Evidence map›Paper›PMID 29338016›Full record

ArticlePloS one2018

Ultrasound-mediated delivery and distribution of polymeric nanoparticles in the normal brain parenchyma of a metastatic brain tumour model.

Habib Baghirov, Sofie Snipstad, Einar Sulheim, Sigrid Berg, Rune Hansen, Frits Thorsen, Yrr Mørch, Catharina de Lange Davies, Andreas K O Åslund

Open access · goldAbstract read
In one paragraph

Article in PloS one, 2018. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 21 papers.

0numbers the graph read from it
0cells of the map it votes in
21citing papers in PubMed
4.4field-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

21 citing papers in PubMed, 60 citations in OpenAlex.

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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

9 authors at 3 institutions in 1 country.

Habib BaghirovDepartment of Physics, The Norwegian University of Science and Technology (NTNU), Trondheim, Norway.
Sofie SnipstadDepartment of Physics, The Norwegian University of Science and Technology (NTNU), Trondheim, Norway.
Einar SulheimDepartment of Physics, The Norwegian University of Science and Technology (NTNU), Trondheim, Norway.
Sigrid BergSINTEF Medical Technology, Trondheim, Norway.
Rune HansenSINTEF Medical Technology, Trondheim, Norway.
Frits ThorsenMolecular Imaging Center and Kristian Gerhard Jebsen Brain Tumour Research Centre, Department of Biomedicine, University of Bergen, Bergen, Norway.
Yrr MørchSINTEF Materials and Chemistry, Trondheim, Norway.
Catharina de Lange DaviesDepartment of Physics, The Norwegian University of Science and Technology (NTNU), Trondheim, Norway.ORCID 0000-0003-4371-5025
Andreas K O ÅslundDepartment of Physics, The Norwegian University of Science and Technology (NTNU), Trondheim, Norway.
Norwegian University of Science and Technology · NOSINTEF · NOUniversity of Bergen · NO

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

The treatment of brain diseases is hindered by the blood-brain barrier (BBB) preventing most drugs from entering the brain. Focused ultrasound (FUS) with microbubbles can open the BBB safely and reversibly. Systemic drug injection might induce toxicity, but encapsulation into nanoparticles reduces accumulation in normal tissue. Here we used a novel platform based on poly(2-ethyl-butyl cyanoacrylate) nanoparticle-stabilized microbubbles to permeabilize the BBB in a melanoma brain metastasis model. With a dual-frequency ultrasound transducer generating FUS at 1.1 MHz and 7.8 MHz, we opened the BBB using nanoparticle-microbubbles and low-frequency FUS, and applied high-frequency FUS to generate acoustic radiation force and push nanoparticles through the extracellular matrix. Using confocal microscopy and image analysis, we quantified nanoparticle extravasation and distribution in the brain parenchyma. We also evaluated haemorrhage, as well as the expression of P-glycoprotein, a key BBB component. FUS and microbubbles distributed nanoparticles in the brain parenchyma, and the distribution depended on the extent of BBB opening. The results from acoustic radiation force were not conclusive, but in a few animals some effect could be detected. P-glycoprotein was not significantly altered immediately after sonication. In summary, FUS with our nanoparticle-stabilized microbubbles can achieve accumulation and displacement of nanoparticles in the brain parenchyma.

Indexed as

Disease Models, AnimalNanoparticlesNeoplasm MetastasisUltrasonicsAnimalsBlood-Brain BarrierBrainBrain NeoplasmsDrug Delivery SystemsFemaleHumansMiceMice, Inbred NODMice, SCIDPolymersPolymers

Identifiers

PMID29338016
PMCPMC5770053
OpenAlexW2783171418

What OpenQuestion holds

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LicenceCC BY
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.