Heat-induced Aggregation
Heat-induced Aggregation - Related Videos
05:42
A Turbidimetric Analysis to Monitor Collagen-Induced Aggregation of Pretreated Human Platelets
0 Views •
2025
This video demonstrates turbidimetric analysis to assess collagen-induced platelet aggregation in pre-treated, washed human platelets. Control wells show collagen-induced aggregation, whereas a high concentration of inhibitors blocks Pannexin-1 channels, thereby inhibiting collagen-induced platelet aggregation, evident from unchanged turbidity.
04:03
Triggering and Monitoring Heat-Induced Seizures in a Transgenic Mouse Model
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2025
This video demonstrates the procedure to induce heat-induced seizures in a transgenic mouse with epilepsy-related gene mutations by gradually increasing body temperature in a controlled chamber. This protocol is used to study seizure mechanisms and potential therapies for epilepsy.
09:13
Turbidimetry on Human Washed Platelets: The Effect of the Pannexin1-inhibitor Brilliant Blue FCF on Collagen-induced Aggregation
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Cited by 5 •
2017
We describe a straightforward method for the isolation of washed platelets from human blood followed by agonist-induced platelet aggregation measurements by turbidimetry. As an example we apply this method for studying the aggregation response of human platelets to collagen after a pre-incubation with the Pannexin1 channel inhibitor Brilliant Blue FCF.
04:11
A FRET Flow Cytometry Technique to Detect Tau-Seed Induced Reporter Protein Aggregation
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2025
The video demonstrates a fluorescence resonance energy transfer (FRET) flow cytometry assay to detect the seeding activity of protein aggregates isolated from biological samples. Mammalian cells expressing tau reporter proteins are incubated with liposome transduction complexes containing tau seeds. These seeds mediate the aggregation of the reporter proteins, leading to generating a FRET positive signal in the flow cytometer.
08:35
Testing the Heat Transfer Efficiency of a Finned-tube Heat Exchanger
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2023
Source: Michael G. Benton and Kerry M. Dooley, Department of Chemical Engineering, Louisiana State University, Baton Rouge, LA Heat exchangers transfer heat from one fluid to another fluid. Multiple classes of heat exchangers exist to fill different needs. Some of the most common types are shell and tube exchangers and plate exchangers1. Shell and tube heat exchangers use a system of tubes through which fluid flows1. One set of tubes contains the liquid to be cooled or heated, while the second...
FAQs
Exposed hydrophobic regions promote intermolecular contacts because they are normally buried within the folded molecule. Heating disrupts stabilizing interactions, allowing partial unfolding to reveal these regions. Molecules can then associate through newly accessible surfaces, shifting from individually soluble forms toward larger assemblies. This molecular change helps explain why heating can reduce solubility and impair biological function.
Partial unfolding acts as an intermediate structural change rather than the final aggregate itself. As a protein loses some stabilizing interactions, previously hidden surfaces become available for contact with other molecules. Those intermolecular contacts can produce soluble oligomers or progress toward insoluble aggregates. Distinguishing these stages helps researchers connect structural disruption with later changes in solubility and activity.
Soluble oligomers are assemblies that remain dispersed in solution, whereas insoluble aggregates form larger assemblies with reduced solubility. Both can arise after heating exposes regions that favor intermolecular association, but they represent different physical outcomes. Monitoring this distinction can show whether thermal stress produces an early, soluble assembly or a more extensive aggregation state likely to disrupt protein behavior.
Aggregation can alter protein function by changing the molecule’s structural organization and reducing the amount that remains properly soluble. The resulting assemblies may no longer behave like the original functional molecules. In biological studies, this connection makes heat-induced aggregation useful for examining how thermal stress damages proteins and for relating structural changes to loss of function.
A heat-induced aggregation assay can help researchers assess how a protein responds to thermal stress by monitoring aggregation-associated changes such as reduced solubility or formation of larger assemblies. These observations provide a way to characterize protein stability and structural change. The same approach can also support evaluation of changes occurring during storage or processing.
Researchers can use aggregation measurements to compare how biomolecules respond to heating and identify preparations that better resist thermally driven structural disruption. Reduced formation of larger assemblies indicates a more favorable stability profile within the tested context. This information supports the development of thermostable biomolecules and helps guide efforts to preserve molecular behavior during handling or processing.
In biology, thermal stress can expose normally buried hydrophobic regions and promote protein association, creating assemblies that may disturb normal molecular behavior. Studying this response helps researchers characterize how cells respond to elevated temperature and examine how aggregation contributes to disease-related damage. The process therefore connects molecular changes in proteins with broader cellular and pathological consequences.
Aggregation studies reveal whether heating or related handling conditions cause proteins to lose solubility or form larger assemblies. Researchers can use that information to evaluate protein formulations and monitor structural changes during storage or processing. The resulting comparison helps identify conditions that better preserve the intended molecular state, although the assay specifically reports aggregation-related stability rather than every possible form of degradation.