An interventional study of celecoxib in Diabetic Nephropathy, sponsored by National Institute of Diabetes and Digestive and Kidney Diseases (NIDDK). Terminated at 3 sites in United States. Open to participants aged 18 Years and older. Per ClinicalTrials.gov, last updated 2010-01-14.
Sponsored by National Institute of Diabetes and Digestive and Kidney Diseases (NIDDK) · Not applicable, Interventional, and Treatment
COX-2 is an enzyme that is found in several different tissues in the body. COX-2 appears to produce a substance called prostaglandins, mainly at sites of inflammation. Several drugs have been approved by the FDA that inhibit COX-2 such as celecoxib, or brand name Celebrex®. These drugs are primarily used in patients with osteoarthritis and rheumatoid arthritis to decrease inflammation and pain. COX-2 inhibitors have been developed because they are more selective in treatment of inflammation and pain and tend to have fewer gastrointestinal side effects than NSAIDs (nonsteroidal anti-inflammatory drugs) such as aspirin, ibuprofen, naproxen, etc.
The normal adult kidney expresses COX-2 in various regions. Prostaglandins, which are produced in the kidney by COX-2, may contribute to glomerular and tubulointerstitial inflammatory diseases (types of kidney diseases due to inflammation). In some animal studies, COX-2 inhibitors have been shown to be potentially beneficial in reducing the amount of protein spilled in the urine and preserving kidney function with these inflammatory kidney diseases. This study will compare the effects of COX-2 inhibitor to placebo (an inactive substance) in patients with diabetic nephropathy (kidney disease due to diabetes) and proteinuria (spilling protein in the urine) on 24-hour urinary protein excretion.
This study is designed to see whether COX-2 inhibitors are useful in treating diabetic patients with kidney disease. The purpose of this study is a short-term pilot study that will allow the gathering of important data such as the ability to carry out the study and carry it out safely. Subjects with proteinuria and diabetic kidney disease already on ACE (Angiotensin-Converting Enzyme) inhibitor or ARB (Angiotensin Receptor Blocker) therapy (types of blood pressure medicines) will be randomized to a type of study in which each subject will serve as their own control. The study is set up so that each subject will receive either the COX-2 inhibitor or placebo for a period followed by a period of no drug and then followed by a period of receiving either the COX-2 inhibitor or placebo (whichever they did not receive the first period).
The study is designed with a screening period, a baseline period and a treatment period. The purpose of screening is to identify eligible subjects and to exclude ineligible subjects. A careful history and physical examination will be conducted to ensure that the subject meets all the inclusion criteria and does not meet any of the exclusion criteria. The screening period lasts from 2 days to 2 months in duration.
The baseline period is from 2 - 3 months in duration. During the first baseline visit, there is withdrawal of previously used angiotensin converting enzyme inhibitors or angiotensin receptor antagonists (if any) and the initiation of quinapril 20 mg daily therapy (or irbesartan --150 - 300 mg daily). The subject will then be seen as frequently as determined by the investigator for subject's safety. The purpose of the second baseline visit is to determine safety after the initiation of therapy quinapril 20 mg po per day (or irbesartan 150 - 300 mg per day). The purpose of third baseline visit is to insure that the subject meets all the inclusion and none of the exclusion criteria prior to randomization. In addition, it will be assured that the subject's blood pressure is at a safe level to proceed with randomization and the laboratory and urinary collections will be made.
Only those subjects who fulfill all inclusion and none of the exclusion criteria will proceed to randomization. Also, in order to proceed to the randomization phase of the study, the subject must have a blood pressure of less than or equal to 135/85mmHg.
The treatment phase will consist of 18 weeks. During the treatment phase, the subject will be followed for safety and efficacy. The subjects will be randomly assigned to COX-2 inhibitor for 6 weeks (1st 6 week cycle), washout 3 weeks, placebo 6 weeks (2nd 6 week cycle), washout 3 weeks or to placebo 6 weeks (1st 6 week cycle), washout 3 weeks, COX-2 inhibitor 6 weeks (2nd 6 week cycle), washout 3 weeks.
During baseline and treatment periods, interim visits will be held in order to address blood pressure control or other problems that the patient or the PI deems necessary for protocol adherence.
3,840 studies on the registry are indexed under Kidney Diseases; 500 are open to participants now.
This study's enrollment of 30 is below the median of 70 across 2,640 interventional studies indexed under Kidney Diseases.
Browse Kidney Diseases studies →National Institute of Diabetes and Digestive and Kidney Diseases (NIDDK) is the lead sponsor of 529 studies on the registry; 54 are open to participants now.
Of its 79 completed or terminated interventional studies of FDA-regulated products, 50 (63%) have results posted.
Counted across the registry records on this site, refreshed daily.
Exclusion Criteria:
This study is terminated, as verified in Jan 2010. You cannot join it, but the record below documents what was studied.
Get an email when the registry record changes — status, dates, results — or when someone posts here.
Sign in to followQuestions and observations about this study, from anyone following it. Not medical advice, and not a channel to the study team — their contact details are on the registry record.
Sign in to join the discussion. Reading takes no account; posting does. You choose a display name, and a pseudonym is the default.
Nothing here yet. If you are running this trial, taking part in it, or weighing whether to, this is the place to say so.
National Institute of Diabetes and Digestive and Kidney Diseases (NIDDK)