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Pathogenetic and diagnostic aspects of dialysis-related amyloidosis
J Schaeffer1, J Floege, G Ehlerding
1Division of Nephrology, Hannover Medical School, Germany.
Abstract:
Dialysis-related amyloidosis (DRA) is a major cause of morbidity in end-stage renal disease patients. While retention of the precursor protein beta 2-microglobulin (beta 2-m) forms the essential basis for DRA, pathogenetic concepts include: qualitative and quantitative alterations in beta 2-m metabolism; local and systemic inflammatory changes, partly related to different treatment modes; general predisposing factors such as age at the onset of dialysis treatment. Clinical and radiological signs, as well as synovial thickening on sonography, suggest the presence of DRA, but histomorphological demonstration of beta 2m-amyloid is required for definitive proof. Scintigraphic imaging of DRA represents an additional, sensitive non-invasive diagnostic tool. Successful kidney transplantation stops the progression of DRA.
Insights
Dialysis-related amyloidosis (DRA) is a significant complication in end-stage renal disease patients due to beta 2-microglobulin (beta 2-m) buildup. Kidney transplantation effectively halts the progression of this amyloidosis.
Area of Science:
- Nephrology
- Pathology
- Medical Imaging
Background:
- Dialysis-related amyloidosis (DRA) is a major cause of morbidity in patients with end-stage renal disease.
- The retention of beta 2-microglobulin (beta 2-m) is the fundamental basis for DRA.
- Pathogenesis involves alterations in beta 2-m metabolism, inflammation, and predisposing factors like age at dialysis onset.
Purpose of the Study:
- To review the pathogenesis, clinical presentation, and diagnostic modalities of dialysis-related amyloidosis.
- To highlight the role of beta 2-microglobulin in DRA development.
- To discuss the impact of kidney transplantation on DRA progression.
Main Methods:
- Review of existing literature on dialysis-related amyloidosis.
- Analysis of pathogenetic concepts, clinical signs, and diagnostic tools.
- Evaluation of the effect of successful kidney transplantation.
Main Results:
- DRA is primarily caused by the accumulation of beta 2-microglobulin.
- Clinical and radiological findings, along with sonographic synovial thickening, suggest DRA.
- Histomorphological confirmation of beta 2m-amyloid is definitive; scintigraphy is a sensitive non-invasive tool.
Conclusions:
- Successful kidney transplantation is crucial as it halts the progression of dialysis-related amyloidosis.
- Understanding the multifactorial pathogenesis of DRA is key for patient management.
- Advanced diagnostic tools aid in the definitive diagnosis and monitoring of DRA.