A new disease of Rhubarb occured in Gansu Province of China was reported.The disease appears along the veins of lower leaf surface of Rhuaarb (Rheum palmatum) with swelling,and shows a reddish-purple color at the beginning and turns pale brown late. On the leaf appears yellowish reticulated sppts, in Petioles the spots are tumourlike blisters arranged in rows.The growth of the smaller and in severe attacks the whole plant eventually withered.The causal pathogen was identified as a smut Thecaphora schwarzmaniana and seems to be the first reported case that occurs in China.Methods for its control are suggested.

Objective To study the clinical characteristics, surgical treatment and prognosis of thyroid carcinoma in children. Method The clinical data of 25 children with thyroid carcinoma undergoing operative treatment from 1980 to 2001 were analyzed retrospectively. Results 25 children all underwent surgical treatment .Of them,17 were papillary carcinomas,3 papillary carcinomas with follicular elements,3 follicular carcinomas,1 medullary carcinoma and 1 fibrosarcoma. 21 children were followed up periodically from 4 months to 18 years (average time 6years). There were two deaths in the followed-up period,1 died of pulmonary insufficiency in extensive pulmonary and cervical lymph nodes metastases two years after the operation; 1 died of fibrosarcoma recurrence. The other children were all alive in good condition. Conclusions Most of the thyroid carcinoma in children are papillary carcinomas, and the prognosis is usually excellent. Operation is the main therapeutic method. A proper surgical procedure is major approach in treatment. Re-operation is also necessary, and might get a long-term survival even if the patient has recurrent thyroid carcinoma with cervical lymph node metastases.

Objective To summarize the clinical experience of nasal endoscopic treatment for refractory epistaxis. Methods .A retrospective analysis was made on 258 patients with refractory epistaxis treated with intranasal endoscopic exploration and hemostatic treatment from January 1998 to December 2004 in this hospital. Results .Hemorrhage was found on the nasal septum and the lateral nasal wall in 118 and 47 patients, respectively. Nose bleeding resulted from intranasal tumor in 8 patients. The site of bleeding was not clearly identified in 85 patients. Of the 258 patients, 257 responded to the treatment (99.6%) and 1 died ( 0.4%).Recurrent bleeding occurred in 43 patients. The incidence of recurrent bleeding was significantly higher in patients with unknown bleeding sites than in clearly diagnosed patients (?2=17.689,P=0.000). Conclusions .The emphasis of nasal endoscopic treatment for refractory epistaxis should be laid on the initial management, during which the bleeding site should be carefully identified. For patients with repeated nose bleeding, a combination treatment, including endoscopic filling-up of the anterior nasal cavity, endoscopic embolization of anterior and posterior nose, or embolization of the internal maxillary artery, is necessary.

Objective To study knowledge,ability and related behavior of reproductive health among unmarried women migrants in Qingdao area,Shandong and evaluate effectiveness of basic intervention,including provision of free condom and health education and enhanced intervention,including healthy sex,contraception and health-care seeking behavior.Methods A community intervention trial was conducted among 1800 unmarried women migrants aged 18 -29 years in 10 workplaces of Qingdao.Basic intervention included health knowledge publicity and distribution of free condoms,and enhanced intervention included distribution of very important person (VIP) service cards,hotline telephone service,broadcasting digital versatile disc (DVD) of reproductive health knowledge,health lectures,peer education,and so on,in addition to health knowledge publicity and distribution of free condoms.Effectiveness was evaluated using questionnaire before and six months after intervention.Results After intervention,awareness of reproductive health and attitude to reproductive health improved significantly among the women migrants,as compared to those before intervention,particularly in knowledge of contraception and sexual health with enhanced intervention (with more than 20％ of them aware) ( P ＜ 0.01 ).About effectiveness on health-care seeking behavior,59.2％ (482/814) and 80.8％ (651/806) of the women migrants with reproductive tract infections would visit physicians after basic and enhanced intervention,as compared to those of 32.0％ (286/895) and 31.9％ (275/862) before them,respectively (P＜0.01).About effectiveness on contraceptive behavior,persistent and proper use of effective contraception methods improved significantly after intervention,as compared to that before it ( P ＜ 0.05 ),but with no significant difference between the two group with basic and enhanced intervention.Conclusions Both basic and enhanced intervention is effective and feasible in women migrants,more effective for enhanced one.

Objective To investigate the role of the extracellular signal-regulated kinases 1 and 2 (ERK1/2) in rotenone-mediated dopaminergic cell damage. Methods Neuronal rat adrenal pheochromecytoma(PC12) cells treated with rotenone were used as the cell model of Parkinson' s disease (PD). Cell viability of PC12 cells after exposure to rotenone was detected by MTT (methyl thiazolyl tetrazolium) method. Immanohistechemistry was used to detect the phosphorylation of ERK1/2 in cells exposed to rotenone. Western blotting was used to verify the phosphorylation of ERK1/2 and to observe the effect of PD98059, an inhibitor of the upstream mitogen activated protein kinase kinase (MEK) that phosphorylates and activates ERK1/2, on rotenone-induced ERK1/2 phosphorylation and cell viability.Results The viability (represented by A570 of PC12 cells exposed to 5 μmoL/L rotenone) declined with the increase of exposure time from 1 h to 24 h (%, 1 h :75.46±5.47, 2 h : 70.42±1.94, 4 h : 65.23± 0.96, 8 h : 59.04 ± 2.85, 24 h :29.64 ± 1.63, comparison between different time points(F=143.014, P=0.000) ; compared with control groups(100.00±2.89), q value: 17.07, 20.58, 24. 19, 28.50, 48.95 respectively, all P <0.01). After exposure to rotenone, phosphorylated ERK1/2 aggregated in the PC12 cells. Western blotting indicated that rotenone induced a biphasic phosphorylation of ERK1/2, which increased from 30 min after rotenone treatment, reached the peak at 1-2 h, decreased at 4 h, and increased again at 8 h, and disappeared after 16 h; PD98059 significantly inhibited ERK1/2 phosphorylation induced by rotenone, and attenuated cell injury examined at 1, 2 and 8 h. Conclusions Our study suggested that ERK1/2 activation plays a detrimental role in rotenone toxicity, and raised the possibility that abnormal patterns of ERK1/2 activation may contribute to dopaminergic neuronal cell death in PD.

This paper introduces the international experiments of risk management in clinical trails, responsibility of sponsor, responsibility of investigator and responsibility of other participators and to help to improve our management level of clinical trails.

Objective To prepare proanthocyanidins/bletilla striata polysaccharide/chitosan microspheres ( PC/BSP/CTS ) and the physic-chemical characterizations were investigated.Methods The PC/BSP/CTS microspheres were prepared by spray drying method.The morphology of PC/BSP/CTS microspheres was observed by Scanning Electron Microscopy(SEM), and its physic-chemical characteristics such as diameters, release in vitro, moisture content, swelling ratio, solid density were studied.ResuIts The PC/BSP/CTS microspheres were successfully prepared by spray drying method, SEM showed that PC/BSP/CTS microspheres had the spherical shape with smooth surfaces.The diameters of microsphere A, B and C were 10~20, 2~15, 10~25μm.The in-vitro release showed that the cumulative release of three kinds of microspheres A, B, C was 25.07 %, 38.83 %and 60.00 % in 24 h, which had no burst release, while with time prolonged to 48 h, the cumulative release was 28.89%, 43.17% and 72.86%, respectively.The results of moisture content, swelling ratio, solid density were 15.35% ~23.51%, 46.50% ~105.80%, 0.375 ~0.496. ConcIusion The PC/BSP/CTS microspheres are successfully prepared by spray drying method which possess good characteristics and sustained-release effect, which would be as a good pulmonary drug delivery system.

Objectives To explore the perceived stigma among family members of people with schizophrenia and to identify the influential factors related to perceived stigma in socio-demographic characters of family members and patient characters.Methods Total 127 family members of people with schizophrenia in a psychiatric hospital in Beijing were surveyed by the Perceived Devaluation-Discrimination Scale developed by Link.Results The mean score of the perceived devaluation-discrimination scale is 2.60±0.44.It was significantly higher than the 2.5 midpoint(t=2.53,P<0.05).Family member's perceived stigma was significantly different between different groups of residence area,education level,occupation and family income (P<0.05).Perceived stigma were not affected by patient characters (P>0.05).Family members'education level was the influencing factors of stigma,and the R~2 Square is 0.213.Conclusions The family members of people with schizophrenia suffered from high stigma.Education level of family member may be one of the influential factors.

Objective To explore the value of diffusion weighted imaging (DWI) in combination with susceptibility weighted imaging (SWI) in prognosis prediction of traumatic axonal injury (TAI).Methods A retrospective study of 75 patients with TAI was performed to analyze the clinical data and the follow-up prognosis in the 6 months after injury.The detection rate of TAI lesion by DWI,SWI and conventional MRI was compared.Multiple factors analysis applied logistic regression analysis to analyze the relationship between associated factors and prognosis.Results The average detected TAI lesions were (19.92 ± 8.62) by DWI and (22.17 ± 11.72) by SWI,which had no significant differences (t=1.24,P＞0.05),but there was a significant difference bettween by conventional MRI and by DWI or SWI (all P＜0.05).DWI was more sensitive to non-hemorrhagic lesions and SWI was more sensitive to hemorrhagic lesions.However,the lesions revealed by them existed the overlap of location and pathology of lesions.Patients with poor outcomes had more number of central lesions than those patient with good outcomes (t=2.455,P＜ 0.05).Logistic regression analysis revealed that the predictive accuracy provided by the combination with imaging and clinical factors was 95.7 ％.Conclusions DWI and SWI both are sensitive to TAI lesions,and have ability to detect the lesions with different pathological characteristics,separately.Accurate prognosis prediction for patients with TAI may be provided by the combination of clinical and imaging factors.

Objective To study the impacts of white matter ischemic lesions in various regions on the different cognitive domains of the patients. Methods 120 patients with white matter ischemic lesions were divided into subcortex,semi oval center,peri-ventricle,mixed regions according to MRI imaging (n=30 cases for each group). The 30 healthy control subjects were enrolled.Cognitive functions were evaluated by mini mental status scale (MMSE), montreal cognitive assessment (MOCA),object memory test (FOM),rapid verbal retrieve (RVR),block design (BD)and digit span (DS). Results The score of language in subcortical group (0.36±0.49) was lower than in control group (1.00±0.00) (P=0.011).There was no significant difference in RVR scores between mixed regions group and peri- ventricle group [(27.00 ± 9.22) vs. (32.30 ± 7.78) P =0.067],while RVR scores in mixed regions group (27.00± 9.22) were increased as compared with subcortex,semi oval center and control groups [(38.21±11.93),(35.94=9.53) and (37.00±3.16),respectively] (F=3.462,P=0.013).There was no difference,in BD scores between mixed regions group and semi- oval center group [(21.20± 9.21) vs.(25.63±12.10).P 0.070] but the mixed group scores were decreased as compared with subcortex, peri-ventricle, control groups [(37.14±10.43),(36.80± 14.27),(40.30±6.29),F=7.795,P=0.000].The scores of immediate verbal memory,calculation,short-term memory,visual spatial ability and executive were reduced in mixed regions group than in other groups (P=0.034,0.030,0.016,0.000).There was no difference in orientation score in MOCA and MMSE among the groups (P=0.256 and P=0.325).Conclusions Ischemic white matter lesions may lead to cognitive impairments depending on different region lesions. The obvious impact of peri-ventricle lesion is on memory, subcortex lesion on language,semi-oval center lesion on recognition and construction of images,while wide range of cognitive impairment may be attributed to the lesion in mixed regions.The scale of the MOCA is helpful and sensitive for identifying the presence of early cognitive impairment.