Katherine A. Vernon

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Controlled activation of the complement system, a key component of innate immunity, enables destruction of pathogens with minimal damage to host tissue. Complement factor H (CFH), which inhibits complement activation, and five CFH-related proteins (CFHR1-5) compose a family of structurally related molecules. Combined deletion of CFHR3 and CFHR1 is common(More)
Complement factor H (CFH) is a negative regulator of the alternative pathway of complement, and properdin is the sole positive regulator. CFH-deficient mice (CFH(-/-)) develop uncontrolled C3 activation and spontaneous renal disease characterized by accumulation of C3 along the glomerular basement membrane, but the role of properdin in the pathophysiology(More)
Atypical hemolytic uremic syndrome (aHUS) is a severe renal disorder that is associated with mutations in genes encoding proteins of the alternative complement pathway. Previously, we identified pathogenic variations in genes encoding complement regulators (CFH, CFI and MCP) in our aHUS cohort. In this study, we screened for mutations in the alternative(More)
Steroid sulphatases regulate the formation of oestrogenic steroids which can support the growth of endocrine-dependent breast tumours. The development of potent steroid sulphatase inhibitors could therefore have considerable therapeutic potential. Several such inhibitors have now been developed of which the most potent to date is oestrone-3-O-sulphamate(More)
Acute poststreptococcal glomerulonephritis is a common cause of acute nephritis in children. Transient hypocomplementemia and complete recovery are typical, with only a minority developing chronic disease. We describe a young girl who developed persistent kidney disease and hypocomplementemia after a streptococcal throat infection. Kidney biopsy 1 year(More)
INTRODUCTION To increase middle molecule clearances, high-flux dialyzers with increased internal filtration have been developed. However, dialyzer design and structure may affect thrombin generation and platelet activation, thereby risking increased clotting and reduced dialyzer clearances. METHODS Coagulation parameters, platelet, white cell and(More)
Complement factor H-related protein 5 (CFHR5) nephropathy is a familial renal disease endemic in Cyprus. It is characterized by persistent microscopic hematuria, synpharyngitic macroscopic hematuria and progressive renal impairment. Isolated glomerular accumulation of complement component 3 (C3) is typical with variable degrees of glomerular inflammation.(More)
Ultrastructurally, cells of five human breast cancer cell lines (MCF7, BT549, BT20, T47D, and HBL100) generally displayed many characteristics of their epithelial origin. The most distinctive features were observed in MCF7 cells, which consistently showed microvilli and submembranous granules. These ultrastructural findings served as a basis for localizing(More)
Many hemodialysis patients continue to dialyze using central venous access catheters in clinical practice. Catheters are associated with a number of recognized complications, including infection, catheter-associated fibrin sheath and thrombus leading to malfunction, central venous stenosis, and right atrial thrombus. However, symptomatic catheter embolus(More)
Membranoproliferative glomerulonephritis (MPGN) is characterised by mesangial expansion and hypercellularity and capillary wall thickening with capillary wall and mesangial deposits of immunoglobulin and/or complement. Two main forms are described in humans: MPGN type I with subendothelial and mesangial electron-dense deposits on electron microscopy, and(More)