Based on traditional Chinese medicine theory and clinical experience, traditional Chinese herbal drug toxicity has its own special connotation. From the perspective of history and logic, the different comprehension of toxicity between Western medicine and traditional Chinese medicine was discussed after retracing the meaning of "drug toxicity" in traditional Chinese medicine. The authors suggest that it's not feasible to study the Chinese medicine coping mechanically and applying indiscriminately the concept and the research idea about modern drug toxicity since there is different understanding of "drug toxicity" between traditional Chinese medicine and Western medicine. Many control elements are involved in the use of traditional Chinese herbal drugs, and Chinese drug components and actions are complex as compared with Western drugs. More and more drugs with toxicity will be found due to the relativity of drug toxicity. Currently, the study of Chinese drug toxicity should pay more attention to the relation between the toxicity and Chinese drug nature, compatibility and the corresponding disease or syndrome pattern after making definition of Chinese drug toxicity and its connotation.

Objective: To investigate the mechanism of the effect of Linweidihuang Pills on diabetic neuropathy in rat. Methods: The diabetic rats were induced by alloxan. Serum glucose was tested by glucose oxidase and sciatic nerve sorbitol was determined by GC. Results: After Liuweidihuang Pills,0.5～2g/kg taken orally for 3 months, the level of sciatic nervous sorbitol and serum glucose in rat decreased significantly and the results showed certain dose effect relationship.Conclusion: Liuweidihuang Pills can controll diabetic neuropathy by inhibiting sorbitol biosynthesis.

Cerebral vasospasm is one of the most severe complications of subarachnoid hemorrhage. Its incidence is as high as 30-90%. It often causes severe regional cerebral ischemia or delayed ischemic brain damage, even resulting in cerebral infarction, and it thus becomes the primary cause of mortality and disability. In recent years, with the development of studies, people have realized that the oxyhemoglobin, inflammatory reaction, accumulation of vasoconstrictive substances, apoptosis, blood hypercoagulability and blood vessel cell proliferation play important roles in the development of cerebral vasospasm. Although its mechanism remains unclear, better effects have been achieved by using related treatment methods according to the available pathogenesis.

Apoptosis ; Humans ; Periodontitis ; pathology

Objective To evaluate the investigation outcome of eliminating iodine deficiency disorders(IDD)in Ya'an city of Sichuan province,and to master the current situation of IDD in the whole city.Methods In 2009,according toCounties'Assessment Guideline in Sichuan for Implementing the Measure to Eliminate Iodine Deficiency Disorders,assessments were conducted.At county level,composite score was given to collected data of the eight counties(districts)and monitoring data of household iodized salt were statistically analyzed.A township (town)was randomly selected by east,west,south,north and center locations,respectively.One primary school was randomly selected in each selected township(town),eighty children aged 8 to 10 in each selected school were checked of their thyroid by palpation(WS 276-2007)and urinary iodine level of20 children among them was measured by As3+_Ce4+ catalytic spectrophotometry(WS/T 107-2006).Thirty fifth-grade students and 10 housewives lived around school were asked to take a questionnaire survey.Results Average score of the 8 counties(districts)was 89.96,ranged from 85.42 to 92.90.The coverage rate of iodized salt of household was 100.00%(2328/2328),rate of qualified iodized salt was 97.98%(2281/2328).and consumption rate of qualified iodized salt reached 97.98%(2281/2328).The goiter rate of children aged 8-10 was 0.91%(33/3620),median urinary iodine was 235.85μg/L,and 1.50%(12/800)of child's urinary iodine was less than 50μg/L.The rate of passing a knowledge questionnaire survey of the fifth-grade students and women was 92.33%(1 131/1225)and 9413%(397/421),respectively.Conclusions Ya'an city in Sichuan province has reached the goal of eliminating iodine deficiency.disorders,but there is a coexist trend of IDD and iodine excess.They should pay attention to the daily consumption of iodized salt in the future;sustained elimination of IDD can be reached only by iodine supplementation scientifically.

Head and Neck Neoplasms ; Humans ; Paraneoplastic Syndromes

Colorectal cancer is a common malignancy in China.The incidence of it showed an increasing trend with the economic development,living standards improvement and lifestyle changes.The traditional treatment methods include surgery,radiotherapy and chemotherapy.In recent years,hyperthermia has become a method for treating tumor.Hyperthermia kills tumor cells by thermal effect and no-thermal effect.Not only does it have a direct therapeutic effect on tumor cells,hyperthermia also has some synergy combined with radiotherapy and chemotherapy.Hyperthermia combined with conventional therapy can improve the local control rate and extend survival for patients.In this paper,the efficacy of hyperthermia has been reviewed,combined with a variety of treatment methods for colorectal cancer in China.

To establish a spectrophotometric method for detecting selenium in drinking water,some subjects,such as the features of absorption spectrum of the reacting product of selenium and diaminonaphthalene,disturbance of other coexisting ions,detection range,detection limit,precision and accuracy were studied.The results showed that:the maximum absorption wavelength of the reacting product of Se4+and 2,3-diaminonaphthalene was 377 nm,the detection limit,molar absorptivity (ε377) and linear range of this method was 0.018 μg/50 ml,2.7×104 L/(mol·cm)and 0.2～10 μg/50ml respectively.The regressive equation was A＝0.077C＋0.014 with a correlation coefficient r value of 0.9999.The relative standard deviation (RSD) and recovery rate were ＜54.7% and 96.5%～106% respectively.This method was simple,sensitive and accurate,could meet the requirement of the routine monitoring of selenium in drinking water.

CdSe/ZnSquantumdots(QDs)werepreparedandcovalentlylinkedtoanti-katacalcinmonoclonal antibodies. After modification, the QDs' maximum emission wavelength was shifted to 625 nm from 620 nm while maintaining the spectral properties. Then the QDs labeled lateral flow strip and corresponding fluorescence measuring instrument were designed and fabricated. To reduce the cost of strip by reducing the amounts of monoclonal antibodies, appropriate amounts of QDs labeled monoclonal antibodies were sprayed on the conjugation pad, with just one test line on the strip but without the control line. Parameters of the strip were optimized by measuring the signal to noise ratio. By using the strip and fluorescence measuring instrument, procalcitonin (PCT) could be detected in 20 min, and the quantitative detection range was 0. 2-100 μg/L with sensitivity of 0. 1 μg/L. A total of 22 blood samples were measured by both our method and the commercial instrument used in the hoptital. The results were consistent for their Pearson correlation coefficient (0. 9995) and Kolmogorov-Smirnov test (Sig=1. 0). The rapid quantitative detection method for PCT is of great importance to quantitative detection of bacterial infection and rational usage of antibiotics clinically.

School of public health of Qiqihar Medical University has integrated the concept of talent cultivation “University excellence, big medicine sincere” and the talents training goal of “three orientation” with CDIO engineering education mode. From the philosophy and mode of engineering education, the school has carried on the comprehensive reform on training target, training model, training plan, course setting, innovative practice system, the teaching reform and assessment methods.“Target management stage” training model has also been formulated and implemented to explore the education model of training students' comprehensive quality and ability which can not only meet the social needs but also improve the various aspects throughout their college.