Long noncoding RNAs HAND2-AS1 ultrasound microbubbles suppress hepatocellular carcinoma progression by regulating the miR-873-5p/tissue inhibitor of matrix metalloproteinase-2 axis

BACKGROUND Increasing data indicated that long noncoding RNAs(lncRNAs)were directly or indirectly involved in the occurrence and development of tumors,including hepatocellular carcinoma(HCC).Recent studies had found that the expression of lncRNA HAND2-AS1 was downregulated in HCC tissues,but its role in HCC progression is unclear.Ultrasound targeted microbubble destruction mediated gene transfection is a new method to overexpress genes.AIM To study the role of ultrasound microbubbles(UTMBs)mediated HAND2-AS1 in the progression of HCC,in order to provide a new reference for the treatment of HCC.METHODS In vitro,we transfected HAND2-AS1 siRNA into HepG2 cells by UTMBs,and detected cell proliferation,apoptosis,invasion and epithelial-mesenchymal transition(EMT)by cell counting kit-8 assay,flow cytometry,Transwell invasion assay and Western blotting,respectively.In addition,we transfected miR-837-5p mimic into UTMBs treated cells and observed the changes of cell behavior.Next,the UTMBs treated HepG2 cells were transfected together with miR-837-5p mimic and tissue inhibitor of matrix metalloproteinase-2(TIMP2)overexpression vector,and we detected cell proliferation,apoptosis,invasion and EMT.In vivo,we established a mouse model of subcutaneous transplantation of HepG2 cells and observed the effect of HAND2-AS1 silencing on tumor formation ability.RESULTS We found that UTMBs carrying HAND2-AS1 restricted cell proliferation,invasion,and EMT,encouraged apoptosis,and HAND2-AS1 silencing eliminated the effect of UTMBs.Additionally,miR-873-5p targets the gene HAND2-AS1,which also targets the 3’UTR of TIMP2.And miR-873-5p mimic counteracted the impact of HAND2-AS1.Further,miR-873-5p mimic solely or in combination with pcDNA-TIMP2 had been transformed into HepG2 cells exposed to UTMBs.We discovered that TIMP2 reversed the effect of miR-873-5p mimic caused by the blocked signalling cascade for matrix metalloproteinase(MMP)2/MMP9.In vivo results showed that HAND2-AS1 silencing significantly inhibited tumor formation in mice.CONCLUSION LncRNA HAND2-AS1 promotes TIMP2 expression by targeting miR-873-5p to inhibit HepG2 cell growth and delay HCC progression.

替吉奥联合奥沙利铂对老年胃癌患者胃动力相关激素及基质金属蛋白酶-2、基质金属蛋白酶-9的影响

目的探讨替吉奥联合奥沙利铂对老年胃癌患者胃动力相关激素及基质金属蛋白酶-2(MMP-2)、基质金属蛋白酶-9(MMP-9)的影响。方法选取128例老年胃癌患者为研究对象,随机分成对照组(n=64)与观察组(n=64)。对照组给予替吉奥治疗,观察组给予替吉奥联合奥沙利铂治疗。观察2组的胃动力相关激素[胃动素(MTL)、血管活性肠肽(VIP)]、MMP-2与MMP-9、肿瘤标志物[癌胚抗原(CEA)、糖类抗原125(CA125)、糖类抗原19-9(CA19-9)]、临床疗效以及不良反应发生情况。分析胃动力相关激素与MMP-2、MMP-9及肿瘤标记物水平的相关性。结果治疗后,2组MTL低于治疗前,VIP高于治疗前,且观察组MTL低于对照组,VIP高于对照组,差异有统计学意义(P<0.05)。治疗后,2组MMP-2、MMP-9及CEA、CA125、CA19-9低于治疗前,且观察组低于对照组,差异有统计学意义(P<0.05)。观察组总有效率为70.31%,高于对照组的53.13%,差异有统计学意义(P<0.05)。2组不良反应发生率比较,差异无统计学意义(P>0.05)。MTL与MMP-2、MMP-9、CEA、CA125、CA19-9呈负相关(P<0.05);VIP与MMP-2、MMP-9、CEA、CA125、CA19-9呈正相关(P<0.05)。结论替吉奥联合奥沙利铂治疗老年胃癌患者的效果较好,且安全性较高。MTL、VIP与MMP-2、MMP-9及CEA、CA125、CA19-9在老年胃癌患者的疾病发展中起相互关联作用。

输卵管阻塞性不孕患者血清TGF-β1、IL-2、MMP-9水平及临床意义

目的:分析输卵管阻塞性不孕患者血清转化生长因子-β1(TGF-β1)、白细胞介素-2(IL-2)、基质金属蛋白酶-9(MMP-9)水平变化及临床意义。方法:以本院2022年3月-2023年10月诊治的60例输卵管阻塞性不孕患者为病例组,正常妊娠分娩的女性50例为对照组。测定对比两组血清TGF-β1、IL-2、MMP-9水平,Pearson相关性分析血清指标间相关性,受试者工作特征(ROC)曲线分析血清指标诊断不孕效能,logistic多因素回归分析输卵管阻塞性不孕发生影响因素。结果:病例组术前血清TGF-β1(593.79±148.23 ng/L)、IL-2(3.90±0.75 ng/L)、MMP-9(384.88±86.87 ng/ml)水平均高于对照组(239.42±113.37 ng/L、3.09±0.84 ng/L、178.98±80.85 ng/ml),术后血清TGF-β1、IL-2、MMP-9水平较术前均下降,血清TGF-β1与IL-2、MMP-9,及IL-2与MMP-9均呈正相关(均P<0.05)。ROC曲线分析,诊断不孕TGF-β1曲线下面积(AUC)0.941、敏感度88.3%、特异度94.0%,IL-2 AUC 0.778、敏感度66.7%、特异度84.0%,MMP-9 AUC 0.946、敏感度88.3%、特异度86.0%,3指标联合诊断AUC为0.992,敏感度93.3%、特异度100.0%。logistic回归分析,血清TGF-β1、IL-2、MMP-9异常升高是输卵管阻塞性不孕发发生的危险因素(均P<0.05)。结论:输卵管阻塞性不孕患者血清TGF-β1、IL-2、MMP-9水平均高表达,且是不孕发生的危险因素,3者联合检测对输卵管阻塞性不孕有较高诊断价值。

3.0T HR-MRI联合血清MMP9、AGR2对宫颈癌FIGO分期诊断价值

目的:探讨3.0T高分辨磁共振成像(HR-MRI)联合血清基质金属蛋白9(MMP9)、前梯度蛋白2(AGR2)诊断宫颈癌FIGO分期价值。方法:选取2016年3月-2022年10月本院诊疗的122例宫颈癌患者临床资料,依据FIGO分期系统分为Ⅰ~Ⅱ期64例、Ⅲ~Ⅳ期58例,均行3.0T HR-MRI检查,并采用酶联免疫吸附法检测血清MMP9、AGR2水平。采用一致性Kappa检验分析HR-MRI单独及联合血清MMP9、AGR2与术后病理结果的一致性,并绘制受试者工作特征(ROC)曲线分析各指标诊断宫颈癌FIGO分期效能;结果:FIGO分期Ⅲ~Ⅳ期宫颈癌患者血清MMP9、AGR2水平高于Ⅰ~Ⅱ期患者(P<0.05)。血清MMP9、AGR2诊断宫颈癌Ⅰ~Ⅱ期与Ⅲ~Ⅳ期的曲线下面积(AUC)分别为0.789(95%CI0.708-0.869)、0.836(95%CI0.765-0.906),特异度分别为76.6%、73.4%,敏感度分别为72.4%、81.3%,截断值分别为178.83ng/ml、13.18ng/ml。HR-MRI检查与术后病理结果一致性较高,Kappa值为0.739,HR-MRI联合血清MMP9、AGR2检查与术后病理结果一致性极高,Kappa值为0.868(均P<0.05)。HR-MRI联合血清MMP9、AGR2诊断宫颈癌患者FIGO分期的特异度(95.3%)、阳性预测值(94.6%)显著高于各单独指标诊断,敏感度(91.4%)、阴性预测值(92.4%)高于血清MMP9,准确度(93.4%)高于血清MMP9、AGR2(P<0.05)。结论:3.0T HR-MRI联合血清MMP9、AGR2对宫颈癌FIGO分期的诊断价值较高。

2型糖尿病患者血清巨噬细胞炎症蛋白1α和基质金属蛋白酶9水平与甲状腺结节的相关性研究

目的探讨2型糖尿病(T_(2)DM)患者血清巨噬细胞炎症蛋白1α(MIP-1α)、基质金属蛋白酶9(MMP-9)水平与甲状腺结节的相关性。方法回顾性选取2021年10月至2023年3月于河北医科大学第三医院就诊的T_(2)DM患者154例,根据患者是否合并甲状腺结节分为甲状腺结节组(83例)和无甲状腺结节组(71例)。比较2组甲状腺功能、血糖、血脂、MIP-1α、MMP-9等指标。采用Logistic回归模型分析影响T_(2)DM患者出现甲状腺结节的因素;采用Pearson相关性检验分析T_(2)DM患者血清MIP-1α、MMP-9水平与其他因素的相关性;绘制受试者工作特征曲线分析血清MIP-1α、MMP-9水平对T_(2)DM患者出现甲状腺结节的预测价值。结果甲状腺结节组促甲状腺激素(TSH)、总三碘甲状腺原氨酸(TT_(3))、总甲状腺素(TT_(4))、稳态模型胰岛素抵抗指数(HOMA-IR)、稳态模型胰岛β细胞功能指数、空腹血糖、空腹胰岛素水平均高于无甲状腺结节组,胰岛素敏感指数(ISI)低于无甲状腺结节组(均P<0.05)。甲状腺结节组血清MIP-1α、MMP-9水平均高于无甲状腺结节组[(29±5)ng/L比(25±5)ng/L、(2.0±0.5)ng/L比(1.4±0.5)ng/L](均P<0.001)。Logistic回归分析结果显示,MIP-1α、MMP-9、TSH、TT_(3)、TT_(4)、空腹胰岛素、HOMA-IR和ISI均为T_(2)DM患者出现甲状腺结节的危险因素(均P<0.05)。Pearson相关性分析结果表明,T_(2)DM患者血清MIP-1α与MMP-9水平呈正相关(r=0.362,P<0.001)。血清MIP-1α、MMP-9水平与空腹胰岛素、TSH、HOMA-IR、TT_(3)、TT_(4)均呈正相关,与ISI呈负相关(均P<0.001)。MIP-1α、MMP-9水平联合检测预测T_(2)DM患者出现甲状腺结节的曲线下面积大于MIP-1α、MMP-9单独检测(均P<0.05)。结论血清MIP-1α、MMP-9水平与T_(2)DM患者出现甲状腺结节具有密切关系,对预测T_(2)DM患者甲状腺结节具有重要价值。

生殖道感染对足月和未足月胎膜早破孕妇宫颈分泌液MMP-2、MMP-9表达及不良母婴结局的影响

目的分析生殖道感染对足月和未足月胎膜早破(PROM)孕妇基质金属蛋白酶-2(MMP-2)、基质金属蛋白酶-9(MMP-9)表达及不良母婴结局的影响。方法招募2021年6月至2023年6月就诊于湖北医药学院附属十堰市太和医院的110例PROM孕妇作为研究对象。根据生殖道感染情况和孕周将其分为未足月胎膜早破(pPROM)感染组(34例)、pPROM非感染组(26例)、足月胎膜早破(tPROM)感染组(34例)、tPROM非感染组(16例)。比较四组一般资料、宫颈分泌液MMP-2和MMP-9表达水平以及不良母婴结局发生情况,采用多因素logistic回归分析PROM孕妇发生不良母婴结局的影响因素。结果四组年龄、孕次、体质量指数、吸烟史、饮酒史比较差异无统计学意义(P>0.05)。四组宫颈分泌液MMP-2、MMP-9表达水平比较差异有统计学意义(P<0.05),其中pPROM感染组宫颈分泌液MMP-2、MMP-9表达水平高于pPROM非感染组和tPROM非感染组,tPROM感染组宫颈分泌液MMP-2、MMP-9表达水平高于tPROM非感染组,差异有统计学意义(P<0.05)。四组绒毛膜羊膜炎及不良母婴结局总发生率比较差异有统计学意义(P<0.05),其中pPROM感染组绒毛膜羊膜炎发生率高于tPROM感染组和tPROM非感染组,不良母婴结局总发生率高于pPROM非感染组和tPROM非感染组,差异有统计学意义(P<0.05)。多因素logistic回归分析结果显示,生殖道感染及较高的宫颈分泌液MMP-2、MMP-9表达水平是PROM孕妇发生不良母婴结局的独立危险因素(P<0.05)。结论生殖道感染可增加足月和未足月PROM孕妇宫颈分泌液MMP-2、MMP-9表达水平,生殖道感染及较高的宫颈分泌液MMP-2、MMP-9表达水平是PROM孕妇发生不良母婴结局的独立危险因素。

A matrix metalloproteinase-responsive hydrogel system controls angiogenic peptide release for repair of cerebral ischemia/reperfusion injury

Vascular endothelial growth factor and its mimic peptide KLTWQELYQLKYKGI(QK)are widely used as the most potent angiogenic factors for the treatment of multiple ischemic diseases.However,conventional topical drug delivery often results in a burst release of the drug,leading to transient retention(inefficacy)and undesirable diffusion(toxicity)in vivo.Therefore,a drug delivery system that responds to changes in the microenvironment of tissue regeneration and controls vascular endothelial growth factor release is crucial to improve the treatment of ischemic stroke.Matrix metalloproteinase-2(MMP-2)is gradually upregulated after cerebral ischemia.Herein,vascular endothelial growth factor mimic peptide QK was self-assembled with MMP-2-cleaved peptide PLGLAG(TIMP)and customizable peptide amphiphilic(PA)molecules to construct nanofiber hydrogel PA-TIMP-QK.PA-TIMP-QK was found to control the delivery of QK by MMP-2 upregulation after cerebral ischemia/reperfusion and had a similar biological activity with vascular endothelial growth factor in vitro.The results indicated that PA-TIMP-QK promoted neuronal survival,restored local blood circulation,reduced blood-brain barrier permeability,and restored motor function.These findings suggest that the self-assembling nanofiber hydrogel PA-TIMP-QK may provide an intelligent drug delivery system that responds to the microenvironment and promotes regeneration and repair after cerebral ischemia/reperfusion injury.

老年2型糖尿病患者血清微小RNA-125a-3p和基质金属蛋白酶9水平与颈动脉粥样硬化的关系

目的 探讨老年2型糖尿病(T2DM)患者血清微小RNA-125a-3p(miR-125a-3p)、基质金属蛋白酶9(MMP-9)水平与颈动脉粥样硬化(CAS)的关系。方法 选取2020年4月至2023年5月内蒙古自治区人民医院收治的200例老年T2DM患者(T2DM组),根据颈动脉内中膜厚度(CIMT)分为CAS亚组和非CAS亚组,另选取同期45例老年体检健康者为对照组。收集T2DM患者临床资料,检测研究对象血清miR-125a-3p、MMP-9水平。分析T2DM患者血清miR-125a-3p、MMP-9水平与CIMT、空腹血糖、糖化血红蛋白(HbA1c)、甘油三酯、低密度脂蛋白胆固醇(LDL-C)的相关性,多因素Logistic回归分析T2DM患者CAS的影响因素,受试者工作特征(ROC)曲线分析血清miR-125a-3p、MMP-9对T2DM患者CAS的预测价值。结果 T2DM组血清miR-125a-3p、MMP-9水平均高于对照组[(1.58±0.30)比(1.09±0.22)、(24±8)μg/L比(14±5)μg/L](均P<0.001)。200例T2DM患者中137例CIMT≥1.0 mm, CAS发生率为68.5%(137/200)。CAS亚组miR-125a-3p、MMP-9水平均高于非CAS亚组(均P<0.05)。T2DM患者血清miR-125a-3p与MMP-9水平呈正相关(r=0.778,P<0.001),二者与CIMT、空腹血糖、HbA1c、甘油三酯、LDL-C均呈正相关(均P<0.001)。多因素Logistic回归分析结果显示,血脂异常、病程延长和HbA1c、LDL-C、miR-125a-3p、MMP-9升高为T2DM患者CAS的独立危险因素(均P<0.05)。ROC曲线分析结果显示,血清miR-125a-3p、MMP-9联合预测老年T2DM患者CAS的曲线下面积大于二者单独预测(0.864比0.799、0.796)。结论 老年T2DM患者血清miR-125a-3p、MMP-9水平升高与CAS密切相关,可能成为T2DM患者CAS的辅助预测指标。

湿润烧伤膏对糖尿病足创面组织中MMP-2、MMP-9、Bcl-2、Bax水平的影响

目的探讨湿润烧伤膏(MEBO)对糖尿病足创面组织中基质金属蛋白酶(MMP)-2、MMP-9、B细胞淋巴瘤-2(Bcl-2)、Bcl-2相关X蛋白(Bax)水平的影响。方法选取2020年5月至2022年5月郑州大学附属郑州中心医院收治的55例糖尿病足患者作为研究对象,按照不同治疗方法将其分为MEBO组(35例)和VSD组(20例),MEBO组患者局部创面采用MEBO治疗,VSD组患者局部创面采用负压封闭引流(VSD)治疗,对比观察两组患者创面面积,创面组织中MMP-2、MMP-9、Bcl-2、Bax水平及临床疗效。结果治疗第7、21天,MEBO组患者创面面积均明显小于VSD组(t=2.719、5.268,P=0.009、P<0.001),创面组织中MMP-2、MMP-9、Bax水平均明显低于VSD组(MMP-2:t=2.138、2.202,P=0.037、0.032;MMP-9:t=2.129、2.476,P=0.038、0.017;Bax:t=3.623、3.038,P=0.001、0.004),Bcl-2水平均明显高于VSD组(t=2.040、3.054,P=0.046、0.004);治疗21 d后,MEBO组患者中显效23例、有效10例、无效2例,明显优于VSD组患者的显效8例、有效7例、无效5例(Z=-2.126,P=0.033)。结论MEBO可通过降低糖尿病足创面组织中MMP-2、MMP-9、Bax水平以及提高Bcl-2水平促进创面愈合。

Matrix metalloproteinase-9-1562C>T polymorphism may increase the risk of lymphatic metastasis of colorectal cancer

AIM. To explore the role of the matrix metalloproteinase-9 （MMP-9） polymorphism in colorectal cancer （CRC） in a northeast Chinese population.METHODS： Genotyping of MNP-9-1562C〉T and 279R〉Q polymorphisms was carried out on blood samples from 137 colorectal cancer patients and 199 controls using polymerase chain reaction-restriction fragment length polymorphism （PCR-RFLP）. Multivariate logistic regression models were used to calculate adjusted odds ratios （OR） and 95% confidence intervals （95% CI）.RESULTS： The distribution of IVllVlP-9 -2562C〉T and 279 R〉Q genotype was not significantly associated with the risk of CRC. However, the risk of Ilymph node metastasis of CRC was increased in patients with the -1562T allele （OR = 2.601; 95% CI = 1.160-5.835; P = 0.022）. The frequency of MMP-9 279RR ＋ RQ genotype was higher than the QQ genotype among CRC patients younger than sixty years old （OR = 0.102, 95% CI = 0.013-0.812; P = 0.012）.CONCLUSION： Our results indicated that the MMP-9- 1562C〉T polymorphism affects lymph node metastasis of CRC. In addition, the MMP-9 279R allele may lead to a younger age of onset of colorectal cancer.

Expressions of cyclooxygenase-2 and matrix metalloproteinase-9 in cervical carcinoma and their clinical significance

Objective: To investigate the expressions of cyclooxygenase (COX)-2 and matrix metalloproteinase (MMP)-9 in cervical carcinoma and their clinical significance. Methods: Immunohistochemistry SP method was used to detect the expres- sions of COX-2 and MMP-9 in 72 cases of invasive carcinoma of cervix (ICC) and 16 cases of normal cervical epithelium remote from tumor (NCE). The relationships between the expressions of COX-2, MMP-9 in ICC and some characteristics relating to clinical pathology of cervical carcinoma such as histological grading, lymph node metastasis, stromal invasion and FIGO stage were analyzed statistically. Results: The rates of the positive expressions of COX-2 and MMP-9 in ICC were significantly higher than those in NCE. COX-2: 88.9% (64/72) in group ICC and 12.5% (2/16) in group NCE, P = 0.000; MMP-9: 94.4% (68/72) in group ICC and 43.8% (7/16) in group NCE, P = 0.000. The expression of COX-2 was positively correlated with lymph node metastasis (r = 0.296, P = 0.012) and stromal invasion (r = 0.257, P = 0.029). The expression of MMP-9 was positively correlated with FIGO stage (r = 0.329, P = 0.005) and histological grading (r = 0.351, P = 0.003). The expression of COX-2 was positively correlated with the expression of MMP-9 in ICC (r = 0.297, P = 0.011). Conclusion: The overexpressions of COX-2 and MMP-9 were closely related to the invasion and growth of cervical carcinoma. The tissue with the overexpression of COX-2 had strong invasion ability. COX-2 and MMP-9 had synergistic effect on proliferation, invasion and metastasis of cancer cells. Detecting the coexpression of COX-2 and MMP-9 may be of value in further understanding the biological behavior and predicting the prognosis of cervical carcinoma.

Methanol extract of Codium fragile inhibits tumor necrosis factor-ɑ-induced matrix metalloproteinase-9 and invasiveness of MDA-MB-231 cells by suppressing nuclear factor-κB activation

Objective:To evaluate whether the methanol extract of Codium fragile(MECF) regulates tumor necrosis factor-α(TNF-α)-induced invasion of human breast cancer MDA-MB-231 cells by suppressing matrix metalloproteinase-9(MMP-9).Methods:Reverse transcriptionpolymerase chain reaction(RT-PCR) and western blot analysis were performed to analyze the expression of MMP-9 and nuclear factor-κB(NF-κB) subunits,p65 and p50,and IκB in MDA-MB-231 cells.3-(4,5-Dimethyl-2-thiazolyl)-2,5-diphenyl-2H-tetrazolium bromide(MTT) assay was used for cell viability.MMP-9 activity and invasion were measured by gelatin zymography and a matrigel invasion assay,respectively.NF- κB activity was measured by an electrophoretic mobility shift assay and luciferase activity.Results:MECF had no effects on cell viability up to a concentration of 100 μg/mL in human breast cancer MDA-MB-231 cells regardless of the presence of TNF-α.MDA-MB-231 cells that were stimulated with TNF-α showed a marked increase of invasion compared to the untreated control,whereas pretreatment with MECF downregulated the TNF-α-induced invasion of MDA-MB-231 cells.Additionally,zymography,western blot analysis,and reverse transcriptase-polymerase chain reaction(RT-PCR) confirmed that MECF decreased TNF-α-induced MMP-9 expression and activity which is a key regulator for cancer invasion.According to an electrophoretic morbidity shift assay,pretreatment with MECF in MDA-MB-231 cells significantly decreased the TNF-α-induced DNA-binding activity of nuclear factor- κB(NF- κB),which is an important transcription factor for regulating cancer invasion-related genes such as MMP-9.Furthermore,treatment with MECF sustained the expression of p65 and p50 in response to TNF-α in the cytosolic compartment.The luciferase assay demonstrated that MECF attenuated TNF-α-induced NF- κB luciferase activity.Conclusion:MECF exhibited its antiinvasive capability by downregulating TNF-α-induced MMP-9 expression,resulting from the suppression of NF- κB activity in the human breast cancer cell line MDA-MB-231.

Immunohistochemical Studies of the Expression of Matrix Metalloproteinase-2 and Metalloproteinase-9 in Human Prostate Cancer

To study the expression of matrix metalloproteinase 2 and 9 in human prostate cancer, matrix metalloproteinase 2 and 9 were immunohistochemically detected in tissues of prostate cancer and benign prostatic hyperplasia (BPH). Our results showed that matrix metalloproteinase 2 and 9 levels in prostate cancer were much higher than those in tissues of BPH, with the cancer invasion being positively correlated with the expression of the metalloproteinases. It is concluded that matrix metalloproteinase 2 and 9 are better molecular markers, which are of help in the diagnosis and prediction of prognosis of prostate cancer.

Study on matrix metalloproteinase-2, 9 in peri-implant sulcular fluid

Objective: To study the expression of matrix metalloproteinases-2, 9 (MMP-2, MMP-9) of healthy implant and peri-implant sulcular fluid (PISF) by enzyme-linked immunosorbent assay (ELISA) method, and evaluate the level of MMP-2 and MMP-9 in sulcular fluid as an objective indicator of tissue inflammation around implants. Methods: A total of 40 implants were selected from 30 patients who were treated with dental implants and were divided into two groups: the inflammatory group and the healthy control group with 20 pieces respectively. ELISA double antibody sandwich method was used to detect the levels of MMP-2 and MMP-9 in PISF. Results: The MMP-2 and MMP-9 expressions were significantly different between the healthy implant group and the peri-implant group (p < .05). The concentration of MMP-2, MMP-9, and the amount of sulcular fluid in the inflammatory implant group were positively correlated with the clinical parameters (probing depth [PD], modified sulcus bleeding index [mSBI]). Conclusions: Under physiological conditions, the levels of MMP-2 and MMP-9 were low. When the periodontal tissue was stimulated by inflammation, the expression levels of MMP-2 and MMP-9 were increased, which could reflect the severity of inflammation. The increase levels of MMP-2 and MMP-9 in PISF could better reflect the health status of peri-implant tissues, which could be used as an objective indicator to assist in the diagnosis of peri-implant inflammation.

补肾益肺解毒方联合化疗治疗非小细胞肺癌疗效及对血清基质金属蛋白酶-2和基质金属蛋白酶-9表达的影响

目的探讨补肾益肺解毒方联合化疗治疗非小细胞肺癌的疗效及对血清基质金属蛋白酶-2(MMP-2)、基质金属蛋白酶9-(MMP-9)表达的影响。方法选取2018年2月至2020年5月于上海中医药大学附属龙华医院就诊的80例非小细胞肺癌患者作为研究对象,按随机数字表法分为对照组与研究组,每组40例。对照组给予吉西他滨和白蛋白紫杉醇(GP)化疗,研究组在对照组基础上增加补肾益肺解毒方治疗,比较两组治疗前后血清MMP-2及MMP-9水平和中医证候疗效。结果治疗前,两组血清MMP-2、MMP-9水平比较差异无统计学意义;治疗后,研究组MMP-2、MMP-9水平均低于对照组,差异有统计学意义(P<0.05)。研究组中医证候总有效率(82.5%)高于对照组(62.5%),差异有统计学意义(P<0.05)。结论补肾益肺解毒方联合化疗治疗非小细胞肺癌疗效确切,可有效改善患者血清MMP-2、MMP-9表达,提高中医证候疗效,值得临床推广应用。

粪便基质金属蛋白酶9及其相关蛋白在婴儿食物过敏中的诊断价值

目的探索基质金属蛋白酶9(MMP9)及其相关蛋白在婴儿食物过敏(FA)中的诊断价值。方法本研究为巢式病例对照研究,连续纳入2023年4月至2023年10月疑诊FA的婴儿,收集粪便,经口服食物激发试验将入组婴儿分为FA组和非FA组。通过酶联免疫吸附测定法测定粪便MMP9、基质金属蛋白酶组织抑制剂1(TIMP 1)和脂质运载蛋白2(LCN 2)的浓度,通过对比粪便总蛋白浓度计算其相对含量,通过受试者工作曲线的曲线下面积(AUC)、灵敏度、特异度等指标评价目标蛋白诊断婴儿FA的准确度。二元logistic回归筛选FA预测因子。结果共纳入FA组69例及非FA组72例。粪便MMP9及TIMP 1浓度诊断FA的AUC值分别为0.82和0.78,MMP9及TIMP 1相对含量的AUC值分别增加至0.85及0.83。LCN 2诊断价值不佳。多因素logistic回归提示粪便MMP 9是FA的最佳预测指标。结论粪便MMP 9和TIMP 1是诊断婴儿FA的有用工具,可以很好的区分FA及类似疾病。

点阵CO_(2)激光联合A型肉毒毒素治疗HS的临床疗效及对患者血清TNF-α、TGF-β_(1)和MMP-9水平的影响

目的:观察点阵CO_(2)激光联合A型肉毒毒素(Botulinum toxin A,BTXA)治疗增生性瘢痕(Hypertrophics cars,HS)的临床疗效及其对患者血清肿瘤坏死因子-α(Tumor necrosis factor-α,TNF-α)、转化生长因子β_(1)蛋白(Transforming growth factor-β_(1)protein,TGF-β_(1))和基质金属蛋白酶9(Matrix metalloproteinase 9,MMP-9)水平的影响。方法:选取2019年2月-2020年3月本院收治的HS患者50例,按照随机数表法将其分为对照组和观察组,各25例。对照组接受点阵CO_(2)激光治疗,观察组接受点阵CO_(2)激光联合BTXA治疗。观察两组患者治疗前后温哥华瘢痕量表(Vancouver scar scale,VSS)评分、视觉模拟评分(Visual analogue scale,VAS)、数字评分法(Numeric rating scales,NRS)、瘢痕面积、瘢痕厚度以及血清TNF-α、TGF-β_(1)、MMP-9水平变化,并记录不良反应发生情况,比较不良反应总发生率。结果:治疗前,两组患者VSS评分、VAS评分、NRS评分、瘢痕面积及瘢痕厚度无明显差异(P>0.05);治疗后6个月,两组患者VSS评分、VAS评分、NRS评分、瘢痕面积及瘢痕厚度显著降低(P<0.05),且观察组显著低于对照组(P<0.05);治疗前两组患者血清TNF-α、TGF-β_(1)、MMP-9水平无明显差异(P>0.05);治疗后1个月,两组患者血清TNF-α、TGF-β_(1)、MMP-9水平均显著降低(P<0.05),且观察组显著低于对照组(P<0.05);两组患者不良反应总发生率无明显差异(P>0.05)。结论:点阵CO_(2)激光联合BTXA治疗HS疗效显著,能够明显降低VSS评分,减轻患者的痛苦及瘙痒程度,降低患者血清TNF-α、TGF-β_(1)和MMP-9水平,安全性高。

MMP-2、MMP-9及CD133对胃肠神经内分泌肿瘤患者临床预后的影响

目的观察MMP-2、MMP-9及CD133在胃肠神经内分泌肿瘤(gastrointestinal neuroendocrine neoplasms,GI-NENs)中的表达情况,并分析其与临床病理表型及患者预后的关系。方法收集整理我院2018年1月至2022年6月收治的199例GI-NENs患者的完整临床资料,通过免疫组化观察MMP-2、MMP-9及CD133蛋白表达与GI-NENs的临床病理表型及预后的关系。结果三种蛋白的表达情况与GI-NENs患者中的病理分级、临床分型、转移状态均相关(P<0.05);CD133的蛋白表达与GI-NENs患者的年龄也相关(P<0.05)。根据Spearman相关性分析,在GI-NENs中MMP-2与MMP-9(r=0.229,P=0.001)、CD133与MMP-9(r=0.147,P=0.038)之间均呈正相关,CD133与MMP-2蛋白表达之间在GI-NENs中无相关性(r=0.049,P=0.494)。MMP-2、MMP-9及CD133中呈阳性表达的GI-NENs患者,其平均生存时间明显缩短(P=0.033、0.017、0.043)。结论MMP-2、MMP-9及CD133在GI-NENs的疾病进展过程、迁移及侵袭中起着调节作用,可作为评估GI-NENs患者预后的重要参考指标。

CD147/MMP-9通路与2型糖尿病合并高血压患者发生颈动脉粥样硬化的关系

目的探究2型糖尿病(T2DM)合并高血压患者中CD147/基质金属蛋白酶-9(MMP-9)通路与颈动脉粥样硬化(CAS)发生的关系。方法选取T2DM合并高血压患者100例,根据颈动脉内中膜厚度(IMT)将其分为2组:观察组(存在CAS)28例、对照组(不存在CAS)72例。比较2组血清CD147、MMP-9水平;多因素Logistic回归分析T2DM合并高血压患者CAS发生的影响因素;受试者工作特征(ROC)曲线下面积(AUC)评价血清CD147、MMP-9对T2DM合并高血压患者CAS的诊断价值;Pearson相关分析血清CD147、MMP-9与CAS程度(IMT、斑块指数)的相关性。结果与对照组比较,观察组血清CD147、MMP-9水平更高(均P<0.05);血清CD147、MMP-9均为T2DM合并高血压患者CAS发生的危险因素(均P<0.05);血清CD147、MMP-9联合诊断T2DM合并高血压患者CAS的AUC值为0.907,明显高于单一指标检测;T2DM合并高血压患者血清CD147、MMP-9与IMT、斑块指数呈正相关(均P<0.05)。结论CD147/MMP-9通路参与T2DM合并高血压患者CAS的发生,是防治T2DM合并高血压患者CAS发生的靶点。

lncRNA RP11-297P16.4促进肺腺癌细胞侵袭及迁移的机制探讨

目的:探究长链非编码RNA(long non-coding RNA,lncRNA)RP11-297P16.4对人肺腺癌细胞H1299和A549侵袭及迁移的影响。方法:利用qRT-PCR检测在肺腺癌细胞H1299、A549及人正常支气管上皮细胞HBEC中RP11-297P16.4的相对表达水平;设计合成针对RP11-297P16.4的特异性shRNA,慢病毒感染建立稳定敲低lncRNA RP11-297P16.4的H1299、A549细胞;将其分为对照/H1299组、实验/H1299组、对照/A549组、实验/A549组,对照组感染shRNA-NC,实验组感染shRNA-RP11-297P16.4;qRT-PCR检测shRNA敲低效率;采用细胞划痕实验和Transwell实验检测RP11-297P16.4对肺腺癌细胞侵袭、迁移能力的影响;采用qRT-PCR和蛋白质印迹法检测基质金属蛋白酶(matrix metalloproteinase,MMP)-2和-9的mRNA和蛋白质表达水平。结果:与对照组相比,RP11-297P16.4在肺腺癌细胞中高表达,差异有统计学意义(P<0.001,P<0.01);qRT-PCR分析确定,shRNA敲低后RP11-297P16.4的mRNA表达水平显著降低(P<0.001,P<0.001);划痕实验表明24 h、48 h实验组细胞伤口愈合率均低于对照组,差异有统计学意义(P<0.05,P<0.01;P<0.001,P<0.001);Transwell小室检测结果显示,实验组细胞侵袭数量显著少于对照组,差异有统计学意义(P<0.001,P<0.001);qRT-PCR和蛋白印迹法结果显示,实验组细胞中MMP-2和MMP-9 mRNA和蛋白质表达量均低于对照组,差异具有统计学意义(均P<0.05)。结论:lncRNA RP11-297P16.4通过促进MMP-2和MMP-9 mRNA和蛋白表达来增强H1299、A549细胞的侵袭和迁移能力。