尼托胺艾姆斯数据审查和方法开发:美国FDA/HESI研讨会的记录
Aisar Atrakchi1, Raechel Puglisi2, Joel Bercu3
1US Food and Drug Administration/Center for Drug Evaluation and Research, Silver Spring, MD 20993.
Mutagenesis
|February 14, 2026
概括
对药物中N-尼托拉胺 (NA) 突变致病性的担忧导致了一场研讨会,优化艾姆斯测试. 关键的结论集中在改善NA杂质检测和药品安全风险评估上.
科学领域:
- 制药化学 制药化学 制药化学
- 毒理学 毒理学 毒理学
- 遗传学 是一个遗传学.
背景情况:
- 氨酸 (N-nitrosamines,简称NAs) 是一种具有变种和致癌潜力的化合物.
- 与药物物质相关的不洁物 (N-nitrosamine Drug Substance-Related Impurities,NDSRI) 是制药品质量控制的一个重要问题.
- 艾姆斯试验是评估突变性的一种标准方法,但其对NA的敏感性需要优化.
研究的目的:
- 讨论和确定最佳的Ames测试条件来评估N-尼托拉胺和NDSRI.
- 解决有关Ames测试在预测NAs致癌潜力的敏感性方面的担忧.
- 巩固关于尼托胺检测的联合研讨会的发现和建议.
主要方法:
- 一个由美国FDA/CDER和HESI/GTTC联合组织的研讨会.
- 数据的介绍和关于NA检测的Ames测试参数的小组讨论.
- 对代谢激活和测试菌株选择方法的审查.
主要成果:
- 确定了从研讨会会议中获取的关键教训.
- 研讨会的重点是改善NAs的Ames测试的性能和可靠性.
- 讨论的目的是提高阿梅斯测试对NA致癌性的预测价值.
结论:
- 优化Ames测试条件对于准确的NA和NDSRI检测至关重要.
- 需要改进的方法来解决阿梅斯测试对NA的敏感性限制.
- 研讨会为监管和行业对尼托胺安全性评估的方法提供了宝贵的见解.
相关概念视频
Review and Preview
8.4K
In statistics, several tools are used to interpret the data. Measures of central tendency represent the characteristics of the data, such as mean, median, and mode. Additionally, measures of variance like standard deviation and range are used to find the spread of data from the mean. Relative standing measures the distance between data locations. Commonly used measures of relative standings are percentile, z score, and quartiles.
Percentiles are a type of fractile that partition data into...
Percentiles are a type of fractile that partition data into...
8.4K
Review and Preview
11.6K
Data are individual items of information obtained from a population or sample. Data may be classified as qualitative (categorical), quantitative continuous, or quantitative discrete. Because it is not practical to measure the entire population in a study, researchers use samples to represent the population. A random sample is a representative group from the population chosen by using a method that gives each individual in the population an equal chance of being included in the sample. Random...
11.6K
Development of Analytical Methods
2.4K
An analytical methodology can be divided into four sequential steps: technique, method, procedure, and protocol. A technique is a scientific principle that rationalizes a specific phenomenon through chemical measurements. Adapting a technique for analyzing a sample of interest is termed a method. The procedure outlines the directions for performing the analysis via an analytical method. The protocol is the detailed guidelines on the procedure, which should be strictly followed to obtain the...
2.4K
FDA Approved Drugs: Changes to Approved Drugs
279
Post-approval, manufacturers may modify an approved new or generic drug product. Such modifications can encompass alterations in the Active Pharmaceutical Ingredient (API), manufacturing process, formulation, batch size, manufacturing site, and container closure system (FDA Guidance for Industry, April 2004). Often, a drug product may undergo multiple changes.These modifications require careful evaluation to determine their potential impact on the drug product's identity, strength, quality,...
279
Statistical Methods for Analyzing Epidemiological Data
997
Epidemiological data primarily involves information on specific populations' occurrence, distribution, and determinants of health and diseases. This data is crucial for understanding disease patterns and impacts, aiding public health decision-making and disease prevention strategies. The analysis of epidemiological data employs various statistical methods to interpret health-related data effectively. Here are some commonly used methods:
997
2° Amines to N-Nitrosamines: Reaction with NaNO2
5.5K
Secondary amines react with nitrous acid to form N-nitrosamines, as depicted in Figure 1. Nitrous acid, a weak and unstable acid, is formed in situ from an aqueous solution of sodium nitrite and strong acids, such as hydrochloric acid or sulfuric acid, in cold conditions. In the presence of an acid, the nitrous acid gets protonated. The subsequent loss of water results in the formation of the electrophile known as nitrosonium ion.
5.5K


