GARD皮肤剂量反应测定及其在使用下一代风险评估 (NGRA) 框架进行香料的定量风险评估 (QRA) 中的应用
Shashikiran Donthamsetty1, Andy Forreryd2, Paul Sterchele1
1International Flavors & Fragrances, Hazlet, NJ, USA.
Regulatory toxicology and pharmacology : RTP
|March 9, 2024
概括
该GARDskin剂量反应测定准确预测人类对香料成分的敏感度水平. 这种新方法方法 (NAM) 通过可靠的定量风险评估 (QRA) 支持更安全的产品开发.
科学领域:
- 毒理学 毒理学 毒理学
- 皮肤敏感化 皮肤敏感化
- 在体外检测中进行检测.
背景情况:
- 新方法方法 (NAM) 对于皮肤敏感化的定量风险评估 (QRA) 是至关重要的.
- 香水行业优先考虑NAM来确定没有预期的敏感度诱导水平 (NESIL) 值.
- 经合组织已经采用了体外GARD皮肤测定 (TG 442E) 来识别皮肤敏感剂的危害.
研究的目的:
- 评估GARDskin剂量响应 (DR) 试验预测的精度和可重复性.
- 在下一代风险评估 (NGRA) 框架内评估GARDskin DR测定在香料QRA中的应用.
- 建立一种可靠的方法来推导香料成分的NESIL值.
主要方法:
- 使用了体外GARD皮肤试验,并修改了剂量反应测量协议.
- 应用线性回归模型来预测人类NESIL值.
- 使用NGRA框架对Isocyclocitral进行了QRA,以确定安全使用水平.
主要成果:
- 与已发表的数据相比,GARDskin DR测定在预测人类NESIL值方面表现出良好的一致性.
- 在三个独立的实验中,预测是可重现的.
- 使用NGRA框架的QRA成功确定了在各种消费产品中Isocyclocitral的安全使用水平.
结论:
- GARDskin DR测定是一种精确且可重复的方法,用于预测人类NESIL值.
- 这种测试支持在NGRA框架内确定香料材料的QRA的NESIL值.
- 这项研究推进了NAMs在化品和香水行业的强大皮肤敏感化风险评估中的使用.
关键词:
皮肤敏感化 皮肤敏感化香水材料是使用香水的材料.这是GARD测试.新方法方法论 (NAMs)下一代风险评估 (NGRA) 是指下一代风险评估.没有预期的敏感化诱导水平 (NESIL)经合组织 442E量化风险评估 (QRA) 是指进行量化风险评估.更多相关视频
06:21Diffuse Optical Spectroscopy for the Quantitative Assessment of Acute Ionizing Radiation Induced Skin Toxicity Using a Mouse Model
Published on: May 27, 2016
8.1K
06:25Author Spotlight: High-Throughput Toxicity Screening Using Zebrafish Embryo Startle Response Assay
Published on: January 12, 2024
1.4K
相关概念视频
Flail Chest-II
Managing flail chest, a condition characterized by a segment of the chest wall moving independently from the rest of the thoracic cage, requires a comprehensive approach. It includes a thorough assessment of the patient's condition, a diagnostic evaluation to determine the extent of the injury, and the implementation of appropriate medical interventions tailored to the individual's needs.
Assessment:
1. Clinical Evaluation:
History:
Assessment:
1. Clinical Evaluation:
History:
Spinal Cord Injury ll: Pathophysiology
Spinal cord injury progresses through two interconnected phases: primary injury and secondary injury.Primary InjuryPrimary injury happens at the moment of trauma and involves immediate mechanical damage to the spinal cord.Compression happens when broken vertebrae, herniated discs, or accumulating blood (such as a hematoma) press directly against the spinal cord, distorting its normal shape and function. In cases of contusion, the cord is bruised by a blunt force (like penetrating injuries or...
Secondary Spinal Cord Injury llI: Pathophysiology
Early Ischemia and Ionic ImbalanceWithin minutes of spinal cord injury, a secondary cascade begins, progressing over hours to weeks. Vascular damage reduces blood flow, causing ischemia and mitochondrial dysfunction. ATP depletion leads to ion pump failure, membrane depolarization, sodium influx, potassium efflux, and water accumulation, resulting in cellular swelling. Increased intracellular calcium further disrupts mitochondria and accelerates cellular injury.Excitotoxicity and Neuronal...
