在与氨酸相关的随机对照试验中的试验废物
Hongrui Chen1, Qinqi Yu2, Zening Huang3
1Department of Plastic & Reconstructive Surgery, Shanghai Ninth People's Hospital, Shanghai Ninth People's Hospital, Affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai, China.
Journal of oral rehabilitation
|November 1, 2024
概括
试验废弃物 (TW) 显著影响氨酸 (HA) 研究,73.3%的分析HA随机对照试验 (RCT) 显示TW. 早期注册和缺乏多重盲目是研究效率低下的关键风险因素.
科学领域:
- 医学研究方法论医学研究方法论.
- 临床试验分析临床试验分析
- 氨酸的应用 氨酸的应用
背景情况:
- 试验废物 (TW) 在将与氨酸 (HA) 相关的随机对照试验 (RCT) 的研究结果转化为临床实践方面存在重大挑战.
- 在HA-RCT中TW的程度以前没有得到量化.
研究的目的:
- 量化与氨酸 (HA) 相关的随机对照试验 (RCT) 中试验浪费 (TW) 的程度.
- 确定可能在HA-RCTs中保护或促进TW的因素.
主要方法:
- 在2024年7月,对HA相关的RCT进行了临床试验数据库的系统搜索.
- 通过PubMed和Scopus评估出版状况,并使用CONSORT检查清单评估报告的充分性.
- 基于偏差风险和参考系统审查来确定TW指标,分析了设计局限性.
主要成果:
- 在包括的184个HA-RCT中,73.3% (96项研究) 呈现TW特征.
- 技术工作的关键指标包括未发表的研究 (53个RCT),报告不足 (47个RCT) 和设计限制 (19个RCT).
- 对TW的独立风险因素被确定为2014年之前的注册和开放标签或单盲设计.
结论:
- 大多数分析的HA-RCT表明试验浪费,突出了研究行为的低效率.
- 了解已识别的TW指标可以为未来HA-RCT的更合理,更有效的设计和执行提供信息.
- 解决注册时间和盲目的协议等因素对于优化HA研究结果至关重要.
相关概念视频
Acid Halides to Alcohols: LiAlH4 Reduction
Acid halides are reduced to alcohols in the presence of a strong reducing agent like lithium aluminum hydride.
The mechanism proceeds in three steps. First, the nucleophilic hydride ion attacks the carbonyl carbon of the acid halide to form a tetrahedral intermediate. Next, the carbonyl group is re-formed, and the halide ion departs as a leaving group, generating an aldehyde. A second nucleophilic attack by the hydride yields an alkoxide ion, which, upon protonation, gives a primary alcohol as...
The mechanism proceeds in three steps. First, the nucleophilic hydride ion attacks the carbonyl carbon of the acid halide to form a tetrahedral intermediate. Next, the carbonyl group is re-formed, and the halide ion departs as a leaving group, generating an aldehyde. A second nucleophilic attack by the hydride yields an alkoxide ion, which, upon protonation, gives a primary alcohol as...
Toxicity Testing in Animals
Toxicity tests in animals are grounded on two main assumptions: first, the effects observed in laboratory animals can be extrapolated to humans, especially when adjusted for body surface area; second, high-dose exposure in animals is essential to identify potential human hazards from lower doses. This is based on the quantal dose-response concept, which faces the challenge of extrapolating results from relatively few test animals to much larger human populations. For example, a 0.01% incidence...
Production of Organic Acids
Lactic acid, an important organic acid extensively applied in food, pharmaceutical, and biodegradable polymer industries, is primarily produced via microbial fermentation. This method is favored over chemical synthesis due to its environmental sustainability and capacity for enantiomerically pure product formation. Among various microbial processes, the fermentation of starch-based substrates stands out due to the abundance and renewability of raw materials like corn and potatoes.Hydrolysis of...


