ObjectiveTo study memory impairment of closed head injured(CHI) patients during later recovering period. MethodsMemory function was examined in 20 CHI patients and 20 matched healthy controls by Clinical Memory Scale(CMS). ResultsThe scores of 5 sub tests and MQ of CHI group were significant lower than that of control group, the rate of MQ ≤ 79 in CHI patients was significant higher than in controls. Conclusion There are severe memory impairment in CHI patients during later period, the impairment of recall is more serious than that of recognition.

Objective To compare the clinical outcomes of Bryan disc replacement with anterior cervical discectomy and fusion (ACDF) in patients with cervical spondylopathy. Methods Sixteen patients underwent Bryan cervical disc replacement (A group), and 35 patients underwent traditional ACDF (B group) were included in the study. Patients were followed up at regular intervals. The JOA score, SF-36, neck disability index (NDI) score and the dynamic flexion-extension radiographs were used to evaluated the oucomes.Results All the patients were followed up for more than 6 years (mean, 73.5 months). There were no severe adverse events in both groups. In A group, there were no differences between postoperative and preoperative mobility of surgical segments (P＞0.05). All patients obtained bone fusions 6 month after surgery in group B.In both groups, the clinical symptoms relieved obviously after surgery. The postoperative scores of the JOA,SF-36 and NDI significantly improved compared with those of preoperative ones (P＜0.05). In B group, range of motion (ROM) was significantly decreased postoperatively (P ＜0.01); in A group, there were no significant differences between postoperative and preoperative ROM (P＞0.05). The difference between two groups regarding ROM was noted (P＜0.05). Conclusion The mid-term outcomes of Bryan cervical arthroplasty are satisfied. And the cervical arthroplasty which can maintain the mobility of the segment, and decrease the incidence of the postoperative neck axial symptoms is a viable alternative to cervical spondylopathy.

ObjectiveTo study possible differences in cognitive dysfunction between left hemisphere injury(LHI) patients and right hemisphere injury(RHI) ones.MethodsCognitive function of 55 LHI patients and 43 RHI patients were examined by aphasia screening test and the Loewenstein Occupational Therapy Cognitive Assessment Battery(LOTCA).ResultsThe scores of RHI group were significant higher than that of LHI group in orientation in place,overlapping figures,spacial perception,praxis(P<0.001-0.005),but significant lower than that of LHI group in visual identification of shapes and visuomotor organization(P<0.001-0.02).The possibilities of RHI group were significant more than that of LHI group in disorientation in time,shape agnosia,disorder in figure-ground identification,unilateral neglect,disordered attention(P<0.005-0.025),but significant fewer than that of LHI group in aphasia,ideomotor apraxia(P<0.005-0.01).The possibilities were no significant differences in disorientation in place,objects agnosia,colour agnosia,spacial agnosia,motor apraxia,constructional apraxia,thinking disorder between RHI group and LHI group(P>0.05).Conclusions There is characteristic cognitive dysfunction after right or left hemisphere injury.

Objective To investigate the effect of neutral amino acid on preventing Parkinson disease.Methods Mice were injected with L-Valine,L-Pheylalanine,D-Valine or L-Lysine before or after paraquat administration,by which prakinsonian mouse model was constructed.The paraquat immunoreactivity was observed within nigral cell bodies.Then neurodegeneration and ?-synuclein aggregation were observed by immunohistochemistry and Western blot.Results Paraquat immunoreactivity was abolished by the administration of L-Valine,L-Pheylalanine before paraquat exposure.Pre-treatment with these two amino acids also protected the paraquat-induced loss of nigrostriatal dopaminergic cells and formation of thioflavine S-positive aggregates.In contrast, paraquat-induced toxicity was unaffected if animals were injected with these two amino acids after paraquat exposure or pre-treated with D-Valine or L-Lysine.Conclusions L-type neutral amino acids such as L Valine and L-Pheylalanine can prevent paraquat-induced neurodegeneration and a synuclein pathology through a competitive inhibition mechanism with stereospecificity in the central nervous system (CNS).Neutral amino acid could protect the dopaminergic neuron in substantia nigra and may prevent Parkinson disease.

The PET tracer 5-([11C]methyloxy)-L-tryptophan (5-(11)CMTP) was prepared by nucleophilic fluorination and alkylation reaction via a two-step procedure in order to develop specific tumor probe. The biodistribution and microPET imaging of 5-(11)CMTP were executed. The results unveiled that the overall radiochemical yield with no decay correction was (14.6 ±7.2) %, the radiochemical purity was more than 95% and high uptake and long retention time of 5-(11)CMTP in liver, kidney and blood were observed but low uptake in brain and muscle were found, furthermore, high uptake of 5-(11)CMTP in tumor tissue was observed. It seems that 5-(11)CMTP will be a potential amino acid tracer for tumors imaging with PET.
Amino Acids ; Animals ; Neoplasms ; diagnostic imaging ; Positron-Emission Tomography ; Radioactive Tracers ; Tissue Distribution ; Tryptophan ; analogs & derivatives

ObjectiveTo investigate the epidemic situation of brucellosis in Datong city, and to provide scientific evidence for making appropriate prevention and control measures. MethodsSurveillance data of human brucellosis in 7 countris and 4 districts in Datong city between 2006 and 2009 were collected, throng the national network straight quote system in an infectious diseases. Excel database was established and all data were statistically analyzed. Incidence of brucellosis in local population was analyzed. The regional distribution, time distribution,occupation, age and sex distribution were analyzed. Epidemic characteristics and trend of brucellosis in Datong city were summarized. Results A total of 5195 cases of brucellosis patients in Datong were found between 2006 and 2009, the average incidence rate was 57.51/10 million. All counties had the disease, and the onset of the disease mainly in the spring and summer. Most cases were young males. Farmer case was 81.67％(4243/5195) of the total patients. ConclusionsFrom 2006 to 2009, epidemic characteristic of Datong human brucellosis ishigh-low-high(incidence). We suggests the Department concerned to strengthen the prevention and control of the disease in some counties, focusing on spreading of disease prevention and control knowledge among farmers and increase their self-protection awareness.

Aged ; Humans ; Male ; Middle Aged ; Receptors, Interleukin-2 ; blood ; Silicosis ; blood ; classification ; T-Lymphocyte Subsets ; metabolism

A pilot-scale research on purification of odorous gas emitted from wastewater treatment plant using a biofilter was conducted. The aim of this study is to check on the performance of biofilter running in various conditions and the effect of pH fluctuations on the performance of biofilter. The relation between distribution of microorganism and removal of odorous gases were also discussed here. The experimental results show that the predominant odor-causing gas can be efficiently eliminated by a biofilter inoculated with deodoring microorganism which were isolated previously. Moreover the biofilter had been proved having good tolerance to shocking loads of pollutant and can operate well in the condition of low pH.

Objective To evaluate the feasibility of composite material of bone morphogenetic protein (BMP) and PLGA/TCP in repair of peri-porous-titanium bone defects in adult rabbits.Meth- otis The composite of PLGA/TCP scaffold with bovine BMP was made and implanted in distal bone de- fects peri-porous-titanium in femur of adult rabbits.The effect of BMP with PLGA/TCP on peri-prosthesis was evaluated by means of scanning electron microscope (SEM),energy dispersive X-ray analysis (EDX) and biomechanics.Results BMP with PLGA/TCP showed obvious peak of Ca and P of EDX in the pores of titanium in experiment group six weeks after operation and higher than that in control group (P＜0.05).Push-out test demonstrated that the bonding strength between the composite of HA coating/ porous titanium and bone was increased significantly with time (P＜0.05).In experiment group,at 6 and 12 weeks,peri-porous-titanium had higher shearing force compared with control group (P＜0.05). Conclusion BMP loaded with PLGA/TCP is a promising bone graft for bone defects in revision arthro- plasty,as indicates that bone induction of BMP plays an important role in biological stabilizaiton.

AIM To observe the clinical efficacy of Maixuekang Capsules (hirudin) combined with female progestational hormone treating blood-stagnated cryptogenic hypomenorrhea and their mechanism of action.METHODS Ninty eligible patients were randomly and equally divided into treatment group (Maixuekang Capsules combine with female progestational hormone) and control group (female progestational hormone),treated for three menstrual cycles,the menstrual blood volume,blood D-dimer,maximum platelet aggregation rate,the thickness of endometrium,spiral artery blood flow peak systolic velocity (PSV),resistance index (RI) and pulsatility index (PI) were recorded during the three months period.RESULTS The menstrual blood volume of the two groups were all increased post-treatments (P ＜ 0.05),the treatment group was superior to the control group (P ＜ 0.05);blood D-dimer and maximum platelet aggregation rate of the treatment group had reduced post-treatments (P ＜ 0.05),there was no difference in the two values of the control group between post-treatment and pre-treatment (P ＞ 0.05);the thickness of endometrium of the two groups were both increased after the treatment (P ＜ 0.05),while there was no remarkable statistical difference between the two groups (P ＞ 0.05);RI in the treatment group had remarkable reduction post-treatments (P ＜ 0.05),but there was no remarkable difference of RI in the control group (P ＞ 0.05);there was no statistical difference of PSV and PI in both groups before and after the treatment (P ＞ 0.05).CONCLUSION The combination treatment of Maixuekang Capsules and female progestational hormone can obviously increase menstrual blood volume,improve uterine blood perfusion and endometrial microcirculation.It has more advantages than use hormones alone.