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The co-transport of Cd(Ⅱ) and nZnO in saturated soil packed column:effects of ionic strength and pH
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作者 Min Liao Guo Bin +4 位作者 Yixin Luo Yuhao Zhang Kangyou Hu Xiongxiong Lu Xiaomei Xie 《Acta Geochimica》 EI CAS CSCD 2024年第1期97-109,共13页
The rapid development and widespread use of ZnO nanoparticles(nZnO) in various industries have raised concerns about their potential environmental impact.Therefore,understanding the fate and role of nZnO in the natura... The rapid development and widespread use of ZnO nanoparticles(nZnO) in various industries have raised concerns about their potential environmental impact.Therefore,understanding the fate and role of nZnO in the natural environment is crucial for mitigating their hazardous effects on the environment and human safety.The purpose of the present study was to provide scientific support for understanding and eliminating the joint risk of nanoparticle and heavy metal pollution in the soil environment by revealing the co-transport characteristics of Cd(Ⅱ) and ZnO nanoparticles(nZnO) in soil under different ionic strength(IS) and pH.The impacts of different IS and pH on the co-transport of Cd(Ⅱ) and nZnO in a20 cm long with an inner diameter of 2.5 cm acrylic column packed with 10 cm high soil samples were investigated in the present study.In the above system,a500 μg L^(-1) Cd(Ⅱ) loaded nZnO suspension pulse with varying IS or pH was introduced into the soil column for leaching over 5 PVs,followed up by 5 PVs background solutions without nZnO.The IS was 1,10,or 50 mM NaCl,with pH6,or the pH was 6,7 or 8 with 1 mM NaCl.Meanwhile,Sedimentation experiments for nZnO,adsorption of Cd(Ⅱ) on soil,and nZnO,DLVO theory calculation for the same background condition were conducted.The presence of nZnO significantly increased the mobility of Cd(Ⅱ) as a result of its strong adsorption capacity for nZnO-associated Cd(Ⅱ).However,with the increase of IS,the co-transport of nZnO and Cd(Ⅱ) was decreased and the retention of nZnO in the soil column due to more nZnO attended to aggregate and sediment during the transport and the decrease in the adsorption capacity of nZnO for Cd(Ⅱ) by competition of Na^(+).When pH was 6,7,and 8,the co-transport of nZnO and Cd(Ⅱ) increased with higher pH due to the lower electrostatic attraction between nZnO and soil under higher pH.Meanwhile,the DLVO theory was fitted to describe the above co-transport process of nZnO and Cd(Ⅱ).More attention should be paid to the presence of nZnO on the migration of Cd(Ⅱ) in the natural soil to control the potential risk of nanoparticles and heavy metals to the environment.The risk of co-transport of nZnO and Cd(Ⅱ) might be controlled by adjusting IS and pH in the soil solution. 展开更多
关键词 ZNO NANOPARTICLES Cadimium SOIL co-transport
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Sodium glucose co-transporter 2 inhibition reduces succinate levels in diabetic mice 被引量:5
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作者 Lakshini Y Herat Natalie C Ward +4 位作者 Aaron L Magno Elizabeth P Rakoczy Marcio G Kiuchi Markus P Schlaich Vance B Matthews 《World Journal of Gastroenterology》 SCIE CAS 2020年第23期3225-3235,共11页
BACKGROUND Type 1 diabetes(T1D) is associated with major chronic microvascular complications which contribute significantly to diabetes associated morbidity.The protein primarily responsible for glucose reabsorption i... BACKGROUND Type 1 diabetes(T1D) is associated with major chronic microvascular complications which contribute significantly to diabetes associated morbidity.The protein primarily responsible for glucose reabsorption in the kidney is sodium glucose co-transporter 2(SGLT2). Presently, SGLT2 inhibitors are widely used in diabetic patients to improve blood glucose levels and prevent cardiovascular and renal complications. Given the broad therapeutic application of SGLT2 inhibitors, we hypothesised that SGLT2 inhibition may exert its protective effects via alterations of the gut microbiome and tested this in a type 1 diabetic mouse model of diabetic retinopathy.AIM To determine whether the treatment with two independent SGLT2 inhibitors affects gut health in a type 1 diabetic mouse model.METHODS The SGLT2 inhibitors empagliflozin or dapagliflozin(25 mg/kg/d) or vehicle dimethylsulfoxide(DMSO) were administered to C57 BL/6 J, Akita, Kimba and Akimba mice at 10 wk of age for 8 wk via their drinking water. Serum samples were collected and the concentration of succinate and the short chain fatty acid(SCFA) butyric acid was measured using gas chromatography-mass spectrometry. Enzyme-linked immunosorbent assay(ELISA) was performed to determine the concentration of insulin and leptin. Furthermore, the norepinephrine content in kidney tissue was determined using ELISA. Pancreatic tissue was collected and stained with haematoxylin and eosin and analysed using brightfield microscopy.RESULTS Due to the presence of the Akita allele, both Akita and Akimba mice showed a reduction in insulin production compared to C57 BL/6 J and Kimba mice.Furthermore, Akita mice also showed the presence of apoptotic bodies within the pancreatic islets. The acinar cells of Akita and Akimba mice showed swelling which is indicative of acute injury or pancreatitis. After 8 wk of SGLT2 inhibition with dapagliflozin, the intermediate metabolite of gut metabolism known as succinate was significantly reduced in Akimba mice when compared to DMSO treated mice. In addition, empagliflozin resulted in suppression of succinate levels in Akimba mice. The beneficial SCFA known as butyric acid was significantly increased in Akita mice after treatment with dapagliflozin when compared to vehicle treated mice. The norepinephrine content in the kidney was significantly reduced with both dapagliflozin and empagliflozin therapy in Akita mice and was significantly reduced in Akimba mice treated with empagliflozin.In non-diabetic C57 BL/6 J and Kimba mice, serum leptin levels were significantly reduced after dapagliflozin therapy.CONCLUSION The inhibition of SGLT2 reduces the intermediate metabolite succinate, increases SCFA butyric acid levels and reduces norepinephrine content in mouse models of T1 D. Collectively, these improvements may represent an important mechanism underlying the potential benefits of SGLT2 inhibition in T1 D and its complications. 展开更多
关键词 Sodium glucose co-transporter inhibitors Sodium glucose co-transporter 2 Diabetes Diabetic retinopathy MOUSE Gut microbiota Empagliflozin DAPAGLIFLOZIN SUCCINATE Akimba
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Analgesic effect of intrathecal bumetanide is accompanied by changes in spinal sodium-potassium-chloride co-transporter 1 and potassium-chloride co-transporter 2 expression in a rat model of incisional pain 被引量:2
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作者 Yanbing He Shiyuan Xu +1 位作者 Junjie Huang Qingjuan Gong 《Neural Regeneration Research》 SCIE CAS CSCD 2014年第10期1055-1062,共8页
Accumulating evidence has demonstrated that the sodium-potassium-chloride co-transporter 1 and potassium-chloride co-transporter 2 have a role in the modulation of pain transmission at the spinal level through chlorid... Accumulating evidence has demonstrated that the sodium-potassium-chloride co-transporter 1 and potassium-chloride co-transporter 2 have a role in the modulation of pain transmission at the spinal level through chloride regulation in the pain pathway and by effecting neuronal excitability and pain sensitization. The present study aimed to investigate the analgesic effect of the speciifc sodium-potassium-chloride co-transporter 1 inhibitor bumetanide, and the change in spinal sodium-potassium-chloride co-transporter 1 and potassium-chloride co-transporter 2 expression in a rat model of incisional pain. Results showed that intrathecal bumetanide could decrease cumulative pain scores, and could increase thermal and mechanical pain thresholds in a rat model of incisional pain. Sodium-potassium-chloride co-transporter 1 expression in-creased in neurons from dorsal root ganglion and the deep laminae of the ipsilateral dorsal horn following incision. By contrast, potassium-chloride co-transporter 2 expression decreased in neurons of the deep laminae from the ipsilateral dorsal horn. These ifndings suggest that spinal sodium-potassium-chloride co-transporter 1 expression was up-regulated and spinal potassi-um-chloride co-transporter 2 expression was down-regulated following incision. Intrathecal bumetanide has analgesic effects on incisional pain through inhibition of sodium-potassi-um-chloride co-transporter 1. 展开更多
关键词 nerve regeneration sodium-potassium-chloride co-transporter 1 potassium-chloride co-transporter 2 BUMETANIDE spinal cord dorsal root ganglion incision model postoperative pain neural regeneration
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Role of sodium-glucose co-transporter-2 inhibitors in the management of nonalcoholic fatty liver disease 被引量:3
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作者 Anastasia Kontana Konstantinos Tziomalos 《World Journal of Gastroenterology》 SCIE CAS 2019年第28期3664-3668,共5页
Nonalcoholic fatty liver disease (NAFLD) is the most prevalent cause of chronic liver disease worldwide. NAFLD is considerably more frequent in patients with type 2 diabetes mellitus (T2DM) than in the general populat... Nonalcoholic fatty liver disease (NAFLD) is the most prevalent cause of chronic liver disease worldwide. NAFLD is considerably more frequent in patients with type 2 diabetes mellitus (T2DM) than in the general population and is also more severe histologically in this group. Sodium-glucose co-transporter-2 (SGLT2) inhibitors, the newest class of antidiabetic agents, appear to represent a promising option for the management of NAFLD in patients with T2DM. In a number of studies, treatment with SGLT2 inhibitors resulted in a reduction in hepatic steatosis and in transaminase levels. However, existing studies are small, their follow-up period was short and none evaluated the effects of SGLT2 inhibitors on liver histology. Accordingly, larger studies are needed to verify these preliminary results and define the role of SGLT2 inhibitors in the treatment of NAFLD in patients with T2DM. 展开更多
关键词 NONALCOHOLIC fatty liver disease Type 2 diabetes mellitus Sodium-glucose co-transporter-2 INHIBITORS STEATOSIS Fibrosis TRANSAMINASES
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Sodium-glucose co-transporter 2 inhibitors induced euglycemic diabetic ketoacidosis within four days of initiation 被引量:1
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作者 Almurtada Razok Fateen Ata +1 位作者 Sara Mohamed Ibrahim Ahmed Dabia Hamad S H Al Mohanadi 《World Journal of Diabetes》 SCIE 2022年第3期272-274,共3页
Euglycemic diabetic ketoacidosis(EDKA)is a well-known complication of sodium-glucose co-transporter 2 inhibitors,and many cases with variable onset following the initiation of these agents are reported before,with a m... Euglycemic diabetic ketoacidosis(EDKA)is a well-known complication of sodium-glucose co-transporter 2 inhibitors,and many cases with variable onset following the initiation of these agents are reported before,with a median onset of approximately 2 wk.This letter discusses a 45-year-old lady who initially presented with ischemic stroke but developed EDKA 4 d after starting empagliflozin,a rare occurrence.The patient had severe metabolic acidosis that necessitated admission into the intensive care unit.Prompt discontinuation of empagliflozin and DKA management resulted in clinical recovery. 展开更多
关键词 Euglycemic diabetic ketoacidosis Sodium-glucose co-transporter 2 inhibitors Type 2 diabetes mellitus Empagliflozin
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Euglycemic diabetic ketoacidosis:A rare but serious side effect of sodium-glucose co-transporter 2 inhibitors
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作者 Nenad Lakušić Ivana Sopek Merkaš +1 位作者 Ana Marija Slišković Dora Cerovec 《World Journal of Cardiology》 2022年第10期561-564,共4页
Sodium-glucose co-transporter 2(SGLT2)inhibitors are an insulin-independent class of oral antihyperglycemic medication and from recently established therapy in chronic heart failure patients.A rare,but potentially lif... Sodium-glucose co-transporter 2(SGLT2)inhibitors are an insulin-independent class of oral antihyperglycemic medication and from recently established therapy in chronic heart failure patients.A rare,but potentially life-threatening complication of SGLT2 inhibitor use is euglycemic diabetic ketoacidosis.We described a case of a middle-aged male patient with type 2 diabetes who developed metabolic ketoacidosis after a few days of empagliflozin administration.SGLT2 inhibitor related ketoacidosis presents with euglycemia or only modestly elevated glucose blood concentrations,which causes delayed detection and treatment of ketoacidosis.There are multiple possible risk factors and mechanism that might contribute to the pathogenesis of ketoacidosis.It is implied that SGLT2 inhibitor use and prescription by non-diabetologists(cardiologists,nephrologists,family physicians,etc.)will continue to grow in the future.It is important to inform the general cardiac public about this rare but serious side effect of SGLT2 inhibitors. 展开更多
关键词 Sodium-glucose co-transporter 2 inhibitors Euglycemic diabetic ketoacidosis Chronic heart failure
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Surface charge property governing co-transport of illite colloids and Eu(Ⅲ) in saturated porous media
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作者 Xiaoyan Wei Duoqiang Pan +6 位作者 Qi Tan Xinyi Shi Junjun Hou Qingfeng Tang Zhen Xu Wangsuo Wu Bin Ma 《Chinese Chemical Letters》 SCIE CAS CSCD 2023年第11期248-254,共7页
The transport of colloids and radionuclides is sophisticated because of the variety of charge properties between colloidal particles and host subsurface media, which causes great difficulty in establishing a reliable ... The transport of colloids and radionuclides is sophisticated because of the variety of charge properties between colloidal particles and host subsurface media, which causes great difficulty in establishing a reliable model of radionuclides migration by taking the colloid phase into consideration. In this work,the co-transport of illite colloids(IC) and Eu(Ⅲ) in the quartz sand and iron-coated sand porous media was investigated by column experiments to address the predominant mechanism of charge properties on co-transport. Results showed that Eu(Ⅲ) transport was driven by the illite colloids and electrostatic interaction was critical in governing the co-transport patterns. The promotion of Eu(Ⅲ) transport by IC was attenuated in the iron-coated sand systems;more IC-Eu(Ⅲ) complexes were retained uniformly in the column. The pore throat shrinkage caused by electrostatic attachment between aggregated IC and iron oxides exacerbated the physical straining and size exclusion effect of IC-Eu(Ⅲ) complexes. An aggravated irreversible retention of IC-Eu(Ⅲ) was detected in iron-coated sand column due to the electrostatic attraction of IC-Eu(Ⅲ) to host media. The findings are essential for improving the understanding on the potential transport, retention and release risk of colloids associated radionuclides, and imply that the positively charged permeable reactive barrier is an effective strategy to reduce the transport risk of colloid associated radionuclides. 展开更多
关键词 Illite colloids Eu(Ⅲ) co-transport RELEASE Charge property
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技术与制度协同演化与我国交通运输治理能力现代化——基于纵向案例研究 被引量:3
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作者 向鹏成 高璐 贾富源 《北京交通大学学报(社会科学版)》 CSSCI 北大核心 2024年第1期96-104,共9页
以国家高速公路联网不停车收费工程的演化变迁历程为纵向案例,基于技术与制度关系理论研究我国交通运输行业发展的底层逻辑和提升路径。研究发现:我国交通运输行业的深刻变革不是传统线性思维下技术或制度的单向决定论,而是在技术与制... 以国家高速公路联网不停车收费工程的演化变迁历程为纵向案例,基于技术与制度关系理论研究我国交通运输行业发展的底层逻辑和提升路径。研究发现:我国交通运输行业的深刻变革不是传统线性思维下技术或制度的单向决定论,而是在技术与制度的协同演化中推进我国交通运输治理能力现代化。即决策者能够基于已有的制度、组织、规则、经验及认知来建构技术发展的路径,而技术也使得制度的变迁成为可能,二者相互影响,互为选择。为进一步提升我国交通运输行业治理能力,既要发挥技术对组织调整和制度变革的潜力,又要强化制度对技术发展的选择、规范和引导作用,从而,在技术与制度的协同演化中加快交通强国建设步伐。 展开更多
关键词 技术 制度 协同演化 ETC示范工程 交通治理
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基于协同理论的交通建设工程高质量发展机制研究
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作者 侯新宇 钱夏清 +2 位作者 陈子璇 林军 葛慧敏 《山西建筑》 2024年第18期109-111,139,共4页
交通高质量发展研究主要集中于交通运输可持续发展政策、评价原则以及评价指标体系,对交通建设工程评价体系有待拓展研究。依托2011年—2020年江苏省交通建设工程相关指标数据,选取评价指标,构建交通建设工程高质量发展评价指标体系,基... 交通高质量发展研究主要集中于交通运输可持续发展政策、评价原则以及评价指标体系,对交通建设工程评价体系有待拓展研究。依托2011年—2020年江苏省交通建设工程相关指标数据,选取评价指标,构建交通建设工程高质量发展评价指标体系,基于耦合度与耦合协调度理论采用Excel得出耦合度以及耦合协调度,进行交通建设工程与地方政府、市场企业与社会民众的耦合协调分析。结果表明,2011年—2020年江苏省交通建设工程与市场企业和社会民众之间耦合度最好,二者之间均经历了由失调到协调的过程。对交通建设工程高质量发展提供有效路径与政策建议,为交通强国建设提供理论指导与科学依据。 展开更多
关键词 耦合度 耦合协调度 交通建设 高质量发展
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射血分数保留的心力衰竭合并心房颤动的诊疗进展 被引量:2
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作者 乔荞 张艳 +2 位作者 赵倩 孙有海 邓爱云 《中国心血管杂志》 北大核心 2024年第3期274-277,共4页
心房颤动(AF)与射血分数保留的心力衰竭(HFpEF)常常并存,HFpEF患者中AF发病率约为40%~60%,二者通过不同的机制相互影响,及时的诊断及治疗对此类患者很有必要。本文旨在探讨AF对HFp EF诊断和预后的影响,以及HFp EF合并AF的最新治疗手段。
关键词 射血分数保留的心力衰竭 心房颤动 钠-葡萄糖共转运蛋白2抑制剂 导管消融术
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多孔介质中多环芳烃与细菌共运移数值模拟
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作者 王瑾彤 曾献奎 吴吉春 《南水北调与水利科技(中英文)》 CAS CSCD 北大核心 2024年第1期122-130,共9页
地下水中微生物等胶体对多环芳烃的运移具有促进作用,为进行多环芳烃污染的精准、高效修复,需要建立准确、可靠的多环芳烃与细菌胶体共运移数值模拟模型。研究基于室内砂柱荧蒽运移系列实验,采用Hydrus中Colloid-Facilitated Solute Tra... 地下水中微生物等胶体对多环芳烃的运移具有促进作用,为进行多环芳烃污染的精准、高效修复,需要建立准确、可靠的多环芳烃与细菌胶体共运移数值模拟模型。研究基于室内砂柱荧蒽运移系列实验,采用Hydrus中Colloid-Facilitated Solute Transport(C-Ride)模块构建荧蒽与细菌FA1共运移数值模型,并采用马尔科夫链蒙特卡洛方法(Markov Chain Monte Carlo,MCMC)进行模型参数不确定性分析,定量刻画荧蒽在水动力和微生物胶体作用下的运移过程。结果表明:基于Hydrus C-Ride模块和MCMC参数不确定性分析,能够准确地刻画荧蒽和细菌FA1的共运移过程;细菌FA1促进了荧蒽在多孔介质中的迁移速度,且导致荧蒽在多孔介质中运移回收率的增加,即由55.06%提升至76.16%,其中吸附至可移动胶体迁移和随水流迁移贡献的回收率分别为41.46%、34.69%。研究成果对于指导地下水污染微生物修复方案的优化设计具有重要的理论和现实意义。 展开更多
关键词 细菌胶体 荧蒽 共运移 数值模拟 马尔科夫链蒙特卡洛方法
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钠-葡萄糖共转运蛋白2抑制剂对急性心肌梗死合并2型糖尿病患者的安全性及有效性评价
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作者 牛宇飞 王悦 +6 位作者 孙帅锋 王申 刘睿方 李法东 赵文欣 郭鹏熔 吴小凡 《心肺血管病杂志》 CAS 2024年第8期806-811,共6页
目的:探究钠-葡萄糖共转运蛋白2抑制剂(sodium-glucose co-transporter-2 inhibitor,SGLT2i)对合并2型糖尿病(type 2 diabetes mellitus,T2DM)的急性心肌梗死(acute myocardial infarction,AMI)患者的疗效及安全性。方法:研究纳入2018年... 目的:探究钠-葡萄糖共转运蛋白2抑制剂(sodium-glucose co-transporter-2 inhibitor,SGLT2i)对合并2型糖尿病(type 2 diabetes mellitus,T2DM)的急性心肌梗死(acute myocardial infarction,AMI)患者的疗效及安全性。方法:研究纳入2018年1月至2023年1月,在首都医科大学附属北京安贞医院行PCI手术且合并T2DM的AMI患者共2 170例,其中357例患者使用SGLT2i,并根据患者出院带药是否使用SGLT2i分成两组:SGLT2i组和常规降糖组,通过倾向性匹配法进行1:1匹配。本研究主要有效性终点事件为支架术后12个月内心血管不良事件(major adverse cardiovascular events,MACE),包含全因死亡、非致命心肌梗死、或缺血相关血运重建,主要安全终点事件为严重出血事件。结果:通过倾向评分匹配成功357对,两组患者基线特征基本一致,差异无统计学意义。研究平均随访(11.7±1.4)个月。与常规降糖组相比,达格列净组的主要有效性终点事件(HR=0.47,95%CI 0.27~0.81,P=0.006)以及次要终点事件中缺血相关血运重建(HR=0.53,95%CI:0.30~0.93,P=0.026)的发生率较低。两组的主要安全性终点事件(HR=0.72,95%CI:0.29~1.81,P=0.492)、全因死亡(HR=0.49,95%CI:0.23~1.06,P=0.069)和心肌梗死(HR=0.62,95%CI:0.32~1.18,P=0.142)发生率差异未见统计学意义。结论:SGLT2i可以降低合并2型糖尿病的急性心肌梗死患者的MACE、心肌梗死或缺血相关血运重建发生率,同时并不增加安全事件风险。 展开更多
关键词 钠-葡萄糖共转运蛋白2抑制剂 急性心急梗死 2型糖尿病
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《2023年欧洲心脏病学会心力衰竭指南》更新解读 被引量:1
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作者 张鑫 王利宏 《心电与循环》 2024年第1期9-14,共6页
《2023欧洲心脏病学会心力衰竭(下称心衰)指南》(下称《2023ESC指南》)更新纳入了自2021版指南之后的众多最新的循证医学证据,包括多项大型随机对照试验和荟萃分析。本次更新内容主要包括慢性心衰、急性心衰及心衰合并症三大方面。慢性... 《2023欧洲心脏病学会心力衰竭(下称心衰)指南》(下称《2023ESC指南》)更新纳入了自2021版指南之后的众多最新的循证医学证据,包括多项大型随机对照试验和荟萃分析。本次更新内容主要包括慢性心衰、急性心衰及心衰合并症三大方面。慢性心衰方面,钠-葡萄糖共转运蛋白2(SGLT2)抑制剂的出现为射血分数轻度降低的心衰及射血分数保留的心衰治疗带来了重要选择,成为目前唯一被推荐用于治疗全射血分数心衰的药物。急性心衰住院患者出院前及出院后前6周内采取强化策略,早期启动循证药物并快速滴定治疗,以减少心衰再入院和死亡率。对于2型糖尿病和慢性肾脏疾病患者,推荐使用SGLT2抑制剂及醛固酮受体拮抗剂类药物非奈利酮以降低心衰住院或心血管死亡的风险,静脉补铁治疗用于铁缺乏合并心衰患者以改善心衰症状和生活质量。《2023 ESC指南》更新对于心衰防治具有重大的指导性意义。 展开更多
关键词 心力衰竭 欧洲心脏病学会指南 合并症 预防治疗 钠-葡萄糖共转运蛋白2抑制剂
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考虑货运方式和客运硬时间窗的地铁客货共车运输优化 被引量:2
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作者 邸振 曹楚悦 肖妍星 《交通运输工程与信息学报》 2024年第1期150-159,共10页
鉴于地铁网络在解决大城市居民出行问题上的成功实践,能否利用非高峰时段地铁线路的冗余运力缓解城市交通拥堵和货运压力,成为近年来城市货运领域的一个热点话题。本文研究了一个基于“客货共车”模式的地铁客货协同运输优化问题,特别... 鉴于地铁网络在解决大城市居民出行问题上的成功实践,能否利用非高峰时段地铁线路的冗余运力缓解城市交通拥堵和货运压力,成为近年来城市货运领域的一个热点话题。本文研究了一个基于“客货共车”模式的地铁客货协同运输优化问题,特别考虑了货运需求的运输方式约束(即同一货物运输需求将完全通过地铁完成,或完全不依赖地铁)以及客货需求的时间窗约束,其目标是在必须满足乘客需求的情况下,充分利用地铁运力服务货运需求,同时减少货运对乘客的影响以及混合编组的工作量。货运需求的运输方式约束使得该问题被构建成一个非线性整数规划模型。通过线性化技术,将非线性整数规划模型转化为等价的线性整数规划模型,并利用商业求解器CPLEX进行求解。以北京地铁八通线为例的实验结果表明,所提出的方法能够有效解决所关注的问题,同时所得到的协同优化策略能够提高地铁线路的“客货共车”运输效率。为了进一步说明所考虑的问题特点,相关计算结果与已有研究进行了对比,这为地铁货运管理和决策提供了更多参考。 展开更多
关键词 地铁货运 客货协同运输 车厢分配 货运方式 时间窗
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基于法尼醇X受体通路探讨壮药依山红对胆汁淤积大鼠的影响
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作者 赵心怡 唐秀松 +5 位作者 苏华 李汶玲 揭洁 林雪婷 罗宇东 庞宇舟 《环球中医药》 CAS 2024年第10期1955-1962,共8页
目的探讨壮药依山红对α-萘异硫氰酸酯(alpha-naphtyl isothiocyanate,ANIT)诱导胆汁淤积大鼠的影响及其作用机制。方法采用120只SD大鼠,随机分成6组,分别为正常组、模型组、熊去氧胆酸组及壮药依山红高、中、低剂量组,每组20只。除正... 目的探讨壮药依山红对α-萘异硫氰酸酯(alpha-naphtyl isothiocyanate,ANIT)诱导胆汁淤积大鼠的影响及其作用机制。方法采用120只SD大鼠,随机分成6组,分别为正常组、模型组、熊去氧胆酸组及壮药依山红高、中、低剂量组,每组20只。除正常组外,余用ANIT灌胃建立胆汁淤积大鼠模型。连续给药15天后,称量计算大鼠肝脾指数;血清生化法检测血清丙氨酸氨基转移酶(alanine aminotransferase,ALT)、门冬氨酸氨基转移酶(aspartate aminotransferase,AST)、碱性磷酸酶(alkaline phosphatase,AKP)等转氨酶指标,测定总胆红素(total bilirubin,TBIL)、直接胆红素(direct bilirubin,DBIL)、总胆汁酸(total bile acids,TBA)等胆红素指标;苏木素—伊红(hematoxylin-Eosin,HE)染色法评估肝组织病理学变化,油红O染色评估肝脏脂滴代谢情况;蛋白免疫印迹法及实时荧光定量聚合酶链式反应检测法尼醇X受体(farnesoid X receptor,FXR)、钠牛磺胆酸共转运肽(Na+-taurocholate co-transporting polypeptide,NTCP)、多药耐药相关蛋白2(multidrug resistance-associated protein 2,MRP2)、胆汁盐转运蛋白(bile salt export pump,BSEP)蛋白和mRNA表达水平。结果与正常组比,模型组大鼠肝脾指数、血清转氨酶(ALT、AST、AKP)及胆红素(TBIL、DBIL、TBA)显著升高(P<0.05),肝组织受损。壮药依山红各剂量及熊去氧胆酸显著降低这些指标(P<0.05),改善肝组织学病变,减少脂滴沉积,效果呈剂量依赖性。同时,依山红各剂量组大鼠肝组织中NTCP、MRP2蛋白的表达量均明显升高(P<0.05);高剂量组大鼠肝组织中BSEP蛋白相对表达量显著下降(P<0.05)。与模型组相比,依山红高、中剂量组大鼠肝组织中Fxr、Ntcp、Mrp2 mRNA的相对表达量显著升高(P<0.05);依山红低剂量组大鼠仅Mrp2 mRNA表达量显著升高(P<0.05);依山红各剂量大鼠肝组织中Bsep mRNA表达水平显著下降(P<0.05)。结论壮药依山红可通过调节FXR及其调控的胆汁转运相关蛋白的表达,对ANIT诱导胆汁淤积模型大鼠起到保肝利胆的作用。 展开更多
关键词 依山红 胆汁淤积 Α-萘异硫氰酸酯 法尼醇X受体 钠牛磺胆酸共转运肽 多药耐药相关蛋白2 胆汁盐转运蛋白 壮药
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gem-Dimethyl-bearing C-Glucosides as Sodium-glucose Co-transporter 2 (SGLT2) Inhibitors 被引量:2
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作者 Shi, Yongheng Zhao, Guilong +5 位作者 Lou, Yuanyuan Wang, Yuli Shao, Hua Liu, Wei Xu, Weiren Tang, Lida 《Chinese Journal of Chemistry》 SCIE CAS CSCD 2011年第6期1192-1198,共7页
Three novel gem-dimethyl C-glucosides were designed as sodium-glucose co-transporter 2 (SGLT2) inhibitors, and their syntheses started from D-glucose and three 2-substituted-5-bromobenzoic acids were achieved via a ... Three novel gem-dimethyl C-glucosides were designed as sodium-glucose co-transporter 2 (SGLT2) inhibitors, and their syntheses started from D-glucose and three 2-substituted-5-bromobenzoic acids were achieved via a facile 8-step protocol, with the key step being anhydrous aluminum chloride-catalyzed Friedel-Crafts alkylation of tertiary alcohols and phenetol. These three SGLT2 inhibitors were evaluated in vivo with a mice oral glucose tolerance test (OGTT), and the anti-hyperglycemic activities of all these three compounds were comparable with that of the positive control Dapagliflozin. 展开更多
关键词 sodium-glucose co-transporter 2 (SGLT2) gem-dimethyl synthesis Friedel-Crafts alkylation oral glucose tolerance test (OGTT)
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SGLT2i对糖尿病心肌保护作用及机制研究进展
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作者 沈泽昱 许富康 唐伟良 《医药前沿》 2024年第6期27-30,34,共5页
钠-葡萄糖协同转运蛋白-2抑制剂(SGLT2i)是新型的降糖药物,通过其独特的降糖机制来调整患者的血糖。目前的很多研究发现SGLT2i在降低血糖的同时也能使患者的心功能受益,但是目前其作用机制尚未完全明确,本文对其相关机制的研究进展进行... 钠-葡萄糖协同转运蛋白-2抑制剂(SGLT2i)是新型的降糖药物,通过其独特的降糖机制来调整患者的血糖。目前的很多研究发现SGLT2i在降低血糖的同时也能使患者的心功能受益,但是目前其作用机制尚未完全明确,本文对其相关机制的研究进展进行综述。 展开更多
关键词 2型糖尿病 综述 钠-葡萄糖协同转运蛋白-2抑制剂 心肌保护 机制
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Canagliflozin,an inhibitor of sodium-glucose co-transporter 2,advances in the treatment of type 2 diabetes 被引量:1
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作者 Ying Fu Simo Liu +1 位作者 Yan Ma Nannan Wu 《Journal of Chinese Pharmaceutical Sciences》 CAS CSCD 2022年第8期569-588,共20页
Canagliflozin(CANA)is a sodium-glucose co-transporter 2 inhibitor.One of the important mechanisms of CANA is the inhibitory effect on the glucose uptake in the proximal tubule of the nephron,and the other mechanism ca... Canagliflozin(CANA)is a sodium-glucose co-transporter 2 inhibitor.One of the important mechanisms of CANA is the inhibitory effect on the glucose uptake in the proximal tubule of the nephron,and the other mechanism can be the reduction of inflammatory cytokine expression monocytes and macrophages.It is proved by FDA for the management of type 2 diabetes.In the present work,we summarized the publication and clinical evidence of the CANA on healthy individuals and those with related metabolic diseases,such as type 1 and 2 diabetes,obesity,or cardiovascular and kidney diseases.This drug has been reported to offer potential advantages in regulating body weight and reducing heart failure,hypoglycemia,and stroke risk in patients with type 2 diabetes.Some in vitro and animal experiments also show that this drug has good effects on cancer treatment.However,some case reports and experiments also show the side effect of CANA,such as amputation,fracture,and pancreatitis,while the mechanism is still unknown.Overall,CANA has a good effect on the management of type 2 diabetes by reducing the risk of kidney failure,cardiovascular diseases,and stroke.However,as a new drug,more clinical trials and experiments of CANA should be carried out in the future. 展开更多
关键词 Sodium-glucose co-transporter 2 inhibitors Canagliflozin Diabetes mellitus
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钠-葡萄糖协同转运蛋白2抑制剂在腹膜透析中的研究及应用前景
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作者 余乐 成水芹(综述) 俞雨生(审校) 《肾脏病与透析肾移植杂志》 CAS CSCD 2024年第4期372-376,共5页
钠-葡萄糖协同转运蛋白2抑制剂(SGLT2i)作为一种新型口服降糖药,对2型糖尿病或非糖尿病患者都表现出良好的心肾保护作用,并可改善慢性肾脏病患者的心肾结局。虽然目前临床试验已将纳入人群的估算肾小球滤过率(eGFR)扩展至更低水平,但仍... 钠-葡萄糖协同转运蛋白2抑制剂(SGLT2i)作为一种新型口服降糖药,对2型糖尿病或非糖尿病患者都表现出良好的心肾保护作用,并可改善慢性肾脏病患者的心肾结局。虽然目前临床试验已将纳入人群的估算肾小球滤过率(eGFR)扩展至更低水平,但仍排除了eGFR<20 mL/(min·1.73 m 2)的患者,SGLT2i的心肾保护作用能否延续至维持性透析期是临床关注的重点。此外,SGLT2i的抗炎和抗纤维化作用可能对腹膜透析(PD)患者维持腹膜功能有益。因此,SGLT2i在PD患者中的应用值得进一步探索。 展开更多
关键词 钠-葡萄糖协同转运蛋白2抑制剂 腹膜透析 心肾保护 残余肾功能 腹膜
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SGLT2抑制剂联合利尿剂对CHF患者肾功能、心功能的影响及安全性研究
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作者 努尔古丽·托合提 阿布力米提·加马力 +1 位作者 阿不都热合曼·米吉提 努尔比亚·阿地力 《疑难病杂志》 CAS 2024年第11期1325-1330,共6页
目的基于单中心前瞻性队列研究探索不同钠—葡萄糖共转运蛋白2(SGLT2)抑制剂联合利尿剂治疗对慢性心力衰竭(CHF)患者肾功能、心功能的影响及临床安全性。方法采用随机、开放、单中心前瞻性临床队列研究,选取2022年6月—2023年12月喀什... 目的基于单中心前瞻性队列研究探索不同钠—葡萄糖共转运蛋白2(SGLT2)抑制剂联合利尿剂治疗对慢性心力衰竭(CHF)患者肾功能、心功能的影响及临床安全性。方法采用随机、开放、单中心前瞻性临床队列研究,选取2022年6月—2023年12月喀什地区第二人民医院心血管内科收治的CHF患者96例作为研究对象,通过随机数字表法分为达格列净组(n=32)、卡格列净组(n=32)和对照组(n=32),所有患者均接受常规基础心力衰竭治疗,其中达格列净组患者联合应用达格列净,卡格列净组患者联合应用卡格列净,对照组患者不额外给予药物治疗。所有患者连续治疗3个月并随访。观察患者心功能相关指标[左心室射血分数(LVEF)、左心室质量指数(LVMI)、左心室重构指数(LVRI)],心力衰竭相关血清学指标[血脑钠肽(BNP)、N端脑钠肽前体(NT-proBNP)]、心室重构相关指标[胱抑素C(CysC)、成纤维细胞生长因子23(FGF23)、基质金属蛋白酶9(MMP-9)],炎性因子[C反应蛋白(CRP)、白介素6(IL-6)、肿瘤坏死因子α(TNF-α)]、肾功能指标[血肌酐(SCr)、尿素氮(BUN)、肾小球滤过率(GFR)]及药物相关不良反应。结果治疗3个月后3组患者LVEF、LVRI、GFR均较治疗前升高,LVMI、BNP、NT-proBNP、CysC、FGF23、MMP-9、SCr和BUN水平均降低,且达格列净组、卡格列净组患者各心功能指标、心力衰竭相关血清学指标、心室重构相关指标及肾功能指标的变化幅度均大于对照组患者(F/P=13.740/<0.001、6.415/0.002、8.520/<0.001、12.184/<0.001、15.945/<0.001、14.927/<0.001、12.330/<0.001、8.755/<0.001、20.388/<0.001、12.055/<0.001、10.196/<0.001),但达格列净组、卡格列净组2组比较差异均无统计学意义(P>0.05);治疗后3组患者血清CRP、IL-6和TNF-α水平均较治疗前降低,但组间比较差异无统计学意义(F/P=0.101/0.904、1.449/0.442、0.021/0.979);3组患者不良事件发生率比较差异均无统计学意义(χ^(2)/P=0.571/0.751)。结论不论是达格列净还是卡格列净,在基础治疗方案上联合应用SGLT2抑制剂均可有效改善CHF患者的心功能及肾功能,同时显著降低患者炎性反应水平、心力衰竭相关血清学指标及心室重构程度,且具有较高的临床安全性。 展开更多
关键词 慢性心力衰竭 钠—葡萄糖共转运蛋白2抑制剂 心功能 肾功能 疗效 安全性
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