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Biomedical subjects

G Pagano

Publications and source records attributed to G Pagano.

At least 235 records · Page 13Linked to original sources

Embryotoxic and teratogenic effects of styrene derivatives on sea urchin development.

The effects of styrene and some of its derivatives on the fertilization and differentiation of sea urchins was investigated. When one of the gametes was pretreated for a few minutes, it was ascertained that the test substances act on the haploid nucleus, producing specific changes in the differentiation of the embryo. By this test system directly acting, weak mutagens may be detected.

Animals↗

Effects of a xanthine derivative (BL 191) on insulin secretion in normal man.

A xanthine derivative, named BL-191, was administered iv in 8 healthy volunteers alone and in association with glucose (0.33 g/kg body weight iv) or glybenclamide (1 mg iv). BL-191 was infused iv at a constant rate in a dose of 200 mg during 45 minutes. Blood glucose, free fatty acids and immunoreactive insulin were measured during one hour. It was impossible to demonstrate neither a direct effect nor an enhancement of insulin secretion during drug administration; in another experiment (treatment F) a higher dosage of BL-191 (100 mg as a priming dose + 200 mg as infusion dose) was likely ineffective. It appears that some difference in insulin response may be present in the single subject (not evident in the mean), indicating a difference in the beta-cell cAMP-system sensitivity in individuals. These negative results allow some considerations on the importance of the beta-cell cAMP-system in healthy human beings.

Adult↗