AIM: To demonstrate the effect of mitochondrial ATP-sensitive potassium channel opener,Diazoxide,on glutamate uptake activity of astrocyte. METHODS: Primary astrocytic cultures were prepared from cerebral cortices of rats within 3 days old.Glutamate uptake activity of astrocytes was measured using isotopic techniques to detect intracellular -labeled D,L-glutamate concentration.RESULTS: Diazoxide increased -glutamate uptake in a concentration-dependent manner,and could significantly reverse MPP~+-induced glutamate uptake inhibition.The above effects of Diazoxide were blocked by 5-hydroxydecanoate,a selective mitochondrial ATP-sensitive potassium channel blocker.CONCLUSION: Diazoxide increase the activity of glutamate transporters in astrocytes by opening mitochondrial ATP-sensitive potassium channel.

Objective To know the preventive effects of using hammock firmness sheets for pa-tients with pressure ulcer.Methods Divided 98 patients into the application group (31 cases), the treatment group(30 cases) and the control group(37 cases) according to themselves condition.Hammock firmness sheets was used in the application group, while the routine preventive method of pressure ulcer was used in the control group.To know the preventive effects of pressure ulcer betweent the two groups.The patients in the treatment group was patients had pressure ulcer, hammock firmness sheets combined with local massage were used for them, observed the treatment effects for them.Results The condi-tion of preventive effect of pressure ulcer in the application group was better than those of in the control group.The cure rate of pres sure ulcer in the treatment group was 90%.Conclusions The hammock firmness sheets can prevent pressure ulcer effectively.

Aiming at status of training the rural order directed free medical educational talents, we should improve the understanding of training the free medical students, perfect the relevant management system, strengthen medical ethics education of students, pay attention to humanistic care of students,strengthen the continuing education of students, standardize the access system of students, reform the medical distribution system, to ensure the quality of training free medical students.

Objective To identify the sequence of cDNA of human leptin coding region, construct a prokaryotic expression vector, and express human leptin in E.coli. Methods RNA was extracted from human placenta tissue. Leptin gene was amplified from RNA by RT-PCR method. The PCR product was ligated with T vector. The ligation reaction was transformed to E.coli DH5? competent cells. The recombinant plasmid was checked by sequencing and restriction analysis. The human leptin gene was cloned into prokaryotic expression vector PET-28a and tranformed into E.coli BL21. The recombinant strain was constructed and induced by IPTG. The product was analyzed with SDS-PAGE and Western blotting. The expressive product was purified by sodium deoxycholate. Results Analysis indicated that the sequence of human leptin cDNA was the same with the reported sequence. Leptin gene was inserted into prokaryotic expression vector. The fusion protein expressed with high efficiency in recombinant E.coli BL21.The results of SDS-PAGE analysis indicated that the molecular weight of the fusion protein was about 20kD. Conclusion Hunam leptin gene was successfully identified from placenta. The leptin gene prokaryotic expression strain was constructed and a high expression of leptin was achieved in E.coli.

Objective To investigate the levels of cancer related fatigue (CRF) and the correlations between CRF and serum inflammatory factors and hypothalamus-pituitary-adrenal (HPA) axis in patients with gastrointestinal cancer.Methods The CRF level was assessed by brief fatigue inventory (BFI).The level of C-reactive protein (CRP) was measured by immunoturbidimetry, and the level of cortisol was measured by electrochemiluminesence.The levels of interleukin (IL)-6, IL-1β, tumor necrosis factor-α (TNF-α), adrenocorticotropic hormone (ACTH) and norepinephrine (NE) were measured by enzyme-linked immunosorbent assay (ELISA).Results The average total score of CRF was 3.15±1.93, and the degree was mild to moderate, which was positively correlated with the CRP (r=0.321, P=0.000), TNF-α (r=0.265, P=0.000), NE (r=0.174, P=0.015) and ACTH (r=0.257, P=0.000), but was not correlated with the cortisol (r=0.033, P=0.652).Eastern Cooperative Oncology Group (ECOG) score (t=8.081, P=0.000), education (t=-4.244, P=0.000), treatment (t=4.563, P=0.000), time from diagnosis to sampling (t=3.453, P=0.001) and CRP (t=2.837, P=0.006) were important factors of CRF.Conclusion The CRF status is common in gastrointestinal cancer patients.The CRF is correlated with the NE and ACTH of HPA axis.Medical staff should pay attention to the inflammatory factors and hormone levels to improve the fatigue status and the quality of patients.

The cardiovascular disease has become one of the important chronic health problems for humans. At present, the research on the traditional risk factors of cardiovascular disease has been studied from the relevance to the mechanism. In this paper, the recent progress of the traditional risk factors of CVD and the impact mechanism are reviewed in order to provide a basis for the prevention, treatment and nursing of cardiovascular diseases.

This article uses methods such as professional research,critical analysis,literature research,professional consultation etc to create and construct the basic structure of 5-year higher vocational school medical laboratory integrated project courses,aiming to qualify and instruct the professional medical laboratory teachers,to promote the revolution of medical laboratory education,and to form a reference for improving the professional medical laboratory teachers'practical abilities of developing and carrying out project courses.

Fatigue is commonly experienced in patients with advanced kidney disease and associated with poor outcomes. The purpose of this review was to discuss the prevalence, assessment methods and contributing factors of fatigue in patients with end-stage renal disease (ESRD), and also examined possible interventions to improve fatigue and concludes by defining some future research directions.

Objective To compare the effects of rat proinsulin gene therapy via intraportal infusion and intramuscular injection blood glucose level in streptozotocin-induced diabetic rots. Methods (1) Recombinant eukaryotic cell expression plasmid of rat proinsulin gene pCMV/proiusulin was transferred into streptozotocin-induced diabetic rats by intraportal infusion and intramuscular injection to observe the effect of rat proiusulin gene therapy in diabetic rats. The treatment group by intraportal infusion (group A) and the group by intramuscular injection (group C) were given pCMV/proinsulin naked plasmid DNA 100 μg, while the control groups by intraportal infusion (group B) or by intramuscular injection (group D) were treated with similar amount of pCMV DNA. Normal group and diabetes mellitus group were also observed at the same time. (2) Blood glucose level was tested and serum insulin was determined by radioimmunoassay. RT-PCR and immunohistochemistry were used to detemine proinsulin mRNA and protein expressions in liver and skeletal muscle and protein. Results (1) The blood glucose levels in two treated groups were both decreased. In group A, levels of blood sugar decreased about 7 mmol/L and glycemie control was maintained for 3-4 weeks. Serum insulin levels step up significantly after pCMV/proinsulin gene therapy. The blood glucose level in group A was significantly lower than those of group B and DM group (P<0.05), while the serum insulin level was higher than those of two groups (P<0.05). In group C, blood glucose levels decreased about 4 mmol/L and glycemic control was maintained for 1-2 weeks. Meanwhile, the concentrations of insulin increased markedly after gene therapy. The blood glucose in group C was significantly lower than those of group D and DM group (P<0.05), while the serum insulin level was higher than those of two groups (P<0.05). (2) Proinsulin mRNA and protein expressions could be detected in either hepatic cell of group A or skeletal muscle cell of group C, not in group B and group D. Conclusion Proiusulin genetherapy via intraportal infusion or intramuscular injection lowers significantly blood glucose in diabetic rats, and thus offers a potential approach to treatment of diabetes.

Cardiovascular disease has become a major health problem facing human beings, and it is also the leading cause of death world wide.Now Cardiovascular disease risk factors have been found and many new complex risk factors (such as sleep, atmospheric pollution, social psychological factors, cortisol, C-reactiveprotein, homocysteine, age at menarche etc.) are put forward, which let people have a deeper understanding. In this paper, the recent advances in cardiovascular disease risk factors and influence mechanism are reviewed, so as to provide basis and support for cardiovascular disease in prevention, treatment and nursing.