To examine the effects of Momordica charantia (MC) and cinnamon on glucose uptake and adiponectin secretion (AS) fat cells, 3T3-L1 adipocytes were treated with a water extract of cinnamon (CE) and three concentrations of MC water and ethanol extracts. The treatment combination of 0.2 mg/ml MC water extract and 0.5 nM insulin was associated with an increased glucose uptake into the cells (61%) and increased AS from the cells (75%). Without insulin, 0.2 mg/ml of CE increased glucose uptake (100%) and completely inhibited AS from the cells. Sub-optimal concentrations of insulin did not further enhance the CE activity and, in combination with 50 nM insulin, a dose-dependent decrease in glucose uptake was observed. The present results indicate that preferentially water-soluble component(s) in MC enhance the glucose uptake action of sub-optimal concentrations of insulin in 3T3-L1 adipocytes. This effect is accompanied by and may be a result of increased AS. CE increases glucose uptake in these adipocytes but inhibits AS.
| Identifer | oai:union.ndltd.org:LACETR/oai:collectionscanada.gc.ca:QMM.98782 |
| Date | January 2006 |
| Creators | Roffey, Ben. |
| Publisher | McGill University |
| Source Sets | Library and Archives Canada ETDs Repository / Centre d'archives des thèses électroniques de Bibliothèque et Archives Canada |
| Language | English |
| Detected Language | English |
| Type | Electronic Thesis or Dissertation |
| Format | application/pdf |
| Coverage | Master of Science (School of Dietetics and Human Nutrition.) |
| Rights | © Ben Roffey, 2006 |
| Relation | alephsysno: 002487966, proquestno: AAIMR24783, Theses scanned by UMI/ProQuest. |
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