PMID- 32560179 OWN - NLM STAT- PubMed-not-MEDLINE LR - 20200928 IS - 2077-0383 (Print) IS - 2077-0383 (Electronic) IS - 2077-0383 (Linking) VI - 9 IP - 6 DP - 2020 Jun 16 TI - Transient and Persistent Gastric Microbiome: Adherence of Bacteria in Gastric Cancer and Dyspeptic Patient Biopsies after Washing. LID - 10.3390/jcm9061882 [doi] LID - 1882 AB - Helicobacter pylori is a common colonizer of the human stomach, and long-term colonization has been related to development of atrophic gastritis, peptic ulcers and gastric cancer. The increased gastric pH caused by H. pylori colonization, treatment with antibiotics or proton pump inhibitors (PPI) may allow growth of other bacteria. Previous studies have detected non-Helicobacter bacteria in stomach biopsies, but no conclusion has been made of whether these represent a transient contamination or a persistent microbiota. The aim of this study was to evaluate the transient and persistent bacterial communities of gastric biopsies. The washed or unwashed gastric biopsies were investigated by cultivation and microbiota analysis (16S rRNA gene-targeted amplicon sequencing) for the distribution of H. pylori and other non-Helicobacter bacteria. The number of cultured non-Helicobacter bacteria decreased in the washed biopsies, suggesting that they might be a transient contamination. No significant differences in the bacterial diversity were observed in the microbiome analysis between unwashed and washed biopsies. However, the bacterial diversity in biopsies shown H. pylori-positive and H. pylori-negative were significantly different, implying that H. pylori is the major modulator of the gastric microbiome. Further large-scale studies are required to investigate the transient and persistent gastric microbiota. FAU - Spiegelhauer, Malene R AU - Spiegelhauer MR AD - Department of Clinical Microbiology, Rigshospitalet, Henrik Harpestrengs Vej 4A, 2100 Copenhagen, Denmark. FAU - Kupcinskas, Juozas AU - Kupcinskas J AUID- ORCID: 0000-0002-8760-7416 AD - Department of Gastroenterology, Lithuanian University of Health Sciences, Eiveniu str. 2, LT-50009 Kaunas, Lithuania. AD - Institute for Digestive Research, Lithuanian University of Health Sciences, Eiveniu str. 2, LT-50009 Kaunas, Lithuania. FAU - Johannesen, Thor B AU - Johannesen TB AD - Department of Clinical Microbiology and Infection Control, Statens Serum Institute, Artillerivej 5, 2300 Copenhagen, Denmark. FAU - Urba, Mindaugas AU - Urba M AD - Department of Gastroenterology, Lithuanian University of Health Sciences, Eiveniu str. 2, LT-50009 Kaunas, Lithuania. AD - Institute for Digestive Research, Lithuanian University of Health Sciences, Eiveniu str. 2, LT-50009 Kaunas, Lithuania. FAU - Skieceviciene, Jurgita AU - Skieceviciene J AD - Institute for Digestive Research, Lithuanian University of Health Sciences, Eiveniu str. 2, LT-50009 Kaunas, Lithuania. FAU - Jonaitis, Laimas AU - Jonaitis L AD - Department of Gastroenterology, Lithuanian University of Health Sciences, Eiveniu str. 2, LT-50009 Kaunas, Lithuania. FAU - Frandsen, Tove H AU - Frandsen TH AD - Department of Clinical Microbiology, Rigshospitalet, Henrik Harpestrengs Vej 4A, 2100 Copenhagen, Denmark. FAU - Kupcinskas, Limas AU - Kupcinskas L AD - Department of Gastroenterology, Lithuanian University of Health Sciences, Eiveniu str. 2, LT-50009 Kaunas, Lithuania. AD - Institute for Digestive Research, Lithuanian University of Health Sciences, Eiveniu str. 2, LT-50009 Kaunas, Lithuania. FAU - Fuursted, Kurt AU - Fuursted K AD - Department of Clinical Microbiology and Infection Control, Statens Serum Institute, Artillerivej 5, 2300 Copenhagen, Denmark. FAU - Andersen, Leif P AU - Andersen LP AD - Department of Clinical Microbiology, Rigshospitalet, Henrik Harpestrengs Vej 4A, 2100 Copenhagen, Denmark. LA - eng GR - APP-2/2016/Lietuvos Mokslo Taryba/ PT - Journal Article DEP - 20200616 PL - Switzerland TA - J Clin Med JT - Journal of clinical medicine JID - 101606588 PMC - PMC7357088 OTO - NOTNLM OT - Helicobacter pylori OT - culture OT - gastric microbiota OT - microbiome OT - persistent OT - sequencing OT - transient COIS- The authors declare no conflict of interest. The funders had no role in the design of the study; in the collection, analyses or interpretation of data; in the writing of the manuscript or in the decision to publish the results. EDAT- 2020/06/21 06:00 MHDA- 2020/06/21 06:01 PMCR- 2020/06/16 CRDT- 2020/06/21 06:00 PHST- 2020/04/21 00:00 [received] PHST- 2020/06/12 00:00 [revised] PHST- 2020/06/13 00:00 [accepted] PHST- 2020/06/21 06:00 [entrez] PHST- 2020/06/21 06:00 [pubmed] PHST- 2020/06/21 06:01 [medline] PHST- 2020/06/16 00:00 [pmc-release] AID - jcm9061882 [pii] AID - jcm-09-01882 [pii] AID - 10.3390/jcm9061882 [doi] PST - epublish SO - J Clin Med. 2020 Jun 16;9(6):1882. doi: 10.3390/jcm9061882.