87例早孕期绒毛膜隆起的超声特征和妊娠结局分析

目的 探讨早孕期绒毛膜隆起对妊娠结局的影响.方法 回顾性分析在该院进行早孕期超声检查的孕妇43136例,其中绒毛膜隆起病例87例,纳入绒毛膜隆起组,其余早孕期孕妇,剔除多胎妊娠和辅助生殖妊娠,抽取650例纳入对照组.分析比较两组孕妇超声图像,对比两组孕妇早孕停育率与后续妊娠结局;将绒毛膜隆起组以病灶直径小于10 mm和大于或等于10 mm为标准分组,比较两组病例的妊娠结局.结果 绒毛膜隆起发生率为0.20％.87例绒毛膜隆起病例,早孕期停育17例(19.50％),46例绒毛膜隆起继续妊娠后续自然流产5例,占10.87％,与对照组比较差异均有统计学意义(P<0.05);绒毛膜隆起组的胎儿畸形发生率与对照组相比较,差异无统计学意义(P>0.05);绒毛膜隆起病灶的大小与早孕期停育和后续妊娠结局无相关性,差异均无统计学意义(P>0.05).结论 绒毛膜隆起的发生率极低,可能是妊娠流产的危险因素,超声检查为绒毛膜隆起的诊断提供了重要的影像学依据.     

微小RNA-545-3p对结直肠癌细胞进展的影响研究

目的 研究微小RNA-545-3p在结直肠癌(CRC)进展中的作用和调控机制。方法 正常培养的人结直肠黏膜上皮细胞系NCM460以及人CRC细胞系(HCT-15、HCT-116和HCT-8)分为NCM460组、HCT-15组、HCT-116组和HCT-8组。将miR-545-3p模拟物、模拟物阴性对照、miR-545-3p抑制剂、抑制剂阴性对照和血管内皮生长因子A(VEGFA)过表达载体、miR-545-3p模拟物和VEGFA过表达载体分别转染至HCT-116细胞，分别为miR-545-3p mimic组、mimic-NC组、miR-545-3p inhibitor组、inhibitor-NC组、mimic-NC+VEGFA组、miR-545-3p mimic+VEGFA组。以实时定量逆转录聚合酶链反应(qRT-PCR)法检测CRC患者癌组织和细胞系中miR-545-3p和VEGFA的表达水平。以细胞计数法-8(CCK-8)检测细胞增殖能力；以Transwell实验检测细胞迁移和侵袭能力；以原位末端标记(TUNEL)法检测细胞的凋亡；以蛋白质印迹(Western blot)法检测B淋巴...     

Knockdown of DEAD-box 51 inhibits tumor growth of esophageal squamous cell carcinoma via the PI3K/AKT pathway

BACKGROUND Esophageal squamous cell carcinoma(ESCC)is one of the most prevalent malignancies that seriously threaten people’s health worldwide.DEAD-box helicase 51(DDX51)is a member of the DEAD-box(DDX)RNA helicase family,and drives or inhibits tumor progression in multiple cancer types.AIM To determine whether DDX51 affects the biological behavior of ESCC.METHODS The expression of DDX51 in ESCC tumor tissues and adjacent normal tissues was detected by Immunohistochemistry(IHC)analyses and quantitative PCR(qPCR).We knocked down DDX51 in ESCC cell lines by using a small interfering RNA(siRNA)transfection.The proliferation,apoptosis,and mobility of DDX51 siRNAtransfected cells were detected.The effect of DDX51 on the phosphoinositide 3-kinase(PI3K)/AKT pathway was investigated by western blot analysis.A mouse xenograft model was established to investigate the effects of DDX51 knockdown on ESCC tumor growth.RESULTS DDX51 exhibited high expression in ESCC tissues compared with normal tissues and represented a poor prognosis in patients with ESCC.Knockdown of DDX51 induced inhibition of ESCC cell proliferation and promoted apoptosis.Moreover,DDX51 siRNA-expressing cells also exhibited lower migration and invasion rates.Investigations into the underlying mechanisms suggested that DDX51 knock down induced inactivation of the PI3K/AKT pathway,including decreased phosphorylation levels of phosphate and tensin homolog,PI3K,AKT,and mammalian target of rapamycin.Rescue experiments demonstrated that the AKT activator insulin-like growth factor 1 could reverse the inhibitory effects of DDX51 on ESCC malignant development.Finally,we injected DDX51 siRNA-transfected TE-1 cells into an animal model,which resulted in slower tumor growth.CONCLUSION Our study suggests for the first time that DDX51 promotes cancer cell proliferation by regulating the PI3K/AKT pathway;thus,DDX51 might be a therapeutic target for ESCC.     

丹参酮生物合成相关SmERF108转录因子的鉴定及其靶基因分析＊

目的 鉴定与丹参酮合成相关转录因子AP2/ERF家族中SmERF108转录因子，并分析转录因子SmERF108的靶基因。方法 利用生物信息学在线分析平台如NCBI、PFAM等分析SmERF108的序列特征；MEGA-X软件用于构建SmERF108与不同功能转录因子的系统进化树；拟南芥原生质体转化法鉴定SmERF108蛋白的亚细胞定位；通过实时荧光定量PCR（Real-time qPCR）对SmERF108基因在丹参不同器官和组织差异表达进行检测；利用酵母体系对SmERF108的转录激活活性进行探究并用酵母单杂技术确定其靶基因。结果 SmERF108具有典型的AP2/ERF保守结构域，属于ERF-B3亚组，系统进化树和保守基序分析显示SmERF108与丹参中SmERF128、青蒿中AaERF2亲缘关系较近且保守基序分布一致；亚细胞定位显示SmERF108蛋白定位于细胞核；SmERF108基因在周皮中表达最高，且呈现周皮（R1）>韧皮部（R2）>木质部（R3）的规律；酵母自激活验证SmERF108具有转录激活活性，同时酵母单杂交确认其能与关键酶基因SmCPS1启动子结合。结论 鉴定到丹参中一个新转录因子SmERF108，生物信息学分析及差异表达分析预测与丹参酮合成相关，分子互作初步证实靶基因为SmCPS1二萜环化酶。     

Analysis on internal mechanism of zedoary turmeric in treatment of liver cancer based on pharmacodynamic substances and pharmacodynamic groups

Zedoary tumeric (Curcumae Rhizoma, Ezhu in Chinese) has a long history of application and has great potential in the treatment of liver cancer. The anti liver cancer effect of zedoary tumeric depends on the combined action of multiple pharmacodynamic substances. In order to clarify the specific mechanism of zedoary tumeric against liver cancer, this paper first analyzes the mechanism of its single pharmacodynamic substance against liver cancer, and then verifies the joint anti liver cancer mechanism of its "pharmacodynamic group". By searching the research on the anti hepatoma effect of active components of zedoary tumeric in recent years, we found that pharmacodynamic substances, including curcumol, zedoarondiol, curcumenol, curzerenone, curdione, curcumin, germacrone, β-elemene, can act on multi-target and multi-channel to play an anti hepatoma role. For example, curcumin can regulate miR, GLO1, CD133, VEGF, YAP, LIN28B, GPR81, HCAR-1, P53 and PI3K/Akt/mTOR, HSP70/TLR4 and NF-κB. Wnt/TGF/EMT, Nrf2/Keap1, JAK/STAT and other pathways play an anti hepatoma role. Network pharmacological analysis showed that the core targets of the "pharmacodynamic group" for anti-life cancer are AKT1, EGFR, MAPK8, etc, and the core pathways are neuroactive live receiver interaction, nitrogen metabolism, HIF-1 signaling pathway, etc. At the same time, by comparing and analyzing the relationship between the specific mechanisms of pharmacodynamic substance and "pharmacodynamic group", it is found that they have great reference significance in target, pathway, biological function, determination of core pharmacodynamic components, formation of core target protein interaction, in-depth research of single pharmacodynamic substance, increasing curative effect and so on. By analyzing the internal mechanism of zedoary tumeric pharmacodynamic substance and "pharmacodynamic group" in the treatment of liver cancer, this paper intends to provide some ideas and references for the deeper pharmacological research of zedoary tumeric and the relationship between pharmacodynamic substance and "pharmacodynamic group".     

肌肉持续牵伸联合理筋手法对中风后踝关节功能障碍患者运动功能、生存质量的影响

探究肌肉持续牵伸联合理筋手法对中风后踝关节功能障碍患者运动功能、生存质量的影响。方法：前瞻性选取2019年3月-2021年3月在我院收治的中风后踝关节功能障碍患者102例，随机表法分为理筋手法治疗的A组（34例）、肌肉持续牵伸治疗的B组（34例）及肌肉持续牵伸联合理筋手法的C组（34例）。治疗4周后统计对比患者胫前肌肌力、小腿三头肌肌张力、踝关节功能改善情况；对患者运动能力、平衡能力、生存质量及疼痛情况进行评估，分析临床疗效。结果： 治疗后，患者KendaII 百分比、踝关节活动度、Berg评分、FMA评分及ADL评分有所升高，MAS积分、VAS评分有所降低（P＜0.05），与A组相比，B、C组患者KendaII 百分比、踝关节活动度、Berg评分、FMA评分及ADL评分较高，MAS积分、VAS评分较低（P＜0.05）；与B组相比，C组患者KendaII 百分比、踝关节活动度、Berg评分、FMA评分及ADL评分较高，MAS积分、VAS评分较低（具有统计学差异（P＜0.05）。相比A组，B组临床治疗有效率略高，但不具有统计学意义（P＞0.05）；相比A、B组，C组临床治疗有效率较高，具有统计学差异（P＜0.05）。结论：肌肉持续牵伸结合理筋手法对中风踝关节功能障碍患者进行治疗，起到活血通络、养血舒筋作用，协调肌群间肌张力平衡，改善肢体功能，提高患者运动能力及生存质量，疗效显著。     

超声对导管型乳腺癌与导管内乳头状瘤患者的诊断价值

  目的  探讨超声对导管型乳腺癌(DBC)与导管内乳头状瘤(IDP)患者的鉴别诊断。  方法  本研究为回顾性研究，以我院2017年1月~2020年12月收治的110例乳腺疾病患者作为研究对象，其中DBC患者59例，IDP患者51例，分析两组患者的常规超声、超声血流情况之间的差异，分析及Logistic回归诊断模型。  结果  IDP以及DBC患者的导管形态(χ2=25.692，P < 0.001)、导管走行(χ2=20.321，P < 0.001)、导管壁回声(χ2=6.052，P=0.014)及钙化灶情况(χ2=34.552，P < 0.001)的差异有统计学意义，两组患者的血流分布之间的差异有统计学意义(χ2=22.441，P < 0.001)，但两组血流分级之间的差异无统计学意义(P>0.05)；通过多因素分析，患者的导管、导管走行、导管壁回声、钙化、血流分布均是DBC诊断的重要因素。  结论  超声对DBC与IDP患者具有较强的鉴别诊断意义，导管增粗、导管走行不规则、导管壁回声不清晰、钙化不明显、血流分布均是DBC诊断的重要依据。      

紧密型医联体模式下全科医学科建设探索

目的 探讨紧密型医连体模式下全科医学科的定位。 方法 通过对比分析国内全科医学科的发展和深圳市5家区属医院全科医学科的实际运行情况，探索紧密型医联体模式下全科医学科在组织架构、功能定位和学科发展方面的建设。 结果 我国全科医学科的发展主要依赖学科联盟，通过教学师资输出与师资培养在临床基地和实践基地间建立联系。紧密医联体模式下全科医学科发展可借用行政手段强力推进，有利于分级诊疗。2016年深圳市社康机构基本医疗服务人次占全市公立医疗机构门急诊总诊疗量的42.66%。选择在社区首诊的医保参保人数量863万，占全市参保人总数的70%。深圳市区属医院全科医学科在组织架构上多采用双重管理模式，即在业务上归属医务科等职能部门管理，行政上归属社区健康管理中心管理。全科医学科在功能定位上侧重于全科教学，着重于全科医学人才培养，为基层输送合格的全科医生。全科门诊是全科医生的主要带教场所，全科住院部适合收治多病共存、未分化疾病和教学患者，有利于全科医生对典型患者的系统学习。 结论 紧密型医联体模式有利于分级诊疗推进，该模式下全科医学科组织架构可采用双重管理，其功能定位为全科教学，其学科发展方向为多病共存患者照顾。