A computational model of flow and species transport in the mesangium

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3 Scopus citations


A variety of macromolecules accumulate in the glomerular mesangium in many different diseases, but the physics of the transport of these molecules within the mesangial matrix has not been extensively studied. We present a computational model of convection and diffusion within the porous mesangial matrix and apply this model to the specific instance of immunoglobulin A (IgA) transport in IgA nephropathy. We examine the influence of physiological factors including glomerular basement membrane (GBM) thickness and mesangial matrix density on the total accumulation of IgA. Our results suggest that IgA accumulation can be understood by relating convection and diffusion, thus demonstrating the importance of intrinsic glomerular factors.

Original languageEnglish (US)
Pages (from-to)F222-F229
JournalAmerican Journal of Physiology - Renal Physiology
Issue number3
StatePublished - Feb 1 2016

Bibliographical note

Funding Information:
This work was supported by National Science Foundation Grant CMMI-1300649 and National Institute of Diabetes and Digestive and Kidney Diseases Fellowship Grant F31-DK-097947 (to S. E. Hunt).

Publisher Copyright:
© 2016 the American Physiological Society.


  • Convection
  • Diffusion
  • Glomerulus
  • IgA
  • IgA nephropathy
  • Mesangial cells
  • Mesangium


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