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Pommier T, Lafont A, Didier R, Garnier L, Duloquin G, Meloux A, Sagnard A, Graber M, Dogon G, Laurent G, Vergely C, Béjot Y, Guenancia C. Factors associated with patent foramen ovale-related stroke: SAFAS study. Rev Neurol (Paris) 2024; 180:33-41. [PMID: 37777437 DOI: 10.1016/j.neurol.2023.05.007] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/28/2023] [Revised: 05/08/2023] [Accepted: 05/22/2023] [Indexed: 10/02/2023]
Abstract
BACKGROUND Persistent foramen ovale (PFO) contributes to cryptogenic stroke and is associated with stroke recurrence, although the exact mechanism of ischemic events is not fully understood. Several biomarkers have been developed for the prediction of atrial fibrillation after stroke, but there are currently only limited data on their potential value for the diagnosis of PFO-related stroke. METHODS This study was a prospective single-center study that included all patients hospitalized between March 31, 2018, and January 18, 2020, in the stroke department of the Dijon University Hospital for ischemic stroke without obvious cause and without a history of atrial fibrillation. PFO was systematically screened by transthoracic echocardiography and images were reviewed by an independent cardiologist blinded from clinical data. PFO was defined according to the CLOSE trial criteria: PFO associated with interatrial septal aneurysm or significant interatrial shunt (> 30 microbubbles in the left atrium within three cardiac cycles after right atrial opacification). The potential association of PFO-related stroke with biomarkers of cardiac fibrosis and inflammation such as galectin-3, GDF-15, ST-2, osteoprotegerin and NT-proBNP was tested using multivariate backward stepwise logistic regression. RESULTS Of the 240 patients included in the SAFAS study, 229 had complete echocardiographic data, and 23 (10%) had PFO-related stroke. Patients with PFO-related stroke were significantly younger (58±14 vs. 69±14, P<0.001), had less frequent previous arterial hypertension (30 vs. 60%, P=0.008), and more frequent cerebellar territory involvement (26 vs. 9%, P=0.014) compared to the other patients. In addition, they had less frequently left atrial dilatation (left atrial index volume>34mL/m2 [9 vs. 35%, P=0.009]). After ROC curve analysis for definition of thresholds, PFO-related stroke patients more often had galectin-3<9.5ng/mL (59 vs. 27%, P=0.002), ST2<13380pg/ml (23 vs. 50%, P=0.007), GDF-15<1200ng/mL (59 vs. 27%, P=0.002), osteoprotegerin<1133pg/mL (82 vs. 58%, P=0.033) and NT-proBNP<300pg/mL (88 vs. 55%, P=0.009). After multivariate analysis, only galectin-3<9.5ng/mL (OR [95% CI] 3.4 [1.18; 9.8], P=0.024) and osteoprotegerin<1133pg/L (OR [95% CI] 5.0 [1.1; 22.9], P=0.038) were independently associated with PFO-related stroke. CONCLUSION Patients in whom cryptogenic stroke is attributed to a significant PFO have a specific clinical and biological phenotype. Low levels of galectin-3 and osteoprotegerin may help identify patients with PFO-related strokes.
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Affiliation(s)
- T Pommier
- Cardiology Department, University Hospital, 14, rue Paul-Gaffarel, 21079 Dijon cedex, France; Pathophysiology and Epidemiology of Cerebro-Cardiovascular diseases (EA 7460), Faculty of Health Sciences, université de Bourgogne, université de Bourgogne Franche-Comté, Dijon, France
| | - A Lafont
- Cardiology Department, University Hospital, 14, rue Paul-Gaffarel, 21079 Dijon cedex, France
| | - R Didier
- Cardiology Department, University Hospital, 14, rue Paul-Gaffarel, 21079 Dijon cedex, France; Pathophysiology and Epidemiology of Cerebro-Cardiovascular diseases (EA 7460), Faculty of Health Sciences, université de Bourgogne, université de Bourgogne Franche-Comté, Dijon, France
| | - L Garnier
- Pathophysiology and Epidemiology of Cerebro-Cardiovascular diseases (EA 7460), Faculty of Health Sciences, université de Bourgogne, université de Bourgogne Franche-Comté, Dijon, France; Neurology Department, University Hospital, Dijon, France
| | - G Duloquin
- Pathophysiology and Epidemiology of Cerebro-Cardiovascular diseases (EA 7460), Faculty of Health Sciences, université de Bourgogne, université de Bourgogne Franche-Comté, Dijon, France; Neurology Department, University Hospital, Dijon, France
| | - A Meloux
- Pathophysiology and Epidemiology of Cerebro-Cardiovascular diseases (EA 7460), Faculty of Health Sciences, université de Bourgogne, université de Bourgogne Franche-Comté, Dijon, France
| | - A Sagnard
- Cardiology Department, University Hospital, 14, rue Paul-Gaffarel, 21079 Dijon cedex, France
| | - M Graber
- Pathophysiology and Epidemiology of Cerebro-Cardiovascular diseases (EA 7460), Faculty of Health Sciences, université de Bourgogne, université de Bourgogne Franche-Comté, Dijon, France; Neurology Department, University Hospital, Dijon, France
| | - G Dogon
- Pathophysiology and Epidemiology of Cerebro-Cardiovascular diseases (EA 7460), Faculty of Health Sciences, université de Bourgogne, université de Bourgogne Franche-Comté, Dijon, France
| | - G Laurent
- Cardiology Department, University Hospital, 14, rue Paul-Gaffarel, 21079 Dijon cedex, France; Pathophysiology and Epidemiology of Cerebro-Cardiovascular diseases (EA 7460), Faculty of Health Sciences, université de Bourgogne, université de Bourgogne Franche-Comté, Dijon, France
| | - C Vergely
- Pathophysiology and Epidemiology of Cerebro-Cardiovascular diseases (EA 7460), Faculty of Health Sciences, université de Bourgogne, université de Bourgogne Franche-Comté, Dijon, France
| | - Y Béjot
- Pathophysiology and Epidemiology of Cerebro-Cardiovascular diseases (EA 7460), Faculty of Health Sciences, université de Bourgogne, université de Bourgogne Franche-Comté, Dijon, France; Neurology Department, University Hospital, Dijon, France
| | - C Guenancia
- Cardiology Department, University Hospital, 14, rue Paul-Gaffarel, 21079 Dijon cedex, France; Pathophysiology and Epidemiology of Cerebro-Cardiovascular diseases (EA 7460), Faculty of Health Sciences, université de Bourgogne, université de Bourgogne Franche-Comté, Dijon, France.
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Grygorowicz C, Badoz M, Garnier L, Serzian G, Duloquin G, Fichot M, Vergely C, Laurent G, Bejot Y, Guenancia C. Incidence and predictors of atrial fibrillation in a large cohort of implantable cardiac monitors after cryptogenic stroke. Archives of Cardiovascular Diseases Supplements 2023. [DOI: 10.1016/j.acvdsp.2022.10.184] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
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Habbout A, Sagnard A, Pommier T, Garnier F, Fichot M, Bertaux G, Laurent G, Guenancia C. Incidence and predictors of pacemaker implantation at follow-up after reversible high-degree sinus node dysfunction or atrioventricular block. Archives of Cardiovascular Diseases Supplements 2023. [DOI: 10.1016/j.acvdsp.2022.10.203] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
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Chagué F, Kouamé M, Lhuillier I, Maza M, Bichat F, Philippe B, Mock L, Ravisy J, Laurent G, Zeller M, Cottin Y. Sport-related myocardial infarction: Context of onset, clinical features and one-year follow-up. Results from the IMACS prospective cohort. Archives of Cardiovascular Diseases Supplements 2023. [DOI: 10.1016/j.acvdsp.2022.10.247] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
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Chague F, Kouame I, Porot G, Lhuilier I, Maza M, Saint Jalmes M, Bichat F, Laurent G, Zeller M, Cottin Y. High prevalence of complex coronary artery lesions in sport-related myocardial infarction. Contemporary data from the RICO survey. Eur J Prev Cardiol 2022. [PMCID: PMC9384061 DOI: 10.1093/eurjpc/zwac056.273] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/14/2022]
Abstract
Funding Acknowledgements Type of funding sources: Public Institution(s). Main funding source(s): Agence régionale de santé de Bourgogne Franche-Comté Background Underlying mechanisms for sport-related acute myocardial infarction (SR-AMI) are only poorly understood. Moreover, their coronary artery disease (CAD) characteristics and lesion complexity are poorly described. Purpose To characterize coronary angiographic feature of patients with SR-AMI Methods From the RICO database, a large regional acute MI survey, all consecutive patients hospitalized in our University Hospital from 2010 to 2021 who underwent coronary angiography for SR-MI were retrospectively analysed. SR-MI was defined as MI occurring during sport activity or within the first hour of recovery. Results Among the 174 patients included, most were male (n=157(91%)). Median (IQR) age was 59 y (48-66), and had ST segment elevation MI (STEMI) (n= 112 (64%)). The SR-MI often occurred while cycling (41%), jogging (23%), hiking (9%) or playing soccer (9%). Patients commonly experienced pre-hospital (PH) sudden cardiac arrest (SCA) (17%). Atherothrombotic risk factors were dyslipidaemia (32%), current smoking (31%) or hypertension (28%). A history of CAD was documented in 31 (18%) patients. Most (n=156(91%)) had significant lesions, of whom 140 (81%) were considered as culprit. Culprit lesions were located on left anterior descending (39%), circumflex (14%) and right coronary artery (33%). Median (IQR) Syntax score was 10.5 (6-15). The vast majority of patients (n=152 (87%)) had at least one complex lesion; 114 of them had several characteristics of complex lesion. Lesions were eccentric in 68 (39%) patients; an intraluminal thrombus was documented in 85 patients (49%), in 55% of STEMI and 37% of non-STEMI (p =0.027). However, 18 subjects (10%) had optically normal coronary angiogram or non-significant lesions, suggesting alternative mechanism such as type 2 MI. Treatment of the lesions was mainly achieved by PCI and/or stenting (n=132(77%)) or coronary artery bypass grafting (n=11(6%)). In-hospital death occurred in 11 patients (6%), of whom 10 experienced a PH-SCA and one was admitted with a cardiogenic shock during the Covid-19 pandemics lockdown. Among the 5 patients treated with extracorporeal membrane oxygenator, only one survived. Conclusion In our large retrospective study, SR-MI was commonly associated with complex coronary lesions, often characterized by intraluminal thrombus. Our findings suggest that the mechanisms of these events could be mainly related to type 1 MI patterns Moreover, PH-SCA was frequent, thus justifying mass-education to basic life support and deployment of automated external defibrillators, especially in the sport settings.
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Affiliation(s)
- F Chague
- University Hospital of Dijon, Cardiology department, Dijon, France
| | - I Kouame
- University Hospital of Dijon, Cardiology department, Dijon, France
| | - G Porot
- Hopital Valmy, Cardiology, Dijon, France
| | - I Lhuilier
- University Hospital of Dijon, Cardiology department, Dijon, France
| | - M Maza
- University Hospital of Dijon, Cardiology department, Dijon, France
| | - M Saint Jalmes
- University Hospital of Dijon, Cardiology department, Dijon, France
| | - F Bichat
- University Hospital of Dijon, Cardiology department, Dijon, France
| | - G Laurent
- University Hospital of Dijon, Cardiology department, Dijon, France
| | - M Zeller
- University of Bourgogne Franche-Comté, PEC2, EA 7460, Dijon, France
| | - Y Cottin
- University Hospital of Dijon, Cardiology department, Dijon, France
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Saliman S, Didier R, Blain M, Leclercq T, Maza M, Artus A, Issa R, Zeller M, Cochet A, Cottin Y, Laurent G. No impact of sub-clinical coronary artery disease identified by cardiac CT scan on the recurrence of atrial fibrillation after a single ablation procedure. Archives of Cardiovascular Diseases Supplements 2022. [DOI: 10.1016/j.acvdsp.2021.09.192] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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Rosier A, Crespin E, Lazarus A, Laurent G, Menet A, Gozlan A, Varma N. A novel machine learning algorithm has the potential to reduce by 1/3 the quantity of ILR episodes needing review. Eur Heart J 2021. [DOI: 10.1093/eurheartj/ehab724.0316] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
Abstract
Background
Implantable Loop Recorders (ILRs) are increasingly used and generate a high workload for timely adjudication of ECG recordings. In particular, the excessive false positive rate leads to a significant review burden.
Purpose
A novel machine learning algorithm was developed to reclassify ILR episodes in order to decrease by 80% the False Positive rate while maintaining 99% sensitivity.
This study aims to evaluate the impact of this algorithm to reduce the number of abnormal episodes reported in Medtronic ILRs.
Methods
Among 20 European centers, all Medtronic ILR patients were enrolled during the 2nd semester of 2020. Using a remote monitoring platform, every ILR transmitted episode was collected and anonymised.
For every ILR detected episode with a transmitted ECG, the new algorithm reclassified it applying the same labels as the ILR (asystole, brady, AT/AF, VT, artifact, normal). We measured the number of episodes identified as false positive and reclassified as normal by the algorithm, and their proportion among all episodes.
Results
In 370 patients, ILRs recorded 3755 episodes including 305 patient-triggered and 629 with no ECG transmitted. 2821 episodes were analyzed by the novel algorithm, which reclassified 1227 episodes as normal rhythm. These reclassified episodes accounted for 43% of analyzed episodes and 32.6% of all episodes recorded.
Conclusion
A novel machine learning algorithm significantly reduces the quantity of episodes flagged as abnormal and typically reviewed by healthcare professionals.
Funding Acknowledgement
Type of funding sources: None. Figure 1. ILR episodes analysis
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Affiliation(s)
- A Rosier
- Jacques Cartier Private Hospital, Massy, France
| | | | - A Lazarus
- Clinique Medico-Chirurgicale Ambroise Pare, Neuilly sur Seine, France
| | - G Laurent
- University Hospital of Dijon, Dijon, France
| | | | | | - N Varma
- Cleveland Clinic, Cleveland, United States of America
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Cottin Y, Ben Messaoud B, Yao H, Laurent G, Bisson A, Eicher J, Bodin A, Herbert J, Juilliere Y, Zeller M, Fauchier L. Exploring the temporal relationship between atrial fibrillation and heart failure development. Analysis from nationwide database. Eur Heart J 2021. [DOI: 10.1093/eurheartj/ehab724.0430] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Abstract
Abstract
Background
Atrial fibrillation (AF) and heart failure (HF) often coexist and are closely intertwined, each condition worsening the other. The temporal relationships between these two disorders have not yet been fully explored. We assessed, on a nationwide scale, the prognosis of patients hospitalized with HF and AF, based on the timing of AF and HF development.
Methods
From the administrative database covering hospital care for the whole French population, we identified 1,349,638 patients diagnosed with both AF and HF between 2010 and 2018: 956,086 of these AF patients developed HF first (prevalent HF) and 393,552 developed HF after AF (incident HF). The outcome analysis (all-cause death, cardiovascular [CV] death, ischemic stroke or hospitalization for HF) was performed with follow-up starting at the time of last event between AF or HF in the whole cohort and in 427,848 propensity-score-matched patients (213,924 with incident HF and 213,924 with prevalent HF).
Results
During follow-up (mean follow-up 1.6±1.9 year), matched patients with prevalent HF had a higher risk of all-cause death (21.6 vs 19.2%/year), CV death (7.6 vs 6.5%/year) as well as non-cardiovascular death (13.9 vs 12.7%/year) than those with incident HF. The risk for ischemic stroke was lower in the prevalent HF group (1.2 vs 2.4%/year).
Conclusion
In patients hospitalized with both AF and HF, we identified two distinct clinical entities based on the chronological sequence of the two disorders. Patients in whom HF preceded AF (prevalent HF) had higher mortality and higher risk of rehospitalization for HF.
Funding Acknowledgement
Type of funding sources: None.
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Affiliation(s)
- Y Cottin
- University Hospital Center Dijon Bourgogne, Cardiology Department, Dijon, France
| | - B.M Ben Messaoud
- University Hospital Center Dijon Bourgogne, Cardiology Department, Dijon, France
| | - H Yao
- University Hospital Center Dijon Bourgogne, Cardiology Department, Dijon, France
| | - G Laurent
- University Hospital Center Dijon Bourgogne, Cardiology Department, Dijon, France
| | - A Bisson
- CHU Trousseau and University François Rabelais, Cardiology department, Tours, France
| | - J.C Eicher
- University Hospital Center Dijon Bourgogne, Cardiology Department, Dijon, France
| | - A Bodin
- CHU Trousseau and University François Rabelais, Cardiology department, Tours, France
| | - J Herbert
- CHU Trousseau and University François Rabelais, Cardiology department, Tours, France
| | - Y Juilliere
- CHU Nancy, Cardiology department, Nancy, France
| | - M Zeller
- University of Bourgogne Franche Comte, Equipe PEC2, EA 7460, UFR Sciences de Santé, Dijon, France
| | - L Fauchier
- CHU Trousseau and University François Rabelais, Cardiology department, Tours, France
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Chague F, Cottin Y, Lhuillier I, Guinchard S, Tribouillard L, Bichat F, Maza M, Saint Jalmes M, Massenot J, Laurent G, Zeller M. Sport-related acute myocardial infarction. Contemporary data from IMACS survey. Eur Heart J 2021. [DOI: 10.1093/eurheartj/ehab724.2450] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
Abstract
Background
Sport-related (SR) acute cardiovascular (CV) events are the main cause of sudden cardiac death in the setting of sport activities. However, data are very scarce regarding onset and follow-up of SR acute myocardial infarction (AMI).
Methods
From the prospective study IMACS (Infarctus du Myocarde et Arret Cardiaque au cours du Sport) patients admitted for a SR-AMI in our university hospital from April 2018 to March 2020 were included. A 12 months follow-up (FU) was achieved through telephone interview to address CV outcomes and sport practice information. Information was obtained from relatives in case of out of hospital sudden cardiac arrest (OH-SCA).
Results
Among the 55 patients included, all were male, with median (IQR) age at 62 (55–69) y. Most common sports were cycling (n=21), fitness (n=7), swimming (n=5) and hiking (n=5). The SR-AMI occurred during effort for 39 subjects and during recovery for 16. Most SR-AMI occurred in public area (n=24), at home (n=16), or in a specific sport location (n=14). An Automated External Defibrillator (AED) was available in the SR-AMI location in only 10, but was missing in 43 (unknown for 2). In 1 subject with OH-SCA, cardiopulmonary resuscitation (CPR), initiated by witnesses, using a public AED, was unsuccessful. The 4 other patients with OH-SCA underwent successful CPR. Among the 55 subjects, 4 were vapers, of whom 1 was a dual user, 17 were current tobacco smokers, 18 were ex-smokers and 2 experienced cannabis and cocaine use. Among the smokers, most smoked (n=10) or consumed cannabis (n=1) <2h before the event. Strikingly, CV history and/or recent symptoms were present in almost half (n=25). Only 10 felt symptoms exclusively during the sport session. Moreover, a medical advice for recent symptoms was found only for 3 subjects. Three patients who experienced prior AMI have neglected symptoms during the index event. Most were ST segment elevated MI (n=35). Only one patient (with OH-SCA) died <3 days after hospital admission. During hospitalization, most underwent revascularization with coronary stenting (n=44) (drug eluting stent in 43 patients), or coronary artery bypass graft (n=6) and no death nor significant CV event occurred. At 1-FU, most attended a rehabilitation program (n=41) and the majority of smokers quitted (14/17), with 3 persistent smokers starting to vape. Almost half patients (n=23) decreased their physical activity, and 21 increased it. A significant rate of patient (n=9) added fitness in their usual activity, and as a main sport for 4 of them.
Conclusions
In this on-going monocentric prospective survey in SR-AMI, a high proportion of subjects had prodromal symptoms, of whom only few led to sport cessation and medical advices, when requested, failed to prevent the AMI. Our findings highlight that public and medical education are urgently warranted for SR-AMI prevention.
Funding Acknowledgement
Type of funding sources: Public hospital(s). Main funding source(s): CHU Dijon Bourgogne Franche Comté et ARS Bourgogne Franche Comté
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Affiliation(s)
- F Chague
- University Hospital Center Dijon Bourgogne, Cardiology Department, Dijon, France
| | - Y Cottin
- University Hospital Center Dijon Bourgogne, Cardiology Department, Dijon, France
| | - I Lhuillier
- University Hospital Center Dijon Bourgogne, Cardiology Department, Dijon, France
| | - S Guinchard
- University Hospital Center Dijon Bourgogne, Cardiology Department, Dijon, France
| | - L Tribouillard
- University Hospital Center Dijon Bourgogne, Cardiology Department, Dijon, France
| | - F Bichat
- University Hospital Center Dijon Bourgogne, Cardiology Department, Dijon, France
| | - M Maza
- University Hospital Center Dijon Bourgogne, Cardiology Department, Dijon, France
| | - M Saint Jalmes
- University Hospital Center Dijon Bourgogne, Cardiology Department, Dijon, France
| | - J Massenot
- University Hospital Center Dijon Bourgogne, Cardiology Department, Dijon, France
| | - G Laurent
- University Hospital Center Dijon Bourgogne, Cardiology Department, Dijon, France
| | - M Zeller
- University of Bourgogne Franche Comte, Equipe PEC2, EA 7460, UFR Sciences de Santé, Dijon, France
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Campiche R, Curpen SJ, Lutchmanen-Kolanthan V, Gougeon S, Cherel M, Laurent G, Gempeler M, Schuetz R. Pigmentation effects of blue light irradiation on skin and how to protect against them. Int J Cosmet Sci 2021; 42:399-406. [PMID: 32478879 PMCID: PMC7496068 DOI: 10.1111/ics.12637] [Citation(s) in RCA: 22] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/24/2020] [Revised: 04/30/2020] [Accepted: 05/26/2020] [Indexed: 12/18/2022]
Abstract
Background Visible light, in particular blue light, has been identified as an additional contributor to cutaneous photoageing. However, clinical studies demonstrating the clear effect of blue light on photoageing are still scarce, and so far, most studies have focused on broad‐spectrum visible light. Although there is evidence for increased skin pigmentation, the underlying mechanisms of photoageing in vivo are still unclear. Furthermore, there is still a need for active ingredients to significantly protect against blue light‐induced hyperpigmentation in vivo. Our study had two aims: to detect visible changes in skin pigmentation following repeated irradiation of the skin with LED‐based blue light and to reduce pigmentation using suitable active ingredients. Method We conducted a randomized, double‐blind and placebo‐controlled clinical study on 33 female volunteers with skin phototypes III and IV. We used a repetitive blue light (4 × 60 J cm−2, 450 nm) irradiation protocol on the volunteers’ inner forearms. Using hyperspectral imaging, we assessed chromophore status. In addition, we took chromameter measurements and photographs to assess visible hyperpigmentation. Results We measured significant changes in chromophore status (P < 0.001 vs baseline), that is of melanin, haemoglobin and oxygen saturation, immediately after blue light irradiation. In addition, we found visible skin colour changes which were expressed by a significant decrease in ITA° values (delta ITA° = −16.89, P < 0.001 vs baseline for the placebo group) and an increase in a* (delta a* = +3.37, P < 0.001 vs baseline for the placebo group) 24 h post‐irradiation. Hyperpigmentation and skin reddening were mitigated by both a formulation containing 3% of a microalgal product and a formulation containing 3% niacinamide. Conclusion Our study sets out an efficient and robust protocol for investigating both blue light‐induced cutaneous alterations, such as changes in skin chromophores, and signs of photoageing, such as hyperpigmentation. Moreover, we have shown evidence that both an extract of the microalga Scenedesmus rubescens and niacinamide (vitamin B3) have the potential to protect against blue light‐induced hyperpigmentation.
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Affiliation(s)
- R Campiche
- DSM Nutritional Products, Personal Care & Aroma, Wurmisweg 576, Kaiseraugst, 4303, Switzerland
| | - S J Curpen
- Centre International de Développement Pharmaceutique (CIDP), BioPark Mauritius, SOCOTA Phoenicia, Sayed Hossen Road, Phoenix, 73408, Mauritius
| | - V Lutchmanen-Kolanthan
- Centre International de Développement Pharmaceutique (CIDP), BioPark Mauritius, SOCOTA Phoenicia, Sayed Hossen Road, Phoenix, 73408, Mauritius
| | - S Gougeon
- Newtone Technologies, 13 bis Place Jules Ferry, Lyon, 69006, France
| | - M Cherel
- Newtone Technologies, 13 bis Place Jules Ferry, Lyon, 69006, France
| | - G Laurent
- DSM Nutritional Products, Personal Care & Aroma, Wurmisweg 576, Kaiseraugst, 4303, Switzerland
| | - M Gempeler
- DSM Nutritional Products, Personal Care & Aroma, Wurmisweg 576, Kaiseraugst, 4303, Switzerland
| | - R Schuetz
- DSM Nutritional Products, Personal Care & Aroma, Wurmisweg 576, Kaiseraugst, 4303, Switzerland
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Chague F, Boulin M, Eicher JC, Bichat F, Saint-Jalmes M, Cransac-Miet A, Trojak B, Soudry A, Danchin N, Laurent G, Cottin Y, Zeller M. Smoking and associated unhealthy lifestyle behaviours in patients with chronic cardiac diseases during COVID-19 related lockdown. Eur J Prev Cardiol 2021. [PMCID: PMC8136031 DOI: 10.1093/eurjpc/zwab061.293] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Abstract
Funding Acknowledgements Type of funding sources: Public hospital(s). Main funding source(s): Dijon University Hospital France OnBehalf CLEO-CD Background Lockdown can affect tobacco smoking (TS) behaviours. Purpose To evaluate the impact of lockdown on (TS) and associated lifestyle behaviours in patients with Chronic coronary syndrome (CCS) and congestive heart failure (CHF) Methods CCS and CHF patients were invited to answer to a phone-call questionnaire during the 1st COVID-19 lockdown start Results (Table) 343 questionnaires were fit for analysis, 43 (12.5%) were current smokers (CS). CS were younger (p < 0.001), none stopped and 13 increased their consumption (main reasons were stress and boredom). CS felt more often cramped (p = 0.023). CS who increased their TS consumption showed a trend toward a higher rate of unhealthy lifestyle behaviours Conclusions During the lockdown, more than ¼ of CS with CCS or CHF increased their TS consumption and none quitted. Moreover, TS was often associated with other deleterious behaviours increasing their risk for short and long term Main results | Total | Non-Smokers | Smokers | p* |
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N(%) | 344 | 301 | 43 | | Age, years | 67.7 ± 12.8 | 69.2 ± 12.2 | 57.2 ± 12.1 | <0.001 | Men/Women | 229/115 | 197/104 | 32/11 | 0.300 | CCS/CHF | 220/124 | 185/116 | 36/7 | 0.004 | Urban/Rural | 163/181 | 137/164 | 26/17 | 0.073 | Living alone at home | 83(24.3) | 68(22.7) | 15(34.9) | 0.089 | COVID screening (PCR) | 11(3.2) | 7(2.3) | 4(9.3) | 0.037 | Feeling cramped | 19(5.5) | 13(4.4) | 6(14.0) | 0.023 | Feeling less well | 75(21.9) | 65(21.7) | 10(23.8) | 0.842 | K6 ≥ 5 | 81(23.7) | 70(23.5) | 11(25.6) | 0.845 | Physical activity decrease | 146(42.6) | 125(42.1) | 21(48.8) | 0.323 | Screen time increase | 154(45.0) | 130(43.5) | 24(55.8) | 0.100 | Alcohol consumption increase | 14(5.5) | 11(4.9) | 3(7.5) | 0.419 | Sleep change | 83(24.6) | 68(22.5) | 15(39.5) | 0.083 | Weight increase | 77(22.4) | 64(21.3) | 13(30.2) | 0.242 | Smokers (n = 43) | Smoking increase | No smoking increase | p** | Feeling less well | 5(38.5) | 5(17.2) | 0.238 | Screen time increase | 10(76.9) | 14(46.7) | 0.104 | Weight increase | 6(46.2) | 7(23.3) | 0.173 |
n(%) or mean ± SD. *p value: Smokers vs non smokers. **p value: Smoking increase vs no smoking increase
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Affiliation(s)
- F Chague
- University Hospital Center, Cardiology, Dijon, France
| | - M Boulin
- University Hospital Center, Pharmacy, Dijon, France
| | - JC Eicher
- University Hospital Center, Cardiology, Dijon, France
| | - F Bichat
- University Hospital Center, Cardiology, Dijon, France
| | | | | | - B Trojak
- University Hospital Center, Psychiatry, Dijon, France
| | - A Soudry
- University Hospital Center, Clinical Research, Dijon, France
| | - N Danchin
- European Hospital Georges Pompidou, Cardiology, Paris, France
| | - G Laurent
- University Hospital Center, Cardiology, Dijon, France
| | - Y Cottin
- University Hospital Center, Cardiology, Dijon, France
| | - M Zeller
- University of Bourgogne Franche-Comté, PEC2, EA 7460, Dijon, France
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12
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Chague F, Boulin M, Eicher JC, Bichat F, Saint-Jalmes M, Cransac-Miet A, Soudry A, Danchin N, Laurent G, Cottin Y, Zeller M. Impact of lockdown in patients with congestive heart failure during the Covid-19 pandemic. Eur J Prev Cardiol 2021. [PMCID: PMC8136091 DOI: 10.1093/eurjpc/zwab061.031] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/14/2022]
Abstract
Funding Acknowledgements Type of funding sources: Private company. Main funding source(s): Dijon Football Côte d"Or OnBehalf CLEO-CD Background Congestive heart failure (CHF) can be destabilized by Covid-19 (C19) lockdown. Purpose To evaluate the impact of lockdown in CHF patients. Methods 150 out-patients from the HF Clinic of our hospital were invited to answer to a phone-call interview during the 7th week of first C19 lockdown . Results From 124 questionnaires, more than 1/5 felt worse and almost 1/4 declared a psychologic distress. CHF medications were modified in 10%. Decrease in physical activity was observed in 2/5. Almost 1/2 declared increased screen time; smokers often increased consumption. Adherence to dietary counselling was reduced by 1/6, increase in weight and HF symptoms were common. Some patients benefitted from a teleconsultation. Conclusions Our patients exhibited well-being impairment and unhealthy behaviours. Medication adherence was not diminished and the reduction in care access was counterbalanced by a switch toward telehealth. Main results | 124 patients | 75 Male (M) | 49 Female (F) | p value between M and F |
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Age, years | 71.0 ± 14.0 | 68.9 ± 13.7 | 74.3 ± 14.0 | 0.03 | Urban/Rural | 82/42 | 49/26 | 33/16 | 0.84 | HFrEF* | 87 | 62 | 25 | <0.001 | Dilated cardiomyopathy | 50 | 37 | 13 | 0.02 | Ischemic | 23 | 18 | 5 | 0.06 | Other | 51 | 20 | 31 | <0.0001 | Current NYHA class I/II/III/IV | 39/48/28/9 | 29/29/14/3 | 10/19/14/6 | 0.66 | History of NYHA III-IV class | 94 | 62 | 32 | 0.03 | Electronic device/Telemonitoring | 77/28 | 54/18 | 23/10 | <0.001/0.66 | Increase in dyspnea or edema or fatigue | 27 | 13 | 14 | 0.07 | Decrease in well-being | 27 | 12 | 15 | 0.07 | Psychological distress (#) | 23 | 15 (20.0) | 8 | 0.64 | Weight gain > 2 kg | 34 | 22 (29.3) | 12 | 0.68 | Switch for teleconsultation (##) | 16 | 11 (34.4) | 5 | 1 | Teleconsultation (total) | 23 | 14 | 9 | 1 | Decrease in physical activity | 52 | 25 (33.3) | 27 | 0.02 | Increase in screen time | 57 | 31 (41.3) | 26 | 0.27 | Increase in cigarette consumption (9 smokers) | 4 | 3 | 1 | 1 | Decrease in dietary adherence (###) | 22 (17.7) | 15 (20.0) | 7 (14.3) | 0.47 |
*HFrEF; # Kessler-6 score ≥ 5; ## from planned physical examination; ### salt, water, alcohol
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Affiliation(s)
- F Chague
- University Hospital Center, Cardiology, Dijon, France
| | - M Boulin
- University Hospital Center, Pharmacy, Dijon, France
| | - JC Eicher
- University Hospital Center, Cardiology, Dijon, France
| | - F Bichat
- University Hospital Center, Cardiology, Dijon, France
| | | | | | - A Soudry
- University Hospital Center, Clinical Research, Dijon, France
| | - N Danchin
- European Hospital Georges Pompidou, Cardiology, Paris, France
| | - G Laurent
- University Hospital Center, Cardiology, Dijon, France
| | - Y Cottin
- University Hospital Center, Cardiology, Dijon, France
| | - M Zeller
- University of Bourgogne Franche-Comté, PEC2, EA 7460, Dijon, France
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Mertz V, Maalem Ben Messaoud B, Laurent G, Bisson A, Eicher JC, Bodin A, Herbert J, Zeller M, Cottin Y, Fauchier L. Atrial fibrillation with our with-out structural abnormalities. Archives of Cardiovascular Diseases Supplements 2021. [DOI: 10.1016/j.acvdsp.2020.10.208] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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14
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Mertz V, Maalemben Messaoud B, Laurent G, Bisson A, Eicher J, Bodin A, Herbert J, Zeller M, Cottin Y, Fauchier L. Atrial fibrillation with or without structural abnormalities. Analysis from a nationwide database. Eur Heart J 2020. [DOI: 10.1093/ehjci/ehaa946.0467] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
Abstract
Background
Atrial Fibrillation (AF) is often associated with underlying heart failure, valvular disease, ischemic heart disease, as well as other structural heart diseases, but can also occur as an independent entity which may be named pure AF or lone AF. Small cohort studies have suggested that lone AF patients may have a favorable prognosis in terms of mortality and ischemic stroke rates. We aimed to assess, at a nationwide scale, the prognosis of patients hospitalized with lone AF and AF associated with cardiac disease.
Methods
From the French administrative hospital-discharge PMSI database (Programme de Médicalisation des Systèmes d'Information) covering hospital care and representative of the whole French population, all consecutive patients with AF diagnosis hospitalized between 2010 and 2018 were included. From this huge database, 2,793,234 patients were included: group lone FA: 665,431, group AF and cardiac disease: 2,727,803. Incidence rates (%/year) for the outcomes (all-cause death, cardiovascular [CV] death, or ischemic stroke) during follow-up were compared between groups using incidence rate ratios (RR) for the whole cohort and also for a subgroup of 539,654 propensity score matched patients for non-cardiovascular conditions (269,827 with AF alone and 269,827 with AF and CD).
Results
The majority of this population had AF associated with a cardiac disease (n=2,127,803; 76.2%). At follow-up (median [IQR] 1.1 [0.1–3.4] years), patients with AF and CD were at higher risk of all-cause mortality (yearly incidence 13.6% vs 9.0%, RR [95% CI] 1.51 [1.50–1.52], p<0.00001) and CV death (4.4% vs 1.9%, RR 2.33 [2.30–2.36], p<0.00001) than those with lone AF. In the propensity score matched population (median follow-up [IQR] 1.9 [0.3–4.4] years), patients with AF and CD also had worse outcomes than patients with lone AF (yearly incidence rates for all-cause mortality: 10.6% vs 7.4%, RR 1.43 [1.42–1.45], p<0.00001; and for CV death: 3.3% vs 2.0%, RR 1.64 [1.61–1.68], p<0.00001). However, lone AF patients were at higher risk of ischemic stroke: yearly incidence rates 2.75% in those with lone AF vs 1.69% in patients with AF and CD (RR 0.62 [0.60–0.63], p<0.00001).
Conclusion
In our large study from a nationwide database about patients hospitalized with AF, two distinct clinical entities were identified, that could explain the results highlighted: 1) the consistently higher mortality in the group associating AF and underlying heart disease (AF may bea marker for poor outcome when there is a structural heart disease; 2) Lone AF group which prognosis may be related to a higher incidence of thromboembolic events. These results could have important implications in terms of thromboembolic prevention but further studies are still needed to investigate the underlying mechanisms of embolic pathophysiology and its specific management.
Funding Acknowledgement
Type of funding source: None
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Affiliation(s)
- V Mertz
- University Hospital Center Dijon Bourgogne, Cardiology Department, Dijon, France
| | - B Maalemben Messaoud
- University Hospital Center Dijon Bourgogne, Cardiology Department, Dijon, France
| | - G Laurent
- University Hospital Center Dijon Bourgogne, Cardiology Department, Dijon, France
| | - A Bisson
- University Hospital Center Trousseau and University F. Rabelais, Cardiology Department, Tours, France
| | - J.C Eicher
- University Hospital Center Dijon Bourgogne, Cardiology Department, Dijon, France
| | - A Bodin
- University Hospital Center Trousseau and University F. Rabelais, Cardiology Department, Tours, France
| | - J Herbert
- University Hospital Center Trousseau and University F. Rabelais, Cardiology Department, Tours, France
| | - M Zeller
- University of Bourgogne Franche Comte, PEC2, EA 7460, Dijon, France
| | - Y Cottin
- University Hospital Center Dijon Bourgogne, Cardiology Department, Dijon, France
| | - L Fauchier
- University Hospital Center Trousseau and University F. Rabelais, Cardiology Department, Tours, France
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15
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Dacher JN, Gandjbakhch E, Taieb J, Chauvin M, Anselme F, Bartoli A, Boyer L, Cassagnes L, Cochet H, Dubourg B, Fauchier L, Gras D, Klug D, Laurent G, Mansourati J, Marijon E, Maury P, Piot O, Pontana F, Sacher F, Sadoul N, Boveda S, Jacquier A. Joint Position Paper of the Working Group of Pacing and Electrophysiology of the French Society of Cardiology (SFC) and the Société française d'imagerie cardiaque et vasculaire diagnostique et interventionnelle (SFICV) on magnetic resonance imaging in patients with cardiac electronic implantable devices. Diagn Interv Imaging 2020; 101:507-517. [PMID: 32094095 DOI: 10.1016/j.diii.2020.02.003] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/28/2020] [Revised: 02/02/2020] [Accepted: 02/03/2020] [Indexed: 11/15/2022]
Abstract
Magnetic resonance imaging (MRI) has become the reference imaging for the management of a large number of diseases. The number of MR examinations increases every year, simultaneously with the number of patients receiving a cardiac electronic implantable device (CEID). A CEID was considered an absolute contraindication for MRI for years. The progressive replacement of conventional pacemakers and defibrillators by MR-conditional CEIDs and recent data on the safety of MRI in patients with "MR-nonconditional" CEIDs have progressively increased the demand for MRI in patients with a CEID. However, some risks are associated with MRI in CEID carriers, even with "MR-conditional" devices because these devices are not "MR-safe". A specific programing of the device in "MR-mode" and monitoring patients during MRI remain mandatory for all patients with a CEID. A standardized patient workflow based on an institutional protocol should be established in each institution performing such examinations. This joint position paper of the Working Group of Pacing and Electrophysiology of the French Society of Cardiology and the Société française d'imagerie cardiaque et vasculaire diagnostique et interventionnelle (SFICV) describes the effect and risks associated with MRI in CEID carriers. We propose recommendations for patient workflow and monitoring and CEID programming in MR-conditional, "MR-conditional nonguaranteed" and MR-nonconditional devices.
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Affiliation(s)
- J-N Dacher
- Normandie UNIV, UNIROUEN, Inserm U1096, CHU Rouen, Department of Radiology, Cardiac Imaging Unit, 76000 Rouen, France.
| | - E Gandjbakhch
- Sorbonne Universités, AP-HP, Heart Institute, La Pitié-Salpêtrière University Hospital, 75013 Paris, France
| | - J Taieb
- Hospital of Aix-en-Provence, Department of Cardiology, 13100 Aix-en-Provence, France
| | - M Chauvin
- Université de Strasbourg, CHU Strasbourg, Department of Cardiology, 67000 Strasbourg, France
| | - F Anselme
- Normandie UNIV, UNIROUEN, CHU Rouen, Department of Cardiology, 76000 Rouen, France
| | - A Bartoli
- Université Aix-Marseille, Centre Hospitalo-Universitaire Timone, AP-HM, Department of Radiology, CNRS, CRMBM, CEMEREM, 13005 Marseille, France
| | - L Boyer
- Université Clermont Auvergne, CHU Clermont-Ferrand, Department of Radiology, 63000 Clermont-Ferrand, France
| | - L Cassagnes
- Université Clermont Auvergne, CHU Clermont-Ferrand, Department of Radiology, 63000 Clermont-Ferrand, France
| | - H Cochet
- Université de Bordeaux-Inserm, IHU LIRYC, CHU de Bordeaux, Department of Cardiovascular Imaging, Hôpital Cardiologique du Haut-Lévêque, 33600 Pessac, France
| | - B Dubourg
- Normandie UNIV, UNIROUEN, Inserm U1096, CHU Rouen, Department of Radiology, Cardiac Imaging Unit, 76000 Rouen, France
| | - L Fauchier
- Université de Tours, CHU de Tours, Department of Cardiology, 37000 Tours, France
| | - D Gras
- Nouvelles Cliniques Nantaises, Department of Cardiology, 44200 Nantes, France
| | - D Klug
- Université de Lille, CHRU de Lille, Department of Cardiology, 59000 Lille, France
| | - G Laurent
- Université de Dijon, CHU de Dijon, Department of Cardiology, 21000 Dijon, France
| | - J Mansourati
- Université de Bretagne Occidentale, CHU de Brest, Department of Cardiology, 29200 Brest, France
| | - E Marijon
- Université de Paris, AP-HP, Department of Cardiology, Georges-Pompidou European University Hospital, 75015 Paris, France
| | - P Maury
- Université de Toulouse, Inserm U1048, Department of Cardiology, Hospital Rangueil, 31059 Toulouse, France
| | - O Piot
- Centre Cardiologique du Nord, Department of Cardiology, 93200 Saint-Denis, France
| | - F Pontana
- Université de Lille, Inserm U1011, Department of Cardiovascular Radiology, Institut Cœur-Poumon, 59000 Lille, France
| | - F Sacher
- Université de Bordeaux-Inserm, IHU LIRYC, CHU de Bordeaux, Department of Cardiology, Hôpital Cardiologique du Haut-Lévêque, CHU de Bordeaux, 33600 Pessac, France
| | - N Sadoul
- Université de Nancy Lorraine, CHU de Nancy, Department of Cardiology, 54511 Vandœuvre-lès-Nancy, France
| | - S Boveda
- Clinique Pasteur, Department of Cardiology, 31076 Toulouse, France
| | - A Jacquier
- Université Aix-Marseille, Centre Hospitalo-Universitaire Timone, AP-HM, Department of Radiology, CNRS, CRMBM, CEMEREM, 13005 Marseille, France
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Lamy S, Colineaux H, Grosclaude P, Despas F, Laurent G, Delpierre C, Lepage B. Les mécanismes d’influence de la comorbidité sur la survie des patients traités pour un lymphome B diffus à grandes cellules dépendent-ils du lieu de traitement ? Une étude en présence de médiateurs multiples causalement ordonnés. Rev Epidemiol Sante Publique 2020. [DOI: 10.1016/j.respe.2020.03.003] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022] Open
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17
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Abstract
Summary
Cross-sectional sampling is often used when investigating inter-event times, resulting in left-truncated and right-censored data. In this paper, we consider a semiparametric truncation model in which the truncating variable is assumed to belong to a certain parametric family. We examine two methods of estimating both the truncation and the lifetime distributions. We obtain asymptotic representations of the estimators for the lifetime distribution and establish their weak convergence. Both of the proposed estimators perform better than Wang’s (1991) nonparametric maximum likelihood estimator in terms of the integrated mean squared error, when the parametric family for the truncation is sufficiently close to its true distribution. The full likelihood approach is preferable to the conditional likelihood approach in estimating the lifetime distribution, though not necessarily the truncation distribution. In an application to Alzheimer’s disease data, hypothesis tests reject the uniform truncation distribution, but several other parametric models lead to similar behaviour of the truncation and lifetime distributions after disease onset.
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Affiliation(s)
- C Heuchenne
- HEC Management School, University of Liège, rue Louvrex 14, 4000 Liège, Belgium
| | - J De Uña-Álvarez
- Department of Statistics and Operations Research, University of Vigo, 36310 Vigo, Spain
| | - G Laurent
- HEC Management School, University of Liège, rue Louvrex 14, 4000 Liège, Belgium
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18
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Koffi KG, Silué DA, Laurent C, Boidy K, Koui S, Compaci G, Adeba ZH, Kamara I, Botty RP, Bognini AS, Sanogo I, Despas F, Laurent G. AMAFRICA, a patient-navigator program for accompanying lymphoma patients during chemotherapy in Ivory Coast: a prospective randomized study. BMC Cancer 2019; 19:1247. [PMID: 31870438 PMCID: PMC6929302 DOI: 10.1186/s12885-019-6478-3] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/18/2019] [Accepted: 12/17/2019] [Indexed: 01/08/2023] Open
Abstract
Background Previous studies have indicated that accompanying socially underserved cancer patients through Patient Navigator (PN) or PN-derived procedures improves therapy management and reassurance. At the Cancer Institute of Toulouse-Oncopole (France), we have implemented AMA (Ambulatory Medical Assistance), a PN-based procedure adapted for malignant lymphoma (ML) patients under therapy. We found that AMA improves adherence to chemotherapy and safety. In low-middle income countries (LMIC), refusal and abandonment were documented as major adverse factors for cancer therapy. We reasoned that AMA could improve clinical management of ML patients in LMIC. Methods This study was set up in the Abidjan University Medical Center (Ivory Coast) in collaboration with Toulouse. One hundred African patients were randomly assigned to either an AMA or control group. Main criteria of judgment were refusal and abandonment of CHOP or ABVD chemotherapy. Results We found that AMA was feasible and had significant impact on refusal and abandonment. However, only one third of patients completed their therapy in both groups. No differences were noted in terms of complete response rate (CR) (16% based on intent-to-treat) and median overall survival (OS) (6 months). The main reason for refusal and abandonment was limitation of financial resources. Conclusion Altogether, this study showed that PN may reduce refusal and abandonment of treatment. However, due to insufficient health care coverage, its ultimate impact on OS remains limited.
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Affiliation(s)
- K G Koffi
- Hematology Teaching Hospital of Yopougon University Medical Center, Abidjan, Côte d'Ivoire.
| | - D A Silué
- Hematology Teaching Hospital of Yopougon University Medical Center, Abidjan, Côte d'Ivoire
| | - C Laurent
- Hematology Department of Toulouse University Medical Center, Toulouse, France
| | - K Boidy
- Hematology Teaching Hospital of Yopougon University Medical Center, Abidjan, Côte d'Ivoire
| | - S Koui
- Hematology Teaching Hospital of Yopougon University Medical Center, Abidjan, Côte d'Ivoire
| | - G Compaci
- Hematology Department of Toulouse University Medical Center, Toulouse, France
| | - Z H Adeba
- Hematology Teaching Hospital of Yopougon University Medical Center, Abidjan, Côte d'Ivoire
| | - I Kamara
- Hematology Teaching Hospital of Yopougon University Medical Center, Abidjan, Côte d'Ivoire
| | - R P Botty
- Hematology Teaching Hospital of Yopougon University Medical Center, Abidjan, Côte d'Ivoire
| | - A S Bognini
- Hematology Teaching Hospital of Yopougon University Medical Center, Abidjan, Côte d'Ivoire
| | - I Sanogo
- Hematology Teaching Hospital of Yopougon University Medical Center, Abidjan, Côte d'Ivoire
| | - F Despas
- Hematology Department of Toulouse University Medical Center, Toulouse, France
| | - G Laurent
- Hematology Department of Toulouse University Medical Center, Toulouse, France
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19
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Guenancia C, Garnier F, Fichot M, Buffet P, Laurent G, Lorgis L. [Interventional management of atrial fibrillation]. Rev Med Interne 2019; 40:722-728. [PMID: 31402183 DOI: 10.1016/j.revmed.2019.07.010] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/17/2019] [Accepted: 07/17/2019] [Indexed: 11/27/2022]
Abstract
In 2030, the European Union will include 14 to 17 million atrial fibrillation (AF) patients, with 120,000 to 215,000 new cases each year. The increase in the prevalence of this arrhythmia has led to the development of new therapeutic intervention strategies to manage the different aspects of this disease. Thus, endocavitary or epicardial ablation of AF, by radiofrequency or cryoablation, provides superior results to antiarrhythmic therapy in controlling symptoms and preventing heart failure in paroxysmal or persistent AF. In heart failure patients with advanced AF, the ablation of the atrioventricular junction associated with the implantation of a bi-ventricular pacemaker has just demonstrated its clear superiority, bringing this technique up to date. Finally, in the event of a major bleeding risk and contraindication to anticoagulants, percutaneous occlusion of the left atrium has proven its value in preventing AF-related embolic events. The future will certainly see the emergence of new technologies but also personalized strategies based on an optimal selection of the right candidates for these interventions, thanks in particular to the contribution of imaging before the procedure.
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Affiliation(s)
- C Guenancia
- University Hospital, Department of Cardiology, 21079 Dijon, France; PEC2, EA 7460, UFR Sciences de Santé, 21000 Dijon, France.
| | - F Garnier
- University Hospital, Department of Cardiology, 21079 Dijon, France
| | - M Fichot
- University Hospital, Department of Cardiology, 21079 Dijon, France
| | - P Buffet
- University Hospital, Department of Cardiology, 21079 Dijon, France
| | - G Laurent
- University Hospital, Department of Cardiology, 21079 Dijon, France
| | - L Lorgis
- University Hospital, Department of Cardiology, 21079 Dijon, France; PEC2, EA 7460, UFR Sciences de Santé, 21000 Dijon, France
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20
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Lamy S, Laurent G, Lepage B, Grosclaude P, Delpierre C. Impact of comorbidity in DBLCL: direct and indirect effects on survival through unplanned chemotherapy dose reduction. J Intern Med 2019; 285:472-474. [PMID: 30681214 DOI: 10.1111/joim.12879] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
Affiliation(s)
- S Lamy
- Inserm, UMR1027, Université Toulouse III, Toulouse, France
| | - G Laurent
- Inserm, UMR1027, Université Toulouse III, Toulouse, France.,Département d'hématologie, Institut Universitaire du Cancer de Toulouse- Oncopole (IUCT-O), Toulouse, France
| | - B Lepage
- Inserm, UMR1027, Université Toulouse III, Toulouse, France.,Service d'Epidémiologie, CHU de Toulouse, Toulouse, France
| | - P Grosclaude
- Inserm, UMR1027, Université Toulouse III, Toulouse, France.,Registre du Cancer du Tarn, Albi, France
| | - C Delpierre
- Inserm, UMR1027, Université Toulouse III, Toulouse, France
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21
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Walburg V, Rueter M, Lamy S, Compaci G, Lapeyre-Mestre M, Laurent G, Despas F. Fear of cancer recurrence in Non- and Hodgkin lymphoma survivors during their first three years of survivorship among French patients. PSYCHOL HEALTH MED 2019; 24:781-787. [PMID: 30714815 DOI: 10.1080/13548506.2019.1574354] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Abstract
The aim of this study was to measure the prevalence of FCR among a sample of French lymphoma survivors and to determine factors associated with clinical levels of FCR. The study was conducted with two cross-sectional measures: sociodemographic and anxiety, depression as well as health-related quality of life (HRQoL) scores were measured at the baseline of the post-cancer period and FCR was evaluated during the first 3 years of survivorship. The prevalence of clinical levels of FCR (≥13) was evaluated by the Fear of Cancer Recurrence Inventory - Short Form (FCRI-SF) among non- and Hodgkin lymphoma survivors undergoing prior first-line chemotherapy. Among 108 lymphoma survivors with an average follow-up of 1.6 years (range 0.3-3.0 years), clinical levels of FCR (≥13) were observed for 44.4% (n = 48). Multivariate analysis indicated that baseline anxiety and low quality of life were related to clinically significant FCR levels.
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Affiliation(s)
- V Walburg
- a Faculty of Literature and Human Sciences , Catholic Institute of Toulouse , Toulouse , France
| | - M Rueter
- b Service of Medical and Clinical Pharmacology, Center of Pharmacovigilance, Pharmaco-epidemiology and Information on Drugs , Toulouse University Hospital , Toulouse , France.,c Faculty of Medicine , INSERM Unit 1027 (French National Institute of Health and Medical Research) , Toulouse , France
| | - S Lamy
- b Service of Medical and Clinical Pharmacology, Center of Pharmacovigilance, Pharmaco-epidemiology and Information on Drugs , Toulouse University Hospital , Toulouse , France.,c Faculty of Medicine , INSERM Unit 1027 (French National Institute of Health and Medical Research) , Toulouse , France.,d Department of Epidemiology, Health Economics and Public Health, Faculty of Medicine , University of Toulouse III Paul Sabatier , Toulouse , France
| | - G Compaci
- e Department of Hematology-Internal Medicine , Toulouse University Hospital, Cancer University Institute of Toulouse Oncopole , Toulouse , France
| | - M Lapeyre-Mestre
- b Service of Medical and Clinical Pharmacology, Center of Pharmacovigilance, Pharmaco-epidemiology and Information on Drugs , Toulouse University Hospital , Toulouse , France.,c Faculty of Medicine , INSERM Unit 1027 (French National Institute of Health and Medical Research) , Toulouse , France.,f Laboratory of Medical and Clinical Pharmacology Faculty of Medicine , University III Paul Sabatier , Toulouse , France.,g INSERM CIC 1436, Clinical Investigation Center , Toulouse University Hospital , Toulouse , France
| | - G Laurent
- c Faculty of Medicine , INSERM Unit 1027 (French National Institute of Health and Medical Research) , Toulouse , France.,e Department of Hematology-Internal Medicine , Toulouse University Hospital, Cancer University Institute of Toulouse Oncopole , Toulouse , France
| | - F Despas
- b Service of Medical and Clinical Pharmacology, Center of Pharmacovigilance, Pharmaco-epidemiology and Information on Drugs , Toulouse University Hospital , Toulouse , France.,c Faculty of Medicine , INSERM Unit 1027 (French National Institute of Health and Medical Research) , Toulouse , France.,f Laboratory of Medical and Clinical Pharmacology Faculty of Medicine , University III Paul Sabatier , Toulouse , France.,g INSERM CIC 1436, Clinical Investigation Center , Toulouse University Hospital , Toulouse , France
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Hilberer A, Laurent G, Lorin A, Partier A, Bobroff J, Bouquet F, Even C, Fischbach JM, Marrache-Kikuchi CA, Monteverde M, Pilett B, Quay Q. Temperature-dependent transport measurements with Arduino. Pap Phys 2018. [DOI: 10.4279/pip.100007] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022] Open
Abstract
The current performances of single-board microcontrollers render them attractive, not only for basic applications, but also for more elaborate projects, amongst which are physics teaching or research. In this article, we show how temperature-dependent transport measurements can be performed by using an Arduino board, from cryogenic temperatures up to room temperature or above. We focus on two of the main issues for this type of experiments: the determination of the sample temperature and the measurement of its resistance. We also detail two student-led experiments: evidencing the magnetocaloric effect in Gadolinium and measuring the resistive transition of a high critical temperature superconductor.
Received: 7 July 2018, Accepted: 27 September 2018; Edited by: A. Marti, M. Monteiro; Reviewed by: R. Marotti, Instituto de Física, Facultad de Ingeniería - Universidad de la República, Uruguay; DOI: http://dx.doi.org/10.4279/PIP.100007
Cite as: A Hilberer, G Laurent, A Lorin, A Partier, J Bobroff, F Bouquet, C Even, J M Fischbach, C A Marrache Kikuchi, M Monteverde, B Pilette, Q Quay, Papers in Physics 10, 100007(2018)
This paper, by A Hilberer, G Laurent, A Lorin, A Partier, J Bobroff, F Bouquet, C Even, J M Fischbach, C A Marrache Kikuchi, M Monteverde, B Pilette, Q Quay, is licensed under the Creative Commons Attribution License 4.0.
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Lamy S, Grosclaude P, Despas F, Laurent G, Lepage B, Delpierre C. Effect modification of the treatment efficacy by comorbidity using “real-life” data from a French cohort of patients treated for DLBCL. Rev Epidemiol Sante Publique 2018. [DOI: 10.1016/j.respe.2018.05.501] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022] Open
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24
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Lamy S, Grosclaude P, Despas F, Laurent G, Lepage B, Delpierre C. Effet modificateur de la comorbidité sur l’efficacité de la chimiothérapie : une étude observationnelle chez des patients traités pour un lymphome B diffus à grandes cellules en Midi-Pyrénées. Rev Epidemiol Sante Publique 2018. [DOI: 10.1016/j.respe.2018.03.363] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022] Open
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Barrez E, Laurent G, Pavageau C, Sliwa M, Métivier R. Comparative photophysical investigation of doubly-emissive photochromic-fluorescent diarylethenes. Phys Chem Chem Phys 2018; 20:2470-2479. [PMID: 29313042 DOI: 10.1039/c7cp06541h] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Diarylethene molecules showing photochromism and fluorescence properties in both open and closed forms, associated with two different emission colors, are very promising for applications involving ratiometric emissive photoswitches. We report here a complete study on the competition between the multiple photophysical processes involved in the excited states for two sulfone derivatives of benzothiophene-based diarylethene molecules, only differing by the substituent groups on their reactive carbon (methyl for DAE-Me and ethyl for DAE-Et). Steady-state and time-resolved spectroscopy, combined with DFT and TD-DFT calculations, allow a complete determination of the kinetic constants leading to fluorescence and photoreaction pathways in different solvents, and enlighten the specific role of the substituent group in the photophysical properties due to a shielding effect against the solvation environment. The predominant role of the non-radiative deactivation processes in such a family of molecules is shown, and a tentative excited state mechanistic scheme is proposed based on femtosecond transient absorption experiments performed on the closed forms.
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Affiliation(s)
- E Barrez
- ENS Cachan, CNRS, Université Paris-Saclay, UMR 8531, PPSM, Photophysique et Photochimie Supramoléculaires et Macromoléculaires, 94235 Cachan, France.
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Probst V, Gourraud J, Thollet A, Briand J, Tixier R, Berthome P, Geoffroy O, Laurent G, Pasquie J, Mansourati J, Babuty D, Behar N, Guyomarch B, Sacher F, Mabo P. P2323Brugada syndrome in women. Eur Heart J 2017. [DOI: 10.1093/eurheartj/ehx502.p2323] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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27
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Dimitrov Y, Richter S, Laurent G, Kribs M. La séroprotection après vaccination contre l’hépatite B disparaît rapidement chez les insuffisants rénaux non dialysés. Nephrol Ther 2016. [DOI: 10.1016/j.nephro.2016.07.247] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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28
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Lamy S, Bettiol C, Grosclaude P, Compaci G, Albertus G, Récher C, Nogaro JC, Despas F, Laurent G, Delpierre C. The care center influences the management of lymphoma patients in a universal health care system: an observational cohort study. BMC Health Serv Res 2016; 16:336. [PMID: 27485349 PMCID: PMC4969648 DOI: 10.1186/s12913-016-1553-9] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/12/2016] [Accepted: 07/12/2016] [Indexed: 02/07/2023] Open
Abstract
Background Healthcare providers-related disparities in adherence to the treatment plan among lymphoma patients are found even in a universal healthcare system, but the mechanism remains unclear. We investigated the association between the type of care center and the relative dose intensity and determined whether it persists after adjustment for patients’ recruitment differences. Methods Prospective observational cohort study of 294 patients treated with standard protocols for diffuse large B-cell lymphoma (DLBCL) in teaching or community public hospitals or in private centers in the French Midi-Pyrénées region from 2006–2013. To test our assumptions, we used multinomial and mixed-effect logistic models progressively adjusted for patients’ biomedical characteristics, socio-spatial characteristics and treatment-related toxicity events. Results Patients treated using standard protocols in the teaching hospital had more advanced stage and poorer initial prognosis without limitation regarding the distance from the residence to the care center. Patients’ recruitment profile across the different types of care center failed to explain the difference in relative dose intensity. Low relative dose intensity was less often observed in teaching hospital than elsewhere. Conclusion We showed that even in a universal healthcare system, disparities in the management of DLBCL patients’ do exist according to the types of care center. A main issue may be to find and diffuse the reasons of this benefit in cancer management in the teaching hospital to the other centers.
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Affiliation(s)
- S Lamy
- University of Toulouse III Paul Sabatier, Toulouse, France. .,Department of Clinical Pharmacology, Toulouse University Hospital, Toulouse, France. .,INSERM UMR1027 (The French National Institute of Health and Medical Research), Toulouse, France.
| | - C Bettiol
- Department of Hematology, Toulouse University Hospital, Toulouse University Cancer Institute (IUCT-O), Toulouse, France
| | - P Grosclaude
- INSERM UMR1027 (The French National Institute of Health and Medical Research), Toulouse, France.,Tarn Cancers Registry, Albi, France
| | - G Compaci
- Department of Hematology, Toulouse University Hospital, Toulouse University Cancer Institute (IUCT-O), Toulouse, France
| | - G Albertus
- INSERM UMR1027 (The French National Institute of Health and Medical Research), Toulouse, France
| | - C Récher
- University of Toulouse III Paul Sabatier, Toulouse, France.,Department of Hematology, Toulouse University Hospital, Toulouse University Cancer Institute (IUCT-O), Toulouse, France.,INSERM UMR1037 (The French National Institute of Health and Medical Research), Cancer Research Center of Toulouse, Toulouse, France
| | - J C Nogaro
- Department of Hematology, Toulouse University Hospital, Toulouse University Cancer Institute (IUCT-O), Toulouse, France
| | - F Despas
- University of Toulouse III Paul Sabatier, Toulouse, France.,Department of Clinical Pharmacology, Toulouse University Hospital, Toulouse, France.,INSERM UMR1027 (The French National Institute of Health and Medical Research), Toulouse, France
| | - G Laurent
- University of Toulouse III Paul Sabatier, Toulouse, France.,Department of Hematology, Toulouse University Hospital, Toulouse University Cancer Institute (IUCT-O), Toulouse, France.,INSERM UMR1037 (The French National Institute of Health and Medical Research), Cancer Research Center of Toulouse, Toulouse, France
| | - C Delpierre
- INSERM UMR1027 (The French National Institute of Health and Medical Research), Toulouse, France
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Abstract
A partir d'une étude paneuropéenne portant sur 12 500 consommateurs et leurs attitudes vis-à-vis de 30 marques internationales, le présent article compare le pouvoir segmentant d'un ensemble d'indicateurs géographiques et socio-économiques susceptibles d'éclairer l'achat de marques de luxe. Bien que certaines différences entre les pays européens soient observées, les résultats obtenus révèlent que le revenu, le niveau d'éducation et la catégorie professionnelle différencient les consommateurs mieux que leur affiliation nationale. Dans cette mesure, on doit conclure à l'existence d'un euroconsommateur du luxe dont le portrait robot peut être dressé avec une relative précision
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Laurent G, Bernhard C, Dufort S, Jiménez Sánchez G, Bazzi R, Boschetti F, Moreau M, Vu TH, Collin B, Oudot A, Herath N, Requardt H, Laurent S, Vander Elst L, Muller R, Dutreix M, Meyer M, Brunotte F, Perriat P, Lux F, Tillement O, Le Duc G, Denat F, Roux S. Minor changes in the macrocyclic ligands but major consequences on the efficiency of gold nanoparticles designed for radiosensitization. Nanoscale 2016; 8:12054-12065. [PMID: 27244570 DOI: 10.1039/c6nr01228k] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
Many studies have been devoted to adapting the design of gold nanoparticles to efficiently exploit their promising capability to enhance the effects of radiotherapy. In particular, the addition of magnetic resonance imaging modality constitutes an attractive strategy for enhancing the selectivity of radiotherapy since it allows the determination of the most suited delay between the injection of nanoparticles and irradiation. This requires the functionalization of the gold core by an organic shell composed of thiolated gadolinium chelates. The risk of nephrogenic systemic fibrosis induced by the release of gadolinium ions should encourage the use of macrocyclic chelators which form highly stable and inert complexes with gadolinium ions. In this context, three types of gold nanoparticles (Au@DTDOTA, Au@TADOTA and Au@TADOTAGA) combining MRI, nuclear imaging and radiosensitization have been developed with different macrocyclic ligands anchored onto the gold cores. Despite similarities in size and organic shell composition, the distribution of gadolinium chelate-coated gold nanoparticles (Au@TADOTA-Gd and Au@TADOTAGA-Gd) in the tumor zone is clearly different. As a result, the intravenous injection of Au@TADOTAGA-Gd prior to the irradiation of 9L gliosarcoma bearing rats leads to the highest increase in lifespan whereas the radiophysical effects of Au@TADOTAGA-Gd and Au@TADOTA-Gd are very similar.
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Affiliation(s)
- G Laurent
- Institut UTINAM, UMR 6213 CNRS-UBFC, Université de Bourgogne Franche-Comté, 25030 Besançon Cedex, France.
| | - C Bernhard
- Institut de Chimie Moléculaire de l'Université de Bourgogne (ICMUB), UMR 6302 CNRS-UBFC, Université de Bourgogne Franche-Comté, 21078 Dijon Cedex, France
| | - S Dufort
- Nano-H S.A.S, 2 Place de l'Europe, 38070 Saint Quentin-Fallavier, France
| | - G Jiménez Sánchez
- Institut UTINAM, UMR 6213 CNRS-UBFC, Université de Bourgogne Franche-Comté, 25030 Besançon Cedex, France.
| | - R Bazzi
- Institut UTINAM, UMR 6213 CNRS-UBFC, Université de Bourgogne Franche-Comté, 25030 Besançon Cedex, France.
| | | | - M Moreau
- Institut de Chimie Moléculaire de l'Université de Bourgogne (ICMUB), UMR 6302 CNRS-UBFC, Université de Bourgogne Franche-Comté, 21078 Dijon Cedex, France
| | - T H Vu
- Institut de Chimie Moléculaire de l'Université de Bourgogne (ICMUB), UMR 6302 CNRS-UBFC, Université de Bourgogne Franche-Comté, 21078 Dijon Cedex, France
| | - B Collin
- Institut de Chimie Moléculaire de l'Université de Bourgogne (ICMUB), UMR 6302 CNRS-UBFC, Université de Bourgogne Franche-Comté, 21078 Dijon Cedex, France and Plateforme d'imagerie préclinique, Centre Georges-François Leclerc, 21079 Dijon Cedex, France
| | - A Oudot
- Plateforme d'imagerie préclinique, Centre Georges-François Leclerc, 21079 Dijon Cedex, France
| | - N Herath
- Recombinaison, réparation et cancer: de la molécule au patient, Institut Curie, UMR CNRS 3347 - Inserm U1021, 91405 Orsay, France
| | - H Requardt
- ID17 Biomedical Beamline, European Synchrotron Radiation Facility, 38000 Grenoble, France
| | - S Laurent
- NMR Laboratory, Université de Mons, 7000 Mons, Belgium
| | - L Vander Elst
- NMR Laboratory, Université de Mons, 7000 Mons, Belgium
| | - R Muller
- NMR Laboratory, Université de Mons, 7000 Mons, Belgium
| | - M Dutreix
- Recombinaison, réparation et cancer: de la molécule au patient, Institut Curie, UMR CNRS 3347 - Inserm U1021, 91405 Orsay, France
| | - M Meyer
- Institut de Chimie Moléculaire de l'Université de Bourgogne (ICMUB), UMR 6302 CNRS-UBFC, Université de Bourgogne Franche-Comté, 21078 Dijon Cedex, France
| | - F Brunotte
- Plateforme d'imagerie préclinique, Centre Georges-François Leclerc, 21079 Dijon Cedex, France
| | - P Perriat
- Matériaux Ingénierie et Science, UMR 5510 CNRS-INSA, INSA de Lyon, 69621 Villeurbanne Cedex, France
| | - F Lux
- Institut Lumière Matière, UMR 5306 CNRS-UCBL, Université de Lyon, 69622 Villeurbanne Cedex, France
| | - O Tillement
- Institut Lumière Matière, UMR 5306 CNRS-UCBL, Université de Lyon, 69622 Villeurbanne Cedex, France
| | - G Le Duc
- ID17 Biomedical Beamline, European Synchrotron Radiation Facility, 38000 Grenoble, France
| | - F Denat
- Institut de Chimie Moléculaire de l'Université de Bourgogne (ICMUB), UMR 6302 CNRS-UBFC, Université de Bourgogne Franche-Comté, 21078 Dijon Cedex, France
| | - S Roux
- Institut UTINAM, UMR 6213 CNRS-UBFC, Université de Bourgogne Franche-Comté, 25030 Besançon Cedex, France.
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Grgurevic S, Berquet L, Quillet-Mary A, Laurent G, Récher C, Ysebaert L, Cazaux C, Hoffmann JS. 3R gene expression in chronic lymphocytic leukemia reveals insight into disease evolution. Blood Cancer J 2016; 6:e429. [PMID: 27258610 PMCID: PMC5141354 DOI: 10.1038/bcj.2016.39] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023] Open
Affiliation(s)
- S Grgurevic
- INSERM, U1037, CRCT, Toulouse, France.,University Toulouse III Paul Sabatier, U1037, CRCT, Toulouse, France.,CNRS, ERL5294, CRCT, Toulouse, France.,Equipe 'Labellisée LA LIGUE CONTRE LE CANCER 2013', Toulouse, France.,Laboratoire d'Excellence Toulouse Cancer Labex Toucan, CRCT, Inserm U1037, CNRS ERL5294, Toulouse, France
| | - L Berquet
- INSERM, U1037, CRCT, Toulouse, France.,University Toulouse III Paul Sabatier, U1037, CRCT, Toulouse, France.,CNRS, ERL5294, CRCT, Toulouse, France
| | - A Quillet-Mary
- INSERM, U1037, CRCT, Toulouse, France.,University Toulouse III Paul Sabatier, U1037, CRCT, Toulouse, France.,CNRS, ERL5294, CRCT, Toulouse, France.,Laboratoire d'Excellence Toulouse Cancer Labex Toucan, CRCT, Inserm U1037, CNRS ERL5294, Toulouse, France
| | - G Laurent
- INSERM, U1037, CRCT, Toulouse, France.,University Toulouse III Paul Sabatier, U1037, CRCT, Toulouse, France.,CNRS, ERL5294, CRCT, Toulouse, France.,Laboratoire d'Excellence Toulouse Cancer Labex Toucan, CRCT, Inserm U1037, CNRS ERL5294, Toulouse, France.,Department of Hematology, Institut Universitaire du Cancer (IUC), Toulouse, France
| | - C Récher
- INSERM, U1037, CRCT, Toulouse, France.,University Toulouse III Paul Sabatier, U1037, CRCT, Toulouse, France.,Laboratoire d'Excellence Toulouse Cancer Labex Toucan, CRCT, Inserm U1037, CNRS ERL5294, Toulouse, France.,Department of Hematology, Institut Universitaire du Cancer (IUC), Toulouse, France
| | - L Ysebaert
- INSERM, U1037, CRCT, Toulouse, France.,University Toulouse III Paul Sabatier, U1037, CRCT, Toulouse, France.,CNRS, ERL5294, CRCT, Toulouse, France.,Laboratoire d'Excellence Toulouse Cancer Labex Toucan, CRCT, Inserm U1037, CNRS ERL5294, Toulouse, France.,Department of Hematology, Institut Universitaire du Cancer (IUC), Toulouse, France
| | | | - J S Hoffmann
- INSERM, U1037, CRCT, Toulouse, France.,University Toulouse III Paul Sabatier, U1037, CRCT, Toulouse, France.,CNRS, ERL5294, CRCT, Toulouse, France.,Equipe 'Labellisée LA LIGUE CONTRE LE CANCER 2013', Toulouse, France.,Laboratoire d'Excellence Toulouse Cancer Labex Toucan, CRCT, Inserm U1037, CNRS ERL5294, Toulouse, France
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Lamy S, Albertus G, Grosclaude P, Bettiol C, Compaci G, Récher C, Nogaro JC, Despas F, Laurent G, Delpierre C. Étude de l’effet du centre de traitement sur l’adhésion au plan de traitement dans le lymphome B diffus à grandes cellules : une analyse multiniveau d’une cohorte observationnelle en région Midi-Pyrénées en onco-hématologie. Rev Epidemiol Sante Publique 2016. [DOI: 10.1016/j.respe.2016.03.090] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022] Open
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Moulis G, Luxembourger C, Tournier E, Pugnet G, Astudillo L, Laurent G, Arlet P, Sailler L, Samson M. La cerise sur le gâteau. Rev Med Interne 2016; 37:292-5. [DOI: 10.1016/j.revmed.2015.06.010] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/08/2015] [Accepted: 06/09/2015] [Indexed: 12/17/2022]
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Celhay O, Laurent G, Alioui A, Trousson A, Kemeny L, Pereira B, Leoni V, Lobaccaro J, Baron S. Comparaison appariée des flux du cholestérol cellulaire dans les tissus sains et cancéreux prostatiques : résultats de l’étude Chomecap. Prog Urol 2015; 25:727-8. [DOI: 10.1016/j.purol.2015.08.025] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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Polguer T, Laurent G, Devoize L, Dallel R. Urodynamique pyélique et réponse comportementale dans la colique néphrétique lithiasique chez le rat : effet du kétoprofène, d’un inhibiteur purinergique et de la décapsulation rénale. Prog Urol 2015; 25:749. [DOI: 10.1016/j.purol.2015.08.069] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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Lunven M, Correia S, Migliaccio R, Duret C, Blanchard M, Laurent G, Bartolomeo P, Bourlon C. Recuperation of daily activities and quality of life after stroke: The EAVQ-QdV scale. Ann Phys Rehabil Med 2015. [DOI: 10.1016/j.rehab.2015.07.024] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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Dimitrov Y, Ducher M, Kribs M, Laurent G, Richter S, Fauvel J. Principaux facteurs impliqués dans le succès de la vaccination contre l’hépatite B chez les patients atteints d’insuffisance rénale non dialysés. Nephrol Ther 2015. [DOI: 10.1016/j.nephro.2015.07.394] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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Charra B, Laurent G, Calemard E, Terrat JC, Vanel T, Ruffet M, Chazot C. Survival in dialysis and blood pressure control. Contrib Nephrol 2015; 106:179-85. [PMID: 8174368 DOI: 10.1159/000422948] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
Affiliation(s)
- B Charra
- Centre de Rein Artificiel, Tassin, France
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Nonclercq D, Wrona S, Toubeau G, Zanen J, Heuson-Stiennon JA, Schaudies RP, Laurent G. Immunohistochemical study of epidermal growth factor in the rat kidney after gentamicin-induced tubular injury. Contrib Nephrol 2015; 101:206-12. [PMID: 8467677 DOI: 10.1159/000422133] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/30/2023]
Affiliation(s)
- D Nonclercq
- Service d'Histologie et de Cytologie Expérimentale, Faculté de Médecine, Université de Mons-Hainaut, Mons, Belgium
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Kishore BK, Van Schepdael A, Laurent G, Lambricht P, Claes PJ, Piret J, Tulkens PM, Maldague P. Co-oxydextran as a protectant against gentamicin-induced renal lysosomal phospholipidosis and focal tubular necrosis. Perspectives and limitations. Contrib Nephrol 2015; 101:213-9. [PMID: 7682169 DOI: 10.1159/000422134] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
Affiliation(s)
- B K Kishore
- Laboratoire de Chimie Physiologique, Université Catholique de Louvain, Belgium
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Kishore BK, Lambricht P, Ibrahim S, Laurent G, Tulkens PM, Maldague P. Inhibition of aminoglycoside-induced nephrotoxicity in rats by polyanionic peptides. Contrib Nephrol 2015; 83:191-201. [PMID: 1713134 DOI: 10.1159/000418798] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
In the present study, we compared poly-L-Asp with poly-L-Glu and poly-D-Glu in vitro and in vivo for their ability to inhibit the GM-induced nephrotoxicity. In vitro, all three polyanions (i) bound GM over a wide range of pH; (ii) displaced GM previously bound to negatively charged phospholipid bilayers at acid pH (i.e. under the conditions prevailing in lysosomes in vivo), and thereby (iii) decreased the inhibitory potency of GM towards lysosomal phospholipase A1. Thus, one was tempted to predict that all three polyanions would have the potential of protecting against AG-induced nephrotoxicity. However, when co-administered to rats with GM, poly-L-Asp and poly-D-Glu completely suppressed the development of lysosomal phospholipidosis, as assessed by biochemical criteria and increased drug accumulation, whereas poly-L-Glu did not offer such protection despite a relatively lower increase in drug accumulation levels. Histoautoradiography also confirmed that poly-L-Asp, but not poly-L-Glu, was a nephroprotectant against the tissue proliferative response induced by GM. Morphologically, poly-L-Asp almost completely and poly-D-Glu totally prevented the accumulation of myeloid bodies in lysosomes. In vitro incubation in the presence of purified lysosomal extracts revealed marked differences in the hydrolysis rate of these peptides (poly-D-Glu:poly-L-Asp:poly-L-Glu = 1:1.2:16.9). Assuming that all three polyanionic peptides are transported and accumulated in lysosomes to the same extent, these results not only suggest that their stability in lysosomes is an essential requisite for protection against lysosomal phospholipidosis, but also strengthen our hypothesis that the site of action of poly-L-Asp is inside the lysosomes but not at the level of the renal membranes. In addition, poly-D-Glu alone or combined with GM induced another type of morphological lesion, not related to AG-induced nephrotoxicity which, to our knowledge, has not yet been described.
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Affiliation(s)
- B K Kishore
- Laboratoire de Chimie Physiologique, Université Catholique de Louvain, Bruxelles, Belgium
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Eicher JC, Berthier S, Aho LS, Lorcerie B, Bonnotte B, Laurent G. Measurement of interatrial dyssynchrony using tissue Doppler imaging predicts functional capacity and cardiac involvement in systemic sclerosis. Clin Exp Rheumatol 2014; 32:S-171-6. [PMID: 25372800] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/03/2014] [Accepted: 07/07/2014] [Indexed: 06/04/2023]
Abstract
OBJECTIVES We aimed to assess the prevalence of interatrial electromechanical dyssynchrony in systemic sclerosis (SSc) patients, and to study the correlation between interatrial delay and standard follow-up parameters. METHODS Forty consecutive patients with SSc were studied. Classical echocardiographic measurements were obtained, including indices of left ventricular (LV) systolic and diastolic function, right ventricular function, and pulmonary artery pressure (PAP). Left atrial (LA) function was studied using volume measurements. The interatrial mechanical (IAMD) delay was obtained by measuring the time delay between the peak atrial velocities at the lateral tricuspid and mitral annuli using tissue Doppler imaging. A cut-off value of 35 ms was chosen to define the presence of a significant interatrial delay. The IAMD was compared to NYHA class, six-minute walking test (6MWT), NT proBNP levels, and the carbon monoxide diffusion capacity over alveolar volume ratio (DLCO/VA), as well as to classical echocardiographic parameters. RESULTS Forty percent of patients were found to have significant interatrial dyssynchrony with an IAMD of 35 ms or more. Patients with interatrial dyssynchrony were more symptomatic, had a shorter 6MWT, higher NT proBNP levels, and a lower DLCO/VA compared with those without dyssynchrony. Regarding conventional echocardiographic parameters, increased IAMD was associated with more pronounced LV diastolic dysfunction, LA enlargement and dysfunction, altered RV function, and higher PAP. CONCLUSIONS IAMD correlated with all of the standard follow-up parameters in SSc, and is probably a sensitive marker of LA involvement. This easy to measure parameter should be added to the routine echocardiographic assessment of these patients.
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Affiliation(s)
- J-C Eicher
- Department of Cardiology, Rhythmology and Heart Failure Unit, Hôpital Bocage Central, CHU de Dijon, France.
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Kheirallah S, Fruchon S, Ysebaert L, Blanc A, Capilla F, Marrot A, Alsaati T, Frenois FX, Benhadji KA, Fournié JJ, Laurent G, Bezombes C. The serine-threonine kinase p90RSK is a new target of enzastaurin in follicular lymphoma cells. Br J Pharmacol 2014; 170:1374-83. [PMID: 23992368 DOI: 10.1111/bph.12351] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/05/2012] [Revised: 05/23/2013] [Accepted: 06/07/2013] [Indexed: 12/17/2022] Open
Abstract
BACKGROUND AND PURPOSE Follicular lymphoma is the second most common non-Hodgkin's lymphoma and, despite the introduction of rituximab for its treatment, this disease is still considered incurable. Besides genetic alterations involving Bcl-2, Bcl-6 or c-Myc, follicular lymphoma cells often display altered B-cell receptor signalling pathways including overactive PKC and PI3K/Akt systems. EXPERIMENTAL APPROACH The effect of enzastaurin, an inhibitor of PKC, was evaluated both in vitro on follicular lymphoma cell lines and in vivo on a xenograft murine model. Using pharmacological inhibitors and siRNA transfection, we determined the different signalling pathways after enzastaurin treatment. KEY RESULTS Enzastaurin inhibited the serine-threonine kinase p90RSK which has downstream effects on GSK3β. Bad and p70S6K. These signalling proteins control follicular lymphoma cell survival and apoptosis; which accounted for the inhibition by enzastaurin of cell survival and its induction of apoptosis of follicular lymphoma cell lines in vitro. Importantly, these results were replicated in vivo where enzastaurin inhibited the growth of follicular lymphoma xenografts in mice. CONCLUSIONS AND IMPLICATIONS The targeting of p90RSK by enzastaurin represents a new therapeutic option for the treatment of follicular lymphoma.
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Affiliation(s)
- S Kheirallah
- INSERM UMR1037-Centre de Recherche en Cancérologie de Toulouse, Toulouse, France; Université Toulouse III Paul-Sabatier, Toulouse, France; ERL 5294 CNRS, BP3028, Hôpital Purpan, Toulouse, France; Institut Carnot Lymphome-CALYM, Toulouse, France; Laboratoire d'Excellence Toulouse Cancer-TOUCAN, Toulouse, France
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Ouhenia-Ouadahi K, Yasukuni R, Yu P, Laurent G, Pavageau C, Grand J, Guérin J, Léaustic A, Félidj N, Aubard J, Nakatani K, Métivier R. Photochromic–fluorescent–plasmonic nanomaterials: towards integrated three-component photoactive hybrid nanosystems. Chem Commun (Camb) 2014; 50:7299-302. [DOI: 10.1039/c4cc02179g] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Silica-coated gold nanorods functionalized with grafted fluorescent and photochromic derivatives were synthesized and cross-coupled interactions between plasmonic, photochromic, and fluorescence properties have been demonstrated.
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Affiliation(s)
| | - R. Yasukuni
- Laboratoire PPSM
- ENS-Cachan
- CNRS
- 94235 Cachan cedex, France
- Laboratoire ITODYS
| | - P. Yu
- ICMMO
- Université Paris-Sud
- 91405 Orsay cedex, France
| | - G. Laurent
- Laboratoire PPSM
- ENS-Cachan
- CNRS
- 94235 Cachan cedex, France
| | - C. Pavageau
- Laboratoire PPSM
- ENS-Cachan
- CNRS
- 94235 Cachan cedex, France
| | - J. Grand
- Laboratoire ITODYS
- Univ Paris Diderot
- Sorbonne Paris Cité
- 75205 Paris Cedex 13, France
| | - J. Guérin
- ICMMO
- Université Paris-Sud
- 91405 Orsay cedex, France
| | - A. Léaustic
- ICMMO
- Université Paris-Sud
- 91405 Orsay cedex, France
| | - N. Félidj
- Laboratoire ITODYS
- Univ Paris Diderot
- Sorbonne Paris Cité
- 75205 Paris Cedex 13, France
| | - J. Aubard
- Laboratoire ITODYS
- Univ Paris Diderot
- Sorbonne Paris Cité
- 75205 Paris Cedex 13, France
| | - K. Nakatani
- Laboratoire PPSM
- ENS-Cachan
- CNRS
- 94235 Cachan cedex, France
| | - R. Métivier
- Laboratoire PPSM
- ENS-Cachan
- CNRS
- 94235 Cachan cedex, France
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Abstract
In this work we propose a novel procedure for the characterization of attosecond pulses. The method relies on the conversion of the attosecond pulse into electron wave-packets through photoionization of atoms in the presence of a weak IR field. It allows for the unique determination of the spectral phase making up the pulses by accurately taking into account the atomic physics of the photoionization process. The phases are evaluated by optimizing the fit of a perturbation theory calculation to the experimental result. The method has been called iPROOF (improved Phase Retrieval by Omega Oscillation Filtering) as it bears a similarity to the PROOF technique [Chini et al. Opt. Express 18, 13006 (2010)]. The procedure has been demonstrated for the characterization of an attosecond pulse train composed of odd and even harmonics. We observe a large phase shift between consecutive odd and even harmonics. The resulting attosecond pulse train has a complex structure not resembling a single attosecond pulse once per IR period, which is the case for zero phase. Finally, the retrieval procedure can be applied to the characterization of single attosecond pulses as well.
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Affiliation(s)
- G Laurent
- James R Macdonald Laboratory, Physics Department, Kansas State University, Manhattan, Kansas 66506, USA.
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Yang MH, Laurent G, Bause AS, Spang R, German N, Haigis MC, Haigis KM. HDAC6 and SIRT2 regulate the acetylation state and oncogenic activity of mutant K-RAS. Mol Cancer Res 2013; 11:1072-7. [PMID: 23723075 DOI: 10.1158/1541-7786.mcr-13-0040-t] [Citation(s) in RCA: 100] [Impact Index Per Article: 9.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
Abstract
UNLABELLED Activating point mutations in K-RAS are extremely common in cancers of the lung, colon, and pancreas and are highly predictive of poor therapeutic response. One potential strategy for overcoming the deleterious effects of mutant K-RAS is to alter its posttranslational modification. Although therapies targeting farnesylation have been explored, and have ultimately failed, the therapeutic potential of targeting other modifications remains to be seen. Recently, it was shown that acetylation of lysine 104 attenuates K-RAS transforming activity by interfering with GEF-induced nucleotide exchange. Here, the deacetylases HDAC6 and SIRT2 were shown to regulate the acetylation state of K-RAS in cancer cells. By extension, inhibition of either of these enzymes has a dramatic impact on the growth properties of cancer cells expressing activation mutants of K-RAS. These results suggest that therapeutic targeting of HDAC6 and/or SIRT2 may represent a new way to treat cancers expressing mutant forms of K-RAS. IMPLICATIONS This study suggests that altering K-RAS acetylation is a feasible approach to limiting tumorigenic potential.
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Affiliation(s)
- Moon Hee Yang
- Molecular Pathology Unit, Center for Cancer Research, and Center for Systems Biology, Massachusetts General Hospital, 149 13 Street, Charlestown, MA 02129.
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Lechien JR, Kindt N, Costa PDA, Chantrain G, Preillon J, Laurent G, Saussez S. [MIF in head and neck cancer: a new therapeutic target ?]. Rev Laryngol Otol Rhinol (Bord) 2013; 134:67-74. [PMID: 24683815] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
Macrophage migration inhibitory factor is a critical proinflammatory cytokine produced by cells of innate and adaptive immune system. MIF plays a key role in cell cycle regulation and in the pathogenesis of many cancers. Recently, MIF has been studied in the upper aerodigestive tract cancer for its involvement in tumor progression, invasion, proliferation and cell motility. In addition, MIF appears to be a mediator in angiogenesis and in the development of metastasis and locoregional lymph node, which are often associated with a poor prognosis. The mechanisms of action responsible for MIF involvement in tumor progression are not completely elucidated. However, the main effects of MIF are mediated by the CD74 receptor. MIF binding to its receptor is responsible for the activation of several signaling pathways (ERK1/2 - MAPK, JAB1 - CSN5, PI3K - Akt), the inhibition of p53 and the stimulation of angiogenic factors including VEGF and IL-8. The overexpression of MIF also causes a reduction of the anti-tumor activity of the immune system. Finally, MIF could be an interesting biomarker in the diagnosis and monitoring of upper aerodigestive tract cancers. In this paper, we assess the state of knowledge of MIF involvement in upper aero-digestive tract cancers and we analyze the therapeutic perspectives.
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Bulai Livideanu C, Tournier E, Laurent C, Sans B, Laroche M, Lamant L, Chandesris MO, Barete S, Hermine O, Laurent G, Paul C. Évaluation de l’atteinte cutanée mastocytaire sous Interféron alpha. Ann Dermatol Venereol 2012. [DOI: 10.1016/j.annder.2012.10.524] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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Tatler AL, Saini G, Goodwin A, Gbolohan O, Clifford RL, Al’Hourani M, Porte J, Violette S, Weinreb P, Knox A, Laurent G, Wolters P, Gauldie J, Kolb M, Jenkins G. S69 Transcriptional Mechanisms Regulating Expression of the Avb6 Integrin in IPF. Thorax 2012. [DOI: 10.1136/thoraxjnl-2012-202678.075] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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Laurent G, Cao W, Li H, Wang Z, Ben-Itzhak I, Cocke CL. Attosecond control of orbital parity mix interferences and the relative phase of even and odd harmonics in an attosecond pulse train. Phys Rev Lett 2012; 109:083001. [PMID: 23002742 DOI: 10.1103/physrevlett.109.083001] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/19/2012] [Indexed: 06/01/2023]
Abstract
We experimentally demonstrate that atomic orbital parity mix interferences can be temporally controlled on an attosecond time scale. Electron wave packets are formed by ionizing argon gas with a comb of odd and even high-order harmonics, in the presence of a weak infrared field. Consequently, a mix of energy-degenerate even and odd parity states is fed in the continuum by one- and two-photon transitions. These interfere, leading to an asymmetric electron emission along the polarization vector. The direction of the emission can be controlled by varying the time delay between the comb and infrared field pulses. We show that such asymmetric emission provides information on the relative phase of consecutive odd and even order harmonics in the attosecond pulse train.
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Affiliation(s)
- G Laurent
- Physics Department, James R. Macdonald Laboratory, Kansas State University, Manhattan, Kansas 66506, USA.
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