Prospective study of serum retinol, β-carotene, β-cryptoxanthin, and lutein/zeaxanthin and esophageal and gastric cancers in China

Objective: This study examined the relationship between pretrial serum concentrations of retinol, -carotene, -cryptoxanthin, and lutein/zeaxanthin and the subsequent risk of developing esophageal squamous cell carcinoma and gastric cardia or non-cardia adenocarcinoma in subjects selected from a randomized nutritional intervention trial in Linxian, China, a region with epidemic rates of esophageal and gastric cardia cancer. Methods: We used a stratified case–cohort design to select cohort members for inclusion in this study. In all we measured serum concentrations of the above vitamins in 590 esophageal, 395 gastric cardia, and 87 gastric non-cardia case subjects as well as in 1053 control subjects. Relative risks (RRs) were estimated using Cox proportional hazards models. Results: Median values in our cohort were low for serum retinol (33.6 g/dl), -carotene (4.3 g/dl), and -cryptoxanthin (3.5 g/dl) , but were high for lutein/zeaxanthin (40.0 g/dl). Gastric cardia cancer incidence fell 10% for each quartile increase in serum retinol (RR = 0.90, 95% CI = 0.83–0.99). For esophageal cancer, an inverse association with retinol levels was found only in male non-smokers (RR = 0.79 per quartile increase, 95% CI = 0.63–0.99). For gastric non-cardia cancer, an inverse association was limited to subjects 50 years old or younger (RR = 0.58 per quartile, 95% CI = 0.31–0.96). For -cryptoxanthin there was a borderline significant protective association for gastric non-cardia cancer (RR = 0.88 per quartile, 95% CI = 0.76–1.0). In contrast, we found the incidence of gastric non-cardia cancer increased (RR = 1.2 per quartile, 95% CI = 1.0–1.3) with increasing concentration of serum lutein/zeaxanthin. Conclusions: In this population, we found that low retinol and high lutein/zeaxanthin concentrations increased the risks of gastric cardia and gastric non-cardia cancer respectively. We found that there were no strong associations between any of the other analytes and any of the cancer sites.     

RPL6/Taxreb107在胃癌耐药细胞系SGC7901/ADR中的差异表达及其与MDR相关性的初步研究

目的 探讨BPL6／Taxreb107在胃癌耐药细胞系SGC7901／ADR与胃癌细胞系SGC7901的差异表达,以及与胃癌多药耐药(MDR)的相关性。方法 提取SGC7901和SGC7901/ADR细胞系总RNA;采用内对照RT-PCR检测RPL6基因和Northem杂交、基因克隆与表达、真核表达载体的构建;以电穿孔法基因转染;以流式细胞仪检测瞬时转染细胞的阿霉素蓄积和潴留。结果 内对照RT-PCR和Northern杂交证实RPL6/Taxreb 107在SGC7901/ADR中高表达。将PCR产物克隆人pUCm-T载体并经测序证实。构建正义和反义真核表达载体(pcDNA3．1)并经酶切鉴定证实后,以电穿孔法将正义真核表达载体转入SGC7901,反义真核表达载体转入SGC7901／ADR。转染48h后检测转染细胞的阿霉素蓄积和潴留,结果提示RPI6／Taxreb107转入细胞后对细胞的耐药性有影响。结论 BPI6／Taxreb107在耐药胃癌细胞中高表达,对胃癌的MDR有影响。     

高效液相色谱法测定美洛昔康胶囊的含量

目的 :建立反相高效液相色谱法测定美洛昔康胶囊中美洛昔康的含量。方法 :采用LichrosorbC18色谱柱 (5 μm,4 .6mm× 2 0 0mm) ,以吡罗昔康为内标 ,甲醇 乙腈 0 .0 9mol·L-1庚烷磺酸钠溶液 冰醋酸 (5 4∶8∶37∶1)为流动相 ,流速为0 .9mL·min-1,检测波长为 35 2nm ,柱温为室温。结果 :美洛昔康在 8～ 4 8mg·L-1范围内呈良好的线性关系 ,r =0 .9999,平均回收率为 99.78% ,RSD为 0 .96 %。结论 :该法简便 ,快速 ,专属性好 ,结果准确 ,可靠。     

hnRNPF在胰腺癌中的表达及临床意义

目的:研究核内不均一性核糖核蛋白F(heterogeneous nuclear ribonucleoprotein F,hnRNPF)mRNA水平在胰腺癌中的表达及临床意义。方法:采用TCGA全基因组mRNA测序资料研究hnRNPF在消化系统肿瘤与正常组织间的差异,分析其表达水平与临床病理资料的相关性,并进行生存分析判断其预后价值。结果:hnRNPF在不同消化系统肿瘤中的表达较正常组织明显增高,差异具有统计学意义（P<0.001）,其中胰腺癌中差异倍数最大。hnRNPF在胰腺癌组织中的表达与肿瘤TNM分期(P=4.95E-03)、浸润深度(P=5.22E-03)相关,与年龄、性别、淋巴结浸润、慢性胰腺炎病史无统计学差异。hnRNPF在胰腺癌组织中的表达高低与总生存期有统计学意义（P=0.034 31）。结论:hnRNPF mRNA在不同的消化系统肿瘤中表达都增高,在胰腺癌中,hnRNPF高表达是预后不良的因素,可以作为判断预后的有效生物标志物。     

系统性炎症反应对二线分子靶向治疗转移性肾癌患者生存率的影响

目的:探讨系统性炎症反应对二线分子靶向治疗转移性肾癌患者生存率的影响。方法:本次研究共纳入2007年1月至2016年8月我院收治的63例使用一线TKI治疗失败后接受二线mTT的mRCC患者作为研究对象。根据炎症标志物水平对使用二线mTT治疗患者的PFS和OS进行评估。此外,我们对生存的预后因素进行了分析。结果:CRP、NLR和PLR的受试者工作特征曲线（ROC）的曲线下面积（AUC）分别为0.779、0.619和0.655,无显著差异。相应的截止值分别为0.48、2.53和183。CRP（n=40）、NLR（n=31）与PLR（n=22）水平较高患者的PFS和OS均显著低于较低CRP、NLR和PLR水平的患者。多因素分析显示,CRP是PFS和OS唯一的独立预测因子。结论:系统性炎症反应与使用二线mTT的mRCC患者的生存率密切相关,CRP可以作为此类患者预后的独立预测因子。     

食管鳞癌SIB-IMRT疗效及预后因素分析

目的 观察食管鳞癌患者同期推量调强放疗(SIB-IMRT)的疗效并对其相关预后因素进行分析。方法 2009—2015年间101例食管鳞癌患者接受SIB-IMRT,PTV处方剂量5040 cGy分28次(180 cGy/次),PGTV 6020 cGy分28次(215 cGy/次)或6160 cGy分28次(220 cGy/次),1 次/d,5 次/周,全程放疗时间为5.5周。观察其不良反应、治疗失败方式及LC和OS率。结果 1、3、5年样本数分别为101、84、45例。1、3、5年LC率分别为81.6%、70.4%、68.4%,OS率分别为72.3%、49.4%、45.2%,中位生存期36个月。单因素和多因素分析均显示临床分期(Ⅰ/Ⅱ/Ⅲ期)、近期疗效(完全缓解/部分缓解/无缓解)为影响OS的因素(P=0.016、0.000、0.005、0.000)。单次分割215 cGy和220 cGy组LC和OS相近(P=0.283、0.951)。全组1、2、3级急性放射性肺炎发生率分别为10.9%、2.0%、2.0%,1、2、3级急性放射性食管炎发生率分别为63.4%、10.9%、4.0%,无一发生急性食管穿孔和出血。5例患者出现晚期放射性肺炎(2例死亡),1例晚期食管狭窄,2例食管穿孔并出血,2例单纯食管出血。220 cGy组急性放射性肺炎、上消化道反应发生率高于215 cGy组(P=0.062、0.024)。肿瘤局部未控和复发占总治疗失败的62.5%。结论 食管癌SIB-IMRT不良反应可耐受,长期疗效较佳,单次分割220 cGy较215 cGy的LC和OS未提高且增加了不良反应。临床分期、近期疗效为影响生存的预后因素。     

多中心食管鳞癌根治性三维放疗的预后分析——3JECROG R-01

目的 分析应用三维适形放疗(3DCRT)、调强放疗(IMRT)或以3DCRT、IMRT为基础的同步放化疗治疗食管癌根治性放疗患者的生存情况及预后影响因素。方法 回顾分析2002-2016年我国10所医疗中心符合纳入标准的2762例不宜手术或拒绝手术而接受根治性放疗的食管癌患者的病历资料。分析全部患者1、2、3、5年的总生存、无进展生存及预后影响因素。结论 中位随访时间60.8个月。全部患者1、2、3、5年总生存率分别为71.4%、48.9%、39.3%、30.9%,无进展生存率分别为59.5%、41.5%、35.2%、30.0%。中位生存期为23.0个月,中位无进展生存期为17.2个月。多因素分析结果显示年龄、原发肿瘤部位、临床分期、肿瘤体积、放疗剂量及治疗模式是影响总生存的因素(P=0.000~0.023),原发肿瘤部位、临床分期、肿瘤体积及放疗剂量是影响无进展生存的因素(P=0.000~0.002)。结论 在应用3DCRT、IMRT新技术和化疗药物治疗的食管鳞癌患者的5年总生存率显著提高,对临床治疗有一定的参考价值。     

UPLC–PDA–TOFMS based chemical profiling approach to rapidly evaluate chemical consistency between traditional and dispensing granule decoctions of traditional medicine combinatorial formulae

In the present study, an ultra performance liquid chromatography coupled with photo-diode array detector and time-of-flight mass spectrometry (UPLC–PDA–TOFMS) based chemical profiling approach to rapidly evaluate chemical consistency between traditional and dispensing granule decoctions of traditional medicine combinatorial formulae was proposed and validated using San–Huang–Xie–Xin–Tang (SHXXT) as a model combinatorial formula. Two different kinds of decoctions, namely traditional decoction: water extract of mixed three constituent herbs of SHXXT, and dispensing granules decoction: mixed water extract of each individual herbs of SHXXT, were prepared. Batches of these two kinds of decoction samples were subjected to UPLC–PDA–TOFMS analysis, the datasets of t_R–m/z pairs, ion intensities and sample codes were processed with supervised orthogonal partial least squared discriminant analysis (OPLS–DA) to holistically compare the difference between these two kinds of decoction samples. Once a clear classification trend was found in score plot, further statistics was performed to generate S-plot, in which the variables (t_R–m/z pair) contributing most to the difference were clearly depicted as points at the two ends of “S”, and the components that correlate to these ions were regarded as the most changed components during decocting of combinatorial formula. The identities of the changed components can be identified by comparing the mass/UV spectra and retention times with those of reference compounds and/or tentatively assigned by matching empirical molecular formulae with those of the known compounds published in the literatures. Using the proposed approach, global chemical difference was found between traditional and dispensing granule decoctions, and berberine, palmatine, epiberberine, baicalin, wonogoside, 2-O-golloyl-1-O-cinnamoylglucose and emodin were identified as the most changed components during decocting SHXXT. It is suggested that this newly established approach could be used practically for the evaluation of chemical consistency between traditional and dispensing granule decoctions of traditional medicine combinatorial formulae.     

用荧光原位杂交(FISH)方法研究人类卵巢癌和胃癌细胞系17号染色体拷贝数变化

目的研究载有多种癌变相关基因的１７号染色体在不同器官、不同组织类型肿瘤单个细胞内拷贝数的变化规律。方法以正常外周血淋巴细胞为对照,采用ＦＩＳＨ方法检测各细胞株１７号染色体拷贝数。结果１７号染色体在各细胞株单个细胞中拷贝数表现为：ＳＫＯＶ３以六倍体为主,占４８％,七倍体率占２３％;３ＡＯ以三倍体为主,占９３％;ＯＶ２以四倍体为主,占６７％;ＭＧＣ８０３以六倍体为主,占６４％;ＢＧＣ８２３以二倍体为主,占８３％;ＳＧＣ７９０１以三倍体为主,占８０％;ＰＡＭＣ８２以五倍体为主,占７８％。结论各细胞系均无１７号染色体缺失,反呈扩增趋势。     

Simultaneous characterization and quantitation of 11 coumarins in Radix Angelicae Dahuricae by high performance liquid chromatography with electrospray tandem mass spectrometry

A high performance liquid chromatography with electrospray tandem mass spectrometry (HPLC–ESI-MS/MS) method has been developed to characterize and quantify 11 coumarin compounds in Radix Angelicae Dahuricae simultaneously. By using this HPLC–ESI-MS/MS method, all 11 coumarins were separated and determined within 10 min. These coumarins were detected by ESI⁺ ionization method and quantified by multiple reaction monitor (MRM). The linear regressions were acquired with r² > 0.995, respectively. The precision was evaluated by intra- and inter-day tests, and relative standard deviation (R.S.D.) values were reported within the range of 1.14–4.42% and 0.37–4.00%. The recovery studies for the quantified compounds were observed over the range of 92.1–105.6% with R.S.D. values less than 4.55%. It demonstrated that the method developed was successfully applied for identification and quantification of 11 coumarins in Radix Angelicae Dahuricae. The results showed that the contents of coumarins in Radix Angelicae Dahuricae were processed differently and varied significantly.