity Against Streptococcus uberis, Enterococcus faecium, and Enterococcus faecalis
title_fullStr A Novel Antimicrobial–Phytochemical Conjugate With Antimicrobial Activity Against Streptococcus uberis, Enterococcus faecium, and Enterococcus faecalis
title_full_unstemmed A Novel Antimicrobial–Phytochemical Conjugate With Antimicrobial Activity Against Streptococcus uberis, Enterococcus faecium, and Enterococcus faecalis
title_short A Novel Antimicrobial–Phytochemical Conjugate With Antimicrobial Activity Against Streptococcus uberis, Enterococcus faecium, and Enterococcus faecalis
title_sort novel antimicrobial phytochemical conjugate with antimicrobial activity against streptococcus uberis enterococcus faecium and enterococcus faecalis
topic antimicrobial resistance
antimicrobial–phytochemical conjugate
chemical synthesis
minimum inhibitory concentration
Streptococcus
Enterococcus
url https://www.frontiersin.org/article/10.3389/fphar.2019.01405/full
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