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92 active trials for Chronic Kidney Disease

Effect of Pitavastatin on Erythrocyte Membrane Fatty Acid Contents in Patients With Chronic Kidney Disease

Patients with chronic kidney disease (CKD) are high risk for death and cardiac disease is the major cause of death. CKD patients commonly have traditional risk factors for coronary artery disease, such as age, gender, hypertension, cigarette smoking, and dyslipidemia. Previous studies have reported that reducing cholesterol levels is associated with reducing morbidity and mortality from atherosclerosis. In particular, pharmacologic treatment using statin has been decreased the risk of adverse cardiovascular events in CKD population. Therefore, guidelines recommended the use of statin in CKD patients. On the other hands, niacin or fibrates is not recommended concomitantly with statins in patients with CKD because of increased risk of adverse events. In addition, recent study has reported that there was no incremental clinical benefit from the addition of niacin to statin therapy, in further decreasing the incidence of major cardiac events. Supplementation with omega-3 fatty acid (FA) lowers the risk of cardiovascular death in patients with myocardial infarction. This cardioprotective effect of omega-3 FA can be explained by anti-inflammatory, anti-oxidative, or anti-thrombic effects. In addition, omega-3 FA modulates cell membrane receptors and affects signal transduction and eicosanoid metabolism. The erythrocyte membrane content of FA has been shown to correlated with the FA content of the myocardium. The risk of cardiovascular disease is significantly reduced in patients with high omega-3 FA, such as eicosapentanoic acid or docosahexaenoic acid (DHA), in the erythrocyte membrane. In contrast, high levels of erythrocyte membrane total trans-FA, trans-oleic acid, and arachidonic acid (AA) are associated with an increased risk of cardiovascular disease. Erythrocyte membrane monounsaturated FA (MUFA) content, including oleic acid, is significantly higher in patients with acute coronary syndrome than control subjects. The erythrocyte membrane oleic acid content was also higher in dialysis patients who have high risks of cardiovascular disease compared to control subjects. Therefore, the modification of erythrocyte membrane FA content is very important with respect to cardiovascular disease. In a previous study, erythrocyte membrane omega-3 FA was shown to be increased and the MUFA content was decreased after omega-3 FA supplementation in HD patients. However, there are no reports about the effect of statin on the erythrocyte membrane FA composition in CKD. Recent study has reported that those with pitavastatin 4mg were decreased DHA to AA ratio, but those with pravastatin 20 mg were not change the DHA to AA ratio in patient with CAD. Statin may have important role on the modulation of erythrocyte membrane FA. In this study, the investigators hypothesized that pitavastatin supplementation can modify erythrocyte membrane FA content, including MUFA and oleic acid, in CKD patients. In addition, the investigators evaluated the effect of pitavastatin on adiponectin and glucose level in CKD patients.

Start: May 2016
Chronic Kidney Disease and Bone - Correlation Between 18F-PET-TT Imaging and Histomorphometry of Bone in CKD Patients

Chronic kidney disease (CKD) is an increasing public health problem and the number of patient with chronic kidney disease is increasing worldwide. Bone abnormalities are found almost universally in patients with CKD requiring dialysis and in the majority of patients with CKD stages 3-5. Chronic kidney disease-mineral bone disorder (CKD-MBD) is a complex disorder of bone and mineral metabolism, which is associated with disorder in circulating levels of hormones and development of secondary hyperparathyroid disease. The abnormalities of mineral homeostasis impair bone remodeling and mineralization and results in cortical and trabecular defects and an increased fracture risk. There is also an association with increased morbidity and mortality. CKD-MBD is also associated with development of calcification of the blood vessels. During the last decade it has been increasingly acknowledged that mineral and bone disorder contribute to the excessively high cardiovascular morbidity and mortality in patients with chronic kidney disease. The diagnosis of mineral bone disorder and the underlying bone histology in CKD patients is challenging. The treatment of renal osteodystrophy (ROD) and especially the treatment of fractures in this patient group, depends on the underlying bone histopathology and bone turnover. The gold standard for diagnosing the subtypes of ROD is bone biopsy, but it is invasive and requires considerable expertise regarding quantitative histomorphometry and interpretation. Plasma parathormone (PTH) measurement is commonly used to evaluate these patients, and generally extremely high or low PTH levels predict the underlying bone disorder. Still PTHs ability to correctly estimate turnover in bone is limited. Several biomarkers such as tartrate-resistant acid phosphatase 5b (TRAP5b) and procollagen type 1 N-terminal propetide (PINP) has been investigated, but no biomarker in clinical use has yet been proven suitable or superior to PTH to estimate overall bone histology. 18F-NaF positron emission tomography (18F-NaF PET) is a noninvasive quantitative imaging technique that allows assessment of regional bone turnover at clinically relevant sites. 18F-NaF is a bone-seeking tracer, which reflects remodeling of bone and osteoblast activity25. 18F-NaF serves as an efficient tracer to measure metabolic changes in bone. A correlation between histomorphometric markers such as bone formation rate (BFR) and tracer activity in the 18F- NaF PET scan in CKD patients has previously been shown in one small study. This study's goal is to evaluate, if 18-NaF-Positron emission tomography-computed tomography (18F-PET-TT) can be used in the assessment of CKD patients. The hypothesis is that 18F-PET-TT correlates with the histomorphometry of bone biopsy and with the calcification score in CKD patients and that 18F-PET-TT maybe can be used as a diagnostic imaging technique in the future.

Start: December 2016