Purine nucleotides and their metabolites in erythrocytes of streptozotocin diabetic rats.
Diabetes Metab
; 30(6): 557-67, 2004 Dec.
Article
en En
| MEDLINE
| ID: mdl-15671926
ABSTRACT
OBJECTIVES:
In the present study it was tried to obtain a complete overview of purine nucleotide metabolism in erythrocytes of streptozotocin (STZ) induced diabetes mellitus rats.METHODS:
Erythrocyte levels of the main nucleotides (ATP, ADP, AMP, GTP, GDP, GMP, IMP, NAD+, NADP+), nucleosides (Ado, Guo, Ino) and the base Hyp were measured using the HPLC method. The parameters that can be deduced from their concentrations TAN, TGN and AEC, GEC expressed by the ratio of high/low energy nucleoside phosphates were calculated. The effects of streptozotocin-induced diabetes on the concentration and metabolism of rat erythrocyte purine and pyridine nucleotides and the activity of Na+, K+-ATPase as well as Ca2+-ATPase were investigated.RESULTS:
Increased dephosphorylation of adenine nucleotides (found as the increased concentration of Ado and Hyp and the decrease in AEC value) and the decrease in ATP and TAN and the changes in the concentrations of NAD+ and NADP+ suggest serious purine and pyridine metabolism disruptions in diabetic erythrocytes and decrease in ATPases activity.CONCLUSION:
The observations suggest that purine nucleotide degradation is markedly accelerated in erythrocytes of STZ diabetic rats.
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Colección:
01-internacional
Base de datos:
MEDLINE
Asunto principal:
Nucleótidos de Purina
/
Diabetes Mellitus Experimental
/
Eritrocitos
/
NADP
Límite:
Animals
Idioma:
En
Revista:
Diabetes Metab
Asunto de la revista:
ENDOCRINOLOGIA
/
METABOLISMO
Año:
2004
Tipo del documento:
Article
País de afiliación:
Polonia