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Related Concept Videos

GPCR Desensitization01:12

GPCR Desensitization

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G protein-coupled receptor (GPCR) signaling plays a crucial role in cell functioning. GPCR desensitization is an equally essential process. It allows cells to respond to changing environments and regain sensitivity to new stimuli while preventing unnecessary stimulation when no longer needed. Prolonged exposure to stimuli leads to GPCR desensitization. It involves blocking the receptors from binding and activating additional G proteins. This inhibits activation of downstream effectors, thereby...
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Hypersensitivities01:30

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Desensitization and Tachyphylaxis01:20

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Tachyphylaxis is described as a rapid decrease in response to a drug after repeated or continuous administration of the same drug dose. It is a phenomenon where the body becomes less responsive to a particular substance or intervention over time, requiring higher doses or stronger interventions to achieve the same effect. It results from adaptive changes in the body's receptors, signaling pathways, or physiological processes that occur in response to prolonged exposure to a stimulus.
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Specific Heat01:16

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The specific heat capacity of a substance refers to the energy required to increase the temperature of one gram of that substance by one degree Celcius. Specific heat capacity is often represented in calories (cal), grams (g), and degrees Celsius (oC), but can also be expressed in joules (J), kilograms (kg), and Kelvin (K), among other units.
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Rapidly Varying Flow01:24

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Rapidly varying flow (RVF) in open channels is characterized by abrupt changes in flow depth over a short distance, with the rate of depth change relative to distance often approaching unity. These flows are inherently complex due to their transient and multi-dimensional nature, making exact analysis difficult. However, approximate solutions using simplified models provide valuable insights into their behavior.Key Features of Rapidly Varying FlowRVF is commonly observed in scenarios involving...
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Density, Specific Weight, Specific Gravity and Compressibility of Fluid01:27

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Density, specific weight, specific gravity, and compressibility are fundamental properties of fluids. Density is the mass per unit volume, characterizing the mass of a fluid system. It influences buoyancy, pressure, flow dynamics, viscosity, thermal conductivity, and sound propagation. For instance, in pipeline design, accurate density measurements ensure that the pipeline can handle the fluid's mass.
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Related Experiment Video

Updated: Feb 5, 2026

Trans-vivo Delayed Type Hypersensitivity Assay for Antigen Specific Regulation
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Trans-vivo Delayed Type Hypersensitivity Assay for Antigen Specific Regulation

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Beyond Penicillin: Rapid Desensitization for Specific Flucloxacillin Hypersensitivity.

J C Kwong1, K Urbancic1,2,3, J A Trubiano4,5,3

  • 1Department of Infectious Diseases, Austin Health, Heidelberg, Victoria, Australia.

Antimicrobial Agents and Chemotherapy
|September 19, 2018
PubMed
Summary

Beta-lactam antibiotics improve outcomes for severe staphylococcal infections. A novel desensitization protocol enabled safe beta-lactam use in a patient with flucloxacillin hypersensitivity.

Keywords:
anaphylaxisantibiotic allergydesensitizationflucloxacillinhypersensitivitypenicillin allergy

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Area of Science:

  • Infectious Diseases
  • Clinical Pharmacology
  • Allergy and Immunology

Background:

  • Severe staphylococcal infections often necessitate beta-lactam antibiotic therapy.
  • Beta-lactam therapy is linked to better patient outcomes compared to non-beta-lactam alternatives.
  • Immediate hypersensitivity reactions to beta-lactams pose a significant challenge for treatment selection.

Observation:

  • Published desensitization protocols for antistaphylococcal beta-lactams like flucloxacillin are scarce.
  • A specific case of immediate hypersensitivity to flucloxacillin was identified.
  • Standard penicillin desensitization protocols carry a risk of adverse reactions in such cases.

Findings:

  • A successful desensitization protocol was developed and implemented for flucloxacillin.
  • This protocol allowed the patient to safely receive necessary beta-lactam therapy.
  • The protocol was tailored to address isolated flucloxacillin hypersensitivity.

Implications:

  • This case provides a valuable, specific protocol for flucloxacillin desensitization.
  • It expands treatment options for patients with staphylococcal infections and beta-lactam hypersensitivity.
  • Safe beta-lactam administration can be achieved even with immediate hypersensitivity.