成年大鼠卵巢异体异位移植的实验研究

目的 :探讨大鼠卵巢组织异体异位移植后的生长发育及功能情况。方法 :将成年大鼠卵巢组织植入去势成年雌性大鼠的肾被膜下 ,观察动情周期的恢复及维持 ,通过组织学和组织化学研究移植效果和测定血清雌激素水平观察卵巢内分泌功能。结果 :移植后 13 55± 2 81d出现动情周期 ,对移植卵巢的组织学观察可见不同发育阶段的各级卵泡及间质腺 ;3- β -羟甾脱氢酶组织化学显示它们呈不同程度阳性反应 ;血清学研究显示移植卵巢具有与正常卵巢相近的分泌雌激素的能力。结论 :大鼠卵巢异体异位移植能存活、发育并具有内分泌功能     

大鼠胚胎卵巢移植的实验研究

目的探讨大鼠胚胎卵巢异体异位移植后的生长发育及功能。方法将大鼠胚胎的卵巢移植入去势成年雌性大鼠的肾被膜下,移植40d后取材进行组织学研究,观察移植效果;同时测定血清雌、孕激素等水平。结果移植后第40天,组织学观察,移植物内可见大量发育卵泡及黄体与间质腺,移植卵巢中有丰富的血管。血清雌、孕激素与正常成年大鼠间无显著性差异(P>0.05)。结论大鼠胚胎卵巢移植后能继续生长发育并具有内分泌功能。     

大鼠胚胎卵巢异体异位移植的实验研究

目的研究大鼠胚胎卵巢异体异位无血管皮下移植后的生长、发育及大鼠内分泌功能恢复情况.方法将孕龄为18-20 d的新鲜或冻融大鼠胚胎卵巢植入去势后4周的大鼠颈部皮下,通过阴道脱落细胞的观察和血清雌二醇（E2）、孕酮（P）的测定了解大鼠内分泌恢复情况,并对移植卵巢及自身子宫进行组织学观察.结果新鲜组和冷冻组分别有52.17%和38.01%的大鼠恢复了动情周期,激素水平分别在移植35 d和49 d恢复到正常水平,移植卵巢明显增大,内可见不同阶段的发育卵泡及黄体,子宫内膜有雌激素效应.结论大鼠胚胎卵巢异体异位无血管皮下移植后能存活、生长发育并具有与正常卵巢相似的内分泌功能.超速冷冻法能较好的保存胚胎卵巢的活性,复苏后与新鲜胚胎卵巢组织具有相同的生理活性.     

大鼠胚胎性腺异体异位埋植的研究

为探讨胚胎性腺(睾丸与卵巢)异体异位埋植后的生长发育和内分泌功能,将大鼠胚胎睾丸和卵巢分别移入摘除性腺的成年雄性和雌性大鼠颈部皮下和肾被膜下.埋植后分不同时间取出埋植物,常规染色观察埋植物在异体异位的生长发育.细胞化学和免疫组织化学法观察埋植物的功能状态.放射免疫法测定血清性激素浓度.结果显示埋植的胚胎性腺在异体可生长发育至成年状,3-β羟甾脱氢酶、性激素与性激素受体在睾丸与卵巢的内分泌细胞中呈阳性反应,血清促性腺激素和性激素在埋植后均有明显增加.     

大鼠胚胎卵巢异体异位移植的探讨

为了研究胚胎卵巢移植后的存活和生长发育情况 ,以及不同移植部位对胚胎卵巢的影响 ,将大鼠胚胎卵巢分别移入去势雌鼠的颈部皮下及肾被膜下 ,HE观察颈部移植物移植后 5d处于坏死状态 ,含有大量红细胞 ;1 0d周围有结缔组织包裹 ,内有原始卵泡 ;2 5d及以后移植物内存在大量发育卵泡并可见间质腺及黄体。肾被膜移植物移植后 5d呈结缔组织样 ;1 0d出现大量原始卵泡结构 ;2 5d及以后可见发育卵泡、间质腺和黄体。细胞化学显示发育卵泡的 3 β羟甾脱氢酶呈阳性反应。移植后 2 5d左右阴道涂片出现动情周期。结果说明胚胎卵巢能在异体异位存活并可发育成具有内分泌功能的腺体。     

肉芽组织内自体移植大鼠卵巢组织卵泡存活的研究

目的:观察卵巢移植后甾体激素分泌和卵泡存活及卵巢组织VEGF和CD31的表达.方法:将未成熟SD雌性大鼠新鲜卵巢组织分别自体移植到下肢根部肌肉内和移植前2～5 d预制的肌层创面肉芽组织内,于移植后17 d回收移植物,做HE染色卵巢卵泡计数及VEGF和CD31免疫组化分析,并用化学发光法测定各组血清中17β-雌二醇(E2)水平.结果:移植卵巢内可见不同阶段的发育卵泡,其中肌层肉芽组织中原始卵泡数明显高于肌肉组,有统计学意义(P＜0.05);肉芽组织组移植物VEGF、CD31表达和E2水平高于肌肉组织组,其中VEGF、E2水平在移植前3d预制的肌层肉芽组织内高于其它各组,有统计学意义(P＜0.05).结论:自体异位移植卵巢组织到具有丰富新生毛细血管的肉芽组织内,可以提高移植卵巢卵泡的存活和激素分泌.     

CTLA4Ig延长同种异体大鼠耳廓移植存活的实验研究

研究CTLA4Ig对异体复合组织移植的免疫抑制作用。方法 :以BN大鼠为供体 ,Lewis大鼠为受体进行异体耳廓移植 ,术后分组应用不同剂量CTLA4Ig治疗 ,观察移植耳廓的排斥反应及存活时间 ,检测术后血清IL - 2含量变化。结果 :对照组平均存活 (7.8± 1.9)d ,CTLA4Ig 0 .1mg/kg·d治疗组存活 (8.1± 1.6 )d ,与对照组比无明显差异 (P >0 .0 5 ) ;1.0mg/kg·d组与 5 .0mg/kg·d组分别为 (15 .5± 2 .3)d与 (2 8.8± 3.6 )d ,异体耳廓的存活时间显著延长 (P <0 .0 1) ,且IL - 2含量较对照组明显下降。结论 :CTLA4Ig能延长异体耳廓复合组织移植后的存活 ,其疗效与剂量相关。     

改良完整卵巢冷冻移植对去势大鼠内分泌功能的影响

目的 探讨改良灌注后完整卵巢冷冻移植对卵巢去势大鼠内分泌功能的影响。方法 选择8～10周龄的健康、雌性清洁级Lewis大鼠30只。10只成熟雌性Lewis大鼠作为供体,获取带蒂完整卵巢进行改良连续导入的精准灌注后冷冻。将20只Lewis大鼠随机分为正常对照组和去势移植组,去势移植组于卵巢去势后1周进行完整卵巢异体原位移植,并于移植前、移植后2周、移植后4周观察大鼠的一般情况、动情周期、血清激素水平改变,于移植后4周检测卵巢组织形态学改变,评估大鼠卵巢内分泌功能。结果 去势移植组在大鼠完整卵巢异体原位移植术后3d体重显著低于正常对照组[(197.1±0.8) g比(201.4±0.6) g,P<0.05];移植第4天后,体重增长显著高于正常对照组[(1.56±0.44) g/d比(1.51±0.52) g/d,P>0.05]。去势移植组大鼠完整卵巢冷冻移植术后(11±2) d恢复正常动情周期。移植前,去势移植组大鼠的卵泡刺激素(follicle-stimulating hormone, FSH)水平显著高于正常对照组,黄体生成素(luteinizing hormone, LH...     

小鼠卵巢玻璃化冻存后异体移植对卵巢衰竭模型鼠卵巢功能的影响

目的研究新鲜与玻璃化冻存幼鼠卵巢异体异位移植对卵巢早衰(POF)小鼠卵巢储备功能的影响。方法以正常小鼠为对照组,使用一次性环磷酰胺150 mg/kg腹腔注射,白消安20 mg/kg皮下注射,建立小鼠卵巢早衰模型,于造模30 d后进行幼鼠新鲜或玻璃化冻存卵巢的肾被膜下移植。通过对移植后30 d各组卵巢组织常规HE染色、血清促卵泡素(FSH)、促黄体生成素(LH)、抑制素B(INHB)、抗苗勒管激素(AMH)变化,观察卵巢玻璃化冻存后异体移植对化学性卵巢功能损伤卵泡储备功能有无挽救作用。结果无论是损伤模型组还是损伤后卵巢移植组,血清FSH、LH浓度明显高于正常对照组(P<0.05),AMH、INHB浓度明显低于正常对照组(P<0.05)。但卵巢移植组与模型对照组比较,各血清激素指标均有所改善,尤其是玻璃化冻存卵巢移植组,血清FSH、LH浓度明显降低(P<0.05),AMH、INHB上升。结论新鲜与玻璃化冻存幼鼠卵巢异体异位移植可以有效改善POF小鼠卵巢功能。     

白藜芦醇对大鼠冻存卵巢组织自体异位移植功能影响的研究

目的:探究白藜芦醇对大鼠冻存卵巢组织自体异位移植功能的影响。方法:选取24只成熟雌性Wister大鼠,并分为空白对照组、移植组、低剂量白藜芦醇组和高剂量白藜芦醇组,每组各6只。移植组、低剂量白藜芦醇组和高剂量白藜芦醇组采用手术摘取卵巢,使用玻璃化冷冻保存2周。低剂量白藜芦醇组和高剂量白藜芦醇组卵巢组织在白藜芦醇溶液中平衡,且在大鼠冻存卵巢组织自体异位移植前、后分别腹腔注射5、10μmol/L白藜芦醇处理,移植组注射等量生理盐水。使用HE染色后光镜下观察卵泡情况,并记录各组大鼠异常卵泡数目百分比。记录各组大鼠月经恢复情况,检测各组大鼠血清内氧化应激相关物质超氧化物歧化酶(SOD)、活性氧基团(ROS)含量水平。分别于第4、8周检测各组大鼠血清激素E2及P的分泌情况。结果:相比空白对照组,移植组异常卵泡数目百分比、ROS含量水平均显著升高,SOD含量及第4、8周大鼠E2及P含量均显著降低(P0.05);相比移植组,低剂量白藜芦醇组和高剂量白藜芦醇组异常卵泡数目百分比、月经恢复时间、ROS含量水平均显著降低,第4、8周E2、P和SOD含量均显著升高(P0.05)。结论:白藜芦醇对大鼠冻存卵巢组织自体异位移植功能恢复有促进作用,同时可以降低大鼠氧化应激反应保护大鼠卵巢。     

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.