糖皮質(zhì)激素快速抑制氣道平滑肌收縮的非基因組機(jī)制
[Abstract]:Glucocorticoid hormone (GCs) is a steroid hormone synthesized and secreted by the adrenal cortical bundles in vivo. It has important physiological and pharmacological effects and plays an important role in the development differentiation metabolism and immune regulation of the body. GCs is widely used in anti-inflammatory and immunosuppression. The traditional view is that GCs play the above role through genomic mechanism. GCs enter into the target cells, and form the conformation of hormone receptor complex (GCR) by binding to glucocorticoids receptor (glucocorticoids receptor). The conformation changes and dissociates from heat shock protein (HSPs), and then goes through nuclear translocation and dimerization. Binding specifically to the glucocorticoid response element (glucocorticoid response element GREs on the target gene, or acting on the transcription factor AP-1, NF-kappa B and a variety of signal transduction and transcriptional activator (STATs), altered the transcription and translation of its downstream genes. Genomic mechanisms are characterized by longer response times, usually more than 30 minutes, up to several hours, days or more. On the other hand, there is considerable evidence that GCs can cause many physiological and behavioral effects that occur very quickly, in seconds or minutes, in addition to typical genomic mechanisms. The rapid effect of GCs is difficult to be explained by genomic interaction from the point of view of the reaction phase and the molecular basis of the reaction. It has been proved that GCs have a fast nongenomic interaction (nongenomic effects). Which is different from genomic interaction. Compared with the genomic mechanism, this effect has the following characteristics: (1) it acts faster (seconds to minutes) and recovers quickly (after the hormone is removed, the effect rapidly disappears); (2) some non-genomic effects cannot be blocked by steroid hormone nuclear receptor antagonists (uncle such as RU486). Also can not be blocked by transcription or protein synthesis inhibitors (such as transcriptional synthesis inhibitor actinomycin D, protein synthesis inhibitor actinomycin); (3) some non-groups
【學(xué)位授予單位】:第二軍醫(yī)大學(xué)
【學(xué)位級(jí)別】:碩士
【學(xué)位授予年份】:2006
【分類號(hào)】:R332;R96
【共引文獻(xiàn)】
相關(guān)期刊論文 前10條
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相關(guān)博士學(xué)位論文 前10條
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9 張?jiān)?SLC34A2基因真核表達(dá)載體的構(gòu)建及其轉(zhuǎn)染人肺泡上皮細(xì)胞的實(shí)驗(yàn)研究[D];吉林大學(xué);2008年
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