Evidence map›Paper›PMID 33843198›Full record

ArticleACS infectious diseases2021

Antibiotic Therapy and the Gut Microbiome: Investigating the Effect of Delivery Route on Gut Pathogens.

Stephen A Kelly, Jonathan Nzakizwanayo, Aoife M Rodgers, Li Zhao, Rebecca Weiser, Ismaiel A Tekko, Helen O McCarthy, Rebecca J Ingram, Brian V Jones, Ryan F Donnelly and 1 more

Open access · greenAbstract read
In one paragraph

Article in ACS infectious diseases, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 31 papers, 3 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
31citing papers in PubMed, 3 pooled it
2.4field-weighted citation impact, top 10% of its field
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

31 citing papers in PubMed, 3 syntheses or guidelines pooled it, 43 citations in OpenAlex.

  1. Guideline
  2. Pooled it
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  6. Article
  7. Article
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  9. The intestinal microbiota impacts nutritional immunity and resistance toProceedings of the National Academy of Sciences of the United States of America · 2026
    Article
  10. Association between Broad-Spectrum Antibiotic Use and Risk of Early-Onset Colorectal Cancer.Cancer epidemiology, biomarkers & prevention : a publication of the American Association for Cancer Research, cosponsored by the American Society of Preventive Oncology · 2026
    Article
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4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

11 authors at 5 institutions in 3 countries.

Stephen A KellySchool of Pharmacy, Queen's University Belfast, 97 Lisburn Road, Belfast, U.K., BT9 7BL.ORCID 0000-0002-8907-9661
Jonathan NzakizwanayoDepartment of Biology & Biochemistry, University of Bath, Claverton Down, Bath, U.K., BA2 7AX.
Aoife M RodgersDepartment of Biology, Maynooth University, Maynooth, Co. Kildare, Ireland, W23 F2K8.
Li ZhaoSchool of Pharmacy, Queen's University Belfast, 97 Lisburn Road, Belfast, U.K., BT9 7BL.
Rebecca WeiserMicrobiomes, Microbes and Informatics Group, Organisms and Environment Division, Cardiff School of Biosciences, Cardiff University Cardiff, U.K., CF10 3AX.
Ismaiel A TekkoSchool of Pharmacy, Queen's University Belfast, 97 Lisburn Road, Belfast, U.K., BT9 7BL.
Helen O McCarthySchool of Pharmacy, Queen's University Belfast, 97 Lisburn Road, Belfast, U.K., BT9 7BL.
Rebecca J IngramWellcome-Wolfson Institute for Experimental Medicine, School of Medicine, Dentistry and Biomedical Sciences, Queen's University Belfast, 97 Lisburn Road, Belfast, U.K., BT9 7BL.
Brian V JonesDepartment of Biology & Biochemistry, University of Bath, Claverton Down, Bath, U.K., BA2 7AX.
Ryan F DonnellySchool of Pharmacy, Queen's University Belfast, 97 Lisburn Road, Belfast, U.K., BT9 7BL.ORCID 0000-0002-0766-4147
Brendan F GilmoreSchool of Pharmacy, Queen's University Belfast, 97 Lisburn Road, Belfast, U.K., BT9 7BL.
Queen's University Belfast · GBUniversity of Bath · GBCardiff University · GBNational University of Ireland, Maynooth · IEUniversity of Aleppo · SY

Funding

Wellcome Trust 206854Wellcome Trust 206854/Z/17/ZWellcome Trust UNS39792
6 · The paper itself

Abstract

The contribution of the gut microbiome to human health has long been established, with normal gut microbiota conferring protection against invasive pathogens. Antibiotics can disrupt the microbial balance of the gut, resulting in disease and the development of antimicrobial resistance. The effect of antibiotic administration route on gut dysbiosis remains under-studied to date, with conflicting evidence on the differential effects of oral and parenteral delivery. We have profiled the rat gut microbiome following treatment with commonly prescribed antibiotics (amoxicillin and levofloxacin), via either oral or intravenous administration. Fecal pellets were collected over a 13-day period and bacterial populations were analyzed by 16S rRNA gene sequencing. Significant dysbiosis was observed in all treatment groups, regardless of administration route. More profound dysbiotic effects were observed following amoxicillin treatment than those with levofloxacin, with population richness and diversity significantly reduced, regardless of delivery route. The effect on specific taxonomic groups was assessed, revealing significant disruption following treatment with both antibiotics. Enrichment of a number of groups containing known gut pathogens was observed, in particular, with amoxicillin, such as the family Enterobacteriaceae. Depletion of other commensal groups was also observed. The degree of dysbiosis was significantly reduced toward the end of the sampling period, as bacterial populations began to return to pretreatment composition. Richness and diversity levels appeared to return to pretreatment levels more quickly in intravenous groups, suggesting convenient parenteral delivery systems may have a role to play in reducing longer term gut dysbiosis in the treatment of infection.

Indexed as

Gastrointestinal MicrobiomeAnimalsAnti-Bacterial AgentsDysbiosisEnterobacteriaceaeRatsRNA, Ribosomal, 16SAnti-Bacterial AgentsRNA, Ribosomal, 16Santibioticdysbiosisgutmicrobiomepathogenroute of administration

Identifiers

PMID33843198
PMCPMC7618120
OpenAlexW3154631325

What OpenQuestion holds

Textmetadata
LicenceCC BY
Read underepoch 390

Registered trials

None linked

Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.