Evidence map›Paper›PMID 29514070›Full record

ArticleCell metabolism2018

The Pericyte of the Pancreatic Islet Regulates Capillary Diameter and Local Blood Flow.

Joana Almaça, Jonathan Weitz, Rayner Rodriguez-Diaz, Elizabeth Pereira, Alejandro Caicedo

Open access · greenAbstract read
In one paragraph

Article in Cell metabolism, 2018. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 128 papers, 2 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
128citing papers in PubMed, 2 pooled it
20.1field-weighted citation impact, top 1% 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

128 citing papers in PubMed, 2 syntheses or guidelines pooled it, 183 citations in OpenAlex.

  1. Pooled it
  2. Pooled it
  3. Review
  4. Article
  5. Review
  6. Review
  7. Review
  8. Review
  9. Review
  10. Article
  11. Mechanisms of Pericyte-Mediated Cancer Metastasis.Advanced science (Weinheim, Baden-Wurttemberg, Germany) · 2026
    Review
  12. Article
  13. Article
  14. Article
  15. Review
  16. Article
  17. Article
  18. Article
  19. Article
  20. Pancreatic Cancer and Diabetes: Insights, Hypotheses, and Next Steps.International journal of molecular sciences · 2025
    Review

68 more citing papers are in PubMed but not listed here.

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.

Joana AlmaçaDivision of Endocrinology, Diabetes, and Metabolism, Department of Medicine, University of Miami Miller School of Medicine, Miami, FL 33136, USA. Electronic address: jalmaca@med.miami.edu.
Jonathan WeitzDivision of Endocrinology, Diabetes, and Metabolism, Department of Medicine, University of Miami Miller School of Medicine, Miami, FL 33136, USA; Molecular Cell and Developmental Biology Program, Miller School of Medicine, University of Miami, Miami, FL 33136, USA.
Rayner Rodriguez-DiazDivision of Endocrinology, Diabetes, and Metabolism, Department of Medicine, University of Miami Miller School of Medicine, Miami, FL 33136, USA.
Elizabeth PereiraDivision of Endocrinology, Diabetes, and Metabolism, Department of Medicine, University of Miami Miller School of Medicine, Miami, FL 33136, USA; Department of Physiology and Biophysics, Miller School of Medicine, University of Miami, Miami, FL 33136, USA.
Alejandro CaicedoDivision of Endocrinology, Diabetes, and Metabolism, Department of Medicine, University of Miami Miller School of Medicine, Miami, FL 33136, USA; Department of Physiology and Biophysics, Miller School of Medicine, University of Miami, Miami, FL 33136, USA; Program in Neuroscience, Miller School of Medicine, University of Miami, Miami, FL 33136, USA. Electronic address: acaicedo@med.miami.edu.
University of Miami · US

Funding

The delta cell as a key regulator of pancreatic islet biologyR01DK124527 · NIDDK · UNIVERSITY OF MIAMI SCHOOL OF MEDICINE · PI RODRIGUEZ-DIAZ, RAYNER · 2020 to 2024
$1.9M
The Role of Innervation for Hormone Secretion in Human IsletsR01DK084321 · NIDDK · UNIVERSITY OF MIAMI SCHOOL OF MEDICINE · PI CAICEDO, ALEJANDRO · 2011 to 2015
$1.8M
Harnessing Innervation to Promote Pancreatic Islet FunctionR01DK113093 · NIDDK · UNIVERSITY OF MIAMI SCHOOL OF MEDICINE · PI CAICEDO, ALEJANDRO · 2017 to 2020
$1.5M
Cholinergic signaling in the human pancreatic isletR01DK111538 · NIDDK · UNIVERSITY OF MIAMI SCHOOL OF MEDICINE · PI CAICEDO, ALEJANDRO · 2016 to 2018
$1.2M
Role of pericytes in pancreatic islet fibrosisK01DK111757 · NIDDK · UNIVERSITY OF MIAMI SCHOOL OF MEDICINE · PI ALMACA, JOANA · 2017 to 2021
$694k
The role of the delta cell in islet homeostasisR21DK114418 · NIDDK · UNIVERSITY OF MIAMI SCHOOL OF MEDICINE · PI RODRIGUEZ-DIAZ, RAYNER · 2017 to 2019
$576k
Imaging mitochondrial signaling in B-cells ectopically implanted in the eyeR21ES025673 · NIEHS · UNIVERSITY OF MIAMI SCHOOL OF MEDICINE · PI CAICEDO, ALEJANDRO, MORAES, CARLOS TORRES · 2015 to 2017
$569k
The Role of Innervation for Hormone Secretion in Human IsletsR56DK084321 · NIDDK · UNIVERSITY OF MIAMI SCHOOL OF MEDICINE · PI CAICEDO, ALEJANDRO · 2009 to 2016
$306k
NIDDK NIH HHS K01 DK111757NIDDK NIH HHS R01 DK084321NIDDK NIH HHS R01 DK111538NIDDK NIH HHS R01 DK113093NIDDK NIH HHS R01 DK124527NIDDK NIH HHS R21 DK114418NIDDK NIH HHS R56 DK084321NIEHS NIH HHS R21 ES025673
6 · The paper itself

Abstract

Efficient insulin secretion requires a well-functioning pancreatic islet microvasculature. The dense network of islet capillaries includes the islet pericyte, a cell that has barely been studied. Here we show that islet pericytes help control local blood flow by adjusting islet capillary diameter. Islet pericytes cover 40% of the microvasculature, are contractile, and are innervated by sympathetic axons. Sympathetic adrenergic input increases pericyte activity and reduces capillary diameter and local blood flow. By contrast, activating beta cells by increasing glucose concentration inhibits pericytes, dilates islet capillaries, and increases local blood flow. These effects on pericytes are mediated by endogenous adenosine, which is likely derived from ATP co-released with insulin. Pericyte coverage of islet capillaries drops drastically in type 2 diabetes, suggesting that, under diabetic conditions, islets lose this mechanism to control their own blood supply. This may lead to inadequate insulin release into the circulation, further deteriorating glycemic control.

Indexed as

CapillariesPericytesAdenosineAdolescentAdultAnimalsDiabetes Mellitus, Type 2FemaleGlucoseHumansInsulinInsulin-Secreting CellsIslets of LangerhansMaleMiceMiddle AgedAdenosineGlucoseInsulinadenosineblood flowcapillary diameterdiabeteshyperemiainsulin secretionpancreatic isletpancreatic slicepericytessympathetic

Identifiers

PMID29514070
PMCPMC5876933
OpenAlexW2790518348

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.