homeostasis/metabolism
• intraperitoneal glucose challenge in fed mice results in a slight reduction in plasma insulin levels and marked reduction of glucose-induced first-phase insulin secretion
• glucose-induced first phase (less than 5 min) insulin secretion in in situ pancreatic perfusions is inhibited by 78%
• glucose-induced insulin secretion in isolated islets is much lower than in control islets
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• mutants exhibit a slight hyperglycemia under basal and fasted conditions
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• intraperitoneal glucose challenge in fed mice results in a slight reduction in plasma insulin levels and marked reduction of glucose-induced first-phase insulin secretion
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• intraperitoneal glucose challenge in fed mice shows impaired glucose tolerance
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endocrine/exocrine glands
• calcium currents are reduced in beta cells from mutant mice
• exocytosis in response to the initial depolarizations is reduced in single beta cells
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• intraperitoneal glucose challenge in fed mice results in a slight reduction in plasma insulin levels and marked reduction of glucose-induced first-phase insulin secretion
• glucose-induced first phase (less than 5 min) insulin secretion in in situ pancreatic perfusions is inhibited by 78%
• glucose-induced insulin secretion in isolated islets is much lower than in control islets
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