相关实验视频
Updated: Jul 23, 2025

07:02
Assessment of Chemical Toxicity in Adult Drosophila Melanogaster
Published on: March 24, 2023
3.4K
在体内通过实际致命病例验证的difenidol化的法医毒动力学
Weifen Niu1,2,3, Tongxi Ren4, Yandan Wang1,2,3
1School of Forensic Medicine, Shanxi Medical University, Jinzhong, 030600, Shanxi, People's Republic of China.
Scientific reports
|July 11, 2023
概括
一种新的GC-MS方法准确地测量了生物样本中的二二醇. 证实了二醇的死后再分配 (PMR),影响了中毒病例的解释.
科学领域:
- 法医毒理学 法医毒理学
- 分析化学 分析化学
背景情况:
- 迪芬尼多尔化用于治疗头.
- 对生物标本的准确量化对于法医调查至关重要.
研究的目的:
- 开发和验证一种GC-MS方法来确定二二醇化物.
- 在动物模型中研究二二醇的毒动力学,死后再分配 (PMR) 和稳定性.
主要方法:
- 气色谱-质谱 (GC-MS) 用于药物定量.
- 毒动力学和PMR研究的动物模型.
- 在各种储存条件下进行稳定性测试.
主要成果:
- 开发的GC-MS方法显示了高回收率 (>90%),精度 (<10%RSD) 和低检测极限 (0.05μg/mL).
- 迪芬尼多尔显示出明显的死后再分配,随着时间的推移,其度在不同器官中变化.
- 在保存的血液样本中,Difenidol在长达两个月的时间内被发现是稳定的.
结论:
- 经过验证的GC-MS方法适用于二二醇化物的生物分析确定.
- 在对中毒病例的法医解释中,必须考虑二二醇的死后再分配.
- 稳定性数据支持生物标本中二尼醇分析的可靠性.
相关概念视频
Enhanced Elimination of Poison
545
Poison can be effectively removed from the gastrointestinal (GI) tract through various decontamination procedures.
Antidotes serve a crucial role in counteracting the effects of poison by inhibiting enzymes responsible for producing harmful drug metabolites. In some cases, these toxic metabolites can be neutralized by endogenous cosubstrates, which are maintained at specific concentrations to prevent interaction with cellular macromolecules and subsequent cell death.
Renal excretion is the...
Antidotes serve a crucial role in counteracting the effects of poison by inhibiting enzymes responsible for producing harmful drug metabolites. In some cases, these toxic metabolites can be neutralized by endogenous cosubstrates, which are maintained at specific concentrations to prevent interaction with cellular macromolecules and subsequent cell death.
Renal excretion is the...
545
Prevention of Further Absorption of Poison
858
In cases of acute poisoning, the primary objective is to prevent further absorption of the toxic substance into the body. Immediate interventions using various decontamination techniques targeting the gastrointestinal (GI) tract can achieve this. Decontamination is crucial to prevent poison from entering the systemic circulation, which involves washing affected areas with water and mild soap and removing contaminated clothing. Once external decontamination is done, attention must be turned to...
858
Nonlinear Pharmacokinetics: Dependence of Elimination Half-Life and Dose Clearance
206
The elimination half-life and drug clearance of drugs following nonlinear kinetics can vary with dosage. The Michaelis-Menten parameters and drug concentration influence these factors. As the dose increases, the elimination half-life tends to lengthen, resulting in a reduction in clearance and a disproportionately larger area under the curve. The total clearance can be derived from the Michaelis-Menten equation for drugs following a one-compartment model.
A study on guinea pigs examined the...
A study on guinea pigs examined the...
206
Drug Concentrations: Measurements
406
Drug concentration is the quantity of a drug present in a biological sample. Measuring drug amounts in biological samples allows the clinician to understand how a drug is absorbed, distributed, metabolized, and excreted. Samples can be obtained through invasive or non-invasive methods. Invasive techniques involve surgical or parenteral interventions to gather blood, cerebrospinal fluid, or tissue biopsy. Conversely, non-invasive approaches provide samples like urine, feces, and saliva.
Plasma...
Plasma...
406
Drug Regulation
1.4K
Drug regulation encompasses the management of drug usage by evaluating its safety and efficacy through assessments conducted by regulatory authorities. Regrettably, the history of drug regulation is marred by several catastrophic events. One such incident is the Elixir Sulfanilamide tragedy, in which the toxic compound diethyl glycol was included in a sweet-tasting medication, leading to numerous fatalities. This event prompted the enactment of the Food, Drug, and Cosmetic Act in 1938. Under...
1.4K

