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Imaging Studies for Cardiovascular System VI: Calcium -Scoring CT01:25

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Calcium-Scoring CT ScanA calcium-scoring CT scan, also known as coronary artery calcium (CAC) scan, detects calcium deposits in the coronary arteries. This test assesses the risk of coronary artery disease (CAD), which can lead to cardiovascular events such as angina, heart failure, and sudden cardiac arrest.A calcium-scoring CT scan is generally recommended for individuals at intermediate risk of CAD without symptoms. It includes:Men aged 40-75 and women aged 50-75: Especially those with a...
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Stanniocalcin2, A Promising New Target for Identifying Patients with Stroke/Ictus.

Nuria Bermejo1, José Javier López2, Alejandro Berna-Erro3

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Summary
This summary is machine-generated.

Stanniocalcin 2 (STC2) is reduced in platelets of stroke patients, indicating altered calcium homeostasis. STC2 levels increased with acetyl-salicylic acid treatment, suggesting STC2 as a potential stroke biomarker.

Keywords:
Ca2+ homeostasisSTC2strokethrombotic patients

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Area of Science:

  • Biochemistry
  • Hematology
  • Cardiovascular Research

Background:

  • Calcium (Ca2+) homeostasis is vital for platelet function and implicated in thrombotic disorders.
  • Reduced stanniocalcin 2 (STC2) expression is linked to prothrombotic conditions in diabetes mellitus type 2 (DM2).

Purpose of the Study:

  • To investigate the association between stanniocalcin (STC) expression and thrombotic events in humans.
  • To explore STC2 as a potential biomarker for stroke/ictus.

Main Methods:

  • Western blotting (WB) to determine STC expression.
  • Immunoprecipitation (IP) for protein interaction and phosphorylation analysis.
  • Analysis of STC2 expression in platelets of stroke patients and correlation with clinical data.

Main Results:

  • Stroke patients exhibited significantly reduced STC2 expression in platelets, particularly younger individuals.
  • Acetyl-salicylic acid (ASA) administration normalized STC2 expression in patients without recurrent thrombotic events.
  • Increased STC2 phosphorylation suggests enhanced STC2 activity in thrombotic patients.
  • Over-activated store-operated calcium entry (SOCE) and altered expression of non-capacitative calcium channels (Orai3, TRPC6) were observed in stroke patients.

Conclusions:

  • STC2 plays a role in regulating calcium homeostasis and platelet activation in thrombotic conditions.
  • Reduced STC2 expression and altered calcium channel activity are associated with stroke.
  • STC2 is a potential diagnostic marker for stroke/ictus in thrombotic patients.