Not everyone who surf on the internet gets addicted and suffers harm of internet addiction,for the selection system of internet addiction and harm involves biological,physiological,behavioral,personal,environmental and sensitivity factors.Internet harm includes physiological harm,psychical harm,society function harm,and the harm for growing-up.Point of exhorting internet addiction lies in internet game addiction,and violent withdrawing approach should be avoided.

Objective To study the changes of cerebral haemodynamics in neonates with hypoxic-ischemic encephalopathy(HIE) treated with Shengmai injection compared with citicoline,and explore the clinical interventions of Shengmai injection on HIE.Methods Fifty patients with HIE were randomized into 2 groups: shengmai group treated with Shengmai injection(n=30),and citicoline group treated with citicoline(n=20).The haemodynamic parameters included peak systolic flow velocity(PSFV),end-diastolic flow velocity(EDFV),pulsation index(PI) and resistance index(RI) of anterior and middle cerebral artery were detected by color Doppler ultrasound before treatment and on 7~(th) day after treatment respectively.Control group(n=50) compared with the two groups.Results PSFV,PDFV and RI of HIE patients were significantly lower than those of control group(P

Objective To explore the effects of cryopreservation on biological characteristics of cultured limbal stem cells.Design Experimental study.Participants Twenty New Zealand white rabbits.Methods Twenty New Zealand white rabbits(40 eyes) were preparated of peripheral cornea with 2 mm and 2 mm circular shallow conjunctival limbal graft.Rabbit limbal stem cells(Rb-LSCs) used for cell-suspention culture were isolated form New Zealand white rabbit limbal tissues.The limbal stem cells,having formated monolayer cultured limbal stem cells,were cryopreservated one month,then thawing.By immunofluorescence staining,flow cytometry,inverted microscope,MTT assay,we compared the subculture of limbal stem cells cryopreservation before and after the structure and properties.Main Outcome Measurements Limbal stem cell activity and biological characteristics.Results Compared with freshing cells,the cells after cryopreservation in morphology were poor adherence late,small nuclear cytoplasm ratio,irregular shape.Im munofluorescence staining to detect the low-temperature frozen cells ABCG2 monoclonal antibody 81.7% positive rate decreased to 46.9%,the difference was statistically significant(P

Objective To investigate the influence of Bisoprolol on plasma brain natriuretic peptide level for congestive heart failure.Methods 84 patients of chronic congestive heart failure were selacted as study object.All patients in the conventional anti-heart failure therapy based on the application of bisoprolol,2.5mg/d,one time of day,adjusting the 5 ～ 10mg/d,one time of day,according to the situation of patients,the heart rate,blood pressure,changes in ejection fraction,and BNP before and after treatment were observed.Results The BNP level of 84 patients decreased as the heart function gradually increased(t =4.241,4.573,4.074,7.328,all P ＜ 0.01).After treatment,heart rate,blood pressure,left ventricular ejection fraction was significantly higher than that before treatment (t =3.585,3.245,3.347,all P ＜ 0.05).After treatment,BNP level was significantly lower(t =4.876,P ＜ 0.01).Conclusion BNP level in patients with congestive heart failure could reflect the level of heart function,the application of bisoprolol in patients with congestive heart failure could improve cardiac function and reduce BNP levels in patients.

Diseases in Twins ; Female ; Gene Rearrangement ; Humans ; Infant ; Male ; Myeloid-Lymphoid Leukemia Protein ; genetics ; Oncogene Proteins, Fusion ; genetics ; Polymerase Chain Reaction ; Precursor Cell Lymphoblastic Leukemia-Lymphoma ; genetics ; pathology ; Twins, Monozygotic

OBJECTIVE:To evaluate the economic effectiveness of three angiotension-converting enzyme inhibitor(ACEI) in treating patients with essential hypertension.METHODS:186 patients with essential hypertension were randomly divided into three groups receiving enalapril,fosinopril and perindopril respectively.The results were evaluated with pharmacoeconomic analysis.RESULTS:In treatment of hypertension,enalapril was minimal in cost.CONCLUSION:Therapeutic effect will be improved and cost decreased when pharmacoeconomic cost-effectiveness analysis is used.

Objective To study the protective mechanism of Gross Saponin Tribulus Terrestris(GSTT) on the neonatal rat ventricular cardiocytes injured by hypoxia and the effect on protein kinase C(PKC).Methods The hypoxia-ischemia model was performed by treating the cultured neonatal rat ventricular cardiocytes with NaCN.The effect of GSTT(100 and 30 mg?L~(-1)) on the contents of ?PKC and ?PKC were detected by flow cytometry and laser confocal microscopy system.Results GSTT up-regulated ?PKC and ?PKC expressions.The contents of ?PKC and ?PKC in GSTT 100 mg?L~(-1) group(1 325.00?53.25,810.55?36.89;66.22?6.23,40.12?2.21) were increased significantly than those in model group(792.00?32.36,492.40?30.15;32.70?2.78,29.28?4.82)(P

Objective To investigate the effects of angiotensin Ⅰ-converting enzyme inhibitor Enalaprilat(Ena) on proliferation and nitric oxide synthase-nitric oxide system of neonatal rat cardiac fibroblasts(CFb)and to probe its anticardiac fibrosis mechanism.Methods The cultured neonatal Wistar rat CFb were divided into control group,model group and three doses of Ena groups.CFb were isolated by trypsin digestion method.MTT colorimetric assay was adopted to evaluate cell proliferation,flow cytometry was used to measure cell cycle,nitric acid reductase method and spectrophotometry were used to detect the NO contents and NOS activity respectively with Ena.Results Ena could inhibit CFb proliferation induced by AngⅡ,there were significant differences of MTT values between model group and Ena groups after treated for 24,48 and 72 h(P

Aim To investigate the effects of angiotensinI-converting enzyme inhibitor enalaprilat on proliferation,Endothelin-1 and Nitric oxide System of neonatal cardiac fibroblasts and to probe its mechanism of inhibiting cardiac fibrosis.Methods CFb was isolated by trypsin digestion method.MTT colorimetric assay was adopted to evaluate cell proliferation,HYP method was used to test the collagen synthesis;FCM for cell cycle;Nitric acid reductase method,radio-immunological method was used to detect NO content and ET-1 activity respectively.Results Ena decreased contents of MTT and HYP dramatically.The percentage ratio of phase G0/G1 was increaseded and the percentage radio of phase S was decreased.NO content was increased and ET-1 activity was dropped in a dose and time-dependent manner.Conclusion The anti-proliferative effects of Ena on CFb can be attributed to dropping endothelin-1 activity and enhancing Nitric oxide.

Many malfunctions may happen in the operation of plasma sterilization machine.The basic principle and running procedure of plasma sterilization system under normal condition are introduced,and the causes of malfunctions are mainly analyzed so that users can discover and obviate them immediately.