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658 results on '"Seger R"'

1. Nanopipette Apparatus for Manipulating Cells

Author

Seger, R. Adam, Actis, Paolo, Vilozny, Boaz, and Pourmand, Nader

Subjects
Chemistry And Materials (General)
Abstract

Disclosed herein are methods and systems for controlled ejection of desired material onto surfaces including in single cells using nanopipettes, as well as ejection onto and into cells. Some embodiments are directed to a method and system comprising nanopipettes combined with an xyz controller for depositing a user defined pattern on an arbitrary substrate for the purpose of controlled cell adhesion and growth. Alternate embodiments are directed to a method and system comprising nanopipettes combined with an xyz controller and electronic control of a voltage differential in a bore of the nanopipette electroosmotically injecting material into a cell in a high-throughput manner and with minimal damage to the cell. Yet other embodiments are directed to method and system comprising functionalized nanopipettes combined with scanning ion conductance microscopy for studying molecular interactions and detection of biomolecules inside a single living cell.

Published
2017

5. Nanopore Device for Reversible Ion and Molecule Sensing or Migration

Author

Pourmand, Nader, Vilozny, Boaz, Actis, Paolo, Seger, R. Adam, and Singaram, Bakthan

Subjects
Electronics And Electrical Engineering, Atomic And Molecular Physics
Abstract

Disclosed are methods and devices for detection of ion migration and binding, utilizing a nanopipette adapted for use in an electrochemical sensing circuit. The nanopipette may be functionalized on its interior bore with metal chelators for binding and sensing metal ions or other specific binding molecules such as boronic acid for binding and sensing glucose. Such a functionalized nanopipette is comprised in an electrical sensor that detects when the nanopipette selectively and reversibly binds ions or small molecules. Also disclosed is a nanoreactor, comprising a nanopipette, for controlling precipitation in aqueous solutions by voltage-directed ion migration, wherein ions may be directed out of the interior bore by a repulsing charge in the bore.

Published
2015

8. Metalloenzymes

Author

Pollard, J. W., Danilkovitch-Miagkova, A., Minaguchi, T., Waite, K. A., Buys, T. P. H., Lam, W. L., Müller-Hermelink, H. K., Ott, G., Robb, V. A., Henske, E. P., Lynge, E., Boyd, N., Geisler, C., Seger, R., De Wolf-Peeters, C., Sagaert, X., Sheng, S., Ribatti, D., Verstovsek, S., Akin, C., Stack, M. S., Kitada, S., Gartenhaus, R., Moretti, F., Frühwald, Michael C., Mooi, W. J., Krausz, T., Kefford, R., Peikert, T., Specks, U., Tueting, T., Pföhler, C., Blask, D. E., Stevens, R. G., Nies, A. T., Gotoh, N., Tsuchida, N., Escriba, P., Singh, V., Hickey, M., Saunders, C., Xiao, G.-H., Testa, J. R., Furtwängler, R., Scholler, N., Carbone, M., Furge, K., Woude, G. F. V., Roland, W. C., Muschel, R., Hunter, K., Welch, D. R., Vaidya, K. S., Hurst, D. R., Silveira, A. C., Zang, X. A., Bari, R., Silveira, A., Szmulewitz, R., Taylor, J., Rinker-Schaffer, C., Shim, H., Plass, C., Lindsey, J. C., Clifford, S. C., Holdenrieder, S., Steinle, A., Salih, H., Brown, D. A., Breit, S. N., Bauskin, A. R., Mousses, S., Lung, M. L., Alix-Panabieres, C., Pantel, K., Djuzenova, C. S., Dalmay, T., Ahlquist, T., Lothe, R. A., Bhat, K., Setaluri, V., Rutka, J. T., Salhia, B., Cockell, K. A., Radich, J. P., Yamagishi, S.-I., Bignami, M., Verma, M., Kumar, D., Brenner, C., Zhang, Y.-W., Jamieson, D., Chi, Y.-H., Jeang, K.-T., Roninson, I., Dragani, T., Sobolev, A. S., Powers, M. V., Workmann, P., Evans, M. F., Cooper, K., Kausch, I., Doehn, C., Janz, S., Huang, C.-L., Toland, A. E., Osinaga, E., Kaye, F., Lemos, M. C., Thakker, R. V., Teh, B. T., Ponder, B. A. J., Mulligan, L. M., Gullo, C., Klein, G., Wu, X., Araten, D. J., Loeb, L. A., Cheadle, J. P., Lipsick, J., Albihn, A., Henriksson, M., Kremens, B., Germing, U., Zangemeister-Wittke, U., Simon, H.-U., Yu, Y. P., Luo, J., and Aman, P.

Published
2020

9. Metallothionein enzymes

Author

Pollard, J. W., Danilkovitch-Miagkova, A., Minaguchi, T., Waite, K. A., Buys, T. P. H., Lam, W. L., Müller-Hermelink, H. K., Ott, G., Robb, V. A., Henske, E. P., Lynge, E., Boyd, N., Geisler, C., Seger, R., De Wolf-Peeters, C., Sagaert, X., Sheng, S., Ribatti, D., Verstovsek, S., Akin, C., Stack, M. S., Kitada, S., Gartenhaus, R., Moretti, F., Frühwald, Michael C., Mooi, W. J., Krausz, T., Kefford, R., Peikert, T., Specks, U., Tueting, T., Pföhler, C., Blask, D. E., Stevens, R. G., Nies, A. T., Gotoh, N., Tsuchida, N., Escriba, P., Singh, V., Hickey, M., Saunders, C., Xiao, G.-H., Testa, J. R., Furtwängler, R., Scholler, N., Carbone, M., Furge, K., Woude, G. F. V., Roland, W. C., Muschel, R., Hunter, K., Welch, D. R., Vaidya, K. S., Hurst, D. R., Silveira, A. C., Zang, X. A., Bari, R., Silveira, A., Szmulewitz, R., Taylor, J., Rinker-Schaffer, C., Shim, H., Plass, C., Lindsey, J. C., Clifford, S. C., Holdenrieder, S., Steinle, A., Salih, H., Brown, D. A., Breit, S. N., Bauskin, A. R., Mousses, S., Lung, M. L., Alix-Panabieres, C., Pantel, K., Djuzenova, C. S., Dalmay, T., Ahlquist, T., Lothe, R. A., Bhat, K., Setaluri, V., Rutka, J. T., Salhia, B., Cockell, K. A., Radich, J. P., Yamagishi, S.-I., Bignami, M., Verma, M., Kumar, D., Brenner, C., Zhang, Y.-W., Jamieson, D., Chi, Y.-H., Jeang, K.-T., Roninson, I., Dragani, T., Sobolev, A. S., Powers, M. V., Workmann, P., Evans, M. F., Cooper, K., Kausch, I., Doehn, C., Janz, S., Huang, C.-L., Toland, A. E., Osinaga, E., Kaye, F., Lemos, M. C., Thakker, R. V., Teh, B. T., Ponder, B. A. J., Mulligan, L. M., Gullo, C., Klein, G., Wu, X., Araten, D. J., Loeb, L. A., Cheadle, J. P., Lipsick, J., Albihn, A., Henriksson, M., Kremens, B., Germing, U., Zangemeister-Wittke, U., Simon, H.-U., Yu, Y. P., Luo, J., and Aman, P.

Published
2020

47. Sensitive Detection and Early Prognostic Significance of p24 Antigen in Heat-Denatured Plasma of Human Immunodeficiency Virus Type 1-Infected Infants

Author

Schupbach, J, Doni, J, Tomasik, Z, Jendis, J, Seger, R, Kind, C, University of Zurich, and Schupbach, J

Subjects
2723 Immunology and Allergy, 570 Life sciences, biology, 610 Medicine & health, 2725 Infectious Diseases, 142-005 142-005
Abstract

Immune complex formation causes underdetection of p24 antigen in human immunodeficiencyvirus(HIV)infection.Brieflyboilingdilutedplasma releasesallcomplexedantigen, which can then be measured by some commercial assays. In a retrospective pediatric cohort study, the specificity of this procedure in 390 uninfected samples was 96.9% after initial testing and 100% after neutralization. Sensitivity among 125 postnatal infected samples was, at a detection of 2 pg/ml., 96.0% (97% neutralizable) compared with 47.7% for regular antigen (76% neutralizable), 96% for polymerase chain reaction, and 77% for viral culture. The high sensitivity and specificity of heat-denatured antigen was confirmed by prospectively testing 113 additional samples.Quantitativeanalysisofsamplesfrominfectedinfants showedlowlevelsofp24 antigen in 29% of cord blood sera, a postnatal increase to levels that were during the first 6 months of life inversely associated with survival, and persistence of antigenemia thereafter independent of clinical status. Prevalence and antigen levels were significantly lower in mothers. The persistent antigenemia in children indicates that their immune systems cannot restrict HIV expression as efficiently as those of adults

Published
2017

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