Objective To investigate the expression of GABA_A receptor in the process of activation of hippocampal neurons and explore the epileptogenesis. Methods The activated hippocampal neuron products (experiment group) and the serum-free-medium (control group) were injected into rat's lateral ventricle, respectively, then we observed the behaviors, electroencephalographic (EEG) and immunochemical changes of GABA_A receptor in rats. Results 10~30 min after administration of pentetrazole (PTZ)-activated hippocampal neuronal products, Ⅱ～Ⅲ class epileptic behaviors were found in the experiment group. EEG showed many short distance moderate amplitude sharp waves, sharp and slow wave complex. The behaviors of rats and EEG results were normal in the control group. GABA_A receptor positive cells extensively spread over cerebral cortex, hippocampal CA_1 and dentate gyrus in the control group, and the expression of GABA_A receptor significantly decreased in the experiment group.Conclusion Activated hippocampal neuronal products could induce epilepsy. One of its mechanisms might be related to the decrease of GABA_A content.

Objective To investigate the time course of cerebral infarction with diffusion kurtosis imaging-related parameters.Methods According to the time interval from symptom onset to MRI examination, 114 cases of cerebral infarction were divided into five groups:8 cases of hyperacute phase(less than 6 hours), 14 cases of acute(>6-24 h), 60 cases of early subacute(>24 h-7 d), 20 cases of late subacute(>7-14 d), and 12 cases of chronic phase ( >14 d-2 months).They underwent routine diffusion weighted imaging (DWI) and diffusion kurtosis imaging (DKI) scanning, and apparent diffusion coefficient ( ADC) and DKI-derived parameters were obtained from them.The derived diffusion parameters were compared among different phases in the patients , and the percent of changes in the infarcted regions were calculated.Paired t-test was used to compare the difference of each parameter between the infarcted region and contralateral normal region , and their correlation with time interval was tested using Pearson correlation analysis.Results Except for chronic phase , mean kurtosis ( MK) , axial kurtosis ( K∥) , radial kurtosis (K⊥)map showed uneven high signal in the infarcted regions , while mean diffusion(MD), axial diffusion(D∥), radial diffusion(D⊥) showed uniform low signal.MK values in the infarcted regions of hyperacute, acute, early subacute and late subacute phase (1.331 ±0.357,1.578 ±0.453,1.519 ±0.455, 1.403 ±0.275 ) increased significantly , compared with the contralateral normal mirror regions ( 0.850 ± 0.236,0.827 ±0.194,0.865 ±0.144,0.939 ±0.212) (t values were 5.242,6.907,12.416,5.629, respectively.P values were all less than 0.01 ).MK, K∥, K⊥ achieved a peak in the acute and early subacute phase , and showed more amplitude than the decrease of MD , D∥, D⊥.Then they gradually reduced, and tended to normalize.MK, MD, ADC had a significant correlation with the time onset of cerebral infarction ( r was 0.354, 0.747, 0.723, respectively, P values were all less than 0.05 ).Conclusion Diffusion kurtosis imaging can provide more diffusion information than conventional DWI , which can better reflect the microstructure changes in tissue.

Neural stem cells were labeled with superparamagnetic iron oxide (SPIO) and tracked by MRI in vitro and in vivo after implantation. Rat neural stem cells were labeled with SPIO combined with PLL by the means of receptor-mediated endocytosis. Prussian blue staining and electron microscopy were conducted to identify the iron particles in these neural stem cells. SPIO-labeled cells were tracked by 4.7T MRI in vivo and in vitro after implantation. The subjects were divided into 5 groups, including 5 x 10(5) labeled cells cultured for one day after labeling, 5 x 10(5) same phase unlabeled cells, cell culture medium with 25 mug Fe/mL SPIO, cell culture medium without SPIO and distilled water. MRI scanning sequences included T(1)WI, T(2)WI and T(2)*WI. R(2) and R(2)* of labeled cells were calculated. The results showed: (1) Neural stem cells could be labeled with SPIO and labeling efficiency was 100%. Prussian blue staining showed numerous blue-stained iron particles in the cytoplasm; (2) The average percentage change of signal intensity of labeled cells on T(1)WI in 4.7T MRI was 24.06%, T2WI 50.66% and T(2)*WI 53.70% respectively; (3) T2 of labeled cells and unlabeled cells in 4.7T MRI was 516 ms and 77 ms respectively, R(2) was 1.94 s(-1) and 12.98 s(-1) respectively, and T(2)* was 109 ms and 22.9 ms, R(2)* was 9.17 s(-1) and 43.67 s(-1) respectively; (4) Remarkable low signal area on T(2)WI and T(2)*WI could exist for nearly 7 weeks and then disappeared gradually in the left brain transplanted with labeled cells, however no signal change in the right brain implanted with unlabeled cells. It was concluded that neural stem cells could be labeled effectively with SPIO. R2 and R(2)* of labeled cells were increased obviously. MRI can be used to track labeled cells in vitro and in vivo.

Objective To concentrate on the morbidity of cerebral microbleed (CMB) in patients with hypertension and to analyze the predilection and risk-factor of cerebral microbleed.Method Hypertensive patients were divided into the simple hypertention group, hypertention group with lacunar infarction and hypertention group with cerebral infarction.All of these 65 patients received examination of susceptibility-weighted imaging.Results Ninety-one focuses of cerebral microbleeds were found in these patients:58.2% of these focuses were in both basal ganglia and cerebral ganglion;35.2 percent were in cortex and subcortex;6.6 percent were in brainstem and cerebellum.The total morbidity of CMB was 33.8 percent, 52.4 percent in the group with lacunar infarction and 38.1 percent in the group with cerebral infarction, both were significantly higher than that of 8.7 percent in the simple hypertensive group (χ2= 8.08,P<0.01 andχ2=3.86, P<0.05).Conclusions The focus of CMB suggested the hemorrhagic tendency in endocranial capillary.CMB can be used as a routine exam for the hemorrhagic tendency in endocranial capillary.Synthetic analysis of risk-factor and the result of SWI help clinicians choose suitable treatment for each patient.

Objective:To evaluate the status and influencing factors of psychiatric comorbidities of patients with epilepsy (PWEs) in Hubei province during the outbreak of COVID-19.Methods:From February 23, 2020 to March 5, 2020, a network questionnaire survey (including demographic characteristics, seizures, Generalized Anxiety Disorder Scale-7 score, Patient Health Questionnaire-9 score, Insomnia Severity Index score) was conducted among 570 PWEs who visited the Epilepsy Center of Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology during April 1, 2019 and January 20, 2020. SPSS 22.0 software was used for correlation analysis of sociodemographic characteristics, epilepsy related factors, perceived threat to the COVID-19 and psychiatric comorbidity (depression, anxiety and insomnia) of PWEs during the COVID-19 epidemic.Results:A total of 362 valid questionnaires were included for analysis (the response rate was 63.51%,362/570). Thirty-four (9.4%), forty-seven (13.0%) and seventy-one (19.6%) patients suffered from anxiety, depression and insomnia, respectively. Patients with seizure frequency ≥2 times/month before the epidemic ( OR=3.395,95% CI 1.561-7.384, P=0.002), poor subjective quality of life during the epidemic ( OR=10.753,95% CI 1.938-59.654, P=0.024), and moderate to severe worry about bad impact of the epidemic on epilepsy ( OR=3.077, 95% CI 1.382-6.853, P=0.006) were more likely to be anxious. Patients with poor subjective quality of life during the epidemic ( OR=6.188, 95% CI 1.317-29.079, P=0.021) were more likely to be depressed. Patients with COVID-19 related symptoms ( OR=3.609, 95% CI 1.674-7.778, P=0.001), children ( OR=3.090, 95% CI 1.759-5.431, P<0.001), seizure frequency ≥2 times/month before the epidemic ( OR=1.907, 95% CI 1.017-3.575, P=0.044), and moderate to severe worry about unanticipated seizures ( OR=2.555, 95% CI 1.370-4.764, P=0.003) were more likely to suffer from insomnia. Conclusions:During the COVID-19 epidemic, parts of PWEs suffered from anxiety, depression and insomnia. PWEs with poor subjective quality of life, high frequency of epileptic seizures before the epidemic, excessive worry about bad impact of the epidemic on epilepsy and excessive worry about unanticipated seizures were prone to anxiety, depression and insomnia.

Objective To study the validity and reliability of Tengdao's swallowing standard for stroke pa-tients with dysphagia.Methods A total of 128 patients with postroke dysphagia took the swallowing test and then were divided into three sub-groups.Their scores on Tengdao's evaluation and their fluoroscopy results were analyzed using Spearman's correlation coefficient.Intra-class coefficients (ICCs)were used to examine the intra-rater and in-ter-rater reliability of Tengdao's evaluation.Results TenIgdao's evaluation possessed good validity and reliability.There was a high correlation between the scores in Tengdao's evaluation and fluoroscopy results. Conclusions Tengdao's evaluation is valid,reliable,simple and safe.It can be used in the clinic to evaluate the stroke patients with dysphagia.

In order to better understand the clinical manifestation of systemic lupus erythematosus (SLE) with intracranial hypertension syndrome (IHS), we analyzed the clinical features and treatment of a typical SLE patient with IHS. SLE is one of the most unpredictable autoimmune diseases involving multiple organ systems that is defined clinically and associated with antibodies directed against cell nuclei. IHS is an uncommon manifestation of neuropsychiatric SLE (NPSLE) and is characterized by an elevated intracranial pressure, papilledema, and headache with occasional abducens nerve paresis, absence of a space-occupying lesion or ventricular enlargement, and normal cerebrospinal fluid chemical and hematological constituents. IHS has been reported in a few sporadic cases in patients with SLE worldwide, but rarely has been reported in China. In this study, a 34-year-old female SLE patient with IHS was reported and pertinent literature reviewed. The clinical presentation, image logical features, and investigatory findings were discussed.
Diagnosis, Differential ; Intracranial Hypertension/diagnosis ; Intracranial Hypertension/*etiology ; Lupus Erythematosus, Systemic/*complications ; Lupus Erythematosus, Systemic/diagnosis

The clinical characters, diagnosis and differential diagnosis of paroxysmal kinesigenic choreoathetosis (PKC), and efficacy of the anti-epileptic drugs (AEDs) were investigated. Thirty-one patients with PKC were collected, and the clinical characters and change of EEG were analyzed. The average age of the first attack was 16.8 years old and the pinnacle was 10 to 20 years old. There were definite causes for every attack and the sudden movement was the most common one (92%). Time for the whole attack was always less than 1 min. The attack presented with muscle tension disturbance (83.9%), movement like dancing (16.1%), abnormal movement of mouth and face and other symptoms (16.2%). The attack tended to be very frequent and 71% patients were beyond once per day. The EEG examination and image scan of primary PKC were normal in most patients. Low dosage of AEDs could control the attack of 50%-77.3% patients. It was concluded that PKC was a common disease of movement disorder. The therapy by AEDs was very effective. PKC should be differentiated from epilepsy and the relationship between PKC and epilepsy needs further research.
Anticonvulsants/*therapeutic use ; Diagnosis, Differential ; Dystonia/diagnosis ; Dystonia/drug therapy ; Electroencephalography ; Epilepsy/diagnosis ; Young Adult

To investigate the effects of VitalStim therapy coupled with conventional swallowing training on recovery of post-stroke dysphagia, a total of 120 patients with post-stroke dysphagia were randomly and evenly divided into three groups: conventional swallowing therapy group, VitalStim therapy group, and VitalStim therapy plus conventional swallowing therapy group. Prior to and after the treatment, signals of surface electromyography (sEMG) of swallowing muscles were detected, swallowing function was evaluated by using the Standardized Swallowing Assessment (SSA) and Videofluoroscopic Swallowing Study (VFSS) tests, and swallowing-related quality of life (SWAL-QOL) was evaluated using the SWAL-QOL questionnaire. There were significant differences in sEMG value, SSA, VFSS, and SWAL-QOL scores in each group between prior to and after treatment. After 4-week treatment, sEMG value, SSA, VFSS and SWAL-QOL scores were significantly greater in the VitalStim therapy plus conventional swallowing training group than in the conventional swallowing training group and VitalStim therapy group, but no significant difference existed between conventional swallowing therapy group and VitalStim therapy group. It was concluded that VitalStim therapy coupled with conventional swallowing training was conducive to recovery of post-stroke dysphagia.

The purpose of this study was to evaluate the effect of adenosine A2A receptor antagonist ZM241385 on amygdala-kindled seizures and its roles in epileptogenesis. Electrodes were implanted into the right amygdala of male adult Wistar rats. Kindling was accomplished by using stimulus strength of 500 μA applied daily to the amygdala until 10 consecutive stage 5 seizues were induced. Then effect of ZM241385 was studied in fully kindled rats after intracerebroventricular administration of the drug. In addition, the effect on kindling progression was evaluated through ZM241385 injection before daily stimulation. In all experiments, behavioral changes in the rats in response to ZM241385 were monitored closely. The results showed that, in fully amygdala-kindled rats, ZM241385 (0.001-0.1 nmol/L) decreased afterdischage duration (ADD), motor seizure duration (MSD), stage 5 duration (S5D) and seizure duration (SD), but only the effect on ADD was dose-dependent. The doses of 0.001-0.1 nmol/L had no influence on stage 4 latency (S4L) and seizure stage (SS). The dosages of 0.0001 and 1 nmol/L of ZM241385 did not exert any effect on all seizure parameters. In contrast to the results in fully amygdala-kindled rats, ZM241385 (0.001-0.1 nmol/L) had minimal or no effects on the progression of amygdala-kindled seizures. We are led to the conclusion that although ZM241385 had no influence on the progression of amygdala-kindled seizures, it had potent anti-convulsant profile and little adverse effects at the dosage of 0.001-0.1 nmol/L, suggesting that the agent is effective against the amygdala-kindled seizures.