槟榔提取物对口腔黏膜成纤维细胞表达细胞间粘黏分子—1的影响

目的 咀嚼槟榔与口腔黏膜下纤维性变（OSF）有关，但其相关机制尚不清楚。观察槟榔提取物（ANE）对体外培养的人类口腔黏膜成纤维细胞（FB）表达细胞间黏附分子-1（ICAM-1）的影响，探讨FB与ICAM-1在OSF发生中的作用。以槟榔提取物对体外人口腔黏膜成纤维细胞表达细胞间黏附分子的影响，证明咀嚼槟榔与OSF发病机制相关的若干假设成立。方法 所有口腔黏膜标本都采自1997-07/1998-04在中南大学湘雅二医院口腔科就诊的患者，经临床及病理确诊为OSF者（男8例，女例）作为实验组。另外，从同时间来院的手术患者中，选择无槟榔、烟酒及辣椒嗜好，年龄与实验组匹配者（男6例，女5例），作为对照组。分别从正常（NM）及OSF患者的口腔黏膜中培养出FB表达的ICAM-1水平。结果 表示ICAM-1水平高低的OD值在OSF-FB为0.386&;#177;0.099,高于NM-FB的OD值0.324&;#177;0.030(F=18.177,P=0.001）；ANE在50-150μg/ml内以浓度-效应依赖关系刺激FB产生ICAM-1。结论 ANE能上调FB表达ICAM-1的水平，从而间接促进纤维化过程，引起OSF的发生。     

嚼槟榔与口腔黏膜下纤维化癌变之间的关系

目的观察嚼槟榔与口腔黏膜下纤维化癌变之间的关系。方法选取2019年1月—12月于本院就诊且行手术治疗的160例口腔黏膜下纤维化(oral submucous fibrosis, OSF)癌变患者作为病例组,选取本院同期门诊就诊的OSF但无口腔鳞状细胞癌的患者160例作为对照组,采用调查问卷形式展开,调查内容主要包括:(1)OSF相关信息:患者何时开始使用槟榔、咀嚼槟榔持续时间(年)、每天咀嚼槟榔量(颗/d);(2)OSF专科检查:病理诊断分期;(3)口腔癌相关信息:发病时间、手术后病理分级。采用单因素分析、Mantel-Haenszel分层分析,多因素分析采用非条件logistic回归分析咀嚼槟榔及其与口腔癌间的关系。结果研究结果显示,咀嚼槟榔时间与OSF癌变呈现明显的正相关关系(P0.001),每日咀嚼槟榔量与OSF癌变呈现明显的正相关关系(P0.001),Mantel-Haenszel分层分析结果显示不同年龄的每日嚼槟榔量对口腔黏膜下癌变差异无统计学意义;每日咀嚼槟榔量OR_(MH)值明显未调整时OR_C,提示年龄对每日咀嚼槟榔量具有缩小作用。非条件logistic回归分析结果显示年龄(OR 95%CI:1.087～4.498)、咀嚼槟榔时间(OR 95%CI:1.267～4.212)和日咀嚼槟榔颗数(OR 95%CI:1.526～3.202)为OSF癌变的独立危险因素。结论年龄越大、咀嚼槟榔时间越长、每日咀嚼槟榔数量越多是OSF癌变的独立危险因素,且咀嚼槟榔的时间和量与OSF癌变呈明显的正相关关系。     

碱性成纤维细胞生长因子对许旺细胞在小肠黏膜下层支架上黏附及增殖的影响

背景:许旺细胞复合小肠黏膜下层是构建人工神经的可行方法,碱性成纤维细胞生长因子有促进许旺细胞增殖的作用.目的:验证碱性成纤维细胞生长因子对许旺细胞在小肠黏膜下层支架材料表面的细胞增殖及黏附状态的影响.方法:将体外分离培养的2代SD乳鼠许旺细胞接种于小肠黏膜下层支架材料上并加入50μg/L的碱性成纤维细胞生长因子复合培养为实验组,以单纯的许旺细胞复合小肠黏膜下层作为对照组,分别用MTT法测定细胞增殖能力,细胞黏附率检测细胞在支架上的黏附情况,用流式细胞仪测定细胞分裂周期,并用苏木精-伊红染色及描电镜观察细胞形态及与材料的贴附情况.结果与结论:MTT显示实验组的细胞增殖吸光度值明显高于对照组(P<0.05),实验组的细胞黏附率为(69.47±3.17)%,对照组为(44.58±1,76)%(P<0.05),细胞周期显示实验组比对照组的G2/M+S期细胞百分含量高(P<0.05),培养7 d后的苏木精伊红染色及扫描电镜显示实验组比对照组材料上聚集的细胞数量多,细胞形态伸展更明显,细胞贴附力更好.因此碱性成纤维细胞生长因子可明显地改善许旺细胞在小肠黏膜下层上的增殖及黏附能力,能促进许旺细胞与小肠黏膜下层支架的复合而构建人工神经导管.     

咀嚼槟榔等生活习惯与口腔黏膜下的纤维性变

目的：分析口腔黏膜下纤维性变发病与咀嚼槟榔及相关生活习惯的关系。方法：选择2001-05／2003-09中南大学湘雅医院口腔科就诊口腔黏膜下纤维性变患者50例进行调查分析，调查内容包括可能引起口腔黏膜下纤维性变的相关危险因素：咀嚼槟榔史、年龄、性别、职业、文化程度、饮食习惯、口腔卫生状况、烟酒嗜好。用非条件的Logistic：回归分析法进行单因素和多因素回归分析(偏回归系数越大反映相关性越大)。结果：50例患者均进入结果分析。①单因素回归分析结果：与口腔黏膜下纤维性变发病有显著意义的因素有咀嚼槟榔史、饮食习惯、酗酒和职业。②多因素Logistic分析结果：咀嚼槟榔史X4在口腔黏膜下纤维性变发生中作用大于饮食习惯X5、酗酒X7及职业X9(偏回归系数分别为7．55&;#177;4．16，2.31&;#177;0.31，1．74&;#177;0．25，0．58&;#177;0.02)，回归方程为Y=0．08+7．55X4+2.13X5+1．74X7+0．58X9，回代结果显示其灵敏度为61．81％，特异度为72．14％。准确度为75．01％。结论：口腔黏膜下纤维性变主要发病因素为咀嚼槟榔，饮食习惯、酗酒和职业为次要发病因素。     

咀嚼槟榔等生活习惯与口腔黏膜下的纤维性变

目的:分析口腔黏膜下纤维性变发病与咀嚼槟榔及相关生活习惯的关系。方法:选择2001-05/2003-09中南大学湘雅医院口腔科就诊口腔黏膜下纤维性变患者50例进行调查分析,调查内容包括可能引起口腔黏膜下纤维性变的相关危险因素:咀嚼槟榔史、年龄、性别、职业、文化程度、饮食习惯、口腔卫生状况、烟酒嗜好。用非条件的Logistic回归分析法进行单因素和多因素回归分析(偏回归系数越大反映相关性越大)。结果:50例患者均进入结果分析。①单因素回归分析结果:与口腔黏膜下纤维性变发病有显著意义的因素有咀嚼槟榔史、饮食习惯、酗酒和职业。②多因素Logistic分析结果:咀嚼槟榔史X4在口腔黏膜下纤维性变发生中作用大于饮食习惯X5、酗酒X7及职业X9(偏回归系数分别为7.55±4.16,2.31±0.31,1.74±0.25,0.58±0.02),回归方程为Y=0.08+7.55X4+2.31X5+1.74X7+0.58X9,回代结果显示其灵敏度为61.81%,特异度为72.14%,准确度为75.01%。结论:口腔黏膜下纤维性变主要发病因素为咀嚼槟榔,饮食习惯、酗酒和职业为次要发病因素。     

细胞间黏附分子-1和P-选择素在鼻息肉中的表达

目的:揭示细胞间黏附分子-1(ICAM-1,CD54)和P-选择素(CD62p)在鼻息肉发病机制中的作用.方法:收集鼻息内标本32例,炎性鼻甲黏膜11例,正常鼻黏膜12例作对照,应用FACScan流式细胞仪测定不同标本内表达这两种黏附分子的阳性细胞数量.结果:鼻息肉和炎性鼻甲黏膜ICAM-1和P-选择素的细胞阳性率均明显高于正常鼻黏膜(P＜0.001);鼻息肉和炎性鼻甲黏膜之间ICAM-1和P-选择素的细胞阳性率差异无显著性(P＞0.05);ICAM-1和P-选择素在鼻息肉中的表达有正相关关系(r=0.900 1,P＜0.001).结论:ICAM-1和P-选择素在鼻炎和鼻息肉发病过程中都起了重要作用,在鼻息肉中二者表达有一致性.     

嗜酸粒细胞对支气管上皮细胞表达细胞间黏附分子1的诱导作用

目的探讨嗜酸粒细胞与支气管上皮细胞联合培养对支气管上皮细胞表达细胞间黏附分子(ICAM)-1的影响。方法人嗜酸粒细胞与支气管上皮细胞(BEAS-2B)联合培养4和12h,提取BEAS-2B细胞总RNA;通过逆转录聚合酶链反应(RT-PCR)方法分析与嗜酸粒细胞联合培养对BEAS-2B细胞中ICAM-1基因表达的影响;BEAS-2B细胞表面ICAM-1蛋白质的变化用荧光抗体流式细胞分析。结果经嗜酸粒细胞活化后,BEAS-2B细胞中ICAM-1基因表达上调;BEAS-2B细胞表面ICAM-1蛋白质量显著增加(34.23±4.19和57.60±7.62,P<0.05)。结论嗜酸粒细胞与支气管上皮细胞接触培养可诱导支气管上皮细胞表达ICAM-1。     

卡介苗体外诱导鼻咽癌CNE-2Z细胞ICAM-1表达

摘要：目的：探讨卡介苗（bacillus CalmetteGuerin,BCG）对鼻咽癌（nasopharyngeal carcinoma,NPC）CNE-2Z细胞及细胞间黏附分子1（intercellular adhesion molecule1,ICAM-1）表达的影响及可能的调控机制。 方法：显微镜观察细胞形态学变化和记录细胞被胰蛋白酶完全消化所用时间;流式细胞术检测细胞表面ICAM-1表达;免疫细胞化学检测细胞NF-κB表达,western blot检测ICAM-1、NF-κB表达。 结果：BCG作用24、48和72 h细胞对培养介质的粘附力增加,且被胰蛋白酶完全消化所用的时间明显长于对照组［(5.8±0.4)、(7.8±0.4)、(8.8±0.4) min vs (5.0±0.5) min,F=22.01,P<0.01］;流式细胞术检测24、48和72 h组ICAM-1表达的平均荧光强度（MnX）明显高于对照组［(25.2±0.4)、(28.7±1.1)、(37.2±1.6) vs(23.4±0.9), F=112.34,P<0.01］;免疫细胞化学结果表明,BCG作用72 h组NF-κB表达水平高于对照组。western blot结果表明,各组NF-κB和ICAM-1表达均明显高于对照组。 结论：BCG体外诱导鼻咽癌CNE-2Z细胞ICAM-1表达,且该过程可能与NF-κB信号途径有关。     

NF-κBp65和ICAM-1在口腔扁平苔藓中的表达及相关性

目的:研究NF-κBp65、ICAM-1在口腔扁平苔藓和正常口腔黏膜组织中的表达及相关性.方法:采用免疫组织化学法及蛋白印记法检测30例口腔扁平苔藓组织、15例正常口腔黏膜组织中NF-κBp65、ICAM-1的表达情况.结果:(1)口腔扁平苔藓组织中NF-κBp65和ICAM-1的表达分别较正常口腔黏膜组织显著增加(P<0.01);(2)NF-κBp65和ICAM-1蛋白在口腔扁平苔藓组织中的表达成正相关(r=0.774,P=0.000).结论:NF-κBp65的激活导致了口腔扁平苔藓中ICAM-1表达的增强,抑制NF-κBp65的活性可能是防治OLP的一种新方法.     

体外二氧化碳气腹对膀胱癌黏附分子表达的影响

目的探讨二氧化碳(CO2)气腹对膀胱癌细胞黏附分子表达的影响。方法体外培养膀胱癌T24细胞,以15mmHgCO2压力,作用于癌细胞2、4和6h,以免疫细胞化学法检测各组T24细胞株E-钙调素,整合素α6β4、α2β1,ICAM-1及CD44V6等蛋白的表达。结果体外模拟CO2气腹对T24细胞体外黏附细胞分子表达有影响:ICAM-1、CD44V6表达升高(均为P<0.01);并与作用时间呈相关(均为P<0.05);E-钙调素的表达减少(P<0.01),随CO2气腹作用时间呈负相关(P<0.05)。整合素α6β4、α2β1的表达明显改变(均为P>0.05)。结论 CO2气腹环境可引起体外培养的膀胱癌细胞黏附细胞分子表达改变,这可能促进癌细胞扩散转移的能力。     

The role of epithelial-mesenchymal transition in oral squamous cell carcinoma and oral submucous fibrosis

Epithelial-mesenchymal transition (EMT) is an indispensable mechanism during morphogenesis. Interest and research in EMT are currently at a high level due to its important role in cancer and fibrosis. Emerging evidence suggests that EMT is also a crucial event in oral squamous cell carcinoma (OSCC). Oral submucous fibrosis (OSF) is a chronic debilitating disease and a premalignant condition of the oral cavity. It is characterized by a generalized submucosal fibrosis. The pathogenesis of the disease is not well established. Epidemiological evidence strongly indicates an association between the betel quid (BQ) chewing habit and OSF. In a simplistic view, OSF represents a failed wound-healing process of the oral mucosa after chronic, sustained injury. This review highlights the signaling pathways involved in EMT, recent advances in the study of EMT in OSCC, and summarizes the evidence supporting a role for EMT in the pathogenesis of OSF.     

Precancerous lesions of oral mucosa

Precancerous lesions of oral mucosa, known as potentially malignant disorders in recent years, are consists of a group of diseases, which should be diagnosed in the early stage. Oral leukoplakia, oral submucous fibrosis, and oral erythroplakia are the most common oral mucosal diseases that have a very high malignant transformation rate. Oral lichen planus is one of the potentially malignant disorders that may be seen in six different subtypes including papular, reticular, plaque-like, atrophic, erosive, and bullous type, clinically. Atrophic and erosive subtypes have the greater increased malignant transformation risk compared to another subtypes. Although there are various etiological studies, the etiology of almost all these diseases is not fully understood. Geographically, etiologic factors may vary. The most frequently reported possible factors are tobacco use, alcohol drinking, chewing of betel quid containing areca nut, and solar rays. Early diagnosis is very important and can be lifesaving, because in late stages, they may be progressed to severe dysplasia and even carcinoma in situ and/or squamous cell carcinoma. For most diseases, treatment results are not satisfactory in spite of miscellaneous therapies. While at the forefront of surgical intervention, topical and systemic treatment alternatives such as corticosteroids, calcineurin inhibitors, and retinoids are widely used.     

17β-雌二醇抑制NF-kappa Bp65表达对CCl_4诱导大鼠肝纤维化中肝细胞损伤的意义

目的探索17β-雌二醇（E2）抑制NF-kappa Bp65的表达在四氧化碳（CCl4）诱导Wistar大鼠肝纤维化中肝细胞损伤的意义。方法采用实时荧光定量PCR（SYBR GREEN）技术测量雌二醇治疗的肝纤维化模型大鼠肝脏组织中雌激素受体α（ERα）mRNA和NF-kappa Bp65mRNA的表达;采用免疫组化S-P方法检测肝细胞NF-kappa Bp65和ICAM-1表达并分析与肝细胞损害的关系。结果雌二醇治疗组的肝细胞纤维化模型大鼠ERαmRNA表达高于对照组和他莫昔芬组（P〈0.05）,而NF-kappa Bp65和ICAM-1表达以及ICAM-1免疫组化表达则低于对照组和他莫昔芬组（P〈0.05）;雌二醇治疗组的肝细胞损伤的程度也低于对照组和他莫昔芬组。结论E2通过ERα途径抑制NF-kappa Bp65在大鼠肝细胞中的表达,从而减轻了肝细胞的损伤。     

自体唇黏膜移植修补羟基磷灰石义眼座植入后的眼座暴露

背景：修补羟基磷灰石义眼座暴露的移植物很多,包括异体巩膜、羊膜、口腔黏膜和游离皮瓣。其中自体口腔唇黏膜属于黏膜组织,具有一定的黏液分泌功能,上皮细胞增生速度快,修复好,同时自体唇黏膜不会发生移植排斥反应。目的：观察自体唇黏膜移植修补羟基磷灰石义眼座植入后眼座暴露的效果。方法：2006-01/2010-10羟基磷灰石义眼座植入后出现眼座暴露11例（11只眼）,男6例,女5例。年龄41~67岁,平均年龄54岁。5例行单纯自体唇黏膜修补,6例取出眼座,进行自体唇黏膜移植＋结膜囊成形。移植后观察唇黏膜存活情况,结膜囊深度,睑裂高度和外观。结果与结论：随访1~12个月唇黏膜生存良好,与球结膜融合。结膜囊大小深度正常,双侧睑裂高度基本对称,外观满意,11例患者均无羟基磷灰石再暴露并发症发生。结果显示采用自体唇黏膜移植可以有效修复羟基磷灰石义眼座植入后眼座暴露,能较好地满足患者外观需求。     

ICAM-1 expression on conjunctival epithelial cells in patients with cystic fibrosis

BACKGROUND: Cystic fibrosis is one of the most common lethal genetic conditions. The defect is due to mutations in a gene on chromosome 7, named the cystic fibrosis transmembrane regulator (CFTR), which functions as a chloride channel in epithelial membranes It is presumed that the disease affects all secretory epithelia including the eye. The objective of this study is to investigate the expression of intercellular adhesion molecule-1 (ICAM-1) by conjunctival epithelial cells of patients with cystic fibrosis and the correlation between of the expression of ICAM-1 and the grade of cystic fibrosis severity. METHODS: Impression cytology specimens were collected in 24 patients with cystic fibrosis. Cells were processed for flow cytometry, by using monoclonal antibodies to ICAM-1. RESULTS: A significant increase of ICAM-1 expression on epithelial cells was found in patients with cystic fibrosis when compared with normal eyes. A positive correlation between the ICAM-1 expression and severe clinical status of CF patients was also observed. CONCLUSIONS: Our findings suggest that the inflammation appears to have a role in the pathogenesis of the ocular surface changes in patients with cystic fibrosis. ICAM-1 expression on conjunctival epithelial cells may be a marker of the inflammatory status in cystic fibrosis patients. The method described here reveal good repeatability and reliability for the analysis of the inflammatory markers on conjunctival epithelial cells and can be a useful tool in evaluating of the ocular findings and treatment interventions in patients with cystic fibrosis.     

Acute Toxicities of Betel Nut: Rare but Probably Overlooked Events

Background: Betel nut chewing has long been a social habit in Taiwan and other Asian and tropical countries. It produces various autonomic and psychoneurologic effects including tachycardia, flushing, warmth, cholinergic activation, alertness, and euphoria. Although the oral carcinogenic effects are well known, data concerning its acute toxicity are few. To better understand the toxicity of betel nut, cases reported to the Taiwan Poison Control Center as probable or possible betel nut–related toxicity (January 1988–June 1998) were reviewed. In the 17 cases suitable for review (14 males, 3 females, age 21 to 60 years), the most common manifestations were tachycardia/palpitations ; tachypnea/dyspnea ; hypotension and sweating ; vomiting, dizziness, and chest discomfort ; abdominal colic, nausea, numbness, and coma ; and acute myocardial infarction and related manifestations . The reported quantity of betel nut used was low (1 to 6 nuts), except an extract of 100 betel nuts was used in 1 case and 66 chewed in another. Most cases recovered within 24 hours after the exposure. One patient developed probable acute myocardial infarction and ventricular fibrillation and died despite repeated cardiac defibrillation. Although betel nut chewing is widespread, significant toxicity as reported to a poison center is rare. Because most betel nut–related effects are transient and mild in nature, the incidence of such events is likely to be underreported. Nevertheless, betel nut chewing can produce significant cholinergic, neurological, cardiovascular, and gastrointestinal manifestations. It is possible that it may aggravate cardiac diseases in susceptible patients but this hypothesis must be further investigated. Treatment is symptomatic. With timely support, rapid and complete recovery is anticipated but a small risk of major complications cannot yet be discounted.     

Altered calmodulin activity in buccal epithelial cells from cystic fribrosis patients

Boiled extracts of buccal epithelial cells from control subjects and cystic fibrosis patients were shown to possess calmodulin like activity, as assessed by their ability to activate calmodulin-deficient cyclic AMP phosphodiesterase. Estimation of calmodulin content, using pure calmodulin as standard revealed that control extracts contained 3.08 ± 0.71 (n = 7) μg calmodulin/mg protein and cystic fibrosis extracts 0.88 ± 0.30 (n = 12) μg calmodulin/mg protein (p < 0.02 for difference from control). The results indicate that the biological activity of calmodulin is altered in buccal epithelial cells from cystic fibrosis individuals.     

细胞间黏附分子-1在家兔急性鼻窦炎上颌窦黏膜中的表达

目的:探讨细胞间黏附分子-1(intercellular adhesion molecule-1,ICAM-1)在家兔急性鼻窦炎上颌窦黏膜中的表达及意义。方法:健康成年新西兰白兔24只,随机分成鼻腔置入Merocel!高分子膨胀海绵+鼻腔注入肺炎链球菌组(A组,8只)、单纯鼻腔置入Merocel!高分子膨胀海绵组(B组,8只)及空白对照组(C组,8只)。10d后将动物处死,完整取出实验侧上颌窦,脱钙3周后采用免疫组化检测上颌窦黏膜中ICAM-1的表达。结果:ICAM-1在A组家兔上颌窦黏膜上皮细胞、腺上皮细胞、血管内皮细胞及固有层炎性细胞中大量表达;B组上颌窦黏膜ICAM-1的表达量也明显增加,但阳性表达强度弱于A组;C组上颌窦黏膜上皮细胞、腺上皮细胞极少量表达ICAM-1,3组间比较差异均有统计学意义(P<0.05)。结论:ICAM-1在实验性急性鼻窦炎鼻窦黏膜中大量表达,在急性鼻窦炎炎症进程中起重要作用。     

带血管蒂上斜方肌皮瓣即刻整复颊癌术后缺损手术配合体会

目的:探讨带血管蒂上斜方肌皮瓣即刻整复颊癌术后颊部缺损的手术配合方法。方法:对10例采用带血管蒂的上斜方肌皮瓣即刻修复颊癌术后颊部缺损手术病例进行回顾性分析,总结其手术配合方法及要点。结果:患者术后肌皮瓣全部成活,咀嚼功能正常,面部外形好。结论:带血管蒂上斜方肌皮瓣即刻整复颊癌术后缺损术是一种可靠的面部缺损整复手术,良好的手术配合是手术成功的关键。