Evidence map›Paper›PMID 35819943›Full record

ArticlePloS one2022

Different phylotypes of Cutibacterium acnes cause different modic changes in intervertebral disc degeneration.

Weibin Lan, Xiaomeng Wang, Xuezhao Tu, Xiunian Hu, Haichuan Lu

Open access · goldAbstract read
In one paragraph

Article in PloS one, 2022. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 13 papers.

0numbers the graph read from it
0cells of the map it votes in
13citing papers in PubMed
4.1field-weighted citation impact, top 5% 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

13 citing papers in PubMed, 21 citations in OpenAlex.

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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

5 authors at 1 institution in 1 country.

Weibin LanDepartment of Spinal Surgery, Affiliated Longyan First Hospital of Fujian Medical University, Longyan City, Fujian Province, China.
Xiaomeng WangDepartment of Spinal Surgery, Affiliated Longyan First Hospital of Fujian Medical University, Longyan City, Fujian Province, China.
Xuezhao TuDepartment of Spinal Surgery, Affiliated Longyan First Hospital of Fujian Medical University, Longyan City, Fujian Province, China.
Xiunian HuDepartment of Radiology, Affiliated Longyan First Hospital of Fujian Medical University, Longyan City, Fujian Province, China.
Haichuan LuDepartment of Spinal Surgery, Affiliated Longyan First Hospital of Fujian Medical University, Longyan City, Fujian Province, China.ORCID 0000-0002-4274-3107
Fujian Medical University · CN

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundThe contribution of Cutibacterium acnes (C. acnes) infection to intervertebral disc degeneration (IDD) and the antibiotic therapy has evoked several controversies in recent years. While some microbiology studies report bacterial disc infection within IDD patients, others attribute the positive results to contamination during prolonged cultures. In addition to the clinical controversy, little was known about the mechanism of C. acnes-caused Modic changes (MCs) if C. acnes was the pathogenic factor.

objectivesThis study aimed to investigate the inflammatory mechanism of MCs induced by different phylotypes of C. acnes in patients with IDD.

methodsSpecimens from sixty patients undergoing microdiscectomy for disc herniation were included, C. acnes were identified by anaerobic culture, followed by biochemical and PCR-based methods. The identified species of C. acnes were respectively inoculated into the intervertebral discs of rabbits. MRI and histological change were observed. Additionally, we detected MMP expression in the rabbit model using reverse transcription-quantitative polymerase chain reaction (RT-qPCR).

resultsOf the 60 cases, 18 (30%) specimens were positive for C. acnes, and we identified 4 of 6 defined phylogroups: IA, IB, II and III. The rabbits that received Type IB or II strains of C. acnes showed significantly decreased T1WI and higher T2WI at eighth weeks, while strain III C. acnes resulted in hypointense signals on both T1WI and T2WI. Histological examination results showed that all of the three types of C. acnes could cause disc degeneration and endplates rupture. Moreover, endplate degeneration induced by type IB or II strains of C. acnes is related with MMP13 expression. Meanwhile, strain III C. acnes might upregulated the level of MMP3.

conclusionThis study suggested that C. acnes is widespread in herniated disc tissues. Different types of C. acnes could induce different MCs by increasing MMP expression.

Indexed as

Gram-Positive Bacterial InfectionsIntervertebral DiscIntervertebral Disc DegenerationIntervertebral Disc DisplacementAnimalsPropionibacterium acnesRabbits

Identifiers

PMID35819943
PMCPMC9275720
OpenAlexW4285079069

What OpenQuestion holds

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LicenceCC BY
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Registered trials

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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.