AIM: To study the absorption performance and purification process of total flavones from Bushen Recipe(Radix polygoni multiflori;Herba epimedii;Rhizoma drynariae;etc) with macroporous resin. METHODS: The contents of total flavones,icariin,tetrahydroxystilbene and naringin were worked as indexes,the adsorptive capacity of D101,DA201 and DM301 resins were investigated,and the static adsorption curve,dynamic leakage curve and elution curve were used for the selection of macroporous resin. RESULTS: The elution parameters of selected DM301 consisted of the 0.25 BV/h feed rate solution ratio of 4 BV water to elute resin and 4 BV 70% alcohol to be collected as elution solvent,and the elution rate of 2.4 BV/h was established. CONCLUSION: Macroporous resin method is a better candidate method for purifying flavones in Bushen Recipe.

OBJECTIVE: To investigate the clinical manifestation, pathological characteristics, treatment and prognosis of dendritic cell tumor. METHOD: Four cases of nasal and pharyngeal dendritic cell tumor were described, including two cases of follicular dendritic cell sarcoma (FDCS), one case of Langerhans cell histiocytosis (LCH) and one case of Langer hans cell sarcoma (LCS). One of the patients with FDCS received multimodality therapy (surgery combined with chemotherapy), and the other patient only received chemotherapy and radiotherapy. The patients with LCH or LSC were treated by surgery. RESULT: Of the two FDCS patients, one achieved complete remission after treatment by surgery combined with four cycles of CHOP chemotherapy regimen and concurrent radiotherapy (50 Gy), and the other who only received chemotherapy and radiotherapy survived with tumor for more than seven months of follow up. The patient of LCH was followed up for more than 2 years after surgery without recurrence or metastasis. The patient of LCS did not undergo radiotherapy or chemotherapy after surgery and died after 10 months of follow up. CONCLUSION Dendritic cell tumor is a group of very rare tumor and can be easily misdiagnosed in clinic, the confirmed diagnosis of which relies on histopathological features, immunohistochemistry combined with electron microscopy. FDCS, LCH and LCS have different pathological features, immunophenotypes and prognosis.
Child ; Child, Preschool ; Dendritic Cell Sarcoma, Follicular ; pathology ; therapy ; Female ; Follow-Up Studies ; Humans ; Male ; Middle Aged ; Nasopharyngeal Neoplasms ; pathology ; therapy ; Prognosis