What question did this study set out to answer?

To examine the effects of lithium preincubation on phosphoinositide metabolism and inositol phosphate turnover in basal and thrombin-stimulated platelets.

June 15, 1986Biochemical JournalOpen Access

The effects of lithium on platelet phosphoinositide metabolism

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Authors

EHEvelyn Mei HuangState University of New York TDThomas C. DetwilerOak Ridge National Laboratory

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Implication

In vitro study demonstrates that lithium alters phosphoinositide metabolism in thrombin-stimulated platelets, indicating enzymatic inhibition occurs too slowly to drive acute platelet activation.

Key Points

To examine the effects of lithium preincubation on phosphoinositide metabolism and inositol phosphate turnover in basal and thrombin-stimulated platelets.
Preincubated platelets for 90 minutes with 10 mM lithium ion (Li+).
Measured [32P]phosphate-labelled phosphoinositides alongside [3H]inositol-labelled inositol mono-, bis-, and tris-phosphate (InsP, InsP2, and InsP3) following thrombin stimulation.
Lithium induced a 1.8-fold increase in basal InsP radioactivity and enhanced thrombin-induced accumulation of InsP, InsP2, and InsP3 by 4-fold, 3-fold, and 2-fold, respectively.
InsP2 and InsP3 labelling returned to near-basal levels within 30 to 60 minutes, whereas elevated InsP labelling persisted past 60 minutes, consistent with lithium-mediated inhibition of InsP phosphatase.
Lithium treatment caused a thrombin-induced decrease in labelled phosphatidylinositol 4-phosphate (P < 0.05) and an enhanced increase in labelled lysophosphatidylinositol (P < 0.05).

Cite This Study

Huang et al. (1986) studied this question.

synapsesocial.com/papers/6a9140d7b167dec8df2e50b9 https://doi.org/10.1042/bj2360895

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Implication

In vitro study demonstrates that lithium alters phosphoinositide metabolism in thrombin-stimulated platelets, indicating enzymatic inhibition occurs too slowly to drive acute platelet activation.

The effects of lithium on platelet phosphoinositide metabolism

Discussion

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Implication

Key Points

Cite This Study

The effects of lithium on platelet phosphoinositide metabolism

Discussion

Member takes

Implication

Key Points

Cite This Study

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