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生态环境对白芷产量质量的影响 总被引:1,自引:0,他引:1
生态环境对白芷产量质量的影响陈兴福,丁德蓉,刘岁荣,卢进,黄文秀(四川省中医药研究院药物种植研究所,南川648408)EffectofEco-EnvironmentonDahurianAngelicaYieldandItsQuality¥ChenXi... 相似文献
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大鼠胸部照射γ射线20Gy,照射后观察支气管肺泡灌洗液(BALF)中蛋白质含量、细胞总数和分类及巨噬细胞存活率,肺指数及肺组织纤溶活力,并做了大体解剖和组织学检查。结果为:照射后2周开始BALF中蛋白质含量、细胞总数和中性粒细胞即明显增多,照射后1——2个月持续处于高水平,高峰在1.5─2个月,照射后3─4个月有所下降,肺指数有相应变化;肺组织纤溶活力则相反,从照射后2周开始持续下降,至照射后2个月已降至最低,接近于零。形态学观察也见到有早期肺水肿和晚期肺萎缩等变化。由上结果可见,大鼠胸部照射后的早期主要为渗出性病变和纤溶活力的降低。文中讨论了照射后血管内皮细胞的损伤在放射性肺损伤发病中的作用。 相似文献
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A. Jagannadha Rao N. Mathialagan S. G. Kotagi N. R. Moudgal 《Journal of biosciences》1984,6(2):97-106
The regulation of secretion of chorionic gonadotropin in primates has been studied using bothin vivo andin vitro models.In vivo studies using the pregnant bonnet monkey revealed that at the doses tested, the administration of progesterone or estradiol 17Β in combination or alone did not result in any appreciable change in the duration or magnitude of serum chorionic gonadotropin levels. However, administration of lutropin-releasing hormone by intravenous route resulted in significant increase in chorionic gonadotropin levels within 30–60 min and the extent of stimulation seemed to depend on the state of pregnancy. Forin vitro studies, explants or cells prepared from first trimester human placenta has been used. The functional integrity of these cells has been established by demonstrating the binding of [125I]-labelled human chorionic gonadotropin antibody to the cells as well as the synthesis of [3H]-labelled human chorionic gonadotropin.In vitro studies using the cells revealed that addition of lutropin-releasing hormone caused a significant increase in chorionic gonadotropin and estradiol 17Β secreted into the medium. Thus bothin vivo andin vitro results suggest that lutropin-releasing hormone could be one of the factors involved in regulation of chorionic gonadotropin secretion in primates. 相似文献
768.
We have generated four xenogeneic rat antimouse IgG3 monoclonal antibodies recognizing at least three different antigenic determinants (epitopes) on BALB/c IgG3 molecules. These antibodies were used in solid-phase blocking radioimmunoassays for detection of the epitopes in sera of 40 inbred strains and 134 wild mice. These antibodies detect genetic polymorphism of IgG3 isotype among wild mice even though there is no polymorphism found among 40 inbred strains tested (except X-chromosome-linked immunodeficient CBA/N strain which lacks IgG3 molecules). An IgG3 variant was also isolated from hybridomas derived from Mus spretus.Abbreviations
Igh-C
immunoglobulin heavy chain constant region
- PVC
polyvinyl chloride
- RIA
radioimmune assay
- ELISA
enzyme linked immunosorbent assay 相似文献
769.
Hormone-regulated expression of cellular rasH oncogene in mammary carcinomas in rats 总被引:1,自引:0,他引:1
Differential gene expression has been observed in hormone-dependent rat mammary carcinomas during their growth and regression. A 22K MW protein, a prominent in vitro translation product of the growing as compared to the regressing tumor, was identified as the c-rasH-21,000-dalton transforming protein (p21) using a monoclonal antibody that reacts specifically with Harvey-related p21 species. The amount of p21-translated protein sharply decreased in the translation products of the regressing tumors within 6 hours post ovariectomy or dibutyryl cyclic AMP treatment. The results show that an enhanced expression of the c-rasH oncogene is associated with hormone-dependent growth of mammary carcinomas in vivo and that suppression of this oncogene precedes the tumor regression induced by either hormone withdrawal or dibutyryl cyclic AMP treatment. 相似文献
770.