The collective excitations of spin states of an ensemble of polar molecules are studied as a candidate for high- fidelity quantum memory. To avoid the collisional properties of the molecules, they are arranged in dipo...The collective excitations of spin states of an ensemble of polar molecules are studied as a candidate for high- fidelity quantum memory. To avoid the collisional properties of the molecules, they are arranged in dipolar crystals under one or two dimensional trapping conditions. We calculate the lifetime of the quantum memory by identifying the dominant decoherence mechanisms and estimating their effects on gate operations when a molecular ensemble qubit is transferred to a microwave cavity.展开更多
Angelicae Sinensis Radix(Danggui)and Ligusticum Chuanxiong Rhizoma(Chuan Xiong)herb-pair(DC)have been frequently used in Traditional Chinese medicine(TCM)prescriptions for hundreds of years to prevent vascular disease...Angelicae Sinensis Radix(Danggui)and Ligusticum Chuanxiong Rhizoma(Chuan Xiong)herb-pair(DC)have been frequently used in Traditional Chinese medicine(TCM)prescriptions for hundreds of years to prevent vascular diseases and alleviate pain.However,the mechanism of DC herb-pair in the prevention of liver fibrosis development was still unclear.In the present study,the effects and mechanisms of DC herb-pair on liver fibrosis were examined using network pharmacology and mouse fibrotic model.Based on the network pharmacological analysis of 13 bioactive ingredients found in DC,a total of 46 targets and 71 pathways related to anti-fibrosis effects were obtained,which was associated with mitogen-activated protein kinase(MAPK)signal pathway,hepatic inflammation and fibrotic response.Furthermore,this hypothesis was verified using carbon tetrachloride(CCl_4)-induced fibrosis model.Measurement of liver functional enzyme activities and histopathological examination showed that DC dramatically reduced bile acid levels,inflammatory cell infiltration and collagen deposition caused by CCl_4.The increased expression of liver fibrosis markers,such as collagen 1,fibronectin,α-smooth muscle actin(α-SMA)and transforming growth factor-β(TGF-β),and inflammatory factors,such as chemokine(C-C motif)ligand 2(MCP-1),interleukin-1β(IL-1β),tumor necrosis factor-α(TNF-α)and IL-6 in fibrotic mice were significantly downregulated by DC herb-pair through regulation of extracellular signal-regulated kinase 1/2(ERK1/2)-protein kinase B(AKT)signaling pathways.Collectively,these results suggest that DC prevents the development of liver fibrosis by inhibiting collagen deposition,decreasing inflammatory reactions and bile acid accumulation,which provides insights into the mechanisms of herbpair in improving liver fibrosis.展开更多
基金Project supported by the National Natural Science Foundation of China(Grant Nos.11004029 and 11174052)the Natural Science Foundation of Jiangsu Province,China(Grant No.BK2010422)+2 种基金the Ph.D.Program Foundation of Ministry of Education of Chinathe Excellent Young Teachers Program of Southeast University,Chinathe Major State Basic Research Development Program of China(Grant No.2011CB921203)
文摘The collective excitations of spin states of an ensemble of polar molecules are studied as a candidate for high- fidelity quantum memory. To avoid the collisional properties of the molecules, they are arranged in dipolar crystals under one or two dimensional trapping conditions. We calculate the lifetime of the quantum memory by identifying the dominant decoherence mechanisms and estimating their effects on gate operations when a molecular ensemble qubit is transferred to a microwave cavity.
基金the National Natural Science Foundation of China(No.82004045)the Beijing Nova Program of Science and Technology(No.Z191100001119088)the Beijing University of Chinese Medicine Specific Grant for“Double Top Construction”(No.1000041510168)。
文摘Angelicae Sinensis Radix(Danggui)and Ligusticum Chuanxiong Rhizoma(Chuan Xiong)herb-pair(DC)have been frequently used in Traditional Chinese medicine(TCM)prescriptions for hundreds of years to prevent vascular diseases and alleviate pain.However,the mechanism of DC herb-pair in the prevention of liver fibrosis development was still unclear.In the present study,the effects and mechanisms of DC herb-pair on liver fibrosis were examined using network pharmacology and mouse fibrotic model.Based on the network pharmacological analysis of 13 bioactive ingredients found in DC,a total of 46 targets and 71 pathways related to anti-fibrosis effects were obtained,which was associated with mitogen-activated protein kinase(MAPK)signal pathway,hepatic inflammation and fibrotic response.Furthermore,this hypothesis was verified using carbon tetrachloride(CCl_4)-induced fibrosis model.Measurement of liver functional enzyme activities and histopathological examination showed that DC dramatically reduced bile acid levels,inflammatory cell infiltration and collagen deposition caused by CCl_4.The increased expression of liver fibrosis markers,such as collagen 1,fibronectin,α-smooth muscle actin(α-SMA)and transforming growth factor-β(TGF-β),and inflammatory factors,such as chemokine(C-C motif)ligand 2(MCP-1),interleukin-1β(IL-1β),tumor necrosis factor-α(TNF-α)and IL-6 in fibrotic mice were significantly downregulated by DC herb-pair through regulation of extracellular signal-regulated kinase 1/2(ERK1/2)-protein kinase B(AKT)signaling pathways.Collectively,these results suggest that DC prevents the development of liver fibrosis by inhibiting collagen deposition,decreasing inflammatory reactions and bile acid accumulation,which provides insights into the mechanisms of herbpair in improving liver fibrosis.
