舟山眼镜蛇毒细胞毒素-Ⅻ的抗肿瘤作用

目的　了解舟山眼镜蛇毒细胞毒素 - (CTX- )的抗肿瘤作用。　方法　应用磺胺邻二甲氧嘧啶(SRB)法观察不同浓度 CTX- 对人肝癌 Bel74 0 4细胞和人早幼粒白血病 HL - 6 0细胞的生长抑制作用。观察CTX- 0 .4 ,0 .2 ,0 .1mg/ kg腹腔注射对 U 14荷瘤小鼠瘤块质量的影响并计算抑瘤率 ;CTX- 0 .4和 0 .2 m g/kg静脉注射对艾氏腹水癌 (EAC)小鼠腹水形成的影响并计算腹水减少率。　结果　 CTX- 可明显抑制人肝癌Bel74 0 4细胞和人早幼粒白血病 HL - 6 0细胞的生长 ,其 IC50 分别为 (1.12± 0 .13)和 (1.6 1± 0 .18)μg/ m L。 CTX- 0 .4 ,0 .2和 0 .1m g/ kg腹腔注射× 10 d,对宫颈癌 U14抑瘤率分别为 30 .5 0 % (P<0 .0 1) ,19.0 2 % (P<0 .0 5 )和12 .0 8% (P>0 .0 5 ) ;CTX- 0 .4和 0 .2 mg/ kg静脉注射× 3d对 EAC小鼠腹水形成减少率分别为 2 5 .5 % (P<0 .0 5 )和 14 .5 % (P>0 .0 5 )。　结论　舟山眼镜蛇毒细胞毒素 - 具有明显的抗肿瘤作用。     

舟山眼镜蛇毒细胞毒素-ⅩⅡ的抗肿瘤作用

目的了解舟山眼镜蛇毒细胞毒素-ⅩⅡ(CTX-ⅩⅡ)的抗肿瘤作用.方法应用磺胺邻二甲氧嘧啶(SRB)法观察不同浓度CTX-ⅩⅡ对人肝癌Bel7404细胞和人早幼粒白血病HL-60细胞的生长抑制作用.观察CTX-ⅩⅡ0.4,0.2,0.1 mg/kg腹腔注射对U14荷瘤小鼠瘤块质量的影响并计算抑瘤率;CTX-ⅩⅡ0.4和0.2 mg/kg静脉注射对艾氏腹水癌(EAC)小鼠腹水形成的影响并计算腹水减少率.结果CTX-ⅩⅡ可明显抑制人肝癌Bel7404细胞和人早幼粒白血病HL-60细胞的生长,其IC50分别为(1.12±0.13)和(1.61±0.18)μg/mL.CTX-ⅩⅡ0.4,0.2和0.1 mg/kg腹腔注射×10 d,对宫颈癌U14抑瘤率分别为30.50%(P＜0.01),19.02%(P＜0.05)和12.08%(P＞0.05)CTX-ⅩⅡ0.4和0.2 mg/kg静脉注射×3 d对EAC小鼠腹水形成减少率分别为25.5%(P＜0.05)和14.5%(P＞0.05).结论舟山眼镜蛇毒细胞毒素-ⅩⅡ具有明显的抗肿瘤作用.     

马勃多糖对荷瘤模型小鼠抑瘤作用及生命延长率的影响

目的:研究马勃多糖对荷瘤小鼠的抑瘤作用和生命延长率的影响。方法:采用真菌发酵法生产马勃菌丝,并提取马勃菌丝胞内多糖(CGP)。建立S-180肉瘤和抗艾氏腹水瘤(EAC)荷瘤小鼠动物模型,将所得马勃多糖进行抗S-180小鼠肉瘤和EAC的实验,观察马勃多糖抗肿瘤效果并分别计算抑瘤率和生命延长率。结果:高、中、低剂量马勃多糖对S-180荷瘤小鼠的抑瘤率分别为41.7%、36.2%、30.7%,对EAC荷瘤小鼠的生命延长率分别为38.9%、46.7%和26.4%,与阴性对照组比较有显著性差异(P0.05,P0.01)。结论:马勃多糖有一定的抑瘤作用,并能有效延长EAC荷瘤小鼠的生存期。     

复方芦荟抑制小鼠S180荷瘤的实验研究

目的 :探讨复方芦荟对小鼠S180 荷瘤的抑制作用及免疫学改变。方法 :2 5只小鼠随机分为 3组 ,将S180 瘤细胞接种于小鼠左前肢腋窝皮下 ,3d后各组小鼠分别灌胃服用复方芦荟液、环磷酰胺和生理盐水 ,8d后计算抑瘤率 ,测定小鼠免疫功能的改变。结果 :复方芦荟抑瘤率为 6 9% ;免疫功能测定T淋巴细胞增殖反应和NK细胞活性分别为 ( 0 .87± 0 .0 5)A和 ( 73.1 8± 5.58) % ;环磷酰胺组分别为 ( 0 .58± 0 .0 6 )A和 ( 44 .87± 5.2 9) % ;生理盐水组分别为 ( 0 .72± 0 .0 5)A和 ( 50 .0 3±6 .1 2 ) % ;两组与生理盐水组比较有显著性差异 (P <0 .0 1 )。结论 :复方芦荟具有抑制小鼠S180 荷瘤的作用 ,并能提高机体免疫功能     

白间素—2与环磷酰胺及5—氟脲嘧啶协同作用的研究

用白间素-2(IL-2)与环磷酰胺(Cy)及5-氟脲嘧啶(5-Fu)合并用药,对小鼠实验性肿瘤的研究表明,im IL-2与ip Cy合并用药对小鼠肉瘤37的肿瘤生长具有明显抑制作用,其抑瘤率达42.7%;单用ipIL-2或ip Cy对小鼠S_(37)的肿瘤生长无明显抑制作用。im IL-2与ip 5-Fu合并用药能明显延长艾氏腹水癌(EAC)小鼠的存活天数,两个剂量组的治愈率分别为44.0%和72.7%,5-Fu组为0和18.0%;单用im IL-2对EAC小鼠无明显延长作用(P<0.05)。给药组小鼠体重均有所增加。     

马钱子碱及其脂质体对移植性荷瘤小鼠抗肿瘤作用的对比研究

目的评价和比较马钱子碱及其脂质体对移植性肿瘤模型荷瘤小鼠的肿瘤抑制作用和生存时间的影响。方法用ICR小鼠接种S180、EAC腹水瘤、肝癌Heps瘤株造成相应的移植性荷瘤小鼠模型,考察马钱子碱及其脂质体对实体瘤模型(S180和Heps)小鼠的抑瘤率和对腹水瘤模型(EAC和Heps)小鼠生命延长率的作用以研究两者的抗肿瘤活性。结果马钱子碱及其脂质体能有效抑制实体瘤模型荷瘤小鼠体内肿瘤生长,1.61、3.23、6.46mg/(kg·d)马钱子碱对Heps小鼠的抑瘤率分别为35.05%、43.70%和46.09%,而1.61、3.23mg/(kg·d)马钱子碱脂质体的抑瘤率分别为45.41%和58.19%;1.61、3.23、6.46mg/(kg·d)马钱子碱对S180小鼠的抑瘤率分别为37.59%、36.13%和38.87%,而1.61和3.23mg/(kg·d)马钱子碱脂质体的抑瘤率分别为53.00%和48.37%,明显高于马钱子碱;但两者对腹水瘤模型(EAC和Heps)荷瘤小鼠的生存时间均无延长作用。结论马钱子碱及其脂质体有显著的抑制荷瘤小鼠肿瘤生长作用,马钱子碱脂质体抗肿瘤作用明显强于马钱子碱。     

金黄色葡萄球菌肠毒素A抑制小鼠膀胱癌的实验研究

目的 :研究超抗原 (SAg)对膀胱肿瘤的抑癌效应。 方法 :采用已建立T739小鼠皮下可移植性膀胱肿瘤模型 60只 ,随机分为SEA组 ,BCG组和生理盐水组。观察治疗后各组的肿瘤重量和存活时间。结果 :SEA组小鼠肿瘤重量 ( 0 65± 0 .18g)明显低于生理盐水组 ( 4 2 8± 0 .86g) (P <0 0 1) ,抑瘤率为 84 7% ;小鼠存活期 ( 2 3 1± 2 .4 7d)比对照组 ( 18 6± 1.50d)延长 (P <0 0 1) ,存活延长率为 2 4 1% ;与BCG组比较 ,抑瘤率与存活延长率均无明显差异 (P >0 0 5)。结论 :超抗原做为一种新型高效的抗肿瘤生物制剂对膀胱癌有明显的抑癌效应。     

眼镜蛇毒细胞毒素的体内外抗肿瘤活性及毒性比较

目的比较舟山眼镜蛇毒细胞毒素(CTX)Ⅹ～ⅩⅢ(CTXⅩ～ⅩⅢ)的毒性及抗肿瘤活性,筛选低毒高效的CTX。方法以Meier法测定CTX近似半数致死量(LD50);通过描记心电图测定引起大鼠100%死亡的最小剂量(MLD);以磺酰罗丹明B(SRB)法观察CTX对体外培养的Bel7404细胞和HL60细胞的杀伤作用;观察荷U14及艾氏腹水癌(EAC)小鼠腹腔注射(ip)CTXⅫ、ⅩⅢ的效果,测定肿瘤生长抑制率。结果CTXⅩ～ⅩⅢ对小鼠(iv)的近似LD50值分别为(1.16±0.12),(1.80±0.21),(0.75±0.21),(1.85±0.15)mg/kg;MLD为(183±18),(310±26),(224±16),(343±28)μg/kg(P<0.001)。CTX对Bel7404细胞作用24h的IC50分别为:(2.22±0.28),(2.97±0.10),(1.12±0.13),(2.46±0.28)μg/mL;对HL60细胞作用24h的IC50为:(1.97±0.06),(2.61±0.24),(1.61±0.18),(2.40±0.30)μg/mL(P<0.01)。CTXⅫ和ⅩⅢ(ip)对U14实体瘤和EAC腹水癌均有剂量依赖性抑制作用。结论4种CTX中,Ⅹ、Ⅻ毒性较强,Ⅺ次之,ⅩⅢ最弱。CTX对体外培养肿瘤细胞的细胞毒作用强弱顺序为:Ⅻ>Ⅹ>ⅩⅢ>Ⅺ。Ⅻ和ⅩⅢ对小鼠体内接种的U14及EAC的抑制作用是ⅩⅢ>Ⅻ。在4种CTX中,ⅩⅢ的抗肿瘤作用相对较强,毒性最低。     

复方鲨鱼软骨素组方药效学实验研究

目的 通过药效学的拆方比较,筛选复方鲨鱼软骨素配方的最佳组合.方法 采用动物移植型肿瘤S180和U14及EAC为实验模型进行抑瘤试验.对复鲨及其复鲨1、2、3、4号的不同组方进行抑瘤作用试验比较.结果 复鲨高、中、低[5.0、2.5、1.25 g/(kg·d)]3个剂量范围对S180和U14的抑瘤率分别达87.3%、75.2%、68.2%和33.9%、34.8%、30.7%;对接种EAC小鼠的生命延长率为26.2%、30.7%、29.8%.复鲨1、2、3、4号样品对S180的抑瘤率除复鲨1号达39.9%和37.4%外,其余均＜30%;对U14均无统计学意义;对EAC小鼠的生命延长率均不显著.结论 复鲨对S180具有显著的抗肿瘤作用;对U14有一定的抑瘤效果;能显著延长EAC小鼠生命率.拆方后的复鲨1号对S180有一定的抑瘤效果;而2、3、4号样品在同等剂量下的抑瘤作用不明显.     

参芪平消胶囊抑瘤作用的实验研究

目的:探讨参芪平消胶囊对S180肉瘤、Lewis肺癌荷瘤小鼠抑瘤作用及EAC荷瘤小鼠生存时间的影响.方法:建立S180、Lewis、EAC荷瘤小鼠动物模型,采用体内实验方法,于给药10 d后观察瘤重与生存时间,计算肿瘤抑制率、生命延长率.结果:参芪平消胶囊大、小剂量组对S180肉瘤、Lewis肺癌抑制率分别为37.76%、34.97%与42.18%、32.65%,与对照组相比差异非常显著(P＜0.01);该药能明显延长EAC腹水瘤小鼠生存时间,大、小剂量组生命延长率为62.30%、32.79%,与对照组相比P＜0.01,而不同剂量组之间存在量效关系.结论:参芪平消胶囊能抑制S180、Lewis实体瘤生长,延长EAC腹水瘤小鼠生存时间.     

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.