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Related Concept Videos

Structure and Function of Platelets01:18

Structure and Function of Platelets

The cell fragments known as platelets are disc-shaped, with an average diameter of about 3 μm and a thickness of roughly 1 μm. They play a crucial role in the body's vascular clotting system, which also involves plasma proteins, blood cells, and blood vessel tissues.
Platelets are continually replenished, circulating in the bloodstream for 9-12 days before being removed by phagocytes, primarily in the spleen. A microliter of circulating blood contains between 150,000 and 450,000 platelets, with...
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The platelet phase, the second stage of hemostasis, commences around 15-20 seconds after an injury. It follows and overlaps with the vascular phase, during which blood vessels constrict to minimize blood loss.
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Depression: Overview01:18

Depression: Overview

Depression is a prevalent mental illness marked by persistent sadness and lack of interest in previously enjoyable activities. It can take several forms, including major depression, persistent depressive disorder, and bipolar I and II disorders. Symptoms range from emotional changes like chronic worry to physical changes like sleep disturbances and suicidal thoughts. From a neurobiological perspective, depression is believed to be triggered by abnormalities in the brain's prefrontal cortex,...
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G-protein coupled receptors are ligand binding receptors that indirectly affect changes in the cell. The actual receptor is a single polypeptide that transverses the cell membrane seven times creating intracellular and extracellular loops. The extracellular loops create a ligand specific pocket which binds to neurotransmitters or hormones. The intracellular loops holds onto the G-protein.
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Thromboembolic Disorders
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Microfluidics in Assessing Platelet Function
06:47

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Published on: November 8, 2024

Platelet function in patients with depression.

Kapil Parakh1, Ankit Sakhuja, Utsav Bhat

  • 1Department of Medicine, Johns Hopkins University School of Medicine, Johns Hopkins Bayview Medical Center, Baltimore, MD 21224-2780, USA.

Southern Medical Journal
|May 14, 2008
PubMed
Summary
This summary is machine-generated.

Depression elevates cardiovascular disease risk. While platelets are implicated, research on their function in depressed patients shows conflicting results, necessitating further study.

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Area of Science:

  • Cardiovascular Medicine
  • Neuroscience
  • Hematology

Background:

  • Depression is a known risk factor for cardiovascular disease (CVD) mortality.
  • Platelets and the central nervous system share similarities in serotonin pathways.
  • Platelets play a critical role in CVD pathogenesis.

Purpose of the Study:

  • To comprehensively review the evidence linking depression and platelet function.
  • To explore the potential role of platelets in the increased cardiovascular risk associated with depression.

Main Methods:

  • Literature review of studies investigating depression and platelet activation.
  • Analysis of findings regarding platelet function in patients with depression.

Main Results:

  • Evidence suggests a complex and inconsistent relationship between depression and platelet activation.
  • Some studies indicate heightened platelet activation in depression, while others report no association or even reduced activation.
  • Existing research lacks standardization in methods for assessing platelet function.

Conclusions:

  • The precise role of platelet function in the cardiovascular risks of depression remains unclear.
  • Further large-scale, well-designed studies using standardized methodologies are required to elucidate this relationship.