PMID- 30951818 OWN - NLM STAT- MEDLINE DCOM- 20190729 LR - 20190729 IS - 1096-1208 (Electronic) IS - 0882-4010 (Linking) VI - 131 DP - 2019 Jun TI - Rhamnolipid-involved antibiotics combinations improve the eradication of Helicobacter pylori biofilm in vitro: A comparison with conventional triple therapy. PG - 112-119 LID - S0882-4010(19)30333-X [pii] LID - 10.1016/j.micpath.2019.04.001 [doi] AB - Antibiotics resistance of H. pylori has been increasing constantly accompanied with decreasing clearance rate clinically, which is demonstrated to be closely related to biofilms with higher resistance than planktonic bacteria for the dense extracellular polymeric substances. Rhamnolipid (RHL) is proved to not only damage the structure of biofilm, but also potentially inhibit bacterial adhesion. To investigate if RHL could promote eradicating rate of the conventional triple therapy to H. pylori biofilm and hence attenuate the resistance and relapse of H. pylori, first-line antibiotics clarithromycin (CLR), amoxicillin (AMX) or/and proton pump inhibitor (PPI) involved single, dual or triple therapies were compared with RHL-containing drug combinations on eradicating H. pylori biofilm. The residual biofilm biomass, the survival of bacteria inside the remaining biofilm and the planktonic bacteria dispersed from the biofilm after treatment were tested. Combination with RHL significantly improved the ability of antibiotics to eradicate H. pylori biofilm, especially RHL combined with AMX and PPI could eradicate more than 95% of biofilm showing much more effective ability than the conventional triple therapy CLR + AMX + PPI. Additionally, the combination of RHL and antibiotics could effectively inhibit the biofilm formation at lower concentration. Thus, RHL might be used as a potential antibiotic adjuvant on anti-H. pylori therapy to enhance eradicating ability of antibiotics to biofilms. CI - Copyright (c) 2019. Published by Elsevier Ltd. FAU - Chen, Xiaonan AU - Chen X AD - Lab of Pharmaceutic, School of Pharmaceutical Sciences, Sun Yat-sen University, Guangzhou, 510006, PR China. Electronic address: 405764607@qq.com. FAU - Li, Pengyu AU - Li P AD - Lab of Pharmaceutic, School of Pharmaceutical Sciences, Sun Yat-sen University, Guangzhou, 510006, PR China. Electronic address: 239938118@qq.com. FAU - Shen, Yuanna AU - Shen Y AD - Lab of Pharmaceutic, School of Pharmaceutical Sciences, Sun Yat-sen University, Guangzhou, 510006, PR China. Electronic address: 2258872734@qq.com. FAU - Zou, Yiqing AU - Zou Y AD - Lab of Pharmaceutic, School of Pharmaceutical Sciences, Sun Yat-sen University, Guangzhou, 510006, PR China. Electronic address: 386091617@qq.com. FAU - Yuan, Gang AU - Yuan G AD - Department of Gastroenterology, The First Affiliated Hospital, Sun Yat-sen University, Guangzhou, 510080, PR China; Department of Geriatrics, The First Affiliated Hospital, Sun Yat-sen University, Guangzhou, 510080, PR China. Electronic address: wongangzsu@163.com. FAU - Hu, Haiyan AU - Hu H AD - Lab of Pharmaceutic, School of Pharmaceutical Sciences, Sun Yat-sen University, Guangzhou, 510006, PR China. Electronic address: lsshhy@mail.sysu.edu.cn. LA - eng PT - Journal Article DEP - 20190402 PL - England TA - Microb Pathog JT - Microbial pathogenesis JID - 8606191 RN - 0 (Glycolipids) RN - 0 (Proton Pump Inhibitors) RN - 0 (rhamnolipid) RN - 804826J2HU (Amoxicillin) RN - H1250JIK0A (Clarithromycin) MH - Amoxicillin/pharmacology MH - Biofilms/*drug effects/growth & development MH - Clarithromycin/pharmacology MH - Drug Resistance, Bacterial MH - Drug Synergism MH - Drug Therapy, Combination MH - Glycolipids/*pharmacology MH - Helicobacter pylori/*drug effects/growth & development MH - Microbial Sensitivity Tests MH - Microbial Viability/drug effects MH - Proton Pump Inhibitors/pharmacology OTO - NOTNLM OT - Antibiotics combination OT - Biofilms OT - Eradication OT - Helicobacter pylori OT - Rhamnolipid EDAT- 2019/04/06 06:00 MHDA- 2019/07/30 06:00 CRDT- 2019/04/06 06:00 PHST- 2019/02/23 00:00 [received] PHST- 2019/03/29 00:00 [revised] PHST- 2019/04/01 00:00 [accepted] PHST- 2019/04/06 06:00 [pubmed] PHST- 2019/07/30 06:00 [medline] PHST- 2019/04/06 06:00 [entrez] AID - S0882-4010(19)30333-X [pii] AID - 10.1016/j.micpath.2019.04.001 [doi] PST - ppublish SO - Microb Pathog. 2019 Jun;131:112-119. doi: 10.1016/j.micpath.2019.04.001. Epub 2019 Apr 2.