1.Re-evaluation of the cardiovascular safety of rosiglitazone
Yanming CHEN ; Xixiang TANG ; Longyi ZENG
Chinese Journal of Endocrinology and Metabolism 2014;30(6):456-459
Rosiglitazone is one of thiazolidinediones (TZD),an antidiabetic agent which improves insulin sensitivity,but the cardiovascular safety of the drug remains controversial.The new re-evaluation of the RECORD trial has suggested that rosiglitazone-containing drugs do not show an increased risk of heart attack compared to the standard type 2 diabetes medicines,such as mefformin and sulfonylurea.The post hoc analysis of the BARI 2D also indicates that rosiglitazone may not relate with the increased risk of major ischemic cardiovascular events.According to these new results,there is no clear evidence that rosiglitazone may increase cardiovascular risk.The U.S.Food and Drug Administration announced in July 2013 that it is requiring the removal of some prescribing and dispensing restrictions for rosiglitazone-containing diabetes medicines.
2.Management of femoral artery pseudoaneurysm caused by heroin injection
Xixiang HU ; Tianxiong SHI ; Jianhang MIAO ; Caihong CHEN
Chinese Journal of General Surgery 1997;0(06):-
Objective To study the management of femoral artery pseudoaneurysm caused by heroin (injection).Methods 11 cases of femoral artery pseudoaneurysm were treated. 4 cases presented with ruptured aneurysm and were treated emergently by direct ligation of the aneurysmal artery through a femoral incision. 2 cases (underwent) elective operation in which the iliac artery was initially exposed through an extraperitoneal (lower) (abdominal) incision to control bleeding, and then the aneurysmal artery was ligated through a femoral (incision).Results All of the operations were successful, and no gangrene of the affected limb occurred.(Conclusions) Arterial ligation for femoral artery pseudoaneurysm caused by heroin injection is simple and (effective). (Intraoperative) observation of distal arterial backflow,measurement of (arterial) pressure and (intraoperative) (arteriography) can improve the safety of the operation.
3.Clinical research for the significance of inflammatory factors and adiponectin in type 2 diabetes complicated with non-alcohoic fatty liver disease
Yanming CHEN ; Manman WANG ; Ziming WANG ; Shengqing HE ; Zhuozhuo REN ; Xixiang TANG ; Longyi ZENG
Clinical Medicine of China 2012;28(1):1-5
ObjectiveTo investigate the clinical significance of inflammatory factors and adiponectin in type 2 diabetes milletus complicated with non-alcoholic fatty liver disease.Methods Two hundred and ten subjects aging from 25.0 to 65.0 years old,including 106 men and 104 women,were recruited into this study.They were divided into four groups: Forty cases of healthy control (NC),60 cases with newly-diagnosed type 2 diabetes (T2DM),65 cases with simple non-alcoholic fatty liver disease (NAFLD) and other 45 cases with newly-diagnosed T2DM complicated with NAFLD.The physical examination was performed for each patient.Serum levels of alanine aminotransferase (ALT),gamma-glutamyl transpeptidase (GGT),fasting plasma glucose (FPG),glycation hemoglobin A 1 c ( GHbA1c ),creatinine ( Cr),uric acid ( UA ),2 hours postprandic plasma glucose (2hPG),fasting insulin (FINS),lipid profiles were measured.Insulin resistance index (HOMAIR) was calculated.Tumor necrosis factor-α (TNF-α),high sensitive C-reactive protein (hs-CRP) and adiponectin were also detected.Results The serum levels of ALT and GGT,body mass index and waist/hip ratio were higher in the NAFLD,T2DM with NAFLD patient groups than that in T2DM and NC group ( P <0.05or P <0.01 ).The serum levels of TG and LDL-C were significantly higher in T2DM,NAFLD and T2DM with NAFLD groups than that of NC group.And serum TG levels in T2DM with NAFLD group were higher than that of T2DM group (P < 0.05).FPG and GHbAl c were higher in T2DM and T2DM with NAFLD groups than that of NAFLD and NC groups.The serum levels of TNF-α,hs-CRP and HOMA-IR were higher in T2DM,NAFLD and T2DM with NAFLD groups than that of NC group.T2DM with NAFLD group had higher levels of TNF-α,hs-CRP and HOMA-IR compared with T2DM group.However,serum adiponectin levels of T2DM,NAFLD and T2DM with NAFLD groups were lower than that of NC group.And it was lower in T2DM with NAFLD group when compared with NC group ( P < 0.05 ).Adiponectin was negatively associated with TNF-α,hs-CRP and HOMA-IR (r =-0.635,-0.668,-0.752 respectively,P < 0.0l ).But HOMA-IR was positively associated with TNF-α,hs-CRP( r =0.667,0.706 respectively,P < 0.01 ).ConclusionInflammatory factors and adiponectin may play important roles in the pathophysiology and progression of T2DM and NAFLD.The protective effects of adiponectin may come from its anti-inflammatory activity to relieve insulin resistance for NAFLD.
4.Interventional treatment of high-position malignant biliary obstruction
Xixiang YU ; Guoqing ZHU ; Chuangsheng SHI ; Zhenjing SHI ; Bin CHEN ; Linfen HUANG ; Yi NAN
Chinese Journal of Hepatobiliary Surgery 2010;16(1):30-33
Objective To explore the difficulty and strategy of percutaneous transheptic stenting for the junction of malignant hepatic duct obstruction. Method Twenty-three patients with highly malignant biliary obstruction received percutaneous transheptic biliary drainage (PTBD) by placement of stent and/or internal-external drainage tube. All the 23 patientws were followed up to determine the successful rate of surgery, the incidence of complications, decreased serum level of bilirubin, patency time of biliary stent and survival time. Results The initial operation was sucessful in 22 cases, accounting for 95.65%. Twenty-one patients had significant decline in total bilirubin (60%) and 2 had not (10%). The levels of alanine aminotransferase (GPT) and aspartate aminotransferase (GOT) decreased markedly and returned to nomral in an average of 18 d. After operation, 2 patients had fever,1 biliary tract bleeding, 6 pain in the right upper abodminal region, 1 localized peritonitis around the puncture point, 3 GPT increase and 1 drainage tube slip. There were no serious complications such as hemorrhea and biliary fistula etc. The symptoms of all these complications disappeared in 2 to 5 days through haemostasis, anti-inflammatory therapy and liver function protection. The median survival time was 8.5 months. Conclusion Although the merging of malignant hepatic duct obstruction stenting is difficult, try to pass through the obstruction by guide wire and master the right methods of operation can significantly improve the successful rate of surgery.
5.Ultrasonic controlling of degradation of polymer materials
Xixiang GAO ; Jian ZHANG ; Bing CHEN ; Yongquan GU ; Jianxin LI ; Shuwen ZHANG ; Lin YE ; Zengguo FENG
Chinese Journal of Tissue Engineering Research 2014;(30):4868-4872
BACKGROUND:Degradable polymer materials initiate the degradation process immediately after implantation. How to regulate the degradation of these materials is rarely reported at present. OBJECTIVE:To study the effect of ultrasonic wave on control ing the degradation of polymer materials. METHODS:The sample is made ofε-caprolactone/L-lactide copolymer, and its core was coated with low density polyethylene on the surface with the fol owing four different methods. (1) The core surface was firstly covered with CaCl 2 powder, and then coated with polyethylene. (2) The core was firstly coated with polyethylene and coarsened for 3 hours. (3) The core surface was firstly covered with CaCl 2 powder, and then coated with polyethylene, and coarsened for 3 hours. (4) The core was directly coated with polyethylene. The four kinds of specimens obtained were embedded in pork for ultrasonic bombardment experiment in vitro. RESULTS AND CONCLUSION:In the specimens prepared with methods 1 and 4, the lyophobic layer could protect core materials before ultrasonic treatment, and no absorption peak was found at 631 nm. After ultrasonic treatment, the lyophobic layer was destroyed, toluidine blue dye was released, leading to change the color of immersion solution and increase the absorption peak at 631 nm. In the specimens prepared with methods 2 and 3,the lyophobic layer cannot exhibit the protection effects, the absorption peak was found at 631 nm. Under electron microscope, the appearance of the specimens in four groups was changed obviously. It is feasible to control the starting of the degradation by coating the degradable copolymer with LDPE and using ultrasonic as a trigger.
6.Reduction in thyroid dose from neck CT angiography with 64-slice spiral CT with automatic tube current modulation technique
Changsheng LIü ; Yunfei ZHA ; Maojin LI ; Baojun XIE ; Jun CHEN ; Li QIU ; Zhoufeng PENG ; Fuwen YANG ; Xixiang CHEN
Chinese Journal of Radiological Medicine and Protection 2010;30(4):486-488
Objective To assess the effectiveness of Z-axis automatic tube current modulation ( ATCM) technique with respect to dose reduction and image noise in the thyroid regional tissues during neck computed tomography angiography (CTA). Methods A total of 140 patients underwent neck CTA with 64-slice spiral CT, and were randomized into fixed-tube current group and ATCM group. Objective noise, CTDIw, DLP and mA of each group were recorded. Results The image qualities of all the patients were diagnostically acceptable, though the objective noise of neck in the ATCM group was higher than that in the group of fixed-tube current (P< 0.05 ). The radiation doses in the ATCM group [ CTDIw (35.99±1.31 ) mGy, DLP (11 121.39 ±5.51) mGy·cm] were significantly inferior to those in the group of fixed tube current [ CTDIw (43.22±1.42) mGy, DLP (1514.45±5.56) mGy·cm]. Conclusions Compared with fixedtube current technique, ATCM technique could significantly reduce the radiation dose in neck CT with diagnostic acceptability of the image quality.
7.Lumbar artery embolization for the treatment of massive hemorrhage caused by percutaneous transforaminal endoscopic discectomy: preliminary experience in 4 patients
Journal of Interventional Radiology 2017;26(11):1033-1037
Objective To evaluate the curative effect and safety of lumbar artery embolization in treating massive hemorrhage caused by percutaneous transforaminal endoscopic discectomy (PTED).Methods From January 2013 to December 2016,lumbar artery angiography was performed in 4 patients with massive hemorrhage caused by PTED.Based on the angiographic findings,lumbar artery embolization therapy with embolic microspheres and spring coils was carried out.Results Lumbar artery angiography revealed that extravasation of contrast agent was detected in 3 patients and pseudoaneurysm in one patient.The bleeding completely stopped immediately after lumbar artery embolization in all 4 patients.The patients were followed up for 1-3 months,and no re-bleeding or serious complications occurred.Conclusion It is very difficult to make medical and surgical management for massive hemorrhage caused by PTED.Lumbar artery embolization is safe,effective and minimally-invasive for the treatment of massive hemorrhage caused by PTED.This therapy is worthy of clinical use.
8.Analysis of the factors associated with seizure recurrence after a first unprovoked seizure in adults
Yuanliu XIAO ; Zongmei CHEN ; Xixiang QIN ; Zhu CAO ; Xifen WU ; Wenxin LU ; Ziyi CHEN
Chinese Journal of Nervous and Mental Diseases 2018;44(5):257-260
Objective To explore the influence factors of recurrence after a first unprovoked seizure in adults within 1 year. Methods One hundred fifty-nine adult patients with first unprovoked seizure were recruited in the study. Patients were then divided into the relapse group (n=54) and the relapse group (n=105). Statistic analysis was performed on the clinical data including gender, age, history of traumatic brain injury, electroencephalogram (EEG) and brain imaging, the form of attack time, seizures, diabetes mellitus, hypertension, coronary heart disease, hyperlipidemia disease. Results Multiariable Logistic regression analysis found that history of brain injury (P=0.033, OR=5.547), period (P=0.001, OR=33.660) in the evening, cortical lesions (P=0.004, OR=14.865) were independent risk factors for recurrence. Conclusions Adult patients with first unprovoked seizure have a high risk of one-year recurrence if the patients have a history of traumatic brain injury, the radiographic abnormalities, cortical lesions and sleep attacks.
9.Functional electrical stimulation can improve the gait of hemiplegic stroke survivors with an ankle-foot orthosis
Tingting SU ; Qianqian HUANG ; Yun JIN ; Xiaoyong CHEN ; Xixiang WANG ; Haiyan LIN ; Songhe JIANG
Chinese Journal of Physical Medicine and Rehabilitation 2020;42(11):1006-1010
Objective:To observe the effect of functional electrical stimulation (FES) combined with an ankle-foot orthosis (AFO) and gait training on lower limb motor function, gait parameters and the joint angles of hemiplegic stroke survivors.Methods:Thirty-two stroke survivors who met the inclusion criteria were selected and randomly divided into a control group ( n=10), an orthosis group ( n=10), and a combination therapy group ( n=12). In addition to routine medication and rehabilitation, the control group received only gait training, the orthosis group received gait training and an AFO and the combination therapy group was given FES, an AFO and gait training. All three groups were treated for four weeks. Then, the Fugl-Meyer lower extremity assessment (FMA-LE), the Brunnstrom lower extremity assessment (BRL), and Functional Ambulation Categories (FACs) were used to evaluate the lower limb motor function and walking ability of the three groups. The gait parameters of the three groups were quantified using a three-dimensional gait analyzer, and the changes in the hemiplegic gait before and after treatment were compared among the three groups. Results:After the treatment the average FMA-LE, FAC and BRL scores, time-space parameters, and joint angle parameters of all three groups had all improved significantly. After the intervention the average indicators in the combined therapy group (including stride frequency, stride length and walking speed) were all significantly better than in the other two groups.Conclusions:Adding FES to gait training with an AFO can effectively improve lower limb motor function and the walking ability of hemiplegic stroke survivors.
10.Investigation and analysis on the infection control and radiation safety of radiodiagnostic workplace for COVID-19
Lijun TANG ; Wenshan ZHOU ; Sheng LIU ; Xiangjun YANG ; Xixiang HUO ; Shuguang XIE ; Jing LI ; Ansheng LIU ; Shidi TANG ; Ziqiao LEI ; Weimin CHEN ; Yantao NIU
Chinese Journal of Radiological Medicine and Protection 2020;40(4):253-258
Objective:To survey and supervise the risk of infection control and radiation safety in the radiological diagnostic workplace for COVID-19, and provide data support for the safety protection of radiographers and related staff.Methods:4 emergency hospitals for COVID-19 including 2 makeshift hospitals, module hospital and brick pattern hospital in Hubei province were performed for testing and evaluation of imaging performance and radiological protection for the 8 new installed CT scanners and places according to the national standards of WS 519-2019 and GBZ 130-2013. The infection control safety factors such as the layout of the equipment room were monitored and investigated. Two COVID-19 designated hospitals including general hospital and infectious disease specialized hospital were selected to carry out field investigation and sampling of environmental biological samples for 4 CT rooms. Then the samples were detected for the nucleic acid of novel coronavirus. The results of radiodiagnostic workplace overall arrangement, infection prevention and the nucleic acid testing were analyzed, and the biological safety reliability and risk point were evaluated.Results:The indicators of imaging performance and radiation protection for 8 CT scanners in emergency hospitals could meet the requirements of national standards.Each of 2 makeshift hospitals had 3 CT rooms with the area of 38.8 m 2 and 4 mm Pb equivalent thickness of protective shielding. The CT rooms in module hospital and brick pattern hospital were 20.0 m 2, and 35.8 m 2 in areas, with 4 mm Pb equivalent and 3 mm Pb equivalent thickness of protection shielding, respectively. The 8 radiological diagnostic workplaces of the emergency hospitals were designed and constructed based on " three zones with two passage ways" . The result of the nucleic acid test indicated that the positive samples were found at the multiple sites such as scanning bed, internal of gantry and ground touched by patients in CT scanning room. The areas such as console panel and ground were risked of pollution by the virus infected hands and feet of radiographers. In addition, the similar positive samples were found in the areas in scanning room with no touch of patients, such as observation window and air outlet. Conclusions:8 CT scanners and rooms in 4 emergency hospitals basically meet the requirements of imaging performance and radiation protection. The disinfection of COVID-19 radiodiagnostic workplace should be standardized.