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1.
胎儿主要肢骨发育时间表──超声骨龄 总被引:1,自引:0,他引:1
用B超检测正常妊娠中的胎儿。选择受精龄为12至38整周(completedweek)的胎儿297例。测量其主要肢骨(干)长度。并将所测数据进行统计学处理。结果表明胎儿肢骨的生长发育与胎龄有显著的正相关关系。 相似文献
2.
作者用红细胞C_3b受体花环试验和红细胞免疫复合物花环试验对马桑内酯所致癫痫发作大鼠红细胞免疫粘附功能的变化进行了观察,结果表明,癫痫组动物红细胞C_3b受体花环率明显低于对照组,而红细胞免疫复合物花环率相差不显著.提示癫痫发作可导致大鼠红细胞免疫粘附功能降低,因此在癫痫治疗中注意调整和增强患者的红细胞免疫功能具有重要意义。 相似文献
3.
作者合成了13个对-苯二甲酸衍生物,其中有9个化合物尚未见文献报道。通过对HL-60细胞诱导分化活性试验,发现有两个化合物在浓度为5×10 ̄(-6)mol/L时,可使细胞分化率达55%,低于维A酸的分化率(79%,10 ̄(-7)mol/L)。 相似文献
4.
本实验将赖型钩端螺旋体(简称钩体)DNA基因库的克隆pCX7制备成 ̄(32)P-重组DNA探针,对8个不同血清群的17株问号状钩体、双曲钩体PatocⅠ株以及细螺旋体3055株DNA进行打点杂交;同时用15种DNA片断进行限制性内切酶谱分析。结果表明,该重组DNA具有问号状钩体种(Species)特异性,但与不同问号状钩体之间的同源性程度有差别;限制性内切酶谱分析发现pCX7重组DNA片段长约1.7kb,具有1个Bg1Ⅱ识别位点和3个BstB1识别位点。 相似文献
5.
作者以1%乙酸冲洗SD大鼠子宫内膜,获得子宫内膜酸溶性提取物。利用琼脂糖弥散法和电泳凝胶琼脂糖弥散法抗菌试验发现,子宫内膜提取物有三条主蛋白带对致病性大肠杆菌ML-35P耐药株有强抗菌活性,这三条抗菌蛋白带命名为RatUP-1,RatUP-2和RatUP-3,分别占子宫内膜提取物总蛋白量的4.5%,5.7%和6.6%。虽然提取物存在溶菌的活性,但其含量甚微,在AU一PAGE图谱上亦未能显现溶菌酶条带。本实验的结果提示子宫内膜合成一类抗菌多肽,可能在子宫抗菌机制中发挥重要作用。 相似文献
6.
Lorne M. Hartman Dr. 《Clinical psychology review》1983,3(4):435-456
This article represents an attempt to clarify questions posed by evidence of varying pathways to change in social anxiety. A new perspective is developed which addresses these questions and, importantly, lays the foundation for an innovative treatment approach. Essentially, social anxiety is construed here as the product of a disorganization in which feelings and cognitions (both conscious and preconscious) about the self, about other people, and about the relations between self and others are organized. Specifically, the socially anxious client experiences others autocentrically: that is, in terms of how the other person perceives, evaluates and affects one's own self. The result is a narrowed capacity for experiencing others. The goal of treatment in the new approach advocated here is to allow the individual to understand, appreciate and share the feelings, thoughts and experience of other people. Therapy is directed toward getting clients out of themselves and into other people. 相似文献
7.
Unusual cytogenetic findings were noted in the leukemic cells from a patient with congenital acute monocytic leukemia (AMol or M5, according to the FAB classification), whereas, the chromosomes of cultured skin fibroblasts were normal. G-banded karyotypes of leukemic cells showed an X-autosome translocation, 46,X,t(X;10)(Xpter----q13::10q11.2----qter)(10pter---- q11.2::Xq28----q13:: Xq28----qter). Review of reported cases of acute nonlymphocytic leukemia (ANLL) with rearrangements involving chromosomes #10 or X showed a high frequency of abnormalities of the short arm of #10 in myelomonocytic (M4) and monocytic (M5) leukemias, particularly in patients less than 2-yr-of-age. Although previously reported cases of ANLL in infants are predominantly of these types, the translocation observed in this case is unique. Fragile sites known to exist on chromosomes #10 and X are not associated with neoplasia and, except for Xq27-28, were not at the breakpoints of the case presented. The precise location of a human cellular oncogene recently identified on the X chromosome remains unknown. 相似文献
8.
5-HT 102T/C多态性与Tourette综合征的病例对照及核心家系关联分析 总被引:3,自引:0,他引:3
目的 研究5-羟色胺受体102T/C多态性是否与Tourette综合征(TS)相关联,方法对157个核心家系样本采用病例-对照关联分析,传递不平衡检验方法,聚合酶链反应及RFLP等技术,根据TS与强迫症(obsessive compulsive disorder,OCD)的同病现象,将TS划分亚组进行与5-羟色胺受体102T/C多态性的关联分析。结果 合并OCD的TS与该位点的基因型102C/C(X2=8.38,P=0.004)及等位基因102C/(X2=4.84,P=0.028)存在关联,进一步采用传递不平衡分析,发现合并(美国精神疾病诊断和统计手册IV》论断标准的OCD的TS与该位点存在关联或连锁不平衡(X2=5.12,,P=0.02),而在TS总体样本及单纯TS样本中未发现与该位点的关联,结论 5-羟色胺受体102T/C多态性与中国人群合并OCD的TS存在关联,合并OCD的TS可能是TS中相对独立的一个亚型。 相似文献
9.
Structural studies of murine I-E and human DR antigens. 总被引:8,自引:0,他引:8
The structures of murine I-E antigens from two strains of mice were compared to each other and to human DR antigens. Murine and human antigens were isolated by using allo- and xenoantiserum, respectively, and purified by sodium dodecyl sulfate polyacrylamide gel electrophoresis. The murine I-E and human DR antigens consist of two polypeptide chains designated α and β. The Eα and DRα chains display a high degree of amino acid sequence homology as do the Eβ and DRβ chains, provided a gap is inserted at position 1 of the DRβ chain. Comparison of N-terminal sequences reveals several differences between the β chains of I-E antigens from the two strains of mice. In contrast no sequence differences between the two α chains are observed. In addition, comparison of tryptic peptides examined by isoelectrofocusing reveals several differences between the two Eβ chains, but not between the two Eα chains. Thus, the polymorphism of murine I-E antigens and by analogy human DR antigens, may result from structural differences in the smaller (β) chain. 相似文献
10.
Hysterectomy in six European countries 总被引:2,自引:0,他引:2
Gynaecologists have been criticized in recent years because of their attitude towards hysterectomy; it is often stated that they are too ready to consider hysterectomy to be indicated and that hysterectomies are carried out too frequently.In order to obtain insight into the incidence of hysterectomy, 2066 women between 40 and 70 yr of age, composing a sample covering 6 European countries, were asked whether they had undergone this operation. Of the total sample, 11.4% had been hysterectomized, the highest percentage being found in Italy (15.5%) and the lowest in France (8.5%).The most important factor that influenced the relative frequency of hysterectomy was age: the percentage of women who had undergone hysterectomy increased with age up to 55–59 yr, but fell thereafter. Another significant factor was civil status; there were fewer divorcees or widows at the moment of operation than married or never-married women.The relationship between the incidence of hysterectomy and age is a parabolic one. To explain this curve the authors postulate that two trends must have played a rôle: firstly; a greater need for hysterectomy with increasing age and, secondly a decrease in the reluctance of the gynaecological profession to perform a hysterectomy and/or of women to undergo this operation.Statistical analysis confirms the existence of this second trend over the period 1960–1975. The chances of a young woman losing her uterus before her 70th year went up linearly to 19.8% in 1975. By extrapolation a figure of 21% is obtained for 1980. Satisfaction with the result of the operation was lowest in Italy and Germany; satisfaction was also lowest in rural areas. 相似文献