Abstract
An acidic toxic extract from the sea urchin T. pileolus inhibited time-dependent 45Ca2+ uptake in chick P2 fraction (IC50 about 10 ng/ml). This toxic extract is susceptible to trypsin. The inhibitory effect probably relate to Na+/Ca2+ exchanger.
MeSH terms
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Animals
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Brain Chemistry / drug effects*
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Calcium / metabolism*
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Calcium Radioisotopes
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Chickens / metabolism*
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Chromatography, Ion Exchange
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Hydrolysis
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In Vitro Techniques
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Kinetics
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Marine Toxins / chemistry
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Marine Toxins / pharmacology*
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Protein Denaturation
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Sea Urchins / chemistry*
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Tissue Extracts / chemistry
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Tissue Extracts / pharmacology*
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Trypsin
Substances
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Calcium Radioisotopes
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Marine Toxins
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Tissue Extracts
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Trypsin
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Calcium