Objective To study the effect of different pH values on activation of sodium chlorite. Methods After activated sodium chlorite by different concentration of hydrochloric acid, differentiate determination was used to determine the concentration of chlorine dioxide and other chlorine species produced at different times. Results The activation rates of chlorine dioxide increased as concentration of hydrochloric acid gradually increased, that showed a dose-response manner. When concentration of hydrochloric acid were 9.6, 10 and 10.3 mol/L, the pH value reached 0.47, 0.39 and 0.26, respectively, the activation rate reached the peak value at 10 min (activation rate was 98.8%), 8 min (97.1%) and 5 min (99.2%) respectively. Conclusion The activation rate of chlorine dioxide is related to pH. When pH value is less than 0.5,the activation rate of chlorine dioxide is higher. The lower the pH value is,the higher the activation rate of chlorine dioxide is and more early the peak value appears.

Objective To understand the psychological experience of patients with malignant tu-mor of oral and maxillofaeial region surgery during early diagnosis and perioperative stage in order to supply reference for clinical staff to carry out psychological support. Methods 12 patients with malignant tumor of oral and maxillofacial region surgery participated in the in- depth interview, the data were analyzed, fin-ished and epurated. Results During the whole process of the early diagnosis and perioperative period,the patients showed negative psychological response, they had to bear significant psychological and financial burden as well as lack of social support. Conclusions Patients with malignant tumor of oral and maxillo-facial region surgery needed humanistic care and emotional support, nursing professionals should provide effective measures to release stress and improve negative emotions, make good use of social resources in or-der to assist them to get through the difficult course.

Polypoidal choroidal vasculopathy (PCV) is a fundus disease characterized by choroidal anomalous branch vascular network and terminal polypoidal dilatation.According to its fundus feature,lesion location,imaging feature and disease progression,PCV can be divided into different types or stages.It can be divided into hemorrhage and exudation PCV according to the fundus features,into macular,peripapillary,periphery and mixed types according to the lesion locations.It can also be divided into type 1 and 2 according to the ICGA (indocyanine green angiography) manifestations,and can be classified as early stage and late stage according to disease progression.There were different correlations between different types of PCV and some risk genetic loci,such as ARMS2 (age-related macular degeneration factor 2)/HTRA1 (high temperature essential protein A1),C2,complement factor B,complement factor H,and elastin genes.The response to therapy and prognosis are also different between different types.It is important to further study the clinical classification of PCV,to explore the genetic characteristics,influencing factors and treatment or prognosis features of different types of PCV.The results will improve the differential diagnosis of PCV,and the effectiveness of individualized treatment.

ObjectiveTo investigate the effects of atorvastatin on cardiomyocyte apoptosis and caspase-3 expression in acute myocardial infarction in rats.MethodsFifty SD rats were randomly divided into 3 group:sham group,control group( normal saline),atorvastatin pretreatment group ( 10mg/kg),The atorvastatin group were pretreated with atorvastatin ( 10mg/kg ) for 3 days,and those in the control group were pretreated with normal saline instead.All rats underwent coronary ligation of left anterior descending branch to establish AMI rat s model on the fourth day except the sham group,while sham group only received thoracotomy without coronary ligation.Then,The infarct size area at risk were defined by Evans blue and TTC staining,the caspase-3 mRNA expression of myocardium was measured with reverse-transcriptase polymerase chain reaction(RT-PCR) and the apoptosis index was analyzed by TUNEL staining.Results Compared with control group,the infarct size,the caspase-3 mRNA expression of myocardium,the apoptotic index were decreased significant in the atorvastatin group ( P ＜ 0.05 ).ConclusionPretreatment with atorvastatin has protective effect on the acute ischemic cardiomyocytes,which may probably be associated with the reduction of the expression of caspase-3 mRNA in the myocardium and the apoptotic index.

Objective To explore the relationship of neuron injury and its severity with the cause and the duration of convulsion Methods Patients were divided into 5 groups or 3 groups according to the causes of convulsion or duration of convulsion in children The levels of neuron specific enolase(NSE) and nitrogen monoxide and nitricoxide synthase(NO/NOS) in serum and cerebrospinal fluid(CSF) were tested by ELISA and spectrophotography at different time points after convulsion in children Results The levels of NSE and NO/NOS in serum and CSF of all objective groups except the febrile convulsion group were apparently higher than those in control group( t =15 4～47 7, P

It showed that physical therapy is important to the old people with type 2 diabetes mellitus by reviewing literature. The mechanism maybe lose body weight, raise glucose utilization, and reduce complication. Physical therapy is useful to decline the level of blood glucose, relieve complication, and improve quality of life.

An improved assay for quantitation of murine macrophage-mediated antibody-dependent cellular cytotoxicity (MMADCC) by hemoglobin-enzyme release assay (Hb-ERA) has been developed The method is based on the coloration measurement by spectrophotometer,because hemoglobin has peroxidase activity capable of catalyzing the oxidation of o-phenylenediamine and producing color reaction. This method was applied to demonstrate variation of MMADCC activity with varying effector:target ratio,incubation time,antibody concentration and macrophage in different stage of activation. The method provides advantages of(l)elimination of the need for expensive and hazardous radioactive materials,(2)relative ease and rapidity, (3)sensitiyity and reproducibility.

Pulmonary fibrosis , an important cause of pulmonary diseases , has no effective protective and therapeutic meas-ures.Recent studies showed high mobility group protein B 1 (HMGB1) has an important role in the development of pulmonary fibrosis and many HMGB1 antagonists can alleviate pulmonary fibrosis in animal models .This paper summarizes the structure , function, intra-cellular signal transduction of HMGB1, the expression change of HMGB1 in pulmonary fibrosis and HMGB1 targeted therapy in pulmo-nary fibrosis in order to provide an effective basis for clinical treatment of pulmonary fibrosis .

Objective To investigate the change of insulin-like growth factor Ⅱ(IGF-Ⅱ) and its relation with infection in severely burned patients.Methods RIA method was used to determine the serum IGF-Ⅱ level in patients with severe burn.Results Compared with control group, the level of IGF-Ⅱ was increased significantly at 5 postburn days , and persistent 35 days (P0 05).Conclusion IGF-Ⅱ is involved in the pathogenesis of burn , and closely correlated with the infection after burn.