Objective To investigate the efficacy of MSCs infused intravenously on the regeneration of injured spinal cord and rehabilitation of its neurological function. Methods 32 SD rats, male or female, weight about 300 g for each one. MSCs were separated, cultured and purified in vitro. Surface marker of MSCs, such as CD34, CD45, CD29 and CD90 were detected by flow cytometry. The rat spinal cord injury model was prepared according to the modified Allen method. After exposure of T10 spinal cord, the T10 segment of spinal cord was injuried by a 10 g weight falling down from 5 cm high place upon a round thin copper pad which was placed on the surface of T10 segment of spinal cord. The diameter of the copper pad is 3 mm. There are 24 rats in the injuried group and 8 in the non-injuried group. The injuried group was then divided into experiment group with 14 rats and control group with 10 rats at 24 hours after preparation of models. The rats in the injuried group and non-injuried group were infused with MSCs marked by Brdu through tail vein, and the rats in control group were infused with PBS. The neurological functions of rats were evaluated at 24 hours after injury and 1, 3, 5 weeks post-infusion respectively. At the same time, the immigration, survival and differentiation of MSCs were observed. Results The MSCs were uniformly CD29, CD90 positive and CD34, CD45 negative. In vivo experiment, transplanted MSCs survived and were localized to the injured spinal cord, and a few cells expressed NSE, MAP2 post transplantation 3 to 5 weeks. Significant improvement in functional outcome in rats treated with MSCs transplantation compared to control rats. The score of BBB in the treated group was higher than that in the control group (P

Objective To evaluate the effects of temperature of the irrigation fluid on body temperature and cardiovascular performance during transurethral surgery. Methods 87 cases were randomly divided into two groups according to the temperature of irrigation fluid used: the ambient (21～ 24 ℃) and the isothermic (35～36 ℃). Body temperature, blood glucose, ECG, HR, SaO 2, cardiac output (CO), mean arterial pressure (MAP) and systemic vascular resistance (SVR) were monitored during the transurethral surgery. Results Body temperature was decreased 2.1 ℃, MAP elevated, CO decreased and SVR increased in the ambient group, while body temperature was decreased only 0.3 ℃ and cardiac performance was maintained relatively stable in the isothermic group. Conclusions Hypothermia, resulted from the use of large amount of low temperature irrigation fluid during transurethral surgery has detrimental effects on body temperature and cardiovascular performance. Isothermic irrigation fluid would stablize the cardiovascular performance and so increases the safety of transurethral surgery.

Objective To investigate the plasma total tau(T-tau)and phosphorylated protein tau(P-tau)protein in the diagnosis of Alzheimer's disease(AD).Methods 22 352 medical patients aged over 60 years in Beichen Area Community Service Center were involved in this survey.Random sampling principle was used for screening.Mini-mental state examination(MMSE)and activities of daily living assessment form(ADL)were conducted for the cognitive function and ability of daily score firstly.When the score below the standard,the Hamilton depression scale and Hachinski ischemic scale were re-used for diagnostic score.Related laboratory tests were conducted to exclude other central nervous system and other systems and material causes of dementia patients.Ultimately,105 cases of AD,diagnosed by the neurologist,and 42 cases of non central nervous system disease,non dementia non nervous system disease patients as the normal control group were involved.T-tau and P-tau levels in the two groups were determined by ELISA.Results the T-tau concentration in AD group(15.93+6.59)ng/L was higher than control group(14.10±6.32)ng/L,no significant difference was found (P ＞ 0.05).However,compared with control group (0.69 ± 0.24) ng/L,P-tau protein in AD group (1.26 ± 0.75)ng/L increased significantly(P＜0.05).Conclusion Plasma levels of phosphorylated tau protein might have diagnostic value for AD patients.

The arsenic compounds including arsenic trioxide and arsenic sulfide have played a crucial role in the clinical treatment of hematologic malignancies and solid tumors. Arsenic agents can induce tumor cells differentiation, apoptosis and autophagy, eliminate leukemia-initiating cells, and directly bind to the target proteins. This paper reviews the mechanism progress of arsenic agents in various tumors to further understand the intricate anti-tumor mechanisms of arsenic agents and to expand its therapeutic spectrum.

Online Mendelian Inheritance in Man (OMIM) is a knowledge source and data base for human genetic diseases and related genes. Each OMIM entry includes clinical synopsis, linkage analysis for candidate genes, chromosomal localization and animal models, which has become an authoritative source of information for the study of the relationship between genes and diseases. As overlap of disease symptoms may reflect interactions at the molecular level, comparison of phenotypic similarity may indicate candidate genes and help to discover functional connections between genes and proteins. However, the OMIM has used free text to describe disease phenotypes, which does not suit computer analysis. Standardization of OMIM data therefore has important implications for large-scale comparison of disease phenotypes and prediction of phenotype-genotype correlations. Recently, standard medical language systems, term frequency-inverse document frequency and the law of cosines for document classification have been introduced for mining of OMIM data. Combined with Gene Ontology and various comparison methods, this has achieved substantial successes. In this article, we have reviewed various methods for standardization and similarity comparison of OMIM data. We also predicted the trend for research in this direction.
Databases, Genetic ; Humans ; Phenotype

Objective To evaluate clinical efficiency of Tongxinluo capsule in the treatment of stable angina pectoris.Methods Patients(n=98) were randomLy divided into two groups.The treatment group of 50 patients received Tongxinluo capsule 1.14g,po,tid for 4 WK.The control group of 48 patients received Isosrbide dinitrate 10 mg,po,tid for 4 WK.Results The clinical and electrocadiogram(ECG) effective rates of the treatment group were 70.0% and 48.0%respectively,which were significantly higher than 45.8%and 22.9%of the control group,P

Objective To construct and screen effective shRNA expression vectors targeting human AQP1 gene ,and evaluate the interference efficiency of the AQP1 shRNA recombinant plasmids ,thus provide basis for further exploration on the effect and mechanism of AQP1 gene on human breast cancer cells .Methods Four pairs of shRNA sequences targeting human AQP1 gene were designed and synthesized ,and then inserted into the GV115 vector .AQP1 shRNA and control shRNA plasmids were trans‐fected into human breast cancer MCF‐7 cells .The expression of AQP1 mRNA and protein were detected by real time PCR(RT‐PCR) and Western blot to evaluate the interfering efficiency .Results RT‐PCR demonstrated that AQP1 was expressed in human breast cancer MCF‐7 cells .Sequencing showed that the shRNA vectors targeting AQP1 were successfully constructed .48 h after the AQP1 shRNA transfection ,AQP1 mRNA and protein expression levels in MCF‐7 cells were reduced to a significant degree ,and the AQP1 shRNA 4 plasmid vector could inhibit the AQP1 most efficiently .Conclusion The AQP1 shRNA recombinant plasmids vectors were successfully constructed and can significantly inhibit the expression of AQP1 in MCF‐7 human breast cancer cells .

Objective To investigate the influencing factors involved in the long-term effect after interventional treatment of diabetic lower extremity vascular disease.Methods The data of 358 diabetic patients with lower extremity vascular disease were collected retrospectively.The ankle-brachial index (ABI) values at the 6th, 12th and 24th month after interventional treatment were documented and the factors may influence ABI value werc analyzed.Results Single factor analysis showed that after 24 months treatment, the proportion of ABI＜0.5 (severe ischemia) in the patients combined with obesity, smoking, older age were 15.0％ (31/206), 18.4％ (25/136) , 12.1％(19/157) ,7.5％(15/200) ,while non obesity,younger age,no smoking,no hypertension were 6.6％ (10/152), 14.8％ (33/222), 6.5％ (13/201), 1.9％ (3/158), and the differences were significant (P ＜0.05).Logistic regression analysis showed that old age (OR =1.341,95％ CI: 1.281-1.496, P =0.045), smoking(OR=2.301,95％ CI: 1.903-4.844,P=0.028) and obesity(OR=1.299,95％ CI: 1.270-1.588,P =0.038) were the independent factors influence the long-term therapeutic effects on diabetic lower extremity vascular disease.Conclusion Obesity, smoking, old age are the main factors influence the long-term therapeutic effects on diabetic lower extremity vascular disease.

Objective: To replace esophageal defects with artificially composed biodegradable materials and non-biodegradable materials. Met hods: A two-layered tube consisting of a collagen-chitosan sponge and an inner polyurethane stent was used to replace 5 cm esophageal segmental defect s in 15 dogs. The inner polyurethane stent was removed endoscopically at weekly intervals from 2 or 4 weeks. Results: Partial regeneration of es ophageal epithelia was observed in 5 dogs at week 2, and progressing constricti on occurred and the dogs became unable to swallow within 1 month. In the 10 dog s that the polyurethane stent was removed at week 4, regenerated esophageal tiss ue successfully replaced the defects, and complete epithelization was observed 1 month after surgery. Complete regeneration of esophageal mucosa structures, inc luding mucosal smooth muscle and mucosal glands were observed 3 months after surgery, and partial regeneration of esophageal muscle tissue was also observed 6 months after surgery. Conclusion: Our artificial prosthesis i n reconstruction of the cervical esophagus segment in dogs is feasible. Through temporary polyurethane tube, collagen-chitosan sponge provides a three-dimensi onal structure suitable for the regeneration and sufficient degradation time for the complete regeneration of esophagus.

Objective To detect the proliferation and the expression levels of downstream target genes of Notch pathway of T-ALL CCRF-CEM(CEM)cell line treated with exogenous DLK1 protein,in order to investigatethe effects of DLK1 protein on the Notch pathway in CEM cells.Methods CCK-8 assay was performed to examine the proliferation of CCRF-CEM cells,which were treated with various concentration(0.5,1.0,1.5 μg/ml)DLK1 for various time(24,48,72 h).RFQ-PCR was applied to assess the mRNA expression level of Notch1 receptor and downstream target genes of Notch pathway in CEM cells,which were treated for various time(24,48,72 h).Results DLK1 protein stimulated the proliferation of CCRF-CEM cells,and the proliferation rates with different concentrations of DLK1 were 0.14±0.03,0.17±0.04,0.55±0.01 in 72 hours,respectively,there were statistic differences between that in the experimental group and that in the control group(P＜0.05).DLK1 protein up-regulated the Notch1 receptor and its downstream target genes HES1,c-myc and NF-κB.The relative transcript levels of target genes HES1 in 72 hours,c-myc in 48 hours and NF-κB in 72 hours were 3.2551±0.3100,1.6086±0.0941,2.0515±0.3453 respectively,and there were statistic differences between that in the experimental group and that in the control group(P＜0.05).Conclusion DLK1 protein stimulates the proliferation of T-ALL CCRF-CEM cells by up-regulating Notch1 receptor and downstream target genes HES1,c-myc and NF-κB of Notch pathway.