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Showing result 1 - 5 of 224 swedish dissertations matching the above criteria.
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1. Myxine insulin : amino-acid sequence, three dimensional structure, biosynthesis, release, physiological role, receptor binding affinity, and biological activity
Abstract : The Atlantic hagfish, Myxlne. glutinosa,is the most primitive vertebrate extant, and it diverged from the main vertebrate evolutionary chain some 500 mi 11 ion years ago. READ MORE
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2. Mechanisms of insulin exocytosis and release
Abstract : Endocrine cells as well as neurons release their hormones and transmitters by regulated exocytosis. In the pancreatic B-cell, stimuli like glucose initiate biochemical and electrical processes that culminate in influx of Ca2+, which then triggers exocytosis of insulin-containing granules. READ MORE
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3. Pulsatile insulin release from single islets of Langerhans
Abstract : Insulin release from single islets of Langerhans is pulsatile. The secretory activities of the islets in the pancreas are coordinated resulting in plasma insulin oscillations. Nutrients amplitude-regulate the insulin pulses without influencing their frequency. READ MORE
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4. Transport and release of insulin granules during biphasic insulin secretion
Abstract : Glucose-evoked insulin secretion exhibits two phases: The first phase represents exocytosis of insulin granules situated at the plasma membrane, whereas the second phase reflects insulin release from granules continuously recruited to the plasma membrane. This thesis investigates different aspects of phasic insulin secretion, with the specific aims to elucidate the possible contribution of insulin granule transport, as well as to study the influence of the nucleotides cAMP and NADPH to this process. READ MORE
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5. Regulation of cytokine-induced nitric oxide production in insulin-producing cells
Abstract : Cytokine-induced expression of the inducible form of nitric oxide synthase (iNOS) and production of nitric oxide (NO) may contribute to pancreatic β-cell damage during the development of type 1 diabetes. iNOS catalyses the conversion of arginine into citrulline and NO, a reaction regulated by the amount of expressed iNOS enzyme and by the cellular availability of arginine. READ MORE