Insulinotropic activity of Tinospora crispa extract: effect on β-cell Ca2+ handling
The mechanism of insulinotropic action of Tinospora crispa was investigated in vitro using an insulin-secreting clonal β-cell line, HIT-T15. The aqueous extract sensitizes the β-cell to extracellular Ca2+ and promotes intracellular Ca2+ accumulation which in turn causes increased insulin release. Th...
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| Main Authors: | , |
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| Format: | Article |
| Language: | en |
| Published: |
Wiley
1998
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| Online Access: | http://psasir.upm.edu.my/id/eprint/115037/1/115037.pdf http://psasir.upm.edu.my/id/eprint/115037/ https://onlinelibrary.wiley.com/doi/10.1002/(SICI)1099-1573(199803)12:2%3C98::AID-PTR195%3E3.0.CO;2-F |
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| Summary: | The mechanism of insulinotropic action of Tinospora crispa was investigated in vitro using an insulin-secreting clonal β-cell line, HIT-T15. The aqueous extract sensitizes the β-cell to extracellular Ca2+ and promotes intracellular Ca2+ accumulation which in turn causes increased insulin release. The increase in cytosolic Ca2+ concentration is due to stimulation of Ca2+ uptake from the extracellular medium and inhibition of Ca2+ efflux from the cytosol. That the mechanism of insulinotropic action of T. crispa is physiological suggests that the insulin secretagogue/s present in the extract could indeed be a potential source of a specific oral hypoglycaemic agent for the treatment of non-insulin-dependent diabetes mellitus. |
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