CpG-ODN对小鼠骨髓造血系统辐射损伤的保护作用

目的 探讨Toll样受体9(Toll-like recptor 9,TLR9)激动剂--含CpG基序的寡核苷酸(CpG-ODN)对小鼠骨髓造血系统辐射损伤的治疗作用.方法 小鼠在照射后30 min、24 h、48 h连续腹腔注射CpG-ODN(50 μg/只),观察小鼠不同剂量照射后存活率的变化,检测特定时间内血液中白细胞和骨髓中有核细胞的含量及其骨髓病理切片,外源性脾结节集落形成数.结果 CpG-ODN能提高照后小鼠的存活率,提高小鼠外周血白细胞和骨髓有核细胞数(P<0.01),缓解骨髓病理学的损伤,减少骨髓干细胞的死亡.结论 CpG-ODN能减轻小鼠骨髓造血系统辐射损伤.     

五加双参片对辐射和化学物质损伤细胞的影响

目的:研究五加双参片对60Co辐射损伤细胞的影响. 方法:采用健康小鼠作为实验对象,五加双参片灌胃给药,使用60Co作为辐射物制备辐射损伤模型,采血记数外周血白细胞及骨髓造血细胞数、骨髓微核细胞数并测定胸腺DNA含量;环磷酰胺(CY)制备低血细胞模型,采血测定白细胞和血小板总数;观察五加双参片对辐射损伤和化学物质损伤的保护作用. 结果:对保护辐射损伤外周血白细胞与骨髓造血细胞,五加双参片能使损伤细胞得到恢复,加速其增殖与激活,与空白组比较(P＜0.01),优于利血生对照组(P＜0.01);五加双参片组骨髓微核细胞千分率低于模型对照组(P＜0.01);同时五加双参片组辐射小鼠胸腺DNA含量明显高于模型对照组(P＜0.01);五加双参片还能防治CY所致的白细胞和血小板减少,与空白组比较P＜0.01,优于对照组(P＜0.05). 结论:五加双参片对辐射损伤细胞与骨髓造血细胞和对防治CY所致的白细胞和血小板减少症均有保护作用. 五加双参片能保护骨髓细胞,减轻60Co辐射对骨髓细胞的损害;对胸腺细胞DNA有保护作用.     

生白饮对白细胞减少症模型小鼠免疫和造血功能的影响

目的 观察中药复方生白饮口服液对小鼠免疫和造血功能的影响.方法 用注射给予环磷酰胺的方法建立小鼠白细胞减少症模型后,生白饮灌胃给药15d,观察外周血白细胞、骨髓有核细胞数、淋巴细胞转化指数、网织红细胞以及细胞肿瘤因子(TNF)、白细胞介素-6(IL-6)指标的变化.结果 与模型组比较,生白饮各剂量组均可促进小鼠外周血白细胞、网织红细胞、骨髓有核细胞数、淋巴细胞转化指数、TNF、IL-6活性指标的恢复及升高(P＜0.05,P＜0.01).结论 生白饮口服液有显著改善机体免疫功能和刺激骨髓造血功能的作用.     

升白胶囊对环磷酰胺所致小鼠白细胞减少症影响的研究

目的研究升白胶囊对环磷酰胺所致小鼠白细胞减少症的影响以及升高白细胞的作用机制。方法将60只小鼠随机分为正常对照组,模型对照组,贞芪扶正胶囊组及升白胶囊大、小剂量组,每组12只,各组分别灌胃给予蒸馏水及相应药物混悬液,灌胃第8 d,除正常对照组外,其余4组小鼠通过腹腔注射环磷酰胺制备白细胞减少症模型,观测升白胶囊对小鼠外周血象、骨髓有核细胞数和骨髓DNA含量的影响。结果与正常对照组比较,模型对照组白细胞(WBC)数、骨髓有核细胞(BMNC)数及骨髓DNA含量显著降低(P0.01);与模型对照组比较,贞芪扶正胶囊组与升白胶囊大、小剂量组WBC数、BMNC数及骨髓DNA含量显著升高(P0.01或P0.05)。结论升白胶囊对环磷酰胺所致小鼠白细胞减少有显著的升高作用,其机制与促进骨髓造血功能有关。     

复方黄芪注射液对小鼠多能造血干细胞(CFU—S)影响的实验研究

将经(60)~Coγ射线和环磷酰胺联合处理后的贫血小鼠随机分为两组,分别腹腔注射复方黄芪注射液及生理盐水,连续6天.第9天检测脾结节、血红蛋白、红细胞、白细胞和骨髓有核细胞,结果显示,用药组的脾结节、白细胞和骨髓有核细胞数明显高于对照组(P<0.01).而血红蛋白含量和红细胞数两组未见明显差异(P>O.05).     

E838保护放化疗小鼠造血功能的疗效观察

目的:研究E838对137Csγ射线和环磷酰胺所致小鼠白细胞减少症及造血功能的保护作用。方法:采用137Csγ射线和环磷酰胺造模,分别测定两个模型骨髓造血干细胞脾脏节结(CFU-S)、外周血白细胞数、骨髓DNA、骨髓有核细胞数、脾脏指数的变化。结果:E838能减轻环磷酰胺和137Csγ射线对小鼠造血系统的损伤作用。E838各组的外周血白细胞、骨髓有核细胞数与对照组相比有明显的增高,中、高剂量组与对照组比较,经统计学处理有显著性差异。CFU-S与对照组比较有显著性差异。脾脏指数及胸腺指数均高于对照组,高剂量组脾脏指数与对照组比较有显著性差异。结论E838具有改善机体免疫功能和刺激骨髓造血功能的作用。     

大蒜油对环磷酰胺化疗小鼠白细胞减少症的预防作用

目的 探讨大蒜油 (GO) 对环磷酰胺（CP）化疗荷瘤小鼠白细胞减少症的预防作用。方法 60只昆明小鼠随机分为荷瘤模型组（Model组）、CP组、25μg/g GO+CP组（GO1+CP组）和50μg/g GO+CP组（GO2+CP组）,共4组。右侧腋窝下接种H22瘤细胞,连续给药13d 。观测体质量、瘤重、脾重、脾结节计数、外周血象、骨髓DNA含量、骨髓有核细胞计数及骨髓嗜多染红细胞微核率变化。结果 与Model组相比,CP组瘤重减少60.5%（P<0.05）,白细胞计数降低65.9%（P<0.05）,脾脏指数、脾结节计数、骨髓DNA含量、骨髓有核细胞计数分别降低了34.8%,63.1%,50.1%,64.3%（P<0.05）,骨髓微核率升高到40.2‰（P<0.05）。GO1+CP组和GO2+CP组抑瘤率分别为58.1%、62.0%,与CP组差异无统计学意义（P>0.05）。与CP组比较,GO2+CP组白细胞计数显著增加（P<0.05）,脾脏指数、脾结节计数、骨髓DNA含量、骨髓有核细胞计数分别升高了60.0%,161.3%,39.7%,140%（P<0.05）,其骨髓微核率降低至28.6‰（P<0.05）。结论 大蒜油在保证环磷酰胺抑瘤作用下,可明显减轻白细胞减少症等化疗副作用。     

抑白升血糖浆对化疗小鼠造血功能和免疫功能的影响

目的观察抑白升血糖浆(YBSX)对环磷酰胺(CTX)处理的小鼠造血功能和免疫功能的影响并确定其最佳给药方式。方法将YBSX按照单纯预防、单纯治疗和预防 治疗3种给药方式ig给药，常规方法计数小鼠白细胞数、血小板数、骨髓有核细胞数，测定脾脂数；鸡红细胞吞噬实验测定巨噬细胞(MФ)吞噬率和吞噬指数；ELISA法测定血清中肿瘤坏死因子(TNF—α)含量。结果YBSX对白细胞数、血小板数、骨髓有核细胞数、脾指数、巨噬细胞吞噬指数和TNF-α含量都有不同程度的改善。结论YBSX可改善受CTX抑制小鼠的造血功能和免疫功能，且预防加治疗给药效果最佳。     

磷酸羟基哌喹对血液系统辐射损伤保护作用的实验研究

目的研究磷酸羟基哌喹对辐射损伤小鼠血液系统的保护作用。方法40只昆明小鼠,随机分为5组（HPQP低、中、高剂量组,空白对照组和正常组）,除正常组外,其余各组给予4.5 Gy60Co-γ射线全身照射,以外周血白细胞、血小板计数观察辐射后小鼠的血液系统变化,初步观察药物对血液系统的影响,并筛选出药物的合适剂量;另取24只小鼠,随机分为3组（用药组、对照组、正常组）,以此前确定的磷酸羟基哌喹最适剂量于照射前灌胃给药,予9.0 Gy60Co-γ射线全身照射,照射后第9天处死小鼠,以脾结节法、骨髓有核细胞计数法、骨髓病理观察药物对小鼠造血功能的影响。结果磷酸羟基哌喹可促进辐射后小鼠白细胞恢复（P〈0.01）,降低死亡率（P〈0.01）,使脾结节（CFU-S）数、骨髓有核细胞数明显增加（P〈0.01）。结论磷酸羟基哌喹对辐射损伤小鼠血液系统有保护作用。     

补肾泻肝方对辐射小鼠造血功能的保护作用

目的：探索补肾泻肝方（Bu Shen Xie Gan Fang,简称补泻方、BXF）改善辐射所致小鼠造血抑制的作用机制。方法：在急性辐射损伤模型上，观察BXF对辐射小鼠外周血象、骨髓造血功能的影响；用TUNEL法检测补泻方对辐射诱导的小鼠造血细胞凋亡的影响。结果：补泻方能显提高辐照小鼠外周血白细胞计数，显提高受照小鼠30d存活率；显增加7．5Gy受照小鼠骨髓造血祖细胞产量、内源性脾结节数量、骨髓有核细胞计数及脏器指数。小鼠造血细胞接受4Gy照射，于照后2h就可检测到显的细胞凋亡，于照后6－12h达高峰。补泻方能明显减少接受2－4Gy照射6h后辐射诱导的造血细胞凋亡。结论：补泻方改善辐射所致小鼠造血系统抑制的作用机制是与其显减少辐射所致的造血细胞凋亡有关。     

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.