Efficacy of recombinant human epidermal growth factor plus sodium hyaluronate eye drops in diabetic dry eye post-cataract surgery

BACKGROUND Dry eye syndrome(DES)after diabetic cataract surgery can seriously affect the patient’s quality of life.Therefore,effective alleviation of symptoms in patients with this disease has important clinical significance.AIM To explore the clinical effect of recombinant human epidermal growth factor(rhEGF)plus sodium hyaluronate(SH)eye drops on DES after cataract surgery in patients with diabetes.METHODS We retrospectively evaluated 82 patients with diabetes who experienced DES after cataract surgery at Tianjin Beichen Hospital,Affiliated Hospital of Nankai University between April 2021 and April 2023.They were classified into an observation group(42 cases,rhEGF+SH eye drops)and a control group(40 cases,SH eye drops alone),depending on the different treatment schemes.The therapeutic efficacy,dry eye symptom score,tear film breakup time(TFBUT),basic tear secretion score[assessed using Schirmer I test(SIt)],corneal fluorescein staining(FL)score,tear inflammatory markers,adverse reactions during treat-ment,and treatment satisfaction were compared between the two groups.RESULTS Therapeutic efficacy was higher in the observation group compared with the control group.Both groups showed improved TFBUT and dry eye,as well as improved SIt and FL scores after treatment,with a more pronounced improvement in the observation group.Although no marked differences in adverse reactions were observed between the two groups,treatment satisfaction was higher in the observation group.CONCLUSION rhEGF+SH eye drops rendered clinical benefits to patients by effectively ameliorating dry eye and visual impairment with favorable efficacy,fewer adverse reactions,and high safety levels.Thus,this treatment should be promoted in clinical practice.

Clinical observation of recombinant human nerve growth factor in the treatment of neurotrophic keratitis

AIM:To characterize changes of corneal nerve morphology and tear indices in patients with neurotrophic keratitis(NK)treated with recombinant human nerve growth factor(rhNGF).METHODS:In a prospective observational study,six patients(nine eyes)were locally treated with rhNGF.Visual acuity,corneal fluorescein staining score,the heights of the tear river,lipid layer thickness(LLT),tear ferning(TF)test,conjunctival impression cytology(CIC)examination,the densities of cornea subbasal nerve fibers were determined before and after treatment.RESULTS:Compared with baseline,there was a significant difference in corneal fluorescence staining scores(P<0.01);all patient corneal epithelial defects recovered completely within 8wk,but there was no significant improvement in the height of the tear river(P=0.202).LLT was significantly increased when compared with baseline(P=0.042);however,the function of conjunctival goblet cells and mucin content did not significantly improve using the TF test and CIC examination(P=0.557,P=0.539).After 8wk of treatment,the average corneal subbasal nerve fiber density increased significantly(P<0.01),as did the number of corneal nerve fiber branches(P=0.001).CONCLUSION:RhNGF can increase the density of corneal subbasal nerve fibers,promote the healing of persistent corneal epithelial defects and corneal ulcers in patients with NK,also improving tear function partially.

EFFECTS OF TRANSFORMING GROWTH FACTOR β AND RECOMBINANT HUMAN BONE MORPHOGENETIC PROTEIN 2 ON HUMAN PERIODONTAL LIGAMENT FIBROBLASTS

Objective To evaluate the effects of transforming growth factor β(TGF-β) and recombinant human bone morphogenetic protein 2 (rhBMP2) on human periodontal ligament fibroblasts (HPDLFs). Methods HPDLFs were done primary culture to detect the distinct concentrations of TGF-P and rhBMF2 on its proliferation, alkaline phosphatase (ALP) activity, osteocalcin (OC) synthesis and formation of the minerali-zed nodules, respectively. Results TGF-β (5～100ng/ml) significantly stimulated the proliferation of HPDLFs. The ALP activity of HPDLFs was evaluated evidently by 5ng/ml TGF-β. TGF-β( 0. 5 ～ 100ng/ml) had no effects on OC synthesis and formation of the mineralized nodules of HPDLFs. rhBMP2 (0. 25～2mg/ ml) had no remarkable effect on the proliferation of HPDLFs. The ALP activity, OC synthesis and forma-tion of the mineralized nodules of HPDLFs were significantly stimulated by 0. 5～ 2mg /ml rhBMP2. Conclusion The effects of TGF-β and rhBMP2 on HPDLFs are dose-dependent. TGF-P can stimulate HPDLFs to express the early marker of osteoblastic phenotype, and it lacks the ability to promote maturation of the osteogenic phenotype. rhBMP2 can not only stimulate the expression but also promote the maturation of osteoblas-tic phenotype of HPDLFs.

Effects of epidermal growth factor on the growth of human gastric cancer cell and the implanted tumor of nude mice

AIM: Epidermal growth factor (EGF) plays an important role in the regulation of gastrointestinal tissue growth and development, and it can stimulate epithelial proliferation, cell differentiation and growth. It has been established that the EGF can promote gastric cytoprotection and ulcer healing. But the potential ability of EGF to regulate the gastric cancer growth is unknown. This study is to investigate the influence of EGF on human gastric cancer cell and the implanted tumor growth of nude mice. METHODS: The cell growth rates of human gastric adenocarcinoma cell lines MKN-28, MKN-45, SGC-7901 and normal human gastric epithelial cells 3T3 were assessed when incubated with recombinant human EGF (rhEGF, 0.05, 0.1, 0.5, 1.0, 10, 50, 100 mg.L(-1)) using MTT method. The cells of MKN-28, MKN-45, SGC-7901 (gastric cancer tissue 1.5mm(3)) were implanted in the BALB/cA nude mice for 10 days.The EGF was given intraperitoneally (15, 30, 60 microg.kg(-1)) for 3 weeks. The body weights of the tumor-bearing animals and their tumor mass were measured afterwards to assess the mitogenic effect of rhEGF in the nude mice. RESULTS: Within the concentration range of 0.05-100mg.L(-1), rhEGF could increase the cell growth of normal 3T3 cells (cell growth rate 100% vs 102.8%, P【0.05), but partially restrain the gastric cancer cell growth. The latter effect was related to cell differentiation. In 15-60 microg/kg rhEGF groups, the mean implanted tumor mass of MKN-28 cell were 1.75 g, 1.91 g, 2.08 g/NS group 1.97 g (P】0.05), the mean tumor mass of SGC-7901 cell were 1.53 g, 1.07 g, 1.20 g/NS group 1.07 g (P】0.05), and for MKN-45 cell, the tumor mass were respectively 1.92 g, 1.29 g, 1.77 /NS group 1.82 g (P】0.05). So rhEGF had no obvious effect on implanted MKN-28, SGC-7901 and MKN-45 tumor growth. CONCLUSION: EGF has no stimulating effect on the human gastric cancer cell growth neither in vitro nor in vivo.

Chemical and enzymatic synthesis and doning of human epidermal growth factor gene

The human epidermal growth factor gene was synthesized with DNA synthesizer andby enzymes.Computer assisted to design the gene sequence and the restriction enzyme sites,andto elhninate the repeated and self-complementary sequences.So that multiple doning and gene ex-pression were available for the designed gene sequence.The whole gene was formed by annealing8 chemically synthesized oligodeoxynucleotide fragments,enzymatically filling up the 4 twenty-basespaces and ligating the nicks,and was inserted into EcoR I and HInc Ⅱ sites ofplasmid pUC12.The recombinant plasmid was transformed into E.coli JM103 and 200 whitedones were obtained by X-gal and ampicilin screening.The positive clones were isolated andcharacterized by restriction enzyme analysis and DNA sequencing.

A New Protocol for Solubilization, Refolding and Purification of Recombinant Human Granulocyte Colony-stimulating Factor in Inclusion Bodies

Recombinant human granulocyte colony-stimulating factor （rhG-CSF） in inclusion bodies was solubilized by 8 mol/L urea solution and subsequently precipitated by acetone to improve its purity. After that, the precipitates were solubilized by sodium hydroxide solution containing 2 mol/L urea. Then the solubilized rhG-CSF was passed through a size exclusion chromatography for refolding and extensive purification, and further purified by a weak anion exchange chromatography. The purity and mass recovery of refolded rhG-CSF were 96.5% and 75.6%, respectively. The bioactivity was 8.4x10^7 IU/mg.

Antitumor effect of recombinant human endostatin combined with cisplatin on rats with transplanted Lewis lung cancer

Objective: To observe the antitumor effect and mechanism of recombinant human endostatin(Endostar) injection in tumor combined with intraperitoneal injection of cisplatin on subcutaneous transplanted Lewis lung cancer in rats. Methods: A total of 30 C57 rats were selected, and the monoplast suspension of Lewis lung cancer was injected into the left axilla to prepare the subcutaneous transplanted tumor models in the axilla of right upper limb. The models were randomly divided into Groups A, B, and C. Medication was conducted when the tumor grew to 400 mm3. Group A was the control group without any interventional treatment. Group B was injected with Endostar 5 mg.kg-1.d for 10 d. Group C was given the injection of Endostar 5 mg.kg-1.d combined with intraperitoneal injection of cisplatin 5 mg.kg-1.d for 10 d. All the rats in three groups were executed the day after the 10-d medication and the tumor was taken off for measurement of volume and mass changes and calculation of antitumor rate, after which the vascular endothelial growth factor(VEGF) concentration in rats' plasma was determined by ELISA. The tumor tissues were cut for the preparation of conventional biopsies. After hematoxylin-eosin staining, the pathologic histology was examined to observe the structures of tumor tissues, VEGF score and microvessel density(MVD) in each group. Results: The volume and mass of tumor in Groups B and C were significantly lower than Group A(P < 0.05) while the tumor volume and mass in Group C were significantly lower than Group B(P < 0.05). The antitumor rate in Group C was significantly higher than Group B(P < 0.05), but the tumor VEGF score, MVD and plasma VEGF level in Group C were significantly lower than Groups A and B(P < 0.05). In Group B, the tumor VEGF score, MVD and plasma VEGF level were significantly lower than Group A(P < 0.05). The microscopic image of Group C showed that its number of active tumor cells and the blood capillary around tumor was significantly smaller than that of Groups A and B, and meanwhile atrophy and liquefactive necrosis were seen in local tumor. Conclusions: Endostar injection combined with intraperitoneal injection of cisplatin is effective in reducing tumor VEGF score and MVD of transplanted tumor tissues in rats with Lewis lung cancer to obstruct the nutrient supply of tumor cells and kill tumor cells, so that the inhibition of tumor cell proliferation and metastasis can be achieved with a remarkable effect.

Effect of recombinant human endostatin onradiotherapy for esophagus cancer

Objective:To investigate the effect of radiotherapy plus recombinant human endostatin（RHendostatin） on esophageal cancer and its mechanism.Methods:A total of SO nudemice were equally randomized into control group,radiotherapy group,and combined therapy group Ⅰ,Ⅱ,and Ⅲ after inoculating with Ecal09 cell suspension（1×107 cells/mL）.On the day of grouping,control group and radiotherapy group were injected normal saline,while radiotherapy group and 3 combined therapy groups received radiotherapy;besides,combined therapy group Ⅰ,Ⅱ,and Ⅲ was injected RH-endostatin of 2.5,5,10 mg/kg respectively.After 3-week therapy,the tumors of each group were collected and microvessel density and VEGF expression in tumors were determined.In vitro,Eca109 cells were divided into control group,radiotherapy group,and combined therapy group.Forty-eight hours after treatment cell cycle distribution and apoptosis rate were detected,and the activity of VEGF signal paths was semiquantitatively analyzed.Results:Since the 6th day of treatment,the relative tumor proliferation rate of combined therapy group Ⅱ was lower than radiotherapy group（P<0.05） and 40%since the 15 th day.Average microvessel density and EGFR expression in combined therapy group Ⅱ were lower than radiotherapy group（P<0.05）.In vitro,the cell percentage in S and G2/M phase of combined therapy group cells was lower than that in radiotherapy group cells,while the apoptosis rate and the expression of VEGF,AKT,p-AKT,ERK1/2 and p-ERKl/2 in combined group were higher than that in radiotherapy group（P<0.05）.Conclusions:RH-endostatin promotes the efficacy of radiotherapy on esophageal cancer,which may be partly realized by inhibiting the activity of VEGF related signal paths.

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.

枇杷叶三萜酸联合重组人表皮生长因子对激素依赖性皮炎豚鼠皮肤屏障功能的修复及免疫失衡的影响

目的 观察枇杷叶三萜酸(TAL)联合重组人表皮生长因子(rh-EGF)对激素依赖性皮炎(HDD)豚鼠模型皮肤屏障功能修复及免疫失衡的影响。方法 选取40只无特定病原(SPF)级豚鼠,随机分为对照组、模型组、rh-EGF组、TAL组和联合组,每组各8只。除对照组外,其他各组涂抹0.05%卤米松乳膏,连续45 d,构建HDD模型。构建成功后,rh-EGF组涂抹rh-EGF凝胶,TAL组涂抹TAL溶液,联合组涂抹TAL和rh-EGF凝胶,对照组和模型组涂抹生理盐水,共15 d。记录各组临床症状并打分;检测经皮水分丢失(TEWL)、角质层含水量(WCSC)和皮脂量(SC);HE染色观察各组豚鼠皮肤组织病理变化;采用酶联免疫吸附测定(ELISA)法检测总免疫球蛋白E(IgE)、白细胞介素-4(IL-4)、干扰素-γ(IFN-γ)水平。结果 与对照组比较,模型组症状明显、皮肤组织损坏严重,TEWL增加,WCSC和SC减少;免疫因子Ig E和IL-4水平升高、IFN-γ水平降低(P<0.05)。与模型组比较,rh-EGF组、TAL组和联合组用药后临床症状减轻、皮肤组织损伤不明显;TEWL减少,WCSC和SC增加,免疫因子IgE和IL-4水平降低、IFN-γ水平升高(P<0.05)。且联合组与rh-EGF组和TAL组比较,作用效果更加明显(P<0.05)。TAL组和联合组各指标比较,差异无统计学意义(P>0.05)。结论 TAL联合rh-EGF可有效缓解HDD豚鼠的临床症状,改善皮肤细胞损伤,修复皮肤屏障功能,提升免疫能力。

复方桐叶烧伤油联合重组人碱性成纤维细胞生长因子凝胶治疗喉癌术后咽漏的疗效研究

目的研究喉癌术后咽漏患者应用复方桐叶烧伤油联合重组人碱性成纤维细胞生长因子凝胶(rh-bFGF)治疗的疗效。方法选取2018年1月至2022年12月本院收治的行喉癌切除术后咽漏患者60例,采用随机数字表法分为治疗组和对照组,每组30例。治疗组使用复方桐叶烧伤油联合rh-bFGF纱条进行局部换药,对照组仅使用rh-bFGF纱条进行局部换药。评估咽漏疗效、治愈时间和费用。结果治疗组患者显效率[46.67%(14/30)]、总有效率[96.67%(29/30)]与对照组[30.00%(9/30)和86.67%(26/30)]比较,差异均无统计学意义(P>0.05)。治疗组患者治疗后血清白细胞介素6水平[(16.56±4.26)pg/L]均低于治疗前[(53.96±6.28)pg/L]与对照组[(24.35±3.61)pg/L],术后住院费用[(57817.7±2203.7)元]明显少于对照组[(61915.5±1972.9)元],住院时间[(19.27±2.35)d]明显短于对照组[(24.77±2.16)d],差异均有统计学意义(P<0.05)。结论复方桐叶烧伤油联合rh-bFGF治疗喉癌术后咽漏效果与常规使用rh-bFGF相当,可促进愈合,减轻炎症反应,且与常规使用rh-bFGF比较,可缩短住院时间和费用,具有较好的临床获益,值得推广应用。

rhEGF联合利多卡因与维生素E治疗儿童复发性口腔溃疡的效果

目的探讨重组人表皮生长因子(rhEGF)联合利多卡因与维生素E治疗儿童复发性口腔溃疡(ROU)的临床效果.方法选取2022年7月—2023年6月期间南阳医学高等专科学校第一附属医院口腔科收治的94例ROU患儿为研究对象,采用随机数字表法分为对照组及观察组,每组47例.对照组采用维生素E联合利多卡因治疗,观察组在此基础上采用rhEGF治疗.比较两组患儿的症状改善情况、疼痛评分、溃疡面积、炎症指标及总有效率.结果观察组的疼痛缓解时间、溃疡愈合时间、进食改善时间分别为(3.16±1.06)d,(4.37±0.92)d,(3.49±1.04)d,均短于对照组,组间差异有统计学意义(P﹤0.05).治疗3d后,观察组的疼痛评分、白细胞介素-8、肿瘤坏死因子-α水平均低于对照组,溃疡面积小于对照组,组间差异有统计学意义(P﹤0.05).观察组的治疗总有效率为97.87%,高于对照组的82.98%,差异有统计学意义(P﹤0.05).两组的用药相关不良反应总发生率比较,差异无统计学意义(P﹥0.05).结论采用rhEGF联合利多卡因与维生素E治疗儿童ROU的效果理想,能促进临床症状消退,降低患儿炎症指标水平,且在加速溃疡愈合及改善其口腔状况方面也有积极作用.

含重组人碱性成纤维细胞生长因子和重组人骨形态发生蛋白-2骨水泥在骨质疏松性腰椎压缩性骨折治疗的应用价值

目的:探讨含重组人碱性成纤维细胞生长因子(recombinant human basic fibroblast growth factor,rhbFGF)和重组人骨形态发生蛋白-2(recombinant human bone morphogenetic protein-2,rhBMP-2)骨水泥在骨质疏松性腰椎压缩性骨折(osteoporotic vertebral compression fracture,OVCF)患者经皮椎体后凸成形术(percutaneous kyphoplasty,PKP)治疗的应用价值。方法:回顾性分析2018年1月至2021年1月收治的103例行PKP手术治疗的OVCF患者,男40例,女63例;年龄61~78(65.72±3.29)岁。受伤原因:滑倒33例,跌倒42例,提重物受伤28例。根据填充骨水泥不同分为3组:磷酸钙组34例,男14例,女20例,年龄(65.1±3.3)岁,填充磷酸钙骨水泥;rhBMP-2组34例,男12例,女22例,年龄(64.8±3.2)岁,填充含rhBMP-2的骨水泥;rhbFGF+rhBMP-2组35例,男14例,女21例,年龄(65.1±3.6)岁,填充含rhbFGF和rhBMP-2的骨水泥。比较3组Oswestry功能障碍指数(Oswestry dysfunction index,ODI)、骨密度、椎体前缘丢失高度、伤椎前缘压缩率、疼痛视觉模拟评分(visual simulation score,VAS)及再骨折发生率。结果:所有患者获得12个月随访。3组术后ODI、VAS呈下降(P<0.001),骨密度增高(P<0.001),椎体前缘丢失高度、伤椎前缘压缩率呈先下降后缓慢上升趋势(P<0.001),rhbFGF+rhBMP-2组术后第1、6、12个月ODI、VAS均低于rhBMP-2组和磷酸钙组(P<0.05),术后第6、12个月骨密度大于rhBMP-2组和磷酸钙组(P<0.05)。rhbFGF+rhBMP-2组术后第6、12个月椎体前缘丢失高度、伤椎前缘压缩率均低于rhBMP-2组和磷酸钙组(P<0.05)。3组再骨折发生率比较差异无统计学意义(P>0.05)。结论:含rhbFGF和rhBMP-2骨水泥可更有效地增加OVCF患者骨密度,获得术后满意的临床和放射学效果,显著改善临床症状。

重组人生长激素治疗对身材矮小症患儿血清IGF-1、Ghrelin及LP水平的影响

目的探讨重组人生长激素(rhGH)治疗对身材矮小症患儿的疗效及其对血清胰岛素样生长因子-1(IGF-1)、饥饿激素(Ghrelin)及瘦素(LP)水平的影响。方法选择该院2021年1—12月收治的身材矮小症患儿79例为研究对象,按照随机数字表法将其分为对照组39例和观察组40例。对照组采用加强营养,并补充钙质、微量元素和各种维生素等常规治疗,观察组在常规治疗的基础上给予rhGH治疗,两组治疗时间均为12个月。比较两组患儿治疗前和治疗12个月后身高、生长速度、身高标准差积分(HtSDS)及血清IGF-1、Ghrelin、LP水平变化,比较两组不良反应发生情况。结果治疗前,两组患儿身高、生长速度、HtSDS及血清IGF-1、Ghrelin、LP水平比较,差异均无统计学意义(P>0.05);治疗12个月后,两组患儿身高、HtSDS及血清IGF-1、LP水平均高于治疗前,生长速度均快于治疗前,血清Ghrelin水平均低于治疗前,差异均有统计学意义(P<0.05);观察组患儿治疗12个月后身高、HtSDS及血清IGF-1、LP水平均高于对照组,生长速度快于对照组,血清Ghrelin水平低于对照组,差异均有统计学意义(P<0.05);对照组患儿治疗期间未出现任何不良反应,观察组治疗期间出现甲状腺功能减退1例,膝部疼痛2例,但两组患儿不良反应发生率比较,差异无统计学意义(P>0.05)。结论rhGH可有效改善身材矮小症患儿血清IGF-1、Ghrelin及LP水平,促进患儿生长,临床疗效满意,安全性高,值得临床应用。

大隐静脉高位结扎联合泡沫硬化剂注射术+外用重组人酸性成纤维细胞生长因子治疗重度静脉曲张合并溃疡患者的临床疗效

目的探讨大隐静脉高位结扎联合泡沫硬化剂注射术+外用重组人酸性成纤维细胞生长因子治疗重度静脉曲张合并溃疡患者的临床疗效。方法收集2018年1月至2023年6月解放军联勤保障部队第九〇〇医院收治的60例大隐静脉曲张患者的临床资料,按照治疗方式的不同将其分为对照组(n=30)与观察组(n=30),两组患者均采用大隐静脉高位结扎联合泡沫硬化剂注射术,对照组溃疡创面采用碘伏和生理盐水常规换药,观察组溃疡创面采用外用重组人酸性成纤维细胞生长因子治疗。比较两组患者手术时间、术中出血量、住院时间、住院费用、术后并发症的发生情况、治疗前后溃疡面积、溃疡愈合时间、疼痛数字评价量表(NRS)评分以及患者对诊疗过程的满意度。结果观察组患者住院时间短于对照组患者,差异有统计学意义(P﹤0.05)。术后第7天,两组患者溃疡面积均小于本组术前,且观察组患者溃疡面积小于对照组患者,差异均有统计学意义(P﹤0.05)。观察组患者溃疡愈合时间短于对照组患者,差异有统计学意义(P﹤0.05)。术后第14天,两组患者NRS评分均低于本组术前,且观察组患者NRS评分低于对照组患者,差异均有统计学意义(P﹤0.05)。观察组患者满意度评分高于对照组患者,差异有统计学意义(P﹤0.05)。结论大隐静脉高位结扎联合泡沫硬化剂注射术+外用重组人酸性成纤维细胞生长因子可显著促进下肢静脉性溃疡创面的愈合,明显缩短溃疡愈合时间、住院时间,缓解患者下肢疼痛程度,提高患者的诊疗满意度,值得在临床上进一步推广应用。

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。

重组牛碱性成纤维细胞生长因子凝胶联合宫颈环形电切术治疗宫颈上皮内瘤变的临床效果

目的探究重组牛碱性成纤维细胞生长因子(rb-bFGF)凝胶联合宫颈环形电切术(LEEP)治疗宫颈上皮内瘤变的临床效果。方法选取2021年7月至2023年8月于抚州市第一人民医院就诊的88例宫颈上皮内瘤变患者作为研究对象,采用随机数字表法分为研究组(44例)及对照组(44例)。对照组采用LEEP刀治疗,研究组在其基础上联合rb-bFGF凝胶。比较两组临床疗效、创面愈合情况、人乳头瘤病毒(HPV)-DNA16及HPV-DNA18表达量、并发症。结果研究组治疗总有效率高于对照组,差异有统计学意义(P<0.05)。研究组阴道出血量少于对照组,创面愈合时间及阴道出血持续时间均短于对照组,差异有统计学意义(P<0.05)。研究组治疗后HPV-DNA16、HPV-DNA18表达量均低于对照组,差异有统计学意义(P<0.05)。研究组并发症发生率低于对照组,差异有统计学意义(P<0.05)。结论rb-bFGF凝胶联合LEEP刀在宫颈上皮内瘤变患者治疗中效果显著,能够有效缩短创面愈合时间,减少创面出血量,同时还可降低HPV表达水平,遏制病毒复制,且术后并发症较少,安全可靠,值得推广应用。

鼠神经生长因子联合低剂量重组人促红细胞生成素对早产儿脑损伤后神经发育的影响

目的:探讨鼠神经生长因子(mNGF)联合低剂量重组人促红细胞生成素(rh Epo)对早产儿脑损伤后神经发育的影响。方法:选取2021年3月~2022年3月期间某院收治的200例脑损伤早产儿作为研究对象,依据随机数字表法分为对照组和观察组,每组100例。两组患儿均给予营养支持、水电解质纠正、血糖、血压维持等常规治疗,对照组在常规治疗基础上给予注射用鼠神经生长因子,观察组在对照组治疗基础上静脉注射低剂量重组人促红素注射液(CHO细胞)。比较两组患儿脑损伤相关因子[神经元特异性烯醇化酶(NSE)、S100钙结合蛋白β(S100β)、8-羟基脱氧鸟苷(8-OHdG)、8-异前列腺素F2α(8-iso-PGF2α)]、炎症因子[肿瘤坏死因子-α(TNF-α)、白介素-18(IL-18)、Toll样受体4(TLR4)]水平、神经发育异常情况、智能等级及不良反应发生情况。结果:治疗后,两组患儿NSE、S100β、8-OHdG、8-iso-PGF2α水平均降低(P<0.05),且观察组低于对照组(P<0.05);两组患儿TNF-α、IL-18、TLR4水平均降低(P<0.05),且观察组低于对照组(P<0.05);观察组患儿神经发育异常项目≥3项及异常项目≥1项的发生率均低于对照组(P<0.05);两组患儿智能等级均呈升高趋势(P<0.05),且观察组升高趋势更明显(P<0.05);两组患儿不良反应总发生率比较无统计学差异(P>0.05)。结论:在常规治疗基础上联用m NGF、低剂量rhEpo可有效降低患儿脑损伤相关因子水平及神经发育异常率,提高智能等级,且未增加不良反应的发生风险。

玻璃酸钠联合重组牛碱性成纤维细胞生长因子滴眼液治疗眼角结膜干燥症的临床疗效分析

目的探讨玻璃酸钠与重组牛碱性成纤维细胞生长因子滴眼液联合治疗眼角结膜干燥症的临床疗效。方法选取2020年7月至2022年1月建瓯市立医院收治的74例眼角结膜干燥症患者作为研究对象,采用随机抽样法分为观察组(玻璃酸钠联合重组牛碱性成纤维细胞生长因子滴眼液治疗)与对照组(单纯玻璃酸钠滴眼液治疗),每组37例。比较两组治疗前后眼功能指标、临床疗效及不良反应发生情况。结果用药2周后,两组国际标准眼表疾病指数(OSDI)均低于用药前,泪膜破裂时间(BUT)均长于用药前,且观察组OSDI值低于对照组,BUT长于对照组,差异有统计学意义(P<0.05);用药2周后,两组角膜荧光素染色评分(FL)、干眼症状评分(DESS)均低于用药前,且观察组低于对照组,差异有统计学意义(P<0.05);观察组治疗总有效率高于对照组,差异有统计学意义(P<0.05);观察组不良反应发生率低于对照组,差异有统计学意义(P<0.05)。结论玻璃酸钠联合重组牛碱性成纤维细胞生长因子滴眼液治疗眼角结膜干燥症效果显著,能显著改善患者眼功能,延长泪膜破裂时间,且安全性较高,值得临床推广应用。

不同剂量重组人生长激素对特发性矮小症患儿25-羟维生素D、胰岛素样生长因子1水平的影响

目的分析不同剂量重组人生长激素(rhGH)对特发性矮小症(ISS)患儿25-羟维生素D、胰岛素样生长因子1(IGF-1)水平的影响。方法选取2019年12月至2021年7月在山东大学附属儿童医院儿童保健所就诊的ISS儿童共72例为研究对象。患儿均在常规营养支持治疗基础上给予rhGH治疗,根据rhGH的剂量不同分为两组,对照组(34例)的剂量为0.15IU/(kg·d),观察组(38例)的剂量为0.20 IU/(kg·d),比较两组身高、身高标准差积分(HtSDS)、体重指数(BMI)及治疗后25-羟维生素D、IGF-1水平的变化。结果两组治疗前身高、HtSDS、BMI、25-羟维生素D、IGF-1水平比较,差异无统计学意义(P>0.05);治疗后,观察组HtSDS、IGF-1水平均高于对照组(P<0.05)。结论高剂量rhGH可有效改善ISS儿童的身高及IGF-1水平,值得临床应用。