1.Percutaneous coronary intervention vs . medical therapy in patients on dialysis with coronary artery disease in China.
Enmin XIE ; Yaxin WU ; Zixiang YE ; Yong HE ; Hesong ZENG ; Jianfang LUO ; Mulei CHEN ; Wenyue PANG ; Yanmin XU ; Chuanyu GAO ; Xiaogang GUO ; Lin CAI ; Qingwei JI ; Yining YANG ; Di WU ; Yiqiang YUAN ; Jing WAN ; Yuliang MA ; Jun ZHANG ; Zhimin DU ; Qing YANG ; Jinsong CHENG ; Chunhua DING ; Xiang MA ; Chunlin YIN ; Zeyuan FAN ; Qiang TANG ; Yue LI ; Lihua SUN ; Chengzhi LU ; Jufang CHI ; Zhuhua YAO ; Yanxiang GAO ; Changan YU ; Jingyi REN ; Jingang ZHENG
Chinese Medical Journal 2025;138(3):301-310
BACKGROUND:
The available evidence regarding the benefits of percutaneous coronary intervention (PCI) on patients receiving dialysis with coronary artery disease (CAD) is limited and inconsistent. This study aimed to evaluate the association between PCI and clinical outcomes as compared with medical therapy alone in patients undergoing dialysis with CAD in China.
METHODS:
This multicenter, retrospective study was conducted in 30 tertiary medical centers across 12 provinces in China from January 2015 to June 2021 to include patients on dialysis with CAD. The primary outcome was major adverse cardiovascular events (MACE), defined as a composite of cardiovascular death, non-fatal myocardial infarction, and non-fatal stroke. Secondary outcomes included all-cause death, the individual components of MACE, and Bleeding Academic Research Consortium criteria types 2, 3, or 5 bleeding. Multivariable Cox proportional hazard models were used to assess the association between PCI and outcomes. Inverse probability of treatment weighting (IPTW) and propensity score matching (PSM) were performed to account for potential between-group differences.
RESULTS:
Of the 1146 patients on dialysis with significant CAD, 821 (71.6%) underwent PCI. After a median follow-up of 23.0 months, PCI was associated with a 43.0% significantly lower risk for MACE (33.9% [ n = 278] vs . 43.7% [ n = 142]; adjusted hazards ratio 0.57, 95% confidence interval 0.45-0.71), along with a slightly increased risk for bleeding outcomes that did not reach statistical significance (11.1% vs . 8.3%; adjusted hazards ratio 1.31, 95% confidence interval, 0.82-2.11). Furthermore, PCI was associated with a significant reduction in all-cause and cardiovascular mortalities. Subgroup analysis did not modify the association of PCI with patient outcomes. These primary findings were consistent across IPTW, PSM, and competing risk analyses.
CONCLUSION
This study indicated that PCI in patients on dialysis with CAD was significantly associated with lower MACE and mortality when comparing with those with medical therapy alone, albeit with a slightly increased risk for bleeding events that did not reach statistical significance.
Humans
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Percutaneous Coronary Intervention/methods*
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Male
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Female
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Coronary Artery Disease/drug therapy*
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Retrospective Studies
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Renal Dialysis/methods*
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Middle Aged
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Aged
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China
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Proportional Hazards Models
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Treatment Outcome
2.Metabolomic study of the improvement of nitazoxanide on Western-diet induced hepatic steatosis in ApoE-/- mice
Hu-tai-long ZHU ; Xiao-fan CHENG ; Xin GUO ; Le CHANG ; Yin-di ZHAO ; Shang-ze WU ; De-li DONG
Acta Pharmaceutica Sinica 2024;59(9):2529-2538
Nitazoxanide is an FDA-approved antiprotozoal drug. Our previous study found that oral administration of nitazoxanide inhibited Western diet (WD)-induced hepatic steatosis in ApoE-/- mice. However, the specific mechanism remains to be elucidated. In the present study, we performed an untargeted metabolomics approach to reveal the effect of nitazoxanide on the liver metabolic profiles in WD-fed ApoE-/- mice, and carried out the cellular experiments to elucidate the underlying mechanisms. UPLC-MS-based untargeted metabolomics analysis was used to investigate the effect of nitazoxanide on global metabolite changes in liver tissues. The differential metabolites were screened for enrichment analysis and pathway analysis. Hepatocytes were treated with tizoxanide, the metabolite of nitazoxanide, to investigate the underlying mechanism based on the findings in metabolomics study. The improvement of liver lipid metabolism disorders by nitazoxanide treatment in WD-fed ApoE-/- mice was mainly through regulating glycerophospholipid metabolism,
3.Chinese expert consensus on blood support mode and blood transfusion strategies for emergency treatment of severe trauma patients (version 2024)
Yao LU ; Yang LI ; Leiying ZHANG ; Hao TANG ; Huidan JING ; Yaoli WANG ; Xiangzhi JIA ; Li BA ; Maohong BIAN ; Dan CAI ; Hui CAI ; Xiaohong CAI ; Zhanshan ZHA ; Bingyu CHEN ; Daqing CHEN ; Feng CHEN ; Guoan CHEN ; Haiming CHEN ; Jing CHEN ; Min CHEN ; Qing CHEN ; Shu CHEN ; Xi CHEN ; Jinfeng CHENG ; Xiaoling CHU ; Hongwang CUI ; Xin CUI ; Zhen DA ; Ying DAI ; Surong DENG ; Weiqun DONG ; Weimin FAN ; Ke FENG ; Danhui FU ; Yongshui FU ; Qi FU ; Xuemei FU ; Jia GAN ; Xinyu GAN ; Wei GAO ; Huaizheng GONG ; Rong GUI ; Geng GUO ; Ning HAN ; Yiwen HAO ; Wubing HE ; Qiang HONG ; Ruiqin HOU ; Wei HOU ; Jie HU ; Peiyang HU ; Xi HU ; Xiaoyu HU ; Guangbin HUANG ; Jie HUANG ; Xiangyan HUANG ; Yuanshuai HUANG ; Shouyong HUN ; Xuebing JIANG ; Ping JIN ; Dong LAI ; Aiping LE ; Hongmei LI ; Bijuan LI ; Cuiying LI ; Daihong LI ; Haihong LI ; He LI ; Hui LI ; Jianping LI ; Ning LI ; Xiying LI ; Xiangmin LI ; Xiaofei LI ; Xiaojuan LI ; Zhiqiang LI ; Zhongjun LI ; Zunyan LI ; Huaqin LIANG ; Xiaohua LIANG ; Dongfa LIAO ; Qun LIAO ; Yan LIAO ; Jiajin LIN ; Chunxia LIU ; Fenghua LIU ; Peixian LIU ; Tiemei LIU ; Xiaoxin LIU ; Zhiwei LIU ; Zhongdi LIU ; Hua LU ; Jianfeng LUAN ; Jianjun LUO ; Qun LUO ; Dingfeng LYU ; Qi LYU ; Xianping LYU ; Aijun MA ; Liqiang MA ; Shuxuan MA ; Xainjun MA ; Xiaogang MA ; Xiaoli MA ; Guoqing MAO ; Shijie MU ; Shaolin NIE ; Shujuan OUYANG ; Xilin OUYANG ; Chunqiu PAN ; Jian PAN ; Xiaohua PAN ; Lei PENG ; Tao PENG ; Baohua QIAN ; Shu QIAO ; Li QIN ; Ying REN ; Zhaoqi REN ; Ruiming RONG ; Changshan SU ; Mingwei SUN ; Wenwu SUN ; Zhenwei SUN ; Haiping TANG ; Xiaofeng TANG ; Changjiu TANG ; Cuihua TAO ; Zhibin TIAN ; Juan WANG ; Baoyan WANG ; Chunyan WANG ; Gefei WANG ; Haiyan WANG ; Hongjie WANG ; Peng WANG ; Pengli WANG ; Qiushi WANG ; Xiaoning WANG ; Xinhua WANG ; Xuefeng WANG ; Yong WANG ; Yongjun WANG ; Yuanjie WANG ; Zhihua WANG ; Shaojun WEI ; Yaming WEI ; Jianbo WEN ; Jun WEN ; Jiang WU ; Jufeng WU ; Aijun XIA ; Fei XIA ; Rong XIA ; Jue XIE ; Yanchao XING ; Yan XIONG ; Feng XU ; Yongzhu XU ; Yongan XU ; Yonghe YAN ; Beizhan YAN ; Jiang YANG ; Jiangcun YANG ; Jun YANG ; Xinwen YANG ; Yongyi YANG ; Chunyan YAO ; Mingliang YE ; Changlin YIN ; Ming YIN ; Wen YIN ; Lianling YU ; Shuhong YU ; Zebo YU ; Yigang YU ; Anyong YU ; Hong YUAN ; Yi YUAN ; Chan ZHANG ; Jinjun ZHANG ; Jun ZHANG ; Kai ZHANG ; Leibing ZHANG ; Quan ZHANG ; Rongjiang ZHANG ; Sanming ZHANG ; Shengji ZHANG ; Shuo ZHANG ; Wei ZHANG ; Weidong ZHANG ; Xi ZHANG ; Xingwen ZHANG ; Guixi ZHANG ; Xiaojun ZHANG ; Guoqing ZHAO ; Jianpeng ZHAO ; Shuming ZHAO ; Beibei ZHENG ; Shangen ZHENG ; Huayou ZHOU ; Jicheng ZHOU ; Lihong ZHOU ; Mou ZHOU ; Xiaoyu ZHOU ; Xuelian ZHOU ; Yuan ZHOU ; Zheng ZHOU ; Zuhuang ZHOU ; Haiyan ZHU ; Peiyuan ZHU ; Changju ZHU ; Lili ZHU ; Zhengguo WANG ; Jianxin JIANG ; Deqing WANG ; Jiongcai LAN ; Quanli WANG ; Yang YU ; Lianyang ZHANG ; Aiqing WEN
Chinese Journal of Trauma 2024;40(10):865-881
Patients with severe trauma require an extremely timely treatment and transfusion plays an irreplaceable role in the emergency treatment of such patients. An increasing number of evidence-based medicinal evidences and clinical practices suggest that patients with severe traumatic bleeding benefit from early transfusion of low-titer group O whole blood or hemostatic resuscitation with red blood cells, plasma and platelet of a balanced ratio. However, the current domestic mode of blood supply cannot fully meet the requirements of timely and effective blood transfusion for emergency treatment of patients with severe trauma in clinical practice. In order to solve the key problems in blood supply and blood transfusion strategies for emergency treatment of severe trauma, Branch of Clinical Transfusion Medicine of Chinese Medical Association, Group for Trauma Emergency Care and Multiple Injuries of Trauma Branch of Chinese Medical Association, Young Scholar Group of Disaster Medicine Branch of Chinese Medical Association organized domestic experts of blood transfusion medicine and trauma treatment to jointly formulate Chinese expert consensus on blood support mode and blood transfusion strategies for emergency treatment of severe trauma patients ( version 2024). Based on the evidence-based medical evidence and Delphi method of expert consultation and voting, 10 recommendations were put forward from two aspects of blood support mode and transfusion strategies, aiming to provide a reference for transfusion resuscitation in the emergency treatment of severe trauma and further improve the success rate of treatment of patients with severe trauma.
4.Anticoagulation after revascularization therapy for atrial fibrillation-related acute ischemic stroke:current status
Fang LI ; Tinghao GUO ; Kai WANG ; Zhijuan CHENG ; Weiping CHEN ; Min YIN ; Jianglong TU
Academic Journal of Naval Medical University 2024;45(11):1381-1389
Objective To investigate the anticoagulation status of patients with atrial fibrillation(AF)-related acute ischemic stroke(AIS)after revascularization therapy in the real world.Methods A retrospective study was performed on patients diagnosed as AIS and AF from Jan.2019 to Jan.2022 at The Second Affiliated Hospital of Nanchang University.Patients treated with intravenous thrombolysis(IVT),endovascular thrombectomy(EVT),or both were enrolled.Clinical information,timing of anticoagulation initiation,treatment regimens,and outcomes were documented and statistically analyzed.Additionally,a questionnaire was administered to the primary physicians to understand reasons for delaying or not initiating anticoagulation.Results A total of 189 patients with AF-related AIS met the screening criteria,including 86(45.5%)cases in the IVT group,63(33.3%)cases in the EVT group,and 40(21.2%)cases in the IVT+EVT group.The mean age of 189 patients was(72.90±9.23)years old.There were 93(49.2%)female patients.Anticoagulation was initiated within 14 d after revascularization therapy in 36.0%(68/189)of patients,with the highest rate in the IVT group(58.8%,40/68),followed by the EVT group(22.1%,15/68)and IVT+EVT group(19.1%,13/68).A significant difference was found in the proportion of patients receiving anticoagulation within 14 d among the 3 groups(P=0.020).Univariate analysis was performed on the clinical data of patients who initiated anticoagulation within 14 d after revascularization therapy(68 cases)and those who delayed or did not initiate anticoagulation(121 cases).The results showed that there were significant differences in the stroke history,National Institutes of Health stroke scale(NIHSS)score before revascularization therapy,Alberta Stroke Program early computed tomography score,modified Rankin scale(mRs)score before revascularization therapy,imaging characteristics(lesions near cortex,large infarction,severe stenosis or occlusion of major intracranial arteries),revascularization therapy method,NIHSS score 3 d after revascularization therapy,and intracranial hemorrhagic transformation after revascularization therapy between the 2 groups(all P<0.05).Multivariate logistic regression analysis indicated that higher NIHSS scores 3 d after revascularization therapy(odds ratio[OR]=1.113,95%confidence interval[CI]1.053-1.176,P<0.001)and the presence of intracranial hemorrhage after revascularization therapy(OR=6.098,95%CI 2.004-18.193,P=0.001)were significant factors that contraindicated the initiation of anticoagulation.Large infarcts(40.8%),infarct location(35.8%),and hemorrhagic transformation after stroke(40.8%)were the common reasons cited by physicians for not initiating anticoagulation.In the 90-d prognosis of patients with AF-related AIS,6 patients had bleeding events,and 116 patients had a good prognosis(mRS score of 0-2).The 90-d good prognosis rate in the initiated anticoagulation group within 14 d after revascularization therapy(89.7%,61/68)was significantly higher than that in the delayed or non-anticoagulation group(45.5%,55/121;P<0.001).Conclusion For patients with AF-related AIS who receive IVT,EVT or IVT+EVT,it is safe to initiate anticoagulation early after revascularization therapy,but the timing of anticoagulation in most patients is later than the currently recommended anticoagulation timing.
5.Research and Progress on the Association of Porphyromonas gingivalis with Lung Cancer
YIN YUANYUAN ; ZHANG JIE ; GUO QIANG ; SHEN CHENG
Chinese Journal of Lung Cancer 2024;27(10):799-804
Porphyromonas gingivalis is a key pathogenic microorganism that triggers periodontitis.It is closely asso-ciated with oral diseases such as chronic periodontitis and recently found to have a significant correlation with the occurrence,progression,and prognosis of cancer.As the leading malignant tumor in terms of both incidence and mortality worldwide,lung cancer has always been a focus and hotspot of research.The causes of lung cancer are complex and involve multiple factors,in-cluding smoking,occupational factors,air pollution,ionizing radiation,diet and nutrition,genetic factors,etc.Researchers have also begun to pay attention to the relationship between oral microbiota and overall health,especially the link with lung cancer.The article summarizes the latest advancements in research on Porphyromonas gingivalis in lung cancer,primarily encompassing etiology and pathogenic mechanisms,and explores its potential as a therapeutic target for lung cancer,aiming to provide new insights and directions for lung cancer prevention and treatment strategies.
6.A multicenter study of neonatal stroke in Shenzhen,China
Li-Xiu SHI ; Jin-Xing FENG ; Yan-Fang WEI ; Xin-Ru LU ; Yu-Xi ZHANG ; Lin-Ying YANG ; Sheng-Nan HE ; Pei-Juan CHEN ; Jing HAN ; Cheng CHEN ; Hui-Ying TU ; Zhang-Bin YU ; Jin-Jie HUANG ; Shu-Juan ZENG ; Wan-Ling CHEN ; Ying LIU ; Yan-Ping GUO ; Jiao-Yu MAO ; Xiao-Dong LI ; Qian-Shen ZHANG ; Zhi-Li XIE ; Mei-Ying HUANG ; Kun-Shan YAN ; Er-Ya YING ; Jun CHEN ; Yan-Rong WANG ; Ya-Ping LIU ; Bo SONG ; Hua-Yan LIU ; Xiao-Dong XIAO ; Hong TANG ; Yu-Na WANG ; Yin-Sha CAI ; Qi LONG ; Han-Qiang XU ; Hui-Zhan WANG ; Qian SUN ; Fang HAN ; Rui-Biao ZHANG ; Chuan-Zhong YANG ; Lei DOU ; Hui-Ju SHI ; Rui WANG ; Ping JIANG ; Shenzhen Neonatal Data Network
Chinese Journal of Contemporary Pediatrics 2024;26(5):450-455
Objective To investigate the incidence rate,clinical characteristics,and prognosis of neonatal stroke in Shenzhen,China.Methods Led by Shenzhen Children's Hospital,the Shenzhen Neonatal Data Collaboration Network organized 21 institutions to collect 36 cases of neonatal stroke from January 2020 to December 2022.The incidence,clinical characteristics,treatment,and prognosis of neonatal stroke in Shenzhen were analyzed.Results The incidence rate of neonatal stroke in 21 hospitals from 2020 to 2022 was 1/15 137,1/6 060,and 1/7 704,respectively.Ischemic stroke accounted for 75%(27/36);boys accounted for 64%(23/36).Among the 36 neonates,31(86%)had disease onset within 3 days after birth,and 19(53%)had convulsion as the initial presentation.Cerebral MRI showed that 22 neonates(61%)had left cerebral infarction and 13(36%)had basal ganglia infarction.Magnetic resonance angiography was performed for 12 neonates,among whom 9(75%)had involvement of the middle cerebral artery.Electroencephalography was performed for 29 neonates,with sharp waves in 21 neonates(72%)and seizures in 10 neonates(34%).Symptomatic/supportive treatment varied across different hospitals.Neonatal Behavioral Neurological Assessment was performed for 12 neonates(33%,12/36),with a mean score of(32±4)points.The prognosis of 27 neonates was followed up to around 12 months of age,with 44%(12/27)of the neonates having a good prognosis.Conclusions Ischemic stroke is the main type of neonatal stroke,often with convulsions as the initial presentation,involvement of the middle cerebral artery,sharp waves on electroencephalography,and a relatively low neurodevelopment score.Symptomatic/supportive treatment is the main treatment method,and some neonates tend to have a poor prognosis.
7.Clinical study of glecaprevir/pibrentasvir in the treatment of patients with hepatitis C virus and human immunodeficiency virus co-infection
Jun RUAN ; Guo-Xian KOU ; Heng YIN ; Rui SU ; Cheng-Bin YANG
Chinese Journal of Infection Control 2024;23(5):563-567
Objective To analyze the clinical efficacy and safety of glecaprevir/pibrentasvir in the treatment of pa-tients with hepatitis C virus(HCV)and human immunodeficiency virus(HIV)co-infection,and provide scientific basis for clinical treatment.Methods 89 initially treated non-cirrhotic patients with HCV/HIV co-infection in a hospital of Butuo County of Liangshan Prefecture from January 2021 to January 2022 were selected.All patients re-ceived glecaprevir/pibrentasvir treatment for 8 weeks and were followed up for 12 weeks.Virological response rate at the end-of-treatment and sustained virological response rate after 12 weeks(SVR12)of treatment as well as oc-currence of adverse reaction were recorded.Results Among 89 initially treated non-cirrhotic patients with HCV/HIV co-infection,most were middle-aged and young married men(n=79,88.8%).HIV was mainly transmitted through sexual contact(n=62,69.7%)and intravenous drug use(n=27,30.3%).The most common HCV geno-types were genotype 1b(n=33,37.1%)and genotype 3b(n=25,28.1%).All patients completed 8 weeks of treatment successfully and HCV RNA load at the end of treatment was below the detection limit(<25 IU/mL).Eight patients failed to complete the follow-up,and the remaining 81(100%)patients achieved a sustained virologic re-sponse.There were no serious adverse reactions during the observation period,but 11 patients had mild adverse re-actions.Conclusion The 8-week treatment regimen of glecaprevir/pibrentasvir for non-cirrhotic patients with geno-type 1,3,and 6 HCV/HIV co-infection can achieve 100%SVR12,with high safety and tolerability,which can be used as a good choice for clinical treatment of these patients.
8.Influence of curative-intent resection with textbook outcomes on long-term prognosis of gall-bladder carcinoma: a national multicenter study
Zhipeng LIU ; Zimu LI ; Yule LUO ; Xiaolin ZHAO ; Jie BAI ; Yan JIANG ; Yunfeng LI ; Chao YU ; Fan HUANG ; Zhaoping WU ; Jinxue ZHOU ; Dalong YIN ; Rui DING ; Wei GUO ; Yi ZHU ; Wei CHEN ; Kecan LIN ; Ping YUE ; Yao CHENG ; Haisu DAI ; Dong ZHANG ; Zhiyu CHEN
Chinese Journal of Digestive Surgery 2024;23(7):926-933
Objective:To investigate the influence of curative-intent resection with textbook outcomes of liver surgery (TOLS) on long-term prognosis of gallbladder carcinoma (GBC).Methods:The retrospective cohort study was conducted. The clinicopathological data of 824 patients with GBC in the national multicenter database of Biliary Surgery Group of Elite Group of Chinese Journal of Digestive Surgery, who were admitted to 15 medical centers from January 2014 to January 2021, were collected. There were 285 males and 539 females, aged (62±11)years. According to the evalua-tion criteria of TOLS, patients were divided into those who achieved TOLS and those who did not achieve TOLS. Measurement data with normal distribution were represented as Mean± SD, and com-parison 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. Comparison of ordinal data were conduc-ted using the Mann-Whitney U test. The Kaplan-Meier method was used to calculate survival rate and draw survival curve, and the Log-rank test was used for survival analysis. The COX stepwise regression model with backward Wald method was used for univariate and multivariate analyses. Results:(1) Achievement of TOLS. Of the 824 patients undergoing curative-intent resection for GBC, there were 510 cases achieving TOLS and 314 cases not achieving TOLS. (2) Follow-up. Of the 824 patients undergoing curative-intent resection for GBC, after excluding 112 deaths within 90 days after discharge, 712 cases were included for the survival analysis. The median follow-up time, median overall survival time and 5-year overall survival rate of the 510 patients achieving TOLS were 22.1(11.4,30.1)months, 47.6(30.6,64.6)months and 47.5%. The median follow-up time, median overall survival time and 5-year overall survival rate of the 202 patients not achieving TOLS were 14.0(6.8,25.5)months, 24.3(20.0,28.6)months and 21.0%. There was a significant difference in overall survival between patients achieving TOLS and patients not achieving TOLS ( χ2=58.491, P<0.05). (3) Analysis of factors influencing prognosis of patients. Results of multivariate analysis showed that TOLS, carcinoembryonic antigen (CEA), CA19-9, poorly differentiation of tumor, T2 stage of eighth edition of American Joint Committee on Cancer (AJCC) staging, T3 and T4 stage of eighth edition of AJCC staging, N1 stage of the eighth edition of AJCC staging, N2 stage of the eighth edition of AJCC staging, adjuvant therapy were independent factors influencing overall survival time of patients undergoing curative-intent resection for GBC ( hazard ratio=0.452, 1.479, 1.373, 1.612, 1.455, 1.481, 1.835, 1.978, 0.538, 95% c onfidence interval as 0.352-0.581, 1.141-1.964, 1.052-1.791, 1.259-2.063, 1.102-1.920, 1.022-2.147, 1.380-2.441, 1.342-2.915, 0.382-0.758, P<0.05). Conclusion:Patients under-going curative-intent resection for GBC with TOLS can achieve better long-term prognosis.
9.Percutaneous transluminal pulmonary angioplasty for chronic thromboembolic pulmonary hypertension:a case report
Yin-Jian YANG ; Fan GUO ; Yu-Ping ZHOU ; Xi-Qi XU ; Zhi-Cheng JING
Chinese Journal of Interventional Cardiology 2023;31(12):951-954
This paper reports that one patient with chronic thromboembolic pulmonary hypertension was significantly improved and close to cure after staged treatment with percutaneous transluminal pulmonary angioplasty on the basis of anticoagulant therapy and pulmonary arterial hypertension-targeted medical therapy.The mean pulmonary artery pressure decreased from 51 mmHg to 20 mmHg.The World Health Organization(WHO)functional class improved from Ⅲ to Ⅰ.This case provides a reference for the treatment of chronic thromboembolic pulmonary hypertension in clinical practice.
10.Protective effect of heme chloride on hypoxia-induced tissue injury in mice
Qianwen GUO ; Ziyue YIN ; Junfei CHENG ; Xiaojing ZHANG ; Rong WANG ; Wenbin LI
Journal of Central South University(Medical Sciences) 2023;48(10):1437-1444
Objective:Heme chloride(Hemin)is an in vitro purified form of natural heme and an important raw material for anti-anemia and antitumor drugs.This study aims to analyze the protective effect of Hemin on tissue damage in low-pressure oxygen chamber simulated plateau hypoxic mice,and explore its role in anti-plateau hypoxia. Methods:Thirty male BALB/c mice were randomly divided into a blank group,a positive drug group(acetazolomide,200 mg/kg),a Hemin low-dose group(15 mg/kg),a Hemin medium-dose group(30 mg/kg),and a Hemin high-dose group(60 mg/kg)with intraperitoneal injection.The anti-hypoxic activity of Hemin was explored by atmospheric closed hypoxia experiment and the optimal dose was screened.Thirty-six male BALB/c mice were randomly divided into a blank group,a hypoxia group,a positive drug group,and a Hemin high-dose group.The plasma inflammatory factor levels and oxidative stress indicators malondialdehyde(MDA),glutataione(GSH),and superoxide dismutase(SOD)levels of myocardium,brain,lung,and liver tissues were measured in different groups with hypoxia for 24 h.The degree of histopathological damage of mice was observed with HE staining.The degree of protection of Hemin against tissue hypoxia injury was detected with the hypoxia probe piperidazole. Results:Compared with the blank group,the survival time of mice in the positive drug group,the Hemin medium-dose group,and high-dose group was significantly extended(all P<0.05),with the highest prolongation rate in the Hemin high-dose group.Compared with the hypoxia group,mice in the Hemin high-dose group showed a significant increase in SOD level and GSH content of brain tissue,and a significant decrease in MDA content of lung tissue(all P<0.05).The results of HE staining and hypoxia probe showed that Hemin had a significant protective effect on the damage of liver,heart,brain and lung tissues of mice with hypoxia,and the most obvious effect on that of the brain tissue. Conclusion:Hemin has an effect of improvement on oxidative stress and inflammatory response caused by hypoxia,and has obvious protective effect on tissue damage caused by hypoxia.

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