Dysregulation of the alternative complement pathway is a major pathogenic mechanism in two rare renal diseases: atypical haemolytic uraemic syndrome (aHUS) and membranoproliferative glomerulonephritis (MPGN). We report on a 66-year-old male with chronic hepatitis C virus (HCV) infection and a combined liver-kidney transplant that was diagnosed with MPGN at the age of 63 years and a 5-year-old boy who presented with aHUS at the age of 21 months following a infection. Both patients carried similar frameshift variants in the complement gene that segregate with reduced levels of factor H-related 5 (FHR-5). We conclude that low FHR-5 levels may predispose to viral and bacterial infections that then trigger different renal phenotypes.
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http://dx.doi.org/10.1093/ckj/sfaa004 | DOI Listing |
Urol Oncol
January 2025
Department of Biomedical and Clinical Sciences, Linköping University, Linköping, Sweden; Department of Oncology-Pathology, Karolinska Institute, Stockholm, Sweden.
Urine is an attractive biospecimen for noninvasive tests to facilitate bladder tumor diagnostics. Three different point-of-care (POC) tests based on lateral flow immunoassays (LFAs) are currently commercially available: UBC® Rapid Test, BTA stat®, and NMP22 BladderChek. The present review discusses these different tests based on their performance, clinical utility and the nature of the respective analytes.
View Article and Find Full Text PDFClin Biochem
January 2025
Department of Hospital Pharmacy, Nagasaki University Hospital, Nagasaki, Japan; Department of Molecular Pathochemistry, Graduate School of Biomedical Sciences, Nagasaki University, Nagasaki, Japan. Electronic address:
Background: The factors contributing to the development of severe coronavirus disease 2019 (COVID-19) following infection with severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) remain unclear. Although the presence of immune complexes (ICs), formed between antibodies and their antigens, has been linked to COVID-19 severity, their role requires further investigation, and the antigens within these ICs are yet to be characterized.
Method: Here, a C1q enzyme-liked immunosorbent assay and immune complexome analysis were used to determine IC concentrations and characterize IC antigens, respectively, in the sera of 64 unvaccinated COVID-19 patients with PCR-confirmed SARS-CoV-2 infection, enrolled at seven participating centers in 2020.
Ophthalmol Sci
October 2024
Singapore Eye Research Institute, Singapore National Eye Centre, Singapore, Singapore.
Objective: Our objectives were to identify correlation patterns between complement and lipid pathways using a multiomics data integration approach and to determine how these interconnections affect age-related macular degeneration (AMD).
Design: Nested case-control study.
Subjects And Controls: The analyses were performed in a subset of the Singapore Indian Eye Study.
Cytokine
December 2024
Department of Rheumatology, Uijeongbu Eulji Medical Center, Eulji University School of Medicine, Uijeongbu, Republic of Korea; Eulji Rheumatology Research Institute, Eulji University, Uijeongbu, Republic of Korea. Electronic address:
Background: Complement Factor H-Related protein 5 (CFHR5) belongs to the factor H/CFHR family and regulates the complement system by modulating factor H's inhibitory activity against C3b. Despite its known role, the impact of CFHR5 on autoimmune arthritis and its relationship to pathophysiological changes in arthritis and bone loss remain unclear. This study aimed to assess the effect of CFHR5 on aggressive osteoclast activity and arthritis using a murine model of collagen antibody-induced arthritis (CAIA).
View Article and Find Full Text PDFPediatr Nephrol
February 2025
UOC of Nephrology, Dialysis and Transplantation, IRCCS Istituto Giannina Gaslini, Genoa, Italy.
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