Keratinocyte growth factor gene therapy ameliorates ulcerative colitis in rats

AIM:To investigate the effect of keratinocyte growth factor(KGF) gene therapy in acetic acid-induced ulcerative colitis in rat model.METHODS:The colitis of Sprague-Dawley rats was induced by intrarectal infusion of 1 mL 5%(v/v) acetic acid.Twenty-four hours after exposed to acetic acid,rats were divided into three experimental groups:control group,attenuated Salmonella typhimurium Ty21a strain(SP) group and SP strain carrying human KGF gene(SPK) group,and they were separately administered orally with 10% NaHCO3,SP or SPK.Animals were sacrificed and colonic tissues were harvested respectively on day 3,5,7 and 10 after administration.Weights of rats,colonic weight/length ratio and stool score were evaluated.Histological changes of colonic tissues were examined by hematoxylin and eosin(HE) staining method.The expression of KGF,KGF receptor(KGFR) and TNF-α were measured either by enzyme-linked immunosorbent assay or Western blotting.Immunohistochemistry was used to detect the cellular localization of KGFR and Ki67.In addition,superoxide dismutase(SOD) activity and malondialdehyde(MDA) contents in the homogenate were measured.RESULTS:Body weight and colonic weight/length ratio were declined in SPK group compared with SP and control groups(body weight:272.78 ± 17.92 g vs 243.72 ± 14.02 g and 240.68 ± 12.63 g,P < 0.01;colonic weight/length ratio:115.76 ± 7.47 vs 150.32 ± 5.99 and 153.67 ± 5.50 mg/cm,P < 0.01).Moreover,pathological changes of damaged colon were improved in SPK group as well.After administration of SPK strain,KGF expression increased markedly from the 3rd d,and remained at a high level till the 10th d.Furthermore,KGFR expression and Ki67 expression elevated,whereas TNF-α expression was inhibited in SPK group.In the group administered with SPK,SOD activity increased significantly(d 5:26.18 ± 5.84 vs 18.12 ± 3.30 and 18.79 ± 4.74 U/mg,P < 0.01;d 7:35.48 ± 3.35 vs 22.57 ± 3.44 and 21.69 ± 3.94 U/mg,P < 0.01;d 10:46.10 ± 6.23 vs 25.35 ± 4.76 and 27.82 ± 6.42 U/mg,P < 0.01) and MDA contents decreased accordingly(d 7:7.40 ± 0.88 vs 9.81 ± 1.21 and 10.45 ± 1.40 nmol/mg,P < 0.01;d 10:4.36 ± 0.62 vs 8.41 ± 0.92 and 8.71 ± 1.27 nmol/mg,P < 0.01),compared with SP and control groups.CONCLUSION:KGF gene therapy mediated by attenuated Salmonella ameliorates ulcerative colitis induced by acetic acids,and it may be a safe and effective treatment for ulcerative colitis.

Association of hepatocyte-derived growth factor receptor/caudal type homeobox 2 co-expression with mucosal regeneration in active ulcerative colitis

AIM:To characterize the regeneration-associated stem cell-related phenotype of hepatocyte-derived growth factor receptor(HGFR)-expressing cells in active ulcerative colitis(UC).METHODS:On the whole 38 peripheral blood samples and 38 colonic biopsy samples from 18 patients with histologically proven active UC and 20 healthy control subjects were collected.After preparing tissue microarrays and blood smears HGFR,caudal type homeobox 2(CDX2),prominin-1(CD133) and Musashi-1conventional and double fluorescent immunolabelings were performed.Immunostained samples were digitalized using high-resolution Mirax Desk instrument,and analyzed with the Mirax TMA Module software.For semiquantitative counting of immunopositive lamina propria(LP) cells 5 fields of view were counted at magnification x 200 in each sample core,then mean ± SD were determined.In case of peripheral blood smears,30 fields of view with 100 μm diameter were evaluated in every sample and the number of immunopositive cells(mean ± SD) was determined.Using 337 nm UVA Laser MicroDissection system at least 5000 subepithelial cells from the lamina propria were collected.Gene expression analysis of HGFR,CDX2,CD133,leucine-rich repeat-containing G-protein coupled receptor 5(Lgr5),Musashi-1 and cytokeratin20(CK20) were performed in both laser-microdisscted samples and blood samples by using real time reverse transcription polymerase chain reaction(RT-PCR).RESULTS:By performing conventional and double fluorescent immunolabelings confirmed by RT-PCR,higher number of HGFR(blood:6.7 ± 1.22 vs 38.5 ±3.18;LP:2.25 ± 0.85 vs 9.22 ± 0.65;P < 0.05),CDX2(blood:0 vs 0.94 ± 0.64;LP:0.75 ± 0.55 vs 2.11± 0.75;P < 0.05),CD133(blood:1.1 ± 0.72 vs 8.3± 1.08;LP:11.1 ± 0.85 vs 26.28 ± 1.71;P < 0.05)and Musashi-1(blood and LP:0 vs scattered) positive cells were detected in blood and lamina propria of UC samples as compared to controls.HGFR/CDX2(blood:0 vs 1± 0.59;LP:0.8 ± 0.69 vs 2.06 ± 0.72,P < 0.05)and Musashi-1/CDX2(blood and LP:0 vs scattered) coexpressions were found in blood and lamina propria of UC samples.HGFR/CD133 and CD133/CDX2 coexpressions appeared only in UC lamina propria samples.CDX2,Lgr5 and Musashi-1 expressions in UC blood samples were not accompanied by CK20 mRNA expression.CONCLUSION:In active UC,a portion of circulating HGFR-expressing cells are committed to the epithelial lineage,and may participate in mucosal regeneration by undergoing mesenchymal-to-epithelial transition.

Comparative Observation on Nursing Effect of Nursing Intervention and Routine Nursing in Patients with Renal Calculi and Gastric Ulcer and the Impacts on Epidermal Growth Factor

Objective: To explore the comparative observation on nursing effect of nursing intervention and routine nursing in patients with renal calculi and gastric ulcer and the impacts on epidermal growth factor. Methods: A total of 72 patients with renal calculi and gastric ulcer were selected and treated in our hospital from January 2018 to December 2018. They were divided into the observation group and the control group, 36 for each. Comprehensive nursing intervention was implemented in the observation group, whereas routine nursing was implemented in the control group. The level of epidermal growth factor, nursing satisfaction, renal calculi recurrence rate, average hospital stay and postoperative blood loss were compared between the two groups after nursing. Results: There was no significant difference in the level of epidermal growth factor between the two groups before nursing (P > 0.05), while after nursing, the level in the observation group was higher compared with the control group, and the difference between the two groups was significant (P Conclusion: With regard to patients with renal calculi and gastric ulcer, comprehensive nursing intervention can improve nursing satisfaction and quality of patients’ lives, reduce calculi recurrence rate, and increase the level of epidermal growth factor, which has clinical application value.

Effect of Acupuncture-moxibustion on the Expression of IGF-1 and SOCS2 in Colonic Mucosa of Rats with Ulcerative Colitis

Objective： To observe the effect of acupuncture-moxibustion on the expression of insulin-like growth factor-I （IGF-I） and suppressor of cytokine signaling-2 （SOCS2） in colonic mucosa of rat models of ulcerative colitis （UC）, and explore the mechanism of acupuncture- moxibustion therapy in treating UC. Methods： The rats were randomized into a normal control （NC） group, a model control （MC） group, an herb-partitioned moxibustion （HPM） group and an electroacupuncture （EA） group, 8 in each group. The rat models of UC were established by immunological methods combined with local stimulation. The rats in the HPM and EA groups were given herb-partitioned moxibustion and electroacupuncture treatments respectively, once every day, lasting for 14 d. The morphological variations of rat＇s colonic mucosa were observed under light microscope; the colonic mucosal mucin was detected by PAS-AB and HID-AB staining methods; the expression of IGF-1 and SOCS2 was assayed by the immunohistochemical method. Results： In the rat models of UC, ulceration and inflammation of the colon were revealed by light microscope. The concentration of colonic mucosal mucin was reduced （P〈0.01）, while the expression of IGF-1 had an increase （P〈0.01）, and the expression of SOCS2 was reduced （P〈0.01）. After HPM or EA treatment, the pathological injuries of colonic mucosa had improved, the concentration of mucin increased （P〈0.01）, the expression of IGF-1 decreased （P〈0.01）, and the expression of SOCS2 increased （P〈0.01）. Conclusion： The secretion of mucosal mucin in rat UC decreased, the expression of IGF-1 was significantly higher, while the expression of SOCS2 was remarkably lower; both HPM and EA can help improve the damage of colonic mucosa in rat UC, and modulate the secretion of mucin, as well as regulate the expression of IGF-1 and SOCS2 in the colonic mucosa.

Effect of Moxibustion on the Expressions of Protein KGF-1, KGF-2 and IL-6 in Colon of Rats with Ulcerative Colitis

Objective： To observe the effect of moxibustion on the expressions of protein keratinocyte growth factor-1 （KGF-1）, KGF-2, and interleukin-6 （IL-6） in colon of rats with ulcerative colitis （UC）, and to explore the action mechanism of moxibustion in treating UC. Methods： SD rats were randomized into a normal group, a model group, a herbs-partitioned moxibustion group, and a sulfasalazine （SASP） group. The rats in the herbs-partitioned group were treated with herbs-partitioned moxibustion at Tianshu （ST 25） and Qihai （CV 6）, and those in the SASP group were treated by intragastric administration. After interventions, HE staining and light microscope were adopted in observing the histopathological changes of rat＇s colon, and immunohistochemical methods for detecting the expressions of KGF-1, KGF-2, and IL-6 proteins in rat＇s colon. Results： Compared with the model group, the rats＇ colons in the herbs-partitioned moxibustion group and the SASP group were histopathologically improved; compared with the normal group, the expressions of KGF-1, KGF-2, and IL-6 proteins increased significantly in the model group （P〈0.05）; after intervened by herbs-partitioned moxibustion and SASP respectively, the expressions of KGF-1, KGF-2, and IL-6 proteins in rat＇s colon were decreased markedly （P〈0.05）. Conclusion： Both herbs-partitioned moxibustion and SASP can down-regulate the expressions of KGF-1, KGF-2, and IL-6 proteins in rat＇s colon, which might be one of the mechanisms of herbs-partitioned moxibustion and SASP in treating UC.

Protection of gastric mucosa from ethanol induced injury by recombinant epidermal growth factor in rats

AIM To determine whether recombinant human epidermal growth factor (rhEGF) can protect gastric mucosa against ethanol induced injury in rats. METHOD Fifty four SD rats weighing 200g - 500g each were divided into six groups after fasting for 24 hours. Three groups received different doses of oral rhEGF (30, 60 and 120μg·kg -1 ·d -1 ), one group was given cimetidine, one subcutaneous rhEGF (rhEGFⅣ) and one received saline as control. RESULTS Acute gastric dilatation developed in the control and cimetidine groups and bloody gastric juice was found in the control group. The ulcer index was 58 in control group, 53 in rhEGFⅠ, 46 in rhEGFⅡ ( P <0 01) , 11 in rhEGFⅢ ( P <0 01) , 19 in rhEGFⅣ ( P <0 01) , and 39 in cimetidine group ( P <0 05) . CONCLUSION rhEGF protected gastric mucosa against ethanol induced damage. The effect was dose dependent with blood levels of epidermal growth factor (EGF) at a dosage range of 60μg·kg -1 ·d -1 -120μg·kg -1 ·d -1 . It was more effective by injection than via oral route at the same dosage.

Investigating the influence of moxibustion on colonic mucosal barrier in rats with dextran sulfate sodium-induced ulcerative colitis

Objective:To observe the effect of moxibustion on the colonic mucosal barrier of rats with ulcerative colitis(UC)induced by dextran sulfate sodium(DSS).Methods:Forty male Sprague-Dawley rats were randomly divided into a normal group and a modeling group,with 20 rats in each group.Rats in the modeling group were subjected to preparing experimental UC models by drinking 4%DSS for seven consecutive days.Two modeled rats and two normal rats were randomly selected for model identification.After the success of UC model was confirmed,the remaining 18 modeled rats were randomly divided into three groups,a model group,a model+herbal cake-partitioned moxibustion group,and a model+mild moxibustion group,with six rats in each group;the remaining normal rats were randomly divided into three groups,a normal group,a normal+herbal cake-partitioned moxibustion group,and a normal+mild moxibustion group,with six rats in each group.After 7 d of intervention with the herbal cake-partitioned moxibustion or the mild moxibustion,hematoxylin-eosin(HE)staining technique was used to observe the pathological changes of colon tissue under a light microscope;Western blotting and/or immunohistochemical techniques were used to detect the protein expression levels of Occludin,Claudin,junction adhesion molecular 1(JAM1),mucin 2(MUC2),and transforming growth factor beta1(TGF-β1)in rat colon tissue.Results:Compared with the normal group,the colon tissue was severely damaged,the pathological score was significantly increased,and the protein expression levels of Occludin,Claudin,JAM1,MUC2,and TGF-β1 were significantly decreased in the model group(P<0.01);while there were no significant differences in the colonic histopathological score,protein expression levels of Occludin,Claudin,JAM1,MUC2,and TGF-β1 in the normal+herbal cake-partitioned moxibustion group and the normal+mild moxibustion group(P>0.05).Compared with the model group,the model+herbal cake-partitioned moxibustion group and the model+mild moxibustion group showed repaired colon tissue,ulcer healing,significantly reduced pathological score,and significantly increased protein expression levels of JAM1,MUC2,and TGF-β1(P<0.05);the Occludin protein expression level in the colon tissue of the model+mild moxibustion group was increased(P<0.01).Conclusion:Neither herbal cake-partitioned moxibustion nor mild moxibustion influences the colonic histopathology and intestinal mucosal barrier-related protein expression in the normal rats;both herbal cake-partitioned moxibustion and mild moxibustion can up-regulate the protein expression levels of JAM1,MUC2,and TGF-β1 in the colon tissue of UC rats.Mild moxibustion can up-regulate Occludin protein expression.This may be a mechanism of moxibustion in reducing colonic mucosa inflammation in UC.

Erlotinib inhibits progression to dysplasia in a colitis-associated colon cancer model

AIM:To investigate the role of epidermal growth factor receptor(EGFR) in colitis-associated dysplasia using the EGFR tyrosine kinase inhibitor erlotinib.METHODS:Sprague-Dawley rats received trinitrobenzene sulfonic acid(TNBS;30 mg in 50% ethanol,ic),followed 6 wk later by reactivation with TNBS(5 mg/kg,iv) for 3 d.To induce colitis-associated dysplasia,rats then received TNBS(iv) twice a week for 10 wk.One group received erlotinib(10 mg/kg,ip) for 1 wk before the start of the reactivation of the colitis and 2 wk after(21 d);the rest received the vehicle.After rats were euthanized,the colons were removed and analyzed for damage and expression of the EGFR downstream effectors Erk1/2 and c-Myc.RESULTS:Ninety percent of the vehicle-treated animals had dysplasia in any region of the colon.Erlotinib-treated animals had a significant decrease in the incidence of dysplasia compared to vehicle-treated animals in all regions of the colon(50.00% ± 11.47% vs 90.00% ± 10.00% in proximal,P < 0.05;15.00% ± 8.19% vs 50.00% ± 16.67% in mid,P < 0.05;and 20.00% ± 9.17% vs 70.00% ± 15.28% in distal,P < 0.01).Erlotinib-treated animals also had reduced cell proliferation,reduced active Erk1/2,and reduced c-Myc in colon epithelium compared with the vehicle-treated animals.In vitro,erlotinib treatment was shown to markedly decrease c-Myc and pErk1/2 levels in rat epithelial cells.Proliferation of rat epithelial cells was stimulated by epidermal growth factor and inhibited by erlotinib(P < 0.05).CONCLUSION:Erlotinib can decrease the development of colitis-associated dysplasia,suggesting a potential therapeutic use for erlotinib in patients with long-standing colitis.

Oral encapsulated transforming growth factorβ1 reduces endogenous levels:Effect on inflammatory bowel disease

BACKGROUND TreXTAM®is a combination of the key regulatory cytokine transforming growth factor beta(TGFβ)and all trans retinoic acid(ATRA)microencapsulated for oral delivery to immune structures of the gut.It is in development as a novel treatment for inflammatory bowel disease(IBD).AIM To measure TGFβlevels in blood and tissue after oral administration of encapsulated TGFβ.METHODS Animals were orally administered encapsulated TGFβby gavage.Levels of drug substance in blood and in gut tissues at various times after administration were measured by ELISA.RESULTS We made the surprising discovery that oral administration of TreXTAM dramatically(approximately 50%)and significantly(P=0.025)reduced TGFβlevels in colon,but not small intestine or mesenteric lymph nodes.Similarly,levels in rat serum after 25 d of thrice weekly dosing with either TreXTAM,or microencapsulated TGFβalone(denoted as TPX6001)were significantly(P<0.01)reduced from baseline levels.When tested in the SCID mouse CD4+CD25-adoptive cell transfer(ACT)model of IBD,oral TPX6001 alone provided only a transient benefit in terms of reduced weight loss.CONCLUSION These observations suggest a negative feedback mechanism in the gut whereby local delivery of TGFβresults in reduced local and systemic levels of the active form of TGFβ.Our findings suggest potential clinical implications for use of encapsulated TGFβ,perhaps in the context of IBD and/or other instances of fibrosis and/or pathological TGFβsignaling.

Repair effect of diabetic ulcers with recombinant human epidermal growth factor loaded by sustained-release microspheres

In this study the w/o/w extraction–evaporation technique was adopted to prepare poly(lactic-co-glycolic acid) (PLGA) microspheres loading recombinant human epidermal growth factor (rhEGF). The micro-spheres were characterized for morphology by transmission electron microscopy (TEM) and particle size distribution. The release performances, the proliferation effects and therapeutic effects of rhEGF-loaded PLGA microspheres were all studied. The results showed that these spherical micro-spheres had a narrow size distribution and a high drug encapsulation efficiency (85.6%). RhEGF-loaded microspheres enhanced the growth rate of fibroblasts and wound healing more efficiently than pure rhEGF. The number of the proliferating cell nuclear antigen (PCNA) in the epidermis layer with the mi-crosphere treatment was significantly larger than those of the control groups. Overall locally sustained delivery of rhEGF from biodegradable PLGA microspheres may serve as a novel therapeutic strategy for diabetic ulcer repair.

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.

胃灵颗粒对胃溃疡患者Hp根除率、EGF、PGE_(2)的影响

目的:探讨胃灵颗粒对胃溃疡(GU)患者幽门螺杆菌(Hp)根除率、表皮生长因子(EGF)、前列腺素E_(2)(PGE_(2))的影响。方法:选择2021年1月—2023年7月宜都市人民医院103例GU患者,随机分为观察组50例和对照组53例。两组均接受规范抗Hp的四联疗法,观察组在此基础上口服胃灵颗粒,两组均治疗14 d。比较临床疗效、Hp根除率、EGF和PGE_(2)水平,以及药物不良反应。结果:观察组总有效率为100%,高于对照组的86.79%(P<0.05)。观察组Hp根除率高于对照组(P<0.05)。治疗后,观察组EGF、PGE_(2)水平均高于对照组(P<0.05)。两组不良反发生率比较,差异无统计学意义(P>0.05)。结论:胃灵颗粒治疗GU能提高Hp感染根除率,促进胃黏膜分泌EGF、PGE_(2),增强胃黏膜修复功能,疗效显著。

芥菜型油菜类黄酮对UC大鼠结肠黏膜的干预机制

目的探究芥菜型油菜类黄酮对溃疡性结肠炎(UC)大鼠结肠黏膜干预机制。方法将45只SD大鼠分为空白组(10只)和造模组(35只),造模组按随机数表法分为模型组、芥菜型油菜类黄酮低、高浓度组,给药治疗后,进行疾病活动指数(DAI)评分;结肠黏膜损伤指数(CMDI)评分;结肠组织病理学检查;酶联免疫法检测大鼠结肠黏膜肿瘤坏死因子(TNF)-α、白细胞介素(IL)-1β和IL-10的含量;免疫组化法检测黏蛋白2(MUC2)和表皮生长因子(EGFR)的表达。结果与模型组比较,芥菜型油菜类黄酮低、高浓度组DAI评分、CDMI评分、TNF-α、IL-1β含量均降低(P<0.05),IL-10含量及MUC2、EGFR表达水平升高(P<0.05);与低浓度组比较,高浓度组DAI评分、CDMI评分、TNF-α、IL-1β含量降低(P<0.05),IL-10含量及MUC2、EGFR表达水平升高(P<0.05)。HE染色结果显示低、高浓度组大鼠的结肠组织病变程度均有所改善,病理学损伤结果均降低,高浓度组降低更明显。结论芥菜型油菜类黄酮可以通过调节UC大鼠结肠黏膜TNF-α、IL-1β、IL-10的水平,增加MUC2、EGFR蛋白表达来调控肠上皮系统,从而达到修复结肠黏膜的目的。

胃溃疡出血患者胃液PH、EGF、PGE_(2)和胃动素水平与其消化内镜治疗效果及胃肠功能的关系

目的 探讨胃溃疡出血患者胃液PH、表皮生长因子(EGF)和前列腺素E_(2)(PGE_(2))水平与其消化内镜治疗效果及胃肠功能的关系。方法 选取2022年1月至2024年5月于武汉大学中南医院行消化内镜治疗的胃溃疡出血患者67例。对患者消化内镜治疗时收集的胃液中PH、EGF和PGE_(2)水平进行检测。评价患者的疾病治疗有效率。比较不同疗效患者的胃液PH、EGF和PGE_(2)水平,并采用ROC曲线下面积评价其胃液PH、EGF和PGE_(2)水平对消化内镜治疗效果的早期评估效能。收集患者术后肠鸣音恢复时间、肛门排气时间、止血时间、住院时间、溃疡愈合时间等胃肠功能和恢复指标,并通过Pearson相关法分析其胃液PH、EGF和PGE_(2)水平与术后胃肠功能和恢复指标的关系。结果 胃溃疡出血患者67例的临床治疗有效率为71.64%(48/67)。与治疗有效患者比较,治疗无效患者的胃液PH、EGF和PGE_(2)水平均较低(P<0.05)。ROC曲线分析结果显示,胃液PH、EGF和PGE_(2)水平对消化内镜治疗效果均具备一定的预测价值,以三者联合检测的早期评估效能最佳。患者术后肠鸣音恢复时间、肛门排气时间、止血时间、住院时间、溃疡愈合时间分别为(7.16±2.38)min、(26.96±6.41)h、(20.66±4.37)h、(4.52±1.16)d和(23.14±4.18)d。Pearson相关分析结果显示,胃溃疡出血患者胃液PH、EGF和PGE_(2)水平与其术后肠鸣音恢复时间、肛门排气时间、止血时间、住院时间、溃疡愈合时间等胃肠功能和恢复指标均呈负相关(P<0.05)。结论 胃溃疡出血患者胃液PH、EGF和PGE_(2)水平与其消化内镜治疗效果、术后胃肠功能和恢复情况均相关,可作为胃溃疡出血内镜治疗患者疗效的早期评估参考指标。

封闭式负压引流联合三种不同方法治疗糖尿病足溃疡的疗效分析

目的对比封闭式负压引流(VSD,vacuum sealing drainage)联合重组人酸性成纤维细胞生长因子(rh-aFGF,recombinant human acidic fibroblast growth factor)、封闭式负压引流联合重组人表皮生长因子(rhEGF,recombinant human epidermal growth factor)、封闭式负压引流联合抗生素骨水泥治疗糖尿病足溃疡(diabetic foot ulceration,DFU)的临床效果。方法回顾性分析2021年1月-2023年5月湖南中医附一医院收治的DFU患者126例,根据治疗情况分为VSD联合rh-aFGF组、VSD联合rhEGF组、VSD联合抗生素骨水泥组,每组各42例。比较三组愈合效果以及创面愈合率和创面完全愈合时间。随访6个月,比较三组患者瘢痕面积。结果三组愈合效果、愈合率无统计学意义(P>0.05);VSD联合rhEGF组和VSD联合rh-aFGF组创面完全愈合时间均短于VSD联合抗生素骨水泥组(P<0.05),但VSD联合rhEGF组和VSD联合rh-aFGF组创面完全愈合时间差异无统计学意义(P>0.05)。6个月随访结果显示,VSD联合rhEGF组和VSD联合rh-aFGF组瘢痕面积均小于VSD联合抗生素骨水泥组(P<0.05),但VSD联合rhEGF组和VSD联合rh-aFGF组瘢痕面积差异无统计学意义(P>0.05)。结论VSD联合rh-aFGF、rhEGF、抗生素骨水泥均是治疗DFU的有效方法,VSD联合rh-aFGF和rhEGF对促进创面愈合和缩小瘢痕面积效果相当,且均优于VSD联合抗生素骨水泥。

美沙拉秦介导TGF-β1/Smad信号通路减轻脂多糖诱导的结肠上皮细胞炎症及凋亡

目的:探讨美沙拉秦(MS)对脂多糖(LPS)诱导的结肠炎(UC)模型细胞增殖、凋亡和炎症损伤的作用,研究转化生长因子-β1(TGF-β1)/Smad信号通路在其中发挥的功能。方法:体外培养人结肠上皮细胞NCM-460,LPS处理诱导UC模型,分为Con组(不做处理)、LPS组(1 mg/L LPS处理)、MS组(0.1、0.2、0.4 mg/L MS+1 mg/L LPS共处理)及inhibitor组(10μmol/L TGF-β1/Smad信号通路抑制剂LY2109761+0.2 mg/L MS+1 mg/L LPS共处理)。分别用倒置显微镜、EdU法、Hoechst 33258染色法、ELISA和Western blot检测不同处理组NCM-460细胞形态、增殖、凋亡、炎症因子分泌水平及TGF-β1/Smad通路关键蛋白表达。结果:LPS处理导致NCM-460细胞增殖率及Smad7蛋白水平较Con组显著下降,而凋亡细胞数、炎症因子TNF-α、IL-6、可溶性白细胞介素-2受体(sIL-2R)释放量以及TGF-β1、p-Smad2、p-Smad3蛋白表达显著增加(P<0.05);MS显著扭转LPS诱导的上述作用,且呈一定剂量依赖性(P<0.05)。与0.2 mg/L MS组相比,inhibitor组NCM-460细胞增殖率和Smad7表达显著增加,而凋亡细胞数、TNF-α、IL-6、sIL-2R分泌水平以及TGF-β1、p-Smad2、p-Smad3蛋白水平显著降低(P<0.05)。结论:MS可缓解LPS诱导的NCM-460细胞凋亡和炎症反应,该保护作用可能与TGF-β1/Smad信号通路抑制有关。

骨膜牵张术联合生长因子治疗糖尿病足溃疡

目的为了进一步评估胫骨骨膜牵张术联合人表皮生长因子(5万IU/10 g)外用治疗糖尿病足溃疡的疗效,我们开展了本次研究,以期为医生治疗糖尿病足溃疡提供参考。方法对2021年1月至2023年10月在我院烧伤整形外科采用胫骨骨膜牵张术联合人表皮生长因子(5万IU/10 g)外用治疗的30例糖尿病足溃疡患者进行回顾性分析。通过对比患者术前术后的患侧足趾血氧饱和度、患足足部皮温、患足踝肱指数及糖尿病足创面愈合情况来评价治疗方法的疗效。结果患者术前足趾血氧饱和度为(79.97±1.44)%,术后足趾血氧饱和度为(92.32±1.70)%,糖尿病足溃疡患者经过胫骨骨膜牵张术联合人表皮生长因子(5万IU/10 g)外用治疗的后足趾血氧饱和度明显改善(P<0.05)。患者术前患足足部皮温为(28.05±0.63)℃,术后患足足部皮温为(30.83±0.70)℃,经过治疗的糖尿病足溃疡患者的术后患足足部皮温明显提高(P<0.05)。患者术前患足踝肱指数为0.65±0.04,术后患足踝肱指数为0.73±0.02,经过治疗的糖尿病足溃疡患者的患足踝肱指数明显改善(P<0.05)。经过治疗,糖尿病足溃疡患者的创面完全愈合率达93.33%。结论胫骨骨膜牵张术联合人表皮生长因子(5万IU/10 g)外用治疗糖尿病足溃疡的治疗效果显著,对患者足趾血氧饱和度、患足足部皮温、患足踝肱指数有明显改善,创面完全愈合率高,值得在糖尿病足溃疡的临床治疗中推广应用。

理中汤联合常规西药治疗对胃溃疡患者胃液表皮生长因子及胃黏膜表皮生长因子受体表达的影响

目的:探讨理中汤联合常规西药治疗对胃溃疡患者胃液表皮生长因子(epidermal growth factor,EGF)及胃黏膜表皮生长因子受体(epidermal growth factor receptor,EGFR)表达的影响。方法:选取2020年10月—2021年11月湖北省松滋市中医院治疗的90例患者作为研究对象,按照随机数表法分为观察组和对照组,每组各45例。对照组患者使用常规西药治疗,观察组患者在对照组治疗基础上加用理中汤进行治疗,观察两组患者治疗效果、胃液EGF水平、胃黏膜EGFR水平(积分吸光度值、阳性细胞百分率)。结果:观察组患者疗效优于对照组,差异有统计学意义(χ^(2)=4.406,P<0.05)。治疗后,两组患者胃液EGF水平均高于治疗前,差异有统计学意义(t=3.047,P<0.05);治疗后,两组患者积分吸光度值、阳性细胞百分率均高于治疗前,差异有统计学意义(t=7.077、5.121,P<0.05)。结论:理中汤联合常规西药治疗对胃溃疡患者治疗效果更好,可促进胃液EGF与胃黏膜EGFR表达。

中药浸浴联合重组表皮细胞在压疮患者中的应用效果

目的探究中药浸浴联合重组表皮细胞在压疮患者中的应用效果。方法选取2022年1月至2023年6月贵溪市中医院收治的60例压疮患者作为研究对象,采用随机数字表法将其分为对照组与观察组,每组各30例。对照组采用重组表皮细胞生长因子方法,观察组在对照组基础上使用中药浸浴,分析两组干预后的创面愈合有效率、炎症因子水平、症状缓解时间、转化生长因子(TGF-β1)、血管内皮生长因子(VEGF)表达水平以及不良反应发生率。结果治疗前两组的TGF-β1、VEGF表达水平、炎症因子水平比较,差异无统计学意义(P>0.05)。观察组治疗后TGF-β1、VEGF表达水平以及炎症因子水平均低于对照组,差异有统计学意义(P<0.05)。观察组症状缓解时间、不良反应发生率低于对照组,差异有统计学意义(P<0.05)。观察组创面愈合总有效率高于对照组,差异有统计学意义(P<0.05)。结论在临床上对压疮创面修复中采用重组表皮细胞生长因子联合中药浸浴效果更好,患者创面愈合有效率提高,症状缓解时间缩短,不良反应发生率少,安全性高且效果显著,临床应用价值高。

清胃泻心汤联合四联疗法对幽门螺杆菌阳性胃溃疡患者的影响

目的:分析清胃泻心汤联合四联疗法对幽门螺杆菌阳性胃溃疡患者的影响。方法:选取2020年3月—2023年4月浦城县中医医院收治的120例幽门螺杆菌阳性胃溃疡患者为研究对象。根据随机数表法将其分为中西医组与单西医组,各60例。单西医组采用四联疗法,中西医组采用四联疗法联合清胃泻心汤。比较两组临床疗效,治疗前后胃黏膜指标、胃黏膜情况及中医症候积分。结果:中西医组总有效率为91.67%,高于单西医组的76.67%,差异有统计学意义(P<0.05)。治疗后,两组胃黏膜表皮生长因子(EGF)、表皮生长因子受体(EGFR)水平均升高,中西医组EGF和EGFR水平均高于单西医组,差异有统计学意义(P<0.05)。治疗后,两组嗳气、反酸、胃脘胀满评分均降低,中西医组嗳气、反酸、胃脘胀满评分均低于单西医组,差异有统计学意义(P<0.05)。治疗后,两组腺体形态、炎症细胞浸润程度、腺体密度、黏膜厚度变化评分均降低,中西医组腺体形态、炎症细胞浸润程度、腺体密度、黏膜厚度变化评分均低于单西医组,差异有统计学意义(P<0.05)。结论:清胃泻心汤联合四联疗法能有效提高幽门螺杆菌阳性胃溃疡患者临床疗效,并改善胃黏膜功能。