1.Clinical characteristics and prognosis of carotid web-associated acute anterior circulation large vessel occlusion
Juntao YIN ; Li FENG ; Yanan JIA ; Xuemeng ZHAO ; Weiwei WANG ; Jing SUN ; Haikun LUO ; Yu WANG ; Tingting LIU ; Wan WANG ; Yuqing WEI
Chinese Journal of Neurology 2025;58(6):599-606
Objective:To investigate the clinical characteristics, prognosis, and the impact of different secondary prevention strategies on stroke recurrence in patients with carotid web (CaW)-associated acute anterior circulation large vessel occlusion (LVO).Methods:A retrospective analysis was conducted on 401 patients with acute anterior circulation LVO who underwent mechanical thrombectomy at 2 advanced stroke centers, Xingtai Central Hospital and Xingtai People′s Hospital, from January 2018 to June 2024. CaW was identified using digital subtraction angiography (DSA) and other imaging modalities. Based on the presence of CaW, patients were divided into CaW group and non-CaW group. Differences between the 2 groups in baseline characteristics, clinical features, and clinical outcomes were compared, and long-term follow-up was conducted for the CaW group.Results:Among the 401 patients, the CaW group consisted of 16 patients (4.0%), while the non-CaW group included 385 patients (96.0%). Compared to the non-CaW group, patients in the CaW group were younger [53 (46, 58) years vs 65 (56, 76) years, Z=-3.811, P<0.001], had a higher proportion of M1 segment middle cerebral artery occlusion [13/16 vs 54.0% (208/385), χ2=4.602, P=0.032] and a lower proportion of internal carotid artery terminus occlusion [1/16 vs 40.0% (154/385), χ2=6.024, P=0.014]; the 90-day modified Rankin Scale (mRS) score was significantly lower in the CaW group [1.00 (0, 1.75) vs 3.00 (1.00, 4.00), Z=14.210, P<0.001], and the proportion of patients with favorable functional independence (mRS score 0-2) was significantly higher [15/16 vs 45.7% (176/385), χ2=12.350, P<0.001] in the CaW group; the incidence of pneumonia in the CaW group was significantly lower [2/16 vs 42.6% (164/385), χ2=4.562, P=0.033]. Among the 16 CaW patients, 10 received antiplatelet therapy, 4 underwent carotid artery stenting (CAS), and 2 underwent carotid endarterectomy (CEA). During a median follow-up of 29 months, patients who underwent CAS and CEA had no stroke recurrence, while 2 patients who received antiplatelet therapy had stroke recurrence and subsequently underwent CAS and CEA. Conclusions:The proportion of CaW among patients with acute anterior circulation LVO was 4.0%. The patients with CaW were younger and had a higher proportion of M1 segment middle cerebral artery occlusion. Following mechanical thrombectomy, patients in the CaW group had good functional outcomes. Simple drug therapy may be insufficient to prevent stroke recurrence in CaW patients, and CAS and CEA may be effective therapeutic options.
2.Factor analysis and risk prediction model construction of clinical disease progression in hepatitis B e antigens-negative chronic hepatitis B cirrhosis
Wei LIU ; Haikun LIANG ; Li LI
Chinese Journal of Postgraduates of Medicine 2025;48(8):724-729
Objective:To explore the factors of clinical disease progression in patients with hepatitis B e antigen (HBeAg)-negative chronic hepatitis B (CHB) cirrhosis, and to construct a risk prediction model.Methods:A total of 395 HBeAg-negative CHB cirrhosis patients admitted to Handan Infectious Disease Hospital from March 2018 to December 2023 were retrospectively selected, and disease progression (follow-up up to February 2024) was taken as the end event. Among them, 113 patients developed disease progression (progression group) and 282 patients did not develop disease progression (non-progression group). Univariate and multivariate Logistic regression were used to analyze the risk factors for clinical disease progression in patients with HBeAg-negative CHB cirrhosis, and a nomogram risk prediction model was constructed. Calibration curve, receiver operating characteristic (ROC) curve and decision curve analysis (DCA) were used to verify the efficacy of the model.Results:The results of single factor analysis showed that age, family history of liver disease, alcohol consumption history, Child-Pugh rating, hypertension, model of end-stage liver disease (MELD) score, portal vein diameter, hepatitis B virus-DNA (HBV-DNA) measurement, albumin (ALB), spleen vein diameter, total bilirubin (TBIL), blood sodium, hemoglobin (Hb), blood ammonia, and white blood cell count (WBC), international normalized ratio (INR), liver stiffness measurement (LSM) and C-reactive protein (CRP) were the factors that affected clinical disease progression ( P<0.05). Logistic regression analysis showed that drinking history, Child-Pugh grade, MELD score, portal vein diameter, HBV-DNA quantification, splenic vein diameter, LSM, ALB, Hb and CRP were independent risk factors affecting clinical disease progression ( OR = 3.537, 6.407, 1.554, 1.658, 8.090, 1.681, 1.539, 0.382, 0.232, 1.924, P<0.05). The calibration curve showed that the prediction ability of the model was high, the ROC curve showed that the area under the curve (AUC) predicted by the model was 0.869 - 0.941, and the result of the DCA showed that the model had a high positive benefit. Conclusions:The influencing factors of clinical disease progression in HBeAg-negative CHB cirrhosis patients include alcohol consumption history, Child-Pugh grade, MELD score, portal vein diameter, HBV-DNA quantification, splenic vein diameter, LSM value, ALB, Hb and CRP. The risk early warning model based on the above factors has good predictive efficacy and clinical application efficacy.
3.Factor analysis and risk prediction model construction of clinical disease progression in hepatitis B e antigens-negative chronic hepatitis B cirrhosis
Wei LIU ; Haikun LIANG ; Li LI
Chinese Journal of Postgraduates of Medicine 2025;48(8):724-729
Objective:To explore the factors of clinical disease progression in patients with hepatitis B e antigen (HBeAg)-negative chronic hepatitis B (CHB) cirrhosis, and to construct a risk prediction model.Methods:A total of 395 HBeAg-negative CHB cirrhosis patients admitted to Handan Infectious Disease Hospital from March 2018 to December 2023 were retrospectively selected, and disease progression (follow-up up to February 2024) was taken as the end event. Among them, 113 patients developed disease progression (progression group) and 282 patients did not develop disease progression (non-progression group). Univariate and multivariate Logistic regression were used to analyze the risk factors for clinical disease progression in patients with HBeAg-negative CHB cirrhosis, and a nomogram risk prediction model was constructed. Calibration curve, receiver operating characteristic (ROC) curve and decision curve analysis (DCA) were used to verify the efficacy of the model.Results:The results of single factor analysis showed that age, family history of liver disease, alcohol consumption history, Child-Pugh rating, hypertension, model of end-stage liver disease (MELD) score, portal vein diameter, hepatitis B virus-DNA (HBV-DNA) measurement, albumin (ALB), spleen vein diameter, total bilirubin (TBIL), blood sodium, hemoglobin (Hb), blood ammonia, and white blood cell count (WBC), international normalized ratio (INR), liver stiffness measurement (LSM) and C-reactive protein (CRP) were the factors that affected clinical disease progression ( P<0.05). Logistic regression analysis showed that drinking history, Child-Pugh grade, MELD score, portal vein diameter, HBV-DNA quantification, splenic vein diameter, LSM, ALB, Hb and CRP were independent risk factors affecting clinical disease progression ( OR = 3.537, 6.407, 1.554, 1.658, 8.090, 1.681, 1.539, 0.382, 0.232, 1.924, P<0.05). The calibration curve showed that the prediction ability of the model was high, the ROC curve showed that the area under the curve (AUC) predicted by the model was 0.869 - 0.941, and the result of the DCA showed that the model had a high positive benefit. Conclusions:The influencing factors of clinical disease progression in HBeAg-negative CHB cirrhosis patients include alcohol consumption history, Child-Pugh grade, MELD score, portal vein diameter, HBV-DNA quantification, splenic vein diameter, LSM value, ALB, Hb and CRP. The risk early warning model based on the above factors has good predictive efficacy and clinical application efficacy.
4.Clinical characteristics and prognosis of carotid web-associated acute anterior circulation large vessel occlusion
Juntao YIN ; Li FENG ; Yanan JIA ; Xuemeng ZHAO ; Weiwei WANG ; Jing SUN ; Haikun LUO ; Yu WANG ; Tingting LIU ; Wan WANG ; Yuqing WEI
Chinese Journal of Neurology 2025;58(6):599-606
Objective:To investigate the clinical characteristics, prognosis, and the impact of different secondary prevention strategies on stroke recurrence in patients with carotid web (CaW)-associated acute anterior circulation large vessel occlusion (LVO).Methods:A retrospective analysis was conducted on 401 patients with acute anterior circulation LVO who underwent mechanical thrombectomy at 2 advanced stroke centers, Xingtai Central Hospital and Xingtai People′s Hospital, from January 2018 to June 2024. CaW was identified using digital subtraction angiography (DSA) and other imaging modalities. Based on the presence of CaW, patients were divided into CaW group and non-CaW group. Differences between the 2 groups in baseline characteristics, clinical features, and clinical outcomes were compared, and long-term follow-up was conducted for the CaW group.Results:Among the 401 patients, the CaW group consisted of 16 patients (4.0%), while the non-CaW group included 385 patients (96.0%). Compared to the non-CaW group, patients in the CaW group were younger [53 (46, 58) years vs 65 (56, 76) years, Z=-3.811, P<0.001], had a higher proportion of M1 segment middle cerebral artery occlusion [13/16 vs 54.0% (208/385), χ2=4.602, P=0.032] and a lower proportion of internal carotid artery terminus occlusion [1/16 vs 40.0% (154/385), χ2=6.024, P=0.014]; the 90-day modified Rankin Scale (mRS) score was significantly lower in the CaW group [1.00 (0, 1.75) vs 3.00 (1.00, 4.00), Z=14.210, P<0.001], and the proportion of patients with favorable functional independence (mRS score 0-2) was significantly higher [15/16 vs 45.7% (176/385), χ2=12.350, P<0.001] in the CaW group; the incidence of pneumonia in the CaW group was significantly lower [2/16 vs 42.6% (164/385), χ2=4.562, P=0.033]. Among the 16 CaW patients, 10 received antiplatelet therapy, 4 underwent carotid artery stenting (CAS), and 2 underwent carotid endarterectomy (CEA). During a median follow-up of 29 months, patients who underwent CAS and CEA had no stroke recurrence, while 2 patients who received antiplatelet therapy had stroke recurrence and subsequently underwent CAS and CEA. Conclusions:The proportion of CaW among patients with acute anterior circulation LVO was 4.0%. The patients with CaW were younger and had a higher proportion of M1 segment middle cerebral artery occlusion. Following mechanical thrombectomy, patients in the CaW group had good functional outcomes. Simple drug therapy may be insufficient to prevent stroke recurrence in CaW patients, and CAS and CEA may be effective therapeutic options.
5.Comparison of short-term safety of two anastomotic techniques when resecting Siewert type II adenocarcinoma of the esophagogastric junction: a multicenter retrospective cohort study
Haikun ZHOU ; Xiaopeng GAO ; Feiyu SHI ; Jingyu WANG ; Qinchuan YANG ; Shisen LI ; Jinqiang LIU ; Panpan JI ; Weidong WANG ; Pengfei YU ; Ruiqi GAO ; Xin GUO ; Gang JI ; Jiangpeng WEI
Chinese Journal of Gastrointestinal Surgery 2024;27(1):47-53
Objective:In this study, we aimed to compare the short-term safety of two digestive tract reconstruction techniques, laparoscopic total abdominal overlap anastomosis and laparoscopic-assisted end-to-side anastomosis, following radical resection of Siewert Type II adenocarcinoma of the esophagogastric junction.Methods:In this retrospective cohort study, we analyzed relevant clinical data of 139 patients who had undergone radical surgery for Siewert Type II esophagogastric junction adenocarcinoma. These included 89 patients treated at the First Affiliated Hospital of Air Force Medical University from November 2021 to July 2023, 36 patients treated at the First Affiliated Hospital of Xi'an Jiaotong University from December 2020 to June 2021, and 14 patients treated at the Yuncheng Central Hospital in Shanxi Province from September 2021 to November 2022. The group consisted of 107 men (77.0%) and 32 women (23.0%) of mean age 62.5±9.3 years. Forty-eight patients underwent laparoscopic total abdominal overlap anastomosis (overlap group), and 91 laparoscopic-assisted end-to-side anastomosis (end-to-side group). Clinical data, surgical information, pathological findings, postoperative recovery, and related complications were compared between the two groups.Results:There were no significant differences in general clinical data between the overlap and end-to-side anastomosis groups (all P>0.05), indicating comparability. There was no significant difference in operation time (267.2±60.1 minutes vs. 262.8±70.6 minutes, t=0.370, P=0.712). However, the intraoperative blood loss in the overlap group (100 [50, 100] mL) was significantly lower compared to the end-to-side group (100[50, 175] mL, Z=2.776, P=0.005). Compared to the end-to-side group, longer distances between the tumor and distal resection margin proximal(1.7±1.0 cm vs. 1.3±0.9 cm, t=2.487, P=0.014) and the tumor and distal resection margin (9.5±2.9 cm vs. 7.9±3.5 cm, t=2.667, P=0.009) were achieved in the overlap group. Compared with the end-to-side group, the overlap group achieved significantly earlier postoperative ambulation (1.0 [1.0, 2.0] days vs. 2.0 [1.0, 3.0] days, Z=3.117, P=0.002), earlier time to first drink (4.7±2.6 days vs. 6.2±3.0 days, t=2.851, P=0.005), and earlier time to first meal (6.0±2.7 days vs. 7.1±3.0 days, t=2.170, P=0.032). However, the hospitalization costs were higher in the overlap group (113, 105.5±37, 766.3) yuan vs. (97, 250.2±27, 746.9) yuan; this difference is significant ( t=2.818, P=0.006). There were no significant differences between the two groups in postoperative hospital stay, total number of lymph nodes cleared, or time to first postoperative flatus (all P>0.05). The incidence of surgery-related complications was 22.9%(11/48) in the overlap group and 19.8% (18/91) in the end-to-side group; this difference is not significant (χ2=0.187, P=0.831). Further comparison of complications using the Clavien-Dindo classification also showed no significant differences ( Z=0.406, P=0.685). Conclusions:Both laparoscopic total abdominal overlap anastomosis and laparoscopic-assisted end-to-side anastomosis are feasible for radical surgery for Siewert Type II esophagogastric junction adenocarcinoma. Laparoscopic total abdominal overlap anastomosis achieves longer proximal and distal resection margins and better postoperative recovery; however, end-to-side anastomosis is more cost-effective.
6.Comparison of short-term safety of two anastomotic techniques when resecting Siewert type II adenocarcinoma of the esophagogastric junction: a multicenter retrospective cohort study
Haikun ZHOU ; Xiaopeng GAO ; Feiyu SHI ; Jingyu WANG ; Qinchuan YANG ; Shisen LI ; Jinqiang LIU ; Panpan JI ; Weidong WANG ; Pengfei YU ; Ruiqi GAO ; Xin GUO ; Gang JI ; Jiangpeng WEI
Chinese Journal of Gastrointestinal Surgery 2024;27(1):47-53
Objective:In this study, we aimed to compare the short-term safety of two digestive tract reconstruction techniques, laparoscopic total abdominal overlap anastomosis and laparoscopic-assisted end-to-side anastomosis, following radical resection of Siewert Type II adenocarcinoma of the esophagogastric junction.Methods:In this retrospective cohort study, we analyzed relevant clinical data of 139 patients who had undergone radical surgery for Siewert Type II esophagogastric junction adenocarcinoma. These included 89 patients treated at the First Affiliated Hospital of Air Force Medical University from November 2021 to July 2023, 36 patients treated at the First Affiliated Hospital of Xi'an Jiaotong University from December 2020 to June 2021, and 14 patients treated at the Yuncheng Central Hospital in Shanxi Province from September 2021 to November 2022. The group consisted of 107 men (77.0%) and 32 women (23.0%) of mean age 62.5±9.3 years. Forty-eight patients underwent laparoscopic total abdominal overlap anastomosis (overlap group), and 91 laparoscopic-assisted end-to-side anastomosis (end-to-side group). Clinical data, surgical information, pathological findings, postoperative recovery, and related complications were compared between the two groups.Results:There were no significant differences in general clinical data between the overlap and end-to-side anastomosis groups (all P>0.05), indicating comparability. There was no significant difference in operation time (267.2±60.1 minutes vs. 262.8±70.6 minutes, t=0.370, P=0.712). However, the intraoperative blood loss in the overlap group (100 [50, 100] mL) was significantly lower compared to the end-to-side group (100[50, 175] mL, Z=2.776, P=0.005). Compared to the end-to-side group, longer distances between the tumor and distal resection margin proximal(1.7±1.0 cm vs. 1.3±0.9 cm, t=2.487, P=0.014) and the tumor and distal resection margin (9.5±2.9 cm vs. 7.9±3.5 cm, t=2.667, P=0.009) were achieved in the overlap group. Compared with the end-to-side group, the overlap group achieved significantly earlier postoperative ambulation (1.0 [1.0, 2.0] days vs. 2.0 [1.0, 3.0] days, Z=3.117, P=0.002), earlier time to first drink (4.7±2.6 days vs. 6.2±3.0 days, t=2.851, P=0.005), and earlier time to first meal (6.0±2.7 days vs. 7.1±3.0 days, t=2.170, P=0.032). However, the hospitalization costs were higher in the overlap group (113, 105.5±37, 766.3) yuan vs. (97, 250.2±27, 746.9) yuan; this difference is significant ( t=2.818, P=0.006). There were no significant differences between the two groups in postoperative hospital stay, total number of lymph nodes cleared, or time to first postoperative flatus (all P>0.05). The incidence of surgery-related complications was 22.9%(11/48) in the overlap group and 19.8% (18/91) in the end-to-side group; this difference is not significant (χ2=0.187, P=0.831). Further comparison of complications using the Clavien-Dindo classification also showed no significant differences ( Z=0.406, P=0.685). Conclusions:Both laparoscopic total abdominal overlap anastomosis and laparoscopic-assisted end-to-side anastomosis are feasible for radical surgery for Siewert Type II esophagogastric junction adenocarcinoma. Laparoscopic total abdominal overlap anastomosis achieves longer proximal and distal resection margins and better postoperative recovery; however, end-to-side anastomosis is more cost-effective.
7.The short-term efficacy of left-sided three-port total laparoscopic distal gastrectomy: a pros-pective study
Qinchuan YANG ; Haikun ZHOU ; Chao YUE ; Di TANG ; Weidong WANG ; Ruiqi GAO ; Zhenchang MO ; Panpan JI ; Zhiyu GUO ; Changming ZHANG ; Yannian WANG ; Juan YU ; Xiangxiang GAO ; Pengfei YU ; Jiangpeng WEI ; Xiaohua LI ; Gang JI
Chinese Journal of Digestive Surgery 2023;22(9):1120-1128
Objective:To investigate the short-term efficacy of left-sided three-port total laparoscopic distal gastrectomy (TPTLDG).Methods:The prospective randomized controlled study was conducted. The 68 patients undergoing laparoscopic distal gastrectomy in the First Affiliated Hospital of Air Force Medical University from March 2022 to March 2023 were collected. All patients were randomly assigned to the TPTLDG group with a double number, and to the five-port laparoscopic distal gastrectomy (FPLDG) group with a single number, respectively. Observation indicators: (1) grouping situations of the enrolled patients; (2) comparison of perioperative condition; (3) comparison of complications during postoperative 30 days; (4) comparison of pathological examination. Measure-ment data with normal distribution were represented as Mean± SD, and comparison between groups was conducted using the independent sample t test. Measurement data with skewed distribution were represented as M( Q1, Q3), and comparison between groups was conducted using the Mann-Whitney U test. Count data were described as absolute numbers, and comparison between groups was conducted using the chi-square test or continuous correction chi-square test. Comparison of ordinal data was analyzed using the non‐parameter rank sum test. Results:(1) Grouping situations of the enrolled patients. A total of 59 patients of gastric cancer were selected for eligibility. There were 40 males and 19 females, aged 59.00(52.00, 67.00)years. The gender (male, female), age, body mass index (BMI), Caprini score (≤2, ≥3), nutritional risk screening 2002 (<3, ≥3), Eastern Coopera-tive Oncology Group performance status (0, 1), preoperative hypersensitive C-reactive protein, preoperative IL-6, preoperative white blood cell count, preoperative albumin were 19, 11, 59.00(51.25,65.25)years, 21.92(20.93,22.73)kg/m 2, 7, 23, 24, 6, 18, 12, 0.78(0.78,1.46)mg/L, 3.07(1.50,10.56)μg/L, 6.07(4.94,7.19)×10 9/L, 44.30(40.83, 46.15) g/L in the 30 patients of TPTLDG group, versus 21, 8, 57.00(51.00, 67.00)years, 21.90(20.95, 23.35)kg/m 2, 11, 18, 24, 5, 17, 12, 1.13(0.78,11.40)mg/L, 5.56(1.88,15.12)μg/L, 5.54(4.71,6.70)×10 9/L, 43.55(40.25,44.88)g/L in the 29 patients of FPLDG group, showing no significant difference in the above indicators between the two groups ( χ2=0.557, Z=-0.444, -0.805, χ2=1.482, 0.074, 0.012, Z=-1.259, -1.262, -0.819, -1.199, P>0.05), confounding bias ensured comparability between the two groups. (2) Comparison of perioperative condition. The length of incision, time to removing drainage tube, IL-6 at postoperative day 3, cost of hospital stay were 6.65(6.48,6.93)cm, 3.00(0,3.00)days, 29.18 (13.67, 43.53)μg/L, 84 164.15(73 084.72, 96 782.14)yuan in the TPTLDG group, versus 8.00(7.50,8.35)cm, 3.00(3.00,4.00)days, 47.56(21.31,85.79)μg/L, 92 120.43(87 069.33, 113 089.74)yuan in the FPLDG group, showing significant differences in the above indicators between the two groups ( Z=-11.065, -2.141, -2.940, -2.220, P<0.05). (3) Comparison of complications during postoperative 30 days. The incidence rate of complications during postoperative 30 days was 30.00%(9/30) and 24.14%(7/29) in the TPTLDG group and FPLDG group, respectively, showing no significant difference between the two groups ( χ2=0.256, P>0.05). (4) Comparison of pathological examination. Cases with pathological N staging as 0 stage, 1 stage, 2 stage, 3 stage were 22, 2, 4, 2 in the TPTLDG group, versus 13, 7, 4, 5 in the FPLDG group, showing a significant difference between the two groups ( Z=-2.021, P<0.05). Conclusion:TPTLDG is safe and feasible for gastric cancer, with a good short-term efficacy.
8.JAK Inhibitors Therapy for Rheumatoid Arthritis :An Overview of Systematic Reviews
Haikun WANG ; Jie WANG ; Na WU ; Cunming LI ; Ziwei LIN ; Wei WU
China Pharmacy 2021;32(11):1362-1369
OBJECTIVE:To overview t he s ystematic revi ews on JAK inhibitors in the treatment of rheumatoid arthritis (RA), and to provide evidence-based basis for the treatment of RA with these drugs. METHODS :The Cochrane Library ,PubMed, Embase,CNKI,Wanfang database and VIP were electronically searched to collect systematic reviews of JAK inhibitors in the treatment of RA from inception to Dec. 2020. After data extraction of included systematic review ,PRISMA statement ,AMSTAR2 scale and GRADE were used to evaluate the report quality ,methodological quality and the level of evidence for outcome indicators. RESULTS :A total of 12 systematic reviews involving 103 outcomes were included. PRISMA score of systematic reviews was between 17.5 and 22.5,and the reported quality defects were mainly reflected in scheme ,registration and other aspects. AMSTAR 2 evaluation results showed that there were 6 studies of low quality and 6 studies of very low quality ,without high-quality study and medium-quality study. GRADE assessment results for outcome indicators showed low to medium quality of evidence. The summary of evidence showed that compared to placebo ,JAK inhibitor could alleviate various indicators of RA ; compared to adalimumab ,the advantage was not obvious. JAK inhibitors did not increase the incidence of serious adverse events , but the systematic reviews were inconsistent in their effects on the incidence of total adverse events and liver injury. CONCLUSIONS:The efficacy of JAK inhibitors in the treatment of RA has certain advantages over placebo ,but more studies are needed to demonstrate the efficacy of JAK inhibitors in the treatment of RA compared to other drugs ;the advantage of safety is uncertain.
9.Experimental study of serum SM22 in the diagnosis of acute intestinal ischemia
Haikun LI ; Minhua WANG ; Xiaoqing ZHOU ; Qinghui YIN ; Bin YE ; Xiangfu ZENG ; Xiaoping LIU ; Xiansen ZHU ; Xiangtai ZENG
Chinese Journal of General Surgery 2019;34(2):151-153
Objective To evaluate smooth muscle protein of 22 kDa (SM22) in the diagnosis of acute intestinal ischemia.Methods 96 healthy adult SD rats were evenly divided into experimental group and control group,with each group subdivided into 6 subgroups,subject respectively to superior mesenteric artery ligation or sham operation.The venous blood samples were extracted from each group rats' right heart atO.5,1,2,4,8,12 h after the operation,for SM22 testing and small intestines tissues for direct immunofluorescence staining of SM22.Results The serum SM22 concentration reached a peak at 4 h (265 ± 15) mg/L,then gradually decreased (P < 0.05).The I-FABP was mainly expressed in the epithelium of intestinal mucosa.During the 4 hours of intestinal ischemia,The number of SM22 positive particles did not change.After 4 hours,the number of SM22 positive granules had gradually decreased compared with the control group (all P < 0.05).Conclusion SM22 mainly exists in the smooth muscle of intestinal,during the ischemic necrosis of the intestinal muscle layer SM22 leaks into blood stream,resulting in high serum levels of SM22 facilitating early diagnosis of acute intestinal ischemia.
10.Establishment and evaluation of a method for determination of total arsenic in urine by test-tube rapid digestion hydride generation atomic fluorescence spectrometry
Haikun WU ; Cuiling LA ; Yuanbo ZHAO ; Ping CHEN ; Runjie LI ; Shaofeng JIA ; Guanglan PU
Chinese Journal of Endemiology 2017;36(4):293-296
Objective To establish and evaluate a method for determination of total arsenic in urine by test-tube rapid digestion hydride generation atomic fluorescence spectrometry.Methods After digestion of urine samples using graduated test-tube and graphite digestion apparatus,arsenic content in urine was determined with atomic fluorescence spectrometer.Then the test results were evaluated by using quality control measures,such as precision and accuracy experiments,and the results between different laboratories were reviewed and compared.Results The urinary arsenic was in a linear range of 0-0.300 mg/L,correlation coefficient (r) > 0.999 3,detection limit was 0.000 21 mg/L,relative standard deviation (RSD) ≤4.62% and the recoveries of standard addition were 93.9%-104.3%.The value of standard reference material measured was within the allowable range.The blind sample of the national urinary arsenic was qualified.Conclusions This method is suitable for large scale determination of urinary arsenic for its micro sample amount needed,less interference and strong practicability.The error results are in a controlled range.

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