Autoregulation of Glomerular Filtration Rate in Patients With Type 1 Diabetes During Spironolactone Therapy
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|ClinicalTrials.gov Identifier: NCT00335413|
Recruitment Status : Completed
First Posted : June 9, 2006
Last Update Posted : June 5, 2008
|Condition or disease||Intervention/treatment||Phase|
|Hypertension||Drug: Spironolactone||Phase 4|
Double-masked, randomized, crossover trial. In random order, patients will be treated with spironolactone 25 mg o.d. and matched placebo for 28 days.
On the last day of treatment, GFR will be determined twice on the same day: first without clonidine and secondly after injection of clonidine (clonidine induces a transient reduction in blood pressure, with no influence on renal plasma flow and GFR), in order to evaluate the effect of antihypertensive treatment with spironolactone on renal autoregulation of GFR.
The study will be preceded by a wash-out period of 1 month for patients receiving antihypertensive medication. Patients will be instructed to measure blood pressure twice daily, three days a week during this period. If, during the washout period, blood pressure exceeds 170/105 mm Hg or persistent edemas develop, treatment with long-acting loop diuretics will be initiated and continued throughout the rest of the study. If blood pressure despite diuretic treatment still exceeds 170 mm Hg systolic and/or 105 mm Hg diastolic, the patient will be excluded from the study and previous/appropriate antihypertensive treatment will be restarted.
|Study Type :||Interventional (Clinical Trial)|
|Actual Enrollment :||17 participants|
|Intervention Model:||Crossover Assignment|
|Official Title:||Autoregulation of Glomerular Filtration Rate in Patients With Type 1 Diabetes During Spironolactone Therapy|
|Study Start Date :||June 2006|
|Actual Study Completion Date :||April 2007|
- Changes in glomerular filtration rate
- Changes in blood pressure
- Changes in albuminuria
- Changes in fractional albumin clearance
To learn more about this study, you or your doctor may contact the study research staff using the contact information provided by the sponsor.
Please refer to this study by its ClinicalTrials.gov identifier (NCT number): NCT00335413
|Principal Investigator:||Hans-Henrik Parving, MD,DMSc,Prof||Steno Diabetes Center Copenhagen|