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Patients with sickle cell anaemia may develop renal disease. In fact, renal disease occurred in 40% of adults patients (macroalbuminuria) with evolution to end-stage renal disease for half of them. Microalbuminuria is an early and sensitive marker of glomerular damage. It appears during the first decade and occurred in 20 to 25% of infants (2 to 18 years). Physiopathology of renal scarring is not well understood actually. Renal scarring might be due to glomerular hyperfiltration and vascular and endothelial damage. Angiotensin-converting enzyme inhibitors (ACE) were studied and used in diabetic nephropathy. In a study on 26 sickle cell adults, albuminuria was reduced about 50% by ACE compared to placebo after six months treatment. It might be interesting studying ACE efficacy in sickle cell children with microalbuminuria because renal disease is directly related to sickle cell and is not influenced by other cardiovascular risk factors like in adult patients.
We hypothesized to have a successful ACE treatment in more than 40% of cases after a nine months treatment period. A success is defined as a 50% reduction of the albuminuria/creatinuria ratio.
This is a multicenter study. In order to include 72 patients we should pre-include 400 patients.
They will be pre-included in the study after signing the protocol consent. For final inclusion in the study, three albuminuria/creatinuria ratio should be over or equal to 3mg/mmol. If so, inclusion will be done and patient will be randomized (placebo/énalapril) by CLEANWEB software. A blood sample will be done.
Treatment tolerance will be check up at day 7 (blood sample for renal tolerance and clinical examination), month 1(clinical examination), month 3(clinical examination), month 6(clinical examination), and month 9 (clinical examination). Treatment efficacy will be evaluated by albuminuria/creatinuria ratio at month 1, month 3, month 6, and month 9. Physiopathology of ACE efficacy will be studied at first day and month 9 by dosage of ICAM-1 and VCAM-1.
Treatment plain posology (0.5mg/kg/day) will be progressively obtained on a three months period, beginning at 0.2mg/kg/day.
Allocation: Randomized, Control: Placebo Control, Endpoint Classification: Safety/Efficacy Study, Intervention Model: Parallel Assignment, Masking: Double Blind (Subject, Caregiver, Investigator), Primary Purpose: Treatment
Sickle Cell Disease
Trousseau Hospital, Nephro-pediatric unit
Not yet recruiting
Assistance Publique - Hôpitaux de Paris
Published on BioPortfolio: 2014-08-27T03:14:52-0400
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One of the sickle cell disorders characterized by the presence of both hemoglobin S and hemoglobin C. It is similar to, but less severe than sickle cell anemia.
An abnormal hemoglobin resulting from the substitution of valine for glutamic acid at position 6 of the beta chain of the globin moiety. The heterozygous state results in sickle cell trait, the homozygous in sickle cell anemia.
An acute purulent infection of the meninges and subarachnoid space caused by Streptococcus pneumoniae, most prevalent in children and adults over the age of 60. This illness may be associated with OTITIS MEDIA; MASTOIDITIS; SINUSITIS; RESPIRATORY TRACT INFECTIONS; sickle cell disease (ANEMIA, SICKLE CELL); skull fractures; and other disorders. Clinical manifestations include FEVER; HEADACHE; neck stiffness; and somnolence followed by SEIZURES; focal neurologic deficits (notably DEAFNESS); and COMA. (From Miller et al., Merritt's Textbook of Neurology, 9th ed, p111)
A disease characterized by chronic hemolytic anemia, episodic painful crises, and pathologic involvement of many organs. It is the clinical expression of homozygosity for hemoglobin S.
The condition of being heterozygous for hemoglobin S.
Nephrology - kidney function
Nephrology is a specialty of medicine and pediatrics that concerns itself with the study of normal kidney function, kidney problems, the treatment of kidney problems and renal replacement therapy (dialysis and kidney transplantation). Systemic conditions...
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