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Nassif E, Blay JY, Bahleda R, Dufresne A, Mehdi B, Ray-Coquard I, Pautier P, Leary A, Levy A, Le Pechoux C, Honoré C, Mir O, Massard C, Le Cesne A. 1551P Efficacy of early phase trials for soft-tissue sarcoma patients: The Centre Léon Bérard and Gustave Roussy experience. Ann Oncol 2021. [DOI: 10.1016/j.annonc.2021.08.881] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022] Open
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Levy A. SP-0450 The microbiome: An emerging concept impacting the tumour and normal tissue with implications for treatment personalisation. Radiother Oncol 2021. [DOI: 10.1016/s0167-8140(21)08587-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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Le Pechoux C, Levy A. SP-0665 Multi-modality treatment of soft tissue sarcoma. Radiother Oncol 2021. [DOI: 10.1016/s0167-8140(21)08649-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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Murray P, McCracken M, Levy A, Lathi R, Monseur B. FAMILY BUILDING THROUGH “EMBRYO ADOPTION”: RECIPIENT QUALIFICATIONS, ORGANIZATION CHARACTERISTICS, AND LGBTQ+/SINGLE WEBSITE CONTENT. Fertil Steril 2021. [DOI: 10.1016/j.fertnstert.2021.05.044] [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]
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Pettersen G, Gauvin F, Robitaille N, Sansregret A, Lesage S, Levy A. Massive Hemorrhage Protocol Application and Teamwork Skills. AEM EDUCATION AND TRAINING 2021; 5:e10513. [PMID: 34027278 PMCID: PMC8122128 DOI: 10.1002/aet2.10513] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/26/2020] [Revised: 07/06/2020] [Accepted: 07/22/2020] [Indexed: 06/12/2023]
Abstract
OBJECTIVE Massive hemorrhages (MHs) are rare but serious complications of pediatric trauma and obstetric cases. This study aimed to evaluate the impact of interprofessional simulation to improve adherence to a MH protocol (MHP), teamwork skills and confidence levels during a hemorrhagic crisis situation.Methods: This was a pre-post experimental study conducted at a tertiary care mother-child simulation center. Pediatric emergency and obstetric teams were submitted to simulated trauma and postpartum MH scenarios. Training consisted of two case scenarios followed by debriefing sessions and a lecture on the MHP. The primary outcome was adherence to MHP processes (checklist) measured prior to and 2 weeks following training sessions. Other outcomes were the measure of teamwork skills (Mayo High Performance Teamwork Scale) and confidence of the participants. RESULTS Sixty-two health care professionals were involved in eight interprofessional teams. Mean scores for adherence to the MHP improved from 19.1 in the pretraining phase to 25.8 in the posttraining phase (difference of 6.7; 95% confidence interval [CI] = 4.4 to 8.9). Mean scores pertaining to teamwork skills also improved significantly between pre- and posttraining phases (difference = 3.9; 95% CI = 1.5 to 6.4). Confidence questionnaires showed significant improvements in the posttraining phase (difference = 6.9; 95% CI = 5.3 to 8.3). CONCLUSIONS Targeted training involving simulation and protocol review improved participant adherence to MHP processes and teamwork skills. Confidence levels improved across all disciplines.
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Levy A, Roux C, Mercier O, Issard J, Botticella A, Barlesi F, Le Péchoux C. [Radiotherapy for oligometastatic non-small cell lung cancer patients]. Cancer Radiother 2021; 25:517-522. [PMID: 34175225 DOI: 10.1016/j.canrad.2021.06.011] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2021] [Accepted: 06/05/2021] [Indexed: 10/21/2022]
Abstract
The oligometastatic disease concept suggests that patients with a limited number of metastases have a favorable prognosis. Radical local treatment of oligometastatic patients has then increased given developments in imaging (mainly positron emission tomography and brain magnetic resonance imaging) and access to effective and better tolerated treatments. Stereotactic radiotherapy has the advantage of being noninvasive, allowing a good rate of local control and a limited number of side effects. A better definition of oligometastatic disease, particularly for non-small cell lung cancer (NSCLC), has recently been published. For patients with NSCLC, two randomized phase II trials also suggested that the addition of a radical local treatment results in encouraging survival data, with a good safety profile. A single-arm phase II finally showed a benefit when combining a radical local treatment with an anti-PD1 immunotherapy. This review describes the definitions of oligometastatic disease, the main prospective findings including radiation therapy, and prospects for oligometastatic NSCLC patients.
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Levy A, Knoeri J, Borderie M, Leveziel L, Borderie V. Therapeutic management of post-traumatic epithelial ingrowth in a 10-year-old boy. J Fr Ophtalmol 2021; 44:e471-e473. [PMID: 33934904 DOI: 10.1016/j.jfo.2020.11.020] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/29/2020] [Accepted: 11/18/2020] [Indexed: 11/26/2022]
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Topjian AA, Raymond TT, Atkins D, Chan M, Duff JP, Joyner BL, Lasa JJ, Lavonas EJ, Levy A, Mahgoub M, Meckler GD, Roberts KE, Sutton RM, Schexnayder SM. Part 4: Pediatric Basic and Advanced Life Support 2020 American Heart Association Guidelines for Cardiopulmonary Resuscitation and Emergency Cardiovascular Care. Pediatrics 2021; 147:peds.2020-038505D. [PMID: 33087552 DOI: 10.1542/peds.2020-038505d] [Citation(s) in RCA: 29] [Impact Index Per Article: 9.7] [Reference Citation Analysis] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/24/2022] Open
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François T, Tabone L, Levy A, Seguin LA, Touré T, Aubin CE, Jouvet P. Simulation-Based Rapid Development and Implementation of a Novel Barrier Enclosure for Use in COVID-19 Patients: The SplashGuard CG. Crit Care Res Pract 2020; 2020:3842506. [PMID: 33381311 PMCID: PMC7747007 DOI: 10.1155/2020/3842506] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2020] [Accepted: 12/04/2020] [Indexed: 01/25/2023] Open
Abstract
BACKGROUND The current COVID-19 pandemic has resulted in over 54,800,000 SARS-CoV-2 infections worldwide with a mortality rate of around 2.5%. As observed in other airborne viral infections such as influenza and SARS-CoV-1, healthcare workers are at high risk for infection when performing aerosol-generating medical procedures (AGMP). Additionally, the threats of a global shortage of standard personal protective equipment (PPE) prompted many healthcare workers to explore alternative protective enclosures, such as the "aerosol box" invented by a Taiwanese anesthetist. Our study includes the design process of a protective barrier enclosure and its subsequent clinical implementation in the management of critically ill adults and children infected with SARS-CoV-2. METHODS AND RESULTS The barrier enclosure was designed for use in our tertiary care facility and named "SplashGuard CG" (CG for Care Givers). The device has been adapted using a multi- and interdisciplinary approach, with collaboration between physicians, respiratory therapists, nurses, and biomechanical engineers. Computer-aided design and simulation sessions throughout the entire process facilitated the rapid and safe implementation of the SplashGuard CG in different settings (intensive care unit, emergency department, and the operating room) during AGMPs such as bag-valve-mask ventilation, nasopharyngeal suctioning, intubation and extubation, and noninvasive ventilation. Indications for use and anticipatory precautions were communicated to all healthcare workers using the SplashGuard CG. The entire process was completed within one month. CONCLUSION The rapid design, development, and clinical implementation of a new barrier enclosure, the "SplashGuard CG," was feasible in this time of crisis thanks to close collaboration between medical and engineering teams and the use of recurring simulation sessions to test and improve the initial prototypes. Following this accelerated process, it is necessary to maintain team skills, monitor any undesirable effects, and evaluate and continuously improve this new device.
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Buyck M, Shayan Y, Gravel J, Hunt EA, Cheng A, Levy A. CPR coaching during cardiac arrest improves adherence to PALS guidelines: a prospective, simulation-based trial. Resusc Plus 2020; 5:100058. [PMID: 34223330 PMCID: PMC8244489 DOI: 10.1016/j.resplu.2020.100058] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2020] [Revised: 11/12/2020] [Accepted: 11/20/2020] [Indexed: 10/31/2022] Open
Abstract
Aim Recent studies have shown that the integration of a trained cardiopulmonary resuscitation (CPR) Coach during resuscitation enhances the quality of CPR during simulated paediatric cardiac arrest. The objective of our study was to evaluate the effect of a CPR Coach on adherence to Paediatric Advanced Life Support (PALS) guidelines during simulated paediatric cardiac arrest. Methods This was a secondary analysis of data collected from a multicentre randomized controlled trial assessing the quality of CPR in teams with and without a CPR Coach. Forty paediatric resuscitation teams were equally randomized into 2 groups (with or without a CPR Coach). The primary outcome was adherence to PALS guidelines during a simulated paediatric cardiac arrest case as measured by the Clinical Performance Tool (CPT). Video recordings were assigned to 2 pairs of expert raters. Raters were trained to independently score performances using the tool. Results The reliability of the rating was adequate for the Clinical Performance Tool with an intraclass coefficients of 0.67 (95%CI: 0.22 to 0.84). Performance scores of the different teams varied between 51 and 84 points on the Clinical Performance Tool with a mean score of 70. Teams with a CPR Coach demonstrated better adherence to PALS guidelines (i.e. CPT score 73 points) compared to teams without a CPR Coach (68 points, difference 5 points; 95%CI: 1.0-9.3, p = 0.016). Conclusion In addition to improving CPR quality, the presence of a CPR Coach improves adherence to PALS guidelines during simulated paediatric cardiac arrests when compared with teams without a CPR Coach.
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Buyck M, Levy A, Tabone L, Aubin CE, Jouvet P, Baudin F. Pediatric barrier enclosure for nasopharyngeal suctioning during Covid-19 pandemic: A simulation based-study. Am J Emerg Med 2020; 45:608-610. [PMID: 33380356 PMCID: PMC7832753 DOI: 10.1016/j.ajem.2020.11.077] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/26/2020] [Revised: 11/30/2020] [Accepted: 11/30/2020] [Indexed: 11/18/2022] Open
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Levy A, Knoeri J, Borderie V. [Ciprofloxacin deposits under an amniotic membrane graft]. J Fr Ophtalmol 2020; 44:454-455. [PMID: 33308838 DOI: 10.1016/j.jfo.2020.05.014] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/20/2020] [Revised: 05/01/2020] [Accepted: 05/05/2020] [Indexed: 11/15/2022]
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Olejarz N, Fertita L, Levy A, Bodemer C, Molina T, Fraitag S, Leclerc Mercier S. Erythème annulaire du jeune enfant : penser à l’érythème neutrophilique figuré. Ann Dermatol Venereol 2020. [DOI: 10.1016/j.annder.2020.09.301] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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Larose G, Levy A, Bailey B, Cummins-McManus B, Lebel D, Gravel J. Estimating the Weight of Children During Simulated Emergency Situations Using the Broselow Tape: Are We Underestimating the Risks of Errors? Pediatr Emerg Care 2020; 36:e704-e708. [PMID: 30247454 DOI: 10.1097/pec.0000000000001581] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
Abstract
OBJECTIVE The objective of this study was to evaluate whether residents can accurately estimate children's weight using the Broselow tape. METHOD We conducted a preplanned secondary analysis from an experimental trial. Participants were residents in pediatrics, family medicine, and emergency medicine rotating in the ED. Residents were randomly assigned to 2 sets of paired scenarios during 2 sessions. They were asked to estimate the weight of a manikin using the Broselow tape at the beginning of each scenario. The first scenario from the initial session and the last scenario from the second session were used for the current study. The primary analysis was the proportion of participants who accurately estimated manikin weight within a 10% margin of error. RESULTS Forty residents were recruited. Thirty-two (80%) reported knowledge of the Broselow tape and 13 (32.5%) reported previous use. Weight estimation was accurate in 60% (24/40; 95% confidence interval [CI], 45%-74%) during the first scenarios. Error in weight estimation differed by greater than 25% in 28% (11/40). Error in estimation was not associated with previous knowledge (odds ratio, 6.2; 95% CI, 0.68-56) or previous use (odds ratio, 0.9; 95% CI, 0.23-3.5) of the Broselow tape. In the last scenario, 88% accurately estimated manikin weight (35/40; 95% CI, 73%-95%). CONCLUSIONS Although most residents reported knowledge of the Broselow tape, 40% made erroneous weight estimations by at least 10% with the first use in this simulation study. With repeated use, they improved significantly over time. Teaching appropriate use of the Broselow tape should be part of residency-training curricula and pediatric advanced life support course.
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Kaiser D, Bohelay G, Bubien V, Levy A, Ostojic A, Longy M, Caux F. Macrodactylie isolée en lien avec une mutation somatique en mosaïque du gène PIK3CA. Ann Dermatol Venereol 2020. [DOI: 10.1016/j.annder.2020.09.391] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Topjian AA, Raymond TT, Atkins D, Chan M, Duff JP, Joyner BL, Lasa JJ, Lavonas EJ, Levy A, Mahgoub M, Meckler GD, Roberts KE, Sutton RM, Schexnayder SM. Part 4: Pediatric Basic and Advanced Life Support: 2020 American Heart Association Guidelines for Cardiopulmonary Resuscitation and Emergency Cardiovascular Care. Circulation 2020; 142:S469-S523. [PMID: 33081526 DOI: 10.1161/cir.0000000000000901] [Citation(s) in RCA: 198] [Impact Index Per Article: 49.5] [Reference Citation Analysis] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
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Berg KM, Cheng A, Panchal AR, Topjian AA, Aziz K, Bhanji F, Bigham BL, Hirsch KG, Hoover AV, Kurz MC, Levy A, Lin Y, Magid DJ, Mahgoub M, Peberdy MA, Rodriguez AJ, Sasson C, Lavonas EJ. Part 7: Systems of Care: 2020 American Heart Association Guidelines for Cardiopulmonary Resuscitation and Emergency Cardiovascular Care. Circulation 2020; 142:S580-S604. [PMID: 33081524 DOI: 10.1161/cir.0000000000000899] [Citation(s) in RCA: 96] [Impact Index Per Article: 24.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
Survival after cardiac arrest requires an integrated system of people, training, equipment, and organizations working together to achieve a common goal. Part 7 of the 2020 American Heart Association Guidelines for Cardiopulmonary Resuscitation and Emergency Cardiovascular Care focuses on systems of care, with an emphasis on elements that are relevant to a broad range of resuscitation situations. Previous systems of care guidelines have identified a Chain of Survival, beginning with prevention and early identification of cardiac arrest and proceeding through resuscitation to post-cardiac arrest care. This concept is reinforced by the addition of recovery as an important stage in cardiac arrest survival. Debriefing and other quality improvement strategies were previously mentioned and are now emphasized. Specific to out-of-hospital cardiac arrest, this Part contains recommendations about community initiatives to promote cardiac arrest recognition, cardiopulmonary resuscitation, public access defibrillation, mobile phone technologies to summon first responders, and an enhanced role for emergency telecommunicators. Germane to in-hospital cardiac arrest are recommendations about the recognition and stabilization of hospital patients at risk for developing cardiac arrest. This Part also includes recommendations about clinical debriefing, transport to specialized cardiac arrest centers, organ donation, and performance measurement across the continuum of resuscitation situations.
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Topjian A, Aziz K, Kamath-Rayne BD, Atkins DL, Becker L, Berg RA, Bradley SM, Bhanji F, Brooks S, Chan M, Chan P, Cheng A, de Caen A, Duff JP, Escobedo M, Flores GE, Fuchs S, Girotra S, Hsu A, Joyner BL, Kleinman M, Lasa JJ, Lee HC, Lehotzky RE, Levy A, Mancini ME, McBride ME, Meckler G, Merchant RM, Morgan RW, Nadkarni V, Panchal AR, Peberdy MA, Raymond T, Roberts K, Sasson C, Schexnayder SM, Sutton RM, Terry M, Walsh B, Wang DS, Zelop CM, Edelson DP. Interim Guidance for Basic and Advanced Life Support in Children and Neonates With Suspected or Confirmed COVID-19. Pediatrics 2020:e20201405. [PMID: 32366608 DOI: 10.1542/peds.2020-1405] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/24/2022] Open
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Levy A, Doyen J, Botticella A, Bourdais R, Achkar S, Giraud P, Du C, Naltet C, Lavaud P, Besse B, Pradère P, Mercier O, Caramella C, Planchard D, Deutsch E, Le Péchoux C. [Role of immunotherapy in locally advanced non-small cell lung cancer]. Cancer Radiother 2020; 24:67-72. [PMID: 32037126 DOI: 10.1016/j.canrad.2019.09.007] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/26/2019] [Revised: 09/02/2019] [Accepted: 09/11/2019] [Indexed: 01/26/2023]
Abstract
Concomitant radiochemotherapy has been the standard of care for unresectable stage III non-small cell lung cancer (NSCLC), irrespective of histological sub-type or molecular characteristics. Currently, only 15-30 % of patients are alive five years after radiochemotherapy, and this figure remains largely unchanged despite multiple phase III randomised trials. In recent years, immune-checkpoint blockades with anti-PD-(L)1 have revolutionised the care of metastatic NSCLC, becoming the standard front- and second-line strategy. Several preclinical studies reported an increased tumour antigen release, improved antigen presentation, and T-cell infiltration in irradiated tumours. Immunotherapy has therefore recently been evaluated for patients with locally advanced stage III NSCLC. Following the PACIFIC trial, the anti-PD-L1 durvalumab antibody has emerged as a new standard consolidative treatment for patients with unresectable stage III NSCLC whose disease has not progressed following concomitant platinum-based chemoradiotherapy. Immunoradiotherapy therefore appears to be a promising association in patients with localised NSCLC. Many trials are currently evaluating the value of concomitant immunotherapy and chemoradiotherapy and/or consolidative chemotherapy with immunotherapy in patients with locally advanced unresectable NSCLC.
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Levi-Zada A, Levy A, Rempoulakis P, Fefer D, Steiner S, Gazit Y, Nestel D, Yuval B, Byers JA. Diel rhythm of volatile emissions of males and females of the peach fruit fly Bactrocera zonata. JOURNAL OF INSECT PHYSIOLOGY 2020; 120:103970. [PMID: 31704255 DOI: 10.1016/j.jinsphys.2019.103970] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/01/2019] [Revised: 10/19/2019] [Accepted: 11/01/2019] [Indexed: 06/10/2023]
Abstract
Fruit flies in the genus Bactrocera are among the most destructive insect pests of fruits and vegetables throughout the world. A number of studies have identified volatiles from fruit flies, but few reports have demonstrated behavioral effects or sensitivities of fly antennae to these compounds. We applied a recently developed method of automated headspace analysis using SPME (Solid Phase Microextraction) fibers and GC-MS (gas chromatography mass spectrometry), termed SSGA, to reveal volatiles specific to each sex of B. zonata that are emitted in a diel periodicity. The volatiles released primarily at dusk were identified by GC-MS and chemical syntheses as several spiroacetals, pyrazines, and ethyl esters. Solvent extraction of male rectal glands or airborne collections from each sex, followed by GC-MS, showed that certain of the volatiles increase or decrease in quantity sex-specifically with age of the flies. Electroantennographic (EAG) analysis of dose-response indicates differences in sensitivities of male and female antenna to the various volatiles. Our study provides a comprehensive analysis of the volatile chemicals produced and released by B. zonata and their antennal responses. The possible pheromone and semiochemical roles of the various volatiles released by each sex and the difficulties of establishing behavioral functions are discussed.
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Kervarrec T, Aljundi M, Appenzeller S, Samimi M, Maubec E, Cribier B, Berthon P, Deschamps L, Levy A, Bousquet G, Touzé A, Guyétant S, Schrama D, Houben R. Histogenèse du carcinome à cellules de Merkel. Ann Dermatol Venereol 2019. [DOI: 10.1016/j.annder.2019.09.077] [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]
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Araujo GS, Vilasboa A, Britto MR, Bernardi G, von der Heyden S, Levy A, Floeter SR. Phylogeny of the comb-tooth blenny genus Scartella (Blenniiformes: Blenniidae) reveals several cryptic lineages and a trans-Atlantic relationship. Zool J Linn Soc 2019. [DOI: 10.1093/zoolinnean/zlz142] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Abstract
AbstractHere we present the first phylogeny of the genus Scartella based on mitochondrial data. The analysis strongly corroborates the validity of all species of the genus and shows that Scartella cristata, a species with a disjunct distribution, is a lineage complex comprising five clades: two in Caribbean waters, another in the East Atlantic/Mediterranean and two in Brazil. Brazilian clades occur in sympatry from Rio de Janeiro to Rio Grande do Sul states (southern Brazil). One clade (BRA 1) is unique to Brazil, while the other (BRA 2) is closely related to the eastern Atlantic lineage. Possible explanations for this pattern include both natural and anthropic mechanisms.
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Maidan I, Patashov D, Shustak S, Fahoum F, Gazit E, Shapiro B, Levy A, Sosnik R, Giladi N, Hausdorff JM, Mirelman A. A new approach to quantifying the EEG during walking: Initial evidence of gait related potentials and their changes with aging and dual tasking. Exp Gerontol 2019; 126:110709. [PMID: 31449852 DOI: 10.1016/j.exger.2019.110709] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/22/2019] [Revised: 08/16/2019] [Accepted: 08/21/2019] [Indexed: 01/24/2023]
Abstract
BACKGROUND The electroencephalogram (EEG) can be a useful tool to investigate the neurophysiology of gait during walking. Our aims were to develop an approach that identify and quantify event related potentials (ERPs) during a gait cycle and to examine the effects of aging and dual tasking on these gait related potentials (GRPs). METHODS 10 young and 10 older adults walked on a treadmill while wearing a wireless 20-channels EEG and accelerometers on the ankles. Each heel strike extracted from the accelerometers was used as an event to which the electrical brain activity pattern was locked. The subjects performed usual and dual task walking that included an auditory oddball task. GRPs amplitude and latency were computed, and a new measure referred to as Amplitude Pattern Consistency (APC) was developed to quantify the consistency of these GRP amplitudes within a gait cycle. The results were compared between and within groups using linear mixed model analysis. RESULTS The electrical pattern during a gait cycle consisted of two main positive GRPs. Differences in these GRPs between young and older adults were observed in Pz and Cz. In Pz, older adults had higher GRPs amplitude (p = 0.006, p = 0.010), and in Cz lower APC (p = 0.025). Alterations were also observed between the walking tasks. Both groups showed shorter latency during oddball walking compared to usual walking in Cz (p = 0.040). In addition, the APC in Cz was correlated with gait speed (r = 0.599, p = 0.011) in all subjects and with stride time variability in the older adults (r = -0.703, p = 0.023). CONCLUSIONS This study is the first to define specific gait related potentials within a gait cycle using novel methods for quantifying waveforms. Our findings show the potential of this approach to be applied broadly to study the EEG during gait in a variety of contexts. The observed changes in GRPs with aging and walking task and the relationship between GRPs and gait may suggest the neurophysiologic foundation for studying walking and for developing new approaches for improving gait.
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Le Pechoux C, Botticella A, Levy A, Henry O, Chabert I, Caramella C. MS07.06 Hot Topics in SBRT - Biopsy, Central Lesions, Radiologic Evaluation. J Thorac Oncol 2019. [DOI: 10.1016/j.jtho.2019.08.334] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
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Levra MG, Benet J, Hasan B, Berghmans T, Bruni A, Dingemans A, Levra NG, Edwards J, Faivre-Finn C, Girard N, Gobbini E, Greillier L, Hendriks L, Lantuejoul S, Levy A, Novello S, O'Brien M, Reck M, Pochesci A, Menis J, Besse B. MA08.02 Durvalumab Impact in the Treatment Strategy of Stage III Non-Small Cell Lung Cancer (NSCLC): An EORTC Young Investigator Lung Cancer Group Survey. J Thorac Oncol 2019. [DOI: 10.1016/j.jtho.2019.08.557] [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]
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