Experimental Study on the Repair Effect of Xianlinggubao Capsule on Osteoporotic Vertebral Compression Fracture in Rabbits

[Objectives]To observe the effect of Xianlinggubao Capsule on osteoporotic vertebral compression fracture(OVCF)in rabbits and the influence mechanism of the repair of fractures.[Methods]Female June age 30 rabbits were randomly divided into control group,model control group and Xianlinggubao group.After bilateral ovariectomy,the model control group and Xianlinggubao group were injected with dexamethasone continuously for 4 weeks,and then the OVCF compound model was established by surgery.The Xianlinggubao group was treated with Xianlinggubao at a dose of 300 mg/(kg·d)for 60 d,while the blank control group and the model control group were treated with the same amount of normal saline for 60 d.The number of blood vessels and the expression of bone morphogenetic protein-2(BMP-2)were detected by immunohistochemical staining and the bone mineral density(BMD)in the callus of the third lumbar fracture area of rabbits was measured.The content of serum phosphorus(P),alkaline phosphatase(ALP)and total calcium(TCa)in rabbit venous blood were measured by automatic biochemical analyzer.The content of vascular endothelial growth factor(VEGF)and platelet-derived growth factor(PDGF)in rabbit venous blood were measured by ELISA kit.[Results]The number of blood vessels and the expression of BMP-2 in the callus of the third lumbar fracture area of rabbits was high in Xianlinggubao group,the content of serum P,ALP,TCa,VEGF and PDGF was obviously increased,BMD was obviously increased,the bone microstructure of the third lumbar vertebrae fracture area of rabbits was basically restored.Compared with the model control group(P<0.05),the difference was statistically significant.[Conclusions]Xianlinggubao Capsule can increase calcium and phosphorus deposition,promote the formation of blood vessels in the fracture area of OVCF in rabbits,and have a strong repair effect on OVCF in rabbits.

电纺制备聚酰亚胺/Fe_3O_4磁性纳米复合薄膜及其性能表征

以聚酰胺酸(PAA)为聚合物纺丝原料,通过静电纺丝法制备一系列Fe_3O_4添加量不同的PAA/Fe_3O_4纳米复合纤维膜,经亚胺化处理后得到聚酰亚胺(PI)/Fe_3O_4复合纤维膜。采用红外光谱、扫描电镜表征了纤维膜的微观形貌和结构,测试了纤维膜的热、力、电及磁性能,系统分析了Fe_3O_4含量及纺丝工艺对纤维膜结构和性能的影响。实验结果表明,PI/Fe_3O_4复合材料的红外谱图与纯PI膜基本一致,说明Fe_3O_4磁性纳米粒子的引入并未破坏PI分子的化学结构。当PI固含量为20%,Fe_3O_4质量分数为1%时,复合纤维膜珠节少,纤维成型良好且具有良好的热稳定性。随着Fe_3O_4含量的增加,Fe_3O_4在PI纤维中的团聚越来越严重,复合纤维膜的拉伸强度先增大后减小,断裂伸长率则逐渐减小。介电性能测试结果表明,PI/Fe_3O_4复合纤维膜的介电常数和介电损耗均小于PI膜且变化趋势平稳。Fe_3O_4的加入使PI/Fe_3O_4复合纤维膜具有明显的磁性,且随着Fe_3O_4含量的增加,其磁性逐渐增大。

Clinical Observation of Huatanjieyu Granule in the Treatment of Post-stroke Depression

[Objectives]To observe the clinical effect of Huatanjieyu granule on patients with post-stroke depression.[Methods]Total 76 patients with confirmed post-stroke depression were randomly divided into two groups(treatment group and control group)according to the double-blind principle.The treatment group(38 cases)was treated with Huatanjieyu granule combined with escitalopram,and the control group(38 cases)was treated with escitalopram alone.The course of treatment was 6 weeks.Through clinical efficacy,Hamilton Depression Scale(HAMD)and Treatment Emergent Symptom Scale(TESS)scores were compared,and blood,liver function,renal function and electrocardiogram were examined.[Results]The scores of HAMD and TESS in patients with post-stroke depression were significantly decreased by Huatanjieyu granule,and there were no obvious side effects.The total effective rate was 92.1%in the treatment group and 76.3%in the control group.There was significant difference between the two groups(P<0.01).[Conclusions]Huatanjieyu granule was effective in the treatment of post-stroke depression with little side effects and was easy to be accepted by patients.

The Characteristics of the Drug Composition in the Treatment of Insomnia by External Bath Prescription of Traditional Chinese Medicine

[Objectives]The research aimed to carry out a retrospective analysis on the characteristics of the drug composition in the treatment of insomnia by external bath prescription of traditional Chinese medicine,to provide ideas for the research and development of new Chinese medicine for insomnia.[Methods]The external bath prescriptions of traditional Chinese medicine related to insomnia were collected,and the appearance frequency of drug was analyzed,and statistical analysis of drug with high appearance frequency was conducted.[Results]In the external bath prescriptions of traditional Chinese medicine related to insomnia,the top ten herbs with high appearance frequency were as follows:Chaozaoren,Drgonsbones,Margaritifera,Yejiaoteng,Schisandrae Chinensis Fructus,Lilii Bulbus,Platycladi Semen,Poria,Coptidis Rhizoma,and Scutellariae Radix.According to the classification by efficacy,these herbs mostly have the effects of calming,nourishing and heat clearing.[Conclusions]Traditional Chinese medicine is most closely related to heart,kidney,liver and other viscera.Tranquilizing and sedative drugs should be chosen,which corresponds with the understanding on pathogenesis of insomnia in traditional Chinese medical science,and embodies the characteristics of external bath prescription of traditional Chinese medicine in the treatment of insomnia.

The analysis of microscopy imaging on liquid crystalline components of the cell nucleus

Dinoflagellates nuclei allow for liquid crystalline characterization without core histones. In this study, nuclei were isolated from the athecate Karenia dinoflagellate species with minimum destruction to their native structure during preparation procedures. The liquid crystalline nuclei were studied by microscopy techniques of Metripol birefringence microscopy, Confocal Laser Scanning Microscopy (CLSM) and synchrotron radiation-based hard X-ray Microscopy with computed tomography, respectively. The 3D reconstruction techniques of hard X-ray tomography and CLSM were also discussed. The important biophysical parameters of the interspaces between chromosomes, nuclear surface areas and chromosome-occupied volumes were calculated from a 3D rendering of a reconstructed nucleus. The results of calculated average chromosomal DNA concentration of dinoflagellate was consistent with the concentration which can spontaneously assemble into the cholesteric liquid crystal phase in vitro.

CA242围手术期变化模式及纵向轨迹与结直肠癌预后的关联:一项回顾性纵向队列研究

以往关于CA242的研究大多局限于术前水平,忽略了其围手术期变化模式和纵向轨迹.基于一项结直肠癌(CRC)患者的回顾性队列,本研究根据术前和术后CA242水平确定了围手术期CA242变化模式,利用随访期间CA242的重复测量识别了CA242纵向轨迹,并评估了其与CRC预后的关系.结果显示,围手术期CA242变化模式是CRC的独立预后因素.术后CA242持续升高患者的无复发生存率(RFS)低于术后CA242恢复正常的患者,且术后/术前CA242比值可进一步对这两组患者进行复发风险分层.轨迹分析发现,术后3年内CA242存在低稳定、早期上升和晚期上升三种纵向变化模式.纵向轨迹与RFS显著相关,且独立于术前和术后CA242.在CEA正常的患者中,CA242的围手术期变化模式和纵向轨迹与RFS之间仍然存在显著关联,表明在CEA基础上测量CA242有助于识别预后较差的高危CRC患者.基于本研究结果,建议对CRC患者进行CA242的常规术后随访.