Evidence map›Paper›PMID 28954217›Full record

ReviewEuropean journal of pharmaceutical sciences : official journal of the European Federation for Pharmaceutical Sciences2018

One (sub-)acinus for all: Fate of inhaled aerosols in heterogeneous pulmonary acinar structures.

Philipp Hofemeier, Kenishiro Koshiyama, Shigeo Wada, Josué Sznitman

Abstract readReview
In one paragraph

Review in European journal of pharmaceutical sciences : official journal of the European Federation for Pharmaceutical Sciences, 2018. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 22 papers.

0numbers the graph read from it
0cells of the map it votes in
22citing papers in PubMed
–field-weighted citation impact
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

22 citing papers in PubMed.

  1. Assessment of ventilation heterogeneity and particle deposition in asthmatics using combined SPECT/CT imaging and computational modeling approaches.European journal of pharmaceutical sciences : official journal of the European Federation for Pharmaceutical Sciences · 2025
    Article
  2. Article
  3. Review
  4. Article
  5. Article
  6. A computed tomography imaging-based subject-specific whole-lung deposition model.European journal of pharmaceutical sciences : official journal of the European Federation for Pharmaceutical Sciences · 2022
    Article
  7. Article
  8. Review
  9. Review
  10. Airborne transmission of respiratory viruses.Science (New York, N.Y.) · 2021
    Review
  11. Article
  12. [Numerical simulation on the deposition characteristics of inhaled particles in human pulmonary acinus region under the influence of multi-factors].Sheng wu yi xue gong cheng xue za zhi = Journal of biomedical engineering = Shengwu yixue gongchengxue zazhi · 2020
    Article
  13. Article
  14. MultiscaleCurrent opinion in biomedical engineering · 2019
    Article
  15. Article
  16. Article
  17. [Progress on numerical simulation of the deposition of inhaled particles in human pulmonary acinus region].Sheng wu yi xue gong cheng xue za zhi = Journal of biomedical engineering = Shengwu yixue gongchengxue zazhi · 2019
    Review
  18. Review
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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.

Philipp HofemeierDepartment of Biomedical Engineering, Technion - Israel Institute of Technology, Haifa 32000, Israel.
Kenishiro KoshiyamaGraduate School of Engineering Science, Osaka University, Toyonaka, Osaka 560-8531, Japan.
Shigeo WadaGraduate School of Engineering Science, Osaka University, Toyonaka, Osaka 560-8531, Japan.
Josué SznitmanDepartment of Biomedical Engineering, Technion - Israel Institute of Technology, Haifa 32000, Israel. Electronic address: sznitman@bm.technion.ac.il.

Funding

European Research Council 677772
6 · The paper itself

Abstract

Computational Fluid Dynamics (CFD) have offered an attractive gateway to investigate in silico respiratory flows and aerosol transport in the depths of the lungs. Yet, not only do existing models lack sufficient anatomical realism in capturing the heterogeneity and morphometry of the acinar environment, numerical simulations have been widely restricted to domains capturing a mere few percent of a single acinus. Here, we present to the best of our knowledge the most detailed and comprehensive in silico simulations to date on the fate of aerosols in the acinar depths. Our heterogeneous acinar domains represent complete sub-acinar models (i.e. 1/8th of a full acinus) based on the recent algorithm of Koshiyama & Wada (2015), capturing statistics of human acinar morphometry (Ochs et al. 2004). Our simulations deliver high-resolution, 3D spatial-temporal data on aerosol transport and deposition, emphasizing how variances in acinar heterogeneity only play a minor role in determining general deposition outcomes. With such tools at hand, we revisit whole-lung deposition predictions (i.e. ICRP) based on past 1D lung models. While our findings under quiet breathing substantiate general deposition trends obtained with past predictions in the alveolar regions, we underscore how deposition fractions are anticipated to increase, in particular during deep inhalation. For such inhalation maneuver, our simulations support the notion of significantly augmented deposition for all aerosol sizes (0.005-5.0μm). Overall, our efforts not only help consolidate our mechanistic understanding of inhaled aerosol transport in the acinar depths but also continue to bridge the gap between "bottom-up" in silico models and regional deposition predictions from whole-lung models. Such quantifications provide what is deemed more accurate deposition predictions in morphometrically-faithful models and are particularly useful in assessing inhalation strategies for deep airway deposition (e.g. systemic delivery).

Indexed as

Computer SimulationNebulizers and VaporizersAdministration, InhalationAerosolsChemistry, PharmaceuticalDrug Delivery SystemsHumansHydrodynamicsLungModels, BiologicalParticle SizePermeabilityPulmonary AlveoliRespiratory TherapyRespiratory Tract AbsorptionAerosolsAerosol transportAlveolar depositionComputational fluid dynamicsInhalation therapyIn silico simulationsPulmonary acinus

Identifiers

PMID28954217
PMCPMC5810902

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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.