LC-MS methods for remdesivir and GS-441524 in plasma for COVID-19.

| Posted in: Science

Journal name: World Journal of Pharmaceutical Research
Original article title: Development and validation of liquid chromatography, mass spectrometer methods for determination of remdesivir and its metabolite gs- 441524 in plasma and their application in covid-19 related clinical studies
The WJPR includes peer-reviewed publications such as scientific research papers, reports, review articles, company news, thesis reports and case studies in areas of Biology, Pharmaceutical industries and Chemical technology while incorporating ancient fields of knowledge such combining Ayurveda with scientific data.
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Original source:

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Author:

J. N. Suresh Kumar, M. Keerthana, N. Varsha, P. Asha, T. Shanthi Kumari, P. Vijay Babu and B. Satya Prasad


World Journal of Pharmaceutical Research:

(An ISO 9001:2015 Certified International Journal)

Full text available for: Development and validation of liquid chromatography, mass spectrometer methods for determination of remdesivir and its metabolite gs- 441524 in plasma and their application in covid-19 related clinical studies

Source type: An International Peer Reviewed Journal for Pharmaceutical and Medical and Scientific Research

Doi: 10.20959/wjpr20224-23628

Copyright (license): WJPR: All rights reserved


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Summary of article contents:

Introduction

The research article discusses the development and validation of a liquid chromatography-mass spectrometry (LC-MS) method for the quantification of remdesivir and its active metabolite, GS-441524, in plasma. Remdesivir, a broad-spectrum antiviral drug, has shown potential in treating COVID-19, particularly as it rapidly converts into GS-441524 within the body. The study emphasizes the method's application in clinical settings, with a detailed validation process that assures accuracy and reliability of results, essential for understanding the pharmacokinetics of the drug and its metabolites in patients suffering from COVID-19.

Stability of Remdesivir and Its Metabolite

One critical aspect highlighted in the study is the stability of remdesivir and its metabolite, GS-441524, in human plasma samples. Since remdesivir is a prodrug that converts into GS-441524, the researchers investigated its stability in various conditions, including different storage methods and sample treatments. The addition of formic acid (FA) to plasma samples was crucial in stabilizing these compounds, preventing hydrolysis, and reducing the potential overestimation of GS-441524 concentrations, especially after drug administration. This finding underscores the importance of sample handling in the quantification process.

Analytical Method Validation

Another significant concept presented is the thorough validation of the LC-MS method according to regulatory standards. The study meticulously assessed parameters like linearity, accuracy, precision, selectivity, and recovery to ensure the method's reliability. Calibration curves were constructed to determine concentration ranges, with acceptable correlation coefficients established for the method's performance. This rigorous validation process not only confirms the method's accuracy for clinical applications but also facilitates further studies on the safety and efficacy of remdesivir in treating COVID-19.

Clinical Applications and Results

The practical application of the validated method in clinical studies is another focal area of the research. The analysis of numerous plasma samples demonstrated the method's effectiveness in evaluating remdesivir and GS-441524 concentrations in patients with COVID-19. Results indicated distinct pharmacokinetic profiles for both remdesivir and its metabolite, with GS-441524 exhibiting a longer half-life, which is crucial for understanding the drug's therapeutic effects. These findings are significant as they contribute valuable data to the ongoing exploration of remdesivir as a viable treatment option against COVID-19.

Conclusion

In conclusion, the study successfully established an LC-MS bioanalytical method for quantifying remdesivir and GS-441524 in human plasma, highlighting its importance in the context of COVID-19. The method's validation process ensured high accuracy and reliability, ultimately allowing for effective monitoring of drug levels in patients. Given the ongoing clinical trials and regulatory approvals for remdesivir, the research contributes significantly to the understanding of its pharmacokinetics and therapeutic potential in managing COVID-19, solidifying its role in current treatment protocols.

FAQ section (important questions/answers):

What is the primary focus of the study by Kumar et al.?

The study develops and validates a method for the determination of remdesivir and its metabolite GS-441524 in plasma using liquid chromatography coupled with mass spectrometry.

What is remdesivir and its significance in COVID-19 treatment?

Remdesivir is a broad-spectrum antiviral prodrug that shows activity against RNA viruses, including SARS-CoV-2, the virus causing COVID-19. It is currently under evaluation for efficacy in treating COVID-19.

How were the analytical methods validated in the study?

Validation involved assessing precision, accuracy, sensitivity, selectivity, and stability, adhering to FDA and EMA guidelines to ensure reliable quantification of remdesivir and GS-441524 in human plasma.

What challenges were addressed in the method validation?

The study addressed challenges like analyte instability, carryover issues, and the differences in polarity between remdesivir and its metabolites to ensure accurate measurements.

What was the result of the clinical application of these methods?

The validated method was successfully applied in multiple clinical studies, aiding in regulatory submissions that led to the approval of remdesivir for COVID-19 treatment in various regions.

What role does formic acid play in this study?

Formic acid was used to stabilize plasma samples, preventing hydrolysis of remdesivir, which ensured accurate quantification of both remdesivir and its metabolite GS-441524 during analysis.

Glossary definitions and references:

Scientific and Ayurvedic Glossary list for “LC-MS methods for remdesivir and GS-441524 in plasma for COVID-19.”. This list explains important keywords that occur in this article and links it to the glossary for a better understanding of that concept in the context of Ayurveda and other topics.

1) Kumar:
Kumar is a prominent author in the context of the study, specifically in the development and validation of analytical methods for measuring remdesivir and its metabolite, showcasing their expertise in pharmaceutical analysis relevant to COVID-19 treatment. Their work contributes to understanding drug efficacy and safety in clinical applications.

2) Blood:
Blood is a crucial biological fluid in the study, as the research involves analyzing plasma samples derived from human blood. The findings directly relate to how remdesivir and GS-441524 behave within the bloodstream, impacting therapeutic effects and pharmacokinetics in patients suffering from COVID-19.

3) Study (Studying):
The term study refers to systematic investigations or experiments conducted to assess the method for quantifying remdesivir and its active metabolites. It provides evidence-based insights into the drug's effectiveness and helps guide clinical trials, ensuring that data gathered is robust and reproducible.

4) Drug:
Drugs refer to the category of pharmaceuticals being studied, notably remdesivir and its metabolites. The development of effective drugs is central to medical advancements, especially in response to diseases like COVID-19, highlighting the ongoing need for research in pharmacology.

5) Viru:
Viru relates to viruses in general and specifically refers to the action against viral infections. The study is centered on an antiviral drug, remdesivir, designed to combat SARS-CoV-2, the virus responsible for COVID-19, thus contributing to public health by exploring effective treatment options.

6) Life:
Life represents the core human aspect of the research, emphasizing the importance of developing effective medications such as remdesivir to mitigate health risks associated with viral infections like COVID-19. Enhancing life quality through medical advancements is a primary goal of pharmaceutical research.

7) Calculation:
Calculation is significant as it pertains to the quantitative assessment of drug concentrations within plasma samples. Accurate calculations ensure that measurement techniques maintain precision and accuracy, which is vital for evaluating drug pharmacokinetics and establishing therapeutic guidelines in clinical settings.

8) Performance:
Performance refers to how well the developed analytical method functions in terms of precision, accuracy, and reliability when measuring remdesivir and its metabolites. High performance is essential for regulatory compliance and successful clinical applications, providing confidence in the data generated from studies.

9) Activity:
Activity relates to the pharmacological effects of remdesivir as an antiviral drug. The study aims to quantify the drug's activity in the bloodstream and its effectiveness against COVID-19, contributing valuable data to understanding how these medications work in treating infections.

10) Water:
Waters is a reference to the company that provides specialized equipment and reagents used in analytical chemistry. The high-performance liquid chromatography equipment they manufacture is essential for the successful analysis of drug concentrations, which is a focal point of the study.

11) Science (Scientific):
Science emphasizes the systematic study of the natural world, including the biological effects of drugs like remdesivir. In this context, the focus is on how scientific principles guide the development of analytical techniques used to evaluate drug efficacy in clinical research.

12) Quality:
Quality underscores the importance of ensuring that the methods developed for measuring drug concentrations meet stringent standards for accuracy and precision. High-quality analytical methods are vital for regulatory submissions and for establishing trust in the data produced for public health implications.

13) Human life:
Human life signifies the focus of the study on developing treatments that can save and enhance lives by combating COVID-19 and similar infectious diseases. The ultimate goal of pharmaceutical research is to improve healthcare outcomes and quality of life for individuals affected by such conditions.

14) Accumulation (Accumulating, Accumulate):
Accumulated signifies the total amounts of drug or metabolite present in the body after administration. Understanding how concentrations accumulate helps inform dosing schedules and optimize therapeutic effects, particularly in patients with varying physiological responses to remdesivir treatment.

15) Measurement:
Measurement is essential in the study as it involves quantifying the concentrations of remdesivir and GS-441524 in plasma. Accurate measurements are necessary for establishing pharmacokinetics, ensuring that clinical studies provide reliable data on drug behavior and effectiveness in treating COVID-19.

16) Developing:
Developing refers to the ongoing process of refining and establishing methods for accurately measuring drug concentrations. This aspect is crucial in ensuring that the analytical techniques used are robust and can reliably support clinical studies intended for regulatory approval.

17) Medicine:
Medicine relates to the application of scientific knowledge for disease treatment. The study focuses on remdesivir, a novel antiviral medicine, emphasizing its potential as a therapeutic option in combating viral infections, thereby improving treatment outcomes for patients with COVID-19.

18) Relative:
Relative pertains to comparing the concentrations of remdesivir and its metabolites concerning effectiveness and safety. Understanding relative concentrations helps assess the drug's efficacy in therapeutic contexts, particularly in a clinical setting where precision in treatment is vital.

19) Santhi (Shamthi):
Shanthi is one of the contributing authors in the study, indicating collaboration among researchers in the pharmaceutical science field. Author collaboration is vital for pooling expertise and perspectives, leading to comprehensive research outcomes that enhance the understanding of drug performance.

20) Disease:
Disease signifies the pathological state targeted by the drug remdesivir, specifically COVID-19. The investigation is driven by the urgent need to address and manage disease outbreaks, enabling scientists and healthcare professionals to develop effective treatment strategies.

21) Kumari:
Kumari is another author contributing to the study, showing the collaborative effort in research. Collaborative authorship in scientific literature reflects the interdisciplinary nature of modern research, wherein diverse expertise is crucial for thorough investigation and understanding of complex medical issues.

22) Medium:
Medium refers to the substance in which measurements and reactions occur, particularly in the preparation of samples for analysis. In this study, the choice of medium impacts the accuracy of analytical results, demonstrating the need for careful selection of experimental conditions.

23) Satya (Shatya):
Satya is mentioned as one of the authors in the research work, contributing to the collaborative nature of the study. The inclusion of diverse researchers helps ensure comprehensive investigation and validation of methods applied in understanding drug interactions with biological systems.

24) Noise:
Noise relates to the background interference affecting the precision of analytical measurements. Reducing noise is crucial for enhancing the signal-to-noise ratio, ensuring that the quantification of remdesivir and its metabolites remains accurate and reliable for clinical application.

25) Asha (Asa):
Asha is noted as one of the co-authors of the study, contributing to the interdisciplinary team focused on pharmaceutical analyses. The collaborative nature of such research enriches the findings and enhances the credibility of the proposed methodologies.

26) Babu:
Babu is another author of the article, indicating involvement in the research team. The presence of multiple authors suggests a diverse range of expertise and perspectives, crucial for tackling the complexities of drug analysis in pandemic settings.

27) Food:
Food, while not directly related to the core subject, can signify the broader context of health and pharmaceuticals. The study reflects how materials, including those derived from food supplies, might influence pharmacokinetics and drug metabolism, especially in clinical settings.

28) Sang:
Sang might relate to references concerning blood or plasma analysis, hinting at biological components vital for understanding drug behavior. This illustrates the importance of biological samples in evaluating drug efficacy and safety within the context of healthcare and research.

29) Pari:
Pari may refer to contextual aspects or subjects within the study or related research. Specific details about 'Pari' are not provided in the original text but denote the importance of organization and team dynamics in scientific inquiry.

30) Post:
Post signifies the period following drug administration, which is critical for observing pharmacokinetic profiles. Understanding post-administration effects informs clinicians about drug behavior, necessary for effective treatment strategies and monitoring patient outcomes.

Other Science Concepts:

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Discover the significance of concepts within the article: ‘LC-MS methods for remdesivir and GS-441524 in plasma for COVID-19.’. Further sources in the context of Science might help you critically compare this page with similair documents:

Quality Control, Clinical studies, Remdesivir, Clinical application, Internal standard, Multiple reaction monitoring, Calibration curve, Plasma concentration, Liquid chromatography, Sample processing, Pharmacokinetic and pharmacodynamic.

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