Plasma Proteins
Plasma Proteins - Related Videos
11:32
Measuring Plasma Membrane Protein Endocytic Rates by Reversible Biotinylation
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Cited by 23 •
2009
Regulated endocytosis governs the cell surface expression levels of the majority of membrane proteins. Here we utilize reducible, membrane impermeant biotinylation reagents to measure the endocytic rate of the dopamine transporter (DAT), a polytopic membrane protein. The method facilitates a straightforward approach to measuring the endocytic rate of most plasma membrane proteins.
01:29
Drug Distribution: Plasma Protein Binding
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2023
Drugs predominantly attach to plasma proteins, with only a small percentage remaining unbound. The unbound portion can be calculated as one minus the bound fraction. Acidic drugs form large, inactive complexes by reversibly binding to plasma albumin, which prevents them from diffusing across biological barriers. These drug-protein complexes act as reservoirs for the drugs. As the concentration of unbound drugs decreases, these complexes quickly dissociate to release the free drug, maintaining...
01:20
Protein Buffers in Blood Plasma and Cells
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2024
The human body utilizes protein buffer systems to maintain a stable pH. These systems capitalize on the dual role of amino acids, which can act as acids or bases by accepting or releasing hydrogen ions in response to pH changes. Protein buffer systems are particularly significant in the extracellular fluid (ECF) and intracellular fluid (ICF) of active cells, where structural and functional proteins provide substantial buffering capacity. Certain amino acids can exist in a zwitterion state at a...
08:42
How to Ignite an Atmospheric Pressure Microwave Plasma Torch without Any Additional Igniters
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Cited by 26 •
2015
This movie shows how an atmospheric plasma torch can be ignited by microwaves with no additional igniters and provides a stable and continuous plasma operation suitable for plenty of applications.
08:36
An Atmospheric Pressure Plasma Setup to Investigate the Reactive Species Formation
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Cited by 20 •
2016
An experimental setup was created for the helium-operated kHz frequency plasma jet. The setup includes a cage for the plasma power supply and jet and an in-house built reactor to monitor plasma-induced reactive species without the interference of the ambient atmosphere.
FAQs
Albumin performs two complementary functions. It binds and carries molecules through the plasma, helping distribute substances in the circulation. At the same time, its presence contributes to colloid osmotic pressure, which helps maintain physiological fluid balance. Studying albumin therefore connects plasma transport capacity with mechanisms that support stable conditions within the blood.
Globulins and fibrinogen contribute to different biological processes. Immunoglobulins, a group of globulins, support adaptive immune defense by participating in targeted responses. Fibrinogen supports hemostasis when thrombin converts it into fibrin during clot formation. These contrasting roles show how plasma proteins participate in both protection against immune threats and control of bleeding.
The concentration and distribution of plasma proteins provide biological information beyond the presence of individual proteins. Their measured patterns can support investigation of nutrition, inflammation, liver function, kidney function, immune disorders, and blood coagulation. Because several physiological systems influence these protein groups, pattern-based analysis can help connect laboratory findings with broader biological processes.
Serum protein electrophoresis separates protein groups so that their distribution can be examined rather than treated as a single total measurement. The resulting pattern can reveal changes among plasma protein groups, including albumin and globulin-related fractions. In biology and clinical investigation, this separation provides a way to study altered protein profiles and support diagnostic assessment.
Measurement is useful when the investigation concerns processes linked to nutrition, inflammation, organ function, immunity, or coagulation. Researchers can examine concentrations and patterns to study how these systems relate to plasma protein status. Such measurements support the investigation of liver and kidney function, immune disorders, and blood-clotting biology, while also contributing to clinical diagnosis.
An altered pattern does not provide a complete conclusion by itself, but it can identify a finding that merits further biological or clinical investigation. Serum protein electrophoresis helps make these changes visible by separating protein groups. Interpreted alongside the study question, the pattern can aid examination of nutrition, inflammation, organ function, immune disorders, or coagulation.