Changes and clinical significance of serum S100β and neuron-specific enolase levels of children with acute brain injury / 中国医师杂志

Objective:To investigate the changes and clinical significance of serum S100β and neuron-specific enolase (NSE) levels of children with acute brain injury(ABI).Methods:100 children with ABI treated in the pediatric intensive care unit (PICU) of the Affiliated Hospital of Inner Mongolia Medical University from June 2019 to June 2020 were prospectively selected as the ABI group, and 30 normal children in the children′s health clinic of the hospital were selected as the control group. The serum S100β and NSE levels of all subjects was detected. According to the Glasgow Coma Scale (GCS), children with ABI were divided into severe brain injury group ( n=26), moderate brain injury group ( n=35) and mild brain injury group ( n=39). The prognosis of children with ABI after 3 months of treatment was evaluated according to the Glasgow prognosis scale (GOS) and they were divided into poor prognosis group ( n=26) and good prognosis group ( n=74). The relationship between serum S100β and NSE levels and the severity and prognosis of children with ABI was analyzed. Results:The serum S100β and NSE levels in the ABI group were significantly higher than those in the control group, and the serum S100β and NSE levels in children with ABI increased with the severity of injury and poor prognosis ( P<0.05). Pearson correlation analysis showed that serum S100β and NSE levels in children with ABI were positively correlated with GCS scores ( r=0.521, 0.643, P<0.05). Multiple logistic regression analysis showed that glucose(GLU) ( OR=1.631, 95% CI: 1.278-2.082), S100β ( OR=1.907, 95% CI: 1.558-5.877), NSE ( OR=2.896, 95% CI: 1.193-7.029) were independent prognostic factor in children with ABI ( P<0.05). Receiver operating characteristic (ROC) curve showed that the sensitivity, specificity and accuracy of serum S100β+ NSE [area under curve (AUC)=0.932, 95% CI: 0.875-0.969] in predicting the poor prognosis of children with ABI were higher than those of serum S100β(AUC=0.728, 95% CI: 0.643-0.803), NSE (AUC=0.808, 95% CI: 0.729-0.871) alone. Conclusions:The levels of serum S100β and NSE in children with ABI aresignificantly increased, which are closely related to the severity of the disease and prognosis. They can be used as predictors of poor prognosis in children with ABI. Combined detection can enhance the diagnostic value.

Research progress of different mechanical stimulation regulating chondrocytes metabolism / 生物医学工程学杂志

As a kind of mechanical effector cells, chondrocytes can produce a variety of physical and chemical signals under the stimulation of multiaxial load

The effect of PSD-95 inhibitor ZL006 on hypoxic-ischemic brain damage in neonatal rats / 中国小儿急救医学

Objective:To explore the effect of PSD-95 inhibitor ZL006 in neonatal rats with hypoxic-ischemic brain damage(HIBD) and its potential mechanism.Methods:The seven-day-old healthy Wistar rats( n=80) were randomly divided into control group( n=20), sham operation group( n=20) and operation group (HIBD model group, n=40). The operation group was randomly divided into ZL006, treatment group (intraperitoneal injection of ZL006, 10 mg/kg, n=20) and non-treatment group ( n=20). The neonatal rats of each group were randomly selected on the 1st and 7th day after operation, and the degree of cerebral infarction was observed by triphenyl tetrazolium chloride staining.The protein expression level of brain tissue in the injured area was examed by Western blot, and the effects of ZL006 on oxidative stress and antioxidant enzymes in rats with HIBD were evaluated by ELISA. Results:(1) On the first day after operation, the brain injury was the most serious in the non-treatment group, and the cerebral infarction decreased in the ZL006 treatment group.On the 7th day after operation, a little infarction could be seen in the operation group, but there was no significant difference among other three groups.(2)On the first day after operation, the expression of PSD-95 protein in the operation group was significantly higher than that in the control group and sham operation group( P<0.01). There was significant difference in the expression of PSD-95 protein between the ZL006 treatment group and the non-treatment group ( P<0.05). On the 7th day after operation, there was no significant difference in the expression of PSD-95 protein among three groups.(3)On the first day after operation, the expression of 4-hydroxynonenal in the operation group was significantly higher than that in the control group and sham operation group( P<0.01), and that in the non-treatment group was higher than that in the ZL006 treatment group ( P<0.05). On the 7th day after operation, there was no significant difference in the expression of 4-hydroxynonenal among three groups.(4) On the first day after operation, the expression of superoxide dismutase in the operation group was significantly lower than that in the control group and sham operation group( P<0.01), and that in the non-treatment group was lower than that in the ZL006 treatment group ( P<0.05). There was no significant difference in the expression level of superoxide dismutase among three groups on the 7th day after operation. Conclusion:It is suggested that PSD-95 may be involved in the early pathogenesis of HIBD, and ZL006 may have neuroprotective effect on HIBD in newborn rats.

The neuron-specific enolase levels of the cerebrospinal fluid in children with convulsion / 临床儿科杂志

Objective To explore the levels of neuron-speciifc enolase (NSE) of the cerebrospinal lfuid (CSF) in children with convulsion. Methods Ninety children with convulsion were enrolled. According to the frequency of convulsion attack, the children were divided into brief convulsion group 51 cases and prolonged convulsion group 39 cases, further, based on the etiology, the children were divided into viral encephalitis (VE) group, idiopathic epilepsy (EP) group, and febrile convulsion (FS) group. CSF was collected within 24-48 h convulsion attack. Twenty-three children with elective surgery were selected as a control group. CSF was collected before surgery. The NSE level of CSF were measured by ELISA method and compared among groups. Results The NSE levels of CSF in prolonged convulsion group and brief convulsion group were signiifcantly higher than that in control group, while the NES levels of CSF in prolonged convulsion group were signiifcantly higher than that in brief convulsion group (all P0.05). Conclusions Convulsion contributed to higher NSE levers of CSF, especially in children with prolonged convulsion attack or with VE. The NSE level of CSF can be regarded as an early objective indicator of brain damage after convulsions.