Objective To study the effects of industrial wastewater containing chromium from Anyang Bicycle Works (ABW) on the mutagenicity of ground water and drinking water. Methods The ground water samples were collected from wells located on the southwest of the pollution source of ABW, near the gate of ABW(A) and at a distance of 60 m from the east of ABW(B) respectively, and also from the following sampling points closely located along the lower reach of sewage ditch: cigarette work(C), iron alloy works(D), match works(E), chemical and chemical fiber works(F). The raw water and finished water samples were collected from water plant. The contents of chromium(Cr6+) in water samples were measured and the mutagenicity of the water samples were tested by Vicia faba root tips cell micronucleus test. Results The contents of Cr6+ in ground water samples showed a decreaseing trend (0.358 5-0.010 0 mg/L) with the increasing distances from the sampling points to the pollution source of ABW, the order of which was the following: A, B, C, D, E, F. The contents of Cr6+ in ground water samples collected from the gate of ABW and the location at a distance of 60 m from the east of ABW exceeded the related standard 6.17 and 2.08 times respectively.The contents of Cr6+ in raw water and finished water samples were 0.0123 and 0.0095mg/L respectively.All of the water samples except that from the chemical and chemical fiber works showed higher micronucleus rates in different degree compared with that of negative control. Statistically significant higher micronucleus rate was only observed in water sample from match works compared with that of negative control (P

Objective To assess the value of CT in the diagnosis of PRF,and analyze the reason of misdiagnosis. Methods Retrospectively analyze the CT data of ten patients with retroperitoneal fibrosis,which were confirmed by the clinical pathology.All the patients underwent CT scan and enhanced scan.Two experienced physicians using the blind method to evaluate the location, boundary, density, invasion on the surrounding tissue and enhancement of retroperitoneal fibrosis lesions respectively.Results All patients with CT scan findings were retroperitoneal irregular-shaped soft tissue lesions,which was similar to muscle density.6 cases with surrounding the retroperitoneal vessel, 2 cases with expansion and hydrops of renal pelvis and ureter.By enhanced scan,9 cases with different degrees of enhancement,1 case without obvious enhancement.6 cases were misdiagnosed as retroperitoneal schwannoma or lymphoma. Conclusion CT can show the characteristics of retroperitoneal fibrosis. Comprehensively analyze various imaging findings is helpful for the diagnosis of retroperitoneal fibrosis. Misdiagnosis reason is mainly due to retroperitoneal fibrosis is a rare disease,and understanding of this disease in imaging findings is insufficient in the daily work.

The study analyzed the compositions of Syngnathus acus L and discussed its anti-fatigue effect. Prepared lipid and enzymatic hydrolysate. The animal experiment methods are such as followed-(1)Enduring capacity experiment. (2)Determining LA (Lactic Acid) concentrations before and after swimming sports. (3)Determining the content of muscle glyco-gen and hepatic glycogen of mice. These experiments showed that lipid and enzymatic hydrolysate are both able to prolong swimming time of mice (P

Quality assurance system for postgraduate education including the implementation　system,monitoring and information gathering and feedback system,resource guarantee system was established according to the characteristics of postgraduate education and combined with theory of total　quality management.The implementation scheme for total quality management-oriented postgraduate education was formulated from the aspects of training plan,objective requirements,etc.

Objective To investigate the effects of splenctomy on the idiopathic thrombocytopenic purpura (ITP) patients. Methods 9 patients with ITP were involved in the present study,who were performed with splenecto-my because of refractoriness, contraindicatiun and intolerance during corticosteroids therapy. Results The average platelet count of the patients before operation was 35×109/L,while the first,4th and 7th day after operation,the aver-age platelet count was 98×109/L, 179×109/L and 235×109/L. After follow-up for 6 months,there were 7 cases having marked improvement, and the total effective rate was 88.9%. Conclusion Splenectomy is a recommendable method for ITP, expecially for those are inefficient,incompatible and intolerated to continually pharmacotherapy.

Objective: To approach the effects of glutamine supplementation on plasma and muscle levels of glutamine, and the activities of tissue glutamine synthetase and glutaminase after high intensity exercise. Methods: BAL/C mice were randomly divided into high intensity exercise(2% body weight load) and control groups to swim 2 hours per day for 8 weeks. Results: To compare with control group, high intensity exercise reduced glutamine levels in plasma and muscle by 74% (P

OBJECTIVE:To investigate the improvement effects of andrographolide dripping pills combined with Danxi yup-ingfeng granules on immunologic function of children with allergic rhinitis(AR). METHODS:Two hundred and eight AR children were randomly divided into control group,observation groupⅠ,observation groupⅡ,observation groupⅢ,with 52 cases in each group. Control group was given Loratadine syrup 10 mL,qd;observation groupⅠwas given Danxi yupingfeng granules 15 g,bid+Andrographolide dripping pills 0.6 g,tid;observation groupⅡwas given constant dose of Andrographolide dripping pills;observa-tion groupⅢwas given constant dose of Danxi yupingfeng granules. Four groups were treated for 2 weeks. 2 weeks later,they were given Loratadine syrup orally if the symptom appeared again. The levels of IgE and Th1/Th2 were compared among 4 groups be-fore treatment,1,2 weeks after treatment,3 months after the end of treatment. The children receiving Loratadine syrup orally due to the recurrence of AR 3 months after the end of treatment were observed. RESULTS:Before treatment,there was no statistical significance in serum levels of IgE and Th1/Th2 among groups(P>0.05). One week after treatment,serum levels of IgE and Th1/Th2 were improved significantly,with statistical significance (P<0.05);but there was no statistical significance among 4 groups (P>0.05). 2 weeks after treatment,serum levels of IgE and Th1/Th2 were improved significantly,and the observation groups were significantly better than the control group,with statistical significance(P<0.05). Three months afterthe end of treatment,serum lev-els of IgE and Th1/Th2 in observation group were improved significantly and better than control group,with statistical significance (P<0.05);there was no statistical significance in control group,compared to before treatment(P>0.05). The recurrence rate of ob-servation groupⅠwas significantly lower than that of observation groupⅡ,observation group Ⅲ and control group,with statistical significance(P<0.05). No obvious ADR was found in 4 groups. CONCLUSIONS:Andrographolidume dripping pills combined with Danxi yupingfeng granules can effectively improve immunologic function of AR children and reduce recurrence rate with good safety.

0.05] between group L and other two groups.Conclusion PCEA with 0.125% levobupivacaine containing fentanyl 2 ?g?ml-1 provides adequate pain relief after cesarean section with recovery of motor function similar to that with 0.2% ropivacaine and 0.125% racemic bupivacaine.

Aim To establish a reliable method for the culture of mouse smooth muscle progenitor cells and in-vestigate their migration ability .Methods Mesenchy-mal stem cells from compact bones were obtained from C57 BL/6 mice and stimulated with PDGF-BB to in-duce these cells to differentiate into smooth muscle pro-genitor cells. Morphological analysis , immunocyto-chemical and flow cytometric analysis were used to i-dentify the cell type and the migration ability was in-vestigated by the transwell system and flow cytometry . Result After PDGF-BB stimulation for 7 days, the cells showed spindle shape and started to express α-SMA as demonstrated by immunocytochemistry .After 21 days induction , Flow cytometric analysis revealed that over 70%of the cells expressed both CD 34 andα-SMA and 58.5%of the cells expressed SM-MHC.Mi-gration assay showed that the smooth muscle progenitor cells from culture could migrate in vivo and in vitro. Conclusions The culture of smooth muscle progenitor cells from compact bone-derived mesenchymal stem cells is easily operated with high yield rate and shorten culture period . Obtained smooth muscle progenitor cells from culture could migrate in vivo and in vitro, which is suitable for the mechanism studies .

Objectives: To study the executive function (EF) profiles in children with ADHD. Methods: 1.We used some neuropsychological tests,including Stroop test, visual and auditory Go/No-Go tasks, digits reciting inverse, delayed spacial position memory span test, tower of London (TOL), tail making test (TMT),to evaluate the capacity of response inhibition, phonological working memory, visual-spacial working memory, planning and set-shifting of subjects. Results: 1.The ADHD children spent more time to accomplish color naming when the word color was inconsistent with the word meaning than normal control (NC) in Stroop test(p﹤0.05). 2.The ADHD children made more errors than NC in both visual and auditory Go/No-Go test(p﹤0.01). 3.The scores of digits reciting inverse was lower in ADHD than NC(p﹤0.01). 4.The representation of ADHD was poorer than NC in delayed spacial position memory span test(p﹤0.01). 5. In TOL test, the ADHD children spent more time in all of two-move, four-move and five-move tasks than NC, and broke rules more frequently than NC(p﹤0.05). 6.In TMT, the ADHD children spent more time and made more errors on part B than NC(p﹤0.05), and there was no significant difference on part A (p﹥0.05). Conclusions: The obvious impaired executive functions are found in children with ADHD, involving poor response inhibition,impaired working memory, dysfunction of planning and set-shifting.