Evidence map›Paper›PMID 20503263›Full record

ArticleDiabetes/metabolism research and reviews2010

Diet-induced obesity in Sprague-Dawley rats causes microvascular and neural dysfunction.

Eric P Davidson, Lawrence J Coppey, Nigel A Calcutt, Christine L Oltman, Mark A Yorek

Open access · greenAbstract read
In one paragraph

Article in Diabetes/metabolism research and reviews, 2010. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 55 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
55citing papers in PubMed, 1 pooled it
5.0field-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

55 citing papers in PubMed, 1 synthesis or guideline pooled it, 86 citations in OpenAlex.

  1. Pooled it
  2. Review
  3. Article
  4. Review
  5. Article
  6. Diabetic neuropathy: cutting-edge research and future directions.Signal transduction and targeted therapy · 2025
    Review
  7. Review
  8. The conundrum of diabetic neuropathies-Past, present, and future.Journal of diabetes and its complications · 2022
    Review
  9. Article
  10. Review
  11. Article
  12. Article
  13. Review
  14. Article
  15. Article
  16. Early sensory neurophysiological changes in prediabetes.Journal of diabetes investigation · 2020
    Article
  17. Article
  18. Article
  19. Review
  20. Article
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 2 institutions in 1 country.

Eric P DavidsonVeteran Affairs Medical Center, University of Iowa, Iowa City, IA 52246, USA.
Lawrence J Coppey
Nigel A Calcutt
Christine L Oltman
Mark A Yorek
University of Iowa · USUniversity of California, San Diego · US

Funding

Mechanisms of Spinally-Mediated Hyperalgesia in DiabetesR01DK057629 · NIDDK · UNIVERSITY OF CALIFORNIA, SAN DIEGO · PI CALCUTT, NIGEL A. · 2003 to 2011
$2.4M
Prevention of Diabetic Neuropathy with ACE InhibitorsR01DK073990 · NIDDK · UNIVERSITY OF IOWA · PI YOREK, MARK A. · 2008 to 2012
$1.3M
Prevention of Diabetic Neuropathy with ACE InhibitorsR56DK073990 · NIDDK · UNIVERSITY OF IOWA · PI YOREK, MARK ANTHONY · 2006 to 2007
$497k
NIDDK NIH HHS DK057629NIDDK NIH HHS DK073990NIDDK NIH HHS R01 DK057629NIDDK NIH HHS R01 DK073990NIDDK NIH HHS R56 DK073990
6 · The paper itself

Abstract

backgroundThe objective of this study was to determine the effect of diet-induced obesity (DIO) on microvascular and neural function.

methodsRats were fed a standard or high fat diet for up to 32 weeks. The following measurements were carried out: vasodilation in epineurial arterioles using videomicroscopy, endoneurial blood flow using hydrogen clearance, nerve conduction velocity using electrical stimulation, size-frequency distribution of myelinated fibres of the sciatic nerve, intraepidermal nerve fibre density using confocal microscopy and thermal nociception using the Hargreaves method.

resultsRats fed a high fat diet for 32 weeks developed sensory neuropathy, as indicated by slowing of sensory nerve conduction velocity and thermal hypoalgesia. Motor nerve conduction velocity and endoneurial blood flow were not impaired. Mean axonal diameter of myelinated fibres of the sciatic nerve was unchanged in high fat-fed rats compared with that in control. Intraepidermal nerve fibre density was significantly reduced in high fat-fed rats. Vascular relaxation to acetylcholine and calcitonin gene-related peptide was decreased and expression of neutral endopeptidase (NEP) increased in epineurial arterioles of rats fed a high fat diet. In contrast, insulin-mediated vascular relaxation was increased in epineurial arterioles. NEP activity was significantly increased in the skin of the hindpaw. Markers of oxidative stress were increased in the aorta and serum of high fat-fed rats but not in epineurial arterioles.

conclusionChronic obesity causes microvascular and neural dysfunction. This is associated with increased expression of NEP but not oxidative stress in epineurial arterioles. NEP degrades vasoactive peptides, which may explain the decrease in microvascular function.

Indexed as

AnimalsArteriolesBlood GlucoseBlotting, WesternImmunohistochemistryNervous System DiseasesObesityRatsRats, Sprague-DawleyBlood Glucose

Identifiers

PMID20503263
PMCPMC2878284
OpenAlexW2002670155

What OpenQuestion holds

Textmetadata
LicenceTDM
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.