40例深部浸润型子宫内膜异位症的临床特点、MRI影像表现及治疗效果分析

[目的]探讨深部浸润型子宫内膜异位症(DIE)临床特点、MRI影像表现及治疗效果.[方法]回顾性分析2014年2月至2016年2月确诊的85例子宫内膜异位症患者临床、MRI影像学及治疗相关资料,通过与非DIE人群比较总结DIE临床特点,观察DIE患者MRI影像学表现及治疗效果.[结果]85例患者中病理证实DIE 40例,DIE组重度痛经、性交痛、附件囊肿活动度、宫骶韧带结节发生率分别为92.5%、65.0%、72.5%、67.5%显著高于非DIE组(n=45)的33.3%、11.1%、42.2%、17.8%,差异有统计学意义(P<0.05),DIE组阴道直肠隔结节5例,后穹窿蓝色结节15例,而非DIE组无.MRI显示DIE患者累及子宫宫骶韧带27例(子宫骶骨韧带增厚、两侧不对称或韧带内结节);T1WI、T2WI序列多以高信号为主.治疗总有效率90.6%;术后6个月患者临床症状评分、CA125水平较术前均明显下降(P<0.05).[结论]DIE患者以重度痛经、性交痛为其典型临床症状,阴道直肠隔结节、后穹窿蓝色结节为DIE判断敏感表现;MRI对DIE病变范围准确显示,在DIE术前诊断中有重要作用;根据临床症状及MRI检查结果采取相应的治疗方法效果良好.     

维拉帕米和Na+/H+通道阻滞剂对大鼠肝脏热缺血再灌注损伤的影响及其机制

[目的]研究维拉帕米(VP)和5-N-乙基-异丙基阿米洛利(EIPA)单独及联合作用对大鼠肝脏热缺血再灌注损伤保护作用及其机制.[方法]50只SD大鼠随机分成空白组(A组),缺血再灌注组(B组),EIPA 缺血再灌注组(C组),维拉帕米 缺血再灌注组(D组),EIPA VP 缺血再灌注组(E组),每组10只.缺血前10 min自尾静脉注入药物.制备95%肝脏缺血模型,缺血30 min,再灌注2 h后取静脉血、肝脏标本,比较各组之间的肝功能(ALT, AST),肝组织匀浆XOD活性,肝组织Ca2 浓度以及肝组织形态学变化.[结果]VP和EIPA组各项检测指标与缺血再灌注组比有显著性差异,联合用药组与单独用药组比较有显著性差异(P＜0.05).[结论]维拉帕米和EIPA预处理能减轻肝脏缺血再灌注损伤,联合用药有协同保护作用,效果更明显.     

MMP-9、PCNA在骨肉瘤中的表达及其临床意义

【目的】研究骨肉瘤组织中基质金属蛋白酶-9（MMP-9）和增殖细胞核抗原（PCNA）的表达及两者的相关性及临床意义。【方法】对54例骨肉瘤组织和20例正常骨组织进行MMP-9和PCNA免疫组化染色。【结果】两者在骨肉瘤组织中的阳性表达明显高于正常组骨组织,且呈正相关（P〈0．05）;MMP-9在骨肉瘤组织中的表达与其临床分期无明显相关性;而与骨肉瘤侵袭软组织及预后有显著相关性。PCNA在骨肉瘤组织中的表达与其临床分期和预后有相关性。【结论】MMP-9和PCNA在骨肉瘤组织的表达明显上调;MMP-9与骨肉瘤的侵袭、转移有关,可作为预测转移潜能的指标。PCNA可作为骨肉瘤增殖的一个指标。     

低氧对人单核细胞白血病细胞株U937细胞增殖的影响及其作用机制的初步研究

【目的】初步探讨低氧对人单核细胞白血病细胞株U937细胞增殖的影响和作用机制。【方法】将培养的细胞分为常氧对照组、低氧8h组、低氧12h组、低氧24h组。MTT比色法检测细胞增殖率、RT-PCR和Western-blot方法分别检测低氧诱导因子1α(HIF-1α)在mRNA和蛋白水平的表达、激光共聚焦显微镜观察HIF-1α核转位现象。【结果】①相对于对照组,低氧8h组、低氧12h组和低氧24h组细胞存活率明显下降(P<0.01),并且随着低氧时间的延长存活率逐渐下降,各组之间的差异有显著性(P<0.01);②HIF-1α mRNA和蛋白在对照组有少量的表达,随着低氧时间的延长,其表达增加(P<0.05);③相对于对照组,低氧组细胞内HIF-1α的表达增加,并且向核内转移,随着低氧时间的延长核内HIF-1α逐渐增多。【结论】低氧可通过影响HIF-1α的表达和调节其活性而达到抑制U937细胞株增殖的作用。HIF-1α介导的信号传导通路在白血病细胞的发生和增殖过程中可能起到关键的调控作用。     

PARP-1与HMGA2在乳腺癌分子分型中的表达及临床意义

【目的】通过免疫组化法实验观察PARP‐1和 HMGA2在乳腺癌不同分子分型中的表达,探讨其在乳腺癌中表达的意义及其与临床特点的相关性。【方法】采用免疫组化法检测240例乳腺癌术后肿瘤标本和60例乳腺良性肿瘤组织中PARP‐1与 HMGA2蛋白的表达情况。分析 PARP‐1和 HMGA2在不同分子类型乳腺癌组织中的表达差异;分析两者在不同分子类型表达的相关性及其与原发肿瘤直径、腋窝淋巴结转移等病理特征相关性。【结果】在乳腺癌中 PARP‐1阳性表达率为65．4％显著高于癌旁组织中的22．4％;HMGA2阳性表达率为58．8％高于癌旁组织中的36．4％,PARP‐1及 HMGA2在乳腺癌各分子分型中的阳性表达与腋窝淋巴结转移情况具有相关性（ P ＜0．05）,HMGA2的阳性表达在luminal A型及luminal B型中与原发肿瘤大小存在相关性（ P ＜0．05）,而在 H ER‐2过表达型及三阴性乳腺癌中不存在相关性（ P ＞0．05）。【结论】PARP‐1与HMGA2在乳腺癌的浸润、转移过程中相互作用,是反映乳腺癌进展的生物学指标。PARP‐1与HMGA2高表达的患者易发生淋巴结转移,预后不良。     

大肠癌患者血清CEA与癌组织CEA mRNA检测的比较分析

目的探讨血清CEA与大肠癌组织CEAmRNA表达的关系及大肠癌组织CEAmRNA的表达率。方法RIA(放射免疫法 )测定 4 0例大肠癌患者血清CEA ;RT PCR(逆转录聚合酶链式反应 )检测 4 0例大肠癌组织CEAmRNA及 4 0例正常大肠黏膜CEAmRNA表达。结果血清CEA升高 (>5ng/ml) 18例(4 5 % ) ,大肠癌组织CEAmRNA阳性 38例 (95 % ) ,正常大肠黏膜CEAmRNA阳性 2例 (12 .5 % )。结论大肠癌患者血清CEA升高与大肠癌组织CEAmRNA阳性没有相关性 ,大肠癌组织CEAmRNA表达的阳性率与正常大肠黏膜CEAmRNA表达的阳性率有显著差异。     

HIF-1α mRNA在寻常型银屑病及脂溢角化病皮损表皮中的表达及意义

[目的]研究低氧诱导因子-1α（HIF-1α） mRNA在寻常型银屑病及脂溢性角化病皮损表皮中的表达,探讨其在银屑病及脂溢性角化病中的作用机制.[方法]应用原位杂交法检测HIF-1α mRNA在寻常型银屑病、脂溢性角化病及正常皮肤组织各25例皮损表皮中的表达和分布.[结果]在25例寻常型银屑病皮损表皮的中下层可见HIF-1α mRNA阳性表达,在25例脂溢性角化病皮损表皮的全层可见HIF-1α mRNA阳性表达,在正常皮肤的表皮未见HIF-1α mRNA的表达;银屑病、脂溢性角化病皮损表皮中HIF-1α mRNA的表达阳性率均为100%（25/25）,均显著高于正常对照组,其差异有统计学意义（P〈0.01）.[结论]HIF-1α mRNA在寻常型银屑病及脂溢性角化病皮损的表皮中表达均增高.     

肺鳞癌患者血清miRNA-181a的表达及其对肺癌细胞功能的影响

【目的】探讨肺鳞癌患者血清中microRNA-181a（miR-181a）水平的变化及其对人肺鳞癌细胞生物学功能的影响。【方法】选择56例肺鳞癌患者和50名健康成人,采用stem-[oop定量PCR的方法检测其血清中miR-181a的表达变化;体外实验采用CCK8和Transwell小室实验检测miR-181a对人肺鳞癌细胞株NCI-H226增殖、侵袭和迁移能力的影响。【结果】miR-181a在肺鳞癌患者血清中表达较健康成人显著降低（P〈0．05）;miR181a可明显抑制肺鳞癌细胞NCI—H226的增殖、侵袭和迁移。【结论】在肺鳞癌患者miR-181a是一种保护性的微小RNA,具有较好的诊断和治疗前景。     

The effect of 12-month participation in osteogenic and non-osteogenic sports on bone development in adolescent male athletes. The PRO-BONE study

Objectives

Research investigating the longitudinal effects of the most popular sports on bone development in adolescent males is scarce. The aim is to investigate the effect of 12-month participation in osteogenic and non-osteogenic sports on bone development.

Guidelines for hospital privileges in vascular surgery and endovascular interventions: Recommendations of the Society for Vascular Surgery

The Hospital Privileges Practice Guideline Writing Group of the Society for Vascular Surgery is making the following five recommendations concerning guidelines for hospital privileges for vascular surgery and endovascular therapy. Advanced endovascular procedures are currently entrenched in the everyday practice of specialized vascular interventionalists, including vascular surgeons, but open vascular surgery remains uniquely essential to the specialty. First, we endorse the Residency Review Committee for Surgery recommendations regarding open and endovascular cases during vascular residency and fellowship training. Second, applicants for new hospital privileges wishing to perform vascular surgery should have completed an Accreditation Council for Graduate Medical Education-accredited vascular surgery residency or fellowship or American Osteopathic Association-accredited training program before 2020 and should obtain American Board of Surgery certification in vascular surgery or American Osteopathic Association certification within 7 years of completion of their training. Third, we recommend that applicants for renewal of hospital privileges in vascular surgery include physicians who are board certified in vascular surgery, general surgery, or cardiothoracic surgery. These physicians with an established practice in vascular surgery should participate in Maintenance of Certification programs as established by the American Board of Surgery and maintain their respective board certification. Fourth, we provide recommendations concerning guidelines for endovascular procedures for vascular surgeons and other vascular interventionalists who are applying for new or renewed hospital privileges. All physicians performing open or endovascular procedures should track outcomes using nationally validated registries, ideally by the Vascular Quality Initiative. Fifth, we endorse the Intersocietal Accreditation Commission recommendations for noninvasive vascular laboratory interpretations and examinations to become a Registered Physician in Vascular Interpretation, which is included in the requirements for board eligibility in vascular surgery, but recommend that only physicians with demonstrated clinical experience in the diagnosis and management of vascular disease be allowed to interpret these studies.