Oral supplementation of branched-chain amino acid improves nutritional status in elderly patients on chronic haemodialysis

被引:111
作者
Hiroshige, K [1 ]
Sonta, T [1 ]
Suda, T [1 ]
Kanegae, K [1 ]
Ohtani, A [1 ]
机构
[1] Social Insurance Chikuho Hosp, Div Renal, Nougata City, Fukuoka 8220034, Japan
关键词
branched-chain amino acids; dietary intake; elderly patient; haemodialysis; nutrition;
D O I
10.1093/ndt/16.9.1856
中图分类号
R3 [基础医学]; R4 [临床医学];
学科分类号
1001 ; 1002 ; 100602 ;
摘要
Background. Anorexia may be associated with decreased plasma levels of branched-chain amino acids (BCAA). In malnourished elderly haemodialysis (HD) patients, oral BCAA supplementation may improve anorexia, resulting in improved nutritional status. Methods. Among 44 elderly (age > 70 years) patients on chronic HD, 28 patients with low plasma albumin concentration (<3.5 g/dl) were classified as the malnourished group; they also suffered from anorexia. The other 16 patients did not complain of anorexia and were classified as the welt-nourished group. We performed a 12-month, placebo-controlled, double-blind study on the malnourished group. Fourteen patients each received daily oral BCAA supplementation (12 g/day) or a placebo: in random order in a crossover trial for 6 months. Body fat percentage, lean body mass, plasma albumin concentration, dietary protein and caloric intakes, and plasma amino acid profiles were monitored. Results. Lower plasma levels of BCAA and lower protein and caloric intakes were found in the malnourished group as compared to the well-nourished group. In BCAA-treated malnourished patients, anorexia and poor oral protein and caloric intakes improved within a month concomitant with the improvement in plasma BCAA levels over the values in well-nourished patients. After 6 months of BCAA supplementation, anthropometric indices showed a statistically significant increase and mean plasma albumin concentration increased from 3.31 g/dl to 3.93 g/dl. After exchanging BCAA for a placebo, spontaneous oral food intake decreased, but the favourable nutritional status persisted for the next 6 months. In 14 patients initially treated with a placebo, no significant changes in nutritional parameters were observed during the first 6 months. However, positive results were obtained by BCAA supplementation during the subsequent 6 months, and mean plasma albumin concentration increased from 3.27 g/dl to 3.81 g/dl. Conclusions. Normalization of low plasma levels of BCAA by oral supplementation can reduce anorexia and significantly improve overall nutritional status in elderly malnourished HD patients.
引用
收藏
页码:1856 / 1862
页数:7
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