Clinical respirator is the most commonly used first-aid life-support equipment.Therefore,to strengthen the maintenance and management of respirator is very important for the enhancement of its safety and availability and treatment efficacy.

This article briefly introduces the integrated management of hospital medical equipment after selection, order and approval.The importance of continuous education for technical staff is also disscussed.

OBJECTIVE: To investigate the effect of n-butanol extract of Morindae officinalis How(BEM) on apoptosis of myocardial cells in neonatal rats undergoing anoxia/reoxygenation(A/R).METHODS: The rats were divided into 6 groups: normal group,A/R model,Danshen ingection(SM),BEM high,middle,low groups.The morphological changes of the apoptotic myocardial cells were observed using electron microscope.The apoptotic index was measured by in situ nick end labeling(TUNEL).The expression of Bcl-2 and the apoptotic protein Bax were detected by immunohistochemical staining.RESULTS: Morphocytology revealed the remarkable protective effect of BEM against apoptosis of myocardial cells during A/R.TUNEL test showed significantly lower apoptotic indexes in SM,BEM high,middle,low groups than in A/R group,and in all the SM,BEM high,middle,low groups,the positive expressed Bcl-2 gray scale value increased significantly(P

The properties of the corticosterone receptors and the effects of para-chlorophenylalanine(pCPA) on the binding capacity of the corticosterone receptors of the hippocampal cytosol in adrenalectomized rats were investigated with receptor radioligand binding assay(RLA) using (3H)-corticosterone as the ligand. It was fonud that the corticosterone receptors possessed the properties of satu-rability, limited binding capacity, high affinity and high specificity. RLA demonstrated a linear Scatchard plot, which implies that there is only one receptor or one group of receptors with similar Kd values. Four days after intracerebroven-tricular injection of 1 mg of pCPA, the hippocampal concentration of 5-HT was markedly decreased, and the binding capacity of the cytosol receptors was increased, which implies that the functional activity of the serotoninergic system in the hippocampus is an important factor in the control of the number of corticosterone receptors in rats.

Objective To investigate the clinical effect of adopting B-type ultrasound guided peripherally inserted central catheter (PICC) in the patients with lung cancer.Methods Two hundreds and ninety-five cases of lung cancer undergoing PICC in our hospital from January 2011 to May 2016 were selected as the research subjects and divided into the observation group (151 cases) and control group (144 cases) according to the PICC methods.PICC in the observation group adopted the B-type guided modified Seldinger technique,while the control group adopted the conventional method.The venous thrombus occurrence situation in the two groups was comparatively analyzed.Results (1) The platelet count (PLT),plasma D dimer (D-D) and thromboxane B2 (TXB2),endothelin (ET),6-keto-prostaglandin F1 alpha (6-keto-PGF1α) before PICC had no signigicant difference between the two groups (P>0.05).PLT,D-D,TXB2 and ET at 12,24 h after PICC in the observation group and control group were gradually increased,while plasma 6-keto-PGF1α was gradually decreased,the intra-group difference among different time points had statistical significant (P<0.05).PLT and plasma D-D,TXB2 and ET in the observation group were significantly lower than those in the control group,while keto-PGF1α was significantly higher than that in the control group,the difference between the two groups was statistically significant(P<0.05).(2)The incidence rate of venous thrombosis in the observation group was significantly lower than that in the control group,the difference was statistically significant between the two groups (P<0.05).Conclusion Adopting B-type ultrasound guided modified Seldinger technique for PICC in the patients with lung cancer has much lower incidence rate of venous thrombosis.

Objective To explore the curative effect of bisoprolol fumarate combined with wenxin granule for patients with heart failure complicated with premature ventricular.Methods 132 patients with heart failure and premature ventricular complexes were enrolled in our hospital from January 2013 to January 2016,and which patients divided into two groups,bisoprolol fumarate group (Group BF,n =66) accepted bisoprolol fumarate treatment (5 mg/time,1 times/day),and bisoprolol fumarate combined with wenxin granule group (Group BW n =66) adopted wenxin granule (9 g/time,3 times/day) based on the patients in Group BF.After 4 weeks treatment,the curative effect of all patients were evaluated with electrocardiogram monitor and cardiac ultrasound examination,and the plasma NT-proBNP concentration and hemorheology indexes were analyzed compared with pre-treatment.Results The recovery of ventricular function in Group BW was better significantly than that patients in Group BF from the cardiac ultrasound examination (P ＜ 0.05);The total relieved effective of clinical symptom,premature ventricular complexes and heart failure in Group BW were more remarkable than those in Group BF,and which difference from them was significance (P ＜ 0.05);The blood viscosity,plasma viscosity,plasma fibrinogen and plasma NT-proBNP concentration in patients with Group BW were significantly lower than those Group BF (P ＜ 0.05).Conclusions The clinical curative effect of bisoprolol fumarate combined with Wenxin Granule for heart failure complicated with premature ventricular was more remarkable compare with bisoprolol fumarate single treatment,and which possessed the relative safety.

Deubiquitylases remove ubiquitin moieties from different substrates to regulate protein activity and cell homeostasis .Since this posttranslational modification plays a role in several different cellular functions ,its deregulation has been associated with different pathologies .Aberrant expression of Ubiquitin -Specific Peptidase 22(USP22)has been associated with poor cancer prognosis .This article reviews the research status of USP 22.

BACKGROUND:The use of neural stem cels provides a new approach for nervous system functional reconstruction and nerve regeneration. How to solve the induced differentiation of neural stem cels is stil a research hotspot.
OBJECTIVE:To investigate the differentiation of rat neural stem cels into neurons and dopaminergic neurons under induction of glial cel-line derived neurotrophic factor gene.
METHODS:PcDNA3-GDNF-GFP plasmids were constructed and transferredvia lipidosome into rat embryonic neural stem cels. Differentiation of neural stem cels after transfection was identified under a fluorescence microscope. Immunofluorescent staining was used to detect expression of β-tubulin III and tyrosine hydroxylase.
RESULTS AND CONCLUSION:At 3 days after transfection, green fluorescence was observed in the transfected cels that were globular. At 7 days after transfection, the proportion of neural stem cels differentiating into neurons and dopaminergic neurons were significantly increased. These results indicate that the glial cel-line derived neurotrophic factor gene can induce the differentiation of neural stem cels into neurons and dopaminergic neurons.

In this paper, the theory of electrical character and adsorption of solidliquid interface was applied to study the preparation process for borneol-mi-croencapsule with co-coacervation using gelatin and arabic gum as materials. The optimum process conditions for preparing microencapsule was gained. This study method provided a reliable basis for raising the inclusion rate, decreasing the capsule materials in quantity and drawing up the process conditions.