探究秦川牛宰后成熟过程中线粒体Tu翻译延长因子(mitochondrial Tu translation elongation factor,TUFM)表达对肉的持水性影响。以秦川牛背最长肌为研究对象,测定4℃不同成熟时间下的pH值、贮藏损失、离心损失、蒸煮损失、水分分布、...探究秦川牛宰后成熟过程中线粒体Tu翻译延长因子(mitochondrial Tu translation elongation factor,TUFM)表达对肉的持水性影响。以秦川牛背最长肌为研究对象,测定4℃不同成熟时间下的pH值、贮藏损失、离心损失、蒸煮损失、水分分布、肌原纤维蛋白等指标变化情况,测定不同成熟时间(0、96、192 h)下TUFM表达量及其含量、Beclin1蛋白表达量。结果显示:在秦川牛宰后成熟期间,肌原纤维蛋白发生降解,TUFM的表达量与Beclin1蛋白表达量和牛肉的持水性存在密切关系,其中蛋白质组学测定的TUFM表达量变化与TUFM含量变化趋势一致,Beclin1蛋白表达量、贮藏损失、离心损失、蒸煮损失整体均呈先上升后下降趋势,pH值呈先下降后上升趋势;Pearson相关性分析表明,牛背最长肌中TUFM表达量与低场核磁共振峰面积比P_(2b)、Beclin1蛋白表达量呈极显著正相关(P<0.01),与贮藏损失、离心损失、蒸煮损失呈显著正相关(P<0.05),与P_(21)呈极显著负相关(P<0.01),与P_(22)呈显著负相关(P<0.05),与pH值无显著相关性(P>0.05)。通过蛋白质组学鉴定出23种与TUFM相关的差异蛋白,通过基因本体论、京都基因与基因组百科全书通路分析发现,差异蛋白可通过多种途径参与能量代谢,进而介导细胞自噬;对差异蛋白和持水性指标进行Pearson相关性分析发现,有5种差异蛋白(ATP5F1D、EEF1A2、GSPT1、NDUFB5、SUCLG1)与持水性指标具有显著相关性(P<0.05、P<0.01)。分析可知,包括TUFM在内,共6种蛋白主要通过能量代谢和氧转运等途径正向或负向影响细胞自噬,从而影响肉的持水性。展开更多
Chinese scientist TU You-you on October 5, 2015 won the Nobel Prize in Physiology or Medicine amongst a trio for discovering parasite therapies. She and the other two scientists, William Campbell and Satoshi Omura, fo...Chinese scientist TU You-you on October 5, 2015 won the Nobel Prize in Physiology or Medicine amongst a trio for discovering parasite therapies. She and the other two scientists, William Campbell and Satoshi Omura, found ＂therapies that have revolutionized the treatment of some of the most devastating parasitic diseases＂. 85-year-old Tu is awarded this world-renowned prize for developing artemisinin, a drug therapy for malaria that has saved millions of lives across the globe, especially in the developing world.展开更多
The 2011 Lasker Clinical Medical Research Award honors a scientist who discovered artemisinin and its utility for treating malaria. Prof. TU You-you （China Academy of Chinese Medical Sciences, Beijing） transformed a...The 2011 Lasker Clinical Medical Research Award honors a scientist who discovered artemisinin and its utility for treating malaria. Prof. TU You-you （China Academy of Chinese Medical Sciences, Beijing） transformed an ancient Chinese healing method into the most powerful antimalarial medicine currently available that has saved millions of lives across the globe, especially in the developing world. An artemisinin-based drug combination is now the standard regimen for malaria recommended by the World Health Organization （WHO）.展开更多
Jiu Ai Tu(The Moxa Treatment)from the Song dynasty is the earliest surviving painting that focuses on the subject of acupuncture and moxibustion.This paper takes the medical activities depicted in the artwork as its r...Jiu Ai Tu(The Moxa Treatment)from the Song dynasty is the earliest surviving painting that focuses on the subject of acupuncture and moxibustion.This paper takes the medical activities depicted in the artwork as its research object and systematically analyzes the external treatment methods for abscesses during the Song dynasty reflected in Jiu Ai Tu.By examining the understanding of abscesses during that period,the paper explores the level of development in external medicine techniques.By analyzing the medical awareness and behaviors of patients when facing such severe illnesses,it aims to explore the societal cognition and experiences regarding health and disease.The paper attempts to present the folk medical ecology of the Song dynasty represented by Jiu Ai Tu.展开更多
Objective:To determine the active components of Eupolyphaga sinensis Walker(Tu Bie Chong)and explore the mechanisms underlying its fracture-healing ability.Methods: A modified Einhorn method was used to develop a rat ...Objective:To determine the active components of Eupolyphaga sinensis Walker(Tu Bie Chong)and explore the mechanisms underlying its fracture-healing ability.Methods: A modified Einhorn method was used to develop a rat tibial fracture model.Progression of bone healing was assessed using radiological methods.Safranin O/fast green and CD31 immunohistochemical staining were performed to evaluate the growth of bone cells and angiogenesis at the fracture site.Methylthiazoletetrazolium blue and wound healing assays were used to analyze cell viability and migration.The Transwell assay was used to explore the invasion capacity of the cells.Tubule formation assays were used to assess the angiogenesis capacity of human vascular endothelial cells(HUVECs).qRT-PCR was used to evaluate the changes in gene transcription levels.Results: Tu Bie Chong fraction 3(TF3)significantly shortened the fracture healing time in model rats.X-ray results showed that on day 14,fracture healing in the TF3 treatment group was significantly better than that in the control group(P=.0086).Tissue staining showed that cartilage growth and the number of H-shaped blood vessels at the fracture site of the TF3 treatment group were better than those of the control group.In vitro,TF3 significantly promoted the proliferation and wound healing of MC3T3-E1s and HUVECs(all P<.01).Transwell assays showed that TF3 promoted the migration of HUVECs,but inhibited the migration of MC3T3-E1 cells.Tubule formation experiments confirmed that TF3 markedly promoted the ability of vascular endothelial cells to form microtubules.Gene expression analysis revealed that TF3 significantly promoted the expression of VEGFA,SPOCD1,NGF,and NGFR in HUVECs.In MC3T3-E1 cells,the transcript levels of RUNX2 and COL2A1 were significantly elevated following TF3 treatment.Conclusion: TF3 promotes fracture healing by promoting bone regeneration associated with the RUNX2 pathway and angiogenesis associated with the VEGFA pathway.展开更多
目的探讨颞叶癫痫患者脑部病理改变、线粒体蛋白质翻译延长因子Tu和Ts(mitochondrial translation elongation factor Tu and Ts,EF-Tu_(mt)和EF-Ts_(mt))的表达情况,为临床治疗及预后改善提供有效的理论依据。方法选取2013年1月至2016...目的探讨颞叶癫痫患者脑部病理改变、线粒体蛋白质翻译延长因子Tu和Ts(mitochondrial translation elongation factor Tu and Ts,EF-Tu_(mt)和EF-Ts_(mt))的表达情况,为临床治疗及预后改善提供有效的理论依据。方法选取2013年1月至2016年1月本院收治的40例颞叶癫痫患者(颞叶癫痫组)和20例颅脑外伤患者(对照组)为研究对象。取所有患者颞叶皮层脑组织,行脑组织病理学观察、脑组织EF-Tu_(mt)和EF-Ts_(mt)免疫组织化学检查及免疫电镜检查。结果颞叶癫痫组患者病理组织呈现神经元分布不均、脑皮质分层紊乱;胞质少,细胞核呈现空泡状;病灶组织小血管充血、增生;小血管及胶质细胞增生;有淋巴套形成。颞叶癫痫组患者脑组织中EF-Tu_(mt)和EF-Ts_(mt)阳性表达颗粒数和细胞数均显著多于对照组(P<0.05)。结论颞叶癫痫患者脑组织出现明显的病理改变,且EF-Tu_(mt)和EF-Ts_(mt)表达水平均显著升高,但其机制尚不明确。展开更多
文摘Chinese scientist TU You-you on October 5, 2015 won the Nobel Prize in Physiology or Medicine amongst a trio for discovering parasite therapies. She and the other two scientists, William Campbell and Satoshi Omura, found ＂therapies that have revolutionized the treatment of some of the most devastating parasitic diseases＂. 85-year-old Tu is awarded this world-renowned prize for developing artemisinin, a drug therapy for malaria that has saved millions of lives across the globe, especially in the developing world.
文摘The 2011 Lasker Clinical Medical Research Award honors a scientist who discovered artemisinin and its utility for treating malaria. Prof. TU You-you （China Academy of Chinese Medical Sciences, Beijing） transformed an ancient Chinese healing method into the most powerful antimalarial medicine currently available that has saved millions of lives across the globe, especially in the developing world. An artemisinin-based drug combination is now the standard regimen for malaria recommended by the World Health Organization （WHO）.
基金financed from the grant of the National Social Science Foundation General Project(No.23BZS010)。
文摘Jiu Ai Tu(The Moxa Treatment)from the Song dynasty is the earliest surviving painting that focuses on the subject of acupuncture and moxibustion.This paper takes the medical activities depicted in the artwork as its research object and systematically analyzes the external treatment methods for abscesses during the Song dynasty reflected in Jiu Ai Tu.By examining the understanding of abscesses during that period,the paper explores the level of development in external medicine techniques.By analyzing the medical awareness and behaviors of patients when facing such severe illnesses,it aims to explore the societal cognition and experiences regarding health and disease.The paper attempts to present the folk medical ecology of the Song dynasty represented by Jiu Ai Tu.
基金supported by“the Fundamental Research Funds for the Central Universities”(2020-JYB-ZDGG-054)“Beijing university of Chinese medicine XINAO Award Fund”(2019)Beijing University of Chinese Medicine Scientific Research and Development Fund(2170072220002).
文摘Objective:To determine the active components of Eupolyphaga sinensis Walker(Tu Bie Chong)and explore the mechanisms underlying its fracture-healing ability.Methods: A modified Einhorn method was used to develop a rat tibial fracture model.Progression of bone healing was assessed using radiological methods.Safranin O/fast green and CD31 immunohistochemical staining were performed to evaluate the growth of bone cells and angiogenesis at the fracture site.Methylthiazoletetrazolium blue and wound healing assays were used to analyze cell viability and migration.The Transwell assay was used to explore the invasion capacity of the cells.Tubule formation assays were used to assess the angiogenesis capacity of human vascular endothelial cells(HUVECs).qRT-PCR was used to evaluate the changes in gene transcription levels.Results: Tu Bie Chong fraction 3(TF3)significantly shortened the fracture healing time in model rats.X-ray results showed that on day 14,fracture healing in the TF3 treatment group was significantly better than that in the control group(P=.0086).Tissue staining showed that cartilage growth and the number of H-shaped blood vessels at the fracture site of the TF3 treatment group were better than those of the control group.In vitro,TF3 significantly promoted the proliferation and wound healing of MC3T3-E1s and HUVECs(all P<.01).Transwell assays showed that TF3 promoted the migration of HUVECs,but inhibited the migration of MC3T3-E1 cells.Tubule formation experiments confirmed that TF3 markedly promoted the ability of vascular endothelial cells to form microtubules.Gene expression analysis revealed that TF3 significantly promoted the expression of VEGFA,SPOCD1,NGF,and NGFR in HUVECs.In MC3T3-E1 cells,the transcript levels of RUNX2 and COL2A1 were significantly elevated following TF3 treatment.Conclusion: TF3 promotes fracture healing by promoting bone regeneration associated with the RUNX2 pathway and angiogenesis associated with the VEGFA pathway.
文摘目的探讨颞叶癫痫患者脑部病理改变、线粒体蛋白质翻译延长因子Tu和Ts(mitochondrial translation elongation factor Tu and Ts,EF-Tu_(mt)和EF-Ts_(mt))的表达情况,为临床治疗及预后改善提供有效的理论依据。方法选取2013年1月至2016年1月本院收治的40例颞叶癫痫患者(颞叶癫痫组)和20例颅脑外伤患者(对照组)为研究对象。取所有患者颞叶皮层脑组织,行脑组织病理学观察、脑组织EF-Tu_(mt)和EF-Ts_(mt)免疫组织化学检查及免疫电镜检查。结果颞叶癫痫组患者病理组织呈现神经元分布不均、脑皮质分层紊乱;胞质少,细胞核呈现空泡状;病灶组织小血管充血、增生;小血管及胶质细胞增生;有淋巴套形成。颞叶癫痫组患者脑组织中EF-Tu_(mt)和EF-Ts_(mt)阳性表达颗粒数和细胞数均显著多于对照组(P<0.05)。结论颞叶癫痫患者脑组织出现明显的病理改变,且EF-Tu_(mt)和EF-Ts_(mt)表达水平均显著升高,但其机制尚不明确。
