Wistar-Imamichi大鼠主要脏器系数分析

对Wistar-Imamichi大鼠封闭群5-16周龄两性个体主要内脏器官及脏器系数分别进行了测定.雄性睾丸及心脏、胸腺、肺脏、肾脏、肝脏、脾脏系数均与周龄负相关,雌性卵巢及子宫系数与周龄正相关,其余器官系数均与周龄负相关.     

中华蟾蜍冬眠前后淋巴器官内肥大细胞的变化

应用组织化学方法对中华蟾蜍冬眠前后淋巴器官内肥大细胞的数量、活性、分布及组织化学性质进行了研究．结果表明,经MTB染色显示中华蟾蜍冬眠后（4月底）淋巴结、脾脏和胸腺内肥大细胞和脱颗粒数最低,而后开始上升,至9月产卵前达最高值,然后又开始下降．冬眠前（10月底）淋巴结、脾脏和胸腺内的肥大细胞和脱颗粒数均极显著高于冬眠期（12月）和冬眠后（4月底）肥大细胞和脱颗粒数（P〈0．01）,且冬眠期（12月）肥大细胞数均极显著高于冬眠后（4月底）肥大细胞数（P〈0．01）．在冬眠期与冬眠后,淋巴结、脾脏和胸腺内肥大细胞均无脱颗粒现象．肥大细胞主要分布于髓质、小血管附近及皮质和被膜下．经AB—S染色显示淋巴结、脾脏和胸腺内肥大细胞均为黏膜肥大细胞。     

拟南芥雄性不育突变体nps的基因定位

nps是经EMS诱变筛选得到的一拟南芥雄性不育突变体．通过背景纯化与遗传分析,发现nps突变体是受隐性单基因控制．形态学观察表明,突变体的花缺失花瓣和雄蕊,主要由两轮萼片和一轮肥大的雌蕊组成．利用图位克隆的方法对不育基因NPs进行了定位,结果表明NPS位于第五条染色体上分子标记F15L12和MHJ24之间1378kb的区间内．数据库预测该区间内包含10个与花发育ABC模型相关的基因,因此,对NPS基因的研究有助于深入了解拟南芥的花发育过程与花器官形成．     

The myrmecophilous organs of larvae of the small blue,Cupido minimus (Lepidoptera; Lycaenidae)

Larvae of the lycaenid butterfly Cupido minimus have been examined using scanning electron microscopy following critical-point drying. They were found to possess both dorsal organs and pore cupolae, organs associated with myrmecophily. These results are compared with those of earlier authors and their significance discussed.     

Intraspecific variation in integumental pore signatures in the genus Pleuromamma (Copepoda: Calanoida)

Intraspecific variation in the pore signature of calanoid copepods is evident between individuals within a single geographical area (within-sample variation) and between different geographical area (geographical variation). Previous studies, however, have tended to consider only geographical variation, neglecting within-sample variation; thus the question remains on how representative the data are of biogeographic divergence within a species. Eight species of the metridinid genus Pleuromamma are examined and the extent of intraspecific variation in pore signatures is assessed here in terms of within-sample variation. In general, the degree of intraspecific variation increases with increasing number of the total integumental pores and is limited to 10% or less of the total. Intraspecific variation reflects not only genetic variability within a species but also genetic similarities between the species within a genus. This paper also re-examines published data on intraspecific variation in pore signatures. Samples as small as five individuals will identify >95% of potential sites of pores.     

复方中药对内毒素引起的小鼠死亡率和多器官损伤的影响

目的：寻找有效的中药复方防治内毒素性多器官功能衰竭,降低内毒素血症小鼠的死亡率。方法：将四逆加人参汤、黄连解毒汤、参附青、参附青加丹参及清热解毒理气活血方药按常规方法煎制成药液(每毫升含1g生药),以小鼠为实验对象,灌胃给药,3d后腹腔注射内毒素,观察小鼠生存率和肺、肝、肾、肠的病理变化。结果：与正常对照组(72h生存率为100％,n=20)比较,腹腔注射内毒素组小鼠72h生存率(42％,n=26)明显降低;四逆加人参汤、黄连解毒汤、参附青均不能提高内毒素血症小鼠生存率,而参附青加丹参反而降低内毒素血症小鼠生存率(72h生存率为8％,n=13)。清热解毒理气活血方药防治组小鼠72h生存率(68％,n=34)明显高于内毒索组(26％,n=38),组织学观察显示肺、肝、肾、肠的病理变化明显减轻。结论：清热解毒理气活血方药能防治内毒素引起的多器官损伤,提高内毒素血症小鼠生存率。     

高校心理健康教育工作体系的构建及运行机制

高校心理健康教育工作体系的主体包括:以专业技术人员为主的校心理健康教育中心、以思想政治工作者为主的院(系)心理健康教育分部和学生心理社团3个层面,通过引导、防御、应急等工作机制的运转,保证大学生心理健康教育的顺利实施。     

Morphogenesis of human colon cancer cells with fetal rat mesenchymes in organ culture

Summary The morphogenesis and cytodifferentiation of human colon cancer cells (LS174T and HT29) were examined by combining cancer cells with fetal rat digestive-tract mesenchyme in organ culture. LS174T cells migrated into the mesenchyme to form glandular structures composed of single columnar cells with their nuclei oriented basally, while HT29 cells formed cell masses with little lumen formation. Immunohistochemical studies with antibodies against carcinoembryonic antigen and secretory components showed that the composition of cell surface glycoproteins was not necessarily reversed to the normal type, even when neoplastic cells exhibited normal glandular structures.This work was supported by grants-in-aid for Cancer Research from the Ministry of Education, Science, and Culture, Japan, and by the Veterans Administration Medical Research Service, USA. Y.S. Kim is the recipient of a Medical Investigator Award of the Veterans Administration.     

盐酸阿扑吗啡片剂对去势大鼠的壮阳作用和生殖器官质量的影响

制备雄性去势大鼠模型,测定给药各组去势大鼠阴茎勃起潜伏期和生殖器官质量.结果表明:与单纯模型组相比,盐酸阿扑吗啡在外部刺激下能提高雄性去势大鼠阴茎的兴奋性,阴茎勃起潜伏期缩短,而给药各组生殖器官的质量和脏器指数与去势大鼠模型组比较均无明显差异.盐酸阿扑吗啡对雄性去势大鼠具有壮阳作用,对生殖器官组织无明显影响.     

遗体器官捐献的主体研究

遗体器官的捐献目前是我国器官来源的主要途径,法律应当竭力完善这一来源以满足目前器官移植的需要。我国目前尚未以法律的形式对遗体器官捐献的主体作出规定,效力等级最高的为国务院2007年制定颁行的《人体器官移植条例》,规定只有年满18周岁的智力健全的自然人在自愿的基础上才能做出遗体器官捐献的表示。英国、日本两国在遗体器官捐献上则将捐献主体拓宽至未成年人实现鼓励身后捐献器官的目的。鉴于我国目前器官捐献的实际,找出我国目前关于遗体器官捐献主体规定存在的诸多不足,并提出立法建议。