脓毒症小鼠肠道上皮细胞凋亡与白细胞介素1β转换酶基因表达的关系

目的研究脓毒症后小鼠肠道上皮细胞凋亡与ＩＬ－１β转换酶（ＩＣＥ）及细胞因子ＩＬ－１β基因表达的关系。方法盲肠结扎穿孔（ＣＬＰ）造成小鼠脓毒症，假手术组接受同样的手术操作但不行ＣＬＰ。致伤后１、３及６小时分离肠上皮细胞，采用ＲＴ－ＰＣＲ定量检测ＩＣＥ基因的表达，琼脂糖凝胶电泳和流式细胞仪定量检测肠上皮细胞凋亡。结果ＣＬＰ组小鼠肠上皮细胞内ＩＣＥ和ＩＬ－１β的表达明显高于假手术组（Ｐ＜０．０１），肠上皮细胞内ＩＬ－１β基因表达与ＩＣＥ基因表达存在明确的依赖性且明显高于假手术组（Ｐ＜０．０１），以致伤后６小时表达量最高。肠上皮细胞凋亡在ＣＬＰ后１小时开始出现并在６小时最明显，细胞凋亡与ＩＣＥ和ＩＬ－１β基因表达成正比。假手术组未检测到肠上皮细胞凋亡。结论脓毒症时ＩＣＥ基因参与了肠上皮细胞的凋亡机制     

细胞因子对内毒素刺激的原代培养大鼠肝细胞一氧化氮生成的 …

目的：观察细胞因子（ＩＬ－１β，ＩＦＮ－γ，ＴＮＦ－α）及细菌内毒素（ＬＰＳ）对原代培养大鼠肝细胞一氧化氮（ＮＯ）生成的影响。方法：用Ｇｒｉｅｓｓ反应法检测细胞培养上清ＮＯ含量，放射免疫分析法检测细胞内环磷酸鸟苷（ｃＧＭＰ）水平。结果：３种细胞因子与ＬＰＳ单独或任意两种并不刺激肝细胞ＮＯ生成，但在上述３种细胞因子共同存在下，ＬＰＳ剂量依赖性（１～１００ｍｇ／Ｌ）及时间依赖性地（１２－４８ｈ）增加细     

脓毒症小鼠肠道上皮细胞凋亡与白细胞介素1β转换酶基因表达？…

目的 研究脓毒症后小鼠肠道上皮细胞凋亡与ＩＬ－１β转换酶（ＩＣＥ）及细胞因子ＩＬ－１β基因表达的关系。方法 盲肠结扎穿孔（ＣＬＰ）造成小鼠脓毒症,假手术组接受同样的手术操作但不行ＣＬＰ。致伤后１,３及６小时分离肠上皮细胞,采用ＲＴ－ＰＣＲ定量检测ＩＣＥ基因的表达,琼脂糖凝胶电泳和流式细胞仪定量检测肠上皮细胞凋亡。结果 ＣＬＰ组小鼠肠上皮细胞内ＩＣＥ和ＩＬ－１β的表达明显高于假手术组（Ｐ〈０．０１）     

银耳多糖对小鼠IL－2、IL－6、TNF－α活性及其mRNA表达的影响

目的：观察银耳多糖（ＴＰ）对小鼠脾细胞ＩＬ－２、ＩＬ－６和ＴＮＦ活性及其ｍＲＮＡ表达的影响。方法：分别用ＣＴＬＬ、７ＴＤ１和ＷＥＨＩ－１６４细胞株测小鼠脾细胞ＩＬ－２、ＩＬ－６和ＴＮＦ-α活性，用Ｎｏｒｔｈｅｒｒｎｂｌｏｔ印迹杂交法测上述细胞因子的ｍＲＮＡ表达。结果：银耳多糖（ＴＰ）１００ｍｓ／Ｌ可促进ＣｏｎＡ诱导的脾细胞培养上清１Ｌ－２的活性，该作用１２ｈ即可出现，２４ｈ达到高峰。单用仅呈现类似但较弱的作用。ＴＰ１００ｍｇ／Ｌ从１２ｈ起明显增强ＬＰＳ活化的小鼠腹腔巨噬细胞产生ＩＬ－６的能力。ＴＰ２５、１００ｍｇ／Ｌ可明显增强小鼠腹腔巨噬细胞ＴＮＦ－α的活性。ＴＰ可促进小鼠脾细胞中细胞因子ＩＬ－２、ＩＬ－６ＴＮＦ－ａｍＲＮＡ的表达量，并且具有一定的剂量反应关系和时效关系，最适剂量为２００ｍｇ／ｋｇ，给药９ｄ，表达量最高。结论：ＴＰ通过促进ＩＬ－２、ＩＬ－６和ＴＮＦ－ａｍＲＮＡ表达，而促进上述细胞因子的生成。     

hIL—10基因转导抑制大鼠心肌细胞诱生炎症细胞因子

目的：观察人白细胞介素１０基因转导对脂多糖（ＬＰＳ）诱导大鼠心肌细胞（ＣＭＣ）的炎症细胞因子的产生及其基因表达的影响。方法：通过重组逆转录病毒载体ｐＬＸ（ＩＬ－１０）ＳＮ将人ＩＬ－１０基因导入大鼠ＣＭＣ,应用ＰＣＲ,ＲＴ－ＰＣＲ和ＥＬＩＳＡ;（１）检测ＩＬ－１０基因的整合和表达;（２）观察ＩＬ－１０基因转导对ＬＰＳ诱导的ＣＭＣ肿瘤坏死因子－α的ｍＲＮＡ表达及白细胞介素－１β（ＩＬ－１β）和ＴＮＦ－     

血液透析患者脂多糖抗体的变化及其与肿瘤坏死因子和白介素1的关系

该文观察了维持性血液透析患者血浆抗脂多糖抗体（Ａｎｔｉ－ＬＰＳ）、肿瘤坏死因子α（ＴＮＦ２）和白介素１（ＩＬ－１）、变化规律及其与致热原反应的关系。结果发现，透析３～１２月的Ａｎｔｉ－ＬＰＳ水平逐渐升高，并维持在较高水平；透析后１ｈ患者ＴＮＦ２和ＩＬ－１水平明显升高；内毒素，ＴＮＦ２和ＩＬ－１是致热原反应的重要炎症介质。     

细胞因子对IL－2产生和IL－2受体表达的影响

本研究实验结果表明：ＩＬ－１、６、８、ＧＭ－ＣＳＦ对ＩＬ－２产生有显著的促进作用，同时对ＩＬ－２Ｒα和ＩＬ－２Ｒβ表达有明显促进作用；而ＩＬ－３在本实验浓度下对ＩＬ－２及ＩＬ－２Ｒ表达均无明显影响；ＩＬ－２对ＩＬ－２Ｒα表达有明显促进作用，对ＩＬ－２Ｒβ则无明显作用。利用ＹＴ细胞株进行的实验表明：ＩＬ－１、６、８和ＧＭ～ＣＳＦ能促进ＹＴ细胞的ＩＬ－２Ｒα和ＩＬ－２Ｒβ表达，ＩＬ－３则无明显作用，ＩＬ－２对ＹＴ细胞的ＩＬ－２Ｒβ表达有促进作用，对ＩＬ－－２Ｒα无明显影响。实验中发现，ＩＬ－１对ＩＬ－２Ｒα表达的作用和ＩＬ－１Ｒ有密切的关系。     

烧伤患者血清IL-6、IL-8、TNF-α测定及其临床意义

探讨细胞因子白介素－６（ＩＬ－６）、白介素－８（ＩＬ－８）、肿瘤坏死因子－α（ＴＮＦ－α）与烧伤的关系。方法应用ＥＬＩＳＡ法检测４２例烧伤患者及２０例正常人血清ＩＬ－６、ＩＬ－８、ＴＮＦ－α水平。结果人院时患者的血清ＩＬ－６、ＩＬ－８、ＴＮＦ－α明显高于正常对照组。烧伤后第３天与人院时比较,ＩＬ－６无明显变化（Ｐ＞０．０５）;ＴＮＦ－α增高（Ｐ＜０．０１）;而ＩＬ－８在烧伤面积≤３０％者呈下降,≥３１％者呈升高趋势。烧伤后第７天,脓毒症患者ＩＬ－６、ＩＬ－８、ＴＮＦ－α水平明显高于非脓毒症患者（Ｐ＜０．０１）。死亡前３种细胞因子则显著升高。结论ＩＬ－６、ＩＬ－８、ＴｈＦ－α可能与烧伤的病理生理变化及预后有关。     

肠缺血——再灌流大鼠肠源性细胞因子TNFα和IL—6表达的变化及其机制

目的：观察肠缺血－－再灌流过程中肠源性ＩＮＦα和ＩＬ－６表达的规律并探讨介导肠源性细胞因子表达的因素。方法：采用ＲＴ－ＰＣＲ和ＲＩＡ的方法检测了肠缺血－－再灌流过程中小肠组织ＴＮＦα和ＩＬ６ｍＲＮＡ表达及其蛋白含量的变化,并测定组织丙二醛（ＤＭＡ）含量及肠静脉血浆ＬＰＳ浓度。结果：正常情况下小肠ＴＮＦα和ＩＬ－６ｍＲＮＡ令有少量表达,肠缺血１ｈ￣１．５ｈ,表达已开始增加,再灌流０．５￣１ｈ,表达至     

细胞因子抗体及地塞米松对小鼠脓毒血症心肌及骨骼 …

目的 观察和比较细胞因子抗体及地塞米松（ＤＸＭ）对脓毒血症心肌及骨骼骨细胞腺苷三磷酸（ＡＴＰ）含量的影响。方法 制作小收肠结扎穿孔（ＣＬＰ）脓毒血症模型，分别注射生理盐水、ＩＬ－１βＡｂ、ＴＮＦαＡｂ、ＩＬ－１γＡｂ、ＩＬ－１βＡｂ＋ＴＮＦαＡｂ＋ＩＦＮγＡｂ，以及ＤＸＭ，观察各组小鼠心肌及骨骼肌ＡＴＰ含量。结果 ①ＣＬＰ模型心肌及骨骼肌细胞ＡＴＰ含量严重减少。②ＩＬ－１βＡｂ、ＴＮＦαＡｂ使ＣＬ     

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.     

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.     

The clinicopathological and immuohistochemical analysis of solid-pseudopapillary tumor of the pancreas： report of 9 cases

Objective：To investigate the clinical features, pathological characteristics and immunophenotype of solid-pseudopapillary tumor of the pancreas（SPTP）. Methods：Nine surgically treated cases of SPTP were retrospectively reviewed. Hematoxylin and Eosin（HE） staining and immunohistochemical staining were used to analyze all cases, and the general clinical data was collected. Results：Six patients were asymptomatic except for a palpable mass. Two patients complained of vague-epigastric pain. One patient appeared jaundice. The tumor was encapsulated and solid tissues alternately with cystic tissues. Histologically, the histological structure of solid portion was pseudopapillary with a fibrovascular core. Tumor cells were uniform and medium-sized which were arranged in sheets ets or nests or pseudopapillary patterns. Immunohistochemical studies demonstrated that SPTP proved positive in vimentin（9/9 cases）, AAT（9/9 cases）, NSE（9/9 cases）, ACT（7/9 cases）, CK20（2/9 cases）, CgA（1/9 cases）, S-100（3/gcases）, PR（4/gcases）, Syn（3/9 cases） and CD56（5/9cases）, negative in CEA and ER. Conclusion：SPTP is a tumor predominantly occurring in young women frequently without special symptoms. This tumor has various characteristical histological patterns with different immunophenotype.     

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.