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《全球生物群落保护与全球变暖对生态和生物多样性的影响》推介
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作者 白明 丁强 《生物多样性》 北大核心 2025年第7期230-232,共3页
生物多样性是地球生命的基础,可为人类提供清洁空气、淡水、粮食、药物等关键服务,调节气候与疾病,是国家可持续发展的核心战略资产。然而,我们对于地球上生物多样性的认知仍非常有限。目前仅有约200万种生物被命名,可能仅占地球生物种... 生物多样性是地球生命的基础,可为人类提供清洁空气、淡水、粮食、药物等关键服务,调节气候与疾病,是国家可持续发展的核心战略资产。然而,我们对于地球上生物多样性的认知仍非常有限。目前仅有约200万种生物被命名,可能仅占地球生物种类的1%-10%。 展开更多
关键词 全球变暖 生态影响 全球生物群落 生物多样性认知
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聚酰亚胺树脂基复合摩擦材料成型技术研究进展 被引量:2
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作者 李轩 何瑜 +3 位作者 明白 张晓燕 刘福华 来升 《中国塑料》 CAS CSCD 北大核心 2024年第4期116-123,共8页
简要介绍了聚酰亚胺(PI)复合摩擦材料的发展概况,综述了热模压成型、冷⁃热等静压和3D打印以及其他成型技术如注射成型、挤出成型等方法制备PI复合摩擦材料的研究进展,最后展望了其成型技术的发展前景,旨在为高性能PI树脂基复合摩擦材料... 简要介绍了聚酰亚胺(PI)复合摩擦材料的发展概况,综述了热模压成型、冷⁃热等静压和3D打印以及其他成型技术如注射成型、挤出成型等方法制备PI复合摩擦材料的研究进展,最后展望了其成型技术的发展前景,旨在为高性能PI树脂基复合摩擦材料的开发提供有益参考。 展开更多
关键词 聚酰亚胺 复合摩擦材料 成型工艺 发展现状
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玄武岩纤维增强聚酰亚胺复合材料的往复摩擦磨损行为
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作者 李轩 明白 +4 位作者 刘福华 柴悦 何瑜 位泽坤 吕威 《材料科学与工程学报》 CSCD 北大核心 2024年第6期991-998,1015,共9页
采用热模压方法制备了纯聚酰亚胺(PI)、玄武岩纤维/聚酰亚胺(BF/PI)和硅烷KH550改性玄武岩纤维/聚酰亚胺(KBF/PI)复合材料,对比研究了PI、BF/PI和KBF/PI的硬度、弯曲强度及其与GCr15球对磨时的摩擦磨损行为。研究结果表明,BF/PI和KBF/P... 采用热模压方法制备了纯聚酰亚胺(PI)、玄武岩纤维/聚酰亚胺(BF/PI)和硅烷KH550改性玄武岩纤维/聚酰亚胺(KBF/PI)复合材料,对比研究了PI、BF/PI和KBF/PI的硬度、弯曲强度及其与GCr15球对磨时的摩擦磨损行为。研究结果表明,BF/PI和KBF/PI的硬度、弯曲强度和耐磨性能均明显高于PI,其中KBF/PI的提高幅度最大。当摩擦载荷为6~12 N时,BF/PI和KBF/PI的平均摩擦系数远低于PI,且摩擦系数的波动更小;当摩擦载荷增至15 N时,PI的平均摩擦系数明显降低且波动变小,而BF/PI和KBF/PI的平均摩擦系数明显增加。不同载荷下PI、BF/PI和KBF/PI的摩擦系数与磨损率差异与其摩擦磨损机制密切相关。 展开更多
关键词 聚酰亚胺 玄武岩纤维 弯曲强度 摩擦磨损
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Phase Ib study of anti-EGFR antibody(SCT200)in combination with anti-PD-1 antibody(SCT-I10A)for patients with RAS/BRAF wild-type metastatic colorectal cancer
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作者 ming bai Yao Lu +7 位作者 Chunmei Shi Jianwei Yang Wei Li Xianli Yin Chenghui Huang Lin Shen Liangzhi Xie Yi Ba 《Cancer Biology & Medicine》 SCIE CAS CSCD 2024年第7期636-650,共15页
Objective:This study evaluated the safety and efficacy of an anti-epidermal growth factor receptor(EGFR)antibody(SCT200)and an anti-programmed cell death 1(PD-1)antibody(SCT-I10A)as third-line or subsequent therapies ... Objective:This study evaluated the safety and efficacy of an anti-epidermal growth factor receptor(EGFR)antibody(SCT200)and an anti-programmed cell death 1(PD-1)antibody(SCT-I10A)as third-line or subsequent therapies in patients with rat sarcoma viral oncogene(RAS)/v-raf murine sarcoma viral oncogene homolog B(BRAF)wild-type(wt)metastatic colorectal cancer(mCRC).Methods:We conducted a multicenter,open-label,phase Ib clinical trial.Patients with histologically confirmed RAS/BRAF wt m CRC with more than two lines of treatment were enrolled and treated with SCT-I10A and SCT200.The primary endpoints were the objective response rate(ORR)and safety.The secondary endpoints included disease control rate(DCR),progression-free survival(PFS),and overall survival(OS).Results:Twenty-one patients were enrolled in the study through January 28,2023.The ORR was 28.57%and the DCR was 85.71%(18/21).The median PFS and OS were 4.14 and 12.84 months,respectively.The treatment-related adverse events(TRAEs)were tolerable.Moreover,compared with the monotherapy cohort from our previous phase I study evaluating SCT200 for RAS/BRAF wt m CRC in a third-line setting,no significant improvements in PFS and OS were observed in the combination group.Conclusions:SCT200 combined with SCT-I10A demonstrated promising efficacy in previously treated RAS/BRAF wt m CRC patients with an acceptable safety profile.Further head-to-head studies with larger sample sizes are needed to validate whether the efficacy and safety of combined anti-EGFR and anti-PD-1 therapy are superior to anti-EGFR monotherapy in the third-line setting.(Registration No.NCT04229537). 展开更多
关键词 Colorectal cancer SCT-I10A SCT200 epidermal growth factor receptor programmed cell death 1
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聚酰亚胺及其复合材料的摩擦学改性研究进展 被引量:4
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作者 刘福华 明白 +4 位作者 李轩 柴悦 张晓燕 来升 田进 《材料科学与工程学报》 CAS CSCD 北大核心 2023年第6期1033-1040,共8页
本文从分子结构的摩擦学改性、表面改性、共混改性和复合改性综述了聚酰亚胺及其复合材料的摩擦学改性研究进展,并简要介绍了我国聚酰亚胺摩擦材料的发展现状,为高性能聚合物基摩擦材料的设计与性能优化提供参考。
关键词 聚酰亚胺 摩擦材料 摩擦学改性 研究现状
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基于中医药文化和健康旅游视角提出张仲景文化品牌建设对策 被引量:1
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作者 许二平 刘保光 +6 位作者 白明 刘雅琳 栗俞程 汪保英 陈毅恒 谢苗 董颖 《Chinese Medicine and Natural Products》 2023年第2期51-55,共5页
当今,中医药文化和健康旅游走向融合,有着内在的必然依据,它们孕育出的中医药健康旅游新业态给中医药文化发展和旅游业的创新注入了新的活力。作为中医药产业文化代表的张仲景文化,应抓住机遇,借助健康旅游实现张仲景品牌建设的新突破... 当今,中医药文化和健康旅游走向融合,有着内在的必然依据,它们孕育出的中医药健康旅游新业态给中医药文化发展和旅游业的创新注入了新的活力。作为中医药产业文化代表的张仲景文化,应抓住机遇,借助健康旅游实现张仲景品牌建设的新突破。主要建设策略有:积极推出以张仲景等中华名医事迹为题材的图书或影视剧;将中药材种植基地开辟为特色旅游观光园;创立中医药文化研究及传播基地,建设学、疗、游为一体的中医药疗养旅游基地;利用信息技术和文化媒体平台将张仲景中医药学绍介到千家万户。 展开更多
关键词 中医药文化 健康旅游 张仲景 品牌建设 名医事迹
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热固性聚酰亚胺复合材料的往复摩擦磨损性能研究
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作者 刘福华 明白 +3 位作者 何瑜 周德东 赵凤 李轩 《山东化工》 CAS 2023年第17期5-8,共4页
采用热模压成型方法制备了玄武岩纤维增强、多元填料改性的热固性聚酰亚胺复合材料,研究了复合材料的组织结构、摩擦磨损性能与磨损机制。结果表明:所制备的多元复合材料组织致密,玄武岩纤维和各填料分散均匀,硬度明显高于纯聚酰亚胺(PI... 采用热模压成型方法制备了玄武岩纤维增强、多元填料改性的热固性聚酰亚胺复合材料,研究了复合材料的组织结构、摩擦磨损性能与磨损机制。结果表明:所制备的多元复合材料组织致密,玄武岩纤维和各填料分散均匀,硬度明显高于纯聚酰亚胺(PI)和玄武岩纤维改性聚酰亚胺(BF/PI)。摩擦磨损实验结果表明,多元复合材料具有优良的耐磨性能和摩擦稳定性,摩擦系数明显低于PI和BF/PI,磨损率分别较纯PI试样和BF/PI试样低约50.3%和19.9%。 展开更多
关键词 聚酰亚胺 玄武岩纤维 复合摩擦材料 摩擦磨损 磨损机制
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昆虫多样性三十年研究进展 被引量:20
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作者 王明强 罗阿蓉 +30 位作者 周青松 陈婧婷 谢婷婷 李逸 DouglasChesters 石晓宇 肖晖 刘桓吉 丁强 周璇 罗一平 路园园 佟一杰 赵政宇 白明 郭鹏飞 陈思翀 中村彰宏 彭艳琼 赵延会 魏淑花 林晓龙 陈华燕 罗世孝 陆宴辉 鲁亮 余建平 周欣 邹怡 路浩 朱朝东 《生物多样性》 CAS CSCD 北大核心 2022年第10期117-145,共29页
当前,全球昆虫数量和多样性均处于下降趋势,而导致这一趋势的原因主要包括人为干扰及气候变化。本文基于森林、草地、农业、水生和土壤生态系统,以植食性、访花、捕食性、寄生性、食果以及食腐昆虫为重点功能昆虫群,综述了近三十年来国... 当前,全球昆虫数量和多样性均处于下降趋势,而导致这一趋势的原因主要包括人为干扰及气候变化。本文基于森林、草地、农业、水生和土壤生态系统,以植食性、访花、捕食性、寄生性、食果以及食腐昆虫为重点功能昆虫群,综述了近三十年来国内外昆虫多样性研究领域的主要进展,并分析了发展趋势。近年来,昆虫多样性的研究维度不断拓展,形态多样性研究不断深入,系统发生多样性、功能多样性和遗传多样性等研究也显著加强。此外,昆虫多样性研究的空间尺度也逐步扩大,大尺度区域性研究甚至全球范围的调查持续增长。昆虫进化历史也被引入多样性格局研究中,并随着系统发生信息学方法的普及而被整合到生态系统建成和生物多样性形成机制研究中。未来需要加强关键昆虫类群整合分类学研究、功能性状多样性、林冠昆虫多样性、互作网络结构等方向的研究。 展开更多
关键词 功能昆虫群 多维度多样性 生态系统 昆虫多样性丧失
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芒柄花黄素改善脂多糖诱导的小鼠抑郁样行为和神经炎症的作用研究 被引量:1
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作者 李梦园 刘辉 +4 位作者 彭帅军 苏攀 许二平 白明 栗俞程 《Chinese Medicine and Natural Products》 2023年第3期126-132,共7页
目的:观察芒柄花黃素(formononetin,FMN)对脂多糖(lipopolysaccharide,LPS)诱导的小鼠抑郁样行为和神经炎症的影响。方法:雄性ICR小鼠随机分为正常组、LPS组、帕罗西江组(20 mg·kg^(-1))、FMN低剂量组(20 mg·kg^(-1)),FMN高... 目的:观察芒柄花黃素(formononetin,FMN)对脂多糖(lipopolysaccharide,LPS)诱导的小鼠抑郁样行为和神经炎症的影响。方法:雄性ICR小鼠随机分为正常组、LPS组、帕罗西江组(20 mg·kg^(-1))、FMN低剂量组(20 mg·kg^(-1)),FMN高剂量组(40 mg·kg^(-1)),每组8只,灌胃给药14天后采用糖水偏好实验(sucrose preference test,SPT)、悬尾实验(tail suspension test,TST)和旷场实验(open field test,OFT)观察小鼠抑郁样行为;采用晦联免疫吸附测定实验(enzyme-linked immunosorbent assay,ELISA)和实时荧光定量聚合晦链式反应实验(real-time quantitative polymerase chain reaction,qRT-PCR)测定小鼠海马组织中白细胞介素-6(interleukin-6,IL-6)、IL-1β和肿瘤坏死因子-α(tumor necrosis factor-α,TNF-α)的蛋白和mRNA表达水平;采用免疫荧光染色观察小鼠海马组织中小胶质细胞钙结合蛋白-1(ionized calcium binding adapter molecule1,Iba-1)的表达水平以评价小胶质细胞活化水平。结果:与正常组相比,LPS组小鼠糖水偏好率、中心区域活动时间、中心区域活动距离、进入中心区域的次数显著下降(P<0.01),TST不动时间显著延长(P<0.05),海马组织IL-6、IL-1β和TNF-α蛋白及mRNA表达水平显著升高(P<0.01),海马组织CA1、CA3和DG区域Iba-1荧光强度显著增加(P<0.01)。与LPS组相比,FMN组小鼠糖水偏好率、中心区域活动时间、中心区域活动距离和进入中心区域的次数均显著升高(P<0.05或P<0.01),TST不动时间显著缩短(P<0.01),海马组织IL-6、IL-1β和TNF-α蛋白及mRNA表达水平显著降低(P<0.05或P<0.01),海马组织CA1、CA3和DG区域Iba-1荧光强度显著降低(P<0.01)。结论:FMN可能通过抑制LPS诱导的小胶质细胞活化,减轻海马神经炎症,改善小鼠的抑郁样行为。 展开更多
关键词 芒柄花黃素 抑郁症 脂多糖 神经炎症 促炎细胞因子 小胶质细胞活化
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TIPS improves liver transplantation-free survival in cirrhotic patients with refractory ascites:An updated meta-analysis 被引量:37
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作者 ming bai Xing-Shun Qi +3 位作者 Zhi-Ping Yang Man Yang Dai-ming Fan Guo-Hong Han 《World Journal of Gastroenterology》 SCIE CAS 2014年第10期2704-2714,共11页
AIM: To compare the liver transplantation-free (LTF) survival rates between patients who underwent transjugular intrahepatic portosystemic shunts (TIPS) and those who underwent paracentesis by an updated meta-analysis... AIM: To compare the liver transplantation-free (LTF) survival rates between patients who underwent transjugular intrahepatic portosystemic shunts (TIPS) and those who underwent paracentesis by an updated meta-analysis that pools the effects of both number of deaths and time to death. 展开更多
关键词 Transjugular intrahepatic portosystemic shunt ASCITES PARACENTESIS SURVIVAL META-ANALYSIS
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Shunting branch of portal vein and stent position predict survival after transjugular intrahepatic portosystemic shunt 被引量:28
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作者 ming bai Chuang-Ye He +10 位作者 Xing-Shun Qi Zhan-Xin Yin Jian-Hong Wang Wen-Gang Guo Jing Niu Jie-Lai Xia Zhuo-Li Zhang Andrew C Larson Kai-Chun Wu Dai-ming Fan Guo-Hong Han 《World Journal of Gastroenterology》 SCIE CAS 2014年第3期774-785,共12页
AIM: To evaluate the effect of the shunting branch of the portal vein (PV) (left or right) and the initial stent position (optimal or suboptimal) of a transjugular intrahepatic portosystemic shunt (TIPS).
关键词 Transjugular intrahepatic portosystemic shunt CIRRHOSIS Variceal bleeding Portal vein Stent position
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Nonselective beta-blockers in cirrhotic patients with no or small varices:A meta-analysis 被引量:23
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作者 Xing-Shun Qi Yong-Xin Bao +3 位作者 ming bai Wen-Da Xu Jun-Na Dai Xiao-Zhong Guo 《World Journal of Gastroenterology》 SCIE CAS 2015年第10期3100-3108,共9页
AIM:To explore effects of nonselective beta-blockers(NSBBs) in cirrhotic patients with no or small varices.METHODS:The Pub Med,EMBASE,Science Direct,and Cochrane library databases were searched for relevant papers.A m... AIM:To explore effects of nonselective beta-blockers(NSBBs) in cirrhotic patients with no or small varices.METHODS:The Pub Med,EMBASE,Science Direct,and Cochrane library databases were searched for relevant papers.A meta-analysis was performed using ORs with 95%CI as the effect sizes.Subgroup analysis was conducted according to the studies including patients without varices and those with small varices.RESULTS:Overall,784 papers were initially retrieved from the database searches,of which six randomized controlled trials were included in the meta-analysis.The incidences of large varices development(OR = 1.05,95%CI:0.25-4.36;P = 0.95),first upper gastrointestinal bleeding(OR = 0.59,95%CI:0.24-1.47;P = 0.26),and death(OR = 0.70,95%CI:0.45-1.10;P = 0.12) were similar between NSBB and placebo groups.However,the incidence of adverse events was significantly higher in the NSBB group compared with the placebo group(OR = 3.47,95%CI:1.45-8.33;P = 0.005).The results of subgroup analyses were similar to those of overall analyses.CONCLUSION:The results of this meta-analysis indicate that NSBBs should not be recommended for cirrhotic patients with no or small varices. 展开更多
关键词 BETA-BLOCKER Liver CIRRHOSIS PORTAL hyper-tension
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Selection of a TIPS stent for management of portal hypertension in liver cirrhosis: An evidence-based review 被引量:13
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作者 Xing-Shun Qi ming bai +1 位作者 Zhi-Ping Yang Dai-ming Fan 《World Journal of Gastroenterology》 SCIE CAS 2014年第21期6470-6480,共11页
Nowadays,transjugular intrahepatic portosystemic shunt(TIPS)has become a mainstay treatment option for the management of portal hypertension-related complications in liver cirrhosis.Accumulated evidence has shown that... Nowadays,transjugular intrahepatic portosystemic shunt(TIPS)has become a mainstay treatment option for the management of portal hypertension-related complications in liver cirrhosis.Accumulated evidence has shown that its indications are being gradually expanded.Notwithstanding,less attention has been paid for the selection of an appropriate stent during a TIPS procedure.Herein,we attempt to review the current evidence regarding the diameter,type,brand,and position of TIPS stents.Several following recommendations may be considered in the clinical practice:(1)a 10-mm stent may be more effective than an 8-mm stent for the management of portal hypertension,and may be superior to a 12-mm stent for the improvement of survival and shunt patency;(2)covered stents are superior to bare stents for reducing the development of shunt dysfunction;(3)if available,Viatorr stent-grafts may be recommended due to a higher rate of shunt patency;and(4)the placement of a TIPS stent in the left portal vein branch may be more reasonable for decreasingthe development of hepatic encephalopathy.However,given relatively low quality of evidence,prospective well-designed studies should be warranted to further confirm these recommendations. 展开更多
关键词 Transjugular intrahepatic portosystemic shunt Portal hypertension Liver cirrhosis Variceal bleeding Hepatic encephalopathy Shunt dysfunction
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警惕物种致危和生物入侵的风险:我国主要电商平台的甲虫贸易调查
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作者 魏辰 佟一杰 +2 位作者 曾岩 白明 万霞 《生物多样性》 CAS CSCD 北大核心 2023年第6期142-152,共11页
甲虫作为物种多样性最丰富的动物类群之一,在农林生产、生物多样性保护中的科学价值受到长期关注,但其作为宠物、收藏品的商业价值与贸易情况却鲜有研究。我国的相关工作也非常缺乏,对当前通过电商平台进行的甲虫贸易尤其缺少了解。本... 甲虫作为物种多样性最丰富的动物类群之一,在农林生产、生物多样性保护中的科学价值受到长期关注,但其作为宠物、收藏品的商业价值与贸易情况却鲜有研究。我国的相关工作也非常缺乏,对当前通过电商平台进行的甲虫贸易尤其缺少了解。本文首次对国内主要电商平台两年内(2018年10月至2020年10月)的甲虫贸易进行了调查。结果发现:贸易名单涉及的甲虫有486种,隶属于24科234属,总交易额达到189,407,277元。贸易形式主要为标本和活体两类。标本贸易涉及到13科175属355种。活体贸易涉及到21科98属157种,含入侵物种4科6属6种,农林害虫11科15属15种。两类贸易均涉及到受保护物种,其中,有4科5属5种入列《国家重点保护野生动物名录》, 1科1属1种入列CITES附录II, 5科10属11种入列《国家保护的有益的或者有重要经济、科学研究价值的陆生野生动物名录》。电商平台为甲虫贸易提供丰富、及时、准确的信息,常使卖方为获得最大利润而对受保护物种过度采集,令其面临致危或灭绝风险。电商平台开放性和全球性的特点,使得非本土物种的活体贸易更加高效、经济、可行,导致了生物入侵、农林虫害、病原生物传播和本土物种遗传特征丧失的风险显著提高。本文也对我国电商平台甲虫贸易的监管提出了相关建议。 展开更多
关键词 甲虫贸易 电商平台 物种保护 监管建议
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Persimmon leaf flavonoid promotes brain ischemic tolerance 被引量:6
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作者 mingsan Miao Xuexia Zhang +1 位作者 ming bai Linan Wang 《Neural Regeneration Research》 SCIE CAS CSCD 2013年第28期2625-2632,共8页
Persimmon leaf flavonoid has been shown to enhance brain ischemic tolerance in mice, but its mechanism of action remains unclear. The bilateral common carotid arteries were occluded using a micro clip to block blood f... Persimmon leaf flavonoid has been shown to enhance brain ischemic tolerance in mice, but its mechanism of action remains unclear. The bilateral common carotid arteries were occluded using a micro clip to block blood flow for 10 minutes. After 10 minutes of ischemic preconditioning, 200,100, and 50 mg/kg persimmon leaf flavonoid or 20 mg/kg ginaton was intragastrically administered per day for 5 days. At 1 hour after the final administration, ischemia/reperfusion models were estab- lished by blocking the middle cerebral artery for 2 hours. At 24 hours after model establishment, compared with cerebral ischemic rats without ischemic preconditioning or drug intervention, plasma endothelin, thrombomodulin and yon Willebrand factor levels significantly decreased and intercel- lular adhesion molecule-1 expression markedly reduced in brain tissue from rats with ischemic pre- conditioning. Simultaneously, brain tissue injury reduced. Ischemic preconditioning combined with drug exposure noticeably improved the effects of the above-mentioned indices, and the effects of 200 mg/kg persimmon leaf flavonoid were similar to 20 mg/kg ginaton treatment. These results indicate that ischemic preconditioning produces tolerance to recurrent severe cerebral ischemia. However, persimmon leaf flavonoid can elevate ischemic tolerance by reducing inflammatory reactions and vascular endothelial injury. High-dose persimmon leaf flavonoid showed an identical effect to ginaton. 展开更多
关键词 neural regeneration traditional Chinese medicine persimmon leaf flavonoid brain injury brainischemic tolerance ischemic preconditioning GINATON ischemia/reperfusion injury intercellularadhesion molecule-I ENDOTHELIN grants-supported paper NEUROREGENERATION
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Nonselective β-blockers may induce development of portal vein thrombosis in cirrhosis 被引量:7
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作者 Xing-Shun Qi ming bai Dai-ming Fan 《World Journal of Gastroenterology》 SCIE CAS 2014年第32期11463-11466,共4页
Currently, nonselective &#x003b2;-blockers (NSBBs) are commonly used for the prevention of variceal bleeding in liver cirrhosis. The beneficial effects of NSBBs are primarily attributed to the reduction in cardiac... Currently, nonselective &#x003b2;-blockers (NSBBs) are commonly used for the prevention of variceal bleeding in liver cirrhosis. The beneficial effects of NSBBs are primarily attributed to the reduction in cardiac output by blockade of &#x003b2;1 receptors and vasoconstriction of the splanchnic circulation by the blockade of &#x003b2;2 receptors. The prognostic value of occlusive portal vein thrombosis (PVT) in cirrhotic patients has been increasingly recognized. The most important risk factor for the development of PVT in liver cirrhosis is the decreased portal vein inflow velocity. Collectively, we propose that the use of NSBBs potentially increases the development of portal vein thrombosis by reducing portal vein inflow velocity. The hypothesis should be confirmed by prospective cohort studies, in which cirrhotic patients without prior PVT treated with and without NSBBs are enrolled, and the development of PVT during follow-up is compared between the two groups. Additionally, subgroup analyses should be performed according to the dosage of NSBBs and the reduction of portal inflow velocity after use of NSBBs. 展开更多
关键词 Non-selective β-blockers PROPRANOLOL NADOLOL Portal vein thrombosis Liver cirrhosis
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Restrictive vs liberal transfusion for upper gastrointestinal bleeding:A meta-analysis of randomized controlled trials 被引量:5
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作者 Juan Wang Yong-Xin Bao +3 位作者 ming bai Yong-Guo Zhang Wen-Da Xu Xing-Shun Qi 《World Journal of Gastroenterology》 SCIE CAS 2013年第40期6919-6927,共9页
AIM:To compare the outcome of upper gastrointestinal bleeding(UGIB) between patients receiving restrictive and liberal transfusion.METHODS:PubMed,EMBASE,and Cochrane Library databases were employed to identify all rel... AIM:To compare the outcome of upper gastrointestinal bleeding(UGIB) between patients receiving restrictive and liberal transfusion.METHODS:PubMed,EMBASE,and Cochrane Library databases were employed to identify all relevant randomized controlled trials regarding the outcome of UGIB after restrictive or liberal transfusion. Primary outcomes were death and rebleeding. Secondary outcomes were length of hospitalization,amount of blood transfused,and hematocrit and hemoglobin at discharge or after expansion.RESULTS:Overall,4 papers were included in this meta-analysis. The incidence of death was significantly lower in patients receiving restrictive transfusion than those receiving liberal transfusion(OR:0.52,95%CI:0.31-0.87,P = 0.01). The incidence of rebleeding was lower in patients receiving restrictive transfusion than those receiving liberal transfusion,but this difference did not reach any statistical significance(OR:0.26,95%CI:0.03-2.10,P = 0.21). Compared with those receiving liberal transfusion,patients receiving restrictive transfusion had a significantly shorter length of hospitalization(standard mean difference:-0.17,95%CI:-0.30--0.04,P = 0.009) and a significantly smaller amount of blood transfused(standard mean difference:-0.74,95%CI:-1.15--0.32,P = 0.0005) with a lower hematocrit and hemoglobin level at discharge or after expansion.CONCLUSION:Restrictive transfusion should be employed in patients with UGIB. 展开更多
关键词 Upper GASTROINTESTINAL BLEEDING Blood TRANSFUSION META-ANALYSIS Randomized controlled trial
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Geometric morphometric analysis of Eysarcoris guttiger,E.annamita and E.ventralis(Hemiptera:Pentatomidae) 被引量:7
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作者 Rongrong Li Hufang Zhang +1 位作者 Shengcai Li ming bai 《Zoological Systematics》 CSCD 2017年第1期90-101,共12页
The genus Eysarcoris can be easily distinguished from other genera through the two spots in the basal angle of the scutellum. Nevertheless, Eysarcoris species show complex variances. Geometric morphometric methods hav... The genus Eysarcoris can be easily distinguished from other genera through the two spots in the basal angle of the scutellum. Nevertheless, Eysarcoris species show complex variances. Geometric morphometric methods have been increasingly applied to distinguish species and to define the boundary of genera among insects. In the present study, geometric morphometric approach was firstly employed to evaluate the shape variation of three characters (fore wing, hind wing and pygophore) of E. guttiger, E. annamita and E. ventralis using E. aeneus as outgroup to ascertain whether this approach is a reliable method for the taxonomy of Eysarcoris. Analysis was conducted on the landmarks of the three characters of these species. Multivariate regression of procrustes coordinates against centroid size was conducted to test the presence of allometry. Principal component analysis (PCA), canonical variate analysis (CVA) and cluster analysis were utilized to describe variations in shapes among the studied species. For all of the three characters, though PCA analysis showed some overlap among species, p-values for procrustes distance and mahalanobis distance were all less than 0.0001. The distribution of the three studied species corresponds with their species status. This study demonstrates that the geometric morphometrics of both the fore wing and the hind wing might represent a possible tool for the identification of species within this genus. 展开更多
关键词 Geometric morphometrics principal component analysis canonical variateanalysis cluster analysis.
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Prognostic factors in non-malignant and non-cirrhotic patients with portal cavernoma: An 8-year retrospective single-center study 被引量:3
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作者 Xing-Shun Qi ming bai +5 位作者 Chuang-Ye He Zhan-Xin Yin Wen-Gang Guo Jing Niu Fei-Fei Wu Guo-Hong Han 《World Journal of Gastroenterology》 SCIE CAS 2013年第42期7447-7454,共8页
AIM:To evaluate the outcome of non-malignant and non-cirrhotic patients with portal cavernoma and to determine the predictors for survival.METHODS:Between July 2002 and June 2010,we retrospectively enrolled all consec... AIM:To evaluate the outcome of non-malignant and non-cirrhotic patients with portal cavernoma and to determine the predictors for survival.METHODS:Between July 2002 and June 2010,we retrospectively enrolled all consecutive patients admitted to our department with a diagnosis of portal cavernoma without abdominal malignancy or liver cirrhosis.The primary endpoint of this observational study was death and cause of death.Independent predictors of survival were identified using the Cox regression model.RESULTS:A total of 64 patients were enrolled in the study.During a mean follow-up period of 18±2.41mo,7 patients died.Causes of death were pulmonary embolism(n=1),acute leukemia(n=1),massive esophageal variceal hemorrhage(n=1),progressive liver failure(n=2),severe systemic infection secondary to multiple liver abscesses(n=1)and accident(n=1).The cumulative 6-,12-and 36-mo survival rates were 94.9%,86%and 86%,respectively.Multivariate Cox regression analysis demonstrated that the presence of ascites(HR=10.729,95%CI:1.209-95.183,P=0.033)and elevated white blood cell count(HR=1.072,95%CI:1.014-1.133,P=0.015)were independent prognostic factors of non-malignant and non-cirrhotic patients with portal cavernoma.The cumulative 6-,12-and 36-mo survival rates were significantly different between patients with and without ascites(90%,61.5%and 61.5%vs 97.3%,97.3%and 97.3%,respectively,P=0.0008).CONCLUSION:The presence of ascites and elevated white blood cell count were significantly associated with poor prognosis in non-malignant and non-cirrhotic patients with portal cavernoma. 展开更多
关键词 EXTRAHEPATIC PORTAL vein obstruction PORTAL CAVERNOMA Survival Prognostic factors ASCITES
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Toripalimab combined with targeted therapy and chemotherapy achieves pathologic complete response in gastric carcinoma:A case report 被引量:5
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作者 Rui Liu Xia Wang +9 位作者 Zhi Ji Ting Deng Hong-Li Li Yan-Hui Zhang Yu-Chong Yang Shao-Hua Ge Le Zhang ming bai Tao Ning Yi Ba 《World Journal of Clinical Cases》 SCIE 2022年第18期6184-6191,共8页
BACKGROUND Neoadjuvant or perioperative chemotherapy combined with surgery can reduce postoperative recurrence and improve the long-term survival rate of patients with locally advanced resectable gastric carcinoma.Niv... BACKGROUND Neoadjuvant or perioperative chemotherapy combined with surgery can reduce postoperative recurrence and improve the long-term survival rate of patients with locally advanced resectable gastric carcinoma.Nivolumab combined with chemotherapy has been recommended by the National Comprehensive Cancer Network guidelines as a first-line therapy for advanced gastric carcinoma/adenocarcinoma of the gastroesophageal junction and serves as the basis for immunotherapy combined with chemotherapy to become a neoadjuvant therapy.Herein,we report a case in which pathologic complete response was achieved by neoadjuvant administration of toripalimab,Herceptin,and docetaxel,oxaliplatin,calcium folinate,and fluorouracil(FLOT)chemotherapy followed by surgery for human epidermal growth factor receptor 2(HER2)-and programmed deathligand 1(PD-L1)-positive locally advanced gastric carcinoma.We hope that this case will shed some light on neoadjuvant therapy for gastric carcinoma.CASE SUMMARY The patient was diagnosed with locally advanced adenocarcinoma of the cardia.Immunohistochemistry of the baseline tissues suggested that the tissues were HER2-(fluorescent in situ hybridization)and PD-L1-positive(combined positive score=1).The patient underwent surgery following a four-cycle neoadjuvant therapy comprising Herceptin,toripalimab,and FLOT chemotherapy.The postoperative pathological findings showed mild atypical hyperplasia of the local glands with chronic mucosal inflammation(proximal stomach),no clear residual tumor(tumor regression grade 0),no regional lymph node metastasis,and negative upper and lower cut ends.The levels of tumor markers were reduced to normal levels after re-examination.With good postoperative recovery,the four-cycle preoperative chemotherapy was continued at the same dosage as that previously administered.After the treatment,the patient was monitored every 3 mo with a follow-up of 12 mo(4 times).As of February 27,2022,he was in a good condition without disease progression.The clinical trial registration number is E2019401.CONCLUSION There are many ongoing studies on neoadjuvant immunotherapy combined with chemotherapy or radiotherapy;however,most of these studies are phase II studies with small cohorts.According to the results of some current studies,these combined regimens have shown promising results in terms of efficacy and safety.However,the clinical efficacy and safety of the neoadjuvant therapies used in these combined regimens need to be confirmed by additional prospective phase III clinical trials,and further exploration of molecular markers for effective populations is required. 展开更多
关键词 Toripalimab Targeted therapy CHEMOTHERAPY Perioperative management Gastric carcinoma Case report
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