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1.
目的 观察回阳生肌脂质体凝胶促进慢性皮肤溃疡愈合的作用,探讨其治疗阴证疮疡的药理机制.方法 SD大鼠80只随机分为4组:正常组、模型组、传统回阳生肌膏治疗组(传统组)和回阳生肌脂质体凝胶治疗组(脂质体组).采用"激素干预-皮肤缺损-细菌感染"复合因素叠加法制备慢性皮肤溃疡大鼠模型.观察大鼠一般生活行为,检测大鼠血清肿瘤坏死因子-α(TNF-α)及白细胞介素-8(IL-8)含量,免疫组化法检测疮疡区组织中增殖细胞核抗原(PCNA)和血管内皮生长因子(VEGF)表达,并行图像分析.结果 与正常组比较,模型组大鼠血清中TNF-α和IL-8含量显著升高,溃疡区组织中PCNA表达增多、VEGF表达减少(P<0.05).与模型组比较,脂质体组大鼠血清中TNF-α和IL-8含量均呈下降的趋势(P<0.05或P<0.01).脂质体组大鼠溃疡面可见丰富的新生毛细血管且向伤口处聚集分布,VEGF在再生的血管壁胞浆表达阳性,真皮层中见到较多PCNA阳性细胞,而且还在新生血管内皮细胞中可见到棕黄色颗粒表达.与模型组比较,脂质体组 PCNA和VEGF表达均有统计学差异(P<0.05).结论 回阳生肌脂质体凝胶具有促进慢性皮肤溃疡愈合的作用,其作用机制可能与该药促进慢性皮肤溃疡创面细胞增殖、调动血管内皮生长因子参与血管再生、减轻机体炎症反应有关.  相似文献   

2.
目的 探讨迪康凝胶对烫伤大鼠创面愈合的效果及作用机制.方法 将SD大鼠随机分为模型组、美宝烫伤膏组、迪康凝胶组,3组均采用超级控温烫伤仪,造背部深Ⅱ度烫伤.模型组不给药,其余给药1次/d,连续21 d.连续考察21 d内创面愈合情况及创面病理组织形态.ELISA法检测组织TNF-α和IL-8及Ⅰ 、Ⅲ型胶原.RT-PCR检测组织TNF-α和IL-8表达水平.结果 与模型组比较,迪康凝胶组愈合时间缩短(P<0.05,P<0.01),创伤愈合率增高(P<0.05,P<0.01),差异有统计学意义.组织学观察证明,迪康凝胶具有良好的组织损伤修复作用.ELISA检测表明,烫伤后两药物组创面组织TNF-α和IL-8含量均明显低于模型组(P<0.05,P<0.01);而胶原Ⅰ 、Ⅲ组织含量均高于模型组.RT-PCR检测表明,两药物组组织TNF-αmRNA和IL-8 mRNA表达水平均与其蛋白浓度水平基本一致.结论 迪康凝胶能促进大鼠皮肤烫伤后创面愈合,是治疗烫伤创面的有效药物.  相似文献   

3.
目的观察象皮生肌膏对肛瘘术后模型大鼠创面中白介素-8(Interleukin-8,IL-8)、肿瘤坏死因子-α(Tumor necrosis factor alpha,TNF-α)蛋白表达的影响。方法80只SD大鼠随机分成假手术组、模型组、象皮生肌膏治疗组(简称象皮生肌膏组)、湿润烧伤膏对照组(简称湿润烧伤膏组),每组20只,假手术组采用生理盐水治疗,象皮生肌膏组、湿润烧伤膏组分别采用相应的药物治疗。动态观察4组大鼠创面愈合率、水肿及第5、10天大鼠创面组织中IL-8、TNF-α蛋白水平表达情况。结果象皮生肌膏组与湿润烧伤膏组治疗后的第7、10、14天大鼠创面愈合率明显高于模型组(P<0.01)。象皮生肌膏组治疗后的第7、10、14天大鼠创面愈合率明显高于湿润烧伤膏组(P<0.05)。象皮生肌膏组与湿润烧伤膏组治疗后的第3、7、10、14天大鼠创面水肿积分明显低于模型组(P<0.01)。象皮生肌膏组治疗后的第3、7、10、14天大鼠创面水肿积分明显低于湿润烧伤膏组(P<0.05)。象皮生肌膏组与湿润烧伤膏组治疗后的第5、10天大鼠创面中IL-8、TNF-α蛋白表达水平明显低于模型组(P<0.01)。结论象皮生肌膏明显提高肛瘘术后模型大鼠创面的愈合率,降低大鼠创面水肿情况,降低大鼠创面中IL-8、TNF-α蛋白表达水平,象皮生肌膏促肛瘘术后创面愈合及减轻创面水肿的机制可能与降低创面中的炎症因子IL-8、TNF-α蛋白表达水平有关。  相似文献   

4.
目的制备芦荟凝胶的胶原-壳聚糖-硫酸软骨素三元膜,研究其在大鼠皮肤深Ⅱ度烧伤创面愈合过程中的作用。方法制备芦荟凝胶的胶原-壳聚糖-硫酸软骨素三元膜。取大鼠60只,随机分为模型对照组、湿润烧伤膏组、三元膜组,每组20只。造成深Ⅱ度烧伤模型后,测量大鼠烧伤后皮肤创面平均愈合时间及第1、3、7、14天创面愈合率,检测烧伤后第1、14天皮肤创面组织中超氧化物歧化酶(SOD)和丙二醛(MDA)含量、血清中肿瘤坏死因子(TNF-α)含量并作统计学分析。结果与模型对照组相比,三元膜组能缩短烧伤大鼠皮肤创面愈合的时间(P0.05),提高第3、7、14天的创面愈合率(P0.01)。烧伤后第14天,与模型对照组相比,三元膜组皮肤创面组织中SOD含量升高(P0.01),MDA含量降低(P0.01),血清中TNF-α含量降低(P0.01)。以上指标,三元膜组和烧伤膏组比较差异无统计学意义(P0.05)。结论芦荟凝胶的胶原-壳聚糖-硫酸软骨素三元膜可通过清除氧自由基、减少促炎症因子的生成,从而促进大鼠皮肤深Ⅱ度烧伤的愈合。  相似文献   

5.
目的 探讨生肌玉红胶原海绵促进肉芽生长与创面愈合的可能机理.方法 修饰后胶原海绵、生肌玉红膏、生肌玉红胶原海绵敷于大鼠背部机械性皮肤全层创面,控制组以凡士林纱布覆盖,于造模后3、7、14d,测试创面愈合率、肉芽组织中Ⅰ、Ⅲ胶原含量、bFGF阳性细胞数、羟脯氨酸含量.结果 造模第3天时,羟脯氨酸含量、bFGF阳性细胞数、I型胶原含量,生肌玉红胶原海绵组均显著高于生肌玉红膏组及控制组;第7天时,实验组各指标均显著高于控制组,其中创面愈合率、Ⅰ型胶原含量、bFGF阳性细胞数、羟脯氨酸含量,生肌玉红胶原海绵组显著高于生肌玉红膏组;第14天时,Ⅰ型胶原含量各组无显著差异,创面愈合率、bFGF阳性细胞数、Ⅲ型胶原含量、羟脯氨酸含量,生肌玉红胶原海绵组显著高于控制组.结论 生肌玉红胶原海绵促进创面愈合与减少瘢痕形成的机制之一可能是调节创面bFGF水平与调节创面Ⅰ、Ⅲ型胶原含量实现的.  相似文献   

6.
目的 研究迪康凝胶和康惠尔清创胶对大鼠烫伤创面的治疗效果。方法 将SD大鼠随机分为模型组、康惠尔清创胶组和迪康凝胶组,均造背部深Ⅱ度烫伤。两药物组连续治疗21天,每天1次,模型组自然愈合。考察创面皮肤的愈合效果,检测皮肤组织IL-8、TNF-α、胶原Ⅰ型、Ⅲ型及血清EGF含量以及组织IL-8、TNF-α表达水平。结果 迪康凝胶可有效修复损伤组织,促进真皮生长,促进创面愈合;较模型组,可明显降低创面皮肤组织TNF-α和IL-8(P<0.05,P<0.01),提高Ⅰ、Ⅲ型胶原含量(P<0.05,P<0.01),明显提升血清EGF (P<0.05);各组TNF-α和IL-8的mRNA表达水平均与其组织含量水平基本一致。迪康凝胶和康惠尔清创胶相比,差异无统计学意义(P>0.05)。结论 迪康凝胶能有效促进大鼠皮肤烫伤创面的愈合。  相似文献   

7.
目的:通过将生肌红粉膏、生肌玉红膏、凡士林的疗效进行对比,进而阐述生肌红粉膏促进家兔感染性创面愈合的作用机制。方法:将健康的普通大耳白兔12只,按照改良付小兵全层皮肤缺损法制成创伤感染性动物体表溃疡模型,分别予生肌红粉膏、生肌玉红膏及凡士林换药,分别测定换药前、换药后第3、71、4天时创面分泌物中pH值、蛋白含量及各个阶段创面面积减小率,以探讨生肌红粉膏促进创面愈合的作用机理。结果:各组分泌物pH值在换药前、换药第3、71、4天组间比较无显著性差异(P>0.05),但其均呈逐渐下降的趋势,且生肌红粉膏在术后创面的pH值相对较低;各组创面蛋白含量在换药前、换药第3、71、4天,均呈逐渐下降的趋势,但换药第3、7天生肌红粉膏组分泌物蛋白含量相对最高;从各组创面面积减小率看,生肌红粉膏组快于生肌玉红膏组,生肌玉红膏组快于凡士林组。结论:生肌红粉膏可能通过酸化创面、提高创面蛋白含量、增强抗感染作用,达到促进创面快速愈合的目的。  相似文献   

8.
目的:探讨生肌玉红明胶海绵促进肉芽生长的可能机理。方法:将修饰后明胶海绵、生肌玉红膏、生肌玉红明胶海绵敷于大鼠背部机械性皮肤全层创面,控制组以凡士林纱布覆盖,于造模后第3、7、14天,测试创面愈合率、肉芽组织中Ⅰ、Ⅲ胶原含量、bGFG阳性细胞数、羟脯氨酸含量。结果:造模第3天时,羟脯氨酸含量、bFGF阳性细胞数、Ⅰ型胶原含量,生肌玉红明胶海绵组均显著高于生肌玉红膏组及控制组;第7天时,各实验组指标均显著高于控制组,其中创面愈合率、Ⅰ型胶原含量、bGFG阳性细胞数、羟脯氨酸含量,生肌玉红明胶海绵组显著高于生肌玉红膏组;第14天时,Ⅰ型胶原含量各组无显著差异,bFGF阳性细胞数显著低于对照组,其余各指标均显著优于生肌玉红膏组。结论:生肌玉红明胶海绵通过调节创面bFGF水平,Ⅰ、Ⅲ型胶原含量,促进创面肉芽生长,有利愈合,减少瘢痕,疗效优于传统生肌玉红膏。  相似文献   

9.
目的:研究重组人血小板源生长因子(rhPDGF)凝胶对糖尿病溃疡大鼠创面愈合及创面中炎症反应、血管新生的影响。方法:选择清洁级雄性Wistar大鼠作为研究对象,制作糖尿病溃疡模型后随即分为模型组、低剂量组和高剂量组,分别给予空白凝胶、30μg/g rhPDGF凝胶剂、100μg/g rhPDGF凝胶剂干预。干预后4、6、8、10d时,观察溃疡创面的面积;6、10天时,收集创面组织并检测炎症反应分子、血管新生分子的表达量。结果:干预后4、6、8、10d时,低剂量和高剂量组大鼠的溃疡创面面积均显著小于模型组,高剂量组大鼠的溃疡创面面积均显著小于低剂量组;干预后6、10d时,低剂量和高剂量组大鼠溃疡创面中TNF-α、IL-2的含量均显著低于模型组,VEGF、eNOS、NO的含量均显著高于模型组;高剂量组大鼠溃疡创面中TNF-α、IL-2的含量均显著低于低剂量组,VEGF、eNOS、NO的含量均显著高于低剂量组。结论:rhPDGF凝胶对糖尿病溃疡大鼠的创面愈合具有促进作用,同时能够抑制炎症反应、促进血管新生。  相似文献   

10.
目的探讨生肌巴布贴对糖尿病皮肤溃疡的修复作用。方法将40只小鼠全部建立糖尿病皮肤溃疡模型后,随机分为生肌巴布贴组、一效膏组、康复新液组、模型组四组,每组10只。生肌巴布贴组予生肌巴布贴(大小约2.0 cm×2.0 cm)贴于创面;一效膏组予一效膏均匀涂抹于创面,覆盖创面厚度约0.2 cm;康复新液组予康复新液均匀喷洒于创面;模型组以生理盐水涂抹于创面。各组于治疗后定期肉眼观察局部组织愈合情况,计算创面收缩率,并在治疗后第21天进行病理组织学检查,免疫组化检测血管内皮生长因子(VEGF)、纤维结合蛋白(FN)在局部组织中的表达情况。结果与模型组比较,生肌巴布贴组、一效膏组与康复新液组小鼠创面收缩率在用药后第5、11、19天均高于模型组,差异有统计学意义(P0.05);生肌巴布贴组同一效膏组、康复新液组相比,差异无统计学意义(P0.05)。治疗后第21天VEGF、FN表达情况与模型组相比,生肌巴布贴组、一效膏组和康复新液组在组织中单位面积阳性表达的平均光密度值较高(P0.001)。生肌巴布贴组与一效膏组、康复新液组间比较差异无统计学意义(P0.05)。结论新型制剂生肌巴布贴在促进创面愈合方面疗效与传统制剂一效膏相当。  相似文献   

11.
Objective To observe blood pressure change with age in salt-sensitive teenagers whose salt sensitivity were determined by repeated testing.Methods Salt sensitivity was determined through intravenous infusion of normal saline combined with volume-depletion by oral diuretic furosemide in 55 teenagers. After five years, salt sensitivity was re-examined and subject blood pressure was followed up. Blood pressure changes in salt-sensitive teenagers were compared to that of non-salt sensitive teenagers over five years.Results After 5 years, the repetition rate of salt sensitivity determined by intravenous saline loading is 92.7%. In teenagers with salt sensitivity on the baseline, both the systolic blood pressure increments and increment rates were much higher than non-salt sensitive teenagers (12.7±12.1 mmHg vs. 2.8±5.2 mmHg, P< 0.01; 12.2%± 12.0% vs. 2.5% ±4.4%, P< 0.001,respectively). There was a similar trend for diastolic blood pressure (8.4 ± 6.4 mmHg vs. 3.7 ± 6.4 mmHg, P = 0.052; 13.2% ±10.6 % vs. 6.8%± 10.1%, P = 0.053, respectively).Conclusions Salt sensitivity determined by intravenous saline loading showed good reproducibility. Blood pressure increments with age were much higher in salt-sensitive teenagers than non-salt sensitive teenagers, especially in terms of systolic blood pressure.  相似文献   

12.
Increasing maternal age is the only etiological factor unequivocally linked to Down's syndrome in humans. The occurrence rate of newborns with Down's syndrome is about 1/220 in women over 35 years old. However, the occurrence rate in embryos fertilized in vitro, of the elder woman is unclear. Using FISH we screened the number of chromosome 21 in preimplanted embryos of 5 elderly women (average age, 38.4 years) to study the feasibility and necessity of screening trisomy 21 in embryos in patients over 35 years old at the in vitro fertilization (IVF) center.  相似文献   

13.
Real-time three-dimensional echocardiography (RT3DE)is a new ultrasound technique that enables dynamic threedimensional visualization and quantification of the heart in real time. Investigation of feasibility and methodology of RT3DE in determining left ventricular (LV) and right ventricular (RV) volumes, RT3DE was performed in 35 normal adults using Philips SONOS 7500 system with a 2-4 MHz matrix array transducer. The 60°×60° "pyramid" volume database was obtained and analyzed on a TomTec echo workstation. Both LV and RV volumes were calculated with four 3DE methods (i.e. apical 2, 4, 8, and 16-plane) through manually tracing ventricular endocardial borders in end diastole and end systole. Stroke volumes were then calculated. LV volume was also measured by 2DE Simpson's rule using GE VIVID 7 ultrasound machine.  相似文献   

14.
A clinical guideline for the therapeutic interventions of integrative medicine may be defined as a written document which states a series of recommendations on therapeutic interventions of integrative medicine for a special disease or condition. The guideline may provide assistance to medical professionals in making clinical decisions aimed at improving the clinical outcome of patients and reducing the costs of medical care(~'4~. Recommendations issued by a guideline should be based on the best available evidence in both Western and Chinese medicine. For fulfilling this purpose, the development of clinical guidelines for therapeutic interventions in the field of integrative medicine should follow scientific principles and undergo a rigorous processes.  相似文献   

15.
Objective:To probe into the influence of changes of ovarian hormones on the pathogenesis of the specific sub-type premenstrual syndrome(PMS)and reveal partial microcosmic mechanisms of adverse flow of liver-qi.Methods:Estradiol(E2)and progesterone(P)levels in serum were determined at different phases of menstrual cycle by radioimmunoassay.Results:In the group of PMS with adverse flow of liver-qi.the secretive peak value Of E2 and P at the follicular phase significantly decreased,and the secretive peak value at the luteal phase did not come into being.Conclusions:Low E2 and P secretive peak at the follicular phase and absence of secretive peak at the luteal phase is one of the microcosmic mechanisms of PMS with adverse flow of liver-qi.One of the pathophysiologic mechanisms of specific sub-type PMS is probably the continuous low level of E2and P.  相似文献   

16.
Journal of Nanjing Medical University (English Edition) JNMU, sponsored by Nanjing Medical University, was established in 1987. It is a bimonthly comprehensive English medical journal published locally and abroad.Since 2007, Journal of Nanjing Medical University (English Edition )was granted Elsevier the full publishing and distribution rights worldwide for the Electronic Edition, excluding the People's Republic of China.  相似文献   

17.
Objective: To evaluatel the value of D-dimers in patients with acute aortic dissection (AAD). Methods: This study consisted of 16 patients with AAD and 27 non-AAD patients. Serum D-dimets were measured by Sta-Liatest D-DI immunoturbidimetric assay. Results: D-dimer level was higher (P < 0.001) in patients with AAD(7.91 ± 5.52 μg/ml) than that in non- AAD group(1.57±1.24 μg/ml). D-dimer was positive (>0.4 μg/ml) in all patients with AAD and in 10 control group patients (37%). Among patients with acute AAD, D-dimers tended to be higher in Stanford A than in Stanford B (8.67 ± 4.31 μg/ml vs. 3.24±1.27 μg/ml, P <0.01). D-dimer values tended to be higher in more extended disease(3.84 ± 1.65 μg/ml, 8.57 ± 3.58 μg/ml and 11.87 ± 5.69 μg/ml in thoracic aorta, thoracic and abdominal aorta, thoracic and abdominal aorta and iliacal arteries, respectively, P < 0.05 for both 8.57 ± 3.58 and 11.87 ± 5.69 vs. 3.84 ± 1.65 ). Including the control group into the analysis, we found a sensitivity of 100%, a negative predictive value of 100%, and a specificity of 66% and a positive predictive value of 64% for D-dimer in diagnosis of AAD in our patients with suspected AAD. Conclusion: D-dimer was elevated in patients with AAD. A negative D-dimer test result could be useful in excluding AAD.  相似文献   

18.
Objective: To set up a simple and reliable rat model of combined liver-kidney transplantation. Methods: SD rats served as both donors and recipients. 4℃ sodium lactate Ringer's was infused from portal veins to donated livers,and from abdominal aorta to donated kidneys, respectively. Anastomosis of the portal vein and the inferior vena cava (IVC) inferior to the right kidney between the graft and the recipient was performed by a double cuff method, then the superior hepatic vena cava with suture. A patch of donated renal artery was anastomosed to the recipient abdominal aorta. The urethra and bile duct were reconstructed with a simple inside bracket. Results: Among 65 cases of combined liver-kidney transplantation, the success rate in the late 40 cases was 77.5%. The function of the grafted liver and kidney remained normal. Conclusion: This rat model of combined liver-kidney transplantation can be established in common laboratory conditions with high success rate and meet the needs of renal transplantation experiment.  相似文献   

19.
Objective To measure Derpl and Blot5 allergen levels in asthmatics' homes in Hongkong.Methods Seventy houses were enrolled for a mite indoor environment study. Dust samples were obtained from two sites of each patients' house: bed and floor. Derpl and Blot5 levels were quantified by a two-site monoclonal antibody-based ELISA technique.Results The levels of Derpl allergens found in bed (geometric mean (GM) 3.43 μg/g of dust; 95%CI, 1.89-4.96 μg/g)and on the floor (GM 1.12 μg/g of dust; 95%CI, 0.71-1.53 μg/g) indicated significant differences (P=0.005). However, the levels of Blot5 allergens found in bed (GM 19.00 μg/g of dust; 95%CI, 0.89-38.90 μg/g) and on the floor (GM 6.14 μg/g of dust; 95%CI, 0.40-11.90 μg/g) showed no statistically significant difference. In addition, in regards to the exposure index for Derpl and Blot5 allergens found in bed and on the floor, 17.6% in bed and 8.6% on the floor had levels of Blot5 ≥ 10 μg/g of dust, higher than those obtained for Derp1 (7.2% and 0% in bed and on the floor respectively, P< 0.05); higher percentages in bed and on the floor (25.0% and 35.7%) were observed for levels of Blot5 =0 μg/g of dust as compared with Derpl in bed and on the floor (4.3% and 14.5% respectively, P< 0.05).Conclusions Derpl and Blot5 are the major allergens found in this regional study, Blot5 is a more potent allergen in Hongkong, probably reflecting the high level of exposure to Blomia tropicalis (Bt). Bt and Dermatophagoides pteronyssinus (Dp) allergens should be included for precise diagnosis and effective immuno-therapeutic treatment of mite allergy in Hongkong.  相似文献   

20.
ANTI-PROLIFERATION EFFECT OF ORIDONIN ON HL-60 CELLS AND ITS MECHANISM   总被引:4,自引:0,他引:4  
Objcetive To investigate the anti-proliferation effect of oridonin on leukemic HL-60 cells and its mechanism. Methods HL-60 cells in vitro in culture medium were given different concentrations of oridonin. The inhibitory rate of cells were measured by microculture tetrazolium (MTT) assay, cell apoptotic rate was detected by flow cytometry (FCM), morphology of cell apoptosis was observed by hoechst 33258 fluorescence staining, and the activity of telomerase was detected using telomere repeat amplification protocol (TRAP) PCR-ELISA before and after apoptosis occurred. Results Oridonin could decrease telomerase activity, inhibit growth of HL-60 cells, and cause apoptosis significantly. The suppression was both in time- and dose-dependent manner. Marked morphological changes of cell apoptosis including condensation of chromatin and nuclear fragmentation were observed clearly by hoechst 33258 fluorescence staining especially after cells were treated 48-60 hours by oridonin. Conclusions Oridonin has apparent anti-proliferation and apoptotic effects on HL-60 cells in vitro, decreasing telomerase activity of HL-60 cells may be one of its most important mechanisms. These results will provide strong laboratory evidence of oridonin for clinical treatment of acute leukemia.  相似文献   

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