Evidence map›Paper›PMID 12154194›Full record

ArticleThe Journal of physiology2002

Exercise-induced increase in interstitial bradykinin and adenosine concentrations in skeletal muscle and peritendinous tissue in humans.

H Langberg, C Bjørn, R Boushel, Y Hellsten, M Kjaer

Open access · greenAbstract read
In one paragraph

Article in The Journal of physiology, 2002. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 32 papers.

0numbers the graph read from it
0cells of the map it votes in
32citing papers in PubMed
14.5field-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

32 citing papers in PubMed, 113 citations in OpenAlex.

  1. Trial
  2. Trial
  3. Article
  4. Tendinopathy: The Interplay between Mechanical Stress, Inflammation, and Vascularity.Advanced science (Weinheim, Baden-Wurttemberg, Germany) · 2025
    Review
  5. Review
  6. KAmerican journal of physiology. Regulatory, integrative and comparative physiology · 2022
    Article
  7. Article
  8. Effects of bradykinin on voltage-gated KThe Journal of physiology · 2021
    Article
  9. KJournal of neurophysiology · 2021
    Article
  10. Article
  11. Marker Expression of Interstitial Cells in Human Skeletal Muscle: An Immunohistochemical Study.The journal of histochemistry and cytochemistry : official journal of the Histochemistry Society · 2019
    Article
  12. Article
  13. Article
  14. Article
  15. Article
  16. Review
  17. Article
  18. Transient receptor potentials (TRPs) and anaphylaxis.Current allergy and asthma reports · 2013
    Review
  19. Article
  20. 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

5 authors at 3 institutions in 2 countries.

H LangbergSports Medicine Research Unit, Copenhagen Muscle Research Centre, Bispebjerg Hospital, DK-2400 Copenhagen NV, Denmark. hl02@bbh.hosp.dk
C Bjørn
R Boushel
Y Hellsten
M Kjaer
Bispebjerg Hospital · DKUniversity of Copenhagen · DKConcordia University · CA

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Bradykinin is known to cause vasodilatation in resistance vessels and may, together with adenosine, be an important regulator of tissue blood flow during exercise. Whether tissue concentrations of bradykinin change with exercise in skeletal muscle and tendon-related connective tissue has not yet been established. Microdialysis (molecular mass cut-off 5 kDa) was performed simultaneously in calf muscle and peritendinous Achilles tissue at rest and during 10 min periods of incremental (0.75 W, 2 W, 3.5 W and 4.75 W) dynamic plantar flexion exercise in 10 healthy individuals (mean age 27 years, range 22-33 years). Interstitial bradykinin and adenosine concentrations were determined using an internal reference to determine relative recovery ([2,3,prolyl-3,4-(3)H(N)]-bradykinin and [2-(3)H]-adenosine). Bradykinin and adenosine recovery were closely related and in the range of 30-50 %. The interstitial concentration of bradykinin rose in response to exercise both in skeletal muscle (from 23.1 +/- 4.9 nmol l(-1) to 110.5 +/- 37.9 nmol l(-1); P < 0.05) and in the peritendinous tissue (from 27.7 +/- 7.8 nmol l(-1) to 105.0 +/- 37.9 nmol l(-1); P < 0.05). In parallel, the adenosine concentration increased both in muscle (from 0.48 +/- 0.07 micromol l(-1) to 1.59 +/- 0.35 micromol l(-1); P < 0.05) and around the tendon (from 0.33 +/- 0.03 micromol l(-1) to 0.86 +/- 0.16 micromol l(-1); P < 0.05). In conclusion, the data show that muscular activity increases the interstitial concentrations of bradykinin and adenosine in both skeletal muscle and the connective tissue around its adjacent tendon. These findings support a role for bradykinin and adenosine in exercise-induced hyperaemia in skeletal muscle and suggest that bradykinin and adenosine are potential regulators of blood flow in peritendinous tissue.

Indexed as

Achilles TendonAdenosineAdultBradykininConnective TissueExerciseExtracellular SpaceFemaleHumansMaleMuscle, SkeletalOsmolar ConcentrationAdenosineBradykinin

Identifiers

PMID12154194
PMCPMC2290462
OpenAlexW2062353585

What OpenQuestion holds

Textmetadata
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.