Microparticle Addition
Microparticle Addition - Related Videos
03:50
Isolation of Microparticles Derived from Apoptotic T Lymphocytes In Vitro
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2025
This video demonstrates the generation and isolation of T lymphocyte-derived microparticles, LMPs, from T lymphocytes following treatment with actinomycin-D.
09:26
Generation of Lymphocytic Microparticles and Detection of their Proapoptotic Effect on Airway Epithelial Cells
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Cited by 7 •
2015
Cell membrane–shed microparticles (MPs) are active biological vesicles that can be isolated and their pathophysiological effects investigated in various models. Here we describe a method for generating MPs derived from T lymphocytes (LMPs) and for demonstrating their proapoptotic effect on airway epithelial cells.
01:27
Conjugate Addition (1,4-Addition) vs Direct Addition (1,2-Addition)
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2025
α,β-Unsaturated carbonyl compounds with two electrophilic sites, the carbonyl carbon, and the β carbon, are susceptible to nucleophilic attack via two modes: conjugate or 1,4-addition and direct or 1,2-addition. Conjugate addition results in a thermodynamically stable product. The reaction retains the stronger C=O bond at the expense of the weaker C=C π bond. The process is slow as the β carbon is less electrophilic than the carbonyl carbon. Direct addition products are formed faster owing to...
12:22
Synthesis of Thermogelling Poly(N-isopropylacrylamide)-graft-chondroitin Sulfate Composites with Alginate Microparticles for Tissue Engineering
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Cited by 11 •
2016
An injectable tissue engineering scaffold composed of poly(N-isopropylacrylamide)-graft-chondroitin sulfate (PNIPAAm-g-CS)-containing alginate microparticles was prepared. The adhesive strength, swelling properties and in vitro biocompatibility are analyzed in this study. The characterization techniques developed here may be applicable to other thermogelling systems.
10:51
Customization of Aspergillus niger Morphology Through Addition of Talc Micro Particles
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Cited by 32 •
2012
A method to precisely generate and to comprehensively characterize morphology of filamentous fungus Aspergillus niger is described, which allows the mathematical correlation of morphological appearance and productivity.
FAQs
Particle composition, size, surface properties, and concentration are central experimental variables because they shape how cells encounter and process the particles. Changing composition can alter the material presented to the cell, while surface characteristics may affect receptor engagement. Size and concentration influence the extent of particle exposure. Comparing these variables helps distinguish particle-specific effects from responses caused by dose or physical presentation.
Direct contact can influence cells through interactions at the particle surface, including engagement of cellular receptors. A cell may also internalize the particle, creating a different route for sensing or processing. These mechanisms should be considered separately from effects caused by molecules released from the particle. Distinguishing them helps investigators connect an observed response to contact, uptake, or associated-molecule release.
Concentration determines how much particulate material is available for cell interaction and can therefore change the magnitude or character of a response. Because particle effects may depend on contact frequency as well as particle composition and size, concentration should be treated as an experimental variable rather than a fixed background condition. This is especially relevant when comparing leukocyte activation or phagocytosis.
A useful design links deliberately varied particle features with measurable cellular outcomes. Investigators can compare particles that differ in composition, size, surface properties, or concentration, then assess responses such as immune activation, inflammation, phagocytosis, or pathogen-host interaction. Interpreting these outcomes together helps identify which particle characteristics correlate with the response, rather than treating all microparticles as biologically equivalent.
Microparticles are useful when researchers need a controllable particulate signal to examine how leukocytes detect and respond to extracellular material. They can support studies of immune activation and phagocytosis, allowing the response to be considered in relation to particle composition, surface properties, and concentration. This makes the approach relevant to questions about how particulate cues contribute to inflammation.
In infection research, the method can help investigate pathogen-host interactions by presenting particulate materials to cells in a controllable format. It also provides a platform for delivering antigens or immune modulators, which can be used to examine resulting immune responses. These applications connect particle-cell mechanisms with inflammation and immune activation, while supporting evaluation of possible therapeutic strategies.