清热解毒凉血化瘀对内毒素肝损伤大鼠蛋白质表达的影响

目的：探讨清热解毒凉血化瘀对内毒素肝损伤大鼠蛋白质表达的影响。方法：采用腹腔注射内毒素（LPS）复制内毒素肝损伤模型,大鼠随机分为正常对照组、模型组、中药高剂量组、中药低剂量组,用SELDI-TOF-MS技术分析大鼠血清差异表达蛋白。结果：样品血清中共获得与芯片结合的11个有效蛋白质峰。其中相对分子质量为4200道尔顿的蛋白峰在中药干预组的血清中高表达,相对分子质量为8984道尔顿、9005道尔顿的蛋白峰在中药干预组低表达。结论：内毒素肝损伤模型大鼠血清内确实存在差异表达蛋白,这可能有助于内毒素肝损伤的进一步研究。     

表面增强激光解吸离子化飞行时间质谱技术筛选蕈样肉芽肿血清生物标志物

目的 应用表面增强激光解吸离子化飞行时间质谱技术(SELDI-TOF-MS)筛选蕈样肉芽肿患者血清中的生物标志物.方法 采用CM10蛋白质芯片捕获14例蕈样肉芽肿患者(研究组)和17例对照者(对照组)血清中的蛋白质,结合BiomarkerWizard软件进行分析.结果 所有标本在相对分子质量0～50000范围内均能检测出131个左右的蛋白峰.两组血清样本的蛋白质指纹图谱存在14个差异表达蛋白质峰,其中相对分子质量为7670的蛋白质峰与C-C基序趋化因子22相符.结论 SELDI-TOF-MS可用于蕈样肉芽肿患者血清生物标志物的筛选.     

应用SELDI-TOF-MS技术筛选人肝癌细胞多药耐药相关差异表达蛋白

【目的】通过SELDI-TOF-MS技术筛选体外培养人肝癌细胞多药耐药相关差异表达蛋白。【方法】采用体外培养人肝癌细胞Bel-7402及其耐5-氟尿嘧啶细胞Bel-FU,MTT法检测Bel-FU的多药耐药性;SELDI-TOF-MS技术结合CM-10芯片检测Bel-7402与Bel-FU蛋白质指纹图谱。【结果】细胞Bel-FU对于5-氟尿嘧啶、阿糖胞苷、长春新碱、阿霉素、柔红霉素的耐药指数分别为:89.6倍、3.9倍、37.2倍、16.5倍、3.7倍。在质荷比(M/Z)2 000～50 000的范围内,Bel-FU与Bel-7402间共检测到8个差异蛋白(P<0.05),其中上调蛋白有3个,下调蛋白有5个。【结论】SELDI-TOF-MS技术为筛选肝癌MDR蛋白标志物提供了一个简便、有效的方法。     

利用蛋白质指纹图谱技术检测硒诱导金属硫蛋白实现大鼠肝纤维化防护作用

【目的】探索硒诱导金属硫蛋白及其对大鼠肝纤维化防护作用的蛋白质指纹图谱改变。【方法】利用表面增强的激光解析离子化-飞行时间-质谱(SELDI-TOF-MS)技术测定硒对金属硫蛋白的诱导,寻找大鼠肝纤维化的异常蛋白表达标志并评估硒代金属硫蛋白的防护作用。【结果】IMAC-Cu蛋白质芯片6279 Da和6650Da处特征性MT蛋白质表达增强证实硒对MT的高诱导作用;肝组织点样的WCX2芯片5 140Da综合峰的两峰与正常组相对应处比较明显倒置,血清点样的H4芯片7 105 Da左右的蛋白质出现高表达,4 820Da左右的蛋白质表达受抑,三种图谱变化是大鼠酒精性肝纤维化的相关信号蛋白;硒诱导MT增高后上述异常表达均有改善,说明有机硒对肝纤维化有防护作用。【结论】组织和血清的蛋白质指纹图谱可以作为肝纤维化疗效监测和评价的一类标志物,为今后进行更多的药物或方法筛选奠定了一种可以尝试的试验模式。     

SELDI-TOF-MS技术在筛选肝癌患者血清标记物中的应用

目的:筛选肝癌患者血清中特异标记物.方法:利用表面加强激光解吸电离-飞行时间质谱(SELDI-TOF-MS)技术及其配套蛋白质芯片,对33例肝癌患者、33例正常人和17例慢性肝病患者的血清蛋白质图谱进行检测,结合Biomarker Patterns Software(BPS)建立诊断模型.结果:肝癌患者与正常人和慢性肝病患者血清蛋白质图谱在相对分子质量为2 000～50 000范围内,有73个蛋白质峰差异有统计学意义(P＜0.05).经软件分析,建立由相对分子质量为4 177和7 789的标记蛋白组成的肝癌诊断模型,其诊断肝癌灵敏度为81.8%(27/33),特异度为80%(40/50).结论:SELDI-TOF-MS蛋白质芯片技术是一种快速、简便易行、用量少和高通量分析方法,不仅能直接筛选出肝癌患者血清中相对特异的潜在标记物,而且具有较好的临床应用价值.     

应用表面增强激光解吸离子化飞行时间质谱筛选蕈样肉芽肿组织生物标志物

目的 采用表面增强激光解吸离子化飞行时间质谱(SELDI-TOF-MS)技术,筛选蕈样肉芽肿(MF)患者皮损组织中的生物标志物.方法 选用CMIO蛋白质芯片对12例MF患者皮损和15份正常皮肤组织提取蛋白质标本进行检测,以筛选MF患者组织中差异表达蛋白质.通过免疫沉淀方法 对部分差异表达蛋白质进行验证.结果 MF组与对照组蛋白质指纹图谱比较,发现24个差异表达蛋白质峰.将差异蛋白质峰在SWISS-PRO数据库和文献中搜索,发现相对分子质量3498的蛋白质峰与人中性粒细胞蛋白3(HNP3)相符、相对分子质量10 837的蛋白质峰与S100钙结合蛋白A8(S100A8)相符,抗S100A8特异性抗体免疫沉淀试验验证了后者.结论 SELDI-TOF-MS技术是一种快速,易行的高通量蛋白质组研究方法 ,能够鉴定出MF组织中的差异表达蛋白质,为寻找疾病相关生物学标记的提供了独特的平台.     

用激光捕获显微切割联合蛋白质芯片筛选肺鳞癌和腺癌组织差异蛋白

目的 应用激光捕获显微切割(LCM)联合表面增强激光解吸离子化飞行时间质谱(SELDI-TOF-MS)蛋白质芯片及支持向量机(SVM)方法筛选肺鳞癌和腺癌差异表达蛋白质,探讨二者在蛋白水平的差异,为筛选肺癌分型标志物提供依据.方法 将6例新鲜肺鳞癌及7例腺癌组织标本用LCM选择性获取1.4×105个同质鳞癌细胞和1.2×105个同质腺癌细胞.经PBS Ⅱ+型SELDI-TOF-MS分析仪(IMAC芯片)分析鳞癌及腺癌细胞蛋白质表达谱,比对差异峰;应用SVM筛选并验证候选标志蛋白的判别效能.结果 比较鳞癌和腺癌细胞的SELDI谱图,共筛选出87个蛋白峰.将差异最明显的10个蛋白峰作为候选标志蛋白.与腺癌相比,4种蛋白(相对分子质量分别为2505、4004、4847及11 412)在鳞癌中呈高表达;与鳞癌相比,6种蛋白(相对分子质量分别为3333、3592、3848、5036、5191及5211)在腺癌中呈高表达.其中相对分子质量为4847的蛋白在鳞癌和腺癌中表达差异有统计学意义.用SVM建立分类预测模型并评价各模型效能,筛选出一个由3种蛋白质(相对分子质量分别为4847、11 412和3592)组成的分型标志蛋白组合模式,其敏感度和特异度均为100%.结论 肺鳞癌和腺癌在蛋白水平存在差异;LCM联合SELDI蛋白质芯片技术有可能筛选出敏感性高、特异性强的肺癌分型标志蛋白组合模式.     

血清蛋白质指纹图谱与非小细胞肺癌临床分期关系的研究

目的 检测非小细胞肺癌患者的血清蛋白质谱,探讨非小细胞肺癌血清蛋白质指纹图与临床分期的关系,为非小细胞肺癌预后判断、临床治疗决策选择提供依据。方法 共收集69例非小细胞肺癌患者血清,应用阳离子交换蛋白(CM10)芯片,通过表面增强激光解吸电离-飞行时间-质谱(SELDI-TOF-MS)技术检测非小细胞肺癌患者血清蛋白质质谱,应用生物信息学方法分析血清蛋白质指纹图与非小细胞肺癌临床分期的关系。结果 比较28例Ⅰ～Ⅱ期与41例Ⅲ～Ⅳ期非小细胞肺癌蛋白指纹图,共筛选出68个有显著性差异的质荷比峰(m/z),最终筛选出2个潜在标志物5632m/z、13779m/z。5632m/z、13779m/z均在Ⅲ～Ⅳ期非小细胞肺癌中高表达,在Ⅰ～Ⅱ期非小细胞肺癌中低表达。将此标记物作为非小细胞肺癌分期模型,其正确指数为0.587,一致率为79.5%,Kappa=0.32。结论 SELDI-TOF-MS技术检测非小细胞肺癌患者血清蛋白质质谱,筛选出m/z位于5632、13779的蛋白质峰可能是非小细胞肺癌术前临床分期的标记物。     

应用蛋白质芯片技术检测大鼠脑损伤后血清差异蛋白

【目的】探讨用蛋白质芯片技术筛选大鼠脑损伤后血清中蛋白质表达谱的变化及其特点。【方法】复制Marmarou’s落体打击脑损伤模型,采用弱阳离子交换芯片（WCX-2）和金属亲和吸附芯片（IMAC-Cu）结合表面增强激光解析电离飞行时间质谱技术分析大鼠闭合性脑损伤后4、8、12、24、48 h血清中蛋白质表达谱的改变。【结果】WCX-2芯片在血清中共捕获436个蛋白质峰;IMAC-Cu芯片共捕获229个蛋白质峰。与手术对照组相比,脑损伤后两种芯片共检测到121个蛋白质表达增高,20个蛋白质表达降低。与手术对照组相比,在WCX-2芯片上损伤组共有53个蛋白质峰的相对强度有显著性差异（P〈0.05）;在IMAC-Cu芯片上损伤组共有16个蛋白质峰的相对强度有显著性差异（P〈0.05）。此外,在WCX-2芯片上损伤组共检测到53个蛋白质峰没有出现在手术对照组;在IMAC-Cu芯片上损伤组共检测到有19个蛋白质峰没有出现在手术对照组。【结论】脑损伤可引起血清中蛋白质表达谱发生变化。     

蛋白质指纹图谱技术探索硒诱导金属硫蛋白对小鼠肺纤维化的防护作用

【目的】利用蛋白质指纹图谱技术探索硒诱导金属硫蛋白（metallothionein,MT）对小鼠肺纤维化的防护作用。【方法】利用表面增强的激光解析离子化-飞行时间-质谱（SELDI-TOF-MS）技术测定硒对MT的诱导,寻找小鼠肺纤维化的异常蛋白表达标志并评估硒代MT的防护作用。【结果】IMAC-Cu芯片表达的蛋白质中发现分子量为6277 Da的一组脱金属MT2蛋白表达增强证实硒对MT的高诱导作用;在WCX2和H4芯片中,发现肺纤维化小鼠中肺组织和血清中存在分子量分别为3880 Da和3 364 Da的两蛋白的表达与正常组比较明显受到抑制,硒诱导MT增高后上述异常表达均有改善,说明有机硒可能对肺纤维化诱导产生的蛋白异常具有一定的防护作用。【结论】利用蛋白质指纹图谱技术分析组织和血清的蛋白特异性表达可以作为肺纤维化疗效监测和评价的一类标志物,为今后进行更多的药物或方法筛选提供了一种可以尝试的实验模式。     

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.