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C5b-9-Targeted Molecular MR Imaging in Rats with Heymann Nephritis: A New Approach in the Evaluation of Nephrotic Syndrome
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C5b-9-Targeted Molecular MR Imaging in Rats with Heymann Nephritis: A New Approach in the Evaluation of Nephrotic Syndrome
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Journal Article
C5b-9-Targeted Molecular MR Imaging in Rats with Heymann Nephritis: A New Approach in the Evaluation of Nephrotic Syndrome
2015
Overview
Membranous nephropathy (MN) is the major cause of adult nephrotic syndrome, which severely affects patients' quality of life. Currently, percutaneous renal biopsy is required to definitively diagnose MN. However, this technique is invasive and may cause severe complications. Therefore, an urgent clinical need exists for dynamic noninvasive monitoring of the renal state. In-depth molecular imaging studies could assist in finding a solution. Membrane attack complex C5b-9 is the key factor in the development of MN, and this protein primarily deposits in the glomerulus. The present study bound polyclonal antibodies to C5b-9 with ultrasmall superparamagnetic iron oxide (USPIO) nanoparticles to obtain C5b-9-targeted magnetic resonance molecular imaging probes. The probes were injected intravenously into rats with Heymann nephritis, a classic disease model of MN. The signal intensity in the T2*-weighted imaging of kidneys in vivo using 7.0 Tesla magnetic resonance imaging decreased significantly 24 hours after injection compared to the untargeted and control groups. This signal change was consistent with the finding of nanoparticle deposits in pathological glomeruli. This study demonstrated a novel molecular imaging technique for the assessment of MN.
Publisher
Public Library of Science,Public Library of Science (PLoS)
Subject
/ Biopsy
/ Complement Membrane Attack Complex - immunology
/ Glomerulonephritis, Membranous - diagnosis
/ Glomerulonephritis, Membranous - immunology
/ Glomerulonephritis, Membranous - metabolism
/ Injuries
/ Kidney Glomerulus - pathology
/ Kidney Glomerulus - ultrastructure
/ Kidneys
/ Magnetite Nanoparticles - ultrastructure
/ Male
/ Medicine
/ Nephrotic Syndrome - diagnosis
/ Nephrotic Syndrome - immunology
/ Nephrotic Syndrome - metabolism
/ NMR
/ Probes
/ Rats
/ Rodents
