应用免疫组化ABC法,以第八因子相关抗原(factor Ⅷ related antigen,FⅧR:Ag)作为血管特异标记物显示血管,通过光镜和自动图象分析仪定量法,对24例鼻咽癌前病变间质血管作了形态学观察。结果表明:大多数癌前病例具有与癌间质血管类似的...应用免疫组化ABC法,以第八因子相关抗原(factor Ⅷ related antigen,FⅧR:Ag)作为血管特异标记物显示血管,通过光镜和自动图象分析仪定量法,对24例鼻咽癌前病变间质血管作了形态学观察。结果表明:大多数癌前病例具有与癌间质血管类似的异常增生性改变;认为这些异常增生的血管与癌变发生有关。展开更多
The stromal microvasculature in 27 cases of nasophacyngeal precancerous lesions (NPP) were studied for morphological features and parameter quantitation by computerized image analysis system. FVIIIR:Ag was used as a v...The stromal microvasculature in 27 cases of nasophacyngeal precancerous lesions (NPP) were studied for morphological features and parameter quantitation by computerized image analysis system. FVIIIR:Ag was used as a vascular endothelium marker to show the blood vessels by immunohistochemistry. The microscopic and quantitative results show that most cases(79%) had hyperplastic abnormal blood vessels similar to the stromal neovascularization of nasopharyngeal carcinoma (NPC). These findings suggest that angiogenesis may he a prerequisite to cancerous transformation of nasopharyngeal epithelium, and that cases of NPP with neovascularization have a high tendency to cancerous transformation.展开更多
A prospective study was done by the examination of nasopharyngoscope, reaction of EB virus's antigens and antibodies, nasopharyngofibroscope, pathological and EB virus's DNA, EBERs, etc. of about 100000 person...A prospective study was done by the examination of nasopharyngoscope, reaction of EB virus's antigens and antibodies, nasopharyngofibroscope, pathological and EB virus's DNA, EBERs, etc. of about 100000 persons in high risk area of NPC in Guangdong Province, China from 1986 to 1995. If any one of the following four conditions is present in some persons, i.e., (1) EBV VCA/IgA titer>1:80, (2) EBV EDAb>60%, (3) Dual or triple positiveness in VCA/IgA, EA/IgA and EDAb, (4) Any one of VCA/IgA, EA/IgA and EDAb keeps high titer or going up, they should be regarded as in precancerosis of NPC. The moderate or severe heteroplasia and heterometaplasia of nasopharyngeal mucosa are the precancerous lesions of NPC. Some individual who is in precancerosis or with precancerous lesion should be regarded as the high risk population of NPC. The results are of important scientific basis for screening and second degree prevention of NPC.展开更多
Objectives To investigate the prevalence of sinonasal lymphoepithelial carcinoma (SNLEC) in Guangzhou, a high incidence area of nasopharyngeal carcinoma (NPC), and to detect whether it is associated with Epstein-Barr...Objectives To investigate the prevalence of sinonasal lymphoepithelial carcinoma (SNLEC) in Guangzhou, a high incidence area of nasopharyngeal carcinoma (NPC), and to detect whether it is associated with Epstein-Barr virus (EBV) infection.Methods Twenty confirmed SNLEC specimens were collected from all of the sinonasal carcinoma biopsies performed in the 8 years 1989-1996 at the Sun Yat-sen University of Medical Sciences. EBV encoded early RNAs were detected by use of in-situ hybridization. A variety of antigens, including the EBV nuclear antigen 1, latent membrane protein 1, BZLF1 protein, diffuse early antigen, viral capsid antigen and membrane antigen, were detected using immunohistochemistry. Additionally, 36 NPC specimens were used for comparison.Results Twenty SNLECs were identified. Seventeen SNLECs were developed in the nasal cavity, and 3 in the maxillary sinus. The mean age (46.25 y), male to female ratio (3∶1), histopathology and lymphoinfiltration of the 20 SNLECs were identical with those of the 36 NPCs. Thirteen (65.0%) of the 20 SNLECs showed an expansive growth pattern, while 27 (75.0%) of the 36 NPCs showed an infiltrating or mixed growth pattern. The majority of cancer cells in all of the 20 SNLECs showed EBV encoded early RNAs. The EBV nuclear antigen 1 expression of SNLEC was less intensive than that of NPC. The expression rate of latent membrane protein 1 for SNLEC (3/20,15%) was lower than that for NPC (19/36, 52.8%). The expression rates of BZLF1 protein (2/20, 10.0%), diffuse early antigen (19/20, 95.0%), viral capsid antigen (15/20, 75.0%), and membrane antigen (13/20, 65.0%) for SNLEC were higher than those (0/36, 0.0%; 31/36, 86.0%; 18/36, 50%; and 14/36, 38.9%) for NPC. Conclusions SNLEC is not uncommon in Guangzhou. This tumour is also consistently associated with EBV infection like NPC. As compared to NPC, the EBV harbored in SNLECs seems to express the EBV nuclear antigen 1 weakly and has a lower expression rate of latent membrane protein 1 as well as higher expression rates of EBV lytic products.展开更多
文摘应用免疫组化ABC法,以第八因子相关抗原(factor Ⅷ related antigen,FⅧR:Ag)作为血管特异标记物显示血管,通过光镜和自动图象分析仪定量法,对24例鼻咽癌前病变间质血管作了形态学观察。结果表明:大多数癌前病例具有与癌间质血管类似的异常增生性改变;认为这些异常增生的血管与癌变发生有关。
文摘The stromal microvasculature in 27 cases of nasophacyngeal precancerous lesions (NPP) were studied for morphological features and parameter quantitation by computerized image analysis system. FVIIIR:Ag was used as a vascular endothelium marker to show the blood vessels by immunohistochemistry. The microscopic and quantitative results show that most cases(79%) had hyperplastic abnormal blood vessels similar to the stromal neovascularization of nasopharyngeal carcinoma (NPC). These findings suggest that angiogenesis may he a prerequisite to cancerous transformation of nasopharyngeal epithelium, and that cases of NPP with neovascularization have a high tendency to cancerous transformation.
文摘A prospective study was done by the examination of nasopharyngoscope, reaction of EB virus's antigens and antibodies, nasopharyngofibroscope, pathological and EB virus's DNA, EBERs, etc. of about 100000 persons in high risk area of NPC in Guangdong Province, China from 1986 to 1995. If any one of the following four conditions is present in some persons, i.e., (1) EBV VCA/IgA titer>1:80, (2) EBV EDAb>60%, (3) Dual or triple positiveness in VCA/IgA, EA/IgA and EDAb, (4) Any one of VCA/IgA, EA/IgA and EDAb keeps high titer or going up, they should be regarded as in precancerosis of NPC. The moderate or severe heteroplasia and heterometaplasia of nasopharyngeal mucosa are the precancerous lesions of NPC. Some individual who is in precancerosis or with precancerous lesion should be regarded as the high risk population of NPC. The results are of important scientific basis for screening and second degree prevention of NPC.
基金agrantfromtheNationalNaturalScienceFoundationofChina! (No 3 973 0 2 0 0 Ⅱ )
文摘Objectives To investigate the prevalence of sinonasal lymphoepithelial carcinoma (SNLEC) in Guangzhou, a high incidence area of nasopharyngeal carcinoma (NPC), and to detect whether it is associated with Epstein-Barr virus (EBV) infection.Methods Twenty confirmed SNLEC specimens were collected from all of the sinonasal carcinoma biopsies performed in the 8 years 1989-1996 at the Sun Yat-sen University of Medical Sciences. EBV encoded early RNAs were detected by use of in-situ hybridization. A variety of antigens, including the EBV nuclear antigen 1, latent membrane protein 1, BZLF1 protein, diffuse early antigen, viral capsid antigen and membrane antigen, were detected using immunohistochemistry. Additionally, 36 NPC specimens were used for comparison.Results Twenty SNLECs were identified. Seventeen SNLECs were developed in the nasal cavity, and 3 in the maxillary sinus. The mean age (46.25 y), male to female ratio (3∶1), histopathology and lymphoinfiltration of the 20 SNLECs were identical with those of the 36 NPCs. Thirteen (65.0%) of the 20 SNLECs showed an expansive growth pattern, while 27 (75.0%) of the 36 NPCs showed an infiltrating or mixed growth pattern. The majority of cancer cells in all of the 20 SNLECs showed EBV encoded early RNAs. The EBV nuclear antigen 1 expression of SNLEC was less intensive than that of NPC. The expression rate of latent membrane protein 1 for SNLEC (3/20,15%) was lower than that for NPC (19/36, 52.8%). The expression rates of BZLF1 protein (2/20, 10.0%), diffuse early antigen (19/20, 95.0%), viral capsid antigen (15/20, 75.0%), and membrane antigen (13/20, 65.0%) for SNLEC were higher than those (0/36, 0.0%; 31/36, 86.0%; 18/36, 50%; and 14/36, 38.9%) for NPC. Conclusions SNLEC is not uncommon in Guangzhou. This tumour is also consistently associated with EBV infection like NPC. As compared to NPC, the EBV harbored in SNLECs seems to express the EBV nuclear antigen 1 weakly and has a lower expression rate of latent membrane protein 1 as well as higher expression rates of EBV lytic products.
