目的 探讨以跨肺压导向的呼气末正压通气在急性呼吸窘迫综合征(acute respiratory distress syndrome,ARDS)的临床应用效果。方法 将2020年1月—10月重症医学科收治的100例ARDS患者随机分为对照组和观察组各50例,对照组采用小潮气量辅助控制通气治疗,观察组以跨肺压(transpulmonary pressure,Ptp)为导向选择最佳呼气末正压(positive end-expiratory pressure,PEEP)进行机械通气治疗,观察比较两组患者治疗前和治疗48 h的呼吸动力学指标、血气分析指标,随访28 d病死率。结果 治疗48 h,潮气量、PEEP、肺静态顺应性、PaCO₂、PaO₂、SaO₂、PaO₂/FiO₂观察组明显高于对照组(P＜0.05);随访28 d病死率观察组和对照组比较差异无统计学意义(P＞0.05)。结论 以Ptp为导向选择最佳PEEP的机械通气治疗ARDS可以有效改善患者的呼吸动力学指标和血气分析指标,不增加ARDS的病死率,值得临床推广应用。

Objective To investigate the clinical effect of positive end-expiratory pressure(PEEP) ventilation guided by transpulmonary pressure (Ptp) in acute respiratory distress syndrome (ARDS). Methods Between January and October 2020, 100 cases of ARDS treated in intensive care unit were randomly divided into control group and observation group with 50 cases each. Control group used auxiliary control small tidal volume ventilation therapy, and observation group used the best PEEP mechanical ventilation therapy with the guiding of Ptp. The respiratory dynamics index, blood gas analysis results, follow-up of 28d case fatality rate before and 48h after treatment between the two groups were compared. Results After 48h of treatment, tidal volume、PEEP、pulmonary static compliance、PaCO₂、PaO₂、SaO₂、PaO₂/FiO₂ of the observation group were all higher than those of the control group (P<0.05). There was no statistically significant difference in mortality between the two groups at 28d follow-up (P＞0.05). Conclusion Mechanical ventilation with the best PEEP guided by Ptp could effectively improve the respiratory dynamic index and blood gas analysis results of patients with ARDS, without increasing the mortality of ARDS, which is worthy of clinical application.

目的 探究超声-微泡介导的miR-128通过调节PTEN对乳腺癌细胞阿霉素耐药的影响。方法 qPCR检测miR-128在乳腺癌细胞系中的表达,并利用结合微泡的miR-128质粒(质粒+超声+SF6微泡)转染细胞,探究超声-微泡介导的miR-128对乳腺癌细胞阿霉素耐药的影响。CCK8实验检测乳腺癌细胞的活性;qPCR检测过表达miR-128后对PTEN的影响和对乳腺癌细胞阿霉素耐药的影响。结果 miR-128在阿霉素耐药乳腺癌细胞中低表达;过表达miR-128能够增加乳腺癌细胞对阿霉素的敏感性,超声-微泡介导的miR-128进一步增强了乳腺癌细胞对阿霉素的敏感性;miR-128通过调节PTEN从而促进乳腺癌细胞对阿霉素耐药。结论 miR-128过表达可以增强乳腺癌对阿霉素的敏感性,超声-微泡介导的miR-128进一步增强了乳腺癌细胞对阿霉素的敏感性,本研究为乳腺癌阿霉素耐药的治疗提供了新的分子靶标和治疗途径。

Objective To explore the effect of ultrasound-microbubble mediated miR-128 on doxorubicin resistance in breast cancer cells by regulating PTEN. Methods Quantitatine PCR (qPCR) was used to detect the expression of miR-128 in breast cancer cell lines, and the ultrasound-microbubble combined miR-128 plasmid(plasmid+ultrasound+SF6 microbubbles) was used to transfect the cells to explore the effects of ultrasound-microbubble mediated miR-128 on doxorubicin resistance in cancer cells. The CCK8 experiment was used to detect the activity of breast cancer cells; qPCR was used to detect the effect of overexpression of miR-128 on PTEN and the effect on doxorubicin resistance of breast cancer cells. Results miR-128 was under-expressed in doxorubicin-resistant breast cancer cells; overexpression of miR-128 increased the sensitivity of breast cancer cells to doxorubicin,ultrasound-microbubble mediated miR-128 further enhanced breast cancer cells sensitivity to doxorubicin; miR-128 promote resistance to doxorubicin in breast cancer cells by regulating PTEN. Conclusion Overexpression of miR-128 could enhance the sensitivity of breast cancer to doxorubicin. Ultrasound-microbubble mediated miR-128 further enhanced the sensitivity. This study provided a treatment for doxorubicin resistance in breast cancer with new molecular targets and therapeutic approaches.

目的 通过生物信息学方法,分析阿司匹林抗结直肠癌的作用机制。方法 在DrugBank 5.1.5中查找阿司匹林的直接作用蛋白靶点(direct protein targets,DPTs);构建阿司匹林DPTs的蛋白质-蛋白质相互作用(protein-protein interaction,PPI)网络并分析相关信号通路;从GEO数据库中获取结直肠癌表达谱芯片数据,筛选中心度最高的20个结直肠癌差异表达基因作为Hub基因;将DPTs相互关联基因与结直肠癌Hub基因求交集,确认阿司匹林抗结直肠癌的潜在作用靶点,分析其在TCGA数据库结肠腺癌样本中的表达情况,并进行GO功能富集分析和KEGG信号通路分析。最终通过RT-PCR和WB实验验证阿司匹林抗结直肠癌的潜在靶点。结果 在DrugBank 5.1.5中确定了11个阿司匹林DPTs,KEGG信号通路分析发现其中6个DPTs(EDNRA,IKBKB,NFKB2,NFKBIA,PTGS2,TP53)与癌症的发生发展有关。将DPTs相关联基因与筛选的20个结直肠癌Hub基因求交集,发现5个基因(CDK1,AURKA,CCNB1,MAD2L1,TPX2)可能是阿司匹林抗结直肠癌的潜在作用靶点,其在TCGA数据库结肠腺癌样本中均表达上调,基因功能主要富集于细胞周期调控。RT-PCR和WB实验结果显示阿司匹林可以降低人结肠癌细胞中CDK1,AURKA,CCNB1,MAD2L1,TPX2的mRNA水平和蛋白表达。结论 CDK1,AURKA,CCNB1,MAD2L1,TPX2可能是阿司匹林抗结直肠癌的潜在靶点,其可能通过影响细胞周期调控发挥抗肿瘤作用。

Objective To analyze the mechanism of aspirin against colorectal cancer(CRC)by bioinformatic analysis. Methods DrugBank 5.1.5 was used to identify direct protein targets (DPTs) of aspirin. The protein-protein interaction (PPI) network of DPTs was constructed and involved signaling pathways were analyzed. CRC-associated gene expression datasets were downloaded from GEO database, and the top twenty differentially expressed genes with the highest degree were screened out as Hub genes. Common genes between the genes associated with the DPTs and the Hub genes of CRC were the potential targets of aspirin against CRC. The potential targets in TCGA database colon adenocarcinoma (COAD) samples were examined. GO functional enrichment analysis and KEGG signaling pathway analysis of the potential targets were performed. The potential targets of aspirin against CRC cells were verified by reverse transcription-polymerase chain reaction (RT-PCR) and western blot (WB). Results Eleven DPTs of aspirin were identified in DrugBank 5.1.5. KEGG signaling pathway showed that 6 genes (EDNRA, IKBKB, NFKB2, NFKBIA, PTGS2, TP53) were associated with the occurrence and development of CRC. By intersecting 20 Hub genes of CRC with genes associated with the DPTs of aspirin, it was found that 5 genes (CDK1, AURKA, CCNB1, MAD2L1, TPX2) might be the potential targets of aspirin against CRC. They were all up-regulated in TCGA-COAD samples, and the gene functions were mainly enriched in cell cycle regulation. The results of RT-PCR and WB showed that aspirin could down-regulate the mRNA and protein expression levels of CDK1, AURKA, CCNB1, MAD2L1 and TPX2 in human colon cancer cells respectively. Conclusion CDK1, AURKA, CCNB1, MAD2L1 and TPX2 could be potential targets of aspirin against CRC by affecting the progress of cell cycle regulation.

目的 探讨分析30岁及以下青年乳腺癌患者术后首次复发转移特点,以期指导术后随访,早期发现转移病灶。方法 回顾性分析2003年1月—2018年8月在梅州市人民医院收治的年龄≤30岁乳腺癌患者73例,所有患者均行根治性手术治疗,分析临床病理特点及术后首次复发转移特点。结果 共纳入23例三阴性(31.5%)、20例luminal B(HER2-)型(27.4%)、12例HER-2阳性型(16.4%)、10例 Luminal B(HER2+)型(13.7%)、4例Luminal A型(5.5%)和4例分型不明(5.5%)。中位随访28.4个月,7例三阴性(7/23, 30.4%)、 6例HER-2阳性型(6/12, 50.0%)、 4例Luminal B(HER2-)型(4/20, 20.0%) 和3例 Luminal B(HER2+)型(3/10, 30.0%)出现复发转移。复发转移患者中,90.0%合并远处转移,75.0%合并内脏转移,其中HER-2阳性型均合并内脏转移;92.3%(12/13)激素受体阴性患者复发转移发生在术后2年内。三阴性患者最常见远处转移部位是远处淋巴结,HER-2阳性型患者最常见远处转移部位是肝,luminal B(HER2+)型患者最常见远处转移部位是肺和骨,luminal B(HER2-)型患者最常见远处转移部位是肺和远处淋巴结。结论 ≤30岁青年乳腺癌患者术后首次复发转移多合并远处转移,激素受体阴性患者容易早期复发,不同分子分型患者具有不同的好发远处转移部位。

Objective We retrospectively investigated the first recurrent pattern after radical surgery in breast cancer patients aged ≤30 years, so as to guide postoperative follow-up and early detection of recurrent lesions. Methods A total of 73 consecutive early breast cancer patients aged ≤30years admitted to Meizhou People's Hospital from January 2003 to August 2018 were included. Retrospective analysis was conducted to analyze the clinicpathologic characteristics and characteristics of first recurrent pattern. Results 23 triple negative(31.5%), 20 Luminal B(27.4%), 12 HER2 enriched (16.4%), 10 Luminal/HER2+(13.7%), 4 Luminal A(5.5%) and 4 undifined subtypes(5.5%) were included. After a median follow-up of 28.4 months, 20 patients relapsed, which included 7 triple-negative(7/23, 30.4%), 6 HER2-enriched (6/12, 50.0%), 4 luminal B(4/20, 20.0%) and 3 luminal/HER2+(3/10, 30.0%) subtypes. 90.0% of patients combined with distant metastasis. 75.0% of patients had visceral metastasis, which included all the recurrent HER-2 enriched patients. 92.3% of hormone receptor negative(HR-) patients had a RFS less than 2 years. The most common metastatic sites in triple-negative, HER-2-enriched, luminal/HER2+ and luminal B subtypes were distant nodes, liver, lung and bone, distant nodes and lung, respectively. Conclusion The first recurrent pattern mainly presented as distant metastasis in breast cancer patients aged≤30 years, with early relapse in patients with HR- diseases. Different molecular subtypes of breast cancer favor different distant metastatic sites.

目的 探讨替诺福韦酯单药治疗在慢性乙型肝炎(CHB)后肝硬化失代偿期(DCC)治疗中的长期应用价值。方法 随机将84例CHB后DCC患者分为对照组及观察组,每组42例。对照组接受拉米夫定联合阿德福韦酯治疗,观察组接受替诺福韦酯治疗。对比两组12个月内治疗时间内的死亡率及肝癌发生率,并分析两组肝功能、肝硬化指标及Child-Pugh评分变化趋势,同时对比两组治疗过程中HBeAg转阴率、HBV-DNA转阴率及失代偿好转率。此外,对比两组治疗不良反应的发生率。结果 在12个月的治疗时间内,两组死亡率及肝癌发生率比较,差异无统计学意义(P>0.05)。而两组治疗过程中ALT、AST、HA、LN、PCⅢ及Child-Pugh评分呈降低趋势,ALB呈升高趋势(P<0.05);治疗6个月及12个月时,治疗组ALT、AST、HA、LN、PCⅢ及Child-Pugh评分低于对照组,ALB高于对照组(P<0.05)。而两组12个月治疗完成后,HBeAg转阴率比较差异无统计学意义,但观察组HBV-DNA转阴率高于对照组(P<0.05)。此外,两组治疗不良反应发生率比较差异无统计学意义(P>0.05)。结论 在CHB后DCC的治疗中,替诺福韦酯单药治疗方案具有良好的长期治疗效果。

Objective To evaluate the long-term value of tenofovir disoproxil monotherapy in the decompensated cirrhosis(DCC) after chronic hepatitis B(CHB). Methods Eighty-four patients with DCC after CHB were randomly divided into control group and observation group, 42 cases in each group. The control group received lamivudine combined with adefovir dipivoxil, and the observation group received tenofovir disoproxil. Mortality and incidence of liver cancer within 12 months of treatment between the two groups were compared, and the change trend of liver function, liver fibrosis index and child-pugh score in the two groups were analyzed. At the same time,we compared the conversion rate of HBeAg, HBV-DNA and decompensated positive rate between the two groups. In addition, the incidence of adverse reactions were compared between the two groups. Results Within 12 months of treatment, there were no statistically significant differences in mortality and liver cancer incidence between the two groups(P>0.05). And during the treatment, the ALT, AST, HA, LN, PC Ⅲ and Child-Pugh score showed a decrease trend, ALB showed a increase trend(P<0.05). After 6-month and 12-month treatment, ALT, AST, HA, LN, PC Ⅲ Child-Pugh score of treatment group were lower than that of control group, ALB was higher than that of control group(P<0.05). After 12 months of treatment, the negative conversion rate of HBV-DNA in the observation group was higher than that of control group(P<0.05). In addition, there was no statistically difference in the incidence of adverse reactions between the two groups(P>0.05). Conclusion Tenofovir disoproxil monotherapy has a good long-term therapeutic effect in the treatment of DCC after CHB.

目的 统计分析中医治疗胎动不安的用药规律,为临床中医治疗胎动不安提供用药参考。方法 严格按照标准筛选中医治疗胎动不安的中药处方,采用 excel表格对处方基本用药信息进行统计,然后再采用 SPSS19.0软件以中药的功效作为评价指标进行分析,以确定处方中用药味数、用药天数、以及中药的使用频次。并对使用频次前30位的药物进行归类,确定药物使用频次高的特征值、贡献率和综合得分。结果 所选取的356例患者中药处方中,平均用药药味数15.7味,平均剂量226.7 g,使用频次最高的前5位药分别为菟丝子、桑寄生、续断、白芍、白术;30味中药通过按照功效可分为5类,所提取的10个主成分能反映系统聚类中的分类结果。结论 对中医治疗胎动不安患者处方进行分析,为中医治疗胎动不安提供了用药参考,对指导临床合理用药有重要指导意义。

Objective To analyze the medication experience in treating fetal irritability and provide medication reference of clinical traditional Chinese medicine in treatment of fetal irritability. Methods The prescription of traditional Chinese medicine treats was screened according to the standard. The information of prescription basic were statisticed with Excel and processed the data by SPSS19.0, to determine the frequency of medicine the number of drugs and medication days. The Chinese medicines used in the top 30 were classified to determine the characteristic of eigenvingue,rate of contribution and synthesis score. Results The top 5 highest frequency medicines were Tusizi, Sanjisheng, Xuduan, Baishao, Baishu; and the average drug taste was 15.7,the average dose was 226.7 g,after analyzing the screened 356 prescriptions. 30 Chinese medicines could be clustered into 5 kinds. The extraction of 10 principal components of principal component scores and comprehensive scores may reflect the classification results of system clustering. Conclusion To analyze the prescriptions of traditional Chinese medicine for fetal irritability, provide the reference for medicine combination in treating different syndromes of fetal irritability. It had the extremely vital significance for guiding the clinical medication.

目的 检测外周血循环肿瘤细胞(circulating tumor cell, CTC)在原发性肝癌患者中的表达情况,并探讨CTC动态变化及其相对于甲胎蛋白(Alpha fetoprotein AFP)对原发性癌患者术后复发转移的预测作用。方法 收集原发性肝癌患者134例,肝脏良性病变患者72例,检测外周血 CTC 数目,同时检测AFP的表达水平,分析 CTC 与 AFP 的相关性。然后在134名原发性肝癌患者中筛选出成功行肝癌根治术的患者,共86例,检测这86名患者术前、术后外周血CTC和AFP,分析CTC和AFP对原发性肝癌术后复发转移的评估价值。结果 原发性肝癌患者外周血CTC阳性率高于肝脏良性病变患者,差异有统计学意义(P＜0.05);原发性肝癌患者CTC水平与AFP水平、淋巴结转移、肿瘤结节多少有关,与年龄、性别、肿瘤直径、分化程度、肝硬化有无、TNM分期无关;原发性肝癌患者CTC和AFP生存分析显示,原发性肝癌根治术后早期复发转移与CTC和AFP密切相关;CTC较阳性对术后复发转移具有更好的诊断价值,二者联合对复发转移预测价值最高。结论 CTC可以做为一个比传统肿瘤标志物更好的对原发性肝癌术后复发转移进行监测的指标,与肿瘤标志物联合检测预测价值更高。

Objective To detect the expression of peripheral blood circulating tumor cells CTC in patients with primary liver cancer and to explore the dynamic changes of CTC and its predictive effect on postoperative recurrence and metastasis of primary cancer. Methods The number of CTC in peripheral blood was measured in 134 patients with primary liver cancer and 72 patients with benign liver disease, the expression of AFP was detected, and the correlation between CTC and AFP was analyzed. Then 86 patients with primary liver cancer were selected from 134 patients with primary liver cancer who underwent radical hepatectomy. The values of CTC and AFP in evaluating recurrence and metastasis of primary liver cancer before and after operation were analyzed by CTC and AFP, in peripheral blood of these 86 patients. Results The positive rates of CTC in peripheral blood of patients with primary liver cancer were higher than that of patients with benign liver disease(P< 0.05). The levels of CTC in patients with primary liver cancer were related to AFP level, lymph node metastasis and the number of tumor nodules, but not to age, sex, tumor diameter, differentiation degree, liver cirrhosis and TNM stage. The survival analysis of CTC and AFP in patients with primary liver cancer showed that the early recurrence and metastasis of primary liver cancer after radical resection were closely related to the positive rate of CTC and AFP, and the positive rate of CTC was more effective than that of AFP positive in the diagnosis of recurrence and metastasis after operation, and the combination of the two had the highest predictive value for recurrence and metastasis. Conclusion CTC may be used as a better index to monitor postoperative recurrence and metastasis of primary liver cancer than traditional tumor markers. The combined detection prediction value of tumor markers is higher.

介绍我院应对新型冠状病毒感染防控工作的护理管理措施,包括发热病区的组建,护理应急队伍的建设,工作流程指引的修订和完善,院感防护措施的严格落实,后勤保障的严密管理等,并进行护理质量控制与持续改进,为其他医院的防控工作提供借鉴。

It introduces nursing management measures of novel coronavirus infection prevention and control in our hospital, including the establishment of fever ward, the construction of nursing emergency team, the revision and improvement of working process guidelines, the strict implementation of hospital sensory protection measures, tight management of logistical support, and quality control and continuous improvement of nursing. It offers experiences for other hospitals.

目的 分析广州血液中心以“生日献血纪念章”(下称生日纪念章)个性化专属纪念品对献血者的招募保留效果进行分析和研究。方法 2017年—2019年期间,广州血液中心生日当天献血者共11 790名,每半年生日当天献血的献血者人数,绘制折线图,分析2018年7月起“生日纪念章”活动前后,生日当天献血的献血者人数变化;卡方检验对比2组献血人群特征差异,分析该活动敏感人群。结果 2017年—2019年每半年生日当天献血人数总体持续增长,其中2018年7—12月较2018年1—6月,生日当天献血人数增长了406%,增长比例最大。活动前后2组人群性别、年龄、职业及既往献血次数分布差异均有统计学意义(P<0.05)。活动后男性、35岁及以上献血者、工人/职员及其他职业,固定献血者比例增加。结论 广州血液中心的“生日纪念章”活动对生日当天献血有明显的促进效果,其中,男性,年龄35岁及以上,工人/职业/其他职业及固定献血者对该活动更敏感,更可能选择生日当天献血。今后针对女性、25岁以下、学生及初次献血者,注意增加其他招募保留措施。

Objective To analyze the effect of the “Birthday Blood Donation Medal” (hereinafter referred to as the Birthday Medal) personalized souvenir to the blood donor recruitment and retention effect of blood donors in Guangzhou Blood Center. Methods From 2017 to 2019, there were a total of 11 790 blood donors donated blood on their birthday in Guangzhou Blood Center. Aline chart was drawn of the number of blood donors who donated blood on birthday to observe the trends every half a year from 2017 to 2019; Chi-square test was used to compare the characteristics of blood donors in two groups (before and after the “Birthday Blood Donation Medal” activity) and we analyzed the sensitive population of the activity. Results The number of blood donors on the birthday every half year from 2017 to 2019 continued to increase. Among them, the number of blood donors donated on birthday on July-December 2018 increased by 406% compared to the first six months of 2018, which was the largest increase. The differences in gender, age, occupation, and previous blood donation times between the two groups were statistically significant (P<0.05). After the activity, the percentage of male, 35-year-old and above blood donors, workers/clerks and other occupations, and regular blood donors increased. Conclusion The “Birthday Blood Donation Medal” activity in Guangzhou Blood Center has a significant promotion effect on blood donation on birthday. Among them, males, aged 35 and above, workers/occupations/other occupations and regular blood donors are more sensitive to this activity and are more likely to donate blood on birthday. In the future, other recruitment and retention measures should be taken to pay attention to women, under 25 years old, students and first-time blood donors.

目的 探讨影响孕晚期死胎伴胎动减少延迟就诊的临床因素,加强围产期宣教。方法 回顾性分析2017年1月—2019年10月广州市妇女儿童医疗中心住院分娩的孕晚期(孕周≥28周)单胎死胎病例的相关临床资料。结果 在79例死胎中,有59例(74.68%)孕妇感知胎动减少,但只有27人(45.76%)在感知胎动减少后24小时内就诊。妊娠未合并胎儿生长受限可能会导致延迟就诊(P=0.03<0.1)。结论 胎动减少和死胎发生密切相关,但大部分孕妇可能会出现延迟就诊。加强孕期产检,规范孕期宣教,尤其是合并胎儿生长受限等高危妊娠时的孕期严密监测,强调胎动的重要性,在感知胎动减少后强调早期就诊,有助于减少孕晚期死胎风险。

Objective To explore the clinical factors that affect the consultation time of stillbirth after perceptive reduction of fetal movement in the third trimester of pregnancy, and to strengthen the perinatal education. Methods A retrospective analysis of single stillbirth in late pregnancy (gestational weeks≥ 28 weeks) in Guangzhou Women and Children's Medical Center from January 2017 to October 2019 was taken, and the relevant clinical data were summarized and evaluated. Results Out of 79 stillbirth cases, 59 (74.68%) cases had decreased fetal motility. Only 27 pregnant women (45.76%) visited the doctor in 24 hours after they perceived the reduction of fetal movement. Pregnancy without fetal growth restriction may lead to delayed consultation (P=0.03<0.1). Conclusion Perception of decreased fetal movement is closely related to the occurrence of stillbirth, but most pregnant women may have delayed visits. To strengthen the prenatal examination, standardize the propaganda and education during pregnancy, especially the close monitoring of high-risk pregnancy such as fetal growth restriction, emphasize the importance of fetal movement, and emphasize the early consultation after perceiving the reduction of fetal movement, are helpful to reduce the risk of stillbirth in late pregnancy.