Journal: Frontiers in Immunology
Article Title: Cryofibrinogen-associated glomerulonephritis with paraproteinemia
doi: 10.3389/fimmu.2025.1576917
Figure Lengend Snippet: Cryoprecipitates detection. (A) The precipitates were detected in patient’s plasma but not in serum under 4°C. (B) The precipitates dissolved under 37°C. (C, D) Monoclonal IgG λ was detected in precipitates coexisting with weak fibrinogen (IFE). (E) Crystal-like precipitates with straight column shape at vertical section and tubules with spiral shape at cross-section (10000×). (F) Gold labeled fibrinogen scattered within the crystal area (IEM, 40000×). (G) Genetic analysis identifed heterozygous c.719-27G>C variant in intron 4 of FGB gene. (H) The relative mRNA expression level of FGB was more than two times higher in the patient comparing with her daughter, followed by FGG and FGA . (I) Treatment and follow-up of fibrinogen level and kidney injury. FGB : fibrinogen beta chain; FGG , fibrinogen gamma chain; FGA , fibrinogen alpha chain; Scr, serum creatinine; ALB, albumin; CTX, cyclophosphamide; Pred, prednisone; UPCR, urinary protein-to-creatinine ratio; Fib, fibrinogen, MIg, monoclonal immunoglobulin.
Article Snippet: The quantitative analysis of fibrinogen alpha chain (FGA), fibrinogen beta chain (FGB), and fibrinogen gamma chain (FGG) mRNA was performed using qRT-PCR on an Applied Biosystems QuantStudio 5 Real-Time PCR System.
Techniques: Clinical Proteomics, Labeling, Variant Assay, Expressing