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  1. AU="Petrenko, Andrei"
  2. AU=Valentino Kristin
  3. AU=Swash M
  4. AU="Adedipe, Ifeoluwa"
  5. AU=Shen Hongcheng
  6. AU="Padhy, Biswajit"
  7. AU="Kruglikov, Alibek"
  8. AU="Tasu, Jean Pierre"
  9. AU="Floate, Kevin D"
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  1. Artikel ; Online: Significant reduction in the incidence of non-coronavirus infections in patients with chronic lymphocytic leukemia on ibrutinib and venetoclax treatment during the COVID-19 pandemic: An additional benefit of lockdown.

    Kislova, Maria / Petrenko, Andrei / Dmitrieva, Elena A / Milenkin, Alexander / Nikitin, Konstantin E / Ptushkin, Vadim V / Shabunin, Alexey V / Nikitin, Eugene A

    Hematological oncology

    2023  Band 41, Heft 4, Seite(n) 683–693

    Abstract: Effective treatment and prevention of infections challenge management of patients with chronic lymphicytic leukemia (CLL). The COVID-19 pandemic resulted in the reduction of outpatient hospital visits as a part of non-pharmaceutical interventions that ... ...

    Abstract Effective treatment and prevention of infections challenge management of patients with chronic lymphicytic leukemia (CLL). The COVID-19 pandemic resulted in the reduction of outpatient hospital visits as a part of non-pharmaceutical interventions that could affect the incidence of infectious complications. Study enrolled patients with CLL receiving ibrutinib or/and venetoclax who were observed at the Moscow City Centre of Hematology from 01 April 2017 to 31 March 2021. We found a reduction in the incidence of infectious episodes after the implementation of the lockdown in Moscow in 01 April 2020, when compared to data on the year prior to the lockdown (p < 0.0001), as well as when compared to the predictive model (p = 0.02), and based on individual infection profiles using cumulative sums (p < 0.0001). Bacterial infections had 4.44-fold decrease, bacterial in combination with undefined infections had 4.89-fold decrease, viral infections had unsignificant changes. The decrease in the number of outpatient visits coincides with the time of the lockdown could be a likely factor, explaining a decline in the incidence of infection. Patients were clustered according incidence and severity of infectious episodes for subgroup mortality assessment. No differences in overall survival due to COVID-19 were observed. Typical respiratory infections, bacterial and undefined, the transmission of which may be affected by patient-to-patient contact in the settings of out-patient health care visits were decreased, possibly due to SARS-CoV-2 restrictive measures. A positive correlation between outpatient visits and the incidence of bronchial and upper respiratory tract infection points at the role of hospital-acquired infection and attests to the necessity of reorganizing care for all patients with CLL.
    Sprache Englisch
    Erscheinungsdatum 2023-04-14
    Erscheinungsland England
    Dokumenttyp Journal Article
    ZDB-ID 604884-5
    ISSN 1099-1069 ; 0278-0232
    ISSN (online) 1099-1069
    ISSN 0278-0232
    DOI 10.1002/hon.3156
    Datenquelle MEDical Literature Analysis and Retrieval System OnLINE

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  2. Buch ; Online: Advancing Hybrid Quantum-Classical Computation with Real-Time Execution

    Lubinski, Thomas / Granade, Cassandra / Anderson, Amos / Geller, Alan / Roetteler, Martin / Petrenko, Andrei / Heim, Bettina

    2022  

    Abstract: The use of mid-circuit measurement and qubit reset within quantum programs has been introduced recently and several applications demonstrated that perform conditional branching based on these measurements. In this work, we go a step further and describe ... ...

    Abstract The use of mid-circuit measurement and qubit reset within quantum programs has been introduced recently and several applications demonstrated that perform conditional branching based on these measurements. In this work, we go a step further and describe a next-generation implementation of classical computation embedded within quantum programs that enables the real-time calculation and adjustment of program variables based on the mid-circuit state of measured qubits. A full-featured Quantum Intermediate Representation (QIR) model is used to describe the quantum circuit including its embedded classical computation. This integrated approach eliminates the need to evaluate and store a potentially prohibitive volume of classical data within the quantum program in order to explore multiple solution paths. It enables a new type of quantum algorithm that requires fewer round-trips between an external classical driver program and the execution of the quantum program, significantly reducing computational latency, as much of the classical computation can be performed during the coherence time of quantum program execution. We review practical challenges to implementing this approach along with developments underway to address these challenges. An implementation of this novel and powerful quantum programming pattern, a random walk phase estimation algorithm, is demonstrated on a physical quantum computer with an analysis of its benefits and feasibility as compared to existing quantum computing methods.

    Comment: 13 pages, 5 figures
    Schlagwörter Quantum Physics ; Computer Science - Emerging Technologies
    Thema/Rubrik (Code) 005
    Erscheinungsdatum 2022-06-26
    Erscheinungsland us
    Dokumenttyp Buch ; Online
    Datenquelle BASE - Bielefeld Academic Search Engine (Lebenswissenschaftliche Auswahl)

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  3. Artikel ; Online: COVID-19 in patients with chronic lymphocytic leukemia: a Moscow observational study.

    Kochneva, Оlga L / Kislova, Maria / Zhelnova, Evgenya I / Petrenko, Andrei A / Baryakh, Elena A / Yatskov, Konstantin V / Dmitrieva, Elena A / Misurina, Elena N / Nikitin, Konstantin E / Vasilieva, Elena J / Samsonova, Inna V / Ptushkin, Vadim V / Baranova, Ancha / Nikitin, Eugene A

    Leukemia & lymphoma

    2022  Band 63, Heft 7, Seite(n) 1607–1616

    Abstract: We describe a retrospective cohort, 156 patients with chronic lymphocytic leukemia (CLL) diagnosed with COVID-19, analyze factors associated with a severe disease course and the effects of various treatment regimens. Anti-SARS-CoV-2 IgG and IgM levels ... ...

    Abstract We describe a retrospective cohort, 156 patients with chronic lymphocytic leukemia (CLL) diagnosed with COVID-19, analyze factors associated with a severe disease course and the effects of various treatment regimens. Anti-SARS-CoV-2 IgG and IgM levels are significantly lower. Patients with CLL are more likely to have a severe course of COVID-19, with IL-6 levels acting as a consistent biomarker of disease severity. Ten patients had recurrent episodes, fatality rate of 20%. Overall survival did not differ between patients receiving ibrutinib monotherapy and anti-CD20 antibodies ± chemotherapy. It seems that the immunodeficiency inherent to CLL influences outcomes to a larger degree than does the treatment. Glucocorticoids are not associated with significant OS improvement whereas anti-cytokine compounds usage seemed to be beneficial in patients with mild pulmonary involvement. Our data attest to the necessity of reorganizing health care for patients with CLL. Early administration of effective antiviral compounds and tailored vaccination protocols are warranted.
    Mesh-Begriff(e) COVID-19/epidemiology ; Humans ; Leukemia, Lymphocytic, Chronic, B-Cell/diagnosis ; Leukemia, Lymphocytic, Chronic, B-Cell/drug therapy ; Leukemia, Lymphocytic, Chronic, B-Cell/epidemiology ; Moscow ; Retrospective Studies
    Sprache Englisch
    Erscheinungsdatum 2022-02-13
    Erscheinungsland United States
    Dokumenttyp Journal Article ; Observational Study
    ZDB-ID 1042374-6
    ISSN 1029-2403 ; 1042-8194
    ISSN (online) 1029-2403
    ISSN 1042-8194
    DOI 10.1080/10428194.2022.2034157
    Datenquelle MEDical Literature Analysis and Retrieval System OnLINE

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  4. Artikel ; Online: Clinical Outcomes in Patients With COVID-19 and Hematologic Disease.

    Aleshina, Olga A / Zakurdaeva, Kristina / Vasileva, Anastasia N / Dubov, Sergey K / Dubov, Vitaly S / Vorobyev, Vladimir I / Butaev, Lev S / Sukhareva, Alena M / Gavrilova, Lubov V / Toropova, Inessa Yu / Popova, Marina O / Siniaev, Aleksandr A / Kulagin, Aleksandr D / Kaplanov, Kamil D / Petrenko, Andrei A / Ochirova, Oksana I / Karpova, Alina / Chelysheva, Ekaterina Yu / Turkina, Anna G /
    Gurianova, Margarita A / Al-Radi, Liubov S / Gilyazitdinova, Elena A / Egorova, Elena K / Chabaeva, Yulia A / Kulikov, Sergey M / Sveshnikova, Yulia V / Kunst, Mikhail A / Shuvaev, Vasily / Rakhmani, Anzhelika F / Panteleeva, Olga L / Grishunina, Maria E / Samoylova, Olga S / Vorontsova, Ekaterina / Baryshnikova, Daria V / Parovichnikova, Elena N

    Clinical lymphoma, myeloma & leukemia

    2023  Band 23, Heft 8, Seite(n) 589–598

    Abstract: Background: Patients with hematologic diseases are at higher risk of the SARS-CoV-2 infection and more severe clinical outcomes of the coronavirus disease. CHRONOS19 is an observational prospective cohort study with the aim to determine the short and ... ...

    Abstract Background: Patients with hematologic diseases are at higher risk of the SARS-CoV-2 infection and more severe clinical outcomes of the coronavirus disease. CHRONOS19 is an observational prospective cohort study with the aim to determine the short and longer-term clinical outcomes, risk factors for disease severity and mortality, and rates of postinfectious immunity in patients with malignant and nonmalignant hematologic diseases and COVID-19.
    Patients and methods: Overall, 666 patients were enrolled in the study, of which 626 were included in the final data analysis. The primary endpoint was 30-days all-cause mortality. Secondary endpoints included COVID-19 complications, rates of ICU admission and mechanical ventilation, outcomes of a hematologic disease in SARS-CoV-2 infected patients, overall survival, and risk factors for disease severity and mortality. Data from 15 centers were collected at 30, 90, and 180 days after COVID-19 was diagnosed and were managed using a web-based e-data capture platform. All evaluations were performed in the pre-omicron period of COVID-19 pandemic.
    Results: Thirty-days all-cause mortality was 18.9%. The predominant cause of death (in 80% of cases) were COVID-19 complications. At 180 days, the majority (70%) of additional deaths were due to hematologic disease progression. At a median follow-up of 5.7 [0.03-19.04] months, 6-months overall survival was 72% [95% CI: 0.69-0.76]. One-third of patients had severe SARS-CoV-2 disease. The rate of ICU admission was 22% with 77% of these patients requiring mechanical ventilation, with poor survival rate. A univariate analysis revealed that older age (≥ 60 years), male sex, malignant hematologic disease, myelotoxic agranulocytosis, transfusion dependence, refractory disease or relapse, diabetes among comorbidities, any complications, especially ARDS alone or in combination with CRS, admission to an ICU, and mechanical ventilation were associated with higher risks of mortality. Treatment of the hematologic disease was changed, postponed, or canceled in 63% of patients. At a longer follow-up (90 and 180 days), the status of the hematologic disease changed in 7.5% of patients.
    Conclusion: Patients with hematologic disease and COVID-19 have high mortality rates, predominantly due to COVID-19 complications. At a longer-term follow-up, no significant impact of COVID-19 on the course of a hematologic disease was revealed.
    Mesh-Begriff(e) Humans ; Male ; COVID-19/complications ; Hematologic Diseases/etiology ; Pandemics ; Prospective Studies ; SARS-CoV-2 ; Female ; Middle Aged ; Aged
    Sprache Englisch
    Erscheinungsdatum 2023-04-14
    Erscheinungsland United States
    Dokumenttyp Journal Article ; Observational Study ; Research Support, Non-U.S. Gov't
    ZDB-ID 2540992-X
    ISSN 2152-2669 ; 2152-2650
    ISSN (online) 2152-2669
    ISSN 2152-2650
    DOI 10.1016/j.clml.2023.04.002
    Datenquelle MEDical Literature Analysis and Retrieval System OnLINE

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  5. Artikel ; Online: Extending the lifetime of a quantum bit with error correction in superconducting circuits.

    Ofek, Nissim / Petrenko, Andrei / Heeres, Reinier / Reinhold, Philip / Leghtas, Zaki / Vlastakis, Brian / Liu, Yehan / Frunzio, Luigi / Girvin, S M / Jiang, L / Mirrahimi, Mazyar / Devoret, M H / Schoelkopf, R J

    Nature

    2016  Band 536, Heft 7617, Seite(n) 441–445

    Abstract: Quantum error correction (QEC) can overcome the errors experienced by qubits and is therefore an essential component of a future quantum computer. To implement QEC, a qubit is redundantly encoded in a higher-dimensional space using quantum states with ... ...

    Abstract Quantum error correction (QEC) can overcome the errors experienced by qubits and is therefore an essential component of a future quantum computer. To implement QEC, a qubit is redundantly encoded in a higher-dimensional space using quantum states with carefully tailored symmetry properties. Projective measurements of these parity-type observables provide error syndrome information, with which errors can be corrected via simple operations. The 'break-even' point of QEC--at which the lifetime of a qubit exceeds the lifetime of the constituents of the system--has so far remained out of reach. Although previous works have demonstrated elements of QEC, they primarily illustrate the signatures or scaling properties of QEC codes rather than test the capacity of the system to preserve a qubit over time. Here we demonstrate a QEC system that reaches the break-even point by suppressing the natural errors due to energy loss for a qubit logically encoded in superpositions of Schrödinger-cat states of a superconducting resonator. We implement a full QEC protocol by using real-time feedback to encode, monitor naturally occurring errors, decode and correct. As measured by full process tomography, without any post-selection, the corrected qubit lifetime is 320 microseconds, which is longer than the lifetime of any of the parts of the system: 20 times longer than the lifetime of the transmon, about 2.2 times longer than the lifetime of an uncorrected logical encoding and about 1.1 longer than the lifetime of the best physical qubit (the |0〉f and |1〉f Fock states of the resonator). Our results illustrate the benefit of using hardware-efficient qubit encodings rather than traditional QEC schemes. Furthermore, they advance the field of experimental error correction from confirming basic concepts to exploring the metrics that drive system performance and the challenges in realizing a fault-tolerant system.
    Sprache Englisch
    Erscheinungsdatum 2016--25
    Erscheinungsland England
    Dokumenttyp Journal Article ; Research Support, Non-U.S. Gov't ; Research Support, U.S. Gov't, Non-P.H.S.
    ZDB-ID 120714-3
    ISSN 1476-4687 ; 0028-0836
    ISSN (online) 1476-4687
    ISSN 0028-0836
    DOI 10.1038/nature18949
    Datenquelle MEDical Literature Analysis and Retrieval System OnLINE

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  6. Artikel ; Online: Characterizing entanglement of an artificial atom and a cavity cat state with Bell's inequality.

    Vlastakis, Brian / Petrenko, Andrei / Ofek, Nissim / Sun, Luyan / Leghtas, Zaki / Sliwa, Katrina / Liu, Yehan / Hatridge, Michael / Blumoff, Jacob / Frunzio, Luigi / Mirrahimi, Mazyar / Jiang, Liang / Devoret, M H / Schoelkopf, R J

    Nature communications

    2015  Band 6, Seite(n) 8970

    Abstract: The Schrodinger's cat thought experiment highlights the counterintuitive concept of entanglement in macroscopically distinguishable systems. The hallmark of entanglement is the detection of strong correlations between systems, most starkly demonstrated ... ...

    Abstract The Schrodinger's cat thought experiment highlights the counterintuitive concept of entanglement in macroscopically distinguishable systems. The hallmark of entanglement is the detection of strong correlations between systems, most starkly demonstrated by the violation of a Bell inequality. No violation of a Bell inequality has been observed for a system entangled with a superposition of coherent states, known as a cat state. Here we use the Clauser-Horne-Shimony-Holt formulation of a Bell test to characterize entanglement between an artificial atom and a cat state, or a Bell-cat. Using superconducting circuits with high-fidelity measurements and real-time feedback, we detect correlations that surpass the classical maximum of the Bell inequality. We investigate the influence of decoherence with states up to 16 photons in size and characterize the system by introducing joint Wigner tomography. Such techniques demonstrate that information stored in superpositions of coherent states can be extracted efficiently, a crucial requirement for quantum computing with resonators.
    Sprache Englisch
    Erscheinungsdatum 2015-11-27
    Erscheinungsland England
    Dokumenttyp Journal Article ; Research Support, Non-U.S. Gov't ; Research Support, U.S. Gov't, Non-P.H.S.
    ISSN 2041-1723
    ISSN (online) 2041-1723
    DOI 10.1038/ncomms9970
    Datenquelle MEDical Literature Analysis and Retrieval System OnLINE

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  7. Artikel: Unaltered pain-related behavior in mice lacking NMDA receptor GluRepsilon 1 subunit.

    Petrenko, Andrei B / Yamakura, Tomohiro / Baba, Hiroshi / Sakimura, Kenji

    Neuroscience research

    2003  Band 46, Heft 2, Seite(n) 199–204

    Abstract: Noxious afferent input following tissue damage and inflammation triggers a state of neuronal hyperexcitability-a phenomenon of central sensitization-which manifests behaviorally as allodynia and hyperalgesia. At the molecular level, maintenance of ... ...

    Abstract Noxious afferent input following tissue damage and inflammation triggers a state of neuronal hyperexcitability-a phenomenon of central sensitization-which manifests behaviorally as allodynia and hyperalgesia. At the molecular level, maintenance of central sensitization is largely dependent on the N-methyl-D-aspartate receptor (NMDAR) activation. NMDARs are composed of GluRzeta1 (NR1) and one of four GluRepsilon (NR2) subunits, which determine the functional properties of native NMDARs. Although there is accumulating evidence to implicate GluRepsilon 2-containing NMDARs in pain mechanisms, the functional significance of GluRepsilon 1-containing NMDARs in this setting has not been examined in detail. Here, we used hind paw injection of formalin, complete Freund's adjuvant and a nerve injury model to investigate the effects of GluRepsilon 1 subunit gene deletion on pain-related behavior in mice. In all of the models tested, GluRepsilon 1-deficient mice exhibited responses similar to wild-type controls. These results suggest that GluRepsilon 1 disruption does not result in altered nociceptive behavior in mice. Although the contribution of other nociceptive pathways cannot be ruled out, we speculate that the preserved function of GluRepsilon 2-containing NMDARs could explain unaltered nociceptive behavior in mutant mice.
    Mesh-Begriff(e) Animals ; Axotomy ; Behavior, Animal/physiology ; Blotting, Western ; Formaldehyde/pharmacology ; Freund's Adjuvant/pharmacology ; Hindlimb/drug effects ; Hindlimb/innervation ; Hindlimb/physiology ; Irritants/pharmacology ; Male ; Mice ; Mice, Knockout ; Nociceptors/metabolism ; Pain/genetics ; Pain/metabolism ; Pain Measurement ; Pain Threshold/physiology ; Physical Stimulation ; Reaction Time/genetics ; Receptors, N-Methyl-D-Aspartate/deficiency ; Receptors, N-Methyl-D-Aspartate/genetics ; Receptors, N-Methyl-D-Aspartate/metabolism
    Chemische Substanzen Irritants ; NR2A NMDA receptor ; NR2B NMDA receptor ; Receptors, N-Methyl-D-Aspartate ; Formaldehyde (1HG84L3525) ; Freund's Adjuvant (9007-81-2)
    Sprache Englisch
    Erscheinungsdatum 2003-04-28
    Erscheinungsland Ireland
    Dokumenttyp Journal Article ; Research Support, Non-U.S. Gov't
    ZDB-ID 605842-5
    ISSN 1872-8111 ; 0168-0102 ; 0921-8696
    ISSN (online) 1872-8111
    ISSN 0168-0102 ; 0921-8696
    DOI 10.1016/s0168-0102(03)00061-0
    Datenquelle MEDical Literature Analysis and Retrieval System OnLINE

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  8. Artikel: The role of N-methyl-D-aspartate (NMDA) receptors in pain: a review.

    Petrenko, Andrei B / Yamakura, Tomohiro / Baba, Hiroshi / Shimoji, Koki

    Anesthesia and analgesia

    2001  Band 97, Heft 4, Seite(n) 1108–1116

    Abstract: There is accumulating evidence to implicate the importance of N-methyl-D-aspartate (NMDA) receptors to the induction and maintenance of central sensitization during pain states. However, NMDA receptors may also mediate peripheral sensitization and ... ...

    Abstract There is accumulating evidence to implicate the importance of N-methyl-D-aspartate (NMDA) receptors to the induction and maintenance of central sensitization during pain states. However, NMDA receptors may also mediate peripheral sensitization and visceral pain. NMDA receptors are composed of NR1, NR2 (A, B, C, and D), and NR3 (A and B) subunits, which determine the functional properties of native NMDA receptors. Among NMDA receptor subtypes, the NR2B subunit-containing receptors appear particularly important for nociception, thus leading to the possibility that NR2B-selective antagonists may be useful in the treatment of chronic pain.
    Mesh-Begriff(e) Animals ; Central Nervous System/drug effects ; Chronic Disease ; Excitatory Amino Acid Agonists/administration & dosage ; Excitatory Amino Acid Agonists/pharmacology ; Humans ; Pain/physiopathology ; Peripheral Nervous System/drug effects ; Receptors, N-Methyl-D-Aspartate/drug effects ; Receptors, N-Methyl-D-Aspartate/metabolism ; Receptors, N-Methyl-D-Aspartate/physiology
    Chemische Substanzen Excitatory Amino Acid Agonists ; Receptors, N-Methyl-D-Aspartate
    Sprache Englisch
    Erscheinungsdatum 2001-06-08
    Erscheinungsland United States
    Dokumenttyp Journal Article ; Review
    ZDB-ID 80032-6
    ISSN 1526-7598 ; 0003-2999
    ISSN (online) 1526-7598
    ISSN 0003-2999
    DOI 10.1213/01.ANE.0000081061.12235.55
    Datenquelle MEDical Literature Analysis and Retrieval System OnLINE

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