同型半胱氨酸与冠状动脉病变关系的初步探讨

目的　探讨血浆同型半胱氨酸 (Hcy)水平与冠状动脉病变支数的关系 ,以及其与急性心肌梗死 (AMI)、不稳定性心绞痛 (UA)之间的关系。方法　采用全自动酶化学发光法对 82例行选择性冠状动脉造影术的患者进行血浆Hcy测定。根据冠状动脉造影结果分组 :正常对照组 2 5例 (包括 3例临床诊断为AMI的患者 ) ,单支血管病变组 2 3例 ,双支血管病变组 18例 ,3支血管病变组 16例 ;根据临床诊断分组 :AMI组 36例、UA组 2 4例 (两组冠状动脉病变支数无差异 )和非冠心病组 2 2例。结果　① 3支病变组的Hcy为 (2 5 .14± 11.78) μmol/L ,2支病变组为 (19.6 2± 7.0 4) μmol/L ,单支病变组为 (18.43± 7.16 ) μmol/L ,3组均显著高于正常对照组的 (14.0 6± 2 .5 4) μmol/L(P值均 <0 .0 1)。②AMI组的Hcy为(2 0 .0 7± 7.72 ) μmol/L ,UA组为 (2 0 .6 2± 10 .6 3) μmol/L ,均显著高于非冠心病组的 (14.2 3± 2 .6 3) μmol/L(P值均 <0 .0 1) ;UA组的Hcy略高于AMI组 ,但差异无显著性 (P =0 .41)。 结论　血浆Hcy升高是冠心病的危险因素。其增高不仅与冠状动脉病变支数呈正相关 ,而且与冠状动脉病变的活动显著相关 ,进一步提示增高的血浆Hcy与冠心病心肌缺血事件的发生密切相关。     

98例维吾尔族冠心病患者血浆同型半胱氨酸水平变化的临床特点

目的研究维吾尔族冠心病患者血浆中同型半胱氨酸(Hcy)水平变化的临床特点及叶酸、维生素B12水平的关系.方法采用酶联免疫法测定98例冠心病患者(冠心病组)和58例正常人(正常对照组)血浆Hcy、叶酸、维生素B12水平.结果冠心病组血浆Hcy水平(15.882±8.488 μmol/L)明显高于正常对照组(11.462±3.038 μmol/L),有显著差异(P<0.05),高Hcy血症所占比例(40.8%)高于正常对照组(13.8%),有非常显著差异(P<0.001).冠心病组男性血浆总Hcy水平(16.527～9.094 μmol/L)明显高于正常对照组男性(12.584±4.551umol/L),有显著差异(P<0.05),而在冠心病组女性(13.5813±6.0326 μmol/L)和正常对照组女性(12.29±6.087μmol/L)之间没有差异.冠心病组男性血浆叶酸水平(4.7206±1.609 ng/ml)明显低于正常对照组男性(5.813±2.013 ng/ml),有显著差异(P<0.05),且与血浆总Hcy水平呈负相关(r=-0.024,P<0.05),而女性无差异.结论新疆地区维吾尔族冠心病患者血浆总Hcy水平明显高于正常人,高Hcy血症所占比例较大,而Hcy对冠心病患者的影响主要在男性可能更为明显,并且血浆叶酸水平与其呈负相关.     

冠状动脉粥样硬化患者血浆同型半胱氨酸测定的临床意义

目的 :探讨血浆同型半胱氨酸水平测定在冠状动脉粥样硬化患者中的临床意义。方法 :应用荧光偏振免疫分析技术 ,测定 6 8例健康人和 85例冠状动脉粥样硬化患者血浆同型半胱氨酸 (Hcy)水平。结果 :血浆 Hcy水平正常对照组为 (9.31± 3.80 )μmol/L ,其中男性 (10 .5 0± 4 .0 7)μmol/L ,女性 (7.80± 2 .85 )μmol/L,男性明显高于女性 (P<0 .0 0 1) ;冠状动脉粥样硬化患者 (13.39± 6 .0 6 ) μmol/L,其中男性 (13.77± 6 .6 8) μmol/L,显著高于健康男性 (P<0 .0 0 1) ;女性 (11.5 0± 3.5 8) μmol/L,显著高于健康女性 (P<0 .0 0 1)。血浆 Hcy水平随冠脉病变严重程度呈上升趋势 ,冠脉不典型狭窄组 (11.36± 3.86 ) μmol/L,1支病变组 (13.32± 6 .0 9) μmol/L,2支病变组 (13.39±4 .92 ) μmol/L,3支病变组 (18.2 3± 8.98) μmol/L。结论 :冠状动脉粥样硬化患者存在高同型半胱氨酸血症 ,对于冠心病的诊断和治疗有重要价值。     

新疆汉族冠心病患者血浆同型半胱氨酸水平变化的临床特点

目的研究新疆汉族冠心病患者血浆中同型半胱氨酸(Hcy)水平变化的临床特点及与叶酸、维生素B12水平的关系.方法采用酶联免疫法测定167例冠心病患者(冠心病组)和87例正常人(正常对照组)血浆Hcy、叶酸、维生素B12水平.结果冠心病组血浆Hcy水平(16.536±8.402μmol/L)明显高于正常对照组(10.844±6.348μmol/L),有显著差异(P＜0.01),高Hcy血症所占比例(53.29%)高于正常对照组(14.94%),有显著差异(P＜0.01).冠心病组男性血浆总Hcy水平(17.920±8.404μmol/L)明显高于正常对照组男性(12.846±7.537μmol/L),有显著差异(P＜0.01),而在冠心病组女性血浆总Hcy水平(13.643±7.697μmol/L)明显高于正常对照组女性(8.598±3.6μmol/L),有显著差异(P＜0.01).正常对照组男性血浆叶酸水平(6.607±2.73ng/ml)明显低于正常对照组女性(9.513±4.994ng/ml),有显著差异(P＜0.01),冠心病组男性血浆叶酸水平(6.014±2.904ng/ml)明显低于冠心病组女性(7.674±4.562ng/ml),有显著差异(P＜0.01).结论新疆地区汉族冠心病患者血浆总Hcy水平明显高于正常人,高Hcy血症所占比例较大,而Hcy和叶酸水平在男、女性别之间存在明显差异.     

血浆同型半胱氨酸水平与急性心肌梗死的关系

目的　探讨血浆同型半胱氨酸 (Hcy)水平与急性心肌梗死 (AMI)之间的关系。方法　应用高效液相色谱仪测定血浆Hcy水平 ,对 50例确诊急性心肌梗死患者与 50例正常对照者进行比较分析。结果　AMI组和对照组血浆Hcy水平分别为 (1 6 73± 4 0 1 ) μmol/L和 (1 0 87± 2 95) μmol/L ,两者差异有显著性 (P <0 0 5)。在 37例行冠状动脉造影的AMI患者中 ,多支病变组 (≥ 2支血管病变 )的血浆Hcy水平显著高于单支病变组 [(1 7 2 5± 4 .86) μmol/Lvs (1 2 .2 3±5 1 7) μmol/L ,P <0 0 5]。 结论　高Hcy血症可能是AMI的一种独立危险因素 ,且冠脉病变越严重 ,血浆Hcy水平越高。     

川东北地区汉族人群血同型半胱氨酸与冠心病的相关性研究

【摘要】 目的 探讨川东北地区汉族人群血浆同型半胱氨酸（Hcy）水平与冠心病的相关性。方法 选取2013年3月～2014年8月在南充市中心医院心内科住院且生活在川东北地区的汉族人群431例为研究对象,根据临床症状、心电图表现、心肌酶学及其冠状动脉造影结果分为冠心病组221例和对照组210例,比较两组之间Hcy水平差异。结果 冠心病组平均血浆Hcy水平为（1539±689) μmol/L,对照组为(1290±644) μmol/L,冠心病组显著高于对照组（P＜005）,Hcy在两组之间比较OR值为1060 (95%CI 1021～1100,P＜005)。冠状动脉不同病变血管支数之间比较 ,1支血管病变患者平均血浆Hcy水平为(1387±499) μmol/L,2支血管病变患者平均血浆Hcy水平(1581±814) μmol/L,3支血管病变患者平均血浆Hcy水平为(1774±715) μmol/L,血浆 Hcy 水平在 1、2、3 支血管病变患者中呈逐渐增高趋势,其中1支血管病变患者与3支血管病变患者差异有统计学意义（P＜005）。冠心病不同临床类型之间比较,稳定型心绞痛患者平均血浆Hcy水平为(1236±45) μmol/L,不稳定型心绞痛患者为(1490±629) μmol/L,缺血性心肌病患者为(1539±680) μmol/L,急性心肌梗死患者为(1649±766) μmol/L,其中急性心肌梗死与稳定型心绞痛比较,差异有统计学意义（P＜005）,其余患者间比较差异无统计学意义(P＞005)。结论 同型半胱氨酸（Hcy）是川东北地区汉族人群冠心病发病的独立危险因素。     

血浆同型半胱氨酸与2型糖尿病大血管并发症的关系探讨

目的 :探讨血浆总同型半胱氨酸 (Hcy)水平与 2型糖尿病大血管并发症之间的关系。方法 :用酶联免疫法测定了 30例正常人和 78例 2型糖尿病患者 (其中有大血管并发症患者 38例 )的血浆Hcy水平。结果 :对照组血浆Hcy水平为 (11.97± 3.9) μmol/L。 2型糖尿病无大血管并发症者Hcy水平为 (2 1.8± 7.98)mol/L。2型糖尿病有大血管并发症者Hcy水平为 (19.8± 7.98) μmol/L。统计学结果表明对照组、2型糖尿病无大血管并发症组及有大血管并发症组之间Hcy水平有显著性差异 (P <0 .0 1,P <0 .0 0 1)。结论 :高血浆Hcy水平与 2型糖尿病及 2型糖尿病大血管并发症有一定的相关性。     

深静脉血栓病人血浆同型半胱氨酸水平探讨

目的 :研究血浆同型半胱氨酸 (Hcy)水平 ,探讨高同型半胱氨酸血症与深静脉血栓 (DVT )形成的关系。方法 :采用荧光偏振免疫法 (FPIA)测定 78例深静脉血栓病人和 95例健康对照者的血浆同型半胱氨酸 (Hcy)水平。结果 :空腹状态深静脉血栓组血浆同型半胱氨酸水平为 (13 .1± 7.6) μmol L ,明显高于对照组 (10 .6± 4.2 ) μmol L(P <0 .0 5)。蛋氨酸负荷试验后深静脉血栓组血浆同型半胱氨酸水平为 (41.6± 14 .8) μmol L ,显著高于对照组 (3 5.3± 13 .9) μmol L(P <0 .0 5)。轻中度升高的血浆同型半胱氨酸水平增加了深静脉血栓形成的危险性 (禁食后比数比OR =2 .995%CI 1.1～ 9.7;蛋氨酸负荷试验后比数比OR =3 .595%CI 1.3～ 10 .8)。结论 :血浆同型半胱氨酸水平与深静脉血栓形成密切相关 ,高同型半胱氨酸血症 (HHcy)是深静脉血栓形成的一个独立危险因子     

内皮素/一氧化氮系统失调在妊高征发病中的作用

目的 :观察妊高征患者血浆一氧化氮 (NO)和内皮素 (ET)含量的变化并探讨其在妊高征发病中的意义。方法 :应用镉柱比色法和放射免疫法分别对 43例妊高征患者 (妊高征组 )、36例正常妊娠妇女 (对照组 )和 19例正常非孕妇 (正常组 )血浆中NO代谢产物亚硝酸盐 /硝酸盐 (NO-2 /NO-3 )及ET - 1含量进行了检测。结果 :正常妊娠妇女血浆中NO-2 /NO-3 含量 (34.2 9± 10 .15 ) μmol/L明显高于非孕正常组妇女 (11.98± 3 .99)μmol/L ,并随孕周的增加而增加 ,孕中期达高峰 (39.45± 9.16 ) μmol/L ,到孕晚期有所下降 (31.42± 7.86 5 )μmol/L。血浆中ET的含量有所上升 ,但与非孕正常组妇女相比则没有显著差异 (P >0 .0 5 ) ;与正常晚期妊娠对照组相比 ,轻、中度妊高征妇女血浆中NO-2 /NO-3 含量虽有所上升 ,但没有明显差异 (P >0 .0 5 ) ,而重度妊高征妇女则有明显上升 (P <0 .0 5 )。妊高征妇女血浆ET含量 (96 .0 5± 13 .5 7)ng/L与正常晚期妊娠妇女(36 .48± 6 .17ng/L)相比有极显著的上升 (P <0 .0 1) ,并且与妊高征的严重程度成正比 (r =0 .5 2 ,P <0 .0 1) ,ET/NO比值 (2 .47)明显大于正常晚期妊娠对照组妇女 (1.13,P <0 .0 5 )。结论 :妊高征患者内皮细胞损伤导致ET/NO系统平衡失调可能在妊高征的发病机     

肝硬化患者血浆抗坏血酸和维生素E的测定

目的 :探讨肝硬化患者血浆抗坏血酸和维生素 E的水平及其意义。方法 :测定 6 3例肝硬化患者和 6 3例年龄及性别配对的正常人血浆抗坏血酸 ,维生素 E和过氧化脂质的含量。结果 :肝硬化组血浆抗坏血酸含量为( 42 .94± 6 .99)μm ol/ L ,明显低于对照组 ( 53.30± 9.4 5)μm ol/ L ( t=9.50 ,P =0 .0 0 0 ) ;肝硬化组血浆维生素 E含量为 ( 17.99± 3.51) μm ol/ L,明显低于对照组 ( 2 4 .59± 7.2 2 ) μm ol/ L( t=7.94 ,P=0 .0 0 0 ) ;肝硬化组血浆过氧化脂质含量为 ( 14 .0 9± 1.2 8) μm ol/ L,明显高于对照组 ( 12 .11± 1.2 0 ) μmol/ L( t=17.2 1,P=0 .0 0 0 )。而且肝硬化患者的三个指标之间均有良好的相关性 ( P=0 .0 0 0 )。结论 :肝硬化患者血浆抗坏血酸和维生素 E水平显著下降 ,体内氧化和抗氧化系统失衡。     

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.