首页 | 本学科首页   官方微博 | 高级检索  
相似文献
 共查询到20条相似文献,搜索用时 140 毫秒
1.
结论 硒酸精氨酸对小鼠酒精性肝损伤具有显著的保护作用,效果也优于二氧化硒.  相似文献   

2.
目的:观察鞣花酸对小鼠酒精性肝损伤的保护作用,并探讨其作用机制。方法: 50只昆明小鼠随机分为空白对照组,肝损伤模型组和低、中、高剂量鞣花酸组,每组10只。空白对照组和肝损伤模型组小鼠给予羧甲基纤维素钠溶剂灌胃,不同剂量鞣花酸组小鼠分别以160、320和480 mg·kg-1鞣花酸灌胃,连续15 d。末次灌胃后,空白对照组小鼠灌胃等量蒸馏水,其余组小鼠均灌胃50%乙醇12 mL·kg-1,禁食不禁水,16 h后各组小鼠眼球取血,处死,取小鼠肝脏组织和血清。计算各组小鼠肝脏系数;测定小鼠血清丙氨酸氨基转移酶(ALT)、天门冬氨酸氨基转移酶(AST)活性和甘油三酯(TG)水平;测定小鼠肝组织中超氧化物歧化酶(SOD)、谷胱甘肽(GSH)活性和丙二醛(MDA)水平。结果:与空白对照组比较,肝损伤模型组小鼠肝脏系数、血清ALT和AST活性及TG水平明显升高(P<0.05或P<0.01),肝组织中SOD和GSH活性及MDA水平明显降低(P<0.05或P<0.01);与肝损伤模型组比较,低、中和高剂量鞣花酸组小鼠肝脏系数、血清ALT和AST活性明显降低(P<0.05或P<0.01),肝组织中SOD活性明显升高(P<0.05或P<0.01),MDA水平明显降低(P<0.01);中和高剂量鞣花酸组小鼠肝组织GSH活性明显升高(P<0.01);高剂量鞣花酸组小鼠血清TG水平明显降低(P<0.05)。结论:鞣花酸对小鼠酒精性肝损伤具有保护作用,以480 mg·kg-1剂量时作用最为明显;鞣花酸可能通过抗氧化作用实现其对肝细胞损伤的保护作用。  相似文献   

3.
目的研究葛根复合胶囊对小鼠酒精性肝损伤的保护作用。方法采用灌胃50%酒精(12m L/kg)的方式建立小鼠急性酒精性肝损伤模型,研究不同剂量(100,300,500mg/kg)葛根复合胶囊(CCPL)对酒精性肝损伤小鼠活动状态,血清丙氨酸氨基转移酶(ALT)和天冬氨酸氨基转移酶(AST),肝脏氧化应激参数丙二醛(MDA)和谷胱甘肽过氧化物酶(GSH-Px),以及肝脏组织病理学的影响。结果中、高剂量CCPL可显著降低酒精性肝损伤小鼠血清中ALT和AST活性,并能显著升高肝脏中GSH-Px活性(P<0.05或P<0.01)。低、中、高剂量CCPL均可显著降低酒精性肝损伤小鼠肝脏中MDA含量(P<0.05或P<0.01),且具有量效关系,最大降幅为54.4%;其中高剂量组与阳性对照护肝片效果相当。此外,CCPL对酒精性肝损伤小鼠肝脏组织的病理学改变有较强拮抗效应。结论葛根复合胶囊对小鼠酒精性肝损伤具有较好的保护作用,能为以葛根为主要原料开发具有解酒护肝功效的膳食补充剂或药物奠定了基础。  相似文献   

4.
虾青素对小鼠急性乙醇肝损伤的保护作用   总被引:1,自引:1,他引:1  
目的:研究虾青素对乙醇所致小鼠急性化学性肝损伤的保护作用。方法:雄性小鼠60只,随机分为正常对照组、急性乙醇肝损伤模型组、联苯双酯阳性对照组(15 mg/kg)以及虾青素低、中、高剂量组(10,15,20 mg/kg)共6组。测定并比较各组小鼠肝脏系数,血清中丙氨酸氨基转移酶(ALT)、天门冬氨酸氨基转移酶(AST)、超氧化物歧化酶(SOD)和谷胱甘肽过氧化物酶(GSH-px)活性与丙二醛(MDA)含量;测定肝组织中SOD,GSH-px活性,MDA含量以及组织病理系数。结果:各剂量虾青素均能升高急性乙醇肝损伤小鼠血清与肝组织中SOD,GSH-px活性(P<0.01),降低血清ALT,AST活性(P<0.01),降低血清与肝组织MDA含量(P<0.01),并能不同程度地改善肝脏病理组织损伤。结论:虾青素对乙醇所致急性肝损伤具有预防性保护作用。  相似文献   

5.
目的研究水飞蓟素脂质体(L-SIL)对卡介苗(BCG) 脂多糖(LPS)引起的小鼠免疫性肝损伤的保护作用.方法昆明种小鼠80只随机分为空白组、模型组及L-SIL低、中、高剂量组和益肝灵(T-SIL)低、中、高剂量组共8组,测量并比较各组小鼠血清丙氨酸氨基转移酶(ALT)、天门冬氨酸氨基转移酶(AST)水平和肝组织匀浆中超氧化物歧化酶(SOD)、谷胱甘肽过氧化物酶(GSH-PX)水平以及丙二醛(MDA)、一氧化氮(NO)含量,观察肝脏、脾脏系数的变化,并观察各组小鼠肝组织病理学改变.结果与模型组相比,L-SIL各剂量组血清ALT、AST水平明显降低(P<0.05~0.01),肝组织匀浆GSH-PX、SOD水平明显升高(P<0.05~0.01),MDA和NO含量明显降低(P<0.01),肝脏、脾脏系数明显降低(P<0.05~0.01).L-SIL对ALT、AST、GSH-PX水平和NO含量的作用强于同剂量T-SIL组(P<0.05~0.01).组织学观察L-SIL低、中剂量组的肝损伤明显轻于模型组和相应剂量T-SIL组.结论L-SIL对小鼠BCG LPS引起的免疫性肝损伤有明显的保护作用,且其保护作用明显优于T-SIL.  相似文献   

6.
目的::观察刺五加注射液对小鼠酒精性肝损伤的保护作用。方法:昆明种雄性小鼠60只(18~22 g),随机分为正常组、模型组、硫普罗宁阳性药对照组和刺五加高、中、低剂量组(200 mg/kg、100 mg/kg、50 mg/kg ),每组各10只。采用50%乙醇12 ml·kg-1·d-1连续灌胃10 d,制备小鼠酒精性肝损伤模型。测定血清中天门冬氨酸氨基转移酶、丙氨酸氨基转移酶及三酰甘油( TG)水平;肝组织丙二醛、还原型谷胱甘肽含量,计算肝脏指数,并观察肝脏病理变化。结果:小鼠酒精性肝损伤模型构建成功。除刺五加低剂量组TG水平与模型组差异无统计学意义(P>0.05)外,与模型组比较,刺五加注射液均能够降低血清中天门冬氨酸氨基转移酶、丙氨酸氨基转移酶和TG水平(P<0.05~P<0.01);抑制小鼠肝脏组织丙二醛含量的升高,提高肝脏中还原型谷胱甘肽含量(P<0.05~P<0.01);减轻肝脏病理组织损伤;刺五加高、中剂量组均能降低小鼠肝脏指数(P<0.05和P<0.01)。结论:刺五加注射液对小鼠酒精性肝损伤具有保护作用,其作用机制可能与抑制氧化应激有关。  相似文献   

7.
赵斐  竹剑平 《中外医疗》2008,27(25):30-30
目的 观察珍珠粉对小鼠酒精肝的保护作用.方法 采用食用酒精诱导小鼠肝损伤,比色法测定血清中丙氨酸氨基转移酶(ALT).天门冬氨酸氨基转移酶(AST)的含量;肝脏中超氧化物歧化酶(SOD)活力和丙二醛(MDA)浓度,计算肝脏指数.结果 珍珠扮高剂量可使小鼠酒精肝损伤血清ALT、AST升高的水平降低,降低小鼠肝损伤的肝脏MDA的水平,提高SOD的活性,降低升高的肝脏指数,与模型组比较均有王著差异(P<0.01).结论 珍球粉对小鼠酒精肝有明显的保肝作用.  相似文献   

8.
目的:研究玉米黄质对四氯化碳(CCl4)所致小鼠急性化学性肝损伤的保护作用。方法:雄性昆明种小鼠60只,随机分为正常对照组、急性化学性肝损伤模型组、联苯双酯阳性对照组以及玉米黄质低、中、高剂量组,测定并比较各组小鼠肝脏系数,血清中丙氨酸氨基转移酶(ALT)、天门冬氨酸氨基转移酶(AST)、超氧化物歧化酶(SOD)和谷胱甘肽过氧化物酶(GSH-Px)活性与丙二醛(MDA)含量;测定肝组织中SOD、GSH-Px活性、MDA含量以及组织病理系数。结果:玉米黄质各剂量组均能升高急性化学性肝损伤小鼠血清与肝组织SOD、GSH-Px活性(P<0.01),降低血清ALT、AST活性(P<0.01)和降低血清与肝组织MDA含量(P<0.01),并能不同程度地改善肝脏病理损伤。结论:玉米黄质对CCl4所致急性化学性肝损伤具有预防性保护作用。  相似文献   

9.
目的研究鸡血藤总黄酮对四氯化碳诱导小鼠肝损伤的保护作用。方法 60只雄性小鼠随机分为6组,每组10只。除正常组外,其余各组均腹腔注射0.2%的CCl4橄榄油溶液诱导小鼠急性肝损伤,测定血清丙氨酸氨基转移酶(ALT)和天冬氨酸氨基转移酶(AST)、肝组织超氧化物歧化酶(SOD)和谷胱甘肽过氧化物酶(GSH-Px)的活性及丙二醛(MDA)的含量,HE染色观察肝组织病理学变化。结果鸡血藤总黄酮明显抑制CCl4致血清ALT、AST活性的升高和肝组织SOD、GSH-Px活性的降低及MDA水平的升高。肝组织形态学观察显示鸡血藤总黄酮能显著改善肝组织的病理变化。结论鸡血藤总黄酮对CCl4诱导小鼠急性肝损伤具有一定的保护作用。  相似文献   

10.
目的 研究鸡血藤总黄酮对四氯化碳诱导小鼠肝损伤的保护作用.方法 60只雄性小鼠随机分为6组,每组10只.除正常组外,其余各组均腹腔注射0.2%的CCl4橄榄油溶液诱导小鼠急性肝损伤,测定血清丙氨酸氨基转移酶(ALT)和天冬氨酸氨基转移酶(AST)、肝组织超氧化物歧化酶(SOD)和谷胱甘肽过氧化物酶(GSH-Px)的活性及丙二醛(MDA)的含量,HE染色观察肝组织病理学变化.结果 鸡血藤总黄酮明显抑制CCl4 致血清ALT、AST活性的升高和肝组织SOD、GSH-Px 活性的降低及MDA水平的升高.肝组织形态学观察显示鸡血藤总黄酮能显著改善肝组织的病理变化.结论 鸡血藤总黄酮对CCl4诱导小鼠急性肝损伤具有一定的保护作用.  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.
目的:评价使用安心颗粒对急诊经皮冠状动脉介入术(PPCI)术后生活质量的影响.方法:将160例接受PPCI的急性ST段抬高型心肌梗死患者随机分为安心颗粒组(术前顿服安心颗粒8.8g,术后安心颗粒4.4 g/次,每日2次)和对照组(仅接受基础药物治疗).所有患者均服用阿司匹林、氯吡格雷和阿托伐他汀.分别在入院时、出院前1d、出院后180 d时,应用心肌梗死多维度量表(MIDAS)、中文版SF-36评价量表对患者生活质量评分.并观察术后30 d以内的出血并发症、血小板减少症发生情况.结果:入院时和出院前1d,两组患者的心肌梗死MIDAS、SF-36量表评分比较无差异(P>0.05);出院后180 d时,与对照组比较,安心颗粒组MIDAS、SF-36评分明显减低(P<0.05);组内与入院时比较,两组出院前1d、出院后180 d时,MIDAS、SF-36评分均降低(P<0.05).两组患者在随访期间均无大量出血、少量出血、重度和极重度血小板减少症发生,安心颗粒组有4例、对照组有7例发生不明显出血(P>0.05).两组发生轻度血小板减少症的患者数比较无差异(P>0.05).结论:PPCI使用安心颗粒,能改善急性ST段抬高型心肌梗死患者的生活质量,且不增加出血风险.  相似文献   

20.
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   

设为首页 | 免责声明 | 关于勤云 | 加入收藏

Copyright©北京勤云科技发展有限公司  京ICP备09084417号