新疆维吾尔族霍奇金淋巴瘤与EB病毒感染的关系

目的 探讨新疆地区维吾尔族霍奇金淋巴瘤与EB病毒感染的关系.方法 对52例病理确诊为霍奇金淋巴瘤(Hodgkin's lymphoma)的维吾尔族病例用免疫组化检测EBV,并对其中的27例用原位杂交检测EBV编码的mRNA(Epstein Barr virus encoded mRNA,EBER).结果 EBV:52例HL中40例阳性(76.9%),其中结节硬化型23例,混合细胞型10例,富于淋巴细胞型5例,淋巴细胞减少型2例.EBV在≤14岁的儿童中阳性率为95%(19/20),在14岁以上年龄组阳性率为65.5%(21/32).EBER:22例阳性,阳性率为81.5%(22/27),其中结节硬化型10例,混合细胞型8例,富于淋巴细胞型4例,无淋巴细胞减少型.EBV在≤14岁的儿童中阳性率为88.9%(8/9),在14岁以上年龄组阳性率为77.8%(14/18).结论 新疆维吾尔族霍奇金淋巴瘤中有高水平EBV感染的现象,尤其是儿童;霍奇金淋巴瘤各亚型的EBV感染率无明显差异.     

非霍奇金淋巴瘤与p53蛋白表达的关系

目的 :探讨非霍奇金淋巴瘤 (NHL)与 p5 3蛋白表达的关系。 方法 :用免疫组化S P法检测 10 2例 (低度恶性 2 3例 ,中度恶性 36例 ,高度恶性 4 3例 )NHLp5 3蛋白表达 ,根据 p5 3蛋白阳性细胞百分率将其表达水平分为 4级 :0级 (阴性 ) ,1级 (1%～ 2 5 % ) ,2级 (2 6 %～ 5 0 % ) ,3级 (>5 0 % )。结果 :低度恶性组 2 0 / 2 3(87% )p5 3表达为 0级 ,中度恶性组 31/ 36 (86 1% )表达为 1级 ,高度恶性组 33/ 4 3(76 7% )表达为 2～ 3级。 2 5例随访 7～ 6 8个月 ,p5 30～ 1级NHL完全缓解率 (CRR ,11/ 14 )高于p5 32～ 3级NHLCRR (1/ 11,P <0 0 1) ,前者生存率 (13/ 14 )高于后者 (3/ 11,P <0 0 1)。NHLp5 3蛋白表达水平与其恶性度密切相关 (P <0 0 1)。结论 :p5 3蛋白表达阳性细胞百分率是判断NHL恶性度、疗效及预后较可靠的参数。肿瘤性p5 3蛋白表达检测对中高度恶性NHL的诊断有参考价值     

肠道非霍奇金淋巴瘤与EB病毒、p53、p21ras的相关性

目的：研究肠道非霍奇金淋巴瘤（NHL）与EB病毒（EBV）感染p53、p21^ras蛋白表达及其相关性。方法：以SABC免疫组化方法检测瘤细胞p53、p21^ras基因的表达及EBV寡核苷酸探针（EBER）原位杂交。结果：19例肠道NHL好发部位小于肠下段和结肠，以单发瘤结节多见，常伴有表面溃疡形成。经免疫组化证实3例为T细胞淋巴瘤（15.79%），16例为B细胞淋巴瘤（84.21%）。依WHO分类，T细胞淋巴瘤为外周T细胞性（2／19例）和T／NK细胞性（1／19例）。EBV－EBER原位杂交3／19例有阳性表达，均为T细胞淋巴瘤，阳性细胞占肿瘤细胞的30％－80％。B细胞淋巴瘤未见阳性。p53的表达共有12例，占全部病例的63.16%，11例有p21^ras的表达，为57.9%，有8例同时检出p53和p21^ras的表达。结论；肠道淋巴瘤以B细胞淋巴瘤多发，并以惰性为多见，如为T细胞性淋巴瘤，提示多是侵袭性，且T细胞淋巴瘤与EBV相关性较高，而B细胞淋巴瘤无相关性。p53的表达与EBV感染无明显相关性，而p21^ras的表达与EBV感染似有关系。     

小儿恶性淋巴瘤与EB病毒的相关性

1　材料和方法2 3例标本均取自 1978～ 1998年间外检标本 ,全部标本均常规制成ＨＥ切片并行免疫组化标记分型。ＥＢＶ和 ｐ5 3检测为用超敏Ｓ Ｐ试剂盒、鼠抗ＥＢＶ(ＬＭＰ)和突变型 ｐ5 3蛋白单克隆抗体 ,同时取 15例 14岁及其以下病理诊断为良性淋巴组织增生的淋巴结行ＥＢＶ和 ｐ5 3蛋白检测作为对照 ,上述免疫组化试剂均购自福州迈新公司。2　结果2 .1　一般材料　淋巴瘤组 2 3例 ,男∶女 16∶7,年龄 3～ 13岁 ;ＥＢＶ阳性 15例 ,男∶女 11∶4,年龄 6 5± 2 6 (岁 ) ,ＥＢＶ阴性 8例 ,男∶女 5∶3,年龄 9 5± 3 31(岁 ) ,两组性别比无…     

人巨细胞病毒感染的霍奇金淋巴瘤中p53基因突变分析

目的：检测人巨细胞病毒（HCMV）感染的霍奇金淋巴瘤（HL）中是否存在p53基因突变热点区的基因突变。方法：从经原位杂交、免疫组化、显微切割等方法证实存在人巨细胞病毒感染的霍奇金淋巴瘤石蜡标本中提取DNA，采用PCR－SSCP和核酸测序方法对p53基因突变热点区的外显子进行基因突变检测。结果：应用p53外显子5、6、7、8的相应引物，对10例HCMV阳性的HL组织中DNA进行PCR扩增，产物经电泳检测，分别扩增出特异的条带，SSCP分析未见异常的迁移带，ex-on-8外显子核酸测序未见有碱基突变。结论：p53基因热点突变区的基因突变在HCMV阳性的HL中可能是不常见的。     

伯基特淋巴瘤与EB病毒的关系及其p53和bcl-2蛋白的表达

目的 了解柏基特淋巴瘤和ＥＢ病毒的关系及ｐ５３和ｂｃｌ－２蛋白的表达。方法 采用ＰＣＲ、原位ＰＣＲ及免疫组化ＬＳＡＢ方法,检测了２８例伯基特淋巴瘤石蜡包埋的组织块。结果 发现８例ＥＢ病毒ＤＮＡ阳性,阳性率为２８．５％,８例阳性病例做了原位杂交,其中３例为阳性。２７例做了ｐ５３和ｂｃｌ－２免疫组化检测,生病例各为１２例（４４．４％）和１３例（４８．１％）。Ⅰ￣Ⅱ期和Ⅲ￣Ⅳ期ｐ５３和ｂｃｌ－２阳性病例     

非霍奇金淋巴瘤EB病毒特异DNA序列的检测

目的　探讨EB病毒 (EBV)与中国南方地区非霍奇金淋巴瘤 (NHL)的相关性 ,以及EBV与不同类型NHL的关系。方法　采用PCR技术 ,检测 2 0 6例石蜡包埋的NHL组织及 2 3例反应性增生的淋巴组织中的EBV特异DNA序列。结果　(1 ) 2 0 6例NHL组织中 ,94例PCR扩增出EBV特异的DNA序列 ,阳性率 4 5 6 % ;对照组反应性增生的淋巴组织 2 3例中 ,5例阳性 ,阳性率 2 1 7% ;两者差异有显著性 (P <0 0 5 )。 (2 ) 2 0 6例NHL中B NHL 1 2 8例 ,EBV阳性者 4 8例 ,阳性率 37 5 % ;T NHL 78例 ,EBV阳性者 4 6例 ,阳性率 5 9 0 %。两者差异有显著性 (P <0 0 5 )。结论　EBV与中国南方地区NHL ,特别是T NHL有一定的相关性     

非霍奇金淋巴瘤的临床与骨髓细胞遗传学分析

目的研究非霍奇金淋巴瘤（non-Hodgkin lymphoma，NHL）的细胞遗传学、血液病理学、血液形态学、临床肿瘤指标与预后的相互关系。方法应用骨髓直接法和24h短期培养法制备染色体标本，用R显带技术，对20例NHL患者进行核型分析。所有患者均进行血清P53蛋白检测。结果20例NHL中出现骨髓浸润8例。20例NHL中，发现有异常核型9例，发生率45％（9／20）。异常类型包括：染色体数目异常3例，t（14，18）（q32；q21）1例，14q＋1例，t（8；14）（q24；q32）2例，t（8；14）（q24；q32）伴其他异常2例。伴异常核型的患者其血清P53蛋白含量显著高于正常核型者。结论t（8；14）（q24；q32）是NHL中涉及较多的染色体核型异常，伴此种核型异常的NHL患者预后不良，同时发现正常核型缺乏对预后也有不良影响。突变型P53值的增高和染色体核型异常有一定的相关性，也是预后不良的因素。     

鼻及咽部非霍奇金淋巴瘤158例临床特点及其与EB病毒感染的关系

目的探讨鼻及咽部原发性非霍奇金淋巴瘤（NHL）的临床特点、免疫表型及其与EB病毒感染的关系。方法对158例鼻及咽部原发性NHL进行了HE和免疫组织化学SP法（CD3、CD20、CD56、CD57）检查,按WHO2001年《造血和淋巴组织肿瘤的病理学和遗传学》标准进行分类;并对其中99例进行了EBER-1原位杂交的检测。结果158例鼻及咽部原发性NHL中,原发于鼻腔84例（53．2％）,扁桃体39例（24．7％）,咽部35例（22．1％）。结外鼻型NK／T细胞淋巴瘤101例（63．9％）、非特异性外周T细胞淋巴瘤23例（14．6％）,B细胞淋巴瘤34例（21．5％）。99例EBER-1原位杂交结果显示阳性率：结外鼻型NK／T细胞淋巴瘤为98．6％（70／71）,而非特异性外周T细胞淋巴瘤为66．7％（8／12）,B细胞淋巴瘤为43．8％（7／16）。结论鼻及咽部NHL中结外鼻型NK／T细胞淋巴瘤最为多见,与EB病毒密切相关,其病理诊断需结合其免疫表型特征及肿瘤部位。     

非霍奇金淋巴瘤中survivin、bcl-2、bax、p53表达及其与细胞增殖和凋亡的关系

目的研究非霍奇金淋巴瘤(non-Hndgkin’s lymphoma,NHL)中survivin、bcl-2、bax和p53指标表达的情况,比较它们在B-NHL和T-NHL中的差异,探讨它们在临床病理实践中的应用价值。方法应用免疫组化、原位凋亡检测及组织芯片技术对190例NHL进行检测。结果①survivin、bcl-2、bax、p53在75例B-NHL中表达的总阳性率分别为70·67%、57·33%、46·67%和36·00%,在115例T-NHL中表达的总阳性率分别为81·74%、44·35%、46·09%和40·00%,其中bcl-2表达在B-NHL和T-NHL之间差异有显著性(P=0·045);②随着B-NHL生物侵袭性的增强,survivin表达率和表达强度升高(P=0·001),bcl-2表达率和表达强度下降(P=0·018);③在低中度侵袭组中,随着NHL生物侵袭性的增强,突变型p53表达率升高;在高侵袭组中p53的表达率反而降低;④随着NHL生物侵袭性的增强,Ki-67表达升高(P=0·014和P=0·002)。结论①survivin是判断NHL恶性及侵袭性有意义的指标,联合检测survivin和bcl-2蛋白的表达情况对判断B-NHL的侵袭性可能有互补作用;②p53表达可用于评价低中度侵袭性NHL的生物学行为;③Ki-67蛋白表达强度是评估NHL肿瘤细胞增殖的良好指标,它对NHL侵袭性的分级具有较为重要的参考价值。     

Epstein-Barr virus (EBV) infection and p53 protein expression in gastric carcinoma

In the presented studies p53 protein expression was evaluated in samples of gastric carcinoma originating from 32 selected adult patients (with documented diagnosis of adenocarcinoma of the stomach and without the presence of Helicobacter pylori infection). Among the patients 14 individuals carried EBV-positive gastric carcinoma (group 1) while the 18 remaining patients carried EBV-negative gastric carcinoma (group 2). EBV infection was detected testing the tissue material for the presence of EBER by RNA in situ hybridization (ISH) and testing sera of the patients for EBV-specific antibodies. Expression of p53 protein was analysed using immunohistochemistry. Presence of p53 protein was noted in 9 (64.3%) cases of EBV-positive gastric cancer (group 1) and in 10 (55.5%) cases of EBV-negative gastric cancer (group 2). No significant differences were detected in the frequencies of p53 protein expression in the two studied groups. The results permit to conclude that abnormalities in p53 in gastric cancer are independent of EBV infection, even if EBV may participate in development of the tumour.     

Epstein-Barr virus and Hodgkin's lymphoma

Hodgkin's lymphoma (HL) is a lymphoproliferative disorder of B-lymphocytes. Epstein-Barr virus (EBV) antigens can be detected in tumours in up to 40% of all HL cases. Patients with EBV-associated HL also show increased levels of EBV-infected B-lymphocytes in blood compared with normal individuals and non-EBV-associated HL cases. A peculiar pattern of restricted EBV-antigen expression, dominated by latent membrane protein-1 (LMP-1), LMP-2 and EBV nuclear antigen-1, is the characteristic feature of tumour-specific Hodgkin/Reed-Sternberg cells. This knowledge has generated studies examining adoptive immunotherapy of autologous or allogeneic cytotoxic T-cells for the treatment of refractory EBV-positive HL cases. Whether aborted EBV or another infectious aetiology is involved in non-EBV-associated HL cases remains an open question.     

Epstein-Barr virus infection correlates with the expression of COX-2, p16INK4A and p53 in classic Hodgkin lymphoma

Classic Hodgkin lymphoma (cHL), a germinal-center related B cell neoplasm in almost all cases, is characterized by scarcity of the neoplastic Hodgkin/Reed-Sternberg (H/RS) cells. Epstein-Barr virus (EBV) has been shown to affect cell cycle and regulation of apoptosis. In total, 95 cases of cHL were studied. Five-micrometer sections were prepared and stained with hematoxylin and eosin and immunohistochemical streptavidin-biotin methods for EBV-LMP-1, COX-2, p53, p16, ki-67 and cleaved caspase-3. In-situ hybridization for EBV encoded RNA was used to confirm the detection of EBV in H/RS. There were 49 nodular sclerosis, 32 mixed cellularity, 8 lymphocyte-rich, and 6 lymphocyte-depleted subtypes in this series of cases. EBV, COX-2, p16^INK4A and p53 were detected in 55% (52/95), 64% (61/95), 62% (59/95), and 65% (62/95) of the cases respectively. EBV was detected in 62% (38/61), 70% (41/59), and 69% (43/62) of COX2, p16 and p53 positive cases respectively. On the other hand, EBV-non-infected cases of cHL are associated with 59% (20/34), 69% (25/36), and 73% (24/33) of COX2, p16 and p53 negative cases respectively. In conclusion, EBV infection is associated with the expression of COX-2, p16^INK4A and p53. EBV might be the dominant factor in determining the expression of these three proteins.     

Hodgkin's disease and peripheral T-cell lymphoma: composite lymphoma with evidence of Epstein-Barr virus infection

This paper reports the case of a patient with a composite lymphoma consisting of nodular sclerosing Hodgkin's disease and peripheral T-cell lymphoma. The Hodgkin and Reed-Sternberg (HRS) cells harboured the Epstein-Barr virus (EBV) and displayed a type II EBV latency (LMP1(+)/EBNA2(-)), whereas the neoplastic T-cells were EBV-negative. Four years later, the patient presented with a relapse of the peripheral T-cell lymphoma. In situ hybridization revealed numerous EBV-carrying lymphocytes, which were shown to be polyclonal B-cells with a latency III pattern of EBV gene expression (LMP1(+)/EBNA2(+)). This observation suggests that impairment of EBV-specific immunity in the micro-environment of T-cell lymphomas may facilitate the outgrowth of EBV-carrying B-lymphocytes and emphasizes the importance of determining the phenotype of EBV-infected cells, particularly when studying T-cell lymphomas. The results further suggest that the HRS cells and neoplastic T-cells were of different clonal origins. The detection of EBV-carrying cell populations admixed with the neoplastic T-cells at primary presentation and at relapse raises the possibility that the growth of the T-cell lymphoma was dependent on the presence of such cells.     

何杰金病中EB病毒感染和bcl—2蛋白的表达

目的探讨Ｅｐｓｔｅｉｎ－Ｂａｒｒ（ＥＢ）病毒与ｂｃｌ－２基因的关系。方法利用免疫组织化学ＬＳＡＢ法检测了６４例何杰金病ＥＢ病毒的潜在膜蛋白－１（ＬＭＰ－１）和ｂｃｌ－２蛋白的表达。用原位杂交方法检测了４１例何杰金病组织中的ＥＢＥＲ。又用双重染色的方法检测了７例ＥＢＥＲ和ｂｃｌ－２蛋白双阳性的何杰金病例。结果ＬＭＰ－１和ＥＢＥＲ的阳性率分别为３９％和４４％,所有ＥＢＥＲ阳性的病例ＬＭＰ－１均为阳性。ｂｃｌ－２蛋白的阳性率为２３％,其中仅有７例ＬＭＰ－１和ｂｃｌ－２蛋白同时阳性。双重染色结果为,在７例双阳性病例中ｂｃｌ－２阳性的细胞只有约５０％ＥＢＥＲ阳性,约４０％ＥＢＥＲ阳性的肿瘤细胞ｂｃｌ－２阳性。结论研究结果提示,在本组研究的病例中Ｒ－Ｓ细胞的ｂｃｌ－２蛋白的表达与ＥＢ病毒的存在与否无明显相关性。     

Human papillomavirus and Epstein-Barr virus infection, p53 expression, and cellular proliferation in laryngeal carcinoma

Laryngeal carcinomas are aggressive neoplasms with controversial association with the human papillomavirus (HPV) and Epstein-Barr virus (EBV). So far, the impairment of p53 protein function and its impact on cellular proliferation has not been studied adequately in these tumors. In this work, molecular biologic techniques were used to assess the frequency of HPV and EBV in 110 squamous cell carcinomas of the larynx. In addition, accumulation of p53 and Ki-67 cell proliferation antigen expression in malignant cells was assessed by immunohistochemical analysis. High-grade HPV was found in 37.3% of cases, and none had demonstrable EBV infection. Accumulation of p53 was found in 78.2% of the cases, and it was related to a high Ki-67 labeling index and higher histologic grade. The results demonstrate association of HPV with more than one third of laryngeal carcinomas studied, mainly glottic tumors. Tumors with increased cell proliferation were more frequently high grade, with p53 accumulation and lymph node metastasis.     

Association of Epstein-Barr virus infection with p53 protein accumulation but not bcl-2 protein in nasopharyngeal carcinoma

AIMS: The aim of this study was to investigate the association of Epstein-Barr virus (EBV) infection with status of p53 protein expression in nasopharyngeal carcinoma (NPC). The expression of EBV gene and gene product, p53 protein and bcl-2 protein in NPC was histopathologically studied. METHODS AND RESULTS: In-situ hybridization using oligonucleotide probe to EBV-encoded small RNAs (EBERs) and immunohistochemistry using monoclonal antibodies against EBV latent membrane protein 1 (LMP1), p53 protein and bcl-2 proteins were performed in 56 primary NPCs. EBERs were detected in 46 (82%) cases and LMP1 in 17 (30%) cases. While 30 of 32 (94%) cases in differentiated nonkeratinizing carcinoma (NKC, WHO type 2) and 16 of 17 (94%) cases in undifferentiated carcinoma (UC, WHO type 3) showed EBERs expression, neither five cases of keratinizing squamous cell carcinoma (KSCC, WHO type 1) nor two cases of adenocarcinoma showed EBERs. bcl-2 protein was detected in 50 (89%) cases, but its expression did not depend on expression of LMP1. p53 protein was detected in 31 (55%) cases, and there was a correlation between expression of EBERs and p53 protein (P < 0.05) but not between LMP1 and p53 protein. CONCLUSION: In this study, close association of NKC and UC but not KSCC with the latent infection with EBV was demonstrated. The induction of bcl-2 protein by LMP1, as shown in vitro, was not demonstrated. The association between overexpression of p53 protein and the presence of EBV suggests that some EBV-encoded protein, which may be different from LMP1, may play a role for nuclear accumulation of p53 protein.