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Zhao T, Wang Y, Zhai Y, Qu X, Cheng A, Du S, Loy MMT. A user-friendly two-color super-resolution localization microscope. OPTICS EXPRESS 2015; 23:1879-1887. [PMID: 25835942 DOI: 10.1364/oe.23.001879] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
We report a robust two-color method for super-resolution localization microscopy. Two-dye combination of Alexa647 and Alexa750 in an imaging buffer containing COT and using TCEP as switching regent provides matched and balanced switching characteristics for both dyes, allowing simultaneous capture of both on a single camera. Active sample locking stabilizes sample with 1nm accuracy during imaging. With over 4,000 photons emitted from both dyes, two-color superresolution images with high-quality were obtained in a wide range of samples including cell cultures, tissue sections and yeast cells.
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77
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Chen P, Shu C, Guo X, Loy MMT, Du S. Measuring the biphoton temporal wave function with polarization-dependent and time-resolved two-photon interference. PHYSICAL REVIEW LETTERS 2015; 114:010401. [PMID: 25615453 DOI: 10.1103/physrevlett.114.010401] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/19/2014] [Indexed: 06/04/2023]
Abstract
We propose and demonstrate an approach to measuring the biphoton temporal wave function with polarization-dependent and time-resolved two-photon interference. Through six sets of two-photon interference measurements projected onto different polarization subspaces, we can reconstruct the amplitude and phase functions of the biphoton temporal waveform. For the first time, we apply this technique to experimentally determine the temporal quantum states of the narrow-band biphotons generated from the spontaneous four-wave mixing in cold atoms.
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78
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Lu F, Li Z, Ruan Z, Liu X, Du S, Ruan Q, Deng Y, Jiang J, Shi D. 123 EFFECTS OF TAURO URSODEOXYCHOLIC ACID ON DEVELOPMENT OF BOVINE EMBRYOS FROM IN VITRO FERTILIZATION. Reprod Fertil Dev 2015. [DOI: 10.1071/rdv27n1ab123] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
Abstract
Endoplasmic reticulum stress (ERS) is a novel apoptotic pathway and plays an important role for embryonic development. Tauro ursodeoxycholic acid (TUDCA) is a specific chemical chaperone that can inhibit ERS. In this study, we investigated the effects of TUDCA on the development and mRNA expression of ERS-related genes in bovine embryos from IVF in order to improve the efficiency of embryo in vitro culture. Bovine oocytes collected from ovaries at slaughter were cultured in the maturation medium (TCM-199 + 26.2 mmol L–1 NaHCO3 + 5 mmol L–1 HEPES + 5% fetal bovine serum) for 24 h and fertilized in vitro with bovine sperm. After fertilization, the embryos were respectively placed into the medium (TCM-199 + 3% fetal bovine serum) containing different concentrations of TUDCA (0, 100, 250, 500, 1000 μmol L–1) and cultured in the 5% CO2 at 38.5°C. Blastocyst development was evaluated after 7 days of culture, and then the total cell number and apoptosis index of blastocysts were detected with TUNEL. In addition, X-box binding protein 1 (XBP-1) of embryos at 2-cell, 4-cell, morula, and blastocyst stages was detected with RT-PCR, and the change of the mRNA expression of ERS-related (Grp78, Ire1, Chop) and apoptosis-related (Bax, Bcl-2) genes in blastocyst collected at 7 days of culture were analysed by QRT-PCR. A total of 1336 oocytes were used in this study, and each experimental group comprised 6 replicates. The results revealed that the splicing of XBP-1 was present during the development of bovine embryos, and especially obvious at the 4-cell, morula, and blastocyst stages. When embryos were cultured in medium with different concentrations of TUDCA, compared with the control group (0 μmol L–1), more embryos developed to blastocyst stage with 500 μmol L–1 TUDCA (31.86 ± 7.32% v. 21.11 ± 8.05%; P < 0.05), but the cleavage rate was not significantly different among groups (P > 0.05). The result for TUNEL found that when adding 500 μmol L–1 TUDCA to culture, the bovine embryos significantly improved the total cell number of blastocysts (110. ± 15.21 v. 102.3 ± 8.62; P < 0.05), and the apoptosis index of blastocysts was markedly decreased (3.71 ± 0.91 v. 5.36 ± 1.92; P < 0.05) relative to the control group. Moreover, the result of QRT-PCR analysis showed that treating embryos with 500 μmol L–1 TUDCA significantly reduced the mRNA expression level of Ire1 and Chop genes (P < 0.05) and up-regulated the expression of anti-apoptotic Bcl-2 gene (P < 0.05), while down-regulated the expression of pro-apoptotic Bax gene (P < 0.05). Furthermore, XBP-1 splicing in blastocysts also abated after embryos were treated with 500 μmol L–1 TUDCA. In conclusion, ERS occurs in bovine embryos during in vitro culture, but treating embryos with 500 μmol L–1 TUDCA may reduce ERS to facilitate embryonic development.
This work was funded by the China High Technology Development Program (2011AA100607), China Natural Science Foundation (31072033), and Guangxi Science Foundation (2011GXNSFA018084, 2012GXNSFFA060004).
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79
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Zhang J, Du S, Kafi A, Fox B, Li JL, Liu XY, Rajkhowa R, Wang XG. Surface energy of silk fibroin and mechanical properties of silk cocoon composites. RSC Adv 2015. [DOI: 10.1039/c4ra09482d] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Both the physical and physiochemical properties of domestic and wild silkworm silk fibroin were studied, including surface energy and surface energy heterogeneity.
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80
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Chen D, Li Y, Li H, Wang K, Du S, Chu W, Zhang J. The genetic diversity of sinipercid fishes based on complete mitochondrial DNA of six sinipercid fishes from different drainages in China. Curr Mol Med 2014; 14:1279-85. [PMID: 25470289 DOI: 10.2174/1566524014666141202162058] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2013] [Revised: 10/17/2013] [Accepted: 02/26/2014] [Indexed: 11/22/2022]
Abstract
Sinipercids are a group of freshwater perciform fish endemic in East Asia with the majority of species recorded in China. In the present study, we analyzed the organizations of complete mitogenomes of the six sinipercid fish populations from the Yangtze River and the Pearl River systems in China. The proportion of G was relatively low just at 16.2%-16.5% among the fish populations analyzed. The similarity and divergence analysis showed that the populations from different drainages have more sequence similarities than those from different species in the same drainages. The rate of point mutation was 0.39% and a total of 422 variable sites were identified in the 12 protein-coding genes (excluding the ND6) among the four S. scherzeri populations. The analysis of evolutionary relationship showed that the four S. scherzeri populations can be divided into two groups of Yangtze River system and the Pearl River. Overall the data provide significant information for the genetic and evolutionary status of sinipercids upon adapting to different environments, and for genetic conservation and selective breeding of these fish species in fishery and aquaculture.
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81
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Harenberg J, Hentschel VAT, Du S, Zolfaghari S, Krämer R, Weiss C, Krämer BK, Wehling M. Anticoagulation in patients with impaired renal function and with haemodialysis. Anticoagulant effects, efficacy, safety, therapeutic options. Hamostaseologie 2014; 35:77-83. [PMID: 25405246 DOI: 10.5482/hamo-14-08-0036] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/27/2014] [Accepted: 11/10/2014] [Indexed: 11/05/2022] Open
Abstract
Patients with impaired renal function are exposed to an increased risk for bleeding complications depending on the amount of the anticoagulant eliminated by the kidneys. The elimination of unfractionated heparins, vitamin K antagonists and argatroban is only minimally influenced by a reduced renal function. Low-molecular weight heparins, fondaparinux, danaparoid, hirudins and non-vitamin K antagonist oral anticoagulants (NOAC) cause a variably increased bleeding risk in renal impairment. Dose reductions are recommended for all of these anticoagulants in renal impairment, some are even contraindicated at certain levels of renal impairment. Their benefit over the conventional anticoagulants is preserved if renal dosing is employed. For end-stage renal disease patients specific treatment regimens are required.
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82
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Wang J, Deng X, Du S, Cheng F, Li F, Lu L, Zhang H. Carbon Nanotube Reinforced Ceramic Composites: A Review. ACTA ACUST UNITED AC 2014. [DOI: 10.1007/bf03401072] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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83
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Liu C, Sun Y, Zhao L, Zhang S, Loy MMT, Du S. Efficiently loading a single photon into a single-sided Fabry-Perot cavity. PHYSICAL REVIEW LETTERS 2014; 113:133601. [PMID: 25302886 DOI: 10.1103/physrevlett.113.133601] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/30/2014] [Indexed: 06/04/2023]
Abstract
We demonstrate that a single photon with an optimal temporal waveform can be efficiently loaded into a cavity. Using heralded narrow-band single photons with exponential growth wave packet shaped by an electro-optical amplitude modulator, whose time constant matches the photon lifetime in the cavity, we demonstrate a loading efficiency of (87±2)% from free space to a single-sided Fabry-Perot cavity. We further demonstrate directly loading heralded single Stokes photons into the cavity with an efficiency of (60±5)% without the electro-optical amplitude modulator and verify the time reversal between the frequency-entangled paired photons. Our result and approach may enable promising applications in realizing large-scale quantum networks based on cavity quantum electrodynamics.
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84
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Du S, Pellicciotta I, Barcellos-Hoff M. Biologically Augmented Radiation Therapy via TGFβ Control of the Tumor Microenvironment. Int J Radiat Oncol Biol Phys 2014. [DOI: 10.1016/j.ijrobp.2014.05.198] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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85
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Martinez A, Du S, Walther D. Brain Networks for the Categorization of Facial Expressions of Emotion. J Vis 2014. [DOI: 10.1167/14.10.1392] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022] Open
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86
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Du S, Pallett P, Martinez AM. Recognition of complex and realistic facial expressions of emotion. J Vis 2014. [DOI: 10.1167/14.10.1386] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022] Open
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87
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Gofryk K, Du S, Stanek CR, Lashley JC, Liu XY, Schulze RK, Smith JL, Safarik DJ, Byler DD, McClellan KJ, Uberuaga BP, Scott BL, Andersson DA. Anisotropic thermal conductivity in uranium dioxide. Nat Commun 2014; 5:4551. [DOI: 10.1038/ncomms5551] [Citation(s) in RCA: 79] [Impact Index Per Article: 7.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/09/2014] [Accepted: 06/27/2014] [Indexed: 11/09/2022] Open
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88
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Wang D, Guo W, Hu J, Liu F, Chen L, Du S, Tang Z. Estimating atomic sizes with Raman spectroscopy. Sci Rep 2014; 3:1486. [PMID: 23508118 PMCID: PMC3601407 DOI: 10.1038/srep01486] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/13/2012] [Accepted: 02/25/2013] [Indexed: 01/17/2023] Open
Abstract
We demonstrate a technique to determine the Van der Waals radius of iodine atoms using Raman spectroscopy. The iodine diatomic molecules are diffused into the nano-scale channels of a zeolite single crystal. We found their polarized Raman spectroscopy, which corresponds to iodine molecule's vibrational motion along the direction of molecular axis, is significantly modified by the interaction between the iodine molecules and the rigid frame of the crystal's nano-channels. From the number of excitable vibration quantum states of the confined iodine molecules determined from Raman spectra and the size of the nano-channels, we estimate the iodine atomic radius to be 2.10 ± 0.05 Å. It is the first time that atomic sizes, which are far beyond the optical diffraction limit, have be resolved optically using Raman spectroscopy with the help of nano-scale structures.
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89
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Liao K, Yan H, He J, Du S, Zhang ZM, Zhu SL. Subnatural-linewidth polarization-entangled photon pairs with controllable temporal length. PHYSICAL REVIEW LETTERS 2014; 112:243602. [PMID: 24996089 DOI: 10.1103/physrevlett.112.243602] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/11/2014] [Indexed: 06/03/2023]
Abstract
We demonstrate an efficient experimental scheme for producing polarization-entangled photon pairs from spontaneous four-wave mixing (SFWM) in a laser-cooled (85)Rb atomic ensemble, with a bandwidth (as low as 0.8 MHz) much narrower than the rubidium atomic natural linewidth. By stabilizing the relative phase between the two SFWM paths in a Mach-Zehnder interferometer configuration, we are able to produce all four Bell states. These subnatural-linewidth photon pairs with polarization entanglement are ideal quantum information carriers for connecting remote atomic quantum nodes via efficient light-matter interaction in a photon-atom quantum network.
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90
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Kivitz A, Maciag P, Gulati P, Du S, Connolly S, Davies P, Li X, Repsher T, Haggerty H, Londei M. THU0109 Lack of Efficacy of CCR1 Antagonist BMS-817399 in Patients with Moderate to Severe Rheumatoid Arthritis: Results of 12-Week Proof-Of-Concept Study. Ann Rheum Dis 2014. [DOI: 10.1136/annrheumdis-2014-eular.3871] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
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91
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Du S, Pellas T, van der Heijde D, Weinblatt M, Emery P, Zilberstein M, Conaghan P. SAT0210 X-Ray and MRI Results from A Phase Iib Study of Subcutaneous Anti-Interleukin-6 Monoclonal Antibody Clazakizumab with or without MTX in Adults with Moderate-To-Severe Active RA and Inadequate Response to Conventional DMARDS Including Methotrexate. Ann Rheum Dis 2014. [DOI: 10.1136/annrheumdis-2014-eular.1102] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
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92
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Deng X, Wang J, Du S, Li F, Lu L, Zhang H. Fabrication of Porous Ceramics by Direct Foaming. ACTA ACUST UNITED AC 2014. [DOI: 10.1007/bf03401041] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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93
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Harenberg J, Du S, Weiss C, Kramer S. C0313: Determination of Rivaroxaban, Apixaban and Dabigatran from Plasma Samples of Patients Using Citrate, EDTA and Prostaglandin-Citric Acid as Anticoagulant. Thromb Res 2014. [DOI: 10.1016/s0049-3848(14)50286-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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94
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Harenberg J, Du S, Weiss C, Krämer R, Hoppensteadt D, Walenga J. Report of the Subcommittee on Control of Anticoagulation on the determination of the anticoagulant effects of apixaban: communication from the SSC of the ISTH. J Thromb Haemost 2014; 12:801-4. [PMID: 24597497 DOI: 10.1111/jth.12547] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/23/2013] [Indexed: 01/05/2023]
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95
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Abstract
The thermic effect of food accounts for ~10% of daily energy expenditure. A reduction in the thermic effect of food, which has been variably observed in the older adults, could predispose to fat gain. We tested whether the thermic effect of food is reduced in older adults compared with young adults by analyzing our database of standardized studies conducted at the Mayo Clinic between 1999 and 2009. Data were available from 136 older adult volunteers aged 60-88 (56 females) and 141 young adults aged 18-35 years (67 females). Basal energy expenditure was measured by indirect calorimetry to assess basal metabolic rate. Body fat, fat free mass, and visceral fat were measured using a combination of dual energy X-ray absorptiometry and an abdominal CT scan. The thermic effect of food and postprandial insulinemia were measured in 123 older adults (52 females) and 86 young adults (38 females) of these volunteers. Basal metabolic rate adjusted for fat-free mass was less in older adults (p=0.01) and the thermic effect of food was ~1% (p=0.02) less in the older adults. After controlling for meal size and fat-free mass, body fat and fat distribution did not predict the thermic effect of food. Both basal metabolic rate and the thermic effect of food are less in older adults than young adults, even when they have similar amounts of lean tissue and consume a similar size meal. These factors contribute to lower daily energy expenditure in the older adults.
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96
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Harenberg J, Giese C, Du S, Weiss C. C0507: Heptest-Stat Coagulation Assay Determines Specifically Rivaroxaban, Apixaban and Dabigatran from Plasma Samples on Treatment. Thromb Res 2014. [DOI: 10.1016/s0049-3848(14)50110-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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97
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Chen P, Wang W, Lin N, Du S. Manipulating photon emission efficiency with local electronic states in a tunneling gap. OPTICS EXPRESS 2014; 22:8234-8242. [PMID: 24718199 DOI: 10.1364/oe.22.008234] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
We demonstrate manipulation of photon emission efficiency in a tunneling gap by tuning the rates of elastic and inelastic electron tunneling processes with local electronic states. The artificial local electronic states are created by a scanning tunneling microscope tip on a CuN nanoisland grown on a Cu(100) surface at cryogenic temperature. These local electronic states can either enhance or suppress the excitation of tip-induced surface plasmon modes at specific bias voltages, and thus the induced photon emission rates. A theoretical model quantitatively analyzing inelastic and elastic tunneling processes associated with characteristic electronic states shows good agreement with experiments. We also show that tip-induced photon emission measurement can be used for probing the electronic states in the tunneling gap.
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98
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Guo Y, Li P, Guo Q, Shang K, Yan D, Du S, Lu Y. Pathophysiology and Biomarkers in Acute Ischemic Stroke – A Review. TROP J PHARM RES 2014. [DOI: 10.4314/tjpr.v12i6.35] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
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99
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Li P, Lu Y, Du S, Bai J, Liu H, Guo Q, Guo Y. Extraction and Purification of Flavonoids from Radix Puerariae. TROP J PHARM RES 2014. [DOI: 10.4314/tjpr.v12i6.9] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
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100
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Li P, Lu Y, Du S, Liu H, Yan D. Investigation of Factors Affecting Microdialysis Probe Delivery and Recovery of Puerarin In Vitro. TROP J PHARM RES 2014. [DOI: 10.4314/tjpr.v12i6.5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
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