Evidence map›Paper›PMID 35321171›Full record

Trial reportWorld journal of clinical cases2022

Previously unexplored etiology for femoral head necrosis: Metagenomics detects no pathogens in necrotic femoral head tissue.

Chao Liu, Wei Li, Chao Zhang, Feng Pang, Da-Wei Wang

Abstract readClinical Trial
In one paragraph

Trial report in World journal of clinical cases, 2022. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 1 paper.

0numbers the graph read from it
0cells of the map it votes in
1citing papers in PubMed
–field-weighted citation impact
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

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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

1 citing paper in PubMed.

  1. Article
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

5 authors.

Chao LiuDepartment of Orthopedics, Liaocheng People's Hospital, Liaocheng 252000, Shandong Province, China.
Wei LiDepartment of Orthopedics, Liaocheng People's Hospital, Liaocheng 252000, Shandong Province, China.
Chao ZhangDepartment of Orthopedics, Shandong The First Medical University, Taian 271016, Shandong Province, China.
Feng PangDepartment of Clinical Laboratory, Liaocheng People's Hospital, Liaocheng 252000, Shandong Province, China.
Da-Wei WangDepartment of Orthopedics, Liaocheng People's Hospital, Liaocheng 252000, Shandong Province, China. wangdaweisci@126.com.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundOsteonecrosis of the femoral head (ONFH) is a frequent and refractory disease whose pathogenesis has not yet been elucidated. Infection and other factors that reduce the local blood supply can lead to bone necrosis.

aimTo aim of this study was to assess the relationship of ONFH with bone infection by use of metagenomic sequencing.

methodsTwelve patients with idiopathic ONFH and 12 comparable controls who were undergoing hip arthroplasty were followed up in parallel. Necrotic femoral head specimens were collected for bacterial and fungal cultures using standard methods. Bone specimens were subjected to preliminary processing, and metagenomics sequencing of microorganisms was performed. A one-way analysis of variance was used to compare bacterial species in the two groups.

resultsBacterial and fungal cultures exhibited no evidence of microbial growth in all isolated necrotic femoral head tissues. We thus performed metagenomic sequencing and classified the species as suspected pathogens or suspected background microorganisms based on known bacterial pathogenicity. There was no evidence of viruses, fungi, parasites, M. tuberculosis complex, or mycoplasma/chlamydia. There were also no significant differences in suspected pathogens or suspected background microorganisms (

conclusionAlthough we found no pathogens specific for ONFH in necrotic femoral head tissue, our research provides a foundation for future research on the metagenomics of bone pathogens.

Indexed as

IdiopathicOsteonecrosis of the femoral headPathogensSequencing

Identifiers

PMID35321171
PMCPMC8895187

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