血清HE4、FS、SMRP及CA125在卵巢癌患者中的表达及临床意义

目的:探讨血清人附睾蛋白4(HE4)、卵泡抑素(FS)、可溶性间皮素相关蛋白(SMRP)、糖类抗原125(CA125)在卵巢癌患者中的表达水平及临床意义。方法:选取2014年6月-2017年9月我院收治的卵巢癌患者60例作为卵巢癌组,另选取同期收治的卵巢良性肿瘤患者32例作为良性组,选取同期健康体检妇女40例作为对照组,检测三组受试者血清HE4、FS、SMRP、CA125水平,对比三组HE4、FS、SMRP、CA125阳性表达率,并分析血清HE4、FS、SMRP、CA125对卵巢癌的诊断价值。结果:三组受试者的HE4、FS、SMRP、CA125水平整体对比有统计学意义(P0.05),其中卵巢癌组与良性组HE4、FS、SMRP、CA125水平高于对照组,且卵巢癌组高于良性组,差异有统计学意义(P0.05)。三组受试者的HE4、FS、SMRP、CA125阳性表达率整体对比有统计学意义(P0.05),卵巢癌组与良性组HE4、FS、SMRP、CA125阳性表达率高于对照组,且卵巢癌组高于良性组,差异有统计学意义(P0.05)。联合检测的灵敏度高于FS、SMRP单项检测,差异有统计学意义(P0.05),联合检测的特异度高于HE4、FS、SMRP、CA125单项检测,但差异无统计学意义(P0.05)。结论:卵巢癌患者血清HE4、FS、SMRP、CA125水平及阳性表达率均较高,四项指标联合检测可提高诊断卵巢癌的灵敏度及特异度。     

人附睾蛋白4与血清CA125联合检测在卵巢癌诊断中的应用价值

目的：探讨人附睾蛋白4（HE4）和CA125联合检测在上皮性卵巢癌临床诊断中的应用价值。方法：用化学发光法测定51例卵巢癌患者、64例卵巢良性疾病患者和50例健康对照者血清中的HE4和CA125水平,并对结果进行比较分析。结果：卵巢癌组血清中HE4和CA125水平均显著高于卵巢良性肿瘤组和健康对照组,差异有统计学意义（P〈0．05）,卵巢良性肿瘤组与健康对照组比较无显著性差异;HE4在早期卵巢癌中的阳性率高于CA125,两者联合检测可提高卯巢癌诊断的阳性率;卵巢癌组联合检测ROC曲线下面积大于单项检测曲线下面积。结论：联合检测HE4和CA125有助于卵巢癌的早期诊断。     

联合检测HE4、CA125和CA199对绝经后卵巢可及综合征的诊断价值

目的:探讨联合检测人附睾蛋白4(HE4)、血清糖类抗原125(CA125)和199(CA199)在绝经后卵巢可及综合征(PMPOS)中的应用价值。方法:采用化学发光法(CLIA)检测125例PMPOS患者及60例健康志愿者(对照组)血清HE4、CA125和CA199的水平,其中PMPOS患者分为良性肿瘤组(良性组,n=50)和恶性肿瘤组(恶性组,n=75)。结果:PMPOS恶性组患者血清HE4、CA125和CA199水平均显著高于良性组,有统计学差异(P0.05);也显著高于对照组,有统计学差异(P0.05)。良性组的CA125水平略高于对照组,有统计学差异(P0.05);但CA199和HE4水平与对照组比较无明显差异,无统计学差异(P0.05)。三者联合检测用于诊断PMPOS恶性肿瘤的敏感度达到81.2%,而特异度也保持在90.0%。结论:联合检测HE4、CA199和CA125可有效提高对PMPOS恶性卵巢肿瘤的诊断效率,具有较大的临床意义。     

血清OPN、HE4和CA125检测对卵巢癌的临床意义

目的：探讨联合检测血清OPN、HE4和CA125对卵巢癌的临床意义。方法：选择2010年6月-2012年7月西安市中心医院妇科及陕西省肿瘤医院妇瘤科收治的35例卵巢癌患者、73例卵巢良性肿瘤患者及40例同期体检的健康妇女为研究对象,应用ELISA法检测患者手术前后血清OPN、HE4水平,电化学发光法检测患者手术前后血清CA125水平,计算3种肿瘤标志物单项以及联合检测在卵巢癌诊断中的敏感性及特异性。结果：（1）卵巢癌患者术前血清OPN、HE4和CA125水平分别为94.6±61.06ng/mL、412.3±278.62 pmol/mL和398.64±220.91 U/mL,与卵巢良性肿瘤组及正常对照组比较差异有统计学意义（P〈0.05）;（2）卵巢癌患者手术前与术后1月血清OPN、HE4和CA125水平比较,差异均有统计学意义（P〈0.05）;（3）血清OPN、HE4和CA125水平联合检测诊断卵巢癌的敏感性（94.3%）显著高于血清OPN、HE4和CA125单项指标检测（分别为37.1%、71.4%和77.1%）,联合检测与单项指标检测比较差异均有统计学意义（P〈0.05）,而血清OPN、HE4和CA125联合检测诊断卵巢癌的特异性（78.8%）稍低于血清OPN、HE4和CA125单项指标检测（分别为87.6%、100%和80.5%）,联合检测与单项指标检测的特异性比较差异无统计学意义（P〉0.05）。血清HE4单项指标检测的特异性高达100%。结论：联合检测卵巢癌患者血清OPN、HE4和CA125水平可作为诊断和评估卵巢癌预后的参考指标。     

妇科肿瘤患者血清中HE4及CA125联合检测的临床意义

选取自2013年9月至2015年10月在南京市妇幼保健院及南京市江宁医院妇科病房收治的患者血清标本。其中卵巢癌71例,宫颈癌62例,子宫内膜癌57例,同时选取53例健康女性作为对照。利用罗氏电化学发光法和ELISA法检测肿瘤患者和健康对照组妇女的血清中CA125和HE4的水平,并用灵敏度和特异度评价血清HE4和CA125联合检测的效能。71例卵巢癌患者中,有48例患者血清中的CA125和HE4水平均明显高于健康对照组(p0.05)。62例宫颈癌患者中,有47例患者血清中的CA125和HE4的水平均明显高于健康对照组(p0.05)。57例子宫内膜癌患者中,有43例患者血清中的CA125和HE4的水平均明显高于健康对照组(p0.05)。HE4和CA125联合检测的灵敏度和特异度明显高于单项检测。妇科肿瘤患者血清中HE4和CA125联合检测有更为明显的优势性,其灵敏度和特异性比单独检测更为高效,可明显提高妇科肿瘤患者的临床诊断准确性,为进一步的治疗提供了更为精准的信息。     

OPN联合CA125检测在卵巢癌早期诊断中的价值

目的:观察骨桥蛋白(OPN)和癌抗原125 (CA125)联合检测在卵巢癌早期诊断中的价值.方法:采用酶联免疫吸附法(ELISA)测定32例卵巢癌患者(A组)及40例卵巢良性病变(B组)血清中ONP、CA125水平.结果:卵巢癌患者血清中OPN及CA125水平明显高于良性对照组(P＜0.05);OPN、CA125检测的敏感性分别为81.3％和71.9％,OPN+CA125联合检测的敏感性为93.8％,均高于二者的单独检测;OPN、CA125检测的特异性分别为92.5％和87.5％,OPN+CA125联合检测的敏感性为95.0％,均高于二者的单项检测;OPN+CA125联合检测的阳性预测值和阴性预测值均高于二者的单项检测.结论:OPN联合CA125联合检测可提高卵巢癌的早期诊断水平.     

血清CEA、CA125、TSGF联合检测对乳腺癌的诊断价值

目的探讨血清癌胚抗原(CEA)、糖类抗原-125(CA125)以及恶性肿瘤特异生长因子(TSGF)联合检测对乳腺癌临床诊断的价值。方法选取2017年5月至2019年5月我院收治的70例乳腺疾病患者为研究对象,其中包含乳腺癌患者35例(乳腺癌组),良性乳腺增生患者35例(良性乳腺结节组)。选取同期于我院进行健康体检的健康女性30例作为对照组。分析各组对象血清CEA、CA125、TSGF表达情况,以及CEA、CA125、TSGF联合检测在乳腺癌诊断中的应用。结果乳腺癌组患者血清中CEA、CA125、TSGF水平明显高于良性乳腺结节组及对照组(均P<0.05),而良性乳腺结节组患者血清CEA、CA125以及TSGF水平与对照组差异无统计学意义(均P>0.05)。CEA诊断阳性率、阴性率分别为47.1%、52.9%;CA125诊断阳性率、阴性率分别为51.4%、48.6%;TSGF诊断阳性率、阴性率分别为50.0%,50.0%,联合诊断阳性率、阴性率分别为64.3%、35.7%。CEA、CA125以及TSGF单独检测的诊断灵敏度、特异度、准确度以及约登指数差异无统计学意义(均P>0.05),而联合检测诊断的灵敏度均显著高于CEA、CA125、TSGF单独检测(均P<0.05)。联合检测诊断的特异度、准确度和约定指数与CEA、CA125、TSGF单独检测水平差异均无统计学意义(均P>0.05)。结论乳腺癌发病期间存在多种因子的水平变化。CEA、CA125、TSGF联合检测可以提高乳腺癌的诊断效能。     

卵巢癌患者血清HE4、CA125、CA72-4及炎性因子水平检测的临床价值评估

目的:探讨血清人附睾蛋白4(HE4)、糖类抗原125(CA125)、糖类抗原72-4(CA72-4)及炎性因子IL-6、IL-8、IL-17水平检测对卵巢癌患者的临床价值。方法:选取2015年2月至2017年2月我院收治的卵巢肿瘤患者81例,包括卵巢恶性肿瘤组39例及卵巢良性肿瘤组42例,另选42例健康人作正常对照组,比较各组及临床不同分期卵巢癌患者血清HE4、CA125、CA72-4、IL-6、IL-8、IL-17水平的差异。结果:卵巢恶性肿瘤组血清HE4、CA125、CA72-4、IL-6、IL-8及IL-17水平均显著高于对照组(P0.05),而卵巢良性肿瘤组与对照组以上指标比较差异并无统计学意义(P0.05);随卵巢癌分期增加,患者血清HE4、CA125、CA72-4、IL-6、IL-8及IL-17水平呈上升趋势,以血清HE4、CA125及IL-17增加较为显著(P0.05),而Ⅰ期、Ⅱ期及Ⅲ期卵巢癌患者血清CA72-4、IL-6及IL-8在增加并不明显(P0.05)。结论:卵巢癌患者血清HE4、CA125、CA72-4、IL-6、IL-8及IL-17水平较高,且随临床分期增加呈上升趋势,以上指标可能有助于卵巢癌的诊断、治疗及病情评估。     

子宫内膜癌患者血浆溶血磷脂酸、血清癌抗原125及人附睾蛋白4的表达及临床意义

目的:探讨子宫内膜癌患者血浆溶血磷脂酸(LPA)、血清癌抗原125(CA125)及人附睾蛋白4(HE4)的表达及与临床病理特征的关系。方法:选取2014年3月到2016年6月在同济大学附属第一妇婴保健院进行治疗的子宫内膜癌患者76例作为观察组,另选取我院同期收治的子宫内膜增生症患者50例作为良性病变组,再选取同期在我院体检结果为健康的志愿者50例作为对照组。比较三组受试者血浆LPA、血清CA125以及HE4水平。以病理检测结果为金标准,计算血浆LPA、血清CA125、HE4诊断子宫内膜癌的灵敏度、特异度、阳性预测值、阴性预测值。分析子宫内膜癌患者血浆LPA、血清CA125以及HE4水平与临床病理特征的关系。结果:观察组的血浆LPA、血清CA125以及HE4水平均高于对照组和良性病变组(P0.05),良性病变组的血浆中CA125水平高于对照组(P0.05)。血浆LPA、血清CA125以及HE4诊断子宫内膜癌的灵敏度、特异度、阳性预测值、阴性预测值比较无统计学差异(P0.05)。子宫内膜癌患者LPA水平与年龄、肿瘤直径无关(P0.05),与淋巴结转移、临床分期、分化程度、疾病类型有关(P0.05);CA125、HE4水平与年龄、疾病类型无关(P0.05),与淋巴结转移、临床分期、肿瘤直径、分化程度有关(P0.05)。结论:子宫内膜癌患者血浆LPA、血清CA125以及HE4水平偏高,LPA、CA125、HE4与部分临床病理参数相关,三指标对子宫内膜癌均有较高的诊断价值。     

血清CA125 和OPN 联检在卵巢癌患者中的诊断价值

目的:探讨CA125和OPN联检在卵巢癌诊断中的应用价值。方法:以50例正常健康人为对照,对经组织病理学确诊的69例卵巢癌患者和54例卵巢良性肿瘤患者术前行血清CA125(放免法)和OPN(ELISA法)测定。比较二种血清标志物在正常人、卵巢良性肿瘤和卵巢癌病例中的表达水平。以正常人血清OPN均值±1.96S作为上下界,计算OPN临界值,大于临界值即为OPN阳性。血清CA125≥35 U/mL为阳性。比较三组病例中血清CA125和OPN单检及联检的灵敏度及特异性。比较二种血清标志物在卵巢癌及卵巢良性肿瘤的不同组织分型中的灵敏度。结果:卵巢癌组血清CA125和OPN的水平均显著高于正常对照组和卵巢良性肿瘤组(P<0.01),OPN临界值为27 ng/mL。在卵巢癌诊断中CA125、OPN检测的敏感度分别为66.7%和85.5%,二者联检的敏感度为95.7%。同时二者联检对浆液性囊腺癌、粘液性囊腺癌和子宫内膜样腺癌的敏感度分别为91.7%、70.0%和66.7%。结论:血清CA125和OPN是卵巢癌诊断的敏感性指标,二者联检可提高卵巢癌、特别是粘液性卵巢癌诊断的敏感度。     

A Unique Protease Cleavage Site Predicted in the Spike Protein of the Novel Pneumonia Coronavirus (2019-nCoV) Potentially Related to Viral Transmissibility

正Dear Editor,In December 2019, a novel human coronavirus caused an epidemic of severe pneumonia(Coronavirus Disease 2019,COVID-19) in Wuhan, Hubei, China(Wu et al. 2020; Zhu et al. 2020). So far, this virus has spread to all areas of China and even to other countries. The epidemic has caused 67,102 confirmed infections with 1526 fatal cases     

Curcuminoids as inhibitors of thioredoxin reductase: A receptor based pharmacophore study with distance mapping of the active site

Curcumin is the yellow pigment of turmeric that interacts irreversibly forming an adduct with thioredoxin reductase (TrxR), an enzyme responsible for redox control of cell and defence against oxidative stress. Docking at both the active sites of TrxR was performed to compare the potency of three naturally occurring curcuminoids, namely curcumin, demethoxy curcumin and bis-demethoxy curcumin. Results show that active sites of TrxR occur at the junction of E and F chains. Volume and area of both cavities is predicted. It has been concluded by distance mapping of the most active conformations that Se atom of catalytic residue SeCYS498, is at a distance of 3.56 from C13 of demethoxy curcumin at the E chain active site, whereas C13 carbon atom forms adduct with Se atom of SeCys 498. We report that at least one methoxy group in curcuminoids is necessary for interation with catalytic residues of thioredoxin. Pharmacophore of both active sites of the TrxR receptor for curcumin and demethoxy curcumin molecules has been drawn and proposed for design and synthesis of most probable potent antiproliferative synthetic drugs.     

The structure, reproduction and taxonomy of Vidalia and Osmundaria (Rhodophyta, Rhodomelaceae)

Comprises species occurring mostly in subtidal habitats in tropical, subtropical and warm-temperate areas of the world. An analysis of the type species, V. spiralis (Sonder) Lamouroux ex J. Agardh, a species from Australia, establishes basic characters for distinguishing species in the genus. These characters are (1) branching patterns of thalli, (2) flat blades that may be spiralled on their axis, (3) width of the blade, (4) primary or secondary derivation of sterile and fertile branchlets and (5) position of sterile and fertile branchlets on the thalli. Application of the latter two characters provides an important basic method for separation of species into three major groups. Osmundaria , a genus known only in southern Australia, was studied in relation to Vidalia , and its separation from the Vidalia assemblage is not accepted. Species of Vidalia therefore are transferred to the older genus name, Osmundaria. Two new species, Osmundaria papenfussii and Osmundaria oliveae are described from Natal. Confusion in the usage of the epithet, Vidalia fimbriala Brown ex Turner has been clarified, and Vidalia gregaria Falkenberg, described as an epiphyte on Osmundaria pro/ifera Lamouroux, is revealed to be young branches of the host, Osmundaria prolifera.     

New or rare chromosome counts in Artemisia L. (Asteraceae, Anthemideae) and related genera from Kazakhstan

Fifteen chromosome counts of six Artemisia taxa and one species of each of the genera Brachanthemum, Hippolytia, Kaschgaria, Lepidolopsis and Turaniphytum are reported from Kazakhstan. Three of them are new reports, two are not consistent with previous counts and the remainder are confirmations of very scarce (one to four) earlier records. All the populations studied have the same basic chromosome number, x = 9, with ploidy levels ranging from 2x to 6x. Some correlations between ploidy level, morphological characters and distribution are noted.     

Comparative morphology of the carpel in the Liliaceae: Hewardieae, Petrosavieae, and Tricyrteae

The young pistils in the melanthioid tribes, Hewardieae, Petrosavieae and Tricyrteae, are uniformly tricarpellate and syncarpous. They lack raphide idioblasts. All are multiovulate, with bitegmic ovules. The Petrosavieae are marked by the presence of septal glands and incomplete syncarpy. Tepals and stamens adhere to the ovary in the Hewardieae and the Petrosavieae but not in the Tricyrteae. Two vascular bundles occur in the stamens of the Hewartlieae and Tricyrtis latifolia. Ventral bundles in the upper part of the ovary of the Hewardieae are continuous with compound septal bundles and placental bundles in the lower part. Putative ventral bundles occur in the alternate position in the Tricyrteae and putative placental bundles in the opposite. position in the Petrosavieae. The dichtomously branched stigma in each carpel of the Tricyrteae is supplied by a bifurcated dorsal bundle.     

肝癌中HBV和HCV基因和抗原的分布及意义

采用原位分子杂交方法检测HCV RNA及HBV X基因;采用免疫组织化学方法研究HCV核心抗原,非结构区C33c抗原及HBxAg在肝细胞肝癌中的定位及分布.结果表明(1)HCV RNA、HBV X基因在肝细胞肝癌组织检出率分别为40%(55/136)和82%(112/136).HCV RNA定位于癌细胞的胞浆内,阳性细胞呈散在、灶状及弥漫分布三种形式;HBV X基因在肝癌细胞中的分布呈胞浆型、核型及核浆型,阳性细胞也呈上述三种分布形式;(2)HCV C33c抗原、核心抗原在肝细胞肝癌中的阳性率为81%(133/164)及86%(141/164).C33c抗原定位于癌细胞及肝细胞的胞浆内;核心抗原既定位于癌细胞核中,又可定位于胞浆中.C33c抗原阳性细胞以灶状分布为主;而核心抗原阳性细