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Fitoterapia. 2018 Jun;127:237-244. doi: 10.1016/j.fitote.2018.02.029. Epub 2018 Feb 26.

Antiadhesive hydroalcoholic extract from Apium graveolens fruits prevents bladder and kidney infection against uropathogenic E. coli.

Author information

1
University of Münster, Institute of Pharmaceutical Biology and Phytochemistry, Corrensstrasse 48, D-48149 Münster, Germany.
2
University of Münster, Institute of Biology and Plant Biotechnology, Schlossgarten 3, D-48149 Münster, Germany.
3
Department of Molecular Biology, Pasteur Institute of Iran, Pasteur Avenue, Teheran 13164, Iran.
4
University Hospital Münster, Institute of Hygiene, Mendelstraße 7, D-48149 Münster, Germany.
5
University of Münster, Institute of Pharmaceutical Biology and Phytochemistry, Corrensstrasse 48, D-48149 Münster, Germany. Electronic address: ahensel@uni-muenster.de.

Abstract

Fruits from Apium graveolens (Celery) are used traditionally in Persian and European medicine for the treatment of uncomplicated urinary tract infections. No data are available on A. graveolens extract on the interplay between uropathogenic E. coli and the eukaryotic host cells and on quorum sensing of the bacteria. The present study aimed to characterize an antiadhesive and anti quorum sensing effect of a characterized A. graveolens extract by specific in vitro assays and to correlate these effects with in vivo data obtained by an animal infection model. Hydroalcoholic extract CSE (EtOH-water, 1:1) from A. graveolens fruits was characterized by UHPLC/+ESI-QTOF-MS and investigated on antiproliferative activity against UPEC (strain NU14) and human T24 bladder cells. Antiadhesive properties of CSE were investigated within two different in vitro adhesion assays. For in vivo studies BALB/c mice were used in an UPEC infection model. The effect of CSE on bacterial load in bladder tissue was monitored within a 4- and 7 days pretreatment (200, 500 mg/kg) of the animals. CSE was dominated by the presence of luteolin-glycosides and related flavons besides furocoumarins. CSE had no cytotoxic effects against UPEC and bladder cells. CSE exerts a dose dependent antiadhesive activity against UPEC strains NU14 and UTI89. CSE inhibited in a concentration-dependent manner bacterial quorum sensing. 4- and 7-day pretreatment of animals with CSE transurethrally infected with UPEC NU14, significantly reduced the bacterial load in bladder tissue. CSE is assessed as an antiadhesive extract for which the traditional use in phytotherapy for UTI is justified.

KEYWORDS:

Adhesion; Apium graveolens; Bladder cells; Celery fruits; Uropathogenic E. coli

PMID:
29496563
DOI:
10.1016/j.fitote.2018.02.029
[Indexed for MEDLINE]
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