This study aims to explore the differences of event-related potential (ERP) between attention deficit hyperactivity disorder (ADHD) and normal children, so that these differences provide scientific basis for the diagnosis of ADHD. Eight children were identified to be ADHD group by the diagnostic criteria of DSM-IV (diagnostic and statistical manual of mental disorders-IV), and the control group also consisted of 8 normal children. Modified visual-continuous performance test (CPT) was used as the experiment paradigm. The experiment included two major conditions, i. e. Go and NoGo. All the 16 subjects participated in the study. A high density EEG acquisition instrument was used to record the EEG signal and processed these EEG data by means of ERP and spectrum analysis. P2-N2 peak-peak value and spectral peak around 11 Hz were analyzed between ADHD subjects and those in the control group, and then statistical tests were applied to these two groups. Results showed that: (1) Under the condition of Go, ADHD group had a significant lower P2-N2 peak-peak value than the values in the control group (P < 0.05); but under the condition of NoGo there was no significant difference in between. (2) Compared with the control group, the ADHD group had significant lower spectral amplitude around 11 Hz under the condition of NoGo (P < 0.05). However, under the condition of Go the difference was insignificant. In conclusion, there is certain cognitive dysfunction in ADHD children. P2-N2 peak-peak value and spectral peak around 11 Hz could be considered as clinical evaluation indexes of ADHD children's cognitive function. These two objective indexes provide an early diagnosis and effective treatment of ADHD.
Attention Deficit Disorder with Hyperactivity ; diagnosis ; physiopathology ; Brain ; physiopathology ; Case-Control Studies ; Child ; Cognition Disorders ; diagnosis ; physiopathology ; Electroencephalography ; Evoked Potentials ; Humans

The database design of multi-focal visual electric-physiological examining system is introduced in this paper.Microsoft Access 97 is used to design the database.VC++ can append,query or delete records of the database through DAO interface.It reflects such advantages that the database is easy to be managed and convenient to be queried.The design pattern can be transplanted to other medical devices' design.

Objective To investigate the impact of preoperative portal vein thrombosis (PPVT) on living donor liver transplantation (LDLT).Methods In this study,99 patients who underwent LDLT by the same surgical team of Tianjin First Centre Hospital from 2007 to 2011 were retrospectively analyzed.According to whether there was a PPVT,all the patients were divided into PPVT group (26 cases) and non-PPVT group (73 cases).The preoperative risk factors and the impact of PPVT on LDLT and outcomes were analyzed.Results Among 26 PPVT patients there were 23 cases in grade Ⅰ and 3 cases in grade Ⅱ.Splenectomy was found to be an independent risk factor for PPVT (x2 =10.211,P =0.001).PPVT prolonged the anhepatic phase (Z =-2.430,P =0.015),but the incidence of surical complications and mortality were no statistical differences between the PVT group and the non-PVT groups.Meanwhile,there was no statistical difference of 1-and 3-year survival rate between the two groups(x2 =0.505,P =0.477).Conclusions With proper intraoperative treatment and postoperative prevention,PPVT does not affect the outcomes of patients suffering from grade Ⅰ or Ⅱ PPVT.However,PPVT added to difficulties of operation,so the detailed preoperative evaluation and careful intraoperative operation is necessary.

Objective To investigate the relationship between high sensitive C reactive protein(hsCRP) and monocyte chemotactic protein-1 (MCP-1) in patients with metabolic syndrome(MS).Methods Sixty-two patients with MS and 52 normal healthy individuals (NS) were recruited in the study.And the levels of hs-CRP and MCP-1 were detected by ELISA.The severity of Insulin resistance was calculated by homeostasismodel assessment of insulin resistance(HOMA-IR).The monocytes in blood were isolated,cultured and stimulated by different concentrations of CRP.MCP-lexpression of monocytes was measured by real-time PCR.Results Patients with MS displayed significantly higher serum levels of hs-CRP and MCP-1 compared with healthy control group [(80.26 ±35.52) nmol/L vs (3.12 ±2.55) nmol/L for hs-CRP,P ＜0.01 ; (15.35 ± 10.12) nmol/L vs (9.76 ± 6.15) nmol/L for MCP-1,P ＜ 0.05].There was significantly positive correlation between hs-CRP and MCP-1.Serum hs-CRP,MCP-1and insulin resistance index were positively correlated,respectively.In vitro experiments indicated that CRP could up-regulate MCP-1 expression of monocytes in a concentration-dependent way.When the concentration of CRP was 176nmol/L,the expression of MCP-1 could reach 105％ compared with non-stimulated group.Conclusion With the severity of the inflammatory response and enhanced insulin resistance,elevated serum CRP level may result in MCP-1 expression in patients with metabolic syndrome.

Objective To understand the endemic characteristics and regularity of cystic echinococcosis by evaluating and classifying its endemic situation in Non Tibetan Plateau regions,so as to provide the evidence for formulating effective preventive and control measures. Methods The prevalence data of cystic echinococcosis in 174 counties(cities,districts,banners)in Non Tibetan Plateau regions from a national survey were collected and analyzed by the sample cluster method in 2012. Results The 174 counties(cities,districts,banners)could be classified into 4 clusters by spatial distribution. The first cluster with human high prevalence rate,low infection rate of livestock,and positive rate of dog stool antigen included 3 counties. The second cluster with high infection rate of livestock,low prevalence rate of human,and positive rate of dog stool antigen included 20 counties(cit-ies). The third cluster with high positive rate of dog stool antigen,low prevalence rate of human,and low infection rate of livestock included 39 counties(cities,districts,banners). The fourth cluster with low rates of the above 3 indices included the rest 112 counties. Conclusions The results of the cluster analysis conform to the current epidemiological status of cystic echinococcosis in the Non Tibetan Plateau regions. The epidemiological characteristics and geographical distributions of the four area types will pro-vide a basis for the classified management and guidance of cystic echinococcosis control in these areas.

Objective To summarize and explore the clinical characteristics,treatment and outcome of measles in pediatric liver transplant recipients.Method A total of 56 recipients underwent pediatric liver transplantation from June 2013 to April 2014,and 4 recipients suffered from measles post-liver transplantation with the incidence being 7.1％.The data of 4 recipients were retrospectively analyzed.All of the 4 cases were subjected to liver transplantation at our center for biliary atresia and cholestasis liver cirrhosis.All the patients received the combined immunosuppressive regimen on the basis of tacrolimus.All the patients did not accept the immunization with measles vaccine because of the primary liver diseases.All the cases presented the clinical manifestations of cough,high fever (T ＞38.5℃C) and conjunctiva congestion before the rashes came out.Maculopapular rashes appeared about 4 days after the fever.The rashes first appeared from the skine post aurem,face,neck,and then spread to trunk and extremities.Koplik's spots on the buccal mucosa were observed in all the 4 cases.The serological test of IgM antibodies to measles was done.The treatment was adjusted as soon as the diagnosis of measles was clear.Immunosuppressants were decreased or stopped,intravenous immunoglobulin (IVIG) combined with anti-infection drugs was given.Result The clinical manifestation of measles in pediatric liver transplant recipients was serious.There were 3 cases complicated with pneumonia,and one case with laryngitis.Two cases presented severe measles pneumonia and developed into severe respiratory failure requiring mechanical ventilation.Three eases recovered from the therapy and 1 case died of respiratory failure.Conclusion Pediatric liver transplant recipients who suffered from measles are at high risk of severe pneumonia.Measles pneumonitis is frequently fatal in immunocompromised pediatric patients.The treatment shoule be given as soon as possible.

Objective To establish a rat model of cardiac hypertrophy induced by isoproterenol(ISO),and to study its basic characteristics . Methods Cardiac hypertrophy was induced in rats with ISO. The model rats received subcutaneous injections of 5 mg/kg ISO every day for 14 days. Results The heart weight/body weight and left ventricular weight/body weight ratios in model rats were significantly increased. The serum hydroxyproline level was significantly increased ,the superoxide dismutase level was significantly decreased ,and the malondialdehyde level was sig?nificantly increased in model rats. Conclusion The rat model of cardiac hypertrophy is successfully created by subcutaneous injection of ISO for 14 days. This model can be used in study of the mechanism of cardiac hypertrophy.

Objective To explore the effects of different intrauterine adhesion (IUA) classification systems on predicting the IUA prognosis.Methods One hundred cases were selected as the subjects in present study from those diagnosed with IUA and underwent surgery in Zhujiang Hospital of Southern Medical University from Jan.2010 to Jan.2017,and were followed up for two years.According to the actual situation,all patients were scored by March,AFS,ESGE and Chinese classification for comparing the effects of different IUA classification systems on predicting the pregnancy rate,live birth rate and effective rate within 2 years after surgery.Results ESGE classification had a good effect on predicting the postoperative live birth rate and effective rate,and a certain predictive effect on pregnant rate,with the area under curve (AUC) of 0.722,0.754 and 0.635,respectively.March classification had a certain effect on predicting the postoperative live birth rate and effective rate with AUC of 0.635,0.754,respectively,but had a poor effect on predicting pregnant rate.AFS classification and China classification had poor effect on predicting the IUA prognosis.Conclusion ESGE classification system is better than the other systems including March,AFS and Chinese classification,on predicting the IUA prognosis,but further verification in large sample size is still required.

Child ; Humans ; Liver Transplantation ; adverse effects ; Measles ; etiology ; Pneumonia, Viral ; etiology ; Transplant Recipients

ObjectiveTo study the impact of allocation of organ arteries and their reconstruction for donor livers on arterial complications after liver transplantation from organ clusters obtained by combined liver,kidney,pancreas and duodenum harvesting.The aim is to guide future use of donor organs more safely and rationally with a decrease in postoperative complications.MethodWe studied 11 patients.ResultsThere was no hepatic artery anomaly.A Carrol artery patch was obtained at the bifurcation of the proper hepatic artery and the gastroduodenal artery in these donor livers.In one patient,an arterial graft was used because of inadequate arterial length,and arterial thrombosis developed which required re-transplantation.The hepatic arterial reconstruction was successful for the remaining 10 patients.One patient died of pulmonary infection 5 months post transplantation.ConclusionWhen combined liver,kidney,pancreas and duodenum harvesting was used,enough arterial length of the recipient must be preserved.There should be adequate and prompt communication between the teams carrying out the donor operation and the recipient operation.A Carrol arterial patch of the proper hepatic artery and the gastroduodenal artery for the donor liver,and the use of microsurgical vascular anastomosis in the operation are the keys to prevent hepatic arterial complications after liver transplantation.Multi-organ harvesting can be used for obtaining donor livers in liver transplantation.