铝酞菁D及其与黄夹甙或维拉帕米合用对肿瘤细胞的光动力治疗作用

目的研究新型光敏剂铝酞菁Ｄ（ＡｌＰＣ－Ｄ）单用及与黄夹甙或维拉帕米合用对体外培养肿瘤细胞的光动力治疗作用。方法细胞经药物作用２ｈ后，用红光辐照一定时间，继续培养２４ｈ，台盼蓝排染法测定药物对肿瘤细胞的抑制率。结果２．５～１０．０μｇ／ｍｌＡｌＰＣ－Ｄ配以５．４或１０．８Ｊ／ｃｍ２的红光射照，能显著杀伤Ｋ５６２和ＳＧＣ７９０１细胞，并有剂量依赖性。０．００１和０．０１μｇ／ｍｌ黄夹甙或单用无效剂量的维拉帕米（５μｇ／ｍｌ）与ＡｌＰＣ－Ｄ合用，能增强后者对Ｋ５６２细胞的光动力作用。结论ＡｌＰＣ－Ｄ对体外培养的肿瘤细胞具有光动力治疗作用，黄夹甙和维拉帕米能增强其作用。     

两亲性酞菁ZnPcS_1P_3的分离及光敏性质研究

目的分离纯化两亲性β-磺酸钾基-三-β-（邻苯二甲酰亚胺甲基）酞菁锌（ZnPcS1P3）,研究其基本的光敏性质。方法对中试生产ZnPcS2P2过程中得到的副产物,采用高效液相制备色谱分离得到两亲性酞菁锌配合物ZnPcS1P3。测定其激发单线态、激发三线态光谱、单线态氧生成速率和光降解速率。结果 ZnPcS1P3荧光量子产率小于无取代酞菁锌（ZnPc）;激发三线态寿命、单线态氧生成速率和光降解速率均大于ZnPc。结论两亲性酞菁锌配合物ZnPcS1P3具有较强的光敏活性,具有潜在的开发利用前景。     

瑞香狼毒水提物小鼠药物血清对小鼠白血病L1210细胞增殖、克隆形成和DNA合成的影响

目的;从整体水平探讨瑞香狼毒水提物（SCLA）的抗癌作用及机制。方法：以不同剂量SCLAig给药后,不同时间采集小鼠血清,处理体外培养的小鼠白血病L1210细胞,观察肿瘤细胞MTT还原,克隆形成能力和DNA合成的改变。结果;SCLA3,6,12g/kg给药1,2,4,8h后的药物血清处理肿瘤细胞后,其MTT还原及克隆形成率均显著降低;给药2h时的药物血清表现出更强的抑制肿瘤细胞增殖作用。SCLA小鼠药物血清也显著抑制[^3H]TdR掺入L1210细胞DNA。结论：直接抑制癌细胞增殖及DNA合成是瑞香狼毒的重要抗癌机制。     

光敏素Ⅱ和酞菁类光敏剂体外光动力学杀伤肿瘤细胞的研究

本实验对体外培养的SMMC-7721人体肝癌细胞系(7721细胞)进行光动力学杀伤(PDT)的研究。共选用了光敏素Ⅱ(PⅡ)、高磺化铝酞菁(AlSPC)、李东方合成的二磺化销酞菁(AlS_2PCL)和二磺化锌酞菁(ZnS_2PCL)、陈发普合成的一磺化铝酞菁(AlS_1PCC)和二磺化铝酞菁(AlS_2PCC)及二磺化锌酞菁(ZnS_2PCC)。在PDT实验中发现:上述光敏剂均对7721细胞有明显的PDT杀伤作用,光敏剂的剂量、种类和孵育     

新型酞菁光敏剂抗肿瘤药理研究

目的开发新一代用于光动力学疗法的光敏剂──锌酞菁，并对其抗肿瘤机理进行初步探讨。方法以红光为光源进行体内、外光动力学效应研究，以第一代血卟啉类光敏剂（ＨＰＳ）为阳性对照；以耳指数反映锌酞菁皮肤光敏毒性；光镜及电镜下观察Ｕ１４肿瘤细胞在光动力学治疗下形态学改变。结果锌酞菁在光照强度为５．４Ｊ／ｃｍ２，照光波长６００～７５０ｎｍ时，能显著杀伤ＦＧＣ８５、ＳＭＭＣ７７２１和ＳＧＣ７９０１，ＩＣ５０分别为０．８３６，１．２３７和１．４０８μｇ／ｍｌ；在体光动力学治疗结果显示，锌酞菁（２ｍｇ／ｋｇ，光照剂量２５２Ｊ／ｃｍ２，腹腔给药后２ｄ照光），对Ｕ１４和Ｓ１８０实体瘤抑瘤率分别为７６．７％和６８．７％，而阳性对照组（１６ｍｇ／ｋｇ，余同上）则分别为３６．３％和５３．２％（Ｐ＜０．００１）。锌酞菁暗反应毒性低，无光照时没有细胞毒性，对小鼠皮肤光敏毒性比ＨＰＳ低，给药后３天即可消失。光镜及电镜下观察到Ｕ１４肿瘤在锌酞菁光敏治疗后，细胞核显著改变，染色质凝集边聚，核固缩及相继出现核破裂、凋亡小体形成等符合程序性细胞死亡的形态学特点，且以上改变在光敏治疗后１０ｍｉｎ即可观察到，故锌酞菁可通过诱导肿瘤细胞凋亡引起肿瘤细胞的快     

铝酞菁D及其与黄夹甙或维拉帕米合用对肿瘤细胞的光动力治疗作用

目的 研究新型光敏剂铝酞菁Ｄ（ＡｌＰＣ－Ｄ）单用及与黄夹甙或维拉帕米合用对体外培养肿瘤细胞的光动力学治疗作用。方法 细胞经药物作用２ｈ后，用红光辐照一定时间，继续培养２４ｈ，台盼蓝排染法测定药物对肿瘤细胞的抑制率。结果 ２．５￣１０．０μｇ／ｍｌ ＡｌＰＣ－Ｄ配以５．４或１０．８Ｊ／ｃｍ＾２的红光射照，能显著杀伤Ｋ５６２和ＳＧＣ７９０１细胞，并有剂量依赖性。０．００１和０．０１μｇ／ｍｌ黄夹甙或单     

卟啉氮芥对人肝癌细胞SMMC7721的光动力杀伤作用

目的：研究新单体化合物卟啉氮芥的光化疗抗肿瘤作用。方法：用结晶紫色法测定 啉氮芥对人肝癌细胞SMMC7721的光动力抑制效应。用测定培养上清乳酸脱氢酶（LDH）活性方法研究光动力作用对人肝癌细胞SMMC7721细胞膜的作用,用^3H-Td掺入法研究光动力作用对人肝癌细胞SMMC7721DNA合成的影响。结果：卟啉氮芥（5μg/ml,培养1h）可使人肝癌细胞SMMC7721D值明显降低、经光激发可使培养上清LDH活性显升高;可使体外培养从肝癌细胞SMMC7721的^3H-TdR掺入显下降,经光激发可使体外培养人肝癌细胞SMMC7721的^3H-TdR掺入量进一步显下降。结论：卟啉氮芥可显抑制人肝癌细胞SMMC7721DNA的合成;对人肝癌细胞SMMC7721有显的光动力抑制作用,轲破坏肿瘤细胞的细胞膜,抑制肿瘤细胞DNA的合成,提示卟啉氮芥对肿瘤细胞有显的光动力杀伤作用,具有发展为光化疗抗癌新药的前景。     

酞菁锌介导的光动力学疗法对骨髓净化的实验研究

目的 研究酞菁锌光敏剂(ZnPcS2P2)介导的光动力学疗法(PDT)对模拟慢性粒细胞白血病缓解骨髓的净化作用。方法 采用荧光分光光度法检测K562细胞及正常细胞内的光敏剂含量。锥虫蓝拒染法、MTT比色法、克隆形成实验检测不同浓度ZnPcS2P2介导的PDT对K562细胞增殖能力的影响。正常混合集落形成细胞(CFU-Mix)、粒一单核系造血祖细胞(CFU-GM)、红系祖细胞(CFu-E)等集落形成实验检测ZnPcS2P2 PDT对正常造血祖细胞的影响。巢式PCR方法检测酞菁锌介导的：PDT作用前后混有不同比例K562细胞的骨髓细胞的bcr-abl mRNA表达。结果 (1)与ZnPcS2P2共孵育5h,K562细胞与骨髓正常单个核细胞(MNC)内的ZnPcS2P2含量分别为10．1、2．2(ng／5x10^5细胞),二者比值达到最高值。(2)0．25μg／ml ZnPcS2P2孵育5h后,用670nm激光以53mW／cm^2的功率密度、2．1J／cm^2的能量密度照射对K562细胞集落形成的抑制率为91．1％,而对正常CFU-Mix、CFU-GM、CFU-E等集落形成的抑制率分别为18．0％、18．6％、17．8％。(3)0．25μg／ml ZnPcS2P2介导的PDT可完全杀灭按1：100至1：1000比例混入骨髓正常MNC中的K562细胞。结论 ZnPcS2P2介导的PDT能选择性杀伤K562细胞,有希望成为新的高效而简便的慢性粒细胞白血病骨髓净化手段。     

激光和血卟啉对肿瘤细胞的杀伤作用研究

[目的]研究激光和血卟啉对肿瘤细胞的杀伤特点.[方法]体外应用K562和MCF7细胞观察不同浓度血卟啉和不同激光强度对细胞的杀伤特点及其激光束杀伤细胞的分布特性;体外培养S180肉瘤细胞接种健康小鼠建立荷瘤小鼠模型,观察静脉注射血卟啉0.5和12h后激光照射对肿瘤的杀伤作用.[结果]在固定的血卟啉浓度或激光强度下,随着激光强度或血卟啉浓度的增加,对肿瘤细胞的杀伤作用成线性作用增强(R2=0.9967,R2=0.9994),其中杀伤作用=血卟啉浓度(μg/ml)×激光能量(J);激光束对细胞的杀伤作用存在明显的不均匀性;荷瘤小鼠在给药后0.5 h给与激光治疗效果好于给药后12h.[结论]血卟啉浓度和激光剂量对肿瘤的杀伤作用存在线性量效关系且激光束对细胞杀伤作用存在明显的不均匀性,该结果为制定最佳的临床治疗方案提供了依据.     

异十三基二胺体内外抗肿瘤作用

目的 观察异十三基二胺（D-79）的体内外抗肿瘤作用.方法 应用锥虫蓝排染法、MTT法检测D-79对多种体外培养肿瘤细胞的细胞毒作用;Bliss法观察D-79急性毒性实验;在可耐受剂量下观察D-79对小鼠移植性实体瘤U14、腹水瘤EAC、HAC的抑制率.结果 D-79显著杀伤多种体外肿瘤细胞,药物作用48 h,IC501.24～3.36 μg/mL;D-79的LD50为36.49 mg/kg（静脉注射）.D-79抑制小鼠移植性实体瘤U14体内生长、提高移植性腹水瘤EAC、HAC小鼠生存时间的作用呈剂量依赖性.结论 D-79有较强的体内外抗肿瘤作用.     

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.