Pfluegers Archiv/European Journal of Physiology 2001-07-01

Influence of 72% injury in one kidney on several organs involved in guanidino compound metabolism: a time course study.

O Levillain, B Marescau, I Possemiers, M Al Banchaabouchi, P P De Deyn

文献索引:Pflugers Arch. 442(4) , 558-69, (2001)

全文:HTML全文

摘要

Arginine (Arg) produced from citrulline originates mostly from kidneys. Arg is involved in guanidino compound biosynthesis, which requires interorgan co-operation. In renal insufficiency, citrulline accumulates in the plasma in proportion to renal damage. Thus, disturbances in Arg and guanidino compound metabolism are expected in several tissues. An original use of the model of nephrectomy based on ligating branches of the renal artery allowed us to investigate Arg and guanidino compound metabolism simultaneously in injured (left) and healthy (right) kidneys. The left kidney of adult rats was subjected to 72% nephrectomy. Non-operated, sham-operated and nephrectomized rats were studied for a period of 21 days. Constant renal growth was observed only in the healthy kidneys. Guanidino compound levels were modified transiently during the first 48 h. The metabolism and/or tissue content of several guanidino compounds were disturbed throughout the experimental period. Arg synthesis was greatly reduced in the injured kidney, while it increased in the healthy kidney. The renal production of guanidinoacetic acid decreased in the injured kidney and its urinary excretion was reduced. The experimentally proven toxins alpha-keto-delta-guanidinovaleric acid and guanidinosuccinic acid (GSA) accumulated only in the injured kidney. The urinary excretion of GSA and methylguanidine increased in nephrectomized rats. When the injured kidney grew again, the level of some guanidino compounds tended to normalize. Nephrectomy affected the guanidino compound levels and metabolism in muscles and liver. In conclusion, the specific accumulation of toxic guanidino compounds in the injured kidney reflects disturbances in renal metabolism and function. The healthy kidney compensates for the injured kidney's loss of metabolic functions (e.g. Arg: production). This model is excellent for investigating renal metabolism when a disease destroys a limited area in one kidney, as is observed in patients.


相关化合物

  • 2-胍基琥珀酸
  • N-Α-乙酰-L-精氨酸
  • 4-胍基丁酸

相关文献:

Uraemic guanidino compounds inhibit gamma-aminobutyric acid-evoked whole cell currents in mouse spinal cord neurones.

1999-04-16

[Neurosci. Lett. 265(2) , 83-6, (1999)]

Effect of NaCN on currents evoked by uremic retention solutes in dissociated mouse neurons.

2004-05-15

[Brain Res. 1008(1) , 107-12, (2004)]

Accumulation of methylguanidine and changes in guanidino compound levels in plasma, urine, and kidneys of furosemide-treated rats.

2008-06-01

[Metab. Clin. Exp. 57(6) , 802-10, (2008)]

Formation of guanidinosuccinic acid, a stable nitric oxide mimic, from argininosuccinic acid and nitric oxide-derived free radicals.

1999-07-01

[Free Radic. Res. 31(1) , 59-65, (1999)]

First indications demonstrating the preventive effects of NZ-419, a novel intrinsic antioxidant, on the initiation and/or progression of chronic renal failure in rats.

2009-07-01

[Biol. Pharm. Bull. 32(7) , 1204-8, (2009)]

更多文献...