C-MET在涎腺腺样囊性癌中的表达和意义

目的:通过检测C-MET在涎腺腺样囊性癌组织中的表达,探讨C-MET与腺样囊性癌的关系及相关性,为临床的转移趋势、预后判断和术后的随诊监测提供一定的理论依据.方法:应用SP免疫组织化学法检测36例涎腺腺样囊性癌和10例正常涎腺组织中C-MET的表达.结果:C-MET主要表达于细胞浆,在36例涎腺腺样囊性癌中的C-MET阳性表达率为66.7％ (23/31),明显高于正常涎腺组织(0.00％),组间比较差异具有统计学意义(P＜0.05).C-MET蛋白与性别、年龄肿瘤大小无关(P＞0.05),与组织学分型,转移、侵润和复发有关(P＜0.05).结论:C-MET在腺样囊性癌组织中的表达明显高于正常涎腺组织,与涎腺腺样囊性癌的发生、发展及转移密切相关.     

PPAR7蛋白在人肺高、低转移涎腺腺样囊性癌细胞系中的作用

目的探讨过氧化物增殖体激活物受体ν（PPARν）在涎腺腺样囊性癌（SACC）肺转移细胞中的表达及其与转移的关系。方法利用逆转录一聚合酶链反应（RT—PCR）及实时定量PCR（Quantitative Real—time PCR）方法检测肺高转移性涎腺腺样囊性癌（SACC—LM）及肺低转移性涎腺腺样囊性癌（SACC-83）细胞系中PPARνmRNA的表达水平、结果SACC-LM细胞系中PPARνmRNA表达水平是SACC-83细胞中表达水平的4．346939倍（P＜0．01）。结论PPARν在SACC肺高低转移细胞系中的差异表达,初步证实PPARν在SACC远处转移方面有重要作用。     

PPARγ蛋白在人肺高、低转移涎腺腺样囊性癌细胞系中的作用

目的：探讨过氧化物增殖体激活物受体γ（ PPARγ）在涎腺腺样囊性癌（ SACC ）肺转移细胞中的表达及其与转移的关系。方法利用逆转录-聚合酶链反应（RT-PCR）及实时定量PCR（Quantitative Real-time PCR）方法检测肺高转移性涎腺腺样囊性癌（SACC-LM）及肺低转移性涎腺腺样囊性癌（SACC-83）细胞系中PPARγmRNA的表达水平。结果 SACC-LM细胞系中PPARγmRNA表达水平是SACC-83细胞中表达水平的4．346939倍（ P ＜0．01）。结论PPARγ在SACC肺高低转移细胞系中的差异表达,初步证实PPARγ在SACC远处转移方面有重要作用。     

泰素抑制涎腺腺样囊性癌远处转移的机制研究

目的:观察泰素(Taxol)对涎腺腺样囊性癌细胞远处转移的作用及其对肺转移灶血管内皮生长因子(VEGF)、基质金属蛋白酶(MMP-9)表达的影响.方法:用涎腺腺样囊性癌肺高转移细胞株(ACC-M)裸鼠肺转移模型观察泰素体内抗转移效果,免疫组化法检测转移灶肿瘤细胞VEGF和MMP-9的表达.结果:对照组与Taxol治疗组相比,2组之间瘤结节数差异有统计学意义(P＜0.05);Taxol治疗组VEGF及MMP-9表达明显弱于对照组(P＜0.05).结论:泰素对涎腺腺样囊性癌肺转移有较好的抑制效果,这可能与其抑制血管生成及基质金属蛋白酶表达有关.     

RhoA 和 Snail 在涎腺腺样囊性癌中的表达及意义

摘要： 目的 探讨 RhoA 和 Snail 在涎腺腺样囊性癌（SACC）中的表达及其与癌症侵袭转移的关系。 方法 采用免疫组织化学方法检测 RhoA 和 Snail 在 55 例 SACC（SACC 组）与 20 例癌旁正常组织（对照组）中的表达情况, 分析 RhoA 和 Snail 的表达与 SACC 临床病理特征的关系及其在 SACC 组织中表达的相关性。 结果 SACC 组的 RhoA （69.1% vs 5.0%）和 Snail（72.7% vs 10.0%）蛋白阳性表达率高于对照组（ 均 P < 0.05）; 有淋巴结转移者的 RhoA 和 Snail 阳性表达率高于无转移者, Ⅲ+Ⅳ期的 RhoA 和 Snail 阳性表达率高于Ⅰ +Ⅱ 期者;实体型的 RhoA 阳性表达率高于筛孔型, 实体型和管状型的 Snail 阳性表达率高于筛孔型（均 P < 0.05）, 而不同性别、年龄及肿瘤部位的 RhoA 和 Snail 阳性表达率差异无统计学意义; RhoA 和 Snail 在 SACC 中的表达呈正相关（rs=0.414, P < 0.001）。 结论 RhoA 和 Snail 蛋白可能通过 RhoA/ROCK/PKD1/NF-κB/Snail 信号传导通路联合作用促进了 SACC 的浸润和转移。     

P53蛋白、VEGF和CD34在涎腺腺样囊性癌中的表达及意义

目的 研究P53蛋白、血管内皮生长因子（vascular endothelial growth factor,VEGF）及微血管密度（microvessel density,MVD）在涎腺腺样囊性癌（salivar adenoid cystic carcinoma,SACC）中的表达,探讨其与SACC临床侵袭、转移等生物学行为的关系.方法 应用常规免疫组化法,分别检测SACC、腮腺多形性腺瘤（plemorphic adenoma,PA）及正常腮腺组织（normal salivary gland,SG） 各16例中P53蛋白和VEGF的表达以及MVD计数（CD34标记）,并进行统计分析.结果 SG、PA、SACC三组中的P53蛋白和VEGF的阳性表达率,MVD计数依序增加,各组间比较差异显著（P＜0.05）;SACC组中随着P53蛋白表达的增高,MVD也随之增加,呈显著正相关（r=0.55）;同时P53阳性表达率和MVD计数随着VEGF表达程度的增高亦显著增加.结论 P53蛋白、VEGF和CD34的表达与SACC的血管生成及发生、发展关系密切.     

The Expression of STAT3 and VEGF in Salivary Adenoid Cystic Carcinoma and Its Effect on Angiogenesis

目的:探讨信号转导和转录活化因子-3(STAT3)及血管内皮生长因子(VEGF)蛋白在涎腺腺样囊性癌(SACC)组织中的表达情况及其与SACC临床病理参数、血管生成的关系.方法:采用免疫组织化学法检测50例SACC(SACC组)与15例正常腮腺组织(对照组)中STAT3、VEGF蛋白表达和微血管密度(MVD).结果:(1)SACC组的STAT3及VEGF蛋白表达阳性率分别为66％和72％,明显高于正常组的6.7％和20％(P＜0.01).(2)STAT3和VEGF的表达在SACC的不同组织类型、TNM分期、有无淋巴结转移方面差异均有统计学意义(P＜0.05),但在不同性别、年龄及肿瘤部位方面差异均无统计学意义(P＞0.05).(3)STAT3与VEGF表达呈正相关(P＜0.05);SACC组的STAT3蛋白及VEGF蛋白表达中阳性与阴性者的MVD差异比较均有统计学意义(均P＜0.05).结论:STAT3可能通过上调VEGF表达,促进SACC中新生血管的形成,STAT3可能会成为SACC的抗血管生成的治疗靶点.     

层粘连蛋白及其受体对涎腺腺样囊性癌生物学行为的影响

目的 :研究涎腺腺样囊性癌中层粘连蛋白 (LN)及其受体 (LN -R)表达特征及其与腺样囊性癌的临床病理指标的关系。方法 :用超敏S -P免疫组化方法检测34例涎腺腺样囊性癌LN和LN -R的表达。结果 :LN -R的表达与涎腺腺样囊性癌组织分型、临床分期有关 (P<0.05) ,LN的表达仅与腺样囊性癌的组织分型有关 (P<0.05)。结论 :LN及其受体LN -R的表达可作为涎腺腺样囊性癌恶性程度的一个指标     

层粘连蛋白在涎腺腺样囊性癌中的表达

目的：研究层粘连蛋白在涎腺腺样囊性癌中的表达特征及其与腺样囊性癌的某些临床病理指标的关系。方法：用超敏S－P免疫组化方法检测21例涎腺腺样囊性癌层粘连蛋白的表达。结果：腺样囊性癌组织分型与层粘连蛋白的表达。结果：腺样囊性癌组织分型与层粘连蛋白的表达密切相关（P＜0．05），而与临床分期无关（P＞0．05）。结论：层粘连蛋白的表达可作为腺样囊性癌组织分化的一个指标。     

涎腺腺样囊性癌血管内皮生长因子表达的意义

目的 探讨涎腺腺样囊性癌血管内皮生长因子表达的意义。方法 采用免疫组织化学SP法检测34例涎腺腺样囊性癌VEGF的表达。结果 VEGF表达与涎腺腺样囊性癌病理分型、淋巴结转移、临床分期有关,与发病部位、肿瘤大小无关。结论 VEGF的表达可作为判断涎腺腺样囊性癌生物学行为的一个指标。     

Affective and Anxiety Disorders and Alcohol and Drug Dependence:

Depression and anxiety frequently coexist in patients with substance use disorders. This clinically-oriented article examiens the relationship between these conditions and emphasizes data showing that substances of abuse can cause signs and symptoms of both depression and anxiety. These substance-related syndromes appear to have a different course and prognosis than uncomplicated, independent anxiety and major depressive disorders, and clinicians should consider the role of alcohol and other drugs in all patients presenting with these complaints. The authors will also outline an approach for diagnosing and managing patients with the combination of a substance use and depressive or anxiety disorder.     

Alcohol and Substance Use and Abuse in Women and Children

No abstract available for this article.     

Degraded and undegraded carrageenans and experimental gastric and duodenal ulceration

The prevention of histamine-induced gastric and duodenal ulceration in the guinea-pig has been examined using a series of undegraded and degraded carrageenans. Undegraded carrageenans were active at lower doses than degraded carrageenans. The high viscosity of the undegraded carrageenans in solution prevented their use in larger doses. Degradation of carrageenan without serious loss of sulphate, gives a product which allows the dose to be increased to an extent that its effect more than offsets the slight loss in activity caused by the degradation. No single feature of carrageenan structure can be related to anti-ulcer activity although degradation, and hence reduction of molecular size, generally reduces activity. Sulphate contents over 30% have little apparent effect on activity; κ-carrageenans were not consistently different in anti-ulcer activity from Λ-carrageenans. This contrasts with the antipeptic activity of carrageenans where κ-carrageenans are less active than their Λ-counter-parts. As with antipeptic activity, the degree of anti-ulcer activity is probably determined by a combination of structural features which includes molecular size and polyanionic properties.     

Excretion and biotransformation of alfentanil and sufentanil in rats and dogs

The excretion and biotransformation of alfentanil (ALF) and sufentanil (SUF), two recent analogues of the synthetic opioid fentanyl, were studied after single iv administration of the tritium-labeled drugs in male rats and dogs. The drugs were almost completely metabolized in the two species, which resulted in a large number of metabolites. The excretion of the metabolites was rapid and exceeded 95% within 4 days, except for that of ALF metabolites in dogs (about 85%). For ALF, excretion of the radioactivity with the urine (73% in rats, about 76% in dogs) exceeded that with the feces. For SUF, excretion of the radioactivity with the urine amounted to 38 and 60% and that with the feces to 62 and 40%, in rats and dogs, respectively. Bile-cannulated rats excreted 68% with the bile within 24 hr after SUF dosing, and about 22% of this biliary radioactivity was subjected to enterohepatic circulation. After an ALF dose, the biliary excretion amounted to 24%, and the enterohepatic circulation was minimal. The main metabolic pathways of the two drugs were the oxidative N-dealkylation at the piperidine nitrogen and at the amide nitrogen, oxidative O-demethylation, aromatic hydroxylation, and the formation of ether glucuronides. N-[4-(Hydroxymethyl)-4-piperidinyl]-N-phenylpropanamide (M6) was the main metabolite of both ALF and SUF in rats. In dogs, the glucuronide of N-(4-hydroxyphenyl)propanamide (M5) was the main metabolite of ALF. After SUF dosing in dogs, N-[4-(methoxymethyl)-4-piperidinyl]-N-phenylpropanamide was more abundant than M5.