Epstein–Barr virus presence in pediatric diffuse large B‐cell lymphoma reveals a particular association and latency patterns: Analysis of viral role in tumor microenvironment

Non‐Hodgkin's lymphoma represents 6–10% of pediatric malignancies, and diffuse large B‐cell lymphoma (DLBCL) is one of the three major subtypes. The 2008 WHO classification included a new entity, Epstein–Barr virus (EBV)‐positive DLBCL of the elderly, affecting patients >50 years. It has been demonstrated that EBV may play a role in tumor microenvironment composition, disturbing antitumor immune response and disease progression. As most studies were performed in adults, our aim was to assess EBV presence and latency pattern, as well as T‐cell microenvironment in a pediatric DLBCL series of Argentina. The study was conducted on formalin‐fixed paraffin‐embedded biopsies from 25 DLBCL patients. EBV‐encoded small nuclear early regions (EBERs) expression was performed by in situ hybridization, whereas EBV gene expression was analyzed using real‐time PCR. Epstein–Barr virus latent membrane proteins (LMP)1, LMP2A, CD3, CD4, CD8 and Foxp3 expression were assessed by immunohistochemistry (IHC). Forty percent of cases showed EBV expression, with a significantly higher incidence among patients <10 years (p = 0.018), and with immunosuppressed (p = 0.023). T‐cell subsets were not altered by EBV presence. Full EBV latency antigen expression (latency type III) was the most frequently pattern observed, together with BZLF1 lytic gene expression. One patient showed II‐like pattern (LMP1 without LMP2A expression). Based exclusively on IHC, some patients showed latency II/III (EBERs and LMP1 expression) or I (EBERs only). These findings suggest that EBV association in our series was higher than the previously demonstrated for elderly DLBCL and that EBV latency pattern could be more complex from those previously observed. Therefore, EBV could be an important cofactor in pediatric DLBCL lymphomagenesis.     

间变性大细胞淋巴瘤EB病毒基因表达产物的检测及其意义

目的：了解间变性大细胞淋巴瘤与埃泼斯坦－巴尔（ＥＢ）病毒的关系。方法：采用原位杂交及免疫组化ＬＳＡＢ法对１２例间变性大细胞淋巴瘤（ＡＬＣＬ）进行ＥＢＶ编码的ＲＮＡ（ＥＢＥＲｓ）及ＥＢＶ潜伏膜蛋白（ＬＭＰＩ）和潜在膜抗原检测。结果：本组１２例ＡＬＣＬ中ＥＢＥＲｓ阳性率为２５％（３／１２）,１２例ＡＬＣＬ ＬＭＰ１检出率为８．３％,ＥＢＮＡ２检出率为０（０／１２）;１２例ＡＬＣＬ免疫表型,８例为Ｔ源性     

鼻咽癌癌变过程中EBERs表达状况的研究

本文采用重组质粒ｐＳＰ６５（带有ＥＢＥＲｓ的基因）体外转录合成的地高辛标记的单链反义ＲＮＡ探针，用原位杂交方法检测处于癌变不同阶段的鼻咽活检组织中ＥＢＥＲｓ的表达状况。ＥＢＥＲｓ检出率为：鼻咽癌（２３／２４），正常鼻咽组织，慢性炎症增生及单纯性增生和化生（０／３０），异型增生和化生（５／８），头颈部其它肿瘤（０／５），鼻咽癌颈淋巴结转移灶（１／１），进一步证明：（１）ＥＢＶ与ＮＰＣ密切相关；（２）     

EB 病毒与非霍奇金淋巴瘤——附180 例报道

 目的　探讨 NHL与 EBV感染的相关性。方法　用 ISH方法检测 1 80例 NHL中EBV编码的 RNA( EBER1 /2 )。结果　 ( 1 ) EBER1 /2感染率为 42 .8% ( 77/1 80 ) ,感染率依次为TCL64.8%、NK/T46.2 %、BCL9.5 %。其中 TCL、NK/T与 BCL相比 ,P≤ 0 .0 0 5 ;( 2 )结内、结外EBV感染率依次为 2 2 .2 %、5 3.8% ,有显著差异 ,P<0 .0 0 5 ;( 3)面中线 (鼻腔 /口咽环 ) EBER1 /2感染率 72 .4% ( 5 5 /76) ,多形细胞性 EBER1 /2感染率 70 .1 % ( 5 4 /77)。结论　本地区 NHL与 EBV感染关系密切 ,TCL、NK/T淋巴瘤感染率明显高于 BCL,而且有部位限制性和亚型倾向性.     

EB病毒的潜伏感染及其编码的癌基因在鼻咽非霍奇金恶性淋巴瘤中的表达及意义

目的：探讨鼻咽非霍奇金恶性淋巴瘤患者中EB病毒的感染情况以及在EB病毒潜伏感染状态下编码的病毒癌基因产物潜伏膜蛋白-1(LMP-1)与鼻咽部非霍奇金恶性淋巴瘤的发生及预后的关系，另外还对该组鼻咽淋巴瘤的组织细胞起源进行了分析。方法：我们选用EBER-1／2 mRNA探针，经原位杂交方法检测了70例鼻咽恶性淋巴瘤和10例鼻咽慢性炎症病例中的EB病毒感染，同时使用免疫组化染色方法，分别标记了LMP-1、CD45R0、CD20及CD56阳性细胞。结果：EB病毒mRNA在鼻咽恶性淋巴瘤患者中的阳性表达率(62、9％)明显高于慢性炎症患者(0％)。LMP-1蛋白在上述两者间也有差异表达，肿瘤组(68．6％)高于炎症组(20．0％)(P=0．003)。本组有12例NK／T细胞淋巴瘤，特征性表达CD56，与LMP-1相关，但不具有特殊的生物学行为．LMP-1阳性高表达率除与鼻咽淋巴瘤患者出现临床B症状相关(P=0．043)外，与临床分期、出现区域淋巴结肿大均不相关，但LMP-1的表达与患者的预后密切相关，在死亡患者组中有LMP-1的高表达。结论：在鼻咽恶性淋巴瘤的发生、发展过程中，EB病毒的感染及其编码的癌蛋白LMP-1的产生起到了致关重要的作用。此外，LMP-1与不良临床特征和预后相关，同时还与CD56( )的NK/T细胞淋巴瘤相关。     

非免疫缺陷相关性B细胞淋巴瘤与EB病毒的相关性研究

目的探讨非免疫缺陷相关性淋巴结内Ｂ细胞淋巴瘤与ＥＢ病毒感染的关系。方法常规染色进行组织学分类,利用免疫组织化学ＬＳＡＢ法确定肿瘤的免疫表型。采用原位杂交方法检测ＥＢ病毒编码的小核ＲＮＡ（ＥＢＥＲｓ）。结果４０例淋巴结内Ｂ细胞淋巴瘤中,低度恶性２０例（中心母细胞－中心细胞性１２例、中心细胞性４例、淋巴细胞性４例）,高度恶性２０例（中心母细胞性１７例、免疫母细胞性２例、Ｂｕｒｋｉｔｔ样１例）。所有病例中,Ｅ－ＢＥＲｓ阳性３例,占所检病例的７．５％,其中低度恶性１例,占低度恶性病例的５％,高度恶性２例,占高度恶性病例的１０％,阳性细胞约占肿瘤细胞的３０％～６０％。结论非免疫缺陷相关性淋巴结内Ｂ细胞淋巴瘤可能与ＥＢ病毒的感染有关,但不是主要致病因素。感染率与恶性程度无明显关系。     

中线恶网中的EB病毒感染

目的　观察一组中线恶网病变组织中 EB病毒感染的存在情况及其异形淋巴样细胞( atypic al lymphoid cells,AL Cs)的免疫表型。方法　 37例病变组织切片作 DNA- RNA原位杂交 ,检测 EB病毒编码的小分子 RNA( EBER) ,作免疫组化染色看 EB病毒隐伏膜蛋白 ( L MP)抗原的表达及 ALCs的免疫表型 ;其中 15例用 PCR方法检测了 EBV- DNA。结果　 ( 1) 31/ 37例 ,占 83.8%之ALCs呈 EBER 1/ 2阳性反应 ;12 / 15例 ,占 80 %检出 EBV- DNA;5/ 19例 ,占 2 6.3%之少部分 AL Cs呈 L MP阳性反应。 ( 2 ) 2 0 / 37例 ,占 54.1%之 ALCs同时表达 CD3及 CD56抗原 ;5/ 19例 ,占 2 6.3%之少部分 ALCs呈 CD30 反应。结论　该组中线恶网病例中存在着较高比率的 EB病毒隐性感染 ,其ALCs既表达 T细胞分化抗原 ,同时也高水平地表达自然杀伤细胞抗原 ,CD56。作者还复习讨论了多种淋巴增生性疾病中 EBV感染的存在情况。     

鼻咽癌中EBV感染与某些基因产物表达的关系

目的　观察EB病毒RNA(Epstin Barrvirus ,EBV)、膜蛋白 (LMP 1)、c erbB 2、CyclinD1,bcl 2和p5 3蛋白在鼻咽癌组织中的表达 ,探讨其相互间关系及其在鼻咽癌发生发展中的作用。方法　采用原位分子杂交技术检测了 36例鼻咽癌组织中EBV编码的encodedsmallRNAs(EBERs)、用免疫组化技术检测LMP 1、CyclinD1、c erbB 2、bcl 2和 p5 3蛋白的表达。 结果　36例鼻咽癌组织中全部检出EBVRNAs ,阳性率为 10 0 % (36 /36 ) ,LMP14 4 .4 % (16 /36 ) ,CyclinD15 2 .8% (19/36 ) ,c erB 25 8.3% (2 1/36 ) ,bcl 2 4 4 .4 % (16 /36 ) ,p5 333.3% (12 /36 )。鼻咽癌组织中EB病毒感染与c erB 2、CyclinD1癌基因的表达、p5 3抑癌基因的失活之间有明显的关系。结论　鼻咽癌与EB病毒作为致瘤病毒激活癌基因蛋白的表达密切相关。鼻咽活检组织中有EBERs及LMP 1的检出 ,对确定鼻咽癌的诊断具有一定的价值。     

EB病毒与结直肠癌的相关性

背景与目的:研究表明,EB病毒(Epstein-Barrvirus,EBV)除与鼻咽癌密切相关外,可能与其它癌症相关。本研究旨在探讨EBV与中国人结直肠癌的关系。方法:采用PCR方法从90例原发性结直肠癌标本及25例配对的癌旁标本检测EBVLMP1(latentmembraneprotein1)基因的第3外显子及BamHⅠW片段的部分序列;采用免疫组织化学方法检测EBNA1(EBVnuclearantigen1)和LMP1的表达,采用原位杂交检测EBERs(EBV-encodedRNAs)的表达。结果:在90例原发性结直肠癌标本中,EBV基因阳性率为27.7%(LMP1外显子3)和32.2%(W片段),而25例癌旁组织中只有1例(4.0%)EBV基因阳性,癌组织和癌旁组织EBV阳性率差异有显著性(P<0.001)。29例W片段阳性的大肠癌标本中,有23例(79.3%)EBNA1表达阳性,只有1例(3.4%)EBERs阳性,阳性细胞主要为癌细胞,阳性信号集中在核内;而在8例W片段阴性的标本中,未检测到EBNA1的表达,也未检测到EBERs;以上标本中均未检测到LMP1的表达。结论:EBV与部分中国人结直肠癌相关。     

鼻咽癌组织中EB病毒感染与癌基因表达的关系

目的 观察EB病毒（epstein-barr virus,EBV)RNA、潜伏膜蛋白（LMP－1）、细胞周期素D1（cyclin D1)及c-fos在鼻咽癌组织中的表达，并分析其相互关系。方法 采用原位分子杂交技术检测36例鼻咽癌组织中EBV编码的小分子RAN（encoded small RNAs,EBERs)，采用免疫组化技术检测LMP－1及cyclin D1、c-fos的表达。结果 36例鼻咽癌组织中EBV RNAs阳性率为100．0％（36／36），LMP－1阳性率为44．4％（16／36），cyclin D1阳性率为52．8％（19／36），c-fos阳性率为61．1％（22／36）。LMP－1表达与cyclin D1、c-fos表达有明显的关系。结论 鼻咽癌发生是多步骤、多基因改变的过程。鼻咽活检组织中有EBERs及LMP－1的检出，对鼻咽癌的诊断具有一定的价值。     

胃癌组织EB病毒感染与miR-101EZH2 COX-2表达关系的研究

  目的   探讨甘肃省武威地区胃癌患者EB病毒（Epstein-Barr virus,EBV）感染状况及miR-101、EZH2、COX-2在EBV相关胃癌发生发展中的作用。   方法   应用组织芯片、原位杂交和免疫组织化学技术检测120例胃癌组织及相应癌旁组织中EBV小RNA（EBER）、miR-101、EZH2、COX-2的表达情况。   结果   120例胃癌组织EBV阳性率为10.0%,EBV相关胃癌有较少的淋巴结转移,好发于贲门、胃体（P < 0.05）。miR-101、EZH2、COX-2在120例胃癌组织和相应癌旁组织的阳性率差异有统计学意义（P < 0.05）。12例EBV阳性胃癌组织miR-101、EZH2、COX-2和108例EBV阴性胃癌组织3个分子的表达率差异有统计学意义（P < 0.05）。胃癌组织EBV感染和miR-101表达呈正相关,EBV相关胃癌组织miR-101表达和淋巴结转移、COX-2、EZH2表达均呈负相关（P < 0.05）。   结论   EB病毒感染与武威地区胃癌的发生有一定关系;EBV相关胃癌和EBV阴性胃癌在淋巴结转移和发生部位的差异有统计学意义;miR-101、EZH2、COX-2与EB病毒相关胃癌的发展有一定关系。      

Epstein‐Barr virus‐positive diffuse large B‐cell lymphoma association is not only restricted to elderly patients

Diffuse large B‐cell lymphoma (DLBCL), the most common group of malignant lymphomas, account for 30% of adult non‐Hodgkin lymphomas. The 2008 World Health Organization (WHO) classification included a new entity, Epstein‐Barr virus (EBV)+ DLBCL of the elderly, affecting patients aged 50 years or older. However, some reports of younger EBV+ DLBCL cases, without evidence of underlying immunosuppression, can be found. The role of EBV in tumor microenvironment composition in DLBCL is still not well understood. Our aim was to assess EBV presence and latency pattern as well as tumor T‐cell population in an adult DLBCL series of Argentina. The study was conducted on biopsies from 75 DLBCL patients. EBERs expression was performed by in situ hybridization, while EBV gene expression was analyzed using real‐time polymerase chain reaction. LMP1, LMP2A, EBNA2, EBNA3A, CD4, CD8 and Foxp3 expression was assessed by immunohistochemistry. Nine percent of cases showed EBV expression, with similar frequency among patients younger than 50 years and 50 years or older (13% and 8%, respectively). T‐cell subsets were not altered by EBV presence. Latency type II was the most frequently observed, together with lytic gene expression in EBV+ DLBCL, with ≥20% of EBERs+ cells. These findings suggest that EBV+ DLBCL in our series was similar to the previously described in Asia and Latin‐America, displaying latency II or III expression profile and no age‐specific characteristics. Finally, EBV+ DLBCL may be an entity that is not only restricted to patients who are older than 50 years of age, in consequence the age cutoff revision may be a current goal.     

涎腺恶性淋巴上皮病变临床病理特征及其与EB病毒的相关性

目的：了解涎腺恶性淋巴上皮病变的临床病理特征及其及埃泼斯坦-巴尔病毒（Epstein-BarrVirus,EBV)的关系。方法：采用原位杂交和免疫组化LSAB法对41例涎腺恶性淋巴上皮病变（Malignantlymphoepithelial lesion,MLEL)进行EBV编码的RBV-endcoded SmallRNAs,EBERs)、及EBV潜在膜蛋白（ＬatentActivator,ZEBRA)检测。结果：（１）本组４１例涎腺ＭＬＥＬ ＥＢＥＲs４０例阳性,阳性率９７.56％。（２）４１例涎腺ＭＬＥＬＬＭＰ１阳性检出率７５.6%（３１／４１）,ＥＢＮＡ２未检出（０／２０）,ＺＥＢＲＡ仅１例阳性。结论：本结果表明ＥＢＶ与ＭＬＥＬ存在密切关系。很可能在其发病中起着重要作用。     

中国南方鼻咽鳞状细胞癌与EB病毒感染的关系

目的：探讨中国南方鼻咽癌高发区鼻咽鳞状细胞癌或称角化性鳞状细胞癌（Ｋｅｒａｔｉｎｉｚｉｎｇ ｓｑｕａｍｏｕｓ ｃｅｌｌ ｃａｒｃｉｎｏｍａ,ＫＳＣＣ）是否也如非角化性癌那样与ＥＢ病毒感染有密切的关系。方法：应用ＰＣＲ Ｓｏｕｔｈｅｒｎ ｂｌｏｔｔｉｎｇ、原 位分子杂交和免疫组化法检测３８例鼻咽鳞状细胞癌细胞中有ＥＢ病毒ＤＮＡ及其产物ＥＢＮＡ－１,ＥＢＮＡ－２,ＥＢＥＲＳ,ＬＭＰ－１,ＺＥＢＲＡ,Ｅ     

不同类型淋巴瘤438例EB病毒分布特点

目的 探讨不同类型淋巴瘤中EB病毒(EBV)的分布特点.方法 选用免疫组织化学EnVision法标记ALK1、CD3、CD5、CD7、CD10、CD15、CD20、CD23、CD30、CD38、CD43、CD56、CD68、CD79、CD99、CyclinD1、EMA、TdT与EBV潜伏膜蛋白(LMP-1),原位杂交技术标记EBV编码的RNA(EBER).按照2008年WHO淋巴造血系统肿瘤分类标准对存档的438例淋巴瘤组织标本重新分类.结果 在B细胞非霍奇金淋巴瘤(B-NHL)、NK/T细胞淋巴瘤和霍奇金淋巴瘤(HL)中EBER阳性率分别是5.4％(14/261)、16.5％(19/115)和59.7％(37/62),LMP-1阳性率分别为5.4％(14/261)、5.2％(6/115)和59.7％(37/62).弥漫大B细胞淋巴瘤(DLBCL)患者中,EBER在60岁以上组中的阳性率(13.2％,7/53)明显高于60岁及以下组(1.2％,1/81)(P＜0.05);在NK/T细胞淋巴瘤中LMP-1蛋白表达与EBER表达具有不一致性,EBER阳性率明显高于LMP-1(P＜0.05);5例鼻型NK/T细胞淋巴瘤中全部表达EBER;在HL淋巴瘤中LMP-1蛋白表达与EBER表达具有一致性.结论 EBV感染与淋巴瘤类型相关,EBV在鼻型NK/T细胞淋巴瘤中表达率高,HL次之.鉴于EBER与LMP-1在HL中的一致性表达,出于经济学考虑,LMP-1可代替EBER用作EBV的检测.EBV可能在鼻型NK/T细胞淋巴瘤、HL等的发生、发展中有重要作用.     

乳腺癌患者EB病毒感染与癌基因c-erbB-2相关性的研究

目的：探讨乳腺癌患者EB病毒（Epstein—Barr virus，EBV）感染与癌基因c—erbB-2相关性。方法：原位杂交法检测乳腺癌患者癌组织及相应癌旁组织石蜡标本中EBV编码的小RNA（EBER1）；免疫组化法检测EBV阳性乳腺癌及EBV阴性乳腺癌标本癌基因c—erbB-2的表达状况。结果：180例乳腺癌患者癌组织标本中检测到17例EBER1表达，阳性率为9．4％；而相应癌旁组织中均未检测到EBV感染，二者差异有显著性（P〈0．05）。EBV阳性乳腺癌组c—erbB-2蛋白表达显著高于EBV阴性（P〈0．01）。结论：部分乳腺癌患者EB病毒感染与癌基因c—erbB-2有-定的相关性。     

天津地区上呼吸道恶性淋巴瘤临床病理、免疫表型及其与EB病毒相关性的研究

目的 :研究天津地区上呼吸道恶性淋巴瘤的临床病理、免疫表型及与 EB病毒的关系。方法 :应用单克隆抗体 U CHL - 1、CD3、L2 6 、4KB5 、CD79a、L CA、EMA、溶菌酶等抗体及 CS1- 4(L MP- 1)进行免疫组化染色 ,以进行淋巴瘤确诊、淋巴瘤免疫表型研究和 EB病毒感染情况的分析 ;EB病毒寡核苷酸探针 (EBER1/ 2 )原位杂交检测 ,探讨瘤细胞 EB病毒感染情况及与 EB病毒潜在膜蛋白表达的相关性。结果 :12 5例上呼吸道原诊断为恶性淋巴瘤和高度怀疑恶性淋巴瘤的病例中 112例确诊为淋巴瘤 ,诊断符合率 89.6 %。其中 6 6例为 T细胞性淋巴瘤 (占5 8.93% ) ,46例为 B细胞性淋巴瘤 (占 41.0 7% )。男性明显多于女性 (85例 / 2 7例 )。平均年龄 48.2 7岁 (10岁～ 88岁 )。 EBV- EBER1/ 2原位杂交检测 T细胞性淋巴瘤 34例 ,17例阳性 ,占 5 0 % ,阳性细胞占肿瘤细胞的 2 0 %～80 % ,EBV潜在膜蛋白 L MP- 1检测 5 3例 ,11例阳性 ,占 2 0 .75 % ,阳性率低于 EBER探针。结论 :天津地区上呼吸道恶性淋巴瘤以 T细胞性淋巴瘤为多见 ,发病可能与 EB病毒感染有关。     

Association of immunoescape mechanisms with Epstein-Barr virus infection in nasopharyngeal carcinoma

We have investigated the association of immunoescape mechanisms in nasopharyngeal carcinoma (NPC) lesions with Epstein-Barr virus (EBV) infection and clinical course of the disease. Tumor biopsy specimens obtained from 36 Japanese NPC patients were examined for antigen processing machinery component and HLA class I antigen expression, CD8(+) T cell infiltration, and Fas, Fas ligand (FasL) and IL-10 expression using immunohistochemical staining. The results were correlated with the histopathological characteristics of the lesions, the clinical course of the disease and EBV infection. LMP2, TAP1, tapasin and HLA class I antigens were downregulated in more than 65% of the lesions tested, while FasL, Fas and IL-10 were expressed in at least 60% of the lesions. Statistical analysis showed that (i) HLA class I antigen expression was significantly correlated with LMP2 and tapasin expression (r = 0.39 and 0.45, respectively); (ii) CD8(+) T cell infiltration into tumor lesions was significantly correlated with HLA class I antigen, LMP2 and Fas expression (r = 0.34, 0.49 and 0.44, respectively); (iii) LMP2 and FasL expression was significantly correlated with IL-10 expression (r = 0.49 and 0.52, respectively); (iv) IL-10 expression was significantly associated with EBERs and EBV oncoprotein LMP1 expression (p = 0.00078 and 0.015, respectively) and (v) FasL overexpression was significantly associated with reduced patients' survival (p = 0.033). Multivariate analysis identified FasL overexpression as an independent unfavorable prognostic marker. These results suggest that NPC cells may utilize multiple immunoescape mechanisms, including dysfunction of HLA class I antigens and Fas/FasL apoptosis pathways. Furthermore, FasL expression appears to be associated with IL-10 upregulation in EBV positive NPC cells.     

鼻腔鼻窦非霍奇金淋巴瘤免疫表型及其与EB病毒感染的关系

背景与目的:鼻腔鼻窦非霍奇金淋巴瘤(non-Hodgkin's lymphoma,NHL)的患病率和免疫表型组成具有地域性差异.本研究探讨中国广州地区57例鼻腔鼻窦NHL免疫表型及其与EB病毒(Epstein-Barr virus,EBV)感染的关系.方法:收集2000年4月1日至2006年10月31日中山大学肿瘤防治中心病理科57例鼻腔鼻窦NHL标本.免疫组化染色确定免疫表型,EBER原位杂交及PCR检测EBV感染情况.结果:在同期诊断的1 412例NHL中,71例(5.03%)发生于鼻腔鼻窦,其中仅有57例适用于本研究.57例鼻腔鼻窦NHL患者中,男性38例,女性19例,年龄3～75岁,中位年龄50岁;44例(77.19%)为鼻型NK/T细胞淋巴瘤,其中37例(84.09%)为EBV /CD56 NK细胞肿瘤,7例(15.91%)为EBV /CD56-细胞毒性T细胞表型;11例(19.30%)为B细胞淋巴瘤,其中6例为弥漫大B表型,2例为Burkitt(Burkitt样)淋巴瘤(EBV ),1例为髓外浆细胞瘤(EBV ),1例为MALT淋巴瘤(EBV-),1例为小淋巴细胞性淋巴瘤(EBV-);2例(3.51%)为外周T细胞淋巴瘤(EBV-).37例适用DNA检测的病例中,25例(67.57%)感染缺失型LMP1(del-LMP1)EBV株,12例(32.43%)感染野生型LMP1(wt-LMP1)EBV株.结论:鼻腔鼻窦NHL最常见的类型为鼻型NK/T细胞淋巴瘤,可进一步分为EBV /CD56 NK细胞及EBV /CD56-细胞毒性T细胞表型.NK/T细胞淋巴瘤均感染了EBV,EBV株主要为del-LMP1型.     

Retinoblastoma protein and Epstein-Barr virus (EBV) expression in South African Hodgkin's disease

The aim of this study was to explore the expression of retinoblastoma protein and EBV status in a cohort of cases of Hodgkin's disease from South Africa. Seventy one cases of Hodgkin's disease were accessed over a 6-year period and were classified according to the Rye Classification. Relevant sections were stained with commercially available antibodies to retinoblastoma protein (pRb) and EBV-LMP-1. In addition, in situ hybridization for EBERs was also performed. The results of this study show that 43 of 71 cases expressed EBV by both immunohistochemistry and in situ hybridization. These included 18 mixed cellularity, 19 nodular sclerosis and six lymphocyte depleted subtypes. pRb expression was seen in lymphocytes, mononuclear Hodgkin's and Reed–Sternberg cells in 67 of the cases. From this study it appears that pRb expression is seen in the majority of cases of Hodgkin's disease: 67/71 (94·4 per cent). Thirty-nine of 43 cases (90·7 per cent) of EBV positive cases were also positive for pRb. The results of this study indicate that pRb immunoexpression is detected in the vast majority of cases of Hodgkin's disease, and that this expression is independent of the EBV status of the case. © 1997 John Wiley & Sons, Ltd.