Objective To study the relationship between cognitive dysfunction and depression and event-related potential(ERP) in patients with silent brain infarction(SBI).Methods 68 SBI patients were tested by the Hamilton Depression Rating Scale for Depression(HAMD),scale of mini mental state examination(MMSE)and ERP;and the results were compared with those in 55 patients without cerebral infarction(control group).Results In the SBI group,the HAMD score was ≥17 in 31(45.6%)cases(depression subgroup)and

OBJECTIVE:To study the adsorbability of plastic transfusion bottle and infusion set to diazepam. METHODS:With the reference of plastic-bottled 5% glucose injection,HPLC was used to determine the changes of mass concentration of diazepam adding into plastic-bottled 5% glucose injection at different time;disposable plastic infusion set was connected to simulate intrave-nous infusion and determine the changes of mass concentration of diazepam in the liquid effluent at different time. RESULTS:The mass concentration of diazepam in glass infusion bottles group was higher than in plastic transfusion bottles group. The adsorbabili-ties of solutions showed the strongest at the time of 15-20 min. The mass concentration of the effluent liquid from the glass bottle group was about 80% of the original concentration and plastic bottle group was about 67%. As the time went on,the adsorbability was gradually saturated at 60 min and the concentration rose again;the mass concentration of the effluent liquid from the glass bot-tle group returned to 95%of the original concentration at 80 min and the plastic bottle group was about 75%of the original concen-tration. CONCLUSIONS:Both plastic infusion bottle and infusion set have strong adsorbability to diazepam. It is suggested that the dosage of diazepam should be increased by 25% to 33% while plastic-bottled 5% glucose injection is used as solvent for intrave-nous drip.

There is a long history of Toad venom in the treatment of cancer in China.Bufalin,extracted from Toad venom,is one of the biologically active compounds of anticancer.We elaborate the molecular mechanism of bufalin on anticancer activity from several aspects such as inducing cell apoptosis and differentiation,inhibitting cell proliferation and angiogenesis,enhancing the sensitivity of chemotherapeutics,which can provide the basis for in-depth study of Toad venom and its development and clinical medication.

ObjectiveTo search for the optimum external masking time and tonal models for patients with tinnitus.MethodsTwenty-seven patients with cochlear tinnitus were selected respectively from three different out-patients departments and divided into three groups. Nine patients in every group were treated with different masking parameters according to factorial design which had three masking noises, i.e. narrow band noise (NBN), wide band noise (WBN), speech noise (SN),and three masking time ranges, i.e. 15,30,45 minutes. The results before and after treatment were compared and analysed with analysis of variance (ANOVA). ResultsThe treatment effect when masking for 15 minutes was worse than that for 30,45 minutes, but there was no difference between 30 and 45 minutes. The NBN had the best effect when tinnitus signal was single, the WBN was effective for tinnitus with multiple sounds. ConclusionNBN or WBN masking for 30 minutes showed better therapeutic effect.

Objective To explore the content and gene expression of endothelial nitric-oxide synthase (eNOS) in heart of hyperlipidemia apoE-/- mice. Methods apoE-/- mice were fed with high fat diet as high-fat diet group (n= 7) and normal fat diet as control group (n = 6) for 12 weeks. Serum lipid profiles including total cholesterol (TC), triglyceride (TG), high density lipoprotein (HDL) and low density lipoprotein (LDL) were detected, eNOS mRNA expression in heart were determined by Real-Time RT-PCR, as well as protein expression by immunohistochemistry. Results Levels of serum TC, TG and LDL clearly increased in high fat diet group, while HDL decreased (P< 0. 01). mRNA and protein expression of eNOS in heart reduced in high fat diet group(P<0.01). Conclusions High fat diet may lead to hyperlipidemia in apoE-/- mice, which may down-regulate eNOS expression and decrease eNOS content in heart.

Objective To evaluate the therapeutic effect of long-pulsed Nd:YAG 1064 laser on hyperplastic scars by using a rabbit ear model.Methods Five female and five male New Zealand long-ear white rabbits weighting 2.0-2.5 kg were used in this experiment.Four square full-thickness skin wounds sized 1.5 cm x1.5 cm were created on the ventral surface of each ear to develop a model of hyperplastic scar.Finally,a total of 74 hyperplastic scars developed on the 80 wounds,and the scars on the left and right ears served as the control (unirradiated) and treatment (irradiated with long-pulsed 1064 nm Nd:YAG laser) group,respectively.After 30 days of irradiation,the color and texture of scars were observed and the scar thickness was measured by color Doppler ultrasonogTaphy.Then,the scars were harvested followed by the analysis of density of fibroblasts and microvessels as well as the changes in collagen fibers in scars by HE staining,CD31 staining and Masson staining,respectively.Results A decrease was observed in the color,hardness and thickness of scars in the irradiated ears compared with the unirradiated ears.The average thickness of scars,microvessel density and fibroblast density in scars were significantly lower in the treatment group than in the control group(2.137vs.3.089 am,t=5.72,P<0.01;38.333/mm2vs.68.056/mm2,t=4.93,P<0.01;166.940/mm2vs.355.000/mm2,t=13.36.P<0.01).Masson staining revealed a disorganized arrangement of collagen fibers in the control group but a sparse and regular alignment in the treatment group.Conclusion Long-pulsed 1064 nm Nd:YAG laser may promote the shrinkage and suppress the hyperplasia of scars.

Objective To research the promoter methylation level of RAS association domain family 1A (RASSF1A) and RASSF1A gene mRNA expression level in cervical cancer tissue, and to analyze their relationships with clinicopathological parameters of cervical cancer and the clinical significance.Methods The RASSF1A gene promoter methylation and RASSF1A gene mRNA were detected respectively by methylation specific PCR and quantitative real-time PCR method in 40 cases of cervical cancer tissues and corresponding adjacent tissues.Results RASSF1A mRNA expression level in cervical cancer (0.26±0.05) was significantly lower than that in adjacent tissues (0.28±0.03), and the difference was statistically significant (t=2.27, P=0.026).The methylation rate of RASSF1A gene promoter region (0.71%±0.04%) was significantly higher than that in adjacent tissues (0.66%± 0.03%), and the difference was statistically significant (t=6.78, P=0.000).The expression of RASSF1A mRNA was significantly correlated with pathological differentiation (t=3.31, P=0.002), International Federation of Gynecology and Obstetrics (FIGO) stage (t=2.13, P=0.040), lymphatic metastasis (t=2.56, P=0.015).The promoter methylation level of RASSF1A gene was significantly correlated with pathological differentiation (t=2.08, P=0.045), FIGO stage (t=2.66, P=0.011), lymphatic metastasis (t=2.22, P=0.033), depth of invasion (t=2.12, P=0.041).Conclusion The RASSF1A gene promoter region methylation level and the RASSF1A gene mRNA expression level are associated with the malignant degree of cervical carcinoma.The RASSF1A gene promoter region methylation level may be used as a reference indicator for predicting the risk of metastasis of cervical cancer.

Objective: To strengthen the education of ethics,honor and humiliation,and humanities for the working staff in community healthcare service,so as to better serve the community residents.Method: To strengthen the education of ethics,honor and humiliation,and humanities for the working staff in community healthcare service,and check the outcome.Conclusion: It is necessary to recognize the humanistic function of community healthcare service,strengthen practice and the ability of healthcare service to improve residents' trust and satisfaction of community healthcare service.

Objective To observe the relationship between serum bilirubin levels of elderly heart failure patients and type, clinical symptom and prognosis of the heart failure. To explore the pathophysiological role of heme oxygenase 1/CO bilirubin system in the pathogenesis of the heart failure. Methods Serum total bilirubin and direct bilirubin and indrect bilirubin levels of 57 inpatients admitted to our depatment because of heart failure from April 1998 to June 2000 were examined in the second day, first and second week after admission, respectively. Results (1) Compared with the recovery stage of the heart failure, the serum total bilirubin levels during the heart failure attack increased by 52 9% and 78 9%, respectively than the first and second week after the attack(26 1 ?mol/L vs 17 4 ?mol/L and 14 6 ?mol/L, P

AIM: To study the effects of L-arginine on sebaceous gland hyperplasia in rats. METHODS: 10 mg?kg -1?d -11 of L-arginine was poured into the stomach in Sprague-Dawley rats for 7-14 d. The pathology phenomenon was observed in the rat skin. RESULTS: The backside skin of the male SD rats showed dewiness, greasiness and engrained yellow. The incidence was 100% for 7 d in the male SD rats, 80% in the female SD rats for 14 d, but 100% in the immature female SD rats for 14 d. CONCLUSION: L-arg nine can facilitate the hyperplasia of sebaceous gland in SD rats.