氧化苦参碱对小鼠淋巴结T细胞增殖的双向作用

目的检测氧化苦参碱(Oxymatrine,OMT)对刀豆蛋白A(Con A)刺激的小鼠淋巴结T细胞增殖的影响,探讨OMT对免疫系统的作用机制,为临床用OMT治疗免疫相关性疾病提供理论和实验依据.方法利用CFDA-SE染色,流式细胞术检测淋巴细胞在多克隆刺激剂Con A和OMT的共同作同下荧光强度的变化,并应用CELLQuest软件分析OMT对小鼠淋巴结T细胞增殖的影响程度.结果 500、125和31μg/mLOMT对小鼠淋巴结T细胞增殖呈剂量依赖性抑制,而16、8、4、2μg/mL OMT对小鼠淋巴结T细胞增殖起促进作用,但其剂量依赖关系不明显.结论 CFDA-SE染色和流式细胞术是分析淋巴细胞增殖的有力工具:OMT对小鼠淋巴结T细胞的增殖呈双向作用.     

牛大力多糖对小鼠T淋巴细胞增殖的双向调节作用

目的从牛大力(Millettia Speciosa Champ.)提取纯化多糖,流式细胞术检测多糖对刀豆蛋白A(Con A)刺激引起的小鼠T淋巴细胞增殖的影响,探讨牛大力多糖对免疫系统的调节作用机制,为临床用牛大力治疗多种慢性疾病提供理论和实验依据。方法提取、纯化牛大力多糖,利用CFDA-SE染色,流式细胞术检测多糖对Con A刺激引起的小鼠T淋巴细胞增殖的影响。结果终浓度为160μg/mL、800μg/mL、4 mg/mL、20 mg/mL的多糖对小鼠T淋巴细胞增殖呈剂量依赖性抑制,而终浓度为5、25、50、125μg/mL的多糖对小鼠T淋巴细胞增殖起促进作用,剂量依赖关系不明显。结论牛大力多糖对小鼠T淋巴细胞的增殖呈双向调节作用。     

氧化苦参碱抑制二硝基氟苯所致小鼠接触性皮炎及淋巴细胞增殖

目的 探讨氧化苦参碱(OMT)对二硝基氟苯(DNFB)所致小鼠变应性接触性皮炎(ACD)的抑制作用及小鼠淋巴细胞增殖的影响.方法 建立DNFB所致小鼠ACD模型,以不同剂量的OMT、PBS、氢化可的松(HCT)进行腹腔注射,检测小鼠耳廓肿胀度变化;利用羧基荧光素乙酰乙酸(CFDA-SE)染色,流式细胞术检测OMT对小鼠淋巴细胞增殖的影响.结果 OMT对DNFB所致小鼠ACD呈剂量依赖性抑制作用,且与同等剂量HCT作用效果相似,但副作用明显减小;体外实验证明,在500、125和31 μg/mL组OMT对小鼠淋巴细胞增殖呈剂量依赖性抑制.结论 OMT对DNFB所致小鼠ACD有显著的抑制作用,而且抑制小鼠淋巴细胞增殖;OMT是一种免疫抑制剂.     

氧化苦参碱对 CD_4~+CD_(25)~+调节性T细胞(Tr)和淋巴细胞增殖的影响(英文)

目的通过分析氧化苦参碱（oxymatrine，OMT）各剂量组对小鼠外周血调节性T细胞（regulatory Tcells，Tr细胞）数量的影响，同时检测OMT对刀豆蛋白A（Con A）刺激的小鼠淋巴结T细胞增殖的影响，探讨OMT治疗ACD的免疫学作用机制，以期为临床用OMT治疗变态反应性疾病提供更深入的理论和实验依据。方法建立DNFB诱发的小鼠ACD模型，以不同剂量的OMT、PBS、氢化可的松（HCT）进行腹腔注射（ip），在实验进程的第1、7、14、21和28天小鼠尾静脉采血，抗-CD3、抗-CD4、抗-CD25单抗进行三色免疫荧光标记，流式细胞术检测各组CD4^＋CD25^＋T细胞数量。利用羧基荧光素乙酰乙酸（CFDA-SE）染色，流式细胞术检测OMT对小鼠淋巴结T细胞增殖的影响。实验数据以SPSS 10．0以及CELL Quegt软件进行处理。结果体外实验证明，在500、125和31μg／mL组的OMT对小鼠淋巴结T细胞增殖呈剂量依赖性抑制，而在16、8、4和2μg／mL组的OMT对小鼠淋巴结T细胞增殖起促进作用，但其剂量依赖关系不明显。腹腔注射OMT能明显提高小鼠外周血中CD4^＋CD25^＋T细胞的数量，与HCT组比较（P〈O．01），与PBS组比较（P〈O．01）。结论OMT对小鼠淋巴结T细胞的增殖呈双向作用；腹腔注射OMT能明显提高小鼠外周血中CD4^＋CD^25^＋T细胞的数量；即OMT对免疫系统的影响呈双向作用，OMT是一种双向免疫调节剂。     

青蒿琥酯对小鼠脾淋巴细胞增殖的影响

目的探讨青蒿琥酯(Artesunate,Art)对小鼠脾淋巴细胞增殖的影响。方法采用四甲基偶氮唑蓝法分别检测Art对正常和刀豆蛋白A诱导的小鼠脾细胞增殖的影响。结果 Art对正常增殖的淋巴细胞活性无明显影响;剂量≥12.5μg/mL时,对刀豆蛋白A诱导的淋巴细胞增殖表现出较强的抑制活性(P<0.01),且抑制作用随药物浓度的增加而提高。结论 Art具有较强的抑制淋巴细胞增殖活性。     

黄芩甙对小鼠细胞免疫功能的影响

报告黄芩甙对细胞免疫功能的影响。结果表明．低剂量黄芩甙可明显促进Con A诱导的小鼠脾淋巴细胞增殖反应，高剂量则显著抑制。低剂量黄芩甙对LPS诱导淋巴细胞增殖反应有促进作用，但无统计学意义，高剂量可显著抑制淋巴细胞增殖。黄芩甙可明显提高小鼠脾脏单个核细胞中cAMP含量，对cGMP无影响。体内用药对巨噬细胞吞噬中性红的作用，低剂量显著升高，高剂量明显抑制。但体外用药均明显抑制巨噬细胞吞噬中性红的作用。     

迷迭香醇提取物对肺腺癌细胞增殖的影响及其机制

目的 研究迷迭香醇提取物 (RE) 对人肺腺癌细胞株 (AGZY) 增殖的影响及其机制.方法 采用改良MTT法、集落形成试验检测 RE 对 AGZY 生长增殖的影响;采用流式细胞术检测 RE 对 AGZY 细胞增殖周期的影响.结果 RE 为12.5、25、50 μg/mL和100μg/mL浓度作用5 d对AGZY的抑制率分别为47%、35%、86%和98%,半数抑制浓度IC50为17.8μg/mL;RE为25μg/mL作用AGZY 15 d,细胞集落形成明显减少,与溶媒对照比较差异有高度显著性;RE在50 μg/mL浓度作用细胞5 d,流式细胞仪检测到凋亡峰,100μg/mL有明显的凋亡峰出现.结论 RE体外明显抑制人肺腺癌细胞株(AGZY)的生长增殖,其财细胞增殖周期的阻滞可能是其抑制细胞增殖的机制之一.     

胡桃楸对电离辐射损伤小鼠免疫功能的影响

目的:探讨胡桃楸乙醇提取物（AEBJ）对电离辐射所致小鼠免疫功能损伤的影响。方法：60只小鼠随机分为假照射组、照射对照组、AEBJ低剂量（300 mg•kg^-1）照射给药组、AEBJ高剂量（600 mg•kg^-1）照射给药组、AEBJ低剂量单纯给药组和AEBJ高剂量单纯给药组6个实验组,检测小鼠外周血白细胞数、淋巴细胞百分数、淋巴细胞绝对值、脏器指数和Con A刺激小鼠脾淋巴细胞增殖能力。结果：照射对照组小鼠外周血白细胞数、淋巴细胞绝对值、淋巴细胞百分数、脏器指数和Con A诱导的脾淋巴细胞增殖反应能力均低于假照射组（P< 0.05）;AEBJ高、低剂量照射给药组小鼠外周血白细胞数、淋巴细胞绝对值、淋巴细胞百分数、脏器指数和Con A诱导的脾淋巴细胞增殖反应能力均高于照射对照组（P< 0.05）;AEBJ高、低剂量单纯给药组的淋巴细胞百分数和Con A诱导的脾淋巴细胞增殖反应能力均高于假照射组（P< 0.05）。结论：AEBJ对电离辐射所致的小鼠免疫功能损伤有保护和修复作用。     

重组hCTLA4Ig对小鼠脾淋巴细胞活化的抑制作用

目的 探讨基因重组hCTLA4Ig对小鼠脾淋巴细胞增殖反应的影响。方法 于不同时相点在Con A刺激的小鼠脾淋巴细胞及BALB/c与昆明种小鼠混合淋巴细胞培养中加入不同剂量hCTLA4Ig，应用^3H-TdR掺入法测定淋巴细胞增殖情况。结果 重组hCTLA4Ig能显著抑制ConA刺激的脾淋巴细胞及混合淋巴细胞反应中的细胞增殖。结论 重组hCTLA4Ig能抑制鼠淋巴细胞的活化。     

复方枸杞袋泡茶对电离辐射致小鼠免疫功能损伤的保护作用

目的观察复方枸杞袋泡茶对电离辐射所致小鼠免疫功能损伤的影响。方法将4只小鼠随机分为空白对照组、照射对照组、照射+复方枸杞袋泡茶高剂量组(2.4 g/kg),照射+复方枸杞袋泡茶低剂量组(0.6 g/kg),12只/组,连续灌胃14 d,2次/天,在给药第7天以20 Gy X射线进行次照射,继续给药至14 d后检测复方枸杞袋泡茶对小鼠外周血白细胞数、淋巴细胞百分数、淋巴细胞绝对值、脏器指数和Con A刺激小鼠脾淋巴细胞增殖能力的影响。结果与照射对照组比较,各剂量给药组对小鼠外周血白细胞数、淋巴细胞百分数、淋巴细胞绝对值、脏器指数和Con A刺激小鼠脾淋巴细胞增殖能力均高于照射对照组(P<0.05,P<0.01)。结论复方枸杞袋泡茶对电离辐射所致的小鼠免疫功能损伤有保护作用。     

Value of D-Dimers in patients with acute aortic dissection

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.     

Research of combined liver-kidney transplantation model in rats

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.     

BLOOD PRESSURE CHANGE WITH AGE IN SALT-SENSITIVE TEENAGERS

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.     

安心颗粒对急诊经皮冠状动脉介入术后生活质量影响的研究

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.     

APPLICATION OF LORNOXICAM TO PATIENT-CONTROLLED ANALGESIA IN PATIENTS UNDERGOING ABDOMINAL SURGERIES

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…     

The comparative studies of the influences of Urapidil and Nicardipine on sino-atrial node function, atrio-ventricular node function and hemodynamics

Objective:To investigate the influences of urapidil and nicardipine on rabbit sinus function,atrio-ventricular node function and hemodynamics.Methods:Thirty-two Angora's rabbits were selected and randomly divided into four groups.U1 group:urapidil 0.25 mg/kg;U2 group:urapidil 0.5 mg/kg;N1 group:nicardipine 10 μg/kg;N2 group:nicardipine 20 μg/kg.All these medicine were administrated within 30 seconds.Measurements were taken before and after the administration of urapidil or nicardipine for the following data:mean blood pressure(MAP),heart rate(HR),sino-atrial conduction time(SACT),maximal sinoatrial recovery time(SNRTmax)corrected sinus node recovery time(CSNRT),index of sinus node recovery time(SNRTI),Wenckebach A-V conduction frequency (WB),and P-R interval.Results:Significant MAP and HR changes were identified in all of the four groups before and after administration of both urapidil and nicardipine.No significant changes could be found in the rest of the parameters.Intergroup analysis showed that SACT and CSNRT of N1 and N2 groups were shorter than those of the U2 group(P＜0.01);the MAP decreased(P＜0.01)and the HR increased drastically(P＜0.01).Conclusions:Neither urapidil(0.25 mg/kg,0.5 mg/kg)nor nicardipine(10μg/kg,20μg/kg)has any significant influence on rabbit sinus function or rabbit atrio-ventricular node function.Nicardipine could be a better choice than urapidil for parafunctional sinus node patients.     

Expression of OPGmRNA and ODFmRNA in the patients of hip fracture due to osteoporosis

Objective：To investigate the gene expression of osteoprotegerin（OPG） and osteoclast differentiation factor（ODF） in the bone tissue of patients with hip fracture due to osteoporosis. Methods：OPGmRNA and ODFmRNA in the bone tissue in 50 cases of osteoporosis sufferers（over 50 years old） with hip fracture（Observer Group） and 30 cases of hip facture sufferers with no osteoporosis（Control group） were analyzed with the Semi-Quantitative RT-PCR method. Results：The mRNA expressed of ODF, OPG were both high in the patients with hip fracture. In the control group, the expression of OPG mRNA was observed, while the expression of ODF mRNA was very slight. Conclusion：Aged patients contained all signals including OPG, ODF that are essential for inducing osteoclastogenesis and promoting bone resorption.     

Dynamic Changes in Serum Estradiol and Progesterone levels in Patients of Premenstrual Syndrome with Adverse Flow of Liver-qi

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.     

Real-time Three-dimensional Echocardiography in Assessment of Left Ventricular and Right Ventricular Volumes

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.     

SCREENING FOR A 21-CHROMOSOME ABNORMALITY IN PREIMPLANTED EMBRYOS OF ELDERLY WOMEN

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.