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Light chain deposition disease (LCDD) is a rare blood cell disease which is characterized by deposition of fragments of infection-fighting immunoglobulins, called light chains (LCs), in the body. LCs are normally cleared by the kidneys, but in LCDD, these light chain deposits damage organs and cause disease.
Amyloid light-chain (AL) amyloidosis, also known as primary amyloidosis, is the most common form of systemic amyloidosis. [1] The disease is caused when a person's antibody -producing cells do not function properly and produce abnormal protein fibers made of components of antibodies called light chains. These light chains come together to form ...
Light Chain Deposition Disease (LCDD) features deposition of light chains only. This is most commonly associated with κ free light chains. [1] Serum protein electrophoresis or immunofixation is positive in 25-76% of cases, while urine protein electrophoresis or immunofixation is positive in 42-90% of cases. [2]
Amyloid light chains deposition in shoulder joint causes enlarged shoulders, also known as "shoulder pad sign". [18] Amyloid light chain depositions can also cause bilateral symmetric polyarthritis. [18] The deposition of amyloid proteins in the bone marrow without causing plasma cell dyscrasias is called amyloidoma. It is commonly found in ...
Monoclonal free light chains, free heavy chains, or a mixture of these chains can deposit in the kidney and other organs to cause systemic monoclonal immunoglobulin deposition disease; free κ or λ light chains can deposit selectively in the kidney's proximal tubule to cause light chain proximal tubulopathy or in the kidney's distal tubule to ...
Serum free light-chain measurement. Free light chains (FLCs) are immunoglobulin light chains that are found in the serum (blood) in an unbound (free) state. In recent decades, measuring the amount of free light chains (FLCs) in the blood has become a practical clinical test. FLC tests can be used to diagnose and monitor diseases like multiple ...
Cardiac amyloidosis is a subcategory of amyloidosis where there is depositing of the protein amyloid in the cardiac muscle and surrounding tissues. Amyloid, a misfolded and insoluble protein, can become a deposit in the heart's atria, valves, or ventricles. These deposits can cause thickening of different sections of the heart, leading to ...
These AL light chains are misfolded leading to the disordered deposition of amyloid multimers and fibrils in the glomeruli and blood vessels of the kidney. [3] Other types of amyloidosis related MGRS disorders include heavy chain amyloidosis (deposition of only heavy amyloid chains in the kidney)(AH) and heavy and light chain amyloidosis (AHL ...