Objective To explore the susceptibility differences of ventricular arrhythmia (VA ) in SHR rats with/without left ventricular hypertrophy(LVH) and the significance .Methods The experiments were performed on isolated hearts of 8‐week(the non‐LVH control group ,n=12) ,16 week‐old SHR(the LVH group ,n=12) and age‐matched Wistar Kyoto rats(Wistar ,the blank control group ,n=12) ,which were perfused in Langendorff mode with oxygenated Krebs‐Henseleit solution followed by a K+‐defi‐cient solution .The epicardial electrocardiogram was continuously monitored during all experiments .HE staining and collagen vol‐ume fraction(CVF)was used to evaluate the condition of LVH .Results Compared with the non‐LVH control group and the blank control group ,the low K+ induced ventricular arrhythmia occurred earlier with increased incidences and duration in the hearts of the LVH Group ,the incidences of ventricular tachycardia(VT) ,transient ventricular fibrillation(TVF) ,sustained ventricular fibrillation (SVF) and CVF were higher in the hearts of the LVH Group(P<0 .05) ,myocardial cell hypertrophy and myocardial cells intersti‐tial increased .Conclusion The ventricular arrhythmia occurred earlier with increased incidences and duration in the LVH tissue of SHR rats ,which implies that LVH is associated with VA .

Objective To solve the conflict between data security and sharing in hospital so that patients can get their clinical data through result query service system.Methods Advanced secure data-exchange technology was used to realize network isolation.Integrated result query service system adopted the embedded system as hardware and the embedded LINUX operation system as software.Results Through LAN query module,internet query module and the secure data-exchange module,the design of HIS multimedia query system was realized.Conclusion Via the application of HIS integrated query platform,the design of the hospital secure data exchange is proved to be feasible,reliable and practical.

Objective To investigate the molecular mechanisms for the development of cardiac hypertrophy in hypertension by scanning the expression profile of microRNA (miRNA) in the left ventricular hypertrophic tissue in spontaneously hypertensive rats(SHR)using miRNA microarray chip technique.Methods 17-week-old male SHR with left ventricle hypertrophy (LVH) (n=10) and 8-week-old male SHR without LVH were employed in this study (n=10).Left ventricular mass index (LVMI),HE staining and measurement of transverse diameter of myocardium (TDM) were used to evaluate LVH.The mRNAs of the two groups were extracted from left ventricle tissue and the differential expression of miRNA was detected by using miRNA microarray chip.Results LVMI and TDM were greater in rats with LVH vs without [LVMI(2.87?0.15)vs(2.17?0.14)mg/g;TDM(15.32?0.61)vs(12.01?0.43)?m,P

[Objective]To investigate the characteristics,treatment and prognosis of tibial plateau fracture of Schatzker type Ⅴ and Ⅵ and recommend the option of the surgical treatment.[Method]From May 2002 to March 2006,arthroscopically assisted double-plating fixation,locking plate with cannulated screws and external fixation with limited internal fixation were performed in 35 patients with tibial plateau fracture of Schatzker Ⅴ and Ⅵ.[Result]All patients were followed up from 12 to 35 months with an average time of 16.5 months.Bone union was achieved in all cases.According to Rasmussen's functional grading system,the excellent,good,fair and poor cases were 19,10,4 and 2,respectively.[Conclusion]CT 3D reconstruction,evaluation of soft tissues injury,suitable operation timing and approaches,anatomical reduction,bone transplantation,proper fixation and right rehabilitation training are all key factors to improve the therapeutic effects on tibial plateau fracture of Schatzker Ⅴ and Ⅵ.

To evaluate the influence of phacoemulsification on corneal endothelium of senile cataract with lupus nephritis (LN).
●METHODS:This clinical trial involved 40 cataract patients with lupus nephritis (40 eyes), and 50 cases (50 eyes) without lupus nephritis. All of them underwent phacoemulsification+lOL implantation. The parameters of corneal endothelial cell including central corneal endothelium cell density ( CED ), average area of endothelial cell ( AVE) and coefficient of variation ( CV) were recorded by corneal endothelial microscope pre -operation and at one month after operation. The data were analyzed by SPSS 13. 0 statistical software.
● RESULTS: Both LN group and control group, the morphology of coneal endothelial was statistical significant differences between pre - operation and 1mo postoperation. The CED was lower, AVE and CV were higher ( P < 0. 05, respectively). A significant decrease in CED was seen in the LN group than did in the control group (P < 0. 05). Compared to control group,the post -operative AVE and CV in LN group was significantly increased (P<0. 05).
● CONCLUSlON: The corneal endothelial cell in lupus nephritis patients is more fragile. Safe and reliable operation should be selected for these patients.

BACKGROUND:Relative to blood samples, mouth swab samples are more beneficial for apolipoprotein E gene polymorphism analysis among large cohorts. However, agreement has not yet been reached about how to extract genomic DNA form mouth swab samples.
OBJECTIVE:To develop an appropriate method to extract genomic DNA form mouth swab samples, which are suitable for apolipoprotein E gene polymorphism analysis.
METHODS:Fifty mouth swab samples from patients with sporadic Alzheimer’s disease were col ected. Magnetic nanoparticles and PicoDNA trace nucleic acid extraction kit were used to extract genomic DNA form mouth swab samples. And the purity and concentration of the genomic DNA extracted by the two methods were analyzed. Then PCR amplifications and DNA electrophoresis were performed to confirm whether the genomic DNA was able to amplify desired DNA fragments. DNA sequencing was applied to analyze apolipoprotein E gene polymorphisms.
RESULTS AND CONCLUSION:Genomic DNA extracted by the two methods was of high purity. The concentration of genomic DNA extracted by magnetic nanoparticles was higher than by PicoDNA trace nucleic acid extraction kit, and the difference had statistical significance (P<0.05). Al the genomic DNA were able to performed PCR amplifications to obtain desired PCR products, but results of DNA electrophoresis showed that DNA fragments were more clear by nanoparticles method. The results of DNA sequencing were the same by the two methods. The distribution ofε2,ε3,ε4 genotypes of apolipoprotein E gene was 6%, 71%, 23%, respectively. Magnetic nanoparticles were better than PicoDNA trace nucleic acid extraction kit for extracting genomic DNA form mouth swab samples for apolipoprotein E gene polymorphism analysis.

Adolescent ; Adult ; Female ; Health Status ; Humans ; Male ; Medical Staff ; Middle Aged ; Occupational Health ; Risk Factors ; Sampling Studies ; Surveys and Questionnaires ; Young Adult

Objective To evaluate plasma natriuretic peptide brain (BNP) levels in elderly male patients with type 2 diabetes and primary osteoporosis.Methods A total of 122 elderly male patients with type 2 diabetes were divided into 3 groups according to bone mineral density(BMD):normal group (41 cases),osteopenia group (40 cases) and osteoporosis group (41 cases),and another 33 age matched healthy subjects as control group.Plasma BNP levels were determined by ELISA.Results Plasma BNP levels in osteoporosis group [(1.95 ± 0.49) pmol/L] and osteopenia group [(1.64±0.48) pmol/L] were significantly elevated compared with that in normal group [(1.32±0.38) pmol/L] and control group [(1.26±0.39) pmol/L] (all P＜0.01).There was a statistical difference between osteoporosis group and osteopenia group (t=3.539,P＜0.05),and also between normal group and control group (t=2.726,P＜0.05).Plasma BNP levels had negative correlation with BMD of 2na-4th lumbar vertebra (r=-0.366) and femoral neck (r=-0.375),body mass index (r=-0.288) and estrodiol (E2) (r=-0.352) (all P＜0.05); while had a positive correlation with parathyroid hormone (PTH) (r=0.353,P＜0.05).Conclusions With BMD declining,plasma BNP levels are elevated in elderly male type 2 diabetes,which may be related to the compensatory increase in PTH and the decrease in estradiol.

Objective To evaluate the ability of contrast-enhanced ultrasonography (CEUS ) compared to enhanced MRI scan in differential diagnosis of benign and malign tumor of orbit.Methods CEUS and enhanced MRI was performed in 74 patients with tumor of orbit.These patients were divided into two groups:benign and malignant tumor depended on histological diagnosis.The results were analysed with SonoLiver software.The coincidence rate of diagnosis and enhancement intensity among CEUS,MRI and CEUS+ MRI were compared and the quantitative parameters of CEUS were analysed.Results (1 )The diagnostic accordance rate of benign group by three methods were 90.0%,80.0% and 96.0% respectively, there was statistical difference for diagnostic coincidence rate between the MRI and CEUS+ MRI(P <0.05).The diagnostic accordance rate of malignant group by the above three methods were 75.0%,79.2%and 95.8% respectively,there was no statistical difference for diagnostic coincidence rate between the three methods(all P > 0.05 ).(2 )The enhancement intensity of CEUS was different between benign and malignant groups (P <0.05).There was no statistical difference between benign and malignant groups by MRI method (P >0.05).(3)The parameters of tumor imaging obtained time intensity curve(TIC):rise time (RT),half elution time and time to peaking (TTP)were significantly different between benign and malignant groups(P <0.05).While there was no significant difference of parameters as mean transit time (mTT)and arrived time (AT)(P >0.05).Conclusions CEUS had higher diagnostic accuracy than MRI in benign orbital tumor.The contrast enhancement intensity and time-intensity curves provide valuable diagnostic information for differential diagnosis of benign and malignant orbital tumor.

Objective To investigate effect of mild hypothermia on changes of somatosensory evoked potential (SEP) and synaptophysin mRNA level after traumatic brain injury (TBI) and determine hypothermia-induced neuroprotection.Methods Forty-five SD rats were allocated into mild hypothermia group,TBI group and sham operation group with 15 rats per group according to the random number table.Left-side fluid percussion impact was performed to induce models of TBI.Rats were exposed to hypothermia environment (32-35℃) for 6 hours in mild hypothermia group after TBI.Rats in sham operation group were treated by only drilling on left side of the head,rather than hitting.To evaluate function outcome,modified neurological severity score (mNSS),SEP and synaptophysin mRNA level were measured at 6 hours,24 hours and 7 days postinjury.Results The mNSS in mild hypothermia group lowered compared with TBI group,especially at 24 hours and 7 days (P ＜ 0.05).SEP in mild hypothermia group was significantly shortened at 6 and 24 hours compared with TBI group (P ＜ 0.05),but SEP revealed no significant difference among the 3 groups at 7 days (P ＞ 0.05).Level of synaptophysin mRNA in mild hypothermia group increased at 6 hours postinjury compared with TBI group [(0.08 ± 0.02) vs (0.12 ±0.04)],with further increase at 7 days postinjury[(0.06 ± 0.01) vs (0.33 ± 0.10)] (P ＜0.05).Conclusion The shortage of nerve conduction time of the injured side and promotion of nerve regeneration suggest the neuroprotective role of mild hypothermia following TBI.