Evidence map›Paper›PMID 30720811›Full record

ArticleLab on a chip2019

Chemical-PDMS binding kinetics and implications for bioavailability in microfluidic devices.

Alexander W Auner, Kazi M Tasneem, Dmitry A Markov, Lisa J McCawley, M Shane Hutson

Abstract read
In one paragraph

Article in Lab on a chip, 2019. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 44 papers.

0numbers the graph read from it
0cells of the map it votes in
44citing papers in PubMed
4.3field-weighted citation impact, top 5% 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

44 citing papers in PubMed, 86 citations in OpenAlex.

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  12. Engineering in vitro vascular microsystems.Microsystems & nanoengineering · 2025
    Review
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  20. Breaking the mold: 3D cell cultures reshaping the future of cancer research.Frontiers in cell and developmental biology · 2024
    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 1 institution in 1 country.

Alexander W AunerDepartment of Physics and Astronomy, Vanderbilt University, Nashville, TN, USA. shane.hutson@vanderbilt.edu.
Kazi M Tasneem
Dmitry A Markov
Lisa J McCawley
M Shane Hutson
Vanderbilt University · US

Funding

Physical Dynamics of Cancer Response to Chemotherapy in 3D MicroenvironmentsU01CA202229 · NCI · VANDERBILT UNIVERSITY · PI MARKOV, DMITRY, MCCAWLEY, LISA JOY · 2015 to 2019
$3.0M
EPA R835736NCI NIH HHS U01 CA202229
6 · The paper itself

Abstract

Microfluidic organ-on-chip devices constructed from polydimethylsiloxane (PDMS) have proven useful in studying both beneficial and adverse effects of drugs, supplements, and potential toxicants. Despite multiple advantages, one clear drawback of PDMS-based devices is binding of hydrophobic chemicals to their exposed surfaces. Chemical binding to PDMS can change the timing and extent of chemical delivery to cells in such devices, potentially altering dose-response curves. Recent efforts have quantified PDMS binding for selected chemicals. Here, we test a wider set of nineteen chemicals using UV-vis or infrared spectroscopy to characterize loss of chemical from solution in two setups with different PDMS-surface-to-solution-volume ratios. We find discernible PDMS binding for eight chemicals and show that PDMS binding is strongest for chemicals with a high octanol-water partition coefficient (log P > 1.85) and low H-bond donor number. Further, by measuring depletion and return of chemical from solution over tens to hundreds of hours and fitting these results to a first order model of binding kinetics, we characterize partitioning into PDMS in terms of binding capacities per unit surface area and both forward and reverse rate constants. These fitted parameters were used to model the impact of PDMS binding on chemical transport and bioavailability under realistic flow conditions and device geometry. The models predict that PDMS binding could alter in-device cellular exposures for both continuous and bolus dosing schemes by up to an order of magnitude compared to nominal input doses.

Indexed as

Lab-On-A-Chip DevicesMicrofluidic Analytical TechniquesBinding SitesBiological AvailabilityDimethylpolysiloxanesKineticsMolecular StructurebaysilonDimethylpolysiloxanes

Identifiers

PMID30720811
PMCPMC6512955
OpenAlexW2912840511

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.