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Clinical Trial Summary

Nephrotic syndrome (NS) is characterized by gross proteinuria (>3.5 g/day), hypoalbuminaemia, edema and often hyperlipidemia. Hyperlipidemia is correlated with increased morbidity and mortality. The study aim is to investigate the role of the protein convertase subtilisin/kexin type 9 (PCSK9) in hyperlipidemia of NS, which has been suggested to play an important role. This is done by testing the following hypotheses: 1. PCSK9 is increased in patients with NS and hyperlipidemia compared to kidney-healthy controls 2. The level of PCSK9 in plasma correlates to the degree of proteinuria. 3. PCSK9 i increased in the kidney tissue of patients with NS The study will compare plasma levels of PCSK9 in correlation with degree of protein in the urine between test persons with NS and kidney healthy controls. Furthermore the investigators will study the the degree of PCSK9 in the kidney in biopsies obtained from test persons with nephrotic syndrome and test persons without proteinuria.


Clinical Trial Description

Hyperlipidemia in kidney disease is associated with a substantially increase of risk in development of atherosclerotic cardiovascular disease (CVD) (European Atherosclerosis Society 2011). Furthermore animal studies have suggested that hyperlipidemia escalates progression of glomerular injury. Nephrotic syndrome (NS) - the feature of many primary and secondary glomerulopathies - is characterized by gross proteinuria (>3.5 g/day), hypoalbuminaemia, edema and often hyperlipidemia. The protein Convertase subtilisin/kexin 9 (PCSK9) is over expressed in NS and has been suggested to play an important role in developing of hyperlipidemia. PCSK9 increases the LDL receptor degradation by preventing it from recycling to the cell membrane, resulting in increased plasma LDL cholesterol. PCSK9 is produced primarily in the liver, but to a lesser extent in the brain, intestine and kidney. A recent study found that the expression of renal PCSK9 is increased in mice with experimental NS compared to controls. The investigators want to further explore this. The overall aim is to decrease morbidity and mortality associated with NS and hyperlipidemia, by testing the following hypotheses: 1. PCSK9 is increased in patients with NS and hyperlipidemia compared to kidney-healthy controls 2. The level of PCSK9 in plasma correlates to the degree of proteinuria. 3. PCSK9 i increased in the kidney tissue of patients with NS The study want to compare plasma levels of PCSK9 in correlation with degree of protein in the urine between test persons with NS and kidney healthy controls. Furthermore the investigators will study the the degree of PCSK9 in the kidney in biopsies obtained from test persons with nephrotic syndrome and test persons without proteinuria in a subgroup of the test persons assigned to kidney biopsy regardless of the project. ;


Study Design


Related Conditions & MeSH terms


NCT number NCT06373913
Study type Observational
Source Kolding Sygehus
Contact Rikke Z Langkilde, MD, phd
Phone 004576362554
Email rikke.zachar.langkilde@rsyd.dk
Status Recruiting
Phase
Start date June 1, 2023
Completion date July 30, 2028

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