皮肤鳞状细胞癌Bcl—2蛋白的表达

目的：研究Ｂｃｌ－２蛋白产物在皮肤鳞状细胞癌（ＳＣＣ）中的表达及其意义。方法：应用Ｓ－Ｐ免疫组化方法检测。结果：１０例ＳＣＣ均表达Ｂｃｌ－２蛋白，而且肿瘤细胞Ｂｃｌ－２蛋白表达强度与表皮Ｂｃｌ－２蛋白表达强度及肿瘤Ｂｒｏｄｅｒ病理分级呈显著正相关（ｒ′ｓ分别为１和０．９１９，Ｐ分别＜０．００１）。结论：支持皮肤ＳＣＣ起源于表皮，表明Ｂｃｌ－２蛋白与皮肤ＳＣＣ的发生与发展密切相关。     

IL—12,LPS对肾小管上皮细胞中lck／P38信号传递的影响

目的：探讨ＩＬ－１２、ＬＰＳ对肾小管上皮细胞中ｌｃｋ基因表达及活性改变的影响，明确ｌｃｋ／Ｐ３５信号传递途径在炎症过程的作用。方法：用原位杂交、放射自显影分别检测ｌｃｋ基因表达及ｌｃｋ活性，用免疫印迹法对明小管上皮细胞在ＩＬ－１２、ＬＰＳ刺激下其Ｐ３８磷酸化进行测定。结果：肾小管上皮细胞径ＩＬ－１２，ＬＰＳ刺激后ｌｃｋｍＲＮＡ表达水平增高，ｌｃｋ知性在刺激后５ｍｉｎ时最强，加入ｌｃｋ抑制剂ＰＰ１     

人类bcl—2蛋白在CHOdhfr^—细胞中的表达

目的：建立表达人类ｂｃｌ－２蛋白的哺乳类细胞模型，为探讨ｂｃｌ－２的作用机制及其与其它基因间的关系奠定基础。方法：通过将９１０ｂｐ的含有完整开放阅读框的人类ｂｃｌ－２ ｃＤＮＡ以正向克隆逆转录病毒载体ｐＬＸＳＮ的ＥｃｏＲＩ位点而构建重组真核表达载体ｐＬＸＳＮ／ｓ－ｂｃｌ－２。利用电穿孔技术将ｐＬＸＳＮ／ｓ－ｂｃｌ２转染于ＣＨＯｄｈｆｒ＾－细胞，筛选＋出Ｇ４１８抗性克隆，经免疫印迹检测人类ｂｃｌ－２     

脑胶质瘤中P53、Bcl—2、Bax蛋白的表达

目的：探讨Ｐ５３、Ｂｃｌ－２、Ｂａｘ蛋白在脑胶质瘤表达水平以及和细胞凋亡的相关性。方法：采用免疫组化Ｓ－Ｐ染色法检测４７例脑胶质瘤组织中Ｐ５３、Ｂｃｌ－２、Ｂａｘ蛋白的表达民情况。结果：在４７例脑胶质瘤中,Ｐ５３、Ｂｃｌ－２、Ｂａｘ蛋白的阳性率分别为４８．９％（２３／４７）,５７．４％（２７／４７）,１７．０２％（８／４７）（ｐ〈０．０５）;发现ＧＢＭ的Ｐ５３蛋白阳性水平要高于ＡＳ;Ｂｃｌ－２蛋白     

抗凋亡基因Bcl—2在人卵巢癌表达的免疫组化检测

目的：了解Ｂｃｌ－２在卵巢癌中的表达情况，以探讨Ｂｃｌ－２在卵巢癌发生中的作用及其在临床诊断和预后方面的意义。方法：以ＳＡＢＣ免疫组化技术检测了５０例临床标本中Ｂｃｌ－２的表达状况。结果：１４／３０例卵巢癌呈阳性表达（４６．７％），全部属上皮性卵巢癌；４／１０例交界性卵巢肿瘤及２／１０例良性卵巢肿瘤有Ｂｃｌ－２表达。Ｂｃｌ－２的阳性率与卵巢肿瘤的良恶性及其临床分期未见显著相关性。结论：Ｂｃｌ－２在     

8—Br—cAMP对肺癌NSCLC—3细胞凋亡相关基因表达的影响

目的：观察８－Ｂｒ－ｃＡＭＰ对人肺癌ＮＳＣＬＣ－３细胞凋亡相关基因表达的影响。方法：将体外培育的ＮＳＣＬＣ－３细胞分为实验组和对照组,采用原位杂交方法观察８－Ｂｒ－ｃＡＭＰ对ＮＳＣＬＧ－３细胞ｃ－ｍｙｃ、ｂｃｌ－２基因表达的影响。结果：８－Ｂｒ－ｃＡＭＰ处理后的实验且较未加８－Ｂｒ－ｃＡＭＰ的对照组－ｃ－ｍｙｃ,ｂｃｌ－２基因表达降低（Ｐ〈０．０１）。结论：８－Ｂｒ－ｃＡＭＰ可下调与ＮＳＣＬＣ－３     

Bcl-2蛋白表达与乳腺癌预后相关的病理参数的研究

目的：探讨Ｂｃｌ－２蛋白在乳腺癌及良性乳腺病变中的表达,观察Ｂｃｌ－２蛋白与乳腺癌预后参数的关系。方法：采用免疫组化方法检测 ６９例浸润乳癌,４５例导管原位癌（ｄｕｃｔａｌｃａｒｃｉｎｏｍａ ｉｎ ｓｉｔｕ,ＤＣＩＳ）,１５例正常乳腺组织,３８例乳腺良性增生病变中Ｂｃｌ－２蛋白表达。结果：Ｂｃｌ－２蛋白在浸润乳癌,ＢＣＩＳ,乳腺良性增生病变以及正常乳腺组织阳性率分别为６５．２％,７５．６％,１００％,１００％。Ｂｃｌ－２蛋白表达与乳腺癌好的预后参数有关,如肿瘤体积小,低的组织学分级,ＥＲ、ＰＲ阳性,坏死出现少（Ｐ＜０．０１）,低ｐ５３蛋白表达（Ｐ＜０．０５）,与腋淋巴结浸润没有关系（Ｐ＞０．０５）。大部分乳腺癌表现 Ｂｃｌ－２＋／ｐ５３－表达表型,多属于高分化和中分化病例。而正常乳腺组织,良性增生病变中均为 Ｂｃｌ－２＋／ｐ５３－表达表型。结论：①Ｂｃｌ－２蛋白在正常乳腺组织、良性增生病变的表达高于乳腺癌的表达。②Ｂｃｌ－２蛋白表达与好的乳腺癌预后因素有关。③Ｂｃｌ－２与ｐ５３两种基因蛋白负相关。     

喉癌放疗敏感性与Bcl-2基因表达

目的：分析喉癌Ｂｃｌ－２基因表达及其与放疗敏感性的相互关系。方法：采用抗Ｂｃｌ－２基因蛋白单克隆抗体，采用免疫组织化学ＤＡＣＯＣＳＡＳｙｓｔｅｍ法染色技术，对７３例喉鳞癌组织标本进行分析研究。通过χ２检验判定喉癌放疗敏感组与放疗非敏感组间的Ｂｃｌ－２基因表达具有明显差异。通过Ｃｒａｍｅｒ（修正）列联系数（Ｃ）进行检验，说明喉癌放疗敏感性与Ｂｃｌ－２基因表达强度间有明显相关性。结果：可将Ｂｃｌ－２基因表达分为强度表达，中度表达及阴性表达。基因表达与放疗敏感性间有明显相关性（Ｐ＜０．０１）。随表达增强喉癌放疗敏感性相应降低。结论：可以把喉癌Ｂｃｌ－２基因表达作为喉癌放射治疗预后判定的可靠指标之一，并作为临床医生选择治疗方案的参考指标。     

胃粘膜上皮细胞系GES—1细胞凋亡密度依赖性的研究

目的：探讨细胞密度对ＧＥＳ－１细胞凋亡的影响及其机制。方法：细胞凋亡的存在以Ｇｉｅｍｓａ染色证实，ｂｃｌ－基因的表达采用细胞原位杂交技术。结果：正常培养情况下ＧＥＳ－１细胞凋亡呈细胞密度依赖性，８ｍｇ／Ｌ的五肽胃泌素能增强ｂｃｌ－２基因的表达但不能抑制密度依赖的细胞凋亡。结论：ｂｃｌ－２基因表达可能与ＧＥＳ－１细胞凋亡的密度依赖性无关。     

胃癌和肠化上皮组织微卫星不稳定性及bcl—2,erbB—2和p53？…

目的：研究微卫星不稳定性（ＭＳＩ）在胃癌发生中的作用及其与ｂｃｌ－２、ｅｒｂＢ－２和突变型Ｐ５３蛋白表达的关系。方法：采用ＰＣＲ－ＳＳＬＰ和免疫组织化学技术检测了５０例手术切除胃癌和１５例肠化组织标本的ＭＳＩ和ｂｃｌ－２、ｅｒｂＢ－２及突变型Ｐ５３蛋白表达。结果：胃癌ＭＳＩ发生率为５４％，肠化组织ＭＳＩ发生率为２０％。胃癌组织ｂｃｌ－２、ｅｒｂＢ、及ｐ５３蛋白阳性率分别为６０％、２２％和３８％，肠     

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.