Mycotoxins,secondary metabolites produced by certain fungi,have become one of the most harmful factors that affect the clinical safety of medicinal herbs that probably can be contaminated by harmful toxins generated from fungi in the whole process from planting to clinical use. Therefore,more toxicological research of mycotoxins,a better knowledge of the pathogenesis and quick detection with sensitivity and accuracy will play an important role in targeted therapy of poisoning by mycotoxins and early warning . In this paper,the current status of mycotoxin contamination in medicinal herbs was ana?lyzed,and the progress of toxicological study on common contaminants was reviewed. In view of the high toxicity of toxins,the strategy of ″Prevention First″ is highly desirable. Hence,the development of rapid detection of typical mycotoxins was systematically discussed. The review was intended to provide ref?erence for ensuring clinical safe administration of medicinal herbs and for reducing the risk of mycotoxin poisoning.

Objective To analyze the risk factors for ventilator-associated pneumonia(VAP) in the intensive care unit(ICU) of a hospital,and provide theoretical reference for preventing and controlling VAP.Methods ICU patients receiving mechanical ventilation for more than 48 hours between October 2013 and December 2014 were monitored by targeted monitoring method,risk factors for the occurrence of VAP were analyzed.Results A total of 483 patients received mechanical ventilation for more than 48 hours,76 (15.73％) of whom developed VAP;the overall ventilator days were 5 347 days,incidence of VAP was 14.21 per 1 000 ventilator days.Univariate analysis showed that groups of gender,age,length of hospital stay,and duration of artificial airway were all significantly different,VAP rate in male patients was higher than that in female patients(x2 =9.838,P＜0.01);VAP rate was highest in patients aged 41-70 years(x2 =10.242,P＜0.01),followed by patients aged≥71 years;VAP rate were relatively higher in patients with longer length of hospital stay and longer duration of artificial airway(x2 =59.533,P＜0.01;x2 =74.215,P＜0.01,respectively).Conclusion Incidence of VAP in the ICU of this hospital is higher,especially in male patients,patients aged 41-70 years,as well as patients with long length of hospital stay and long duration of artificial airway.

Objective To improve health care workers’(HCWs)infection prevention and control consciousness through carrying out catheter-associated urinary tract infection(CAUTI)prevention and control project,and imple-ment prevention and control measures in practical work.Methods Diagnostic criteria of CAUTI issued by the U.S. Centers for Disease Prevention and Control/National Healthcare Safety Network were adopted,from October 2013 to September 2014,monitoring was conducted on CAUTI in patients with indwelling urinary catheters for >2 con-secutive days at different types of ICUs in hospitals participated in the project .Results A total of 14 124 CAUTI cases were collected,410 patients developed CAUTI,urinary catheter usage rate was 79.33%(203 114/256 042), incidence of CAUTI was 2.02‰(410/203 114),urine specimen detection rate was 46.52%(6 570 /14 124).The detection rate of urine specimens increased from 37.24% (the fourth quarter of 2013)to 49.76% (the third quarter of 2014).Of prevention measures,the difference in the indication of catheterization was significantly different(P <0.01).Conclusion Through the development of competence building project of healthcare-associated infection pre-vention and control,prevention and control of CAUTI has achieved good intervention effect.

Objective To explore the relation among depression,hopelessness and suicide risk,as well as the mediating effect of hopelessness between depression and suicide risk.Methods 1 381 students were recruited from five junior middle schools in Linyi by using cluster random sampling.They were investigated with General Situation Questionnaire,Scale for Suicide Ideation(SSI),Beck Hopelessness Scale (BHS) and Beck Depression Iventory (BDI).Results Suicide risk in junior middle school was significant positively correlated with depression and hopelessness (r=0.43 and 0.64 respectively,P＜0.01).Hopelessness partly mediated the relationship between depression and suicide risk (55.8％).Furthermore,hopelessness showed partial mediating effect on the relationship between depression and suicide risk in boys (42.7％) and in 7th Grade students (29.9％),and also complete mediating effect in girls (74.1％) and in 8th Grade students (95.3％).Conclusion The suicide risk in middle school students increase with the increasing of the severity of depression and hopelessness.The hopelessness plays different mediating effects on relation between depression and suicide risk in students with different gender and grade.

To retrospective analyze the clinical profiles of 80 patients undergoing thoracotomy with protection of intercostal nerve versus traditional method.The doses of narcotics of two groups were (12 ± 5)and (43 ± 11) mg respectively.The postoperative levels of visual analogue score (VAS) and such potential complications as pneumonia,atelectasis and paraesthesia were examined (P ＜ 0.01).Protective technique of intercostal nerve during thoracotomy could effectively relieve postoperative chest pain,reduce the dosage of narcotics and lower the occurrence of lung complications.

Objective To know the blood lead level of children in Handan city and the influence factors. Methods In Oct. 2004,211 children aged 2-6 years,living in Handan city for more than one year and without eliminating lead medicine treatment in recent three months,were chosen from a kindergarten. The blood lead was determined by WFC atomic absorption spectrometer. The influence factors were investigated by questionnaire.Results The blood lead level was(89.2?13.6) ?g/L,the prevalence of lead poisoning was 11.85%,no significant difference was seen between boys and girls. As for the blood lead level,the children living in the industrial areas or near traffic road was higher,the children living in the newly decorated house was higher,the children often eat preserved eggs was higher,the children whose parents engaged in the work of lead exposure was higher,the children whose parents smoke heavily at home everyday was higher,the children whose parents had lower education was higher. Conclusion More attention should be paid to prevent and control child lead poisoning in Handan city.

Objective To evaluate the expression level of cathepsin D protein in nasopharyngeal carcinoma (NPC) and to determine its relationship with clinic pathological characters. Method Immunohistochemistry was performed to detect the expression of cathepsin D in 72 cases of primary NPC and 28 cases of normal nasopharyngal epithelial tissue ( NNET), and the correlation of its expression level with clinicopathologic features and clinical outcomes was evaluated. Results Significant down-regulation of cathepsin D was observed in NPC versus NNET(x2 = 13. 55, P ＜0. 01 ). In addition, cathepsin D down-regulation was significantly correlated with poor histological differentiation ( x2 =41.47, P ＜0. 01 ). Type Ⅰ and Ⅱ (well-moderately differentiated) NPC showed more intense immunoreactivity of cathepsin D compared with type Ⅲ (poorly differentiated) NPC. Cathepsin D up-regulation was significantly correlated with clinical stage, recurrence, and lymph node and distant metastasis (x2 = 13.43,22. 86,21.61,14. 32, P ＜0. 01 ).Tumors with cathepsin D up-regulation tended to have advanced clinical stage, frequent recurrences, and metastasis to lymph node and distant organ. Conclusion The expression of cathepsin D was closely related with the differentiation, clinical stage and pathological grade of NPC. Cathepsin D could be served as an effective differentiation marker for the histopathological grading of NPC and a possible therapy target.

Objective:To evaluate the expression and relationship of Ki 67 and microvessel density (MVD) in transitional cell carcinoma of bladder (TCC).Methods:With anti Ki 67 McAb and anti FⅧRAgMcAb,immunohistochemistry was used to examine the expression of Ki 67 and MVD in 65 cases of TCC,and 8 cases of normal bladder tissue as controls.Results:It was shown that the expression of Ki 67 in TCC was positively correlated to tumor MVD.These two indices increased with the escalation of the tumor grade ( P

Objective To observe the structure feature of cultured mesothelial cells, determine its anticoagulant and fibrinolytic activity, and provide a basis for selection of artificial vascular prostheses coating cells. Methods The greater omenta, aortae and subcutanenous connective tissue of SD rats have been taken for mesothelial cell, endothelial cell and fibroblast culture. The cultured mesothelial cells have been observed by light microscopy and electron microscopy. The 6 keto PGF 1? (the metabolite of prostacyclin)concentrations in medium were measured by rodioimmunoassay, Tissue plasminogen activator(t PA) activity was detected by chromogenic assay. Results The cultured mesothelial cells have many structure feature similar to endothelial cells. The average concentration of the 6 keto PGF 1? in mesothelial cell culture was higher than that in endothelial cells and fibroblasts culture, the t PA activity in mesothelial cells culture was also higher than that in fibroblasts, but there wasn't a significant difference between mesothelial cells and endothelial cells.Conclusion Mesothelial cells have similar structure and functions comparing with endothelial cells. It may be an ideal coating lining for artificial vascular impants. [

Kennedy disease,a motor neuron disease,is an adult onset form of spinal and bulbar amyotrophy characterized by the damage of low motor neuron and uncompleted androgen insensitivity syndrome.So far,there is no effective treatment.This article is intended to provide neurologist with information about Kennedy disease in epidemiology,etiology,pathogenesis,clinical feature,treatment and so on.