Regulation role of miR-204 on SIRT1/VEGF in metabolic memory induced by high glucose in human retinal pigment epithelial cells

AIM:To examine the regulatory role of microRNA-204(miR-204)on silent information regulator 1(SIRT1)and vascular endothelial growth factor(VEGF)under highglucose-induced metabolic memory in human retinal pigment epithelial(hRPE)cells.METHODS:Cells were cultured with either normal(5 mmol/L)or high D-glucose(25 mmol/L)concentrations for 8d to establish control and high-glucose groups,respectively.To induce metabolic memory,cells were cultured with 25 mmol/L D-glucose for 4d followed by culture with 5 mmol/L D-glucose for 4d.In addition,exposed in 25 mmol/L D-glucose for 4d and then transfected with 100 nmol/L miR-204 control,miR-204 inhibitor or miR-204 mimic in 5 mmol/L D-glucose for 4d.Quantitative reverse transcription-polymerase chain reaction(RT-qPCR)was used to detect miR-204 mRNA levels.SIRT1 and VEGF protein levels were assessed by immunohistochemical and Western blot.Flow cytometry was used to investigate apoptosis rate.RESULTS:It was found that high glucose promoted miR-204 and VEGF expression,and inhibited SIRT1 activity,even after the return to normal glucose culture conditions.Upregulation of miR-204 promoted apoptosis inhibiting SIRT1 and increasing VEGF expression.However,downregulation of miR-204 produced the opposite effects.CONCLUSION:The study identifies that miR-204 is the upstream target of SIRT1and VEGF,and that miR-204 can protect hRPE cells from the damage caused by metabolic memory through increasing SIRT1 and inhibiting VEGF expression.

Effects of transforming growth factor β2 and connective tissue growth factor on induction of epithelial mesenchymal transition and extracellular matrix synthesis in human lens epithelial cells

AIM:To Investigate the effects of transforming growth factorβ2(TGF-β2)and connective tissue growth factor(CTGF)on transdifferentiation of human lens epithelial cells(HLECs)cultured in vitro and synthesis of extracellular matrix(ECM).METHODS:HLECs were treated with TGF-β2(0,0.5,1.0,5,10μg/L)and CTGF(0,15,30,60,100μg/L)for different times(0,24,48,72h)in vitro and the expression ofα-smooth muscle actin(α-SMA),the main component of the extracellular matrix typeⅠcollagen(Col-1)and fibronectin(Fn)were measured by using real-time polymerase chain reaction(PCR)and western-blot.RESULTS:TGF-β2 and CTGF significantly increased expression ofα-SMA mRNA and protein(P【0.05,P【0.001),Fn mRNA and protein(P【0.001),Col-1 mRNA and protein(P【0.001).TGF-β2 could induce HLECs expression of CTGF mRNA and protein in dosedependent manner(P【0.05,P【0.001).TGF-β2 and CTGF could induce HLECs to expressα-SMA,Fn and Col-1 in time-dependent manner.Each time of TGF-β2and CTGF induced HELCs expression ofα-SMA,Fn,Col-1 mRNA and protein was significant increase compared with control(P【0.05,P【0.001).CONCLUSION:TGF-β2 and CTGF could induce HLECs epithelial mesenchymal transition and ECM synthesis.

The Effect of Connective Tissue Growth Factor on Human Renal Tubular Epithelial Cell Transdifferentiation

To investigate the role of connective tissue growth factor (CTGF) in transdifferentiation of human renal tubular epithelial cell (HKC), in vitro cultured HKC cells were divided into 3 groups: negtive control, low dose CTGF-treated group (rh CTGF, 2.5 ng/ml) and high dose CTGF-treated (rhCTGF, 5.0 ng/ml). Then the expression of α-smooth muscle actin (α-SMA) were assessed by indirect immuno-fluorescence, and the percentage of α-SMA positive cells were assessed by flow cytometry. RT-PCR were also performed to examine the mRNA level of α-SMA. Upon the stimulation of different concentrations of rhCTGF, the expression of α-SMA were markedly stronger than that in negative controls. The percentages of α-SMA positive cells were significantly higher in the stimulated groups than that of negative controls (38.9 %, 65.5 % vs 2.4 %, P<0.01) .α-SMA mRNA levels were also up-regulated by the stimulation of rhCTGF (P<0.01). These results suggest that CTGF can promote the transdifferentiation of human renal tubular epithelial cells towards myofibroblast (Myo-F).

Role of reactive oxygen species in epithelial-mesenchymal transition and apoptosis of human lens epithelial cells

AIM:To investigate the role of reactive oxygen species(ROS)in epithelial–mesenchymal transition(EMT)and apoptosis of human lens epithelial cells(HLECs).METHODS:Flow cytometry was used to assess ROS production after transforming growth factorβ2(TGF-β2)induction.Apoptosis of HLECs after H_(2)O_(2) and TGF-β2 interference with or without ROS scavenger N-acetylcysteine(NAC)were assessed by flow cytometry.The corresponding protein expression levels of the EMT markerα-smooth muscle actin(α-SMA),the extracellular matrix(ECM),marker fibronectin(Fn),and apoptosis-associated proteins were detected by using Western blotting in the presence of an ROS scavenger(NAC).Wound-healing and Transwell assays were used to assess the migration capability of HLECs.RESULTS:TGF-β2 stimulates ROS production within 8h in HLECs.Additionally,TGF-β2 induced HLECs cell apoptosis,EMT/ECM synthesis protein markers expression,and pro-apoptotic proteins production;nonetheless,NAC treatment prevented these responses.Similarly,TGF-β2 promoted HLECs cell migration,whereas NAC inhibited cell migration.We further determined that although ROS initiated apoptosis,it only induced the accumulation of the EMT markerα-SMA protein,but not COL-1 or Fn.CONCLUSION:ROS contribute to TGF-β2-induced EMT/ECM synthesis and cell apoptosis of HLECs;however,ROS alone are not sufficient for EMT/ECM synthesis.

Expression of transcription factors Slug in the lens epithelial cells undergoing epithelial-mesenchymal transition induced by connective tissue growth factor

AIMTo investigate the expression of transcription factors Slug in human lens epithelial cells (HLECs) undergoing epithelial-mesenchymal transition (EMT) induced by connective tissue growth factor (CTGF).METHODSHLECs were treated with CTGF of different concentrations (20, 50 and 100 ng/mL) or without CTGF (control) for 24h. The morphological changes of HLECs were analysed by microscopy. The expression and cellular localization of Slug was evaluated by immumo-fluorescence. Expressions of Slug, E-cadherin and alpha smooth muscle actin (&#x003b1;-SMA) were further determined by Western blot analysis.RESULTSHLECs showed spidle fibrolasts-like characteristics and loosely connected each other after CTGF treatment. The immuno-fluorescence staining indicated that Slug was localized in the nuclei and its expression was induced by CTGF. The relative expressions of Slug protein were 1.64&#x000b1;0.11, 1.96 &#x000b1;0.03, 3.12 &#x000b1;0.10, and 4.08&#x000b1;0.14, respectively, in response to control group and treatment with CTGF of 20, 50 and 100 ng/mL (F=443.86, P&#x0003c;0.01). The increased Slug protein levels were correlated well with up-expression of &#x003b1;-SMA (0.78&#x000b1;0.05, 0.85&#x000b1;0.06, 2.17&#x000b1;0.15, 2.86&#x000b1;0.10; F=449.85, P&#x0003c;0.01) and down-expression of E-cadherin (2.50&#x000b1;0.11, 1.79&#x000b1;0.26, 1.05&#x000b1;0.14, 0.63&#x000b1;0.08; F=101.55, P&#x0003c;0.01).CONCLUSIONTranscription factor Slug may be involved in EMT of HLECs induced by CTGF in vitro.

EDIL3 depletion suppress epithelial-mesenchymal transition of lens epithelial cells via transforming growth factor β pathway

AIM： To study the effect of discoidin I-like domaincontaining protein 3（EDIL3） depletion on the proliferation and epithelial-mesenchymal transition（EMT） in human lens epithelial cells（LECs）. METHODS： RNA interference was used to inhibit the expression of EDIL3 in human LECs in vitro. The morphology of cells was observed using an inverted microscope. Cell proliferation was assessed using Ed U kit. Cell migration was investigated using Transwell chamber and EMT of LECs was assessed using confocal microscope and Western blotting. The transforming growth factor β（TGFβ） pathway was investigated using Western blotting. RESULTS： The data showed that silencing EDIL3 expression changed LECs morphology and suppressed LECs proliferation（P〈0.05） and migration（P〈0.01）. Furthermore, the result of Western blotting showed that EDIL3 depletion reduced the expression of α-smooth muscle actin（α-SMA）（P〈0.001） and vimentin（P〈0.01）, while increased the expression of E-cadherin（P〈0.001）. EDIL3 depletion could suppress the phosphorylation of Smad2（P〈0.01） and Smad3（P〈0.01） and the activation of exracellular signal regulated kinase（ERK）（P〈0.05）. CONCLUSION： The findings indicate that EDIL3 might participate in the proliferation and EMT in LECs via TGFβ pathway and may be a potential therapeutic target for the treatment of posterior capsule opacification.

Effects of Recombinant Human Growth Hormone on Corneal Healing, Epithelial Nerve Regeneration and Tear Inflammatory Factors in Rabbits

Objective:The goal of this study is to investigate the effects of recombinant human growth hormone(rh GH)on corneal healing,epithelial nerve regeneration and tear inflammatory factor levels in rabbits.Methods:After corneal epithelial injury models were established,fifty adult clean New Zealand white rabbits were randomly divided into two groups,normal saline was administered to the control group,while recombinant human growth hormone was administered to the observation group.The healing rate of corneal epithelial injury,the regeneration ability of corneal epithelial nerve and the level of inflammatory factors in tears were observed and compared between the two groups of rabbits before and 24,48,72 and 96 h after modeling.Results:There were significant differences in corneal epithelial healing rate,time and interaction between the two groups(P<0.05).The experimental group exhibited a superior healing rate of corneal epithelium at 24,48,72,and 96 h compared to the control group(P<0.05).There were significant differences in central cornea sensitivity between the two groups,along with variations in time and interaction(P<0.05).There was no significant difference in the central corneal sensitivity between the two groups before modeling and at 24,72 and 96 h after modeling(P>0.05),whereas the experimental group exhibited a higher central corneal sensitivity compared to the control group at 48 h after modeling(P<0.05).There were significant differences in IL-1α,TNF-α,IL-17a and IL-21 between the two groups(P<0.05).There were significant differences in IL-17a and IL-21 between the two groups(P<0.05).The experimental group exhibited a significant decrease in IL-1αlevels compared to the control group between 24 and 72 h after modeling(P<0.05),the experimental group exhibited a substantial increase in IL-17a levels compared to the control group at 72 h after modeling(P<0.05),and the level of TNF-αin the experimental group was significantly lower than that of the control group between 24 and 96 h after modeling.Conclusion:Recombinant human growth hormone aids in expediting the healing process of the healing of rabbit corneal epithelial injury,facilitating the restoration of epithelial nerve,and mitigating the inflammatory response.

rhEGF凝胶促组织扩张的临床应用研究

目的:探讨重组人表皮生长因子(rhEGF)凝胶在间断恒压皮肤扩张术中局部外用的临床可行性。方法:以本中心施行头皮扩张术的20位患者48个扩张器为研究对象,自身对照,随机分为3组,扩张同时分别外用含有2%氮酮的不同浓度的rhEGF凝胶,即10μg/g、5μg/g和不用药对照组,观察在60mmHg压力下相同时间内的注水速度和注水量,从而反映组织扩张速率。结果:10μg/g组的注水速度和注水量大于对照组(P<0.05),5μg/g组与对照组无统计学差异。结论:rhEGF凝胶可外用于皮肤扩张术中,能有效地缩短扩张时间,但rhEGF浓度不应低于10μg/g。

rhEGF在外伤性鼓膜穿孔治疗过程中的应用

[目的]研究重组人表皮生长因子(recombinant human epidermal growth factor,rhEGF)在治疗外伤性鼓膜穿孔过程中的作用。[方法]对门诊就诊的外伤性鼓膜穿孔患者123例患者,随机的分别采用4种不同的治疗方法(即常规治疗方法、贴膜法、应用rhEGF喷剂法、贴膜和rhEGF喷剂联合应用法),定期观察鼓膜愈合情况、瘢痕的轻重,记录鼓膜完全愈合的时间,按鼓膜穿孔的大、中、小,分3组进行统计学处理。[结果]对小穿孔4种治疗方法差异无显著性意义(愈合时间,P>0.05),对中等穿孔,传统组、贴膜组与rhEGF组、贴膜+rhEGF组之间分别两两比较差异有显著性意义(P<0.05)。对大穿孔,传统组、贴膜组、贴膜+rhEGF组三者之间两两比较差异均有显著性意义(P<0.05)。[结论]外伤性鼓膜穿孔中的中等穿孔和大穿孔应用rhEGF或rhEGF与贴膜联合应用,可以显著地缩短愈合时间,并减轻鼓膜瘢痕,提高治愈率。

Expression and effect of basic fibroblast growth factor on human cataract lens epithelial cells

OBJECTIVE: To detect the expression of basic fibroblast growth factor (bFGF) in human ocular tissues, and to assess the effect of bFGF on the proliferation of human cataract lens epithelial cells (LECs) and its correlation with age. METHODS: Enucleated eyes were subjected to immunostaining for bFGF protein. Human cataract LECs were cultured in vitro, and treated with bFGF for 48 hr. Proliferation was estimated by the positive area ratio of proliferating cell nuclear antigen (PCNA) in immunohistochemistry. RESULTS: bFGF protein was found in various human ocular tissues. bFGF stimulated human cataract LEC proliferation, and there was an age-related decrease in responsiveness of human cataract LECs to bFGF (P

高危型人乳头状瘤病毒感染与宫颈鳞状上皮癌组织相关受体水平的相关性

目的探究高危型人乳头状瘤病毒(HR-HPV)感染与宫颈鳞状上皮癌(CSES)组织中抗原分化因子受体2(C-ERBB-2)、人类表皮生长因子受体2(HER-2)水平的相关性。方法选取2021年9月至2023年9月唐山市妇幼保健院收治的100例CSES患者作为CSES组,另纳入同期于本院接受治疗的宫颈上皮内瘤变(CIN)和宫颈炎患者各90例分别作为CIN组和宫颈炎组,采用免疫组织化学法测定HER-2、C-ERBB-2表达水平,分析HR-HPV感染与CSES组织中C-ERBB-2、HER-2水平的相关性。结果与宫颈炎组比较,CIN组和CSES组的HR-HPV阳性感染率以及C-ERBB-2、HER-2阳性表达率均上升(P<0.05);与CIN组比较,CSES组HR-HPV阳性感染率明显升高(P<0.05),C-ERBB-2、HER-2阳性表达率比较,差异无统计学意义(P>0.05)。年龄≥55岁、TNM分期Ⅲ~Ⅳ期、分化程度为低分化以及有淋巴结转移的C-ERBB-2、HER-2阳性表达和HR-HPV感染阳性的患者比例高于年龄<55岁、TNM分期Ⅰ~Ⅱ期、分化程度为中/高分化、无淋巴结转移的CSES患者(P<0.05)。HR-HPV感染阳性的CSES患者病变组织中C-ERBB-2、HER-2阳性表达率高于HR-HPV感染阴性的CSES患者(P<0.05)。结论CSES病变组织中C-ERBB-2、HER-2高表达,并与HR-HPV感染有关,C-ERBB-2、HER-2可作为CSES诊断和治疗的靶点。

HSYA对人晶状体上皮细胞系SRA01/04生物学特性的影响

目的探讨羟基红花黄色素A(HSYA)对重组人表皮生长因子(rhEGF)诱导的人晶状体上皮细胞系SRA01/04(HLEC-SRA01/04)增殖、迁移及上皮-间质转化(EMT)的影响。方法研究时间为2022年6月至2023年9月。不同浓度HSYA溶液处理rhEGF诱导的HLEC-SRA01/04不同时长,四甲基偶氮唑蓝(MTT)比色法检测各组细胞的增殖状态并计算半数抑制浓度值(IC50)。细胞划痕实验与Transwell小室测定不同浓度组细胞的迁移能力。逆转录荧光定量聚合链式反应法(RT-qPCR)与蛋白印迹法(Western Blot)测定不同浓度组细胞内增殖细胞核抗原(PCNA)及EMT标记物波形蛋白(Vimentin)的mRNA表达水平与蛋白含量。计量资料采用t检验。结果MTT实验结果示:选取20、40、60、80、100μmol/L的HSYA溶液处理5μg/L rhEGF诱导人晶状体上皮细胞24 h后,增殖抑制率分别为(12.1±0.6)%、(19.0±3.8)%、(31.5±2.2)%、(53.7±0.4)%、(70.8±0.3)%,IC50值为(76.520±0.954)μmol/L,48 h增殖抑制率分别为(14.3±3.7)%、(27.4±3.1)%、(42.6±2.7)%、(59.2±2.2)%、(81.0±1.0)%,IC50值为(66.094±2.508)μmol/L,呈明显剂量依赖性。细胞划痕实验结果显示:空白组及0、20、40、70、100μmol/L组的24 h细胞迁移率分别为(46.9±1.8)%、(90.0±1.5)%、(88.4±2.1)%、(43.3±6.6)%、(31.5±16.2)%、(5.82±5.2)%,48 h细胞迁移率分别为(81.1±2.3)%、100%、(95.5±0.1)%、(72.6±3.5)%、(58.5±6.1)%、(37.4±7.1)%。Transwell小室实验结果显示:空白组及0、20、40、70、100μmol/L组的细胞数分别为(171.667±20.407)个、(290.222±24.135)个、(198.667±16.826)个、(161.222±5.981)个、(134.111±6.850)个、(67.444±7.351)个,HSYA对rhEGF诱导人晶状体上皮细胞迁移的抑制呈明显浓度依赖性。RT-qPCR法及Western Blot法结果示:HSYA可明显下调rhEGF诱导的人晶状体上皮细胞内PCNA、Vimentin及mRNA表达水平,呈剂量依赖性。结论HSYA可明显抑制rhEGF诱导的HLEC-SRA01/04增殖、迁移及EMT,可能成为预防后发性白内障的潜在药物。

红景天苷预处理对高糖诱导的ARPE-19细胞上皮-间充质转化的作用与机制研究

目的探讨红景天苷(SAL)对高糖诱导的ARPE-19细胞的上皮-间充质转化的作用及机制。方法采用MTT法筛选刺激ARPE-19细胞增殖的合适的葡萄糖浓度,确定为50 mmol·L^(-1)。将ARPE-19细胞分为正常对照组(Control组)(5 mmol·L^(-1)的D-葡萄糖和45 mmol·L^(-1)甘露醇培养)、高糖组(HG组)(50 mmol·L^(-1)葡萄糖培养)、HG+低SAL组、HG+中SAL组、HG+高SAL组,低、中、高SAL浓度分别为20μmol·L^(-1)、80μmol·L^(-1)、320μmol·L^(-1),SAL预处理4 h后,加50 mmol·L^(-1)葡萄糖,作用48 h。采用MTT法观察细胞增殖率;划痕实验观察细胞迁移活性;免疫荧光检测细胞α平滑肌肌动蛋白(α-SMA)、波形蛋白(Vimentin)的表达;Western blot法检测细胞中α-SMA、Vimentin、纤维粘连素(FN)、Ⅰ型胶原蛋白(Col I)、钙黏附蛋白E(E-Cadherin)、转化生长因子-β1(TGF-β1)、p-Smad2及p-Smad3蛋白的表达水平。结果与Control组相比,HG组ARPE-19细胞增殖率与伤口愈合百分比均增加,细胞内a-SMA、Vimentin、FN、Col I蛋白相对表达量均增加,E-cadherin蛋白相对表达量降低,细胞内TGF-β1、p-Smad2及p-Smad3蛋白相对表达量均增加,差异均有统计学意义(均为P<0.01);与HG组相比,HG+低SAL组、HG+中SAL组及HG+高SAL组ARPE-19细胞增殖率与伤口愈合百分比均降低,细胞内a-SMA、Vimentin、FN、Col I、TGF-β1、p-Smad2及p-Smad3蛋白相对表达量均呈浓度依赖性降低,E-cadherin蛋白相对表达量呈浓度依赖性增加,差异均有统计学意义(均为P<0.05)。结论SAL能够降低高糖诱导的ARPE-19细胞的增殖、迁移能力,以及干预其上皮-间充质转化进程,这可能与SAL抑制了ARPE-19细胞的TGF-β/Smads信号通路有关。

维生素A棕榈酸酯眼用凝胶联合重组人表皮细胞生长因子治疗白内障超声乳化术后干眼症的效果分析

目的 分析维生素A棕榈酸酯眼用凝胶联合重组人表皮细胞生长因子(rhE GF)治疗白内障超声乳化术后干眼症的效果。方法 本研究选择了2022年12月至2023年12月商丘市第一人民医院120例白内障超声乳化术后干眼症患者,根据随机数字表法实施分组,予以常规组60例维生素A棕榈酸酯眼用凝胶治疗,试验组60例予以维生素A棕榈酸酯眼用凝胶联合rhE GF滴眼液治疗。观察两组临床疗效、干眼症症状、炎症因子水平、视功能相关生存质量与不良反应发生情况。结果 持续用药4周后,试验组总治疗有效率高于常规组(P<0.05);两组泪膜破裂时间(BUT)及基础泪液分泌试验I(SIt)水平均高于治疗前,且试验组高于常规组(P<0.05);两组泪液白细胞介素-1β(IL-1β)及白细胞介素-8(IL-8)水平均低于治疗前,且试验组低于常规组(P<0.05);两组视功能相关生存质量量表-25(NEIVFQ-25)评分高于治疗前,且试验组分值高于常规组(P<0.05);两组不良反应总发生率差异无统计学意义(P>0.05)。结论 维生素A棕榈酸酯眼用凝胶联合rhE GF治疗白内障超声乳化术后干眼症的疗效确切,可帮助改善患者干眼症症状,抑制炎症反应,并可促进视功能相关生存质量的提升,避免增加不良反应。

人表皮生长因子受体-2及表皮生长因子受体在人乳头瘤病毒相关型宫颈腺癌中的表达变化及与临床病理特征的关系

目的探究人表皮生长因子受体-2(HER2)及表皮生长因子受体(EGFR)在人乳头瘤病毒(HPV)相关型宫颈腺癌中的表达变化及与临床病理特征的关系。方法选取2016年1月至2023年6月赣州市妇幼保健院的120例HPV相关型宫颈腺癌患者为观察组,同期的40例慢性宫颈炎患者为对照组。比较两组患者的组织HER2及EGFR表达情况,并比较观察组中不同年龄、silva分型、FIGO分期、组织学分级、淋巴结转移情况、脉管累及情况及阴道壁累及情况者的检测结果,采用Spearman相关性分析明确组织HER2及EGFR表达与HPV相关型宫颈腺癌临床病理特征的关系。结果观察组的HER2及EGFR阳性表达率高于对照组,差异有统计学意义(P<0.05)。观察组中不同silva分型、FIGO分期、组织学分级、淋巴结转移、脉管及阴道壁累及情况者的HER2阳性率比较,差异有统计学意义(P<0.05)。观察组中silva分型C型与其他分型、不同FIGO分期、淋巴结转移、脉管及阴道壁累及情况者的EGFR阳性率比较,差异有统计学意义(P<0.05)。相关性分析显示,HPV相关型宫颈腺癌HER2表达与silva分型、FIGO分期、组织学分级、淋巴结转移、脉管及阴道壁累及情况相关(P<0.05)。EGFR表达与silva分型、FIGO分期、淋巴结转移、脉管及阴道壁累及情况相关(P<0.05)。结论HER2及EGFR在HPV相关型宫颈腺癌中呈现高表达状态,且HER2表达与silva分型、FIGO分期、组织学分级、淋巴结转移、脉管及阴道壁累及情况有关,EGFR表达与silva分型、FIGO分期、淋巴结转移、脉管及阴道壁累及情况有关,在本病患者中的检测价值较高。

纳米银抗菌凝胶联合rhEGF对骨科2~3期压力性损伤的护理疗效观察

目的探讨纳米银抗菌凝胶联合重组人表皮生长因子外用溶液(rhEGF)对骨科2~3期压力性损伤的护理疗效观察。方法选取2015年1月至2020年1月在广东省江门市中心医院四肢关节骨科入院前已发生的压力性损伤2~3期的骨折患者共60例为研究对象。将其随机分为A组(泡沫贴组)20例,B组(纳米银抗菌凝胶+泡沫贴)20例,C组(纳米银抗菌凝胶联合rhEGF+泡沫贴)20例。比较三组疗效、愈合情况及时间、疼痛评分、伤口肉芽形态评分、换药时间。结果C组的创面伤口肉芽生长情况良好,愈合时间短于A组和B组,疼痛评分低于A组和B组,换药时间短于A组和B组,差异有统计学意义(P<0.05)。结论纳米银抗菌凝胶联合rhEGF+康惠尔泡沫贴用于治疗2~3期压力性损伤的护理疗效要优于常规泡沫贴或单用纳米银抗菌凝胶,缩短患者创面的愈合时间,降低疼痛度,大大降低了临床护理工作的难度和强度等优点,值得临床推广。

Comparison of FGFR1 expression on lens epithelial cells between adults and fetuses

AIM: To study the differences of fibroblast growth factor receptor 1 (FGFR1) gene on human lens epithelial cells (HLECs) of adults and fetuses. METHODS: Indirect in situ RT-PCR was adopted for detection of FGFR1 gene. The cDNA of the nnRNA in the paraffin sections of fetus and adult HLEC was synthesized by reverse transcription reaction. After PCR amplification, in situ hybridization test was performed with synthesized oligonucleotide probe and relative quantification was carried out using image analysis. RESULTS: HLECs of adults and fetuses expressed FGFR1 gene, the expression level was higher in fetuses than in adults. The difference between them had significance (P<0.05). CONCLUSION: FGFR1 Exist in HLEC and the expression is age-related, which could be one of causes of the high occurrence of post operational after-cataract in children.

Modulation of Matrix Metalloproteinase and TIMP-1 Expression by TGF-β_1 in Cultured Human RPE Cells

In order to investigate the effects of TGF-β1 on the expression of MMP-2, -9 and TIMP- 1 in human retinal pigment epithelial （RPE） cells, the third-sixth passage cultured RPE cells were treated with TGF-β1 at different concentrations （0.01, 0. 1, 1.0, 10 ng/mL）, the expression of MMP-2, -9 and TIMP-1 mRNA was detected by semi-qudntitative RT-PCR assays. MMP-2, -9 and TIMP-1 mRNA were expressed in the cultured RPE cells. The values of MMP-2/β-actin in the cells treated with 0.1, 1.0, 10 ng/mL TGF-β1 were 1.04±0.04, 1.07±0.02 and 1.11±0.03, respectively, significantly higher than in the control group （0.96±0.03, P〈0. 05-0.01）. The expression of MMP-2 mRNA could be up-regulated by TGF-β, , in a dose-dependent manner. The expression of MMP-9 mRNA in the cultured RPE cells was slightly up-regulated by various TGF-β1 concentrations treatment. The values of TIMP-1/β-actin in the cells treated with 0.01 and 0.1 ng/ mL TGF-β1 were 0.85 ±0.01 and 0.97 ± 0.02 respectively, significantly lower than in the control group （1.07±0.04, P〈0.01）, indicating that the expression of TIMP-1 mRNA was down-regulated by TGF-β1 at low concentrations. But along with the increase of TGF-β1 concentrations （1.0 and 10 ng/mL）, the expression of TIMP-1 mRNA was slightly up-regulated, not significantly different from that in the control group （P〉0.05）. It was concluded that TGF-β1 might play an important role in the up-regulation of the expression of MMP-2 in RPE cells and result in a directional shift in the balance between MMP and TIMP. This may be facilitated for RPE cells to migrate in the pathogenesis of vitreoretinopathy.

Blockade of cholecystokinin-2 receptor and cyclooxygenase-2 synergistically induces cell apoptosis, and inhibits the proliferation of human gastric cancer cells in vitro

Gastrin and cyclooxygenase-2(COX-2) playimportant roles in the carcinogenesis and progression ofgastric cancer.However,it remains unknown whether the combination of cholecystokinin-2(CCK-2) receptor antagonist plus COX-2 inhibitor exerts synergistic anti-tumor effects on human gastric cancer.Here,we demonstrated that the combination of AG-041R(a CCK-2 receptor antagonist) plus NS-398(a selective COX-2 inhibitor) treatment had synergistic effects on proliferation inhibition,apoptosis induction,down-regulation of Bcl-2 and up-regulation of Bax expression in MKN-45 cells.These results indicate that simultaneous targeting of CCK-2 receptor and COX-2 may inhibit gastric cancer development more effectively than targeting either molecule alone.(C)2008 Elsevier Ireland Ltd.All rights reserved.

黄连解毒汤联合rhEGF凝胶对深Ⅱ度烧伤患者血清炎症因子及临床疗效的影响

目的观察黄连解毒汤联合重组人表皮生长因子(recombinant human epidermal growth factor,rhEGF)凝胶治疗深Ⅱ度烧伤的临床疗效以及对患者血清炎症因子水平的影响。方法选取2018年1月至2019年1月重庆市开州区人民医院收治的64例深Ⅱ度烧伤患者作为研究对象,按照不同干预方法将其分为观察组(32例)与对照组(32例),观察组患者予以黄连解毒汤联合rhEGF凝胶治疗局部创面,对照组患者单独予以rhEGF凝胶治疗局部创面,对比两组患者创面愈合时间、简明烧伤健康量表(burn specific health scale-brief,BSHS-B)评分以及血清肿瘤坏死因子-α(TNF-α)、白细胞介素-2 (IL-2)、白细胞介素-6 (IL-6)、白细胞介素-10 (IL-10)水平变化情况。结果观察组患者创面愈合时间明显短于对照组(t=4.066,P=0.000),治疗后BSHS-B评分明显高于对照组(t=4.944,P=0.000);治疗第7天,观察组患者血清TNF-α、IL-6水平明显低于对照组(t=7.617、4.832,P均=0.000),血清IL-2、IL-10水平明显高于对照组(t=5.310、5.626,P均=0.000)。结论与rhEGF凝胶单独应用相比,黄连解毒汤与rhEGF凝胶联合应用可有效促进深Ⅱ度烧伤创面愈合,提高患者生活质量,其作用机制可能与黄连解毒汤能够降低患者炎症反应程度有关。