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Related Experiment Videos

Nutritional zinc increases platelet reactivity.

G Marx1, J Krugliak, M Shaklai

  • 1Magen David Adom (MDA) Blood Services, Quality Control Program, Tel Hashomer, Israel.

American Journal of Hematology
|November 1, 1991
PubMed
Summary
This summary is machine-generated.

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Nutritional zinc intake significantly enhances platelet aggregation responses to various agonists. This finding highlights zinc

Area of Science:

  • Biochemistry
  • Hematology
  • Nutrition Science

Background:

  • Platelet aggregation is crucial for hemostasis.
  • Nutritional factors can influence platelet function.
  • The impact of acute zinc intake on platelet reactivity is not well-established.

Purpose of the Study:

  • To investigate the effect of a single oral dose of zinc sulfate on platelet aggregation.
  • To determine the time course of zinc absorption and its correlation with platelet responsiveness.

Main Methods:

  • Healthy volunteers ingested 220 mg of zinc sulfate.
  • Platelet-rich plasma (PRP) aggregation was measured using various agonists (thrombin, ADP, epinephrine, collagen, PAF) at 0, 1, and 3 hours post-ingestion.
  • Plasma zinc levels were analyzed using atomic absorption analysis.

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Main Results:

  • Plasma zinc levels increased significantly within 3 hours.
  • Platelet aggregation responses to multiple agonists, including thrombin and platelet aggregating factor (PAF), showed significant improvement.
  • No significant changes were observed in controls or individuals with Glanzmann thrombasthenia.

Conclusions:

  • A single bolus of nutritional zinc intake can rapidly enhance platelet reactivity.
  • Nutritional zinc availability is relevant to hemostasis.
  • Findings may have implications for platelet concentrate viability in blood banks.