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An Efficient Sieving Method to Isolate Intact Glomeruli from Adult Rat Kidney
Published on: November 1, 2018
[The morphological characteristics of the nephrotic form of glomerulonephritis in children at puberty]
Arkhiv Patologii
|May 1, 1993
Insights
Children aged 12-15 with severe nephrotic or mixed glomerulonephritis (GN) show significant vimentin and collagen disturbances. These findings highlight key cellular changes in pediatric kidney disease.
Area of Science:
- Nephrology
- Pediatric Nephrology
- Immunopathology
Background:
- Glomerulonephritis (GN) encompasses various kidney diseases affecting the glomeruli.
- Nephrotic and mixed forms of GN present significant challenges in both pediatric and adult populations.
- Understanding the pathobiology of severe GN is crucial for developing targeted therapies.
Purpose of the Study:
- To investigate the specific forms and pathomorphological characteristics of glomerulonephritis in children and adults.
- To analyze disturbances in extracellular matrix components like vimentin, collagen, and fibronectin in GN patients.
- To correlate immune deposit patterns with structural damage in severe pediatric GN cases.
Main Methods:
- Histopathological examination of kidney biopsies from 67 children and 26 adults with nephrotic or mixed GN.
- Immunohistochemical analysis of vimentin distribution.
- Assessment of collagen type IV and fibronectin content and integrity.
- Evaluation of immune deposit localization, including subepithelial deposits.
Main Results:
- The most severe and diverse forms of GN were observed in children aged 12-15 years.
- Specific severe forms included mesangio-capillary, mesangial proliferative, extracapillary proliferative GN with "half-moon" structures, and sclerosing GN.
- Pronounced alterations in vimentin, type IV collagen, and fibronectin were detected in the basal lamina.
- Damage to these matrix components was associated with various immune deposits, particularly subepithelial ones.
Conclusions:
- Children aged 12-15 years represent a critical group experiencing the most severe manifestations of glomerulonephritis.
- Significant disruptions in vimentin, type IV collagen, and fibronectin are key pathological features in these severe pediatric GN cases.
- Immune deposit formation, especially subepithelial, plays a crucial role in the pathogenesis and structural damage observed in pediatric GN.
Abstract:
67 children (from 3 to 18 years of age) and 26 adults (19-30-year-olds) with nephrotic or mixed forms of glomerulonephritis (GN) are studied. The most severe and pleiomorphic forms of GN are found in children of 12 to 15 years of age: mesangio-capillary, mesangial proliferative, extracapillary proliferative GN with "half-moon" structures, sclerosing GN. Pronounced disturbances of the vimentine content and distribution in the basal lamina, of i.v. type collagen, fibronectin in combination with its damage under the influence of various immune deposits (particularly subepithelial ones) are found in these patients.
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