AIM： To investigate the positive rate and types of cells that express Epstein-Barr virus-encoded small RNAs （EBERs） and to determine the distribution of EBER-expressing cells in idiopathic orbital inflammatory pseu...AIM： To investigate the positive rate and types of cells that express Epstein-Barr virus-encoded small RNAs （EBERs） and to determine the distribution of EBER-expressing cells in idiopathic orbital inflammatory pseudotumor （IOIP） tissues. METHODS： We retrospectively examined 40 archived paraffin specimens from two teaching hospitals in Southern China between January 2007 and January 2015 that were pathologically determined to exhibit IOIP. Eleven concurrent paraffin specimens of thyroid-associated ophthalmopathy （TAO） composed the control group. In situ hybridization was performed to detect EBERs. Immunohistochemistry was employed to detect CD3, CD20, Vimentin, and smooth muscle actin （SMA）, and the positive rate, types of positive cells, and distribution and location of EBERs were evaluated. RESULTS： The positive expression rate of EBERs was 47.5% （19/40） in the IOIP group, which was significantly higher than that in the TAO group [0 （0/11）, P=-0.011]. in the IOIP group, the lymphocyte infiltrative subtype, fibrotic subtype, and mixed subtype exhibited EBER-positive rates of 57.1% （12121）, 12.5% （118）, and 54.5% （6/11）, respectively, and no significant differences were found between these subtypes （P=0.085）. Positive signals of EBERs were mainly present in medium-small lymphocytes between or around follicles and in the nuclei of activated immunoblasts （14/19）. CONCLUSION： The positive rate, types, and distribution of EBER-expressing cells in IOIP have been documented.These findings are conducive for a better understanding of the underlying mechanisms of Epstein-Barr virus infection in IOIP pathogenesis.展开更多
BACKGROUND Emerging studies indicate the critical involvement of microorganisms,such as Epstein-Barr virus(EBV),in the pathogenesis of inflammatory bowel disease(IBD).Immunosuppressive therapies for IBD can reactivate...BACKGROUND Emerging studies indicate the critical involvement of microorganisms,such as Epstein-Barr virus(EBV),in the pathogenesis of inflammatory bowel disease(IBD).Immunosuppressive therapies for IBD can reactivate latent EBV,complicating the clinical course of IBD.Moreover,the clinical significance of EBV expression in B lymphocytes derived from IBD patients’intestinal tissues has not been explored in detail.AIM To explore the clinical significance of latent EBV infection in IBD patients.METHODS Latent EBV infection was determined by double staining for EBV encoded RNA and CD20 in colon specimens of 43 IBD patients who underwent bowel resection.Based on the staining results,the patients were divided into two groups,according to their latent EBV infection states-negative(n=33)and positive(n=10).Illness severity of IBD were assigned according to Crohn’s disease activity index(ulcerative colitis)and Mayo staging system(Crohn’s disease).The clinicpathological data were analyzed between the two different latent EBV groups and also between the mild-to-moderate and severe disease groups.RESULTS Systolic pressure(P=0.005),variety of disease(P=0.005),the severity of illness(P=0.002),and pre-op corticosteroids(P=0.025)were significantly different between the EBV-negative and EBV-positive groups.Systolic pressure(P=0.001),variety of disease(P=0.000),pre-op corticosteroids(P=0.011)and EBV infection(P=0.003)were significantly different between the mild-to-moderate and severe disease groups.CONCLUSION IBD patients with latent EBV infection may manifest more severe illnesses.It is suggested that the role of EBV in IBD development should be further investigated,latent EBV infection in patients with serious IBD should be closely monitored,and therapeutic course should be optimized.展开更多
[目的]检测EB病毒(EBV)阳性肺癌组织中EBV潜伏感染膜蛋白-1(LMP-1)、p53、Bcl-2及基质金属蛋白酶-9(MMP-9)表达情况,分析它们与肺癌发生发展的关系。[方法]采用原位杂交法检测108例肺癌组织和22例癌旁正常肺组织中EBV编码的小RNA-1(EBV ...[目的]检测EB病毒(EBV)阳性肺癌组织中EBV潜伏感染膜蛋白-1(LMP-1)、p53、Bcl-2及基质金属蛋白酶-9(MMP-9)表达情况,分析它们与肺癌发生发展的关系。[方法]采用原位杂交法检测108例肺癌组织和22例癌旁正常肺组织中EBV编码的小RNA-1(EBV encoded small RNA-1,EBER-1)。免疫组织化学的方法检测EBER-1阳性和阴性肺癌组织中LMP-1、p53、Bcl-2及MMP-9的表达。[结果]108例肺癌组织中EBER-1阳性36例,阳性率33.3%;22例癌旁正常肺组织中EBER-1阳性1例,阳性率4.5%,差异有统计学意义(P<0.01)。EBER-1阳性和阴性的肺癌组织中LMP-1阳性率分别为11.1%和4.2%,差异无统计学意义(P>0.05);在EBER-1阳性肺癌组织中p53、Bcl-2的平均面积(AA)和积分光密度(IOD)均高于阴性组,差异有统计学意义。在EBER-1阳性肺癌组织中MMP-9AA和IOD均高于阴性组,但差异无统计学意义(P>0.05)。[结论]EBV感染可能通过影响LMP-1、Bcl-2、p53和MMP-9在肺癌组织中的表达,进而在肺癌的发生、发展和转移中发挥作用。展开更多
基金Supported by the National Natural Science Foundation of China(No.81260149No.81360152+2 种基金No.81560162)Guangxi Natural Science Foundation(No.2016GXNSFAA380301)Youth Science Foundation of Guangxi Medical University(No.GXMUYSF2014040)
文摘AIM： To investigate the positive rate and types of cells that express Epstein-Barr virus-encoded small RNAs （EBERs） and to determine the distribution of EBER-expressing cells in idiopathic orbital inflammatory pseudotumor （IOIP） tissues. METHODS： We retrospectively examined 40 archived paraffin specimens from two teaching hospitals in Southern China between January 2007 and January 2015 that were pathologically determined to exhibit IOIP. Eleven concurrent paraffin specimens of thyroid-associated ophthalmopathy （TAO） composed the control group. In situ hybridization was performed to detect EBERs. Immunohistochemistry was employed to detect CD3, CD20, Vimentin, and smooth muscle actin （SMA）, and the positive rate, types of positive cells, and distribution and location of EBERs were evaluated. RESULTS： The positive expression rate of EBERs was 47.5% （19/40） in the IOIP group, which was significantly higher than that in the TAO group [0 （0/11）, P=-0.011]. in the IOIP group, the lymphocyte infiltrative subtype, fibrotic subtype, and mixed subtype exhibited EBER-positive rates of 57.1% （12121）, 12.5% （118）, and 54.5% （6/11）, respectively, and no significant differences were found between these subtypes （P=0.085）. Positive signals of EBERs were mainly present in medium-small lymphocytes between or around follicles and in the nuclei of activated immunoblasts （14/19）. CONCLUSION： The positive rate, types, and distribution of EBER-expressing cells in IOIP have been documented.These findings are conducive for a better understanding of the underlying mechanisms of Epstein-Barr virus infection in IOIP pathogenesis.
基金Supported by Clinical and Translational Medicine Research Foundation of Chinese Academy of Medical Sciences,No. 2020-I2M-C&T-B-038Capital Health Research and Development of Special Project,No. 2022-1-2181Group Medical Aid Project of the Tibet Autonomous Region Natural Science Foundation,No. XZ2020ZR-ZY28[Z]
文摘BACKGROUND Emerging studies indicate the critical involvement of microorganisms,such as Epstein-Barr virus(EBV),in the pathogenesis of inflammatory bowel disease(IBD).Immunosuppressive therapies for IBD can reactivate latent EBV,complicating the clinical course of IBD.Moreover,the clinical significance of EBV expression in B lymphocytes derived from IBD patients’intestinal tissues has not been explored in detail.AIM To explore the clinical significance of latent EBV infection in IBD patients.METHODS Latent EBV infection was determined by double staining for EBV encoded RNA and CD20 in colon specimens of 43 IBD patients who underwent bowel resection.Based on the staining results,the patients were divided into two groups,according to their latent EBV infection states-negative(n=33)and positive(n=10).Illness severity of IBD were assigned according to Crohn’s disease activity index(ulcerative colitis)and Mayo staging system(Crohn’s disease).The clinicpathological data were analyzed between the two different latent EBV groups and also between the mild-to-moderate and severe disease groups.RESULTS Systolic pressure(P=0.005),variety of disease(P=0.005),the severity of illness(P=0.002),and pre-op corticosteroids(P=0.025)were significantly different between the EBV-negative and EBV-positive groups.Systolic pressure(P=0.001),variety of disease(P=0.000),pre-op corticosteroids(P=0.011)and EBV infection(P=0.003)were significantly different between the mild-to-moderate and severe disease groups.CONCLUSION IBD patients with latent EBV infection may manifest more severe illnesses.It is suggested that the role of EBV in IBD development should be further investigated,latent EBV infection in patients with serious IBD should be closely monitored,and therapeutic course should be optimized.
文摘[目的]检测EB病毒(EBV)阳性肺癌组织中EBV潜伏感染膜蛋白-1(LMP-1)、p53、Bcl-2及基质金属蛋白酶-9(MMP-9)表达情况,分析它们与肺癌发生发展的关系。[方法]采用原位杂交法检测108例肺癌组织和22例癌旁正常肺组织中EBV编码的小RNA-1(EBV encoded small RNA-1,EBER-1)。免疫组织化学的方法检测EBER-1阳性和阴性肺癌组织中LMP-1、p53、Bcl-2及MMP-9的表达。[结果]108例肺癌组织中EBER-1阳性36例,阳性率33.3%;22例癌旁正常肺组织中EBER-1阳性1例,阳性率4.5%,差异有统计学意义(P<0.01)。EBER-1阳性和阴性的肺癌组织中LMP-1阳性率分别为11.1%和4.2%,差异无统计学意义(P>0.05);在EBER-1阳性肺癌组织中p53、Bcl-2的平均面积(AA)和积分光密度(IOD)均高于阴性组,差异有统计学意义。在EBER-1阳性肺癌组织中MMP-9AA和IOD均高于阴性组,但差异无统计学意义(P>0.05)。[结论]EBV感染可能通过影响LMP-1、Bcl-2、p53和MMP-9在肺癌组织中的表达,进而在肺癌的发生、发展和转移中发挥作用。
