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Review Article

Microparticles and cardiovascular diseases

ORCID Icon, ORCID Icon &
Pages 193-223 | Received 05 Jan 2019, Accepted 15 Apr 2019, Published online: 17 Jun 2019

Figures & data

Figure 1. Extracellular vesicles. (1): Production of microparticles after stimulation of paternal cell. Microparticles are released from activated cell after outwards rearrangement of the cellular membrane. (2): Production of microparticles during apoptotic process. Microparticles are released before the formation of apoptotic bodies. (3): Endosomes in multivesicular body. After exocytosis of the endosomes into the extracellular environment may be called exosomes.

Figure 1. Extracellular vesicles. (1): Production of microparticles after stimulation of paternal cell. Microparticles are released from activated cell after outwards rearrangement of the cellular membrane. (2): Production of microparticles during apoptotic process. Microparticles are released before the formation of apoptotic bodies. (3): Endosomes in multivesicular body. After exocytosis of the endosomes into the extracellular environment may be called exosomes.

Figure 2. Mechanisms involved in the generation of the microparticles. (1): After activation of the cell an increased Ca+2 influx follows. (2): Externalisation of phosphatidylserine mediated by ATP-dependent floppases, scramblases and membrane pores. (3): Cytoskeleton Protein reconfiguration in order to produce outward membrane blebs. Capsases, caplains and Rho kinases are involved in the process.

Figure 2. Mechanisms involved in the generation of the microparticles. (1): After activation of the cell an increased Ca+2 influx follows. (2): Externalisation of phosphatidylserine mediated by ATP-dependent floppases, scramblases and membrane pores. (3): Cytoskeleton Protein reconfiguration in order to produce outward membrane blebs. Capsases, caplains and Rho kinases are involved in the process.

Table 1. Stimuli causing generation of microparticles in vitro or in vivo [Citation20,Citation21].

Figure 3. Microparticle content. External surface of plasma membrane in general contains negatively charged phosphatidylserine along with membrane proteins like major histocompatibility complex molecules, integrins and tissue factor. In the cytosol, there is no organised nucleus but apart from cytoskeleton proteins and enzymes, nucleic acid remnants (DNA or RNA) are present.

Figure 3. Microparticle content. External surface of plasma membrane in general contains negatively charged phosphatidylserine along with membrane proteins like major histocompatibility complex molecules, integrins and tissue factor. In the cytosol, there is no organised nucleus but apart from cytoskeleton proteins and enzymes, nucleic acid remnants (DNA or RNA) are present.

Table 2. Main antigen markers used for MP cell origin determination.

Table 3. Bioactive molecules of microparticles.

Figure 4. Mechanisms and molecules related with Microparticle induced coagulation. Abbreviations: PS: phospatildylserine; GLA: γ-carboxyglutamic acid; clotting proteins factors VII, IX, X and prothrombin. Negatively charged PS electrostatically attract the positively charged segment of clotting proteins/GLA complex and induce thrombogenesis. Tissue factor may also activate the coagulation cascade via the FVII/VIIa complex. Additionally, inhibition of fibrinolysis by microparticle membrane proteins such as plasminogen activator inhibitor-1 and protein S may augment thrombogenesis.

Figure 4. Mechanisms and molecules related with Microparticle induced coagulation. Abbreviations: PS: phospatildylserine; GLA: γ-carboxyglutamic acid; clotting proteins factors VII, IX, X and prothrombin. Negatively charged PS electrostatically attract the positively charged segment of clotting proteins/GLA complex and induce thrombogenesis. Tissue factor may also activate the coagulation cascade via the FVII/VIIa complex. Additionally, inhibition of fibrinolysis by microparticle membrane proteins such as plasminogen activator inhibitor-1 and protein S may augment thrombogenesis.

Table 4. Inflammation and microparticles (MPs).

Table 5. Angiogenesis and microparticles (MPs).

Table 6. Studies with microparticles (MPs) in diabetic populations or high glucose concentration conditions.

Table 7. List of medications induced reduction of microparticle (MP) levels in diabetic populations.

Figure 5. Mechanisms associated with initiation and progression of atherosclerosis mediated by Microparticles (MPs).

Figure 5. Mechanisms associated with initiation and progression of atherosclerosis mediated by Microparticles (MPs).

Table 8. Studies with microparticles (MPs) in acute coronary syndrome populations (ACS).

Table 9. Studies with microparticles (MPs) in heart failure.

Table 10. Studies where microparticle levels are associated with outcomes.

Figure 6. Cardiovascular diseases and microparticles. Flow chart which summarises the role of microparticles in the genesis (related with several risk factors) and manifestation of cardiovascular diseases. Utilisation as biomarkers to assess disease activity/severity, prognosis and treatment guidance is emerging as detection and enumeration methods for microparticles are improving.

Figure 6. Cardiovascular diseases and microparticles. Flow chart which summarises the role of microparticles in the genesis (related with several risk factors) and manifestation of cardiovascular diseases. Utilisation as biomarkers to assess disease activity/severity, prognosis and treatment guidance is emerging as detection and enumeration methods for microparticles are improving.

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