Objective To study the distribution of rifampicin,isoniazid in tissues of patients with tuberculosis wrist for the sake of providing siven guide toward operation and postoperative chemotherapy.Methods 32 patients with tuberculosis wrist,according to radiographic data,were divided into Center group(group Ⅰ)and Borderline groups(group Ⅱ).All patients received chemotherapy regimen of 3SHR(T)Z/6HR(T).After treatment for4 weeks,the patients'specimen of serum,and tuberculosis tissues(group Ⅰ)including sclerotic bone wall,sub-normal bone and tuberculosis tissues(group Ⅱ)including dissolved bone wall,sub-normal bone were obtained during operation at 1,2 hours respectively after oral medication.Then pretreatment and mensuration using HPLC method were carried out after specimen's removal.Results Concentrations of isoniazid and rifapentine in(group Ⅰ)and(group Ⅱ)sub-normal bone and dissolved bone were abeve the minimal bactericidal concentration values.Concentration of 2 drugs in(group Ⅰ)sclerotic bone wall were much lower than that in sub-normal bone and dissolved bone wall.Conclusion The concentration of 2 drugs in patients sclerotic bone wall of wrist were too lower to eliminate the mycobacterium tuberculosis,while an effective concentration for anti-tuberculosis chemotherapy should be find in sub-normal bone and dissolved bone of wrist.Thus,the sclerotic bone of wrist plays an important role in obstructing the drags penetration into tuberculosis.

Objective To discuss the efficacy of the modified falling risks for older people-community setting screening tool and the falling risks of the older people.Methods A cross-sectional study was conducted in 4 communities of Chengdu.A total of 408 people aged 65 years and over from 4 residents communities were selected with convenient sampling.To screen out the people who were in high risk of falls with a self-making questionnaire and the modified falling risks for older people-community setting screening tool.Results After the 408 older people were evaluated by modified falling risks for older people-community screening tool,the result showed the area under curve of receiver operating characteristic of the scale was 0.936.Its sensitivity was 77.6％ (66/85),specificity was 93.2％ (301/323),positive predictive value was 75.0％ (66/88) and negative predictive value was 94.1％ (301/320).Conclusions The using of modified falling risks for older people-community setting screening tool is easy and fast,it has higher sensitivity,specificity and evaluation function.It can be used for screening falling risks among community setting elderly people in China.

OBJECTIVE:To study the separation and purification of polysaccharides sulfate from Ulva lactuca,and to analyze its structure.METHODS:The separation and purification method of polysaccharides sulfate from U.lactuca was optimized.The content of polysaccharides in polysaccharides sulfate was determined by phenyl-sulfuric acid method.The molecular amount of polysaccharides was determined by HPGC.The structure of polysaccharides was analyzed by IR and 13C-NMR.RESULTS:The optimal extraction condition of polysaccharides sulfate from U.lactuca were crashed materials 20 mesh sieve,20-fold water,decocting 3 times at 85 ℃,2 hours each time.The content of polysaccharides was 22.64% and molecular amount was 1 156 112.Soluble polysaccharides mainly contained ?-glucuronic acid,rhamnose and plenty of sulfate radical.CONCLUSION:The method is simple and stable,which provides theoretic basis for production of polysaccharides sulfate from U.lactuca.

Objective To compare the effect of natural antioxidants TA9001 and EGb761 on c-jun, NOS expression and survival of spinal motoneurons following brachial roots avulsion. Methods One hundred and eighty adult Sprague-Dawley female rats were randomly divided into TA9001, ECb761 and control groups. The right C 5～T 1 nerve roots were avulsed and then the introperitoneal injection of 1ml of 0.5% TA9001, 0.5% EGb761 or normal saline was given immediately and once daily to the rats, respectively. The rats were killed after survival for 4 h, 12 h 1 d,3 d,5 d,and 1 week, 2 weeks, 4 weeks and 6 weeks. The cryostat sections of C 7 segment were prepared and carried with c-jun immunocytochemistry, NADPH-d histochemistry and neutral red counter stain. Results The c-jun and nNOS gene expression was only appeared in injured motoneurons. c-jun was first appeared at 4 h, reached its maximum at 1 d, and grandually decreased till 2 weeks. NOS was first checked at 5 d, mostly at 2 weeks and decreased until 6 weeks. Avulsed motoneuron death started at 2 weeks, reached its peak at 4～6 weeks. Both TA9001 and EGb761 can cause c-jun up-regulation, nNOS down-regulation and more motoneuron survival as compared to control. Furthermore, EGb761 had more power to enhance c-jun expression than TA9901 at each time point. Conclusion It seems that nNOS is more important in motoneuron death mechanism than c-jun. Treatment of either TA9901 or EGb761 can protect the injured motoneurons following root avulsion.

AIM: To investigate the influence of Ginkgo biloba extract (EGb761) on c-jun expressions and motoneurons survival following root avulsion. METHODS: One hundred and eighty adult Sprague-Dawley female rats were randomly divided into control and EGb761 groups. Immediately after avulsion of C5-T1 nerve roots, the rats were injected ip with either 1 mL of EGb761 25 mg?kg~(-1)?d~(-1) or the same volume of normal saline, and the treatment repeated everyday. At 4 h to 6 weeks following avulsion, the C7 spinal segments of all rats were collected and prepared for c-jun immunocytochemistry and neutral red stain. The numbers of (c-jun) positive and survival motoneurons were counted and compared between two groups at each time point. RESULTS: In control rats following avulsion, c-jun positive motoneurons appeared at 4 h, reached its maximum at 1 d and declined to 2 weeks. Avulsion-induced motoneurons death started at 2 weeks, climbed to its maximum at 4 weeks-6 weeks. In EGb761 treated rats, both numbers of c-jun positive and survival motoneurons were more than that in control group at each time point. CONCLUSION: EGb761 attenuates avulsion-induced motoneurons death, and this effect may be related to up-regulation of c-jun gene in avulsed motoneurons. [

AIM: To investigate the pathological changes of motoneuron's function and morphology after root avulsion in order to study the neurobiology mechanism of motoneuron death. METHODS: Twenty female adult Sprague-Dawley rats, 200-300 g were used. The C 5-C 8, T 1 roots of the right brachial plexus were avulsed. All rats were killed 3 d, 5 d or 1 week after avulsion. One group of the C 5-C 8 spinal cords freeze sections (40 ?m thick) were collected for the NADPH-d histochemistry with neural red counterstained. Another group of the C 5-C 8 spinal cords freeze sections (40 ?m thick) were collected for the c-Jun immunocytochemistry stain. The paraffin sections (5 ?m thick) were collected for HE stain. The amount of NOS-positive and survival motoneurons was counted. The percentage of NOS expression and motoneuron survive were quantitatively analyzed considering the amount of contra lateral motoneurons as one hundred percent. RESULTS: The NOS expression rate was 0.74%?0.59% (3 d), 24.84%?6.73%(5 d), or 51.16%?8.67% (1 week), respectively. The survive rate was 93.00%?4.32% (3 d), 93.67%?5.27% (5 d), or 89.83%?2.65% (1 week), respectively. The motoneuron expressed c-Jun as early as 3 days after avulsion. The expression declined afterward until one week after avulsion. There was no significant change on the size of motoneuron. The nuclear membrane was still clear but some nuclei were not located in the middle of the cell body. There were some nucleoli with the chromatin condensation. CONCLUSION: The motoneuron NOS expression and cell death were increased within one week after spinal root avulsion. meanwhile, the c-jun expression was decreased. The NO/NOS may induce the motoneuron death by inhibiting the regenerating reactions of motoneuron after root avulsion injury.

Purpose To investigate the value of real-time three-dimensional contrast-enhanced ultrasound (RT3D-CEUS) for the evaluation of blunt renal trauma hemorrhage. Materials and Methods Nine healthy New Zealand white rabbits were randomly divided into three groups, and after heparinization, the models of ongoing hemorrhage of blunt renal trauma were developed by self-made minitype striker in the three groups with different force levels:77.2 N (group A), 106.2 N (group B), 135.1 N (group C). All rabbits were performed ultrasonography (US), color Doppler flow imaging (CDFI) and RT3D-CEUS before and after strike (within 20 minutes). The results achieved by US, CDFI, 2D-CEUS (A-plane results in RT3D-CEUS) and RT3D-CEUS were compared with each other, and further compared with the pathological results of the executed animals after blood pressure decreased lower than 40 mmHg. Results All rabbits showed traumatic renal lesions and it proved that the bigger the force the heavier the injury (group A: 1 case of levelⅠ, 2 cases of levelⅡ;group B:3 cases of levelⅢ;group C:1 case of levelⅢ, 2 cases of level Ⅳ ). After strike, US identified the presence of increasing hematoma under the capsule but could not detect active bleeding. In CDFI, only 1 case was detected ongoing hemorrhage. 2D-CEUS clearly presented the bleeding in all cases. RT3D-CEUS presented a vivid real-time and stereoscopical image of active hemorrhage in all cases and also showed that the wider the bleeding area was shorter than the shock duration time. Conclusion RT3D-CEUS can present a real-time dynamic bleeding and locate headstream of blood in renal trauma vividly and stereoscopically, and can be used to preliminarily evaluate the degree of ongoing hemorrhage in traumatic kidney.

BACKGROUND: It has been demonstrated that amyloid-beta 42 protein (Aβ42) immunization in transgenic mouse models of Alzheimer disease(AD)can induce specific Aβ42 antibody, clear Aβ from the brain, and thereby improve spatial learning and memory. It has been a promising treatment strategy for AD.OBJECTIVE: To explore the effect of Aβ42 and its subunit vaccines immunization on spatial learning and memory of APPSWE transgenic mice.DESIGN: A randomized controlled experiment with mice as subjects.SETTING: The brain research laboratory of the anatomy department in a the medical college of a univeristy.MATERIALS: The experiment was conducted in the Experimental Animal Center and the Anatomy Department of Sun Yat-sen University from April 2003 to February 2004. Thirty-two APPSWE transgenic mice of 5 months old were bought from Taconic Company, USA. The second generation of mice were successfully reproduced in the Anatomy Department. These mice were randomly assigned into four groups: control group, Aβ42 group, Aβ1-15group, and Aβ36-42 group. Each group contained 8 in each group.INTERVENTIONS: Aβ42 and its subunits combined with MF59 adjuvant were subcutaneously injected for fundamental immunity and then applied in nasal mucosa for intensified immunization. The immunization period was 8 months. Y-maze was used for behavior test before immunization and Morris water maze was used after immunization.MAIN OUTCOME MEASURES: Spatial learning and memory, mean escape latency, times of passing through the platform point, swimming distance percentage of the first quadrant, and swimming distance percentage of the 20% marginal area.RESULTS: The correct reaction times in Y-maze behavior test were 7.50 ±0. 81, 7.06 ±0.71, 7.19 ±0.91, and 7.50 ±0.86 respectively in the control, Aβ42, Aβ1-15, Aβ36-42 groups and there was no significant difference ( P ＞ 0. 05) . After immunization, the mean escape latencies in 8 units of localized navigation test were(67.3 ±2. 8) s, (23.6 ± 1.6) s, (26.4 ±2.0) s,and (36.5 ± 2.2) s. The results in three experiment groups were different from that in control group and there was no difference between the three experiment groups ( P ＞ 0. 05 ) . The mean times of passing through the platform point in the 4 groups were 0.71 ±0.29, 8.14 ± 1.37, 7.28 ± 1.34,and 3.29 ± 0. 67. Swimming distance percentage of the first quadrant in the4 groups were(24.3 ±2.9)%, (50.6±11.6)%, (49.9±9.3) %,and(35.4±7.0)% and the swimming distance percentages of 20%marginal area were (46.4 ± 7.3 ) %, ( 11.6 ± 3.9) %, ( 14.4 ± 2. 6) %, and (25.8 ± 3.3)%. The mice in three experiment groups showed increase in the times of passing through platform point, swimming distance percentage of the first quadrant, and decrease in distance percentage of 20% marginal area compared with control group. The results in three experiment groups were no significantly different( P ＜ 0. 05).CONCLUSION: Immunization with A342 and its subunits can effectively ameliorate impairment of spatial learning and memory in APPSWE transgenic mice.

ObjectiveTo understand the behavioral characteristics,strength on suicide ideation and mental disorder diagnosis among suicide attempers,so as to provide consultation for crisis intervention of suicide.Methods232 suicide attempters from emergency of 5 general hospital in south-west of Shandong province were enrolled.They were assessed using questionnaires on attempted suicide behaviors and scale on the strength of suicide ideation,and were diagnosed using the Structured Clinical Interview for DSM-Ⅳ Disorders axis Ⅰ for patient (SCID/I-P).Results( 1 ) In the total of 232 cases,female was more than male with the gender ratio of 2.87 (female vs male).The highest proportion rate (56.9％) existed between 16 years old to 35 years old.Oral application pesticide was the most commom suicide pattern (83.2％),91.4％ of the suicide attempt occurred in the their homes.The top three reasons leading to suicide were family contrary (61.2％),depressive mood (15.1％)and fail in love (9.5％).(2) In all cases,83.6％ did not think if they were found,84.1％ did not adopted any precaution measures,over 60.0％ did not tell anyone their attempted plans,and 90％ had no dying structions and /or dying testaments before their attempted behaviors.At the moment of attemp behaviors,62.9％ did not contact with someone.The 60.0％ of all the cases had wanted strongly to die,otherwise 7.3％ had wanted to manipulate others.(3) The diagnosis rate of mental disorder on DSM-Ⅳ was 45.3％,in which the mood disorder was most.ConclusionThere are no changes on the behavioral characteristics among the suicide attempters in the south-west rural area of Shandong province.Their strength of suicide ideation are moderate,and a certain proportion of suicide attempters may be impulsive suicide attempters.There is more relationship between mental disorder and suicide attempt.

AIM: To investigate the influence of EGb761 on NOS expression and survival of motoneurons after spinal root avulsion.METHODS: Eighty adult SD female rats were randomly divided into control and EGb761 groups. The C5-T1 nerve roots of right brachial plexus were avulsed and injection of 1 mL of either EGb761 25 mg?kg -1 ?d -1 or normal saline (ip) was performed everyday. The treated rats were killed 1 week, 2 weeks, 4 weeks and 6 weeks following avulsion. The cryostat sections of C7 segment of every rat were collected and carried with NADPH-d histochemistry plus neutral red counterstain. The difference of the numbers of both NOS-positive and survival motoneurons were quantitatively studied. RESULTS: Following avulsion, NOS was expressed in avulsed motoneurons at 1 week, reached to its maximum at 2 weeks and then decreased gradually from 4 weeks to 6 weeks. Motoneurons died from 4 weeks to 6 weeks. With EGb761 treatment, the number of NOS-positive motoneurons were decreased at each time point and the number of survival motoneurons was increased at each time point compared to control rats.CONCLUSIONS: EGb761 protected the spinal cord motoneurons from avulsion injury. This effect may be related to inhibition of NOS expression.