Close attention is paid to WeChat in academic libraries due to its convenience in manipulation, high effec-tiveness in interpersonal communication , richness in content pushing , and accuracy in new pushing .The use of WeChat public platform in academic libraries of Shaanxi Province was investigated .Its opening , popularization and contents were analyzed , which showed that WeChat platform should be constructed in academic libraries by innova-ting its service contents and adding reader experiences .

Objective To explore the relationship between collateral circulation and clinical manifestation after se-vere stenosis or occlusion of internal carotid artery. Methods According to the clinical manifestation, 78 cases of ICA ste-nosis or occlusion confirmed by digital subtraction angiography (DSA) were divided into two groups:asymptomatic group (n=31) and symptomatic group (n=47). Collateral circulation pathway in circle of Willis and the mean flow velocity of the middle cerebral arteries (MVMCA) were measured by Transcranial Doppler Ultrasonography (TCD). The correlation of the types of intracranial collateral circulation and clinical manifestation was analyzed. Results ① The collateral circulation opening rate of severe stenosis or occlusion of internal carotid artery in 78 cases of patients was 70.5%(55/78). The collat-eral patency rate (27/31, 87.1% of patients) was higher in asymptomatic group than in the symptomatic group (28/47, 59.6%of patients)(P<0.01).②Collateral patency of anterior communicating artery (ACoA)in asymptomatic group (24/31, 77.4%of patients) was higher than that in symptomatic group (20/47, 42.6%of patients) (P<0.01). Collateral patency of ophthalmic artery (OA) in symptomatic group (21/47, 44.7%of patients) was higher than that in asymptomatic group(6/31, 19.4%of patients)(P<0.05). The opening rate of ACoA was significantly higher than that of either the posterior commu-nicating artery (PCoA) or OA collateral circulation in asymptomatic group (P<0.05).③The mean flow velocity of the af- fected side middle cerebral arteries (MVMCA) in asymptomatic group (51.58±12.36cm/s) was significantly higher than that in symptomatic group (32.23±10.31cm/s) (P<0.01). Conclusion The clinical manifestation is closely related to arterial circle of Willis collateral circulation opening after severe stenosis or occlusion of internal carotid artery and collateral patency of anterior communicating artery is the major collateral supply vessel.

Objective To investigate the efficacy and safety of domestic Oseltamivir granules in the treatment of influenza A in children.Methods The research subjects were the hospitalized patients with influenza A coming from the Department of Infectious Disease in Guangzhou Women and Children's Medical Center.from January and March,2014 They were divided into 2 groups randomly.Patients in the treatment group received domestic Oseltamivir granules,while the patients in the control group received foreign Oseltamivir.Chi square test was performed to compare baseline characteristics and the difference in side effects.Paired t test was used to compare baseline characteristics and the difference in side effects.Results There were 44 cases in the study group,27 cases were male(61.36％),17 cases were female (38.64％),and the average age was (2.40 ± 1.97) years old.There were 40 cases in the control group,28 cases were male (70.00％),12 cases were female (30.00％),and the average age was (2.99-± 3.19) years old.The maximum age was 6 years old.The age and gender were not significant (P ＞ 0.05) between 2 groups.The fever remission time was (14.67-± 9.37) h and (11.80-± 9.98) h in the treatment group and the control group,and there was no significant difference between 2 groups (P ＞ 0.05);the flu symptoms completely remission time was (62.50 ± 25.03) h and (65.40 ± 36.74) h in the treatment group and the control group,and there was no significant difference between 2 groups (P ＞ 0.05);the adverse reaction was not observed in the treatment group,but 1 case in the control group had cough,and without special treatment cough alleviated gradually;the close contacts in 2 groups did not develop influenza A.Conclusions The domestic Oseltamivir granules are as effective and safe as the foreign Oseltamivir.And the domestic Oseltamivir granules are the granular type,and therefore more suitable for children

Objective To investigate the feasibility of using clustered regularly interspaced short palindromic repeats ( CRISPR)-mediated genome editing to downregulate the expression of programmed cell death protein 1 (PD-1) on primary T cells by using a lentivirus delivery system. Methods Lentivirus vec-tors pLentiCRISPR A1-A6 containing different PD-1 genomic DNA sequences as single guide RNA ( sgRNA) for Cas9 targeting were constructed individually. The lentivirus vectors were tranduced into primary CD4 T cells. Flow cytometry analysis was performed to detect the expression of PD-1 for evaluating the knockout ef-ficiency. Results The lentivirus vectors pLentiCRISPR A1-A6 carrying six different target sites were con-structed and respectively tranduced into primary CD4 T cells. The expression of PD-1 accompanied with the activation of T cells. Co-expression of CD25 and PD-1 was observed on activated T cells. All of the six sites could be targeted by Cas9, of which A2 and A6 sites were more efficient in knocking out the gene encoding PD-1 with a rate of 19% and 29%, respectively. Conclusion This study suggests that it is feasible to knock out the expression of PD-1 on primary T cells by using CRISPR.

Objective To study the clinical effect of personalized intervention on elderly patients with colostomy after Miles operation for rectal carcinoma. Methods 114 cases elderly patients with colonic stoma after Miles operation for rectal cancer from June 2014 to January 2016 were divided into control group and observation group by random number method, 57 cases in each. The control group were treated with routine intervention, while patients in observation group was treated with personalized intervention. the self-care ability score before intervention, the incidence of complications, intervention satisfaction and life quality score were compared between the two groups at the same time. Results The total complication rate in the observation group was significantly lower than that in control group ( 5.25% vs 22.80%) (χ2 = 8.36, P = 0.000); the intervention satisfaction of the observation group was significantly higher than that in control group (91.23% vs 75.44%) (χ2 = 6.60, P = 0.010). After intervention, the self-care ability score and life quality score of observation group were significantly higher than that in control group (P < 0.01). Conclusion The personalized intervention can reduce the complications, significantly improve the patients' life quality score and self-care ability, and effectively alleviate the negative situation, improve the patients intervention satisfaction, with a higher development value, it is worth of clinical promoting.

Objective To investigate the risk factors of reversible posterior leukoencephalopathy syndrome (RPLS) in pre-eclampsia or eclampsia gravida. Methods This study was conducted in the Third Affiliated Hospital of Guangzhou Medical University between January 2013 and March 2016. A total of 100 patients who had no severe neurological diseases and were diagnosed pre-eclampsia or eclampsia, and underwent brain MRI were collected retrospectively. They were divided into 2 groups according to the MRI results, the RPLS group (n=49) and the non-RPLS group (n=51). The medical history, clinical symptoms and the results of laboratory examination were analyzed by the logistic regression, in order to explore the risk factors.Results In single factor analysis, HELLP syndrome, pregnancy associated with other diseases, poor prenatal care, grade 3 hypertension, elevated systolic blood pressure or diastolic blood pressure, elevated WBC, aspartate transaminase (AST), alanine aminotransferase (ALT), uric acid (UA) and lactate dehydrogenase (LDH), decreased platelet (PLT), headache, visual changes, seizures and conscious disturbance were more frequent in the RPLS group than those in the non-RPLS group (all P<0.05). According to the multivariate logistic regression analysis, the elevated WBC (OR=1.291, 95%CI:1.058-1.575, P=0.012), UA (OR=1.008,95%CI:1.001-1.016,P=0.032) and headache (OR=18.260, 95%CI:3.562- 93.607, P=0.000) were the independent risk factors.Conclusions Maternal history, clinical symptoms and some laboratory examinations might help in the early diagnosis of RPLS in pre-eclampsia or eclampsia gravida. Headache, the elevation of WBC and UA were the most significant factors.

Rhubarb anthraquinone derivatives (AQs) have been documented to have both therapeutic and toxic effect on liver and kidney, leading to a complex puzzle to assess their benefits and risks. In this study, the tissue distributions of AQs in SD rats after orally administrated extracts of raw and prepared rhubarb were examined whether they undergo different uptake. The total rhubarb extract (14.49 g x kg(-1) of body weight per day od, counted on the quantity of crude material) was administrated orally for 12 weeks. The concentrations of the AQs in different tissues were quantified by liquid chromatography-tandem mass spectrometry (LC-MS/MS). The five major AQs, aloe-emodin, rhein, emodin, chrysophynol and physcion, could all be detected in the liver, kidney and spleen, while only rhein, aloe-emodin and emodin reached the quantitative limit. The tissue concentrations of AQs in raw rhubarb group were higher than that in steamed rhubarb group with rhein > emodin > aloe-emodin in the same tissue. On the whole, the tissue distribution of rhein was higher than that of emodin and aloe-emodin in liver, spleen and kidney. AQs could not be detected in those tissues after drug withdraw for 4 weeks, which suggested scarcely any accumulative toxicity of rhubarb. The result indicated that raw rhubarb had more tissue toxicity than steamed rhubarb and rhein may be one of the major poisonous ingredients. The results were concordant with the traditional Chinese medicine theory of toxicity-attenuating effect of processing.

This study examined the effect of electro-acupuncture (EA) combined with transcranial magnetic stimulation (TMS) therapy at different time windows on learning and memory ability of rats with cerebral infarction and the underlying mechanism. Two hundred SD rats were randomly divided into four groups: normal group, sham-operated group, model group and EA+TMS group, and each group was then divided into five sub-groups in terms of the different time to start treatment post operation: 6, 12, 24, 48 and 72 h. Cerebral infarction models were established in the model and the EA+TMS groups by left middle cerebral artery occlusion/reperfusion (MCAO/R). After treatment for 14 d, the Morris water maze test was applied to examine the spatial learning and memory abilities of rats. In infarcted area, the expression of caspase-3 was immunohistochemically detected, and real-time fluorescent quantitative PCR was used to measure the expression of Bcl-2 mRNA. The results showed that in EA+TMS group compared with model group at the same treatment time windows, the escape latency was substantially shortened, the expression of caspase-3 was considerably decreased and the expression level of Bcl-2 mRNA significantly increased (P<0.05). In the EA+TMS sub-groups, the escape latency was shortest, the expression level of caspase-3 lowest, and the expression level of Bcl-2 mRNA highest at the treatment time window of 24 h. It was concluded that EA combined with TMS can promote neurological function of rats with cerebral infarction by increasing the expression level of Bcl-2 mRNA and decreasing the expression of caspase-3. The best time window is 24 h after perfusion treatment to ischemia.

The elasticity of the ascending aorta in healthy volunteers and hypertension patients were examined by using quantitative tissue velocity imaging (QTVI), and the age-related change in the ascending aortic elasticity was investigated. The anterior and posterior walls of the ascending aorta were imaged with tissue Doppler method in all the subjects and QTVI was performed. Stable curves were obtained from 173 hypertension patients and 185 healthy adults. The peak early diastolic velocity (V(e)), peak late diastolic velocity (V(a)) and peak systolic velocity (V(s)) were measured. The relation of age with these measures was assessed. The results showed that the elasticity of the ascending aorta was much lower in the hypertension patients than in normal controls (P<0.05), and the elasticity was decreased with age in both groups (P<0.05). Our results suggested that QTVI, a new non-invasive ultrasonic technique, is helpful for the assessment of the aortic elasticity in hypertension patients.

Objective To investigate the protective effect of fibrinolytic therapy on renal function in patients with IgA nephropathy. Methods The clinical data of 84 patients with idiopathic IgA nephropathy were analyzed in a retrospective cohort study. According to different drugs of fibrinolytic therapy, the patients were divided into three groups including control group(n=23), urokinase group (n=32) and fibrinogenase group (n=29). Twenty-four-hour urine protein excretion, serum albumin, estimated glomerular filtration rate (eGFR), prothrombin time and fibrinogen level between the three groups after 6-month and 1-year treatments were compared. Results Compared to the group before treatment, the urine protein excretions were decreased in all 3 groups with 6-month and 1-year treatments (P<0.01). The urine protein excretion in the urokinase group with 6-month and 1-year treatments were lower than that in the control group (P<0.01). The urine protein excretion in the fibrinogenase group with 1-year treatment were lower that in the control group (P<0.05). After 1-year treatment, the eGFR in urokinase group was significantly increased compared with the control group (P<0.05). Conclusion Fibrinolytic therapy can decrease the 24-hour urine protein excretion and improve the renal fuction in those patients with idiopathic IgA nephropathy independent of glucocorticoids and immunosuppressive agents.