Child ; Child, Preschool ; Humans ; Leukemia ; immunology ; prevention & control ; Vaccination

Objective To evaluate cortisol level in experimental frequent febrile seizures model rats.Methods Rats were divided into 3 groups: normal control group(n=10,NC group),hyperthermic control group(n=12,HC group) and febrile seizures group(n=21,FS group).Cortisol level in serum and hippocampus of rats were determined by ELISA.Ultrastructural changes of neurons in hippocampal region CA1 was observed by electron microscop.Results 1.No special ultrastructual findings were observed from neurons in hippocampal CA1 in NC and HC group.In FS group,the neuronal degeneration and edema,the mitochondrial degeneration and edema,the mitochondrion ridge obscured or disappeared.2.Cortisol levels in serum and hippocampus in FS group [(26.57 ? 15.94)?g/L and((4.11)?1.74)?g/L,respectively] were significantly lower than those in HC group [(40.04 ? 15.72)?g/L and(6.70?3.45)?g/L,respectively](P0.05).Positive correlations were demonstrated between serum cortisol level and hippocampus cortisol level(r=0.40 P

0.05).Conclusions Frequent FS might not change the expression levels of IL-6 and TNF-? in hippocampus.IL-6 and TNF-? might not play a role in development of FS induced brain damage.

The rapid development of silicon microelectrode arrays provides an ideal means for the study of spatio-temporal features of neuronal activity in the brain. The stability of the linear silicon electrode array (LSEA) in recording neuronal potentials and its validity in recording unit activity are investigated. The experimental results showed that during the recording of field potentials in the hippocampal CA1 region of anesthetized rats, upward and downward movements of the recording probe for a distance of 200 ?m did not affect the orthordromic and antidromic evoked potentials significantly. The data indicated that the probe movements caused very small damage to the neurons, and the recording was stable. The contact sites that located in the pyramidal cell layer acquired CA1 neuronal unit activity validly. Different types of unit activity from independent neurons were easily distinguished in epochs of recording from a same recording site. These results demonstrated the features of the LSEA, including the facility of probe manipulation, the stability of recording and the abundance of data acquirement. The data will be helpful to the researchers involved in the application of microelectrode array for neuroscience researches.

Objective To explore the serum proteomics characteristics of early carcerization of post-hepatitic cirrhosis.MethodsThe serum protein profiles were detected of 62 patients with post-hepatitic cirrhosis and 100 patients with hepatic carcinoma in Ⅰ-Ⅱ stage (T1-2N0M0) and cirrhosis by surface-enhanced laser desorption/ionization-time of flight-mass spectrometry (SELDI-TOF-MS) IMAC30-Cu2+ ProteinChip array (Ciphergen Biosystems Inc.,USA),the distinct proteins were analyzed and a classification tree model was established by using Biomarker Patterns software.The diagnostic efficacy of the model was blindly tested using the serum protein from both groups.ResultsThe serum protein profiles of post-hepatitic cirrhosis and hepatic carcinoma complicating with cirrhosis were analyzed and a classification tree model was established including 4 distinct proteins with different M/Z.In the training mode,the accuracy was 99.4% (161/162) on differential diagnosis to differentiate post-hepatitic cirrhosis and hepatic carcinoma complicating with cirrhosis,the sensitivity and specificity were 99.0% (99/100) and 100.0% (62/62),respectively,on the diagnosis of hepatic carcinoma complicating with cirrhosis.In the testing mode,the accuracy of differential diagnosis was 94.4% (153/162),the sensitivity and specificity were 95.0% (95/100) and 93.5% (58/62) on the diagnosis of hepatic carcinoma complicating with cirrhosis.ConclusionSELDI-TOF-MS ProteinChip technique is of convenient and rapid,and with high sensitivity and specificity on the diagnosis of early carcerization of post-hepatitic cirrhosis.

Objective To explore the perioperative experiences of congenital heart disease in infants.Methods From Jan.2000 to Aug.2006,109 patients with congenital heart disease were operated in our department,their clinical data were retrospectively collected and analyzed.The patients′ age ranged from 31 days to 3 years old (13.6 months).The body weight ranged from 2.1 to 16 kg (8.6 kg).Ninety-three patients were operated under hypothermic anaesthesia with cardiopulmonary bypass(CPB).Sixteen patients underwent deep thermal and low flow CPB.Ultrafiltration was used in 62 patients.Results There were 8 deaths and the operative mortality was 7.3%,4 cases caused by low output syndromeclos(LOS),3 cases caused by pulmonary hypertension and 1 case caused by lung intection.The morbidity was in 25 cases(22.9%),the main complications were LOS in 6 patients and respiratory complications in 18 patients,hydropericardium in 1 case,respectively.Conclusion To improve the operative and CPB technique,and to improve the skills of the postoperative managements of LOS and respiratory complications are the main points in the success of the cardiac operation in infants.

This research aimed at studying the effects of irrigation and rhizome length on the survival of ratio, yield and quality of Glycyrrhiza uralensis in wild tending condition. Employed the split-block design to carry out the field experiment, sampled with the quadrat method to measured the relative growth indexes and to estimate the yield, used the HPLC (high performance liquid chromatog- raphy ) method to measure the glycyrrhizin in the rhizome and adventitious root of the G. uralensis in this study. The quantity of the adventitious roots and the survival ratio were increased significantly as the length of the rhizome increased (P < 0.01), but the length of the rhizome had no remarkable effect on the content of glycyrrhizin. The average content of the glycyrrhizin in the adventitious root and rhizome could reach 3.03% and 2.12% after 3-year wild tending, respectively, and this results indicated that the quality of the glycyrrhiza using this method was much better than that from cultured glycyrrhiza with the reproducing method of seeding. so using the rhizome as reproductive material to produce the glycyrrhiza under the wild tending condition could get the high quality glycyrrhiza quick- ly and steadily, this phenomenon could be explained by the Hypothesis of synthetic inertia of the medicinal components from the wild material of G. uralensis. But the maximum yield with this method was just more than 945 kg x hm(-2) in this study. So the further work of how to increase the yield in the practical application with the method found in this study need to be done in the next research.
Agricultural Irrigation ; Culture Techniques ; methods ; Glycyrrhiza uralensis ; growth & development ; metabolism ; Glycyrrhizic Acid ; metabolism ; Rhizome ; growth & development ; Survival Analysis

Ultrasonic microbubbles were used to open blood-brain barriers (BBB) with a reversed and limited behavior feature in the study, which could improve the brain-targeted delivery of anti-tumor drugs. The glioma rat model was prepared. Low-frequency ultrasound was combined with microbubbles to affect the permeability of BBB compared with the permeability of independently administered Evans blue (EB) crossing BBB. Time point and length of ultrasound were investigated whether they affect the permeability of BBB and the damage of brain tissue. The effect of the growth time of glioma on BBB permeability was explored. Only glioma had a very little impact on BBB permeability. However, ultrasonic microbubbles opened the BBB with the features of temporary, limited and reversed behavior and improved EB and magnetic resonance imaging contrast agent penetrating BBB. A length of 30 s ultrasound is appropriate for opening BBB and no damage of brain tissue. Drugs should be injected before ultrasound so that they enter into brain as BBB opening. Ultrasonic microbubbles can open BBB effectively and safely, which improve drugs penetrating BBB under proper time point and length.
Animals ; Blood-Brain Barrier ; Contrast Media ; Drug Delivery Systems ; Glioma ; drug therapy ; Magnetic Resonance Imaging ; Microbubbles ; Permeability ; Rats ; Ultrasonics

AIM: To evaluate the efficacy of combined therapy for amblyopia in children by making use of pattern visual evoked potential ( P-VEP) game.
METHODS: This was a prospective case control study. These asthenopic children were divided into two groups. The control group ( 66 eyes of 49 patients ): occlusive therapy with glasses, cover, precision work, red light treatment and so on, later the stereo vision training was added. The experimental group (72 eyes of 52 patients):conventional methods mentioned above with P - VEP games.
RESULTS: The total effective rate and cure rate of experimental group in 6mo were higher than those of control group. The overall effective rate was 94. 4% in the experimental group and 83. 3% in the control group. There was a statistically significant difference between them (P<0. 05).
CONCLUSION: The comprehensive therapy by making use of P-VEP game is an individualized effective new way in treating amblyopia.

OBJECTIVETo investigate the placement of a long tube into the small intestine under fluoroscopic guidance and to evaluate its decompression effect on early postoperative small bowel obstruction (EPSBO).

METHODSFifty-four patients with EPSBO requiring decompression between April 2010 and July 2014 were enrolled in the study. Insertion of a long tube was guided by fluoroscopy. We first used the guide wire to pass the pylorus and then used the 10 Fr feeding tube as an exchangeable tube to put the superstiff wire into the duodenum. Finally the long tube could be passed over the guide wire through the pylorus into the intestine. The total procedure time, the radiation exposure time, and the incidence of complications were evaluated.

RESULTSThe long tubes passed into the jejunum on initial insertion for all patients, so the success rate of this technique was 100%. The long tube was inserted into ileum in 18 patients. The mean total procedure time was 34.4 ± 8.6 minutes, and the mean radiation exposure time 18.9 ± 6.8 minutes. A total of 47 patients (87%) experienced full recovery following long-tube decompression and without the need for surgical intervention.

CONCLUSIONSUsing the wire-exchange technique, it is easy to place a long tube into the small bowel under fluoroscopic guidance. This decompression method is safe and effective for management of EPSBO.

Adult ; Aged ; Decompression, Surgical ; methods ; Female ; Fluoroscopy ; Humans ; Intestinal Obstruction ; surgery ; Male ; Middle Aged ; Postoperative Complications ; surgery ; Retrospective Studies