肉汤保存法用于淋球菌保种的研究及效果观察

目的：寻找一种更为简单、方便且有效的保存淋球菌的方法。方法：对分离的34株经菌落形态、氧化酶试验及生化反应鉴定为淋球菌的菌株用肉汤在不同的温度下进行保种；并用本实验室自制的培养基对保存菌株进行定期复苏。结果：采用肉汤保存法，淋球菌在-20℃至少可保存2个月．-30℃至少可保存2～3个月，-70℃至少可保存1年以上；并发现液氮中淋球菌的保存效果最好及保存时间最长。结论：肉汤保种法可以用于淋球菌的保存。     

一种室温下保存血型标准血清的方法

采用复合甘油防腐剂在室温下保存血型标准血清。标准血清中加１０％此防腐剂，室温下，抗Ａ血清有效期达１０个月，抗Ｂ血清达９个月。而４℃保存则达１２个月以上。与常用商品标准血清对比检测血样，Ａ型血８３例，Ｂ型血９５例，Ｏ型血１１０例，符合率为１００％。     

菌种保存方法的探讨

菌种保存方法的探讨周玉珍，邓志爱，方丹云，廖筑华（微生物学教研室）关键词肉培养基，脱脂牛奶，兼性厌氧菌，无芽胞厌氧菌中图号Ｑ９３－３３我们在１９９４年９月用疱肉培养基置４℃冰箱保存２０株兼性厌氧菌和５５株无芽胞厌氧菌；用脱脂牛奶置－２０℃保存１０株兼...     

两种保存钩端螺旋体地方菌株方法的效果观察

目的：观察不同方法保存钩端螺旋体地方菌株效果。方法：采用一次性密封塑料试管和硅胶塞试管保存。结果：采用硅胶塞试管保存钩体地方菌株，6个月、12个月的存活率分别为100．00％和80．77％；密封一次性塑料管保存钩体地方菌株，14、18个月的存活率为89．47％和71．43％。结论：两种保存方法均优于传统棉塞、橡胶塞试管保存法，其中密封一次性塑料管保存时间更长，且存活率高，简便易行。     

不同方法保存猪软骨异种移植的实验研究

为了探索不同方法保存猪肩胛软骨对异种移植的影响，为临床应用提供科学依据。采用４种方法保存猪肩胛软骨，并按保存方法及保存时间分７组移植到日本大耳白兔背部皮下，每组５只动物，共３５只进行观察比较。①γ－射线辐射处理，４℃保存３个月为Ａ组，１个月为Ｂ组；②　（戊二醛）＝０．５％磷酸缓冲液浸泡，４℃保存３个月为Ｃ组，１个月为Ｄ组；③深低温－８０℃保存３个月为Ｅ组，１个月为Ｆ组；④新鲜软骨为Ｇ组。移植术后每周１次活体检查软骨位置及大小，术后１周、１个月、３个月、６个月，每只动物取一块软骨行大体标本和光学显微镜观察，术后６个月取软骨标本行电子显微镜观察。实验结果显示：　（戊二醛）＝０．５％浸泡、γ－射线辐射处理可降低软骨抗原性，４℃保存时间≤１个月为最佳保存时间，按软骨被吸收卒大小，依次为Ｅ、Ｆ、Ａ、Ｂ、Ｇ、Ｃ、Ｄ组。结果提示：①猪肩胛软骨可作为异种移植代用材料的最佳供体之一；②猪肩胛软骨异种移植到家兔皮下，可长期存留６个月；③本实验４种猪软骨保存方法相比较，按异种移植后软骨抗原性降低和被吸收、变形程度轻重，以　（戊二醛）＝０．５％磷酸缓冲液浸泡保存方法为最佳条件，γ－射线辐射处理次之；④　（戊二醛）＝０．５％磷酸缓冲     

不同方法保存存猪软骨异种移植的实验研究

为了探索不同方法保存猪肩胛软骨对异种移植的影响，为临床应用提供科学依据。采用４种方法保存猪肩胛软骨，并按保存方法及保存时间分７组移植到日本大耳白兔背部皮下，每组５只动物，共３５只进行观察比较。①ｒ－射线辐射处理，４℃保存３个月为Ａ组，１个月为Ｂ组；②ｙ（戊二醛）＝０．５％磷酸缓冲液浸泡，４℃保存３个月为Ｃ组，１个月为Ｄ组；③深低温－８０℃保存３个月为Ｅ组，１个月为Ｆ组；④新鲜软骨为Ｇ组。移植术后每     

脐血中造血细胞的分离与祖细胞培养

目的 通过脐血粒单系造血祖细胞（ＣＦＵ－ＧＭ）培养，探讨其临床应用前景与价值。方法 琼脂半固体培养法，比较脐血、骨髓、外周血ＣＦＵ－ＧＭ，比较脐血４℃保存２，４，６天后，ＣＦＵ－ＧＭ回收率。结果 脐血ＣＦＵ－ＧＭ的平均产率接近骨髓，明显高于成人外周血，脐血４℃保存，ＣＦＵ－ＧＭ回收率２天为８５．５％，４天为３５．１％，６天为１０．１％，结论：脐血中富含造血干／祖细胞，为造血细胞移植提供新的来源。脐     

简易实用的抗HBsEIA诊断药盒的研制及其在新兵体检中的应用

研制了一种价廉、质量稳定、操作简便、特别适用于基层部队和广大农村的抗ＨＢｓＥＩＡ诊断药盒，该药盒４℃下保存３个月与新制备药盒性能相似。用本药盒与市售精装药盒对比检测４４９份新兵血清标本，一致率为９８．８９％，阳性率（３０．５％，１３７／４４９）略高于市售药盒（２９．４％，１３２／４４９）。阳性标本经中和试验证明特异性良好。     

致病性奈瑟氏球菌快速低温保存法的建立

致病性奈瑟氏菌脑膜炎球菌，淋球菌在自然环境中抵抗力极低，在外界环境中不易存活，由于脑膜炎球菌能产生自溶酶，在培养转种时超过481。则不易生长，常用保存这类细菌的有效方法是冷冻真空干燥法。在经常性教学科研中用巧克力培养基、血清半固体培养基菌种保存期短（2～10d），给经常性教学、科研带来不便，而冷冻真空干燥法需特殊设备，为保证教学科研工作的需要，本文介绍一种致病性奈瑟菌简易保存法，报道如下。1材料与方法1．1标准菌株脑膜炎奈瑟氏菌、淋病奈瑟氏菌1．2培养基及保存没培养基为巧克力培养基，按中国菌种目录处方制备，…     

—20℃不结冰复合抗冻液保存异体皮的实验研究

目的：评价在－２０℃条件下不结冰的复合抗冻液保存异体皮的效果。为异体皮保存提供了一种简便方法。方法，异体皮经复合抗冻液４℃渗透１０分钟，浸泡在抗冻液内－２０℃冰箱中保存，以传统液氮储皮为对照，用琥珀酸酰脱氢酶（ＳＤＨ）皮肤培养生长率为皮肤活力指标，于储存后１周，２月，３月复温冻融进行皮肤活力测定。结果：－２０℃保存异体皮，ＳＤＨ随时间延长而下降，保存２月之内皮肤培养均可成功，生长率无显著差异。保存     

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.