Juvenile hormone regulation of cyclic AMP and cAMP phosphodiesterase activity in Oncopeltus fasciatus
| Autor: | Robert D. Everson, Dorothy Feir |
|---|---|
| Rok vydání: | 1976 |
| Předmět: |
medicine.medical_specialty
Insecta animal structures Large milkweed bug biology Phosphoric Diester Hydrolases Physiology Period (gene) fungi Phosphodiesterase biology.organism_classification Cyclic AMP phosphodiesterase activity Juvenile Hormones Endocrinology 3' 5'-Cyclic-AMP Phosphodiesterases Insect Science Internal medicine Juvenile hormone Cyclic AMP medicine Animals Instar Phosphodiesterase activity |
| Zdroj: | Journal of Insect Physiology. 22:781-784 |
| ISSN: | 0022-1910 |
| DOI: | 10.1016/0022-1910(76)90244-4 |
| Popis: | The fifth instar large milkweed bug, Oncopeltus fasciatus, exhibits fluctuation in both cyclic AMP titre and cyclic AMP phosphodiesterase activity. Cyclic AMP titres are lowest very early in the instar, increase rapidly to peak at 14% of the instar, and decrease throughout the remainder of the instar. The juvenile hormone (JH) mimic (Law-Williams mixture) treated bugs exhibit a similar pattern for cyclic AMP titres except the peak titre is at 20% of the instar. Phosphodiesterase activity is the greatest at 5% of the instar, decreases during the middle of the instar, and increases again at approximately 90% of the instar. One day corresponds to 14% of the instar in these bugs. Treatment with JH shifts the period of greatest activity to 11% of the instar. One day corresponds to 20% of the instar for JH treated bugs. It is proposed that these findings are due to a stimulatory effect of JH on phosphodiesterase activity. |
| Databáze: | OpenAIRE |
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