RESUMO
The raw and processed roots of Plygonum multiflorum Thunb (PM) are used to treat different diseases in clinical practice. In order to clarify the influence of processing, a comparative study of chemical substance analysis was carried out. As the xenobiotics with a high enough exposure in target organs being considered as the potential effective or toxicity components, an in vivo study was also implemented to characterize the constitutes and metabolites, and meanwhile, the factor of compatibility with black bean were also considered. As a result, a total of 148 compounds were detected in PM extracts and more than 40 compounds were only detected in the processed products, which were probably new components produced during the steaming process. In in vivo study, 7 prototype components and 66 metabolites were detected or tentatively identified, 24 of which were reported for the first time. Our results indicated that processing greatly changed the chemical composition of PM and influenced the disposition of the compounds in vivo. To the best of our knowledge, this was the first global comparative study of raw and processed PM. These results expanded our knowledge about the influence of processing of PM and provided the essential data for further efficacy or toxicity studies.
Assuntos
Animais , Masculino , Ratos , Medicamentos de Ervas Chinesas , Química , Metabolismo , Preparações de Plantas , Química , Metabolismo , Raízes de Plantas , Química , Polygonum , Química , Ratos Sprague-Dawley , Análise EspectralRESUMO
The raw and processed roots of Plygonum multiflorum Thunb (PM) are used to treat different diseases in clinical practice. In order to clarify the influence of processing, a comparative study of chemical substance analysis was carried out. As the xenobiotics with a high enough exposure in target organs being considered as the potential effective or toxicity components, an in vivo study was also implemented to characterize the constitutes and metabolites, and meanwhile, the factor of compatibility with black bean were also considered. As a result, a total of 148 compounds were detected in PM extracts and more than 40 compounds were only detected in the processed products, which were probably new components produced during the steaming process. In in vivo study, 7 prototype components and 66 metabolites were detected or tentatively identified, 24 of which were reported for the first time. Our results indicated that processing greatly changed the chemical composition of PM and influenced the disposition of the compounds in vivo. To the best of our knowledge, this was the first global comparative study of raw and processed PM. These results expanded our knowledge about the influence of processing of PM and provided the essential data for further efficacy or toxicity studies.
Assuntos
Animais , Masculino , Ratos , Medicamentos de Ervas Chinesas , Química , Metabolismo , Preparações de Plantas , Química , Metabolismo , Raízes de Plantas , Química , Polygonum , Química , Ratos Sprague-Dawley , Análise EspectralRESUMO
A method for qualitative analysis of constituents in Panax notoginseng by UPLC-LTQ-Orbitrap mass spectrometry was established. Based on the high-resolution mass information, MS/MS fragmentation behaviors and chemical components from literatures, 43 compounds were identified or tentatively characterized. New type saponin aglycone, combined with malonyl-substituted and acetyl-substituted saponins were discovered and plausibly identified in this study. This work could be helpful for the quality control and further phytochemical studies of Panax notoginseng, and provided a good example for the analysis of chemical constituents in traditional Chinese medicine.
Assuntos
Cromatografia Líquida de Alta Pressão , Análise de Fourier , Ginsenosídeos , Panax notoginseng , Química , Raízes de Plantas , Química , Plantas Medicinais , Química , Controle de Qualidade , Saponinas , Classificação , Espectrometria de Massas em TandemRESUMO
Objective To understand the status of suicidal ideation and attitudes towards suicide among university students in Harbin as well as the influencing factors. Methods A multi-stage stratified random clustered sampling procedure was used to select university students(n=5240)who were aged 16-43 years, in Harbin. Factors associated with suicidal ideation were analyzed with logistic regression by demography characteristics and scores on the suicide acceptability scale and the social support rating scale(SSRS). Results According to our data, 9.1% of the respondents had suicidal ideation and 1% had made a suicide attempt. The influencing factors for suicidal ideation were gender, major, relationship between their parents, acceptance on thc idca of suicide attempt,the state of social support and the history of suicide attempt. Conclusion The suicidal ideation of university students in Harbin should not be neglected. Measures should be taken to improve the quality of mental health and to reduce the ratio of suicide behavior among college students.
RESUMO
To study the molecule recognition capability of corilagin-molecularly imprinted polymer (MIP) by the high performance liquid chromatography (HPLC), the molecularly imprinted polymer was synthesized by using corilagin as the template. Chromatographic performance of corilagin was investigated in different mobile phases. The MIP was investigated for the recognition of corilagin and its derivatives and other compounds in the same mobile phase. The MIP exhibited very high affinity for corilagin in the mobile phase of acetonitrile. The K' value will be reduced when the content of polar solvent increased in the mobile phase. The MIP has good selectivity in the mobile phase of acetonitrile-methanol (95:5), but it has no affinity for corilagin's derivatives. The corilagin-MIP has good selectivity for corilagin and it can be used in extracting corilagin and its analogs from herbs.