持续牵引下电针治疗腰椎间盘突出症疗效观察

目的:观察持续俯卧位牵引下电针治疗腰椎间盘突出症的临床疗效,为临床治疗该症寻求一种更好的方法.方法:将患者随机分为A组(42例)、B组(39例)和C组(38例).三组针刺方法相同,均取夹脊穴配委中、承山等穴,针刺后加电针,在此基础上,A组采用俯卧位持续牵引同时配合电针方法治疗,B组则先仰卧牵引再行电针治疗,C组单纯进行电针治疗,观察并比较临床疗效.结果:A组有效率为95.2%,优于B组的79.5%与C组的65.8%(P＜0.05,P＜0.01).结论:持续俯卧位牵引下电针为治疗腰椎间盘突出症的较佳方法.     

中国汉族人群17个心血管疾病易感基因位点基因型和基因频率分析

目的:调查中国汉族人群中17个心血管疾病易感基因位点的基因型和基因频率.方法: 运用基因芯片技术同时检测138例来自中国大部分省市的汉族人的13个心血管易感基因的17个SNPs.结果: 国内未曾见报道的4个基因位点基因型频率分别为: ET-2985 AA∶AG∶GG为2.2% (3)∶22.2% (30)∶75.6% (102);NPRC(-55) AA∶AC∶CC为8.1% (11)∶23.0% (31)∶68.9% (93);KCNQ1140则只发现了SS基因型;CYP46rs754203 CC∶CT∶TT为55.0%(66)∶20.0%(24)∶25.0%(30).ApoBMsp1 ∶-为92%(232)∶8%(20),而Hapmap公布的则为100%(90)∶0%(0),两者比较,差异有统计学意义(χ2=7.587,P=0.000).MTHFR677 C∶T为70%(168)∶30%(72),与Hapmap中中国北京汉族人(CHB)公布的结果48.9%(44)∶51.1%(46),以及ALFRED中公布的中国香港汉族(SA0008510)77.8%(322)∶22.2%(92)比较,差异具有统计学意义(χ2和P分别为12.70,0.000;4.89, 0.027).其他位点的调查结果与Hapmap计划中CHB(ANP2238, ApoBXbaⅠ, NOS3298, ApoBEcorⅠ和ApoE112)和ALFRED网站的SA0008510的基因频率(AGT235, ACEAlu, ApoCⅢ3175, ApoCⅢ3206, ApoE158和SerpinA3rs4934)有较好的吻合.结论:SNPs频率分布具有种族和地区差异,中国汉族人群中ANP2238 C, ApoBEcorⅠ(-)和KCNQ1140 G, 是少见的等位基因(《5%),可能不是心血管疾病的主要原因.用基因芯片检测多个心血管疾病易感基因SNPs结果可靠.     

SIRPγ-expressing cancer stem-like cells promote immune escape of lung cancer via Hippo signaling

Cancer stem-like cells (CSLCs) acquire enhanced immune checkpoint responses to evade immune cell killing and promote tumor progression. Here we showed that signal regulatory protein γ (SIRPγ) determined CSLC properties and immune evasiveness in a small population of lung adenocarcinoma (LUAD) cancer cells. A SIRPγ^hi population displayed CSLC properties and transmitted the immune escape signal through sustaining CD47 expression in both SIRPγ^hi and SIRPγ^lo/– tumor cells. SIRPγ bridged MST1 and PP2A to facilitate MST1 dephosphorylation, resulting in Hippo/YAP activation and leading to cytokine release by CSLCs, which stimulated CD47 expression in LUAD cells and consequently inhibited tumor cell phagocytosis. SIRPγ promoted tumor growth and metastasis in vivo through YAP signaling. Notably, SIRPγ targeting with genetic SIRPγ knockdown or a SIRPγ-neutralizing antibody inhibited CSLC phenotypes and elicited phagocytosis that suppressed tumor growth in vivo. SIRPG was upregulated in human LUAD and its overexpression predicted poor survival outcome. Thus, SIRPγ^hi cells serve as CSLCs and tumor immune checkpoint–initiating cells, propagating the immune escape signal to the entire cancer cell population. Our study identifies Hippo/YAP signaling as the first mechanism by which SIRPγ is engaged and reveals that targeting SIRPγ represents an immune- and CSLC-targeting strategy for lung cancer therapy.     

丁酸钠对食管癌细胞增殖的影响

目的:观察丁酸钠对食管癌EC9706细胞增殖、细胞周期及NDRG1蛋白表达的影响.方法:采用0.5 mmol/L丁酸钠作用于食管癌EC9706细胞,用MTT法检测处理不同时间时细胞增殖的变化,采用流式细胞仪检测细胞周期的变化,采用免疫组化方法检测NDRG1蛋白表达的变化.结果:①MTT实验结果显示,丁酸钠作用1～5 d时各组吸光度均低于对照组,经统计学处理差异有显著性意义(P＜0.05);丁酸钠不同作用时间的细胞增殖抑制率分别为:1 d组21.2%,3 d组23.5%,5 d组25.6%,且随作用时间延长抑制率升高.②细胞周期检测结果为(%):G1期细胞:对照组57.00±1.10,1 d组63.10±0.78,3 d组67.20±0.58,5 d组69.70±0.64;S期细胞:对照组25.30±0.27,1 d组20.20±0.66,3 d组20.40±0.82,5 d组20.90±0.50;M期细胞:对照组17.20±1.00,1 d组16.70±0.69,3 d组12.10±0.41,5 d组9.40±0.23.各组G1期结果分别与对照组结果比较,差异有显著性意义(P＜0.01).③丁酸钠可上调NDRG1蛋白表达水平,随作用时间增长蛋白表达增强.结论:丁酸钠可抑制食管癌细胞增殖,这一作用可能与NDRG1蛋白表达增加有关.     

Effects of Strength and Distribution of SiC on the Mechanical Properties of SiCp/Al Composites

In this paper, considering the strength and geometric discrete distribution characteristics of composite reinforcement, by introducing the discrete distribution function of reinforcement, the secondary development of ABAQUS is realized by using the Python language, the parametric automatic generation method of representative volume elements of particle-reinforced composites is established, and the tensile properties of silicon carbide particle-reinforced aluminum matrix composites are analyzed. The effects of particle strength, particle volume fraction, and particle random distribution on the mechanical properties of SiCp/Al composites are studied. The results show that the random distribution of particles and the change in particle strength have no obvious influence on the stress–strain relationship before the beginning of material damage, but have a great influence on the damage stage, maximum strength, and corresponding failure strain. With the increase in particle volume fraction, the damage intensity of the model increases, and the random distribution of particles has a great influence on the model with a large particle volume fraction. The results can provide a reference for the design, preparation, and characterization of particle-reinforced metal matrix composites.     

腹腔镜下女性盆腔解剖

随着对盆腔解剖结构研究的深入,尤其盆底解剖,在近二十年中有了突破性发展,我们面临着一个理念的转变。解剖学已细化分类为系统解剖学、局部解剖学、比较解剖学、临床解剖学、断层解剖学和发生解剖学。对女性盆腔解剖的掌握和新知识的更新,有利于正确诊断和处理各种疾病。1女性     

Prognostic Significance of Tumor Growth Rate (TGR) in Patients with Huge Hepatocellular Carcinoma Undergoing Transcatheter Arterial Chemoembolization

The prognostic value of the tumor growth rate (TGR) in huge hepatocellular carcinoma (HHCC) patients treated with transcatheter arterial chemoembolization (TACE) as an initial treatment remains unclear. This two-center retrospective study was conducted in 97 patients suffering from HHCC. Demographic characteristics, oncology characteristics, and some serological markers were collected for analysis. The TGR was significantly linear and associated with the risk of death when applied to restricted cubic splines. The optimal cut-off value of TGR was −8.6%/month, and patients were divided into two groups according to TGR. Kaplan–Meier analysis showed that the high-TGR group had a poorer prognosis. TGR (hazard ratio (HR), 2.06; 95% confidence interval (CI), 1.23–3.43; p = 0.006), presence of portal vein tumor thrombus (PVTT) (HR, 1.93; 95% CI, 1.13–3.27; p = 0.016), and subsequent combination therapy (HR, 0.59; 95% CI, 0.35–0.99; p = 0.047) were independent predictors of OS in the multivariate analysis. The model with TGR was superior to the model without TGR in the DCA analysis. Patients who underwent subsequent combination therapy showed a longer survival in the high-TGR group. This study demonstrated that higher TGR was associated with a worse prognosis in patients with HHCC. These findings will distinguish patients who demand more personalized combination therapy and rigorous surveillance.     

两种不同子宫全切方式对患者妇科内分泌以及性生活质量的影响研究

目的:分析两种不同子宫全切方式对患者妇科内分泌以及性生活质量的影响。方法:随机选择我院2014年1月至2015年1月收治的行子宫全切术的患者90例为研究对象,随机平均分成观察组和对照组,对照组利用传统开腹方法进行子宫全切治疗,观察组利用腹腔镜进行子宫全切手术治疗,比较两组内分泌情况以及性生活质量。结果:两组内分泌情况以及性生活质量评分比较没有显著差异,但是观察组术中出血、住院时间、手术时间、肛门排气、尿管留置时间均低于对照组。结论:相较于传统开腹子宫全切治疗,腹腔镜用于子宫全切治疗中能够减少术中出血和手术时间及住院时间,值得临床推广。     

不同滴度的妊娠梅毒患者的治疗结局分析

目的:探讨不同滴度的妊娠梅毒治疗后对治疗结局的分析。方法:回顾性分析2014年1月至2016年9月于我科治疗的120名妊娠梅毒患者作为本次试验的研究对象。将选取的120名妊娠梅毒患者根据妊娠梅毒确诊时的甲苯胺红不加热血清试验(TRUST滴度)的不同分为三组:分别为妊娠梅毒确诊时TRUST滴度小于1∶4、妊娠梅毒确诊时TRUST滴度1∶4~1∶8、妊娠梅毒确诊时TRUST滴度1∶8以上。TRUST滴度小于1∶4组患者30例,TRUST滴度1∶4~1∶8组患者50例,TRUST滴度1∶8以上组患者40例。然后对各组患者的妊娠结局进行统计学分析。结果:TRUST滴度<1∶4组自然流产1例(3.3%)、宫内死胎1例(3.3%)、早产儿2例(6.7%)、新生儿先天性梅毒1例(3.3%),不良妊娠结局的发生率为16.7%;TRUST滴度1∶4~1∶8组自然流产5例(10%)、宫内死胎3例(6%)、早产儿5例(10%)、新生儿先天性梅毒5例(10%),不良妊娠结局的发生率为36%;TRUST滴度>1∶8组自然流产5例(12.5%)、宫内死胎4例(10%)、早产儿8例(20%)、新生儿先天性梅毒7例(17.5%),不良妊娠结局的发生率为60%。结论:妊娠梅毒不同滴度的患者治疗结局不同,妊娠梅毒滴度越高不良妊娠结局的发生率越高。