外周血基质金属蛋白酶及其抑制剂与甲状腺癌相关性分析

目的:探讨外周血中基质金属蛋白酶-2(MMP-2)、基质金属蛋白酶-9(MMP-9)、金属蛋白酶组织抑制剂-2(TIMP-2)和金属蛋白酶组织抑制剂-1(TIMP-1)与甲状腺癌的相关性。方法:采用酶联免疫吸附法(ELISA)和RT-PCR法检测30例甲状腺癌患者、27例良性甲状腺肿瘤患者和25例健康志愿者外周血中MMP-2、MMP-9、TIMP-2和TIMP-1的表达水平,分析两者与甲状腺癌之间的关系。结果:甲状腺癌、良性甲状腺病变和健康对照组血清中MMP-2的表达分别为(118.88±7.59)、(51.13±6.89)和(47.55±8.61)ng/mL,TIMP-2分别为(70.78±8.58)、(36.05±7.34)和(32.56±7.27)ng/mL,MMP-9分别为(110.18±15.49)、(56.39±10.90)和(49.28±11.64)ng/mL,TIMP-1分别为(63.62±9.95)、(38.53±8.31)和(34.01±8.22)ng/mL。甲状腺癌患者外周血中的表达均明显高于良性甲状腺肿瘤患者和健康志愿者P=0.000;良性甲状腺肿瘤患者和健康志愿者之间差异无统计学意义,P>0.05。结论:外周血中MMP-2、MMP-9、TIMP-2和TIMP-1的表达水平有助于甲状腺肿瘤良恶性的鉴别,是重要的术前评估手段。     

MMPs及TIMPs在脑膜瘤脑浸润和瘤周水肿中的作用

目的：研究基质金属蛋白酶-2(MMP-2)、基质金属蛋白酶-9(MMP-9)及其特异性抑制剂金属蛋白酶组织抑制剂-1(TIMP-1)、金属蛋白酶组织抑制剂-2(TIMP-2)在脑膜瘤组织中的表达与肿瘤脑浸润和瘤周水肿及组织学类型的关系。方法：用免疫组化分别检测脑膜瘤组织中MMP-2、MMP-9、TIMP-1和TIMP-2蛋白的表达；并比较各指标在不同组织中表达的差异性，分析其意义。结果：有脑浸润或瘤周水肿的脑膜瘤MMP-2、MMP-9阳性表达率较无脑浸润，无瘤周水肿的脑膜瘤高(P=0.023、0.028，P=0．027、0．031)；非典型性及恶性脑膜瘤较良性脑膜瘤高表达MMP=2、MMP=9，P=0．023、0.025；TIMP-1、TIMP-2的表达阳性率在各肿瘤中差异无统计学意叉，P=0．065、0.075；脑浸润与瘤周水肿关系密切(χ^2=11．23，P=0.0024)。结论：MMP-2、MMP-9、TIMP-1、TIMP-2对脑膜瘤的生物学行为的评估有重要意义。     

基质金属蛋白酶及其抑制剂在乳腺癌中的表达及其临床意义

背景与目的:基质金属蛋白酶(matrixmetalloproteinase,MMP)与基质金属蛋白酶组织抑制剂(tissueinhibitorofmatrixmetalloproteinase,TIMP)的表达失平衡在肿瘤侵袭、转移过程中起重要作用,但与乳腺癌预后关系的报道少见。本研究探讨MMP-2、MMP-9和TIMP-1、TIMP-2的表达与乳腺癌侵袭、转移和预后的关系。方法:原位杂交、免疫组化检测66例有临床和随访资料的乳腺癌患者的MMP-2mRNA、TIMP-2mRNA和MMP-2、MMP-9、TIMP-1、TIMP-2蛋白表达。统计学分析采用χ2检验、Kaplan-Meier和Cox多因素回归分析。结果MMP-2mRNA、TIMP-2mRNA和MMP-2、MMP-9、TIMP-1TIMP-2蛋白的阳性表达率分别为66.7%(44/66)、65.2%(43/66)和71.2%(47/66)、68.2%(45/66)、40.9%(2766)、69.7%(46/66),其中MMP-2蛋白与MMP-2mRNAMMP-9蛋白及TIMP-2mRNA与TIMP-2蛋白的表达存在显著性正相关(P<0.01);TIMP-1与MMP-9蛋白表达呈负相关(P<0.01)。有淋巴结转移的乳腺癌中MMP-2、MMP-9蛋白表达显著高于无转移者,但TIMP-2mRNA、TIMP-1蛋白表达显著低于无转移者(P<0.05)。乳腺癌中MMP-2mRNA和MMP-9蛋白表达与肿块大小、生存状况有显著性相关(P0.05),此外,MMP-9蛋白表达与临床分期存在正相关性(P<0.01)。绝经和ER表达阴性患者的MMP-2mRNA表达水平增高(P<0.     

骨巨细胞瘤基质金属蛋白酶系统的表达及其与复发的关系

目的：研究骨巨细胞瘤组织中基质金属蛋白酶-2和基质金属蛋白酶-9（matrix metalloproteinase,MMP-2,MMP-9)及其特异性抑制剂金属蛋白酶组织抑制物-1和金属蛋白酶组织抑制物-2（tissue inhibitors of metalloproteinase,TIMP-1和TIMP-2）和尿激酶型纤溶蛋白酶原激活物（urokinase type plasminogen activator,uPA)的表达与肿瘤复发的关系。方法：用免疫组化法和原位杂交法检测45例骨巨细胞瘤组织中MMP2、MMP-9、TIMP-1、TIMP-2和uPA蛋白和RNA的表达,计算MMP-2/TIMP-2和MMP-9/TIMP-1的比值,对比肿瘤复发组和非复发组的差异。结果：骨巨细胞瘤组织有高水平的MMP-2、MMP-9、TIMP-1、TIMP-2和uPA表达,但与肿瘤的形态分级无关。复发组MMP-2、MMP-9和MMP-2/TIMP-2、MMP-9/TIMP-1比值以及uPA表达均比非复发组明显增高,高水平MMP-2、MMP-9、MMP2/TIMP-2、MMP-9/TIMP-1表达的病例复发时间较早,复发风险较高。结论：骨巨细胞瘤的复发与基质金属蛋白酶和酶激活物表达增高,酶抑制剂表达减低相关。     

MMP-9,2,7及其抑制剂TIMP-1,2,3在卵巢肿瘤组织中的表达及临床意义

背景与目的:基质金属蛋白酶(matrixmetalloproteinases,MMPs)通过降解细胞外基质在肿瘤的侵袭与转移中起着重要作用,MMPs活性又受到其抑制剂(tissueinhibitorofmatrixmetalloproteinase,TIMPs)的调节。本研究通过检测MMP-9、MMP-2、MMP-7及TIMP-1、TIMP-2、TIMP-3mRNA在卵巢肿瘤组织中的表达,探讨其与卵巢癌临床病理特征和预后的关系。方法:应用RT-PCR方法检测48例卵巢癌、21例良性肿瘤及22例正常卵巢组织中MMP-9、MMP-2、MMP-7及TIMP-1、TIMP-2、TIMP-3mRNA的表达。结果:MMP-9阳性率和MMP-9、MMP-2半定量值在卵巢癌组织中明显高于正常卵巢组织(P<0.05)。TIMP-2、MMP-7、TIMP-3在卵巢恶性及良性肿瘤组织中的阳性率及半定量值明显高于正常卵巢组织。MMP-9/TIMP-1在卵巢癌组织中的比值(0.91±0.67)明显高于正常卵巢组织(0.15±0.34)。MMP-9表达水平与卵巢癌的手术病理分期及预后有关,在Ⅲ～Ⅳ期患者中的表达(1.13±0.66)显著高于Ⅰ～Ⅱ期患者(0.60±0.54)(P<0.05);MMP-9其阳性患者平均生存时间为(43.00±17.12)个月,累积生存率为47.37%,明显低于MMP-9阴性者(100%)。结论:MMP-9、MMP-2、MMP-7、TIMP-2、TIMP-3基因在卵巢恶性肿瘤组织中的表达增加。MMP-9的高表达及MMP-9与TIMP-1的平衡失调在晚期卵巢癌的发     

血浆基质金属蛋白酶-9在胃癌中表达及与侵袭、转移关系探讨

目的检测胃癌患者血浆基质金属蛋白酶-9在胃癌中表达及其临床意义。方法采用抗MMP-9MOAb建立了MMP-9血浆酶免疫测定法。检测血浆基质金属蛋白酶-9在胃癌中的阳性表达率及其与胃癌的病理类型、淋巴结转移、侵袭程度的关系。结果胃癌组36例,阳性率50%(18/36),对照组20例,阳性率5%(1/20),两组差异有显著性(P<0.01)。血浆基质金属蛋白酶-9与胃癌的侵袭程度、淋巴结转移密切相关(P<0.01),与胃癌的病理类型无关(P>0.05)。结论胃癌患者血浆基质金属蛋白酶-9较对照组明显增高,且与胃癌侵袭程度,淋巴结转移密切相关。血浆基质金属蛋白酶-9的检测,是对胃癌前病变监测及判断胃癌的生物学特征重要指标,对胃癌的预后评估具有重要的临床意义。     

结外鼻型NK/T细胞淋巴瘤组织中MMP-26、MMP-9、TIMP-4的表达及意义北大核心CSCD

目的通过检测结外鼻型NK/T细胞淋巴瘤(Extranodal natural-type NK/T-cell lymphoma,ENKTCL)组织中的基质金属蛋白酶-26(MMP-26)、金属蛋白酶组织抑制剂-4(TIMP-4)、基质金属蛋白酶-9(MMP-9)的表达情况,探讨它们与ENKTCL发病及侵袭性的关系。方法采用免疫组织化学SABC法检测30例ENKTCL组织中MMP-26、TIMP-4、MMP-9的表达情况,同时与20例淋巴组织反应性增生进行比较。并分析它们与ENKTCL临床病理指标的关系。结果 ENKTCL组中MMP-26、TIMP-4、MMP-9阳性表达分别为76.67%(23/30)、46.67%(14/30)和83.33%(25/30);淋巴组织反应性增生组阳性表达率为10%(2/20)、5%(1/20)、15%(3/20)。ENKTCL组MMP-26、TIMP-4、MMP-9阳性表达率与淋巴组织反应性增生组比较差异有统计学意义(P<0.05),MMP-26、MMP-9表达阳性率与临床分期相关,Ⅲ、Ⅳ期患者MMP-26、MMP-9蛋白的表达阳性率明显高于Ⅰ、Ⅱ期患者(P<0.05),而与年龄、性别无关(P>0.05);TIMP-4蛋白的表达与临床分期、年龄、性别均无关(P>0.05)。ENKTCL病理组织中MMP-26与TIMP-4表达无相关性,与MMP-9蛋白的表达呈正相关(rs=0.636,P<0.05)。结论 MMP-26、MMP-9在ENKTCL肿瘤组织中存在高表达,可能与ENKTCL的发病及高度侵袭性有关,并且可能成为鉴别恶性ENKTCL和反应性淋巴结增生的指标,有利于ENKTCL预后的评估。     

早期颅内动脉瘤夹闭术的安全性评价及对基质金属蛋白酶9水平的影响

目的 探讨早期颅内动脉瘤夹闭术治疗颅内动脉瘤的安全性及基质金属蛋白酶(MMP)-9水平变化。方法 选取2019年6月至2020年6月间上海市宝山区罗店医院收治住院治疗的84例颅内动脉瘤患者,按治疗方案不同将患者分为成观察组(42例)和对照组(42例)。对照组行血管内栓塞术,观察组行早期颅内动脉瘤夹闭术。对两组患者术前和术后的神经功能评分(NIHSS)和日常生活能力评分(BI)、术后并发症发生率进行对比分析,检测两组患者的血清MMP-9和神经元特异性烯醇化酶(NSE)水平。结果 手术前,两组患者NIHSS评分比较,差异无统计学意义(P>0.05);两组患者手术后较手术前降低,观察组低于对照组,差异均有统计学意义(均P<0.05)。手术前,两组患者BI评分比较,差异无统计学意义(P>0.05);两组患者手术后较手术前增高,观察组高于对照组,差异均有统计学意义(均P<0.05)。两组手术前MMP-9、NSE水平比较,差异无统计学意义(P>0.05)。两组手术后血清MMP-9水平较手术前降低,差异均有统计学意义(均P<0.05);手术前后血清NSE水平比较,...     

基质金属蛋白酶及其组织抑制物在子宫内膜癌中的表达

目的研究基质金属蛋白酶(MMP)-9及其组织抑制物(TIMP)-1在子宫内膜癌组织中的表达及其临床病理学意义.方法应用链霉素抗生物素蛋白-过氧化物酶免疫组织化学方法对40例子宫内膜癌组织及10例正常子宫内膜组织中MMP-9及TIMP-1蛋白及活性进行检测.结果子宫内膜癌组织中MMP-9及TIMP-1的阳性率高于正常子宫内膜,差异有显著性.组织学分级为G3的子宫内膜癌组织中MMP-9和TIMP-1的表达水平高于G2和G1,手术病理分期Ⅱ～Ⅲ期的子宫内膜癌组织中MMP-9和TIMP-1的表达水平高于Ⅰ期.结论子宫内膜癌组织中MMP-9和TIMP-1的表达随着组织学分级和手术病理分期的升高而增加.     

胰腺癌MMP-2和TIMP-2表达与预后的关系

目的:探讨胰腺癌组织基质质属蛋白酶-2(MMP-2)和基质金属蛋白酶抑制剂-2(TIMP-2)表达与肿瘤侵袭转移和预后的关系.方法:通过免疫组化方法检测35例胰腺癌病理标本和10正常胰腺标本MMP-2和TIMP-2的半定量表达情况及其与肿瘤临床病理参数和预后的关系,生存分析采用Kaplan-meier方法.结果:胰腺癌MMP-2和TIMP-2表达阳性率明显高于正常对照组,与淋巴结转移和临床分级密切相关,但与胰腺癌的分化程度无关,Kaplan-meier分析发现MMP-2和TIMP-2高表达患者的生存时间明显低于MMP 2和TIMP 2低表达患者(P<0.001).结论:胰腺癌MMP-2和TIMP-2表达与肿瘤侵袭转移和预后密切相关,有助于确定术后治疗方案.     

E-钙粘蛋白及PTEN基因编码蛋白与胃癌浸润转移

目的:观察抑癌基因PTEN蛋白和ECD在胃癌组织中的表达,探讨其与胃癌生物学行为及预后的关系。方法:以兔抗人PTEN多克隆抗体、鼠抗人ECD单克隆抗体,采用SABC免疫组化法,检测100例胃癌手术切除标本中拟测指标的表达。以χ2和Logrank检验对结果做统计学分析。结果:ECD、PTEN蛋白在非癌胃粘膜中均见表达;在胃癌组织中表达下调或缺失。ECD异常表达率为42.0%;弥漫型胃癌异常表达率(48.57%),明显高于肠型胃癌(26.67%),(P<0.05);ECD异常表达与浸润深度有关(P<0.05)。胃癌组织中PTEN蛋白缺失率为59%;弥漫型胃癌缺失率(65.71%)明显高于肠型胃癌(43.33%),(P<0.05);伴淋巴结转移的胃癌缺失率(64.47%)明显高于无淋巴结转移者(41.67%),(P<0.05);PTEN蛋白缺失的患者比阳性表达者预后差(P=0.0066)。65.85%PTEN阳性表达者同时伴ECD正常表达。结论:两种标志物与胃癌浸润转移有关,PTEN表达与胃癌患者预后密切相关。将两种指标联合检测,可作为正确判断胃癌患者预后,指导临床治疗的分子生物学指标。     

Cytologic classification of precancer and cancer of the endometrium and esophagus and of malignant lymphomas

The paper discusses cytological classifications of precancer and cancer of the endometrium, esophagus and malignant lymphomas presented by cytologists from five Soviet research institutes of oncology. The classifications were based on the data of 4400 cases in conformity with WHO histologic classifications.     

世界卫生组织骨质疏松症防治工作报告和防治建议

引 言 作为对第51号综合处理非传染性疾病预防与控制的世界卫生组织决议的反应,1998年7月WHO成立了致力于不断完善对骨质疏松预防和治疗策略的工作小组。小组成员来自世界各国致力于骨质疏松研究的知名专家。Harry K.Genant为本届主席。这一项世界范围内的骨质疏松教育计划旨在通过世界范围的研究,不断改善对骨质疏松的诊断水平和发展并完善对骨质疏松病人的合理治疗。其重点将以发展中国家为主。并为各国政府及其卫生部门和病人群体提供世界性有关骨质疏松症的总体的、完整的指导性资料。该项研究、教育计划的实施将由世界各国的骨质疏松症研究和治疗机构共同完成,并经权威学术机构、政府和非政府组织进行有针对性的回顾研究,最终由WHO审议通过。     

Schwannomas of Head and Neck and Review of Literature

Benign nerve cell tumours have been given various names like schwannoma, neurilemmoma, neurinoma, neurofibroma, spindle cell tumours etc. Extra cranial head and neck schwannomas usually present as solitary and well-demarcated lesions. The lesion can cause secondary symptoms, such as nasal obstruction, dysphasia, and hoarseness, depending upon the location of the lesion. Fine needle aspiration cytology, CT scans, and MRI may be of limited help in the diagnosis of schwannomas. The treatment is complete surgical excision of the benign tumour and postoperative histopathological examination establishes the final diagnosis.     

Quality of life and care in leukemia,myeloma and non-malignant disease. Opinions of patients and relatives,and effects of geography and time

In a questionnaire study 140 subjects answered 4200 questions in 1980 and 1986. They consisted of patients with myeloma, acute leukemia, lung carcinoma, and non-malignant disease and their relatives. In 22 additional cases the questionnaire was not answered. The results show that myeloma patients are less content with the general care than leukemia patients (P < 0.05). Similarly, relatives of deceased myeloma patients are less satisfied with the information given to them than relatives of deceased leukemia patients (P < 0.001). The information has improved with time, however, since the patients were more satisfied in 1986 than in 1980 (P < 0.001) and relatives of myeloma patients still alive were more satisfied than relatives of patients who had died earlier (P < 0.001).     

A comparative study of knowledge and awareness of colorectal and breast cancerA comparative study of knowledge and awareness of colorectal and breast cancer

Aims: To assess and compare knowledge and awareness of colorectal cancer and breast cancer in a sample of the general population. Methods: Eleven hundred visitors to six different outpatient clinics, in a University Hospital, were given a study-specific questionnaire, based on educational material from the British Association of Cancer United Patients (CancerBACUP). The questionnaire consisted of 12 statements on the incidence, presentation, detection, treatment and prognosis of colorectal and breast cancer. Results: One thousand and sixty-eight individuals returned the questionnaire. One thousand and four completed questionnaires were analysed. The mean age (SD) of respondents was 50.1 (17.2) years, and the male to female ratio was 2:3. Respondents had read more about breast than about colorectal cancer (60.3%vs 32.4%,P <0.0001, McNemar's test). The proportion of correct answers for each statement on breast cancer was higher than for answers to corresponding items on colorectal cancer. Mean overall scores (95% CI) for breast and colorectal cancer were 88.1 (86.9, 89.2) and 64.4 (62.5, 66.3) respectively, the mean difference (95% CI) being 23.7 (22.0, 25.5). Scores were higher for breast cancer irrespective of age or gender. Conclusion: There is a low level of understanding of colorectal cancer in the general population when compared to breast cancer. This highlights the importance of public education in this common cancer.     

Prospective study of fruit and vegetable consumption and incidence of colon and rectal cancers

BACKGROUND: Frequent consumption of fruit and vegetables has been associated with a reduced risk of colorectal cancer in many observational studies. METHODS: We prospectively investigated the association between fruit and vegetable consumption and the incidence of colon and rectal cancers in two large cohorts: the Nurses' Health Study (88 764 women) and the Health Professionals' Follow-up Study (47 325 men). Diet was assessed and cumulatively updated in 1980, 1984, 1986, and 1990 among women and in 1986 and 1990 among men. The incidence of cancer of the colon and rectum was ascertained up to June or January of 1996, respectively. Relative risk (RR) estimates were calculated with the use of pooled logistic regression models accounting for various potential confounders. All statistical tests were two-sided. RESULTS: With a follow-up including 1 743 645 person-years and 937 cases of colon cancer, we found little association of colon cancer incidence with fruit and vegetable consumption. For women and men combined, a difference in fruit and vegetable consumption of one additional serving per day was associated with a covariate-adjusted RR of 1.02 (95% confidence interval [CI] = 0.98-1.05). A difference in vegetable consumption of one additional serving per day was associated with an RR of 1.03 (95% CI = 0.97-1.09). Similar results were obtained for women and men considered separately. A difference in fruit consumption of one additional serving per day was associated with a covariate-adjusted RR for colon cancer of 0.96 (95% CI = 0.89-1.03) among women and 1. 08 (95% CI = 1.00-1.16) among men. For rectal cancer (total, 244 cases), a difference in fruit and vegetable consumption of one additional serving per day was associated with an RR of 1.02 (95% CI = 0.95-1.09) in men and women combined. None of these associations was modified by vitamin supplement use or smoking habits. CONCLUSIONS: Although fruits and vegetables may confer protection against some chronic diseases, their frequent consumption does not appear to confer protection from colon or rectal cancer.