RESUMEN
To investigate chemical constituents contained in Skimmia arborescens. The chemical constituents were separated by silica gel column chromatography, pharmadex LH-20, RP-C18, and 1H, 13C-NMR spectroscopic analysis were employed for the structural elucidation. Six coumarin compounds were separated from S. arborescens. Their structures were elucidated as umbelliferone (1), scopoletin (2), scopolin (3), nodakenetin (4), skimmin (5), 6, 7-dimethoxycoumarin (6), and all compounds were separated from the plant for the first time. Using the model of ear swelling caused by xylol of mice, the anti-inflammatory effect of its total extract was evaluated. The result indicated that middle and high dose groups of its total extract could obviously inhibit the ear swelling caused by xylol of mice.
Asunto(s)
Animales , Femenino , Masculino , Ratones , Antiinflamatorios , Química , Farmacología , Cromatografía Líquida de Alta Presión , Cumarinas , Química , Farmacología , Oído , Patología , Medicina Tradicional China , Plantas Medicinales , Química , Rutaceae , Química , Gel de Sílice , Organismos Libres de Patógenos EspecíficosRESUMEN
Postweaning multisystemie wasting syndrome (PMWS) is an important swine disease that is closely associated with porcine circovirus type 2 (PCV2). The capsid protein (Cap protein) is a major structural protein that has at least three immunoreactive regions, and it can be a suitable candidate antigen for detecting the specific antibodies of a PCV2 infection. In the present study, an indirect enzyme-linked immunosorbent assay (TcELISA)based on a truncated soluble Cap protein produced in Escherichia coli (E.coli) was established and validated for the diagnostic PCV2 antibodies in swine. The TcELISA was validated by comparison with an indirect immunofluorescence assay (IIFA). The diagnostic sensitivity (DSN), specificity (DSP), and accuracy of the TcELISA were 88.6%, 90.7% and 89.4%, respectively. The agreement rate was 89.38% between results obtained with TcELISA and IIFA on 113 field sera. A cross-reactivity assay showed that the method was PCV2-specific by comparison with other sera of viral disease. Therefore ,the TcELISA will be helpful for the development of a reliable serology diagnostic test for large scale detection of PCV2 antibodies and for the evaluation of vaccine against PCV2 in swine.