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Nguyen NAT, Auquier P, Beltran Anzola A, Harroche A, Huguenin Y, Hochart A, Meunier S, Frotscher B, Nguyen P, Schneider P, Berger C, Lebreton A, Vanderbecken S, De Raucourt E, D'Oiron R, Oudot-Challard C, Baumstarck K, Boucekine M, Tabélé C, Rosso-Delsemme N, Sannié T, Giraud N, Chambost H, Resseguier N. Quality of life of siblings of adolescents with severe haemophilia (FRATHEMO): An ancillary study to the TRANSHEMO project. Haemophilia 2024; 30:1071-1076. [PMID: 38684456 DOI: 10.1111/hae.15023] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/18/2023] [Revised: 04/11/2024] [Accepted: 04/11/2024] [Indexed: 05/02/2024]
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Tardy-Poncet B, Montmartin A, Chambost H, Lienhart A, Frotscher B, Morange PE, Falaise C, Collange F, Dargaud Y, Toussaint-Hacquard M, Ardillon L, Wibaut B, Jeanpierre E, Nguyen P, Volot F, Tardy B. Relationship between plasma tissue Factor Pathway Inhibitor (TFPI) levels, thrombin generation and clinical risk of bleeding in patients with severe haemophilia A or B. Haemophilia 2024; 30:693-701. [PMID: 38650319 DOI: 10.1111/hae.15020] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2023] [Revised: 04/05/2024] [Accepted: 04/07/2024] [Indexed: 04/25/2024]
Abstract
INTRODUCTION Bleeding severity in severe haemophilic patients, with low thrombin generation (TG) capacity, can vary widely between patients, possibly reflecting differences in tissue factor pathway inhibitor (TFPI) level. AIM To compare free TFPI (fTFPI) levels in patients with severe haemophilia A (sHA) and severe haemophilia B (sHB) and to investigate in these patients as a whole the relationships between bleeding and TG potential, between TG potential and fTFPI level and between fTFPI level and bleeding tendency. METHODS Data on bleeding episodes retrospectively recorded during follow-up visits over 5-10 years were collected and used to calculate the annualised joint bleeding rate (AJBR). fTFPI levels and basal TG parameters were determined in platelet-poor plasma (PPP) and platelet-rich plasma (PRP) using calibrated automated tomography (CAT). RESULTS Mean fTFPI levels did not differ significantly between sHA (n = 34) and sHB (n = 19) patients. Mean values of endogenous thrombin potential (ETP) and thrombin peak (peak) in PPP and PRP were two-fold higher when fTFPI levels < 9.4 versus > 14.3 ng/mL. In patients treated on demand, ETP and peak in PRP were doubled when AJBR was≤ 4.9 $ \le 4.9$ , AJBR being halved in patients with a low fTFPI level (9.4 ng/mL). In patients on factor prophylaxis, no association was found between TG parameters and either fTFPI level or AJBR. CONCLUSION In patients treated on demand, bleeding tendency was influenced by fTFPI levels, which in turn affected basal TG potential. In patients on prophylaxis, bleeding tendency is probably determined primarily by the intensity of this treatment.
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Nguyen P, Sooriyaarachchi J, Huang Q, Baker CL. Estimating receptive fields of simple and complex cells in early visual cortex: A convolutional neural network model with parameterized rectification. PLoS Comput Biol 2024; 20:e1012127. [PMID: 38820562 PMCID: PMC11168683 DOI: 10.1371/journal.pcbi.1012127] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/11/2023] [Revised: 06/12/2024] [Accepted: 05/01/2024] [Indexed: 06/02/2024] Open
Abstract
Neurons in the primary visual cortex respond selectively to simple features of visual stimuli, such as orientation and spatial frequency. Simple cells, which have phase-sensitive responses, can be modeled by a single receptive field filter in a linear-nonlinear model. However, it is challenging to analyze phase-invariant complex cells, which require more elaborate models having a combination of nonlinear subunits. Estimating parameters of these models is made additionally more difficult by cortical neurons' trial-to-trial response variability. We develop a simple convolutional neural network method to estimate receptive field models for both simple and complex visual cortex cells from their responses to natural images. The model consists of a spatiotemporal filter, a parameterized rectifier unit (PReLU), and a two-dimensional Gaussian "map" of the receptive field envelope. A single model parameter determines the simple vs. complex nature of the receptive field, capturing complex cell responses as a summation of homogeneous subunits, and collapsing to a linear-nonlinear model for simple type cells. The convolutional method predicts simple and complex cell responses to natural image stimuli as well as grating tuning curves. The fitted models yield a continuum of values for the PReLU parameter across the sampled neurons, showing that the simple/complex nature of cells can vary in a continuous manner. We demonstrate that complex-like cells respond less reliably than simple-like cells. However, compensation for this unreliability with noise ceiling analysis reveals predictive performance for complex cells proportionately closer to that for simple cells. Most spatial receptive field structures are well fit by Gabor functions, whose parameters confirm well-known properties of cat A17/18 receptive fields.
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Levitt B, Goyon C, Banasek JT, Bott-Suzuki SC, Liekhus-Schmaltz C, Meier ET, Morton LA, Taylor A, Young WC, Nelson BA, Sutherland DA, Quinley M, Stepanov AD, Barhydt JR, Tsai P, Morgan KD, van Rossum N, Hossack AC, Weber TR, McGehee WA, Nguyen P, Shah A, Kiddy S, Van Patten M, Youmans AE, Higginson DP, McLean HS, Wurden GA, Shumlak U. Elevated Electron Temperature Coincident with Observed Fusion Reactions in a Sheared-Flow-Stabilized Z Pinch. PHYSICAL REVIEW LETTERS 2024; 132:155101. [PMID: 38682996 DOI: 10.1103/physrevlett.132.155101] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/27/2023] [Revised: 04/28/2023] [Accepted: 01/31/2024] [Indexed: 05/01/2024]
Abstract
The sheared-flow-stabilized Z pinch concept has been studied extensively and is able to produce fusion-relevant plasma parameters along with neutron production over several microseconds. We present here elevated electron temperature results spatially and temporally coincident with the plasma neutron source. An optical Thomson scattering apparatus designed for the FuZE device measures temperatures in the range of 1-3 keV on the axis of the device, 20 cm downstream of the nose cone. The 17-fiber system measures the radial profiles of the electron temperature. Scanning the laser time with respect to the neutron pulse time over a series of discharges allows the reconstruction of the T_{e} temporal response, confirming that the electron temperature peaks simultaneously with the neutron output, as well as the pinch current and inductive voltage generated within the plasma. Comparison to spectroscopic ion temperature measurements suggests a plasma in thermal equilibrium. The elevated T_{e} confirms the presence of a plasma assembled on axis, and indicates limited radiative losses, demonstrating a basis for scaling this device toward net gain fusion conditions.
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Chiasakul T, Mullier F, Lecompte T, Nguyen P, Cuker A. Laboratory Monitoring of Heparin Anticoagulation in Hemodialysis: Rationale and Strategies. Semin Nephrol 2023; 43:151477. [PMID: 38290962 DOI: 10.1016/j.semnephrol.2023.151477] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/01/2024]
Abstract
Unfractionated heparin (UFH) and low-molecular-weight heparins (LMWHs) are commonly used to prevent clotting of the hemodialysis extracorporeal circuit and optimize hemodialysis adequacy. There is no consensus on the optimal dosing for UFH and LMWHs during hemodialysis. In clinical practice, semiquantitative clotting scoring of the dialyzer and venous chamber may help to guide UFH and LMWH dose adjustment. Laboratory monitoring has not been shown to improve clinical outcomes and is therefore not routinely indicated in most hemodialysis patients. It might, however, be considered in select patients, such as those with extremes of body weight or history of repeated clotting or bleeding. Methods for laboratory monitoring include the activated partial thromboplastin time, activated clotting time, and antifactor Xa assays for UFH and antifactor Xa assay for LMWHs. Target ranges for anticoagulation in hemodialysis have been suggested but not clearly defined. When utilizing these tests, issues such as availability, standardization, interfering factors, and interpretation must be considered. In this narrative review, we discuss the rationale and methods of monitoring anticoagulation in hemodialysis.
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Siva S, Wallace N, Hardcastle N, Kothari G, Crombag L, Rangamuwa K, Annema J, Lee P, Dieleman EM, Jennings B, Yo S, Nguyen P, Bashirzadeh F, Fielding D, Yasufuku K, Ost D, Irving L, Steinfort D. Dosimetric Impact of Systematic Mediastinal Staging via Endobronchial Ultrasound for Patients with Locally Advanced Lung Cancer: The SEISMIC Trial. Int J Radiat Oncol Biol Phys 2023; 117:S29. [PMID: 37784468 DOI: 10.1016/j.ijrobp.2023.06.290] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/04/2023]
Abstract
PURPOSE/OBJECTIVE(S) The SEISMIC trial aims to find the best method for mediastinal staging in patients with lung cancer receiving chemoradiotherapy. Currently, CT or PET-CT scans are standard in clinical practice, but histological evaluation of the mediastinum is performed on a case-by-case basis. The study will examine the effect of systematic histological evaluation using Endobronchial Ultrasound (EBUS) on radiotherapy target volumes. The hypothesis of this study is that differences in staging between the diagnostic PET-CT and EBUS would result in reduced tumor coverage and/or increased doses to organs at risk (OAR). MATERIALS/METHODS SEISMIC is a prospective multicenter international cohort study. Patients were enrolled from Australia, the Netherlands, USA and Canada after regional IRB approvals. Patients were treated with 4DCT simulation. Two iGTV and PTV target volumes were delineated for each patient with discordant staging according to both PET-CT and EBUS, as were OARs. Two VMAT plans were generated for each patient based on either PET-CT or EBUS target volumes using knowledge-based planning methodology. Plans aimed to achieve institutional guidelines for target coverage and OAR dose constraints, with a prescribed dose of 60 Gy in 30 fractions. Target coverage and OAR doses for the PET- and EBUS-defined volumes were compared. RESULTS In 156 patients, EBUS showed a larger extent of disease than PET in 18 (11.5%) and a smaller extent of lymph node (LN) involvement than PET in 49 (31.4%). Out of 67 patients with PET-EBUS discordant results, 25 underwent upfront radiotherapy and were included in the study. EBUS revealed PET-occult LN involvement in 11/25 patients (44%). In these patients, 10/11 patients received <95% of the prescribed dose to PET-occult LN iGTVs; the median [range] minimum dose to the EBUS iGTV was 9.2 Gy [0.1 - 57.9 Gy]. When planning based on EBUS LN involvement, all patients received ≥95% of the prescribed dose to the iGTV (the median [range] minimum dose to the EBUS iGTV was 58.9 Gy [58.1 - 60.5 Gy]). This resulted in increased median [range] doses to OARs; mean lung dose increased by 1.1 Gy [0.3 - 8.4 Gy], esophagus mean dose increased by 3.6 Gy [0.2 - 24.8 Gy], and mean heart dose increased by 0.5 Gy [-0.6 - 8.5 Gy]. CONCLUSION Systematic endoscopic evaluation of the mediastinum had a significant effect on tumor coverage in a clinically meaningful proportion of cases and consequent plan adaptation impacted on organ-at-risk (OAR) doses. Results suggest systematic mediastinal LN staging should be considered in all patients prior to curative-intent radiotherapy. CLINICAL TRIAL ID ACTRN12617000333314.
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Nezondet C, Gandrieau J, Bourrelier J, Nguyen P, Zunquin G. The Effectiveness of a Physical Literacy-Based Intervention for Increasing Physical Activity Levels and Improving Health Indicators in Overweight and Obese Adolescents (CAPACITES 64). CHILDREN (BASEL, SWITZERLAND) 2023; 10:956. [PMID: 37371188 DOI: 10.3390/children10060956] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/20/2023] [Revised: 05/19/2023] [Accepted: 05/23/2023] [Indexed: 06/29/2023]
Abstract
Recently, the concept of Physical Literacy (PL) has emerged as a key concept for promoting active behavior and improving health indicators in adolescents. Overweight and obese adolescents have a low level of Physical Activity (PA), low cardiorespiratory capacity, and high Body Fat percentage (%BF). However, the development of PL in the interest of health improvement has never been studied in overweight and obese adolescents. The objective of this study was to evaluate the impact of an intervention developing PL in overweight and obese adolescents in order to increase their (PA) and improve their health. The study was a prospective, single-arm, non-randomized interventional study. The intervention brings together different actions in PA and dietary education in different adolescent living environments. The study took place over a 9-month period with two data collection times (0; +9 months) and measured Body Mass Index (BMI) and BMI z score, %BF and Skeletal Muscle Mass (%SMM), Moderate-to-Vigorous intensity Physical Activity (MVPA) by accelerometry, CRF, as well as PL by the CAPL-2 tool. Thirteen adolescents (age 11.7 (±1.09) years old) improved their PL scores (+8.3 (±9.3) pts; p ≤ 0.01). BMI z score (-0.3 (±0.3), p ≤ 0.01), their %BF (-3.8 (±4.9); p ≤ 0.01), their CRF (+1.5 (±1.7) mL·min·kg-1; p ≤ 0.01), and their MVPA (+4.6 (±13.7) min/day; p = 0.36). Initiating multidimensional interventions to develop PL in overweight and obese adolescents may be a promising prospect to enable an increase in their MVPA and improve their long-term health. Longer-term randomized controlled interventional studies are needed to confirm these findings.
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Nezondet C, Gandrieau J, Nguyen P, Zunquin G. Perceived Physical Literacy Is Associated with Cardiorespiratory Fitness, Body Composition and Physical Activity Levels in Secondary School Students. CHILDREN (BASEL, SWITZERLAND) 2023; 10:children10040712. [PMID: 37189960 DOI: 10.3390/children10040712] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/09/2023] [Revised: 04/06/2023] [Accepted: 04/07/2023] [Indexed: 05/17/2023]
Abstract
BACKGROUND Overweight and obese adolescents are often associated with lower Physical Activity (PA) levels and low Cardiorespiratory Fitness (CRF). Recently, the concept of Physical Literacy (PL), has been suggested to be associated with higher levels of active behavior and better health in adolescents. The purpose of this study is to investigate the relationships between PL, body composition, cardiorespiratory fitness and physical activity levels in French secondary school students. METHODS The level of PL was assessed in 85 French adolescents using a French version of the Perceived Physical Literacy Instrument (F-PPLI). Cardiorespiratory fitness was measured by the "20 m adapted walk/shuttle run test". The PA level was assessed by the Youth Risk Behavior Surveillance System questionnaire. Weight status was measured by the Body Mass Index (BMI) and the body composition data. RESULTS We find a significant association between the PL and the percentage Fat Mass (%FM) (r = -0.43; p ≤ 0.01), between the PL and moderate to vigorous PA (MVPA) per week (r = 0.38; p ≤ 0.01). The PL was associated (r = 0.36; p ≤ 0.01) with the percentage of Skeletal Muscle Mass (%SMM) and cardiorespiratory fitness (r = 0.40; p ≤ 0.05). CONCLUSIONS Developing the PL for the most disadvantaged secondary school students in a PA program could be a suitable strategy to increase their PA level, reduce their adiposity, and promote better long-term health.
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Nguyen P, Liu V, Proudfoot J, Davicioni E, Liu Y, Dal Pra A, Spratt D, Sandler H, Efstathiou J, Lawton C, Simko J, Rosenthal S, Zeitzer K, Mendez L, Hartford A, Hall W, Desai A, Pugh S, Tran P, Feng F. 1378P Biopsy-based basal-luminal subtyping classifier in high-risk prostate cancer: Analysis of the NRG Oncology/RTOG 9202, 9413, and 9902 randomized phase III trials. Ann Oncol 2022. [DOI: 10.1016/j.annonc.2022.07.1510] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022] Open
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Abbott R, Abe H, Acernese F, Ackley K, Adhikari N, Adhikari R, Adkins V, Adya V, Affeldt C, Agarwal D, Agathos M, Agatsuma K, Aggarwal N, Aguiar O, Aiello L, Ain A, Ajith P, Akutsu T, Albanesi S, Alfaidi R, Allocca A, Altin P, Amato A, Anand C, Anand S, Ananyeva A, Anderson S, Anderson W, Ando M, Andrade T, Andres N, Andrés-Carcasona M, Andrić T, Angelova S, Ansoldi S, Antelis J, Antier S, Apostolatos T, Appavuravther E, Appert S, Apple S, Arai K, Araya A, Araya M, Areeda J, Arène M, Aritomi N, Arnaud N, Arogeti M, Aronson S, Arun K, Asada H, Asali Y, Ashton G, Aso Y, Assiduo M, Melo SADS, Aston S, Astone P, Aubin F, AultONeal K, Austin C, Babak S, Badaracco F, Bader M, Badger C, Bae S, Bae Y, Baer A, Bagnasco S, Bai Y, Baird J, Bajpai R, Baka T, Ball M, Ballardin G, Ballmer S, Balsamo A, Baltus G, Banagiri S, Banerjee B, Bankar D, Barayoga J, Barbieri C, Barish B, Barker D, Barneo P, Barone F, Barr B, Barsotti L, Barsuglia M, Barta D, Bartlett J, Barton M, Bartos I, Basak S, Bassiri R, Basti A, Bawaj M, Bayley J, Mills J, Milotti E, Minenkov Y, Mio N, Mir L, Miravet-Tenés M, Mishkin A, Mishra C, Mishra T, Mistry T, Bazzan M, Mitra S, Mitrofanov V, Mitselmakher G, Mittleman R, Miyakawa O, Miyo K, Miyoki S, Mo G, Modafferi L, Moguel E, Becher B, Mogushi K, Mohapatra S, Mohite S, Molina I, Molina-Ruiz M, Mondin M, Montani M, Moore C, Moragues J, Moraru D, Bécsy B, Morawski F, More A, Moreno C, Moreno G, Mori Y, Morisaki S, Morisue N, Moriwaki Y, Mours B, Mow-Lowry C, Bedakihale V, Mozzon S, Muciaccia F, Mukherjee A, Mukherjee D, Mukherjee S, Mukherjee S, Mukherjee S, Mukund N, Mullavey A, Munch J, Beirnaert F, Muñiz E, Murray P, Musenich R, Muusse S, Nadji S, Nagano K, Nagar A, Nakamura K, Nakano H, Nakano M, Bejger M, Nakayama Y, Napolano V, Nardecchia I, Narikawa T, Narola H, Naticchioni L, Nayak B, Nayak R, Neil B, Neilson J, Belahcene I, Nelson A, Nelson T, Nery M, Neubauer P, Neunzert A, Ng K, Ng S, Nguyen C, Nguyen P, Nguyen T, Benedetto V, Quynh LN, Ni J, Ni WT, Nichols S, Nishimoto T, Nishizawa A, Nissanke S, Nitoglia E, Nocera F, Norman M, Beniwal D, North C, Nozaki S, Nurbek G, Nuttall L, Obayashi Y, Oberling J, O’Brien B, O’Dell J, Oelker E, Ogaki W, Benjamin M, Oganesyan G, Oh J, Oh K, Oh S, Ohashi M, Ohashi T, Ohkawa M, Ohme F, Ohta H, Okada M, Bennett T, Okutani Y, Olivetto C, Oohara K, Oram R, O’Reilly B, Ormiston R, Ormsby N, O’Shaughnessy R, O’Shea E, Oshino S, Bentley J, Ossokine S, Osthelder C, Otabe S, Ottaway D, Overmier H, Pace A, Pagano G, Pagano R, Page M, Pagliaroli G, BenYaala M, Pai A, Pai S, Pal S, Palamos J, Palashov O, Palomba C, Pan H, Pan KC, Panda P, Pang P, Bera S, Pankow C, Pannarale F, Pant B, Panther F, Paoletti F, Paoli A, Paolone A, Pappas G, Parisi A, Park H, Berbel M, Park J, Parker W, Pascucci D, Pasqualetti A, Passaquieti R, Passuello D, Patel M, Pathak M, Patricelli B, Patron A, Bergamin F, Paul S, Payne E, Pedraza M, Pedurand R, Pegoraro M, Pele A, Arellano FP, Penano S, Penn S, Perego A, Berger B, Pereira A, Pereira T, Perez C, Périgois C, Perkins C, Perreca A, Perriès S, Pesios D, Petermann J, Petterson D, Bernuzzi S, Pfeiffer H, Pham H, Pham K, Phukon K, Phurailatpam H, Piccinni O, Pichot M, Piendibene M, Piergiovanni F, Pierini L, Bersanetti D, Pierro V, Pillant G, Pillas M, Pilo F, Pinard L, Pineda-Bosque C, Pinto I, Pinto M, Piotrzkowski B, Piotrzkowski K, Bertolini A, Pirello M, Pitkin M, Placidi A, Placidi E, Planas M, Plastino W, Pluchar C, Poggiani R, Polini E, Pong D, Betzwieser J, Ponrathnam S, Porter E, Poulton R, Poverman A, Powell J, Pracchia M, Pradier T, Prajapati A, Prasai K, Prasanna R, Beveridge D, Pratten G, Principe M, Prodi G, Prokhorov L, Prosposito P, Prudenzi L, Puecher A, Punturo M, Puosi F, Puppo P, Bhandare R, Pürrer M, Qi H, Quartey N, Quetschke V, Quinonez P, Quitzow-James R, Raab F, Raaijmakers G, Radkins H, Radulesco N, Bhandari A, Raffai P, Rail S, Raja S, Rajan C, Ramirez K, Ramirez T, Ramos-Buades A, Rana J, Rapagnani P, Ray A, Bhardwaj U, Raymond V, Raza N, Razzano M, Read J, Rees L, Regimbau T, Rei L, Reid S, Reid S, Reitze D, Bhatt R, Relton P, Renzini A, Rettegno P, Revenu B, Reza A, Rezac M, Ricci F, Richards D, Richardson J, Richardson L, Bhattacharjee D, Riemenschneider G, Riles K, Rinaldi S, Rink K, Robertson N, Robie R, Robinet F, Rocchi A, Rodriguez S, Rolland L, Bhaumik S, Rollins J, Romanelli M, Romano R, Romel C, Romero A, Romero-Shaw I, Romie J, Ronchini S, Rosa L, Rose C, Bianchi A, Rosińska D, Ross M, Rowan S, Rowlinson S, Roy S, Roy S, Rozza D, Ruggi P, Ruiz-Rocha K, Ryan K, Bilenko I, Sachdev S, Sadecki T, Sadiq J, Saha S, Saito Y, Sakai K, Sakellariadou M, Sakon S, Salafia O, Salces-Carcoba F, Billingsley G, Salconi L, Saleem M, Salemi F, Samajdar A, Sanchez E, Sanchez J, Sanchez L, Sanchis-Gual N, Sanders J, Sanuy A, Bini S, Saravanan T, Sarin N, Sassolas B, Satari H, Sauter O, Savage R, Savant V, Sawada T, Sawant H, Sayah S, Birney R, Schaetzl D, Scheel M, Scheuer J, Schiworski M, Schmidt P, Schmidt S, Schnabel R, Schneewind M, Schofield R, Schönbeck A, Birnholtz O, Schulte B, Schutz B, Schwartz E, Scott J, Scott S, Seglar-Arroyo M, Sekiguchi Y, Sellers D, Sengupta A, Sentenac D, Biscans S, Seo E, Sequino V, Sergeev A, Setyawati Y, Shaffer T, Shahriar M, Shaikh M, Shams B, Shao L, Sharma A, Bischi M, Sharma P, Shawhan P, Shcheblanov N, Sheela A, Shikano Y, Shikauchi M, Shimizu H, Shimode K, Shinkai H, Shishido T, Biscoveanu S, Shoda A, Shoemaker D, Shoemaker D, ShyamSundar S, Sieniawska M, Sigg D, Silenzi L, Singer L, Singh D, Singh M, Bisht A, Singh N, Singha A, Sintes A, Sipala V, Skliris V, Slagmolen B, Slaven-Blair T, Smetana J, Smith J, Smith L, Biswas B, Smith R, Soldateschi J, Somala S, Somiya K, Song I, Soni K, Soni S, Sordini V, Sorrentino F, Sorrentino N, Bitossi M, Soulard R, Souradeep T, Sowell E, Spagnuolo V, Spencer A, Spera M, Spinicelli P, Srivastava A, Srivastava V, Staats K, Bizouard MA, Stachie C, Stachurski F, Steer D, Steinlechner J, Steinlechner S, Stergioulas N, Stops D, Stover M, Strain K, Strang L, Blackburn J, Stratta G, Strong M, Strunk A, Sturani R, Stuver A, Suchenek M, Sudhagar S, Sudhir V, Sugimoto R, Suh H, Blair C, Sullivan A, Summerscales T, Sun L, Sunil S, Sur A, Suresh J, Sutton P, Suzuki T, Suzuki T, Suzuki T, Blair D, Swinkels B, Szczepańczyk M, Szewczyk P, Tacca M, Tagoshi H, Tait S, Takahashi H, Takahashi R, Takano S, Takeda H, Blair R, Takeda M, Talbot C, Talbot C, Tanaka K, Tanaka T, Tanaka T, Tanasijczuk A, Tanioka S, Tanner D, Tao D, Bobba F, Tao L, Tapia R, Martín ETS, Taranto C, Taruya A, Tasson J, Tenorio R, Terhune J, Terkowski L, Thirugnanasambandam M, Bode N, Thomas M, Thomas P, Thompson E, Thompson J, Thondapu S, Thorne K, Thrane E, Tiwari S, Tiwari S, Tiwari V, Boër M, Toivonen A, Tolley A, Tomaru T, Tomura T, Tonelli M, Tornasi Z, Torres-Forné A, Torrie C, e Melo IT, Töyrä D, Bogaert G, Trapananti A, Travasso F, Traylor G, Trevor M, Tringali M, Tripathee A, Troiano L, Trovato A, Trozzo L, Trudeau R, Boldrini M, Tsai D, Tsang K, Tsang T, Tsao JS, Tse M, Tso R, Tsuchida S, Tsukada L, Tsuna D, Tsutsui T, Bolingbroke G, Turbang K, Turconi M, Tuyenbayev D, Ubhi A, Uchikata N, Uchiyama T, Udall R, Ueda A, Uehara T, Ueno K, Bonavena L, Ueshima G, Unnikrishnan C, Urban A, Ushiba T, Utina A, Vajente G, Vajpeyi A, Valdes G, Valentini M, Valsan V, Bondu F, van Bakel N, van Beuzekom M, van Dael M, van den Brand J, Van Den Broeck C, Vander-Hyde D, van Haevermaet H, van Heijningen J, van Putten M, van Remortel N, Bonilla E, Vardaro M, Vargas A, Varma V, Vasúth M, Vecchio A, Vedovato G, Veitch J, Veitch P, Venneberg J, Venugopalan G, Bonnand R, Verkindt D, Verma P, Verma Y, Vermeulen S, Veske D, Vetrano F, Viceré A, Vidyant S, Viets A, Vijaykumar A, Booker P, Villa-Ortega V, Vinet JY, Virtuoso A, Vitale S, Vocca H, von Reis E, von Wrangel J, Vorvick C, Vyatchanin S, Wade L, Boom B, Wade M, Wagner K, Walet R, Walker M, Wallace G, Wallace L, Wang J, Wang J, Wang W, Ward R, Bork R, Warner J, Was M, 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I, Martin R, Martinez M, Martinez V, Martinez V, Martinovic K, Martynov D, Marx E, Masalehdan H, Mason K, Massera E, Masserot A, Masso-Reid M, Mastrogiovanni S, Matas A, Mateu-Lucena M, Matichard F, Matiushechkina M, Mavalvala N, McCann J, McCarthy R, McClelland D, McClincy P, McCormick S, McCuller L, McGhee G, McGuire S, McIsaac C, McIver J, McRae T, McWilliams S, Meacher D, Mehmet M, Mehta A, Meijer Q, Melatos A, Melchor D, Mendell G, Menendez-Vazquez A, Menoni C, Mercer R, Mereni L, Merfeld K, Merilh E, Merritt J, Merzougui M, Meshkov S, Messenger C, Messick C, Meyers P, Meylahn F, Mhaske A, Miani A, Miao H, Michaloliakos I, Michel C, Michimura Y, Middleton H, Mihaylov D, Milano L, Miller A, Miller A, Miller B, Millhouse M. Search for continuous gravitational wave emission from the Milky Way center in O3 LIGO-Virgo data. Int J Clin Exp Med 2022. [DOI: 10.1103/physrevd.106.042003] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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RL, Warner J, Was M, Washington NY, Watchi J, Weaver B, Webster SA, Weinert M, Weinstein AJ, Weiss R, Weller CM, Wellmann F, Wen L, Weßels P, Wette K, Whelan JT, White DD, Whiting BF, Whittle C, Wilken D, Williams D, Williams MJ, Williamson AR, Willis JL, Willke B, Wilson DJ, Winkler W, Wipf CC, Wlodarczyk T, Woan G, Woehler J, Wofford JK, Wong ICF, Wu DS, Wysocki DM, Xiao L, Yamamoto H, Yang FW, Yang L, Yang Y, Yang Z, Yap MJ, Yeeles DW, Yelikar AB, Ying M, Yoo J, Yu H, Yu H, Zadrożny A, Zanolin M, Zelenova T, Zendri JP, Zevin M, Zhang J, Zhang L, Zhang T, Zhang Y, Zhao C, Zhao G, Zhao Y, Zhou R, Zhou Z, Zhu XJ, Zimmerman AB, Zucker ME, Zweizig J, Jeong D, Shandera S. Search for Subsolar-Mass Binaries in the First Half of Advanced LIGO's and Advanced Virgo's Third Observing Run. PHYSICAL REVIEW LETTERS 2022; 129:061104. [PMID: 36018635 DOI: 10.1103/physrevlett.129.061104] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/01/2021] [Revised: 03/18/2022] [Accepted: 06/07/2022] [Indexed: 06/15/2023]
Abstract
We report on a search for compact binary coalescences where at least one binary component has a mass between 0.2 M_{⊙} and 1.0 M_{⊙} in Advanced LIGO and Advanced Virgo data collected between 1 April 2019 1500 UTC and 1 October 2019 1500 UTC. We extend our previous analyses in two main ways: we include data from the Virgo detector and we allow for more unequal mass systems, with mass ratio q≥0.1. We do not report any gravitational-wave candidates. The most significant trigger has a false alarm rate of 0.14 yr^{-1}. This implies an upper limit on the merger rate of subsolar binaries in the range [220-24200] Gpc^{-3} yr^{-1}, depending on the chirp mass of the binary. We use this upper limit to derive astrophysical constraints on two phenomenological models that could produce subsolar-mass compact objects. One is an isotropic distribution of equal-mass primordial black holes. Using this model, we find that the fraction of dark matter in primordial black holes in the mass range 0.2 M_{⊙}<m_{PBH}<1.0 M_{⊙} is f_{PBH}≡Ω_{PBH}/Ω_{DM}≲6%. This improves existing constraints on primordial black hole abundance by a factor of ∼3. The other is a dissipative dark matter model, in which fermionic dark matter can collapse and form black holes. The upper limit on the fraction of dark matter black holes depends on the minimum mass of the black holes that can be formed: the most constraining result is obtained at M_{min}=1 M_{⊙}, where f_{DBH}≡Ω_{DBH}/Ω_{DM}≲0.003%. These are the first constraints placed on dissipative dark models by subsolar-mass analyses.
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M, Sigg D, Singer L, Singh D, Singh N, Boer M, Singha A, Sintes A, Sipala V, Skliris V, Slagmolen B, Slaven-Blair T, Smetana J, Smith J, Smith R, Soldateschi J, Bogaert G, Somala S, Somiya K, Son E, Soni K, Soni S, Sordini V, Sorrentino F, Sorrentino N, Sotani H, Soulard R, Boldrini M, Souradeep T, Sowell E, Spagnuolo V, Spencer A, Spera M, Srinivasan R, Srivastava A, Srivastava V, Staats K, Stachie C, Bonavena L, Steer D, Steinlechner J, Steinlechner S, Stops D, Stover M, Strain K, Strang L, Stratta G, Strunk A, Sturani R, Bondu F, Stuver A, Sudhagar S, Sudhir V, Sugimoto R, Suh H, Summerscales T, Sun H, Sun L, Sunil S, Sur A, Bonilla E, Suresh J, Sutton P, Suzuki T, Suzuki T, Swinkels B, Szczepańczyk M, Szewczyk P, Tacca M, Tagoshi H, Tait S, Bonnand R, Takahashi H, Takahashi R, Takamori A, Takano S, Takeda H, Takeda M, Talbot C, Talbot C, Tanaka H, Tanaka K, Booker P, Tanaka K, Tanaka T, Tanaka T, Tanasijczuk A, Tanioka S, Tanner D, Tao D, Tao L, Martín ETS, Taranto C, Boom B, Tasson J, Telada S, Tenorio R, Terhune J, Terkowski L, Thirugnanasambandam M, Thomas M, Thomas P, Thompson J, Thondapu S, Bork R, Thorne K, Thrane E, Tiwari S, Tiwari S, Tiwari V, Toivonen A, Toland K, Tolley A, Tomaru T, Tomigami Y, Boschi V, Tomura T, Tonelli M, Torres-Forné A, Torrie C, e Melo IT, Töyrä D, Trapananti A, Travasso F, Traylor G, Trevor M, Bose N, Tringali M, Tripathee A, Troiano L, Trovato A, Trozzo L, Trudeau R, Tsai D, Tsai D, Tsang K, Tsang T, Bose S, Tsao JS, Tse M, Tso R, Tsubono K, Tsuchida S, Tsukada L, Tsuna D, Tsutsui T, Tsuzuki T, Turbang K, Bossilkov V, Turconi M, Tuyenbayev D, Ubhi A, Uchikata N, Uchiyama T, Udall R, Ueda A, Uehara T, Ueno K, Ueshima G, Boudart V, Unnikrishnan C, Uraguchi F, Urban A, Ushiba T, Utina A, Vahlbruch H, Vajente G, Vajpeyi A, Valdes G, Valentini M, Bouffanais Y, Valsan V, van Bakel N, van Beuzekom M, van den Brand J, Van Den Broeck C, Vander-Hyde D, van der Schaaf L, van Heijningen J, Vanosky J, van Putten M, Bozzi A, van Remortel N, Vardaro M, Vargas A, Varma V, Vasúth M, Vecchio A, Vedovato G, Veitch J, Veitch P, Venneberg J, Bradaschia C, Venugopalan G, Verkindt D, Verma P, Verma Y, Veske D, Vetrano F, Viceré A, Vidyant S, Viets A, Vijaykumar A, Brady P, Villa-Ortega V, Vinet JY, Virtuoso A, Vitale S, Vo T, Vocca H, von Reis E, von Wrangel J, Vorvick C, Vyatchanin S, Bramley A, Wade L, Wade M, Wagner K, Walet R, Walker M, Wallace G, Wallace L, Walsh S, Wang J, Wang J, Branch A, Wang W, Ward R, Warner J, Was M, Washimi T, Washington N, Watchi J, Weaver B, Webster S, Weinert M, Branchesi M, Weinstein A, Weiss R, Weller C, Wellmann F, Wen L, Weßels P, Wette K, Whelan J, White D, Whiting B, Brau J, Whittle C, Wilken D, Williams D, Williams M, Williamson A, Willis J, Willke B, Wilson D, Winkler W, Wipf C, Breschi M, Wlodarczyk T, Woan G, Woehler J, Wofford J, Wong I, Wu C, Wu D, Wu H, Wu S, Wysocki D, Briant T, Xiao L, Xu WR, Yamada T, Yamamoto H, Yamamoto K, Yamamoto K, Yamamoto T, Yamashita K, Yamazaki R, Yang F, Briggs J, Yang L, Yang Y, Yang Y, Yang Z, Yap M, Yeeles D, Yelikar A, Ying M, Yokogawa K, Yokoyama J, Brillet A, Yokozawa T, Yoo J, Yoshioka T, Yu H, Yu H, Yuzurihara H, Zadrożny A, Zanolin M, Zeidler S, Zelenova T, Brinkmann M, Zendri JP, Zevin M, Zhan M, Zhang H, Zhang J, Zhang L, Zhang T, Zhang Y, Zhao C, Zhao G, Brockill P, Zhao Y, Zhao Y, Zhou R, Zhou Z, Zhu X, Zhu ZH, Zucker M, Zweizig J, Brooks A, Brooks J, Brown D, Brunett S, Bruno G, Bruntz R, Bryant J, Bulik T, Bulten H, Buonanno A, Buscicchio R, Buskulic D, Buy C, Byer R, Cadonati L, Cagnoli G, Cahillane C, Bustillo JC, Callaghan J, Callister T, Calloni E, Cameron J, Camp J, Canepa M, Canevarolo S, Cannavacciuolo M, Cannon K, Cao H, Cao Z, Capocasa E, Capote E, Carapella G, Carbognani F, Carlin J, Carney M, Carpinelli M, Carrillo G, Carullo G, Carver T, Diaz JC, Casentini C, Castaldi G, Caudill S, Cavaglià M, Cavalier F, Cavalieri R, Ceasar M, Cella G, Cerdá-Durán P, Cesarini E, Chaibi W, Chakravarti K, Subrahmanya SC, Champion E, Chan CH, Chan C, Chan C, Chan K, Chan M, Chandra K, Chanial P, Chao S, Charlton P, Chase E, Chassande-Mottin E, Chatterjee C, Chatterjee D, Chatterjee D, Chaturvedi M, Chaty S, Chen C, Chen H, Chen J, Chen K, Chen X, Chen YB, Chen YR, Chen Z, Cheng H, Cheong C, Cheung H, Chia H, Chiadini F, Chiang CY, Chiarini G, Chierici R, Chincarini A, Chiofalo M, Chiummo A, Cho G, Cho H, Choudhary R, Choudhary S, Christensen N, Chu H, Chu Q, Chu YK, Chua S, Chung K, Ciani G, Ciecielag P, Cieślar M, Cifaldi M, Ciobanu A, Ciolfi R, Cipriano F, Cirone A, Clara F, Clark E, Clark J, Clarke L, Clearwater P, Clesse S, Cleva F, Coccia E, Codazzo E, Cohadon PF, Cohen D, Cohen L, Colleoni M, Collette C, Colombo A, Colpi M, Compton C, Constancio M, Conti L, Cooper S, Corban P, Corbitt T, Cordero-Carrión I, Corezzi S, Corley K, Cornish N, Corre D, Corsi A, Cortese S, Costa C, Cotesta R, Coughlin M, Coulon JP, Countryman S, Cousins B, Couvares P, Coward D, Cowart M, Coyne D, Coyne R, Creighton J, Creighton T, Criswell A, Croquette M, Crowder S, Cudell J, Cullen T, Cumming A, Cummings R, Cunningham L, Cuoco E, Curyło M, Dabadie P, Canton TD, Dall’Osso S, Dálya G, Dana A, DaneshgaranBajastani L, D’Angelo B, Danilishin S, D’Antonio S, Danzmann K, Darsow-Fromm C, Dasgupta A, Datrier L, Datta S, Dattilo V, Dave I, Davier M, Davies G, Davis D, Davis M, Daw E, Dean R, DeBra D, Deenadayalan M, Degallaix J, De Laurentis M, Deléglise S, Del Favero V, De Lillo F, De Lillo N, Del Pozzo W, DeMarchi L, De Matteis F, D’Emilio V, Demos N, Dent T, Depasse A, De Pietri R, De Rosa R, De Rossi C, DeSalvo R, De Simone R, Dhurandhar S, Díaz M, Diaz-Ortiz M, Didio N, Dietrich T, Di Fiore L, Di Fronzo C, Di Giorgio C, Di Giovanni F, Di Giovanni M, Di Girolamo T, Di Lieto A, Ding B, Di Pace S, Di Palma I, Di Renzo F, Divakarla A, Dmitriev A, Doctor Z, D’Onofrio L, Donovan F, Dooley K, Doravari S, Dorrington I, Drago M, Driggers J, Drori Y, Ducoin JG, Dupej P, Durante O, D’Urso D, Duverne PA, Dwyer S, Eassa C, Easter P, Ebersold M, Eckhardt T, Eddolls G, Edelman B, Edo T, Edy O, Effler A, Eguchi S, Eichholz J, Eikenberry S, Eisenmann M, Eisenstein R, Ejlli A, Engelby E, Enomoto Y, Errico L, Essick R, Estellés H, Estevez D, Etienne Z, Etzel T, Evans M, Evans T, Ewing B, Fafone V, Fair H, Fairhurst S, Farah A, Farinon S, Farr B, Farr W, Farrow N, Fauchon-Jones E, Favaro G, Favata M, Fays M, Fazio M, Feicht J, Fejer M, Fenyvesi E, Ferguson D, Fernandez-Galiana A, Ferrante I, Ferreira T, Fidecaro F, Figura P, Fiori I, Fishbach M, Fisher R, Fittipaldi R, Fiumara V, Flaminio R, Floden E, Fong H, Font J, Fornal B, Forsyth P, Franke A, Frasca S, Frasconi F, Frederick C, Freed J, Frei Z, Freise A, Frey R, Fritschel P, Frolov V, Fronzé G, Fujii Y, Fujikawa Y, Fukunaga M, Fukushima M, Fulda P, Fyffe M, Gabbard H, Gadre B, Gair J, Gais J, Galaudage S, Gamba R, Ganapathy D, Ganguly A, Gao D, Gaonkar S, Garaventa B, García-Núñez C, García-Quirós C, Garufi F, Gateley B, Gaudio S, Gayathri V, Ge GG, Gemme G, Gennai A, George J, Gerberding O, Gergely L, Gewecke P, Ghonge S, Ghosh A, Ghosh A, Ghosh S, Ghosh S, Giacomazzo B, Giacoppo L, Giaime J, Giardina K, Gibson D, Gier C, Giesler M, Giri P, Gissi F, Glanzer J, Gleckl A, Godwin P, Goetz E, Goetz R, Gohlke N, Goncharov B, González G, Gopakumar A, Gosselin M, Gouaty R, Gould D, Grace B, Grado A, Granata M, Granata V, Grant A, Gras S, Grassia P, Gray C, Gray R, Greco G, Green A, Green R, Gretarsson A, Gretarsson E, Griffith D, Griffiths W, Griggs H, Grignani G, Grimaldi A, Grimm S, Grote H, Grunewald S, Gruning P, Guerra D, Guidi G, Guimaraes A, Guixé G, Gulati H, Guo HK, Guo Y, Gupta A, Gupta A, Gupta P, Gustafson E, Gustafson R, Guzman F, Ha S, Haegel L, Hagiwara A, Haino S, Halim O, Hall E, Hamilton E, Hammond G, Han WB, Haney M, Hanks J, Hanna C, Hannam M, Hannuksela O, Hansen H, Hansen T, Hanson J, Harder T, Hardwick T, Haris K, Harms J, Harry G, Harry I, Hartwig D, Hasegawa K, Haskell B, Hasskew R, Haster CJ, Hattori K, Haughian K, Hayakawa H, Hayama K, Hayes F, Healy J, Heidmann A, Heidt A, Heintze M, Heinze J, Heinzel J, Heitmann H, Hellman F, Hello P, Helmling-Cornell A, Hemming G, Hendry M, Heng I, Hennes E, Hennig J, Hennig M, Hernandez A, Vivanco FH, Heurs M, Hild S, Hill P, Himemoto Y, Hines A, Hiranuma Y, Hirata N, Hirose E, Hochheim S, Hofman D, Hohmann J, Holcomb D, Holland N, Hollows I, Holmes Z, Holt K, Holz D, Hong Z, Hopkins P, Hough J, Hourihane S, Howell E, Hoy C, Hoyland D, Hreibi A, Hsieh BH, Hsu Y, Huang GZ, Huang HY, Huang P, Huang YC, Huang YJ, Huang Y, Hübner M, Huddart A, Hughey B, Hui D, Hui V, Husa S, Huttner S, Huxford R, Huynh-Dinh T, Ide S, Idzkowski B, Iess A, Ikenoue B, Imam S, Inayoshi K, Ingram C, Inoue Y, Ioka K, Isi M, Isleif K, Ito K, Itoh Y, Iyer B, Izumi K, JaberianHamedan V, Jacqmin T, Jadhav S, Jadhav S, James A, Jan A, Jani K, Janquart J, Janssens K, Janthalur N, Jaranowski P, Jariwala D, Jaume R, Jenkins A, Jenner K, Jeon C, Jeunon M, Jia W, Jin HB, Johns G, Jones A, Jones D, Jones J, Jones P, Jones R, Jonker R, Ju L, Jung P, Jung K, Junker J, Juste V, Kaihotsu K, Kajita T, Kakizaki M, Kalaghatgi C, Kalogera V, Kamai B, Kamiizumi M, Kanda N, Kandhasamy S, Kang G, Kanner J, Kao Y, Kapadia S, Kapasi D, Karat S, Karathanasis C, Karki S, Kashyap R, Kasprzack M, Kastaun W, Katsanevas S, Katsavounidis E, Katzman W, Kaur T, Kawabe K, Kawaguchi K, Kawai N, Kawasaki T, Kéfélian F, Keitel D, Key J, Khadka S, Khalili F, Khan S, Khazanov E, Khetan N, Khursheed M, Kijbunchoo N, Kim C, Kim J, Kim J, Kim K, Kim W, Kim YM, Kimball C, Kimura N, Kinley-Hanlon M, Kirchhoff R, Kissel J, Kita N, Kitazawa H, Kleybolte L, Klimenko S, Knee A, Knowles T, Knyazev E, Koch P, Koekoek G, Kojima Y, Kokeyama K, Koley S, Kolitsidou P, Kolstein M, Komori K, Kondrashov V, Kong A, Kontos A, Koper N, Korobko M, Kotake K, Kovalam M, Kozak D, Kozakai C, Kozu R, Kringel V, Krishnendu N, Królak A, Kuehn G, Kuei F, Kuijer P, Kumar A, Kumar P, Kumar R, Kumar R, Kume J, Kuns K, Kuo C, Kuo HS, Kuromiya Y, Kuroyanagi S, Kusayanagi K, Kuwahara S, Kwak K, Lagabbe P, Laghi D, Lalande E, Lam T, Lamberts A, Landry M, Lane B, Lang R, Lange J, Lantz B, La Rosa I, Lartaux-Vollard A, Lasky P, Laxen M, Lazzarini A, Lazzaro C, Leaci P, Leavey S, Lecoeuche Y, Lee H, Lee H, Lee H, Lee J, Lee K, Lee R, Lehmann J, Lemaître A, Leonardi M, Leroy N, Letendre N, Levesque C, Levin Y, Leviton J, Leyde K, Li A, Li B, Li J, Li K, Li T, Li X, Lin CY, Lin FK, Lin FL, Lin H, Lin LCC, Linde F, Linker S, Linley J, Littenberg T, Liu G, Liu J, Liu K, Liu X, Llamas F, Llorens-Monteagudo M, Lo R, Lockwood A, London L, Longo A, Lopez D, Portilla ML, Lorenzini M, Loriette V, Lormand M, Losurdo G, Lott T, Lough J, Lousto C, Lovelace G, Lucaccioni J, Lück H, Lumaca D, Lundgren A, Luo LW, Lynam J, Macas R, MacInnis M, Macleod D, MacMillan I, Macquet A, Hernandez IM, Magazzù C, Magee R, Maggiore R, Magnozzi M, Mahesh S, Majorana E, Makarem C, Maksimovic I, Maliakal S, Malik A, Man N, Mandic V, Mangano V, Mango J, Mansell G, Manske M, Mantovani M, Mapelli M, Marchesoni F, Marchio M, Marion F, Mark Z, Márka S, Márka Z, Markakis C, Markosyan A, Markowitz A, Maros E, Marquina A, Marsat S, Martelli F, Martin I, Martin R, Martinez M, Martinez V, Martinez V, Martinovic K, Martynov D, Marx E, Masalehdan H, Mason K, Massera E, Masserot A, Massinger T, Masso-Reid M, Mastrogiovanni S, Matas A, Mateu-Lucena M, Matichard F, Matiushechkina M, Mavalvala N, McCann J, McCarthy R, McClelland D, McClincy P, McCormick S, McCuller L, McGhee G, McGuire S, McIsaac C, McIver J, McRae T, McWilliams S, Meacher D, Mehmet M, Mehta A, Meijer Q, Melatos A, Melchor D, Mendell G, Menendez-Vazquez A, Menoni C, Mercer R, Mereni L, Merfeld K, Merilh E, Merritt J, Merzougui M, Meshkov S, Messenger C, Messick C, Meyers P, Meylahn F, Mhaske A, Miani A, Miao H, Michaloliakos I, Michel C, Michimura Y, Middleton H, Milano L, Miller A, Miller A, Miller B, Millhouse M, Mills J, Milotti E, Minazzoli O, Minenkov Y, Mio N, Mir L, Miravet-Tenés M, Mishra C, Mishra T, Mistry T, Mitra S, Mitrofanov V, Mitselmakher G, Mittleman R, Miyakawa O, Miyamoto A, Miyazaki Y, Miyo K, Miyoki S, Mo G, Moguel E, Mogushi K, Mohapatra S, Mohite S, Molina I, Molina-Ruiz M, Mondin M, Montani M, Moore C, Moraru D, Morawski F, More A, Moreno C. All-sky, all-frequency directional search for persistent gravitational waves from Advanced LIGO’s and Advanced Virgo’s first three observing runs. Int J Clin Exp Med 2022. [DOI: 10.1103/physrevd.105.122001] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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Besch G, Ilic D, Ginet M, d’Audigier C, Nguyen P, Ferreira D, Samain E, Mourey G, Pili-Floury S. Identification of Heparin-Induced Thrombocytopenia in Surgical Critically Ill Patients by Using the HIT Expert Probability Score: An Observational Pilot Study. J Clin Med 2022; 11:jcm11061515. [PMID: 35329842 PMCID: PMC8951334 DOI: 10.3390/jcm11061515] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/02/2022] [Revised: 03/03/2022] [Accepted: 03/06/2022] [Indexed: 12/03/2022] Open
Abstract
Background: Heparin-induced thrombocytopenia (HIT) remains a challenging diagnosis especially in surgical intensive care unit (SICU) patients. The aim of the study was to evaluate for the first time the diagnostic accuracy of the HIT Expert Probability (HEP) score in the early identification of HIT in SICU patients. Methods: The HEP and 4Ts scores were calculated in all patients with suspected HIT during their stay in our SICU. The diagnosis of HIT was finally confirmed (HIT+ group) or excluded (HIT− group) by an independent committee blinded to the HEP and 4Ts score values. The primary outcome was the sensitivity and specificity of a HEP score ≥ 5 for the diagnosis of HIT. The secondary outcome was the area under the ROC curve (AUC) of the HEP and 4Ts scores in the diagnosis of HIT. Results: Respectively 6 and 113 patients were included in the HIT+ and HIT− groups. A HEP score value ≥ 5 had a sensitivity (95% confidence interval (95% CI)) of 1.00 (0.55−1.00), and a specificity (95% CI) of 0.92 (0.86−0.96). The AUC (95% CI) was significantly higher for the HEP score versus for the 4Ts score (0.967 (0.922−1.000) versus 0.707 (0.449−0.965); p = 0.035). Conclusions: A HEP score value < 5 could be helpful to rule out HIT in SICU patients.
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Leung J, Pender P, French J, Leung D, Mussap C, Asrress K, Taylor D, Naguib Badie T, Kadappu K, Gibbs O, Kachwalla K, Nguyen P, Hopkins A, Lo S. Intravascular lithotripsy during percutaneous coronary intervention for calcified coronary lesions: analysis of patient and procedural characteristics and clinical outcomes. Eur Heart J 2022. [DOI: 10.1093/eurheartj/ehab849.130] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
Abstract
Funding Acknowledgements
Type of funding sources: None.
Background/Introduction
Coronary artery calcification is frequently encountered during percutaneous coronary intervention (PCI). It can reduce PCI success and increase intra-procedural and post-procedural complications, including stent embolization, under-expansion and mal-apposition. Intravascular lithotripsy (IVL) is a new tool developed to treat calcified coronary lesions.
Purpose
Retrospective analysis of all cases of intravascular lithotripsy performed within our local health district to examine patient and procedural characteristics and clinical outcomes.
Methods
All patients undergoing PCI with intravascular lithotripsy between September 2019-August 2021 within our local health district were analysed. Patient and procedural characteristics and clinical outcomes were recorded.
Results
67 patients (50 men) were included with mean age 71.4 ± 8.7years. Risk factors prevalence included smoking (34%), hypertension (82%), dyslipidaemia (69%) and diabetes (46%). Trans-radial artery access was used in 38 patients (57%). IVL was performed most commonly in the left anterior descending artery (52%),[Figure 1]. IVL was utilised in 9 chronic total occlusions and 12 bifurcation lesions. Intracoronary (IC) imaging was performed in 59 patients (88%), intravascular ultrasound in 41(61%) and optical coherence tomography in 18 (27%). 41 (69%) patients had imaging performed pre and post IVL and post PCI. IC imaging identified 14 cases with 270º calcification arc and 45 cases with 360º arc. Nine cases (13.4%) required rotational atherectomy prior to IVL (most commonly 1.75mm burr). Mean reference vessel diameter was 3.2 ± 0.3mm. Mean lesion length was 36.3 ± 16.5mm. Mean pre-PCI stenosis was 85.5 ± 10.8%. Drug eluting stents were successfully deployed in 57 cases (85%), 10 had balloon angioplasty alone. Mean stent length was 39.2 ± 17.8mm. Mean post-PCI stenosis was 4.5 ± 13.3% (median 0%). Figure 2 shows a statistically significant increase in minimum lumen diameter and minimum lumen area post-IVL and minimal-stent-area (MSA) post-PCI. Mean stent expansion was 83%. Mean screening time 35.8 ± 17.8 minutes with mean contrast used 207.3 ± 78.7mL. No sustained arrhythmias or side-branch loss occurred. Vessel rupture was recorded in one patient necessitating urgent cardiac surgery (due to oversized balloon) and in 4 cases the IVL balloon could not cross the lesion.
Conclusion
Our experience shows that IVL is safe and effective and facilitates stent delivery and expansion. Intracoronary imaging is important to determine the need for calcium modification and evaluate its success prior to stent delivery and to confirm optimised stent expansion. Abstract Figure. Breakdown of PCI Artery Abstract Figure. IC Dimensions Pre/Post IVL/Post PCI
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Nguyen P, Chevillard L, Gouda AS, Gourlain H, Labat L, Malissin I, Deye N, Voicu S, Mégarbane B. L-carnitine does not improve valproic acid poisoning management: a cohort study with toxicokinetics and concentration/effect relationships. Ann Intensive Care 2022; 12:7. [PMID: 35092514 PMCID: PMC8800998 DOI: 10.1186/s13613-022-00984-z] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/28/2021] [Accepted: 01/14/2022] [Indexed: 12/14/2022] Open
Abstract
Background Valproic acid (VPA) poisoning is responsible for life-threatening neurological and metabolic impairments. Despite only low-level evidence of effectiveness, L-carnitine has been used for years to prevent or reverse VPA-related toxicity. We aimed to evaluate the effects of L-carnitine used to treat acute VPA poisoning on the time-course of plasma VPA concentrations and VPA-related toxicity. We designed a single-center cohort study including all VPA-poisoned patients admitted to the intensive care unit. We studied VPA toxicokinetics using a nonlinear mixed-effects model-based population approach and modeled individual plasma VPA/blood lactate concentration relationships. Then, we evaluated L-carnitine-attributed effects by comparing VPA elimination half-lives and time-courses of blood lactate levels and organ dysfunction [assessed by the Sequential Organ Failure Assessment (SOFA) score] between matched L-carnitine-treated and non-treated patients using a multivariate analysis including a propensity score. Results Sixty-nine VPA-poisoned patients (40F/29 M; age, 41 years [32–47]) (median [25th–75th percentiles]; SOFA score, 4 [1–6]) were included. The presumed VPA ingested dose was 15 g [10–32]. Plasma VPA concentration on admission was 231 mg/L [147–415]. The most common manifestations were coma (70%), hyperlactatemia (3.9 mmol/L [2.7–4.9]) and hyperammonemia (127 mmol/L [92–159]). VPA toxicokinetics well fitted a one-compartment linear model with a mean elimination half-life of 22.9 h (coefficient of variation, 28.1%). Plasma VPA (C)/blood lactate concentration (E) relationships were well described by an exponential growth equation [\documentclass[12pt]{minimal}
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\begin{document}$$E={E}_{0}\times {e}^{k\cdot C}$$\end{document}E=E0×ek·C; with baseline E0 = 1.3 mmol/L (43.9%) and rate constant of the effect, k = 0.003 L/mg (59.5%)]. Based on a multivariate analysis, peak blood lactate concentration was the only factor independently associated with L-carnitine administration (odds ratio, 1.9, 95% confidence interval, 1.2–2.8; P = 0.004). We found no significant contribution of L-carnitine to enhancing VPA elimination, accelerating blood lactate level normalization and/or preventing organ dysfunction. Conclusions VPA poisoning results in severe toxicity. While L-carnitine does not contribute to enhancing VPA clearance, its impact on accelerating blood lactate level normalization and/or preventing organ dysfunction remains uncertain. Investigating VPA toxicokinetics and concentration/effect relationships may help understanding how to improve VPA-poisoned patient management. Supplementary Information The online version contains supplementary material available at 10.1186/s13613-022-00984-z.
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Jayanti S, Juergens C, Makris A, Hennessy A, Lo S, Badie T, Xu J, Kadappu K, Kachwalla H, Gibbs O, Faour A, Rajaratnam R, French J, Leung D, Nguyen P. Ultrasound Guidance Facilitates Ideal Femoral Puncture for Coronary Angiography. Heart Lung Circ 2022. [DOI: 10.1016/j.hlc.2022.06.640] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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Jia W, Yamamoto H, Kuns K, Effler A, Evans M, Fritschel P, Abbott R, Adams C, Adhikari RX, Ananyeva A, Appert S, Arai K, Areeda JS, Asali Y, Aston SM, Austin C, Baer AM, Ball M, Ballmer SW, Banagiri S, Barker D, Barsotti L, Bartlett J, Berger BK, Betzwieser J, Bhattacharjee D, Billingsley G, Biscans S, Blair CD, Blair RM, Bode N, Booker P, Bork R, Bramley A, Brooks AF, Brown DD, Buikema A, Cahillane C, Cannon KC, Chen X, Ciobanu AA, Clara F, Compton CM, Cooper SJ, Corley KR, Countryman ST, Covas PB, Coyne DC, Datrier LEH, Davis D, Di Fronzo C, Dooley KL, Driggers JC, Dupej P, Dwyer SE, Etzel T, Evans TM, Feicht J, Fernandez-Galiana A, Frolov VV, Fulda P, Fyffe M, Giaime JA, Giardina KD, Godwin P, Goetz E, Gras S, Gray C, Gray R, Green AC, Gustafson EK, Gustafson R, Hall ED, Hanks J, Hanson J, Hardwick T, Hasskew RK, Heintze MC, Helmling-Cornell AF, Holland NA, Jones JD, Kandhasamy S, Karki S, Kasprzack M, Kawabe K, Kijbunchoo N, King PJ, Kissel JS, Kumar R, Landry M, Lane BB, Lantz B, Laxen M, Lecoeuche YK, Leviton J, Liu J, Lormand M, Lundgren AP, Macas R, MacInnis M, Macleod DM, Mansell GL, Márka S, Márka Z, Martynov DV, Mason K, Massinger TJ, Matichard F, Mavalvala N, McCarthy R, McClelland DE, McCormick S, McCuller L, McIver J, McRae T, Mendell G, Merfeld K, Merilh EL, Meylahn F, Mistry T, Mittleman R, Moreno G, Mow-Lowry CM, Mozzon S, Mullavey A, Nelson TJN, Nguyen P, Nuttall LK, Oberling J, Oram RJ, Osthelder C, Ottaway DJ, Overmier H, Palamos JR, Parker W, Payne E, Pele A, Penhorwood R, Perez CJ, Pirello M, Radkins H, Ramirez KE, Richardson JW, Riles K, Robertson NA, Rollins JG, Romel CL, Romie JH, Ross MP, Ryan K, Sadecki T, Sanchez EJ, Sanchez LE, Saravanan TR, Savage RL, Schaetzl D, Schnabel R, Schofield RMS, Schwartz E, Sellers D, Shaffer T, Sigg D, Slagmolen BJJ, Smith JR, Soni S, Sorazu B, Spencer AP, Strain KA, Sun L, Szczepańczyk MJ, Thomas M, Thomas P, Thorne KA, Toland K, Torrie CI, Traylor G, Tse M, Urban AL, Vajente G, Valdes G, Vander-Hyde DC, Veitch PJ, Venkateswara K, Venugopalan G, Viets AD, Vo T, Vorvick C, Wade M, Ward RL, Warner J, Weaver B, Weiss R, Whittle C, Willke B, Wipf CC, Xiao L, Yu H, Yu H, Zhang L, Zucker ME, Zweizig J. Point Absorber Limits to Future Gravitational-Wave Detectors. PHYSICAL REVIEW LETTERS 2021; 127:241102. [PMID: 34951783 DOI: 10.1103/physrevlett.127.241102] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/22/2021] [Accepted: 10/27/2021] [Indexed: 06/14/2023]
Abstract
High-quality optical resonant cavities require low optical loss, typically on the scale of parts per million. However, unintended micron-scale contaminants on the resonator mirrors that absorb the light circulating in the cavity can deform the surface thermoelastically and thus increase losses by scattering light out of the resonant mode. The point absorber effect is a limiting factor in some high-power cavity experiments, for example, the Advanced LIGO gravitational-wave detector. In this Letter, we present a general approach to the point absorber effect from first principles and simulate its contribution to the increased scattering. The achievable circulating power in current and future gravitational-wave detectors is calculated statistically given different point absorber configurations. Our formulation is further confirmed experimentally in comparison with the scattered power in the arm cavity of Advanced LIGO measured by in situ photodiodes. The understanding presented here provides an important tool in the global effort to design future gravitational-wave detectors that support high optical power and thus reduce quantum noise.
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Wieland J, Almodallal Y, Martin N, Mannion S, Nguyen P, Jatoi A. Understanding “Patient Refuses” Among 90+ Year Old Patients with Cancer or Presumed Cancer. J Geriatr Oncol 2021. [DOI: 10.1016/s1879-4068(21)00377-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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Siguret V, Boissier E, Maistre ED, Gouin-Thibault I, James C, Lasne D, Mouton C, Godon A, Nguyen P, Lecompte T, Ajzenberg N, Bauters A, Béjot Y, Crassard I, Dahmani B, Desconclois C, Flaujac C, Frère C, Godier A, Gruel Y, Hézard N, Jourdi G, Kuadjovi C, Laurichesse M, Mémier V, Mourey G, Reiner P, Tardy B, Toussaint-Hacquard M. GFHT Proposals On The Practical Use Of Argatroban - With Specifics Regarding Vaccine-Induced Immune Thrombotic Thrombocytopaenia (VITT). Anaesth Crit Care Pain Med 2021; 40:100963. [PMID: 34673303 DOI: 10.1016/j.accpm.2021.100963] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/28/2021] [Accepted: 10/01/2021] [Indexed: 11/29/2022]
Abstract
Argatroban is a direct anti-IIa (thrombin) anticoagulant, administered as a continuous intravenous infusion; it has been approved in many countries for the anticoagulant management of heparin-induced thrombocytopaenia (HIT). Argatroban was recently proposed as the non-heparin anticoagulant of choice for the management of patients diagnosed with Vaccine-induced Immune Thrombotic Thrombocytopaenia (VITT). Immunoglobulins are also promptly intravenously administered in order to rapidly improve platelet count; concomitant therapy with steroids is also often considered. An ad hoc committee of the French Working Group on Haemostasis and Thrombosis members has worked on updated and detailed proposals regarding the management of anticoagulation with argatroban, based on previously released guidance for HIT, and adapted for VITT. In case of VITT, the initial dose to be preferred is 1.0 µg x kg-1 x min-1, with further dose-adjustments based on iterative and frequent clinical and laboratory assessments. It is strongly advised to involve a health practitioner experienced in the management of difficult cases in haemostasis. The first laboratory assessment should be performed 4 hours after the initiation of argatroban infusion, with further controls at 2-4-hour intervals until steady state, and at least once daily thereafter. Importantly, full anticoagulation should be rapidly achieved in case of widespread thrombosis. Cerebral vein thrombosis (which is typical of VITT) should not call for an overly cautious anticoagulation scheme. Argatroban administration requires baseline laboratory assessment and should rely on an anti-IIa assay to derive argatroban plasma levels using a dedicated calibration, with a target range between 0.5 and 1.5 µg/mL. Target argatroban plasma levels can be refined based on meticulous appraisal of risk factors for bleeding and thrombosis, on frequent reassessments of clinical status with appropriate vascular imaging, and on the changes in daily platelet counts. Regarding the use of aPTT, baseline value and possible causes for alterations of the clotting time must be taken into account. Specifically, in case of VITT, an aPTT ratio (patient's / mean normal clotting time) between 1.5 and 2.5 is suggested, to be refined according to the sensitivity of the reagent to the effect of a direct thrombin inhibitor. The sole use of aPTT is discouraged: one has to resort to a periodical check with an anti-IIa assay at least, with the help of a specialised laboratory if necessary. Dose modifications should proceed in a stepwise manner with 0.1 to 0.2 µg x kg-1 x min-1 up- or downward changes, taking into account the initial dose, laboratory results, and the whole individual setting. Nomograms are available to adjust the infusion rate. Haemoglobin level, platelet count, fibrinogen plasma level and liver tests should be periodically checked, depending on the clinical status, the more so when unstable.
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Maier AD, Meddis A, Haslund-Vinding J, Mirian C, Areskeviciute A, Nguyen P, Westergaard C, Melchior LC, Munch TN, Skjøth-Rasmussen J, Poulsgaard L, Ziebell M, Bartek Jr J, Broholm H, Poulsen FR, Gerds TA, Scheie D, Mathiesen T. P04.05 Targeted Gene-Expression analysis during malignant transformation in primary and secondary malignant meningioma. Neuro Oncol 2021. [DOI: 10.1093/neuonc/noab180.062] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
Abstract
BACKGROUND
Malignant meningiomas comprise 2–5% of all meningiomas. The process of malignant transformation when benign meningiomas (WHO grade I-II) become malignant (WHO grade III) has not previously been investigated in sequential tumour surgeries. Upregulation of FOXM1 expression and DREAM-complex repression have shown phenotypical subgroups correlating with WHO grade and aggressiveness. We investigated the RNA expression of 30 genes central to meningioma biology and 770 genes involved in neuroinflammatory pathways in primary and secondary malignant meningioma patients who underwent one to several operations.
MATERIALS AND METHODS
We identified a cohort of consecutive malignant meningioma patients treated at Rigshospitalet, Copenhagen from 2000–2020 (n=51) and gathered their malignant tumours and previous WHO grade I/II tumours. The malignant cohort (MC) was counter matched with a benign cohort (BC) where patients had no recurrences during follow-up. RNA expression signatures from 140 samples from the MC and 51 samples from the BC were analysed with the Nanostring Neuroinflammation panel customized with 30 genes known to be relevant in meningioma phenotypes.
RESULTS
49% of MC patients had a previous grade I/II meningioma making them secondary malignant meningioma patients. Progression-free survival calculated from first malignant surgery to first recurrence or death showed no significant difference in the primary vs. secondary patients. Preliminary results of single-gene analysis of MC tumours showed FOXM1, MYBL2, TOP2A, BIRC5 expression was higher in WHO grade III samples. Gene-expression signatures in the individual patients and gene ontology enrichment analyses are in process.
CONCLUSIONS
FOXM1, MYBL2, TOP2A, BIRC5 RNA expression levels seem to rise during malignant progression across patients. Gene-expression analysis using the Nanostring technology is feasible and a potentially powerful tool to distinguish meningiomas prone to malignant transformation from truly benign meningiomas.
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Teo M, McBride S, Gopalan A, Benoliel H, Eastham J, Goh A, Szmulewitz R, Morgans A, Bubley G, Gupta S, Klein E, Nguyen P, Kibel A, Wagner A, Kaplan I, Eggener S, Liauw S, Taplin M, Scher H. 637P Biochemical response (PSA0) and testosterone (T) recovery in Metacure, a multi-arm multi-modality (MM) therapy (tx) for very high risk localized (HRL) and low volume metastatic (LVM) prostatic adenocarcinoma. Ann Oncol 2021. [DOI: 10.1016/j.annonc.2021.08.1150] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022] Open
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Tardy-Poncet B, de Maistre E, Pouplard C, Presles E, Alhenc-Gelas M, Lasne D, Horellou MH, Mouton C, Serre-Sapin A, Bauters A, Nguyen P, Mullier F, Perrin J, Le Gal G, Morange PE, Grunebaum L, Lillo-Le Louet A, Elalamy I, Gruel Y, Greinacher A, Lecompte T, Tardy B. Heparin-induced thrombocytopenia: Construction of a pretest diagnostic score derived from the analysis of a prospective multinational database, with internal validation. J Thromb Haemost 2021; 19:1959-1972. [PMID: 33872452 DOI: 10.1111/jth.15344] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/01/2020] [Revised: 04/09/2021] [Accepted: 04/09/2021] [Indexed: 12/18/2022]
Abstract
BACKGROUND Diagnosis of heparin-induced thrombocytopenia (HIT) requires pretest probability assessment and dedicated laboratory assays. OBJECTIVE To develop a pretest score for HIT. DESIGN Observational; analysis of prospectively collected data of hospitalized patients suspected with HIT (ClinicalTrials.gov NCT00748839). SETTING Thirty-one tertiary hospitals in France, Switzerland, and Belgium. PATIENTS Patients tested for HIT antibodies (2280 evaluable), randomly allocated to derivation and validation cohorts. MEASUREMENTS Independent adjudicators diagnosed HIT based on the prospectively collected data and serotonin release assay results. RESULTS Heparin-induced thrombocytopenia was diagnosed in 234 (14.7%) and 99 (14.5%) patients in the two cohorts. Eight features were associated with HIT (in brackets, points assigned for score calculation of the score): unfractionated heparin (1); therapeutic-dose heparin (1); cardiopulmonary bypass (cardiac surgery) (2); major trauma (3); 5- to 21-day interval from anticoagulation initiation to suspicion of HIT (4); ≥40% decrease in platelet count over ≤6 days (3); thrombotic event, arterial (3) or venous (3). The C-statistic was 0.79 (95% CI, 0.76-0.82). In the validation cohort, the area under the receiver operating characteristic curve was 0.77 (95% CI, 0.74-0.80). Three groups of scores were defined; HIT prevalence reached almost 30% in the high-probability group. LIMITATION The performance of the score may depend on settings and practices. CONCLUSION The objective, easy-to-collect, clinical features of HIT we evidenced were incorporated into a pretest score, which may guide clinical decisions regarding diagnostic testing and anticoagulation.
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Godon A, Tacquard CA, Mansour A, Garrigue D, Nguyen P, Lasne D, Testa S, Levy JH, Albaladejo P, Gruel Y, Susen S, Godier A. Prevention of venous thromboembolism and haemostasis monitoring in patients with COVID-19: Updated proposals (April 2021): From the French working group on perioperative haemostasis (GIHP) and the French study group on thrombosis and haemostasis (GFHT), in collaboration with the French society of anaesthesia and intensive care (SFAR). Anaesth Crit Care Pain Med 2021; 40:100919. [PMID: 34182166 PMCID: PMC8233055 DOI: 10.1016/j.accpm.2021.100919] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/16/2021] [Accepted: 06/16/2021] [Indexed: 12/24/2022]
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Douxfils J, Favresse J, Dogné JM, Lecompte T, Susen S, Cordonnier C, Lebreton A, Gosselin R, Sié P, Pernod G, Gruel Y, Nguyen P, Vayne C, Mullier F. Hypotheses behind the very rare cases of thrombosis with thrombocytopenia syndrome after SARS-CoV-2 vaccination. Thromb Res 2021; 203:163-171. [PMID: 34029848 PMCID: PMC8123522 DOI: 10.1016/j.thromres.2021.05.010] [Citation(s) in RCA: 42] [Impact Index Per Article: 14.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/25/2021] [Revised: 05/07/2021] [Accepted: 05/08/2021] [Indexed: 01/17/2023]
Abstract
As of 4 April 2021, a total of 169 cases of cerebral venous sinus thrombosis (CVST) and 53 cases of splanchnic vein thrombosis were reported to EudraVigilance among around 34 million people vaccinated in the European Economic Area and United Kingdom with COVID-19 Vaccine AstraZeneca, a chimpanzee adenoviral vector (ChAdOx1) encoding the spike protein antigen of the SARS-CoV-2 virus. The first report of the European Medicines Agency gathering data on 20 million people vaccinated with Vaxzevria® in the UK and the EEA concluded that the number of post-vaccination cases with thromboembolic events as a whole reported to EudraVigilance in relation to the number of people vaccinated was lower than the estimated rate of such events in the general population. However, the EMA's Pharmacovigilance Risk Assessment Committee concluded that unusual thromboses with low blood platelets should be listed as very rare side effects of Vaxzevria®, pointing to a possible link. The same issue was identified with the COVID-19 Vaccine Janssen (Ad26.COV2.S). Currently, there is still a sharp contrast between the clinical or experimental data reported in the literature on COVID-19 and the scarcity of data on the unusual thrombotic events observed after the vaccination with these vaccines. Different hypotheses might support these observations and should trigger further in vitro and ex vivo investigations. Specialized studies were needed to fully understand the potential relationship between vaccination and possible risk factors in order to implement risk minimization strategies.
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Whittle C, Hall ED, Dwyer S, Mavalvala N, Sudhir V, Abbott R, Ananyeva A, Austin C, Barsotti L, Betzwieser J, Blair CD, Brooks AF, Brown DD, Buikema A, Cahillane C, Driggers JC, Effler A, Fernandez-Galiana A, Fritschel P, Frolov VV, Hardwick T, Kasprzack M, Kawabe K, Kijbunchoo N, Kissel JS, Mansell GL, Matichard F, McCuller L, McRae T, Mullavey A, Pele A, Schofield RMS, Sigg D, Tse M, Vajente G, Vander-Hyde DC, Yu H, Yu H, Adams C, Adhikari RX, Appert S, Arai K, Areeda JS, Asali Y, Aston SM, Baer AM, Ball M, Ballmer SW, Banagiri S, Barker D, Bartlett J, Berger BK, Bhattacharjee D, Billingsley G, Biscans S, Blair RM, Bode N, Booker P, Bork R, Bramley A, Cannon KC, Chen X, Ciobanu AA, Clara F, Compton CM, Cooper SJ, Corley KR, Countryman ST, Covas PB, Coyne DC, Datrier LEH, Davis D, Di Fronzo C, Dooley KL, Dupej P, Etzel T, Evans M, Evans TM, Feicht J, Fulda P, Fyffe M, Giaime JA, Giardina KD, Godwin P, Goetz E, Gras S, Gray C, Gray R, Green AC, Gustafson EK, Gustafson R, Hanks J, Hanson J, Hasskew RK, Heintze MC, Helmling-Cornell AF, Holland NA, Jones JD, Kandhasamy S, Karki S, King PJ, Kumar R, Landry M, Lane BB, Lantz B, Laxen M, Lecoeuche YK, Leviton J, Liu J, Lormand M, Lundgren AP, Macas R, MacInnis M, Macleod DM, Márka S, Márka Z, Martynov DV, Mason K, Massinger TJ, McCarthy R, McClelland DE, McCormick S, McIver J, Mendell G, Merfeld K, Merilh EL, Meylahn F, Mistry T, Mittleman R, Moreno G, Mow-Lowry CM, Mozzon S, Nelson TJN, Nguyen P, Nuttall LK, Oberling J, Oram RJ, Osthelder C, Ottaway DJ, Overmier H, Palamos JR, Parker W, Payne E, Penhorwood R, Perez CJ, Pirello M, Radkins H, Ramirez KE, Richardson JW, Riles K, Robertson NA, Rollins JG, Romel CL, Romie JH, Ross MP, Ryan K, Sadecki T, Sanchez EJ, Sanchez LE, Saravanan TR, Savage RL, Schaetz D, Schnabel R, Schwartz E, Sellers D, Shaffer T, Slagmolen BJJ, Smith JR, Soni S, Sorazu B, Spencer AP, Strain KA, Sun L, Szczepańczyk MJ, Thomas M, Thomas P, Thorne KA, Toland K, Torrie CI, Traylor G, Urban AL, Valdes G, Veitch PJ, Venkateswara K, Venugopalan G, Viets AD, Vo T, Vorvick C, Wade M, Ward RL, Warner J, Weaver B, Weiss R, Willke B, Wipf CC, Xiao L, Yamamoto H, Zhang L, Zucker ME, Zweizig J. Approaching the motional ground state of a 10-kg object. Science 2021; 372:1333-1336. [PMID: 34140386 DOI: 10.1126/science.abh2634] [Citation(s) in RCA: 19] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/26/2021] [Accepted: 05/05/2021] [Indexed: 11/02/2022]
Abstract
The motion of a mechanical object, even a human-sized object, should be governed by the rules of quantum mechanics. Coaxing them into a quantum state is, however, difficult because the thermal environment masks any quantum signature of the object's motion. The thermal environment also masks the effects of proposed modifications of quantum mechanics at large mass scales. We prepared the center-of-mass motion of a 10-kilogram mechanical oscillator in a state with an average phonon occupation of 10.8. The reduction in temperature, from room temperature to 77 nanokelvin, is commensurate with an 11 orders-of-magnitude suppression of quantum back-action by feedback and a 13 orders-of-magnitude increase in the mass of an object prepared close to its motional ground state. Our approach will enable the possibility of probing gravity on massive quantum systems.
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