Objective To optimize and verify an in vitro detection method for bioactivity of recombinant human bone morphogenetic protein-2(rhBMP-2)based on ASTM F2131-02 standard test.Methods Based on the method established by the American Society for Testing Material(ASTM),the detection cell lines(W-20-17 and C2C12 cells),dilution mode of rhBMP-2(2 and 3 times serial dilution),culture time(24,36,48 and 72 h),and freezing temperature(-20 and-80 ℃)were optimized,and the specificity,intermediate precision,linearity and durability of the optimized method were verified. The specific activity of rhBMP-2 from different manufacturers was detected using the optimized method.Results C2C12 cells were determined as detection cells;The best dilution method of rhBMP-2 was 2 times series dilution;The optimum cell culture timewas 48handtheoptimum freezingtemperatureofcellswas-80℃. C2C12 cells responded specifically to rhBMP-2 induction when adding heteroprotein(bovine serum albumin)to rhBMP-2;The CV of 12 detections by 2 experimenters at 2 time points was11. 7%. The theoretical titer of rhBMP-2 showed a good linear relationship with the measured titer in the range of 70%-142%,and the fitting linear regression equation was:y = 0. 983 1 x-0. 010 3,R~2= 0. 996 4;The CV of the detected specific of rhBMP-2 using 4,11 and 21 passages of C2C12 cells was 5. 2%. The CV of specific activity of rhBMP-2 samples from different manufacturers detected by the optimized method repeatedly for two times was 1. 3%-7. 5%.Conclusion The optimized method showed good specificity,intermediate precision,linearity and durability,and might be used to detect the bioactivity of rhBMP-2 in vitro,which provided a reliable analytical method for its research,production and application.

The first step of bacilli culture is inoculation bacteria on culture medium. Designing a device to increase efficiency of inoculation is significative. The new device is controlled by SCM. The stepper motor can drive the culture medium rotating, accelerating, decelerating, overturn and suspending. The device is high practicability and efficient, let inoculation easy for operator.
Bacteriological Techniques ; instrumentation ; Equipment Design ; Software Design

Intraperitoneal. injection of the essential oils of Asarum himalaicum and A. heterotropides var. mand shuricum can inhibit the proliferation of granuloma induced by implantation of cotton pellets in rats, and change the distribution of Copper and Zinc,the two necessary trace elements for rats,in rat serum and liver.They reduce concentration of Zinc but increase that of Copper in the serum,while elevate the concentration of Zinc but reduce that of Copper in liver. The oil of A. himalaicum collected from Ningxia Region showed even stronger effects.

A lot of progresses in understanding of the production and effects of NO have been made in recent years. Large number of studies showed that NO play an important role in the pathogenesis of septic shock. Some other investigators reported that NOS inhibitors could have the potential therapeutic value in septic shock treatment.

[Objective] Have a research on therapeutic methods of phlegm syndrome of Li Ziyi in Qing dynasty, to sum up his therapeutic experience of such syndrome.[Methods]Analysis on the related states and cases on the base of researches on the contents of “Approaches of phlegmatic scrofula ”which was written by Mr. Li, elaborating his characteristics in treating such syndrome. [Results] Mr. Li considered that phlegm syndrome can be classified into milder phlegm and scrofula according to its level of the patient ’s condition and therapeutic effect. He also believed that several aspects should be taken into consideration through the therapeutic process:treat by internal combing with external treatment ,pay attention to seven emotions and smoothen the temper, emphasize nursing care and obey to the contraindication strictly. [Conclusion]There are features in Mr. Li ’s view on phlegm and his treating method of phlegm syndrome. His treating method has a good therapeutic effect and it is worth popularizing.

At present, selective 5-hydroxytryptamine (5-HT) reuptake inhibitors (SSRIs) and 5-HT and noradrenaline (NA) re-uptake inhibitors ( SNaRI) are the first choice for the clinical treatment of depression, however, the clinical adverse effects of the drugs have become a prominent problem affecting the clinical efficacy. Chinese medicines have some experience in the treatment of depres-sion, and the combined use with the above antidepressants can enhance the efficacy and / or reduce the adverse effects. The article re-viewed the status of the combination of SSRIs and Chinese medicines in order to provide reference for the clinical treatment of depres-sion.

Ceramide (Cer),as the center molecular of sphingolipids metabolism,functions as a bioactive mediator of different cellular processes,such as cell growth,differentiation,senescence and apoptosis,besides being structural component of cellular membrane.It can inhibit cell proliferation and promote cell apoptosis via multiple signal pathawys.Chemicals anti-cancer properties based on Cer metabolism that upregulate its level are confirmed in plenty of experimental researches,and parts of research productions are applied in anticancer clinic experiments.

Objective To observe the effect of four-handed technique in light cured resin veneer in the treatment of dental fluorosis. Methods Eighty outpatients with dental fluorosis in our hospital from January 2011 to January 2014 were randomly divided into two groups: 40 in the study group were treated with four-handed technique and another 40 in the control group with one-doctor manual operation. The two groups were compared in terms of treatment duration and curative effect. Result The treatment duration in the study was significantly shorter than that of the control group and the curative effect was significantly better than that of the control group (all P<0.05). Conclusion As for the light cured resin veneer in the treatment of patients with dentalfluorosis in the process , the four-handed technique is better than one-doctor manual operation.

[Objective]To discuss the diagnosis and surgical treatment of spinal myeloma.[Method]To make a retrospective analysis of cliniacal history and operation results of 13 patients with spinal myeloma from 1999 to 2004.There were 5 males and 8 females with average age of 47.67 years.They were diagnosed by X-ray,CT,MRI,ECT and biopsy.Resection of tumor was performed in all cases,of which 7 cases was through anterior approach,4 cases through posterior approach,2 cases through combined approach.[Result]The pain was decreased and neurological function was improved in all cases after the surgery.Three death and one recurrence was found during the follow-up time.[Conclusion]X-ray,CT and MRI are essential for diagnosis,ECT may help found multiple lesions,biopsy is reliable diagnosable method.Surgery can relived the symptoms obviously,but should be associated with adjuvant treatments.

[Objective]To approach the clinical characteristic,diagnosis and method of treatment of malignant fibrous histiocytoma of bone.[Method]The clinical data of 52 patients of malignant fibrous histiocytoma of bone were analyzed retrospectively,including sites of tumor,preoperative imageology,puncturing biopsy,surgical staging of tumor,methods of treatment,results of follow-up,and so on.[Result]In all 52 cases of malignant fibrous bistiocytoma of bone,32 cases were in periphery of knee joint,14 cases in periphery of shoulder joint,3 cases in the proximal femur,1 case in calcaneus,1 case in lumbar and 1 case in ilium.The preoperative imageelogy and puncturing biopsy were made as usual.There were 20 cases in staging of ⅡA and 32 cases in in staging of ⅡB according to Ennekings surgical staging of tumor.All cases were performed operation except of 1 case.The operation were made salvage limb mosfly and the ratio of limb salvage was 74.5 %(38/51).The preoperative and postoperative chemotherapy and radiotherapy were performed at the same time.Thirty-six of all cases were in long-time follow-up and the ratio of follow-up was 69.2%(36/52).Nine cases were recurred in the region,6 cases had distant metastasis and survival rate of 5 years was 61.1%(22/36).[Conclusion]Preoperative puncturing biopsy and imageology can help the diagnosis of malignant fibrous histiocytoma of bone.Surgery is the primary method and radiotherapy and chemotherapy can prevent the recurrence of the tumor.The resection of the tumor thorough is the key point of healing of malignant fibrous histiocytoma of bone.