Related Experiment Video
Updated: May 15, 2026

An Intravital Microscopy-Based Approach to Assess Intestinal Permeability and Epithelial Cell Shedding Performance
Published on: December 3, 2020
Gut permeability in IgA nephropathy
L Layward1, J M Hattersley, H R Patel
1Department of Nephrology, Leicester General Hospital, Leicester, UK.
Abstract:
Gut permeability to small molecules was assessed by the differential absorption of cellobiose and mannitolin 18 patients with IgA nephropathy (IgAN). The urinary cellobiose:mannitol excretion ratio in patients did not differ (P = 0.42) from controls. These findings do not support the hypothesis that chronic increased mucosal permeability allows excessive antigen penetration to the mucosal immune system, predisposing to glomerular IgA deposition in IgA nephropathy. However, the patient with the greatest cellobiose:mannitol ratio developed macroscopic haematuria within 3 weeks of testing, raising the possibility of a transient abnormality in gut permeability.
Related Concept Videos
Transcytosis of IgG
IgG molecules from a mother undergo transcytosis starting around 13 weeks of gestation. The amount of IgG transferred and entering the fetal blood circulation increases with...
Acute Kidney Injury II: Pathophysiology
Factors Influencing Drug Absorption: Disease States and Pharmacology
Substances such as alcohol and specific drugs, including antineoplastics, can also negatively impact drug absorption. For instance,...
Drug Absorption: Factors Affecting GI Absorption
In...
Inflammatory Bowel Disease II: Ulcerative Colitis
Drug Elimination by Renal Route: Tubular Secretion

