竖脊肌平面阻滞超前镇痛对老年胸腔镜肺癌根治术患者心肌的保护作用

目的探讨竖脊肌平面阻滞（ESPB）超前镇痛对老年胸腔镜肺癌根治术患者心肌的保护作用。 方法选择在惠州市中心人民医院择期行胸腔镜肺癌根治术的老年患者40例，按照患者意愿分组，其中19例采用ESPB联合全身麻醉（观察组），21例采用单纯全身麻醉（对照组）。在两组诱导前（T0）、手术开始1 h（T1）、手术结束时（T2）及术后4 h（T3）检测患者的肌钙蛋白Ⅰ（cTnⅠ）、心型脂肪酸结合蛋白（H-FABP）、肌酸激酶同工酶（CK-MB），并记录各时间点的平均动脉压（MAP）和心率。计量资料的组间比较采用t检验，重复测量资料采用重复测量方差分析。 结果两组患者MAP、心率、cTnⅠ、H-FABP、CK-MB的差异均呈现组间效应、时间效应和交互效应（MAP：F=24.021、33.512、9.184，心率：F=10.340、46.992、3.494，cTnⅠ：F=5.354、691.994、64.177，H-FABP：F=7.906、14.067、11.560，CK-MB：F=15.926、84.106、4.116，P<0.05或0.01）。与T0时间点比较，两组患者T1、T2、T3时间点MAP、心率、H-FABP、CK-MB均出现明显变化（P<0.05），T2、T3时间点cTnⅠ出现明显变化（P<0.05）。 结论老年胸腔镜肺癌根治术中应用ESPB超前镇痛，可明显降低心肌损伤相关因子水平，起到心肌保护作用。     

Effects of Cinnamomum camphora Leaves Extracts-Flocculants Composite Algaecide on Microcystis aeruginosa Growth and Microcystins Release

Bulletin of Environmental Contamination and Toxicology - In this study, a composite algaecide containing flocculants and Cinnamomum. camphora leaves extracts (CCCLE) were synthesized. The...     

综合医院发热门诊应对新型冠状病毒肺炎的应急管理

目的 探讨综合医院发热门诊应对新型冠状病毒感染肺炎的应急管理方法及效果。 方法 加强发热门诊的管理，包括优化发热预检分诊工作流程、合理布局发热门诊、修订发热门诊工作职责与流程指引、合理调配人力资源、加强相关人员培训、严格落实院感防控措施、提供后勤保障、加强健康宣教与管理。 结果 接诊患者13 761例次，采集咽拭子591例次，静脉输液11 973例次，氧气吸入998例次。 结论 加强综合医院发热门诊管理，能有效提高护理人员对新型冠状病毒肺炎疫情的应对能力，保障护理安全。     

GOLPH3蛋白在新疆哈萨克族食管鳞癌中的表达及其临床意义

目的:研究GOLPH3蛋白在新疆哈萨克族（哈族）食管鳞癌中的表达及其临床意义。方法:本次研究选取50例术前未经放化疗干预且手术切除的新疆哈族食管鳞癌组织及50例哈族癌旁相对正常食管组织作为研究对象，截止日期为2018年6月，应用免疫组织化学技术，检测GOLPH3蛋白在哈族食管鳞癌组织及癌旁组织的表达特点及情况。结果:GOLPH3蛋白在哈族食管鳞癌组织的表达率为70.0%，高于癌旁正常组织28.0%，差异具有统计学意义(P=0.001)；低分化组阳性表达率82.9%高于高分化组40.0%，差异具有统计学意义(P=0.02)；淋巴结转移组阳性表达率85.3%高无淋巴结转移组37.5%，差异具有统计学意义(P=0.01)；临床分期在Ⅲ-Ⅳ组阳性表达率83.3%，高于Ⅰ-Ⅱ组的50.0%，差异具有统计学意义(P=0.012)；男性组中GOLPH3蛋白的表达阳性率为64.7%，女性组为81.3%，差异无统计学意义(P=0.234)；高龄组（≥60岁）GOLPH3蛋白的表达阳性率79.2%，低龄组（＜60岁）为61.5%，差异无统计学意义(P=0.174)。结论:GOLPH3蛋白的表达可能与哈族食管鳞癌的分化、增殖和转移等过程有关。     

MicroRNA‐375‐3p enhances chemosensitivity to 5‐fluorouracil by targeting thymidylate synthase in colorectal cancer

Resistance to chemotherapy is a major challenge for the treatment of patients with colorectal cancer (CRC). Previous studies have found that microRNAs (miRNAs) play key roles in drug resistance; however, the role of miRNA‐373‐3p (miR‐375‐3p) in CRC remains unclear. The current study aimed to explore the potential function of miR‐375‐3p in 5‐fluorouracil (5‐FU) resistance. MicroRNA‐375‐3p was found to be widely downregulated in human CRC cell lines and tissues and to promote the sensitivity of CRC cells to 5‐FU by inducing colon cancer cell apoptosis and cycle arrest and by inhibiting cell growth, migration, and invasion in vitro. Thymidylate synthase (TYMS) was found to be a direct target of miR‐375‐3p, and TYMS knockdown exerted similar effects as miR‐375‐3p overexpression on the CRC cellular response to 5‐FU. Lipid‐coated calcium carbonate nanoparticles (NPs) were designed to cotransport 5‐FU and miR‐375‐3p into cells efficiently and rapidly and to release the drugs in a weakly acidic tumor microenvironment. The therapeutic effect of combined miR‐375 + 5‐FU/NPs was significantly higher than that of the individual treatments in mouse s.c. xenografts derived from HCT116 cells. Our results suggest that restoring miR‐375‐3p levels could be a future novel therapeutic strategy to enhance chemosensitivity to 5‐FU.     

硬膜外麻醉与椎旁神经阻滞非气管插管单孔胸腔镜手术效果比较

目的比较硬膜外麻醉与椎旁神经阻滞非气管插管单孔胸腔镜手术的效果。方法选择2017年11月至2019年6月锦州医科大学附属第一医院收治的45例采用非气管插管麻醉单孔胸腔镜手术的肺部良恶性肿瘤患者,采用随机数字表法分为椎旁神经阻滞组(22例)与硬膜外麻醉组(23例)。麻醉诱导前,椎旁神经阻滞组均于超声引导下阻滞胸3~6棘突旁神经根;硬膜外麻醉组均于胸6~7或7~8间隙行硬膜外穿刺置管麻醉。比较两组手术时间、术中出血量、术后定向力恢复时间、下床活动时间、带管时间、出院时间及相关并发症。结果两组患者手术时间、术中出血量差异均无统计学意义(均P>0.05)。与硬膜外麻醉组相比,椎旁神经阻滞组术后定向力恢复时间[(7.22±2.20)min比(18.80±5.06)min]、下床活动时间[(11.45±3.01)h比(21.90±4.61)h]、带管时间[(2.77±0.81)d比(5.47±1.31)d]、出院时间[(3.68±0.84)d比(6.17±1.03)d]均缩短,两组差异均有统计学意义(t值分别为-9.874、-8.763、-8.282、-7.594,均P<0.05)。椎旁神经阻滞组术后未发生低氧血症、低血压、肺部并发症、恶心、呕吐、尿潴留等相关并发症。结论非气管插管单孔胸腔镜手术中采用椎旁神经阻滞术后恢复快、并发症少,临床上可优先选择,有助于快速康复。     

Berberine diminishes cancer cell PD-L1 expression and facilitates antitumor immunity via inhibiting the deubiquitination activity of CSN5

Programmed cell death-1 (PD-1)/programmed cell death ligand-1 (PD-L1) blocking therapy has become a major pillar of cancer immunotherapy. Compared with antibodies targeting, small-molecule checkpoint inhibitors which have favorable pharmacokinetics are urgently needed. Here we identified berberine (BBR), a proven anti-inflammation drug, as a negative regulator of PD-L1 from a set of traditional Chinese medicine (TCM) chemical monomers. BBR enhanced the sensitivity of tumour cells to co-cultured T-cells by decreasing the level of PD-L1 in cancer cells. In addition, BBR exerted its antitumor effect in Lewis tumor xenograft mice through enhancing tumor-infiltrating T-cell immunity and attenuating the activation of immunosuppressive myeloid-derived suppressor cells (MDSCs) and regulatory T-cells (Tregs). BBR triggered PD-L1 degradation through ubiquitin (Ub)/proteasome-dependent pathway. Remarkably, BBR selectively bound to the glutamic acid 76 of constitutive photomorphogenic-9 signalosome 5 (CSN5) and inhibited PD-1/PD-L1 axis through its deubiquitination activity, resulting in ubiquitination and degradation of PD-L1. Our data reveals a previously unrecognized antitumor mechanism of BBR, suggesting BBR is small-molecule immune checkpoint inhibitor for cancer treatment.