Effect of the Consumption of Ferric Hydroxide Adipate on Urinary Phosphorus Excretion.
HealthyChronic Kidney DiseasesFerric hydroxide adipate is a ferric iron supplement containing iron hydroxide and a dietary organic acid that was developed at MRC Human Nutrition Research. We aim to determine if the ingestion of ferric hydroxide adipate with food induces a reduction in urinary phosphate concentration, compared with the administration of placebo plus the same food on a different occasion. We hypothesise that ferric hydroxide adipate binds some phosphate ions in the gastrointestinal tract, which prevents part of the phosphate load in a meal from being absorbed. On another visit, calcium will be given with the same food, as a positive control, since this element is well known to restrict dietary phosphate absorption through the formation of insoluble calcium phosphates in the gut lumen. We will compare urinary phosphate concentrations after co-ingestion of the calcium salt and food versus urinary phosphate following ferric hydroxide adipate and the same food. Additionally, the calcium data will be compared with placebo data, since a significant reduction in urinary phosphate concentrations after calcium treatment will confirm the suitability of the study design. Finally, iron absorption from the ferric hydroxide adipate treatment will be determined by labelling this preparation with 58Fe and measuring day 14 erythrocyte 57Fe:58Fe. The study design is: Three-way cross-over volunteer absorption study. Volunteers will not be told which treatment they receive (placebo, ferric hydroxide adipate, or supplemental calcium). Researchers co-ordinating the study on a day to day basis will be aware of treatment allocation, but analysts will not be told which samples correspond to which treatments.
Post Authorisation Safety Study of Renvela® in Chronic Kidney Disease Patients Not on Dialysis With...
HyperphosphataemiaChronic Kidney DiseaseThe primary objective of this study is to assess in a post-approval clinical setting the safety profile of sevelamer carbonate (Renvela®) tablets and powder in adult hyperphosphataemic chronic kidney disease (CKD) patients not on dialysis with serum phosphorus ≥1.78 mmol/L. Patients will be treated in accordance with the Renvela® Summary of Product Characteristics (SmPC) and followed according to the investigator's standard clinical practice management. Each patient will be followed up for 12 months or up to the time they start dialysis, whichever occurs first.
Usability and Tolerability of the Norditropin NordiFlex® Injection Device in Children Never Previously...
Growth Hormone DisorderGrowth Hormone Deficiency in Children7 moreThis study is conducted in Europe. The purpose of this study is to assess the impact on daily life for children new to using a growth hormone injection device.
Long-Term Study on Safety and Immunogenicity of HEPLISAV™ and Engerix-B® in Adults With Chronic...
Chronic Kidney DiseaseThe purpose of this study is to determine the durability of seroprotection of HEPLISAV™ and Engerix-B® and the number of injections of each vaccine needed to maintain seroprotection in a cohort of chronic kidney disease (CKD) patients over time.
Nebivolol Versus Sustained Release Metoprolol Succinate in Patients With Chronic Kidney Disease...
Chronic Kidney DiseaseThe investigators postulate that nebivolol will be more effective than an equivalent dose of a comparative BB, specifically sustained release metoprolol succinate, in improving the availability of NO, lowering blood pressure, and reducing albuminuria with implications for slowing progression of CKD and cardiovascular protection in this high risk population. The objective of this proposal is to conduct a randomized pilot clinical trial to determine the relative efficacy and tolerability of nebivolol versus sustained release metoprolol succinate in improving blood pressure in patients with CKD and albuminuria. The primary endpoint would be a decrease in asymmetric dimethyl arginine (ADMA). Secondary endpoints would include a reduction in blood pressure, urinary F2-isoprostanes and albuminuria.
Role of Prohepcidin in Uremic Patients
InflammationChronic Kidney DiseaseThe investigators aimed to study the effect of prohepcidin levels on hematologic parameters and inflammatory markers in non-diabetic uremic patients. The investigators selected three groups of patients: Hemodialysis group, peritoneal dialysis group and the group with stage 4 chronic kidney disease. A control group was formed from healthy volunteers also. Each group has been planned to be formed of about 25 patients. Diabetic patients were excluded. Prohepcidin, hsCRP, IL-6, fibrinogen have been planned to be studied besides other routine biochemical analysis including hematological ones.
Sleep Disorders in Pediatric Dialysis
Chronic Kidney Disease (CKD)Sleep disorders (SD) are common in adults with Chronic Kidney Disease (CKD) on dialysis with a reported prevalence of 60-80%. To date three studies have reported on SDs in children with CKD but these have all been based on questionnaire data alone. The findings were not confirmed with polysomnograms (PSG), the gold standard to diagnose SD, or actigraphy, a validated tool to assess the sleep/ wake cycle over a prolonged period in the home. This is highly relevant given the poor sensitivity and specificity of even validated questionnaires alone. The effect of untreated pediatric SD is pervasive. This study will provide the first objective assessment of SDs using PSGs in children with severe CKD, both on and off dialysis. Therefore, we will recognize and when possible treat SD in this severe CKD cohort potentially contributing to their immediate management (eg improved control of hypertension, improved school performance), while improving their Quality of Life (QOL) and helping ensure they achieve their full potential.
Primary Cardiovascular Risk Prevention With Aspirin in Chronic Kidney Disease Patients
Chronic Kidney Disease Stage 4Chronic Kidney Disease Stage 3The objective of the study is to examine whether the use of low-dose aspirin (75-100 mg / day) reduces the risk of cardiovascular disease in patients with chronic kidney disease (stage 3 or 4).
Social Determinants in Chronic Disease in British Columbia
Cystic FibrosisDiabetes Mellitus Type I1 moreAnyone who practices clinical medicine will understand that socially disadvantaged children will have worse health outcomes, no matter what the underlying condition might be. There is limited prospective data on the effects of social deprivation on children in BC and there is none concerning the effects of social deprivation on children with chronic diseases. In order to generate relevant data for those who manage children with chronic diseases in BC, the investigators wish to perform an observational study of the relationship between questionnaire-derived social variables and measured outcomes in children with cystic fibrosis, type 1 diabetes, and chronic kidney disease. Our working hypothesis is that there is an association between social determinants of health (income, education, race) and health outcomes in children with cystic fibrosis, type 1 diabetes and chronic renal failure, that is independent of access to health care (assessed by distance to nearest specialty clinic and number of clinic visits in the last year).
Accelerated Immunosenescence and Chronic Kidney Disease
Renal FailureThe aim of this study is to investigate the impact of renal function and dialysis techniques on the percentage of senescent T lymphocytes.