Plasma, urinary, and erythrocyte concentrations of guanidino compounds in patients with chronic renal failure.
Guanidino compounds are among the most likely candidates for uremic toxins. We determined the plasma, erythrocyte, and urinary concentration of guanidino compounds in 30 hemodialysis patients and 15 patients with chronic renal failure who had not undergone hemodialysis. Guanidino compounds were measured by high-performance liquid chromatography. Plasma levels of taurocyamine, guanidinosuccinic acid, alpha-N-acetyl-L-arginine, creatine, guanidinobutyric acid, guanidine, and methylguanidine were significantly increased in patients with chronic renal failure with or without hemodialysis. In contrast, plasma guanidinoacetic acid concentrations were significantly decreased. Erythrocyte concentrations of creatinine, guanidinosuccinic acid, guanidine and methylguanidine were also markedly elevated. No correlation was observed between plasma creatinine concentration and erythrocyte concentration of guanidinosuccinic acid or methylguanidine. However, there was a significant correlation between plasma and erythrocyte methylguanidine, and between plasma and erythrocyte guanidinosuccinic acid.[1]References
- Plasma, urinary, and erythrocyte concentrations of guanidino compounds in patients with chronic renal failure. Tanaka, A., Takahashi, Y., Mizokuchi, M., Shimada, N., Koide, H. Renal failure. (1999) [Pubmed]
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