Objective:Chinese Herbal Compound I were determined by screening of Radix Scutellariae,Cortex Fraxini,Radix Pulsatillae and Radix Sophorae Flavescentis.The optimal dose of Trimethoprim which combined with it against bacteria in vitro were determined.Method:The composing prescriptions were designed by L9(34) orthogonal test.The antibacterial effect of Staphylococcus aureus,Escherichia Coli and Salmonella in vitro were evaluated by double dilution method.The number of Staphylococcus aureus,Escherichia Coli and Salmonella which had been inhabited by Chinese Herbal Compound I combined with Trimethoprim for 1,2,4h and 8h,were enumerated by Plate Counts Methods.Then the killing rate of Chinese Herbal Compound I combined with Trimethoprim were calculated.The experimental data were fitted by least squares method and the optimal dose of Trimethoprim were determined.Result:The Composition of Chinese Herbal Compound I were mixed in the proportion of 1 to 4 to 1 to 2 with Radix Scutellariae,Cortex Fraxini,Radix Pulsatillae and Radix Sophorae Flavescentis.The optimal dose of Trimethoprim was 2mg/g.Conclusion:Antibacterial action and synergistic action of Chinese Herbal Compound I were significant.

Numerical simulation is one of the most significant methods to predict the temperature distribution in high-intensity focused ultrasound (HIFU) therapy. In this study, the adopted numerical simulation was used based on a transcranial ultrasound therapy model taking a human skull as a reference. The approximation of the Westervelt formula and the Pennes bio-heat conduction equation were applied to the simulation of the transcranial temperature distribution. According to the temperature distribution and the Time Reversal theory, the position of the treatable focal region was corrected and the hot spot existing in the skull was eliminated. Furthermore, the influence of the exposure time, input power and the distance between transducer and skull on the temperature distribution was analyzed. The results showed that the position of the focal region could be corrected and the hot spot was eliminated using the Time Reversal theory without affecting the focus. The focal region above 60 degrees C could be formed at the superficial tis sue located from the skull of 20 mm using the hot spot elimination method and the volume of the focal region increases with the exposure time and the input power in a nonlinear form. When the same volume of the focal region was obtained, the more power was inputted, the less the exposure time was needed. Moreover, the volume of the focal region was influenced by the distance between the transducer and the skull.
Computer Simulation ; High-Intensity Focused Ultrasound Ablation ; Hot Temperature ; Humans ; Neoplasms ; therapy ; Skull

Objective To explore how neutrophil-lymphocyte ratio (NLR) is related with inflammation and atherosclerosis,and the role of NLR in hospitalization in maintenance hemodialysis (MHD) patients.Methods MHD patients treated in hemodialysis center of Sichuan Provincial People's Hospital from June till November 2013 were enrolled.Patients with severe infection,cardiovascular events and malignant carcinoma were excluded.NLR was determined from complete blood count differential.Clinical parameters such as serum albumin,lipids,intact parathormone,ferritin,C-reactive protein (CRP),25-(OH) vitamin D,interleukin-6 (IL-6) and alkaline phosphatase (ALP) were collected.Pulse wave velocity (PWV) and ankle-brachial index (ABI) were used to evaluate the arterial stiffness.Spearman analysis was used to evaluate the relationship between NLR and these parameters.All patients were divided into low NLR group (NLR≤3.25) and high NLR group (NLR ＞3.25) on the median NLR,and their differences in these indexes were analyzed.During the one-year follow-up,the reasons and rates of hospitalization and survival were analyzed.Results One hundred and thirteen MHD patients including 58 males and 55 females were enrolled with (69±49) dialysis age and (54± 15) average age.(1) The NLR was significantly correlated with whole blood count (WBC,r=0.538,P＜ 0.001),ABIL (r=0.201,P=0.033),ABIR (r=0.235,P=0.012) and total cholesterol (TC,r=-0.414,P＜ 0.001) and low-density lipoprotein cholesterol (LDL-C,r=-0.378,P ＜ 0.001).(2) Low NLR patients had increased TC,LDL-C and IL-6 as compare with high NLR patients,however decreased ABIL and ABIR (all P ＜ 0.05).(3) Forty one patients were hospitalized 63 times during the follow-up period.Annual hospitalization rate was 558/1000 and the mortality rate was 17.7/1000.(4)NLR in patients at least hospitalized once a year was significantly lower than in patients without hospitalization,while ALP was higher (all P ＜ 0.05).Compared with those in other patients,NLR and hemoglobin (Hb) were significantly lower in patients with hospitalization due to infection,while ALP was higher (all P ＜ 0.05).Conclusions NLR is related with WBC,ABI,TC and LDL-C in MHDpatients.Lower NLR may indicate high risk for cardiovascular,atherosclerosis and hospitalization,probably different form non-MHD patients,which needs more studies to verify.

Objective To explore the role of liver X receptor (LXR) agonist T0901317 on thrombomodulin (TM) expression in human glomerular endothelial cells and the possible mechanisms.Methods Different concentrations of T0901317 were used to stimulate human glomerular endothelial cells for different time,then LXRα,LXRβ expression were detected by using Western blotting analysis;the roles of T0901317 on TM mRNA and TM protein expression were observed by using real-time PCR,Western blotting and immunofluorescence assay.LXRα,LXRβ gene interference segment Si-hLXRα,Si -hLXRβ were transfected into human glomerular endothelial cells with the concentration of 100 nmol/L respectively,then the roles of Si-hLXRα,Si-hLXRβ on the TM protein and TM mRNA expression were assayed by Western blotting and real time PCR.Results Human glomerular endothelial cells expressed LXRα and LXRβ.Compared to the normal cells and DMSO group,T0901317 could significantly promote TM expression in human glomerular endothelial cells (P ＜ 0.05) and showed a time -and dose-dependent manner.TM expression in Si-hLXRα transfected group was significantly lower than that in the control group (P ＜ 0.05),while TM expression in Si-hLXRβ transfected group had no significant difference compared to the control group.Conclusions Human glomerular endothelial cells express LXRα and LXRβ.LXR agonist T0901317 promotes TM expression in human glomerular endothelial cells,which may be mainly through activating LXRa.

Objective To observe the influence of renal sympathetic denervation (RSD) on renal interstitial fibrosis and transforming growth factor beta 1(TGF-β1) and microRNA-21 (miR-21) in rats with unilateral ureteral obstruction(UUO).Methods 40 male Wistar rats were randomly divided into UUO group (A group,n=10),sham UUO group (B group,n=10),RSD+UUO group (C group,n=1O) and RSD + sham UUO group (D group,n=10).Rats in A group and C group underwent unilateral ureteral ligation,while those in B group and D group underwent sham operation.Rats in C group and D group were followed by RSD.Rats were sacrificed at 21 days after the operation to evaluate the fibrosis by Masson staining.Immunohistochemical staining and Western blotting were used to detect the expressions of collagen I (COL-Ⅰ),collagen Ⅲ (COL-Ⅲ) and TGF-β1 in four groups.The expression of miR-21 was detected by fluorescence in situ hybridization (FISH) and quantitative real-time PCR (RT-qPCR).Results A large amount of collagen deposition was observed in the renal interstitial area in A and C group compared to either B or D group (P ＜ 0.05),but the change in C group was decreased significantly than that in A group (P ＜ 0.05).Similarly,the expressions of COL-Ⅰ,COL-Ⅲ,TGF-β1and miR-21 were obviously higher in A and C group compared to either B or D group (P ＜ 0.05),but those change in C group were decreased significantly than those in A group (P ＜ 0.05).The above indexes were not significantly different between B group and D group (P ＞ 0.05).Conclusion RSD may relieve the renal interstitial fibrosis in UUO rats,and down-regulate the expression of TGF-β1 and miR-21.

Objective We aim to evaluate the value of the current serum creatinine reference interval ( RI ) provided by Industry Standard WS /T 404.5 in clinical practice.Methods The first time serum creatinine levels and urinary albumin /creatinine ratio were obtained from 67 605 adult patients ( <60 years old) who were treated in the First Hospital of China Medical University between October 1, 2014 and September 30, 2015 in this cross-sectional study.Estimated glomerular filtration rate ( eGFR ) calculated by chronic kidney disease epidemiology collaboration (CKD-EPI) equation and urinary albumin /creatinine ratio (ACR) were used to evaluate the clinical practical significance of current and old serum creatinine RIs as the criteria.Results 4.3% of normal subjects based on current RI were showed decreased eGFR, 98% of abnormal subjects based on the current RI were founded to have decreased eGFR . 1378 subjects were evaluated as increased based on current RI but as normal based on old RI , and 93.5% of these subjects were showed decreased eGFR .In addition, ACR was measured in 26 cases, and 18 out of 26 cases (69.2%) were confirmed to have elevated ACR (≥30 mg/g) and proteinuria.On the other hand of analysis, screening positive rates of declined eGFR were 43.6% by old RI and 61.9% by current RI in the subjects with eGFR under 90 ml(min ×1.73 m 2 ), and the performance of the current RI was obviously improved(χ2 =212.648,P <0.001).Conclusions The current reference interval of serum creatinine is favorable for the detection of renal dysfunction in patients .It is recommended that the current reference interval can be applied in the clinical laboratories as early as possible .

Objective:To observe the effect of mechanical vibration on the expression of microRNA-214-3p and serum interleukin-1β (IL-1β) in the broken ends of fractured bones in ovariectomized rats.Methods:Thirty 3-month-old female Wistar rats were randomly divided into a control group, a model group, and a vibration group, each of 10. An operation of ovariotomy was performed in those of the model and vibration groups to establish osteoporosis model. Five months later a model of mid femur fracture was made with animals in all the groups. Five days after their fracture, the vibration group received 20 minutes of whole-body vibration treatment at 35Hz for 5 days a week, while the control group and the model group received natural rearing without any additional intervention At 2 and 6 weeks after the operation, the Lane-Sandhu X-ray scoring system was used to evaluate the quality of fracture healing, and reverse-transcription polymerase chain reactions and enzyme-linked immunosorbent assays were used to detect miR-214-3p in the fractured bones and the serum levels of IL-1β.Results:At 2 weeks and 6 weeks after the operation the average growth score of the broken ends in the model group was significantly lower than that of the control group, while that of the vibration group was significantly higher than the model group′s average. Compared with the control group at the same time point, the average miR-214-3p content of the model and vibration groups was significantly higher 2 and 6 weeks after the surgery. Compared with the model group, the average level of miR-214-3p of the fractured ends of the vibration group was significantly lower at 6 weeks. Two and six weeks after the surgery, the average IL-1β of the model group was significantly higher than the control group′s average, and that of the vibration group was significantly lower.Conclusion:Mechanical vibration can promote osteoporotic fracture healing by inhibiting the expression of miR-214-3p and reducing the level of IL-1β at the broken ends of fractured bones.

Objective: To investigate the effect of pituitrin-water separation on hemoglobin and ovarian function in laparoscopic ovarian chocolate cyst removal. Methods: From February 2018 to February 2019, 82 patients with ovarian chocolate cyst removed by laparoscopy were selected from the Second Affiliated Hospital of Wenzhou Medical University.They were randomly divided into observation group and control group according to the digital table, with 41 cases in each group.The control group underwent traditional laparoscopic tear-and-tear ovarian cyst removal, while the observation group underwent pituitrin-water separation.The changes of perioperative indicators, the decrease of hemoglobin (Hb) before and after operation, the positive rate of normal ovarian tissue on cyst wall and the number of normal follicles attached to cyst wall, the changes of serum hormone levels before and after operation were compared between the two groups. Results: The amount of bleeding during operation in the observation group [(58.97±8.74)mL] was less than that in the control group [(118.93±24.21)mL], and the operation time in the observation group[(57.46±8.27)min] was shorter than that in the control group [(87.38±10.19)min] , the differences were ststistically significant between the two group(t=14.916, 14.598, all P<0.05). There was no statistically significant difference in the time of anal exhaust between the two groups (P>0.05). The decrease of Hb in the observation group [(0.71±0.16)g/L] was lower than that in the control group [(1.27±0.35)g/L] (t=9.318, P<0.05). The positive rate of normal ovarian tissue on cyst wall in the observation group (21.95%) was lower than that in the control group (56.10%), the number of normal follicles attached to the cyst wall in the observation group (2.65±0.49) was less than that in the control group (4.86±1.24) , the differences were ststistically significant between the two group(χ²=10.045, t=10.613, all P<0.05). The serum level of E₂ [(398.21±17.84)pmol/L] in the observation group was higher than that in the control group [(367.83±15.21)pmol/L], while FSH [(6.72±0.28)mIU/mL] and LH [(5.23±0.38)mIU/mL] levels in the observation group were lower than those in the control group [(7.19±0.35)mIU/mL and (5.69±0.31)mIU/mL], the differences were ststistically significant between the two group (t=8.298, 6.714, 6.006, all P<0.05). Conclusion The method of pituitrin-water separation is effective in laparoscopic ovarian chocolate cyst removal, which can reduce the injury during operation, has little effect on hemoglobin and improve the ovarian reserve function of patients.

Objective The aim of this study was to evaluate the safety and efficacy of 135 cm Corsair microcatheter inpercutaneous coronary intervention (PCI) for coronary chronic total occlusion (CTO) with antegrade approach via radial artery. Methods From June 2010 to February 2014, a total of 81 patients with CTO lesions treated with 135cm Corsair microcatheter (Asahi Intec Co, Japan) and transradial antegrade approach was enrolled in this study. The success rate of CTO-PCI, the rate of Corsair microcatheter crossing the CTO lesions and the number of balloon catheters utilization were retrospectively analyzed. Unique complications related to the Corsair microcatheter were also documented. Results Success recanalization of CTO were achieved in 73 (90.1%) patients. Crossing the CTO body with Corsair microcatheter was found in 56(84.8%) patients. The number of balloon utilized after Corsair microcatheter crossing the CTO was much lower than that of patients who Corsair microcatheter failed to cross (1.3±0.6 per patient versus 2.8±1.2per patient, P < 0.05). The success recanalization rate of combined using Fielder XT guidewire with Corsair microcatheter was 51.5%. There was no complications related to Corsair microcatheter during the index procedure, no major adverse cardiac events during in-hospital clinical follow-up. Conclusions Corsair microcatheter was safe and effective in the recanalization for CTO with transradialantegrade approach. It can simplify the CTO-PCI procedure and reduce the number of balloon catheters.

Objective:To investigate the predictors of the efficacy of extracorporeal shock wave lithotripsy (ESWL) in the treatment of ureteral calculi, and to evaluate the predictive value of the maximum ureteral wall thickness (UWT) in the treatment of ureteral calculi with ESWL.Methods:The clinical data of 138 patients with ureteral calculi treated with ESWL in the Second People's Hospital of Hefei from January 2020 to December 2020 were retrospectively analyzed. There were 91 males and 47 females. The age was (50.9±14.8) years old. The body mass index was (25.3±3.6) kg/m 2. The stones of 73 cases were located on the left side and 65 cases were on the right side. 70 cases had upper ureteral stones, 18 cases had middle ureteral stones, and 50 cases had lower ureteral stones. The median length of the stone was 8.5 (7.5, 10.5) mm. The CT value of the stone was 509 (343, 783) HU. The anteroposterior diameter of the renal pelvis was 12.0 (10.1, 16.0) mm, and UWT was (2.8 ± 0.8) mm. All patients underwent urinary non-contrast CT before lithotripsy, and the UWT of the stone bed was measured on the CT images. According to the stone removal situation 2 weeks after the operation, the patients were divided into a successful lithotripsy group and a failed lithotripsy group. Univariate analysis was used to compare the differences of various indicators between the two groups, and multivariate logistic regression was used to analyze the independent predictors of ESWL in the treatment of ureteral calculi for the indicators. The receiver operating characteristic (ROC) curve was used to calculate the area under the curve (AUC) of each independent predictor, and the cut-off value, sensitivity and specificity were analyzed. Results:All operations were successfully completed, and the success rate of the first-stage lithotripsy was 71.7% (99/138). The results of univariate analysis showed that the stone length diameter, stone CT value, anteroposterior diameter of renal pelvis, stone skin distance, and UWT were significantly different between the successful lithotripsy group and the failure group ( P<0.05). There was no significant difference in age, gender, body mass index, stone side and stone location ( P>0.05). The results of multivariate logistic analysis showed that stone length ( OR=1.393, P=0.015), stone CT value ( OR=1.002, P=0.043) and UWT ( OR=17.997, P<0.001) were all for the efficacy of ESWL in the treatment of ureteral stones. The ROC curve was used to compare the three independent predictors. The area under the UWT curve was the largest (AUC=0.898, P<0.001), followed by the length of the stone (AUC=0.744, P<0.001), and the CT value of the stone (AUC=0.672, P= 0.002). The cut-off value for UWT was 3.19 mm, which had a sensitivity of 91.9% and a specificity of 71.8% for predicting the success of ESWL lithotripsy. When dividing the patients into thin wall group (UWT ≤3.19 mm) and thick wall group (UWT>3.19 mm) according to the cut-off value, the success rates of one-stage lithotripsy in the two groups were 89.2% (91 / 102) and 22.2% (8/36), respectively ( P<0.05). Conclusions:UWT, calculus length and calculus CT value are independent predictors of the efficacy of ESWL in the treatment of ureteral calculi, and UWT has the best predictive value. When UWT≤3.19 mm, the success rate of ESWL in the treatment of ureteral calculi is higher.