1
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Rosenberg E, Andersen TI, Samajdar R, Petukhov A, Hoke JC, Abanin D, Bengtsson A, Drozdov IK, Erickson C, Klimov PV, Mi X, Morvan A, Neeley M, Neill C, Acharya R, Allen R, Anderson K, Ansmann M, Arute F, Arya K, Asfaw A, Atalaya J, Bardin JC, Bilmes A, Bortoli G, Bourassa A, Bovaird J, Brill L, Broughton M, Buckley BB, Buell DA, Burger T, Burkett B, Bushnell N, Campero J, Chang HS, Chen Z, Chiaro B, Chik D, Cogan J, Collins R, Conner P, Courtney W, Crook AL, Curtin B, Debroy DM, Barba ADT, Demura S, Di Paolo A, Dunsworth A, Earle C, Faoro L, Farhi E, Fatemi R, Ferreira VS, Burgos LF, Forati E, Fowler AG, Foxen B, Garcia G, Genois É, Giang W, Gidney C, Gilboa D, Giustina M, Gosula R, Dau AG, Gross JA, Habegger S, Hamilton MC, Hansen M, Harrigan MP, Harrington SD, Heu P, Hill G, Hoffmann MR, Hong S, Huang T, Huff A, Huggins WJ, Ioffe LB, Isakov SV, Iveland J, Jeffrey E, Jiang Z, Jones C, Juhas P, Kafri D, Khattar T, Khezri M, Kieferová M, Kim S, Kitaev A, Klots AR, Korotkov AN, Kostritsa F, Kreikebaum JM, Landhuis D, Laptev P, Lau KM, Laws L, Lee J, Lee KW, Lensky YD, Lester BJ, Lill AT, Liu W, Locharla A, Mandrà S, Martin O, Martin S, McClean JR, McEwen M, Meeks S, Miao KC, Mieszala A, Montazeri S, Movassagh R, Mruczkiewicz W, Nersisyan A, Newman M, Ng JH, Nguyen A, Nguyen M, Niu MY, O'Brien TE, Omonije S, Opremcak A, Potter R, Pryadko LP, Quintana C, Rhodes DM, Rocque C, Rubin NC, Saei N, Sank D, Sankaragomathi K, Satzinger KJ, Schurkus HF, Schuster C, Shearn MJ, Shorter A, Shutty N, Shvarts V, Sivak V, Skruzny J, Smith WC, Somma RD, Sterling G, Strain D, Szalay M, Thor D, Torres A, Vidal G, Villalonga B, Heidweiller CV, White T, Woo BWK, Xing C, Yao ZJ, Yeh P, Yoo J, Young G, Zalcman A, Zhang Y, Zhu N, Zobrist N, Neven H, Babbush R, Bacon D, Boixo S, Hilton J, Lucero E, Megrant A, Kelly J, Chen Y, Smelyanskiy V, Khemani V, Gopalakrishnan S, Prosen T, Roushan P. Dynamics of magnetization at infinite temperature in a Heisenberg spin chain. Science 2024; 384:48-53. [PMID: 38574139 DOI: 10.1126/science.adi7877] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2023] [Accepted: 03/01/2024] [Indexed: 04/06/2024]
Abstract
Understanding universal aspects of quantum dynamics is an unresolved problem in statistical mechanics. In particular, the spin dynamics of the one-dimensional Heisenberg model were conjectured as to belong to the Kardar-Parisi-Zhang (KPZ) universality class based on the scaling of the infinite-temperature spin-spin correlation function. In a chain of 46 superconducting qubits, we studied the probability distribution of the magnetization transferred across the chain's center, [Formula: see text]. The first two moments of [Formula: see text] show superdiffusive behavior, a hallmark of KPZ universality. However, the third and fourth moments ruled out the KPZ conjecture and allow for evaluating other theories. Our results highlight the importance of studying higher moments in determining dynamic universality classes and provide insights into universal behavior in quantum systems.
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Affiliation(s)
- E Rosenberg
- Google Research, Mountain View, CA, USA
- Department of Physics, Cornell University, Ithaca, NY, USA
| | | | - R Samajdar
- Department of Physics, Princeton University, Princeton, NJ, USA
- Princeton Center for Theoretical Science, Princeton University, Princeton, NJ, USA
| | | | - J C Hoke
- Department of Physics, Stanford University, Stanford, CA, USA
| | - D Abanin
- Google Research, Mountain View, CA, USA
| | | | - I K Drozdov
- Google Research, Mountain View, CA, USA
- Department of Physics, University of Connecticut, Storrs, CT, USA
| | | | | | - X Mi
- Google Research, Mountain View, CA, USA
| | - A Morvan
- Google Research, Mountain View, CA, USA
| | - M Neeley
- Google Research, Mountain View, CA, USA
| | - C Neill
- Google Research, Mountain View, CA, USA
| | - R Acharya
- Google Research, Mountain View, CA, USA
| | - R Allen
- Google Research, Mountain View, CA, USA
| | | | - M Ansmann
- Google Research, Mountain View, CA, USA
| | - F Arute
- Google Research, Mountain View, CA, USA
| | - K Arya
- Google Research, Mountain View, CA, USA
| | - A Asfaw
- Google Research, Mountain View, CA, USA
| | - J Atalaya
- Google Research, Mountain View, CA, USA
| | - J C Bardin
- Google Research, Mountain View, CA, USA
- Department of Electrical and Computer Engineering, University of Massachusetts, Amherst, MA, USA
| | - A Bilmes
- Google Research, Mountain View, CA, USA
| | - G Bortoli
- Google Research, Mountain View, CA, USA
| | | | - J Bovaird
- Google Research, Mountain View, CA, USA
| | - L Brill
- Google Research, Mountain View, CA, USA
| | | | | | - D A Buell
- Google Research, Mountain View, CA, USA
| | - T Burger
- Google Research, Mountain View, CA, USA
| | - B Burkett
- Google Research, Mountain View, CA, USA
| | | | - J Campero
- Google Research, Mountain View, CA, USA
| | - H-S Chang
- Google Research, Mountain View, CA, USA
| | - Z Chen
- Google Research, Mountain View, CA, USA
| | - B Chiaro
- Google Research, Mountain View, CA, USA
| | - D Chik
- Google Research, Mountain View, CA, USA
| | - J Cogan
- Google Research, Mountain View, CA, USA
| | - R Collins
- Google Research, Mountain View, CA, USA
| | - P Conner
- Google Research, Mountain View, CA, USA
| | | | - A L Crook
- Google Research, Mountain View, CA, USA
| | - B Curtin
- Google Research, Mountain View, CA, USA
| | | | | | - S Demura
- Google Research, Mountain View, CA, USA
| | | | | | - C Earle
- Google Research, Mountain View, CA, USA
| | - L Faoro
- Google Research, Mountain View, CA, USA
| | - E Farhi
- Google Research, Mountain View, CA, USA
| | - R Fatemi
- Google Research, Mountain View, CA, USA
| | | | | | - E Forati
- Google Research, Mountain View, CA, USA
| | | | - B Foxen
- Google Research, Mountain View, CA, USA
| | - G Garcia
- Google Research, Mountain View, CA, USA
| | - É Genois
- Google Research, Mountain View, CA, USA
| | - W Giang
- Google Research, Mountain View, CA, USA
| | - C Gidney
- Google Research, Mountain View, CA, USA
| | - D Gilboa
- Google Research, Mountain View, CA, USA
| | | | - R Gosula
- Google Research, Mountain View, CA, USA
| | | | - J A Gross
- Google Research, Mountain View, CA, USA
| | | | - M C Hamilton
- Google Research, Mountain View, CA, USA
- Department of Electrical and Computer Engineering, Auburn University, Auburn, AL, USA
| | - M Hansen
- Google Research, Mountain View, CA, USA
| | | | | | - P Heu
- Google Research, Mountain View, CA, USA
| | - G Hill
- Google Research, Mountain View, CA, USA
| | | | - S Hong
- Google Research, Mountain View, CA, USA
| | - T Huang
- Google Research, Mountain View, CA, USA
| | - A Huff
- Google Research, Mountain View, CA, USA
| | | | - L B Ioffe
- Google Research, Mountain View, CA, USA
| | | | - J Iveland
- Google Research, Mountain View, CA, USA
| | - E Jeffrey
- Google Research, Mountain View, CA, USA
| | - Z Jiang
- Google Research, Mountain View, CA, USA
| | - C Jones
- Google Research, Mountain View, CA, USA
| | - P Juhas
- Google Research, Mountain View, CA, USA
| | - D Kafri
- Google Research, Mountain View, CA, USA
| | - T Khattar
- Google Research, Mountain View, CA, USA
| | - M Khezri
- Google Research, Mountain View, CA, USA
| | - M Kieferová
- Google Research, Mountain View, CA, USA
- QSI, Faculty of Engineering & Information Technology, University of Technology Sydney, Ultimo, NSW, Australia
| | - S Kim
- Google Research, Mountain View, CA, USA
| | - A Kitaev
- Google Research, Mountain View, CA, USA
| | - A R Klots
- Google Research, Mountain View, CA, USA
| | - A N Korotkov
- Google Research, Mountain View, CA, USA
- Department of Electrical and Computer Engineering, University of California, Riverside, CA, USA
| | | | | | | | - P Laptev
- Google Research, Mountain View, CA, USA
| | - K-M Lau
- Google Research, Mountain View, CA, USA
| | - L Laws
- Google Research, Mountain View, CA, USA
| | - J Lee
- Google Research, Mountain View, CA, USA
- Department of Chemistry, Columbia University, New York, NY, USA
| | - K W Lee
- Google Research, Mountain View, CA, USA
| | | | | | - A T Lill
- Google Research, Mountain View, CA, USA
| | - W Liu
- Google Research, Mountain View, CA, USA
| | | | - S Mandrà
- Google Research, Mountain View, CA, USA
| | - O Martin
- Google Research, Mountain View, CA, USA
| | - S Martin
- Google Research, Mountain View, CA, USA
| | | | - M McEwen
- Google Research, Mountain View, CA, USA
| | - S Meeks
- Google Research, Mountain View, CA, USA
| | - K C Miao
- Google Research, Mountain View, CA, USA
| | | | | | | | | | | | - M Newman
- Google Research, Mountain View, CA, USA
| | - J H Ng
- Google Research, Mountain View, CA, USA
| | - A Nguyen
- Google Research, Mountain View, CA, USA
| | - M Nguyen
- Google Research, Mountain View, CA, USA
| | - M Y Niu
- Google Research, Mountain View, CA, USA
| | | | - S Omonije
- Google Research, Mountain View, CA, USA
| | | | - R Potter
- Google Research, Mountain View, CA, USA
| | - L P Pryadko
- Department of Physics and Astronomy, University of California, Riverside, CA, USA
| | | | | | - C Rocque
- Google Research, Mountain View, CA, USA
| | - N C Rubin
- Google Research, Mountain View, CA, USA
| | - N Saei
- Google Research, Mountain View, CA, USA
| | - D Sank
- Google Research, Mountain View, CA, USA
| | | | | | | | | | | | - A Shorter
- Google Research, Mountain View, CA, USA
| | - N Shutty
- Google Research, Mountain View, CA, USA
| | - V Shvarts
- Google Research, Mountain View, CA, USA
| | - V Sivak
- Google Research, Mountain View, CA, USA
| | - J Skruzny
- Google Research, Mountain View, CA, USA
| | | | - R D Somma
- Google Research, Mountain View, CA, USA
| | | | - D Strain
- Google Research, Mountain View, CA, USA
| | - M Szalay
- Google Research, Mountain View, CA, USA
| | - D Thor
- Google Research, Mountain View, CA, USA
| | - A Torres
- Google Research, Mountain View, CA, USA
| | - G Vidal
- Google Research, Mountain View, CA, USA
| | | | | | - T White
- Google Research, Mountain View, CA, USA
| | - B W K Woo
- Google Research, Mountain View, CA, USA
| | - C Xing
- Google Research, Mountain View, CA, USA
| | | | - P Yeh
- Google Research, Mountain View, CA, USA
| | - J Yoo
- Google Research, Mountain View, CA, USA
| | - G Young
- Google Research, Mountain View, CA, USA
| | - A Zalcman
- Google Research, Mountain View, CA, USA
| | - Y Zhang
- Google Research, Mountain View, CA, USA
| | - N Zhu
- Google Research, Mountain View, CA, USA
| | - N Zobrist
- Google Research, Mountain View, CA, USA
| | - H Neven
- Google Research, Mountain View, CA, USA
| | - R Babbush
- Google Research, Mountain View, CA, USA
| | - D Bacon
- Google Research, Mountain View, CA, USA
| | - S Boixo
- Google Research, Mountain View, CA, USA
| | - J Hilton
- Google Research, Mountain View, CA, USA
| | - E Lucero
- Google Research, Mountain View, CA, USA
| | - A Megrant
- Google Research, Mountain View, CA, USA
| | - J Kelly
- Google Research, Mountain View, CA, USA
| | - Y Chen
- Google Research, Mountain View, CA, USA
| | | | - V Khemani
- Department of Physics, Stanford University, Stanford, CA, USA
| | | | - T Prosen
- Faculty of Mathematics and Physics, University of Ljubljana, Ljubljana, Slovenia
| | - P Roushan
- Google Research, Mountain View, CA, USA
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2
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Mi X, Michailidis AA, Shabani S, Miao KC, Klimov PV, Lloyd J, Rosenberg E, Acharya R, Aleiner I, Andersen TI, Ansmann M, Arute F, Arya K, Asfaw A, Atalaya J, Bardin JC, Bengtsson A, Bortoli G, Bourassa A, Bovaird J, Brill L, Broughton M, Buckley BB, Buell DA, Burger T, Burkett B, Bushnell N, Chen Z, Chiaro B, Chik D, Chou C, Cogan J, Collins R, Conner P, Courtney W, Crook AL, Curtin B, Dau AG, Debroy DM, Del Toro Barba A, Demura S, Di Paolo A, Drozdov IK, Dunsworth A, Erickson C, Faoro L, Farhi E, Fatemi R, Ferreira VS, Burgos LF, Forati E, Fowler AG, Foxen B, Genois É, Giang W, Gidney C, Gilboa D, Giustina M, Gosula R, Gross JA, Habegger S, Hamilton MC, Hansen M, Harrigan MP, Harrington SD, Heu P, Hoffmann MR, Hong S, Huang T, Huff A, Huggins WJ, Ioffe LB, Isakov SV, Iveland J, Jeffrey E, Jiang Z, Jones C, Juhas P, Kafri D, Kechedzhi K, Khattar T, Khezri M, Kieferová M, Kim S, Kitaev A, Klots AR, Korotkov AN, Kostritsa F, Kreikebaum JM, Landhuis D, Laptev P, Lau KM, Laws L, Lee J, Lee KW, Lensky YD, Lester BJ, Lill AT, Liu W, Locharla A, Malone FD, Martin O, McClean JR, McEwen M, Mieszala A, Montazeri S, Morvan A, Movassagh R, Mruczkiewicz W, Neeley M, Neill C, Nersisyan A, Newman M, Ng JH, Nguyen A, Nguyen M, Niu MY, O'Brien TE, Opremcak A, Petukhov A, Potter R, Pryadko LP, Quintana C, Rocque C, Rubin NC, Saei N, Sank D, Sankaragomathi K, Satzinger KJ, Schurkus HF, Schuster C, Shearn MJ, Shorter A, Shutty N, Shvarts V, Skruzny J, Smith WC, Somma R, Sterling G, Strain D, Szalay M, Torres A, Vidal G, Villalonga B, Heidweiller CV, White T, Woo BWK, Xing C, Yao ZJ, Yeh P, Yoo J, Young G, Zalcman A, Zhang Y, Zhu N, Zobrist N, Neven H, Babbush R, Bacon D, Boixo S, Hilton J, Lucero E, Megrant A, Kelly J, Chen Y, Roushan P, Smelyanskiy V, Abanin DA. Stable quantum-correlated many-body states through engineered dissipation. Science 2024; 383:1332-1337. [PMID: 38513021 DOI: 10.1126/science.adh9932] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/27/2023] [Accepted: 02/13/2024] [Indexed: 03/23/2024]
Abstract
Engineered dissipative reservoirs have the potential to steer many-body quantum systems toward correlated steady states useful for quantum simulation of high-temperature superconductivity or quantum magnetism. Using up to 49 superconducting qubits, we prepared low-energy states of the transverse-field Ising model through coupling to dissipative auxiliary qubits. In one dimension, we observed long-range quantum correlations and a ground-state fidelity of 0.86 for 18 qubits at the critical point. In two dimensions, we found mutual information that extends beyond nearest neighbors. Lastly, by coupling the system to auxiliaries emulating reservoirs with different chemical potentials, we explored transport in the quantum Heisenberg model. Our results establish engineered dissipation as a scalable alternative to unitary evolution for preparing entangled many-body states on noisy quantum processors.
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Affiliation(s)
- X Mi
- Google Research, Mountain View, CA, USA
| | - A A Michailidis
- Department of Theoretical Physics, University of Geneva, Geneva, Switzerland
| | - S Shabani
- Google Research, Mountain View, CA, USA
| | - K C Miao
- Google Research, Mountain View, CA, USA
| | | | - J Lloyd
- Department of Theoretical Physics, University of Geneva, Geneva, Switzerland
| | | | - R Acharya
- Google Research, Mountain View, CA, USA
| | - I Aleiner
- Google Research, Mountain View, CA, USA
| | | | - M Ansmann
- Google Research, Mountain View, CA, USA
| | - F Arute
- Google Research, Mountain View, CA, USA
| | - K Arya
- Google Research, Mountain View, CA, USA
| | - A Asfaw
- Google Research, Mountain View, CA, USA
| | - J Atalaya
- Google Research, Mountain View, CA, USA
| | - J C Bardin
- Google Research, Mountain View, CA, USA
- Department of Electrical and Computer Engineering, University of Massachusetts, Amherst, MA, USA
| | | | - G Bortoli
- Google Research, Mountain View, CA, USA
| | | | - J Bovaird
- Google Research, Mountain View, CA, USA
| | - L Brill
- Google Research, Mountain View, CA, USA
| | | | | | - D A Buell
- Google Research, Mountain View, CA, USA
| | - T Burger
- Google Research, Mountain View, CA, USA
| | - B Burkett
- Google Research, Mountain View, CA, USA
| | | | - Z Chen
- Google Research, Mountain View, CA, USA
| | - B Chiaro
- Google Research, Mountain View, CA, USA
| | - D Chik
- Google Research, Mountain View, CA, USA
| | - C Chou
- Google Research, Mountain View, CA, USA
| | - J Cogan
- Google Research, Mountain View, CA, USA
| | - R Collins
- Google Research, Mountain View, CA, USA
| | - P Conner
- Google Research, Mountain View, CA, USA
| | | | - A L Crook
- Google Research, Mountain View, CA, USA
| | - B Curtin
- Google Research, Mountain View, CA, USA
| | - A G Dau
- Google Research, Mountain View, CA, USA
| | | | | | - S Demura
- Google Research, Mountain View, CA, USA
| | | | | | | | | | - L Faoro
- Google Research, Mountain View, CA, USA
| | - E Farhi
- Google Research, Mountain View, CA, USA
| | - R Fatemi
- Google Research, Mountain View, CA, USA
| | | | | | - E Forati
- Google Research, Mountain View, CA, USA
| | | | - B Foxen
- Google Research, Mountain View, CA, USA
| | - É Genois
- Google Research, Mountain View, CA, USA
| | - W Giang
- Google Research, Mountain View, CA, USA
| | - C Gidney
- Google Research, Mountain View, CA, USA
| | - D Gilboa
- Google Research, Mountain View, CA, USA
| | | | - R Gosula
- Google Research, Mountain View, CA, USA
| | - J A Gross
- Google Research, Mountain View, CA, USA
| | | | - M C Hamilton
- Google Research, Mountain View, CA, USA
- Department of Electrical and Computer Engineering, Auburn University, Auburn, AL, USA
| | - M Hansen
- Google Research, Mountain View, CA, USA
| | | | | | - P Heu
- Google Research, Mountain View, CA, USA
| | | | - S Hong
- Google Research, Mountain View, CA, USA
| | - T Huang
- Google Research, Mountain View, CA, USA
| | - A Huff
- Google Research, Mountain View, CA, USA
| | | | - L B Ioffe
- Google Research, Mountain View, CA, USA
| | | | - J Iveland
- Google Research, Mountain View, CA, USA
| | - E Jeffrey
- Google Research, Mountain View, CA, USA
| | - Z Jiang
- Google Research, Mountain View, CA, USA
| | - C Jones
- Google Research, Mountain View, CA, USA
| | - P Juhas
- Google Research, Mountain View, CA, USA
| | - D Kafri
- Google Research, Mountain View, CA, USA
| | | | - T Khattar
- Google Research, Mountain View, CA, USA
| | - M Khezri
- Google Research, Mountain View, CA, USA
| | - M Kieferová
- Google Research, Mountain View, CA, USA
- Centre for Quantum Software and Information (QSI), Faculty of Engineering and Information Technology, University of Technology Sydney, Sydney, NSW, Australia
| | - S Kim
- Google Research, Mountain View, CA, USA
| | - A Kitaev
- Google Research, Mountain View, CA, USA
| | - A R Klots
- Google Research, Mountain View, CA, USA
| | - A N Korotkov
- Google Research, Mountain View, CA, USA
- Department of Electrical and Computer Engineering, University of California, Riverside, CA, USA
| | | | | | | | - P Laptev
- Google Research, Mountain View, CA, USA
| | - K-M Lau
- Google Research, Mountain View, CA, USA
| | - L Laws
- Google Research, Mountain View, CA, USA
| | - J Lee
- Google Research, Mountain View, CA, USA
- Department of Chemistry, Columbia University, New York, NY, USA
| | - K W Lee
- Google Research, Mountain View, CA, USA
| | | | | | - A T Lill
- Google Research, Mountain View, CA, USA
| | - W Liu
- Google Research, Mountain View, CA, USA
| | | | | | - O Martin
- Google Research, Mountain View, CA, USA
| | | | - M McEwen
- Google Research, Mountain View, CA, USA
| | | | | | - A Morvan
- Google Research, Mountain View, CA, USA
| | | | | | - M Neeley
- Google Research, Mountain View, CA, USA
| | - C Neill
- Google Research, Mountain View, CA, USA
| | | | - M Newman
- Google Research, Mountain View, CA, USA
| | - J H Ng
- Google Research, Mountain View, CA, USA
| | - A Nguyen
- Google Research, Mountain View, CA, USA
| | - M Nguyen
- Google Research, Mountain View, CA, USA
| | - M Y Niu
- Google Research, Mountain View, CA, USA
| | | | | | | | - R Potter
- Google Research, Mountain View, CA, USA
| | - L P Pryadko
- Google Research, Mountain View, CA, USA
- Department of Physics and Astronomy, University of California, Riverside, CA, USA
| | | | - C Rocque
- Google Research, Mountain View, CA, USA
| | - N C Rubin
- Google Research, Mountain View, CA, USA
| | - N Saei
- Google Research, Mountain View, CA, USA
| | - D Sank
- Google Research, Mountain View, CA, USA
| | | | | | | | | | | | - A Shorter
- Google Research, Mountain View, CA, USA
| | - N Shutty
- Google Research, Mountain View, CA, USA
| | - V Shvarts
- Google Research, Mountain View, CA, USA
| | - J Skruzny
- Google Research, Mountain View, CA, USA
| | - W C Smith
- Google Research, Mountain View, CA, USA
| | - R Somma
- Google Research, Mountain View, CA, USA
| | | | - D Strain
- Google Research, Mountain View, CA, USA
| | - M Szalay
- Google Research, Mountain View, CA, USA
| | - A Torres
- Google Research, Mountain View, CA, USA
| | - G Vidal
- Google Research, Mountain View, CA, USA
| | | | | | - T White
- Google Research, Mountain View, CA, USA
| | - B W K Woo
- Google Research, Mountain View, CA, USA
| | - C Xing
- Google Research, Mountain View, CA, USA
| | - Z J Yao
- Google Research, Mountain View, CA, USA
| | - P Yeh
- Google Research, Mountain View, CA, USA
| | - J Yoo
- Google Research, Mountain View, CA, USA
| | - G Young
- Google Research, Mountain View, CA, USA
| | - A Zalcman
- Google Research, Mountain View, CA, USA
| | - Y Zhang
- Google Research, Mountain View, CA, USA
| | - N Zhu
- Google Research, Mountain View, CA, USA
| | - N Zobrist
- Google Research, Mountain View, CA, USA
| | - H Neven
- Google Research, Mountain View, CA, USA
| | - R Babbush
- Google Research, Mountain View, CA, USA
| | - D Bacon
- Google Research, Mountain View, CA, USA
| | - S Boixo
- Google Research, Mountain View, CA, USA
| | - J Hilton
- Google Research, Mountain View, CA, USA
| | - E Lucero
- Google Research, Mountain View, CA, USA
| | - A Megrant
- Google Research, Mountain View, CA, USA
| | - J Kelly
- Google Research, Mountain View, CA, USA
| | - Y Chen
- Google Research, Mountain View, CA, USA
| | - P Roushan
- Google Research, Mountain View, CA, USA
| | | | - D A Abanin
- Google Research, Mountain View, CA, USA
- Department of Theoretical Physics, University of Geneva, Geneva, Switzerland
- Department of Physics, Princeton University, Princeton, NJ, USA
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3
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Pinter A, Costanzo A, Khattri S, Smith SD, Carrascosa JM, Tada Y, Riedl E, Reich A, Brnabic A, Haustrup N, Lampropoulou A, Lipkovich I, Kadziola Z, Paul C, Schuster C. Comparative Effectiveness and Durability of Biologics in Clinical Practice: Month 12 Outcomes from the International, Observational Psoriasis Study of Health Outcomes (PSoHO). Dermatol Ther (Heidelb) 2023:10.1007/s13555-023-01086-9. [PMID: 38113010 DOI: 10.1007/s13555-023-01086-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2023] [Accepted: 12/08/2023] [Indexed: 12/21/2023] Open
Abstract
INTRODUCTION Given the chronic nature of psoriasis (PsO), more studies are needed that directly compare the effectiveness of different biologics over long observation periods. This study compares the effectiveness and durability through 12 months of anti-interleukin (IL)-17A biologics relative to other approved biologics in patients with moderate-to-severe psoriasis in a real-world setting. METHODS The Psoriasis Study of Health Outcomes (PSoHO) is an ongoing 3-year, prospective, non-interventional cohort study of 1981 adults with chronic moderate-to-severe plaque psoriasis initiating or switching to a new biologic. The study compares the effectiveness of anti-IL-17A biologics with other approved biologics and provides pairwise comparisons of seven individual biologics versus ixekizumab. The primary outcome was defined as the proportion of patients who had at least a 90% improvement in Psoriasis Area and Severity Index score (PASI90) and/or a score of 0 or 1 in static Physician Global Assessment (sPGA). Secondary objective comparisons included the proportion of patients who achieved PASI90, PASI100, a Dermatology Life Quality Index (DLQI) score of 0 or 1, and three different actions of durability of treatment response. Unadjusted response rates are presented alongside the primary analysis, which uses frequentist model averaging (FMA) to evaluate the adjusted comparative effectiveness. RESULTS Compared to the other biologics cohort, the anti-IL-17A cohort had a higher response rate (68.0% vs. 65.1%) and significantly higher odds of achieving the primary outcome at month 12. The two cohorts had similar response rates for PASI100 (40.5% and 37.1%) and PASI90 (53.9% and 51.7%) at month 12, with no significant differences between the cohorts in the adjusted analyses. At month 12, the response rates across the individual biologics were 53.5-72.6% for the primary outcome, 27.6-48.3% for PASI100, and 41.7-61.4% for PASI90. CONCLUSIONS These results show the comparative effectiveness of biologics at 6 and 12 months in the real-world setting. TRIAL REGISTRATION ClinicalTrials.gov identifier EUPAS24207.
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Affiliation(s)
- A Pinter
- University Hospital Frankfurt, Frankfurt am Main, Germany.
| | - A Costanzo
- Division of Dermatology, Humanitas Research Hospital, Pieve Emanuele, Milan, Italy
- Dermatology IRCCS Humanitas Research Hospital, Rozzano, Milan, Italy
| | - S Khattri
- Icahn School of Medicine at Mount Sinai, New York, NY, USA
| | - S D Smith
- ANU Medical School, ANU College of Health and Medicine, The Australian National University, Canberra, Australia
| | - J M Carrascosa
- Department of Dermatology, Hospital Universitari Germans Trias i Pujol, Universitat Autònoma of Barcelona, IGTP, Carretera de Canyet, S/N, 08916, Badalona, Barcelona, Spain
| | - Y Tada
- Department of Dermatology, Teikyo University School of Medicine, Tokyo, Japan
| | - E Riedl
- Department of Dermatology, Medical University of Vienna, Vienna, Austria
| | - A Reich
- Department of Dermatology, Institute of Medical Sciences, Medical College of Rzeszow University, Rzeszow, Poland
| | - A Brnabic
- Eli Lilly and Company, Indianapolis, USA
| | - N Haustrup
- Eli Lilly and Company, Indianapolis, USA
| | | | | | - Z Kadziola
- Eli Lilly and Company, Indianapolis, USA
| | - C Paul
- Université Paul Sabatier Toulouse III, Toulouse, France
| | - C Schuster
- Department of Dermatology, Medical University of Vienna, Vienna, Austria
- Eli Lilly and Company, Indianapolis, USA
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4
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Hoke JC, Ippoliti M, Rosenberg E, Abanin D, Acharya R, Andersen TI, Ansmann M, Arute F, Arya K, Asfaw A, Atalaya J, Bardin JC, Bengtsson A, Bortoli G, Bourassa A, Bovaird J, Brill L, Broughton M, Buckley BB, Buell DA, Burger T, Burkett B, Bushnell N, Chen Z, Chiaro B, Chik D, Cogan J, Collins R, Conner P, Courtney W, Crook AL, Curtin B, Dau AG, Debroy DM, Del Toro Barba A, Demura S, Di Paolo A, Drozdov IK, Dunsworth A, Eppens D, Erickson C, Farhi E, Fatemi R, Ferreira VS, Burgos LF, Forati E, Fowler AG, Foxen B, Giang W, Gidney C, Gilboa D, Giustina M, Gosula R, Gross JA, Habegger S, Hamilton MC, Hansen M, Harrigan MP, Harrington SD, Heu P, Hoffmann MR, Hong S, Huang T, Huff A, Huggins WJ, Isakov SV, Iveland J, Jeffrey E, Jiang Z, Jones C, Juhas P, Kafri D, Kechedzhi K, Khattar T, Khezri M, Kieferová M, Kim S, Kitaev A, Klimov PV, Klots AR, Korotkov AN, Kostritsa F, Kreikebaum JM, Landhuis D, Laptev P, Lau KM, Laws L, Lee J, Lee KW, Lensky YD, Lester BJ, Lill AT, Liu W, Locharla A, Martin O, McClean JR, McEwen M, Miao KC, Mieszala A, Montazeri S, Morvan A, Movassagh R, Mruczkiewicz W, Neeley M, Neill C, Nersisyan A, Newman M, Ng JH, Nguyen A, Nguyen M, Niu MY, O’Brien TE, Omonije S, Opremcak A, Petukhov A, Potter R, Pryadko LP, Quintana C, Rocque C, Rubin NC, Saei N, Sank D, Sankaragomathi K, Satzinger KJ, Schurkus HF, Schuster C, Shearn MJ, Shorter A, Shutty N, Shvarts V, Skruzny J, Smith WC, Somma R, Sterling G, Strain D, Szalay M, Torres A, Vidal G, Villalonga B, Heidweiller CV, White T, Woo BWK, Xing C, Yao ZJ, Yeh P, Yoo J, Young G, Zalcman A, Zhang Y, Zhu N, Zobrist N, Neven H, Babbush R, Bacon D, Boixo S, Hilton J, Lucero E, Megrant A, Kelly J, Chen Y, Smelyanskiy V, Mi X, Khemani V, Roushan P. Measurement-induced entanglement and teleportation on a noisy quantum processor. Nature 2023; 622:481-486. [PMID: 37853150 PMCID: PMC10584681 DOI: 10.1038/s41586-023-06505-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/08/2023] [Accepted: 08/01/2023] [Indexed: 10/20/2023]
Abstract
Measurement has a special role in quantum theory1: by collapsing the wavefunction, it can enable phenomena such as teleportation2 and thereby alter the 'arrow of time' that constrains unitary evolution. When integrated in many-body dynamics, measurements can lead to emergent patterns of quantum information in space-time3-10 that go beyond the established paradigms for characterizing phases, either in or out of equilibrium11-13. For present-day noisy intermediate-scale quantum (NISQ) processors14, the experimental realization of such physics can be problematic because of hardware limitations and the stochastic nature of quantum measurement. Here we address these experimental challenges and study measurement-induced quantum information phases on up to 70 superconducting qubits. By leveraging the interchangeability of space and time, we use a duality mapping9,15-17 to avoid mid-circuit measurement and access different manifestations of the underlying phases, from entanglement scaling3,4 to measurement-induced teleportation18. We obtain finite-sized signatures of a phase transition with a decoding protocol that correlates the experimental measurement with classical simulation data. The phases display remarkably different sensitivity to noise, and we use this disparity to turn an inherent hardware limitation into a useful diagnostic. Our work demonstrates an approach to realizing measurement-induced physics at scales that are at the limits of current NISQ processors.
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5
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Reich A, Pinter A, Maul JT, Vender RB, Torres T, Brnabic A, Haustrup N, Reed C, Schuster C, Riedl E. Speed of clinical improvement in the real-world setting from patient-reported Psoriasis Symptoms and Signs Diary: Secondary outcomes from the Psoriasis Study of Health Outcomes through 12 weeks. J Eur Acad Dermatol Venereol 2023; 37:1825-1840. [PMID: 37147855 DOI: 10.1111/jdv.19161] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2022] [Accepted: 04/24/2023] [Indexed: 05/07/2023]
Abstract
BACKGROUND Rapid skin improvement is a key treatment goal of patients with moderate-to-severe psoriasis (PsO). OBJECTIVES To compare the speed of clinical improvement of approved biologics on the symptoms and signs of psoriasis assessed by patients using the validated Psoriasis Symptoms and Signs Diary (PSSD) through 12 weeks. METHODS Psoriasis Study of Health Outcomes (PSoHO) is an international, prospective, non-interventional study that compares the effectiveness of anti-interleukin (IL)-17A biologics versus other biologics, together with pairwise comparisons of ixekizumab versus five individual biologics in patients with PsO. Using the PSSD 7-day recall period, patients assessed the symptoms (itch, skin tightness, burning, stinging and pain) and signs (dryness, cracking, scaling, shedding/flaking, redness and bleeding) of their psoriasis (0-10). Symptom and sign summary scores (0-100) are derived from the average of individual scores. Percentage change in summary scores and proportion of patients with clinically meaningful improvements (CMI) in PSSD summary and individual scores are evaluated weekly. Longitudinal PSSD data are reported as observed with treatment comparisons analysed using mixed model for repeated measures (MMRM) and generalized linear mixed models (GLMM). RESULTS Across cohorts and treatments, eligible patients (n = 1654) had comparable baseline PSSD scores. From Week 1, the anti-IL-17A cohort achieved significantly larger score improvements in PSSD summary scores and a higher proportion of patients showed CMIs compared to the other biologics cohort through 12 weeks. Lower PSSD scores were associated with a greater proportion of patients reporting their psoriasis as no longer impacting their quality-of-life (DLQI 0,1) and a high level of clinical response (PASI100). Results also indicate a relationship between an early CMI in PSSD score at Week 2 and PASI100 score at Week 12. CONCLUSIONS Treatment with anti-IL-17A biologics, particularly ixekizumab, resulted in rapid and sustained patient-reported improvements in psoriasis symptoms and signs compared with other biologics in a real-world setting.
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Affiliation(s)
- A Reich
- Department of Dermatology, Institute of Medical Sciences, Medical College of Rzeszow University, Rzeszow, Poland
| | - A Pinter
- Department of Dermatology, Venereology and Allergology, University Hospital Frankfurt, Frankfurt am Main, Germany
| | - J-T Maul
- Department of Dermatology and Venereology, University Hospital of Zürich and Faculty of Medicine, University of Zürich, Zürich, Switzerland
| | - R B Vender
- Dermatrials Research Inc. and Venderm Consulting, Hamilton, Ontario, Canada
| | - T Torres
- Department of Dermatology and Dermatology Research Unit, Centro Hospitalar Universitário do Porto, University of Porto, Porto, Portugal
| | - A Brnabic
- Eli Lilly and Company, Indiana, Indianapolis, USA
| | - N Haustrup
- Eli Lilly and Company, Indiana, Indianapolis, USA
| | - C Reed
- Eli Lilly and Company, Indiana, Indianapolis, USA
| | - C Schuster
- Eli Lilly and Company, Indiana, Indianapolis, USA
- Department of Dermatology, Medical University of Vienna, Vienna, Austria
| | - E Riedl
- Department of Dermatology, Medical University of Vienna, Vienna, Austria
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6
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Andersen TI, Lensky YD, Kechedzhi K, Drozdov IK, Bengtsson A, Hong S, Morvan A, Mi X, Opremcak A, Acharya R, Allen R, Ansmann M, Arute F, Arya K, Asfaw A, Atalaya J, Babbush R, Bacon D, Bardin JC, Bortoli G, Bourassa A, Bovaird J, Brill L, Broughton M, Buckley BB, Buell DA, Burger T, Burkett B, Bushnell N, Chen Z, Chiaro B, Chik D, Chou C, Cogan J, Collins R, Conner P, Courtney W, Crook AL, Curtin B, Debroy DM, Del Toro Barba A, Demura S, Dunsworth A, Eppens D, Erickson C, Faoro L, Farhi E, Fatemi R, Ferreira VS, Burgos LF, Forati E, Fowler AG, Foxen B, Giang W, Gidney C, Gilboa D, Giustina M, Gosula R, Dau AG, Gross JA, Habegger S, Hamilton MC, Hansen M, Harrigan MP, Harrington SD, Heu P, Hilton J, Hoffmann MR, Huang T, Huff A, Huggins WJ, Ioffe LB, Isakov SV, Iveland J, Jeffrey E, Jiang Z, Jones C, Juhas P, Kafri D, Khattar T, Khezri M, Kieferová M, Kim S, Kitaev A, Klimov PV, Klots AR, Korotkov AN, Kostritsa F, Kreikebaum JM, Landhuis D, Laptev P, Lau KM, Laws L, Lee J, Lee KW, Lester BJ, Lill AT, Liu W, Locharla A, Lucero E, Malone FD, Martin O, McClean JR, McCourt T, McEwen M, Miao KC, Mieszala A, Mohseni M, Montazeri S, Mount E, Movassagh R, Mruczkiewicz W, Naaman O, Neeley M, Neill C, Nersisyan A, Newman M, Ng JH, Nguyen A, Nguyen M, Niu MY, O’Brien TE, Omonije S, Petukhov A, Potter R, Pryadko LP, Quintana C, Rocque C, Rubin NC, Saei N, Sank D, Sankaragomathi K, Satzinger KJ, Schurkus HF, Schuster C, Shearn MJ, Shorter A, Shutty N, Shvarts V, Skruzny J, Smith WC, Somma R, Sterling G, Strain D, Szalay M, Torres A, Vidal G, Villalonga B, Heidweiller CV, White T, Woo BWK, Xing C, Yao ZJ, Yeh P, Yoo J, Young G, Zalcman A, Zhang Y, Zhu N, Zobrist N, Neven H, Boixo S, Megrant A, Kelly J, Chen Y, Smelyanskiy V, Kim EA, Aleiner I, Roushan P. Non-Abelian braiding of graph vertices in a superconducting processor. Nature 2023; 618:264-269. [PMID: 37169834 DOI: 10.1038/s41586-023-05954-4] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/03/2022] [Accepted: 03/14/2023] [Indexed: 06/09/2023]
Abstract
Indistinguishability of particles is a fundamental principle of quantum mechanics1. For all elementary and quasiparticles observed to date-including fermions, bosons and Abelian anyons-this principle guarantees that the braiding of identical particles leaves the system unchanged2,3. However, in two spatial dimensions, an intriguing possibility exists: braiding of non-Abelian anyons causes rotations in a space of topologically degenerate wavefunctions4-8. Hence, it can change the observables of the system without violating the principle of indistinguishability. Despite the well-developed mathematical description of non-Abelian anyons and numerous theoretical proposals9-22, the experimental observation of their exchange statistics has remained elusive for decades. Controllable many-body quantum states generated on quantum processors offer another path for exploring these fundamental phenomena. Whereas efforts on conventional solid-state platforms typically involve Hamiltonian dynamics of quasiparticles, superconducting quantum processors allow for directly manipulating the many-body wavefunction by means of unitary gates. Building on predictions that stabilizer codes can host projective non-Abelian Ising anyons9,10, we implement a generalized stabilizer code and unitary protocol23 to create and braid them. This allows us to experimentally verify the fusion rules of the anyons and braid them to realize their statistics. We then study the prospect of using the anyons for quantum computation and use braiding to create an entangled state of anyons encoding three logical qubits. Our work provides new insights about non-Abelian braiding and, through the future inclusion of error correction to achieve topological protection, could open a path towards fault-tolerant quantum computing.
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7
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Morvan A, Andersen TI, Mi X, Neill C, Petukhov A, Kechedzhi K, Abanin DA, Michailidis A, Acharya R, Arute F, Arya K, Asfaw A, Atalaya J, Bardin JC, Basso J, Bengtsson A, Bortoli G, Bourassa A, Bovaird J, Brill L, Broughton M, Buckley BB, Buell DA, Burger T, Burkett B, Bushnell N, Chen Z, Chiaro B, Collins R, Conner P, Courtney W, Crook AL, Curtin B, Debroy DM, Del Toro Barba A, Demura S, Dunsworth A, Eppens D, Erickson C, Faoro L, Farhi E, Fatemi R, Flores Burgos L, Forati E, Fowler AG, Foxen B, Giang W, Gidney C, Gilboa D, Giustina M, Grajales Dau A, Gross JA, Habegger S, Hamilton MC, Harrigan MP, Harrington SD, Hoffmann M, Hong S, Huang T, Huff A, Huggins WJ, Isakov SV, Iveland J, Jeffrey E, Jiang Z, Jones C, Juhas P, Kafri D, Khattar T, Khezri M, Kieferová M, Kim S, Kitaev AY, Klimov PV, Klots AR, Korotkov AN, Kostritsa F, Kreikebaum JM, Landhuis D, Laptev P, Lau KM, Laws L, Lee J, Lee KW, Lester BJ, Lill AT, Liu W, Locharla A, Malone F, Martin O, McClean JR, McEwen M, Meurer Costa B, Miao KC, Mohseni M, Montazeri S, Mount E, Mruczkiewicz W, Naaman O, Neeley M, Nersisyan A, Newman M, Nguyen A, Nguyen M, Niu MY, O'Brien TE, Olenewa R, Opremcak A, Potter R, Quintana C, Rubin NC, Saei N, Sank D, Sankaragomathi K, Satzinger KJ, Schurkus HF, Schuster C, Shearn MJ, Shorter A, Shvarts V, Skruzny J, Smith WC, Strain D, Sterling G, Su Y, Szalay M, Torres A, Vidal G, Villalonga B, Vollgraff-Heidweiller C, White T, Xing C, Yao Z, Yeh P, Yoo J, Zalcman A, Zhang Y, Zhu N, Neven H, Bacon D, Hilton J, Lucero E, Babbush R, Boixo S, Megrant A, Kelly J, Chen Y, Smelyanskiy V, Aleiner I, Ioffe LB, Roushan P. Formation of robust bound states of interacting microwave photons. Nature 2022; 612:240-245. [PMID: 36477133 PMCID: PMC9729104 DOI: 10.1038/s41586-022-05348-y] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/03/2022] [Accepted: 09/14/2022] [Indexed: 12/12/2022]
Abstract
Systems of correlated particles appear in many fields of modern science and represent some of the most intractable computational problems in nature. The computational challenge in these systems arises when interactions become comparable to other energy scales, which makes the state of each particle depend on all other particles1. The lack of general solutions for the three-body problem and acceptable theory for strongly correlated electrons shows that our understanding of correlated systems fades when the particle number or the interaction strength increases. One of the hallmarks of interacting systems is the formation of multiparticle bound states2-9. Here we develop a high-fidelity parameterizable fSim gate and implement the periodic quantum circuit of the spin-½ XXZ model in a ring of 24 superconducting qubits. We study the propagation of these excitations and observe their bound nature for up to five photons. We devise a phase-sensitive method for constructing the few-body spectrum of the bound states and extract their pseudo-charge by introducing a synthetic flux. By introducing interactions between the ring and additional qubits, we observe an unexpected resilience of the bound states to integrability breaking. This finding goes against the idea that bound states in non-integrable systems are unstable when their energies overlap with the continuum spectrum. Our work provides experimental evidence for bound states of interacting photons and discovers their stability beyond the integrability limit.
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Affiliation(s)
- A Morvan
- Google Research, Mountain View, CA, USA
| | | | - X Mi
- Google Research, Mountain View, CA, USA
| | - C Neill
- Google Research, Mountain View, CA, USA
| | | | | | - D A Abanin
- Google Research, Mountain View, CA, USA
- Department of Theoretical Physics, University of Geneva, Geneva, Switzerland
| | - A Michailidis
- Department of Theoretical Physics, University of Geneva, Geneva, Switzerland
| | - R Acharya
- Google Research, Mountain View, CA, USA
| | - F Arute
- Google Research, Mountain View, CA, USA
| | - K Arya
- Google Research, Mountain View, CA, USA
| | - A Asfaw
- Google Research, Mountain View, CA, USA
| | - J Atalaya
- Google Research, Mountain View, CA, USA
| | - J C Bardin
- Google Research, Mountain View, CA, USA
- Department of Electrical and Computer Engineering, University of Massachusetts, Amherst, MA, USA
| | - J Basso
- Google Research, Mountain View, CA, USA
| | | | - G Bortoli
- Google Research, Mountain View, CA, USA
| | | | - J Bovaird
- Google Research, Mountain View, CA, USA
| | - L Brill
- Google Research, Mountain View, CA, USA
| | | | | | - D A Buell
- Google Research, Mountain View, CA, USA
| | - T Burger
- Google Research, Mountain View, CA, USA
| | - B Burkett
- Google Research, Mountain View, CA, USA
| | | | - Z Chen
- Google Research, Mountain View, CA, USA
| | - B Chiaro
- Google Research, Mountain View, CA, USA
| | - R Collins
- Google Research, Mountain View, CA, USA
| | - P Conner
- Google Research, Mountain View, CA, USA
| | | | - A L Crook
- Google Research, Mountain View, CA, USA
| | - B Curtin
- Google Research, Mountain View, CA, USA
| | | | | | - S Demura
- Google Research, Mountain View, CA, USA
| | | | - D Eppens
- Google Research, Mountain View, CA, USA
| | | | - L Faoro
- Google Research, Mountain View, CA, USA
| | - E Farhi
- Google Research, Mountain View, CA, USA
| | - R Fatemi
- Google Research, Mountain View, CA, USA
| | | | - E Forati
- Google Research, Mountain View, CA, USA
| | | | - B Foxen
- Google Research, Mountain View, CA, USA
| | - W Giang
- Google Research, Mountain View, CA, USA
| | - C Gidney
- Google Research, Mountain View, CA, USA
| | - D Gilboa
- Google Research, Mountain View, CA, USA
| | | | | | - J A Gross
- Google Research, Mountain View, CA, USA
| | | | | | | | | | | | - S Hong
- Google Research, Mountain View, CA, USA
| | - T Huang
- Google Research, Mountain View, CA, USA
| | - A Huff
- Google Research, Mountain View, CA, USA
| | | | | | - J Iveland
- Google Research, Mountain View, CA, USA
| | - E Jeffrey
- Google Research, Mountain View, CA, USA
| | - Z Jiang
- Google Research, Mountain View, CA, USA
| | - C Jones
- Google Research, Mountain View, CA, USA
| | - P Juhas
- Google Research, Mountain View, CA, USA
| | - D Kafri
- Google Research, Mountain View, CA, USA
| | - T Khattar
- Google Research, Mountain View, CA, USA
| | - M Khezri
- Google Research, Mountain View, CA, USA
| | - M Kieferová
- Google Research, Mountain View, CA, USA
- Centre for Quantum Computation and Communication Technology, Centre for Quantum Software and Information, Faculty of Engineering and Information Technology, University of Technology Sydney, Sydney, New South Wales, Australia
| | - S Kim
- Google Research, Mountain View, CA, USA
| | - A Y Kitaev
- Google Research, Mountain View, CA, USA
- Institute for Quantum Information and Matter, California Institute of Technology, Pasadena, CA, USA
| | | | - A R Klots
- Google Research, Mountain View, CA, USA
| | - A N Korotkov
- Google Research, Mountain View, CA, USA
- Department of Electrical and Computer Engineering, University of California, Riverside, CA, USA
| | | | | | | | - P Laptev
- Google Research, Mountain View, CA, USA
| | - K-M Lau
- Google Research, Mountain View, CA, USA
| | - L Laws
- Google Research, Mountain View, CA, USA
| | - J Lee
- Google Research, Mountain View, CA, USA
| | - K W Lee
- Google Research, Mountain View, CA, USA
| | | | - A T Lill
- Google Research, Mountain View, CA, USA
| | - W Liu
- Google Research, Mountain View, CA, USA
| | | | - F Malone
- Google Research, Mountain View, CA, USA
| | - O Martin
- Google Research, Mountain View, CA, USA
| | | | - M McEwen
- Google Research, Mountain View, CA, USA
- Department of Physics, University of California, Santa Barbara, CA, USA
| | | | - K C Miao
- Google Research, Mountain View, CA, USA
| | - M Mohseni
- Google Research, Mountain View, CA, USA
| | | | - E Mount
- Google Research, Mountain View, CA, USA
| | | | - O Naaman
- Google Research, Mountain View, CA, USA
| | - M Neeley
- Google Research, Mountain View, CA, USA
| | | | - M Newman
- Google Research, Mountain View, CA, USA
| | - A Nguyen
- Google Research, Mountain View, CA, USA
| | - M Nguyen
- Google Research, Mountain View, CA, USA
| | - M Y Niu
- Google Research, Mountain View, CA, USA
| | | | - R Olenewa
- Google Research, Mountain View, CA, USA
| | | | - R Potter
- Google Research, Mountain View, CA, USA
| | | | - N C Rubin
- Google Research, Mountain View, CA, USA
| | - N Saei
- Google Research, Mountain View, CA, USA
| | - D Sank
- Google Research, Mountain View, CA, USA
| | | | | | | | | | | | - A Shorter
- Google Research, Mountain View, CA, USA
| | - V Shvarts
- Google Research, Mountain View, CA, USA
| | - J Skruzny
- Google Research, Mountain View, CA, USA
| | - W C Smith
- Google Research, Mountain View, CA, USA
| | - D Strain
- Google Research, Mountain View, CA, USA
| | | | - Y Su
- Google Research, Mountain View, CA, USA
| | - M Szalay
- Google Research, Mountain View, CA, USA
| | - A Torres
- Google Research, Mountain View, CA, USA
| | - G Vidal
- Google Research, Mountain View, CA, USA
| | | | | | - T White
- Google Research, Mountain View, CA, USA
| | - C Xing
- Google Research, Mountain View, CA, USA
| | - Z Yao
- Google Research, Mountain View, CA, USA
| | - P Yeh
- Google Research, Mountain View, CA, USA
| | - J Yoo
- Google Research, Mountain View, CA, USA
| | - A Zalcman
- Google Research, Mountain View, CA, USA
| | - Y Zhang
- Google Research, Mountain View, CA, USA
| | - N Zhu
- Google Research, Mountain View, CA, USA
| | - H Neven
- Google Research, Mountain View, CA, USA
| | - D Bacon
- Google Research, Mountain View, CA, USA
| | - J Hilton
- Google Research, Mountain View, CA, USA
| | - E Lucero
- Google Research, Mountain View, CA, USA
| | - R Babbush
- Google Research, Mountain View, CA, USA
| | - S Boixo
- Google Research, Mountain View, CA, USA
| | - A Megrant
- Google Research, Mountain View, CA, USA
| | - J Kelly
- Google Research, Mountain View, CA, USA
| | - Y Chen
- Google Research, Mountain View, CA, USA
| | | | - I Aleiner
- Google Research, Mountain View, CA, USA.
| | - L B Ioffe
- Google Research, Mountain View, CA, USA.
| | - P Roushan
- Google Research, Mountain View, CA, USA.
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8
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Mi X, Sonner M, Niu MY, Lee KW, Foxen B, Acharya R, Aleiner I, Andersen TI, Arute F, Arya K, Asfaw A, Atalaya J, Bardin JC, Basso J, Bengtsson A, Bortoli G, Bourassa A, Brill L, Broughton M, Buckley BB, Buell DA, Burkett B, Bushnell N, Chen Z, Chiaro B, Collins R, Conner P, Courtney W, Crook AL, Debroy DM, Demura S, Dunsworth A, Eppens D, Erickson C, Faoro L, Farhi E, Fatemi R, Flores L, Forati E, Fowler AG, Giang W, Gidney C, Gilboa D, Giustina M, Dau AG, Gross JA, Habegger S, Harrigan MP, Hoffmann M, Hong S, Huang T, Huff A, Huggins WJ, Ioffe LB, Isakov SV, Iveland J, Jeffrey E, Jiang Z, Jones C, Kafri D, Kechedzhi K, Khattar T, Kim S, Kitaev AY, Klimov PV, Klots AR, Korotkov AN, Kostritsa F, Kreikebaum JM, Landhuis D, Laptev P, Lau KM, Lee J, Laws L, Liu W, Locharla A, Martin O, McClean JR, McEwen M, Meurer Costa B, Miao KC, Mohseni M, Montazeri S, Morvan A, Mount E, Mruczkiewicz W, Naaman O, Neeley M, Neill C, Newman M, O’Brien TE, Opremcak A, Petukhov A, Potter R, Quintana C, Rubin NC, Saei N, Sank D, Sankaragomathi K, Satzinger KJ, Schuster C, Shearn MJ, Shvarts V, Strain D, Su Y, Szalay M, Vidal G, Villalonga B, Vollgraff-Heidweiller C, White T, Yao Z, Yeh P, Yoo J, Zalcman A, Zhang Y, Zhu N, Neven H, Bacon D, Hilton J, Lucero E, Babbush R, Boixo S, Megrant A, Chen Y, Kelly J, Smelyanskiy V, Abanin DA, Roushan P. Noise-resilient edge modes on a chain of superconducting qubits. Science 2022; 378:785-790. [DOI: 10.1126/science.abq5769] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
Abstract
Inherent symmetry of a quantum system may protect its otherwise fragile states. Leveraging such protection requires testing its robustness against uncontrolled environmental interactions. Using 47 superconducting qubits, we implement the one-dimensional kicked Ising model, which exhibits nonlocal Majorana edge modes (MEMs) with
ℤ
2
parity symmetry. We find that any multiqubit Pauli operator overlapping with the MEMs exhibits a uniform late-time decay rate comparable to single-qubit relaxation rates, irrespective of its size or composition. This characteristic allows us to accurately reconstruct the exponentially localized spatial profiles of the MEMs. Furthermore, the MEMs are found to be resilient against certain symmetry-breaking noise owing to a prethermalization mechanism. Our work elucidates the complex interplay between noise and symmetry-protected edge modes in a solid-state environment.
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Affiliation(s)
- X. Mi
- Google Research, Mountain View, CA, USA
| | - M. Sonner
- Department of Theoretical Physics, University of Geneva, Geneva, Switzerland
| | - M. Y. Niu
- Google Research, Mountain View, CA, USA
| | - K. W. Lee
- Google Research, Mountain View, CA, USA
| | - B. Foxen
- Google Research, Mountain View, CA, USA
| | | | | | | | - F. Arute
- Google Research, Mountain View, CA, USA
| | - K. Arya
- Google Research, Mountain View, CA, USA
| | - A. Asfaw
- Google Research, Mountain View, CA, USA
| | | | - J. C. Bardin
- Google Research, Mountain View, CA, USA
- Department of Electrical and Computer Engineering, University of Massachusetts, Amherst, MA, USA
| | - J. Basso
- Google Research, Mountain View, CA, USA
| | | | | | | | - L. Brill
- Google Research, Mountain View, CA, USA
| | | | | | | | | | | | - Z. Chen
- Google Research, Mountain View, CA, USA
| | - B. Chiaro
- Google Research, Mountain View, CA, USA
| | | | - P. Conner
- Google Research, Mountain View, CA, USA
| | | | | | | | - S. Demura
- Google Research, Mountain View, CA, USA
| | | | - D. Eppens
- Google Research, Mountain View, CA, USA
| | | | - L. Faoro
- Google Research, Mountain View, CA, USA
| | - E. Farhi
- Google Research, Mountain View, CA, USA
| | - R. Fatemi
- Google Research, Mountain View, CA, USA
| | - L. Flores
- Google Research, Mountain View, CA, USA
| | - E. Forati
- Google Research, Mountain View, CA, USA
| | | | - W. Giang
- Google Research, Mountain View, CA, USA
| | - C. Gidney
- Google Research, Mountain View, CA, USA
| | - D. Gilboa
- Google Research, Mountain View, CA, USA
| | | | - A. G. Dau
- Google Research, Mountain View, CA, USA
| | | | | | | | | | - S. Hong
- Google Research, Mountain View, CA, USA
| | - T. Huang
- Google Research, Mountain View, CA, USA
| | - A. Huff
- Google Research, Mountain View, CA, USA
| | | | | | | | | | | | - Z. Jiang
- Google Research, Mountain View, CA, USA
| | - C. Jones
- Google Research, Mountain View, CA, USA
| | - D. Kafri
- Google Research, Mountain View, CA, USA
| | | | | | - S. Kim
- Google Research, Mountain View, CA, USA
| | - A. Y. Kitaev
- Google Research, Mountain View, CA, USA
- Institute for Quantum Information and Matter, California Institute of Technology, Pasadena, CA, USA
| | | | | | - A. N. Korotkov
- Google Research, Mountain View, CA, USA
- Department of Electrical and Computer Engineering, University of California, Riverside, CA, USA
| | | | | | | | - P. Laptev
- Google Research, Mountain View, CA, USA
| | - K.-M. Lau
- Google Research, Mountain View, CA, USA
| | - J. Lee
- Google Research, Mountain View, CA, USA
| | - L. Laws
- Google Research, Mountain View, CA, USA
| | - W. Liu
- Google Research, Mountain View, CA, USA
| | | | - O. Martin
- Google Research, Mountain View, CA, USA
| | | | - M. McEwen
- Google Research, Mountain View, CA, USA
- Department of Physics, University of California, Santa Barbara, CA, USA
| | | | | | | | | | - A. Morvan
- Google Research, Mountain View, CA, USA
| | - E. Mount
- Google Research, Mountain View, CA, USA
| | | | - O. Naaman
- Google Research, Mountain View, CA, USA
| | - M. Neeley
- Google Research, Mountain View, CA, USA
| | - C. Neill
- Google Research, Mountain View, CA, USA
| | - M. Newman
- Google Research, Mountain View, CA, USA
| | | | | | | | - R. Potter
- Google Research, Mountain View, CA, USA
| | | | | | - N. Saei
- Google Research, Mountain View, CA, USA
| | - D. Sank
- Google Research, Mountain View, CA, USA
| | | | | | | | | | | | - D. Strain
- Google Research, Mountain View, CA, USA
| | - Y. Su
- Google Research, Mountain View, CA, USA
| | - M. Szalay
- Google Research, Mountain View, CA, USA
| | - G. Vidal
- Google Research, Mountain View, CA, USA
| | | | | | - T. White
- Google Research, Mountain View, CA, USA
| | - Z. Yao
- Google Research, Mountain View, CA, USA
| | - P. Yeh
- Google Research, Mountain View, CA, USA
| | - J. Yoo
- Google Research, Mountain View, CA, USA
| | | | - Y. Zhang
- Google Research, Mountain View, CA, USA
| | - N. Zhu
- Google Research, Mountain View, CA, USA
| | - H. Neven
- Google Research, Mountain View, CA, USA
| | - D. Bacon
- Google Research, Mountain View, CA, USA
| | - J. Hilton
- Google Research, Mountain View, CA, USA
| | - E. Lucero
- Google Research, Mountain View, CA, USA
| | | | - S. Boixo
- Google Research, Mountain View, CA, USA
| | | | - Y. Chen
- Google Research, Mountain View, CA, USA
| | - J. Kelly
- Google Research, Mountain View, CA, USA
| | | | - D. A. Abanin
- Google Research, Mountain View, CA, USA
- Department of Theoretical Physics, University of Geneva, Geneva, Switzerland
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9
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Silva dos Santos M, Schuster C, Causon T, Jungbauer A. Separation of organic acids using nanomembranes with tunable permeation characteristics. CHEM-ING-TECH 2022. [DOI: 10.1002/cite.202255077] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- M. Silva dos Santos
- Austrian Centre of Industrial Biotechnology Muthgasse 11 1190 Vienna Austria
| | - C. Schuster
- Paris Lodron University Salzburg Department of Chemistry and Physics of Materials Jakob-Haringer-Str. 2a 5020 Salzburg Austria
| | - T. Causon
- University of Natural Resources and Life Sciences Institute of Analytical Chemistry Muthgasse 18 1190 Vienna Austria
| | - A. Jungbauer
- Austrian Centre of Industrial Biotechnology Muthgasse 11 1190 Vienna Austria
- University of Natural Resources and Life Sciences Institute of Analytical Chemistry Muthgasse 18 1190 Vienna Austria
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Kristensen LE, Behrens F, Puig L, Reich A, Holzkaemper T, Brnabic A, Ng K, Liu Leage S, Schuster C, Pinter A. AB0879 Interim analysis of baseline characteristics and 12-week outcomes for a subset of patients with moderate-to-severe plaque psoriasis and psoriatic arthritis from the Psoriasis Study of Health Outcomes. Ann Rheum Dis 2022. [DOI: 10.1136/annrheumdis-2022-eular.166] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
Abstract
BackgroundApproximately 30% of patients (pts) with plaque psoriasis (PsO) develop psoriatic arthritis (PsA)1, which is associated with high Psoriasis Area and Severity Index (PASI) and nail involvement. The Psoriasis Study of Health Outcomes (PSoHO) is a 3-year (yr), international, prospective, observational cohort study comparing the effectiveness of anti-IL-17A biologics to all other approved biologics in pts with moderate-to-severe PsO.ObjectivesThis interim subset analysis describes the baseline characteristics and Week 12 (W12) effectiveness in pts with moderate-to-severe PsO and PsA in PSoHO.MethodsAdults with moderate-to-severe PsO for ≥6 months who initiated/switched biologic treatment during routine medical care were enrolled. PsA diagnosis was recorded by the dermatologists based on the medical history and/or information provided by the patient. W12 effectiveness was assessed by the proportion of pts achieving almost clear or clear skin defined by ≥90% improvement in PASI, affected Body Surface Area (BSA), Dermatology Life Quality Index (DLQI), and Patient Global Assessment of Disease Severity (PatGA). Musculoskeletal endpoints were not collected. Data were analysed descriptively, using mean (standard deviation [SD]) or median ([Q1/Q3]) for continuous variables and n, % and 95% confidence limits for categorical variables.ResultsOverall, 1981 pts were enrolled in this study, of whom 461 (23.3%) had a PsA diagnosis and received either anti-IL-17A (n=227; 49.2%) or other biologics (n=234; 50.8%). This subset of pts had a mean age of 48.7 yrs and a median disease duration of 18.9 yrs for PsO and 5.6 yrs for PsA (Table 1).Table 1.Baseline characteristics for PsO patients with PsA. Mean (SD) reported for all available data for that measure, unless stated otherwise.Overall (n=461)Anti-IL-17A (n=227)Other Biologics (n=234)Age, yrs48.7 (12.9)50.9 (12.9)46.6 (12.6)Male, n (%)232 (50.3)112 (49.3)120 (51.3)BMI (kg/m2)29.7 (6.2)29.8 (5.9)29.6 (6.4)Smoking status – Current, n (%)100 (25.4)41 (21.1)59 (29.5)Disease duration (PsA), yrs, median (Q1/Q3)5.6(2.2/13.1)5.6(2.0 / 13.8)5.5(2.3 / 12.8)Disease duration (PsO), yrs, median (Q1/Q3)18.9(9.7 / 28.6)18.9(9.2 / 30.3)18.7(10.1 / 27.3)Any previous biologic therapy, n (%)249 (54.0)123 (54.2)126 (53.8)PASI14.3 (9.3)13.6 (8.1)15.0 (10.3)BSA, %21.7 (19.4)19.8 (17.3)23.5 (21.1)mNAPSI16.6 (22.8)16.5 (25.5)16.7 (20.1)Presence of nail PsO, n (%)217 (47.2)103 (45.4)114 (48.9)PatGA3.5 (1.2)3.5 (1.3)3.6 (1.2)DLQI13.6 (7.9)13.4 (7.8)13.7 (8.0)HADS Depression score >10, n (%)73 (19.3)38 (20.5)35 (18.1)HADS Anxiety score >10, n (%)124 (32.8)62 (33.5)62 (32.1)BMI = Body Mass Index; BSA = Body Surface Area; DLQI = Dermatology Life Quality Index; HADS = Hospital Anxiety and Depression Scale; HADS >10 indicates significant symptoms of depression/anxiety; mNAPSI = Modified Nail Psoriasis Severity Index; PASI = Psoriasis Area and Severity Index; PatGA = Patient Global Assessment of Disease Severity; Q1/Q3 = Quartile 1/3.At W12, 62.4% and 42.6% of anti-IL-17A-treated pts achieved PASI90 and PASI100, respectively, compared with 34.2% and 16.8% in the other biologics cohort, respectively (Figure 1). BSA <3% was reached by 70.9% of anti-IL-17A-treated pts and 49.5% in the other biologics cohort, while 71.2% and 44.8%, respectively, reached PatGA 0/1. Among pts with baseline DLQI ≥2, 38.0% and 27.1% of the anti-IL-17A and other biologics cohorts, respectively, reached DLQI 0/1.Figure 1.Percentage of patients receiving anti-IL-17A or other biologics who achieved PASI75/90/100, absolute PASI ≤1, BSA <3%, PatGA 0/1 and DLQI 0/1 (baseline DLQI ≥2) at Week 12. Bars represent upper 95% confidence limits.ConclusionThe effectiveness of blocking IL-17A on skin manifestations and on quality-of-life improvements in pts with PsO and PsA in the real-world study was consistent with observations from clinical trials.References[1]Zabotti A, et al. RMD Open 2019;5: e001067Disclosure of InterestsLars Erik Kristensen Speakers bureau: Pfizer, AbbVie, Amgen, UCB, Gilead, Biogen, BMS, MSD, Novartis, Eli Lilly, and Janssen pharmaceuticals., Consultant of: Pfizer, AbbVie, Amgen, UCB, Gilead, Biogen, BMS, MSD, Novartis, Eli Lilly, and Janssen pharmaceuticals., Grant/research support from: IIT research grants from Pfizer, AbbVie, UCB, Gilead, Biogen, Novartis, Eli Lilly, and Janssen pharmaceuticals., Frank Behrens Speakers bureau: Amgen, AbbVie, Pfizer, Roche, Chugai, UCB, BMS, Celgene, MSD, Novartis, Biotest, Janssen, Genzyme, Eli Lilly, Boehringer and Sandoz, Consultant of: Amgen, AbbVie, Pfizer, Roche, Chugai, UCB, BMS, Celgene, MSD, Novartis, Biotest, Janssen, Genzyme, Eli Lilly, Boehringer and Sandoz, Grant/research support from: AbbVie, Pfizer, Roche, Chugai, GSK and Janssen, Luis Puig Speakers bureau: Celgene, Janssen, Eli Lilly, Novartis, Pfizer, Consultant of: Abbvie, Almirall, Amgen, Baxalta, Biogen, Boehringer Ingelheim, Bristol Myers Squibb, Celgene, Fresenius-Kabi, Janssen, JS BIOCAD, Leo-Pharma, Eli Lilly, Mylan, Novartis, Pfizer, Regeneron, Roche, Sandoz, Samsung-Bioepis, Sanofi, UCB, Grant/research support from: Abbvie, Almirall, Amgen, Boehringer Ingelheim, Celgene, Janssen, Leo-Pharma, Eli Lilly, Novartis, Pfizer, Regeneron, Roche, Sanofi, UCB, Adam Reich Speakers bureau: Abbvie, Novartis, Janssen, Pfizer, Sandoz, Galderma, Eli Lilly, Consultant of: Abbvie, Novartis, Janssen, Pfizer, Sandoz, Galderma, Eli Lilly, Thorsten Holzkaemper Shareholder of: Eli Lilly and Company, Employee of: Eli Lilly and Company, Alan Brnabic Shareholder of: Eli Lilly and Company, Employee of: Eli Lilly and Company, Khai Ng Shareholder of: Eli Lilly and Company, Employee of: Eli Lilly and Company, Soyi Liu Leage Shareholder of: Eli Lilly and Company, Employee of: Eli Lilly and Company, Christopher Schuster Shareholder of: Eli Lilly and Company, Employee of: Eli Lilly and Company, Andreas Pinter Speakers bureau: AbbVie, Almirall-Hermal, Amgen, Biogen Idec, Biontec, Boehringer-Ingelheim, Celgene, GSK, Eli Lilly, Galderma, Hexal, Janssen, LEO-Pharma, MC2, Medac, Merck Serono, Mitsubishi, MSD, Novartis, Pascoe, Pfizer, Tigercat Pharma, Regeneron, Roche, Sandoz Biopharmaceuticals, Sanofi-Genzyme, Schering-Plough and UCB Pharma, Consultant of: AbbVie, Almirall-Hermal, Amgen, Biogen Idec, Biontec, Boehringer-Ingelheim, Celgene, GSK, Eli Lilly, Galderma, Hexal, Janssen, LEO-Pharma, MC2, Medac, Merck Serono, Mitsubishi, MSD, Novartis, Pascoe, Pfizer, Tigercat Pharma, Regeneron, Roche, Sandoz Biopharmaceuticals, Sanofi-Genzyme, Schering-Plough and UCB Pharma
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11
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Gaillard V, Lhuillier A, Bigot C, Pierard L, Trensz P, Schuster C, Malouf G, Fritsch A, Borchiellini D, Geoffrois L, Barthelemy P. CN54 Impact of the app-based and nurse-led supportive care program AKO@dom on dose-intensity of oral targeted therapies in patients with metastatic renal cell cancer: A multicentric observational retrospective study. Ann Oncol 2021. [DOI: 10.1016/j.annonc.2021.08.684] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022] Open
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12
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Seyger MMB, Reich A, El Baou C, Schuster C, Riedl E, Paller AS. Efficacy of ixekizumab on nail psoriasis in paediatric patients with moderate-to-severe psoriasis: a post hoc analysis from IXORA-PEDS. J Eur Acad Dermatol Venereol 2021; 35:e911-e913. [PMID: 34320259 PMCID: PMC9291077 DOI: 10.1111/jdv.17564] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2021] [Revised: 06/23/2021] [Accepted: 07/27/2021] [Indexed: 12/01/2022]
Affiliation(s)
- M M B Seyger
- Department of Dermatology, Radboud University Nijmegen Medical Center, Nijmegen, The Netherlands
| | - A Reich
- Department of Dermatology, Institute of Medical Sciences, Medical College of Rzeszow University, Rzeszow, Poland
| | - C El Baou
- Eli Lilly and Company, Indianapolis, IN, USA
| | - C Schuster
- Eli Lilly and Company, Indianapolis, IN, USA.,Department of Dermatology, Medical University of Vienna, Vienna, Austria
| | - E Riedl
- Eli Lilly and Company, Indianapolis, IN, USA.,Department of Dermatology, Medical University of Vienna, Vienna, Austria
| | - A S Paller
- Department of Dermatology, Northwestern University Feinberg School of Medicine, Chicago, IL, USA
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13
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Blauvelt A, Ramharter M, Cohen AD, Xu W, Patel H, Schuster C, Riedl E, Puig L. An integrated safety analysis of treatment-emergent fungal infections in patients with psoriasis treated with ixekizumab from 16 clinical studies. J Eur Acad Dermatol Venereol 2021; 35:e828-e831. [PMID: 34310771 DOI: 10.1111/jdv.17554] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- A Blauvelt
- Oregon Medical Research Center, Portland, OR, USA
| | - M Ramharter
- Bernhard Nocht Institute for Tropical Medicine, I Department of Medicine, University Medical Center Hamburg-Eppendorf, Hamburg, Germany
| | - A D Cohen
- Siaal Research Center for Family Medicine and Primary Care, Faculty of Health Science, Ben-Gurion University, Be'er Sheva, Israel
| | - W Xu
- Eli Lilly and Company, Indianapolis, IN, USA
| | - H Patel
- Eli Lilly and Company, Indianapolis, IN, USA
| | - C Schuster
- Eli Lilly and Company, Indianapolis, IN, USA
| | - E Riedl
- Eli Lilly and Company, Indianapolis, IN, USA
| | - L Puig
- Dermatology Department, Hospital de la Santa Creu i Sant Pau, Barcelona, Spain
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Brunner PM, Conrad C, Vender R, Grond S, Schuster C, Patel H, Xu W, Carrascosa Carrillo JM. Integrated safety analysis of treatment-emergent eczematous reactions in patients with moderate-to-severe psoriasis treated with ixekizumab, etanercept and ustekinumab. Br J Dermatol 2021; 185:865-867. [PMID: 34076896 PMCID: PMC8518506 DOI: 10.1111/bjd.20527] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2021] [Revised: 04/06/2021] [Accepted: 05/30/2021] [Indexed: 01/18/2023]
Affiliation(s)
- P M Brunner
- Department of Dermatology, Medical University of Vienna, Vienna, Austria
| | - C Conrad
- Department of Dermatology, Lausanne University Hospital CHUV, Lausanne, Switzerland
| | - R Vender
- Dermatrials Research Inc, Hamilton, ON, Canada
| | - S Grond
- Eli Lilly and Company, Indianapolis, IN, USA
| | - C Schuster
- Department of Dermatology, Medical University of Vienna, Vienna, Austria.,Eli Lilly and Company, Indianapolis, IN, USA
| | - H Patel
- Eli Lilly and Company, Indianapolis, IN, USA
| | - W Xu
- Eli Lilly and Company, Indianapolis, IN, USA
| | - J M Carrascosa Carrillo
- Department of Dermatology, Hospital Universitari Germans Trias I Pujol, Universitat Autònoma de Barcelona, Barcelona, Spain
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15
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Bedretdinov M, Stepanov O, Sledkov R, Schuster C. KORSAR/GP and SOCRAT/V1 codes’ validation for the loss of cooling at spent fuel pool conditions. Nuclear Engineering and Design 2021. [DOI: 10.1016/j.nucengdes.2021.111089] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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16
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Leutz A, Pinter A, Thaçi D, Augustin M, Schuster C, Fotiou K, Hundemer H, Saure D, Mrowietz U, Reich K. Efficacy and safety of ixekizumab after switching from fumaric acid esters or methotrexate in patients with moderate‐to‐severe plaque psoriasis naïve to systemic treatment. Br J Dermatol 2020; 184:548-550. [DOI: 10.1111/bjd.19558] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/06/2020] [Revised: 09/10/2020] [Accepted: 09/10/2020] [Indexed: 01/22/2023]
Affiliation(s)
- A. Leutz
- Lilly Deutschland GmbH Bad Homburg Germany
| | - A. Pinter
- University Clinic of Frankfurt am Main Department of Dermatology Venereology and Allergology Frankfurt am Main Germany
| | - D. Thaçi
- Institute and Comprehensive Center Inflammation Medicine University zu LübeckUniversity Hospital Schleswig‐Holstein Campus Lübeck Lübeck Germany
| | - M. Augustin
- Institute for Health Services Research in Dermatology and Nursing (IVDP) University Medical Center Hamburg‐Eppendorf (UKE) Hamburg Germany
| | | | - K. Fotiou
- Lilly Deutschland GmbH Bad Homburg Germany
| | | | - D. Saure
- Lilly Deutschland GmbH Bad Homburg Germany
| | - U. Mrowietz
- Psoriasis‐Center Department of Dermatology University Medical Center Schleswig‐Holstein Campus Kiel Kiel Germany
| | - K. Reich
- Translational Research in Inflammatory Skin Diseases Institute for Health Services Research in Dermatology and NursingUniversity Medical Center Hamburg‐Eppendorf, and Skinflammation Center Hamburg Germany
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Hadj Taieb K, Gharsallah H, Ksentini I, Leclerque A, Schuster C, Cheffi M, Naayma S, Triki MA, Ksantini M. Screening of biological activities of fungi associated with pistachio bark beetle, Chaetoptelius vestitus (Coleoptera, Curculionidae), infesting pistachio cultivations in Tunisia. J Appl Microbiol 2020; 128:1472-1485. [PMID: 31913566 DOI: 10.1111/jam.14572] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/24/2019] [Accepted: 12/30/2019] [Indexed: 11/26/2022]
Abstract
AIMS In this study, we aimed to explore the enzymatic diversity, the entomopathogenic and the antimicrobial potentialities of fungi associated with the pistachio bark beetle, Chaetoptelius vestitus. METHODS AND RESULTS A total of 40 isolates were screened for enzymatic diversity. Most of them, 92·5%, were able to produce at least two of the screened enzymes. Pathogenic assays performed on C. vestitus showed a high entomopathogenic activity of the isolates Ata_io_1 (A. tamarii), Fve_io_1 (F. verticillioides), Tpi_io_1 (T. pinophilus), Pal_io_1 (P. album), Pbi_io_2 (Penicillium bilaiae) and Pch_io_1 (P. chrysogenum), as based on mean mortality of C. vestitus. A screening of antimicrobial activity using well diffusion method showed that the isolates Tro_io_1 (T. pinophilus), Tat_io_1 (T. atroroseus) and Pch_io_1 (P. chrysogenum) presented the highest antibacterial activity. Furthermore, Mgu_io_1 (M. guilliermondii), Asc_io_1 (A. sclerotiorum), Ata_io_1 (A. tamarii), G. lavendula (Gla_io_1), Pva_io_1 (P. variotii), Pul_io_1 (P. ulaiense), Tat_io_1 (T. atroroseus) and Tro_io_1 (T. roseum) were active against at least two of the three tested fungal phytopathogens. CONCLUSIONS Fungal isolates representing entomopathogenic activity and a broad spectrum of antimicrobial activities can be considered as promising resources for biological pistachio trees protection. SIGNIFICANCE AND IMPACT OF THE STUDY Fungi associated with C. vestitus were investigated for detecting their potential biotechnological applications.
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Affiliation(s)
- K Hadj Taieb
- Institut Supérieur Agronomique de Chott Meriem, Université de Sousse, Sousse, Tunisie.,Institut de l'Olivier, Université de Sfax, Sfax, Tunisie
| | - H Gharsallah
- Institut de l'Olivier, Université de Sfax, Sfax, Tunisie
| | - I Ksentini
- Institut de l'Olivier, Université de Sfax, Sfax, Tunisie
| | - A Leclerque
- Institute for Microbiology and Biochemistry, Geisenheim University, Geisenheim, Germany
| | - C Schuster
- Institute for Microbiology and Biochemistry, Geisenheim University, Geisenheim, Germany
| | - M Cheffi
- Institut de l'Olivier, Université de Sfax, Sfax, Tunisie
| | - S Naayma
- Institut de l'Olivier, Université de Sfax, Sfax, Tunisie
| | - M A Triki
- Institut de l'Olivier, Université de Sfax, Sfax, Tunisie
| | - M Ksantini
- Institut de l'Olivier, Université de Sfax, Sfax, Tunisie
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Artinger J, Read M, Schuster C, Archer R, Atilla A. Effects of dexmedetomidine combined with bupivacaine on sciatic nerve blockade in dogs. Vet Anaesth Analg 2019. [DOI: 10.1016/j.vaa.2019.08.007] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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19
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Straume O, Lorens J, Gausdal G, Gjertsen B, Schuster C. A randomized phase Ib/II study of the selective small molecule Axl inhibitor bemcentinib (BGB324) in combination with either dabrafenib/trametinib (D/T) or pembrolizumab in patients with metastatic melanoma. Ann Oncol 2019. [DOI: 10.1093/annonc/mdz255.025] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
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20
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Schuster C, Perrin E, Riedl E. Comments on ‘French guidelines on the use of systemic treatments for moderate‐to‐severe psoriasis in adults’. J Eur Acad Dermatol Venereol 2019; 33:e310. [PMID: 31206204 PMCID: PMC6771809 DOI: 10.1111/jdv.15739] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Linked article: F. Amatore et al. J Eur Acad Dermatol Venereol 2019; 33: 464–483. https://doi.org/10.1111/jdv.15340
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Affiliation(s)
- C. Schuster
- Eli Lilly Regional Operations GmbH Vienna Austria
| | | | - E. Riedl
- Eli Lilly Regional Operations GmbH Vienna Austria
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21
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Hadj Taieb K, Gharsallah H, Ksentini I, Schuster C, Fernández‐Bravo M, Garrido‐Jurado I, Quesada‐Moraga E, Leclerque A, Triki M, Ksantini M. Phytopathogenic and antagonistic potentialities of fungi associated with pistachio bark beetle,
Chaetoptelius vestitus
(Coleoptera, Curculionidae), infesting pistachio (
Pistacia vera
) in Tunisia. J Appl Microbiol 2019; 126:1821-1834. [DOI: 10.1111/jam.14272] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/10/2018] [Revised: 02/03/2019] [Accepted: 03/17/2019] [Indexed: 02/03/2023]
Affiliation(s)
- K. Hadj Taieb
- Université de Sousse Institut Supérieur Agronomique de Chott Meriem Sousse Tunisie
- Université de Sfax Institut de l'Olivier Sfax Tunisie
| | - H. Gharsallah
- Université de Sfax Institut de l'Olivier Sfax Tunisie
| | - I. Ksentini
- Université de Sfax Institut de l'Olivier Sfax Tunisie
| | - C. Schuster
- Institute for Microbiology and Biochemistry Geisenheim University Geisenheim Germany
| | - M. Fernández‐Bravo
- Department of Agronomy ETSIAM University of Cordoba, Campus de Rabanales Cordoba Spain
| | - I. Garrido‐Jurado
- Department of Agronomy ETSIAM University of Cordoba, Campus de Rabanales Cordoba Spain
| | - E. Quesada‐Moraga
- Department of Agronomy ETSIAM University of Cordoba, Campus de Rabanales Cordoba Spain
| | - A. Leclerque
- Institute for Microbiology and Biochemistry Geisenheim University Geisenheim Germany
| | - M.A. Triki
- Université de Sfax Institut de l'Olivier Sfax Tunisie
| | - M. Ksantini
- Université de Sfax Institut de l'Olivier Sfax Tunisie
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22
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Aichelburg MC, Pinkowicz A, Schuster C, Volc-Platzer B, Tanew A. Patch granuloma annulare: clinicopathological characteristics and response to phototherapy. Br J Dermatol 2019; 181:198-199. [PMID: 30609014 PMCID: PMC6850090 DOI: 10.1111/bjd.17606] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/30/2023]
Affiliation(s)
- M C Aichelburg
- Department of Dermatology, Medical University of Vienna, Vienna, Austria.,Department of Dermatology, Sozialmedizinisches Zentrum Ost-Donauspital, Vienna, Austria
| | - A Pinkowicz
- Department of Dermatology, Medical University of Vienna, Vienna, Austria
| | - C Schuster
- Department of Dermatology, Medical University of Vienna, Vienna, Austria
| | - B Volc-Platzer
- Department of Dermatology, Sozialmedizinisches Zentrum Ost-Donauspital, Vienna, Austria
| | - A Tanew
- Department of Dermatology, Medical University of Vienna, Vienna, Austria
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23
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Schuster C, Gausdal G, Gjertsen B, Lorens J, Straume O. Update on the randomised phase Ib/II study of the selective small molecule AXL inhibitor bemcentinib (BGB324) in combination with either dabrafenib/trametinib or pembrolizumab in patients with metastatic melanoma. Ann Oncol 2018. [DOI: 10.1093/annonc/mdy289.022] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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24
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Stasik S, Schuster C, Ortlepp C, Platzbecker U, Bornhäuser M, Schetelig J, Ehninger G, Folprecht G, Thiede C. An optimized targeted Next-Generation Sequencing approach for sensitive detection of single nucleotide variants. Biomol Detect Quantif 2018; 15:6-12. [PMID: 29349042 PMCID: PMC5766748 DOI: 10.1016/j.bdq.2017.12.001] [Citation(s) in RCA: 26] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/25/2017] [Revised: 11/27/2017] [Accepted: 12/18/2017] [Indexed: 01/06/2023]
Abstract
NGS based detection of low-level SNVs is feasible with sensitivities up to 10−4. PCR-induced bias could be significantly reduced by the choice of adequate enzymes. The prevalent transition vs. transversion bias affects site-specific detection limits. Results from clinical data validated the feasibility of NGS-based MRD detection. Results help to select suitable biomarkers for MRD quantification.
Monitoring of minimal residual disease (MRD) has become an important clinical aspect for early relapse detection during follow-up care after cancer treatment. Still, the sensitive detection of single base pair point mutations via Next-Generation Sequencing (NGS) is hampered mainly due to high substitution error rates. We evaluated the use of NGS for the detection of low-level variants on an Ion Torrent PGM system. As a model case we used the c.1849G > T (p.Val617Phe) mutation of the JAK2-gene. Several reaction parameters (e.g. choice of DNA-polymerase) were evaluated and a comprehensive analysis of substitution errors was performed. Using optimized conditions, we reliably detected JAK2 c.1849G > T VAFs in the range of 0.01–0.0015% which, in combination with results obtained from clinical data, validated the feasibility of NGS-based MRD detection. Particularly, PCR-induced transitions (mainly G > A and C > T) were the major source of error, which could be significantly reduced by the application of proofreading enzymes. The integration of NGS results for several common point mutations in various oncogenes (i.e. IDH1 and 2, c-KIT, DNMT3A, NRAS, KRAS, BRAF) revealed that the prevalent transition vs. transversion bias (3.57:1) has an impact on site-specific detection limits of low-level mutations. These results may help to select suitable markers for MRD detection and to identify individual cut-offs for detection and quantification.
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Affiliation(s)
- S. Stasik
- Universitätsklinikum Carl Gustav Carus, Medizinische Klinik und Poliklinik I, Dresden, Germany
- National Center for Tumor Diseases (NCT), Heidelberg, Partner Site Dresden, Germany
| | | | | | - U. Platzbecker
- Universitätsklinikum Carl Gustav Carus, Medizinische Klinik und Poliklinik I, Dresden, Germany
| | - M. Bornhäuser
- Universitätsklinikum Carl Gustav Carus, Medizinische Klinik und Poliklinik I, Dresden, Germany
- National Center for Tumor Diseases (NCT), Heidelberg, Partner Site Dresden, Germany
| | - J. Schetelig
- Universitätsklinikum Carl Gustav Carus, Medizinische Klinik und Poliklinik I, Dresden, Germany
| | - G. Ehninger
- Universitätsklinikum Carl Gustav Carus, Medizinische Klinik und Poliklinik I, Dresden, Germany
| | - G. Folprecht
- Universitätsklinikum Carl Gustav Carus, Medizinische Klinik und Poliklinik I, Dresden, Germany
| | - C. Thiede
- Universitätsklinikum Carl Gustav Carus, Medizinische Klinik und Poliklinik I, Dresden, Germany
- Corresponding author: Universitätsklinikum Carl Gustav Carus, Medizinische Klinik und Poliklinik I, Fetscherstraße 74, 01307 Dresden, Germany.
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25
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Mahler V, Aalto-Korte K, Alfonso J, Bakker J, Bauer A, Bensefa-Colas L, Boman A, Bourke J, Bubaš M, Bulat P, Chaloupka J, Constandt L, Danielsen T, Darlenski R, Dugonik A, Ettler K, Gimenez-Arnau A, Gonçalo M, Johansen J, John S, Kiec-Swierczynska M, Koch P, Kohánka V, Krecisz B, Larese Filon F, Ljubojević S, Macan J, Marinović B, Matura M, Mihatsch P, Mijakoski D, Minov J, Pace J, Pesonen M, Ramada Rodilla J, Rast H, Reljic V, Salavastru C, Schuster C, Schuttelaar M, Simon D, Spiewak R, Jurakic Tončić R, Urbanček S, Valiukevičienė S, Weinert P, Wilkinson M, Uter W. Occupational skin diseases: actual state analysis of patient management pathways in 28 European countries. J Eur Acad Dermatol Venereol 2017; 31 Suppl 4:12-30. [DOI: 10.1111/jdv.14316] [Citation(s) in RCA: 44] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2017] [Accepted: 03/24/2017] [Indexed: 11/27/2022]
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26
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Herold S, Kuhn M, Bonin MV, Stange T, Platzbecker U, Radke J, Lange T, Sockel K, Gutsche K, Schetelig J, Röllig C, Schuster C, Roeder I, Dahl A, Mohr B, Serve H, Brandts C, Ehninger G, Bornhäuser M, Thiede C. Donor cell leukemia: evidence for multiple preleukemic clones and parallel long term clonal evolution in donor and recipient. Leukemia 2017; 31:1637-1640. [PMID: 28348390 DOI: 10.1038/leu.2017.104] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Affiliation(s)
- S Herold
- Medizinische Klinik und Poliklinik I, Universitätsklinikum Carl Gustav Carus der TU Dresden, Dresden, Germany
| | - M Kuhn
- Institut für Medizinische Informatik und Biometrie, TU Dresden, Dresden, Germany
| | - M V Bonin
- Medizinische Klinik und Poliklinik I, Universitätsklinikum Carl Gustav Carus der TU Dresden, Dresden, Germany.,Deutsches Konsortium für Translationale Krebsforschung (DKTK), Dresden, Germany.,Deutsches Krebsforschungszentrum (DKFZ), Heidelberg, Germany
| | - T Stange
- Institut für Medizinische Informatik und Biometrie, TU Dresden, Dresden, Germany
| | - U Platzbecker
- Medizinische Klinik und Poliklinik I, Universitätsklinikum Carl Gustav Carus der TU Dresden, Dresden, Germany
| | - J Radke
- Medizinische Klinik und Poliklinik I, Universitätsklinikum Carl Gustav Carus der TU Dresden, Dresden, Germany
| | - T Lange
- Abteilung Hämatologie, Universitätsklinikum Leipzig AöR, Leipzig, Germany
| | - K Sockel
- Medizinische Klinik und Poliklinik I, Universitätsklinikum Carl Gustav Carus der TU Dresden, Dresden, Germany
| | - K Gutsche
- Klinik für Hämatologie und Onkologie, Städtisches Klinikum Görlitz, Görlitz, Germany
| | - J Schetelig
- Medizinische Klinik und Poliklinik I, Universitätsklinikum Carl Gustav Carus der TU Dresden, Dresden, Germany
| | - C Röllig
- Medizinische Klinik und Poliklinik I, Universitätsklinikum Carl Gustav Carus der TU Dresden, Dresden, Germany
| | - C Schuster
- Medizinische Klinik und Poliklinik I, Universitätsklinikum Carl Gustav Carus der TU Dresden, Dresden, Germany
| | - I Roeder
- Institut für Medizinische Informatik und Biometrie, TU Dresden, Dresden, Germany
| | - A Dahl
- Deep Sequencing Core Facility, Center for Regenerative Medicine, TU Dresden, Dresden, Germany
| | - B Mohr
- Medizinische Klinik und Poliklinik I, Universitätsklinikum Carl Gustav Carus der TU Dresden, Dresden, Germany
| | - H Serve
- Medizinische Klinik II, Klinikum der Johann-Wolfgang-Goethe-Universität, Frankfurt am Main, Germany
| | - C Brandts
- Medizinische Klinik II, Klinikum der Johann-Wolfgang-Goethe-Universität, Frankfurt am Main, Germany
| | - G Ehninger
- Medizinische Klinik und Poliklinik I, Universitätsklinikum Carl Gustav Carus der TU Dresden, Dresden, Germany
| | - M Bornhäuser
- Medizinische Klinik und Poliklinik I, Universitätsklinikum Carl Gustav Carus der TU Dresden, Dresden, Germany
| | - C Thiede
- Medizinische Klinik und Poliklinik I, Universitätsklinikum Carl Gustav Carus der TU Dresden, Dresden, Germany
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28
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Crouchet E, Saad R, Affolter-Zbaraszczuk C, Ogier J, Baumert TF, Schuster C, Meyer F. Composite vector formulation for multiple siRNA delivery as a host targeting antiviral in a cell culture model of hepatitis C virus (HCV) infection. J Mater Chem B 2017; 5:858-865. [PMID: 32263854 PMCID: PMC7613424 DOI: 10.1039/c6tb01718e] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
Abstract
Hepatitis C virus (HCV) infection is a major cause of chronic liver disease and cancer worldwide. RNA interference (RNAi)-based gene therapies have emerged recently as a promising tool to treat chronic viral infections. Indeed, small interfering RNAs (siRNAs) provide an opportunity to target host factors required for the viral life cycle. In this study, we evaluated a novel nanovector-based approach for siRNA delivery in a model of chronically infected hepatic cells. We designed original composite nanoparticles by coating the calcium phosphate core with siRNAs targeting HCV host-factors and pyridylthiourea-grafted polyethyleneimine (πPEI). Using combinations of different siRNAs, we observed an efficient and prolonged decrease of HCV replication. Moreover, we showed that the layer-by-layer technique of coating applied to our nanoparticles triggers a sequential release of siRNAs acting on different steps of the HCV life cycle. Together, our results demonstrate the efficacy of these nanoparticles for siRNA delivery and open new perspectives for antiviral therapies.
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Affiliation(s)
- E. Crouchet
- Inserm
- U1110
- Institut de Recherche sur les Maladies Virales et Hépatiques
- 67000 Strasbourg
- France
| | - R. Saad
- Inserm
- U1110
- Institut de Recherche sur les Maladies Virales et Hépatiques
- 67000 Strasbourg
- France
| | | | - J. Ogier
- Université de Strasbourg
- 67000 Strasbourg
- France
- Inserm
- U1121
| | - T. F. Baumert
- Inserm
- U1110
- Institut de Recherche sur les Maladies Virales et Hépatiques
- 67000 Strasbourg
- France
| | - C. Schuster
- Inserm
- U1110
- Institut de Recherche sur les Maladies Virales et Hépatiques
- 67000 Strasbourg
- France
| | - F. Meyer
- Université de Strasbourg
- 67000 Strasbourg
- France
- Inserm
- U1121
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29
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Schuster C, Elamin M, Hardiman O, Bede P. The segmental diffusivity profile of amyotrophic lateral sclerosis associated white matter degeneration. Eur J Neurol 2016; 23:1361-71. [DOI: 10.1111/ene.13038] [Citation(s) in RCA: 55] [Impact Index Per Article: 6.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/24/2015] [Accepted: 04/04/2016] [Indexed: 12/19/2022]
Affiliation(s)
- C. Schuster
- Quantitative Neuroimaging Group; Academic Unit of Neurology; Biomedical Sciences Institute; Trinity College Dublin; Dublin Ireland
| | - M. Elamin
- Quantitative Neuroimaging Group; Academic Unit of Neurology; Biomedical Sciences Institute; Trinity College Dublin; Dublin Ireland
| | - O. Hardiman
- Quantitative Neuroimaging Group; Academic Unit of Neurology; Biomedical Sciences Institute; Trinity College Dublin; Dublin Ireland
| | - P. Bede
- Quantitative Neuroimaging Group; Academic Unit of Neurology; Biomedical Sciences Institute; Trinity College Dublin; Dublin Ireland
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Mitteldorf C, Palmedo G, Kutzner H, Kauer F, Prestin M, Schuster C, Hübscher E, Kirsch A, Tronnier M, Kempf W. Diagnostic approach in lymphoplasmacytic plaque. J Eur Acad Dermatol Venereol 2015; 29:2206-15. [PMID: 26370335 DOI: 10.1111/jdv.13213] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/23/2015] [Accepted: 05/21/2015] [Indexed: 12/14/2022]
Abstract
BACKGROUND Lymphoplasmacytic plaque (LPP) is a recently described rare skin disease characterized by a dense dermal lymphohistiocytic infiltrate with polyclonal plasma cells. The clinical picture is distinct with reddish to brownish plaque with a predilection for the lower leg. LPP typically affects children. OBJECTIVE To define clinical and histologic criteria of LPP and to develop a diagnostic flow chart. METHODS We investigated six of our own LPP cases. Immunoglobulin light chains, IgG, IgG4, CD31, CD163 as a histiocytic marker were examined by immunohistochemistry. PCR-based molecular studies were conducted for borrelia sp., mycobacterial and leishmania sp. Moreover, 10 cases, which have been reported in the literature, were checked for the same features. RESULTS We could differentiate three main histological patterns (superficial band-like only, [deep] dermal only and mixed). Acanthosis and interface dermatitis are key features in cases with a superficial band-like or mixed infiltrate. Granulomas and giant cells could be only found in about 30% of the cases. The number of plasma cells was variable accounting for 5-40% of the infiltrate. The number of blood vessels was increased in the majority of the cases. 'Free-floating' collagen bundles surrounded by histiocytes (pseudorosettes) were identified as a new histological feature. An infectious agent could be excluded in all cases. CONCLUSIONS LPP is a long-standing skin disease, which may also occur in adults and in other body regions than the lower leg. Reproducible clinical and histological criteria allow delineating a diagnostic work-up for LPP.
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Affiliation(s)
- C Mitteldorf
- Department of Dermatology, HELIOS Klinikum Hildesheim GmbH, Hildesheim, Germany
| | - G Palmedo
- Dermatopathologie Friedrichshafen Bodensee, Bodensee, Germany
| | - H Kutzner
- Dermatopathologie Friedrichshafen Bodensee, Bodensee, Germany
| | - F Kauer
- Medizinisches Versorgungs-Zentrum Charlottenburg, Berlin, Germany
| | - M Prestin
- Hautzentrum Dr. Martin Kägi, MD, Zürich, Switzerland
| | - C Schuster
- Dermatology Practice, St. Gallen, Switzerland
| | | | - A Kirsch
- Dermatology Unit, Kantonsspital Lucerne, Lucerne, Switzerland
| | - M Tronnier
- Department of Dermatology, HELIOS Klinikum Hildesheim GmbH, Hildesheim, Germany
| | - W Kempf
- Kempf und Pfaltz, Research Unit, Histologische Diagnostik, Zürich, Switzerland
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31
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Berger C, Wegrzyn M, Kasper E, Marx I, Schuster C, Kress W, Korp C, Benecke R, Teipel S, Prudlo J. Effekte task-irrelevanter emotionaler Stimuli auf das Arbeitsgedächtnis von Patienten mit Spinobulbärer Muskelatrophie/SBMA, Typ Kennedy – eine fMRT-Studie. KLIN NEUROPHYSIOL 2014. [DOI: 10.1055/s-0034-1371258] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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32
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Schuster C, Estrella N, Menzel A. Shifting and extension of phenological periods with increasing temperature along elevational transects in southern Bavaria. Plant Biol (Stuttg) 2014; 16:332-344. [PMID: 23957276 DOI: 10.1111/plb.12071] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/16/2013] [Accepted: 06/07/2013] [Indexed: 06/02/2023]
Abstract
The impact of global warming on phenology has been widely studied, and almost consistently advancing spring events have been reported. Especially in alpine regions, an extraordinary rapid warming has been observed in the last decades. However, little is known about phenological phases over the whole vegetation period at high elevations. We observed 12 phenological phases of seven tree species and measured air temperature at 42 sites along four transects of about 1000 m elevational range in the years 2010 and 2011 near Garmisch-Partenkirchen, Germany. Site- and species-specific onset dates for the phenological phases were determined and related to elevation, temperature lapse rates and site-specific temperature sums. Increasing temperatures induced advanced spring and delayed autumn phases, in which both yielded similar magnitudes. Delayed leaf senescence could therefore have been underestimated until now in extending the vegetation period. Not only the vegetation period, but also phenological periods extended with increasing temperature. Moreover, sensitivity to elevation and temperature strongly depends on the specific phenological phase. Differences between species and groups of species (deciduous, evergreen, high elevation) were found in onset dates, phenological response rates and also in the effect of chilling and forcing temperatures. Increased chilling days highly reduced forcing temperature requirements for deciduous trees, but less for evergreen trees. The problem of shifted species associations and phenological mismatches due to species-specific responses to increasing temperature is a recent topic in ecological research. Therefore, we consider our findings from this novel, dense observation network in an alpine area of particular importance to deepen knowledge on phenological responses to climate change.
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Affiliation(s)
- C Schuster
- Chair of Ecoclimatology, Technische Universität München, Freising, Germany
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33
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Schuster C, Eng K, Lehmann I, Schmid L, Kobashi N, Thaler I, Signer S, Verra M, Henneke A, McCaskey M, Kiper D. Evaluating efficacy and user'/INS;s expectations of a virtual reality training system: A multi-centre randomised controlled trial using mixed methods. J Neurol Sci 2013. [DOI: 10.1016/j.jns.2013.07.1929] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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34
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Wondrusch C, Schuster C. A standardised motor imagery introduction program (MIIP) for patients with sensorimotor impairments: Development and evaluation. J Neurol Sci 2013. [DOI: 10.1016/j.jns.2013.07.1956] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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35
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Fiedler S, Irsig R, Tiggesbäumker J, Schuster C, Merschjann C, Rothe N, Lochbrunner S, Vehse M, Seitz H, Klinkenberg ED, Meiwes-Broer KH. Machining of Biocompatible Ceramics with Femtosecond Laser Pulses. BIOMED ENG-BIOMED TE 2013; 58 Suppl 1:/j/bmte.2013.58.issue-s1-C/bmt-2013-4093/bmt-2013-4093.xml. [PMID: 24042670 DOI: 10.1515/bmt-2013-4093] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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36
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Stoller O, de Bruin ED, Schindelholz M, Schuster C, de Bie RA, Hunt KJ. Evaluation of exercise capacity after severe stroke using robotics-assisted treadmill exercise: a proof-of-concept study. Technol Health Care 2013; 21:157-66. [PMID: 23510976 DOI: 10.3233/thc-130730] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
BACKGROUND Robotics-assisted treadmill exercise (RATE) with focus on motor recovery has become popular in early post-stroke rehabilitation but low endurance for exercise is highly prevalent in these individuals. This study aimed to develop an exercise testing method using robotics-assisted treadmill exercise to evaluate aerobic capacity after severe stroke. METHODS Constant load testing (CLT) based on body weight support (BWS) control, and incremental exercise testing (IET) based on guidance force (GF) control were implemented during RATE. Analyses focussed on step change, step response kinetics, and peak performance parameters of oxygen uptake. RESULTS Three subjects with severe motor impairment 16-23 days post-stroke were included. CLT yielded reasonable step change values in oxygen uptake, whereas response kinetics of oxygen uptake showed low goodness of fit. Peak performance parameters were not obtained during IET. CONCLUSION Exercise testing in post-stroke individuals with severe motor impairments using a BWS control strategy for CLT is deemed feasible and safe. Our approach yielded reasonable results regarding cardiovascular performance parameters. IET based on GF control does not provoke peak cardiovascular performance due to uncoordinated walking patterns. GF control needs further development to optimally demand active participation during RATE. The findings warrant further research regarding the evaluation of exercise capacity after severe stroke.
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Affiliation(s)
- O Stoller
- Institute for Rehabilitation and Performance Technology, Division of Mechanical Engineering, Department of Engineering and Information Technology, Bern University of Applied Sciences, Burgdorf, Switzerland.
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Jahn K, Brunner P, Schuster C, Rieger A. P2.118 The Importance of HIV Testing During Pregnancy - a Case Report. Br J Vener Dis 2013. [DOI: 10.1136/sextrans-2013-051184.0382] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
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Schuster C, Willimann M. Reha Rheinfelden vergibt ersten Forschungspreis. physioscience 2013. [DOI: 10.1055/s-0033-1335480] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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Nakath R, Schuster C, Hurtado A. About the change in boiling behaviour of water with coolant additives in PWR. KERNTECHNIK 2013. [DOI: 10.3139/124.110318] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Abstract
Abstract
The present study investigates the effect of boric acid and lithium hydroxide on flow boiling phenomena in pressurized water reactors. The experiments were conducted in a boiling loop with up to 40 bar and 250 °C. The bubble size distribution was determined with a wire-mesh sensor. The results showed no indication that reactor-typical concentrations of boric acid or lithium hydroxide have a safety-relevant influence on the boiling behavior in pressurized water reactors.
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Affiliation(s)
- R. Nakath
- Dipl.-Ing. Richard Nakath,
- Technische Universität Dresden, Institut für Energietechnik, Professur für Wasserstoff- und Kernenergietechnik, George-Bähr Str. 3b, 01069 Dresden
| | - C. Schuster
- Dr.-Ing. Christoph Schuster,
- Technische Universität Dresden, Institut für Energietechnik, Professur für Wasserstoff- und Kernenergietechnik, George-Bähr Str. 3b, 01069 Dresden
| | - A. Hurtado
- Prof. Dr.-Ing. Habil. Antonio Hurtado,
- Technische Universität Dresden, Institut für Energietechnik, Professur für Wasserstoff- und Kernenergietechnik, George-Bähr Str. 3b, 01069 Dresden
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Trippolini M, Schuster C, Henneke A, Verra M. 7. Clinical Research Forum in der Reha Rheinfelden, Schweiz. physioscience 2013. [DOI: 10.1055/s-0032-1330683] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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Schuster C, Merschjann C, Rothe N, Fiedler S, Irsig R, Meiwes-Broer KH, Vehse M, Seitz H, Senz V, Sternberg K, Lochbrunner S. Machining of Biocompatible Polymers with Shaped Femtosecond Laser Pulses. BIOMED ENG-BIOMED TE 2013; 58 Suppl 1:/j/bmte.2013.58.issue-s1-C/bmt-2013-4085/bmt-2013-4085.xml. [DOI: 10.1515/bmt-2013-4085] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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Leclerque A, Kleespies R, Schuster C, Richards N, Marshall S, Jackson T. Multilocus sequence analysis (MLSA) of ‘Rickettsiella costelytrae' and ‘Rickettsiella pyronotae’, intracellular bacterial entomopathogens from New Zealand. J Appl Microbiol 2012; 113:1228-37. [DOI: 10.1111/j.1365-2672.2012.05419.x] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/05/2012] [Revised: 07/12/2012] [Accepted: 07/28/2012] [Indexed: 11/30/2022]
Affiliation(s)
- A. Leclerque
- Julius Kühn-Institute (JKI) - Federal Research Centre for Cultivated Plants; Institute for Biological Control; Darmstadt; Germany
| | - R.G. Kleespies
- Julius Kühn-Institute (JKI) - Federal Research Centre for Cultivated Plants; Institute for Biological Control; Darmstadt; Germany
| | - C. Schuster
- Julius Kühn-Institute (JKI) - Federal Research Centre for Cultivated Plants; Institute for Biological Control; Darmstadt; Germany
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Schuster C, Iglesias-Lebrija JJ, Carrascal LM. Tendencias poblacionales recientes de la avutarda hubara en las Islas Canarias: análisis metodológico y estado de conservación. Anim Biodiv Conserv 2012. [DOI: 10.32800/abc.2012.35.0125] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
Recent population trends of the houbara bustard in the Canary Islands. Methods and conservation status Determining conservation status requires rigorous and reliable data about population sizes and trends, especially if they have to be applied to islands where the species have small populations. The Canary bustard houbara (Chlamydotis undulata fuertaventurae) is catalogued as ‘in danger’ by the Red Book of the Birds of Spain. This work analyzes the value of previously published information on the species using the method of adjacent linear transects separated by 200 m, as a baseline for establishing robust population trends in 30 important areas (ranging from 1.3 to 12.8 km2) for the houbara in the islands of Lanzarote and Fuerteventura (Canary Islands). Censuses were repeated on the same dates (from November to December) and localities as those carried out in 1994, 2004 and 2006. The detection probability of the houbara was estimated by means of distance sampling, being 0.42 up to 250 m from the observer, and 0.82 in the main census belt of 100 m on either side of the line transect. The method of adjacent linear transects —counting the maximum number of hubaras detected— provides accurate figures of population densities (detection of 95.2% of the birds). The previous estimations of houbara densities can therefore be considered highly trustworthy, with a probable average underestimation of only 5 %. Nevertheless, the confidence intervals of density estimations using only one census were very large. Therefore, with only one census per sampling area and year it is not possible to obtain precise estimates of houbara densities with small variation around the average value. This raises concern when trying to obtain solid evidence about the increases–decreases of houbara populations comparing different dates or study areas. The density of the Canary Island hubara bustard decreased significantly from 2004/2006 to 2011 in eight areas of Fuerteventura (Vega Vieja, Los Alares–Pocetas, Matas Blancas, Lorenzo– Diviso, Corralejo, Lajares and Fimapaire) and in two areas of Lanzarote (Argana and La Santa). Conversely, the density of the houbara significantly increased in three areas of Lanzarote (Zonzamas, Guatiza and Llano de las Maretas). As a whole, average population density did not differ significantly between 2004/2006 and 2011 in Fuerteventura (slight decrease of 29% in 2011), but there was a significant increase in Lanzarote (increase of 60% from 2004/2006 to 2011). The change in density from 2004/2006 to 2011 tended to be an increase in areas further from paved roads, and a decrease in locations predominantly covered by loose sandy soils.
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Payer BA, Reiberger T, Breitenecker F, Aichelburg MC, Schuster C, Heil PM, Scherzer TM, Ferenci P, Rieger A, Peck-Radosavljevic M. The risk of infections in HIV-HCV coinfected patients during antiviral therapy with pegIFN+RBV. J Infect 2012; 65:142-9. [PMID: 22410384 DOI: 10.1016/j.jinf.2012.02.014] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2011] [Revised: 02/10/2012] [Accepted: 02/13/2012] [Indexed: 11/18/2022]
Abstract
OBJECTIVES Antiviral treatment with pegIFN/RBV decreases ANC and CD4+ cell count. An association between neutropenia, a low CD4+ cell count and infections has not been demonstrated so far in HIV-HCV coinfected patients. METHODS The incidence, type, and severity of infections were recorded in 85 HIV-HCV coinfected and 164 monoinfected patients receiving pegIFN/RBV for 48 weeks. ANC and CD4+ cell count were assessed every 4 weeks during therapy. RESULTS The incidence of infections was significantly higher in HIV-HCV than HCV-Mono (38% vs. 15%; p = 0.001). Types of infections: pneumonia (n = 16/n = 24), bacteraemia/sepsis (n = 5/n = 2), skin infections (n = 15/n = 12), urinary tract infections (n = 4/n = 1), OIs (n = 10/n = 1). The incidence of neutropenia grade 1, 2 3 or 4 was similar in HIV-HCV and HCV-Mono, respectively. The incidence of infections was not associated with neutropenia (HCV-Mono: p = 0.584; HIV-HCV: p = 0.23) or with CD4+ cell counts <200/μL (HIV-HCV: p = 0.29). OIs occurred more often in HIV-HCV patients with CD4+ cell count <200/μL (p = 0.024). CONCLUSIONS Up to 38% and 15% of HIV-HCV coinfected and HCV-monoinfected patients develop infections during pegIFN+RBV therapy but without any correlation to neutropenia. Antibacterial prophylaxis/treatment should be considered early in HIV-HCV coinfected patients developing CD4+ cell counts <200/μL during antiviral therapy as these patients have an increased risk of OIs.
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Affiliation(s)
- B A Payer
- Medical University of Vienna, Dept. of Internal Medicine III, Div. of Gastroenterology & Hepatology, Austria
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Davidenko N, Gibb T, Schuster C, Best SM, Campbell JJ, Watson CJ, Cameron RE. Biomimetic collagen scaffolds with anisotropic pore architecture. Acta Biomater 2012; 8:667-76. [PMID: 22005330 DOI: 10.1016/j.actbio.2011.09.033] [Citation(s) in RCA: 90] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/23/2011] [Revised: 09/12/2011] [Accepted: 09/26/2011] [Indexed: 01/21/2023]
Abstract
Sponge-like matrices with a specific three-dimensional structural design resembling the actual extracellular matrix of a particular tissue show significant potential for the regeneration and repair of a broad range of damaged anisotropic tissues. The manipulation of the structure of collagen scaffolds using a freeze-drying technique was explored in this work as an intrinsically biocompatible way of tailoring the inner architecture of the scaffold. The research focused on the influence of temperature gradients, imposed during the phase of crystallisation of collagen suspensions, upon the degree of anisotropy in the microstructures of the scaffolds produced. Moulding technology was employed to achieve differences in heat transfer rates during the freezing processes. For this purpose various moulds with different configurations were developed with a view to producing uniaxial and multi-directional temperature gradients across the sample during this process. Scanning electron microscopy analysis of different cross-sections (longitudinal and horizontal) of scaffolds revealed that highly aligned matrices with axially directed pore architectures were obtained where single unidirectional temperature gradients were induced. Altering the freezing conditions by the introduction of multiple temperature gradients allowed collagen scaffolds to be produced with complex pore orientations, and anisotropy in pore size and alignment.
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Affiliation(s)
- N Davidenko
- Department of Materials Science and Metallurgy, University of Cambridge, Pembroke Street, Cambridge CB2 3QZ, UK.
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Schuster C, Klimke J, Schwingenschlögl U. High energy transmission of Al 2O 3 doped with light transition metals. J Chem Phys 2012; 136:044522. [DOI: 10.1063/1.3679746] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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Schuster C, Rothe N, Svanidze AV, Fiedler S, Irsig R, Tiggesbäumker J, Senz V, Vehse M, Seitz H, Lochbrunner S. Material processing with shaped femtosecond laser pulses. BIOMED ENG-BIOMED TE 2012. [DOI: 10.1515/bmt-2012-4037] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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Sieber W, Bernkopf K, Bauer A, Brenner M, Walker A, Liptak J, Przybilla B, Eben R, Ruëff F, Koschel D, Schmies M, Höffken G, Balck F, Sturm GJ, Kranzelbinder B, Schuster C, Bokanovic D, Sturm E, Vollmann J, Griesbacher A, Crailsheim K, Aberer W, Laipold K. Langfristige Patientenversorgung. Allergo J 2011. [DOI: 10.1007/bf03362490] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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Bennouna-Greene V, Kremer S, Stoetzel C, Christmann D, Schuster C, Durand M, Verloes A, Sigaudy S, Holder-Espinasse M, Godet J, Brandt C, Marion V, Danion A, Dietemann JL, Dollfus H. Hippocampal dysgenesis and variable neuropsychiatric phenotypes in patients with Bardet-Biedl syndrome underline complex CNS impact of primary cilia. Clin Genet 2011; 80:523-31. [PMID: 21517826 DOI: 10.1111/j.1399-0004.2011.01688.x] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Abstract
The Bardet-Biedl syndrome (BBS) is a rare ciliopathy clinically defined by the association of retinitis pigmentosa, polydactyly, obesity, kidney disease and cognitive impairment. The cognitive functioning, behavioral phenotype, prevalence of psychiatric diseases and memory performances of a cohort of 34 patients with BBS were evaluated and a systemic brain magnetic resonance imaging (MRI) was performed. The patients' cognitive functioning was of marked variable efficiency ranging from normal to disabling performances. Neuropsychological disorders such as slow thought process, attention difficulties and obsessive-compulsive traits were observed. Our main finding was hippocampal dysgenesis, diagnosed by MRI, found in 42.31% of the patients in this cohort. Moreover, we show that BBS proteins are expressed in the human hippocampus and in the human brain in the normal subject. Recent literature in the murine model shows that hippocampal neurogenesis, in particular in the adult mouse, requires an intact primary cilia. These results encourage us to further investigate the possible role of BBS proteins in the hippocampus and related central nervous system structures.
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Affiliation(s)
- V Bennouna-Greene
- Laboratoire de Génétique Médicale, Equipe Avenir-INSERM EA3949, Université de Strasbourg, F67085, France.
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