Sökning: "islets"

Visar resultat 36 - 40 av 330 avhandlingar innehållade ordet islets.

1. 36. Somatostatin Receptor Expression and Biological Functions in Endocrine Pancreatic Cells

   Författare :Eva Ludvigsen; Stellan Sandler; Eva Tiensuu Janson; Mats Stridsberg; Frank Sundler; Uppsala universitet; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Cell biology; somatostatin; somatostatin receptors; somatostatin analogues; NOD mouse; type 1 diabetes; pancreatic islets; BON-1 cells; Cellbiologi; Cell biology; Cellbiologi;

   Sammanfattning : Type 1 diabetes is resulting from the selective destruction of insulin-producing beta-cells within the pancreatic islets. Somatostatin acts as an inhibitor of hormone secretion through specific receptors (sst1-5). LÄS MER

3. 37. Dissecting the role of micro-RNAs in diabetes

   Författare :Caroline Bolmeson; Create Health; []
   Nyckelord :MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; Type 1 diabetes; Type 2 diabetes; micro-RNA; Dicer; beta-cell function; insulin secretion; glucose; NOD mouse; Goto-Kakizaki rat; human islets; thymocytes; apoptosis;

   Sammanfattning : The role of miRNAs in pancreatic islets and β-cell function and in the development of diabetes in human and rodents have been investigated in this thesis. Dicer1 was specifically deleted in vivo in pancreatic β-cells under the RIP-promoter in mice. LÄS MER

4. 38. Estrogen and Serotonin – old dogs, new tricks, Implications for pancreatic beta-cell function

   Författare :Alexander Balhuizen; Celiaki och diabetes; []
   Nyckelord :MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; Diabetes; Estrogen; Serotonin; Pancreatic islets; Insulin resistance; Beta-cell function; GPCR;

   Sammanfattning : Islet hormone secretion is tightly regulated by metabolic status as well as local and circulating factors. These factors can activate different receptors on the pancreatic islet cells, for instance G-protein coupled receptors (GPCRs). LÄS MER

5. 39. Islet hormonal hypersecretion and metformin’s effect on islet hormonal secretion studied in vitro and in vivo

   Författare :Quan Wen; Anders Forslund; Hannes Manell; Hjalti Kristinsson; Lisa Juntti-Berggren; Uppsala universitet; []
   Nyckelord :MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; alpha cell; carboxypeptidase E; childhood obesity; DRP-1; free fatty acids; glucagon secretion; glucose metabolism; glucose stimulated insulin secretion; human islets; hyperinsulinemia; metformin; mitochondrial fission; oral glucose tolerance test OGTT ; prohormone convertase; proinsulin; proinsulin to insulin ratio PI:I ;

   Sammanfattning : Childhood obesity has surged globally. Elevated levels of free fatty acids contribute to hyperinsulinemia, hyperproinsulinemia, and hyperglucagonemia connected with both obesity and type 2 diabetes mellitus (T2DM). Metformin has beneficial effects on islets by influencing metabolism and reducing stress-induced cell death. LÄS MER

7. 40. Regulation of cytokine-induced nitric oxide production in insulin-producing cells

   Författare :Malin Flodström; Uppsala universitet; []
   Nyckelord :MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; Cell biology; Diabetes; pancreatic islets; insulin-producing cells; cytokines; nitric oxide; inducible nitric oxide synthase; nuclear factor-kappaB; interferon regulatory factor-1; arginine; citrulline; argininosuccinate synthetase; insulin release; Cellbiologi; Cell biology; Cellbiologi; medicinsk cellbiologi; Medical Cell Biology;

   Sammanfattning : 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. LÄS MER