幽门螺杆菌的cagA基因和iceA基因与胃十二指肠疾病的关系

目的 :探讨幽门螺杆菌 (Helicobacterpylori,Hp)cagA基因及iceA基因的存在情况与胃十二指肠疾病的关系。方法 :用PCR方法检测 174例临床病人胃粘膜活检标本中Hp的cagA基因及iceA基因的存在情况。 结果 :cagA的检出率为 89.7% (15 6 / 174) ,iceA1的检出率为 6 2 .1% (10 8/ 174) ,iceA2的检出率为 32 .2 % (5 6 / 174) ,7例为iceA1和iceA2皆阳性 ,3例未能检测到iceA等位基因型。各疾病组间cagA、iceA1、iceA2的检出率无统计学差异。结论 :cagA基因及iceA基因不能作为本地区Hp毒力增强的标志。     

幽门螺杆菌iceA1，babA2基因型与临床消化疾病的关系

目的:研究镇江地区幽门螺杆菌(H.Pylori)iceA1, babA2基因型分布及其与临床消化疾病的关系.方法:从70例胃十二指肠疾病患者胃黏膜活检组织中分离培养H.Pylori,PCR扩增检测H.Pylori iceA1, babA2基因型.用χ2检验分析各基因在不同胃十二指肠疾病中的统计学意义. 结果:70例菌株的总检出率分别为iceA1 68.6%,babA2 65.7%.其中iceA1的分布为胃癌12/14(85.7%),慢性胃炎18/30(60%),消化性溃疡18/26(69.2%);而babA2的检出率为胃癌8/14(66.7%),慢性胃炎19/30(63.3%),消化性溃疡19/26(73.1%). 结论:镇江地区分离的H.Pylori的iceA1与babA2基因与胃癌、消化性溃疡、慢性胃炎等疾病类型的发生无显著相关性,但iceA1在胃癌中的检出率高于慢性胃炎与消化性溃疡患者.     

幽门螺杆菌vacA及cagA基因型与胃疾病的关系

目的探讨幽门螺杆菌(Hp)vacA、cagA基因型与胃疾病的关系。方法选取105例胃疾病病人,包括慢性浅表性胃炎(CSG)45例,慢性萎缩性胃炎(CAG)48例,胃癌(GC)12例。于胃窦处取3块胃黏膜,分别进行快速尿素酶反应、病理检查和聚合酶链反应(PCR)。提取胃黏膜基因组DNA,用6对引物检测Hp vacA、cagA基因的表达。结果快速尿素酶反应、病理检查均阳性的标本57例,Hp的阳性率为54.2%(57/105)。Hp vacA s1/m2、s1/m1、s2/m1、s2/m2的阳性率分别为53%(30/57)、18%(10/57)、8%(5/57)、21%(12/57);Hp cagA的阳性率为89%(51/57)。vacA、cagA基因型在CSG、CAG和GC之间差异无显著性(P>0.05)。结论Hp菌株的优势基因亚型为Hp cagA、vacA s1/m2;Hp vacA、cagA基因与特定胃疾病间无显著相关性,不能预示Hp感染的临床结果。     

Hp、p53在胃癌和癌前病变中的表达及相关性研究

目的:探讨Hp、p53在胃癌及癌前病变中的表达及相互关系.方法:采用特殊染色方法和免疫组化方法,检测130例不同胃粘膜病变石蜡包埋标本.结果:1.慢性浅表性胃炎(CSG)、慢性萎缩性胃炎(CAG)、非典型增生(DYS)和胃癌(GC)Hp阳性率分别为40%、60%、70%和72.5%,GC与CSG比较有显著差异(P<0.05).2.p53基因蛋白在CSG、 CAG、 DYS、 GC中的表达率分别为5%、 25%、 50%、 62.5%,其中GC与CAG、CSG 相比有明显差异(P<0.01).3.在80例胃癌标本中,Hp阳性组p53阳性表达率明显高于Hp阴性组(P<0.05). 结论: 1. Hp感染在胃粘膜病变的演变过程中起着重要作用. 2.突变型p53与胃癌的发生有关.3.p53的突变与Hp感染有密切关系.     

应用免疫印迹法探讨血清幽门螺杆菌抗体谱与上消化道疾病的关系

目的:用免疫印迹法检测幽门螺杆菌(Hp)感染中不同血清分型与慢性浅表性胃炎(CSG)、慢性萎缩性胃炎(CAG)、消化性溃疡(PU)和胃癌(GC)的关系。方法:选取确诊为Hp感染的上消化道疾病患者205例,用Western blot法(免疫印迹法)测血清幽门螺杆菌抗体谱,检测Hp抗体分型,分析CagA和/或VacA抗体阳性的表达情况。结果:在Hp现症感染中,CSG、CAG、PU、GC患者的HpⅠ型感染比例明显高于Ⅱ型感染(P0.01);PU及GC中HpⅠ型感染率高于CSG(P0.05)。不同年龄段及不同性别中HpⅠ型感染比例均高于Ⅱ型感染(P0.01)。各组的Hp I型感染者中以CagA+VacA抗体为主,检出率为77.4%;其中以CSG组最低(70.4%)、GC组最高(81.8%)。各组CagA+VacA抗体检出率显著高于单一CagA/VacA抗体检出率(P0.01)。结论:应用免疫印迹法进行幽门螺杆菌血清学分型检测对于上消化道疾病的判断有临床指导意义,Ⅰ型Hp感染更需要进行根治。     

Hp相关胃炎患者血清表皮生长因子(EGF)和β2-微球蛋白(β2- MG)水平研究

目的探索 EGF和β2- MG在 CSG- CAG- GC演变模式中的变化规律,探讨 Hp对 EGF和- MG有无影响.方法应用尿素酶试验法、血清学试验法和组织学诊断法,进行 Hp检查,应用放射免疫法检测血清 EGF及β2- MG水平. 结果 (一 )EGF水平 (μ g/L): (1)按 CSG- CAG- GC逐渐升高,依次为 0.3229± 0.225, 0.8823± 0.2549,1.3999± 0.8935,GC组高于 CSG组( P<0.01),也高于 CAG组( P<0.05), CAG组高于 CSG组( P<0.01).( 2) CSG患者 Hp(+)组( 0.2404± 0.1103)低于 Hp(- )组( 0. 4492± 0.2931)( P<0.01); CAG患者 Hp(+)组( 0. 8119± 0.279)低于 Hp(-)组( 1.0056± 0. 1704), GC患者 Hp(+)组( 1.159± 0. 9229)低于 Hp(-)组 (1. 4963± 0. 9127),均无统计学差异( P>0.05).(二)β2- MG水平( mg/l): (1)按 CSG- CAG- GC顺序增高,依次为: 1. 659± 0. 4321, 1. 9661± 1. 0802,2.3431± 0. 5951, GC组高于 CSG组( P<0.01) ,CAG组高于 CSG组, GC组高于 CAG组,均无统计学意义( P>0.05). (2)同一胃病 Hp(+ )组与 Hp(- )组比较血清β2- MG水平均无明显差异( P>0.05).结论按 CSG- CAG- GC, EGF水平逐渐升高,β2- MG有此种趋势. Hp有降低 EGF的作用, Hp对-β2 MG水平无明显影响.     

IL-23和PG-1水平在不同胃部疾病患者体内的临床表达意义

目的分析白细胞介素-23和胃蛋白酶原-1水平在不同胃部疾病患者体内的临床表达意义,为不同胃部疾病的早期鉴别提供参考依据。方法以187例胃部疾病患者为研究对象,按其诊断结果进行分组,检测患者胃组织IL-23表达及血清IL-23、PG-1表达,分析其相关性及临床表达意义。结果 CAG组病变组织IL-23水平高于CSG组,GC组病变组织IL-23水平高于CAG组(P0.05);CSG组织中IL-23为弱阳性表达,而CAG、GC组织中IL-23均为强阳性表达。CAG组血清IL-23水平高于CSG组,GC组血清IL-23水平高于CAG组(P0.05);CAG组血清PG-1水平低于CSG组,GC组血清PG-1水平低于CAG组,差异有统计学意义(P0.05)。CSG组(r=-0.470)、CAG组(r=-0.524)、GC组(r=-0.751)患者血清IL-23与PG-1均呈负相关(P0.05)。结论随着胃部疾病的进展,患者病变组织及血清IL-23水平逐渐升高,血清PG-1水平逐渐降低,根据患者病变组织及血清IL-23变化及IL-23/PG-1比值有望提高胃癌及癌前病变的早期检出率。     

Hp相关胃炎患者血清表皮生长因子（ECG）和β2—微球蛋白（β2—MG）水平研究

目的探索EGF和β2-MG在CSG -CAG -GC演变模式中的变化规律 ,探讨Hp对EGF和β2-MG有无影响。方法应用尿素酶试验法、血清学试验法和组织学诊断法 ,进行Hp检查 ,应用放射免疫法检测血清EGF及β2-MG水平。结果(一)EGF水平(μg/L) :(1)按CSG -CAG -GC逐渐升高 ,依次为0.3229±0.225 ,0.8823±0.2549,1.3999±0.8935,GC组高于CSG组 (P<0.01) ,也高于CAG组 (P<0.05) ,CAG组高于CSG组 (P<0.01)。(2)CSG患者Hp(+)组 (0.2404±0.1103)低于Hp( -)组 (0 .4492±0.2931) (P<0.01) ;CAG患者Hp(+)组 (0 .8119±0.279)低于Hp(- )组(1.0056±0.1704) ,GC患者Hp(+)组 (1.159±0 .9229)低于Hp(- )组(1 .4963±0 .9127) ,均无统计学差异 (P>0.05)。(二 ) β2-MG水平 (mg/l) :(1)按CSG -CAG -GC顺序增高 ,依次为 :1.659±0.4321 ,1 .9661±1 .0802,2.3431±0 .5951 ,GC组高于CSG组 (P<0.01),CAG组高于CSG组 ,GC组高于CAG组 ,均无统计学意义 (P>0.05)。(2)同一胃病Hp( +)组与Hp( -)组比较血清β2-MG水平均无明显差异 (P>0.05)。结论按CSG -CAG -GC ,EGF水平逐渐升高 ,β2-MG有此种趋势。Hp有降低EGF的作用 ,Hp对β2-MG水平无明显影响     

广州地区儿童感染幽门螺杆菌iceA基因亚型与胃炎的相关性研究

目的 探讨广州地区儿童感染幽门螺杆菌(H.pylori)的iceA基因亚型与胃炎的关系.方法 105例胃、十二指肠疾病患儿的胃窦处取3块胃黏膜,分别进行快速尿素酶反应、病理检查和聚合酶链反应(PCR).抽提胃黏膜基因组DNA,用3对引物检测H.pylori ureA和iceA基因,分析H.pylori iceA基因亚型与胃炎的关系.结果 105例样本中,快速尿素酶反应、病理检测和聚合酶链反应(PCR)三者均阳性的标本52例,H.pylori iceA1亚型菌株单独检出率78.84%(41/52),H.pylori iceA2亚型菌株单独检出率1.92%(1/52),H.pylori iceA1和iceA2亚型均阳性的检出率3.84%(2/52),iceA1和iceA2亚型均阴性的比率15.38%(8/52),H.pylori iceA1亚型阳性率与其它基因亚型相比较,差异有显著性;感染H.pylori iceA1亚型菌株的患儿中轻度慢性胃炎3例,中度慢性胃炎15例,重度慢性胃炎25例;未感染H.pylori iceA1亚型菌株的患儿中轻度慢性胃炎2例,中度慢性胃炎4例,重度慢性胃炎3例,感染H.pylori iceA1亚型菌株患儿与未感染H.pylori iceA1亚型菌株患儿的胃黏膜病变程度差异有显著性(P＜0.05).结论 H.pylori iceA1亚型是广州地区儿童感染H.pylori的优势基因亚型,H.pylori iceA1菌株容易引起较严重慢性胃炎.     

人胃黏膜幽门螺杆菌基因亚型检测与胃疾病

目的 探讨利用胃黏膜直接提取DNA检测幽门螺杆菌(Hp)基因亚型,以进行临床Hp感染判定的可行性,并进而探讨各基因亚型Hp感染与胃疾病的关系.方法 选取已知病理诊断的胃黏膜活检标本217例,进行细菌培养,同时提取黏膜Hp-DNA及菌种DNA,利用聚合酶链反应分别检测幽门螺杆菌ureB、cagA、vacA、iceA和baba2基因亚型.结果 胃黏膜来源HP-DNA与菌种来源Hp-DNA检测ureB、cagA、vacAs1、vacAm1b、vacAm2、iceA1、iceA2和baba2亚型,两者符合率分别为74.23%,73.39%,93.69%,62.16%,78.16%,89.13%,88.37%和75%,差异均无统计学意义(P＞0.05).各疾病组间,幽门螺杆菌ureB、cagA、vacAs1、vacAm1b、iceA1、iceA2和baba2亚型分布频率差异均无统计学意义(P＞0.05);vacA s1m1基因型在浅表性胃炎组(22.22%)分布频率最高,与萎缩性胃炎组(5.71%)相比,差异有统计学意义(x2=8.416,P=0.004);vacA slm2基因型在萎缩性胃炎组(47.14%)分布频率最高,与浅表性胃炎组(18.89%)相比,差异有统计学意义(x2=13.336,P=0.000).结论 胃黏膜直接提取DNA检测Hp基因型可以用于Hp感染的快速诊断.VacA s1m1基因型与浅表性胃炎相关,VacA s1m2基因型与萎缩性胃炎相关.     

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.