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Scholar Results 1 - 10 of about 41 citing MacDonald: Glucagon-like peptide-1 receptor activation antagonizes voltage-dependent repolarizing.... (0.11 sec) 

Epac: A new cAMP-binding protein in support of glucagon-like peptide-1 receptor- …

- diabetesjournals.org
GG Holz - Diabetes, 2004 - Am Diabetes Assoc
Recently published studies of islet cell function reveal unexpected features of glucagon-like
peptide-1 (GLP-1) receptor-mediated signal transduction in the pancreatic β-cell. Although
GLP-1 is established to be a cAMP-elevating agent, these studies demonstrate that ...
Cited by 127 - Related articles - BL Direct - All 6 versions

Voltage-dependent K+ channels in pancreatic beta cells: role, regulation and …

- bcell.org [PDF] 
PE MacDonald, MB Wheeler - Diabetologia, 2003 - Springer
Insulin secretion from pancreatic islet beta cells is acutely regulated by a complex interplay of
metabolic and electrogenic events. The electrogenic mechanism regulating insulin secretion
from beta cells is com- monly referred to as the ATP-sensitive K ... Keywords Channels, ...
Cited by 74 - Related articles - BL Direct - All 4 versions

GIP and GLP-1 as incretin hormones: lessons from single and double incretin …

- glucagon.com [PDF] 
T Hansotia, DJ Drucker - Regulatory peptides, 2005 - Elsevier
Glucose-dependent insulinotropic polypeptide (GIP) and glucagon-like peptide-1 (GLP-1) are
gut-derived incretins secreted in response to nutrient ingestion. Both incretins potentiate
glucose-dependent insulin secretion and enhance β-cell mass through regulation of ...
Cited by 48 - Related articles - All 5 versions

Reduction in Voltage-Gated K+ Currents in Primary Cultured Rat Pancreatic {beta}- …

- endojournals.org
DD Feng, Z Luo, S Roh, M Hernandez, N Tawadros, DJ … - Endocrinology, 2006 - Endocrine Soc
Free fatty acids (FFAs), in addition to glucose, have been shown to stimulate insulin release through
the G protein-coupled receptor (GPCR)40 receptor in pancreatic ß-cells. Intracellular free calcium
concentration ([Ca 2+ ] i ) in ß-cells is elevated by FFAs, although the mechanism ...
Cited by 41 - Related articles - BL Direct - All 5 versions

Glucagon-like peptide 1: evolution of an incretin into a treatment for diabetes

- physiology.org
DA D'Alessio, TP Vahl - American Journal of Physiology- …, 2004 - Am Physiological Soc
Glucagon-like peptide 1 (GLP-1) is a product of proglucagon that is secreted by specialized intestinal
endocrine cells after meals. GLP-1 is insulinotropic and plays a role in the incretin effect, the
augmented insulin response observed when glucose is absorbed through the gut. GLP-1 ...
Cited by 37 - Related articles - BL Direct - All 4 versions

Expression of voltage-gated potassium channels in human and rhesus pancreatic …


L Yan, DJ Figueroa, CP Austin, Y Liu, RM Bugianesi, … - Diabetes, 2004 - Am Diabetes Assoc
Voltage-gated potassium channels (Kv channels) are involved in repolarization of excitable
cells. In pancreatic β-cells, prolongation of the action potential by block of delayed rectifier potassium
channels would be expected to increase intracellular free calcium and to promote insulin ...
Cited by 37 - Related articles - BL Direct - All 4 versions

Antagonism of Rat {beta}-Cell Voltage-dependent K+ Currents by Exendin 4 …

- jbc.org
PE MacDonald, X Wang, F Xia, W El-kholy, ED … - Journal of Biological …, 2003 - ASBMB
Antagonism of voltage-dependent K + (Kv) currents in pancreatic -cells may contribute to the
ability of glucagon-like peptide-1 (GLP-1) to stimulate insulin secretion. The mechanism and
signaling pathway regulating these currents in rat -cells were investigated using the ...
Cited by 30 - Related articles - BL Direct - All 4 versions

Glucagon-like peptide-1: regulation of insulin secretion and therapeutic potential


J Gromada, B Brock, O Schmitz, P … - Basic & Clinical …, 2004 - interscience.wiley.com
Abstract: Glucagon-like peptide-1 (GLP-1) is an intestinally derived insulinotropic hormone currently
under investigation for use as a novel therapeutic agent in the treatment of type 2 diabetes. One
of several important effects of GLP-1 is on nutrient-induced pancreatic hormone release ...
Cited by 30 - Related articles - BL Direct - All 4 versions

Impact of incretin hormones on beta-cell function in subjects with normal or …

- physiology.org
E Muscelli, A Mari, A Natali, BD Astiarraga … - American Journal of …, 2006 - Am Physiological Soc
The mechanisms by which the enteroinsular axis influences -cell function have not been investigated
in detail. We performed oral and isoglycemic intravenous (IV) glucose administration in subjects
with normal (NGT; n = 11) or impaired glucose tolerance (IGT; n = 10), using C-peptide ...
Cited by 20 - Related articles - BL Direct - All 4 versions

Temperature and redox state dependence of native Kv2. 1 currents in rat …


PE MacDonald, AMF Salapatek, MB … - The Journal of …, 2003 - Physiological Soc
In pancreatic β-cells, voltage-dependent K + (Kv) channels repolarise glucose-stimulated action
potentials. Kv channels are therefore negative regulators of Ca 2+ entry and insulin
secretion. We have recently demonstrated that Kv2.1 mediates the majority of β-cell ...
Cited by 18 - Related articles - BL Direct - All 6 versions


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