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Objective@#: Nicotinamide mononucleotide adenylyl transferase 2 (NMNAT2) is a crucial factor for the survival of neuron. The role of NMNAT2 in damage following traumatic brain injury (TBI) remains unknown. This study was designed to investigate the role of NMNAT2 in TBI-induced neuronal degeneration and neurological deficits in rats. @*Methods@#: The TBI model was established in Sprague-Dawley rats by a weight-dropping method. Real-time polymerase chain reaction, western blot, immunofluorescence, Fluoro-Jade C staining, and neurological score analyses were carried out. @*Results@#: NMNAT2 mRNA and protein levels were increased in the injured-side cortex at 6 hours and peaked 12 hours after TBI. Knocking down NMNAT2 with an injection of small interfering RNA in lateral ventricle significantly exacerbated neuronal degeneration and neurological deficits after TBI, which were accompanied by increased expression of BCL-2-associated X protein (Bax). @*Conclusion@#: NMNAT2 expression is increased and NMNAT2 exhibits neuroprotective activity in the early stages after TBI, and Bax signaling pathway may be involved in the process. Thus, NMNAT2 is likely to be an important target to prevent secondary damage following TBI.
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Objective To compare open reduction and internal fixation (ORIF) with closed reduction and internal fixation (CRIF) for the treatment of displaced fractures of the femoral neck in children,using a Meta-analysis.Methods Cochrane Library,PubMed Data,CNKI,Chinese Biomedical Database,Wanfang Data and Vip Data were searched for studies on treating displaced fractures of the femoral neck in children with ORIF and CRIF.In addition,hand search was conducted in relevant journals.Time limit for search was set from the beginning till August 2017.After eligible studies were included,a database was established of the demographic and clinical data of the patients included.Software Revman 5.0 was used for heterogeneity test of the quality of the studies included and the pooled relative risk (RR) and 95％ confidence interval (CI) were calculated.Results Ten studies were ultimately included involving 309 patients.Of them,163 were treated by ORIF and 146 by CRIF.The results showed that ORIF led to a significantly higher rate of anatomical reduction [RR =0.33,95％ CI (0.22,0.49),P ＜ 0.05] and a significantly higher good to excellent rate by Ratliff's evaluation [RR =0.73,95％ CI (0.62,0.85),P ＜0.05] than CRIF did;ORIF also led to a significantly lower rate of avascular necrosis[RR =1.93,95％ CI (1.13,3.31),P ＜ 0.05],a significantly lower rate of coxa vara [RR =2.38,95％ CI (1.07,5.27),P ＜0.05] and a significantly lower rate of nonunion [RR =2.72,95％ CI (1.05,7.04),P ＜ 0.05] than CRIF did.Conclusion In the treatment of displaced fractures of the femoral neck in children,ORIF can lead to better reduction,fewer complications and a higher good to excellent rate of functional recovery than CRIF.
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Objective To study the diagnostic value of procalcitonin and T cell subsets in infection after acute cerebral infarction(ACI).Methods One hundred and twenty-two patients with ACI in our hospital from February 2015 to January 2016 were selected and divided into the infection group(60 cases) and non-infection group(62 cases) according to whether infection occurring.The systolic blood pressure,diastolic blood pressure,body temperature,NI H SS score,cerebral infarction location,procalcitonin,CD4 level,CD8 level were compared between the two groups.The Logistic regression analysis was performed.Results The NIHSS score in the infection group was (14.9 ± 5.7) points,which was significantly higher than (10.6-4-3.8) points in the non-infection group,the differences were statistically significant (P＜0.05).The number of pons infarction in the infection group accounted for 35.48 ％ (22/60),which was significantly higher than 17.74 ％ (11/62) in the non-infection group,the differences were statistically significant(P＜0.05).The procalcitoninl level in the infection group was significantly higher than that in the non-infection group,while the levels of CD4 and CD8 were significantly lower than those in the non-infection group,the differences were statistically significant (P＜0.05).The multivariate Logistic regression analysis showed that the risk factors affecting infection after cerebral infarction included pons infarction,NIHSS score,procalcitonin,CD4 and CD8 levels.Conclusion Detecting procalcitonin and T cell subsets in the patients with ACI in clinical work is conducive to predict the infection occurrence.
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Objective To study the diagnostic value of procalcitonin and T cell subsets in infection after acute cerebral infarction(ACI).Methods One hundred and twenty-two patients with ACI in our hospital from February 2015 to January 2016 were selected and divided into the infection group(60 cases) and non-infection group(62 cases) according to whether infection occurring.The systolic blood pressure,diastolic blood pressure,body temperature,NI H SS score,cerebral infarction location,procalcitonin,CD4 level,CD8 level were compared between the two groups.The Logistic regression analysis was performed.Results The NIHSS score in the infection group was (14.9 ± 5.7) points,which was significantly higher than (10.6-4-3.8) points in the non-infection group,the differences were statistically significant (P＜0.05).The number of pons infarction in the infection group accounted for 35.48 ％ (22/60),which was significantly higher than 17.74 ％ (11/62) in the non-infection group,the differences were statistically significant(P＜0.05).The procalcitoninl level in the infection group was significantly higher than that in the non-infection group,while the levels of CD4 and CD8 were significantly lower than those in the non-infection group,the differences were statistically significant (P＜0.05).The multivariate Logistic regression analysis showed that the risk factors affecting infection after cerebral infarction included pons infarction,NIHSS score,procalcitonin,CD4 and CD8 levels.Conclusion Detecting procalcitonin and T cell subsets in the patients with ACI in clinical work is conducive to predict the infection occurrence.
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Objective To study the effects of mild hypothermia on cognitive function , synapsinⅠexpression and synaptic ultrastructure of hippocampus in epileptic rats induced by global cerebral ischemia. Methods Forty-eight male SD rats were randomly divided into control (NC) group, sham-operated (Sham) group, normothermic epilepsy (NT) group and mild hypothermic epilepsy (HT) group. The model of postischemic audio-genetic seizure was established by chest compression. Hypothermia intervention was given to HT group. Immunocytochemistry was conducted to detect the expressions of synapsin I in hippocampus at days 1 , 3, 14. the synaptic ultrastructure and cognitive function were respectively observed by electron microscope and Morris water maze. Results Compared with NC and Sham group, the expression of synapsinI in NT group was decreased, the escape latency was prolonged and across platform number decreased (P < 0.05). The synapses were decreased in number, and mitochondria was viewed swelling, synaptic membranes unclear, myelin fractured. Compared with NT group, the expression of synapsinⅠin HT group had no obvious change in 24 h but was significantly increased in days 3 and 14 (P < 0.01); The escape latency was decreased and the number of cross platform increased (P < 0.01); Synaptic structure was clear, with interface growing and postsynaptic density thickened. Conclusion Mild hypothermia may improve the cognitive function of the epileptic rats induced by global cerebral ischemia by upregulating the expression of synapsinⅠand alleviating the damage of synaptic structure.
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Objective To explore effects of mild hypothermia on early neurological deterioration (END) after main arterial occlusive with intra-arterial thrombolysis. Methods Fifty patients were randomly divided into mild hypothermia and conventional group, to compared the changes of ICP, CVP, MAP, Blood K+, PT, PLT, ScvO2 and NIHSS before- treatment and 24 h and 7 d after- treatment , prognosis and mortality were evaluated by MRS after 90 d. Results (1) Compared with pre-treatment, 7 d NIHSS of mild hypothermia group decreased (P < 0.01); 24 h, 7 d ICP and ScvO2 improved significantly (P < 0.05); 24 h decreased significantly (P <0.05), while 7 d blood K+ showed no differences. (2) Compared with conventional group, mild hypothermia group 7 d NIHSS and 24 h, 7 d ICP and ScvO2 improved significantly (P < 0.05). (3) The CVP, MAP, PT, and PLT showed no difference in two groups before and after-treatment . ( 4 ) Rate of good outcome in mild hypothermia group was significantly higher than conventional group in 90 days (P < 0.01); while the mortality rate showed no difference. Conclusions Mild hypothermia can obviously improve END in stroke with intra-arterial thrombolysise, bring better outcome among survival patients, though can not reduce mortality.
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<p><b>OBJECTIVE</b>To investigate the short-course and efficient way to treat mumps meningitis.</p><p><b>METHODS</b>Totally 155 cases of mumps meningitis treated by intrathecal injection with dexamethasone only once were enrolled as experimental group and 55 similar cases treated with the common therapy as control.</p><p><b>RESULTS</b>The time for recoveries of temperature, headache, the pathologic reflexes and the total time of treatment were 32 hours, 15 hours, 12 hours and 3.1 days, respectively, while those of the control group were 58 hours, 24 hours, 32 hours, 6.5 days respectively. There was statistical difference between the two groups (P<0.01 or 0.05).</p><p><b>CONCLUSIONS</b>Intrathecal injection with dexamethasone only once is efficient and safe in the treatment of mumps meningitis.</p>
Subject(s)
Child , Child, Preschool , Female , Humans , Infant , Male , Anti-Inflammatory Agents , Therapeutic Uses , Dexamethasone , Therapeutic Uses , Injections, Spinal , Meningitis, Viral , Drug Therapy , Mumps , Drug Therapy , Treatment OutcomeABSTRACT
Objective To investigate the distribution and the rate of drug sensitivity of dysenteric bacilli in Beijing from 2003 to 2004 so as to guide the choice of antibacterial. Methods This was a retrospective study. 254 shigellae were cultured from stool. The group and serotype were identified with biochemical and serologic tests. Kirby-Bauer method was used to detect the drug sensitivity rate. Results There were 196 strains of Shigellae flexneri and 58 Shigellae sonnei a-mong 254 strains of shigellae. The number of F4 was 106 strains in Shigellae flexneri. SMZ resistance rate was the highest ; fluoroquinolones, the third generation cephalosporins and phosphonomycins had much more sensitivity. The drug sensitivity rate to fluoroquinolones between Shigellae flexneri and Shigellae sonnei was different. Conclusion In 2003 and 2004, Shigellae flexneri is the dominant group in 254 Shigellae in Beijing. F4 is the dominant serotype among Shigellae flexneri. On antibacterial effects,fluoroquinolones is one of the most effective drug, but had a certain resistance rate. If the pathogen is resistant to fluoroquinolones, the third generation cephalosporins or phosphonomycins can be used.