Basophil Stimulation Buffer
Basophil Stimulation Buffer - Related Videos
05:37
Analyzing Basophil Activation in the Presence of a Test Allergen using Flow Cytometry
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2025
In this video, we demonstrate the test to evaluate basophil activation in the presence of a test allergen using flow cytometry.
10:22
Basophil Activation Test for Investigation of IgE-Mediated Mechanisms in Drug Hypersensitivity
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Cited by 14 •
2011
Basophil activation test is a potent tool for the detection of IgE-dependent allergies in vitro. Here, an optimized protocol for basophil activation test is used to investigate drug hypersensitivity. A method for the efficient production of covalent drug-protein conjugates and their physicochemical characterization is described.
02:56
Buffers
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2020
A solution containing appreciable amounts of a weak conjugate acid-base pair is called a buffer solution, or a buffer. Buffer solutions resist a change in pH when small amounts of a strong acid or a strong base are added. A solution of acetic acid and sodium acetate is an example of a buffer that consists of a weak acid and its salt: CH3COOH (aq) + CH3COONa (aq). An example of a buffer that consists of a weak base and its salt is a solution of ammonia and ammonium chloride: NH3 (aq) + NH4Cl...
04:35
Buffers - Concepts
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2020
Buffers When an Arrhenius acid (HA) is added to water, it dissociates into its conjugate base (A-) and a hydrogen cation (H+). HA + H2O → H+(aq) + A-(aq) The amount of hydrogen ions present in the solution determines the acidity of the solution, where more hydrogen ions indicate a lower or more acidic pH. Similarly, when a strong Arrhenius base (BOH) is added to water, it dissociates into its conjugate acid (B+) and a hydroxide ion (OH-). BOH + H2O → B+(aq) + OH-(aq) Generally, the addition of...
14:31
Buffers - Student Protocol
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2020
Source: Smaa Koraym at Johns Hopkins University, MD, USA Preparing 50 mM NaH2PO4 Buffer, pH 7Expand In the first part of this experiment, you will prepare a sodium phosphate solution buffered at pH 7.0. Monosodium phosphate is a weak acid with the conjugate base, disodium phosphate. Unadjusted monosodium phosphate solutions usually have a pH of about 4 - 6. Buffers are most effective close to their pKa, which is 6.8 to 7.2 for monosodium phosphate. So, you will use NaOH to push the...
FAQs
Its balanced chemical environment helps basophils remain viable while they encounter allergens or pharmacological compounds. Maintaining suitable cellular conditions is important because receptor-mediated signaling must remain functional for the cells to respond to a stimulus. This support allows researchers to assess activation under controlled conditions rather than responses altered primarily by unsuitable laboratory conditions.
Activation may be evaluated through measurable changes in basophil surface markers and mediator release. Surface-marker changes provide information about alterations at the cell membrane, while mediator release reflects functional cellular output after stimulation. Considering both types of readout can help characterize whether a test substance produces a detectable basophil response.
The two stimulus categories address different but related research questions. Allergens can be examined in relation to allergic responses, whereas pharmacological compounds can be assessed for stimulatory effects and possible drug hypersensitivity. Comparing responses across these substances helps investigators distinguish general basophil reactivity from effects associated with a particular compound or exposure context.
A typical workflow places basophils in the solution, exposes them to a selected test substance, and then assesses activation-related changes. The stimulus may be an allergen or pharmacological compound, depending on the experimental objective. Researchers can then compare surface-marker changes or mediator release across conditions to characterize cellular reactivity.
The essential components are viable basophils, Basophil Stimulation Buffer, and a defined test substance. The solution supplies the chemical environment needed during exposure, while the selected stimulus determines what response is being investigated. Keeping these elements controlled supports meaningful comparisons of compound effects, allergic responses, and receptor-mediated cellular signaling.
In pharmacology, basophil activation testing can support investigations of drug hypersensitivity, compound safety, and immune-cell reactivity. It also allows researchers to compare stimulatory effects among pharmacological substances. The resulting information may contribute to diagnostic strategy development and to the study of therapeutic approaches involving allergic or immune-mediated responses.