Cited by 68Microfluidic and Capillary Electrophoresis ApplicationsMicrofluidic and Bio-sensing TechnologiesBlood properties and coagulation

Synthetic Microvascular Networks for Quantitative Analysis of Particle Adhesion

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Prabhakarpandian, Balabhaskar, Pant, Kapil, Scott, Robert C., Patillo, Christopher B., Irimia, Daniel, Kiani, Mohammad F., Sundaram, Shivshankar·2008·Biomedical Microdevices

Abstract

We have developed a methodology to study particle adhesion in the microvascular environment using microfluidic, image-derived microvascular networks on a chip accompanied by Computational Fluid Dynamics (CFD) analysis of fluid flow and particle adhesion. Microfluidic networks, obtained from digitization of in vivo microvascular topology were prototyped using soft-lithography techniques to obtain semicircular cross sectional microvascular networks in polydimethylsiloxane (PDMS). Dye perfusion studies indicated the presence of well-perfused as well as stagnant regions in a given network. Furthermore, microparticle adhesion to antibody coated networks was found to be spatially non-uniform as well. These findings were broadly corroborated in the CFD analyses. Detailed information on shear rates and particle fluxes in the entire network, obtained from the CFD models, were used to show global adhesion trends to be qualitatively consistent with current knowledge obtained using flow chambers. However, in comparison with a flow chamber, this method represents and incorporates elements of size and complex morphology of the microvasculature. Particle adhesion was found to be significantly localized near the bifurcations in comparison with the straight sections over the entire network, an effect not observable with flow chambers. In addition, the microvascular network chips are resource effective by providing data on particle adhesion over physiologically relevant shear range from even a single experiment. The microfluidic microvascular networks developed in this study can be readily used to gain fundamental insights into the processes leading to particle adhesion in the microvasculature.

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  • A vascularized microfluidic tumor model (MTM) consisting of a tumor compartment and a surrounding network of vessels, separated by a 2 μm wide porous interface, was developed and characterized.

    “A vascularized MTM has been developed and characterized, consisting of a tumor compartment and a surrounding network of vessels, separated by a 2 μ m wide porous interface (Figure 1A,B). 17,21,26”

    From Rapid Assessment of Nanoparticle Extravasation in a Microfluidic Tumor Model (2019) · cites this paper as [26]

    The Introduction describes a microfluidic network of vessels developed to study particle adhesion, and Results §3.1 reports its fabrication and perfusion. The cited paper does not describe a tumor compartment or a 2 μm porous interface; Methods §2.2 instead describes a semicircular network sealed to glass. No page numbers are available in our copy. (LLM, conf=0.87)

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Authors
Prabhakarpandian, B., Pant, K., Scott, R. C., Patillo, C. B., Irimia, D., Kiani, M. F., & Sundaram, S.
Affiliations
  • CFD Research Corporation (United States) (US)
  • Temple University (US)
  • Massachusetts General Hospital (US)
Corresponding author
Sundaram, Shivshankar
Venue
Biomedical Microdevices
Published
2008-03-08
Volume
10
Issue
4
Pages
585-595
ISSN
  • 1387-2176 (ISSN-L)
  • 1572-8781
OpenAlex
W2079340368
Cited by
68
References
50
Citations by year
2024: 2 · 2023: 1 · 2021: 5 · 2020: 6 · 2019: 3 · 2018: 8 · 2017: 5 · 2016: 3 · 2015: 5 · 2014: 6 · 2013: 3 · 2012: 5
FWCI
3.54
Type
journal article
Language
en
Open access
Locations
  • Biomedical Microdevices (publishedVersion)
  • PubMed (publishedVersion)
  • Europe PMC (PubMed Central) (acceptedVersion)
  • PubMed Central (acceptedVersion)
Funders
  • National Heart, Lung, and Blood Institute (R44HL076034)
  • National Institute of Biomedical Imaging and Bioengineering (P41EB002503)
Topics
  • Physical Sciences › Engineering › Biomedical Engineering › Microfluidic and Capillary Electrophoresis Applications
  • Physical Sciences › Engineering › Biomedical Engineering › Microfluidic and Bio-sensing Technologies
  • Health Sciences › Medicine › Pulmonary and Respiratory Medicine › Blood properties and coagulation
Keywords
particle adhesion, microvascular networks, microfluidic networks, computational fluid dynamics, shear rate, particle flux, stagnant regions, polydimethylsiloxane, soft lithography, flow chamber, microvascular blood flow
MeSH terms
Adhesiveness, Equipment Design, Humans, Immunoglobulin G, Microcirculation, Microspheres, Models, Theoretical, Particle Size, P-Selectin, Coated Materials, Biocompatible, Microfluidic Analytical Techniques

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