Objective To investigate the differentiation of mesenchymal stem cells(rMSCs) of young rat into neuron-like cells with Ligustrazin hydrochloride. Methods rMSCs were separated from femurs marrow flushed out with DMEM(low glucose) by using a needle and syringe, then planted in plastic culture flask. Through expanded to 5 passages, rMSCs were induced to differentiate into neuron-like cells with Ligustrazin hydrochloride. Anti-neurofilament(NF-M), nestin, neuron-specific enolase(NSE), MAP-2,GAP-43 and glial fibrillary acidic protein(GFAP) antibodies were detected by immunohistochemistry. Results rMSCs were comprised a single phenotypic population and displayed a fibroblast-like morphology after 5 passage in culture. With 10*!?g/L bFGF pre-induce for 24*!h, then the medium was replaced with induction medium containing Ligustrazin hydrochloride. The induced-rMSCs exhibited neuronal morphological characteristics from the first half an hour to 5*!h. The neuron-like cells expressed NF-M, NSE, MAP-2,GAP-43 and nestin positive, but didn't express glial astrocyte marker GFAP.Conclusion rMSCs can be induced to differentiate into neuron like cells with Ligustrazin hydrochloride in vitro.

Adolescent ; Adult ; Child ; Disasters ; Earthquakes ; Female ; Humans ; Male ; Middle Aged ; Sunburn ; Young Adult

Objective:To investigate the curative effects and mechanism of Shuxuetong injection (疏血通注射液) on treating coronary heart disease(CHD).Methods:The treated group (n=20) based on conventional therapy was treated with Shuxuetong injection infused intravenously,meanwhile the control group treated with conventional therapy only.Before and after therapy the changes in concentrations of plasma endothelin(ET),thromboxin B2(TXB2),6ketoprostaglandin F1α(6ketoPGF1α) and blood rheology between two groups were compared.Results:After therapy the clinical symptoms were convalescent,the ET and TXB2 reduced,the 6ketoPGF1α increased,and the parameters of blood rheology improved.Conclusions:Shuxuetong injection is able to dilate vessels,increase blood flow volume,anticoagulate,and improve blood rheology so that it is effective drug to treat CHD.

Objective To determinted whether GM1 had a protective effect on injury induced by serum-deprivation and the possible mechanism in PC12 cells. Methods The viability of PC12 cells was quantified by MTT after serum-deprivation.The number of apoptotic cells and necrotic cells were determined by Hoechst 33258/PI staining.And the change of PKC protein expression on PC12 cells' membrane and cytosols was detected by Western blotting. Results 1.The viability of PC12 cells decreased after serum-deprivation and the serum-deprivation for 24 hours was chosen as an injury model in this research.Most of the PC12 cells presented apoptosis 24 hours after serum-deprivation.In addition,the PC12 cells' cytosols PKC protein decreased,while the PC12 cells' membrane PKC protein increased significantly,and this result suggested PKC's translocation to membrane and its activation.2.The viability of PC12 cells preincubated with GM1 in high concentrations(10,1,0.1?mol/L) increased significantly and GM1 protected PC12 cells from apoptosis after serum-deprived injury.GM1 reduced the damage of serum-deprivation on PC12 cells and inhibited PKC protein translocation after injury.3.The repair function of GM1 was effective to neuronal resume after serum-deprived injury.Conclusion Neuroprotective effects of GM1 on serum-deprived injury may be partly mediated through the regulation of PKC pathways and it is helpful for the recovery after injury.

Objective To evaluate the feasibility and safety of transjugular liver biopsy( TJLB) by using the LABS 200 liver access and biopsy set ( Cook Inc, USA) .Methods Five minipigs were operated though TJLB puncture under the imaging guidance.The liver biopsies were analyzed by histological examination.Results Technical success of TJLB was achieved in all the 5 minipigs.No procedure-related complications occurred, and sufficient amount of specimen for histological examination was obtained in all cases.Conclusions Our preliminary results indicate that transjugular liver biopsy with the use of Cook LABS 200 liver access and biopsy set is clinically safe and feasible, and provide technical support for its clinical application.

This paper summarizes professor LU Zhi-zheng’s clinical experience of treating thoracic obstruction from regulating spleen and stomach.Seven kinds of syndromes and treatments are concluded and analyzed.Proved cases were included in order to provide reference for the clinical treatment of thoracic obstruction.

Aim To investigate the protective effect of non-mitogenic human acidic fibroblast growth factor (nm-haFGF) on cerebral ischemia-reperfusion injury in mice. Methods Cerebral ischemia-reperfusion model was made by ligating bilateral carotid for 20 minutes in mice. These mice were randomly divided into model group( iv NS), two doses of nm-haFGF (iv 25、50 ?g?kg-1) groups, rhaFGF group(iv 50 ?g?kg-1) and sham- operated group. Step down test and Y-type electric maze were used to examine the effect of nm-haFGF on learning and memory of mice, then Even′s Blue(EB) level and NO level in brain of these mice were measured. Results The nm-haFGF significantly decreased numbers of errors of mice in 5 min in step down test and in Y-type electric maze test; EB and NO levels in brain of these mice were lower than those of model group respectively. Conclusion The nm-haFGF can protect cerebral ischemia-reperfusion injury in mice.

ObjectiveA HPLC-FLD method was developed to determine the levels of serum AAA in CRIpatients, and to studythe variationof serum AAAinCRI patientsanditsclinical significances. MethodsSerumsampleswerecollected from100healthcontrolsand 80CRI patients. According to 2002 National Kidney Foundation (NKF) staging diagnosis, CRI patients included 4 of stage 2, 12 of stage 3, 12 of stage 4, 52 of stage 5. According to pathogenesis, CRI patients were also divided into 3 groups :chronic nephritis group ( n = 32), DM group ( n = 36), hypertension group ( n = 12 ).Serums were deproteinized by equal volume of 5％ (v/v) PCA and supernate were analyzed direcdy. External standard method was used as quantitative method. The analytical column was Megres C18. 10％ acetonitrile in water was used as mobile phase. Flow rote was 1.0 ml/min. The wavelengths of fluorescence excitation and emission were changed with specific time. The levels of Tyr, Phe and Trp in CRI groups, different CKD stages and different pathogenesis were compared with healthy control groups to evaluated the sensitivity and specificity of serum AAA for CRI diagnosis. ResultsThe linear ranges of the method were 0. 550 -275.000, 3. 050 - 1220. 000 and 0. 049 -49. 000 pμmol/L for Tyr, Phe and Trp, respectively. The limit of detection (LOD) was 0.014 μmol/L for Tyr, 0.500μmol/L for Phe, and 0.005 μmol/L for Trp. The average recovery was 100. 9％, 101.3％ and 98. 5％ for Tyr, Phe and Trp, respectively. Intra-day CVwas 3. 18％ -4. 20％ ( mean was 3. 13％ )and inter-day CV was 3. 18％ -4. 20％ ( mean was 3. 58％ ). The concentration of serum AAA, Tyr and Trp and the ratio of Tyr/Phe in CRI patients were( 135.74 ±23.23 )μmol/L, (52.27 +8.25) μmol/L, (21.49 ±4.25) μmol/L and[0.87(0.68 - 1.05)]μmol/L. which were lower than that in healthy groups (t value was -14. 709, 4.452, 22. 100, U value was 266.000,respectively, P＜0. 05). The concentration of serum AAA, Tyr and Trp and the ratio of Tyr/Phe in healthy groups were ( 174. 47 ± 11.57 ) μmol/L, ( 63.53 ± 4. 68 ) μmol/L, (44. 22 ± 3. 67 ) μmol/L and[0. 97(0. 94 - 1.00)]μmoL/L. There were no statistically significant difference between the different stage of CRI. Compared with the concentration of Tyr, Phe and Trp among chronic nephritis group, DM group,hypertension group, the concentration of Tyr had no significant changes among these three kinds of diseases (P ＞ 0. 05 ). The concentration of Phe had significant changes between Chronic nephritis group and DM group, Chronic nephritis group and hypertension group ( U = 395.00, 114. 00, P ＜ 0. 05 ) ; the concentration of Trp haad significant changes between Chronic nephritis group and DM group ( U = 349.00, P ＜ 0. 05 ).The diagnostic sensitivity and specificity of serum AAA for CRI were 90％ (72/80) and 100. 0％ (100/100).ConclusionsThe method of high-performance liquid chromatography with fluorescence detection ( HPLC-FLD) is simple, rapid, sensitive and specific. Simultaneous determination of serum AAA was benefit to the diagnosis and evaluation of CRI patients.

Objective:This study aimed to detect the expression of annexin A1 in human non-small cell lung cancer (NSCLC) and to explore its clinical significance. Methods:We detected the expression levels of annexin A1 in NSCLC and the same patient's dis-tal cancerous tissue (from the edge of the tumor >5 cm) by real-time fluorescence quantitative polymerase chain reaction (real-time PCR), Western blot, and immunohistochemical methods, and then analyzed their correlation with clinical pathological parameters. Re-sults: Real-time PCR showed that the expression of annexin A1 mRNA in NSCLC was higher than that of distal cancerous tissue (0.574±1.403 vs. 0.240±0.893, t=2.060, P=0.045). Moreover, the expression of annexin A1 in NSCLC was associated with the degree of differentiation, lymph node metastasis, and TNM staging (P<0.05), but independent of gender, age, smoking history, tumor size, and histological type (P>0.05). Western blot and immunohistochemistry revealed that the expression of annexin A1 protein in NSCLC was higher than that of distal cancerous tissue. Conclusion:Annexin A1 is highly expressed in the cancer tissues of patients with NSCLC, which may be correlated with the occurrence and development of tumor and its invasion and metastasis.

Objective To discuss the feasibility and long-term effect of free latissimus dorsi muscle flap in repair of severe lower extremity injury in children. Methods From July 1999 to June 2004, nine child patients (at age of 6-13 years) with severe lower extremity injury involving soft tissue defects a-round the calf and the foot associated with complex open fractures, bare dislocation, and injury of the nerve, tendon and artery were repaired with free latissimus donsi flap, with flap area ranging from 30 cm ×12 cm to 10 cm × 5 cm. Results All the latissimus dorsi flaps survived, with success rate of 100%. A follow-up for 4-9 years showed that the flap had sound shape and function and normal blood supply, without significant influence on donor area. Conclusion Latissimus dorsi flap has advantages of constant anatomical site, abundant blood supply, massive area, strong anti-infection ability and less in-fluence on donor area and hence is an ideal method for repairing severe lower extremity injury in children.