转化生长因子α及其受体在鼻息肉中的表达

目的：研究转化生长因子α（ＴＧＦα）及其受体表皮生长因子受体（ＥＧＦＲ）在鼻息肉组织中的表达情况及与增殖细胞核抗原（ＰＣＮＡ）表达的关系。方法：应用免疫组织化学技术检测２０例鼻息肉组织中ＴＧＦα、ＥＧＦＲ和ＰＣＮＡ的表达及分布民政部结果：鼻息肉组织中上皮细胞、腺上皮细胞及炎性细胞ＴＧＦα、ＥＧＦＲ和ＰＣＮＡ高表达,且上皮细胞、腺上皮细胞ＴＧＦα、ＥＧＦＲ的表达与ＰＣＮＡ的表达呈显著正相关。结论：Ｔ     

血管内皮生长因子及其受体对喉癌细胞生长的影响

为探讨血管内皮生长因子（ＶＥＧＦ）在喉癌中的作用及可能的作用方式，用抗ＶＥＧＦ抗体及其受体ｆｌｔ抗体通过微波处理暴露抗原后，进行标准化的ＥｌｉｔｅＡＢＣ染色；将不同浓度的抗ＶＥＧＦ及抗ｆｌｔ抗体分别加入ＨＥＰ－２细胞的培养液中，培养５ｄ后测ＨＥＰ－２细胞的活性（ＭＴＴ法）。结果：免疫组化染色显示ＶＥＧＦ及其受体ｆｌｔ主要在喉癌细胞和血管内皮细胞表达；不同浓度的ＶＥＧＦ抗体及抗ｆｌｔ抗体对ＨＥＰ－２     

鼻咽癌血管生成及血小板聚集功能与侵袭转移关系的研究

目的：探讨鼻咽癌（ＮＰＣ） 血管生成及血小板聚集功能与ＮＰＣ 侵袭转移关系,为在分子水平干预肿瘤血管形成,预防ＮＰＣ复发和转移打下基础。方法：采用免疫组织化学Ｓ－ Ｐ法检测了５６ 例ＮＰＣ,２０ 例无瘤鼻咽部石蜡标本组织中的微血管密度（ ＭＶＤ） 及血管内皮细胞生长因子（ＶＥＧＦ） 表达。随访３ 年,ＮＰＣ复发转移１７ 例,无复发或转移３９ 例。结果：复发转移组的血小板聚集率ＭＡＲ,ＭＶＤ 及ＶＥＧＦ的表达较无复发转移的表达高,差异有统计学意义;ＭＶＤ 及ＶＥＧＦ的表达与临床分期相关。结论：ＮＰＣ 血管生成及血小板聚集功能亢进与癌浸润和转移行为密切相关,有可能作为判断肿瘤生物学行为及预后指标,对采用血管生成抑制剂及血小板聚集抑制剂防止ＮＰＣ转移有参考价值。     

鼻咽癌中转化生长因子β受体及受体相关蛋白—1的原位表达

目的 研究转化生长因子β（ＴＧＦβ）、其受体及受体相关蛋白－１（ＴＲＩＰ－１）在鼻咽低分化鳞癌中的表达状况。方法 采用免疫组化技术及原位分子杂交技术，检测同一例标本中癌旁上皮和癌细胞内的３型ＴＧＦβ，２种受体的蛋白水平和ＴＲＩＰ－１ｍＲＮＡ水平，分析其变化规律。结果 ＴＧＦβ１、ＴＧＦβ２、ＴＧＦβ３、ＴＧＦβＲＩ、ＴＧＦβⅡ在癌旁上皮表达强于癌组织的百分数分别为６５．７９％、６６．６７％、５５．     

头颈鳞癌细胞转化生长因子-β受体表达降低

转化生长因子－β（ＴＧＦ－β）对表达其受体的正常及肿瘤细胞有抗增殖作用，推测ＴＧＦ－β和／或其受体表达降低将导致头颈鳞癌细胞生长失控，该作者对ＴＧＦ－β亚型及其受体亚型在头颈鳞癌中的表达情况进行了研究。应用免疫组织化学方法研究了头颈鳞癌细胞转化生长因子-β及其受体的表达情况，发现７个正常无肿瘤的对照标本均表达ＴＧＦ－β及其受体［（ＴＧＦ－β（ＲＩ）和ＴＧＦ－β（ＲⅡ）］，而４７个头颈鳞癌标本基质表达ＴＧＦ－β，但肿瘤细胞本身不表达ＴＧＦ－β，４０个肿瘤标本不表达ＴＧＦ－β（ＲＩ），４３个肿瘤标本…     

鼻咽癌中转化生长因子β受体及受体相关蛋白-1的原位表达

目的　研究转化生长因子β（ｔｒａｎｓｆｏｒｍｉｎｇ ｇｒｏｗｔｈｆａｃｔｏｒβ，ＴＧＦβ） 、其受体及受体相关蛋白１（ＴＧＦβｒｅｃｅｐｔｏｒｉｎｔｅｒａｃｔｉｎｇ ｐｒｏｔｅｉｎ１，ＴＲＩＰ１） 在鼻咽低分化鳞癌中的表达状况。方法　采用免疫组化技术及原位分子杂交技术，检测同一例标本中癌旁上皮和癌细胞内的３ 型ＴＧＦβ，２ 种受体的蛋白水平和ＴＲＩＰ１ ｍＲＮＡ水平，分析其变化规律。结果　ＴＧＦβ１、ＴＧＦβ２、ＴＧＦβ３、ＴＧＦβＲＩ、ＴＧＦβＲＩＩ在癌旁上皮表达强于癌组织的百分数分别为６５．７９％ 、６６．６７ ％ 、５５．２６％ 、４８．５７％ 、６３．１６ ％ 。癌旁上皮阳性率都高于癌组织阳性率（ Ｐ＜０．０１） ，癌细胞ＴＲＩＰ１ｍＲＮＡ表达平均灰度值１９．３２±１０．７０ ，癌旁上皮平均灰度值为１１．９６ ±５．８５（ Ｐ＜ ０．０５）。结论　鼻咽低分化鳞癌中ＴＧＦβ信息传递通路中的配体、受体和受体相关蛋白１ 表达减弱。     

鼻咽泡状核细胞癌和低分化鳞癌的临床生物学行为的对比研究

目的：探讨鼻咽泡状核细胞癌（ＶＮＣＣ）和低分化鳞癌（ＰＤＳＣＣ）的临床生物学行为的差异性。方法：用原位杂交和免疫组化染色（ＳＰ法）技术,检测ＶＮＣＣ和ＰＤＳＣＣ癌组织中ＣｅｒｂＢ２、表皮生长因子受体（ＥＧＦＲ）和增殖细胞核抗原（ＰＣＮＡ）表达,用原位末端标记（ＩＳＬＥ）方法检测癌细胞凋亡,并对其预后和临床特征进行对比分析。结果：①ＶＮＣＣ的ＩＳＥＬ和ＰＣＮＡ染色强度指数（ＳＩ）明显高于ＰＤＳＣＣ;②ＶＮＣＣ的ＣｅｒｂＢ２、ＥＧＦＲｍＲＮＡ和ＣｅｒｂＢ２蛋白表达与ＰＤＳＣＣ无明显差别;③ＶＮＣＣ的５年生存率比ＰＤＳＣＣ高。结论：与ＰＤＳＣＣ比较,ＶＮＣＣ是一种生长增殖活跃、分化程度更低,但有较好预后趋向的一种癌型。     

血管性耳鸣与心电图经谱相关分析及其临床应用价值

采用快速傅里叶变换（ｆａｓｔ ｆｏｕｒｉｅｒ ｔｒａｎｓｆｏｒｍ，ＦＦＴ）技术，对血管性耳鸣（ｖａｓｃｕｌａｒ ｔｉｎｎｉｔｕｓ，ＶＴ）与心电图（ｅｌｅｃｔｒｏｃａｒｄｉｏｇｒａｍ，ＥＣＧ）同步监测的信息进行相关性分析及临床应用价值的研究。结果显示：ＶＴ与ＥＣＧ的波形及功率谱特征相似，统计学相关性检验证实二者为极显著相关关系（Ｐ〈０．００１）。ＶＴ组和Ｎ－ＶＴ组与ＥＣＧ频说参量间的相关性研究表明，     

喉鳞状细胞表皮生长因子受体mRNA的表达及其意义

目的：了解喉部鳞状细胞表皮生长因子受体（ＥＧＦ－Ｒ）ｍＲＮＡ的表达情况及其与喉部鳞癌的特征，组织分化的关系。方法；用斑点杂交法检测２０例喉鳞状细胞癌活体标本。结果：１５例出现ＥＧＦ－Ｒ ｍＲＮＡ表达，其表达率为７５Ａ％。ＥＧＦ－Ｒ ｍＲＮＡ表达与患者年龄，肿瘤的部位无关；而与ＴＮＭ分期，组织分化程度有关，Ｔ３，Ｔ４期的表达高于Ｔ１，Ｔ２期；分化程度低的肿瘤，其ＥＧＦ－Ｒ ｍＲＮＡ表达高于分化程度中     

喉癌微血管生成中P53nm23蛋白和血管内皮生长因 …

目的 探讨Ｐ５３、ｎｍ２３蛋白和血管内皮生长因子（ｖａｓｃｕｌａｒ ｅｎｄｏｔｈｅｌｉａｌ ｇｒｏｗｔｈ ｆａｃｏｒ,ＶＥＧＦ）在喉癌微血管生成及转移中的作用。方法 通过免疫组化ＳＰ法对４２例喉癌标本中Ｐ５３、ｎｍ２３蛋白、ＶＥＧＦ及微血管密度（ｍｉｃｒｏｖｅｓｓｅｌ ｄｅｎｓｉｔｙ,ＭＶＤ）进行了检测。结果 喉癌中Ｐ５３、ｎｍ２３蛋白及ＶＥＧＦ的阳性表达率分别占４７．６％、５７１％和７１．４％。     

VEGF及其受体的表达对鼻内翻性乳头状瘤恶变倾向预测的意义

目的:探讨血管内皮生长因子(VEGF)及其胎肝激酶受体(flk-1)在鼻内翻性乳头状瘤(NIP)恶变前不同阶段中的表达情况。方法:应用免疫组织化学LSAB法检测NIP、非典型增生的不同阶段及恶变组织中VEGF及其受体flk-1的表达情况。应用图像分析仪对染色结果进行定量分析。结果:VEGF、flk-1阳性染色随着不典型增生程度的加重,其在上皮组织和间质结缔组织中的表达强度和范围也增加。轻度不典型增生与NIP比较,中-重度不典型增生与轻度不典型增生比较,VEGF、flk-1表达差异均有统计学意义(均P<0.01)。中-重度不典型增生组织的表达强度与鳞状细胞癌组织接近。结论:VEGF参与了NIP的病理过程,VEGF及其受体flk-1的表达随肿瘤异型程度的增加其表达强度增加,其表达水平可以作为衡量NIP恶变倾向的指标之一。     

血管通透性因子在鼻息肉中的表达及意义

目的 探讨血管通透性因子（ｖａｓｃｕｌａｒ ｐｅｒｍｅａｂｉｌｉｔｙ ｆａｃｔｏｒ，ＶＰＦ）在鼻息肉组织中的表达及意义。方法 将９例鼻息肉标本及８例下鼻甲粘膜标本行ＶＰＦ及其受体ｆｌｋ－１的免疫组化染色，光镜观查。结果 ＶＰＦ在鼻息肉组织的血管内皮细胞和腺体细胞的表达明显高于下鼻甲组织（Ｐ〈０．０１，Ｐ〈０．０５），ｆｌｋ－１在血管内皮细胞的表达明显高于下鼻甲组织（Ｐ〈０．０１）。结论 ＶＰＦ对鼻     

鼻内翻性乳头状瘤中表皮生长因子及受体的表达与恶变的关系

目的探讨表皮生长因子(EGF)及其受体(EGFR)在鼻内翻性乳头状瘤(NIP)恶变前不同阶段中的表达情况及其生物学意义.方法应用免疫组织化学LSAB法检测NIP非典型增生的不同阶段及恶变组织中EGF、EGFR的表达情况.应用图像分析仪对染色结果进行定量分析.结果在上皮组织和间质结缔组织中EGF、EGFR阳性染色随着不典型增生程度的加重,其表达强度和范围也增加.中-重度不典型增生组织的表达强度与鳞状细胞癌组织接近.轻度不典型增生与NIP比较,中-重度不典型增生与轻度比较,EGF、EGFR表达差异均有统计学意义(均P<0.01).结论EGF参与了NIP的病理过程,EGF、EGFR的表达随肿瘤异型程度的增加而强度增加,其表达水平可以作为衡量NIP恶变倾向的指标之一.     

Expression of vascular endothelial growth factor and transforming growth factor-beta 1 in nasal polyps]

OBJECTIVE: To study the expression and significance of vascular endothelial growth factor/vascular permeability factor (VEGF/VPF) and transforming growth factor-beta 1(TGF-beta 1) in nasal polyps. METHODS: Expression of VEGF/VPF and TGF-beta 1 in nasal polyps from 34 patients and middle turbinates from 30 patients with deviation of nasal septum was prospectively studied with immunohistochemistry. Tissue sections were observed under optical microscope. RESULTS: (1) The VEGF/VPF positivity in vascular endothelium and in glandular cell was significantly higher in nasal polyps than in middle turbinates (P < 0.01 and P < 0.05, respectively); (2) The TGF-beta 1 positivity in extracellular matrix and in cells in the stroma was significantly higher in nasal polyps than in middle turbinates(P < 0.005); (3) The distribution and shape of TGF-beta 1 expressing cells in nasal polyps were similar to that of eosinophil, their positivities were significantly correlative; (4) The positivity of VEGF/VPF and TGF-beta 1 did not correlate with clinical type in nasal polyps (P > 0.05). CONCLUSION: (1) The VEGF/VPF may play a key role in the formation of heavy edema of nasal polyps; (2) The TGF-beta 1 may contribute to some of the pathologic changes observed in nasal polyps, such as thickening of the epithelial basement membrane and stromal fibrosis; (3) Eosinophils in nasal polyps represent a major source of TGF-beta 1.     

血管通透性因子在鼻息肉中的表达及意义

目的探讨血管通透性因子（ｖａｓｃｕｌａｒｐｅｒｍｅａｂｉｌｉｔｙｆａｃｔｏｒ，ＶＰＦ）在鼻息肉组织中的表达及意义。方法将９例鼻息肉标本及８例下鼻甲粘膜标本行ＶＰＦ及其受体ｆｌｋ１的免疫组化染色，光镜观查。结果ＶＰＦ在鼻息肉组织的血管内皮细胞和腺体细胞的表达明显高于下鼻甲组织（Ｐ＜０．０１，Ｐ＜０．０５），ｆｌｋ１在血管内皮细胞的表达明显高于下鼻甲组织（Ｐ＜０．０１）。结论ＶＰＦ对鼻息肉发生过程中组织极度水肿的产生可能有非常重要的作用。     

MUC5AC在人类鼻息肉及下鼻甲黏膜上皮的表达

目的 :探讨MUC5AC与鼻息肉及慢性肥厚性鼻炎黏液过量分泌的关系。方法 :免疫组织化学ABC法检测 2 7例鼻息肉、19例慢性肥厚性鼻炎下鼻甲及 9例正常下鼻甲黏膜上皮MUC5AC的表达。结果 :鼻息肉黏膜上皮及慢性肥厚性鼻炎下鼻甲黏膜上皮MUC5AC阳性细胞表达率明显高于正常下鼻甲黏膜上皮 (P <0 .0 5 ) ,且MUC5AC阳性表达细胞主要为杯状细胞。结论 :MUC5AC在鼻息肉及慢性肥厚性鼻炎下鼻甲黏膜上皮呈高表达 ,且阳性细胞为杯状细胞 ,表明MUC5AC确实对鼻息肉及慢性肥厚性鼻炎的黏液过量分泌起了一定作用。     

Expression patterns of galectin-1 and galectin-3 in nasal polyps and middle and inferior turbinates in relation to growth regulation and immunosuppression

BACKGROUND: The term nasal polyposis describes benign growth processes in the nasal and sinus mucosa, which are mainly located in the middle meatus and never in the inferior meatus. As a step to define the biochemical determinants relevant for growth regulation, we focused on endogenous lectins known for anti-apoptotic (galectin-3) and immunomodulatory (galectin-1) activities. DESIGN: Using computer-assisted microscopy, we performed an immunohistochemical investigation defining the quantitative parameters of expression of galectin-1 and galectin-3 in 10 nasal polyps, 10 middle turbinates, and 10 inferior turbinates, all of which were obtained from surgical resection. RESULTS: Our data show that galectin-3 expression is markedly (P<.001) higher in nasal polyps than in turbinates. No relation to the allergic status was discovered. Galectin-1 expression is higher in nasal polyps than in middle turbinates (P<.001) in nonallergic patients compared with allergic ones (in glandular epithelium, P =.009; in connective tissue, P =.006). The lowest galectin-1 expression was observed in the middle turbinate. CONCLUSIONS: These data are in line with a positive influence of galectin-3 on growth and an immunoregulatory role of galectin-1, mimicking an increased expression dependent on glucocorticoid.     

E-选择素在鼻息肉中的分泌与表达

目的:检测黏附分子E选择素在鼻息肉中的分泌水平与表达部位,借以探讨其与鼻息肉可能的病理机制的相关性。方法:采用酶联免疫吸附测定法检测25例鼻息肉(鼻息肉组)组织匀浆中E选择素水平,以9例鼻中隔手术患者之代偿肥大的下鼻甲后端黏膜作为对照(对照组);同时对上述标本进行苏木精伊红染色及E选择素免疫组织化学染色,观察其表达情况。结果:鼻息肉组大量嗜酸粒细胞浸润。E选择素浓度为(42.58±13.52)μg/L,对照组为(11.35±3.17)μg/L,差异有统计学意义(P<0.01)。E选择素主要表达于血管内皮、腺体上皮、间质和浸润炎症细胞上。鼻息肉组腺体上皮阳性表达率为92.0%,对照组为55.6%,差异有统计学意义(P<0.05)。鼻息肉组在血管内皮上阳性表达率为84.0%,对照组为44.4%;鼻息肉组在间质及浸润炎症细胞阳性表达率为92.0%,对照组为33.3%,差异均有统计学意义。Spearman相关性分析E选择素在血管内皮上的表达和在间质及浸润炎症细胞上的表达呈正相关(r=0.544,P<0.01)。结论:高表达的E选择素可能通过参与嗜酸粒细胞等炎症细胞的浸润、活化、增殖,从而在鼻息肉的形成过程中起重要作用。     

两种细胞外基质糖蛋白在鼻息肉中的表达

OBJECTIVE: To explore the role of tenascin (TN) and fibronectin (FN) in the pathophysiology of nasal polyp. METHODS: The expression of TN and FN in nasal polyps from 34 patients and in inferior turbinates from 20 patients with deviation of nasal septum was studied with immunohistochemical method. In patients with nasal polyps, the relations between expression and histopathologic characteristics, eosinophilias (EOS) infiltration, clinical staging and the size of nasal polyps were analyzed. RESULTS: (1) The gray score of TN and FN expression was 163.10 +/- 10.54 and 163.24 +/- 11.52 in nasal polyps respectively, whereas it was 175.49 +/- 9.29 and 173.93 +/- 7.92 in inferior turbinates respectively. The difference between two groups was significant(P < 0.01); (2) The expression of TN and FN in edematous type was significantly stronger than that in cystic fibrous and glandular type (P < 0.05); (3) The association between FN expression and EOS infiltration was significant(r = -0.60, P < 0.01); (4) The expression of TN and FN did not correlate with clinical staging and size(P > 0.05). CONCLUSION: Abnormal ECM may contribute to proliferation of epithelium, accumulation of EOS and edema formation, as a result, to enhance the development of nasal polyps.     

Effect of proinflammatory cytokines on human leucocyte antigen expression of epithelial cells of nasal polyps]

OBJECTIVE: To explore the effect of proinflammatory cytokines on the expression of human leucocyte antigen(HLA-DR) in epithelial cell of nasal polyps. METHODS: The samples were from 23 patients with nasal polyps and 11 cases of normal inferior turbinates. The samples were fixed, paraffin-embeded and sectioned for observing distribution of HLA-DR positive cells. Nasal epithelial cells were obtained after enzymatic digestion and cell culture was performed for observing influences of interleukin (IL)-1 beta and tumor necrosis factor (TNF-alpha) to expression of HLA-DR of epithelial cells and the effect of dexamethasone(10(-5) mol/L). RESULTS: The HLA-DR expression in epithelium was significantly stronger in nasal polyps than that in inferior turbinates. The expression of HLA-DR in cultured cells under stimulation of proinflammatory cytokines was increased compared with controls, but the expression was more intense in nasal polyps than that in inferior turbinates. Increased HLA-DR expression under stimulation of cytokines was reduced significantly by dexamethasone. CONCLUSION: The epithelium is in a key position to participate in inflammatory and immunologic events in the airways. Epithelial cells potentially contribute to airway inflammation by antigen presentation and the production of proinflammatory cytokines.