CKDu Treated With Intra-arterial Infusion of Autologous SVF Cells
- Conditions
- Chronic Renal Failure of Unknown Cause
- Interventions
- Genetic: Adipose-derived stromal vascular fraction cells
- Registration Number
- NCT05154591
- Lead Sponsor
- Samuel Vilchez, PhD
- Brief Summary
This is an interventional study to treat 18 patients with chronic kidney disease of unknown cause (CKDu), formerly known as Mesoamerican nephropathy (MeN), with autologous adipose tissue-derived stromal vascular fraction (SVF) cells transplanted by intra-arterial injection both kidneys.
This study assesses: (1) safety and tolerability, (2) preliminary evidence of efficacy, (3) exploratory evidence of clinical effects.
- Detailed Description
Patients under go 24 hours of preoperative hydration combined with N-actyl cysteine 300 mg IV for prevention of nephrotoxicity. Under general anesthesia 200-300 cc of lipoaspirate is collected into a sterile processing cannister (GID SFV-1, Louisville, CO, USA). The tissue is washed and dissociated with collagenase (Worthington CLS-1, Lakewood, NJ, USA) at a concentration of 200 CDU/ml of total volume for 50 minutes at 39°C. This is followed by inactivation using 40 cc of human serum albumin. SVF cells are separated via centrifugation for 10 minutes at 800 g. The cell pellet is extracted and resuspended in Harmann solution with an aliquot (10 µl) removed for counting and viability assessment of resulting total nucleated cells (YNC) through and image cytometer (ADAM MC, Portsmouth NH, USA).
Femoral artery catheterization is performed permitting advancement of a 100 cc balloon-tip catheter into the renal artery under fluoroscopic control, with position confirmation using 1 cc of OrtoRay® 320 contrast diluted 1:4 with Hartmann solution. SVF cells are then admixed with 200 cc Hartmann solution warmed to 37°C and in fused using a DRE infusion pump (DRE Medical, Louisville, KY, USA) over a 15 minute period with constant agitation. On the 1st pos-operative day creatinine and glomerular filtration rate are checked and the patient is discharged.
Follow-up studies include clinical assessment, chemistries, and renal ultrasound to assess intra-parenchymal renal volume, renal blood flow distribution, and hilar artery vascular resistance.
Recruitment & Eligibility
- Status
- COMPLETED
- Sex
- All
- Target Recruitment
- 18
- Diagnosis of Mesoamerican nephropathy
- Stages 3 and 4
- No other renal disease
- No essential hypertension
- Significant abnormalities in laboratory tests that contraindicate surgical procedures.
- Acute pathology or complications of significant chronic pathologies in the 6 months prior to study entry, including, but not limited to:
Medical history of deep vein thrombosis Uncontrolled hypertension Active infection Reduced cardiac ejection fraction Hepatitis B, C or HIV Diabetes treated with insulin or glucose lowering agents Anemia (Hb <9 g/dL) History of cancer Severe depression (Beck scale) Autoimmune disease
Study & Design
- Study Type
- INTERVENTIONAL
- Study Design
- SINGLE_GROUP
- Arm && Interventions
Group Intervention Description Bilateral Treatment Adipose-derived stromal vascular fraction cells Intra-arterial injection of SVF cells into the kidneys.
- Primary Outcome Measures
Name Time Method Preliminary evidence of efficacy Assessment of changes between day 7 and month 36 post intervention. Improvement in clinical parameter of GFR as compared with historical age and stage-matched controls.
Incidence of treatment related adverse events 36-months follow-up post intervention. Documentation of adverse events
- Secondary Outcome Measures
Name Time Method Renal blood flow. Up to month 12 post intervention. Distribution of intra-renal blood flow.
Kidney volume. Up to month 12 post intervention. Changes in kidney size (cm3).
Renal arterial resistive index. Up to month 12 post intervention. Decreases in hilar artery resistance index (less o equal to 0.7).
Trial Locations
- Locations (1)
Hospital Escuela Oscar Danilo Rosales Arguello
🇳🇮Leon, Nicaragua