错畸形患者的Howes值测量分析

目的:本研究采用Howes法评估牙弓骨量与牙量的协调性,探讨其在正畸临床诊断与矫治设计确定拔牙与非拔牙中的应用价值。方法:选取第四军医大学口腔医学院正畸门诊患者80人,男、女拔牙与非拔牙各20例。测量牙量(TM)、双尖牙弓宽径(PMD)、双尖牙根尖基骨宽径(PMBAW)、基骨弓长度(BAL),并计算PMD/TM、PMBAW/TM、BAL/TM值,对其进行统计学处理与分析。结果:男女两组比较TM、PMD、PMBAW、BAL值有显著性差异,男性大于女性;但PMD/TM、PMBAW/TM、BAL/TM值无统计学意义;拔牙组与非拔牙组比较,PMD/TM、PMBAW/TM、BAL/TM值有显著性差异。结论:采用Howes法评估牙弓骨量与牙量对正畸临床的诊断和拔牙与非拔牙矫治设计有一定的指导意义。     

阻塞性睡眠呼吸暂停综合征患者手术治疗的麻醉研究

目的：探讨阻塞性睡眠呼吸暂停综合征(obstructive sleep apnea syndrome，OSAS)患者手术治疗的麻醉处理。方法：72例OSAS患者手术前先正压通气治疗(continue positive airway pressure，CPAP)和评价上气道，55例患者经鼻或经口气管插管全身麻醉；在手术完毕患者完全清醒后拔除插管。结果：72例患者中，轻度16例、中度24例、重度32例。合并晨起高血压28例，心电图均有不同程度心肌缺血的表现；红细胞增多症12例；腭咽平面Ⅰ级9例、Ⅱ级24例、Ⅲ级的27例、Ⅳ级12例。术前3．5d行自动调压正压通气治疗(Auto—CPAP)，经口气管内插管48例，经鼻气管内插管6例，均无术中插管困难和术后高血压危象，呼吸道梗阻发生。结论：充分认识OSAHS患者全身麻醉的手术风险，术前CPAP治疗和上气道评估，术中正确处理、严格掌握气管内插管、术后拔管的时机，是保证OSAHS患者手术成功、麻醉安全的关键。     

Computerized tomography based on DEI refraction information.

Conventional computerized tomography (CT) technique is based on the absorption contrast. In recent years, X-ray phase-contrast CT (PCCT) has been developing rapidly. It uses the phase information to reconstruct the object and provide high contrast and spatial resolution. Diffraction enhanced imaging (DEI) method is one of the three phase-sensitive X-ray imaging techniques. DEI method employs an analyzer crystal to extract the object's refraction information which can be used for CT. However, when DEI refraction CT is combined with the conventional CT algorithm, it should be satisfied that the refraction information of an arbitrary point in the object is invariable at every projection view. In this paper, the invariance condition of refraction information is analyzed and two feasible methods are provided for reconstruction. Using these two methods, two samples of weak absorption are reconstructed with the experimental data obtained at Beijing Synchrotron Radiation Facility (BSRF).     

用酶联免疫吸附术观察向附睾注射鱼肝油酸钠后抗精子抗体的变化

本研究用酶联免疫吸附术观察8只家兔在附睾注射鱼肝油酸钠后血清及精浆中的抗精子抗体。血清抗精子抗体阳性率为37.5～50.0%,最早检出率为术后2个月,6～7月达高峰。精浆抗精子抗体阳性率为25%,最早检出率为术后4个月,且此时己达高峰。与输精管结扎资料相比,发现血清抗精子抗体检出率偏低,而精浆相应抗体偏高,表明向附睾注射鱼肝油酸钠引起的免疫反应有别于结扎,以生殖道局部为主。     

HLA-DM基因夫妇共享率与子痫前期相关性

目的:探讨HLA-DM基因夫妇共享率与子痫前期的相关性。方法:用PCR-SSO方法分别测定30对子痫前期患者夫妇及63对正常孕妇夫妇的HLA-DM基因型。结果:夫妇共享等位基因数为2个时,子痫前期组的例数明显多于正常妊娠组,差异有显著性(P﹤0.05);HLA-DM的各等位基因型在子痫前期组夫妇共享率与正常妊娠组夫妇共享率差异无显著性。结论:夫妇共享HLA-DM基因数与子痫前期发病有关。     

大鼠腹裂模型肠管损伤的研究

目的研究先天性腹裂的肠管受损害情况，探讨该病术后并发症的原因。方法利用大鼠腹裂模型，运用组织学、生化学和免疫组织化学方法，分析腹裂胎鼠肠管的组织结构，DNA和蛋白质，细胞增生和凋亡等方面的改变。结果共获得腹裂胎鼠16只，对照胎鼠21只。与对照组相比，腹裂鼠肠管变短、充血水肿、粘连，肠壁表面纤维覆盖，壁内胶原沉积，DNA总量下降，蛋白质总量基本不变，细胞增生率下降，凋亡率上升。结论腹裂的肠管损伤是多方面的，是术后肠管运动和吸收功能异常的原因，大鼠的腹裂模型是对先天性腹裂的病因、病理等方面研究的合适工具。     

妇科疾病中人乳头瘤病毒感染的分子流行病学调查

目的:探讨各种妇科疾病与人乳头瘤病毒感染的关系,建立不同妇科疾病和不同年龄段妇女人乳头瘤病毒感染的流行病学资料库。方法:应用反向点杂交技术分别对疾病组1 512例病人标本和正常组500例标本进行HPV检测,所得数据用SPSS 13.0软件包进行统计分析。结果:正常组500例标本中,阳性标本101例,感染率为20.2%,疾病组1 512例标本中,阳性标本523例,感染率为34.6%,其中双重感染82例,占阳性标本的15.7%,多重感染34例,占阳性标本的6.5%,而高危感染340例,感染率为22.5%,占阳性标本的65.0%,其中单纯HPV16亚型感染155例,占所有阳性标本的29.6%;不同年龄段、不同性生活史、不同妇科疾病以及不同首次性生活年龄的HPV感染检出率都有显著性差异。结论:正常组和疾病组的HPV感染率有显著性差异(2χ=36.37,P<0.01)。在HPV感染的普查中可以有重点的选择高危人群,这样更加有针对性,从而大大降低普查成本。     

Multiple steroid hormone levels in depressed patients and normal controls before and after exogenous ACTH

Forty depressed patients and 36 age- and sex-matched controls were given 250 μg ACTH_1–24 by bolus. Plasma steroid hormone levels were measured prior to and 60 min after ACTH administration. The depressed patients had significantly greater cortisol (F), 11-deoxycortisol (S), androstenedione (AD), and 17-hydroxyprogesterone (17-OHP) responses (delta; p<0.05) and a marginally greater 11β-hydroxyandrostenedione (11β-OHAD) response (delta; p=0.091) than the controls. There was no significant difference in the corticosterone (B) response between the two groups.

With the exception of 11β-OHAD, all the steroid hormones were significantly negatively correlated with age in the controls, but only S and AD marginally demonstrated this relationship in the depressed patients. F, S, AD, 17-OHP, and B, but not 11β-OHAD, were significantly positively correlated with each other in the controls, but only F was significantly correlated with AD in the depressed patients. These data suggest that the hypercortisolemia found in some depressed patients involves increased precursor and metabolite levels both at baseline and in response to exogenous ACTH, compared to controls. Furthermore, variability in these precursors is greater in depressed patients, and their relationship to age is lost. These findings are consistent with the hypothesis that adrenal products other than cortisol also could be related to affective symptoms.     

子宫内膜异位症患者血清中靶抗体的检测和应用

目的 :建立一种ELISA方法 ,以检测子宫内膜异位症患者血清中抗转铁蛋白抗体。　方法 :用转铁蛋白包被的间接ELISA方法检测血清中的抗转铁蛋白抗体。血清标本来自 96例正常体检女性 ,6 4例妊娠妇女 ,72例儿科女童 ,以及 2 4例子宫内膜异位症患者。　结果 :子宫内膜异位症患者血清中的抗转铁蛋白抗体阳性率远远高于对照组 ,特异性为 99.0 % ,敏感度为 95 .8% ,准确性为 99.2 %。　结论 :子宫内膜异位症患者血清抗转铁蛋白抗体阳性率明显高于对照组 ,抗转铁蛋白抗体检测可作为子宫内膜异位症的非创伤性诊断方法     

我校资产管理网络化的初步实现

1背景随着国家对教育投入逐年增加,特别是近年来重大科研项目如211工程、985项目等大批经费用于设备添置,学校固定资产急剧膨胀。同时高校规模不断拓展,综合性高校拥有2个以上校区的情况非常普遍。在这种情况下沿用旧的单机管理模式,