Targeted peptide-modified oxidized mesoporous carbon nanospheres for chemo-thermo combined therapy of ovarian cancer in vitro

Ovarian cancer remains one of serious hazards to human health due to many drawbacks of existing available treatment options. In this study, a multifunctional chemo-thermo combined therapy nanoplatform (OMCNPID) was successfully prepared, which is composed of I₆P₈ peptide as a targeting moiety to interleukin-6 receptors (IL-6Rs), oxidized mesoporous carbon nanospheres (OMCN) as a near infrared (NIR)-triggered drug carrier and doxorubicin (DOX) as a chemotherapeutic drug and fluorescent agent. The synthesized multifunctional nanoplatform displayed high storage capacity for drugs and excellent photothermal properties. Besides, DOX was rapidly released from OMCNPID at the condition of low pH and NIR laser irradiation due to the dissociation of DOX from graphitic cores of OMCN. In vitro experimental results verified that OMCNPID could be markedly taken up by SKOV-3 monolayer cells and tumor spheroids, and revealed a remarkable synergistic chemo-photothermal effect against ovarian cancer. All the results demonstrated that OMCNPID is a pH/NIR dual-stimulus responsive nanoplatform and can achieve efficient chemo-thermo combined therapy.     

基于项目反应理论的中国职业人群职业紧张测量核心量表条目分析

目的 利用项目反应理论（item response theory,IRT）对《中国版职业紧张核心量表》质量进行分析与评价,为后期量表使用和修订提供参考依据。方法 采用方便抽样方法,抽取湖北省两家三甲医院和多家一、二级医院共1261名医务人员作为研究对象,应用《中国版职业紧张核心量表》调查其职业紧张情况。采用主成分分析验证量表4个维度的单维性。采用IRT中的Same Jima等级反应模型计算每个条目的区分度、难度系数和信息量,从微观角度评价量表的测量特性。结果 量表4个维度均满足单维性假设。IRT结果显示所有条目的区分度较好,取值范围在0.67~3.10;17个条目中有13个条目的难度系数在-2.78~2.30之间,且不存在难度逆反现象,条目9和11难度过高且难度逆反,条目15和16难度过低过高并存且有难度逆反现象,提示待改进;除了条目9、11和15提供的信息量中等,条目16和17提供的信息量较差以外,其余条目的信息量均较好。结论 《中国版职业紧张核心量表》所有条目的区分度较好。从难度系数和信息量两个角度,条目9、11、15、16、17的测验质量均是有待改进的,其余条目性能良好,建议针对上述分析结果结合专家意见对问题条目进行修订。     

参蛤河车胶囊治疗慢性阻塞性肺疾病160例

目的:观察补气健脾、益肾活血类中药配伍治疗高寒地区慢性阻塞性肺疾病的疗效。方法:采用参蛤河车胶囊(西洋参、蛤蚧、紫河车、桑白皮、杏仁、川贝母、茯苓、桃仁等)治疗本病160例。结果:总有效率达76.8%。提示:本方具有补肺健脾,益肾活血的功效。     

LOX与VEGF蛋白在人喉鳞癌中的表达及其相关性研究

目的检测赖氨酰氧化酶（LOX）、血管内皮生长因子（VEGF）蛋白在人喉鳞癌中的表达,探讨其对喉鳞癌转移及预后的影响及意义。方法采用免疫组织化学方法检测14例有淋巴结转移的喉鳞癌及24例未见淋巴结转移的原位癌组织中LOX及VEGF的表达情况,并分析其表达的相关性。结果①LOX、VEGF在喉鳞癌组织中表达显著高于癌旁正常组织（P均〈0．05）。②VEGF在淋巴结转移组与无转移组表达阳性率分别为100％和71％,具有显著性差异（P〈0．05）;LOX在淋巴结转移组与无转移组表达无显著性差异（P〉0．05）。③LOX、VEGF的表达与患者的年龄、性别、临床分型及临床分期等临床病理因素无关。④LOX与VEGF在人喉鳞癌组织中表达呈正相关。结论LOX与VEGF存在正相关性,可作为喉癌治疗的一个新靶点。VEGF的高表达可能是造成LOX表达变化的重要影响因素之一。     

胆石清片联合熊去氧胆酸片预防肝内胆管结石术后复发25例

目的观察胆石清片联合熊去氧胆酸片预防肝内胆管结石术后复发的效果。方法回顾分析2010年3月至2012年10月行肝内胆管结石手术患者45例的临床资料,术后对照组未口服药物,治疗组口服胆石清片联合熊去氧胆酸片,观察两组患者肝功能变化和结石复发情况。结果术后肝功能均正常,患者随访时间6月-2年,治疗组结石复发率为16．00％,对照组结石复发率为25．00％,治疗组显著优于对照组（P〈0．01）。结论肝内胆管结石术后服用胆石清片和熊去氧胆酸片预防术后结石复发安全、有效,但长期疗效尚需深入研究。     

The cell cycle inhibitor P21 promotes the development of pulmonary fibrosis by suppressing lung alveolar regeneration

The cell cycle inhibitor P21 has been implicated in cell senescence and plays an important role in the injury–repair process following lung injury. Pulmonary fibrosis (PF) is a fibrotic lung disorder characterized by cell senescence in lung alveolar epithelial cells. In this study, we report that P21 expression was increased in alveolar epithelial type 2 cells (AEC2s) in a time-dependent manner following multiple bleomycin-induced PF. Repeated injury of AEC2s resulted in telomere shortening and triggered P21-dependent cell senescence. AEC2s with elevated expression of P21 lost their self-renewal and differentiation abilities. In particular, elevated P21 not only induced cell cycle arrest in AEC2s but also bound to P300 and β-catenin and inhibited AEC2 differentiation by disturbing the P300–β-catenin interaction. Meanwhile, senescent AEC2s triggered myofibroblast activation by releasing profibrotic cytokines. Knockdown of P21 restored AEC2-mediated lung alveolar regeneration in mice with chronic PF. The results of our study reveal a mechanism of P21-mediated lung regeneration failure during PF development, which suggests a potential strategy for the treatment of fibrotic lung diseases.     

仙灵骨葆联合钙剂治疗高龄患者老年性骨质疏松症的临床研究

目的：观察仙灵骨葆胶囊联合钙尔奇D和骨化三醇对高龄患者老年性骨质疏松症的治疗效果.方法：选择60例高龄老年性骨质疏松症患者随机分为两组,治疗组（仙灵骨葆＋钙尔奇D＋骨化三醇）30例,对照组（钙尔奇D＋骨化三醇）30例.观察两组患者治疗前后和两组间的VAS评分、SF-36评分、BMD、血Ca、血P、ALP、TRACP的差异.结果：两组治疗后VAS评分较治疗前均明显降低（P＜0.01）,治疗组降低较对照组更明显（P＜0.01）.两组治疗后SF-36评分较治疗前均明显提高（P＜0.01）,治疗组升高较对照组更明显（P＜0.01）.治疗组治疗后BMD明显升高,对照组BMD变化不大,两组比较有显著差异（P＜0.05）.治疗前后两组血Ca和血P均变化不大,组间比较无差异（P＞0.05）.治疗组治疗后ALP明显升高,对照组ALP变化不大,两组比较有显著差异（P＜0.05）.两组治疗后TRACP较治疗前均有所降低,治疗组降低明显,组间比较有显著差异（P＜0.01）,两组所有患者无严重不良反应发生.结论：仙灵骨葆胶囊联合钙尔奇D和骨化三醇治疗高龄患者老年性骨质疏松症效果确切,且安全性良好.     

脊髓小脑性共济失调3型一家系报道

目的 探讨脊髓小脑性共济失调(spinocerebellar ataxia, SCA)3型(SCA3)的临床特点。方法 收集1例2016年6月在济宁医学院附属医院神经内科住院的SCA3患者及其家系的临床资料,基因检测明确家系分型,结合文献分析家系中的临床差异。结果 患者23岁发病,临床表现为行走不稳伴进行性下肢无力,肌张力正常,水平性诱发眼震,无跌倒及吟诗性语言,闭目难立征阳性,呈宽基底步态,双侧巴氏征未引出,腹壁反射减低,膝反射及跟腱反射活跃,深浅感觉未见异常。基因检测提示患者ATXN3基因CAG重复次数79次(正常人范围在12～44次),超过正常范围,患者其它(ATXN1、ATXN2、CACNA1A、ATXN7、ATXN8、PPP2R2B、TBP)基因的CAG重复次数均在正常范围内。患者的55岁父亲、6岁女儿及4岁儿子的ATXN3基因的CAG重复数分别为65、73、71次,超过正常范围,但均未发病。患者母亲ATXN3基因的CAG重复数29次,属正常范围,未见临床症状。结论 本例家系是SCA3型,具有临床异质性,基因检测有助于诊断。     

Rapid detection of hysteromyoma and cervical cancer based on serum surface-enhanced Raman spectroscopy and a support vector machine

In this study, we investigated the feasibility of using surface-enhanced Raman spectroscopy (SERS) combined with a support vector machine (SVM) algorithm to discriminate hysteromyoma and cervical cancer from healthy volunteers rapidly. SERS spectra of serum samples were recorded from 30 hysteromyoma patients, 36 cervical cancer patients as well as 30 healthy subjects. SVM was used to establish the classification models, and three types of kernel functions, namely linear, polynomial, and Gaussian radial basis function (RBF), were utilized for comparison. When the polynomial kernel function was employed, the overall diagnostic accuracy for classifying the three groups could achieve 86.5%. In addition, when the optimal kernel function was selected, the diagnostic accuracy for identifying healthy versus hysteromyoma, healthy versus cervical cancer, and hysteromyoma versus cervical cancer reached 98.3%, 93.9%, and 90.9%, respectively. The current results indicate that serum SERS technology, together with the SVM algorithm, is expected to become a clinical tool for rapid screening of hysteromyoma and cervical cancer.