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1.
目的:对室内选育的淡色库蚊抗溴氰菊酯品系(抗性系数518)进行遗传分析。方法:采用LC-P值分析法研究淡色库蚊溴氰菊酯抗性的形式遗传。采用抑制剂增效试验探讨抗性机制。结果:正交和反交F1代的抗性系数分别为154.8和159.2。F1代的LC-P线靠近抗性亲本一方,D=0.625;BC代在死亡率50%处、F2代在死亡率25%和75%处未出现明显平坡,BC和F2的实测曲线和理论曲线均存在较大差异,P均<0.01;PB、DEF和TPP对抗性品系的增效比分别为27.13、1.22和1.05。结论:淡色库蚊对溴氰菊酯的抗性为多基因遗传,其主要基因为不完全显性,多功能氧化酶是抗性的主要因子  相似文献   

2.
创伤多器官功能不全综合征与HLA—DRB1相关性研究   总被引:1,自引:0,他引:1  
目的 研究创伤后MODS与HLA-DRB1相关性。方法 对PCR对37例创伤对37例创作后MODS患者18例对HLA-DRB1基因引物进行扩增,用ELISA进行IL-10测定。结果 创作后MODS患者DR2(DRB1*1501-DRB1~1502)基因频率显著升高。DR2^+较DR2^-的MODS患者血浆IL-10水平和病死率显著升高(P〈0.01)。结论 创伤后MDDS与HLA-DR2(DRB1  相似文献   

3.
对60例急性期脑梗塞病人血浆血栓素B2(TXB2)、6-酮-前列腺素F1α(6-Keto-pgf1α)和血清脂质过氧化物(LPO)水平变化以及阿魏酸内(SF)对其影响研究。结果发现,急性期脑梗塞病人LPO水平显著升高并持续2周以上,6-Keto-PGF1α无明显影响。SF对LPO的抑制作用明显优于维生素E(P<0.01),其机理可能与SF对自氧化和酶促过氧化均产生抑制作用有关。  相似文献   

4.
以HLA-DRB基因类扩增为参照,通过HLA-DR2组特异性扩增确定HLADR2携带者,PCR/SSP作亚型分型,并用银染PCR/SSCP分析HLA-DR2等位基因第二外显子单链构象,调查湖南地区汉族群体SLE(系统性红斑狼疮)患者58例和健康对照59例HLA-DR2等位基因分布。结果示,HLA-DR2与SLE相关,HLD-DRB1*1501为疾病相关等位基因,该群体中检出的另外两种亚型DRB1*  相似文献   

5.
BMP-2和TGFβ1对培养兔关节软骨细胞代谢的影响   总被引:3,自引:0,他引:3  
目的 探讨骨形态发生蛋白-2(BMP-2)和转化生长因子β1(TGFβ1)对体个培养兔关节软骨细胞代谢的影响,从而了解其在关节软骨损伤修复中的作用。方法 利用荧光光度计,721-型分光光度计,^35S-Na2SO4同位素掺入法等测定兔原代及反分化关节软骨细胞羟脯氨酸和蛋白多糖(PG)的变化。结果 BMP-2既能促进反分化关节软骨细胞DNA合成又能增加原代、反分化关节软骨细胞羟脯氨酸的含量和^35S-Na2SO4掺入,而TGFβ1显著增加原代软骨细胞羟脯氨酸的合成和^35S-Na2SO4掺入。结论 TGFβ1不能阻止关节软骨细胞反分化,而BMP-2能促进软骨细胞的增殖和维持其表型,还可使已丢失软骨表型的反分化软骨细胞有向恢复软骨表型方向分化的可能。  相似文献   

6.
淡色库蚊溴氰菊酯抗性的生理生化机理   总被引:4,自引:0,他引:4  
为探讨淡色库蚊溴氰菊酯抗性的生理生化机理,对抗生和敏感品系进行了离体解毒酶测定、活体抑制试验和抗击倒频率测定。结果:抗性品系的多功能氧化酶和羧到酯酶活力分别为敏感品系的1.64倍和1.58倍;增效醚(PB)、磷酸三苯酯TPP)和杀虫脒的增效比分别为152.5、1.1和4.7倍;抗性品系的抗击倒频率高于敏感品系,表明:抗性的主要机理为多功能氧化酶活力增强,其次为靶标下敏感以及羧酸酯酶活力增强。  相似文献   

7.
目的:观察血栓素(TX)A2合成酶抑制剂OKY-046对嗜酸性粒细胞(EOS)浸润气道的影响,探讨TXA2在过敏性气道炎症过程中的作用。方法:应用鸡卵白蛋白(OVA)致敏和反复雾化吸入刺激小鼠以复制过敏性气道炎症模型。除对照组外,各实验组小鼠于每天OVA刺激前分别给予不同剂量OKY-046腹腔注射,计数支气管肺泡灌洗液(BALF)中EOS数量,并测定支气管肺泡灌洗液(BALF)中TXB2和6-酮-前列腺素F1α(6-Keto-PGF1α)水平。结果:致敏小鼠给予OVA刺激后BALF中EOS数、TXB2和6-Keto-PGF1α水平均显著升高,当以OKY-046处理后,BALF中的EOS明显减小,并呈剂量相关性,而且OKY-046尚能引起TXB2水平呈剂量相关性降低。结论:TXA2对于EOS浸润到呼吸道具有明显的趋化作用,其合成酶抑制剂对于临床治疗哮喘患者可能会有重要的价值  相似文献   

8.
采用XRD,IR,Mobauer ESR,XPS,SEM和孔结构分析等分析测试手段,对比研究了新鲜,失活和再生三种丙烯氨氧化催化剂的体相结构和表面性质。结果表明,新鲜催化剂中各元素以Fe2(MoO4),α-CoMoO4,NiMoO4,γ-Bi2O3.MoO3,α-Bi2O3.3MoO3,η-MoO3,α-Bi2O3和β-Bi2O3形式存在2;失活催化剂中,部分Fe2(MoO4)3转变为α-Fe-M  相似文献   

9.
目的分离抗人卵巢癌单克隆抗体COC183-B2轻链可变区(VL)基因并测定其核苷酸序列。方法用PCR方法体外扩增单抗COC183-B2VL基因,将其克隆入PUC19载体,重组子用Sanger’s双脱氧链终止法测定其核苷酸序列,将其序列通过Internet与GeneBank、EMBL、DDBJ和PDB已发表的抗体序列进行比较分析。结果VL基因全长336bp,属小鼠免疫球蛋白轻链第Ⅱ亚类(SubgroupⅡ),由种系基因的VK及J基因的MUSJK2重排而成。该VL基因序列已被GeneBank收录(acesionNo.gbAF044077)。结论该VL基因为抗人卵巢癌单抗COC183-B2功能性轻链可变区基因。  相似文献   

10.
EXPRESSIONOFTGF-β1,PDGFANDIGF-1mRNAINLUNGOFBLEOMYCIN-A5-INDUCEDPULMONARYFIBROSISINRATSLiHaichao李海潮,HeBing何冰,QueChengli阙呈立andW...  相似文献   

11.
FOR anesthesiologis s ,treatingpostoperativepainhas alwaysbeen a problem.Althoughopioidshave been provedtobe effective,theirsideeffectscouldnotbeignored.With thedevelopmentofscienceand pharmacology,many drugs with aspectsof satisfactoryanalgesicefficacyand couldbe welltoleratedby patientshave been developed.And lornoxicamisone of them, which isa non-steroidalanti-inflammatorydrug (NSAID ), with analgesic, anti-infl-ammatory,andantipyreticproperties.Itseliminationhalf-time(3 to 5 hours) isle…  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.
Shock wave lithotripsy (SWL) is a treatment of choice for upper urinary stones. However, this procedure is inappropriate for obese patients because the focus is often unable to reach the target owing to the limited focal distance in shock wave source. Although treating such patients in a blast path may increase the application length of shock wave source, it's difficult to find this path on the lithotripter monitor. For this reason, we invented an adjustable calibration marker in order to set an effective focus in the shock wave hath.  相似文献   

15.
Excess production of reactive oxygen species(ROS)of mitochondrion mediated by hyperglycemia is the common pathogenesis of angiopathic complications of diabetes.TCM holds that the damp from the dysfunction of spleen.kidney and liver is the causative factor of complications of diabetes.This is similar to the mechanism of Ros resulting in angiopathic complications of diabetes.When the angiopathic complications of type II diabetes mellitus(T2DM)are difierentiated as caused by turbid damp in TCM can be explained as ROS.Since the obstruction of pathogenic damp in channels and collaterals is said to be the main pathogenesis,the treating principle should be dissolving the damp to remove the obstruction.  相似文献   

16.
INTRODUCTION Obesity is a complex emergent problem, which can be possibly solved not only by the diet but also by the life style and promotion of a constant physical exercise. 1, 2 No doubt careful attentions must be given to the nutritional condition of obese people, the dietary habits, the somatic build (i.e. distribution of fat mass) and the organic functions linked to formation of the fat mass. All the parameters should be constantly monitored before, during and after a diet treatment. 3, 4, 5  相似文献   

17.
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   

18.
People with dysglycemia are at high risk for atherosclerotic diseases. This study aims at investigating the atherosclerotic vascular damage in dysglycemia and its metabolic origin in Tibetan population.  相似文献   

19.
Objective: To observe the therapeutic effects in acupunture treatment of primary dysmenorrhea combined with spinal Tui Na, and study its mechanism. Methods: Thirty cases of the treatment group were treated by acupuncture combined with spinal Tui Na, and thirty cases in the control group were treated by routine acupuncture. Results: The total effective rate was 93.3% in the treatment group, and 73.3% in the control group, with a significant difference between the two groups (P<0.05). Conclusions: Acupuncture combined with spinal Tui Na has good prospects for treatment of primary dysmenorrhea.  相似文献   

20.
In treating chronic nephropathy,Luo Lingjie,a chief physician,pays attention to regulating the balance between yin and yang,treating infection if present,and removing pathogenic factors.He prescribes gentle drugs and uses carefully strongly warming-tonifying ones,emphasizes the importance of persuading the patient to persist in treatment with medication and nurse one's health for recuperation,and is good at combined use of TCM and western medicine therapy and brings the merits of various therapies into full play,with obvious theraoeutic effects.  相似文献   

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