小鼠IL-12基因转染对人卵巢癌Skov3细胞的生长及细胞因子的表达

目的:观察含小鼠IL-12全长基因的质粒转染到Skov3人卵巢癌细胞中,在脾细胞存在的情况下对肿瘤细胞的影响及相关细胞因子的表达. 方法:脂质体转染技术将基因转染至Skov3人卵巢癌细胞中,ELISA方法检测IL-12及INF-γ的表达,MTT方法检测对Skov3卵巢癌细胞增殖的影响. 结果:转染后48 h检测到IL-12的高表达,约(473±38) ng/L;而未转染组约13～17 ng/L,两者比较差异有统计学意义(P＜0.05). 在脾细胞作用下产生INF-γ,以作用后24 h表达量高,约(173±18) ng/L,较未转染组高,比较有统计学意义(P＜0.05). 转染后癌细胞免疫组化可见IL-12表达,在脾细胞的作用下,IL-12对Skov3卵巢癌细胞有抑制其增殖的作用(P＜0.05). 结论:可以将IL-12基因转染至Skov3人卵巢癌细胞中并表达IL-12,脾细胞检测其活性并有相应的细胞因子产生,对Skov3细胞有抑制其增殖作用,从而杀伤卵巢癌细胞,具有抗肿瘤作用.     

mIL-12基因转染人卵巢癌SKOV3细胞株抗肿瘤免疫作用研究

目的 观察含mIL-12全长基因的质粒转染到SKOV3卵巢癌细胞中,在脾细胞存在的情况下相关细胞因子的表达及免疫抗肿瘤作用.方法 脂质体转染技术将基因转染至SKOV3卵巢癌细胞中(SKOV3/IL-12),同时以空质粒载体转染SKOV3细胞(SKOV3/neo)作为对照,描绘生长曲线,ELISA方法检测IL-12及INF-γ的表达,MTT方法检测对SKOV3卵巢癌细胞的抑制率.结果 转染48、60h SKOV3/IL-12细胞中IL-12蛋白表达量与SKOV3/neo及SKOV3组比较,差异均有统计学意义(P＜0.05);SKOV3/IL-12细胞增殖能力降低,抑制率63.71%与SKOV3/neo及SKOV3细胞比较,差异均有统计学意义(P＜0.05).在脾细胞作用下产生INF-γ,以作用后24h表达量高,约(173±17.8)pg/mL,较未转染组高,比较有统计学意义(P＜0.05);在脾细胞的作用下,IL-12对SKOV3卵巢癌细胞有抑制其增殖的作用.结论 ①可以将IL-12基因转染至SKOV3卵巢癌细胞中并表达IL-12.②IL-12基因转染在效应细胞作用下能够明显降低 SKOV3细胞株的增殖能力.     

洛铂诱导卵巢癌细胞SKOV3凋亡的研究

目的探讨洛泊对体外培养的浆液性卵巢癌细胞SKOV3凋亡的诱导作用。方法体外培养卵巢癌细胞SKOV3,用MTT比色法检测洛铂对SKOV3细胞株的增殖抑制作用以及流式细胞仪检测洛铂对SKOV3细胞株的凋亡率。结果体外培养的卵巢癌SKOV3细胞经不同浓度的洛泊处理后细胞生长明显受到抑制,洛泊作用于卵巢癌SKOV3细胞可诱导细胞的凋亡。结论卵巢癌SKOV3细胞对洛泊敏感,洛泊对卵巢癌细胞的杀伤作用是通过诱导细胞凋亡途径实现的。     

转染IL-12基因的人脐带间充质干细胞对卵巢癌细胞的体外增殖和对裸鼠体内移植瘤的抑制作用

摘要：目的探讨人脐带间充质干细胞（UC-MSCs）负载白细胞介素12（IL-12）重组腺病毒载体抗卵巢癌SKOV3作用的研
究。方法腺病毒介导IL-12 基因转染体外培养的UC-MSCs（AdIL-12-MSCs）,Western blotting 和RT-PCR 检测
AdIL-12-MSCs中IL-12基因蛋白及mRNA表达,ELISA法检测AdIL-12-MSCs上清液中IL-12的表达。光镜下观察外源
性IL-12对SKOV3细胞形态的影响,MTT法检测AdIL-12-MSCs分泌的IL-12对SKOV3细胞增殖活性的影响,流式细胞
仪检测AdIL-12-MSCs 上清液对SKOV3 细胞凋亡的影响。建立裸鼠卵巢癌SKOV3 皮下移植瘤模型,观察移植
AdIL-12-MSCs 后对移植瘤的影响。结果腺病毒介导IL-12 基因成功转染UC-MSCs形成AdIL-12-MSCs,转染后细胞
IL-12基因在蛋白及mRNA水平均有明显表达。AdIL-12-MSCs分泌的外源性IL-12显著抑制卵巢癌SKOV3细胞的增殖
并诱导其凋亡,并抑制卵巢癌SKOV3移植瘤在裸鼠体内的生长（P<0.05）。结论转染IL-12基因的UC-MSCs能够在蛋白
及mRNA水平表达IL-12基因,显著抑制卵巢癌SKOV3细胞的增殖并诱导其凋亡,抑制卵巢癌SKOV3移植瘤在裸鼠体
内的生长。     

洛铂对SKOV3细胞凋亡及bax、bcl-2基因表达的影响

目的研究洛泊对体外培养的浆液性卵巢癌细胞SKOV3凋亡作用及探讨其对凋亡基因bcl-2和bax表达的影响。方法体外培养卵巢癌细胞SKOV3,用MTT比色法检测洛铂对SKOV3细胞株的增殖抑制作用以及流式细胞仪检测洛铂对SKOV3细胞株的凋亡率,流式细胞仪检测凋亡相关蛋白bax、bcl-2的表达。结果体外培养卵巢癌SKOV3细胞经不同浓度洛泊处理后细胞生长明显受到抑制,洛泊作用于卵巢癌SKOV3细胞可诱导细胞的凋亡,同时,随着洛铂浓度的增加,bax基因的表达增加,而bcl-2表达减少。结论卵巢癌SKOV3细胞对洛泊具有药物敏感性,洛泊可诱导卵巢癌细胞的凋亡,bax蛋白的表达增加和bcl-2蛋白表达的减少可能是洛泊诱导卵巢癌细胞的凋亡机制之一。     

小鼠白介素-12体外基因转染成功与瘤基因疫苗的应用

目的 探讨小鼠白介素-12基因体外转染至人卵巢癌细胞SKOV3中与瘤基因疫苗应用的可行性。方法 以脂质体外转染法将含有小鼠白介素-12全长基因的质粒转染至人卵巢癌细胞SKOV3中，转染后以ELISA法检测上清中mIL-12细胞因子的表达。结果 小鼠白介素-12基因可以转染至人卵巢癌SKOV3中，转染后可以检测到mIL-12的表达。结论 体外转染mIL-12基因的成功为瘤基因疫苗的应用提供了体外实验基础及可行性。     

VEGF-C反义寡核苷酸对卵巢癌细胞SKOV3的黏附、侵袭能力的影响

目的:探讨VEGF-C反义寡核苷酸(VEGF-C,ASODN)对人卵巢癌细胞SKOV3黏附、侵袭能力的影响.方法:以VEGF-C基因编码区为靶点合成反义寡核苷酸,脂质体介导转染.MTT法检测卵巢癌细胞与细胞外基质黏附能力;利用transwell小室,检测卵巢癌细胞侵袭人工基底膜的能力;免疫组化法检测细胞中VEGF-C蛋白表达,western blot检测细胞中MMP-2蛋白表达.结果:与空白对照组及正义序列转染组相比,ASODN组对细胞外基质黏附率明显降低(P＜0.01),穿透重组基质膜数目明显下降(P＜0.01),细胞中VEGF-C、MMP-2蛋白表达明显下降(P＜0.01).结论:VEGF-C ASODN可明显抑制卵巢癌细胞体外实验中的黏附和侵袭能力,下调MMP-2的表达可能是其作用途径.     

融合型自杀基因Fcy::Fur/5-FC对人卵巢癌细胞杀伤作用的研究

目的研究融合型自杀基因Fcy∶∶Fur联合5-氟胞嘧啶（5-FC）对人卵巢癌细胞株（SKOV3）的杀伤作用。方法构建含有融合型自杀基因Fcy∶∶Fur的荧光真核表达质粒,转染SKOV3细胞,筛选稳定表达的细胞株,RT-PCR和Western blot检测Fcy∶∶Fur表达。以MTT法和FCM法检测5-FC对Fcy∶∶Fur转基因细胞的杀伤效应。结果测序鉴定证实插入片段正确。细胞转染24h后,60%转染细胞发出绿色荧光。经G418筛选,RT-PCR和Westernblot法检测到Fcy∶∶Fur表达。加入5-FC后,MTT法检测到明显杀伤效应,FCM法检测到显著凋亡峰。结论融合型自杀基因Fcy∶∶Fur联合5-FC对人卵巢癌细胞SKOV3有明显的杀伤作用。     

RNAi抑制卵巢癌SKOV3细胞MMP-24基因表达及对细胞侵袭的影响

目的 探讨应用RNA干扰技术沉默MMP-24基因表达,研究其对人卵巢上皮癌SKOV3细胞侵袭力的影响.方法 设计合成2条特异性针对MMP-24基因的siRNA,转染至SKOV3中,采用RT-PCR和Western blotting检测MMP-24mRNA和蛋白表达情况,细胞侵袭实验观察转染后细胞侵袭能力的变化.结果 转染siRNA后,卵巢癌细胞MMP-24mRNA表达受抑制,蛋白表达降低,细胞侵袭力减弱.结论 RNAi沉默MMP-24基因可影响卵巢癌细胞的侵袭,有可能成为治疗卵巢癌的新途径.     

外源性p53基因抑制卵巢癌细胞的增殖并增加其对放疗的敏感性

目的　探讨外源性p5 3基因转染对人卵巢癌细胞系SKOV - 3的生物学行为及放疗敏感性的影响。方法　用脂质体介导的方法 ,将p5 3基因的真核细胞表达载体 (PcDNA -p5 3)导入不表达p5 3的人卵巢癌SKOV - 3细胞中 ,经G4 1 8筛选 ,Northernblot及Westernblot鉴定后 ,观察细胞生长速度、集落形成能力和增殖周期的变化 ;观察p5 3基因转染与放疗联合作用对细胞集落形成的影响。结果　外源性p5 3基因的表达明显抑制了卵巢癌细胞的生长及集落形成能力 ,使细胞阻滞于G1 期。p5 3基因与放疗联合作用明显抑制了卵巢癌细胞的集落形成。结论　外源性p5 3基因能抑制卵巢癌细胞的生长 ,并增加卵巢癌细胞对放疗的敏感性     

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.