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2. Saturday, 25 August 2012

Author

A. Welz, B. V. Antwerp, A Di Cori, A. Hager, P. Hatzigiannis, R. De Lucia, C. Yu, A. Apor, M. Niemann, R. Sampognaro, M. Fiuza, M. G. Charlot, N. Cortez Dias, A. Nagae, A. Maciag, T. Sato, M. Valgimigli, D. Levorato, S. Herrmann, T. Kimura, M. Luedde, V. Tzamou, M. Iwabuchi, C. Rickers, J. Sobierajski, J. Vecera, C. Vlachopoulos, K. Goscinska-Bis, S. Goldsmith, H. Ueno, J. Sosna, G. Malerba, W. Li, H. W. Lee, K. Bogaard, K. Yamada, A. Mateo-Martinez, J. Navarova, M. Zeman, K. Dimopoulos, M. P. Lopez Lereu, E. Pelissero, B. Gersak, J. M. Tolosana, S Manzano Fernandez, P. Mertens, J. J. M. Takkenberg, J. W. Kim, R.T. van Domburg, G. P. Diller, H. M. Yang, F. Gustafsson, P. G. Golzio, G. S. Hwang, J. Brugada, S. Stoerk, J. Hess, Y. Cavusoglu, L. Segreti, M. E. Trucco, C. Jacoby, I. Bafakis, T. Isshiuki, L. Pulpon, S. Pires, L. Paperini, A. Cremonesi, H. Baumgartner, C. Tsioufis, M. Valdes-Chavarri, S. Schaefer, M. Totzeck, A. Bochenek, F. Saia, P. Carrilho-Ferreira, M. Khatib, E. M. W. J. Utens, G. Zucchelli, R. Jenni, E. Gencer, N. Carter, A. Kovacs, C. Linde, V. Monivas, A. Marzocchi, L. Baerfacker, L. Mont, R. Weber, F. J. Enguita, T. L. Bergemann, M. Chudzik, A. Chernyavskiy, D. Dragulescu, S. Orwat, B. J. Choi, P. Opic, C. Torp-Pedersen, F. Gaita, V. A. W. M. Umans, A. Lopez-Cuenca, S. B. Christensen, E. C. Bertolino, D. Tousoulis, F. Weidemann, H. H. Kramer, J. Greenslade, J Cosin Sales, M. Gonzalez Estecha, W. Grosso Marra, T. Katsimichas, J. Hoerer, S. Mingo, M. Hochadel, M. A. Castel, M. S. Lattarulo, E. Y. Yun, K. Fattouch, H. S. Lim, A. Uebing, T. Ulus, J. Radosinska, A. Castro Beiras, J. Peteiro, M. Koren, C. Prados, A. Nunes, C. Rammos, C. Thomopoulos, T. Kameyama, F. Borgia, I. Voges, J. L. Looi, L. Cullen, C. Campo, J. Bis, S. Shiva, H. Kato, N. Frey, E. Andrikou, G. H. Gislason, J. Ruvira, A. Kasiakogias, S. Robalo Martins, A. M. Zimmer, M. H. Yacoub, M. Nobuyoshi, U. Zeymer, K. Hanazawa, F. J. Broullon, B. Petracci, K. Hu, A. Petrescu, A. M. Maceira Gonzalez, K. Harada, L. Swan, C. Felix, H. Inoue, T. Haraguchi, N. Cortez-Dias, S. Bisetti, P. Mitkowski, C. Daubert, H. J. Heuvelman, M. R. Gold, G. P. Kimman, O. Gaemperli, H. C. Lee, Y. Takasawa, V. Monivas Palomero, A. C. Andrade, S. Maddock, W. Budts, M. Penicka, F. J. Ten Cate, M. Czajkowski, C. D. Nguyen, K. Kaitani, K. Kintis, S. Castrovinci, D. Liu, T. Benova, K. W. Seo, B. A. Herzog, A. Ionac, C. Jorge, M. Iacoviello, S. Kuramitsu, Y. Nakagawa, K. U. Mert, A. Manari, S. Brili, R. Alonso-Gonzalez, A. J. Six, J. S. Mcghie, A. Goedecke, M. Kelm, F. C. Tanner, F. Marin, C. I. Santos De Sousa, L. Kober, M. Frigerio, D. Adam, B. E. Backus, U. Hendgen-Cotta, A. Belo, D. Couto Mallon, M. Dewor, M. Madsen, J. H. Shin, M. H. Yoon, L. Maiz, P. Lancellotti, A. Nunes Diogo, G. Ertl, R. Pietura, A. Mornos, M. Than, C. Andersson, C. Izumi, E. Liodakis, N. van Boven, Y. Y. Lam, T. Hansen, W. Roell, T. J. Hong, P. Luedicke, M. Sanchez-Martinez, L. Ruiz Bautista, E. N. Oechslin, T. Klaas, M. T. Martinez, W. A. Helbing, J. L. Januzzi, S. Parra-Pallares, A. Romanov, B. Sax, D. Prokhorova, P. Guastaroba, D. Silva, A. Karaskov, P. Kolkhof, B. Bouzas Zubeldia, T. Rassaf, M. Costa, C. Viczenczova, V. Antoncecchi, A. Kempny, J. Bartunek, I. Kardys, J. H. Ahn, C. Hart, A. Berruezo, C. Vittori, W. Vletter, M. Shigekiyo, S. Knob, V. Marangelli, R. Borras, A E Van Den Bosch, S. Y. Choi, E. Arbelo, G. Lazaros, T. Arita, G. Suchan, T. Nakadate, D. Van Der Linde, E. Pokushalov, K. Ando, J. Neutel, P. Biaggi, C. Mornos, R. Corti, M. Landolina, B. Merkely, B. Malecka, H. J. Hippe, S. J. Tahk, J. Aguilar, G. Piovaccari, M. Lutz, D. Rizopoulos, N. Alvarez Garcia, M. Cipriani, T. Kumamoto, S. Kubota, M. Sitges, B. K. Fleischmann, G. Caccamo, D. Tsiachris, M. A. Russ, F. Mutlu, A. Menozzi, J. C. Choi, J. V. Monmeneu, J. C. Yanez Wonenburger, N. Tribulova, C. Forleo, M. Vinci, J. W. Roos-Hesselink, O. Bodea, T. Domei, P. W. Lee, A. Puzzovivo, M. Heikenwaelder, F. Ferraris, C. Stefanadis, M. Kempa, M. Vanderheyden, A. Birdane, J. A. A. E. Cuypers, I. Andrikou, G. Casella, P. Stock, S. Favale, B. Bijnens, A. Kretschmer, J. Bernhagen, M. A. Cavero Gibanel, S. Datta, M. E. Menting, S. Viani, T. Heuft, M. Cikes, A. J. J. C. Bogers, J. Estornell, M. Pham, A. Nadir, F. J. Pinto, M. Hyodo, D. Flessas, C. Chrysohoou, O. Dewald, B. Ren, K. Wustmann, J. C. Burnett, T. Noto, G. Ruvolo, M. Witsenburg, E. Soldati, G. D. Duerr, L. Alonso Pulpon, J. H. Oh, A. Zabek, B. Albrecht-Kuepper, V. Antonakis, M. B. Nielsen, T. Huttl, B. Bacova, A. Piorkowski, I. Z. Cabrita, A. Fanelli, M. A. Weber, J. Segovia, A. I. Romero-Aniorte, J. H. Choi, V. Dosenko, C. Wackerl, J. H. Ruiter, H. Yokoi, S. Ghio, V. Knezl, F. Monitillo, M. Morello, M. Jerosch-Herold, M. L. Geleijnse, A. Bouzas Mosquera, R. Fabregas Casal, H. Mudra, J. Gruenenfelder, U. Floegel, L. Petrescu, M. A. Gatzoulis, S. Shizuta, J. Brachmann, M. G. Bongiorni, M. Pringsheim, J. Mueller, A. Nagy, R. Giron, W. T. Abraham, Y. Takabatake, F. Toyota, D. Martinez Ruiz, M. Lunati, S. Vargiu, L E De Groot De Laat, V. Shabanov, L. Lioni, R. Kast, D. Bettex, K. S. Cha, J. L. Diago, D. Cozma, H. Lieu, M. Giakoumis, E. Orenes-Pinero, G. Murana, A. Kutarski, A.P.J. van Dijk, G. Speziale, A. Boem, L. M. Belotti, B. Igual, A. M. S. Olsen, and H. Lue

Subjects
business.industry, Medicine, Ancient history, Cardiology and Cardiovascular Medicine, business
Published
2012
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3. Proinflammatory and prothrombotic effects on human vascular endothelial cells of Immune-cell-derived LIGHT

Author

Hugo A. Katus, Christian Erbel, S. Celik, S. Urban, N. Blank, N. Wambsganss, Thomas J. Dengler, A. Richter, Florian Bea, Vijay Shankar, Mohammadreza Akhavanpoor, and H.-J. Hippe

Subjects
Umbilical Veins, T-Lymphocytes, Gene Expression, lcsh:Medicine, Arthritis, Rheumatoid, Macrophage, IL-2 receptor, Cells, Cultured, Ionomycin, Cell Differentiation, General Medicine, Middle Aged, Intercellular Adhesion Molecule-1, endothelial cells, Up-Regulation, Drug Combinations, medicine.anatomical_structure, LIGHT, Tetradecanoylphorbol Acetate, Female, Tumor necrosis factor alpha, Adult, Tumor Necrosis Factor Ligand Superfamily Member 14, medicine.medical_specialty, Adolescent, T cell, Enzyme-Linked Immunosorbent Assay, Biology, Thromboplastin, Young Adult, Immune system, Antigen, Internal medicine, medicine, Humans, RNA, Messenger, Antigen-presenting cell, Aged, CD40, Research, Macrophages, Interleukin-8, lcsh:R, Hepatitis C, Chronic, Molecular biology, Molecular Weight, Endocrinology, inflammation, Leukocytes, Mononuclear, biology.protein, Endothelium, Vascular
Abstract

Objective LIGHT (TNFSF 14) belongs to the tumor necrosis factor superfamily and is expressed by activated T cells as well as various types of antigen presenting cells. LIGHT binds to its cellular receptors TR2 and LTßR and has a co-stimulatory role in T cell activation. Here, we compared the relative expression of LIGHT in different immune cells and the biological activity of immune cell-derived LIGHT on endothelial cells. Methods and Results Surface expression of LIGHT and mRNA production by PBMC and isolated T cells (CD4+ or CD8+) significantly increased after stimulation with PMA (Phorbolester-12-Myristat-13-Acetat) + ionomycin. No LIGHT expression on PMA stimulated monocytes or monocytic-like THP-1 cells could be detected; differentiation of monocytes and THP-1 cells into macrophages, however, resulted in up-regulation of LIGHT. Supernatants of stimulated T cells contained higher concentrations of soluble LIGHT than macrophage supernatants normalized to cell numbers; release of soluble LIGHT was found to be dependent on metalloproteinase activity. Size determination of released soluble LIGHT by size exclusion chromatography revealed a molecular mass of ~60 kDa, suggesting a trimeric form. Released soluble LIGHT induced expression of proinflammatory antigens ICAM-1, tissue factor and IL-8 in human endothelial cells and caused apoptosis of IFN-γ pretreated endothelial cells. Soluble LIGHT was detected at low levels in sera of healthy controls and was significantly enhanced in sera of patients with chronic hepatitis C and rheumatoid arthritis (24.93 ± 9.41 vs.129.53 ± 49.14 and 172.13 ± 77.64; p < 0.0005). Conclusion These findings suggest that among immune cells activated T lymphocytes are the main source of soluble LIGHT with released amounts of soluble LIGHT markedly higher compared to platelets. Immune cell-derived membrane-bound and soluble trimeric LIGHT is biologically active, inducing proinflammatory changes in endothelial cells. Enhanced plasma levels of soluble LIGHT in patients with chronic infections suggest a role of LIGHT in systemic inflammatory activation.

Published
2009

4. Nambu-Jona-Lasinio model compared with chiral perturbation theory: The pion radius in SU(2) revisited

Author

S. P. Klevansky and H.-J. Hippe

Subjects
Quark, Physics, Nuclear and High Energy Physics, Particle physics, Current quark, Chiral perturbation theory, Pion, Meson, Charge radius, High Energy Physics::Lattice, Nambu–Jona-Lasinio model, High Energy Physics::Phenomenology, Special unitary group
Abstract

A calculation of the pion radius to O(1/${\mathit{N}}_{\mathit{c}}$) in the Nambu\char21{}Jona-Lasinio model indicates that the chiral logarithmic term of chiral perturbation theory (CHPT) is recovered from the higher order corrections in the static limit in the Pauli-Villars regularization scheme, and with \ensuremath{\Lambda}\ensuremath{\rightarrow}\ensuremath{\infty}. This follows equivalently in the O(3) scheme under the assumption that \ensuremath{\Lambda}\ensuremath{\gg}m. The chiral logarithm is the leading contribution in the chiral limit. However, at the physical values of the current quark mass, the constant term due to the intrinsic structure of the pion plays the key role. This intrinsic term is the usual term that arises from the photon coupling to the internal quark and antiquark structure that makes up the pion, and corresponds to the tree level calculation in CHPT. At physical values of the current quark masses, it turns out that this term is the leading one, with the chiral logarithmic term being subleading. From the values obtained for 〈${\mathit{r}}_{\mathrm{\ensuremath{\pi}}}^{2}$〉, we can also set an upper limit for the contribution expected from the \ensuremath{\rho} meson. This is determined as 〈${\mathit{r}}_{\mathrm{\ensuremath{\pi}}}^{2}$${\mathrm{〉}}_{\mathrm{\ensuremath{\rho}}}$(0.4) ${\mathrm{fm}}^{2}$. A redetermination of l${\mathrm{\ifmmode\bar\else\textasciimacron\fi{}}}_{6}$ including the higher order contribution gives l${\mathrm{\ifmmode\bar\else\textasciimacron\fi{}}}_{6}$=16.07. The finite temperature dependence of the mean square charge radius is also examined, and its behavior is determined principally by the intrinsic part.

Published
1995

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