口腔粘膜鳞状细胞癌基底膜蛋白的免疫组化研究 ——Ⅳ型胶原和LN的表达异常

目的：了解层粘连蛋白（ＬＮ）和Ⅳ型胶原在口腔粘膜鳞状细胞癌中的表达情况。方法：采用免疫组化之ＳＰＴＭ法对３０例口腔鳞状细胞癌,１０例正常口腔粘膜染色。结果：正常口腔粘膜基底膜ＬＮ和Ⅳ型胶原染色密度高,呈连续线状。鳞状细胞癌ＬＮ和Ⅳ胶原的染色密度。基底膜的连续性与肿瘤的分化程度呈负相关。结论：ＬＮ和Ⅳ型胶原的表达异常与肿瘤分化、浸润和转移有密切关系,可作为判断肿瘤预后的一项指标     

舌癌基底膜Ⅳ型胶原表达研究

目的：观察舌鳞状细胞癌基底膜的Ⅳ型胶原表达及超微结构改变。方法 ４６例舌癌标本采用免疫组化方法染色观察Ⅳ型胶原的表达,其中３例标本采用透射电镜观察。结果 在肿瘤周围的正常粘膜内,Ⅳ型胶原阳性表达且呈连续的线状分布。在癌组织中,分化差及伴有淋巴结转移的病例,Ⅳ型胶原表达弱甚至无表达,但在某些分化较好的部位,可发现其表达增强。超微结构观察结果显示：在胶原纤维完整,上皮下结缔组织内成纤维细胞丰富,功能活     

口腔粘膜白斑、鳞癌基底膜蛋白的表达异常

目的了解基底膜蛋白（层粘连蛋白、纤维连接蛋白，Ⅳ型胶原）在口腔粘膜白斑，鳞状细胞癌中的表达情况。方法采用免疫组化之SP_TM法，对20例口腔粘膜白斑，20例口腔鳞状细胞癌和10例正常口腔粘膜进行染色。结果正常口腔粘膜、单纯增生性白斑LN和Ⅳ型胶原基底膜染色密度高，呈连续线状；FN基底膜染色密度低，亦呈连续线状。LN和Ⅳ型胶原的染色密度和基底膜的连续性与白斑的异常增生程度及鳞癌的分化程度（由高分化至低分化）呈负相关。异常增生性白斑、高分化鳞状细胞癌可见FN的表达增强，而低分化鳞状细胞癌基底膜染色密度未见增高，浸润性癌基底膜破坏或缺失。结论基底膜蛋白可能作为早期诊断癌前病变的一种生物学指标。     

牙周炎基础治疗前后层粘连蛋白在鼠牙龈组织中的表达

目的:观察鼠牙周炎基础治疗前后牙龈组织中层粘连蛋白(LN)的表达.方法:丝线结扎高糖软食法建立鼠牙周炎模型.去除结扎丝线停止高糖软食,局部洁刮治术,建立鼠牙周炎基础治疗模型.免疫组化法显示LN在牙龈组织中的表达.结果:LN连续线形表达于健康牙龈上皮和血管内皮下基底膜(BM);偶见周围基质LN阳性表达牙龈成纤维细胞(GFs),位于上皮钉突MB附近.LN不连续点线形表达于牙周炎牙龈上皮和血管内皮下BM,表达强度与炎症性质和迁延时间有关;周围基质LN阳性表达GFs增多,位于上皮钉突和结合上皮(JE)根端BM附近.LN连续线形表达于基础治疗后牙龈上皮和血管内皮下BM,表达强度上调;周围基质LN阳性表达GFs减少,位于上皮钉突BM附近.结论:炎症改变牙龈BM内LN表达方式和强度,刺激上皮BM附近GFs分泌LN;牙周基础治疗恢复LN在牙龈组织内的分布,强度上调.GFs源性LN可能参与牙龈上皮细胞的增殖和JE根向迁移,上皮源性LN可能影响.BM的构建和稳定.     

年龄对NK细胞在牙周炎龈组织中分布影响的免疫组化研究

目的：观察老年牙周炎牙龈组织中自然杀伤（NK）细胞的分布。方法：采用免疫组织化学方法对15例老年牙周炎患者10例慢性成人牙周炎患者牙龈组织中NK细胞、T淋巴细胞和B淋巴细胞的分布及阳性计数进行比较研究。结果：慢性成人牙周炎组NK阳性细胞计数明显高于老年牙周炎组（P＜0.01),慢性成人牙周炎组NK阳性细胞表达率也高于老年牙周炎组。结论：由于年龄增加的影响,老年牙周炎患者局部牙龈组织中出向免疫调节功能的紊乱,NK细胞功能降低。     

成人慢性牙周炎龈上皮中郎格罕氏细胞的观察

本文用 S-100蛋白和溶菌酶抗体的免疫过氧化物酶技术,对10例正常人和20例成人慢性牙周炎龈上皮中郎格罕氏细胞进行鉴定和计数观察。结果表明:牙周炎时龈上皮中郎格罕氏细胞的数目明显高于正常龈上皮(P<0.01),且随炎症细胞浸润程度的加重和菌斑指数记分值的升高而增多,呈显著正相关(P<0.05)。     

慢性成人牙周炎治疗失败与龈下菌斑产黑色素类杆菌群关系

已有研究证实牙周炎与龈下菌斑中的厌氧菌有极其密切的关系,其中产黑色素类杆菌群（ｂｌａｃｋｐｉｇｍｅｎｔｅｄｂａｃｔｅｒｏｉｄｅｓｇｒｏｕｐｓ,ＢＰＢ）被认为是慢性成人牙周炎最重要的可疑致病菌,它与该病的发生、发展、转归有关。本文利用危险度分析方法探讨...     

老年人牙周炎龈组织内T和B淋巴细胞免疫组织化学研究

目的：观察老年人牙周炎龈组织Ｔ和Ｂ淋巴细胞免疫组织化学变化。方法：对１５例老年牙周炎患者龈组织进行常规组织病理学检查，同时采用ＡＢＣ法对ＩｇＡ、ＩｇＧ、ＩｇＭ、λ、κ、ＣＤ４和ＣＤ８阳性细胞进行免疫组织化学染色观察，计算ＣＤ４：ＣＤ８的比值。结果：ＩｇＭ阳性细胞阳性率明显高于ＩｇＡ阳性细胞阳性率（Ｐ＜０．０５），ＣＤ４：ＣＤ８的比值降低。结论：老年人牙周炎龈组织免疫功能可能降低，其组织病理形态学和免疫组织化学表现有与其它类型牙周炎不同的特点     

β-防御素2在实验性大鼠牙周炎口腔龈上皮、颊黏膜上皮及腮腺导管上皮的表达

目的:探讨β-防御素2在大鼠牙周炎模型口腔龈上皮、颊黏膜上皮和腮腺导管上皮的表达变化及与牙周炎发展的关系。方法:利用结扎法建立大鼠上颌第一磨牙牙周炎模型并设对照组,于第6周取实验牙及牙周组织、相对颊黏膜和腮腺组织,制备组织切片,免疫组化染色法检测防御素2在口腔龈上皮、颊黏膜上皮、腮腺导管上皮的表达并行免疫组化评分和统计学分析。结果:β-防御素2主要表达于口腔龈上皮和颊黏膜上皮的棘层和颗粒层以及腮腺的导管上皮细胞。在口腔龈上皮的表达为牙周炎组显著低于对照组(P<0.01),在颊黏膜上皮的表达为牙周炎组显著高于对照组(P<0.01),而在腮腺导管上皮的表达牙周炎组和对照组无显著差异。结论:牙周炎症时β-防御素2在口腔龈上皮、颊黏膜上皮和腮腺导管上皮的分布各有不同的变化,提示在牙周炎进展过程中不同部位口腔上皮对牙周化学屏障改变的影响不同。     

成人牙周炎患者全唾液蛋白质凝胶电泳分析

目的　筛选与成人牙周炎(AP)相关的唾液蛋白因子。方法　分为AP组和正常对照(NC组)两组,每组25例,收集非刺激性全唾液,采用十二烷基磺酸钠聚丙烯酰胺凝胶电泳(SDS-PAGE)法分离唾液蛋白并分析其成分。AP组牙周基础治疗后2周、4周重复采样与分析。结果　AP组治疗前唾液中66 kD、18 kD、15 kD、13 kD蛋白条带容量值,51 kD、34 kD、19 kD、17 kD蛋白条带出现率都显著高于NC组;牙周基础治疗后以上各变量都显著下降。结论　18 kD、15 kD、13 kD与AP的发生与转归有关;牙周炎症状态下唾液中血清性蛋白增加。     

基膜蛋白在腺样囊性癌中表达的免疫组化研究

目的：研究基膜蛋白在涎腺腺样囊性癌中的表达特征,并探讨其与ＡＣＣ细胞分化程度及预后的关系。方法;选取经病理证实为ＡＣＣ的１０１例病例,进行临床病理资料分析及随访。然后选取其中３０例进行基膜蛋白的免疫组织化学标记。结果：（１）ＡＣＣ实体型及含有该成分的混合型ＡＣＣ患者预后较差,发生转移或（和）复发的比例较高,且ＡＣＣ局部复发比远处转移更为多见。（２）ＡＣＣ基膜的存在部位及阳性表达程度与其类型有关,阳     

Immunohistochemical localization of type IV collagen and laminin (α1) in denture stomatitis

Chronic clinical irritation of the palatal mucosa by dentures involves a series of histological changes in epithelial and connective tissues, inflammatory cells and the vasculature. No single change is pathognomic of this inflammatory process. The rupture of basement membrane associated with the development of denture stomatitis often marks an important stage. This study investigated modifications in basement membrane organisation, especially the distribution of type IV collagen and a specific laminin chain (alpha1), during denture stomatitis. Biopsies of palatal mucosa were obtained from 12 patients (8 with denture stomatitis and 4 with clinically healthy mucosa) who had worn removable dentures for more than 3 years. Immunohistochemical studies performed with specific antibodies to type IV collagen and a laminin (alpha1) revealed strong expression in the basement membrane of healthy palatal mucosa. In denture stomatitis, some discontinuities or disruptions in basement membrane were observed at the interface between connective tissue and epithelial cells. These findings suggest a relationship between the expression of laminin (alpha1) and type IV collagen and the development of denture stomatitis, a disorder involving modification of soft tissues in which initial inflammation of the palatal mucosa results from stress under the denture. These changes in basement membrane can be detected by histological studies.     

替硝唑棒局部应用治疗牙周炎的细菌学研究

目的 :探讨局部应用替硝唑棒对牙周炎病原菌的抗菌作用。方法 :选择 41例牙周炎患者 ,局部应用替硝唑棒和甲硝唑棒前后采集龈下细菌并分离、培养 ,测定产黑色素厌氧杆菌、梭杆菌、优杆菌等牙周病原菌的检出变化。结果 :替硝唑棒对产黑色素厌氧杆菌、梭杆菌和普氏菌的清除率均高于甲硝唑棒。替硝唑棒和甲硝唑棒使用前后 ,龈下优势牙周病原菌的检出量均有显著性差异 ,但替硝唑棒的抗菌效果优于甲硝唑棒。结论 :局部应用替硝唑棒对牙周病原菌有明显的抗菌作用。     

The role of Candida in inflammatory papillary hyperplasia of the palate

The objective of this study was to investigate the expression by immunohistochemistry of the major basement membrane (BM) components (laminin, collagen type IV, fibronectin) in specimens from the palatal mucosa lesions of patients with complete dentures and diagnosis of inflammatory papillary hyperplasia of the palate (IPHP). Furthermore to evaluate the potential role of candidal infection in patients with IPHP. Biopsies of palatal mucosa were obtained from patients with IPHP, generally healthy/orally healthy patients with dentures, and healthy subjects. Immunohistochemical studies performed with specific antibodies to BM proteins. Scrapings and swaps of oral lesions from all patients and control groups were taken from the palate, and Candida species colonization was assessed with mycology tests. Immunohistochemical expression of BM components revealed thin linear staining in the BM of healthy palatal mucosa. In IPHP discontinuities or disruptions in BM were observed at the interface between epithelium and the underlying connective tissue in the areas of severe inflammatory response. Our findings suggest an interaction between the expression of BM components and Candida involvement in the development of IPHP, a disorder involving inflammatory reaction and modification of soft tissues.     

Immunolocalization of basement membrane molecules in the stroma of salivary gland pleomorphic adenoma

In order to determine the participation of basement membrane molecules in formation of its characteristic stroma, 30 cases of salivary gland pleomorphic adenoma were examined by immunohistochemical staining for type IV collagen, laminin, heparan sulfate proteoglycan, and entactin. The stroma was histopathologically classified into four types: hyaline, fibrous, myxoid, and chondroid. Immunohistochemically, type IV collagen and laminin were more intensively localized in hyaline, fibrous and chondroid types of stroma, whereas heparan sulfate proteoglycan was more prominent in myxoid areas. The results suggest that the stroma contains these basement membrane components, which are possibly biosynthesized by epithelial tumor cells, and that histological variety of the stroma depends on proportion of local contents of each basement membrane molecule.     

牙周炎患者唾液一氧化氮的含量及其与牙周病指标相关性的研究

目的：研究牙周炎患者唾液一氧化氮（ＮＯ）的含量,及其与牙周病各临床指标的相关性。方法：选择成人牙周炎患者２３例为实验组,健康人２７例为对照组。记录牙周炎患者的牙龈出血指数（ＧＢＩ）、牙周袋深度（ＰＤ）和附着丧失量（ＡＬ）。ＮＯ的含量由检测唾液亚硝酸盐的含量来代表。测定实验组和对照组所有病例的唾液ＮＯ的含量。结果：对照组唾液ＮＯ的含量为２８．８０６±６．６０４μｍ／Ｌ,男女间无显著性差异。实验组唾液ＮＯ的含量为５５．３６１±１３．３１９μｍｏｌ／Ｌ,明显高于对照组。牙周炎患者唾液ＮＯ的含量与ＰＤ、ＡＬ间存在明显的正相关。结论：牙周炎患者唾液ＮＯ的含量显著高于健康人,并与牙周炎的严重程度有关。     

The Clinical Efficacy of Gu Chisan Treating Adult Periodontitis

目的 :为了进一步验证固齿散治疗成人牙周炎的作用。方法 :本研究将 130例成人牙周炎患者随机分为实验组 (10 0例 )和对照组 (30例 )。在牙周基础治疗结束后 2周开始用药 ,每日两次 ,连续 30天。记录用药前、用药 30天和停药 6 0天时的各项临床观察指标。同时观察了固齿散对 2 0例成人牙周炎患者全身的影响。结果 :用药 30天 ,试验组牙动度和咬合力的改善程度显著大于对照组 (P <0 .0 0 1)。这些结果一直保持至停药 6 0天后。用药 30天后 ,齿散组平均比对照组咬合力增加 2 .2 6公斤 /牙 ,停药 6 0天后仍比对照组增加 1.0 2公斤 /牙。临床试验过程中未发现该药对心、肝、肾及血液系统有明显的毒副作用 ,口腔粘膜也无明显的改变。结论 :固齿散用于治疗成人牙周炎安全、有效。     

口腔癌相关成纤维细胞对人工基底膜的降解作用及其机制

目的观察口腔癌相关成纤维细胞（CAFs）降解人工基底膜matrigel的能力,并探讨其可能的作用机制。方法matrigel凝胶与CAFs和NFs共同培养24、48、72 h后,收集培养上清液,按照羟脯氨酸检测试剂盒说明测定羟脯氨酸含量;用考马斯亮兰微孔板法行微量蛋白定量;用明胶酶谱分析对基质金属蛋白酶- 2（MMP- 2）、基质金属蛋白酶- 9（MMP- 9）含量进行测定。结果在各时间段,口腔CAFs上清超滤液中羟脯氨酸含量、上清液总蛋白浓度及MMP- 2酶原含量明显高于NFs,且CAFs组表达大量MMP- 2活性酶。口腔CAFs和NFs皆不表达MMP- 9。结论CAFs具有较强的降解细胞外基质的能力,提示其与肿瘤- 宿主微环境中基质重建及肿瘤侵袭有关。     

Basement membrane-like structures occurring on the surface of dental papilla mesenchymal cells during odontogenesis in the monkey Macaca fuscata

The aim of this study was to examine the nature of a basement membrane-like structure occurring along the surface of dental papilla cells during odontogenesis. The tooth germs of Japanese macaques (Macaca fuscata) were prepared for both ultrastructural and immunohistochemical studies. Characteristic discrete structures which resembled basement membranes were observed along the surface of the dental papilla cells, preodontoblasts, and also of the odontoblasts. Immunoperoxidase staining showed that these structures contained major basement membrane components including laminin, heparan sulfate proteoglycan, type IV collagen, as well as fibroneetin. They tended to be less prominent along dental pulp fibroblasts and fully developed odontoblasts in comparison with those along the papilla cells localized close to the basement membrane of the inner enamel epithelium. Therefore, possible roles of these basement membrane-like structures would be: 1) to support the cells, 2) to momentarily secure the appropriate positions of differentiating mesenchymal cells, and 3) to regulate epithelial-mesenchymal interactions for odontoblast differentiation.     

成人牙周炎患者治疗前后龈沟液中谷胱甘肽过氧化物酶水平的变化

目的：了解谷胱甘肽过氧化物酶（ＧＰｘ）在牙周病变过程中的变化及其临床意义。方法：选择２３例成人牙周炎（ＡＰ）患者的４４颗患牙,记录临床指标ＧＩ、ＰＤ、ＡＬ,并测定治疗前后ＧＣＦ－ＧＰｘ水平。结果：ＧＣＦ－ＧＰｘ与ＰＤ、ＡＬ负相关（Ｐ〈０．０５,Ｐ,０．００５）,与ＧＩ无明显相关性。牙周治疗后临床指标均明显下降（Ｐ〈０．００１）,ＧＣＦ－ＧＰｘ水平明显上升（Ｐ〈０．００１）,但ＧＣＦ－ＧＰＸ水平的上