3D Digital Pathology for a Chemical-Functional Analysis of Glomeruli in Health and PathologyClick to copy article linkArticle link copied!
- Hsiang-Hsin ChenHsiang-Hsin ChenAcademia Sinica, Institute of Physics, 128 Sec. 2, Academia Road, Nankang, Taipei 11529, TaiwanUniversity of Bordeaux, Inserm U1029 LAMC, Allée Geoffroy Saint-Hillaire, Bat. B2, F33600 Pessac-Cedex, FranceMore by Hsiang-Hsin Chen
- Tsung-Tse LeeTsung-Tse LeeAcademia Sinica, Institute of Physics, 128 Sec. 2, Academia Road, Nankang, Taipei 11529, TaiwanMore by Tsung-Tse Lee
- Ann ChenAnn ChenGraduate Institute of Life Sciences, National Defense Medical Center, 161 Section 6, Minquan East Road, Neihu District, 114, Taipei City, TaiwanMore by Ann Chen
- Yeukuang HwuYeukuang HwuAcademia Sinica, Institute of Physics, 128 Sec. 2, Academia Road, Nankang, Taipei 11529, TaiwanMore by Yeukuang Hwu
- Cyril Petibois*Cyril Petibois*E-mail: [email protected]Academia Sinica, Institute of Physics, 128 Sec. 2, Academia Road, Nankang, Taipei 11529, TaiwanUniversity of Bordeaux, Inserm U1029 LAMC, Allée Geoffroy Saint-Hillaire, Bat. B2, F33600 Pessac-Cedex, FranceMore by Cyril Petibois
Abstract

Determining the filtration function and biochemical status of kidney at the single glomerulus level remains hardly accessible, even from biopsies. Here, we provide evidence that IR spectro-microscopy is a suitable method to account for the filtration capacity of individual glomeruli along with related physio-pathological condition. A ∼4 μm voxel resolution 3D IR image reconstruction is built from consecutive tissue sections, thus, providing a 3D IR spectrum matrix of an individual glomerulus. The filtration capacity of glomeruli was quantitatively determined after BaSO4 perfusion, and additional chemical data could be used to determined oxidative stress effects and fibrosis, thus, combining functional and biochemical information from the same 3D IR spectrum matrix. This analytical approach was applied on mice with unilateral ureteral obstruction (UUO) inducing chronic kidney disease. Compared to the healthy condition, UUO induced a significant drop in glomeruli filtration capacity (−17 ± 8% at day 4 and −48 ± 14% at day 14) and volume (36 ± 10% at day 4 and 67 ± 13% at day 14), along a significant increase of oxidative stress (+61 ± 19% at day 4 and +84 ± 17% at day 14) and a change in the lipid-to-protein ratio (−8.2 ± 3.6% at day 4 and −18.1 ± 5.9% at day 14). Therefore, IR spectro-microscopy might be developed as a new 3D pathology resource for analyzing functional and biochemical parameters of glomeruli.
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