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Effect of short-term essential amino acid-containing dialysate in young children on CAPD
M Honda1, Y Kamiyama, O Hasegawa
1Department of Pediatric Nephrology and Urology, Tokyo Metropolitan Children's Hospital, Japan.
Insights
Essential amino acid-containing dialysate (EAAD) effectively increased serum amino acid levels in children on continuous ambulatory peritoneal dialysis (CAPD). This suggests EAAD may improve nutritional status in pediatric CAPD patients.
Area of Science:
- Pediatric Nephrology
- Nutritional Biochemistry
Background:
- Children on continuous ambulatory peritoneal dialysis (CAPD) often experience hypoproteinemia and malnutrition.
- Assessing nutritional interventions is crucial for improving outcomes in pediatric CAPD patients.
Purpose of the Study:
- To evaluate the short-term effectiveness of essential amino acid-containing dialysate (EAAD) on serum amino acid concentrations in young children undergoing CAPD.
- To investigate the impact of EAAD on both essential and non-essential amino acids in pediatric CAPD patients.
Main Methods:
- A study involving young children on CAPD.
- Administration of a specialized dialysate containing essential amino acids (EAA) and glucose.
- Measurement of serum amino acid concentrations before, during, and after a 6-hour CAPD cycle.
Main Results:
- Serum essential amino acid levels (except methionine) increased significantly one hour after EAAD treatment, returning to baseline by the end of the cycle.
- Serum methionine showed a substantial and sustained increase throughout the CAPD cycle.
- Serum tyrosine levels increased, while other non-essential amino acids decreased, suggesting enhanced protein synthesis.
Conclusions:
- EAAD administration leads to significant short-term changes in serum amino acid profiles in pediatric CAPD patients.
- The observed alterations in amino acid concentrations suggest that EAAD may promote the uptake of non-essential amino acids for protein synthesis.
- These findings indicate a potential benefit of EAAD in improving the nutritional status of children undergoing CAPD.
Abstract:
In young children on CAPD, hypoproteinemia and malnutrition are often observed. We used essential amino acid-containing dialysate (EAAD) to assess short-term effectiveness on serum amino acid concentrations in young children undergoing CAPD. EAAD consisted of a 540 ml, 1.5% glucose-containing dialysate and 100 ml of 7.4% essential amino acid (EAA) solution. Aside from methionine, all serum EAA rose during the 6 hour peritoneal dialysis cycle using EAAD, peaking at about 200% of pre-treatment level one hour after start of treatment. They then returned to near pre-treatment levels at the end of the cycle. However, serum methionine increased 680% of pre-treatment level, one hour after start and 390% at the end of the cycle. In the serum non-EAA tyrosine, which showed low levels in patients with chronic renal failure, increased after EAAD treatment. Other non-EAA, most of which showed increased levels in patients with chronic renal failure, decreased after EAAD treatment. These changes in serum amino acids suggest that EAA, absorbed from EAAD, may have increased uptake of non-EAA in protein synthesis. This may improve the nutritional status of young children on CAPD.