广西毛南族农村妇女铁营养状况调查

对450名广西环江县毛南族农村育龄妇女进行血清铁蛋白(SF)、红细胞游离原卟啉(FEP)及血红蛋白(Hb)3项铁指标测定.结果发现:铁缺乏症患病率为27.8%(其中ID4.2%,IDE 7.8%,IDA 15.8%).随着孕次或产次的增加,血红蛋白水平逐渐下降,铁缺乏症患病率逐渐增高.有妊娠或分娩史的妇女与未孕或未生育的妇女血红蛋白水平与铁缺乏症患病率比较均有显著性差异(P<0.05).     

叶内型肺隔离症致咯血的栓塞治疗

目的探讨叶内型肺隔离症患者咯血的栓塞治疗效果。方法结合文献复习，回顾性分析6例叶内型肺隔离症患者血管造影表现，并对畸形动脉行栓塞治疗。结果6例叶内型肺隔离症患者血管造影显示畸形动脉7支，表现为粗大、迂曲的体循环血管影；在毛细血管期可见隔离肺叶染色及引流静脉早显；静脉期显示引流静脉（肺静脉）。6例患者均进行畸形血管栓塞治疗，临床止血总有效率100％，随访1a均未复发。结论畸形血管栓塞术对叶内型肺隔离症致咯血的治疗，安全有效。     

HPLC法测定七味清咽气雾剂中苦参碱的含量

目的：用HPLC测定七味清咽气雾荆中苦参碱的含量。方法：采用高效液相法，使用Shim-pack VP-ODS色谱柱，以乙腈珈．2％三乙胺溶液（1．4：98．6）用磷酸调至pH为2．5，柱温为55℃，流速为0．7mL／min，检测波长为214mn。结果：苦参碱在64．4～1030μg范围内呈良好的线性关系（r=0．9997），回收率为98．6％，RSD为0．9％。结论：方法灵敏、准确、专属性强，回收率高，重现性好，可作为七味清咽气雾剂的质量标准。     

犬海水中火器伤后早期血流动力学变化

OBJECTIVE: To investigate the hemodynamic changes in the early stages of gunshot wound of dogs in seawater for exploring early treatment protocol. METHOD: Fourteen conventional Beagles models undergoing gunshot wound in seawater were used along with another 2 dogs receiving the wound on land to serve as control. After the dogs were rescued from the seawater, the respiration (R), heart rate (HR), systolic blood pressure (SBP), diastolic blood pressure (DBP), mean arterial pressure (MAP), central venous pressure (CVP), pulmonary arterial wedge pressure (PAWP), and cardiac output (CO) were measured continuously in the early stages of the wound (53.62+/-12.19 min following injury), followed by statistical analysis of the results. RESULTS: Compared with the control group, the hemodynamic disturbance of the dogs receiving the wound in seawater was relatively severe during the first 15 min of the wound. The mortality tended to descend relevant to the position of the wounds, in the order of the head, chest, abdomen and limbs. CONCLUSIONS: Gunshot wound in seawater may cause severe hemodynamic changes, resulting in progressive dysfunction of circulation and high mortality rate. Early treatment should be targeted at hemodynamic stabilization in accordance to the characteristic changes during the early stages of the wound.     

四甲基联苯胺在ELISA和免疫斑点试验中的应用

本文以间接法ELISA检测轮状病毒特异性IgG为模型,对新底物四甲基联苯胺(TMB)与邻苯二胺(OPD)进行了比较研究,结果发现,TMB具有下列优点:①稳定性好;②敏感性高;③酶结合物和H_2O_2用量少。而且TMB又无致癌性,故是辣根过氧化酶较理想的底物。此外,还首次将TMB应用于免疫斑点试验,获得成功。     

Directed differentiation of Balb/C mouse embryonic stem cells into pancreatic islet-like cell clusters in vitro: observation by atomic force microscope]

OBJECTIVE: To observe the morphological changes of Balb/C mouse embryonic stem cells following directed differentiation into pancreatic islet-like cell clusters (PICC) in vitro using atomic force microscope (AFM). METHODS: Balb/C mouse embryonic stem cells were first cultured into embryonic bodies (EBs) and allowed to differentiate spontaneously for 4 days. The cells were then transferred to gelatin-coated dishes for the EBs to attach and spread on the tissue culture plates, in the course of which a series of cell growth factors such as basic fibroblast growth factor (bFGF), insulin-like growth factor 1 (IGF-1) and nicotinamide were added into the culture medium at specific time points to induce directed differentiation of the stem cells into PICC. Immunocytochemistry was employed to detect the cells positive for insulin and glucagon, which were observed with AFM. RESULTS: The embryonic stem cells developed into cell clusters of different sizes, in which the cells were tightly arranged. Islet B cells were numerous in the center of clusters and darkly stained, but fewer in the peripherals with lighter stains. Islet A cells expressing glucagon were relatively fewer in the cell clusters, found mainly in the peripherals. Scanning of the insulin-positive clusters by AFM revealed large quantity of tissue fibers resembling nerve fibers that formed a reticular structure in disorderly arrangement. Numerous round granules were observed in the cytoplasm of almost identical sizes ranging from 0.5 to 1.0 mum in diameter. CONCLUSION: The cell clusters obtained by directed differentiation are mature in both morphology and function with also well organized structures.     

改良气囊导尿管内固定方法的临床探讨

目的探讨改良气囊导尿管的内固定方法，减轻患者的不适感，增加尿管留置成功率。方法将150例需留置导尿管的患者随机分为A、B、C3组，常规导尿成功后，A组向气囊内注入生理盐水12ml；B组向气囊内注入空气12ml；C组向气囊内注入生理盐水和空气各6ml，于24h后采用自制问卷调查患者不舒适的程度，并在1周后统计置管的成功率。结果A组Ⅱ度以上不舒适38例，留置失败1例，失败率为2．0％；B组Ⅱ度以上不舒适5例，留置失败12例，失败率为24．0％；C组Ⅱ度以上不舒适5例，留置失败2例，失败率为3．9％。满意度B组与C组比较差异无统计学意义，A组与B组和C组比较差并均有统计学意义（P〈0．01）。失败率A组与C组比较差异无统计学意义（P=0．3864），B组与A组和C组比较差异有统计学意义（P〈0．01）。结论3组从舒适的角度和留置成功率全面比较C组的方法优于A、B两组，留置气囊导尿管时向气囊内注入生理盐水和空气各6ml是内固定最佳的方法，在临床上是可行的。     

人体尺神经显微结构三维可视化研究

目的 将人体尺神经行连续冰冻组织切片,经染色、扫描后获取尺神经连续断面二维图像信息,通过3D Nerve三维可视化软件系统勾画出完整的尺神经干三维解剖图谱.方法 取自愿捐献死亡3 h内38岁男性左侧尺神经全长(自臂丛内侧束至腕横韧带)标本1例,长约50cm,经定位、包埋、连续冰冻组织切片、乙酰胆碱脂酶组织化学染色,获取尺神经连续二维图像信息,应用3D Nerve三维可视化软件系统对尺神经内部结构进行三维重建.结果 尺神经在不同断面神经束的数量、位置及内部神经纤维的性质均有变化.应用尺神经3D Nerve三维可视化软件系统可在任意断面、任意角度观察尺神经内部的显微结构,追踪各神经束的立体行径,动态地展示尺神经内部神经束的复杂结构.结论 尺神经的3D Nerve三维可视化软件系统可真实地再现尺神经干全长及其内部各神经束的三维立体行径,为医学教学与临床修复尺神经损伤提供精确的神经任意断面三维立体解剖图像,有助于提高神经修复的疗效.