1235例妇科门诊患者高危型HPV感染状况及亚型分布调查研究

目的了解本地区妇科门诊患者宫颈高危型HPV感染状况及亚型分布,为今后的宫颈癌前病变、宫颈癌防治提供临床依据。方法采用基因芯片技术对1 235例妇科门诊患者进行HPV筛查,筛查出的阳性患者应用流式荧光杂交法进行高危型HPV亚型检测,分析比较宫颈炎、宫颈鳞癌及宫颈腺癌患者高危型HPV感染情况及亚型分布差异。结果六安市金安区妇幼保健院妇科门诊患者HPV感染率高达60%,其中高危型HPV感染率为43. 2%,主要以HPV16、HPV18为主;低危型HPV感染率为30.0%,主要以HPV11为主;单一感染阳性率为34. 1%,而混合型感染高达65. 9%,且两者均以HPV16型和HPV18型为主。宫颈炎患者HPV16型、HPV18型及HPV16 ＋ HPV18型的检出率明显低于宫颈鳞癌和宫颈腺癌患者,其中宫颈腺癌患者HPV16 ＋ HPV18型混合感染率最高。结论妇科门诊患者HPV感染率较高,宫颈癌患者HPV16及18型检出率显著高于宫颈炎患者,加强HPV高危基因型的监测有助于预警宫颈癌尤其是宫颈腺癌的发生。     

广州市花都区789例人乳头瘤病毒感染状况及其基因型研究

目的 对广州市花都区789例疑似人乳头瘤病毒( HPV)感染的妇女进行调查,研究HPV感染状况和基因亚型分布情况.方法 采用荧光定量聚合酶链式反应(Fluorescence quantitative PCR,FQ-PCR)对789例疑似HPV感染患者的宫颈分泌物进行21种人乳头瘤病毒基因亚型的检测.结果 (1)789例标本中,HPV阳性占48.42％(382/789),共检出10种基因型,其中检出单一低危型(HPV6、11、43和44型)279例,占感染者73.04％;单一高危型( HPV16、18、33、52、53、58)68例,占感染者17.80％;多重感染35例,占感染者9.16％.低危型以HPV6、11为主,高危型以HPV16、18为主.HPV6为主要致病基因型,检出率为34.0％ (P ＜0.01);(2)各年龄段间感染率差异无统计学意义(P＞0.05).结论 花都区HPV感染率较高,且多为单一轻危型感染,以HPV6为主要感染亚型,HPV基因型分布有助于确定宫颈癌发生的高危因素及筛查高危人群,对本地区HPV疫苗开发、应用具有重大意义.     

HPV基因分型检测在宫颈癌筛查中的应用

目的:探讨人乳头瘤病毒(human papilloma virus,HPV)基因分型技术在宫颈癌筛查中的临床应用价值。方法:采用反向斑点杂交法对HPV基因型进行分析,包括低危型(如6、11、42、43、44型等)和高危型(如16、18、31、33、35、MM4型等)共23个型别。结果:98例样本中检出HPV阳性者38例,23种基因型中共检出15种HPV型别,HPV总感染率38.8%(38/98)。慢性宫颈炎患者中HPV感染率30.4%(14/46),检测到的HPV亚型主要是HPV43,11,6,42,31和51(其中HPV6,42,31,51检出率一致)。CINI患者HPV感染率15.4%(4/26),最常见的HPV亚型为HPV35,其次为HPV16,52,53和59(其中16,52,53,59检出率一致)。CINⅡ患者HPV感染率71.4%(10/14),以HPV16,6,11,51等亚型最常见。CINⅢ患者HPV感染率75%(6/8),HPV亚型以HPV16,18,31,53为主。SCC患者HPV阳性率为100%(4/4),HPV16检测率最高,其次为HPV52,18,33,58,59和66。结论:持续的HPV感染与宫颈疾病有着密切的关系。HPV基因型的检测为临床进行宫颈疾病的筛查、诊断、治疗以及预后观察提供了较大的帮助。     

青岛地区HPV亚型检测及其在宫颈病变中的意义

目的调查青岛地区妇科门诊就诊女性人群人乳头状瘤病毒(human papillomavirus,HPV)感染状况和基因型分布情况,以及与宫颈病变的关系。方法选取2016年6月-2017年6月于我院妇科门诊就诊,有性生活史并要求行HPV亚型检测的患者,共计11 885例,其中5 434例患者同时行TCT检测,分别分析年龄、多重感染及HPV亚型与宫颈病变的关系。结果 11 885例受检者中HPV总感染率为33.51%(3 983/11 885),其中:高危型HPV占82.59%(5 076/6 146),主要包括HPV16、HPV52、HPV58;低危型HPV占17.41%(1 070/6 146),主要包括HPV81、HPV6、HPV11。HPV单一亚型感染率为63.65%(2 535/3 983),多重感染率为36.35%(1 448/3 983)。不同年龄段HPV感染率差异有统计学意义(P0.01),呈"U"型,≤29岁感染率最高(43.20%),HPV感染率随TCT检查诊断级别的升高而显著升高(P0.01),HSIL组HPV感染率最高(93.12%)。结论青岛地区高危型HPV主要亚型为HPV16、HPV52、HPV58;不同年龄段及不同TCT诊断级别HPV感染率不同,HPV感染与宫颈鳞状上皮内病变密切相关,为宫颈癌的筛查、防治提供初步理论依据。     

HPV检测在宫颈癌、宫颈癌前病变及宫颈炎患者中的临床应用

目的:研究人类乳头瘤病毒(HPV)检测在宫颈癌、宫颈癌前病变及宫颈炎患者中的临床鉴别价值。方法:选取2013年5月到2015年5月我院确诊的宫颈病变临床资料320例,根据病理诊断结果将患者分为宫颈癌组(59例)、癌前病变组(138例)以及宫颈炎组(123例),检测并比较三组HPV阳性检出率、HPV相对含量以及HPV-DNA亚型情况。结果:宫颈炎组HPV阳性检出率、HPV相对含量及HPV-DNA各亚型阳性率均显著低于癌前病变组和宫颈癌组,且癌前病变组均显著低于宫颈癌组,比较差异具有统计学意义(P0.05)。结论:HPV有助于鉴别宫颈癌、宫颈癌前病变及宫颈炎,对宫颈病变治疗和预后具有评价作用。     

HPV和HCMV在慢性宫颈炎病人中的分布及相关性研究

本文采用DNA-DNA分子杂交技术对病理组织学确诊的87例慢性宫颈炎患者和25例健康宫颈的宫颈活检组织DNA进行了HPV 6、11、16、18型DNA及HCMV HindⅢE片段检测。结果表明,对照宫颈检出率全部为0,慢性宫颈炎检出率HPV 6为16％,HPVll为12.6％,HPV16为11.5％,HPVl8为5％,总的HPV DNA相关序列为29.0％,HCMV为12.64％。经显著性检验,HPV DNA相关序列检出率在慢性宫颈炎与对照组间具显著性差异,HPV DNA相关序列阳性者患慢性宫颈炎的危险性为HPV DNA相关序列阴性者20.81的倍。本实验结果还表明HCMV阳性患者中72.7％的病人同时有HPV感染,提示HCMV感染与HPV感染有关。     

靖江地区宫颈病变患者高危型人乳头瘤病毒感染及其基因型分析

目的:研究靖江地区各组宫颈病变中高危型人乳头瘤病毒(HPV)感染率及其基因型分布。方法:采用实时荧光PCR检测方法检测334例宫颈脱落细胞标本中高危型HPV及其基因型。结果:高危型HPV在宫颈炎组、湿疣组、低度鳞状上皮细胞内病变(LSIL)组、高度鳞状上皮细胞内病变(HSIL)组中的感染率分别为24.2%、58.2%、49.3%、69.5%;HPV 16、18、33、58型在宫颈病变中是最常见的HPV型别,其中,HPV16型在宫颈炎组、湿疣组、LSIL组、HSIL组中所占比例逐渐增高,分别为17.9%、18.9%、30.8%、41.9%。结论:高危型HPV感染率随着宫颈病变程度的加重而升高,HPV16型是高危型HPV感染中的主要亚型,HPV18、33、52、58也较常见,其余型别很少。     

HPV分型检测在宫颈病变中的诊断价值

目的探讨人乳头状瘤病毒(Human papillomavirus,HPV)感染状况和基因型分布情况,以及与宫颈病变的关系。方法选取2016年6月-2017年6月于青岛市市立医院妇科门诊就诊,有性生活史并要求行HPV亚型检测的患者,共计11 885例,其中5 434例患者同时行液基薄层细胞学检测(thinprep cytologic test,TCT),分别分析HPV感染率、亚型与宫颈病变的关系。结果 11 885例受检者中HPV总感染率为33.51%(3 983/11 885),其中高危型HPV占82.59%(5 076/6 146),主要亚型为HPV16、HPV52、HPV58;低危型HPV占17.41%(1 070/6 146),主要亚型为HPV81、HPV6、HPV11。HPV 16/18型阳性率随宫颈细胞学病变程度的升高而显著增加(χ~2=1 090.12,P0.001),HSIL组感染率最高(62.43%)。HSIL组三种最常见的HPV是HPV16(41.76%)、HPV58(11.49%)、HPV33(8.05%)。HPV33阳性率随宫颈细胞学病变程度的升高而显著增加(χ~2=13.78,P=0.003)。结论 HPV型别、感染率与宫颈高度鳞状上皮内病变密切相关,为宫颈癌的筛查、防治提供初步理论依据。     

HPV分型及其高危亚型与宫颈病变的关系

目的研究HPV分型及其高危亚型与宫颈病变程度的关系。方法采用HPV基因分型技术对2014年7月至2015年8月在广州中医药大学第一附属医院妇科门诊就诊和体检的3 142例患者进行HPV分型检测,其中327例患者进行宫颈病理检查,分析高危型HPV感染与宫颈病变程度的关系。结果 3 142例受检对象中,21种HPV型别均被检测出,阳性检出者共969例,总检出率为30.80%,其中高危型741例,检出率为23.58%。随着宫颈病变级别的升高,高危型HPV阳性率也相应升高(P0.05),HPV16型感染阳性者宫颈癌发生率最高(P0.05)。高危型HPV阳性者中单一感染和多重感染与宫颈病变程度无关(P0.05)。结论高危型HPV亚型检测在宫颈病变预防和诊治中具有重要意义。     

妇科门诊人乳头瘤病毒感染基因型分析

目的:研究通辽地区女性患者下生殖道人乳头瘤病毒(HPV)感染率和基因型分布。方法:采用凯普导流杂交法,对364例妇科就诊患者宫颈标本进行HPV基因分型检测。结果:HPV基因检测总阳性率为17.03%(62/364),阳性患者中单一感染率为70.97%(44/62),多重感染率为29.03%(18/62);共检出16种HPV亚型,包括高危型12型,低危型4型,感染以HPV31、HPV18、HPV16三种亚型最多见,所占比例分别为13.09%、11.90%、10.71%。结论:通辽地区妇科门诊女性患者HPV感染以HPV31、HPV18、HPV16三型较为多见,常见感染亚型总体符合亚洲人群分布规律,但又具有独特的地区分布特点。     

Recent advances in the study of Kaposi's sarcoma-associated herpesvirus replication and pathogenesis

It has now been over twenty years since a novel herpesviral genome was identified in Kaposi's sarcoma biopsies. Since then, the cumulative research effort by molecular biologists, virologists, clinicians, and epidemiologists alike has led to the extensive characterization of this tumor virus, Kaposi's sarcoma-associated herpesvirus(KSHV; also known as human herpesvirus 8(HHV-8)), and its associated diseases. Here we review the current knowledge of KSHV biology and pathogenesis, with a particular emphasis on new and exciting advances in the field of epigenetics. We also discuss the development and practicality of various cell culture and animal model systems to study KSHV replication and pathogenesis.     

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.