RESUMEN
A method of comprehensive chemical pattern recognition of Atractylodis Rhizoma was established by GC-MS fingerprint, principal component analysis, cluster analysis and discriminant analysis. A DB-wax column (0.25 mm x 60 m, 0.25 microm) with El ion source and 70 V electron multiplier were used for GC-MS analysis. Using principal component analysis, cluster analysis, and discriminant analysis, 15 common peaks of sample fingerprints for chemical pattern recognition research were analysed. The same results were obtained from the fingerprint, principal component analysis and cluster analysis, which could use to distinguish genuine Atractylodes lancea, ungenuine A. lancea and A. chinensis. Thus, this method could be used for the quality control and comprehensive evaluation of Atractylodis Rhizoma.
Asunto(s)
Atractylodes , Química , China , Análisis Discriminante , Medicamentos Herbarios Chinos , Química , Cromatografía de Gases y Espectrometría de Masas , Métodos , Control de Calidad , Rizoma , QuímicaRESUMEN
<p><b>OBJECTIVE</b>To study the application of mesh and hernia ring for tension-free hernia repair in inguinal hernioplasty in patients with different ages.</p><p><b>METHODS</b>A total of 190 patients with inguinal hernia undergoing tension-free hernia repair were divided into two groups with age above and below 60 years, and the surgical effect and complications were compared.</p><p><b>RESULTS</b>Tension-free hernia repair with mesh and hernia ring was superior to conventional hernia repair in terms of operative time, mean time for exercise and pain in patients above 60 years, but not in patients below 60 years.</p><p><b>CONCLUSION</b>Surgical repair of inguinal hernia should be performed with individualized surgical plans.</p>