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- W2022854849 abstract "The formation of intimate associations among different hormone-secreting cells within the rat adenohypophysis may serve as a possible site for physiologic regulation. In this report we describe a high density plating method which enables us to study cell-to-cell interactions within anterior pituitary cell cultures. Trypsin-dispersed pituitary cell suspensions attach rapidly (within 6 hr) and quantitatively (95-97%) to glass or plastic surfaces when plated in medium containing microM calcium concentrations (pH 7.6-7.8). Freshly plated cell suspensions obtained from female pituitary glands contained subpopulations of mammotrophs 49.3%, somatotrophs 30.3%, gonadotrophs 12.6%, corticotrophs 3.4% and thyrotrophs 1.5%. Epithelial cell colonies were formed during a 3-day culture period as the cells flattened and re-established contacts with neighboring cells. Freeze-fracture electron microscopic analysis of these colonies produced morphological evidence for direct intercellular contacts among the hormone-secreting cells. Large areas of tight junctions and small gap junctions were identified on the membranes of the epithelial cells within these colonies. Cells which contained tight junctions usually contained microvilli and morphological signs of active hormone secretion. Small junctional plaques containing tightly packed intramembrane particles were also occasionally found on the membranes of cells which were actively secreting pituitary hormones. The high density plating procedure which is described in this report provides greater opportunity for cell-cell interaction and thus may prove to be a useful model for evaluating the role of intercellular communication within this tissue." @default.
- W2022854849 created "2016-06-24" @default.
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- W2022854849 date "1984-01-01" @default.
- W2022854849 modified "2023-10-12" @default.
- W2022854849 title "An in vitro model for studies of intercellular communication in cultured rat anterior pituitary cells" @default.
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- W2022854849 doi "https://doi.org/10.1016/0040-8166(84)90026-0" @default.
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