<p>We studied the reparative and antioxidant effects of thymogen (10 and 100 μg/kg) and its modifications in equimolar doses (12 and 120 μg/kg) obtained by attaching the amino acid D-alanine (D-Ala) to the N- or C-terminus of the peptide molecule. A single intraperitoneal injection of hydrazine hydrochloride caused a decrease in catalase activity and an increase in molondialdehyde (MDA) concentration. Administration of peptides in lower doses inhibited LPO and stimulated reparative regeneration of hepatocytes. Thymogen analogue with D-Ala at the C-terminus was most effective. Increasing the doses of thymogen (100 μg/kg) and its analogues (120 μg/kg) did not lead to further increase in their hepatoprotective activity.</p>

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Hepatoprotective Effects of Thymogen Analogues in Hydrazine Hepatopathy in Rats

  • A. A. Chulanova,
  • A. M. Smakhtina,
  • G. S. Mal,
  • I. I. Bobyntsev,
  • M. Yu. Smakhtin,
  • E. S. Mishina,
  • P. M. Kopeykin,
  • E. G. Bogomolova

摘要

We studied the reparative and antioxidant effects of thymogen (10 and 100 μg/kg) and its modifications in equimolar doses (12 and 120 μg/kg) obtained by attaching the amino acid D-alanine (D-Ala) to the N- or C-terminus of the peptide molecule. A single intraperitoneal injection of hydrazine hydrochloride caused a decrease in catalase activity and an increase in molondialdehyde (MDA) concentration. Administration of peptides in lower doses inhibited LPO and stimulated reparative regeneration of hepatocytes. Thymogen analogue with D-Ala at the C-terminus was most effective. Increasing the doses of thymogen (100 μg/kg) and its analogues (120 μg/kg) did not lead to further increase in their hepatoprotective activity.