绞股蓝对环磷酰胺诱发小鼠骨髓细胞突变的抑制作用

目的观察干品绞股蓝对环磷酰胺（Ｃｙｃｌｏｐｈｏｓｐｈａｍｉｄｅ,以下简称ＣＰ）诱发小鼠骨髓嗜多染红细胞（ＰＣＥ）微核和染色体畸变的抑制作用．方法小鼠骨髓细胞微核试验方法和小鼠骨髓细胞染色体畸度试验方法．结果含１０％绞股蓝的饲料使环磷酰胺诱发的微核率从３３．１７±３．５４‰降至１２．００±２．１９‰（Ｐ＜０．００１）,染色体畸变率从２６．３３±３．５０％降至１４．６７±２．２５％（Ｐ＜０．０１）．结论绞股蓝可抑制环磷酰胺诱发的ＤＮＡ损伤,提示绞股蓝具有一定的抗诱变作用．     

硫芥诱导小鼠染色体畸变和微核形成作用的研究

目的　研究硫芥对中国仓鼠肺成纤维细胞 (chinesehamsterfibroblastcellline ,CHL)染色体的诱变作用及对小鼠骨髓微核率的影响。方法　培养CHL细胞 (±S9) ,以不同浓度硫芥处理 2 4h后常规方法制备染色体 ,观察畸变类型并计算畸变率。KM小白鼠皮下注射硫芥染毒 ,2 4h后处死动物 ,取双侧股骨 ,行骨髓涂片和姬姆萨染色 ,计数含微核嗜多染红细胞(polychromaticerythrocyte ,PCE)数。结果　硫芥处理的CHL细胞染色体畸变率显著增加 ,出现裂隙、断裂、缺失、多倍体等多种类型畸变 ,并呈量效依赖趋势。S9不影响硫芥诱导的CHL细胞染色体畸变形式和畸变率。与对照组比较 ,注射硫芥小鼠骨髓PCE微核率显著增加 (P <0 .0 1) ,硫芥剂量越大 ,微核形成率越高。结论　硫芥能直接诱发细胞染色体损伤。     

胸腺肽降低环磷酰胺诱导的小鼠骨髓嗜多染红细胞微核率的初步研究

目的　探讨胸腺肽对遗传损伤的作用。方法　以每天 2 5 0mg kg(高剂量组 )、12 5mg kg(低剂量组 )的胸腺肽连续 10d小鼠腹腔注射给药 ,实验另设以生理盐水 10ml kg代替胸腺肽的阴性对照组 ;于第 9、10两天以 40mg kg剂量腹腔注射染色体断裂剂环磷酰胺 ,环磷酰胺末次注射后 6h处死小鼠 ,检测小鼠骨髓嗜多染红细胞微核率。结果　胸腺肽能显著降低环磷酰胺诱导的微核率 ,与阴性对照组相比P均小于 0 0 1,高低两个胸腺肽剂量组及阴性对照组的微核率分别为 (12 5 0± 3 88)‰、(14 75± 3 42 )‰ ,(2 2 5 8± 4 98)‰。结论　胸腺肽具有拮抗或修复环磷酰胺诱导的遗传损伤作用。     

芦荟多糖抗突变作用的试验研究

目的　研究芦荟多糖的抗突变作用。方法　采用小鼠骨髓细胞微核试验、人外周血淋巴细胞染色体畸变试验及小鼠精子畸形试验 ,观察芦荟多糖在体内和体外的抗突变作用。结果　芦荟多糖高、中、低三个剂量组的微核率 (分别为 17.6‰、2 1.8‰、31.4‰ )和精子畸形率 (分别为 30 .42‰、32 .15‰、41.33‰ )均显著低于阳性对照组 (环磷酰胺组 ,P<0 .0 0 5 )。体外淋巴细胞染色体的畸变率在高、中、低三个剂量组分别为 2 2 .5 %、14.8%、10 .2 5 %,与阳性对照组 (丝裂霉素组 )相比差异有显著性 (P<0 .0 1) ,但在低剂量组其作用最为明显 ,抑制率达到78.5 %。结论　芦荟多糖可有效抑制环磷酰胺、丝裂霉素所诱导的突变性 ,具有一定的抗突变作用。     

山萸肉水提液对小鼠骨髓嗜多染红细胞、睾丸染色体和精子的致突变性

目的 :探讨山萸肉水提液对小鼠骨髓嗜多染红细胞、睾丸染色体和精子的致突变性。方法 :采用小鼠骨髓嗜多染红细胞 (PCE)微核法、小鼠睾丸染色体畸变试验和小鼠精子畸形试验 ,观察不同剂量山萸肉水提液 (10g/kg,5g/kg ,2 .5g/kg)和阴性对照 (蒸馏水 )、阳性对照 (环磷酰胺 )作用后 ,小鼠染色体畸变率、精子畸形率及PCE微核率。结果 :山萸肉水提物的各个剂量组小鼠睾丸染色体畸变率、小鼠精子畸形率及骨髓细胞微核率 ,与阴性对照组相比 ,差异均无统计学意义 ;但与阳性对照组相比 ,差异均有统计学意义 (P <0 .0 1)。结论 :山萸肉水提液对小鼠均没有染色体与细胞水平上的损伤作用 ,不能引起小鼠骨髓细胞微核率的升高。     

口腔颌面部肿瘤患者的外周血淋巴细胞微核观察

本文采用微量血培养法测定了20例口腔颌面肿瘤患者外周血淋巴细胞微核,检出率为100％;微核率为10.1±4.15‰,与对照组比较差异有高度显著性(P<0.01)。20例患者中有9例恶性肿瘤,11例良性肿瘤,前者微核率为11.3±5.72‰,后者为9.09±2.02‰,两者比较差异有显著性(P<0.05)。提示颌面肿瘤的发生与染色体畸变可能存在密切关系。     

鹿茸醇提物对环磷酰胺所致小鼠遗传物质损伤的影响

用鹿茸醇提物对昆明系小鼠进行灌胃 ,剂量为 1 0g/ (kg·d) ,连续进行 10d ;然后 ,测定由环磷酰胺诱导的该小鼠骨髓嗜多染红细胞微核率 ;以探讨鹿茸醇提物对环磷酰胺所致小鼠遗传物质损伤是否具有保护作用。结果表明 ,鹿茸醇提物组(实验组 )小鼠骨髓嗜多染红细胞的微核率为 15 82± 0 2 2 ,而对照组为 2 4 2 3± 0 18,两组比较 ,差异非常显著 (P <0 0 1)。提示 ,鹿茸醇提物对环磷酰胺所致小鼠遗传物质损伤具有一定的保护作用     

子宫内膜癌染色体不稳定性研究

目的探讨子宫内膜癌染色体不稳定性。方法取21例子宫内膜癌患者外周血淋巴细胞体外常规培养、制片、GTG显带分析染色体畸变(CAR),Brdu法分化染色分析姊妹染色单体交换(SCE)、微核(MN)、核仁组织形成区(NOR)。结果内膜癌组(21例)染色体结构畸变以出现次数的多少排列为:1、3、2、5、7、8号,染色体数目、结构畸变率分别为12.86%6、.1%,SCE频率、MN率、Ag-NOR分别为7.4±1.5次/细胞(、6.6±1.9)‰、7.1±1.6个/细胞,对照组(10例)染色体数目、结构畸变率分别为3.4%、0.4%,SCE频率、MN率、Ag-NOR分别为4.8±0.6次/细胞(、2.0±0.9)‰、4.9±1.1个/细胞,内膜癌组均明显高于对照组(P<0.01)。结论子宫内膜癌病人外周血淋巴细胞染色体数目和结构畸变率增高。     

小鼠外周血正染红细胞微核的初步研究

外周血正染红细胞微核检查是发现体内染色体损伤一快速方法。本文以不同剂量的环磷酰胺(5、10、15、20、25、30mg/kg)用腹腔注射染毒断奶雄性小鼠。连续5天染毒(从星期一到星期五)。对照组注别蒸馏水。实验结果是:骨髓多染红细胞微核率分别为6.88±0.89,12.33±0.37、20.00±0.49、24.89±0.52、24.75±0.55(‰),对照组为3.00±0.64;外周血正染红细胞微核率是5.25±0.26、5.06±0.24、6.31±0.28、6.06±0.26、8.44±0.32、7.06±0.28,对照组为1.79±0.16(‰)。与对照组比较均有十分显著的升高。有明显的剂量反应关系。外周血正染红细胞微核率只5天染毒以后就达最大稳定状态,以后两周没有变化。骨髓和外周血微核率相关分析,相关系数分别是γ_1=0.99,γ_2=0.86,相关系数有显著意义(P<0.01),外周血正染红细胞微核率是用于发现暴露人群染色体损伤一有效指标。     

健康人群自发微核率和HBV感染的调查

本文调查了启东地区124例健康人外周血淋巴细胞微核率,结果表明:自发微核率为0.76±0.07‰,HBsAg 阳性率为23.40%;其中 HBsAg 阳性组微核率、微核人员出现率显著高于阴性组(P<0.05或<0.01)。提示 HBV 感染者体细胞染色体畸变、自发微核率明显上升,对人类遗传存在着致突变、致癌的潜在危险。     

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.     

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.     

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.