Predicting chemically induced duodenal ulcer and adrenal necrosis with classification trees.

Predicting chemically induced duodenal ulcer and adrenal necrosis with classification trees.
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用分类树预测化学诱发的十二指肠溃疡和肾上腺坏死。

DOI:
10.1073/pnas.88.14.6298
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发表时间:
1991
影响因子:
11.1
通讯作者:
Szabo,S
Szabo,S
中科院分区:
综合性期刊1区
文献类型:
--
作者:
Giampaolo,C;Gray,AT;Olshen,RA;Szabo,S

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将二叉树结构的统计分类算法和56种模型烷基亲核试剂的性质应用于实验药理学和毒理学两个问题。745只学习样本中的每只大鼠被给予一种化合物并进行尸检以确定是否存在十二指肠溃疡或肾上腺出血性坏死。然后将引用的统计分类方案应用于这些结果和化合物的67个特征,以确定与生物活性相关的特征。对于预测十二指肠溃疡,偶极矩、熔点和辛醇中的溶解度尤为重要,而对于预测肾上腺坏死,重要的特征包括巯基和双键的数量。这些方法可能是一种廉价但有效的方法,可以筛选未经测试的化合物,以发现可能的器官特异性毒性。十二指肠和肾上腺病变的病因和发病机制被建议,作为药物设计的额外途径。
Binary tree-structured statistical classification algorithms and properties of 56 model alkyl nucleophiles were brought to bear on two problems of experimental pharmacology and toxicology. Each rat of a learning sample of 745 was administered one compound and autopsied to determine the presence of duodenal ulcer or adrenal hemorrhagic necrosis. The cited statistical classification schemes were then applied to these outcomes and 67 features of the compounds to ascertain those characteristics that are associated with biologic activity. For predicting duodenal ulceration, dipole moment, melting point, and solubility in octanol are particularly important, while for predicting adrenal necrosis, important features include the number of sulfhydryl groups and double bonds. These methods may constitute inexpensive but powerful ways to screen untested compounds for possible organ-specific toxicity. Mechanisms for the etiology and pathogenesis of the duodenal and adrenal lesions are suggested, as are additional avenues for drug design.
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