神经生长因子对脊髓损伤后脊髓组织c—fos蛋白表达的影响

为探讨神经生长因子（ＮＧＦ）对脊髓损伤后脊髓组织ｃ－ｆｏｓ基因的影响。Ｗｉｓｔａｒ大鼠分成三组：正常对照组、生理盐水组、ＮＧＦ组；用ＡｌｌｅｎＷＤ法以１０ｇ×２．５致伤力损伤Ｔ８脊髓。ＮＧＦ组经蛛网膜下腔导管分别于术后即刻、１０、３０分、１、２、３、４小时注入ＮＧＦ溶液２０μｌ，生理盐水组经导管于同时间内注入等量的生理盐水。用免疫组化法检测ｃ－ｆｏｓ蛋白在脊髓组织中的表达。结果示生理盐水组在术后１     

神经生长因子对脊髓神经元损伤后c—fosmRNA表达的影响

探讨神经生长因子（ＮＧＦ）对脊髓神经元保护作用的机制。采用Ａｌｅｎ′ｓ法制成大鼠Ｔ８脊髓损伤模型,用原位杂交方法检测神经元ｃ－ｆｏｓｍＲＮＡ的表达。结果：脊髓损伤后神经元ｃ－ｆｏｓｍＲＮＡ表达较正常对照未损伤神经元显著增加,表达高峰出现在损伤后１ｈ;神经生长因子能显著抑制损伤后神经元ｃ－ｆｏｓｍＲＮＡ的异常表达。结论：神经生长因子对损伤后神经元保护作用机制,可能是其抑制了ｃ－ｆｏｓ基因异常表达,保护了神经元     

经皮冠脉腔内血管成形术后残留狭窄动物模型的建立及c—fo…

以兔颈总动脉内皮剥脱术后加行动脉缩窄术模拟经皮冠状脉腔内血管成形术后残留狭窄，实验结果显示：动脉球囊损伤后可以引起平滑肌细胞增生及管径变小，缩窄可以加重这一病理变化。缩窄还可以增加动脉损伤后缩窄远心端动脉平滑肌细胞ｃ－ｆｏｓ基因的快速表达。术后３０ｍｉｎ内皮剥脱加缩窄组ｃ－ｆｏｓｍＲＮＡ为单纯内皮剥组的１２倍（Ｐ〈０．０１），显示残留狭窄可能通过激活ｃ－ｆｏｓ基因表达而引志平滑肌细胞增生，促进ＰＴ     

液压冲击脑损伤对大鼠c—fos mRNA表达的影响

为研究大刀中度侧位液压冲击脑损伤对ｃ－ｆｏｓ ｍＲＮＡ表达的影响，将雄性ＳＤ大鼠，随机分为正常对照组、手术对照组和损伤组。损伤组动物均给０．２ＭＰａ液压冲击造成脑损伤，按冲击后处死时间不再分为５分钟、１５分钟、３０分钟、１小时、２小时组。应用ＲＴ－ＰＣＲ方法半定量观察ｃ－ｆｏｓ在大脑皮层和脑干的表达。结果显示，对照组顶叶皮层和脑干均有低水平ｃ－ｆｏｓ ｍＲＮＡ表达，冲击后５分钟，表达逐渐增强，冲击     

头风饮对实验性偏头痛动物模型c-fos、c-jun基因表达的影响

头风饮是中医治疗偏头痛的经典方剂。根据硝酸甘油、偏头痛、早快基因表达的内在联系,本研究在国内首次复制了硝酸甘油型实验性偏头痛动物模型,并用免疫组化方法观察早快基因ｃ－ｆｏｓ、ｃ－ｊｕｎ的表达。结果：硝酸甘油型实验性偏头痛大鼠脑干、下丘脑ｃ－ｆｏｓ、ｃ－ｊｕｎ基因表达明显增强;头风饮能显著抑制偏头痛大鼠脑干、下丘脑增强的ｃ－ｆｏｓ、ｃ－ｊｕｎ基因表达,与模型组比较有显著性或极显著性差异,与空白对照组     

川芎嗪与甲基强的松龙对大鼠脊髓损伤后神经功能恢复的研究(摘要)

选用健康成年ＳＤ大鼠４０只,Ａｌｅｎ’ｓ法制作大鼠脊髓损伤（ｓｐｉｎａｌｃｏｒｄｉｎｊｕｒｙ,ＳＣＩ）模型后随机分成３组：损伤组（对照组）、川芎嗪（ｔｅｔｒａｍｅｔｈｙｌｐｙｒａｚｉｎｅ,ＴＭＰ）治疗组、甲基强的松龙（ｍｅｔｈｙｌｐｒｅｄｎｉｓｏｌｏ...     

亚低湿治疗家兔脑外伤后c—fos蛋白变化的实验研究

目的 研究脑外伤后ｃ－ｆｏｓ基因表达及全身亚低温治疗脑外伤后ｃ－ｆｏｓ基因表达的变化。方法：将成年雄性家兔利用颅脑外伤自由落体打击器造成一侧脑外伤动物模型,伤后动物被分为常组及亚低温组,常温组家兔体温维持在３７．０～３７．５℃,亚低温组 外伤后１０ｍｉｎ立即行亚低温治疗１５０ｍｉｎ（温度控制在３１．５～３２．５℃）,６ｈ后省死各组家兔,采用免疫组化方法及计算机图分析检测伤灶及周围脑组织ｃ－ｆｏｓ蛋     

谷氨酸受体在大鼠c—fos基因的表达及其与癫痫易感性的关系

为探讨Ｎ－甲基－Ｄ－天冬氨酸（ＮＭＤＡ）受体在ｃ－ｆｏｓ基因表达及其与癫痫易感性的关系，我们以Ｎｏｒｔｈｅｒｎ印迹杂交法测定结果显示：（１）外源性ＮＭＤＡ可诱导脑细胞ｃ－ｆｏｓ基因的ｍＲＮＡ表达；竞争性或非常竞争性ＮＭＤＡ受体拮抗剂可完全阻断ｃ－ｆｏｓ基因ｍＲＮＡ表达。（２）ＮＭＤＡ诱导脑内ｃ－ｆｏｓ的ｍＲＮＡ表达随神经元发育呈上升趋势，于体外培养２４天达高峰。（３）在发育中，听源性癫痫易感大鼠脑     

白藜芦醇对脊髓损伤大鼠神经细胞凋亡的抑制作用

目的:研究脊髓损伤后管饲白藜芦醇对大鼠脊髓神经细胞凋亡的影响。方法:将96只Sprague-Dawley雄性大鼠随机分成4组,假手术组、损伤组、甲基强的松龙组、白藜芦醇组,根据Allen法造模,术后即刻按100mg/kg管饲白藜芦醇或甲基强的松龙;TUNEL法检测脊髓损伤后8h,1d,3d及7d凋亡细胞数变化,并与甲基强的松龙组对比。结果:脊髓损伤后,白藜芦醇组与损伤组细胞凋亡情况相比具有显著性差异(P<0.01),而白藜芦醇组与甲基强的松龙组间相比无显著性差异(P>0.05),但前者要略优于后者(损伤后1d,P<0.05),这显示白藜芦醇与甲基强的松龙作用相似。结论:白藜芦醇经过管饲后能明显抑制神经细胞的凋亡,发挥了神经细胞保护作用,这与腹腔注射途径一致。     

防己黄芪汤加味治疗大鼠脊髓半横断损伤

目的：研究中药复方对急性脊髓半切损伤的治疗疗效及对脊髓组织病理改变及星型胶质细胞的影响,并探讨其作用机制。方法：65只大鼠随机取5只作为空白组,余60只大鼠脊髓损伤造模后随机分为损伤、中药和甲基强的松龙三组,各20只。损伤组造模后不用药,中药组造模后予中药治疗,甲基强的松龙组造模后予甲基强的松龙治疗。于术后24小时、1、2、3、4周观察三组大鼠脊髓运动功能恢复、光密度测定及脊髓组织学改变。结果：中药组及甲基强的松龙组脊髓运动功能及光密度评分与损伤组相比有统计学意义（P〈0.01）;中药组病变与损伤组相比,病损缩小、空泡面积减少。中药组与甲基强的松龙组后期脊髓运动功能评分无统计学差异（P〉0.05）。结论：中药组在改善脊髓微环境、保护神经组织免受损害、促进间质细胞生长上发挥其有益作用,抑制胶质细胞的过度增生,从功能和形态学上证实了中药治疗的有效性。     

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.