Evidence map›Paper›PMID 26046358›Full record

ArticlePloS one2015

MicroRNA Stability in Postmortem FFPE Tissues: Quantitative Analysis Using Autoptic Samples from Acute Myocardial Infarction Patients.

Yu Kakimoto, Hiroshi Kamiguchi, Eriko Ochiai, Fumiko Satoh, Motoki Osawa

Open access · goldAbstract read
In one paragraph

Article in PloS one, 2015. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 34 papers, 4 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
34citing papers in PubMed, 4 pooled it
2.3field-weighted citation impact, top 12% 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

34 citing papers in PubMed, 4 syntheses or guidelines pooled it, 64 citations in OpenAlex.

  1. Pooled it
  2. Pooled it
  3. Pooled it
  4. Pooled it
  5. Review
  6. Molecular composition of meats: a novel look at microRNAs as functional nutrients.Animal frontiers : the review magazine of animal agriculture · 2026
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  11. Epigenetic analyses in forensic medicine: future and challenges.International journal of legal medicine · 2024
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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.

Yu KakimotoDepartment of Forensic Medicine, Tokai University School of Medicine, Isehara, Kanagawa, Japan.
Hiroshi KamiguchiSupport Center for Medical Research and Education, Tokai University, Isehara, Kanagawa, Japan.
Eriko OchiaiDepartment of Forensic Medicine, Tokai University School of Medicine, Isehara, Kanagawa, Japan.
Fumiko SatohDepartment of Forensic Medicine, Tokai University School of Medicine, Isehara, Kanagawa, Japan.
Motoki OsawaDepartment of Forensic Medicine, Tokai University School of Medicine, Isehara, Kanagawa, Japan.
Tokai University · JP

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

MicroRNAs (miRNAs) are very short (18-24 nucleotides) nucleic acids that are expressed in a number of biological tissues and have been shown to be more resistant to extreme temperatures and pH compared to longer RNA molecules, like mRNAs. As miRNAs contribute to diverse biological process and respond to various kinds of cellular stress, their utility as diagnostic biomarkers and/or therapeutic targets has recently been explored. Here, we have evaluated the usefulness of miRNA quantification during postmortem examination of cardiac tissue from acute myocardial infarction (AMI) patients. Cardiac tissue was collected within one week of the patient's death and either frozen (19 samples) or fixed in formalin for up to three years (36 samples). RNA integrity was evaluated with an electropherogram, and it appears that longer RNAs are fragmented after death in the long-term fixed samples. Quantitative PCR was also performed for seven miRNAs and three other small RNAs in order to determine the appropriate controls for our postmortem analysis. Our data indicate that miR-191 and miR-26b are more suitable than the other types of small RNA molecules as they are stably detected after death and long-term fixation. Further, we also applied our quantitation method, using these endogenous controls, to evaluate the expression of three previously identified miRNA biomarkers, miR-1, miR-208b, and miR-499a, in formalin-fixed tissues from AMI patients. Although miR-1 and miR-208b decreased (1.4-fold) and increased (1.2-fold), respectively, in the AMI samples compared to the controls, the significance of these changes was limited by our sample size. In contrast, the relative level of miR-499a was significantly decreased in the AMI samples (2.1-fold). This study highlights the stability of miRNAs after death and long-term fixation, validating their use as reliable biomarkers for AMI during postmortem examination.

Indexed as

Postmortem ChangesRNA StabilityAdultAgedAutopsyFemaleFormaldehydeHumansMaleMicroRNAsMiddle AgedMyocardial InfarctionParaffin EmbeddingReal-Time Polymerase Chain ReactionRNA, Small NuclearTime FactorsFormaldehydeMicroRNAsMIRN1 microRNA, humanMIRN208 microRNA, humanMIRN499 microRNA, humanRNA, Small NuclearU6 small nuclear RNA

Identifiers

PMID26046358
PMCPMC4457786
OpenAlexW2239883203

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.