Sökning: "ca2 signaling"
Visar resultat 1 - 5 av 128 avhandlingar innehållade orden ca2 signaling.
1. Oscillatory Ca2+ signaling in glucose-stimulated murine pancreatic β-cells : Modulation by amino acids, glucagon, caffeine and ryanodine
Sammanfattning : Oscillations in cytoplasmic Ca2+ concentration ([Ca2+]i) is the key signal in glucose-stimulated β-cells governing pulsatile insulin release. The glucose response of mouse β-cells is often manifested as slow oscillations and rapid transients of [Ca2+] i. LÄS MER
2. Studies of cAMP and Ca2+ signaling in pancreatic islet cells
Sammanfattning : The blood glucose-lowering and -elevating hormones insulin and glucagon are released from the pancreatic islet β- and α-cells, respectively. The intracellular messengers Ca2+ and cAMP have central roles in controlling the secretion of both hormones, but the underlying mechanisms are incompletely understood. LÄS MER
3. Roles of the transient receptor potential channels and the intracellular Ca2+ channels in Ca2+ signaling in the beta-cells
Sammanfattning : Previous studies from our group reported that pancreatic β-cells express ryanodine receptors (RyRs) that can mediate Ca2+-induced Ca2+ release (CICR). The full consequences of the activation of RyRs on Ca2+ signaling in these cells, however, remained unclear. LÄS MER
4. Epac2 signaling at the β-cell plasma membrane
Sammanfattning : Secretion of appropriate amounts of insulin from pancreatic β-cells is crucial for glucose homeostasis. The β-cells release insulin in response to glucose and other nutrients, hormones and neurotransmitters, which trigger intracellular signaling cascades, that result in exocytotic fusion of insulin-containing vesicles with the plasma membrane. LÄS MER
5. Oscillatory Signaling and Insulin Secretion from Single ß-cells
Sammanfattning : cAMP and Ca2+ are key regulators of exocytosis in many cells, including insulin-secreting pancreatic β-cells. Glucose-stimulated insulin secretion from β-cells is pulsatile and driven by oscillations of the cytoplasmic Ca2+ concentration ([Ca2+]i), but little is known about the kinetics of cAMP signaling and the mechanisms of cAMP action. LÄS MER