Objective:To investigate the feasibility and efficacy of focused ultrasound surgical clamp(FUSC)for partial hepatectomy,and find out the enhancement effect of SonoVue to FUSC.Methods:Twelve healthy goats were randomly divided into a FUSC group(n=6)in which FUSC was only used for the liver ablation,and a SonoVue + FUSC group(n=6)in which FUSC was performed immediately after iv injection of ultrasound contrast agent SonoVue.A FUSC was comprised of two ultrasound transducers fixed on a forceps-like handle.The directions of focused ultrasound beams produced by both transducers were opposite,with the same central axes.Ultrasound energy was continuously delivered by two transducers to ablate liver tissue located between both transducers.The frequency was 1.6 MHz,and the acoustic power was 150 W.All goats in both groups underwent laparotomy,and then the liver was totally exposed for an ablative procedure.Blood loss,FUSC exposure time,operation time required for the hepatectomy and the cross-section area of the resected liver were recorded.Histological changes were observed in the removed liver,and 10ml blood samples were collected in each goat to measure blood cells and hepatic functions after surgical procedure.All goats were followed up for complications and survival.Results:After surgical procedure,all animals survived well,and no complications were observed during follow-up period.Mean blood loss and mean exposure time were(16.9?4.2)ml and(174?9)s in the FUSC group,and(16.3?3.5)ml and(122?9)s in the SonoVue+FUSC group respectively.A statistical difference of average FUSC exposure time per unit area(P0.05)in both groups.Pathological examination showed coagulation necrosis of the targeted liver tissue,and small blood vessels were severely destroyed,with the occlusion of the ablated vessels.There was a transient increase of serum ALT,AST,TB and DB levels postoperatively in all goats,and they reduced to a normal level 7 days after surgical procedure.Conclusion:FUSC is feasible and effective for partial hepatectomy,which has advantage of convenience,less time and blood loss.FUSC combined with microbubble contrast agen(tSonoVue)can enhance the biological effects of FUSC and improve the efficiency of FUSC.

AIM To investigate the effects of levo phenoprolamine hydrochloride [ levo 1 (2,6 dimethylphenoxy) 2 (3,4 dimethoxyphenyl ethylamino) propane hydrochloride] [ l DDPH([?]D 25 1 08)]on experimental arrhythmias. on experimental arrhythmias. METHODS Intravenous administration of ouabain, aconitine or CaCl 2 induced arrhythmias in rats or guinea pigs; Microelectrode recording was used to record action potential; Whole cell patch clamp technique was used to record L type calcium current ( I Ca,L ). RESULTS ① l DDPH 50 mg?kg -1 inhibited the ventricular arrhythmias induced by intravenous injection of ouabain in guinea pigs or aconitine and CaCl 2 in rats. ② l DDPH 30 ?mol?L -1 shortened 50% action potential duration (APD 50 ) and prolonged effective refractory period (ERP) ( n =6, P

Objective To investigate the feasibility and superiority of combined spinal epidural anesthesia incesarean section.Methods 100 lying-in women who experienced cesarean section were collected and divided into combined spinal epidural anesthesia group(CSEA,n=50)and continuous epidural anesthesia group(CEA,n=50).The change of heart rate(HR),blood pressure(BP)and saturation of peripheral oxygen(SpO2),HR and BP of lyingin womeu in pre-anesthesia,5min,15min post-anesthesia and the time of taking effect,time between beginning of anesthesia and laboar of newborn were observed.The side effects of surgical anesthesia and Apgar score of newborn were compared between the two groups.Results There were no difference in clinical data,change of HR,BP and spO2 between two groups.The anaesthetic time of taking effect and the time between beginning of anesthesia and labour of newborn in group CSEA were shorter than in group CEA(all P＜0.05).Conclusion The combined CSEA and CEA was safe and efficient in cesarean section,and CSEA had greater efficacy than CEA in cesarean section.

Parkinson's disease (PD) is a commonly encountered central neurodegenerative disease in elderly people. According to theories of traditional Chinese medicine (TCM), PD is characterized by deficiency in the root and excess in the branch. Deficiency was referred to qi-blood deficiency of the liver and kidney. Excess was referred as the wind, fire, phlegm and stasis. Deficiency was the root and excess was the branch. Good efficacies have been obtained by treatment based on syndrome differentiation, treatment with specific prescriptions, acupuncture and moxibustion and comprehensive treatment. Some experiments had been conducted to elucidate its mechanisms. However, no uni-fied standard for therapeutic evaluation, poor control of medicinal quality, inferior quality of designed clinical trials, and unclear treatment mechanism in the clinical study on therapeutic effect of PD treatment with TCM require fur-ther studied.

Objective To discuss the feasibility of stereotactic radiotherapy plan designing based on MRI. Methods Based on the study of the serious geometric distortion of MRI while MRI was used in the condition of position by the experiment, how to deal with geometric distortion of MRI for patient positioning by the means of software was studied deeply. The basic thought of correction arithmetic for patient positioning images, of which the corrected data being used to correct patient images was created by primitive sparse corrected data calculated from design data and sampling data was brought forward. Supported by arithmetic research, the MRIC software system was designed and implemented. At last, the experiment model MRI was dealt with the MRIC system. Results The correction arithmetic was proved valid by the result of the experiment model MRI can be corrected back to normal state with MRIC system, which implemented the correction arithmetic. Conclusion It's possible that MRI would be used for positioning and plan designing in SRT.

To discuss the availability of evaluation on the dissolution studies of the multicomponents in traditional Chinese medicine, the in vitro dissolution of total composition of the tablet of rhizomes of Ligusticum chuanxiong components and its correlation with the in vivo were studied by the method of area under the absorbance-wavelength curve (AUAWC). Taken the tablet of rhizomes of Ligusticum chuanxiong components which is composed of sodium ferulate and ligustrazine hydrochloride as subject model, the dissolution tests were carried out with basket method. The plasma concentrations of tablets in different rats were determined by AUAWC at different interval times. The in vivo absorption percentage was calculated by Wagner-Nelson equation to evaluate the in vitro and in vivo correlation. According to the results, the cumulative dissolution in vitro of total composition of tablets of rhizomes of Ligusticum chuanxiong components at 60 min was 90.65% in water by AUAWC. The in vivo pharmacokinetics is fitted with an one-compartment model. The linear equation based on the cumulative dissolution rate (fr) and absorption percentage (fa) at 5, 10, 20, 30 and 60 min was fa = 0.819 7 fr+0.183 and the correlation coefficient was 0.959 5, which showed a good correlation between the in vitro dissolution and the in vivo absorption percentage. The method of AUAWC can be used accurately, feasibly and conveniently to evaluate the in vitro and in vivo correlation of total composition of tablets of rhizomes of Ligusticum chuanxiong components, which will provide better guidance to study the in vitro and in vivo correlation of sustained release preparation etc under complex system of traditional Chinese medicine in the future.

Objective To observe the changes of pulmonary oxidative stress after cigarette smoking exposure,its re-lationship with inflammatory cytokines,and the effects of smoking cessation. Methods Fifty male BALB / c mice were randomly divided into the smoke exposure group,smoke cessation group,and the controls. Mice in smoke cessation group were exposed to cigarette smoking for 16 weeks. On 4,8,and 12 week after smoking cessation mice were executed and the bronchoalveolar lavage fluid(BALF)and lung tissue were collected. The morphologi-cal alternations of lung tissue were observed. Mean length of interval and mean alveolar number were measured. Total cell numbers in BALF were counted. Superoxide dismutase(SOD)activity was measured with hydroxylamine method,malondialdehyde(MDA)level was measured with TBA method. The levels of pulmonary interleukin-8 (IL-8)and tumor necrosis factor-α(TNF-α)in BALF and lung tissue homogenate were measured with ELISA. Re-sults Compared with the mice in the controls,emphysematous changes were remarkable in the lung of cigarette ex-posed mice,the total cell numbers in BALF were increased significantly(P < 0. 05)and reduced gradually after smoking cessation(P < 0. 05). SOD and MDA levels increased remarkably in the cigarette exposure group(P <0. 05),and declined gradually after smoking cessation. The levels of IL-8 and TNF-α in BALF and lung tissue ho-mogenate in the smoke exposure group increased significantly( P < 0. 05),and lowered time-dependently after smoking cessation,but not reached to normal level even 12 weeks after smoking cessation. SOD and MDA levels were positively correlated with the cytokine changes. Conclusion Abnormal oxidative stress in the airways caused by cigarette smoking exposure was merely partially reversed after smoking cessation. And the inflammation remains persistent concomitantly.

Objective:To investigate the application value of multi-slice spiral CT angiography in the clinical diagnosis of aortic dissection.Methods:The clinical data of 78 patients with aortic dissection diagnosed by digital subtraction angiography and treated between January 2015 and December 2019 in Putuo District People's Hospital of Zhoushan and Zhoushan Hospital were retrospectively analyzed. All patients underwent multi-slice spiral CT angiography and digital subtraction angiography. The type of aortic dissection, the number of aortic lacunas, the distance between the lacuna and the left subclavian artery, the involved branches, the percentage of artery wall calcification, and arterial dissection thrombosis determined by multi-slice spiral CT angiography and digital subtraction angiography were compared.Results:All 78 patients were diagnosed with aortic dissection by digital subtraction angiography, and 75 (96.2%) were diagnosed with aortic dissection by multi-slice spiral CT angiography. The same type of aortic dissection was detected by multi-slice spiral CT angiography and digital subtraction angiography, but three patients were misdiagnosed with pericarditis by multi-slice spiral CT angiography. There were no significant differences in the number of aortic lacunas and the distance between the lacuna and the left subclavian artery between the two methods ( t = 1.02, 0.57, both P > 0.05). The involved branches [61.3% (46/78),] the percentage of artery wall calcification [26.7% (20/78)], and the percentage of arterial dissection thrombosis [78.7% (59/78)] determined by multi-slice spiral CT angiography were significantly higher than 43.6% (34/75), 12.8% (10/75), and 62.8% (49/75) respectively determined by digital subtraction angiography ( χ2 = 4.83, 4.65, 4.62, all P < 0.05). Conclusion:Multi-slice spiral CT angiography exhibits a similar capacity to identify aortic dissection to digital subtraction angiography. It can accurately determine the number and location of aortic lacunas, display the calcification and thrombosis of vascular wall, and is minimally invasive and simply operated. Therefore, multi-slice spiral CT angiography is of high application value in the clinical diagnosis and preoperative evaluation of aortic dissection.

Objective Evaluating the effect of Shugan-Jieyu capsule combined with pramipexole on depressive symptoms in parkinson's disease(PD) patients.MethodsAccording to the criteria of including and excluding, we collected 63 PD depression cases who visited doctors at neurological outpatient room between June 2014 and April 2016.35 cases only treated with pramipexole, designed as pramipexole group, and 28 cases treated with pramipexole and Shugan-Jieyu capsule, designed as combined treatment group.The Hamilton depression scale(HAMD), activities of daily living scale(ADL) and unified Parkinson's disease rating scale-part III(UPDRS-III) were assessed at baseling, week 6 and week 9.ResultsAt week 9, HAMD was (17.71±6.78) in pramipexole group versus (14.32±4.81) in combined treatment group, there was significant difference between the two groups(P=0.029), As for HAMDΔ9, analysis did show a significant difference(pramipexole group (-11.06±3.27) vs combined group (-14.93±6.24);P=0.002).Analysis showed a significant difference as for ADLΔ6(pramipexole group (-2.37±1.31) vs combined group (-3.57±2.04);P=0.006) at week 6.There was no significant difference between groups for the reduction in total UPDRS-III scale.No serious adverse event was recorded during treatment of depression.ConclusionShugan-Jieyu capsule combined with pramipexole did have significant effects versus pramipexole on depressive symptoms in PD patients.

Objective To develop LabVIEW-based digital PCG analyzer. Methods A kind of Digital PCG analyzer based on LabVIEW was designed. It included a heart sound sensor, an analog filtering circuit and amplifying circuit, an AD converter, a digital data transferring model and a software for PCG analyzing. Meanwhile, a kind of 3-lead ECG sampling circuit and a display model in LabVIEW were designed as a reference signal for PCG. distinction. Results This digital PCG analyzer had the functions of heart sound sampling from body surface, PCG real-time displaying on the software, spectrum analyzing for the PCG data and PCG database managing. Conclusion This kind of digital PCG analyzer based on LabVIEW can be used for assistant diagnosis of cardiac Arrhythmia and cardiac abnormal noise, and as a teaching tool for clinical auscultation.