Outcomes of coronary artery bypass grafting in patients with heart failure with a midrange ejection fraction

BackgroundCoronary artery bypass grafting (CABG) improves survival in patients with heart failure and severely reduced left ventricular systolic function (LVEF). Limited data exist regarding adverse cardiovascular event rates after CABG in patients with heart failure with midrange ejection fraction (HFmrEF; LVEF > 40% and < 55%).MethodsWe analyzed data on isolated CABG patients from the Veterans Affairs national database (2010-2019). We stratified patients into control (normal LVEF and no heart failure), HFmrEF, and heart failure with reduced LVEF (HFrEF) groups. We compared all-cause mortality and heart failure hospitalization rates between groups with a Cox model and recurrent events analysis, respectively.ResultsIn 6533 veterans, HFmrEF and HFrEF was present in 1715 (26.3%) and 566 (8.6%) respectively; the control group had 4252 (65.1%) patients. HFrEF patients were more likely to have diabetes mellitus (59%), insulin therapy (36%), and previous myocardial infarction (31%). Anemia was more prevalent in patients with HFrEF (49%) as was a lower serum albumin (mean, 3.6 mg/dL). Compared with the control group, a higher risk of death was observed in the HFmrEF (hazard ratio [HR], 1.3 [1.2-1.5)] and HFrEF (HR, 1.5 [1.2-1.7]) groups. HFmrEF patients had the higher risk of myocardial infarction (subdistribution HR, 1.2 [1-1.6]; P = .04). Risk of heart failure hospitalization was higher in patients with HFmrEF (HR, 4.1 [3.5-4.7]) and patients with HFrEF (HR, 7.2 [6.2-8.5]).ConclusionsHeart failure with midrange ejection fraction negatively affects survival after CABG. These patients also experience higher rates myocardial infarction and heart failure hospitalization.     

miR-361-5p对肾细胞癌ACHN细胞恶性生物学行为的影响

目的：探讨miR-361-5p对肾细胞癌ACHN细胞增殖、侵袭、迁移、凋亡及其细胞周期的影响。方法：将miR-361-5p mimics和miR-361-5p inhibitor分别转染至肾癌ACHN细胞中，用qPCR检测转染细胞中miR-361-5p的表达水平，用MTT法、划痕愈合实验、Transwell实验、流式细胞术分别检测细胞的增殖、迁移、侵袭、细胞周期和凋亡水平。结果：与空白对照组和 Mimics-NC组比较，miR-361-5p mimics组ACHN细胞中miR-361-5p表达水平显著升高（P<0.01），细胞的增殖、侵袭和迁移能力均显著减弱（均P<0.01），而凋亡率升高（P<0.01）。与空白对照组或Inhibitor-NC组比较，miR-361-5p inhibitor组细胞中miR-361-5p表达水平显著下降（P<0.01），细胞的增殖、侵袭和迁移能力均增强（均P<0.01），细胞周期运转加速（P<0.01），凋亡率降低（P<0.05）。结论：miR-361-5p可抑制肾癌ACHN细胞的增殖、侵袭和迁移，并诱导细胞凋亡，其在肾癌发生发展过程中发挥重要的抑制作用。     

Annexin A13 predicts poor prognosis for lung adenocarcinoma patients and accelerates the proliferation and migration of lung adenocarcinoma cells by modulating epithelial–mesenchymal transition

This study aimed to investigate the role of ANXA13 in lung adenocarcinoma (LUAD) growth, migration, and the underlying mechanisms. Firstly, in the TCGA dataset for LUAD, ANXA13 is found to be highly expressed in patients with LUAD and high expression of ANXA13 predicted poor outcomes in LUAD patients. Consistently, the data of qRT-PCR showed that the expression of ANXA13 was higher in LUAD cell lines (Calu-3, LTEP-a-2, and NCI-H1395) than that in normal lung cell line BEAS2B. Then, we performed gain- and loss of function of ANXA13 in NCI-H1395 and Calu-3 cells, respectively. The results displayed that deficiency of ANXA13 suppresses cell proliferation, invasion, and migration in Calu-3 cells and overexpression of ANXA13 augments cell proliferation, invasion, and migration in NCI-H1395 cells. Finally, it was found that silencing of ANXA13 obviously raised the protein expression levels of E-cadherin and reduced the protein levels of N-cadherin, Vimentin, and Snail in Calu-3 cells whereas overexpression of ANXA13 obviously receded the protein expression levels of E-cadherin and enhanced the protein levels of N-cadherin, Vimentin, and Snail in NCI-H1395 cells. This study analyzed the biological effects of ANXA13 in LUAD cells, indicating that ANXA13 could regard as a therapeutic target for LUAD.     

蒿甲醚对胃癌细胞增殖、侵袭和迁移的抑制作用研究

目的:研究蒿甲醚对胃癌细胞（AGS和SGC-7901）的增殖、侵袭以及迁移的影响并探讨其分子机制。方法:分别利用MTT、集落形成试验检测胃癌细胞的活力和生长；流式细胞技术检测胃癌细胞的凋亡率；利用细胞侵袭和划痕愈合试验检测胃癌细胞的侵袭和迁移；Western blot检测相关蛋白的表达水平。结果:蒿甲醚（0~800 μmol/L）能够浓度和时间依赖性的抑制 AGS和SGC-7901细胞的增殖（P＜0.05）。集落形成试验以及流式细胞术结果显示蒿甲醚（400 和 600 μmol/L）能够抑制AGS和SGC-7901细胞的生长以及促进细胞凋亡（P＜0.05）。细胞侵袭和划痕愈合试验发现蒿甲醚（400 和 600 μmol/L）能够抑制AGS和SGC-7901细胞的侵袭和迁移（P＜0.05）。Western blot结果显示蒿甲醚(400 和 600 μmol/L)能够增加AGS和SGC-7901细胞的cleaved caspase-3,cleaved caspase-9以及Bax的蛋白水平（P＜0.05）；同时能够抑制N-cadherin 和vimentin的蛋白表达并促进E-cadherin蛋白的表达。结论:蒿甲醚可以显著抑制胃癌细胞的增殖、侵袭以及迁移，其机制可能是与促进细胞凋亡以及抑制上皮间质转化有关。     

miR-182靶向NUMB调控结直肠癌细胞增殖、迁移和侵袭的机制研究

目的:研究miR-182对结直肠癌细胞HT-29增殖、迁移和侵袭的影响，并探讨其机制。方法:运用qRT-PCR检测人正常结肠上皮细胞HCoEpiC、结直肠癌细胞HT-29中miR-182、NUMB的表达；将anti-miR-con组（转染anti-miR-con）、anti-miR-182组（转染anti-miR-182）、pcDNA组（转染pcDNA）、pcDNA-NUMB组（转染pcDNA-NUMB）、anti-miR-182+si-con组（anti-miR-182和si-con共转染）、anti-miR-182+si-NUMB组（anti-miR-182和si-NUMB共转染）均用脂质体法转染HT-29细胞；Western blot检测各组细胞中NUMB的蛋白表达；Transwell检测各组细胞的迁移和侵袭；MTT法检测各组细胞的增殖；双荧光素酶报告基因检测实验检测各组细胞的荧光素酶活性。结果:与人正常结肠上皮细胞HCoEpiC相比，结直肠癌细胞HT-29中miR-182表达显著升高，NUMB表达显著降低（P<0.05）；抑制miR-182、过表达NUMB均可下调HT-29细胞的增殖、迁移、侵袭；NUMB是miR-182的靶标。敲减NUMB可逆转抑制miR-182对HT-29细胞增殖、迁移、侵袭的下调作用。结论:miR-182可促进结直肠癌细胞的增殖、迁移、侵袭，其机制可能与靶向NUMB有关，将可为miR-182靶向治疗结直肠癌提供依据。     

人参皂苷Rg5调控lncRNA-PCAT12抑制胃癌细胞生长实验研究

目的:探讨人参皂苷Rg5通过抑制长链非编码RNA-PCAT12(lncRNA-PCAT12)抑制胃癌(GC)细胞增殖与迁移的价值。方法:对数生长期的人胃癌SNU-1 细胞分为四组,A组,B组与C组加入0.03,0.06,0.09 μmol/L Rg5处理,对照组加入5% DMSO进行处理。MTT法检测细胞增殖、双染法检测细胞凋亡、划痕实验检测细胞迁移、实时定量PCR检测lncRNA-PCAT12表达。结果:处理后24、48、72 h,对照组中lncRNA-PCAT12表达水平和癌细胞增殖指数高于各实验组(P<0.05),C组均低于B组与A组(P<0.05)。实验各组细胞凋亡率均比对照组高(P<0.05),C组比B组与A组高(P<0.05)。转染48 h后,实验各组细胞迁移距离都小于对照组(P<0.05),而C组小于其他两个实验组(P<0.05)。结论:人参皂苷Rg5能通过抑制lncRNA-PCAT12的表达,且高浓度的效果更显著,可通过抑制GC细胞增殖与迁移,促进其凋亡,从而发挥抑癌作用。     

柴胡皂苷D通过抑制EMT和细胞干性抑制人结直肠癌细胞SW480的迁移和侵袭

目的:研究柴胡皂苷D（saikosaponin-D，SSD）对人结直肠癌细胞SW480迁移和侵袭能力的影响，并初步探讨SSD抑制细胞迁移和侵袭的机制。方法:MTT检测SSD对细胞增殖的影响。划痕实验和Transwell迁移实验研究SSD对细胞迁移能力的影响。Transwell侵袭实验研究SSD对细胞侵袭能力的影响。Western-blot检测SSD对上皮间质转化（epithelial mesenchymal transformation，EMT）相关蛋白（E-cadherin、N-cadherin和Vimentin）表达的影响。克隆球形成实验研究SSD对细胞干性的影响。结果:在划痕实验和Transwell迁移实验中，SSD显著抑制SW480的迁移能力（P<0.05）。在Transwell侵袭实验中，SSD显著抑制SW480的侵袭能力（P<0.05）。SSD处理后，细胞E-cadherin的表达增高，N-cadherin和Vimentin的表达降低（P<0.05），同时SSD抑制SW480细胞克隆球的形成（P<0.05）。结论:柴胡皂苷D通过抑制EMT和细胞干性抑制人结直肠癌细胞SW480的迁移和侵袭。     

A Bipolar-Bisection Piecewise Encoding Scheme for Multi-Source Reverse Time Migration

Conventional shot-record reverse time migration (RTM) suffers from a high computational burden when dealing with massive data. The computational cost of RTM can be reduced by shot-encoding techniques, and plane-wave encoding is a commonly used and effective shot-encoding scheme. However, plane-wave encoding requires long time padding to avoid information loss, which decreases the efficiency of the time-domain wavefield extrapolator, and the time padding becomes longer with the increasing distance between multiple sources. The piecewise plane-wave encoding scheme cuts multiple sources into several segments prior to implementing plane-wave encoding, hence reduces the time padding, but brings new crosstalk due to the mutual interference between shots in different source segments. We suppress the crosstalk artifacts by a new bipolar-bisection amplitude encoding method, in which half of the encoding array of each migration is different from that of any other migrations to reduce the number of crosstalk terms with as few migrations as possible. We embed the bipolar-bisection method into piecewise plane-wave encoding. Compared with plane-wave encoding, the proposed scheme requires considerably shorter time padding and thus works more efficiently and can generate a qualified imaging result. The feasibility of the proposed method is tested on the 2D SEG/EAGE salt model and the Marmousi model.