Background/aims: Pseudoexfoliation syndrome (PXF) was recently found to be associated with increased expression of transforming growth factor β 1 (TGFβ 1) in the aqueous humour. As concern has been raised regarding ...Background/aims: Pseudoexfoliation syndrome (PXF) was recently found to be associated with increased expression of transforming growth factor β 1 (TGFβ 1) in the aqueous humour. As concern has been raised regarding anti-TGFβ therapy, which can potentially disrupt the maintenance of anterior chamber associated immune deviation, the authors explored the levels of tissue inhibitor ofmatrixmetalloproteinase-1 (TIMP-1),matrix metalloproteinase-9 (MMP-9), and connective tissue growth factor (CTGF) in aqueous humour to determine if these may represent alternative therapeutic targets. Methods: Aqueous humour samples were collected from patients who underwent routine cataract surgery. All patients were categorised into three main groups-PXF, uveitis, and control. The PXF group was further subcategorised into three grades based on the density of the exfoliative material observed on biomicroscopy, as well as the presence or absence of glaucoma. TIMP-1, MMP-9, and CTGF levels were measured using specific enzyme immunoassays (ELISA). Results: Eyes with PXF had significantly higher aqueous humour TIMP-1 concentration (n=56, mean (SE), 9.76 (1.10) ng/ml) compared with controls (n=112, 5.73 (0.43) ng/ml, P < 0.01). Similarly, the CTGF level in PXF eyes (n=36, 4.38 (0.65) ng/ml) was higher than controls (n=29, 2.35 (0.46) ng/ml, P< 0.05). Further, the CTGF concentration in the PXF glaucoma group is significantly higher compared with PXF eyes without glaucoma (6.03 (1.09) ng/ml v 2.73 (0.45) ng/ml, P< 0.01). The MMP-9 levels were low and below detection limit in all PXF and control samples with no statistical difference between groups. Conclusion: A raised TIMP-1 level and a low MMP-9 level in aqueous humour of PXF eyes may imply a downregulation in proteolytic activity. The increased CTGF concentration supports the proposed fibrotic pathology of PXF. Regulation of MMP/TIMP expression and anti-CTGF therapy may offer potential therapeutic avenues for controlling PXF associated ocular morbidity.展开更多
目的探讨声带癌前病变组织中基质金属蛋白酶抑制剂-1(tissue inhibitor of metalloproteinases 1,TIMP-1)、果蝇母亲DDP同源物4(drosophila mothers against DDP homolog 4,Smad4)表达水平与术后复发和恶变的相关性。方法回顾性分析2018...目的探讨声带癌前病变组织中基质金属蛋白酶抑制剂-1(tissue inhibitor of metalloproteinases 1,TIMP-1)、果蝇母亲DDP同源物4(drosophila mothers against DDP homolog 4,Smad4)表达水平与术后复发和恶变的相关性。方法回顾性分析2018年8月~2021年8月郑州大学第一附属医院收治的162例声带癌前病变患者的临床和病理资料,收集手术切除癌前病变组织(癌前病变组)及病变旁正常黏膜组织(对照组),采用免疫组织化学法检测组织中TIMP-1、Smad4表达情况。分析TIMP-1、Smad4阳性率与临床病理特征的关系,并采用Kaplan-Meier法和Cox回归分析法分析其对术后复发和恶变的影响。结果与对照组正常黏膜组织比较,癌前病变组的TIMP-1阳性率较高,Smad4阳性率较低(P<0.05)。不同病变范围、是否累及前连合、不同程度上皮异常增生患者的TIMP-1、Smad4阳性率存在差异(P<0.05)。术后随访时间24~60个月,中位随访时间36个月,随访期间失访患者6例,随访率96.30%(156/162),随访期间术后复发35例(21.60%),术后恶变16例(9.88%);Kaplan-Meier生存分析显示,TIMP-1阳性患者术后复发率和恶变率高于TIMP-1阴性患者(P<0.05);Smad4阴性患者术后复发率和恶变率高于Smad4阳性患者(P<0.05)。多因素Cox回归分析显示,喉咽反流、病变范围>1/2、中/重度异型增生、TIMP-1阳性、Smad4阴性是复发的独立危险因素(P<0.05),年龄>60岁、累及前连合、TIMP-1阳性、Smad4阴性是恶变的独立危险因素(P<0.05)。结论声带癌前病变组织中TIMP-1高表达、Smad4低表达,且TIMP-1阳性、Smad4阴性表达者术后复发和恶变风险较高。展开更多
目的探讨血浆基质金属蛋白酶抑制剂-1(tissue inhibitor of metalloproteinases-1,TIMP-1)对阿尔茨海默病(Alzheimer’s disease,AD)的临床诊断价值。方法选取首都医科大学宣武医院2019年1月1日至2022年12月30日收治的AD患者和健康老年...目的探讨血浆基质金属蛋白酶抑制剂-1(tissue inhibitor of metalloproteinases-1,TIMP-1)对阿尔茨海默病(Alzheimer’s disease,AD)的临床诊断价值。方法选取首都医科大学宣武医院2019年1月1日至2022年12月30日收治的AD患者和健康老年人143例,其中72例AD患者为AD组,以71例健康老年人为对照组,使用酶联免疫吸附法(enzyme linked immunosorbent assay,ELISA)检测脑脊液中磷酸化tau蛋白(phosphorylated tau protein,P-tau)和β-淀粉样蛋白42(β-amyloid protein 42,Aβ42)水平作为纳入AD患者的依据之一,采用Luminex液相芯片分析技术检测血浆中TIMP-1的表达水平。分别对AD患者和对照组的一般资料及血浆TIMP-1水平进行比较。Spearman相关性分析评估血浆TIMP-1水平与MMSE评分相关性。运用受试者操作特征(receiver operating characteristic,ROC)曲线评估TIMP-1单独及联合载脂蛋白Eε4状态诊断AD的价值。结果AD患者血浆中TIMP-1水平明显低于对照组(P<0.0001);血浆TIMP-1水平与简易精神状态检查量表评分呈正相关(rho=0.530,P<0.0001);ROC曲线结果表明,使用血浆TIMP-1表达水平单独或联合载脂蛋白Eε4状态诊断AD的曲线下面积分别为0.875和0.898。结论血浆TIMP-1可作为一种生物标志物,在AD的诊断中起到一定的作用。展开更多
文摘Background/aims: Pseudoexfoliation syndrome (PXF) was recently found to be associated with increased expression of transforming growth factor β 1 (TGFβ 1) in the aqueous humour. As concern has been raised regarding anti-TGFβ therapy, which can potentially disrupt the maintenance of anterior chamber associated immune deviation, the authors explored the levels of tissue inhibitor ofmatrixmetalloproteinase-1 (TIMP-1),matrix metalloproteinase-9 (MMP-9), and connective tissue growth factor (CTGF) in aqueous humour to determine if these may represent alternative therapeutic targets. Methods: Aqueous humour samples were collected from patients who underwent routine cataract surgery. All patients were categorised into three main groups-PXF, uveitis, and control. The PXF group was further subcategorised into three grades based on the density of the exfoliative material observed on biomicroscopy, as well as the presence or absence of glaucoma. TIMP-1, MMP-9, and CTGF levels were measured using specific enzyme immunoassays (ELISA). Results: Eyes with PXF had significantly higher aqueous humour TIMP-1 concentration (n=56, mean (SE), 9.76 (1.10) ng/ml) compared with controls (n=112, 5.73 (0.43) ng/ml, P < 0.01). Similarly, the CTGF level in PXF eyes (n=36, 4.38 (0.65) ng/ml) was higher than controls (n=29, 2.35 (0.46) ng/ml, P< 0.05). Further, the CTGF concentration in the PXF glaucoma group is significantly higher compared with PXF eyes without glaucoma (6.03 (1.09) ng/ml v 2.73 (0.45) ng/ml, P< 0.01). The MMP-9 levels were low and below detection limit in all PXF and control samples with no statistical difference between groups. Conclusion: A raised TIMP-1 level and a low MMP-9 level in aqueous humour of PXF eyes may imply a downregulation in proteolytic activity. The increased CTGF concentration supports the proposed fibrotic pathology of PXF. Regulation of MMP/TIMP expression and anti-CTGF therapy may offer potential therapeutic avenues for controlling PXF associated ocular morbidity.
文摘目的探讨声带癌前病变组织中基质金属蛋白酶抑制剂-1(tissue inhibitor of metalloproteinases 1,TIMP-1)、果蝇母亲DDP同源物4(drosophila mothers against DDP homolog 4,Smad4)表达水平与术后复发和恶变的相关性。方法回顾性分析2018年8月~2021年8月郑州大学第一附属医院收治的162例声带癌前病变患者的临床和病理资料,收集手术切除癌前病变组织(癌前病变组)及病变旁正常黏膜组织(对照组),采用免疫组织化学法检测组织中TIMP-1、Smad4表达情况。分析TIMP-1、Smad4阳性率与临床病理特征的关系,并采用Kaplan-Meier法和Cox回归分析法分析其对术后复发和恶变的影响。结果与对照组正常黏膜组织比较,癌前病变组的TIMP-1阳性率较高,Smad4阳性率较低(P<0.05)。不同病变范围、是否累及前连合、不同程度上皮异常增生患者的TIMP-1、Smad4阳性率存在差异(P<0.05)。术后随访时间24~60个月,中位随访时间36个月,随访期间失访患者6例,随访率96.30%(156/162),随访期间术后复发35例(21.60%),术后恶变16例(9.88%);Kaplan-Meier生存分析显示,TIMP-1阳性患者术后复发率和恶变率高于TIMP-1阴性患者(P<0.05);Smad4阴性患者术后复发率和恶变率高于Smad4阳性患者(P<0.05)。多因素Cox回归分析显示,喉咽反流、病变范围>1/2、中/重度异型增生、TIMP-1阳性、Smad4阴性是复发的独立危险因素(P<0.05),年龄>60岁、累及前连合、TIMP-1阳性、Smad4阴性是恶变的独立危险因素(P<0.05)。结论声带癌前病变组织中TIMP-1高表达、Smad4低表达,且TIMP-1阳性、Smad4阴性表达者术后复发和恶变风险较高。
文摘目的探讨血浆基质金属蛋白酶抑制剂-1(tissue inhibitor of metalloproteinases-1,TIMP-1)对阿尔茨海默病(Alzheimer’s disease,AD)的临床诊断价值。方法选取首都医科大学宣武医院2019年1月1日至2022年12月30日收治的AD患者和健康老年人143例,其中72例AD患者为AD组,以71例健康老年人为对照组,使用酶联免疫吸附法(enzyme linked immunosorbent assay,ELISA)检测脑脊液中磷酸化tau蛋白(phosphorylated tau protein,P-tau)和β-淀粉样蛋白42(β-amyloid protein 42,Aβ42)水平作为纳入AD患者的依据之一,采用Luminex液相芯片分析技术检测血浆中TIMP-1的表达水平。分别对AD患者和对照组的一般资料及血浆TIMP-1水平进行比较。Spearman相关性分析评估血浆TIMP-1水平与MMSE评分相关性。运用受试者操作特征(receiver operating characteristic,ROC)曲线评估TIMP-1单独及联合载脂蛋白Eε4状态诊断AD的价值。结果AD患者血浆中TIMP-1水平明显低于对照组(P<0.0001);血浆TIMP-1水平与简易精神状态检查量表评分呈正相关(rho=0.530,P<0.0001);ROC曲线结果表明,使用血浆TIMP-1表达水平单独或联合载脂蛋白Eε4状态诊断AD的曲线下面积分别为0.875和0.898。结论血浆TIMP-1可作为一种生物标志物,在AD的诊断中起到一定的作用。
