Sökning: "pancreatic beta cell"
Visar resultat 1 - 5 av 145 avhandlingar innehållade orden pancreatic beta cell.
1. Studies of neuropeptides in pancreatic beta cell function with special emphasis on islet amyloid polypeptide (IAPP)
Sammanfattning : The presence of protein amyloid in pancreas and its association to diabetes was first described 100 years ago in 1901, but was not identified as Islet Amyloid Polypeptide (IAPP) until 1986. The aim of the present work was to determine the role of the beta cell hormone, IAPP, in normal pancreatic islet physiology and during early disturbances of islet function. LÄS MER
2. Frk/Shb Signalling in Pancreatic Beta-cells : Roles in Islet Function, Beta-cell Development and Survival as Implicated in Mouse Knockout Models
Sammanfattning : The adaptor protein Shb and the non-receptor tyrosine kinase Frk have been implicated in intracellular signalling in insulin-producing beta cells. In this thesis, knockout mice are used to further elucidate the role of Shb and Frk for beta cell number, cytokine-induced cell death, and glucose homeostasis. LÄS MER
3. Studies of individual pancreatic -cells : Electrophysiological analysis of rhythmic behaviour and development of new techniques
Sammanfattning : The insulin concentration in blood varies periodically, which is believed to prevent down-regulation of the hormone receptors. Loss of the regular insulin oscillations is considered to be an early sign of developing diabetes. LÄS MER
Sammanfattning : Diabetes mellitus is metabolic disorder caused by a defect or lack of beta cell-produced insulin that controls blood glucose homeostasis. In addition to glucose, insulin secretion is regulated by the autonomic nervous system (ANS); the neurotransmitter acetylcholine as well as monoamines, such as dopamine, serotonin, melatonin and norepinephrine. LÄS MER
5. Protein tyrosine kinases in insulin producing cells : Expression and putative importance for beta-cell function
Sammanfattning : Protein tyrosine kinases are of importance for cell replication and differentiation in manysystems. The mechanisms controlling the replication and differentiation of insulin producingcells are unknown. LÄS MER