SREPS对肝癌H22荷瘤小鼠的抑瘤作用

目的研究硫酸酯化细菌胞外多糖SREPS对肝癌H22荷瘤小鼠的抑瘤作用。方法70只肝癌H22荷瘤小鼠随机分为7组：模型组、SREPS不同剂量组（0．5,1,2．5,5,10ms／kg）和环磷酰胺组,腹腔注射,1次／d,连续10d。于造模第11天观察抑瘤率、胸腺指数和脾指数。结果SREPS不同剂量组（0．5,1,2．5,5,10mg／kg）的抑瘤率分别为21．60％、23。50％,34．90％,26．50％和28．92％。与模型组比较,除0．5mg／kg外,其余各浓度的瘤质量显著降低（P〈0．05）;SREPS不同剂量组可增加荷瘤小鼠的胸腺指数和脾指数,其中2．5mg／kg剂量组对荷瘤小鼠胸腺指数和脾指数均显著增加（P〈0．05）。结论SREPS对肝癌H22荷瘤小鼠有一定的抑瘤作用,SRESP在抑制肿瘤的同时可提高荷瘤小鼠的免疫功能。     

龙葵正丁醇提取物对Lewis肺癌移植瘤生长的影响

目的:观察龙葵正丁醇提取物对Lewis肺癌移植瘤生长的抑制作用。方法:建立Lewis肺癌模型,将40只C57BL/6J荷瘤小鼠随机分成荷瘤空白对照组、环磷酰胺组、龙葵正丁醇提取物高、中、低剂量组5组,每组8只。给药15 d后处死小鼠,剥离肿瘤组织,称重,计算肿瘤生长抑制率;解剖其胸腺、脾脏组织,称重,计算胸腺和脾脏指数。结果:龙葵正丁醇提取物高、中、低剂量对Lewis肺癌移植瘤的抑瘤率分别为32.14%、13.93%和15.36%。龙葵正丁醇提取物高剂量组胸腺指数增长率为134.31%,龙葵正丁醇提取物中剂量组脾指数增长率为128.73%。结论:龙葵正丁醇提取物对Lewis肺癌移植瘤生长具有一定程度的抑制作用,并能提高荷瘤小鼠胸腺和脾脏指数。     

肺岩宁膏方对Lewis肺癌荷瘤鼠抗瘤作用及对免疫器官的影响

目的探讨肺岩宁方为基础的膏方制剂对荷瘤鼠抗肿瘤活性及免疫功能的影响。方法以C57BL/6小鼠Lewis肺癌为模型,随机分为膏方组、辅料方组、生理盐水组,每组11只,给药10d后检测各组C57BL/6荷瘤小鼠的体质量,瘤重,肺转移灶数,肺转移发生率,脾指数及胸腺指数。结果肺岩宁膏方能明显减少C57BL/6Lewis肺癌荷瘤小鼠的肺转移灶数,降低肺转移的发生率(P<0.05);显著提高荷瘤小鼠的免疫功能,使小鼠的体质量、脾指数、胸腺指数均明显高于空白组(P<0.05);但三组间瘤重无明显差异。结论肺岩宁膏方能够明显提高Lewis肺癌荷瘤小鼠的免疫功能,对Lewis肺癌转移有一定抑制作用,但对Lewis肺癌皮下移植瘤无明显抑制作用。     

仙鱼汤对Lewis肺癌荷瘤小鼠免疫功能的影响

[目的]观察仙鱼汤对Lewis肺癌荷瘤小鼠免疫功能的影响.[方法]选用C57BL/6J小鼠50只,腋窝皮下接种Lewis肺癌细胞株复制肺癌模型,接种24 h后随机分为5组:模型组,环磷酰胺(CTX)组(剂量为20 mg·kg-1·d-1),仙鱼汤高、中、低剂量组(剂量分别为1.65、0.85、0.44 g·kg-1·d-1);14 d后检测各组小鼠瘤体质量、抑瘤率、脾脏与胸腺指教、血清肿瘤坏死因子α(TNF-α)和白细胞介素-6(IL-6)水平.[结果]仙鱼汤中、高剂量组可减轻瘤体质量,升高脾脏与胸腺指数.降低血清TNF-α、IL-6含量.与模型组比较均有显著性差异(P＜0.05或P＜0.01);仙鱼汤低剂量组可降低血清IL-6含量(P＜0.05);抑瘤率随着剂量的增加而逐渐增高.[结论]仙鱼汤的抗肿瘤作用可能与其能提高自身免疫功能从而抑制肿瘤生长有关.     

消瘤汤对小鼠移植性肿瘤S180影响的实验研究

目的观察消瘤汤对S180荷瘤小鼠的抑瘤作用及其对胸腺及脾脏的影响。方法建立小鼠移植肉瘤S180模型。用高、中、低剂量消瘤汤及5-氟尿嘧啶治疗荷瘤小鼠,并设空白模型组对照,观察其抑瘤率及胸腺和脾脏指数。结果消瘤汤中剂量组和5-氟尿嘧啶组抑瘤率分别为51.91%和57.82%,均大于30%,与空白模型组比较抑瘤效果明显增高（P〈0.05,P〈0.01）。消瘤汤各剂量组均可逆转胸腺指数、脾指数的异常改变,改善荷瘤小鼠的生存质量。结论消瘤汤可抑制瘤体的增长,能保护荷瘤小鼠的免疫器官,具有良好的免疫调节作用。     

龙葵氯仿提取物对荷瘤鼠肿瘤生长及脾和胸腺指数的影响

目的观察龙葵氯仿提取物对荷瘤鼠肿瘤生长及脾和胸腺指数的影响。方法建立Lewis肺癌移植瘤模型,将小鼠随机分为5组,荷瘤模型组予生理盐水(0.2mL/10g)灌胃,龙葵氯仿提取物高、中、低剂量组分别按50、25、12.5mL/kg剂量的龙葵氯仿提取物灌胃,环磷酰胺组予环磷酰胺(CTX)(20mg/kg)腹腔注射(每隔2天1次),共15天。停药后24h,处死小鼠,分别剥离瘤块、胸腺、脾脏组织称重,测定各组小鼠的肿瘤生长抑制率、脾指数和胸腺指数。结果氯仿高、中、低剂量组抑瘤率分别为25.36%、38.93%、13.57%;CTX组为51.43%。环磷酰胺组及氯仿高、中、低剂量组平均瘤重分别为(1.36±0.07)g、(2.09±0.16)g、(1.71±0.11)g和(2.42±0.07)g,与荷瘤模型组(2.80±0.04)g比较,差异有统计学意义(P0.01、P0.05)。与荷瘤模型组比较,氯仿中剂量组的胸腺指数和脾指数显著提高(分别为130.85%、131.04%),差异有统计学意义(P0.01),CTX组则显著降低(分别为46.24%和74.69%),差异有统计学意义(P0.01)。结论龙葵氯仿提取物具有抑制荷瘤小鼠移植瘤生长的作用,其机制可能为通过增加荷瘤小鼠的胸腺和脾脏的重量,抑制荷瘤小鼠胸腺和脾脏萎缩,增加小鼠抗肿瘤免疫反应。     

槲皮素及槐米提取物对小鼠Lewis肺癌的抑瘤实验研究

目的　观察槲皮素及槐米提取物对小鼠Lewis肺癌的肿瘤生长抑制作用 ,以及与顺铂联合治疗的效果 ,并探讨其对小鼠免疫功能器官重量和血常规指标的影响。方法　以槲皮素和槐米提取物制成受试溶液 ,以移植Lewis肺癌的ICR小鼠为动物模型 ,槲皮素试验组和槐米提取物试验组分别在移植前以槲皮素或槐米提取物连续灌胃 10d ,在移植后继续灌胃 16d ,顺铂治疗组在移植后隔天腹腔注射 1mg/kg剂量的顺铂 1次 ,肿瘤移植 17d后测定各组小鼠体重、瘤重、脾脏及胸腺的重量和血常规指标 ,计算抑瘤率 ,脾指数和胸腺指数。结果　槲皮素高、中、低剂量组的抑瘤率分别为 4 4 .5 %、4 2 .7%、34.3% ;槐米提取物高、中、低剂量组抑瘤率分别为 4 6 .4 %、4 3.8%、37.3%。顺铂治疗组的抑瘤率为 4 0 .2 % ,而顺铂 中剂量槲皮素组和顺铂 中剂量槐米提取物组的抑瘤率分别为 4 9.3%和 5 5 .2 %。小鼠荷瘤后出现脾脏重量和血常规指标的异常 ,经过治疗后 ,异常状态有明显改善。结论　经口给予槲皮素和槐米提取物对小鼠Lewis肺癌有良好的抑瘤作用 ,与顺铂联合治疗的效果明显增强。      

白藜芦醇对小鼠Lewis肺癌细胞凋亡的影响

目的探讨白藜芦醇（Res）对小鼠Lewis肺癌细胞凋亡的影响。方法建立C^57BL小鼠Lewis肺癌模型,将40只接种Lewis肺癌的C^57BL小鼠随机分成4组：对照组、Res低剂量组（2．5mg／kg·d）、Res中剂量组（5mg／kg·d）和Res高剂量组（10mg／kg·d）,每组10只。连续灌胃20日,于接种后第22天处死小鼠,检测肿瘤体积及重量,用原位末端标记法（TUNEL）检测肿瘤细胞凋亡指数（AI）。结果Res中、高剂量组肿瘤的生长明显受到抑制,瘤重和肿瘤体积明显低于对照组（P〈0．01）,其抑瘤率分别为39．41％、50．35％,明显高于Res低剂量组（11．81％）,差异均有显著性（P〈0．01）。Res中、高剂量组AI明显高于对照组（P〈0．01）,但低剂量Res对AI无明显影响。结论白藜芦醇可明显抑制小鼠Lewis肺癌的生长,其机制可能与促进细胞凋亡有关。     

猴头菌多糖对Lewis肺癌荷瘤小鼠抑瘤作用及其机制研究

目的探讨猴头菌多糖(HPS)对Lewis肺癌荷瘤小鼠肿瘤抑制作用及其可能机制。方法选取小鼠50只均接种Lewis肺癌瘤株造模,随机分为HPS高、中、低剂量组、环磷酰胺(CTX)组和模型对照组,每组10只,HPS不同剂量组分别给予HPS 200 mg/(kg·d)、100 mg/(kg·d)、50 mg/(kg·d),连续给药10 d;CTX组给予CTX 40 mg/(kg·d),连续给药3 d;模型对照组每天给予生理盐水0.1 mL/10 g。另选取10只健康小鼠作为正常对照组。10 d后对各组小鼠眼球取血,分离血清,ELISA法测定肿瘤坏死因子-α(TNF-α)和白细胞介素-2(IL-2),分离瘤体,称质量并计算抑瘤率。结果与模型对照组相比,CTX组和HPS高、中、低剂量组的瘤重均显著降低(P0.05),抑瘤率分别为73.52%、44.33%、29.65%和16.58%,各组间差异均有统计学意义(P0.05)。与正常对照组相比,模型对照组小鼠TNF-α显著增高,IL-2显著降低(P0.05);与模型对照组相比,CTX组和HPS各剂量组的TNF-α均显著降低,IL-2均显著增高(P0.05),HPS各剂量组变化幅度显著小于CTX组(P0.05),但HPS各剂量组间无统计学意义(P0.05)。结论 HPS对小鼠Lewis肺癌具有剂量依赖性的抑瘤作用,其机制可能与改善血清TNF-α和IL-2水平,进而改善机体免疫功能有关。     

叶下珠复方对H_（22）肝癌小鼠的体内抑瘤作用研究

目的研究叶下珠复方对H22肝癌小鼠的体内抑瘤作用。方法建立H22细胞移植性肿瘤模型小鼠,随机分为模型对照组、阳性对照组、叶下珠复方低剂量组[0.2g/（kg·d）]、叶下珠复方中剂量组[1.0g/（kg·d）]、叶下珠复方高剂量组[5.0g/（kg·d）]共5组,连续给药8天后处死,测量小鼠的瘤重、胸腺指数、脾指数,并计算肿瘤生长抑制率。结果叶下珠复方低、中、高剂量组的抑瘤率分别为50.3%、49.9%、50.3%,与模型对照组相比,有显著性差异,但低、中、高剂量组间的肿瘤抑制率没有统计学差异。结论叶下珠复方对H22小鼠肝癌细胞有抑制作用,但肿瘤生长抑制率与给药剂量间不存在量效关系。     

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.