重组人肿瘤坏死因子诱导HL—60白血病细胞分化及调控原癌基因表…

采用２０￣２００Ｕ／ｍｌ的重组人肿瘤坏死因子（ｒｈＴＮＦ－α）处理体外液相培养的人早幼粒白血病细胞株ＨＬ－６０，观察到５０￣２００Ｕ／ｍｌ的小剂量ＴＮＦ具有诱导其向单核－巨噬细胞途径分化及抑制其增殖的效应。采用细胞总ＲＮＡ打点杂交技术检测１￣１００ＵｍｌＴＮＦ诱导ＨＬ－６０细胞早期（１２小时内）对其ｃ－ｍｙｃ，ｃ－ｆｏｓ原癌基因表达的影响，发现ＴＮＦ可抑制ｃ－ｍｙｃ ｍＲＮＡ水平及ｃ－ｆｏｓ短暂性     

重组人肿瘤坏死因子诱导HL－60白血病细胞分化及调控原癌基因表达的作用

重组人肿瘤坏死因子诱导ＨＬ－６０白血病细胞分化及调控原癌基因表达的作用｜｜［袁跃传，沈素芸．中华医学杂志，１９９４；７４（１１）：６６６～６６９］作者采用２０～２００Ｕ／ｍｌ的重组人肿瘤坏死因子（ｒｈＴＮＦ－α）处理体外液相培养的人早幼粒白血病细胞株...     

鬼臼叉甙诱导HL－60细胞分化时c－myc蛋白的表达

目的：观察小剂量鬼臼叉甙对ＨＬ－６０细胞的诱导分化作用和对ｃ－ｍｙｃ蛋白表达的影响。方法：应用加入鬼臼叉甙（ＶＰ－１６）和维甲酸（ＲＡ）的含２０％小牛血清的培养基培养人类早幼粒细胞株（ＨＬ－６０），分别在培养后１、２、４、６ｄ测定细胞各时相的ｃ－ｍｙｃ蛋白水平。结合细胞形态、细胞化学和氯化硝基四氮唑蓝（ＮＢＴ）还原试验，观察ＶＰ－１６、ＲＡ对ＨＬ－６０细胞的诱导分化作用及其与ｃ－ｍｙｃ蛋白表达的关系。结果：与ＲＡ一样，小剂量ＶＰ－１６能诱导ＨＬ－６０细胞向粒系分化。并且在ＨＬ－６０细胞分化过程中ｃ－ｍｙｃ蛋白水平明显降低。ＶＰ－１６处理的ＨＬ－６０细胞其ｃ－ｍｙｃ蛋白降低与其诱导分化作用呈负相关。结论：实验结果提示，ｃ－ｍｙｃ原癌基因表达的变化可能是ＶＰ－１６诱导ＨＬ－６０细胞分化的机制之一。     

SD鼠未成熟心肌细胞缺氧/复氧期c-fos,c-myc mRNA的表达

目的 研究未成熟细胞缺氧／复氧期间ｃ－ｆｏｓ,ｃ－ｍｙｃ的表达。方法 建立Ｓ大鼠未成熟心肌细胞原代培养及缺氧／复氧模型应用原位分子杂交技术,观察ｃ－ｆｏｓ,ｃ－ｍｙｃ在心肌细胞核内的表达。结果 未成熟心肌细胞在缺氧前ｃ－ｆｏｓ,ｃ－ｍｙｃ,ｍＲＮＡ无表达,对照（１）组和（２组）ｃ－ｆｏｓ,ｃ－ｍｙｃ ｍＲＮＡ在缺氧１２０ｍｉｎ开始表达,复氧６０ｍｉｎ表达程度进一步升高。牛磺酸保护组（Ⅲ）组在缺氧１     

重组人肿瘤坏死因子对白血病细胞生长抑制的研究

应用ＭＴＴ比色法研究了重组人肿瘤坏死因子（ｒｈＴＮＦα）对白血病细胞株ＨＬ６０和Ｋ５６２生长的抑制作用。实验结果表明，ｒｈＴＮＦα对白血病细胞生长的抑制作用有时相和剂量依赖关系。ｒｈＴＮＦα与ＨＬ６０和Ｋ５６２细胞分别培养１２ｈ，抑制率仅有６．２％和４．３％。当作用时间延长到２４ｈ时，抑制度分别达到５５．４％和４７．１％。ｒｈＴＮＦα的用量由０．０４μｇ／２×１０５细胞增加到５μｇ／２×１０５细胞时，对ＨＬ６０和Ｋ５６２细胞的生长抑制率也分别由１６．８％和６．４％增长到７７．１％和５９．３％。上述两种依赖关系的实验数据经单因素方差处理，有显著性差异。ｒｈＴＮＰα同抗肿瘤药Ｖｐ１６合用对白血病细胞生长的抑制有叠加作用。ｒｈＴＮＦα加入急性粒细胞白血病患者骨髓细胞培养体系后，对白血病细胞集落形成单位（ＣＦＵ－Ｌ）的生长有一定抑制作用。当ｒｈＴＮＦα为１μｇ／５×１０５白血病细胞时，对ＣＦＵ－Ｌ的抑制率可达４３．４％。     

反义寡核苷酸对HL60细胞c—myc基因表达的抑制和诱导分化作用

研究ｃ－ｍｙｃ反义寡核苷酸对ＨＬ６０细胞中ｃ－ｍｙｃ基因的表达及ＨＬ６０细胞分化的影响。方法 采用针对原癌基因ｃ－ｍｙｃ的ｍＲＮＡ５’非翻译区的一个１８ｂｐ的反义寡核苷酸５‘ｄ（ＣＴＴ ＣＴＣ ＧＡＧ ＧＣＡ ＧＧＡ ＧＧＧ）３「与人早幼粒白血病细胞系ＨＬ６０细胞共培养５ｄ，检测ｃ－ｍｙｃ ｍＲＮＡ量的变化及其对ＨＬ６０细胞分化的影响。     

促癌剂对基因表达的影响

用狭缝印迹杂交方法在体内、外模型中观察促癌剂对基因表达的影响。结果表明，促癌剂ＴＰＡ可诱导小鼠成纤维细胞ＢＡＬＢ／３Ｔ３及大鼠肝脏中ｃ－ｆｏｓ、ｃ－ｍｙｃ的表达，降低ＢＡＬＢ／３Ｔ３的ＲｂＲＮＡ水平及大鼠肝脏中α１－Ｉ３ＲＮＡ水平。苯巴比妥对大鼠肝脏的长期促癌作用表明，ｃ－ｆｏｓ、ｃ－ｍｙｃ表达有改变，α１－Ｉ３ｍＲＮＡ水平下降。苯巴比妥的短期作用对大鼠肝脏ｃ－ｆｏｓ、ｃ－ｍｙｃ的表达改变不明显，     

鬼臼叉甙诱导HL—60细胞分化时c—myc蛋白的表达

目的：观察小剂量鬼臼叉甙对ＨＬ－６０细胞的诱导分化作用和对ｃ－ｍｙｃ蛋白表达的影响。方法：应用加入鬼臼叉甙（ＶＰ－１６）和维甲酸（ＲＡ）的含２０％小牛血清的培养基培养人类早幼粒细胞株（ＨＬ－６０），分别在培养后１、２、４、６ｄ测定细胞各时相的ｃ－ｍｙｃ蛋白水平。结合细胞形态、细胞化学和氯化硝基四氮唑蓝（ＮＢＴ）还原试验，观察ＶＰ－１６、ＲＡ对ＨＬ－６０细胞的诱导分化作用及其与ｃ－ｍｙｃ蛋白表达的关     

反义核酸对人白血病HL—60细胞中c—myc基因表达的抑制

研究两个反义核酸（１８ｍｅｒ，２１ｍｅｒ）对人白血病ＨＬ－６０细胞中ｃ－ｍｙｃ基因表达的抑制作用。用ＨＬ－６０活细胞计数，ＲＮＡ含量的ＲＴ－ＰＣＲ测定和ｃ－ｍｙｃ基因蛋白的免疫组化染色检查，结果：两个反义核苷酸都以抑制ＨＬ－６０细胞的增殖，增殖抑制率为１１－７５％。反义核酸还抑制ｃ－ｍｙｃＲＮＡ和Ｍｙｃ蛋白的表达，而对ｃ－ｍｙｃ基因正常表达的红白血病细胞Ｋ５６２的增殖和ＰＨＡ刺激的人淋巴细胞的增殖     

8—Br—cAMP对人白血病HL—60细胞生长,分化及有关基因表达的影响

观察８－Ｂｒ－ｃＡＭＰ对ＨＬ－６０细胞生长，分化及其相关基因的调节。方法组化化学、原位杂交和完整细胞ＲＮＡ斑点印迹结果８－Ｂｒ－ｃＡＭＰ作用２４ｈ，ＨＬ－６０细胞ｃ－ｆｏｓ癌基因和ｐ＾２１ｗａｆｌ抑癌基因表达明显升高，ｃ－ｍｙｃ癌基因表达明显降低；８－Ｂｒ－ｃＡＭＰ作用４８ｈ，ＨＬ－６０细胞生长、增殖明显受抑制，并向中性粒细胞方向分化。结论８－Ｂ可调整ＨＬ－６０细胞生长，分化及相关癌基因和抑癌基因     

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.     

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.     

Scientific principles and rigorous processes should be followed in developing clinical guidelines for therapeutic interventions of integrative medicine

A clinical guideline for the therapeutic interventions of integrative medicine may be defined as a written document which states a series of recommendations on therapeutic interventions of integrative medicine for a special disease or condition. The guideline may provide assistance to medical professionals in making clinical decisions aimed at improving the clinical outcome of patients and reducing the costs of medical care（~＇4~. Recommendations issued by a guideline should be based on the best available evidence in both Western and Chinese medicine. For fulfilling this purpose, the development of clinical guidelines for therapeutic interventions in the field of integrative medicine should follow scientific principles and undergo a rigorous processes.