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Flow Cytometry01:23

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The development of flow cytometry techniques began in 1934 with initial attempts by Andrew Moldavan, a bacteriologist who counted the cells in a flowing capillary system. Moldavan pumped cells through a capillary tube focused under a microscope for visualization. The invention of photometry allowed the measurement of differentially-stained cells, and Louis Kamentsky developed the first multiparameter flow cytometer in 1965 to identify and count the cancer cells in cervical tissue specimens.
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Measurement of Bioavailability: Pharmacokinetic Methods01:30

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Pharmacokinetics is a vital branch of pharmacology that examines how drugs are absorbed, distributed, metabolized, and excreted by the body. Two key methodologies in pharmacokinetics are plasma drug concentration studies and urinary drug excretion analyses, both of which provide critical insights into a drug's therapeutic efficacy and bioavailability.Plasma Drug Concentration-Time StudiesPlasma drug concentration-time studies involve analyzing blood samples at specific intervals to quantify...
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Pharmacodynamic methods provide insights into a drug's effects on physiological processes over time and play a crucial role in understanding bioavailability and therapeutic efficacy. These methods can be broadly classified into acute pharmacological and therapeutic response approaches, each with distinct mechanisms and applications.The acute pharmacological response method directly correlates a drug's physiological effects, such as ECG or pupil diameter changes, to its time course in the body.
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Analysis of population pharmacokinetic data involves studying the behavior of drugs within diverse populations to understand their pharmacokinetic parameters. Traditional pharmacokinetic methods typically involve collecting samples from a few individuals and estimating these parameters. While these methods are commonly used, they have limitations in capturing the variability in drug response among individuals or heterogeneous populations. Population pharmacokinetics is employed to address these...
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Analyzing the Interaction of Fluorescent-Labeled Proteins with Artificial Phospholipid Microvesicles using Quantitative Flow Cytometry
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Flow cytometry and pharmacokinetics.

Kevin Lang1, Katie Matys1, Patrick Bennett1

  • 1Biomarker Laboratories, PPD, Richmond, VA 23230, USA.

Bioanalysis
|October 18, 2021
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Summary
This summary is machine-generated.

Multiparametric flow cytometry is key for analyzing cell therapies. This study details challenges in developing methods to track CAR-T cell kinetics, crucial for drug development.

Keywords:
CAR-T cellscell-based pharmacokineticscellular kineticsflow cytometry

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Area of Science:

  • Biotechnology
  • Immunology
  • Pharmacology

Background:

  • Multiparametric flow cytometry is vital for cellular analysis in drug development.
  • It's used in adoptive cell therapies for product evaluation and monitoring cellular kinetics post-infusion.

Purpose of the Study:

  • To discuss bioanalytical method development challenges for monitoring cellular kinetics in CAR-T cell therapies.

Main Methods:

  • Challenges discussed include procuring positive controls, flow cytometry panel design, determining the lower limit of quantification (LLOQ), assessing prestain sample stability, selecting staining reagents, and data analysis.

Main Results:

  • Specific challenges in method development for CAR-T cell kinetics monitoring were identified.

Conclusions:

  • Addressing these challenges is essential for reliable bioanalytical methods in CAR-T cell therapy development and application.