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1. Intracellular and whole-cell recordings were made from primary cultures of rat intermediate pituitary cells; beta-endorphin secretion was also measured by radioimmunoassay. The effects of dopamine receptor activation on hormone secretion, calcium currents and resting potassium conductance were compared. 2. Spontaneous sodium-dependent action potentials(More)
The whole pituitary contents of beta-endorphin and ACTH were found to vary widely among 5 inbred strains of mice. beta-endorphin values were 2.5-fold different and ACTH values 1.5-fold. Strains low in beta-endorphin were also low in ACTH. The existence of genetic differences raises the possibility that there exist, or can be developed, strains with(More)
We have investigated the molecular weight forms of pro-opiomelanocortin (POMC)-derived peptides present in rat pituitaries during fetal and early postnatal development (embryonic Day 14 to 3 day neonate). At all early ages examined, the major immunoreactive form of corticotropin (ACTH) was POMC. Only during late fetal and early postnatal stages did(More)
Endostatin (ES), the C-terminal fragment of collagen XVIII known for its anti-angiogenic properties, is associated with neurological diseases in mammals. In this study, we investigated the effect of ES on nerve growth factor (NGF)-induced neuronal differentiation, migration, neuritogenesis, and neurite extension. ES partially inhibited PC12 cell(More)
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