Objective To study medical fear and its influencing factors in hospitalized school-age children in Lanzhou area.Methods Children's Medical Fear Scale was used to investigate 110 cases of hospitalized school-age children,and the investigation result underwent analysis.Results The total score of children's medical fears was (50.43±7.34),the three items with the highest score among 30 items were surgery,death,being deprived of education,homework delay,surgery and death tied for first.Conclusions Medical fear of school-age children was related with age and gender,female was significantly higher than that of male.No relationship with the family education environment,duration of illness,area of residence.

OBJECTIVE To study the absorption,distribution and excretion of 2-fluorine-6-trifluoromethylpyridine (JJBD) in rats.METHODS [14C] Radioactivity isotope tracing method was used.Male SD rats were ig given a single dose of JJBD 10 and 100 mg·kg-1 (radioactivity:3.7 GBq·kg-1).Concentrations of rat plasma,tissue,feces,urine and bile were determined with a liquid scintillation counting (LSC) analyzer.Toxicokinetics (TK) parameters were fitted using WinNonlin.RESULTS TK parameters of JJBD 10 and 100 mg · kg-1 in male SD rats were as follows:area under the curve (AUC（0-t）) was 22 548±1579 and (203 395±27 586) h·iμg Eq.·L-1,half time (t1/2) was 15.8±1.0 and (14.1±0.9) h,peak time (Tmax) was 4.0±3.0 and (6.0±5.0) h,peak concentration (Cmax) was 1450±355 and (7776±1703) μg Eq.·L-1.JJBD was mainly distributed in fat,livers,kidneys,stomachs and intestinal walls.The concentration of JJBD in most of the tissues reached peak values after 4 h.However,JJBD couldn't be detected in the muscle,thymus gland,brain,gonad or spleen.Excretion rate of JJBD was 43.1％ in urine,29.7％ in feces and 9.97％ in cleaning solution within 0-168 h.JJBD could be excreted through bile at a rate of 28.1％ within 0-72 h.CONCLUSION JJBD can be absorbed immediately and excreted slowly in SD rat.There is no accumulation risk.The distribution of JJBD in vivo is very extensive,but cannot go through the blood-brain barrier.JJBD is mostly excreted through feces and urine.

The rats were assigned to blank control group, classical induction group, and drynaria total flavonoid group. Whole bone marrow culture method was applied to isolate and purify rats bone mesenchymal stem cells (BMSCs). Akaline phosphatase activity, calcium nodes, TGF-β1 and BMP-2 secretion in the process of bone mesenchymal stem cells osteogenic differentiation were detected. The results showed that compared to the blank group and classical group, drynaria total flavonoid promoted osteogenic differentiation accompanied with increased TGF-β1 and BMP-2 secretion (all P＜0. 05). Drynaria total flavonoid may promote osteogenic differentiation of BMSCs via upregulating TGF-β1 and BMP-2 expressions, and play an active role in the treatment of osteoporosis.

Objectives: To study the inhibitory effects of grape juice on human prostate carcinoma PC-3 cells and its possible mechanism. Method: PC-3 cells were treated with grape juice in different concentration(16, 32, 64 ?l/ml) and resveratrol for 48 h; and the proliferation of PC -3 cells were measured by growth curve and MTT assay. TUNEL was used to observe the morphology of apoptotic cells and flow cytometry to analyze the PC-3 apoptosis. Results: Resveratrol and grape juice could markedly inhibit the proliferation of PC-3 cells, and TUNEL positive cells were detectable. The percentages of apoptotic cells were 6.0%,18.5%,30.0%, 12.7% in experimental groups and resveratrol group respectively. The effect on PC-3 cells was enhanced with increasing amount of grape juice. The effect of low dose group was weaker than that of resveratrol group, but medium and high dose groups were stronger. Conclusion: The anti-prostate cancer effect of grape juice is not only related to resveratrol contained but also to synergism with other components, and its mechanism might be the induction of PC-3 cells apoptosis.

OBJECTIVE To understand the present situation of hand hygiene execution rate among clinical medical personnel,and discuss a series of scientific,reasonable and practical hand hygiene intervention methods,in order to elevate the hand hygiene execution rate among medical personnel.METHODS Using the self-designed questionoaires in combination with observation on hand hygiene process and investigation of hand hygiene knowledge level among medical personnel in various departments of different levels of hospitals to assess the hand hygiene execution rate.RESULTS The investigation indicated 76.00% medical personnel have had hand hygienic knowledge training,and referred in the stipulation health drafts,the hand hygiene execution rate was 50.00-70.00%.The hand health execution rate before contact with patients was 59.82%,and after contacts with patients was 77.97%;among department the hand hygiene execution rate before contact with patients was highest in the department of pediatrics(82.78%),the lowest was in emergency department(11.11%),after contact with patients the highest was department of infectiong(100.00%),and the larest was in the internal medicine department(39.93%).CONCLUSIONS Medical personnel's hand hygiene consciousness is still weak,with lacked hand hygiene related knowledge,it is necessary to summarize a set of reasonable effective intervention plans to elevate the hand hygiene execution rate,reduce the hospital infection percentage,and lower the patient pain and the economic loss.

Objective To study the expression and significance of apoptosis-related genes caspase-3,caspase-9,Bax and Bcl-2 in oral normal mucosa,oral simple hyperplasia,oral epithelial dysplasia and oral squamous cell carcinomas (OSCC) in Chinese hamsters.Methods The expressions of mRNA and protein of caspase-3,caspase-9,Bax and Bcl-2 in the oral normal mucosa,oral simple hyperplasia,oral epithelial dysplasia and OSCC tissues in Chinese hamsters were examined by immunohistochemistry and RT-PCR.Results During the process of oral carcinogenesis,the expression of Bcl-2 protein was significantly higher in OSCC than in oral normal mucosa,oral simple hyperplasia,and oral epithelial dysplasia (P<0.05).In dysplastic epithelia,the protein expressions of caspase-3,caspase-9 and Bax were more than that of normal epithelia,and along with the increased dysplasis,the expression level was decreased.Further analysis showed that expression of Bcl-2 was negatively related with the expressions of Bax,caspase-3 and caspase-9 (P<0.05).The result of RT-PCR showed that Bcl-2 was significantly increased in OSCC compared with normal mucosa,while the expressions of caspase-3,caspase-9 and Bax were decreased (P<0.05).Conclusions In the Chinese hamster squamous carcinoma,the expressions of caspase-3,caspase-9 and Bax are reduced and the Bcl-2 expression are increased,indicating that the expressions of caspase-3,caspase-9,Bax and Bcl-2 are closely related with the occurrence and development of oral squamous cell cancinoma.This study can offer some clues for gene therapy of OSCC,or can provide a reference for evaluating the biological characteristics and prognosis of OSCC.

Objective To study the expression and significance of EGFR, PDCD4, TGF-β1, Smad3, Smad7 in oral normal mucosa, oral simple hyperplasia, oral epithelial dysplasia and oral squamous cell carcinomas(OSCC).Methods Serum levels of EGFR, PDCD4 were measeured with ELISA in Chinese hamster during the oral mucosa carcinogenesis;The expressions of TGF-β1, Smad3, Smad7 in oral normal mucosa, oral simple hyperplasia, oral epithelial dysplasia and OSCC tissues were examined by immunohistochemistry.Results In the process of oral carcinogenesis,the expression level of EGFR increased significantly,while the expression of PDCD4 was decreased, the negatively correlation was evident between expression of these two proteins in ED and SCC.The expression of TGF-β1, Smad7 was higher in OSCC than in oral normal mucosa, oral simple hyperplasia, oral epithelial dysplasia(P < 0.05), while the expression of Smad3 was decreased.Further analysis showed the expression of TGF-β1 was correlated with the expression of Smad7.Conclusions The expressions of EGFR, PDCD4, TGF-β1, Smad3, Smad7 are closely related with the biological behaviors of oral squamous cell cancinoma.This experiment provides a theoretical basis for the study of oral squamous cell carcinomas mechanism research.So it has important significance for the development and prognosis of oral squamous carcinomaare.

Objective To describe an ideal technique to repair full-thickness lower lid marginal defects in a one-stage procedure. Methods The buccal rotation flap and the nasal septal chondromucosal flap were used in one-stage operation to repair full-thickness lower eyelid defect. Results Eleven patients including 6 male patients and 5 female patients underwent lower eyelid reconstruction since January 2000.The age ranged from 29 to 64 years with average 43. Seven patients with full-thickness lower eyelid defect were caused by basal cell carcinoma excision, while four patients were caused by trauma. All the fullthickness lower eyelid defects were reconstructed by using the buccal rotation flap and the nasal septal chondromucosal flap in one-stage operation. All the flaps survived completely after operation. There were no other complications excepting that two patients developed to mild lower eyelid retration after six months. Conclusion The technique consisting of the buccal rotation flap and the nasal septal chondromucosal flap is a simple and useful alternative procedure to close full-thickness defects in the lower eyelid.

OBJECTIVE: To investigate the effects of different dose compatibility of Scutellaria baicalensis-Rheum palmatum-Coptis chinensis based on Sanhuang Xiexin decoction (shorted for Xiexin decoction) on dissolution rate of baicalin and baicalein, and to provide reference for studying chemical mechanism of TCM compound dose composition compatibility. METHODS: HPLC method was used to determine the contents of baicalin and baicalein. By fixing the dose of S. baicalensis (3 g), using the dose of R. palmatum and C. chinensis as factors, dissolution rate of baicalin and baicalein as response value, two-factor and five-level central composite test was designed. The optimal dose compatibility of S. baicalensis-R. Palmatum-C. chinensis was optimized by response surface method, and compared with the dissolution rate of baicalin and baicalein in classic dose Xiexin decoction (S. baicalensis 3 g, R. Palmatum 6 g, C. chinensis 3 g). RESULTS: When the doses of S. baicalensis, R. palmatum, C. chinensis were 3, 1. 76, 0. 17 g, total dissolution rate of baicalin and baicalein was the highest in extract. The average total dissolution rate of baicalin and baicalein in validation test was 21. 89％ (RSD=0. 46％, n=3),and the relative error was 2. 88％ with the predicted value of 22. 54％. Compared with the classical dose of Xiexin decoction, the total dissolution rate of baicalin and baicalein in the optimum dose of S. baicalensis-R. Palmatum-C. chinensis in extract was increased by 47. 21％. CONCLUSIONS: The different dose compatibility of S. baicalensis-R. Palmatum-C. chinensis based on Xiexin decoction influence the dissolution of baicalin and baicalein to certain extent. When the doses of S. baicalensis, R. palmatum, C. chinensis are 3, 1. 76, 0. 17 g, dissolution rate of baicalin and baicalein are higher than that of classic dose.

Objective To establish the expression profiles of differentially expressed miRNA and mRNA in oral squamous cell carcinoma(OSCC)and to investigate the roles of miRNA and mRNA associated with the occurrence and development of OSCC. Methods The expression profiles of miRNA and mRNA were constructed using a new generation of high-throughput sequencing techniques. The miRNA and mRNA associated with the occurrence and development of OSCC were predicted by Gene Ontology enrichment analysis and KEGG pathway analysis. Results We successfully constructed the differentially expressed miRNA and mRNA profiles of Chinese hamster buccal pouch squamous cell carcinoma. 11 known and 3 novel significantly differentially expressed miRNAs and 194 differentially expressed mRNAs were found. A miRNA can regulate multiple mRNAs, and multiple miRNAs can control one mRNA. Conclusions Differential expression of miRNA play a an important role in the carcinogenesis and development of OSCC through regulating mRNA and forming a complex regulatory network. It provides theoretical data for the occurrence,pathogenesis,clinical treatment and prognosis of OSCC.