The pathogenesis of status epilepticus is closely associated with brain injury. Some animals experiments have proved that the activity of calcium / calmodulin-dependent protein kinase 2 ( CaM kinase Ⅱ ) ,oxidative stress, and the imbalance of nervous immune-endocrine factors are not only involved in the mechanisms of status epilepticus, but also act as the initial factor in neuronal injury. The pathophysiological changes after SE,such as acute brain ischemia, hypoxia and the reduced glucose utilization, over-excited neurons, N-methyl-Daspartate (NMDA) and non-NMDA receptor activated, a large amount of cation influx, can give rise to acute necrosis of neurons, also initiate the expression of apoptotic genes, at last leading to apoptosis by cell apoptotic enzymes cascade reaction. Studies have found that the pathway of death receptor activation, mitochondrial damage and endoplasmic reticulum stress mediated the neuronal apoptotic signal transduction after SE.

BACKGROUND:Hydrothermal condition of oral environment has an effect on the mechanical properties of dental core materials.
OBJECTIVE:To evaluate effect of water storage on the weight change rates and flexural properties of three dual-cure core buildup composite resins.
METHODS: Rectangular specimens (25 mm×2 mm×2 mm) were prepared from three dual-cure core buildup composite resins (LuxaCore Smartmix Dual, Para core and Clearfil DC Core). Specimens were stored in distiled water at 37℃ for 0, 1 day, 1, 2, 3 weeks and 1 month, respectively, weighted and then subjected to three-point bending test in a universal testing machine.
RESULTS AND CONCLUSION: Weight change rates of the three composite resins increased with immersion time; at the same immersion time, weight change rates of three composite resins ranked as the folowing order: LuxaCore Smartmix Dual > ParaCore > Clearfil DC Core. The flexural strength of LuxaCore Smartmix Dual decreased with immersion time. The flexural strength of ParaCore showed no significant change during 3 weeks immersion (P > 0.05), while it showed a significant decreasing after 1 month immersion (P < 0.05). There was no significant change on the flexural strength of Clearfil DC Core in the whole immersion process(P > 0.05). The flexural modulus of LuxaCore Smartmix Dual showed a decreased trend in the whole immersion process, but it showed that there was no significant change during the first 2 weeks(P > 0.05), while a significant decrease occurred after 3 weeks and 1 month (P < 0.05). Compared with original specimens, the flexural modulus of ParaCore and Clearfil DC Core showed a decreased trend, but this change was not significant (P > 0.05); the flexural properties of three composite resins showed a fluctuant decreased trend along with weight changes increased. To sum up, Clearfil DC Core showed the best water resistance among three composite resins.

Recent studies have shown that brain natriuretic peptide ( BNP ) may be the link between cardiovascular disease and metabolic system. The role for BNP in metabolic pathways has already been the subject of intense interest. This article reviews the evidence of the linkage between BNP and metabolic system.

Objective To explore the potential changes of connexin Cx36 in hippocampus and cortical neurons of rats with hyperthermia -induced convulsion.Methods Rats were divided into 2 groups according to the random number table method:normal control group and experimental group.Febrile convulsion model was elicited through im-mersion in warm water.The experimental group was generated following febrile convulsion model:hyperthermia group and febrile convulsion group.Among normal control group,hyperthermia group and febrile convulsion group,western blot analysis and immunofluorescence labeling techniques were used to examine the expression of Cx36 protein in the hippo-campus and cortex area.One -Way ANOVA was used to compare the mean of multiple sample,the LSD test was used to compare the two means.Tamhane′s test was used when variance were uneven.Results The incubation period,seizure duration and temperature were (4.39 ±0.08)min,(5.38 ±0.07)min,(41 .87 ±0.06)℃ after hyperthermia-in-duced convulsion,respectively.Western blot analysis showed that the expression of Cx36 protein in the hippocampus and cortex area decreased gradually after 1 0 times of seizure in normal control group,hyperthermia group and febrile convulsion group,and the febrile convulsion group decreased most obviously.Compared with normal control group and hyperthermia group,respectively,in febrile convulsion group Cx36 expression obviously decreased in the hippocampus and cortex in rats with 1 ,5,1 0 seizure times induced by hyperthermia,and with the increase of number of induced con-vulsion,the expression of Cx36 was significantly decreased in the cortex (0.1 04 ± 0.01 2)and CA1 (0.091 ± 0.01 1 ),CA3 (0.090 ±0.01 1 )and DG (0.092 ±0.01 2)areas of hippocampal neurons compared with the normal control group (0.21 2 ±0.01 7,0.1 67 ±0.01 3,0.1 59 ±0.01 4,0.1 71 ±0.01 3)and the hyperthermia group (0.1 89 ± 0.006,0.1 44 ±0.008,0.1 29 ±0.005,0.1 65 ±0.01 1 )(all P <0.05).Furthermore,the extent of reduction in Cx36 expression seemed to correlate with the number of seizures.Conclusion With the increase of thermal seizure frequen-cy,Cx36 expression of rats was decreased obviously which may lower convulsion threshold and lead to recurrent seizures.

The increasing identification of genetic causes for epilepsy over the recent years improves the understanding of the underlying epileptog enic process,and allows for the possibility of directed therapeutic approaches.An ideal antiepileptic therapy consists of a drug which is able to influence the functional changes caused by a specific pathogenic variant.In this review,we describe the current precise medicine approaches in genetic epilepsies.Currently established or investigated precise medicine treatments include the ketogenic diet in patients with glucose transporter typel (GLUT1) deficiency,sodium channel blockers in patients with KCNQ2 mutations,and mechanistic target of rapamycin (mTOR)-inhibitors in patients with SCN2A and SCN8A mutations.These predominantly represent already available treatments that were repurposed for use in epilepsy.The development of new therapeutic agents aiming at targets identified in genetic epilepsies will advance epilepsy treatment considerably.

To elucidate the effects of Zearalenone(ZEA) on proliferation and cell cycle of cultured thymic epithelial cells in mice,trypan blue staining and flow cytometric analysis were performed.At the concentrations from 1 to 25 mg/L,ZEA displayed a significant inhibitory action to proliferation of thymic epithelial cells in its dose-and timedependent manner.Higher doses(10-25 rag/L)ZEA could induce a profound increase in G2/M phase with arrest of thymic epithelial cells in the G2/M phase in a dose-dependent manner.In conclusion,ZEA could be assumed that there were toxic effects on the thymie epithelial cells of mice in vitro.

Objective To investigate the changes in the phosphorylation of N-methyl-D-aspartate (NMDA) receptors in spinal dorsal horns in a rat model of neuropathic pain induced by chronic compression of dorsal root ganglion (CCD).Methods Ninety-six male Sprague-Dawley rats,weighing 200-250 g,were randomly divided into 3 groups (n =32 each) using a random number table:control group (group C),sham operation group (group S) and group CCD.In CCD group,a small stainless steel needle (4 mm in length and 0.8 mm in diameter) was inserted into the L4,5 intervertebral foramen in pentobarbital sodium-anesthetized rats,developing intervertebral foramen stenosis and hence producing a chronic steady compression of the dorsal root ganglion.In group S,the intervertebral foramen was only exposed without inserting the needle.The paw withdrawal latency (PWL) was measured at 1 day before operation and 1,2 and 4 weeks after operation.The rats were then sacrificed after measurement of PWL and the lumbar enlargement segments of the spinal cord were removed for determination of the expression of interleukin-1β (IL-1β) and phosphorylation of NMDA receptor NR1 subunits at serine 896 (pNR1S896) on the injured side by immunohistochemistry and Western blot.Results Compared with group C,the PWL was significantly shortened at each time point after operation,and the expression of IL-1β and pNR1S896 was up-regulated in group CCD,and the PWL was shortened at 1 week after operation,the expression of IL-1β and pNR1S896 was up-regulated,and no significant change was found in PWL and expression of IL-1β and pNR1S896 at the other time points in group S.Compared with group S,the PWL was significantly shortened at each time point after operation,and the expression of IL-1β and pNR1S896 was up-regulated in group CCD,Compared with the baseline value at 1 day before operation,the PWL was slowly shortened starting from 1 week after operation,and decreased to the lowest level at 2 weeks after operation and maintained at this level for 2 weeks,the expression of IL-1β and pNR1S896 was slowly up-regulated starting from 1 week after operation,and increased to the highest level at 2 weeks after operation and maintained at this level for 2 weeks in group CCD,and the PWL was shortened at 1 week after operation,and the expression of IL-1β and pNR1 S896 was up-regulated in group S.Conclusion The development and maintenance of neuropathic pain induced by CCD are related to phosphorylation of NMDA receptors in spinal dorsal horns of rats.

Objective To evaluate the effectiveness of autologous platelet-rich gel (APG)in the repair of diabetic foot ulcers.Methods This study was a single-center,prospective,randomized controlled trial.A total of 60 patients with diabetic foot ulcers (Wagner grade 2 - 3 )were randomly divided into autologous APG group (treatment group)and recombinant bovine basic fibroblast growth factor gel group (control group).After 8 weeks, we compared wound healing rate and wound healing time at five levels (overall ulcer,superficial ulcer,sinus ulcer, Wagner 2 and Wagner 3)in the two groups.Results In APG treatment group and control group,the healing rate of overall sample ulcer (93.33% vs .63.33%,P =0.005),sinus ulcer (84.62% vs .36.36%,P =0.033),Wagner 3 (81.82% vs .30%,P =0.030)differed significantly,but did not significantly differ in superficial ulcer (100%vs .78.95%,P =0.106)or Wagner 2 (100% vs .80%,P =0.106).Ulcer healing time was 31 d vs .41.5 d,23 d vs .32 d,32 d vs .56 d,25 d vs .32 d,38 d vs .56 d,with significant difference between the two groups (P <0.05). Conclusion Autologous platelet-rich gel can effectively increase the curative rate of diabetic foot and shorten healing time.

Objective To understand the effectiveness of medical cooperation in the Affiliated Hospital of Southwest Medical University with a county hospital for providing a reference basis for medical cooperation.