广西甜茶提取物体内抗肿瘤实验研究初探

目的探讨广西甜茶对小鼠肉瘤S180与肝癌H22移植性肿瘤的作用。方法广西甜茶以50%的乙醇提取制得提取物。分别考察提取物对小鼠肉瘤S180和小鼠肝癌H22移植瘤的作用。取肉瘤S180细胞/肝癌H22细胞分别接种于小鼠右前肢腋皮下,随机分为模型对照组、环磷酰胺(CTX)组及甜茶提取物低、中、高(1、3、9 g.kg-1.d-1)3个剂量组。CTX组按20 mg.kg-1.d-1腹腔注射给药,其余各组均灌胃给药,连续给药10 d后,剥离瘤体并称质量,计算抑瘤率,观察体质量、脾脏及胸腺的变化。结果甜茶提取物低、中、高剂量组均对小鼠肉瘤S180或肝癌H22移植瘤有不同程度的抑制作用,其中高剂量组对2种瘤体的抑制作用均显著(P<0.01),且对小鼠体质量、脾脏及胸腺质量均无明显影响。结论广西甜茶提取物对小鼠肉瘤S180与肝癌H22有较明显的体内抑制作用。     

三七粉对小鼠S180移植肿瘤的抑制作用及免疫功能的影响

目的:观察三七粉对小鼠S180移植肿瘤的抑制作用及免疫功能的影响,为寻找有效和低毒的抗肿瘤药物提供有价值的实验资料。方法:建立小鼠S180腹水瘤及实体瘤模型,分别设羧甲基纤维素钠(SCMC)组、环磷酰胺(CTX)组及三七粉低(3 mg/kg)、中(6 mg/kg)、高(12 mg/kg)剂量组。观察腹水瘤小鼠生存时间,计算生命延长率;测实体瘤小鼠瘤重、脾重及胸腺重,计算抑瘤率、脾指数及胸腺指数。各组比较并进行统计学分析。结果:与SCMC组比较,三七粉中、高剂量组及CTX组生存时间均延长(P<0.05~P<0.01),瘤体均缩小(P<0.05~P<0.01);与SCMC组及CTX组比较,三七粉中、高剂量组脾指数和胸腺指数均升高(P<0.05~P<0.01)。结论:三七粉对小鼠S180移植肿瘤具有抑制作用,并可增强荷瘤小鼠的免疫功能。     

白芍总苷对荷瘤小鼠化疗的增效减毒作用研究

目的: 探讨白芍总苷(total glucosides of paeony,TGP)对环磷酰胺(CTX)治疗荷瘤小鼠的增效减毒作用,为寻找有效低毒的抗肿瘤药物及提高肿瘤化疗中的生存率提供有价值的实验资料。方法: 建立鼠S180腹水瘤及实体瘤模型,分别给予生理盐水(NS组)、不同剂量的TGP (TGP组)、CTX (CTX组)及CTX+TGP (TGP+MTX组)处理,连续给药10 d,观察腹水瘤小鼠的生存时间,计算生命延长率;检测实体瘤组瘤重、脾重及胸腺重,计算抑瘤率、脾指数及胸腺指数,并对T-淋巴细胞转化率及血清肿瘤坏死因子(TNF-α)水平进行检测。结果: 与NS组比较,100 mg/kg和200 mg/kg TGP均可延长荷瘤小鼠的存活时间,差异有统计学意义(P < 0.01),且对S180移植肿瘤均有抑制作用,其抑瘤率分别为18%和30%。TGP组小鼠体重及脏器指数均高于NS组(P < 0.01)。TGP可增加T-淋巴细胞的转化率,升高血清TNF-α水平(P < 0.01)。结论: TGP对小鼠S180腹水瘤及实体瘤的生长具有一定的抑制作用,并可增加荷瘤小鼠的免疫功能,增强CTX的抗肿瘤作用,降低其对机体的毒性作用。     

眼镜蛇毒细胞毒素对S180荷瘤小鼠抗肿瘤作用的研究

目的:探讨眼镜蛇毒细胞毒素(Cytotoxin,CTX)对S180荷瘤小鼠的抗肿瘤作用。方法:采用昆明小鼠S180实体瘤模型,通过腹腔注射CTX,观察CTX对S180小鼠的肿瘤重量、亚显微结构、凋亡率和pro-caspase-3表达量的变化。结果:CTX对S180肿瘤细胞的生长表现出明显抑制作用。0.2、0.4、0.8mg/kgCTX剂量组的抑瘤率分别为23.8%、54.1%、63.2%;透射电子显微镜和流式细胞仪检测显示S180肿瘤细胞发生凋亡;免疫印迹结果显示pro-caspase-3蛋白表达降低,提示caspase-3被激活。结论:CTX通过诱导细胞凋亡来抑制S180肿瘤细胞的生长。     

桂苓散的抗癌作用

目的　探讨桂苓散的体内抗肿瘤活性及其与化疗药物的协同作用。　方法　用小鼠肝癌腹水型 H2 2 、艾氏腹水瘤 EAC模型 ,观察药物对小鼠腹水生成量的影响 ;用小鼠宫颈癌 U1 4模型 ,观察药物对小鼠瘤块生成的影响 ;同时观察药物与五氟脲嘧啶 (5 - FU )、环磷酰胺 (CTX)联合应用对抗肿瘤活性的协同作用。　结果　桂苓散对腹水瘤能抑制腹水的生成 ,对实体瘤也有抑制作用。与 5 - FU(2 5 mg· kg- 1· d- 1× 1,ig)合用能显著提高 5 - FU对腹水瘤小鼠的腹水生成的抑制作用。与轻度抑瘤作用剂量的 CTX(2 5 m g· kg- 1 · d- 1 × 1,ig)合用 ,对实体瘤抑瘤活性高于单独给药组。　结论　桂苓散具有一定的抗肿瘤作用并对 5 - FU、CTX的抗肿瘤活性有增强作用     

半枝莲对S180荷瘤小鼠抑瘤作用的实验研究

目的:探讨不同剂量半枝莲对S180荷瘤小鼠的押瘤作用.方法:观察不同剂量半枝莲对S180荷瘤小鼠肿瘤的抑瘤率、生命延长率、肝/体比、肺/体比、胸腺指数、脾脏指数以及用药前后的体重变化等指标的影响.结果:不同剂量半枝莲与对照组比较,具有显著性差异(P<0.05);半枝莲与CTX合用组与单用CTX组比较,有显著性差异(P<0.05).结论:半枝莲能有效地抑制S180肿瘤生长,并能显著加强化疗药CTX的抑瘤效果.     

桑黄胞外多糖抗肿瘤活性研究

目的研究桑黄胞外多糖对小鼠S180实体瘤、腹水瘤的生长抑制作用。方法将昆明种小鼠接种S180实体瘤或腹水瘤后随机分组,灌胃给予不同剂量100、200、400mg/(kg·d)的桑黄胞外多糖,以灌胃生理盐水和环磷酰胺为空白对照组和阳性对照组。检测受试药物对小鼠S180实体瘤生长的抑制作用以及对荷瘤小鼠脾脏指数和胸腺指数的影响,计算腹水型荷瘤小鼠的存活时间。结果桑黄胞外多糖显著增加荷瘤小鼠的脾脏指数和胸腺指数;3个剂量的桑黄胞外多糖对S180实体瘤的抑瘤率分别为31.25%、36.86%、44.38%;并且可以降低S180腹水瘤细胞的分裂指数,延长腹水型荷瘤小鼠的存活时间。结论桑黄胞外多糖具有较强的抗肿瘤作用。     

THE ANTITUMOR ROLE OF PINUS MASSONIANA BARK EXTRACT

目的:探讨马尾松树皮提取物(Pinus massoniana bark extract,PMBE)对S180腹水瘤小鼠的抗肿瘤作用.方法:采用NIH小鼠S180腹水瘤模型,通过腹腔注射PMBE,观察PMBE对S180腹水瘤小鼠的体重增长、腹水瘤体积、抑瘤率、胸腺和脾脏的脏器系数、外周血白细胞数量、T淋巴细胞增殖率、凋亡率和细胞周期的变化.结果:PMBE对S180腹水瘤细胞表现出明显抑制作用.50,100,200 mg/kgPMBE剂量组的抑瘤率分别为9.95%、65.74%、88.04%;小鼠的体重增长相应下降;PMBE高剂量组能明显提高胸腺指数、脾脏指数、外周血白细胞数量和T淋巴细胞增殖率.PMBE中剂量组能明显诱导S180细胞凋亡,且细胞周期分析显示PMBE使S180细胞阻滞在S期.结论:PMBE通过增强免疫功能和诱导细胞凋亡来抑制S180腹水瘤生长.     

吲哚新碱抑制S180肉瘤细胞小鼠移植瘤生长的研究

目的研究吲哚新碱(new indole alkali,NIA)对S180肉瘤细胞小鼠皮下移植瘤的抑制作用及其机制。方法建立S180肉瘤细胞小鼠皮下移植瘤动物模型,随机分为空白对照组(溶剂灌胃组)、阳性对照组(CTX,50mg.kg-1.d-1)及NIA低剂量组、中剂量组、高剂量组。观察小鼠体质量变化并计算抑瘤率;观察肿瘤组织病理学变化;用免疫组化法检测移植瘤组织中Bax及Survivin蛋白表达,并用TUNEL法检测细胞凋亡。结果与空白对照组比较,CTX组及NIA低、中、高剂量组肿瘤生长均比较缓慢,瘤质量差异有统计学意义(P均<0.05),抑瘤率分别为53.48%、19.67%、23.45%、37.06%;与CTX组比较,NIA低、中、高剂量组瘤质量较大,差异均有统计学意义(P均<0.05)。病理组织学检查,NIA组标本可见细胞凋亡形态变化。与空白对照组比较,CTX组及NIA高、中剂量组Bax蛋白表达及凋亡指数增高,CTX组及NIA高剂量组Survivin蛋白表达下调,差异均有统计学意义(P均<0.05)。与CTX组比较,NIA高、中、低剂量组Bax蛋白表达及凋亡指数降低(P均<0.05),NIA低、中剂量组...     

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。     

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.