Neuron-derived clone 77 (Nur77) is a member of the NR4A subfamily that plays critical roles in apoptosis, survival, proliferation, autophagy, angiogenesis, inflammatory responses, DNA repair, glycolipid metabolism and...Neuron-derived clone 77 (Nur77) is a member of the NR4A subfamily that plays critical roles in apoptosis, survival, proliferation, autophagy, angiogenesis, inflammatory responses, DNA repair, glycolipid metabolism and energy consumption. The deregulation of Nur77 signalling often relates to various serious diseases, including cancer and non-cancer diseases. A systematic review is necessary for the better understanding of Nur77 in clinical treatment. In this article, we comprehensively conclude the lipid regulation function and expression of Nur77, and its role in COPD. Finally, we prospect that development of drugs and clinical biochemical investigations targeting of Nur77 has considerable potential within healthcare.展开更多
Dilatancy is referred to the phenomenon of volume increase that occurs when a material is deformed.Dilatancy theory originated in geomechanics for the study of the behavior of granular materials.Later it is expanded t...Dilatancy is referred to the phenomenon of volume increase that occurs when a material is deformed.Dilatancy theory originated in geomechanics for the study of the behavior of granular materials.Later it is expanded to the case of more brittle materials like rocks when it is subjected to the load of varying effective stress and starts to crack and deform,then named the dilatancy-diffusion hypothesis.This hypothesis was developed to explain the changes in rock volume and pore pressure that occur prior to and during fault slip,which can influence earthquake dynamics.Dilatancy-fluid diffusion is a significant concept in understanding the seismogenic process and has served as the major theoretical pillar for earthquake prediction by its classic definition.This paper starts with the recount of fundamental laboratory experiments on granular materials and rocks,then conducts review and examination of the history for using the dilatancy-diffusion hypothesis to interpret the‘prediction’of the 1975 Haicheng Earthquake and other events.The Haicheng Earthquake is the first significant event to be interpreted with the dilatancy-diffusion hypothesis in the world.As one pivotal figure in the development of the dilatancy-diffusion hypothesis for earthquake prediction Professor Amos Nur of Stanford University worked tirelessly to attract societal attention to this important scientific and humanistic issue.As a deterministic physical model the dilatancy-diffusion hypothesis intrinsically bears the deficit to interpret the stochastic seismogenic process.With the emergence of deep learning and its successful applications to many science and technology fields,we may see a possibility to overcome the shortcoming of the current state of the theory with the addition of empirical statistics to push the operational earthquake forecasting approach with the addition of the physicallyinformed neural networks which adopt the dilatancy-diffusion hypothesis as one of its embedded physical relations,to uplift the seismic risk reduction to a new level for saving lives and reducing the losses.展开更多
目的研究肝大部分切除术(PHx)后核受体Nur77调控肝细胞进入增殖周期的分子机制。方法在Nur77基因敲除型(knockout,KO)和野生型对照组中构建PHx诱导的小鼠肝再生模型,用组织学染色、生化、定量PCR以及蛋白免疫印迹(western-blot,WB)等方...目的研究肝大部分切除术(PHx)后核受体Nur77调控肝细胞进入增殖周期的分子机制。方法在Nur77基因敲除型(knockout,KO)和野生型对照组中构建PHx诱导的小鼠肝再生模型,用组织学染色、生化、定量PCR以及蛋白免疫印迹(western-blot,WB)等方法检测再生肝组织的形态学、血清学改变,以及相应基因的表达情况。结果PHx术后多个时间点KO组肝脏均出现组织坏死,KO组术后48 h、72 h的血清ALT均高于WT组(466.3±202.4 vs 72.0±58.8,486.2±156.3 vs 63.0±0.3,P<0.05)。凋亡细胞特异性染色示KO组术后3 h和48 h的凋亡细胞计数高于对照组(38.7±9.6 vs 2.8±0.2,87.3±19.4 vs 8.4±3.1,P<0.05)。PHx术后早期KO组肝脏的凋亡基因caspase-8与剪切caspase-3蛋白均上调。结论Nur77缺失诱导肝再生早期肝细胞凋亡。展开更多
文摘Neuron-derived clone 77 (Nur77) is a member of the NR4A subfamily that plays critical roles in apoptosis, survival, proliferation, autophagy, angiogenesis, inflammatory responses, DNA repair, glycolipid metabolism and energy consumption. The deregulation of Nur77 signalling often relates to various serious diseases, including cancer and non-cancer diseases. A systematic review is necessary for the better understanding of Nur77 in clinical treatment. In this article, we comprehensively conclude the lipid regulation function and expression of Nur77, and its role in COPD. Finally, we prospect that development of drugs and clinical biochemical investigations targeting of Nur77 has considerable potential within healthcare.
基金sponsored by the National Research Foundation of Korea(RS-2023-00220913).
文摘Dilatancy is referred to the phenomenon of volume increase that occurs when a material is deformed.Dilatancy theory originated in geomechanics for the study of the behavior of granular materials.Later it is expanded to the case of more brittle materials like rocks when it is subjected to the load of varying effective stress and starts to crack and deform,then named the dilatancy-diffusion hypothesis.This hypothesis was developed to explain the changes in rock volume and pore pressure that occur prior to and during fault slip,which can influence earthquake dynamics.Dilatancy-fluid diffusion is a significant concept in understanding the seismogenic process and has served as the major theoretical pillar for earthquake prediction by its classic definition.This paper starts with the recount of fundamental laboratory experiments on granular materials and rocks,then conducts review and examination of the history for using the dilatancy-diffusion hypothesis to interpret the‘prediction’of the 1975 Haicheng Earthquake and other events.The Haicheng Earthquake is the first significant event to be interpreted with the dilatancy-diffusion hypothesis in the world.As one pivotal figure in the development of the dilatancy-diffusion hypothesis for earthquake prediction Professor Amos Nur of Stanford University worked tirelessly to attract societal attention to this important scientific and humanistic issue.As a deterministic physical model the dilatancy-diffusion hypothesis intrinsically bears the deficit to interpret the stochastic seismogenic process.With the emergence of deep learning and its successful applications to many science and technology fields,we may see a possibility to overcome the shortcoming of the current state of the theory with the addition of empirical statistics to push the operational earthquake forecasting approach with the addition of the physicallyinformed neural networks which adopt the dilatancy-diffusion hypothesis as one of its embedded physical relations,to uplift the seismic risk reduction to a new level for saving lives and reducing the losses.
文摘目的研究肝大部分切除术(PHx)后核受体Nur77调控肝细胞进入增殖周期的分子机制。方法在Nur77基因敲除型(knockout,KO)和野生型对照组中构建PHx诱导的小鼠肝再生模型,用组织学染色、生化、定量PCR以及蛋白免疫印迹(western-blot,WB)等方法检测再生肝组织的形态学、血清学改变,以及相应基因的表达情况。结果PHx术后多个时间点KO组肝脏均出现组织坏死,KO组术后48 h、72 h的血清ALT均高于WT组(466.3±202.4 vs 72.0±58.8,486.2±156.3 vs 63.0±0.3,P<0.05)。凋亡细胞特异性染色示KO组术后3 h和48 h的凋亡细胞计数高于对照组(38.7±9.6 vs 2.8±0.2,87.3±19.4 vs 8.4±3.1,P<0.05)。PHx术后早期KO组肝脏的凋亡基因caspase-8与剪切caspase-3蛋白均上调。结论Nur77缺失诱导肝再生早期肝细胞凋亡。
