Evidence map›Paper›PMID 31634866›Full record

ArticleEndocrine connections2019

DNA methylation analysis of negative pressure therapy effect in diabetic foot ulcers.

A H Ludwig-Slomczynska, S Borys, M T Seweryn, J Hohendorff, P Kapusta, B Kiec-Wilk, E Pitera, P P Wolkow, M T Malecki

Open access · goldAbstract read
In one paragraph

Article in Endocrine connections, 2019. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 10 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
10citing papers in PubMed, 1 pooled it
1.2field-weighted citation impact, top 20% 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

10 citing papers in PubMed, 1 synthesis or guideline pooled it, 15 citations in OpenAlex.

  1. Pooled it
  2. Trial
  3. Review
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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

9 authors at 1 institution in 1 country.

A H Ludwig-SlomczynskaCenter for Medical Genomics OMICRON, Jagiellonian University Medical College, Krakow, Poland.
S BorysDepartment of Metabolic Diseases, Jagiellonian University Medical College, Krakow, Poland.
M T SewerynCenter for Medical Genomics OMICRON, Jagiellonian University Medical College, Krakow, Poland.
J HohendorffDepartment of Metabolic Diseases, Jagiellonian University Medical College, Krakow, Poland.
P KapustaCenter for Medical Genomics OMICRON, Jagiellonian University Medical College, Krakow, Poland.
B Kiec-WilkDepartment of Metabolic Diseases, Jagiellonian University Medical College, Krakow, Poland.
E PiteraCenter for Medical Genomics OMICRON, Jagiellonian University Medical College, Krakow, Poland.
P P WolkowCenter for Medical Genomics OMICRON, Jagiellonian University Medical College, Krakow, Poland.
M T MaleckiDepartment of Metabolic Diseases, Jagiellonian University Medical College, Krakow, Poland.
Jagiellonian University · PL

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

objectiveNegative pressure wound therapy (NPWT) has been used to treat diabetic foot ulcerations (DFUs). Its action on the molecular level, however, is only partially understood. Some earlier data suggested NPWT may be mediated through modification of local gene expression. As methylation is a key epigenetic regulatory mechanism of gene expression, we assessed the effect of NPWT on its profile in patients with type 2 diabetes (T2DM) and neuropathic non-infected DFUs.

methodsOf 36 included patients, 23 were assigned to NPWT and 13 to standard therapy. Due to ethical concerns, the assignment was non-randomized and based on wound characteristics. Tissue samples were obtained before and 8 ± 1 days after therapy initiation. DNA methylation patterns were checked by Illumina Methylation EPIC kit.

resultsIn terms of clinical characteristics, the groups presented typical features of T2DM; however, the NPWT group had significantly greater wound area: 16.8 cm2 vs 1.4 cm2 (P = 0.0003). Initially only one region at chromosome 5 was differentially methylated. After treatment, 57 differentially methylated genes were found, mainly located on chromosomes 6 (chr6p21) and 20 (chr20p13); they were associated with DNA repair and autocrine signaling via retinoic acid receptor. We performed differential analyses pre treatment and post treatment. The analysis revealed 426 differentially methylated regions in the NPWT group, but none in the control group. The enrichment analysis showed 11 processes significantly associated with NPWT, of which 4 were linked with complement system activation. All but one were hypermethylated after NPWT.

conclusionThe NPWT effect on DFUs may be mediated through epigenetic changes resulting in the inhibition of complement system activation.

Indexed as

diabetic foot syndromediabetic foot ulcerationDNA methylationnegative-pressure wound therapytype 2 diabetes

Identifiers

PMID31634866
PMCPMC6865364
OpenAlexW2982062874

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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.