Search Results - "VINOGRADOV, Sergei A."
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Oxyphor 2P: A High-Performance Probe for Deep-Tissue Longitudinal Oxygen Imaging
Published in Cell metabolism (05-03-2019)“…Quantitative imaging of oxygen distributions in tissue can provide invaluable information about metabolism in normal and diseased states. Two-photon…”
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Direct measurement of local oxygen concentration in the bone marrow of live animals
Published in Nature (London) (10-04-2014)“…Here, using two-photon phosphorescence lifetime microscopy, the local oxygen tension in the bone marrow of live mice is found to be quite low, with…”
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Correlation Between Intraluminal Oxygen Gradient and Radial Partitioning of Intestinal Microbiota
Published in Gastroenterology (New York, N.Y. 1943) (01-11-2014)“…Background & Aims The gut microbiota is a complex and densely populated community in a dynamic environment determined by host physiology. We investigated how…”
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4
Live-animal imaging of native haematopoietic stem and progenitor cells
Published in Nature (London) (13-02-2020)“…The biology of haematopoietic stem cells (HSCs) has predominantly been studied under transplantation conditions 1 , 2 . It has been particularly challenging to…”
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5
Microbes vs. chemistry in the origin of the anaerobic gut lumen
Published in Proceedings of the National Academy of Sciences - PNAS (17-04-2018)“…The succession from aerobic and facultative anaerobic bacteria to obligate anaerobes in the infant gut along with the differences between the compositions of…”
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Quantification of Oxygen Depletion During FLASH Irradiation In Vitro and In Vivo
Published in International journal of radiation oncology, biology, physics (01-09-2021)“…Delivery of radiation at ultrahigh dose rates (UHDRs), known as FLASH, has recently been shown to preferentially spare normal tissues from radiation damage…”
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CENP-C reshapes and stabilizes CENP-A nucleosomes at the centromere
Published in Science (American Association for the Advancement of Science) (08-05-2015)“…Inheritance of each chromosome depends upon its centromere. A histone H3 variant, centromere protein A (CENP-A), is essential for epigenetically marking…”
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Two-photon high-resolution measurement of partial pressure of oxygen in cerebral vasculature and tissue
Published in Nature methods (01-09-2010)“…Two-photon excitation of a phosphorescent nanoprobe that is quenched by molecular oxygen permits high-resolution measurements of oxygen in both the vasculature…”
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Spin–Orbit versus Hyperfine Coupling-Mediated Intersystem Crossing in a Radical Pair
Published in The journal of physical chemistry. A, Molecules, spectroscopy, kinetics, environment, & general theory (27-04-2023)“…While spin–orbit coupling (SOC) is typically the dominant interaction that couples singlet and triplet states within individual chromophores, hyperfine…”
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10
Two New “Protected” Oxyphors for Biological Oximetry: Properties and Application in Tumor Imaging
Published in Analytical chemistry (Washington) (15-11-2011)“…We report the synthesis, calibration, and examples of application of two new phosphorescent probes, Oxyphor R4 and Oxyphor G4, optimized specifically for in…”
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Electrospun Fiber Mesh for High-Resolution Measurements of Oxygen Tension in Cranial Bone Defect Repair
Published in ACS applied materials & interfaces (18-09-2019)“…Tissue oxygenation is one of the key determining factors in bone repair and bone tissue engineering. Adequate tissue oxygenation is essential for survival and…”
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Gold Tris(carboxyphenyl)corroles as Multifunctional Materials: Room Temperature Near-IR Phosphorescence and Applications to Photodynamic Therapy and Dye-Sensitized Solar Cells
Published in ACS applied materials & interfaces (27-07-2016)“…Two amphiphilic corroles5,10,15-tris(3-carboxyphenyl)corrole (H3[mTCPC]) and 5,10,15-tris(4-carboxyphenyl)corrole (H3[pTCPC])and their gold complexes…”
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13
Magnetic Field Effects on Triplet–Triplet Annihilation in Solutions: Modulation of Visible/NIR Luminescence
Published in The journal of physical chemistry letters (05-09-2013)“…Photon upconversion based on sensitized triplet–triplet annihilation (TTA) presents interest for such areas as photovoltaics and imaging. Usually, energy…”
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14
More homogeneous capillary flow and oxygenation in deeper cortical layers correlate with increased oxygen extraction
Published in eLife (15-07-2019)“…Our understanding of how capillary blood flow and oxygen distribute across cortical layers to meet the local metabolic demand is incomplete. We addressed this…”
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Tissue pO2 distributions in xenograft tumors dynamically imaged by Cherenkov-excited phosphorescence during fractionated radiation therapy
Published in Nature communications (29-01-2020)“…Hypoxia in solid tumors is thought to be an important factor in resistance to therapy, but the extreme microscopic heterogeneity of the partial pressures of…”
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Endothermic and Exothermic Energy Transfer Made Equally Efficient for Triplet–Triplet Annihilation Upconversion
Published in The journal of physical chemistry letters (02-01-2020)“…Expanding the anti-Stokes shift for triplet–triplet annihilation upconversion (TTA-UC) systems with high quantum yields without compromising power density…”
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In vivo imaging and analysis of cerebrovascular hemodynamic responses and tissue oxygenation in the mouse brain
Published in Nature protocols (01-06-2018)“…A series of diverse in vivo imaging protocols for evaluating hemodynamic response and tissue oxygenation in mouse models of neurological and vascular disorders…”
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Frontiers in Optical Imaging of Cerebral Blood Flow and Metabolism
Published in Journal of Cerebral Blood Flow & Metabolism (01-07-2012)“…In vivo optical imaging of cerebral blood flow (CBF) and metabolism did not exist 50 years ago. While point optical fluorescence and absorption measurements of…”
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Dendritic upconverting nanoparticles enable in vivo multiphoton microscopy with low-power continuous wave sources
Published in Proceedings of the National Academy of Sciences - PNAS (18-12-2012)“…We report a group of optical imaging probes, comprising upconverting lanthanide nanoparticles (UCNPs) and polyanionic dendrimers. Dendrimers with rigid cores…”
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Disruption of intestinal oxygen balance in acute colitis alters the gut microbiome
Published in Gut microbes (31-12-2024)“…The juxtaposition of well-oxygenated intestinal colonic tissue with an anerobic luminal environment supports a fundamentally important relationship that is…”
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