穿透性角膜移植术后角膜内皮细胞之命运

地２组猴行５。５→５．０ｍｍ穿透性角膜移植术，异种组４只，同种组４只，术前用冷冻创伤＾３Ｈ－ＴｄＲ标记法标记受生角膜内皮细胞，术后１４周摘除眼球，用放射自显影法显示银颗粒的分布。     

Application of trans-abdominal chorionic villus sampling in prenatal diagnosis of chromosomal diseases in first trimester of gestation

Objective:To evaluate the feasibility and safety of prenatal diagnosis by traneabdominal chorionic villus sam-pling(TA-CVS)via the guidance of B-mode ultrasound in the first trimester of gestation.To explore the technique of long time culture and chromosome preparation of villi in early pregnancy.To evaluate the feasibility of the above techniques in the application of the prenatal cytogenetic diagnosis.Methods:One hundred and thirty-five singleton pregnancies at risk were referred from January 2001 to Decem-ber 2007.Results:The average maternal age was 35.2 years.TA-CVS was performed in the 10～13th weeks of gestation and the average gestational age was 10.89 weeks.All attempts at sampling were successful.The rate of operation-associated fetal loss was 0.74%.The failure rate of prenatal diagnosis because of inadequate amount of specimen was 0.The average culture time was 5-7 days.The success rate of the cell culture was 98.5%.No maternal con-temination and bacterial contamination happened.Fifteen cases of abnormal karyotype and one case of confined pla-cantel mosaiciem were diagnosed.Conclusion:TA-CVS appears to be safe and feasible and might to be offered in the prenatal diagnosis in the first trimester of gestation.The technique of long time culture and chromosome preparation of villi is stable and reliable.It is feasible to apply these techniques in the clinical practice of prenatal cytogenetic diagnose in the early pregnancy.     

腹腔镜治疗妇科急症593例临床分析

目的:探讨腹腔镜治疗妇科急症的可行性、安全性及治疗效果。方法:回顾分析2003年7月至2007年10月我院用腹腔镜治疗593例妇科急症患者的临床资料。结果:593例患者均用腹腔镜完成手术,其中异位妊娠512例,手术时间18～75min,平均32min,术中出血10～70ml,平均25ml;盆腔炎、盆腔脓肿47例,手术时间35～90min,平均49min,术中出血45～130ml,平均84ml;黄体破裂、卵巢内膜囊肿破裂、卵巢囊肿蒂扭转34例,手术时间35～80min,平均52min,术中出血20～85ml,平均65ml;术后住院3～7d,平均4.5d,随访12～36个月无复发。结论:腹腔镜手术治疗妇科急症安全可行,且具有良好的效果。     

Reversible Verbal and Visual Memory Deficits after Left Retrosplenial Infarction

The retrosplenial cortex is a cytoarchitecturally distinct brain structure located in the posterior cingulate gyrus and bordering the splenium, precuneus, and calcarine fissure. Functional imaging suggests that the retrosplenium is involved in memory, visuospatial processing, proprioception, and emotion.We report on a patient who developed reversible verbal and visual memory deficits following a stroke. Neuropsychological testing revealed both anterograde and retrograde memory deficits in verbal and visual modalities. Brain diffusion-weighted and T2-weighted magnetic resonance imaging (MRI) demonstrated an acute infarction of the left retrosplenium.     

下颌第一磨牙三维有限元模型的建立

目的：建立下颌第一磨牙三维有限元模型。方法：通过螺旋CT扫描的方法，利用Mimics、Geomagic Studio 7等图像处理软件，HyperMesh网格自动划分软件，通过特定的MSC．MARC有限元软件建立下颌第一磨牙三维有限元模型。结果：准确的建立了牙本质、牙釉质、髓腔、牙槽骨、牙周膜等组织形态的三维有限元模型。结论：本实验建模方法可行性强，方便快捷，具有良好的生物力学与几何力学相似性。为临床口腔医师提供了一种简捷而精确的有限元建模方法。     

阶梯状分离法在睑袋整形术中的应用

目的：在传统睑袋整形术式分离层次的基础上进行改进，以便获得更佳的术后矫治效果，减少术后并发症。方法：在切口下缘皮下轮匝肌表面分离5-10mm，顺肌纤维走行方向由外向内剪开轮匝肌，在眶隔浅面分离轮匝肌肌皮瓣达眶缘，在眶骨表面分离轮匝肌的附着及外眦部肌肉，皮下悬吊固定于外眦眶缘骨膜上，观察手术效果。结果：术后通过3-6个月随访无一例出现睑球分离、睑外翻、下睑退缩、外眦下垂、眼袋复发等并发症。结论：阶梯状分离法是睑袋整形术中的技术改进，术后效果确切、可靠。     

亚麻子对鸡蛋黄及鸡体内DHA含量的影响

为了研究亚麻子对鸡蛋黄以及鸡体内二十二碳六烯酸 (DHA)含量的影响 ,用添加亚麻子的饲料喂养蛋鸡(剂量组 ) 1 0周后 ,用气相色谱法检测鸡蛋黄和鸡体内DHA的含量。结果显示 ,与对照组相比 ,剂量组鸡蛋黄中α 亚麻酸 (ALA)和DHA的含量呈明显上升趋势 ,并发现剂量组蛋鸡的肝脏、脑中DHA含量也相应增加。提示亚麻子对于开发新型的保健食品具有一定价值     

嘌呤霉素肾病大鼠肾小球中nephrin、Podocin和α-actinin与蛋白尿的关系

目的动态观察肾小球足细胞及裂孔隔膜分子nephrin,podocin和α-actinin在嘌呤霉素(puromycinaminonucleoside,PAN)大鼠肾病模型肾组织中表达的时相变化,探讨这些分子间及这些分子与蛋白尿发生的关系。方法用间接免疫荧光染色及实时定量PCR方法,检测PAN注射后12h、1d、36h、2d、5d、10d、15d及20d大鼠肾小球中nephrin,podocin和α-actinin分子分布和表达。结果(1)PAN注射后1d、2d及5d时,尿蛋白量无明显改变;10d时尿蛋白量明显增加(P=0.02);20d时恢复至对照组水平。(2)对照组大鼠肾小球中nephrin和podocin沿肾小球毛细血管袢呈连续线状分布,α-actinin沿肾小球毛细血管袢呈点线状分布。PAN注射1d后,nephrin和podocin的分布即发生改变,表现为断续、非线性分布。nephrin和podocin的分布改变随着尿蛋白的增多而加重,尿蛋白恢复时也逐渐恢复。20d时,α-actinin沿肾小球毛细血管袢呈连续线性分布。(3)免疫荧光定量分析结果表明,在PAN注射后36h(P=0.04)、2d(P=0.03)及5d(P=0.04)时,肾小球中podocin的免疫荧光染色强度明显下降,于第10d降至最低(P=0.006);自15d时逐渐恢复(P=0.007),20d后podocin的免疫荧光强度恢复至对照组水平。nephrin的免疫荧光染色强度在PAN注射第5天后出现下降(P=0.002),持续下降至第10天(P=     

高效液相梯度洗脱法测定血清中氢化可的松和可的松的含量

目的　测定血清中氢化可的松和可的松的比值以反映人体肝脏 1 1 β -羟类固醇脱氢酶的活性 ,为其研究提供一个有效的分析手段。方法　HPLC -UV法 ,梯度洗脱 ,内标定量。结果　血清中氢化可的松在 50～ 2 0 0μg·L-1 、可的松在 1 0～ 50 μg·L-1 范围内其线性回归方程分别为Y =- 0 .42 5 +0 .0 1 0X、Y =- 0 .1 63 +0 .0 50X ,相对回收率分别为 (1 0 2 .5± 3 .6) %、(97.6± 6 .0 ) %。 82名健康志愿者血中氢化可的松和可的松的浓度分别为 (1 32 .2± 44 .5) μg·L-1 和 (1 9.7± 5 .0 ) μg·L-1 ,其比值为 6 .89± 2 .2 6。结论　本法操作简便、灵敏可靠 ,符合人体血样糖皮质激素测定的要求