Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:dateCreated
2001-2-22
pubmed:abstractText
Type 2 diabetes is characterized by diminished or inappropriate secretion of insulin, which could be a defect of either islet cell function or beta-cell mass. Quantitation of islet cell populations in postmortem pancreas demonstrates little change of beta-cell mass in type 2 diabetes. Reduction of islet cell mass (up to 30%) is associated largely with islet amyloid deposition, and the degree of amyloidosis is independent of the duration of the disease. Insulin secretory capacity is dependent on both function and mass of cells. beta-Cell secretion is heterogeneous; increasing glucose concentrations result in recruitment of beta-cells into the secretory pool, indicating a large reserve of secretory capacity that can be recruited in insulin resistant conditions. The Starling curve of islet function describes the relationship of insulin secretion to increasing levels of insulin resistance and hyperglycemia in type 2 diabetes. Longitudinal studies in Macaca mulatta monkeys show that insulin resistance is accompanied by increased islet mass and onset of diabetes is associated with deposition of amyloid and reduction of beta-cells. Increasing the function of unresponsive beta-cells rather than the mass of cells may be a more effective therapeutic target for type 2 diabetes.
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
AIM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
Feb
pubmed:issn
0012-1797
pubmed:author
pubmed:issnType
Print
pubmed:volume
50 Suppl 1
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
S169-71
pubmed:dateRevised
2011-11-17
pubmed:meshHeading
pubmed:year
2001
pubmed:articleTitle
Decreased insulin secretion in type 2 diabetes: a problem of cellular mass or function?
pubmed:affiliation
Diabetes Research Laboratories, Oxford Centre for Diabetes, Endocrinology and Metabolism, Radcliffe Infirmary, UK. anne.clark@drl.ox.ac.uk
pubmed:publicationType
Journal Article, Research Support, Non-U.S. Gov't