小鼠CD3AK细胞抗肿瘤作用初步观察

目的：通过小鼠ＣＤ３ＡＫ细胞体外对靶细胞的杀伤活性及其体内抗肿瘤作用的观察，了解ＣＤ３ＡＫ细胞的体内外抗肿瘤效应。方法：采用ＭＴＴ法检测小鼠ＣＤ３ＡＫ细胞体外抗肿瘤细胞毒活性，并通过实体瘤的大小、瘤组织病理切片形态观察等分析小鼠ＣＤ３ＡＫ细胞的体内抗肿瘤作用。结果：小鼠ＣＤ３ＡＫ细胞不仅体外具有较强的细胞毒作用，且能有小鼠体内抑制Ｓ１８０肿瘤的细胞的生长和扩散，并诱导Ｓ１８０细胞坏死，与生理盐水对     

NK细胞活性与裸鼠体内移植肿瘤生长的关系

为研究NK细胞活性与裸鼠体内移植肿瘤生长的关系,观察了注射环磷酰胺后裸鼠NK细胞活性的变化,及其对移植肿瘤生长的影响。结果发现:注射环磷酰胺后裸鼠NK细胞活性从(26.67±6.23)％降至(15.00±3.80)％(P<0.01),环磷酰胺组肿瘤生长速度明显快于对照组〔分别为(33.92±10.21)mm/周,(20.03±8.31)mm/周,P<0.05〕,且成瘤率高而潜伏期短。表明NK细胞活性在裸鼠抗肿瘤免疫中具有重要的作用。     

葡萄球菌A蛋白抗癌机理的研究 Ⅱ、葡萄球菌A蛋白对小鼠自然杀伤细胞活性的影响

采用~(125)Ⅰ—udD标记肿瘤靶细胞RNA释放试验,对体内注射SpA纯品或SpA菌体后小鼠脾细胞自然杀伤(NK)活性进行了观测,结果表朋,SpA或SpA菌体经皮下或腹腔注射均可增强小鼠细胞NK活性,SpA菌体所诱导的NK活性似乎高于SpA纯品所诱导的NK效应。     

小鼠CD_3AK细胞抗肿瘤作用初步观察

目的：通过小鼠ＣＤ３ＡＫ细胞体外对靶细胞的杀伤活性及其体内抗肿瘤作用的观察，了解ＣＤ３ＡＫ细胞的体内外抗肿瘤效应。方法：采用ＭＴＴ法检测小鼠ＣＤ３ＡＫ细胞体外抗肿瘤细胞毒活性，并通过实体瘤的大小、瘤组织病理切片形态观察等分析小鼠ＣＤ３ＡＫ细胞的体内抗肿瘤作用。结果：小鼠ＣＤ３ＡＫ细胞不仅体外具有较强的细胞毒作用，且能在小鼠体内抑制Ｓ１８０肿瘤细胞的生长和扩散，并诱导Ｓ１８０细胞坏死，与生理盐水对照组比较有显著差异。结论：ＣＤ３ＡＫ细胞具有较强的体内外抗肿瘤作用     

人白细胞介素-18基因克隆、重组表达及活性测定

白细胞介素 18（ Interleukin 18, IL-18）是单核巨噬细胞系统分泌的重要的 Th1类细胞因子,对 NK细胞的成熟、活化起到重要的调节作用,可以与 IL-12协同增强 NK细胞及 Th1细胞的细胞毒活性,并在细胞免疫的启动过程中起到重要作用。 IL-18基因缺陷鼠的细胞免疫不能被启动, NK细胞的体外活化能力明显下降。小鼠体内外实验显示 IL-18具有较显著的抗肿瘤效应。 IL-18为相对分子质量 18 500的单链活性蛋白,没有 N-糖基化位点,不形成链内二硫键,适于在大肠杆菌（ E.coli）中表达。本实验根据 IL-18成熟蛋白的 cDNA序列,设计引…     

中药多糖抗肿瘤作用的研究进展

对近年来中药多糖抗肿瘤作用研究进展进行了阐述.多糖通过活化巨噬细胞,淋巴细胞,提高NK细胞和LAK细胞的活性,促有丝分裂作用,增强网状内皮系统,促进细胞因子分泌,增强红细胞免疫等作用提高宿主抗肿瘤免疫功能.通过改变瘤体细胞膜的生长特性,抗突变,抗自由基,诱导分化与诱导凋亡等作用而发挥直接的抗肿瘤作用.     

肿瘤坏死因子体内抗肿瘤活性及其对巨噬细胞激活作用的关系

在体外细胞毒活性实验中,小鼠乳腺癌Ca761-86细胞对rTNF不敏感,而在体内,rTNF却可明显抑制Ca761-86细胞的生长。根据(1)rTNF在体外可直接激活小鼠腹腔巨噬细胞杀伤Ca761-86细胞;(2)在体内由rTNF诱导和激活的腹腔和脾脏中的巨噬细胞均可杀伤体外培养的Ca761-86细胞;提示rTNF在体内对Ca761-86细胞的抑制瘤效应与其对巨噬细胞的激活作用也可能有关。     

番茄红素对小鼠移植性肿瘤的抑制作用研究

目的研究番茄红素的体内抗肿瘤作用。方法通过S180肉瘤移植建立荷瘤小鼠模型,给予不同剂量番茄红素后观察S180荷瘤小鼠瘤重、脏器指数、带瘤生存天数、脾淋巴细胞增殖活力及自然细胞杀伤活性(NK活性)。结果番茄红素能明显抑制肿瘤生长,平均瘤重低于肿瘤模型组,且能延长荷瘤小鼠生存天数;可提高荷瘤小鼠脾淋巴细胞增殖活力,增强NK活性。结论番茄红素具有较强的抗肿瘤效应,有很好的应用前景,应对其进行深入研究。     

瘤苗联合当归多糖抗瘤的实验研究

以皮下接种5108肉瘤细胞的昆明鼠为荷瘤动物模型,用S180瘤苗和／或当归多糖（Ap）免疫治疗。结果,二者联用能显著增强荷瘤鼠的巨噬细胞介导细胞毒作用及NK活性。另外,Ap能显著增加初次免疫鼠血清中抗绵羊红细胞抗体滴度。提示,Ap能促进免疫功能,具有免疫佐剂活性。与瘤苗联用可提高瘤苗的主动免疫治疗效应。     

树突状细胞联合重组腺病毒Ad-Mig基因治疗小鼠淋巴瘤的实验研究

目的 观察树突状细胞(DC)和腺病毒介导的小鼠Mig基因对小鼠淋巴瘤的抗肿瘤效果.方法 利用EG7细胞皮下注射C57BL/6小鼠建立小鼠淋巴瘤模型,单独或联合应用DC和携带Mig基因的重组腺病毒(Ad-Mig)直接进行瘤内注射治疗,观察小鼠皮下肿瘤生长情况.采用HE染色观察肿瘤组织的变化.用乳酸脱氢酶(LDH)释放法检测CTL和NK的杀伤活性.结果 DC能显著抑制荷瘤小鼠皮下肿瘤的生长.使肿瘤组织中炎细胞数量增多而肿瘤细胞数量明显减少,能显著增强荷瘤小鼠脾细胞NK和CTL杀伤活性.与单独应用DC相比,DC与Ad-Mig联合应用可明显提高抗肿瘤效果.结论 DC对小鼠淋巴瘤有显著治疗效果.且与Ad-Mig基因联合应用能进一步提高抗肿瘤效果.     

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.