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  1. Article ; Online: Laboratory Investigation of Hybrid IgG4 k/λ in MuSK Positive Myasthenia Gravis.

    Basile, Umberto / Napodano, Cecilia / Gulli, Francesca / Pocino, Krizia / Di Santo, Riccardo / Todi, Laura / Basile, Valerio / Provenzano, Carlo / Ciasca, Gabriele / Marino, Mariapaola

    International journal of molecular sciences

    2021  Volume 22, Issue 17

    Abstract: ... resulting MuSK IgG4 k/λ Abs increase their interference on NMJ and pathogenicity. The characterization ... hybrid IgG4 k/λ, and the hybrid/total ratio in 14 MuSK-MG sera in comparison with 24 from MG with Abs ...

    Abstract Myasthenia gravis with antibodies (Abs) against the muscle-specific tyrosine kinase (MuSK) is a rare autoimmune disorder (AD) of the neuromuscular junction (NMJ) and represents a prototype of AD with proven IgG4-mediated pathogenicity. Thanks to the mechanism of Fab-arm exchange (FAE) occurring in vivo, resulting MuSK IgG4 k/λ Abs increase their interference on NMJ and pathogenicity. The characterization of hybrid MuSK IgG4 as a biomarker for MG management is poorly investigated. Here, we evaluated total IgG4, hybrid IgG4 k/λ, and the hybrid/total ratio in 14 MuSK-MG sera in comparison with 24 from MG with Abs against acetylcholine receptor (AChR) that represents the not IgG4-mediated MG form. In both subtypes of MG, we found that the hybrid/total ratio reflects distribution reported in normal individuals; instead, when we correlated the hybrid/total ratio with specific immune-reactivity we found a positive correlation only with anti-MuSK titer, with a progressive increase of hybrid/total mean values with increasing disease severity, indirectly confirming that most part of hybrid IgG4 molecules are engaged in the anti-MuSK pathogenetic immune-reactivity. Further analysis is necessary to strengthen the significance of this less unknown biomarker, but we retain it is full of a diagnostic-prognostic powerful potential for the management of MuSK-MG.
    MeSH term(s) Biomarkers/blood ; Humans ; Immunoglobulin G/blood ; Immunoglobulin G/immunology ; Myasthenia Gravis/blood ; Myasthenia Gravis/immunology ; Neuromuscular Junction/metabolism ; Neuromuscular Junction/pathology ; Receptor Protein-Tyrosine Kinases/immunology ; Receptors, Cholinergic/immunology
    Chemical Substances Biomarkers ; Immunoglobulin G ; Receptors, Cholinergic ; MUSK protein, human (EC 2.7.10.1) ; Receptor Protein-Tyrosine Kinases (EC 2.7.10.1)
    Language English
    Publishing date 2021-08-24
    Publishing country Switzerland
    Document type Journal Article
    ZDB-ID 2019364-6
    ISSN 1422-0067 ; 1422-0067 ; 1661-6596
    ISSN (online) 1422-0067
    ISSN 1422-0067 ; 1661-6596
    DOI 10.3390/ijms22179142
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  2. Article ; Online: Laboratory Investigation of Hybrid IgG4 k/λ in MuSK Positive Myasthenia Gravis

    Umberto Basile / Cecilia Napodano / Francesca Gulli / Krizia Pocino / Riccardo Di Santo / Laura Todi / Valerio Basile / Carlo Provenzano / Gabriele Ciasca / Mariapaola Marino

    International Journal of Molecular Sciences, Vol 22, Iss 9142, p

    2021  Volume 9142

    Abstract: ... resulting MuSK IgG4 k/λ Abs increase their interference on NMJ and pathogenicity. The characterization ... hybrid IgG4 k/λ, and the hybrid/total ratio in 14 MuSK-MG sera in comparison with 24 from MG with Abs ...

    Abstract Myasthenia gravis with antibodies (Abs) against the muscle-specific tyrosine kinase (MuSK) is a rare autoimmune disorder (AD) of the neuromuscular junction (NMJ) and represents a prototype of AD with proven IgG4-mediated pathogenicity. Thanks to the mechanism of Fab-arm exchange (FAE) occurring in vivo, resulting MuSK IgG4 k/λ Abs increase their interference on NMJ and pathogenicity. The characterization of hybrid MuSK IgG4 as a biomarker for MG management is poorly investigated. Here, we evaluated total IgG4, hybrid IgG4 k/λ, and the hybrid/total ratio in 14 MuSK-MG sera in comparison with 24 from MG with Abs against acetylcholine receptor (AChR) that represents the not IgG4-mediated MG form. In both subtypes of MG, we found that the hybrid/total ratio reflects distribution reported in normal individuals; instead, when we correlated the hybrid/total ratio with specific immune-reactivity we found a positive correlation only with anti-MuSK titer, with a progressive increase of hybrid/total mean values with increasing disease severity, indirectly confirming that most part of hybrid IgG4 molecules are engaged in the anti-MuSK pathogenetic immune-reactivity. Further analysis is necessary to strengthen the significance of this less unknown biomarker, but we retain it is full of a diagnostic-prognostic powerful potential for the management of MuSK-MG.
    Keywords biomarker ; antibodies ; personalized medicine ; IgG4 ; Fab-arm exchange ; hybrid k/λ ; Biology (General) ; QH301-705.5 ; Chemistry ; QD1-999
    Language English
    Publishing date 2021-08-01T00:00:00Z
    Publisher MDPI AG
    Document type Article ; Online
    Database BASE - Bielefeld Academic Search Engine (life sciences selection)

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  3. Article ; Online: Glucose elicits cephalic-phase insulin release in mice by activating K

    Glendinning, John I / Frim, Yonina G / Hochman, Ayelet / Lubitz, Gabrielle S / Basile, Anthony J / Sclafani, Anthony

    American journal of physiology. Regulatory, integrative and comparative physiology

    2017  Volume 312, Issue 4, Page(s) R597–R610

    Abstract: ... however, for taste-mediated attraction to sugars. Given that Sur1 is a subunit of the ATP-sensitive K ...

    Abstract The taste of sugar elicits cephalic-phase insulin release (CPIR), which limits the rise in blood glucose associated with meals. Little is known, however, about the gustatory mechanisms that trigger CPIR. We asked whether oral stimulation with any of the following taste stimuli elicited CPIR in mice: glucose, sucrose, maltose, fructose, Polycose, saccharin, sucralose, AceK, SC45647, or a nonmetabolizable sugar analog. The only taste stimuli that elicited CPIR were glucose and the glucose-containing saccharides (sucrose, maltose, Polycose). When we mixed an α-glucosidase inhibitor (acarbose) with the latter three saccharides, the mice no longer exhibited CPIR. This revealed that the carbohydrates were hydrolyzed in the mouth, and that the liberated glucose triggered CPIR. We also found that increasing the intensity or duration of oral glucose stimulation caused a corresponding increase in CPIR magnitude. To identify the components of the glucose-specific taste-signaling pathway, we examined the necessity of Calhm1, P2X2+P2X3, SGLT1, and Sur1. Among these proteins, only Sur1 was necessary for CPIR. Sur1 was not necessary, however, for taste-mediated attraction to sugars. Given that Sur1 is a subunit of the ATP-sensitive K
    MeSH term(s) Administration, Oral ; Animals ; Female ; Glucose/administration & dosage ; Insulin/blood ; Insulin/metabolism ; Insulin Secretion ; Ion Channel Gating/physiology ; KATP Channels/metabolism ; Mice ; Mice, Inbred C57BL ; Taste Buds/cytology ; Taste Buds/drug effects ; Taste Buds/physiology
    Chemical Substances Insulin ; KATP Channels ; Glucose (IY9XDZ35W2)
    Language English
    Publishing date 2017-02-01
    Publishing country United States
    Document type Journal Article
    ZDB-ID 603839-6
    ISSN 1522-1490 ; 0363-6119
    ISSN (online) 1522-1490
    ISSN 0363-6119
    DOI 10.1152/ajpregu.00433.2016
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  4. Article ; Online: Ultrafast isomerization in acetylene dication after carbon K-shell ionization.

    Li, Zheng / Inhester, Ludger / Liekhus-Schmaltz, Chelsea / Curchod, Basile F E / Snyder, James W / Medvedev, Nikita / Cryan, James / Osipov, Timur / Pabst, Stefan / Vendrell, Oriol / Bucksbaum, Phil / Martinez, Todd J

    Nature communications

    2017  Volume 8, Issue 1, Page(s) 453

    Abstract: Ultrafast proton migration and isomerization are key processes for acetylene and its ions. However, the mechanism for ultrafast isomerization of acetylene [HCCH] ...

    Abstract Ultrafast proton migration and isomerization are key processes for acetylene and its ions. However, the mechanism for ultrafast isomerization of acetylene [HCCH]
    Language English
    Publishing date 2017-09-06
    Publishing country England
    Document type Journal Article ; Research Support, Non-U.S. Gov't ; Research Support, U.S. Gov't, Non-P.H.S.
    ISSN 2041-1723
    ISSN (online) 2041-1723
    DOI 10.1038/s41467-017-00426-6
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  5. Article ; Online: Hyperpolarization of Frozen Hydrocarbon Gases by Dynamic Nuclear Polarization at 1.2 K.

    Vuichoud, Basile / Canet, Estel / Milani, Jonas / Bornet, Aurélien / Baudouin, David / Veyre, Laurent / Gajan, David / Emsley, Lyndon / Lesage, Anne / Copéret, Christophe / Thieuleux, Chloé / Bodenhausen, Geoffrey / Koptyug, Igor / Jannin, Sami

    The journal of physical chemistry letters

    2016  Volume 7, Issue 16, Page(s) 3235–3239

    Abstract: ... to the surface of the mesopores. DNP is performed at low temperatures and moderate magnetic fields (T = 1.2 K and ...

    Abstract We report a simple and general method for the hyperpolarization of condensed gases by dynamic nuclear polarization (DNP). The gases are adsorbed in the pores of structured mesoporous silica matrices known as HYPSOs (HYper Polarizing SOlids) that have paramagnetic polarizing agents covalently bound to the surface of the mesopores. DNP is performed at low temperatures and moderate magnetic fields (T = 1.2 K and B0 = 6.7 T). Frequency-modulated microwave irradiation is applied close to the electron spin resonance frequency (f = 188.3 GHz), and the electron spin polarization of the polarizing agents of HYPSO is transferred to the nuclear spins of the frozen gas. A proton polarization as high as P((1)H) = 70% can be obtained, which can be subsequently transferred to (13)C in natural abundance by cross-polarization, yielding up to P((13)C) = 27% for ethylene.
    Language English
    Publishing date 2016-08-18
    Publishing country United States
    Document type Journal Article
    ISSN 1948-7185
    ISSN (online) 1948-7185
    DOI 10.1021/acs.jpclett.6b01345
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  6. Book ; Online: Resonance frequency shift of silicon cantilevers heated from 300 K up to the melting point

    Pottier, Basile / Aguilar, Felipe / Geitner, Mickaël / Melo, Francisco / Bellon, Ludovic

    2020  

    Abstract: When heated, micro-resonators present a shift of their resonance frequencies. We study specifically silicon cantilevers heated locally by laser absorption, and evaluate theoretically and experimentally their temperature profile and its interplay with the ...

    Abstract When heated, micro-resonators present a shift of their resonance frequencies. We study specifically silicon cantilevers heated locally by laser absorption, and evaluate theoretically and experimentally their temperature profile and its interplay with the mechanical resonances. We include both elasticity and geometry temperature dependency, showing that the latter can account for 20% of the observed shift for the first flexural mode. The temperature profile description takes into account thermal clamping conditions, radiation at high temperature, and lower conductivity than bulk silicon due to phonon confinement. Thanks to a space-power equivalence in the heat equation, scanning the heating point along the cantilever directly reveals the temperature profile. Finally, frequency shift measurement can be used to infer the temperature field with a few percent precision.
    Keywords Condensed Matter - Materials Science ; Condensed Matter - Statistical Mechanics ; Physics - Classical Physics ; Physics - Instrumentation and Detectors
    Subject code 621
    Publishing date 2020-12-01
    Publishing country us
    Document type Book ; Online
    Database BASE - Bielefeld Academic Search Engine (life sciences selection)

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  7. Article ; Online: Spin Noise Detection of Nuclear Hyperpolarization at 1.2 K.

    Pöschko, Maria Theresia / Vuichoud, Basile / Milani, Jonas / Bornet, Aurélien / Bechmann, Matthias / Bodenhausen, Geoffrey / Jannin, Sami / Müller, Norbert

    Chemphyschem : a European journal of chemical physics and physical chemistry

    2015  Volume 16, Issue 18, Page(s) 3859–3864

    Abstract: ... irradiated by a microwave field at a temperature of 1.2 K in a magnetic field of 6.7 T. The line shapes ...

    Abstract We report proton spin noise spectra of a hyperpolarized solid sample of commonly used "DNP (dynamic nuclear polarization) juice" containing TEMPOL (4-hydroxy-2,2,6,6-tetramethylpiperidine N-oxide) and irradiated by a microwave field at a temperature of 1.2 K in a magnetic field of 6.7 T. The line shapes of the spin noise power spectra are sensitive to the variation of the microwave irradiation frequency and change from dip to bump, when the electron Larmor frequency is crossed, which is shown to be in good accordance with theory by simulations. Small but significant deviations from these predictions are observed, which can be related to spin noise and radiation damping phenomena that have been reported in thermally polarized systems. The non-linear dependence of the spin noise integral on nuclear polarization provides a means to monitor hyperpolarization semi-quantitatively without any perturbation of the spin system by radio frequency irradiation.
    Language English
    Publishing date 2015-11-13
    Publishing country Germany
    Document type Journal Article
    ISSN 1439-7641
    ISSN (online) 1439-7641
    DOI 10.1002/cphc.201500805
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  8. Article: Inclusive K(S);(0)K(S);(0) resonance production in ep collisions at HERA.

    Chekanov, S / Derrick, M / Magill, S / Musgrave, B / Nicholass, D / Repond, J / Yoshida, R / Mattingly, M C K / Antonioli, P / Bari, G / Bellagamba, L / Boscherini, D / Bruni, A / Bruni, G / Cindolo, F / Corradi, M / Iacobucci, G / Margotti, A / Nania, R /
    Polini, A / Antonelli, S / Basile, M / Bindi, M / Cifarelli, L / Contin, A / De Pasquale, S / Sartorelli, G / Zichichi, A / Bartsch, D / Brock, I / Hartmann, H / Hilger, E / Jakob, H-P / Jüngst, M / Nuncio-Quiroz, A E / Paul, E / Samson, U / Schönberg, V / Shehzadi, R / Wlasenko, M / Brook, N H / Heath, G P / Morris, J D / Capua, M / Fazio, S / Mastroberardino, A / Schioppa, M / Susinno, G / Tassi, E / Kim, J Y / Ibrahim, Z A / Kamaluddin, B / Wan Abdullah, W A T / Ning, Y / Ren, Z / Sciulli, F / Chwastowski, J / Eskreys, A / Figiel, J / Galas, A / Gil, M / Olkiewicz, K / Stopa, P / Zawiejski, L / Adamczyk, L / Bołd, T / Grabowska-Bołd, I / Kisielewska, D / Lukasik, J / Przybycień, M / Suszycki, L / Kotański, A / Słomiński, W / Behrens, U / Blohm, C / Bonato, A / Borras, K / Ciesielski, R / Coppola, N / Fang, S / Fourletova, J / Geiser, A / Göttlicher, P / Grebenyuk, J / Gregor, I / Haas, T / Hain, W / Hüttmann, A / Januschek, F / Kahle, B / Katkov, I I / Klein, U / Kötz, U / Kowalski, H / Lobodzinska, E / Löhr, B / Mankel, R / Melzer-Pellmann, I-A / Miglioranzi, S / Montanari, A / Namsoo, T / Notz, D / Parenti, A / Rinaldi, L / Roloff, P / Rubinsky, I / Santamarta, R / Schneekloth, U / Spiridonov, A / Szuba, D / Szuba, J / Theedt, T / Wolf, G / Wrona, K / Yagües Molina, A G / Youngman, C / Zeuner, W / Drugakov, V / Lohmann, W / Schlenstedt, S / Barbagli, G / Gallo, E / Pelfer, P G / Bamberger, A / Dobur, D / Karstens, F / Vlasov, N N / Bussey, P J / Doyle, A T / Dunne, W / Forrest, M / Rosin, M / Saxon, D H / Skillicorn, I O / Gialas, I / Papageorgiu, K / Holm, U / Klanner, R / Lohrmann, E / Schleper, P / Schörner-Sadenius, T / Sztuk, J / Stadie, H / Turcato, M / Foudas, C / Fry, C / Long, K R / Tapper, A D / Matsumoto, T / Nagano, K / Tokushuku, K / Yamada, S / Yamazaki, Y / Barakbaev, A N / Boos, E G / Pokrovskiy, N S / Zhautykov, B O / Aushev, V / Borodin, M / Kadenko, I / Kozulia, A / Libov, V / Lisovyi, M / Lontkovskyi, D / Makarenko, I / Sorokin, Iu / Verbytskyi, A / Volynets, O / Son, D / de Favereau, J / Piotrzkowski, K / Barreiro, F / Glasman, C / Jimenez, M / Labarga, L / Del Peso, J / Ron, E / Soares, M / Terrón, J / Zambrana, M / Corriveau, F / Liu, C / Schwartz, J / Walsh, R / Zhou, C / Tsurugai, T / Antonov, A / Dolgoshein, B A / Gladkov, D / Sosnovtsev, V / Stifutkin, A / Suchkov, S / Dementiev, R K / Ermolov, P F / Gladilin, L K / Golubkov, Yu A / Khein, L A / Korzhavina, I A / Kuzmin, V A / Levchenko, B B / Lukina, O Yu / Proskuryakov, A S / Shcheglova, L M / Zotkin, D S / Abt, I / Caldwell, A / Kollar, D / Reisert, B / Schmidke, W B / Grigorescu, G / Keramidas, A / Koffeman, E / Kooijman, P / Pellegrino, A / Tiecke, H / Vázquez, M / Wiggers, L / Brümmer, N / Bylsma, B / Durkin, L S / Lee, A / Ling, T Y / Allfrey, P D / Bell, M A / Cooper-Sarkar, A M / Devenish, R C E / Ferrando, J / Foster, B / Korcsak-Gorzo, K / Oliver, K / Robertson, A / Uribe-Estrada, C / Walczak, R / Bertolin, A / Dal Corso, F / Dusini, S / Longhin, A / Stanco, L / Bellan, P / Brugnera, R / Carlin, R / Garfagnini, A / Limentani, S / Oh, B Y / Raval, A / Ukleja, J / Whitmore, J J / Iga, Y / D'Agostini, G / Marini, G / Nigro, A / Cole, J E / Hart, J C / Abramowicz, H / Ingbir, R / Kananov, S / Levy, A / Stern, A / Kuze, M / Maeda, J / Hori, R / Kagawa, S / Okazaki, N / Shimizu, S / Tawara, T / Hamatsu, R / Kaji, H / Kitamura, S / Ota, O / Ri, Y D / Costa, M / Ferrero, M I / Monaco, V / Sacchi, R / Solano, A / Arneodo, M / Ruspa, M / Fourletov, S / Martin, J F / Stewart, T P / Boutle, S K / Butterworth, J M / Gwenlan, C / Jones, T W / Loizides, J H / Wing, M / Brzozowska, B / Ciborowski, J / Grzelak, G / Kulinski, P / Luzniak, P / Malka, J / Nowak, R J / Pawlak, J M / Tymieniecka, T / Ukleja, A / Zarnecki, A F / Adamus, M / Plucinski, P / Eisenberg, Y / Hochman, D / Karshon, U / Brownson, E / Danielson, T / Everett, A / Kçira, D / Reeder, D D / Ryan, P / Savin, A A / Smith, W H / Wolfe, H / Bhadra, S / Catterall, C D / Cui, Y / Hartner, G / Menary, S / Noor, U / Standage, J / Whyte, J

    Physical review letters

    2008  Volume 101, Issue 11, Page(s) 112003

    Abstract: Inclusive K_{S};{0}K_{S};{0} production in ep collisions at the DESY ep collider HERA was studied ... significance of 5 standard deviations. However, if this state is the same as that seen in gammagamma-->K_{S};{0 ... K_{S};{0}, it is unlikely to be a pure glueball state. ...

    Abstract Inclusive K_{S};{0}K_{S};{0} production in ep collisions at the DESY ep collider HERA was studied with the ZEUS detector using an integrated luminosity of 0.5 fb;{-1}. Enhancements in the mass spectrum were observed and are attributed to the production of f_{2}(1270)/a_{2};{0}(1320), f_{2};{'}(1525) and f_{0}(1710). Masses and widths were obtained using a fit which takes into account theoretical predictions based on SU(3) symmetry arguments, and are consistent with the Particle Data Group values. The f_{0}(1710) state, which has a mass consistent with a glueball candidate, was observed with a statistical significance of 5 standard deviations. However, if this state is the same as that seen in gammagamma-->K_{S};{0}K_{S};{0}, it is unlikely to be a pure glueball state.
    Language English
    Publishing date 2008-09-12
    Publishing country United States
    Document type Journal Article
    ZDB-ID 208853-8
    ISSN 1079-7114 ; 0031-9007
    ISSN (online) 1079-7114
    ISSN 0031-9007
    DOI 10.1103/PhysRevLett.101.112003
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  9. Article ; Online: Ultrafast isomerization in acetylene dication after carbon K-shell ionization

    Zheng Li / Ludger Inhester / Chelsea Liekhus-Schmaltz / Basile F. E. Curchod / James W. Snyder / Nikita Medvedev / James Cryan / Timur Osipov / Stefan Pabst / Oriol Vendrell / Phil Bucksbaum / Todd J. Martinez

    Nature Communications, Vol 8, Iss 1, Pp 1-

    2017  Volume 7

    Abstract: The timescale of isomerization in molecules involving ultrafast migration of constituent atoms is difficult to measure. Here the authors report that sub-100 fs isomerization time on acetylene dication in lower electronic states is not possible and point ... ...

    Abstract The timescale of isomerization in molecules involving ultrafast migration of constituent atoms is difficult to measure. Here the authors report that sub-100 fs isomerization time on acetylene dication in lower electronic states is not possible and point to misinterpretation of recent experimental results.
    Keywords Science ; Q
    Language English
    Publishing date 2017-09-01T00:00:00Z
    Publisher Nature Publishing Group
    Document type Article ; Online
    Database BASE - Bielefeld Academic Search Engine (life sciences selection)

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  10. Article ; Online: Ultrafast isomerization in acetylene dication after carbon K-shell ionization

    Zheng Li / Ludger Inhester / Chelsea Liekhus-Schmaltz / Basile F. E. Curchod / James W. Snyder / Nikita Medvedev / James Cryan / Timur Osipov / Stefan Pabst / Oriol Vendrell / Phil Bucksbaum / Todd J. Martinez

    Nature Communications, Vol 8, Iss 1, Pp 1-

    2017  Volume 7

    Abstract: The timescale of isomerization in molecules involving ultrafast migration of constituent atoms is difficult to measure. Here the authors report that sub-100 fs isomerization time on acetylene dication in lower electronic states is not possible and point ... ...

    Abstract The timescale of isomerization in molecules involving ultrafast migration of constituent atoms is difficult to measure. Here the authors report that sub-100 fs isomerization time on acetylene dication in lower electronic states is not possible and point to misinterpretation of recent experimental results.
    Keywords Science ; Q
    Language English
    Publishing date 2017-09-01T00:00:00Z
    Publisher Nature Portfolio
    Document type Article ; Online
    Database BASE - Bielefeld Academic Search Engine (life sciences selection)

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