Evidence map›Paper›PMID 22227202›Full record

Trial reportExperimental physiology2012

Temperature-dependent release of ATP from human erythrocytes: mechanism for the control of local tissue perfusion.

Kameljit K Kalsi, José González-Alonso

Abstract readClinical Trial
In one paragraph

Trial report in Experimental physiology, 2012. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 39 papers.

0numbers the graph read from it
0cells of the map it votes in
39citing papers in PubMed
–field-weighted citation impact
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

39 citing papers in PubMed.

  1. Trial
  2. Trial
  3. Article
  4. Erythrocytes as Active Regulators of Blood Flow: A Brief Overview.Advances in experimental medicine and biology · 2026
    Review
  5. Article
  6. Review
  7. Cyclooxygenase inhibition does not blunt thermal hyperemia in skeletal muscle of humans.Journal of applied physiology (Bethesda, Md. : 1985) · 2024
    Article
  8. Review
  9. Article
  10. Article
  11. Review
  12. Article
  13. Review
  14. Article
  15. Article
  16. Ventilatory and cerebrovascular regulation and integration at high-altitude.Clinical autonomic research : official journal of the Clinical Autonomic Research Society · 2018
    Review
  17. Review
  18. Article
  19. Temperature and blood flow distribution in the human leg during passive heat stress.Journal of applied physiology (Bethesda, Md. : 1985) · 2016
    Article
  20. Hypoxemia, oxygen content, and the regulation of cerebral blood flow.American journal of physiology. Regulatory, integrative and comparative physiology · 2016
    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

2 authors.

Kameljit K KalsiCentre for Sports Medicine and Human Performance, Brunel University, Uxbridge, Middlesex UB8 3PH, UK. kameljit.kalsi@brunel.ac.uk
José González-Alonso

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Human limb muscle and skin blood flow increases significantly with elevations in temperature, possibly through physiological processes that involve temperature-sensitive regulatory mechanisms. Here we tested the hypothesis that the release of the vasodilator ATP from human erythrocytes is sensitive to physiological increases in temperature both in vitro and in vivo, and examined potential channel/transporters involved. To investigate the source of ATP release, whole blood, red blood cells (RBCs), plasma and serum were heated in vitro to 33, 36, 39 and 42°C. In vitro heating augmented plasma or 'bathing solution' ATP in whole blood and RBC samples, but not in either isolated plasma or serum samples. Heat-induced ATP release was blocked by niflumic acid and glibenclamide, but was not affected by inhibitors of nucleoside transport or anion exchange. Heating blood to 42°C enhanced (P < 0.05) membrane protein abundance of cystic fibrosis transmembrane conductance regulator (CFTR) in RBCs. In a parallel in vivo study in humans exposed to whole-body heating at rest and during exercise, increases in muscle temperature from 35 to 40°C correlated strongly with elevations in arterial plasma ATP (r(2) = 0.91; P = 0.0001), but not with femoral venous plasma ATP (r(2) = 0.61; P = 0.14). In vitro, however, the increase in ATP release from RBCs was similar in arterial and venous samples heated to 39°C. Our findings demonstrate that erythrocyte ATP release is sensitive to physiological increases in temperature, possibly via activation of CFTR-like channels, and suggest that temperature-dependent release of ATP from erythrocytes might be an important mechanism regulating human limb muscle and skin perfusion in conditions that alter blood and tissue temperature.

Indexed as

TemperatureAdenosine TriphosphateAdultCystic Fibrosis Transmembrane Conductance RegulatorErythrocyte MembraneErythrocytesExerciseHot TemperatureHumansIn Vitro TechniquesMaleMiddle AgedMuscle, SkeletalRegional Blood FlowRestSkinAdenosine TriphosphateCystic Fibrosis Transmembrane Conductance Regulator

Identifiers

PMID22227202
PMCPMC3380561

What OpenQuestion holds

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LicenceCC BY
Read underepoch 390

Registered trials

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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.