Evidence map›Paper›PMID 22591575›Full record

ArticleMicrocirculation (New York, N.Y. : 1994)2012

Laser speckle flowmetry method for measuring spatial and temporal hemodynamic alterations throughout large microvascular networks.

Joshua K Meisner, Suna Sumer, Kelsey P Murrell, Timothy J Higgins, Richard J Price

Abstract read
In one paragraph

Article in Microcirculation (New York, N.Y. : 1994), 2012. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 10 papers.

0numbers the graph read from it
0cells of the map it votes in
10citing papers in PubMed
1.7field-weighted citation impact, top 16% 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

10 citing papers in PubMed, 25 citations in OpenAlex.

  1. Review
  2. Article
  3. Article
  4. Strain-Dependent Variation in Acute Ischemic Muscle Injury.The American journal of pathology · 2018
    Article
  5. MicroRNA-146a Regulates Perfusion Recovery in Response to Arterial OcclusionFrontiers in bioengineering and biotechnology · 2018
    Article
  6. Article
  7. Article
  8. Article
  9. Article
  10. 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.

Joshua K MeisnerUniversity of Virginia, Department of Biomedical Engineering, Box 800759, Health System, Charlottesville, Virginia 22903, USA.
Suna Sumer
Kelsey P Murrell
Timothy J Higgins
Richard J Price
University of Virginia · USUniversity of Virginia Health System · US

Funding

BASIC CARDIOVASCULAR RESEARCH TRAINING GRANTT32HL007284 · NHLBI · UNIVERSITY OF VIRGINIA CHARLOTTESVILLE · PI Brant E Isakson, Gary K Owens · 1985 to 2026
$19.6M
MEDICAL SCIENTIST TRAINING PROGRAMT32GM007267 · NIGMS · UNIVERSITY OF VIRGINIA CHARLOTTESVILLE · PI GARCIA-BLANCO, MARIANO A. · 1985 to 2024
$13.4M
Arteriogenesis by Ultrasonic Microbubble DestructionR01HL074082 · NHLBI · UNIVERSITY OF VIRGINIA · PI PRICE, RICHARD J. · 2006 to 2010
$1.7M
Molecular Transducers Linking Shear Stress to Capillary Sprouting and StabilityR21HL098632 · NHLBI · UNIVERSITY OF VIRGINIA · PI PRICE, RICHARD J. · 2010 to 2011
$424k
NHLBI NIH HHS R01 HL074082NHLBI NIH HHS R21 HL098632NHLBI NIH HHS T32 HL007284NHLBI NIH HHS T32-HL007284
6 · The paper itself

Abstract

objectives1) To develop and validate laser speckle flowmetry (LSF) as a quantitative tool for individual microvessel hemodynamics in large networks. 2) To use LSF to determine if structural differences in the dorsal skinfold microcirculation (DSFWC) of C57BL/6 and BALB/c mice impart differential network hemodynamic responses to occlusion.

methodsWe compared LSF velocity measurements with known/measured velocities in vitro using capillary tube tissue phantoms and in vivo using mouse DSFWCs and cremaster muscles. Hemodynamic changes induced by feed arteriole occlusion were measured using LSF in DSFWCs implanted on C57BL/6 and BALB/c mice.

resultsIn vitro, we found that the normalized speckle intensity (NSI) versus velocity linear relationship (R(2) ≥ 0.97) did not vary with diameter or hematocrit and can be shifted to meet an expected operating range. In vivo, DSFWC and cremaster muscle preparations (R(2) = 0.92 and 0.95, respectively) demonstrated similar linear relationships between NSI and centerline velocity. Stratification of arterioles into predicted collateral pathways revealed significant differences between C57BL/6 and BALB/c strains in response to feed arteriole occlusion.

conclusionsThese data demonstrate the applicability of LSF to intravital microscopy microcirculation preparations for determining both relative and absolute hemodynamics on a network-wide scale while maintaining the resolution of individual microvessels.

Indexed as

AnimalsArteriolesBlood Flow VelocityLaser-Doppler FlowmetryMaleMiceMice, Inbred BALB CMicrocirculationMuscle, Skeletal

Identifiers

PMID22591575
PMCPMC3434303
OpenAlexW2098636144

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.