[Objective]To evaluate the cytocompatibility of chitosan-alginate scaffolds through in vitro cytoxicity experiment,cell-material co-culture experiment and in vivo implantation test.[Method]Chitosan-alginate scaffolds with longitudinal,paralleled multi-channels were produced via freeze-drying. Bone marrow derived stromal cells (BMSCs) were cultivated with the leach liquor. The cytotoxicity of scaffold was analyzed using MTT assay after 1,3 and 5 days of culture.Scanning electron microscopy was conducted after 3,5 and 7 days of BMSCs culture on the chitosan-alginate scaffold in vitro. Immunofluorescence detection was performed after implanting BMSCs and chitosan-alginate scaffolds in vitro in acute hemi-transaction spinal cord injury.[Result]The cytotoxicity of chitosan-alginate scaffold was in grade 0-1. Scanning electron microscopic observation indicated that the cells adhered to and grew on the surface of scaffold,arranging in a directional manner after 3 days of co-culture. NF200 and NSE fluorescence detection proved that a great many BMSCs were survival in the scaffold after 6 weeks,and that some transplanted cells differentiated into neuron-like cells.[Conclusion]Chitosan-alginate scaffold has a satisfactory cytocompatibility and may be an ideal tissue engineering scaffold material.

Objective To investigate the EUS elastographic patterns of normal pancreas and focal pancreatic lesions, and its value for characterizing and differentiating between benign and malignant pancreatic tissues. Methods Between January and June 2009, 6 patients with normal pancreas and 9 patients with focal pancreatic lesions were enrolled. Real-time elastography was carried out during the conventional EUS examination. The elastographic images were scored with 1 to 5 based on the elastographic pattern. Results Nine focal pancreatic lesions were finally diagnosed as pancreatic cancer (n = 4), cyst-adenocarcinoma (n =1), cyst-adenoma (n = 2) and focal pancreatitis (n = 2), respectively. Pancreatic cancers were scored as 3(n = 1) and 4 (n = 3). Cyst-adenocarcinoma was scored as 5 and cyst-adenomas were scored both as 2,while focal pancreatitis were scored as 2 and 3, respectively. Elastographic pattern was scored as 1 (n = 5)and 2 (n = 1) in 6 normal pancreas. When scores 1 and 2 were assigned to benign lesion and 3 to 5 to malignancy, the overall diagnostic accuracy of EUS elastography for focal pancreatic lesions was 88. 9%(8/9). Conclusion There are apparent differences in elastographic patterns between benign and malignant pancreatic tissues. EUS elastography is a promising method that allows characterization and differentiation of benignancy and malignancy.

Objective To investigate the influence of group psychotherapy on clinical effect of apoplectic hemiplegia. Methods Sixty patients of apoplectic hemiplegia were randomized into treatment group and control group, 30 cases in each group. Both groups were given ordinary clinical treatment and rehabilitation training, and treatment group was given group psychotherapy additionally. HAMD-17 and MBI were evaluated after four weeks, and the incidence of depression of the two groups was compared. Results The treatment group was obviously superior to control group in improvement of depression level and activities of daily living (P<0.05). The incidence of depression in the treatment group was lower than that in control group (P<0.05). Conclusion The group psychotherapy is effective in treating depression state of stroke patients, improving activities of daily living, and reducing depression incidence.

Objective To compare the therapeutic effect of aerobic exercise training of different intensity on hypertension. Methods Sixty hypertensive patients were randomly allocated to 2 groups and treated with aerobic exercise training at 20% or 60% of maximal intensity. Not only were the relevanl parameters of exercise capacity measured by the use of treadmill exercise test,but also was ambulatory blood pressure monitored and the quality of life recorded before and after the therapy. Results There was nc significant difference of the decrement in any parameter of ambulatory blood pressure between the two groups ( P>0. 05).There was a significant difference of the increment of general health, vitality, emotion and mentality between the two groups after treatment with group A better than group B(P <0. 05). Conclusions Aerobic exercise training at 20% and 60% of the maximal intensity has similar ambulatory blood pressure, but the quality of life is significantly better after aerobic exercise training at 20% of the maximal intensity.

Objective To determine the feasibility, safety and techniques of transumbilical single-port laparoscopic liver cyst fenestration. Methods From November 2009 to June 2010, four cases of transumbilical single-port laparoscopic liver cyst fenestration were completed through three adjacent 5 mm trocars around the umbilicus. Normal 5 mm laparoscopic instruments and a 5 mm 30° laparoscope were utilized, and the procedures were similar to conventional multi-port laparoscopic liver cyst fenestration. Results All operations were completed successfully, with no conversion to laparotomy or the multi-port laparoscopic procedure. The mean operation time was 38 minutes (25-70 minutes). All patients were discharged at postoperative days 1-3, and no complications or cyst recurrence occurred during hospitalization and follow-up. Conclusions Transumbilical single-port laparoscopic liver cyst fenestration is safe and feasible. It has the advantages of less pain, cosmetic incision and quick recovery, but is technique-demanding.

AIM: To determine the effect of Radix Angelicae Sinensis(RAS) on renal ischemia/reperfusion injury in rabbits and to explore its mechanism. METHODS: Twenty-five rabbits were divided randomly into the sham operated group(Control group), renal ischemia/reperfusion injury group(IR group) and RAS+IR group. At the time point of reperfusion 48 h after renal ischemia 1 h, the renal tissue were observed by electron-microscope and the contents of creatinine(Cr) in serum, tumor necrosis factor-?(TNF-?), interleukin-6(IL-6)and basic fibroblast growth factor(bFGF) in the renal tissue were measured. RESULTS: A remarkably degenerative changes in renal tissue were showed under electronmicroscope in IR group , but the changes in RAS+IR group were slight . The contents of Cr, TNF-? and IL-6 in IR group were higher than those in Control group, these parameters in RAS+IR group were lower than those in IR group, the difference between these groups was significant ( P

Tsutsugamushi disease is an acute infectious disease caused by Rickettsia. Occasionally it has been reported in Macau, China. Critical cases are rare. Because the clinical manifestations of tsutsugamushi disease are non-specific and diverse, if not diagnosed and treated in time, the disease may progress to multiple organ dysfunction syndrome (MODS), severe acute respiratory distress syndrome (ARDS), and even death. A patient with tsutsugamushi disease complicated by MODS was admitted to the intensive care unit (ICU) of Kiang Wu Hospital in Macau, China on September 30, 2021. Combined with the history of outdoor activities (exposure to chigger mite larvae), clinical symptoms and signs (characteristic eschar of tsutsugamushi disease was found on the abdominal skin), related laboratory examinations (Weil-Felix test: negative). Diagnosis of tsutsugamushi disease with MODS. After admission, the patient was treated by anti-infection, correction of coagulation dysfunction, tracheal intubation and mechanical ventilation, noradrenalin to maintain blood pressure, continuous renal replacement therapy (CRRT), but the condition didn't improve significantly. We initiated veno-venous ECMO (VV-ECMO), which was initially setted blood flow to 5 L/min (70 mL·kg -1·min -1), rotate speed to 3 500 rpm, fractional concentration of inspired oxygen (FiO 2) to 1.00. Heparin was used as anticoagulant and activated coagulation time (ACT) was kept between 180 and 200 seconds. Meanwhile the speed of fluid removal in CRRT was adjusted. After 9 hours of ECMO support, the oxygenation improved, the blood flow of ECMO was reduced to about 4 L/min (58 mL·kg -1·min -1), rotate speed to 3 000 rpm. The patient's condition improved after 4 days of ECMO treatment and her ECMO flow rate and FiO 2 could be decreased gradually. On hospital day 5, ECMO was removed. Eight days on mechanical ventilation, the patient was successfully weaned and extubated. On day 11 of hospitalization, weaned the CRRT and turned to intermittent hemodialysis. The patient was transferred out of ICU due to her stable condition on the 12th day hospitalization. After that, her spontaneous urine output increased gradually. The functions of various organs returned to normal. After 36 days of hospitalization, she recovered and was discharged.

Objective To investigate the immediate effect of early acupuncture and drug treatment on cerebral arterial blood flow and the degree of nerve damage in patients with acute ischemic stroke.Methods A total of 100 cases acute ischemic stroke patients treated in Quanzhou First Hospital Affiliated to Fujian Medical University were selected from June 2021 to June 2023,using clinical random number table method,the patients were divided into acupuncture treatment group(35 cases),non acupoint acupuncture group(32 cases),and conventional drug treatment group(33 cases).After admission to the hospital,all stroke patients were treated with conventional western medicine treatment,Both acupuncture treatment group and non acupoint acupuncture group received initial acupuncture treatment on the first day of enrollment without using drugs to improve circulation.Three groups of patients were treated continuously for 14 days,and their cerebral hemodynamic indicators before and after treatment were observed,including systolic peak velocity(Vs),diastolic peak velocity(Vd),pulsatile index(PI),resistance index(RI),and mean blood flow velocity(MFV).The levels of brain nerve injury markers in patients before and after treatment were measured,and the degree of neurological impairment were evaluated using National Institute of Health stroke scale(NIHSS).Results Compared with before treatment,the Vs and MFV levels of patients in conventional drug treatment group and non acupoint acupuncture group increased after treatment(P＜0.05),and PI decreased significantly compared with before treatment(P＜0.05);The levels of Vs,Vd,and MFV in acupuncture treatment group were all increased(P＜0.05);PI and RI decreased compared to before treatment(P＜0.05);After comparing the three treatment groups,the improvement of Vs,Vd,PI,RI,and MFV in acupuncture treatment group were better than those in non acupoint acupuncture group and conventional drug treatment group(P＜0.05).The Vs,Vd,PI,RI,and MFV of patients in the acupuncture treatment group improved after the first acupuncture,and the degree of improvement was better than that of the non acupoint acupuncture group(P＜0.05).After treatment in the three groups,the levels of serum S-100 β protein,heart-type fatty acid binding protein(H-FABP),and neuron specific enolase(NSE)were significantly reduced(P＜0.05),among which the index levels in acupuncture group were lower than those in the other two groups(P＜0.05),and the NIHSS score was lower in acupuncture group after 2 weeks of treatment and 30 days of follow-up compared with non acupoint acupuncture group and conventional drug treatment group(P＜0.05).Conclusion Early acupuncture treatment can improve the blood flow of the middle cerebral artery in patients with acute ischemic stroke and reduce the degree of nerve damage.

Objective To investigate the diagnostic value of biparametric magnetic resonance imaging(bpMRI)radiomics combined with prostate-specific antigen density(PSAD)in predicting low-grade and high-grade prostate carcinoma(PCa).Methods The clinical and imaging data of patients with PCa confirmed by pathology in Taizhou Central Hospital from June 2018 to October 2022 were retrospectively analyzed.According to Gleason grade group(GGG),GGG≤2 was defined as low-grade PCa,and GGG＞2 was defined as high-grade PCa.PCa patients with different grades were randomly divided into training group and test group according to a ratio of 7∶3.Radiomics features were extracted based on T2 weighted imaging(T2WI)and apparent diffusion coefficient(ADC)sequences.Feature selection and dimensionality reduction were carried out using maximum relevance minimum redundancy,least absolute shrinkage and selection operator,and 5-fold cross validation was performed to retain the best radiomics features.Receiver operating characteristic(ROC)curve and Delong's test were used to evaluate the performance of each model.Decision curve analysis(DCA)was used to evaluate the clinical utility of the model.Results Among all the models,T2WI-ADC-PSAD combined model had the best diagnostic efficiency,the area under the curve(AUC)in training group and test group were 0.882,0.772,respectively.Delong's test showed that in training group,there was no significant difference in AUC between T2WI-ADC-PSAD model and T2WI model(P＞0.05),but there were significant differences between T2WI-ADC-PSAD model and other models(P＜0.05).In test group there were no significant differences in AUC between T2WI-ADC-PSAD model and other models(P＞0.05).The DCA showed that the T2WI-ADC-PSAD model provided a higher net benefit for clinical decision-making when the threshold probability was less than 97％.Conclusion BpMRI radiomics combined with PSAD can improve the diagnostic efficiency of low-grade and high-grade PCa,and guide the treatment decision of patients.