Correlation between absorption rates of beta-adrenoreceptor antagonists in rat small intestine and their molecular structures / 浙江大学学报·医学版
Journal of Zhejiang University. Medical sciences
;
(6): 177-180, 2005.
Artigo
em Chinês
| WPRIM
| ID: wpr-353223
ABSTRACT
<p><b>OBJECTIVE</b>To study the correlation between the absorption rate constants of beta-adrenoreceptor antagonists in rat small intestinal segments and their molecular structural parameters.</p><p><b>METHODS</b>The net atomic charges and the molecular volumes of 11 beta-adrenoreceptor antagonists were obtained with the semiempirical self-consistent field molecular orbital calculation CNDO/2 method and Mont Carlo method respectively, using the minimum energy conformation obtained from the optimization of the standard molecular geometry with the molecular mechanics MM+ method. The stepwise multiple regression analysis was used to obtain the correlation equations.</p><p><b>RESULTS</b>The absorption rate constants of beta-adrenoreceptor antagonists in rat jejunum or ileum were well linearly correlated with the sum of the net charges of all hydrogen atoms and the molecular volumes. The beta-adrenoreceptor antagonist with higher lipophilicity, weaker hydrogen-bonding potential,and smaller molecular volume had greater absorption rate constants.</p><p><b>CONCLUSION</b>The absorption rate constants of beta-adrenoreceptor antagonists in rat small intestinal segments are mainly related with their lipophilicity,hydrogen-bonding potential and molecular size.</p>
Texto completo:
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Índice:
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Assunto principal:
Propranolol
/
Nadolol
/
Farmacocinética
/
Estrutura Molecular
/
Química
/
Análise de Regressão
/
Antagonistas Adrenérgicos beta
/
Absorção Intestinal
/
Intestino Delgado
/
Metabolismo
Tipo de estudo:
Estudo diagnóstico
Limite:
Animais
Idioma:
Chinês
Revista:
Journal of Zhejiang University. Medical sciences
Ano de publicação:
2005
Tipo de documento:
Artigo
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