Evidence map›Paper›PMID 34193068›Full record

ArticleBMC neurology2021

Increased cerebrospinal fluid adenosine 5'-triphosphate in patients with amyotrophic lateral sclerosis.

Takamasa Nukui, Atsushi Matsui, Hideki Niimi, Tomoyuki Sugimoto, Tomohiro Hayashi, Nobuhiro Dougu, Hirofumi Konishi, Mamoru Yamamoto, Ryoko Anada, Noriyuki Matsuda and 2 more

Open access · goldAbstract read
In one paragraph

Article in BMC neurology, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 4 papers.

0numbers the graph read from it
0cells of the map it votes in
4citing papers in PubMed
0.9field-weighted citation impact, top 24% 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

4 citing papers in PubMed, 10 citations in OpenAlex.

  1. Review
  2. Review
  3. Article
  4. Review
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

12 authors at 2 institutions in 1 country.

Takamasa NukuiDepartment of Neurology, Faculty of Medicine, University of Toyama, 2630 Sugitani, Toyama, 930-0194, Japan.
Atsushi MatsuiDepartment of Clinical Laboratory and Molecular Pathology, Graduate School of Medicine and Pharmaceutical Science for Research, University of Toyama, 2630 Sugitani, Toyama, 930-0194, Japan.
Hideki NiimiDepartment of Clinical Laboratory and Molecular Pathology, Graduate School of Medicine and Pharmaceutical Science for Research, University of Toyama, 2630 Sugitani, Toyama, 930-0194, Japan.
Tomoyuki SugimotoFaculty of Data Science, Graduate School of Data Science, University of Shiga, 1-1-1 Banba Hikone, Shiga, 522-8522, Japan.
Tomohiro HayashiDepartment of Neurology, Faculty of Medicine, University of Toyama, 2630 Sugitani, Toyama, 930-0194, Japan.
Nobuhiro DouguDepartment of Neurology, Faculty of Medicine, University of Toyama, 2630 Sugitani, Toyama, 930-0194, Japan.
Hirofumi KonishiDepartment of Neurology, Faculty of Medicine, University of Toyama, 2630 Sugitani, Toyama, 930-0194, Japan.
Mamoru YamamotoDepartment of Neurology, Faculty of Medicine, University of Toyama, 2630 Sugitani, Toyama, 930-0194, Japan.
Ryoko AnadaDepartment of Neurology, Faculty of Medicine, University of Toyama, 2630 Sugitani, Toyama, 930-0194, Japan.
Noriyuki MatsudaDepartment of Neurology, Faculty of Medicine, University of Toyama, 2630 Sugitani, Toyama, 930-0194, Japan.
Isao KitajimaDepartment of Clinical Laboratory and Molecular Pathology, Graduate School of Medicine and Pharmaceutical Science for Research, University of Toyama, 2630 Sugitani, Toyama, 930-0194, Japan.
Yuji NakatsujiDepartment of Neurology, Faculty of Medicine, University of Toyama, 2630 Sugitani, Toyama, 930-0194, Japan. nakatsuj@med.u-toyama.ac.jp.
University of Toyama · JPShiga University · JP

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundExtracellular adenosine 5'-triphosphate (ATP) has been suggested to cause neuroinflammation and motor neuron degeneration by activating microglia and astrocytes in amyotrophic lateral sclerosis (ALS). Since we have developed a highly sensitive ATP assay system, we examined cerebrospinal fluid (CSF) ATP levels in patients with ALS whether it can be a useful biomarker in ALS.

methodsForty-eight CSF samples from 44 patients with ALS were assayed for ATP with a newly established, highly sensitive assay system using luciferase luminous reaction. CSF samples from patients with idiopathic normal pressure hydrocephalus (iNPH) were assayed as a control. Patients were divided into two groups depending on their disease severity, as evaluated using the Medical Research Council (MRC) sum score. Correlations between the CSF ATP levels and other factors, including clinical data and serum creatinine levels, were evaluated.

resultsCSF ATP levels were significantly higher in patients with ALS than in the iNPH (716 ± 411 vs. 3635 ± 5465 pmol/L, p < 0.01). CSF ATP levels were significantly higher in the more severe group than in the iNPH group (6860 ± 8312 vs. 716 ± 411 pmol/L, p < 0.05) and mild group (6860 ± 8312 vs. 2676 ± 3959 pmol/L, p < 0.05) respectively. ALS functional rating scale-revised (ALSFRS-R) (37.9 ± 5.7 vs. 42.4 ± 2.8, p < 0.01) and serum creatinine levels (0.51 ± 0.13 vs. 0.68 ± 0.23 mg/dL, p < 0.05) were significantly lower in the severe group than in the mild group respectively. A negative correlation of CSF ATP levels with MRC sum score was demonstrated in the correlation analysis adjusted for age and sex (r = -0.3, p = 0.08).

conclusionsExtracellular ATP is particularly increased in the CSF of patients with advanced ALS. CSF ATP levels may be a useful biomarker for evaluating disease severity in patients with ALS.

Indexed as

Amyotrophic Lateral SclerosisAdenosine TriphosphateAgedBiomarkersCreatinineFemaleHumansMaleMiddle AgedAdenosine TriphosphateBiomarkersCreatinineALSATPBiomarkerCerebrospinal fluid

Identifiers

PMID34193068
PMCPMC8243489
OpenAlexW3111132503

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.