In recent years，the repair and regeneration of peripheral nerve injury has developed. This paper reviewed the researches of peripheral nerve injury repairing from the low, medium, and high frequency electric therapy. The electric therapies should be selected with the pathology and regeneration of the injured peripheral nerve. The mechanism need further study.

Objective:To establish an HPLC method for the determination of isomeric impurity in fasudil hydrochloride. Meth-ods:The chromatographic method was carried out on a Kromasil 100-5 Phenyl C18 column with phenyl bonded silica as the filler (250 mm × 4. 6 mm, 5 μm), and phosphate buffer (10 mmol· L-1 ammonium dihydrogen phosphate, adjusting pH to 4. 0 with 1% phos-phoric acid) -acetonitrile (80∶ 20) was used as the mobile phase. The detection wavelength was 275nm and the column temperature was 40℃. The flow rate was 1. 0 ml· min-1 , and the injection volume was 10 μl. Results:Fasudil hydrochloride and its derivative was linear within the range of 0. 148-2. 960 μg·ml-1(r=1. 0000) and 0. 101-2. 014μg·ml-1(r=0. 999 9), respectively. The av-erage recovery of isomer impurity in fasudil hydrochloride was 101. 9% with RSD of 0. 98%(n=9). Conclusion:The method is sim-ple,accurate and reproducible,which can be used for the quality control of fasudil hydrochloride and its isomer.

Objective To observe the neuro-ophthalmological features of intracranial aneurysm.Methods 169 patients with intracranial aneurysm were retrospectively studied.45 patients, including 18 men and 27 women, had neuro ophthalmological symptoms or signs.Their average age was (56.21 ± 16.11) years and 32 (71.11％)patients' age was more than 50 years.The onset time ranged from 30 minutes to 20 years.20 (44.44％) patients' onset time was among 24 hours.CT, CT angiography, MRI, MRI angiography and cerebral digital subtraction angiography were performed alone or combined in all 45 patients.Visual acuity, pupil reflex and eye movement were examined.Clinical data including general condition, initial symptoms, neuro-ophthalmological changes, imaging data and treatment effects were recorded.Results 26.63％ of the 169 patients had neuro-ophthalmological symptoms or signs.There were 6 patients (13.33％) with neuro ophthalmological changes as their first manifestation and 39 patients (86.67 ％) with neurologic changes as first manifestation.Neuro-ophthalmological symptoms included vision loss (10 patients, 22.22％), diplopia (4 patients, 8.89％) and ocular pain (2 patients, 4.44％).The most common neuro-ophthalmological sign was pupil abnormality which was found in 31 patients (68.89 ％).The second most common sign was eye movement disorder (16 patients, 35.56％).The other signs included ptosis (8 patients, 17.78％), nystagmus (2 patients, 4.44％), exophthalmos (1 patient, 2.22％) and disappeared corneal reflection (1 patient, 2.22％).Imaging examination indicated that intracranial hemorrhage happened in 29 patients (64.44％).The most common neuro-ophthalmological features were pupil abnormality, eye movement disorder and vision loss in both patients with or without intracranial hemorrhage.The incidence of pupil abnormality was higher in patients with intracranial hemorrhage than that without intracranial hemorrhage, the difference was statistically significant (x2=7.321, P=0.007).Pupil abnormality and vision loss were common in patients with internal carotid artery aneurysm, and eye movement disorder was common in patients with internal carotid artery aneurysm and posterior communicating aneurysms.Conclusions Patients with intracranial aneurysm have different neuroophthalmological features.The most common features are pupil abnormality, eye movement disorder and vision loss.

Objective To study the reporting status of notifiable infectious diseases in a general hospital,grasp epidemiological characteristics and patterns,and provide scientific basis for the preventive measures of infectious diseases.Methods Epidemic data of notifiable infectious diseases reported by a hospital in 2007 -2011 were ana-lyzed statistically.Results Reporting rate of notifiable infectious diseases was 0.40%(15 386/3 852 327)in 2007-2011 ,and were statistically different among each year (χ2 =94.93,P <0.01),the major age of reported cases were 14-45 years(46.70%),the main transmission routes were blood and sex (60.68%),followed by respiratory tract (33.06%).The reporting rates among different months were statistically different(χ2 =487.60,P <0.01 ),April ranked first for five consecutive years(0.53%),followed by December(0.51 %)and May(0.48%).The main repor-ted infectious diseases included viral hepatitis(42.82%),varicella(20.06%),syphilis(16.96%),rubella(5.41 %), and pulmonary tuberculosis(3.75%).Conclusion Bloodborne diseases,sexually transmitted diseases,and infec-tious respiratory diseases are the stress in the prevention and control of infectious disease,management should be in-tensified.

Objective To assess the value of imaging examination technologies such as 2-D ultrasound(2-DUS),helical computed tomography (CT),contrast-enhanced ultrasonography (CEUS) and contrast-enhanced CT (CECT) in the positioning and qualitative diagnosis of pancreatic diseases.Methods 2-DUS,helical CT findings were comparatively reviewed to analyze in 44 cases(45 lesions) with pancreatic space-occupying lesions verified by operation and pathology,and investigated the enhanced mode and the perfusion features of CEUS and CECT in different phases.Results In 45 lesions,there were 29 malignant lesions and 16 benign lesions.CEUS and CECT had greater diagnostic value compared to 2-DUS and helical CT.The sensitivity,specificity and accuracy of 2-DUS for the malignant lesions were 72.41 ％,62.50％ and 66.67 ％,while the helical CT were 68.97％,75.00 ％ and 68.89 ％.The sensitivity,specificity and accuracy of CEUS for the malignant lesions were 93.10％,87.50％ and 91.11％,while the CECT were 86.21％,93.75％ and 86.67％.There was no statistical difference between CEUS and CECT in detecting pancreatic space-occupying lesions.Conclusions CEUS and CECT can provide more accurate diagnosis on for pancreatic space-occupying lesions than 2-DUS and helical CT.Following CECT,CEUS is a new technology for diagnosis on pancreatic space-occupying lesions.

With the rapid development of new media,medical students' ideological and moral qualities,physical and mental health have been unprecedentedly affected.Traditional ideological and political education modes for medical students encounter great challenges.In order to strengthen the ideological and political education for medical students,we need to focus on three aspects,namely enhancing information qualities of the subjects of ideological and political education,enhancing the supervision of public opinion and guidance on new media and building new interactive environment.

ObjectiveTo compare the clinical value of contrast-enhanced ultrasonography (CEUS) and conventional ultrasonography in diagnosing polypoid lesion of gallbladder (PLG).MethodsThe postoperative pathology and clinical manifestation of 49 PLG patients were retrospectively analyzed in the First Afifliated Hospital of Harbin Medical University. Of them, 7 cases were maligant lesions, 4 cases were adenomas, 24 cases were polyps of gallbladder and 14 cases were adenomyomatosis of gallbladder. With postoperative pathology as golden standard, the sensitivity, speciifcity and PLG speciifcity were calculatedfor conventional ultrasonography, CEUS and conventional ultrasonography plus CEUS.ResultsThe sensitivity, specificity and PLG specificity were 33.3%, 74.3% and 68.3% for conventional ultrasonography, and 66.7%, 85.7% and 82.9% for CEUS respectively. The conventional ultrasonography plus CEUS were 83.3%, 88.6% and 87.8%.ConclusionCEUS could signiifcantly improve the diagnostic accuracy.

Objective To investigate the effect of ultrashort wave therapy on motor conduction velocity (MCV) and expression of vascular endothelial growth factor (VEGF) in rats with sciatic nerve injury.MethodsThe models of peripheral nerve injury were established by forceps clip of sciatic nerve and then a total of 60 SD rats were divided randomly into three groups, including experimental group (n=24), control group (n=24) and sham operation group(n=12). The rats of experimental group were treated by ultrashort wave therapy after operation. The injured sciatic nerve and spinal cord in waist were sampled at the 1st，2nd，4th，6th week respectively after operation and were observed by electrophysiology and immunohistochemistry.ResultsAfter operation，the MCV of sciatic nerve in both experimental group rats and control group rats is zero in 1st week. Since 2nd week，the MCV of sciatic nerve in rats of both two groups began to arise and the MCV of injuried sciatic nerve in rats of experimental group was higher than that in the control group (P<0.05). In injured spinal cord motoneuron，the Integrated Optical Density(IOD) of VEGF in experimental group was higher than that in the control group (P<0.05).ConclusionUltrashort wave therapy could increase the value of MCV of sciatic nerve and the expression of VEGF in spinal cord in rats,and so it could protect the injured peripheral nerve.

Objective To provide the evidence for the clinical prevention and early treatment for the complication by testing microcirculation of the middle fingertip in renal failure patients with hemodialysis.Methods High-frequency ultrasounds combined with E-flow technique were applied to detect the Doppler velocitg index of middle fingertip's nail bed arteriole and ventral arteriole in 35 renal failure patients with hemodialysis.Peak systolic velocity(PSV),end-diastolic velocity(EDV)and vascular resistance index(RI)were separately measured,and comparison were made with healthy adults and renal failure patients without hemodialysis(sex and age matched).Results Compared with normal control,PSV and EDV of middle fingertip's nail bed arteriole and ventral arteriole were degraded statistically(P＜0.05),while RI was increased statistically(P＜0.05)in renal failure patients with and without hemodialysis.Compared with renal failure patients without hemodialysis,PSV and EDV were degraded(P＜0.05)and RI was increased(P＜0.05)in renal failure patients with hemodialysis.Conclusions High-frequency ultrasound combined with E-flow imaging technique can evaluate the microvascular peripheral resistance in renal failure patients with hemodialysis.

Objective To investigate epidermal growth factor receptor(EGFR)expression and tumor residual to the prognostic value in patients with nasopharyngeal cancer(NPC).Methods 200 patients with NPC were examined for EGFR expression by immunohistochemistry analysis,neck cancer and nasopharyngeal residual.Results In 200 cases with NPC,expression of EGFR of positive and negative were 160 cases(80.0%) and 40 cases (20.0%);the rate of overall survival(OS),disease-free survival (DFS),loeoregional relapse-free survival (LRFS) and distant metastasis-free survival(DMFS)in patients with positive EGFR were 72.3%,63.6%,72.2%,63.8% and negative EGFR were 90.0%,90.0%,90.0%,90.0%,respectively in 3-year(X2=3.95,X2=4.12,X2=3.98,X2=4.15,P＜0.05),the rate of local recurrence,distant metastasis rate in residual were 26.6%,32.5% which is significantly higher than 8.1%,18.1% in without residual(X2=4.75,X2=4.94,P＜0.05);the hish expression of EGFR with DFS,OS were significantly correlated(r=6.457,P＜0.05).Conclusion The overexpress of EGFR had the tendency of poor prognosis.tumor residual after radiotherpy can be a prognostic indicator for patients with NPC.