Evidence map›Paper›PMID 23592503›Full record

ArticleClinical chemistry2013

Microfluidic assay of platelet deposition on collagen by perfusion of whole blood from healthy individuals taking aspirin.

Ruizhi Li, Susanne Fries, Xuanwen Li, Tilo Grosser, Scott L Diamond

Open access · bronzeAbstract readValidation Study
In one paragraph

Article in Clinical chemistry, 2013. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 20 papers.

0numbers the graph read from it
0cells of the map it votes in
20citing papers in PubMed
2.6field-weighted citation impact, top 9% 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

20 citing papers in PubMed, 38 citations in OpenAlex.

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  12. Systems Analysis of Thrombus Formation.Circulation research · 2016
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  17. Differential impairment of aspirin-dependent platelet cyclooxygenase acetylation by nonsteroidal antiinflammatory drugs.Proceedings of the National Academy of Sciences of the United States of America · 2014
    Article
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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.

Ruizhi LiInstitute for Medicine and Engineering, Department of Chemical and Biomolecular Engineering, University of Pennsylvania, Philadelphia, PA 19104, USA
Susanne Fries
Xuanwen Li
Tilo Grosser
Scott L Diamond
University of Pennsylvania · USTranslational Therapeutics (United States) · US

Funding

Institutional Clinical and Translational Science AwardUL1TR000003 · NCATS · UNIVERSITY OF PENNSYLVANIA · PI FITZGERALD, GARRET A · 2012 to 2015
$38.9M
Pilot Study: POPULATION PHARMACOLOGYU54HL117798 · NHLBI · UNIVERSITY OF PENNSYLVANIA · PI IYENGAR, SRINIVAS RAVI V, TROYANSKAYA, OLGA G · 2012 to 2016
$18.5M
Blood Systems BiologyR01HL103419 · NHLBI · UNIVERSITY OF PENNSYLVANIA · PI DIAMOND, SCOTT L · 2010 to 2019
$7.4M
NCATS NIH HHS UL1TR000003NHLBI NIH HHS R01 HL-103419NHLBI NIH HHS R01 HL103419NHLBI NIH HHS U54 HL117798
6 · The paper itself

Abstract

backgroundMicrofluidic devices can create hemodynamic conditions for platelet assays. We validated an 8-channel device in a study of interdonor response to acetylsalicylic acid (ASA, aspirin) with whole blood from 28 healthy individuals.

methodsPlatelet deposition was assessed before treatment or 24 h after ingestion of 325 mg ASA. Whole blood (plus 100 μmol/L H-d-Phe-Pro-Arg-chloromethylketone to inhibit thrombin) was further treated ex vivo with ASA (0-500 μmol/L) and perfused over fibrillar collagen for 300 s at a venous wall shear rate (200 s(-1)).

resultsEx vivo ASA addition to blood drawn before aspirin ingestion caused a reduction in platelet deposition [half-maximal inhibitory concentration (IC50) approximately 10-20 μmol/L], especially between 150 and 300 s of perfusion, when secondary aggregation mediated by thromboxane was expected. Twenty-seven of 28 individuals displayed smaller deposits (45% mean reduction; range 10%-90%; P < 0.001) from blood obtained 24 h after ASA ingestion (no ASA added ex vivo). In replicate tests, an R value to score secondary aggregation [deposition rate from 150 to 300 s normalized by rate from 60 to 150 s] showed R < 1 in only 2 of 28 individuals without ASA ingestion, with R > 1 in only 3 of 28 individuals after 500 μmol/L ASA addition ex vivo. At 24 h after ASA ingestion, 21 of 28 individuals displayed poor secondary aggregation (R < 1) without ex vivo ASA addition, whereas the 7 individuals with residual secondary aggregation (R > 1) displayed insensitivity to ex vivo ASA addition. Platelet deposition was not correlated with platelet count. Ex vivo ASA addition caused similar inhibition at venous and arterial wall shear rates.

conclusionsMicrofluidic devices quantified platelet deposition after ingestion or ex vivo addition of aspirin.

Indexed as

CollagenAdministration, OralAdolescentAdultAspirinBlood PlateletsCyclooxygenase 1FemaleFluorescent DyesHumansMaleMicrofluidic Analytical TechniquesMiddle AgedPlatelet AdhesivenessPlatelet AggregationPlatelet Aggregation InhibitorsAspirinCollagenCyclooxygenase 1Fluorescent DyesPlatelet Aggregation InhibitorsThromboxane A2

Identifiers

PMID23592503
PMCPMC4119612
OpenAlexW2120726327

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.