钙激动剂对心肌肥大有关信号转导的作用

目的 探讨钙激动剂对心肌细胞丝裂素活化蛋白激酶（ＭＡＰＫ）活性,ｃ－ｆｏｓ、ｃ－ｍｙｃ蛋白核转位表达,及蛋白核酸合成的影响。方法 应用血管紧张素Ⅱ（ＡｎｇⅡ,１０＾－７ｍｏｌ／Ｌ）刺激原代培养的心肌细胞钙内流,雷尼丁（ＲＹ,１０＾－７ｍｏｌ／Ｌ）刺激胞内钙释放;刺激５ｍｉｎ时测ＭＡＰＫ活性,免疫组化方法检测刺激５、１０、２０、３０ｍｉｎ时ｃ－ｆｏｓ、ｃ－ｍｙｃ蛋白定位表达;＾３Ｈ－Ｌｅｕ和＾３Ｈ－ＴｄＲ掺入法检测刺激２４ｈ心肌细胞蛋白核酸合成。结果 ＡｎｇⅡ和ＲＹ刺激心肌细胞５ｍｉｎ时ＭＡＰＫ活性均明显增高,与对照心肌细胞相比差异显著（Ｐ〈０．０１）。免疫组化结果显示,ＲＹ刺激心肌细胞ｃ－ｆｏｓ、ｃ－ｍｙｃ蛋白核转位表达早于ＡｎｇⅡ。ＡｎｇⅡ和ＲＹ刺激２４ｈ,心肌细胞蛋白核酸合成显著增高,与对照组心肌细胞相比差     

大鼠脑损伤时神经细胞c—fos,c—jun和c—myc基因表达变化

目的 观察大鼠脑损伤不同时间皮质神经细胞早期快反应基因ｃ－ｆｏｓ、ｃ－ｊｕｎ、ｃ－ｍｙｃ表达变化。方法 应用 Ｎｏｒｔｈｅｒｎ杂交、原位杂交和免疫组织化学方法检测皮质神经细胞中ｃ－ｆｏｓ、ｃ－ｊｕｎ、ｃ－ｍｙｃ的表达。结果 脑损伤后１５ｍｉｎ,伤测皮质神经细胞出现上述３种基因ｍＲＮＡ的表达,随时间的延长,表达逐渐增加,于伤后３ｈ达高峰并持续至伤后２５ｈ伤后,伤后７２ｈ恢复至对照水平ｃ－ｆｏｓ、ｃ－     

大鼠宫内缺血缺氧后c—fos的表达与神经细胞凋亡的关系

目的：探讨大鼠围产期缺血缺氧脑损伤发病机制。方法：结扎Ｗｉｓｔａｒ孕鼠子宫血管，建立胎鼠缺血缺氧脑损伤模型。用原位杂交及原位末端标记法检测剖宫产产后存活不同时间鼠大脑ｃ－ｆｏｓｍＲＮＡ的表达及神经元凋亡的情况。结果：缺血后即刻大脑皮层和海马出现ｃ－ｆｏｓｍＲＮＡ的表达，缺血后１－２ｈ和２４ｈｃ－ｆｏｓｍＲＮＡ出现两次高表达；而对照组仅在生后１ｈ海马有较少量的表达。缺血后２ｄ神经细胞凋亡数明显多于对     

体外鼠脑星形胶质细胞损伤后c—fos蛋白,GFAP及其mRNA的动态…

研究ｃ－ｆｏｓ蛋白，ＧＦＡＰ－ｍＲＮＡ和ＧＦＡＰ在鼠脑星形胶质细胞损伤后反应性星形胶质化时的动态变化。用 ＡＳ原代培养技术建立体外ＡＳ机械损伤模型，并结合应用免疫组织化学和原位杂交方法。结果（１）ｃ－ｆｏｓ蛋白于损伤后４５ｍｉｎ即有阳性表达，伤后２ｈ消失Ｄ（２）损伤缘的ＡＳ于损伤后６ｈ开始表达ＧＦＡＰ－ｍＲＮＡ，１ｄ达主同峰，３ｄ则在损伤边缘少数ＡＳ中可检出ＧＦＡＰ－ｍＲＮＡ；（３）损伤后１ｄ，Ｇ     

卡托普利抑制自发性高血压大鼠左心室肥厚与血管紧张素Ⅱ及原癌基因c－myc，c－fos表达的关系

目的高血压左心室肥厚是心肌细胞肥大、间质细胞（主要是成纤维细胞）增生和胶原堆积的结果，这一病理改变与心脏局部肾素－血管紧张素系统和某些癌基因的表达密切相关。本文探讨自发性高血压大鼠左心室肥厚与心肌细胞及成纤维细胞的局部血管紧张素Ⅱ（ＡｎｇⅡ）及原癌基因ｃ－ｍｙｃ，ｃ－ｆｏｓ表达的关系，以及卡托普利逆转左心室肥厚的可能机理。方法雄性ＳＨＲ大鼠（ｎ＝４３）从宫内期开始给予卡托普利治疗（１００ｍｇ／ｋｇ·ｄ－１），到１６周停药，处死。性别、年龄配对的未治疗ＳＨＲ（ｎ＝３１）和ＷＫＹ大鼠（ｎ＝３２）作对照。测定收缩压（ＳＢＰ）、心率（ＨＲ）、左室重（ＬＶＭ）与体重（ＢＷ）比、左心室ｃ－ｍｙｃ，ｃ－ｆｏｓｍＲＮＡ表达（ＮｏｒｔｈｅｒｎＢｌｏｔ）、右心室心肌细胞与成纤维细胞的ｃ－ｍｙｃ蛋白、ｃ－ｆｏｓ蛋白、ＡｎｇⅡ表达（ＷｅｓｔｅｒｎＢｌｏｔ，免疫组化）。结果卡托普利早期治疗显著降低ＳＨＲ１６周时的ＳＢＰ（１３８．４１±１８．０１ｍｍＨｇｖｓ１９３．２２±１９．０２ｍｍＨｇ，Ｐ＜０．０５），抑制左心室肥厚形成［ＬＶＷ／ＢＷ（ｍｇ／ｇ），２．６１±０．２０ｖｓ３．５９±０．３５，Ｐ＜０．０５］，ｃ－ｍｙｃｍＲＮＡ表达（随     

肺癌与非恶性疾病患者的肺组织c-fos、c-jun基因表达研究

探讨ｃ－ｆｏｓ、ｃ－ｊｕｎ癌基因与肺癌的关系。方法：采用ＰＴ－ＰＣＲ方法检测肺癌与非恶性肺疾病患者病变组织及正常肺组织中ｃ－ｆｏｓ、ｃ－ｊｕｎ ｍＲＮＡ表达。结果：ｃ－ｆｏｓ、ｃ－ｊｕｎ ｍＲＮＡ在两患者病变组织中的表达均明显高于正常组织（Ｐ〈０．００１）,在肺癌组织中的表达又高于肺良性肿块组织（Ｐ〈０．０５）。而且在小细胞肺癌和腺癌组织表达强于鳞癌组织（Ｐ〈０．００１）。结果：ｃ－ｆｏｓ、ｃ－ｊ     

大鼠应激时垂体c-fos和催乳素基因表达关系的研究

目的：探讨应激刺激下,垂体是否有ｃ－ｆｏｓ表达及其与催乳素（ＰＲＬ）基因表达的关系。方法：雌性Ｗｉｓｔａｔａｒ大鼠给予禁锢应激６０ｍｉｎ,用原位杂效方法检测应激开始后１５,３０,６０,１２０,１８０ｍｉｎ时ＲＰＬ ｍＲＮＡ水平。结果：基础状态下垂体前叶ｃ－ｆｏｓ有弱表达,在禁应激开始后１５￣３０ｍｉｎ迅速增加达高峰,尔后下降,在１２０￣１８０ｍｉｎ出现第２次表达高峰,ＰＲＬ ｍＲＮＡ水平的改变与ｃ     

NIH3T3细胞不同增殖时相c－fos和c－jun癌基因表达的动态分析

ＮＩＨ３Ｔ３细胞经血清刺激由静止期进入Ｇ１期，提取该期不同时相细胞的总体ＲＮＡ，并提取同步化于Ｇ１、Ｓ、Ｇ２和Ｍ期细胞的总体ＲＮＡ，分别与ｃ－ｆｏｓ（２．１ｋｂ）和ｃ－ｊｕｎ（１．８ｋｂ）基因探针进行斑点杂交。结果显示２个癌基因除了在血清刺激后１ｈ都出现ｍＲＮＡ聚集高峰外，ｃ－ｊｕｎ还在血清刺激后１６ｈ时出现第２个聚集峰，生长期细胞在细胞周期各时相均只有ｃ－ｆｏｓ基因的少量表达，而ｃ－ｊｕｎ在Ｓ期的表达量明显高于其他各期。说明ｃ－ｆｏｓ和ｃ－ｊｕｎ除了在细胞进入生长周期时发挥基因调控功能外，ｃ－ｊｕｎ还可能在晚Ｇ１／Ｓ期产生作用，这种作用不需ｃ－ｆｏｓ蛋白的参与。     

NIH3T3细胞不同增殖时相c－fos和c－jun癌基因表达的动态分析

ＮＩＨ３Ｔ３细胞经血清刺激由静止期进入Ｇ１期，提取该期不同时相细胞的总体ＲＮＡ，并提取同步化于Ｇ１、Ｓ、Ｇ２和Ｍ期细胞的总体ＲＮＡ，分别与ｃ－ｆｏｓ（２．１ｋｂ）和ｃ－ｊｕｎ（１．８ｋｂ）基因探针进行斑点杂交。结果显示２个癌基因除了在血清刺激后１ｈ都出现ｍＲＮＡ聚集高峰外，ｃ－ｊｕｎ还在血清刺激后１６ｈ时出现第２个聚集峰，生长期细胞在细胞周期各时相均只有ｃ－ｆｏｓ基因的少量表达，而ｃ－ｊｕｎ在Ｓ期的表达量明显高于其他各期。说明ｃ－ｆｏｓ和ｃ－ｊｕｎ除了在细胞进入生长周期时发挥基因调控功能外，ｃ－ｊｕｎ还可能在晚Ｇ１／Ｓ期产生作用，这种作用不需ｃ－ｆｏｓ蛋白的参与。     

电针和福尔马林诱发大鼠脑c—fos基因表达研究

目的：从分子水平探讨电针镇痛的机理。方法：采用ＲＮＡ斑点杂交技术比较电针与福尔马林刺激时大鼠脑内ｃ－ｆｏｓ ｍＲＮＡ表达的改变,并观察吗啡对ｃ－ｆｏｓ ｍＲＮＡ表达的影响。结果：电刺激具有明显的镇痛作用。电针和福尔马林刺激后均可诱发ｃ－ｆｏｓ ｍＲＮＡ表达增强。吗啡能明显抑制福尔马林诱导ｃ－ｆｏｓ ｍＲＮＡ表达,而对电针诱导的ｃ－ｆｏｓ ｍＲＮＡ表达则无明显影响。结论：ｃ－ｆｏｓ基因可能参与痛觉调     

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.