Evidence map›Paper›PMID 30418615›Full record

Observational studyNephrology, dialysis, transplantation : official publication of the European Dialysis and Transplant Association - European Renal Association2020

Reduced oxygenation but not fibrosis defined by functional magnetic resonance imaging predicts the long-term progression of chronic kidney disease.

Kei Sugiyama, Tsutomu Inoue, Eito Kozawa, Masahiro Ishikawa, Akira Shimada, Naoki Kobayashi, Junji Tanaka, Hirokazu Okada

Registry-linked trialAbstract readObservational Study
PubMed Publisher
In one paragraph

Observational study in Nephrology, dialysis, transplantation : official publication of the European Dialysis and Transplant Association - European Renal Association, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. It is linked to trial NCT06210555 (Multiparametric MRI in a Prospective Cohort of Living Kidney Donors, Recipients, and Healthy Controls), which is not on this map. Cited by 35 papers.

0numbers the graph read from it
0cells of the map it votes in
35citing papers in PubMed
3.4field-weighted citation impact, top 7% 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.

NCT06210555 recruitingnot on this mapstarted 2024, after this paper: background citation

Multiparametric MRI in a Prospective Cohort of Living Kidney Donors, Recipients, and Healthy Controls: Correlations With Markers of Renal Function, Fibrosis and Ageing

TypeobservationalSponsorPatrick SchjelderupRan2024 to 2029Enrolled96ConditionsKidney Transplantation, Multiparametric Magnetic Resonance Imaging, Living Donors, Renal FibrosisArmsRenal transplantation, Living kidney donation
3 · Its place in the literature

Who cites it

35 citing papers in PubMed, 54 citations in OpenAlex.

  1. Trial
  2. Article
  3. First Experience with [Diagnostics (Basel, Switzerland) · 2026
    Article
  4. Article
  5. Review
  6. Article
  7. Review
  8. Article
  9. Review
  10. Article
  11. Article
  12. Review
  13. Article
  14. Review
  15. Article
  16. Article
  17. Article
  18. Article
  19. Review
  20. Hypoxia-Inducible Factors and Diabetic Kidney Disease-How Deep Can We Go?International journal of molecular sciences · 2022
    Review
4 · The record

Corrections and comments

5 · Who and what money

Authors and funding

8 authors at 1 institution in 1 country.

Kei SugiyamaDepartment of Nephrology, Faculty of Medicine, Saitama Medical University, Saitama, Japan.
Tsutomu InoueDepartment of Nephrology, Faculty of Medicine, Saitama Medical University, Saitama, Japan.
Eito KozawaDepartment of Radiology, Faculty of Medicine, Saitama Medical University, Saitama, Japan.
Masahiro IshikawaSchool of Clinical Engineering, Faculty of Health and Medical Care, Saitama Medical University, Saitama, Japan.
Akira ShimadaDepartment of Endocrinology and Diabetes, Faculty of Medicine, Saitama Medical University, Saitama, Japan.
Naoki KobayashiSchool of Clinical Engineering, Faculty of Health and Medical Care, Saitama Medical University, Saitama, Japan.
Junji TanakaDepartment of Radiology, Faculty of Medicine, Saitama Medical University, Saitama, Japan.
Hirokazu OkadaDepartment of Nephrology, Faculty of Medicine, Saitama Medical University, Saitama, Japan.
Saitama Medical University · JP

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundAlthough chronic hypoxia and fibrosis may be a key to the progression of chronic kidney disease (CKD), a noninvasive means of measuring these variables is not yet available. Here, using blood oxygen level-dependent (BOLD) and diffusion-weighted (DW) magnetic resonance imaging (MRI), we assessed changes in renal tissue oxygenation and fibrosis, respectively, and evaluated their correlation with prognosis for renal function.

methodsThe study was conducted under a single-center, longitudinal, retrospective observational design. We examined the prognostic significance of T2* values of BOLD-MRI and apparent diffusion coefficient (ADC) values on DW-MRI and other clinical parameters. The rate of decline in estimated glomerular filtration rate (eGFR) was calculated by linear regression analysis using changes in eGFR during the observation period.

resultsA total of 91 patients were enrolled, with a mean age of 55.8 ± 15.6 years. Among patients, 51 (56.0%) were males and 38 (41.8%) had diabetes mellitus. The mean eGFR was 49.2 ± 28.9 mL/min/1.73 m2 and the mean observation period was 5.13 years. ADC values of DW-MRI but not T2* values of BOLD-MRI were well correlated with eGFR at the initial time point. The mean annual rate of decline in eGFR during the 5-year observation period was -1.92 ± 3.00 mL/min/1.73 m2. On multiple linear regression analysis, the rate of decline in eGFR was significantly correlated with eGFR at the start point, period average amount of proteinuria and T2* values, but not with ADC values (t = 2.980, P = 0.004).

conclusionsReduced oxygenation as determined by low T2* values on BOLD-MRI is a clinically useful marker of CKD progression.

Indexed as

FibrosisHypoxiaMagnetic Resonance ImagingRenal Insufficiency, ChronicAlgorithmsDisease ProgressionFemaleGlomerular Filtration RateHumansLongitudinal StudiesMaleMiddle AgedRetrospective Studiesblood oxygen level–dependent magnetic resonance imagingdiffusion-weighted magnetic resonance imagingfibrosisglomerular filtration ratehypoxia

Identifiers

PMID30418615
OpenAlexW2901741717

What OpenQuestion holds

Textmetadata
Read underepoch 390

Registered trials

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.