Many studies have shown that changes in ion channels,abnormal regulation of neurotransmitters and their receptors,blood-brain barrier damage,inflammation,oxidative stress etc,are all related with seizures.Animal models of epilepsy,focusing on autopsy of patients with epilepsy or pathological changes of epileptic,have found that there is a certain relationship between astrocytes and epilepsy,but the cause has remained unclear.At present,most of antiepilepfic drugs work on the target of neurons,which have certain impact on the patient's congnitive and brain function.Therefore,to investigate the pathogenesis of epilepsy from the perspective of astcytes,it might help to identify new intervention targets for new antiepileptic drugs.

Paroxysmal supraventricular tachycardia (PSVT) is one of the frequent cardiovascular diseases.In recent years, cryoablation has become a research hot spot for PSVT treatment.Theoretically, its operability and safety are both better than those of radiofrequency ablation.Cryoablation can significantly reduce risk of ablation complications, but how to reduce recurrent rate after cryoablation is still a problem in the future.The present article made a review on main therapeutic methods of PSVT, especially application of cryoablation.

Epidemiologic Methods ; Humans ; Population Surveillance ; Public Health

Objective To explore the impact of genetic background on pancreatic p-cell first-phase secretion function with L-arginine (L-ARG) stimulation test.Methods Plasma insulin level was detected in 201 cases before and after L-ARG stimulation test.Among them, 61 cases were newly diagnosed type 2 diabetic patients with family history of diabetes ( FH + DM ) , 55 newly diagnosed type 2 diabetic patients without family history of diabetes ( FH - DM) ,31 with normal glucose tolerance and family history of diabetes ( FH + ) 54 with normal glucose tolerance but without family history of diabetes ( FH - ).Homeostasis model assessment ( HOMA) was used to estimate insulin resistance (HOMA-IR).Results It was premised that gender, age and BMI were similar among the 4 groups.(1)TC,TG,fasting plasma glucose,2h plasma glucose,fasting insulin and HOMA-IR in the two groups of newly diagnosed type 2 diabetic patients with or without family history of diabetes were significantly higher than those in the two groups of normal glucose tolerance with or without family history of diabetes.The multiples of the peak level and the base level of insulin secretion in the groups of newly diagnosed diabetes were significantly lower than those in the groups of normal glucose tolerance with and without family history(P <0.05).(2) Insulin secretion reached a peak in 2 minutes and started to decline in 4 minutes in all the four groups.( 3 ) The multiples of the peak level and the base level of insulin secretion in normal glucose tolerance group with family history of diabetes were 20.8% lower than those in the group without family history, being 7.27 and 9.18 respectively ( P < 0.05 ).(4)Two-minute peak insulin secretion, HOMA-IR and age in the newly diagnosed type 2 diabetic group with family history of diabetes was significantly lower than these in the group without family history ( P < 0.05 ).The multiples of the peak level and the base level of insulin secretion in the newly diagnosed type 2 diabetic group with family history of diabetes and that group without family history were 5.18 and 5.31 respectively and there was no significant difference between the two groups( P >0.05).(5) When the normal glucose tolerance subjects with family history of diabetes progressed to suffer from diabetes, the multiples of the peak level and the base level of insulin secretion declined 43.6% (P < 0.05) more than those in the subjects still with normal glucose tolerance without family history.Conclusion In the early course of diabetes, insulin resistance dose not function significantly, but genetic background make the first-phase secretory function of the p-cell to decline gradually and type 2 diabetes occurs easily.In the absence of genetic background, insulin resistance makes first-phase the secretion of insulin to decline relatively slow.

Objective To evaluate the methods of correction for secondary deformity after removal of polyacrylamide hydrogel in breast.Methods From June 2006 to December 2007,the Center of Breast Plastic and Reconstruction at Chinese Academy of Medical Sciences admitted and treated 36 patients who experienced deformity after polyacrylamide hydrogel remoral in breasts.The average age of the patients was 27.5 years,and the time of consultation for the correction was from 6 months postoperatively.The patients who had preoperative MRI examinations showed that no visible polyacrylamide hydrogel remained in the breast were included in the study.The patients were classified according to the deformity of the breast and the chest wall tissue.Autologous fat injection grafting,silicon gel implant augmentation,and dermis grafting were performed for treating the deformity of the breasts after polyacrylamide hydrogel removal.Results During 3 to 18 months follow-up,the shape of the breast was improved and no complications such as infection,the sclerotic nodules,implant exposure occurred.35(97.2%) patients were satisfied with the result of the operations.Conclusions The correction for secondary deformity of breast after removal of PAHG should be performed at least 6 months after removal of polyacrylamide hydrogel.The optimal and nature contour of the breast may be recovered by combination of various surgical methods which are carefully selected according to the individual situation.

Objective To assess the role of hip ultrasonography in the early screening and following up of developmental dysplasia of the hip (DDH). Methods A total of 1324 hips of 662 infants younger than 6 months underwent ultrasonography with Graf method. The sonographic appearances of bony roof, superior bony rim, cartilaginous roof, as well as α and β angle measurements were classified according to the Graf method. Risk factors such as gender, sides, fetal position, and swaddling used were assessed. Following up were performed with ultrasonography in the cases of immaturity, dysplasia and dislocation that needed to be monitored or treated. Results Detection rate of selective ultrasound in screening of DDH of the hip was 7.42%. Both gender and fetal position was the risk factor of DDH. Twenty-seven infants with dysplasia hip and five with dislocation hip were followed-up with ultrasonography during treatment process. Thirteen infants with dysplasia turned to normal after abduction exercises, while other fourteen received treatment in Pavlik harness for no improvement in ultrasonography. All infants of dislocation received operation eventually because of failing to Pavlik harness. Conclusion Ultrasonography can objectively assess the development of DDH, monitor the course of following-up and treatment of DDH, and serve as a main tool in the early screening and following up of DDH in infants.

Objective To investigate the situation of Pseudomonas aeruginosa strains carrying metallo-β-lactamases and inte-grases in the Second Affiliated Hospital of Harbin Medical University.Methods The phenotype of metallo-β-lactamases were detected by modified Hodge test,double-disc synergy and combination paper method,respectvily.PCR method was used to detecte metallo-β-lactamases genotypes and the integrationⅠ,Ⅱ and Ⅲ.The PCR products of the whole length bla-IMP gene were purified,sequenced and analyzed by Blast.Results Among 62 Pseudomonas aeruginosa strains,metallo-β-lactamases phenotype of 3 by modified hodge test,4 by double-disc synergy test,4 by combination paper method and were all positive 4 of IMP-1 type metallo-β-lactamases of Pseudomonasaeruginosa strains (10%,4/40)were positives by PCR.Inte-grase Ⅰ of 16(40 %,16/40)strains were positives by PCR method in IMP-resistant Pseudomonasaeruginosa,and integraseⅠ of 22.73 %(5/22)were positives in IMP-sensitive Pseudomonasaeruginosa.No other metallo-β-lactamases,integraseⅡandⅢ were detected in this study.Conclusion IMP-type metallo-β-lactamase existed in IMP-resistant Pseudomonasaerugi-nosa isolates of the Second Affiliated Hospital of Harbin Medical University.Most strains carried integraseⅠ,and other re-sistance mechanisms may be associated with multi-drug resistance,so it is important to prevent the Pseudomonasaeruginosa strains which carried metallo-β-lactamases and integrons widely spread in the hospital.

Cardiac pacing site has an important impact on the activation sequence and systolic synchrony of heart , which is an important factor determining clinical effect of cardiac pacing .Along with expanding and use of active fixed electrode in clinic ,especially adjustable bending delivery sheath ,it makes right atrial pacing of non -tradition‐al site possible .But whether changing atrial pacing site can reduce atrial fibrillation load after pacemaker implanta‐tion is still controversial .Now the present article made a simple review about research progress of interatrial septum pacing .

A good funds budget can optimize efficiency of the research funds. Through the implementation of a National Science and Technology Major Project, the authors analysed the budget management proposed some skills and suggestions for the planning and management of budget.

Objective To explore the relationship between the levels of leptin and leptin receptor in placental and intrauterine growth retardation.Methods Eighty seven newborns were studied .Auxological data(birth weight, length and biceps, triceps, subscapular and iliac skinfold thickness) were obtained and recorded.According to birth weight ,the subjects were divided into :the small for gestational age(SGA)group and the appropriate for gestational age (AGA) group.The levels of leptin and leptin receptor mRNA in 87 placental tissue were assayed by reverse transcription-polymerase chain reaction(RT-PCR).Results 1. The level of leptin receptor mRNA in placental was 0.894?0.291, which was positively related to the birth weight and body fat content (r=0.651,0.581,both P