珊瑚／骨髓复合人工骨修复颌骨缺损的临床应用研究

目的：评价珊瑚／骨髓复合人工骨修复颌骨缺损的疗效。方法：将珊瑚／骨髓复合人工骨用于充填9例颌骨囊肿和3例造釉细胞术后贵留的骨腔,术后1周、1、6和12个月通过临床和X线检查以评价其骨修复效果。结果：10例伤口Ⅰ期愈合,术后1个月缺损区有新骨形成;6个月缺损区可见大量成熟的骨组织,部分珊瑚被降解吸收;12个月珊瑚完全被宿主骨取代,缺损区得到完全修复。另有2例因伤口袭开需去除珊瑚骨。结论：珊瑚／骨髓复合人工骨可促进颌骨缺损的修复,是较理想的骨移植替代材料,减少缝合时伤口的张力是植骨成功的关键。     

珊瑚人工骨和自体骨髓复合移植修复兔下颌骨缺损实验

用珊瑚人工骨和自体骨髓复合移植修复兔下颌骨实验性骨缺损，术后行Ｘ线、核素骨显像和组织学检查。结果发现：复合珊瑚骨移植术后６周有明显的成骨现象，１２周骨缺损被修复。复合珊瑚骨移植成骨作用明显估于单纯珊瑚骨移植。实验结果表明：珊瑚骨与骨髓复合为成骨作用提供支架、成骨细胞和骨诱导物质，加速骨缺损的修复，是一种良好的骨代用品。     

珊瑚人工骨和自体骨髓复合移植修复兔下颌骨缺损实验

用珊瑚人工骨和自体骨髓复合移植修复兔下颌骨实验性骨缺损，术后行Ｘ线、核素骨显像和组织学检查。结果发现：复合珊瑚骨移植术后６周有明显的成骨现象，１２周骨缺损被修复。复会珊瑚骨移植成骨作用明显优于单纯珊瑚骨移植。实验结果表明，珊瑚骨与骨髓复合为成骨作用提供支架、成骨细胞和骨诱导物质，加速骨缺损的修复，是一种良好的骨代用品。     

99mTc-MDP放射性骨显像观察重组人骨形成蛋白-2与珊瑚人工骨修复牙槽骨缺损

目的：探讨应用^99mTc-MDP放射性骨显像观察重组人骨形成蛋白－2与珊瑚人工骨在牙槽骨缺损修复中成活和成骨效果的价值。方法：拔除12只成年狗两侧上颌第2及第3切牙，并去除牙槽窝之间的牙槽间隔，一侧随即植入复合骨，对侧植入珊瑚人工骨（珊瑚骨）作为对照。并与植入后4，8，12周取材，采用组织学观察、图像分析和^99mTc-MDP核素骨显像等方法比较两种植入材料在牙槽窝中的骨修复能力。结果：复合骨植入牙槽骨后，材料被逐渐降解吸收，新骨不断生成，12周后，植入材料完全被成熟的骨组织取代；图像分析结果显示不同时间复合骨组新骨形成的比值显著高于珊瑚骨组（P＜0．05）；4和8周复合骨组核素浓聚程度高于珊瑚骨组，12周两组核素浓聚程度差异不明显。结论：^99mTc-MDP放射性骨显像能早期判断移植骨的成活情况及成骨效果。     

99Tcm-MIBI/18F-FDG双核素心肌灌注-代谢显像在心肌梗死后自体骨髓干细胞移植治疗中的应用

目的 探讨^99Tcm-MIBI/^18F-FDG双核素心肌灌注-代谢显像对心肌梗死患者自体骨髓间质干细胞和单个核细胞移植治疗的评估价值。方法 对14例冠心病伴心肌梗死1-35个月的患者（细胞移植组8例，常规治疗组6例），于术前和术后3、8个月行双核素心肌灌注-代谢显像，用半定量法观察分析图像。结果移植组中，6例前壁心肌梗死患者术后3、8个月心肌双核素显像缺损区占整个心肌面积由术前的45．5％减少至39％和25％，差异有统计学意义（P〈0．05），2例下壁心肌梗死患者术前后改变不明显。6例对照组患者术后3个月心肌双核素显像缺损区占心肌面积减少，术后8个月与术后3个月比较无明显改变。结论 ^99Tc^m-MIBI／^18F-FDG双核素心肌灌注-代谢显像能较好地观察和评价心肌梗死骨髓干细胞移植治疗后的改善程度。     

冻干骨与自体骨髓移植修复颌骨部分缺损

目的　探讨用骨移植修复颌骨缺损的方法。方法　采用异体冻干骨与自体红骨髓复合骨对 18例颌骨缺损患者进行移植。结果　术后随访 1～ 12个月 ,受植区无红肿 ,无瘘道。X片显示受植区骨小梁排列清晰。结论　冻干骨与自体骨髓复合骨移植是修复颌骨部分缺损的一种简便有效的方法     

复合珊瑚骨充填颌骨缺损的临床观察

目的：观察珊瑚人工骨复合庆大霉素在颌骨缺损修复中的效果。方法：临床应用珊瑚人工骨复合庆大霉素充填33例颌骨缺损，并与血块充填组37例进行比较分析。结果：珊瑚人工骨复合庆大霉素充填组的骨修复速度快，抗感染性明显优于血块充填组。结论：珊瑚人工骨制备简单、经济，可加速骨缺损的修复，是一种良好的骨代用品。     

珊瑚人工骨复合有胚骨充填颌骨缺损的临床观察

临床应用珊瑚人工骨颗粒复合冷冻脱钙人胚骨及少量抗生素充填３５例颌骨缺损，并选择３０例血块充填组进行比较分析。结果显示：珊瑚人工骨事人胚骨组的骨修复速度、抗感染性明显优于血块充填组。认为珊瑚人工骨复合人胚骨充填颌骨损是一种较为实用的骨充填材料。     

自体骨游离移植在下颌骨缺损修复中的临床应用分析

目的 探讨自体髂骨、肋骨游离移植修复下颌骨缺损的临床疗效。方法 回顾性总结分析42例自体髂骨、肋骨游离移植修复下颌骨缺损病例，经随访6个月～5a，观察移植骨存活、咬合关系与咀嚼功能及颌面部外形恢复情况。结果42例中，39例植骨区伤口Ⅰ期愈合，占92％；41例移植骨完全成活，占97％；35例咬合关系与咀嚼功能恢复良好，占83％；36例面部外形恢复满意，占85％。颜面外形及咀嚼功能恢复较差者多为大范围缺损行游离肋骨移植病例。结论 单纯自体骨游离移植修复下颌骨缺损相对术式简单，操作简便，只要严格掌握适应证、修复效果满意，在下颌骨缺修复中仍具有较大应用价值。     

23例下颌骨缺损修复的临床分析

目的：分析肿瘤术后颌面缺损的修复的临床应用和效果。方法：下颌骨节段性缺损行自体骨（髂、肋骨）移植8例，下颌骨腔性缺损采用栅瑚人工植入15例，术后肌注骨多肽生长素一疗程。结果：自体骨移植8例，2例因伤口感染及制动不充分而自动出院，随访二个月并经抗炎治疗后痊愈，余均痊愈出院；珊瑚人工骨植入15例，2例切口位置不当，植入物重力所致创口裂开，继发感染而取出植入物，其余13例均Ⅰ期愈合，结论：下颌骨缺损的修复临床效果满意，创口无感染，创口缝合不紧张，骨接触面密贴并予以充分的制动是植骨成功的主要原因。     

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.