ObjectiveTo study the effect of bone mesenchymal stem cells (BMSC) transplantation into traumatic brain injury(TBI) rats by the external carotid artery on neurological function and learning and memory.MethodsTen adult SD rats were randomly divided into TBI group ( n =5 ) and BMSC transplantation group ( n=5).Feeney free falling method was used to establish TBI models.The experimental rats were administrated with BMSC via external carotid artery (ECA),while TBI rats were injected with sterile liquid medium of equal volume via right ECA.Neurological function were evaluated according to the modified neurological severity score (NSS) at 1,3,7,15 days.Morris water maze test was used to observe the animal capabilities of place navigation and space exploration at 15 days,then animals were sacrificed.Survival and migration of implanted BMSC in brains under fluorescence microscope. ResultAfter traumatic brain,varying degrees convulsions,paralysis,loss of balance function in rats were found.Compared with TBI group,BMSC transplantation decreased significantly NSS (P ＜0.01 ).BMSC transplantation significantly decreased on escape latency ( ( 20.48 ± 2.29 ) s ) than the TBI group ( ( 85.93 ± 47.48 ) s) (P ＜ 0.01 ).Moreover,BMSC group in the target quadrant dwell time ( ( 28.62 ± 1.72) ％ )and distance ( (29.05 ± 3.08 )％ ) as well as the number of passing the platform (8.00 ± 2.45 ) were significantly higher than the TBI group ( ( 19.37 ± 2.81 ) ％,(21.78 ± 3.06) ％,(2.00 ± 1.87) respectively,P ＜ 0.01 ).Transplanted BMSC could survive and migrate around injury brain through Hochest mark immunofluorescence.ConclusionBMSC can survive and migrate around injury brain by transplantation of external carotid artery,which results in a significant neurological function improvement and learning and memory increase in rats with traumatic brain injury.

Objective To investigate the clinical efficiency,safety,adverse reactions and healthrelated life quality of transdermal fentanyl patches for pain management in terminal cancer patients with hepatic and renal dysfunction and ascites.Methods 98 terminal cancer patients with moderate to serve pain combined with abnormal hepatic and renal dysfunction were randomly divided into two groups.Group Ⅰ (n=56)received transdermal fentany patches.Group Ⅱ,the control group (n=42),received morphine controlledrelease tablets.Terms of pain intensity,function of renal and liver,adverse reactions and heath-related quality of life were assessed before and after treatment.Results Patients were satisfied with their pain management in both groups,and no significant difference in pain release was observed between the groups (x2 =0.01,0.07,0.01,0.04,P ＞ 0.05).The incidences of constipation and dysuresia were significantly less in the group Ⅰ compared with that of the group Ⅱ (x2 =7.32,3.96,P ＜ 0.05).The incidences of hypersomnia,dizzy,nausea and vomiting were similar betwecn the two groups (x2 =0.12,0.54,0.54,0.02,P ＞ 0.05).Most of the adverse reactions would relieve or disappear after symptomatic treatment.Values of BUN,CR,ALT,AST were similar before and after treatment in group Ⅰ (t =1.43,1.67,0.91,0.11,P＞ 0.05).However,in group Ⅱ,these values were significantly increased after treatment (t =17.59,49.17,42.12,36.23,P ＜ 0.05).The heathrelated life quality (appetite,spirit,somnus,fatigue,daily life and countenance) were significantly improved after treatment in both groups (the group Ⅰ t =3.37,4.40,2.07,5.66,4.48,P ＜ 0.05; the group Ⅱ t =2.03,2.27,3.59,4.16,2.79,P ＜ 0.05),the spirit group Ⅰ improved more obviously compared with group Ⅱ (t =2.93,P ＜ 0.05).Conclusion Transdermal fentanyl patches provides equal pain relief compared with Morphine controlled-release tablets in the terminal cancer patients with abnormal hepatic and renal function and ascites.Transdermal fentanyl patches significantly improve health-related quality with less hepatic and renal function influence and low incidence of adverse reaction.It should be recommended in the treatment terminal cancer patients with moderate to serve pain combined with abnormal hepatic and renal function and ascites.

Objective To isolate and identify the Dengue virus(DEN)from the sera of patients with unknown fever in summer and autumn in Dushan and Xingyi areas of Guizhou province,China.Methods From June 2005 to October 2005.356 blood samples were collected from patients with unknown fever in Dushan and Xingyi areas of Guizhou province.The serum samples were inoculated on the C6/36 cell monolayers.After three blind passages,the cytopathie effect(CPE)Was observed.Identification of DEN antigen was earried out by indirect immunofluorescence assay(IFA)with the monoclonal antibody(McAb)against DENl-4 virus.The total RNA was extracted from the serum and tested by RT-PCR with the universal primer for DEN NS region.And determination of the RNA sequenee Was performed,and phylogenetic analysis was carried out.Results Three serum samples caused CPE and were proved as DEN2 positive by IFA,RT-PCR and senquence determination.The phylogenetic tree analysis showed that the isolated virus strains had the closest relations with the systemic evolution of the strains DEN2-43 and DEN2-44.Conclusion DEN infections exist in the population of Dushan and Xingyi of Guizhou,China.

Objective To analyse the relationship between T lymphocyte subsets and NK cells expression and dynamic changes in lung cancer patients 'peripheral blood and the occurrence and development of cancer,and investigate their clinical significances.Methods Flow cytometry was applied to detect 66 patients with lung cancer,60 patients with pulmonary tuberculosis and 60 healthy persons peripheral blood CD+3,CD+3CD+8,CD+3CD+4,Th/Ts,CD+16CD+56 expression.Lung cancer group peripheral blood CD+3,CD+3CD+8,CD+3CD+4,Th/Ts,CD+16CD+56 expression were also detected on 3rd,7th and 20th day before and after chemotherapy.Results Lung cancer group CD+3,CD+3CD+4,Th/Ts,CD+16CD+56 expression decreased significantly [(54.23±10.37)％,(34.23±8.03)％,1.35±0.20,(25.18±4.34)％] and had significant differences compared with pulmonary tuberculosis group [(63.09±9.19)％,(39.46±12.74)％,1.51±0.41,(26.45±3.96)％] and healthy group [(69.68±8.31)％,(42.31±13.29)％,1.89±0.48,(29.44±2.51)％](P ＜ 0.05),but CD+3CD+8 expression showed no significant difference(P ＞ 0.05).In chemotherapy group,comparing with before chemotherapy,remission group CD+3,CD+3CD+4,Th/Ts and CD+16CD+56 expression decreased significantly (P ＜ 0.01)on 3rd day after chemotherapy,while CD+3CD+8expression increased significantly(P ＜ 0.01).On 7th day,each index recovered to the level of before chemotherapy basically.On 20th day,CD+3,CD+3CD+4,Th/Ts and CD+16CD+56 expression increased significantly(P ＜ 0.05)compared with before chemotherapy,while CD+3CD+8 expression significantly decreased(P ＜ 0.05).Chemotherapy unease group had no significant difference (P ＞ 0.05).Lung cancer of stage Ⅲ A and Ⅲ B compared with stage Ⅰ A,and lymph node metastasis in N3 group compared with N0 group,CD+3,CD+3CD+4,CD+3CD+8,Th/Ts and CD+16CD+56 expression had significant differences (P ＜ 0.05).Compared with their pathological types,each index had no significant difference(P ＞ 0.05).Conclusion Monitoring the peripheral blood T lymphocyte subsets and NK cells dynamic of lung cancer patients can guide the clinical diagnosis and treatment,and contribute to the assessment of immune function.

Objective To observe the effects of different modes treadmill training on cognitive func-tion and transforming growth factor β1 ( TGF-β1 ) expression in cerebral cortex of rats. Methods Two months old rats were divided into the control group,piecewise training group and intermittent training group ( n=10 in each group) . The training was performed five times a week for 6 weeks. Learning and memory a-bility of all rats was detected by water maze at 6 weeks after the training. TGF-β1 expression and localization in cerebral cortex was tested by QRT-PCR and immunofluorescence, respectively. Results The platform time in piecewise group ((30±28) s) and intermittent group ((25±23)s) was both significantly shorter than that in control group ((58±50)s). In the space exploration,the time around Ⅳ quadrant platform in piecewise group((23.6±3.9)s) and intermittent group ((24.3±8.9)s) was significantly higher than that in the control group((17.7±2.0)s). The expression of TGF-β1 mRNA in cerebral cortex in intermittent group (0.0067±0.0043)was obviously higher than that in piecewise group (0.0035±0.0006) and control group (0.0041±0.001). TGF-β1 was located in cell membrane and cytoplasm,and the relative optical density of intermittent group (0.0045±0.0017) was significantly higher than that of control group (0.0019±0.0004) and staging group (0.00175±0.00045). Conclusion (1)Learning and memory function both were im-proved after treadmill six weeks with piecewise and intermittent training models. ( 2) The level of TGF-β1 gene and protein was significantly increased after interval training in cortex of rats.