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BC: Articoli scritti da J. Ripepi

I marcatori di clonalità per la diagnosi e la valutazione della risposta alla terapia nell’amiloidosi da catene leggere: il ruolo del laboratorio
Clonal biomarkers for diagnosis and response to treatment assessment in light chain amyloidosis: the role of the laboratory
<p>Serum monoclonal components, Bence-Jones proteinuria (PBJ) and free light chains (FLC) are clonal biomarkers for diagnosis and response assessment in light chain (AL) amyloidosis. Two clinical reports are presented here toi llustrate the utility of these biomarkers. The first case is a patient with AL &kappa;appa renal amyloidosis. Serum and urine immunofixation were negative and the FLC ratio was abnormal. Immunoelectron microscopy on tissue biopsy was negative. Amyloid typing was achieved by mass spectrometry on fat pad aspirate. The second case is a patient with AL cardiac amyloidosis with PBJ lambdaand low concentration of amyloidogenic FLC (32 mg/L). Urine capillary electrophoresis was used to assess response to treatment. The progressive reduction of PBJ after treatment was accompanied by reduction of NT-proBNP and improvement of clinical conditions. Clonal biomarkers are irreplaceable tools in management of AL amyloidosis. There is a need for more sensitive techniques for identification of monoclonal FLC on serum and urine.</p>
Biochimica Clinica ; 17(1)
Casi Clinici - Case Report
 
Un caso di gammopatia monoclonale di significato renale
A case of monoclonal gammopathy of renal significance
<p>Monoclonal gammopathy of renal significance (MGRS) is a condition defined by the presence of a small-B cell clone causing a renal disease trough deposition in renal tissues of the monoclonal component (MC) secreted by the B cells. Since MGRS is associated with several types of renal diseases, characterization of renal damage caused by protein deposition is important to define the correct diagnosis as well as the identification of the MC. Adult Fanconi Syndrome (FS) is characterized by the presence of a MC and damage in the proximal tubule with impaired small molecules transport. We report the case of a 32 years old man with moderate kidney failure, normoglycemic glycosuria and hypouricemia. Further investigations revealed hypophosphoremia and phosphaturia; an IgG&kappa; MC was detected by immunofixation. The kidney biopsy confirmed FS suspect. This case underlines that the results of the biochemical analysis carried on for the diagnosis of FS, need to be confirmed by histopathologic analysis.</p>
Biochimica Clinica ; 17(1)
Casi Clinici - Case Report