吸烟对多环芳烃接触者生物膜损伤指标,染色体畸变和P21蛋 …

目的：了解吸烟艰多环芳烃接触者生物膜损伤指标、染色体畸变和血清癌基因蛋白Ｐ２１的影响。方法：Ｐ对接触多环芳烃化合物的２４名焦炉工和２７名沥青工中吸烟与不吸烟者的血清谷胱甘肽Ｓ－转移酶（ＧＳＴ）、血清脂质结合唾液酸（ＬＳＡ）、染色体畸变和血清癌基因蛋白Ｐ２１水平进行研究。结果：吸烟与不吸烟者间ＧＳＴ、ＬＳＡ、染色体畸变率和血清Ｐ２１水平各指标差异均无显著性差异（Ｐ〉０．０５）。结论：吸烟对多环芳烃接     

多环芳烃接触者染色体畸变和血清P21水平检测

目的 :了解多环芳烃接触者遗传指标和血清癌基因蛋白P2 1表达水平及其在肺癌早期诊断中的意义 ,为多环芳烃作业者的劳动保护提供科学依据。方法 :对接触多环芳烃化合物的焦炉工 2 4名、沥青工 2 7名和健康对照组 31名的染色体畸变率和血清癌基因蛋白P2 1水平进行了检测。结果 :染色体异常检出率 ,焦炉工和沥青工均显著高于对照组 (P <0 .0 0 5 ) ;染色体裂隙次数 ,焦炉工和沥青工均显著高于对照组 (P <0 .0 1) ;染色体结构、数目畸变数 ,焦炉工显著高于对照组 (P <0 .0 1)。血清P2 1水平 ,焦炉工、沥青工均显著高于对照组 (P <0 .0 5 ) ,沥青工显著高于焦炉工 (P <0 .0 5 )。结论 :多环芳烃化合物具有遗传毒性 ,并可致血清P2 1蛋白水平升高。     

多环芳烃接触者染色体畸变和血清P21水平检测

目的：了解多环芳烃接触者遗传指标和血清癌基因蛋白Ｐ２１表达水平及其在肺癌早期诊断中的意义。为多环芳烃作业者的劳动保护提供科学依据。方法：对接触多环芳烃化合物的焦炉工２４名、沥青工２７名和健康对照组３１名的染色体畸变率和血清癌基因蛋白Ｐ２１水平进行了检测。结果：染色体异常检出率,焦炉工和沥青工均显著高于对照组（Ｐ〈０．００５）;染色体裂隙次数,焦炉攻沥青工均显著高于对照组（Ｐ〈０．０５）,染色体系结     

血清P53蛋白检测对职业性肺癌的预报价值

目的 :探讨血清P5 3蛋白作为职业性肺癌早期监测指标的可能性和应用价值。方法 :对长期接触多环芳烃混合物 (PAHs)的 2 3名焦炉工和 18名沥青工进行外周血淋巴细胞染色体畸变检查初筛 ,检出染色体畸变者各16名 ,然后采用双抗夹心酶联免疫吸附试验方法 (Sandwich ELISA)测定畸变者血清P5 3蛋白水平。以 12名正常献血员为对照组。结果 :焦炉工和沥青工血清P5 3水平均值高于对照组 (P <0 .0 5 ) ,其中 10例高于对照组 ( x 2s)。结论 :血清P5 3水平可从基因水平反映PAHs对机体遗传物质的损伤作用 ,该指标有可能成为职业性肺癌早期监测的又一途径。     

血清P53蛋白检测对职业性肺癌的预报价值

目的：探讨血清Ｐ５３蛋白作为职业性肺癌早期监测指标的可能性和应用价值。方法;对长期接触多环芳烃混合物（ＰＡＨＳ）的２３名焦炉工和１８名沥青工进行外周血淋巴细胞染色体畸变检查初筛,检出染色体畸变者各１６名,然后采用双抗夹心酶联免疫吸附试验方法９Ｓａｎｄｗｉｃｈ－ＥＫＬＩＳＡ）测定畸变者血清Ｐ５３蛋白水平。以１２名正常献血员为对照组。结果：焦炉工和沥青工血清Ｐ５３水平均值高于对照组（Ｐ〈０．０５）,其     

焦炉工染色体畸变和血清p53蛋白水平的检测

目的：探讨职业性肺癌早期监测指标染色体畸变及血清ｐ５３蛋白的应用价值。方法：选择长期接触多环芳烃混合物（ＰＡＨｓ）的２３名焦炉工为研究对象，另选１２名非暴露者为对照，进行外周血淋巴细胞染色体畸变检查，对有畸变者采用双抗夹心酶联免疫吸附试验（Ｓａｎｄｗｉｃｈ－ＥＬＩＳＡ）测定血清ｐ５３蛋白水平。结果：焦炉工染色体异常检出率高于对照组（Ｐ＜０．０５），畸变类型为单体型，以裂隙为主；焦炉工血清ｐ５３水平均值高于对照，但差异无显著性，其中５例血清ｐ５３水平高于对照组ｘ＋２Ｓ，判为阳性；两指标间无相关关系。结论：染色体畸变及血清ｐ５３水平可从不同途径反映ＰＡＨｓ对机体遗传物质的损伤作用，两者的联合应用是提高肿瘤预报性的有效途径     

多环芳烃接触者生物膜损伤指标及T淋巴细胞亚群测定

目的 :探讨肺癌发病机制及早期监测指标 ,为多环芳烃作业人员劳动保护提供科学依据。方法 :对 5 1名多环芳烃类混合物接触者 (接触组 ) ,18例非肺癌患者 ,2 5例肺癌患者和 31名健康人员的血清脂质结合唾液酸(LSA)、谷胱甘肽S 转移酶 (GST)活性、超氧化物歧化酶同工酶 (SOD ,MnSOD和CuMnSOD)和T淋巴细胞亚群 (T3,T4,T8及T4/T8)进行测定。结果 :接触组、肺癌组和非肺癌组LSA均显著高于对照组 (P <0 .0 1)。接触组、非肺癌组和肺癌组GST显著高于对照组 (P <0 .0 5 )。肺癌组SOD显著高于非肺癌组 (P <0 .0 5 )。接触组、肺癌组和非肺癌组T3均显著低于对照组 (P <0 .0 5 ) ,接触组T3显著高于非肺癌组和肺癌组 (P <0 .0 5 ) ;接触组、非肺癌组和肺癌组T4均显著低于对照组 (P <0 .0 5 ) ,接触组T4显著高于非肺癌组 (P <0 .0 5 ) ;非肺癌组T4/T8显著低于对照组 (P <0 .0 1) ,接触组T4/T8显著高于非肺癌组 (P <0 .0 5 )。结论 :多环芳烃接触者生物膜出现了损伤性改变 ,免疫功能受到抑制。     

焦炉工血清ras P21水平和外周血淋巴细胞SCE率检测

目的:为了解接触焦炉逸散物职业性人群遗传效应的改变,从分子水平揭示焦炉逸散物的遗传毒作用.方法:对25名焦炉工和12名正常对照分别检测了血清P21和外周血淋巴细胞姐妹染色单体互换(SCE)率.结果:发现焦炉工P21水平(3 774.2)、SCE率(11.43)明显高于对照组P21水平(1 270.7)和SCE率(6.37);焦炉工中,炉顶工血清P21均值(4 377.5)高于其它工种(3 300.1),炉顶工SCE(13.51)明显高于其它工种(10.07);对焦炉工按是否吸烟进行比较,未发现组间P21和SCE有差异显著性.结论:提示焦炉逸散物具有较强的遗传毒理学效应,可提高机体癌蛋白P21水平和SCE频率.     

煤焦沥青接触者血清SOD、MDA及唾液酸检测

目的:检测煤焦沥青接触者血清超氧化物歧化酶总量(SOD)、丙二醛(MDA)及唾液酸(SA)水平,探讨职业性肺癌的早期预警指标.方法:焦炉工55人(接触组),某高校教师、学生及职工40人(非接触组),采用硫代巴比妥酸法测定其血清MDA水平,采用黄嘌呤氧化快速比色法测定T-SOD水平,采用比色法测定SA水平.结果:接触组血清MDA、SA含量高于非接触组(P＜0.001),血清T-SOD含量低于非接触组(P＜0.001).接触组不同年龄及工龄组之间各指标差异均无统计学意义(P＞0.05).结论:煤焦沥青可导致接触者生物膜的明显损伤.SOD、MDA、SA等指标可用于职业性肺癌的早期预警.     

焦炉工外周血淋巴细胞姐妹染色体互换检测

目的:为筛选职业性肺癌高危人群的早期预报指标,对19例焦炉工和12例对照进行了研究。方法:用外周血淋巴细胞培养法检测了外周血淋巴细胞的姐妹染色体互换(SCE)。结果:焦炉工 SCE 率明显高于对照;焦炉工中吸烟与不吸烟者 SCE 间无明显差异。结论:焦炉逸散物具有明显的遗传毒理学效应,对焦炉工染色体可造成一定的损伤。     

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.