Evidence map›Paper›PMID 23643062›Full record

ArticleUltrasound in medicine & biology2013

Enhanced intracellular delivery of a model drug using microbubbles produced by a microfluidic device.

Adam J Dixon, Ali H Dhanaliwala, Johnny L Chen, John A Hossack

Abstract read
In one paragraph

Article in Ultrasound in medicine & biology, 2013. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 24 papers.

0numbers the graph read from it
0cells of the map it votes in
24citing papers in PubMed
4.7field-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

24 citing papers in PubMed, 58 citations in OpenAlex.

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  6. Microfluidic and Nanofluidic Intracellular Delivery.Advanced science (Weinheim, Baden-Wurttemberg, Germany) · 2021
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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

4 authors at 1 institution in 1 country.

Adam J DixonDepartment of Biomedical Engineering, University of Virginia, Charlottesville, VA, USA.
Ali H Dhanaliwala
Johnny L Chen
John A Hossack
University of Virginia · US

Funding

MEDICAL SCIENTIST TRAINING PROGRAMT32GM007267 · NIGMS · UNIVERSITY OF VIRGINIA CHARLOTTESVILLE · PI GARCIA-BLANCO, MARIANO A. · 1985 to 2024
$13.4M
Molecular Targeted, Focused, Ultrasound-Based Delivery of Antiproliferative DrugsR01HL090700 · NHLBI · UNIVERSITY OF VIRGINIA · PI HOSSACK, JOHN A · 2008 to 2012
$1.8M
PiV Ultra 12 - 24 Ultra High Speed Camera for Ultrasound Microbubble ResearchS10RR025594 · NCRR · UNIVERSITY OF VIRGINIA · PI HOSSACK, JOHN A · 2009 to 2009
$499k
NCRR NIH HHS S10 RR025594NHLBI NIH HHS R01 HL090700
6 · The paper itself

Abstract

Focal drug delivery to a vessel wall facilitated by intravascular ultrasound and microbubbles holds promise as a potential therapy for atherosclerosis. Conventional methods of microbubble administration result in rapid clearance from the bloodstream and significant drug loss. To address these limitations, we evaluated whether drug delivery could be achieved with transiently stable microbubbles produced in real time and in close proximity to the therapeutic site. Rat aortic smooth muscle cells were placed in a flow chamber designed to simulate physiological flow conditions. A flow-focusing microfluidic device produced 8 μm diameter monodisperse microbubbles within the flow chamber, and ultrasound was applied to enhance uptake of a surrogate drug (calcein). Acoustic pressures up to 300 kPa and flow rates up to 18 mL/s were investigated. Microbubbles generated by the flow-focusing microfluidic device were stabilized with a polyethylene glycol-40 stearate shell and had either a perfluorobutane (PFB) or nitrogen gas core. The gas core composition affected stability, with PFB and nitrogen microbubbles exhibiting half-lives of 40.7 and 18.2 s, respectively. Calcein uptake was observed at lower acoustic pressures with nitrogen microbubbles (100 kPa) than with PFB microbubbles (200 kPa) (p < 0.05, n > 3). In addition, delivery was observed at all flow rates, with maximal delivery (>70% of cells) occurring at a flow rate of 9 mL/s. These results demonstrate the potential of transiently stable microbubbles produced in real time and in close proximity to the intended therapeutic site for enhancing localized drug delivery.

Indexed as

AnimalsCells, CulturedDrug Delivery SystemsEquipment DesignEquipment Failure AnalysisFluoresceinsMicrobubblesMicrofluidic Analytical TechniquesMyocytes, Smooth MuscleRatsSonicationFluoresceinsfluorexon

Identifiers

PMID23643062
PMCPMC3674153
OpenAlexW2035903849

What OpenQuestion holds

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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.