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Biomedical subjects

J Simek

Publications and source records attributed to J Simek.

At least 109 records · Page 6Linked to original sources
PubMed1985

Effect of glucose, fructose, sorbitol and amino acid solutions employed in clinical medicine on the development of liver regeneration after partial hepatectomy.

The authors studied the effect of glucose (G), fructose (F), sorbitol (So), 4% Nutramin S Spofa (NuS) and Nutramin C Spofa (NuC) on development of liver regeneration. NuS is used clinically to improve a negative nitrogen balance, while the amino acid composition of NuC has a beneficial effect on the ornithine cycle and thus helps to normalize the NH3 level in patients with liver failure. Glucose seems to be the best substance for an optimal onset of liver regeneration. Its onset in rats given NuC was slower than in animals given NuS, but 48 h after partial hepatectomy there was no difference between NuC and NuS as regards the total DNA content and 96 h after the operation there was no difference as regards either the number of mitoses or the number of liver cells. In addition to reducing the plasma ammonia level, therefore, NuC also has a favourable effect on the development on liver regeneration.

Amino Acids↗
PubMed1984

Effect of triiodothyronine or etiroxate on DNA synthesis in intact and regenerating liver.

An increase in liver DNA synthesis (p less than 0.01) was found in rats with an intact liver 24 h after the administration of a single dose of triiodothyronine (200 micrograms/kg i.g.) Statistically significant stimulation of DNA synthesis was also found in rats given triiodothyronine (p less than 0.01) or etiroxate (p less than 0.05) for 3 days at 24-hour intervals. When a single dose of triiodothyronine was administered immediately after partial hepatectomy (65-70% resection of the liver), increased stimulation of DNA synthesis (p less than 0.01) was found 24 h after the operation. Etiroxate partly inhibited DNA synthesis (p less than 0.05). In rats given triiodothyronine at 24-h intervals, starting at the time of partial hepatectomy, DNA synthesis 72 h after the operation was double the value in the control group. Marked stimulation of DNA synthesis by triiodothyronine (p less than 0.01) and an increase in the total DNA content of the liver (p less than 0.05) were likewise found 48 h after partial hepatectomy if the hormone was administered once, 24 h after the operation. The increase in the two indicators after the administration of etiroxate was not statistically significant.

Animals↗