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1.
安定-氯胺酮对烧伤小鼠肝组织糖皮质激素受体的影响   总被引:14,自引:1,他引:13  
目的:研究安定-氯胺酮复合麻醉对伤小鼠肝组织糖皮质激素受体的影响,初步探讨其对创伤应激的调节作用。方法:雄性BALB/c小鼠,随机分为正常对照组、烧伤对照组、麻醉对照组、预处理组及后处理组。麻醉采用安定-氯胺酮复合麻醉,背部15%-20%Ⅲ度烧伤。烧伤后4h测定血清皮质酮浓度,用Western blotting在蛋白质水平测定肝组织糖皮质激素受体。结果:烧伤对照组血清皮质酮浓度明显升高,肝组织糖皮质激素受体明显降低。预处理组与后处理组血清皮质酮浓度均低于烧伤对照组,肝组织糖皮质激素受体与正常对照组相差不明显,预处理组与后处理组相关不显著。结论:烧伤应激引起小鼠血清皮质酮明显升高,其受体在蛋白质水平明显降低。安定-氯胺酮复合麻醉对其具有一定的调节作用。  相似文献   

2.
目的 研究烧伤小鼠 2 4h内肝组织糖皮质激素受体 (GR)时相变化特点 ,初步探讨安定 氯胺酮麻醉对创伤应激的调控作用。方法 将 80只BALB/C小鼠随机分为正常对照组、麻醉对照组、烧伤组、预处理组 (麻醉后 15min烧伤 )及后处理组 (烧伤后 15min麻醉 )。烧伤组给予背部Ⅲ°15 %~ 2 0 %烧伤 ,伤后 2 ,4,6 ,12 ,2 4h取血和肝脏 ;麻醉对照组、预处理组及后处理组均采用安定 氯胺酮麻醉 ,烧伤或麻醉后 4h取血和肝脏。测定血清皮质酮浓度 ,采用Westernblot在蛋白水平测定肝组织GR。结果 烧伤后小鼠血清皮质酮浓度明显升高 ,4h达到高峰 ;肝组织GR明显降低 ,6h降至最低。安定 氯胺酮麻醉明显抑制烧伤应激引起的血清皮质酮和肝组织GR的变化 ,甚至烧伤后麻醉 ,也有同样的作用。结论 烧伤应激引起小鼠血清皮质酮水平明显升高 ,其受体在蛋白水平显著降低。安定 氯胺酮麻醉对其具有抑制作用。  相似文献   

3.
杨萍  谭冠先  倪玉霞 《微创医学》2005,24(4):453-455
目的研究氯胺酮、芬太尼、咪唑安定及异丙酚对TNF-α/IL-10平衡的影响.方法动物按配伍组设计分为5组,分别为生理盐水对照组、氯胺酮组、芬太尼组、咪唑安定组和异丙酚组,麻醉1 h后注射LPS,分别在麻醉前(T0)、注射LPS前(T1)、注射LPS后1 h(T2)、2 h(T3)、4 h(T4)抽取静脉血用ELISA法测血清中TNF-α开始和IL-10的水平计算TNF-α/IL-10比值.结果除了异丙酚组外,其他三组TNF-α/L-10在时点T2都达到峰值并下降,在注射LPS后氯胺酮、芬太尼和咪唑安定TNF-α/IL-10的比值明显低于对照组(P<0.01),异丙酚组则明显高于对照组(P<0.01).结论从TNF-α/IL-10平衡的角度而言,氯胺酮、芬太尼和咪唑安定对于炎症反应初期细胞因子的平衡可能产生好的影响,而异丙酚则可能不利于细胞因子的平衡.  相似文献   

4.
目的研究氯胺酮、芬太尼、咪唑安定及异丙酚对TNF-α/IL-10平衡的影响。方法动物按配伍组设计分为5组,分别为生理盐水对照组、氯胺酮组、芬太尼组、咪唑安定组和异丙酚组,麻醉1h后注射LPS,分别在麻醉前(T0)、注射LPS前(T1)、注射LPS后1h(T2)、2h(T3)、4h(T4)抽取静脉血用ELISA法测血清中TNF-α开始和IL-10的水平计算TNF-α/IL-10比值。结果除了异丙酚组外,其他三组TNF-α/IL-10在时点T2都达到峰值并下降,在注射LPS后氯胺酮、芬太尼和咪唑安定TNF-α/IL-10的比值明显低于对照组(P<0·01),异丙酚组则明显高于对照组(P<0·01)。结论从TNF-α/IL-10平衡的角度而言,氯胺酮、芬太尼和咪唑安定对于炎症反应初期细胞因子的平衡可能产生好的影响,而异丙酚则可能不利于细胞因子的平衡。  相似文献   

5.
屈强  史忠 《重庆医学》2007,36(18):1801-1802,1808
目的 研究严重颅脑外伤患者早期外周血中白细胞介素1β(IL-1β)、肿瘤坏死因子α(TNF-α)、促肾上腺皮质激素(ACTH)、皮质醇水平的变化与血中淋巴细胞糖皮质激素受体(GR)变化的关系,以及氯胺酮和咪唑安定的影响.方法 选择严重颅脑外伤成年患者,随机分成致伤治疗组和致伤对照组,取正常人作为正常对照组.治疗组入院后给予氯胺酮加咪唑安定.检测各患者血液中ACTH、皮质醇、TNF-α、IL-1β含量,分离淋巴细胞检测GR蛋白水平的变化.结果 严重颅脑外伤患者早期IL-1β、TNF-α、ACTH、皮质醇较正常对照组均明显升高,致伤治疗组和致伤对照组间GLS评分3~5分的组间无差异,6~8分的组间有明显差异;血中淋巴细胞GR致伤后明显降低,GLS评分6~8分的治疗组GR降低明显好于致伤对照组.结论 严重颅脑外伤患者伤后存在糖皮质激素抵抗现象,与TNF-α、IL-1β两种炎性细胞因子关系密切;应用氯胺酮加咪唑安定后能明显改善GLS评分6~8分患者的GR降低.  相似文献   

6.
目的 探讨促炎性细胞因子(IL-6、IL-8、TNF-α)和抗炎性细胞因子(IL-10)在充血性心力衰竭(CHF)患者血清中的表达,以及贝拉普利对促炎性细胞因子和抗炎性细胞因子的调控作用.方法 96例CHF患者和50例健康查体者为研究对象,96例CHF患者随机分为CHF治疗组和CHF对照组.CHF患者均给予常规治疗,CHF治疗组存常规治疗基础上给予贝拉普利治疗,连续治疗6个月后评价临床疗效.采用流式细胞仪的液相蛋白定量技术测定受试对象血清中IL-6、IL-8、TNF-α和IL-10水平.结果 治疗前CHF组血清促炎性细胞因子(IL-6、IL-8、TNF-α)和抗炎性细胞因子(IL-10)水平显著高于正常对照组(P<0.05);治疗后CHF治疗组血清促炎性细胞因子(IL-6、IL-8、TNF-α)水平显著低于CHF对照组,血清抗炎性细胞因子(IL-10)水平显著高于CHF对照组,均有显著性差异(P<0.05).结论 贝托普利能调整CHF患者改善促炎性细胞和抗炎性细胞因子的失衡,即既能降低促炎性细胞因子浓度,又能增加抗炎性细胞因子浓度,从而延缓和抑制心肌重构.  相似文献   

7.
项尽一  夏建国  张昆  蒋筱杨  汪刚 《重庆医学》2016,(24):3330-3333
目的 探讨不同麻醉药物对兔严重烧伤早期炎性细胞因子变化的影响.方法 50只兔随机分为健康对照组(C组),烫伤对照组(SC组)、异丙酚组(P组)、氯胺酮组(K组)和异丙酚-氯胺酮组(PK组).除C组外制成30%Ⅲ°烧伤面积(TB-SA)烫伤模型,P组伤后持续泵注异丙酚20mg·kg-1 ·h-14h,K组氯胺酮20 mg·kg-1·h-14 h、PK组异丙酚10 mg·kg-1·h-1和氯胺酮10 mg·kg-1·h-14 h;而C组和SC组仅补液处理.分别于烫伤前、烫伤后1、6、12、24 h行血气分析并检测血清白细胞介素(IL)-1β、IL-6及肿瘤坏死因子-α(TNF-α)浓度.结果 SC组和药物干预组伤后二氧化碳分压(PaCO2)比烫伤前和C组明显降低(P<0.01),氧分压(PaO2)、乳酸(Lac)升高,而Lac水平高于烫伤前和C组(P<0.01),且在其后逐渐升高,但均在正常水平,pH值、PaO2和血氧饱和度(SO2)在各时间点与烫伤前比较差异无统计学意义(P>0.05).烫伤后SC、药物干预组IL-1β、IL-6及TNF-α升高(P<0.05),麻醉药物干预后Ib1β、IL-6及TNF-α各时间点均比SC组降低(P<0.05).PK组与P组及K组相比IL-1β、IL-6及TNF-α升高较少,组间差异有统计学意义(P<0.05).结论 异丙酚复合氯胺酮麻醉能更有效地抑制兔严重烧伤早期全身性炎症反应.  相似文献   

8.
目的 研究不同剂量氯氮平对雄性C57BL/6小鼠血清及其胰腺组织中淀粉酶(amylase)和促炎性细胞因子[白细胞介素(IL)-1β、IL-6和肿瘤坏死因子(TNF)-α]表达的影响.方法 将雄性C57BL/6小鼠随机分成对照组、氯氮平(5、10、20 mg/kg)组,分别给予0.9%氯化钠溶液、氯氮平(5、10、20 mg/kg)灌胃,连续灌胃14 d后采血测定各组小鼠amylase和促炎性细胞因子(IL-1β、IL-6和TNF-α)的水平;随后取小鼠胰腺组织,用Western blot方法检测胰腺组织amylase和促炎性细胞因子(IL-1β、IL-6和TNF-α)蛋白的表达,用荧光定量PCR方法检测胰腺组织amylase和促炎性细胞因子(IL-1β、IL-6和TNF-α)mRNA的表达.结果 与对照组相比,氯氮平10、20 mg/kg组血清amylase水平明显升高(P<0.01,P<0.001);与对照组相比,氯氮平三组的血清IL-1β水平剂量依赖性地升高(P <0.01,P<0.001);与对照组相比,血清IL-6水平在氯氮平5 mg/kg组有所下降(P<0.05).氯氮平剂量依赖性地升高小鼠胰腺组织amylase和促炎性细胞因子(IL-1β、IL-6和TNF-α)蛋白以及mRNA的表达水平,与对照组相比,差异均有统计学意义(P<0.01).结论 氯氮平可以升高血清amylase和促炎性细胞因子IL-1β的水平,并增加胰腺组织中amylase和促炎性细胞因子IL-1β、IL-6和TNF-α的表达,可能是氯氮平使用后易出现高淀粉酶血症乃至胰腺炎的发生机制之一.  相似文献   

9.
目的 研究类固醇受体辅活化子-1(SRC-1)基因敲除小鼠严重烧伤早期肝脏核因子-κB(NF-κB)表达及核转位的变化.方法 以SRC-1基因敲除小鼠为实验组,以野生型小鼠为对照组,以小鼠15%~20%TBSAⅢ度烧伤为实验模型,观察两组在严重烧伤前及烧伤后1、6、12h肝脏总蛋白NF-κB表达及伤后核转位的变化,同时提取致伤前、致伤后1、6h血清标本,观察炎性细胞因子TNF-α、IL-1β、IL-6的变化.结果 与野生型小鼠相比,SRC-1基因敲除小鼠严重烧伤后肝脏总蛋白NF-κB出水平有所增加,而野生型小鼠有所下降.从核转位的情况来看,SRC-1基因敲除小鼠致伤后NF-κB的入核能力明显强于野生型小鼠,6h差别最大.两组致伤后炎性细胞因子TNF-α、IL-1βIL-6均升高,但SRC-1基因敲除小鼠升高更为显著.结论 SRC-1蛋白对严重烧伤具应激性保护作用,缺失SRC-1蛋白使NF-κB功能增强更显著,致炎性细胞因子TNF-α、IL-1β、IL-6更大量产生,使整体伤情征象更重. -1β、IL-6的变化.结果 与野生型小鼠相比,SRC-1基因敲除小鼠严重烧伤后肝脏总蛋白NF-κB出水平有所增加,而野生型 鼠有所下降.从核转位的情况来看,SRC-1基因敲除小鼠致伤后NF-κB的入核能力明显强于野生型小鼠,6h差别最大.两组致伤后炎性细胞因子TNF-α、IL-1βIL-6均升高,但SRC-1基因敲除小鼠升高更为显著.结论 SRC-1蛋白对严重烧伤具应激性保护作用,缺失SRC-1蛋白使NF-κB功能增强更显著,致炎性细胞因子TNF-α、IL-1β、IL-6更大量产生,使整体伤情征象更重. -1β、IL-6的变化.结果 与野生型小鼠相比,SRC-1基因敲除小鼠严重烧伤后肝脏总蛋白NF-κB  相似文献   

10.
亚麻醉剂量氯胺酮对肝移植围术期细胞因子的影响   总被引:4,自引:0,他引:4  
目的探讨原位肝移植围术期亚麻醉剂量氯胺酮对血清细胞因子水平的影响。方法将行经典式原位肝移植手术病人20例随机均分为氯胺酮组(于麻醉后手术前静脉注射氯胺酮0.25mg/kg·b.w.,继以每小时0.5mg/kg·b.w.持续静脉滴注,无肝期暂停,开放前10min重启至手术结束);对照组(给予同等容量生理盐水),并于麻醉后手术前、阻断前5min、开放前5min、开放后15min、开放后60min、术毕即刻、术后4h、术后24h采集动脉血,酶联法检测血清中TNF-α、IL-6、IL-10水平。结果无肝期两组病人血中3种细胞因子水平较术前均显著增加(P<0.05),以IL-6和IL-10更为明显,开放后进一步上升,并于开放后60min达高峰,术后24h降至较术前略高水平。氯胺酮组TNF-α水平从阻断前5min至术毕4h均显著低于对照组(P<0.05),IL-6水平从阻断前5min至开放后60min明显低于对照组(P<0.05),IL-10水平在各个时间点两组间均无影响(P>0.05)。结论肝移植术中由于缺血再灌注及手术应激,机体产生明显的炎症及抗炎反应,以IL6及IL-10更为灵敏。氯胺酮能够抑制TNF-α、IL-6的上升,对IL-10的作用不明确。  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.
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   

13.
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   

14.
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   

15.
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   

16.
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   

17.
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   

18.
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   

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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