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Bourmaud A, Fianu A, Kervran C, Verga-Gérard A, Fournel I, Dumas A, Mancini J, Alla F, Omorou A, Giraudeau B. Corrigendum de l'article « Version française des recommandations de la déclaration d'Ottawa sur la conception et la conduite éthique d'essais randomisés en clusters, dans le contexte législatif français » [RESPE 71 (2023) 101847]. Rev Epidemiol Sante Publique 2023; 71:102188. [PMID: 37939627 DOI: 10.1016/j.respe.2023.102188] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2023] Open
Affiliation(s)
- A Bourmaud
- Unité d'épidémiologie clinique, CIC-EC 1426, Hôpital Universitaire Robert Debré, AP-HP, Paris et Université Paris-Cité, Paris, France.
| | - A Fianu
- Inserm CIC1410, CHU Réunion, Saint-Pierre, France/CERPOP, Université de Toulouse, Inserm, UPS, Toulouse, France
| | - C Kervran
- Equipe MeRISP, Inserm UMR U1219, Bordeaux Population Health Research Center (BPH), Université de Bordeaux, Bordeaux, France
| | - A Verga-Gérard
- CIC-EC 1433, Nancy, Inserm ; RECaP/ F-CRIN, Nancy, France
| | - I Fournel
- CHU Dijon Bourgogne, Inserm, Université de Bourgogne, CIC 1432, Module Épidémiologie Clinique, F21000 Dijon, France
| | - A Dumas
- Université Paris-Cité, ECEVE UMR 1123, Inserm, Paris, France
| | - J Mancini
- Aix Marseille Université, AP-HM, Inserm, IRD, ISSPAM, SESSTIM, BioSTIC, Marseille, France
| | - F Alla
- Université de Bordeaux, Inserm U1218, Bordeaux 33000, France ; Prevention Department, Centre hospitalier universitaire de Bordeaux, France
| | - A Omorou
- CHRU-Nancy, Inserm, Université de Lorraine, CIC, Epidémiologie clinique, F-54000 Nancy, France
| | - B Giraudeau
- Université de Tours, Université de Nantes, Inserm, SPHERE U1246, Tours, France ; INSERM CIC1415, CHRU de Tours, Tours, France
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Bourmaud A, Fianu A, Kervan C, Verga-Gérard A, Fournel I, Dumas A, Mancini J, Alla F, Omorou A, Giraudeau B. [French version of The Ottawa Statement on the Ethical Design and Conduct of Cluster Randomized Trials, in a French law context]. Rev Epidemiol Sante Publique 2023; 71:101847. [PMID: 37167813 DOI: 10.1016/j.respe.2023.101847] [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: 04/07/2022] [Revised: 01/06/2023] [Accepted: 03/27/2023] [Indexed: 05/13/2023] Open
Abstract
INTRODUCTION There is growing evidence on the ethical challenges raised by cluster randomized trials. This specificity is not reflected in the legal texts regulating research, which creates difficulties for researchers implementing these experimental designs. The Ottawa Statement (Weijer et al. 2012) aims to provide detailed guidance on the ethical design, conduct and assessment of cluster trials. More broadly aims to help research stakeholders and decision-makers to make informed ethical decisions regarding the particularity of these experimental designs. It seems that this international statement, written in English, is not sufficiently accessible to all of the French professionals involved in health research. The aim of this article is to provide these professionals with a contextualized and illustrated French translation of the "Ottawa statement". METHOD . The "complex design" working group of the RECaP network (Research in Clinical Epidemiology and Public Health), carried out this work. A first version was discussed by the authors in several meetings. It was completed by contextual explanations and examples of French studies currently conducted by the authors. The final version was obtained by consensus and validated by the group. RESULTS . This work reports 15 recommendations grouped into 7 key questions: How to justify cluster design? How to submit an article to an ethics committee? How to identify research participants? How and when to obtain informed consent? Who are the gatekeepers? How to assess benefits and harm? How to protect vulnerable participants? Each of these recommendations is specific to cluster trials. The recommendations are explained and detailed through concrete examples. CONCLUSION Without interfering with current French laws, this work provides a framework for the organization, conduct and ethical assessment of cluster randomized trials in France. In the present-day context, it is essential that all concerned groups can base their decisions on recommendations in line with the elementary principles of health research ethics.
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Affiliation(s)
- A Bourmaud
- Unité d'épidémiologie clinique, CIC-EC 1426, Hôpital Universitaire Robert Debré, AP-HP, Paris et Université Paris-Cité, Paris, France.
| | - A Fianu
- Inserm CIC1410, CHU Réunion, Saint-Pierre, France/CERPOP, Université de Toulouse, Inserm, UPS, Toulouse, France
| | - C Kervan
- Equipe MeRISP, Inserm UMR U1219, Bordeaux Population Health Research Center (BPH), Université de Bordeaux, Bordeaux, France
| | - A Verga-Gérard
- CIC-EC 1433, Nancy, Inserm ; RECaP/ F-CRIN, Nancy, France
| | - I Fournel
- CHU Dijon Bourgogne, Inserm, Université de Bourgogne, CIC 1432, Module Épidémiologie Clinique, F21000 Dijon, France
| | - A Dumas
- Université Paris-Cité, ECEVE UMR 1123, Inserm, Paris, France
| | - J Mancini
- Aix Marseille Université, AP-HM, Inserm, IRD, ISSPAM, SESSTIM, BioSTIC, Marseille, France
| | - F Alla
- Université de Bordeaux, Inserm U1218, Bordeaux 33000, France; Prevention Department, Centre hospitalier universitaire de Bordeaux, France
| | - A Omorou
- CHRU-Nancy, Inserm, Université de Lorraine, CIC, Epidémiologie clinique, F-54000 Nancy, France
| | - B Giraudeau
- Université de Tours, Université de Nantes, Inserm, SPHERE U1246, Tours, France; INSERM CIC1415, CHRU de Tours, Tours, France
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Bourmaud A, Benoist Y, Tinquaut F, Allary C, Ramone-Louis J, Oriol M, Kalecinski J, Dutertre V, Lechopier N, Pommier M, Rousseau S, Dumas A, Amiel P, Regnier V, Buthion V, Chauvin F. Patient navigation for colorectal cancer screening in deprived areas: the COLONAV cluster randomized controlled trial. BMC Cancer 2023; 23:21. [PMID: 36609248 PMCID: PMC9817361 DOI: 10.1186/s12885-022-10169-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/13/2022] [Accepted: 09/29/2022] [Indexed: 01/09/2023] Open
Abstract
BACKGROUND The objective of this study was to assess the effectiveness of a Patient Navigation Intervention targeting deprived patients for Colo-Rectal Cancer (CRC) screening participation. METHODS A cluster randomized controlled trial was conducted in 5 districts. Peer Lay Patient Navigators were recruited to operate in deprived areas. Eligible participants had to be between 50 and 74 years old, live in these deprived areas and receive an invitation to the nationally organized Colo-Rectal Cancer (CRC) screening during the study period. The theory-driven navigation intervention was deployed for 18 months. A population Health Intervention Research assessment method was used to assess effectiveness and context interaction. The primary criterion was screening participation at 12 months. RESULTS Twenty-four thousand two hundred eighty-one individuals were included inside 40 clusters. The increase in participation in the intervention group was estimated at 23%, (ORa = 1.23, CI95% [1.07-1.41], p = 0.003). For the subgroup of individuals who participated, the time delay to participating was reduced by 26% (ORa = 0.74, CI95% [0.57-0.96], p = 0.021). Main factors modulating the effect of the intervention were: closeness of navigator profiles to the targeted population, navigators' abilities to adapt their modus operandi, and facilitating attachment structure. CONCLUSION The ColoNav Intervention succeeded in demonstrating its effectiveness, for CRC screening. Patient Navigation should be disseminate with broader health promotion goals in order to achieve equity in health care. TRIAL REGISTRATION clinicaltrials.gov NCT02369757 24/02/2015.
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Affiliation(s)
- A. Bourmaud
- grid.10988.380000 0001 2173 743XClinical Epidemiology Unit, Robert Debré Hospital, AP-HP, and INSERM CIC-EC 1426 and INSERM ECEVE 1123, University of Paris, 48 Bd Sérurier, 75 019 Paris, France ,grid.457361.2Public Health Department, Hygée Centre, Lucien Neuwirth Cancer Institute, Saint Priest en Jarez, France and Inserm, Clinical Investigation Center 1408, 42055 Saint-Etienne, France ,grid.7849.20000 0001 2150 7757Quality Safety Performance in Health (HESPER) EA7425, Lyon 1 University, Lyon, France
| | - Y. Benoist
- grid.14925.3b0000 0001 2284 9388Unité de Recherche en Sciences Humaines Et Sociales (URSHS) Institut Gustave Roussy, Paris, France
| | - F. Tinquaut
- grid.457361.2Public Health Department, Hygée Centre, Lucien Neuwirth Cancer Institute, Saint Priest en Jarez, France and Inserm, Clinical Investigation Center 1408, 42055 Saint-Etienne, France
| | - C. Allary
- grid.457361.2Public Health Department, Hygée Centre, Lucien Neuwirth Cancer Institute, Saint Priest en Jarez, France and Inserm, Clinical Investigation Center 1408, 42055 Saint-Etienne, France
| | - J. Ramone-Louis
- grid.72960.3a0000 0001 2188 0906COACTIS EA 4161 - Centre de Recherche en Gestion - Research Center in Management Science ISH and Faculty of Economics and Management, Lumière Lyon 2 University, Lyon, France
| | - M. Oriol
- grid.457361.2Public Health Department, Hygée Centre, Lucien Neuwirth Cancer Institute, Saint Priest en Jarez, France and Inserm, Clinical Investigation Center 1408, 42055 Saint-Etienne, France
| | - J. Kalecinski
- grid.457361.2Public Health Department, Hygée Centre, Lucien Neuwirth Cancer Institute, Saint Priest en Jarez, France and Inserm, Clinical Investigation Center 1408, 42055 Saint-Etienne, France ,grid.7849.20000 0001 2150 7757Quality Safety Performance in Health (HESPER) EA7425, Lyon 1 University, Lyon, France
| | - V. Dutertre
- grid.457361.2Public Health Department, Hygée Centre, Lucien Neuwirth Cancer Institute, Saint Priest en Jarez, France and Inserm, Clinical Investigation Center 1408, 42055 Saint-Etienne, France
| | - N. Lechopier
- Lyon1 University, Lyon, France ,grid.15140.310000 0001 2175 9188UMR S2HEP, French Education Institute, Ecole Normale Supérieure de Lyon, Lyon, France
| | - M. Pommier
- grid.15140.310000 0001 2175 9188UMR S2HEP, French Education Institute, Ecole Normale Supérieure de Lyon, Lyon, France
| | - S. Rousseau
- grid.457361.2Public Health Department, Hygée Centre, Lucien Neuwirth Cancer Institute, Saint Priest en Jarez, France and Inserm, Clinical Investigation Center 1408, 42055 Saint-Etienne, France ,grid.14925.3b0000 0001 2284 9388Unité de Recherche en Sciences Humaines Et Sociales (URSHS) Institut Gustave Roussy, Paris, France
| | - A. Dumas
- grid.10988.380000 0001 2173 743XClinical Epidemiology Unit, Robert Debré Hospital, AP-HP, and INSERM CIC-EC 1426 and INSERM ECEVE 1123, University of Paris, 48 Bd Sérurier, 75 019 Paris, France ,grid.14925.3b0000 0001 2284 9388Unité de Recherche en Sciences Humaines Et Sociales (URSHS) Institut Gustave Roussy, Paris, France
| | - P. Amiel
- grid.10988.380000 0001 2173 743XClinical Epidemiology Unit, Robert Debré Hospital, AP-HP, and INSERM CIC-EC 1426 and INSERM ECEVE 1123, University of Paris, 48 Bd Sérurier, 75 019 Paris, France ,grid.14925.3b0000 0001 2284 9388Unité de Recherche en Sciences Humaines Et Sociales (URSHS) Institut Gustave Roussy, Paris, France
| | - V. Regnier
- grid.457361.2Public Health Department, Hygée Centre, Lucien Neuwirth Cancer Institute, Saint Priest en Jarez, France and Inserm, Clinical Investigation Center 1408, 42055 Saint-Etienne, France ,grid.7849.20000 0001 2150 7757Quality Safety Performance in Health (HESPER) EA7425, Lyon 1 University, Lyon, France
| | - V. Buthion
- grid.72960.3a0000 0001 2188 0906COACTIS EA 4161 - Centre de Recherche en Gestion - Research Center in Management Science ISH and Faculty of Economics and Management, Lumière Lyon 2 University, Lyon, France
| | - F. Chauvin
- grid.457361.2Public Health Department, Hygée Centre, Lucien Neuwirth Cancer Institute, Saint Priest en Jarez, France and Inserm, Clinical Investigation Center 1408, 42055 Saint-Etienne, France ,grid.7849.20000 0001 2150 7757Quality Safety Performance in Health (HESPER) EA7425, Lyon 1 University, Lyon, France
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Ruiz-de-Azua G, Kousignian I, Vaz-Luis I, Caumette E, Di Meglio A, Havas J, Martin E, Martin AL, Dumas A, Menvielle G. Work outcomes of breast cancer survivors who returned to work after treatment: CANTO cohort. Eur J Public Health 2022. [PMCID: PMC9594071 DOI: 10.1093/eurpub/ckac131.211] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/02/2022] Open
Abstract
Background As survival rates among breast cancer patients improve there is an increasing need to address breast cancer survivors’ (BCS) issues, professional life being a key aspect. Return to work (RTW) of BCS has been largely studied, but studies on job maintenance and its determinants are scarce. We aim to study job maintenance after RTW and the associated factors among BCS. Methods We used data from the CANTO cohort, a French prospective cohort of BCS. We included 1643 BCS aged <57 at diagnosis (dx) who returned to work two years after dx. We excluded self-employed BCS. Using multinomial logistic models, we assessed the association between activity status one year after they return to work. (i.e. active, sick leave, or unemployed, retired or invalidity) and sociodemographic, clinical, health status and work-related factors. Results Overall, 87% of BCS were active, 10% were on sick leave and 3% were on unemployment, retirement or invalidity one year after they return to work. In the fully adjusted model being on sick leave was associated with stage III at dx (OR: 1.89, 95% CI: 1.11-3.22), being severely fatigued at the moment of returning to work (OR: 1.53, 1.04-2.27), and having workplace accommodations (OR: 1.79, 1.14-2.81). The unemployed, retired, invalidity status was negatively associated with professional life being more than or as important as one’s personal life (OR: 0.51, 0.26-0.98) and being <50 years old (OR: 0.51, 0.27-0.96), and positively associated with having a fixed-term contract (OR: 2.69, 1.39-5.18) and working for a small company (OR: 2.73, 1.24-6.02). Conclusions A non-negligible proportion of BCS are non-active one year after they return to work. While clinical factors are associated with sick leave, work related factors are associated with the unemployed, retired, and invalidity status. RTW should not be regarded as the ultimate goal and future policies should focus on ensuring people are ready to return to work and maintain their jobs. Key messages • A non-negligible proportion of breast cancer survivors are non-active one year after they return to work. • Future policies should ensure job maintenance along with return to work.
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Affiliation(s)
- G Ruiz-de-Azua
- Institute Pierre Louis Epidemiology and Public Health, Sorbonne University, INSERM , Paris, France
| | - I Kousignian
- BioSTM - UR 7537, Université Paris Cité , Paris, France
| | - I Vaz-Luis
- Medical Oncology Department, Gustave Roussy , Villejuif, France
- INSERM Unit 981, Gustave Roussy , Villejuif, France
| | - E Caumette
- Institute Pierre Louis Epidemiology and Public Health, Sorbonne University, INSERM , Paris, France
| | - A Di Meglio
- INSERM Unit 981, Gustave Roussy , Villejuif, France
| | - J Havas
- INSERM Unit 981, Gustave Roussy , Villejuif, France
| | - E Martin
- INSERM Unit 981, Gustave Roussy , Villejuif, France
| | | | - A Dumas
- ECEVE, UMR 1123, Université de Paris , Paris, France
| | - G Menvielle
- Institute Pierre Louis Epidemiology and Public Health, Sorbonne University, INSERM , Paris, France
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de Bouillé JG, Luong L, Crepey P, Dumas A, Zerah J, Delaugerre C, Noret M, Zeggagh J. Transmission du SARS-CoV-2 lors d'une soirée en club fermée entre personnes vaccinées (ITOC-ANRS 0066S) : résultats préliminaires. MÉDECINE ET MALADIES INFECTIEUSES FORMATION 2022. [PMCID: PMC9152499 DOI: 10.1016/j.mmifmc.2022.03.027] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Download PDF] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
Introduction La pandémie de SARS-CoV-2 a conduit à la fermeture des lieux de clubbing pour réduire la transmission du virus. Les vaccins protègent en partie de l'infection et réduise ainsi sa transmission. L'étude "Indoor Transmission of COVID-19" (ITOC) a pour objectif de déterminer, parmi une population entièrement vaccinée, le risque de transmission du SARS-CoV-2 et d'autres pathogènes respiratoires lors d'un événement de clubbing en salle fermée dans une population vaccinée. Nous présentons ici les premiers résultats sur la transmission du SARS-CoV-2. Matériels et méthodes ITOC est une étude mono-centrique en cluster, randomisée en 2 :1 et contrôlée. L'intervention était un événement clubbing indoor de 8 heures sans port de masque, sans distanciation sociale, à jauge pleine, en octobre 2021 à Paris. Les participants étaient âgés de 18 à 49 ans avec un schéma vaccinal complet (sans le boost). Ils devaient fournir un échantillon salivaire le jour de l'expérimentation et sept jours plus tard, pour la recherche par PCR du SARS-CoV-2 et de 24 autres pathogènes respiratoires (dont VRS et autres Coronavirus). Ils ont également rempli des questionnaires en ligne à l'inclusion, un jour après l'événement et de 3 à 7 jours après pour y renseigner leurs symptômes et comportements au cours de la soirée. Résultats Parmi les 1216 participants randomisés, 755 ont suivis tout le protocole, 484 dans le groupe intervention et 271 dans le groupe contrôle. Les deux groupes étaient comparables sur le plan des caractéristiques socio démographiques, 53% des participants étaient des hommes, l'âge médian était de 29 ans, 22,7% était étudiant, 43,7% sortaient une à 2 fois par mois en discothèque. A J0, un participant dans chaque groupe a été testé positif au SARS-CoV-2 (Ct= 28 et 30 pour le groupe intervention et contrôle respectivement ), et à J7, un seul participant dans le groupe contrôle a été testé positif. Les analyses concernant les questionnaires et les virus respiratoires sont en en cours d'analyse. Conclusion La participation à une soirée en discothèque en milieu clos à pleine jauge avec une ventilation efficace (sans masque et sans distanciation physique) entre personnes vaccinés n'a pas été associée à l'apparition d'un cluster de SARS-CoV-2 à partir d'une personne contagieuse participante à la soirée. Le taux d'incidence et le nombre insuffisant de participants ne permet pas de calculer à un risque relatif de transmission du SARS-CoV-2. Aucun lien d'intérêt
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Affiliation(s)
- J. Goupil de Bouillé
- Service de Maladies Infectieuses et Tropicales, Hôpital Avicenne, AP-HP, Bobigny, France
| | - L. Luong
- CIC Cochin Pasteur, AP-HP, Paris, France
| | - P. Crepey
- Univ Rennes, EHESP, CNRS, ARENES – UMR 6051, Rennes, France
| | - A. Dumas
- ANRS, Agence Nationale Recherche Sida, 101 rue de Tolbiac, Paris, France
| | - J. Zerah
- Laboratoire Cerballiance, Cerbahealthcare, Paris, France
| | - C. Delaugerre
- Service de Virologie, Hôpital Saint-Louis, AP-HP, Inserm U944, Université de Paris, Paris, France
| | - M. Noret
- Renarci, Centre hospitalier, Annecy, France
| | - J. Zeggagh
- Département de Maladies Infectieuses et Tropicales, Hôpital Saint-Louis-Lariboisère, AP-HP, Paris, France
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Bougas N, Allodji R, Fayech C, Pacquement H, Haddy N, de Vathaire F, Fresneau B, Dumas A. Suivi médical après un cancer pédiatrique : les survivants avec un risque accru de cardiomyopathie sont-ils régulièrement suivis ? Rev Epidemiol Sante Publique 2021. [DOI: 10.1016/j.respe.2021.04.054] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022] Open
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Turmaine K, Jeannic AL, Dumas A, Chevreul K. Lessons learned from an e-mental health intervention: The promotion of stopblues in 41 french cities. Eur Psychiatry 2021. [PMCID: PMC9470417 DOI: 10.1192/j.eurpsy.2021.318] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
Abstract
IntroductionFor more than a decade, digital health has held promise for enabling a much broader population to have access to health information, education and services. However, the increasing number of studies on the subject show mixed results and currently, there is a certain disillusionment regarding its benefits. And yet, the Covid-19 crisis has revealed the importance of developing digital-based complementary support to existing resources.ObjectivesFactors associated with higher utilization rates among the target audience need to be investigated.MethodsIn 2018, 41 French cities enrolled in an intervention program aimed at promoting StopBlues®, a digital health tool that helps prevent mental distress and suicide among the general population. After two years of experimentation, a Multiple Correspondence Analysis (MCA) was performed using quantitative and qualitative data collection methods from institutional sources, questionnaires and web analytics tools.ResultsFinding trends show that higher utilization rates were associated with the involvement of general practitioners (GPs) in the promotion of StopBlues and the use of digital marketing channels. Context-specific characteristics also played an important role in the adoption of the tool.ConclusionsThe local context has a strong influence on how digital tools are locally promoted and accepted. Further research is needed to understand how local actors and specifically GPs can be involved in suicide prevention. More broadly, the challenge today is to ensure acceptance of digital health technology among targeted populations by adapting the digital offer to their needs and promoting the available tools.DisclosureNo significant relationships.
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Dolan E, Dumas A, Keane KM, Bestetti G, Freitas LHM, Gualano B, Kohrt W, Kelley GA, Pereira RMR, Sale C, Swinton P. The influence of acute exercise on bone biomarkers: protocol for a systematic review with meta-analysis. Syst Rev 2020; 9:291. [PMID: 33308281 PMCID: PMC7733242 DOI: 10.1186/s13643-020-01551-y] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/21/2020] [Accepted: 11/30/2020] [Indexed: 02/01/2023] Open
Abstract
BACKGROUND Bone is a plastic tissue that is responsive to its physical environment. As a result, exercise interventions represent a potential means to influence the bone. However, little is currently known about how various exercise and participant characteristics interact to influence bone metabolism. Acute, controlled, interventions provide an in vivo model through which the acute bone response to exercise can be investigated, typically by monitoring circulating bone biomarkers. Currently, substantial heterogeneity in factors such as study design, quality, exercise, and participant characteristics render it difficult to synthesize and evaluate the available evidence. Using a systematic review and meta-analytic approach, the aim of this investigation is to quantify the effect of an acute exercise bout on circulating bone biomarkers as well as examine the potential factors that may moderate this response, e.g., variation in participant, exercise, and sampling characteristics. METHODS This protocol was designed in accordance with the PRISMA-P guidelines. Seven databases (MEDLINE, Embase, Sport Discus, Cochrane CENTRAL, PEDro, LILACS, and Ibec) will be systematically searched and supplemented by a secondary screening of the reference lists of all included articles. The PICOS (Population, Intervention, Comparator, Outcomes and Study Design) approach was used to guide the determination of the eligibility criteria. Participants of any age, sex, training, or health status will be considered for inclusion. We will select studies that have measured the bone biomarker response before and after an acute exercise session. All biomarkers considered to represent the bone metabolism will be considered for inclusion, and sensitivity analyses will be conducted using reference biomarkers for the measurement of bone resorption and formation (namely β-CTX-1 and P1NP). Multi-level, meta-regression models within a Bayesian framework will be used to explore the main effect of acute exercise on bone biomarkers as well as potential moderating factors. The risk of bias for each individual study will be evaluated using a modified version of the Downs and Black checklist while certainty in resultant outcomes will be assessed using the Grading of Recommendations Assessment, Development and Evaluation (GRADE) approach. DISCUSSION A better understanding of the bone metabolic response to an acute bout of exercise has the potential to advance our understanding of the mechanisms through which this stimulus impacts bone metabolism, including factors that may moderate this response. Additionally, we will identify current gaps in the evidence base and provide recommendations to inform future research. SYSTEMATIC REVIEW REGISTRATION This protocol was prospectively registered in the Open Science Framework Registry ( https://osf.io/6f8dz ).
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Affiliation(s)
- E Dolan
- Applied Physiology and Nutrition Research Group, School of Physical Education and Sport; Faculdade de Medicina FMUSP, University of Sao Paulo, Sao Paulo, Brazil.
| | - A Dumas
- Applied Physiology and Nutrition Research Group, School of Physical Education and Sport; Faculdade de Medicina FMUSP, University of Sao Paulo, Sao Paulo, Brazil
| | - K M Keane
- Department of Sport, Exercise and Rehabilitation, Northumbria University, Newcastle upon Tyne, UK
| | - G Bestetti
- Applied Physiology and Nutrition Research Group, School of Physical Education and Sport; Faculdade de Medicina FMUSP, University of Sao Paulo, Sao Paulo, Brazil
| | - L H M Freitas
- Applied Physiology and Nutrition Research Group, School of Physical Education and Sport; Faculdade de Medicina FMUSP, University of Sao Paulo, Sao Paulo, Brazil
| | - B Gualano
- Applied Physiology and Nutrition Research Group, School of Physical Education and Sport; Faculdade de Medicina FMUSP, University of Sao Paulo, Sao Paulo, Brazil.,Food Research Centre, University of São Paulo, Sao Paulo, SP, Brazil
| | - W Kohrt
- Centre for Women's Health Research, School of Medicine, University of Colorado, Aurora, USA
| | - G A Kelley
- Department of Biostatistics, West Virginia University, Morgantown, USA
| | - R M R Pereira
- Bone Metabolism Laboratory, Rheumatology Division, Faculdade de Medicina FMUSP, Universidade de Sao Paulo, Sao Paulo, SP, Brazil
| | - C Sale
- Musculoskeletal Physiology Research Group, Sport, Health and Performance Enhancement (SHAPE) Research Centre, School of Science and Technology, Nottingham Trent University, Nottingham, UK
| | - P Swinton
- School of Health Sciences, Robert Gordon University, Aberdeen, UK
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Djehal N, Havas J, Gbenou A, Martin E, Charles C, Dauchy S, Pistilli B, Cadeau C, Arveux P, Everhard S, Lemonnier J, Coutant C, Cottu P, Lesur A, Menvielle G, Dumas A, Andre F, Michiels S, Vaz-Luis I, Di Meglio A. Use of oral complementary-alternative medicine (OCAM) and fatigue among early breast cancer (BC) patients (pts). Eur J Cancer 2020. [DOI: 10.1016/s0959-8049(20)30780-2] [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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Ruiz-de-Azua Unzurrunzaga G, Luis I, Bovagnet T, Di Meglio A, Havas J, Caumette E, Martin E, Pistilli B, Coutant C, Cottu P, Rouanet P, Arnaud A, Arsene O, Ibrahim M, Wassermann J, Rouzier R, Martin AL, Everhard S, Dumas A, Menvielle G. 235P Breast cancer and perceived discrimination in the workplace: A longitudinal cohort study. Ann Oncol 2020. [DOI: 10.1016/j.annonc.2020.08.356] [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] Open
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11
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Turmaine K, Picot Ngo C, Le Jeannic A, Roelandt JL, Chevreul K, Dumas A. Integration of eMental health technologies into traditional community-based interventions. Eur J Public Health 2020. [DOI: 10.1093/eurpub/ckaa166.074] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
Abstract
Background
Very little research has been conducted to appraise the merits of including municipalities and their local health providers in the promotion of digital health programmes. While more and more municipalities have locally implemented a health strategic plan and have focused on building local network of professionals, how do the latter react to the implementation of innovative e-mental health community-based programmes?
Methods
In 2018, 42 French municipalities volunteered to promote StopBlues, a digital health tool aimed at preventing mental distress and suicide. In each municipality, a local delegate was responsible for the promotion of the tool. Using observations, questionnaires and interviews with the delegates, we analysed how the promotion of StopBlues® was conducted in each setting. 2/3 of these municipalities started the promotion directly, and in 2019, a second wave of municipalities launched the promotion with a stronger support from the research team backed by the French World Health Organization Collaborating Centre for Research and Training in Mental Health (WHOCC).
Results
The use of digital technology in the implementation of a mental health programme received a mixed reception from the local health professionals because of its innovative aspect. 2/3 of the delegates declared that they were struggling to create a stronger network of local partners including private medical practioners. 63% of the respondents stated that their municipalities got involved in the programme for networking purposes.
Conclusions
Digital technologies have initiated a paradigm shift in the way community-based health programmes are set up but need to strengthen their territorial anchorage in order to be accepted and used at the local level.
Key messages
Digital technology can be a strong lever against health inequities but its effectiveness has to be studied carefully. Digital technolgy has to be implemented in local settings with the collaboration of local actors in order to be accepted and used.
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Affiliation(s)
- K Turmaine
- ECEVE, Inserm/Université Paris Sorbonne, Paris, France
| | - C Picot Ngo
- ECEVE, Inserm/Université Paris Sorbonne, Paris, France
| | - A Le Jeannic
- ECEVE, Inserm/Université Paris Sorbonne, Paris, France
- URC-ECO, APHP, Paris, France
| | - J L Roelandt
- ECEVE, Inserm/Université Paris Sorbonne, Paris, France
- WHOCC, WHOCC, Lille, France
| | - K Chevreul
- ECEVE, Inserm/Université Paris Sorbonne, Paris, France
- URC-ECO, APHP, Paris, France
| | - A Dumas
- ECEVE, Inserm/Université Paris Sorbonne, Paris, France
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12
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Assogba E, Mamguem Kamga A, Costaz H, Jankowski C, Dumas A, Roignot P, Jolimoy G, Coutant C, Arveux P, Dabakuyo-Yonli T. What are young women living conditions after breast cancer? Health-related quality of life, sexual and fertility issues, professional reinsertion. Rev Epidemiol Sante Publique 2020. [DOI: 10.1016/j.respe.2019.11.007] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022] Open
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13
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Lê-Bury G, Deschamps C, Kizilyaprak C, Blanchard W, Daraspe J, Dumas A, Gordon MA, Hinton JCD, Humbel BM, Niedergang F. Increased intracellular survival of Salmonella Typhimurium ST313 in HIV-1-infected primary human macrophages is not associated with Salmonella hijacking the HIV compartment. Biol Cell 2020; 112:92-101. [PMID: 31922615 DOI: 10.1111/boc.201900055] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/23/2019] [Accepted: 11/28/2019] [Indexed: 12/28/2022]
Abstract
BACKGROUND Non-typhoidal Salmonella (NTS) causes a severe invasive syndrome (iNTS disease) described in HIV-positive adults. The impact of HIV-1 on Salmonella pathogenesis and the molecular basis for the differences between these bacteria and classical diarrhoeal S. Typhimurium remains unclear. RESULTS Here, we show that iNTS-associated S. Typhimurium Sequence Type 313 (ST313) bacteria show greater intracellular survival in primary human macrophages, compared with a 'classical' diarrhoeal S. Typhimurium ST19 isolate. The increased intracellular survival phenotype of ST313 is more pronounced in HIV-infected macrophages. We explored the possibility that the bacteria take advantage of the HIV-associated viral-containing compartments created in human macrophages that have low pH. Confocal fluorescence microscopy and focussed ion beam-scanning electron microscopy tomography showed that Salmonella did not co-localise extensively with HIV-positive compartments. CONCLUSION The capacity of ST313 bacteria to survive better than ST19 bacteria within primary human macrophages is enhanced in cells pre-infected with HIV-1. Our results indicate that the ST313 bacteria do not directly benefit from the niche created by the virus in HIV-1-infected macrophages, and that they might take advantage from a more globally modified host cell. SIGNIFICANCE A better understanding of the interplay between HIV-1 and Salmonella is important not only for these bacteria but also for other opportunistic pathogens.
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Affiliation(s)
- G Lê-Bury
- Institut Cochin, Université de Paris, INSERM, U1016, CNRS, UMR 8104, Paris, F-75014, France
| | - C Deschamps
- Institut Cochin, Université de Paris, INSERM, U1016, CNRS, UMR 8104, Paris, F-75014, France
| | - C Kizilyaprak
- Faculté de Biologie et de Médecine, Electron Microscopy Facility, Université de Lausanne, Lausanne, Switzerland
| | - W Blanchard
- Faculté de Biologie et de Médecine, Electron Microscopy Facility, Université de Lausanne, Lausanne, Switzerland
| | - J Daraspe
- Faculté de Biologie et de Médecine, Electron Microscopy Facility, Université de Lausanne, Lausanne, Switzerland
| | - A Dumas
- Institut Cochin, Université de Paris, INSERM, U1016, CNRS, UMR 8104, Paris, F-75014, France
| | - M A Gordon
- Institute of Infection and Global Health, University of Liverpool, Liverpool, UK.,Malawi-Liverpool-Welcome Trust B=Clinical Research Programme, Malawi
| | - J C D Hinton
- Institute of Integrative Biology, University of Liverpool, Liverpool, UK
| | - B M Humbel
- Faculté de Biologie et de Médecine, Electron Microscopy Facility, Université de Lausanne, Lausanne, Switzerland.,IMG, Okinawa Institute of Science and Technology, Onna-son, Okinawa, Japan
| | - F Niedergang
- Institut Cochin, Université de Paris, INSERM, U1016, CNRS, UMR 8104, Paris, F-75014, France
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14
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Caumette E, Dumas A, Pinto S, El Mouhebb M, Bovagnet T, Meglio AD, Lemonnier J, Everhard S, Vaz-Luis I, Menvielle G. Employment two years after breast cancer diagnosis: role of household characteristics, CANTO cohort. Eur J Public Health 2019. [DOI: 10.1093/eurpub/ckz185.056] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
Abstract
Background
Breast cancer is associated with a high 5-year survival rate and more than half women are still of working age at diagnosis. Many studies evaluated the clinical determinants of return to work (RTW) but few investigated RTW in relation to family factors. Our objective was to study the role of household characteristics in non-RTW two years after breast cancerdiagnosis.
Methods
We used data of a French prospective cohort of women diagnosed with stage I-III, primary breast cancer (CANTO, NCT01993498). Patients had to be under 57 and have a job at diagnosis. We performed logistic regressions to model non-RTW two years after diagnosis in relation to household characteristics at diagnosis (marital status, children, support from partner), adjusting for tumor characteristics, health status at baseline and one year after diagnosis, and household income at diagnosis. In a second step, we conducted analyses stratified for household income at diagnosis.
Results
In total, 1874 women were eligible. Being in a relationship did not impact non-RTW (OR = 1.43 [95% CI 0.95-2.16]). Among the 1566 women in a relationship, being married was associated with elevated odds of non-RTW(OR = 1.37 [0.96-1.94]). Having children(OR = 1.17 [0.81-1.69]) or receiving support from their partner (OR = 1.17 [0.77-1.78]) was not associated with non-RTW. However, the situation differed in low-income households(<2500€) among whom being married was associated with more elevated odds of non-RTW(OR = 1.94 [0.97-3.88]). No clear association was observed between having children (OR = 1.85 [0.85-4.03]) and non-RTW, but living with at least two children (OR = 2.76 [1.14-6.70]) and receiving support from their partner (OR = 2.28 [1.01-5.17]) was associated with increased odds of non-RTW.
Conclusions
The family environment is associated with non-RTW among the poorest women but not the others.
Key messages
Among the poorest women, the family environment is associated with non-RTW. Among all women, the family environment is not associated with non-RTW.
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Affiliation(s)
| | - A Dumas
- UNIT 1123, INSERM, Paris, France
| | - S Pinto
- IPLESP, INSERM, Paris, France
| | | | | | | | - J Lemonnier
- UNICANCER, French Breast Cancer Intergroup, Paris, France
| | - S Everhard
- UNICANCER, French Breast Cancer Intergroup, Paris, France
| | - I Vaz-Luis
- UNIT 981, INSERM, Villejuif, France
- Breast Cancer Unit, Department of Medical Oncology, Gustave Roussy, Villejuif, France
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15
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Beaufils C, Jacquin P, Dumas A, Limbourg A, Romier M, Larbre JP, Mellerio H, Belot A. Patients' association programs for adolescents and young adults: The JAP study. Arch Pediatr 2019; 26:205-213. [PMID: 30982562 DOI: 10.1016/j.arcped.2019.03.006] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [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: 07/11/2018] [Revised: 02/13/2019] [Accepted: 03/07/2019] [Indexed: 10/27/2022]
Abstract
INTRODUCTION A dozen innovative care clinics have recently opened in France to support the transition of adolescents with chronic conditions between pediatric and adult healthcare units through various interventions. Some patients' associations have set up specific programs for adolescents and young adults (AYAs) in order to facilitate the transition process, but they are not well-known among healthcare professionals. Our aim was to describe these programs and to evaluate the quality of their implementation and transferability into transition clinics. MATERIEL AND METHODS We conducted semistructured interviews with representatives of associations that proposed interventions dedicated to AYAs with chronic conditions. We collected quantitative and qualitative data to describe these interventions. Descriptive statistics were run on quantitative data and a thematic analysis of the qualitative data was made. RESULTS A questionnaire was sent to 55 associations, 19 (36%) of them had established programs and were contacted; interviews were conducted with 16 of them. Thirteen were national associations, 11 focused on a specific chronic disease, three supported multiple chronic conditions, and two were available to any AYA with chronic disease. Programs were mainly camps (n=5; from 2days to 3weeks) and workshops (n=5). Educational considerations and hobbies were more frequently discussed when peers were directly involved in the program. Stakeholders were mainly other patients and peers (9/16). Fourteen out of 16 were perceived as successful (perceived improvement in AYA quality of life and/or positive feedback). Twelve out of 16 associations thought that their program could be transferable to transition clinics and all were interested in collaboration. DISCUSSION This work highlights five key points to be considered in the clinical care setting before building programs: unique tailoring and customization, complementarity with existing programs in patients' associations, viability based on peer involvement and evaluation, a common main goal, and using transition clinics' assets to direct AYAs towards the most suitable program.
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Affiliation(s)
- C Beaufils
- Department of pediatric rheumatology, hôpital Femme-Mère-Enfant, hospices civils de Lyon, Claude-Bernard university Lyon 1, university of Lyon, 69677 Lyon, France; Plateforme Pass'Age, hôptial Femme-Mère-Enfant, hospices civils de Lyon, 69677 Lyon, France.
| | - P Jacquin
- Plateforme Ad'venir, adolescent medicine, hôpital Robert-Debré, Assistance publique-Hôpitaux de Paris, 75019 Paris, France; French Clinical Research Group in Adolescent Medicine and Health, 75010 Paris, France
| | - A Dumas
- ECEVE, UMRS 1123, Institut nationale de la recherché médicale (Inserm), université Paris-Diderot, 10, avenue de Verdun, 75010 Paris, France; Center for research in epidemiology and population health (CESP) U1018, Inserm, 94807 Villejuif, France
| | - A Limbourg
- Plateforme Ad'venir, adolescent medicine, hôpital Robert-Debré, Assistance publique-Hôpitaux de Paris, 75019 Paris, France
| | - M Romier
- Plateforme Pass'Age, hôptial Femme-Mère-Enfant, hospices civils de Lyon, 69677 Lyon, France
| | - J-P Larbre
- Plateforme Pass'Age, hôptial Femme-Mère-Enfant, hospices civils de Lyon, 69677 Lyon, France; Rheumatology department, Lyon Sud hospital, hospices civils de Lyon, 69677 Lyon, France
| | - H Mellerio
- Plateforme Ad'venir, adolescent medicine, hôpital Robert-Debré, Assistance publique-Hôpitaux de Paris, 75019 Paris, France; French Clinical Research Group in Adolescent Medicine and Health, 75010 Paris, France; ECEVE, UMRS 1123, Institut nationale de la recherché médicale (Inserm), université Paris-Diderot, 10, avenue de Verdun, 75010 Paris, France
| | - A Belot
- Department of pediatric rheumatology, hôpital Femme-Mère-Enfant, hospices civils de Lyon, Claude-Bernard university Lyon 1, university of Lyon, 69677 Lyon, France; Plateforme Pass'Age, hôptial Femme-Mère-Enfant, hospices civils de Lyon, 69677 Lyon, France
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16
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Favard A, Aguir K, Contaret T, Dumas A, Bendahan M. Detection and measuring of BTEX traces at the ppb level using metal oxide gas sensor. ACTA ACUST UNITED AC 2019. [DOI: 10.1016/j.matpr.2018.10.425] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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17
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Vaz Luis I, Di Meglio A, El-Mouhebb M, Dumas A, Charles C, Menvielle G, Mesleard C, Martin A, Cottu P, Lerebours F, Coutant C, Lesur A, Dauchy S, Arveux P, Delaloge S, Lin N, Ganz P, Partridge A, Michiels S, André F. Breast cancer (BC) related fatigue: A longitudinal investigation of its prevalence, domains and correlates. Ann Oncol 2018. [DOI: 10.1093/annonc/mdy300.006] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
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18
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Germain L, Larouche D, Nedelec B, Perreault I, Duranceau L, Bortoluzzi P, Beaudoin Cloutier C, Genest H, Caouette-Laberge L, Dumas A, Bussière A, Boghossian E, Kanevsky J, Leclerc Y, Lee J, Nguyen MT, Bernier V, Knoppers BM, Moulin VJ, Auger FA, Auger FA. Autologous bilayered self-assembled skin substitutes (SASSs) as permanent grafts: a case series of 14 severely burned patients indicating clinical effectiveness. Eur Cell Mater 2018; 36:128-141. [PMID: 30209799 DOI: 10.22203/ecm.v036a10] [Citation(s) in RCA: 53] [Impact Index Per Article: 8.8] [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: 01/31/2023] Open
Abstract
Split-thickness skin autografts (AGs) are the standard surgical treatment for severe burn injuries. However, the treatment of patients with substantial skin loss is limited by the availability of donor sites for skin harvesting. As an alternative to skin autografts, our research group developed autologous self-assembled skin substitutes (SASSs), allowing the replacement of both dermis and epidermis in a single surgical procedure. The aim of the study was to assess the clinical outcome of the SASSs as a permanent coverage for full-thickness burn wounds. Patients were recruited through the Health Canada's Special Access Program. SASSs were grafted on debrided full-thickness wounds according to similar protocols used for AGs. The graft-take and the persistence of the SASS epithelium over time were evaluated. 14 patients received surgical care with SASSs. The mean percentage of the SASS graft-take was 98 % (standard deviation = 5) at 5 to 7 d after surgery. SASS integrity persisted over time (average follow-up time: 3.2 years), without noticeable deficiency in epidermal regeneration. Assessment of scar quality (skin elasticity, erythema, thickness) was performed on a subset of patients. Non-homogeneous pigmentation was noticed in several patients. These results indicated that the SASS allowed the successful coverage of full-thickness burns given its high graft-take, aesthetic outcome equivalent to autografting and the promotion of long-term tissue regeneration. When skin donor sites are in short supply, SASSs could be a valuable alternative to treat patients with full-thickness burns covering more than 50 % of their total body surface area.
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Affiliation(s)
- L Germain
- CHU de Québec-Université Laval, LOEX, Aile-R, 1401 18ième Rue, Quebec, Quebec, G1J 1Z4,
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19
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Xhaard C, Dumas A, Souchard V, Ren Y, Borson-Chazot F, Sassolas G, Schvartz C, Colonna M, Lacour B, Wonoroff AS, Velten M, Clero E, Maillard S, Marrer E, Bailly L, Mariné Barjoan E, Schlumberger M, Orgiazzi J, Adjadj E, Rubino C, Bouville A, Drozdovitch V, de Vathaire F. Are dietary reports in a case-control study on thyroid cancer biased by risk perception of Chernobyl fallout? Rev Epidemiol Sante Publique 2017; 65:301-308. [PMID: 28579185 DOI: 10.1016/j.respe.2017.02.002] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [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: 05/13/2016] [Revised: 02/07/2017] [Accepted: 02/13/2017] [Indexed: 10/19/2022] Open
Abstract
BACKGROUND In retrospective case-control studies performed following nuclear tests or nuclear accidents, individual thyroid radiation dose reconstructions are based on fallout and meteorological data from the residential area, demographic characteristics, and lifestyle as well as dietary information. Collecting the latter is a controversial step, as dietary declarations may be affected by the subjects' beliefs about their risk behavior. This report analyses the potential for such bias in a case-control study performed in eastern France. METHODS The study included 765 cases of differentiated thyroid carcinoma matched with 831 controls. Risk perceptions and beliefs of cases and controls were compared using Chi2 tests and differences in dietary reports were analyzed using a two-way ANOVA. RESULTS In general, atmospheric pollution and living near a nuclear power plant were the two major risks that may influence thyroid cancer occurrence cited by cases and controls. When focusing in particular on the consequences of the Chernobyl accident, cases were more likely to think that the consequences were responsible for thyroid cancer occurrence than controls. Vegetable consumption during the two months after the Chernobyl accident was correlated with the status of subjects, but not to their beliefs. Conversely, consumption of fresh dairy products was not correlated with the status or beliefs of subjects. CONCLUSION We found no evidence of systematic bias in dietary reports according to the status or beliefs held by subjects about the link between thyroid cancer occurrence and Chernobyl fallout. As such, these dietary reports may be used in further studies involving individual dosimetric reconstructions.
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Affiliation(s)
- C Xhaard
- Centre d'épidémiologie et de santé des populations (Cesp), U1018, epidemiology radiation group, Institut national de la santé et de la recherche médicale (Inserm), 94800 Villejuif, France; Gustave-Roussy, 94800 Villejuif, France; Université Paris-Saclay, 94800 Villejuif, France
| | - A Dumas
- Centre d'épidémiologie et de santé des populations (Cesp), U1018, epidemiology radiation group, Institut national de la santé et de la recherche médicale (Inserm), 94800 Villejuif, France; Gustave-Roussy, 94800 Villejuif, France; Université Paris-Saclay, 94800 Villejuif, France
| | - V Souchard
- Centre d'épidémiologie et de santé des populations (Cesp), U1018, epidemiology radiation group, Institut national de la santé et de la recherche médicale (Inserm), 94800 Villejuif, France; Gustave-Roussy, 94800 Villejuif, France; Université Paris-Saclay, 94800 Villejuif, France
| | - Y Ren
- Centre d'épidémiologie et de santé des populations (Cesp), U1018, epidemiology radiation group, Institut national de la santé et de la recherche médicale (Inserm), 94800 Villejuif, France; Gustave-Roussy, 94800 Villejuif, France; Université Paris-Saclay, 94800 Villejuif, France
| | - F Borson-Chazot
- Fédération d'endocrinologie, hospices civils de Lyon, groupement hospitalier Lyon-Est, 69677 Bron, France; Rhône-Alpes thyroid cancer registry, cancer research center of Lyon (UMR Inserm 1052, CNRS 5286), RTH Laennec faculty of medicine, university of Lyon, 69008 Lyon, France
| | - G Sassolas
- Rhône-Alpes thyroid cancer registry, cancer research center of Lyon (UMR Inserm 1052, CNRS 5286), RTH Laennec faculty of medicine, university of Lyon, 69008 Lyon, France
| | - C Schvartz
- Thyroid cancer registry of Champagne-Ardennes, institut Jean-Godinot, 51100 Reims, France
| | - M Colonna
- Cancer registry of Isère, 38240 Meylan, France
| | - B Lacour
- French national registry of childhood solid tumours, CHU de Nancy, 54505 Vandœuvre, France; Inserm UMRS1018, CESP, 94800 Villejuif, France
| | - A S Wonoroff
- Cancer registry of doubs, EA 3181, university hospital Besançon, 25030 Besançon, France
| | - M Velten
- Cancer Registry of Bas-Rhin, EA 3430, faculty of medicine, university of Strasbourg, 67085 Strasbourg, France
| | - E Clero
- Centre d'épidémiologie et de santé des populations (Cesp), U1018, epidemiology radiation group, Institut national de la santé et de la recherche médicale (Inserm), 94800 Villejuif, France; Gustave-Roussy, 94800 Villejuif, France; Université Paris-Saclay, 94800 Villejuif, France
| | - S Maillard
- Centre d'épidémiologie et de santé des populations (Cesp), U1018, epidemiology radiation group, Institut national de la santé et de la recherche médicale (Inserm), 94800 Villejuif, France; Gustave-Roussy, 94800 Villejuif, France; Université Paris-Saclay, 94800 Villejuif, France
| | - E Marrer
- Cancer registry of Haut-Rhin, Mulhouse hospital, 68051 Mulhouse, France
| | - L Bailly
- Public health department, university hospital Nice, 06202 Nice, France
| | - E Mariné Barjoan
- Public health department, university hospital Nice, 06202 Nice, France
| | | | - J Orgiazzi
- Department of endocrinology, Hospices civils de Lyon, 69310 Lyon, France
| | - E Adjadj
- Centre d'épidémiologie et de santé des populations (Cesp), U1018, epidemiology radiation group, Institut national de la santé et de la recherche médicale (Inserm), 94800 Villejuif, France; Université Paris-Saclay, 94800 Villejuif, France
| | - C Rubino
- Centre d'épidémiologie et de santé des populations (Cesp), U1018, epidemiology radiation group, Institut national de la santé et de la recherche médicale (Inserm), 94800 Villejuif, France; Gustave-Roussy, 94800 Villejuif, France; Université Paris-Saclay, 94800 Villejuif, France
| | - A Bouville
- Radiation epidemiology branch, division of cancer epidemiology and genetics, national cancer institute, Bethesda, USA
| | - V Drozdovitch
- Radiation epidemiology branch, division of cancer epidemiology and genetics, national cancer institute, Bethesda, USA
| | - F de Vathaire
- Centre d'épidémiologie et de santé des populations (Cesp), U1018, epidemiology radiation group, Institut national de la santé et de la recherche médicale (Inserm), 94800 Villejuif, France; Gustave-Roussy, 94800 Villejuif, France; Université Paris-Saclay, 94800 Villejuif, France.
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20
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Mellerio H, Dumas A, Guilmin-Crépon S, Loirat C, Lévy-Marchal C, Audard V, de Vathaire F, Alberti C. [Well-being in adulthood of patients with chronic conditions in childhood: The GEDEPAC-2 questionnaire]. Rev Epidemiol Sante Publique 2017; 65:137-148. [PMID: 28245953 DOI: 10.1016/j.respe.2017.01.001] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [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: 12/03/2015] [Revised: 09/15/2016] [Accepted: 01/04/2017] [Indexed: 11/16/2022] Open
Abstract
BACKGROUND In France, chronic diseases affect 3 million children. In children with chronic conditions, long-term somatic outcome has been well described, but little is known about the psychosocial aspects of well-being. METHODS Our aim was to build a self-administered questionnaire of global well-being in adults who had a chronic disease since or during childhood using a multidimensional and nonspecific approach. The questionnaire was constructed by a multidisciplinary group (epidemiologists, clinicians, sociologist, statistician). Items were built in compliance with reference data from the French general population (national surveys, free access) to allow comparative analysis adjusted for age and sex (and eventually other confounding factors) by indirect standardization (qualitative variables) or Z-scores (quantitative variables). RESULTS The GEDEPAC-2 includes 108 items exploring 11 domains: education, employment, housing, material security, social links, civic engagement, leisure, environment, physical health/risky behavior, health-related quality of life and sex life. Factual questions and satisfaction scales jointly explore social well-being. Quality of life is analyzed in terms of physical quality of life, mental quality of life, fatigue and burden of treatment by 3 questionnaires validated in French (SF-12; MFI-20; Burden of Treatment Questionnaire). Experience of transition from pediatric to adult healthcare is described in 21 items. Paper and electronic versions were developed. CONCLUSION Built in a multidimensional approach to well-being and in line with the available reference data, GEDEPAC-2 will facilitate the implementation of future studies on impact in adulthood of chronic disease in childhood.
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Affiliation(s)
- H Mellerio
- ECEVE, UMRS 1123, université Paris Diderot, Sorbonne Paris Cité, 10, avenue de Verdun, 75010 Paris, France; Inserm, ECEVE U1123, CIC-EC, CIC 1426, 10, avenue de Verdun, 75010 Paris, France; Unité d'épidémiologie clinique, hôpital Robert-Debré, Assistance publique-Hôpitaux de Paris, 48, boulevard Sérurier, 75019 Paris, France.
| | - A Dumas
- U1018, équipe d'épidémiologie des radiations, centre de recherche en épidémiologie et santé des populations, 114, rue Édouard-Vaillant, 94805 Villejuif cedex, France
| | - S Guilmin-Crépon
- ECEVE, UMRS 1123, université Paris Diderot, Sorbonne Paris Cité, 10, avenue de Verdun, 75010 Paris, France; Inserm, ECEVE U1123, CIC-EC, CIC 1426, 10, avenue de Verdun, 75010 Paris, France; Unité d'épidémiologie clinique, hôpital Robert-Debré, Assistance publique-Hôpitaux de Paris, 48, boulevard Sérurier, 75019 Paris, France
| | - C Loirat
- Service de néphrologie pédiatrique, hôpital Robert-Debré, Assistance publique-Hôpitaux de Paris, 48, boulevard Sérurier, 75019 Paris, France
| | - C Lévy-Marchal
- Inserm, pôle recherche clinique, 101, rue de Tolbiac, 75013 Paris, France
| | - V Audard
- Service de néphrologie et transplantation, institut francilien de recherche en néphrologie et transplantation, hôpital Henri-Mondor, Assistance publique-Hôpitaux de Paris, 51, avenue du Maréchal-de-Lattre-de-Tassigny, 94010 Créteil, France; Université Paris-Est Créteil, 61, avenue du Général-de-Gaulle, 94010 Créteil cedex, France
| | - F de Vathaire
- U1018, équipe d'épidémiologie des radiations, centre de recherche en épidémiologie et santé des populations, 114, rue Édouard-Vaillant, 94805 Villejuif cedex, France; Institut Gustave-Roussy, 114, rue Édouard-Vaillant, 94805 Villejuif cedex, France; Université Paris Sud, 91405 Orsay cedex, France
| | - C Alberti
- ECEVE, UMRS 1123, université Paris Diderot, Sorbonne Paris Cité, 10, avenue de Verdun, 75010 Paris, France; Inserm, ECEVE U1123, CIC-EC, CIC 1426, 10, avenue de Verdun, 75010 Paris, France; Unité d'épidémiologie clinique, hôpital Robert-Debré, Assistance publique-Hôpitaux de Paris, 48, boulevard Sérurier, 75019 Paris, France
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Dumas A, Rothman J, Gibert F, Lasfargues G, Zanatta JP, Edouart D. Performances of a HGCDTE APD Based Detector with Electric Cooling for 2-μmDIAL/IPDA Applications. EPJ Web of Conferences 2016. [DOI: 10.1051/epjconf/201611925008] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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Dumas A, Berger C, Auquier P, Michel G, Vassal G, Valteau-Couanet D, Fresneau B, Thouvenin-Doulet S, Casagranda L, Pacquement H, El-Fayech C, Oberlin O, Guibout C, De Vathaire F. Trajectoires scolaires après un cancer pédiatrique : une contribution à l’hypothèse de la sélection par la santé. Rev Epidemiol Sante Publique 2016. [DOI: 10.1016/j.respe.2015.07.037] [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] Open
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Gibert F, Edouart D, Cénac C, Le Mounier F, Dumas A. 2-μm Ho emitter-based coherent DIAL for CO(2) profiling in the atmosphere. Opt Lett 2015; 40:3093-3096. [PMID: 26125375 DOI: 10.1364/ol.40.003093] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
We report on the use of a thulium-fiber-pumped holmium-based emitter in a coherent differential absorption lidar (CDIAL) experiment for high time and space resolution of CO(2) absorption field in the atmosphere. The 2-μm high-power dual-wavelength single-mode Q-switched Ho:YLF oscillator delivers 10-mJ pulses with a duration of 40 ns at 2 kHz. Both short pulse duration and high repetition rate were chosen to increase the DIAL precision and time and space resolution in coherent detection. The CDIAL provides 150-m range and 15-min time-resolved CO(2) absorption coefficient with a calculated instrumental error of 0.5% at 500 m and less than 2% at 1 km. Dry-air CO(2) mixing ratio estimates from the DIAL system are compared with simultaneous in situ gas analyzer measurements during a 20-h-long experiment.
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Mellerio H, de Vathaire F, Dumas A, Andriss B, Alberti C. Nouvel outil pour l’évaluation du bien-être social à long terme des enfants malades chroniques : le questionnaire GEDEPAC 2. Rev Epidemiol Sante Publique 2015. [DOI: 10.1016/j.respe.2015.03.030] [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] Open
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Mellerio H, De Vathaire F, Dumas A, Andriss B, Alberti C. P-044 – Bien-être à long terme des enfants malades: un nouveau questionnaire. Arch Pediatr 2015. [DOI: 10.1016/s0929-693x(15)30229-3] [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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Abstract
With the increase in survival from childhood cancer, research has increasingly focused on the educational and professional achievements of childhood cancer survivors. Yet, if large-scale studies provide an acute description of the current situation of childhood cancer survivors, little is known about their trajectories and the social processes shaping these trajectories. Using a qualitative methodology, drawing from a life course perspective, this study sought to describe the role of childhood cancer and its side effects in educational trajectories, as perceived by the participants. We investigated related processes of social adjustment to cancer, that is to say, choices or decisions that survivors related to the illness in the making of their career plans. Eighty long-term French childhood cancer survivors participating in the Euro2K longitudinal study were interviewed through in-depth, face-to-face interviews undertaken in 2011-2012. There were various types of impact described by respondents of the diagnosis of cancer on their trajectories. These varied according to gender. In women, childhood cancer tended to result in poor educational achievement, or in steering the individual towards a health care or child care occupation. This was justified by a desire to return the support that had been offered to them as patients. In men, however, childhood cancer led to a shift in career plans, because of physical sequelae, or because of concerns about their future health. Paradoxically, this limitation had a positive impact in their occupational achievement, as most of these men disregarded blue-collar jobs and chose more qualified white-collar occupations. Overall, findings suggest that childhood cancer influenced educational trajectories and, thus, socioeconomic status in adulthood, through mechanisms embedded in gender norms. These mechanisms could explain gender inequalities in educational achievement after childhood cancer reported in large-scale cohort studies.
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Affiliation(s)
- A Dumas
- Gustave Roussy, Department of Clinical Research, Social and Human Sciences Research Unit, Villejuif, F-94805, France.
| | - I Cailbault
- Gustave Roussy, Department of Clinical Research, Social and Human Sciences Research Unit, Villejuif, F-94805, France.
| | - C Perrey
- Gustave Roussy, Department of Clinical Research, Social and Human Sciences Research Unit, Villejuif, F-94805, France.
| | - O Oberlin
- Gustave Roussy, Department of Pediatric and Adolescent Oncology, Villejuif, F-94805, France.
| | - F De Vathaire
- CESP Centre for Research in Epidemiology and Population Health, U1018, Radiation Epidemiology Team, Villejuif, F-94807, France; Gustave Roussy, Villejuif, F-94805, France; Université Paris XI, Villejuif, 94800, France.
| | - P Amiel
- Gustave Roussy, Department of Clinical Research, Social and Human Sciences Research Unit, Villejuif, F-94805, France.
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Yousfi M, Livi S, Dumas A, Crépin-Leblond J, Greenhill-Hooper M, Duchet-Rumeau J. Ionic compatibilization of polypropylene/polyamide 6 blends using an ionic liquids/nanotalc filler combination: morphology, thermal and mechanical properties. RSC Adv 2015. [DOI: 10.1039/c5ra00816f] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
In this study, room temperature ionic liquids (RTILs) based on phosphonium cations have been used as effective compatibilizers of polyolefin/polyamide 6/synthetic talc blends using a melt extrusion process.
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Affiliation(s)
- M. Yousfi
- Université de Lyon
- Lyon
- France
- INSA Lyon
- Villeurbanne
| | - S. Livi
- Université de Lyon
- Lyon
- France
- INSA Lyon
- Villeurbanne
| | - A. Dumas
- CNRS
- UMR 5563
- GET Géosciences Environnement Toulouse
- ERT Géomatériaux
- F-31400 Toulouse
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Boulouis G, Dumas A, Betensky RA, Brouwers HB, Fotiadis P, Vashkevich A, Ayres A, Schwab K, Romero JM, Smith EE, Viswanathan A, Goldstein JN, Rosand J, Gurol ME, Greenberg SM. Anatomic pattern of intracerebral hemorrhage expansion: relation to CT angiography spot sign and hematoma center. Stroke 2014; 45:1154-6. [PMID: 24603066 PMCID: PMC3984947 DOI: 10.1161/strokeaha.114.004844] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
BACKGROUND AND PURPOSE We sought to identify baseline determinants of the anatomic pattern of hematoma expansion in patients with intracerebral hemorrhage and spot sign. METHODS We coregistered baseline and follow-up CT scans from 15 intracerebral hemorrhage patients and measured growth at each surface node from baseline to follow-up hematoma. We analyzed the effects of proximity to the spot sign or hematoma center on distance of expansion, controlling for covariates. RESULTS There was substantial node-to-node variation in the extent of expansion around each hematoma surface (mean coefficient of variation for expansion distance, 0.43; 95% confidence interval, 0.39-0.48), indicating nonuniform expansion. Closer proximity to the hematoma center was independently associated with increased expansion (0.185 mm greater expansion for each 1 mm closer to the center; P<0.0001). Closer proximity to the spot sign was not independently associated with increased expansion in models including both terms. CONCLUSIONS Hemorrhages expand nonuniformly around their surface with a tendency for greater expansion closer to their center. These findings provide a novel framework for analyzing mechanisms underlying hemorrhage growth and response to treatment.
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Affiliation(s)
- Grégoire Boulouis
- From the Hemorrhagic Stroke Research Program, Department of Neurology (G.B., A.D., H.B.B., P.F., A. Vashkevich, A.A., K.S., A. Viswanathan, M.E.G., S.M.G.), Division of Neuroradiology, Department of Radiology (J.M.R.), Department of Emergency Medicine (J.N.G.), and Division of Neurocritical Care and Emergency Neurology (J.R.), Massachusetts General Hospital, Harvard Medical School, Boston, MA; Department of Biostatistics, Harvard School of Public Health, Boston, MA (R.A.B.); and Department of Clinical Neurosciences and Hotchkiss Brain Institute, University of Calgary, Alberta, Canada (E.E.S.)
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Yousfi M, Livi S, Dumas A, Le Roux C, Crépin-Leblond J, Greenhill-Hooper M, Duchet-Rumeau J. Use of new synthetic talc as reinforcing nanofillers for polypropylene and polyamide 6 systems: Thermal and mechanical properties. J Colloid Interface Sci 2013; 403:29-42. [DOI: 10.1016/j.jcis.2013.04.019] [Citation(s) in RCA: 49] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2013] [Revised: 04/08/2013] [Accepted: 04/12/2013] [Indexed: 10/26/2022]
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Gurol ME, Viswanathan A, Gidicsin C, Hedden T, Martinez-Ramirez S, Dumas A, Vashkevich A, Ayres AM, Auriel E, van Etten E, Becker A, Carmasin J, Schwab K, Rosand J, Johnson KA, Greenberg SM. Cerebral amyloid angiopathy burden associated with leukoaraiosis: a positron emission tomography/magnetic resonance imaging study. Ann Neurol 2013; 73:529-36. [PMID: 23424091 DOI: 10.1002/ana.23830] [Citation(s) in RCA: 109] [Impact Index Per Article: 9.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/29/2012] [Revised: 11/13/2012] [Accepted: 12/07/2012] [Indexed: 12/18/2022]
Abstract
OBJECTIVE We hypothesized that vascular amyloid contributes to chronic brain ischemia, therefore amyloid burden measured by Pittsburgh compound B retention on positron emission tomography (PiB PET) would correlate with the extent of magnetic resonance imaging (MRI) white matter hyperintensities (WMH; or leukoaraiosis) in patients with high vascular amyloid deposition (cerebral amyloid angiopathy [CAA]) but not in patients with high parenchymal amyloid deposition (Alzheimer disease [AD]; mild cognitive impairment [MCI]) or in healthy elderly (HE) subjects. METHODS Forty-two nondemented CAA patients, 50 HE subjects, and 43 AD/MCI patients had brain MRI and PiB PET. Multivariate linear regression was used to assess the independent association between PiB retention and white matter disease volume, controlling for age, gender, apolipoprotein E genotype, and vascular risk factors within each group. RESULTS CAA patients were younger than HE and AD subjects (68 ± 10 vs 73.3 ± 7 and 74 ± 7.4, p < 0.01) but had higher amounts of WMH (median = 21 vs 3.2 and 10.8 ml, respectively, p < 0.05 for both comparisons). Global PiB retention and WMH showed strong correlation (rho = 0.52, p < 0.001) in the CAA group but not in HE or AD. These associations did not change in the multivariate models. Lobar microbleed count, another marker of CAA severity, also remained as an independent predictor of WMH volume. INTERPRETATION Our results indicate that amyloid burden in CAA subjects (with primarily vascular amyloid) but not AD subjects (with primarily parenchymal amyloid) independently correlates with WMH volume. These findings support the idea that vascular amyloid burden directly contributes to chronic cerebral ischemia and highlights the possible utility of amyloid imaging as a marker of CAA severity.
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Affiliation(s)
- M Edip Gurol
- Hemorrhagic Stroke Research Center, Department of Neurology, Massachusetts General Hospital, Harvard Medical School, Boston, MA; Department of Biostatistics, Harvard School of Public Health, Boston, MA
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Auriel E, Martinez-Ramirez S, Gurol ME, Schwab K, Edlow B, Boulouis G, Dumas A, Greenberg SM, Viswanathan A. Abstract WMP116: Incidental Diffusion-weighted Imaging Lesions In Patients With Cognitive Decline. Stroke 2013. [DOI: 10.1161/str.44.suppl_1.awmp116] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Objectives:
Incidental diffusion-weighted imaging (DWI) hyperintense lesions on MRI, indicative of incident silent infarcts, are not uncommon in patients with advanced cerebral small vessel disease (SVD). SVD has been increasingly recognized as playing an important role in cognitive decline in the elderly. We thus examined the prevalence and associated risk factors for DWI hyperintense lesions in a cohort of patients followed in a memory clinic.
Methods:
We retrospectively analyzed MRI scans from 251 patients (43% females, mean age 73.3±8.3) with cognitive impairment enrolled in an ongoing prospective longitudinal study at the Massachusetts Alzheimer’s Disease Research Center (MADRC) between 2001 and 2010. Clinical and demographic data including the presence of specific vascular risk factors and degree of cognitive impairment (as measured by the Clinical Dementia Rating (CDR) Scale) were recorded. DWI and apparent diffusion coefficient (ADC) images were inspected for the presence of DWI-hyperintense lesions. Associated MRI markers of SVD including white matter hyperintensities (WMH), whole-brain mean global ADC, cerebral microbleeds (CMB) and lacunar infarcts were quantified.
Results:
We identified 16 DWI-hyperintense lesions in 13 (5.2%) patients. The 14 individuals with at least one DWI lesion did not differ from the 237 without lesions by age, gender, vascular risk factors, CDR, moderate to severe WMH, mean global ADC or number of CMB (p>0.05). Assuming a 10-day post-stroke period when DWI lesions remain hyperintense, their estimated annual prevalence would be 2.3 new infarcts per person-year.
Conclusions:
Incident DWI-hyperintense lesions, consistent with subacute cerebral infarcts, are not uncommon in unselected patients with cognitive decline. These lesions do not appear to be associated with other markers of SVD nor with degree of impairment. Our results suggest that the cumulative lifetime burden of these lesions may be substantial. These findings may support a role for small infarcts in age-related cognitive impairment.
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Affiliation(s)
- Eitan Auriel
- J. Philip Kistler Stroke Rsch Cntr, Massachusetts General Hosp, Boston, MA
| | | | - Mahmut Edip Gurol
- J. Philip Kistler Stroke Rsch Cntr, Massachusetts General Hosp, Boston, MA
| | - Kristin Schwab
- J. Philip Kistler Stroke Rsch Cntr, Massachusetts General Hosp, Boston, MA
| | - Brian Edlow
- J. Philip Kistler Stroke Rsch Cntr, Massachusetts General Hosp, Boston, MA
| | - Gregoire Boulouis
- J. Philip Kistler Stroke Rsch Cntr, Massachusetts General Hosp, Boston, MA
| | - Andrew Dumas
- J. Philip Kistler Stroke Rsch Cntr, Massachusetts General Hosp, Boston, MA
| | - Steven M Greenberg
- J. Philip Kistler Stroke Rsch Cntr, Massachusetts General Hosp, Boston, MA
| | - Anand Viswanathan
- J. Philip Kistler Stroke Rsch Cntr, Massachusetts General Hosp, Boston, MA
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Dumas A, Dierksen GA, Gurol ME, Halpin A, Martinez-Ramirez S, Schwab K, Rosand J, Viswanathan A, Salat DH, Polimeni JR, Greenberg SM. Functional magnetic resonance imaging detection of vascular reactivity in cerebral amyloid angiopathy. Ann Neurol 2012; 72:76-81. [PMID: 22829269 DOI: 10.1002/ana.23566] [Citation(s) in RCA: 137] [Impact Index Per Article: 11.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
OBJECTIVE In addition to its role in hemorrhagic stroke, advanced cerebral amyloid angiopathy (CAA) is also associated with ischemic lesions and vascular cognitive impairment. We used functional magnetic resonance imaging (MRI) techniques to identify CAA-associated vascular dysfunction. METHODS Functional MRI was performed on 25 nondemented subjects with probable CAA (mean ± standard deviation age, 70.2 ± 7.8 years) and 12 healthy elderly controls (age, 75.3 ± 6.2 years). Parameters measured were reactivity to visual stimulation (quantified as blood oxygen level-dependent [BOLD] response amplitude, time to peak response, and time to return to baseline after stimulus cessation) and resting absolute cerebral blood flow in the visually activated region (measured by arterial spin labeling). RESULTS CAA subjects demonstrated reduced response amplitude (percentage change in BOLD signal, 0.65 ± 0.28 vs 0.89 ± 0.14; p < 0.01), prolonged time to peak (11.1 ± 5.1 vs 6.4 ± 1.8 seconds; p < 0.001), and prolonged time to baseline (16.5 ± 6.7 vs 11.6 ± 3.1 seconds; p < 0.001) relative to controls. These differences were independent of age, sex, and hypertension in multivariable analysis and were also present in secondary analyses excluding nonresponsive voxels or voxels containing chronic blood products. Within the CAA group, longer time to peak correlated with overall volume of white matter T2 hyperintensity (Pearson correlation, 0.53; p = 0.007). Absolute resting blood flow in visual cortex, in contrast, was essentially identical between the groups (44.0 ± 12.6 vs 45.0 ± 10.0 ml/100 g/min, p = 0.8). INTERPRETATION Functional MRI identifies robust differences in both amplitude and timing of the response to visual stimulation in advanced CAA. These findings point to potentially powerful approaches for identifying the mechanistic links between vascular amyloid deposits, vascular dysfunction, and CAA-related brain injury.
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Affiliation(s)
- Andrew Dumas
- Hemorrhagic Stroke Research Center, Department of Neurology, Massachusetts General Hospital, Harvard Medical School, Boston, USA
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Dumas A, Chiavassa-Gandois H, Sans N, Delaunay F, Lemaire O, Laroche M, Railhac JJ. [Pelvic and spinal MR follow-up of multiple myeloma patients after high-dose chemotherapy and autologous peripheral blood stem cell transplant]. ACTA ACUST UNITED AC 2009; 90:1703-14. [PMID: 19953058 DOI: 10.1016/s0221-0363(09)73269-x] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
PURPOSE To evaluate the changes of bone marrow lesions on pelvic and spinal MR in patients with multiple myeloma after high-dose chemotherapy and autologous peripheral blood stem cell transplant. PATIENTS AND METHODS Pelvic and spinal MR examinations were obtained at presentation (myeloma diagnosis) and 1 year after transplant in 20 patients that were part of a group of 39 patients enrolled in a prospective study. The type of marrow replacement (classified in stages with stage 0: normal; stage 1: salt and pepper; stage 2: focal infiltration; stage 3: diffuse infiltration), the number and size of marrow lesions and the number of vertebral compression fractures were recorded. We have compared the findings prior to and following transplant, with correlation to the response to treatment and the use of biphosphonates. RESULTS The type of marrow replacement was improved following transplant in 65% of patients (not statistically significant). The number and size of nodules > 20 mm showed significant reduction (p = 0.0224 and p = 0.0237 respectively). Lesions on MR improved in 50% of patients with good response and 75% of patients with poor response to treatment. Patients receiving biphosphonates showed more vertebral compression fractures. CONCLUSION The evolution of marrow replacing lesions on MR is discordant compared to the biological and clinical response to treatment. Pelvic and spinal MR evaluation at the time of diagnosis does not appear to be a good predictive factor of response to treatment. Biphosphonates do not appear to prevent new vertebral compression fractures. Pelvic and spinal MR provides interesting data in the follow-up of patients with myeloma following autologous transplant, especially in the local evolution of marrow replacing lesions, but our results do not justify its use in routine clinical practice.
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Affiliation(s)
- A Dumas
- Service d'Imagerie Médicale, Hôpital Purpan, place du Dr Baylac, Toulouse Cedex 9, France
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Dumas A, Brigitte M, Moreau MF, Chrétien F, Baslé MF, Chappard D. Bone mass and microarchitecture of irradiated and bone marrow-transplanted mice: influences of the donor strain. Osteoporos Int 2009; 20:435-43. [PMID: 18548305 DOI: 10.1007/s00198-008-0658-3] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/20/2007] [Accepted: 04/24/2008] [Indexed: 10/22/2022]
Abstract
UNLABELLED Total body irradiation and bone marrow transplantation induced dramatic trabecular bone loss and cortical thickening in mice. Transplanted cells were engrafted in bone marrow, along trabeculae, and in periosteal and endosteal envelopes. None of the osteocytes were of donor origin. Bone microarchitecture of transplanted mice changed to tend toward the donor phenotype. INTRODUCTION Osteopenia and osteoporosis are complications of bone marrow transplants (BMT) attributed to related chemotherapy. However, the specific influence of total body irradiation (TBI) is unknown. METHODS We investigated the effects of TBI and BMT on bone mass and microarchitecture by micro-CT. Eighteen C57Bl/6 (B6) mice receiving lethal TBI had a BMT with marrow cells from green fluorescent protein--transgenic-C57Bl/6 (GFP) mice. Transplanted (T(GFP)B6), B6, and GFP mice were euthanized 1, 3, and 6 months after BMT or at a related age. RESULTS T(GFP)B6 presented a dramatic bone loss compared with B6 and did not restore their trabecular bone mass over time, despite a cortical thickening 6 months after BMT. Serum testosterone levels were not significantly reduced after BMT. During aging, GFP mice have less trabeculae, thicker cortices, but a narrower femoral shaft than B6 mice. From 3 months after BMT, cortical characteristics of T(GFP)B6 mice differed statistically from B6 mice and were identical to those of GFP mice. GFP(+) cells were located along trabecular surfaces and in periosteal and endosteal envelopes, but none of the osteocytes expressed GFP. CONCLUSION Our findings suggest that engrafted cells did not restore the irradiation-induced trabecular bone loss, but reconstituted a marrow microenvironment and bone remodeling similar to those of the donor. The effects of irradiation and graft on bone remodeling differed between cortical and trabecular bone.
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Affiliation(s)
- A Dumas
- INSERM, U922, "Remodelage osseux et biomatériaux", LHEA-Faculté de Médecine, 49045 Angers Cedex, France
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Dumas A, Lejeune C, Simmat-Durand L, Crenn-Hébert C, Mandelbrot L. Grossesse et substances psychoactives : étude de prévalence de la consommation déclarée. ACTA ACUST UNITED AC 2008; 37:770-8. [DOI: 10.1016/j.jgyn.2008.05.014] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/07/2007] [Revised: 05/26/2008] [Accepted: 05/28/2008] [Indexed: 10/21/2022]
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Dumas A, Le Drévo MA, Moreau MF, Guillet C, Baslé MF, Chappard D. Isolation of osteoprogenitors from murine bone marrow by selection of CD11b negative cells. Cytotechnology 2008; 58:163-71. [PMID: 19221888 PMCID: PMC2652555 DOI: 10.1007/s10616-009-9184-1] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.4] [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: 10/28/2008] [Accepted: 02/03/2009] [Indexed: 01/08/2023] Open
Abstract
Selection of cells having the most osteogenic potential is a strategy used in bone tissue engineering. Preclinical studies using murine bone marrow cells must consider the large amount of hematopoietic cells in the adherent fraction. The aim of this study was to enrich a murine bone marrow cell population with osteoprogenitors by using a simple and reliable method. Bone marrow from C57Bl/6 mice was extracted and cells which adhered onto plastic were expanded in primary culture for 14 days. Immunolabeling of the CD11b surface antigen was performed and the CD11b(-) cell fraction was isolated by FACS. Sorted and unsorted populations were analyzed for gene expression of osteoblast differentiation, alkaline phosphatase (AlkP) activity and matrix mineralization capacities. Selection of CD11b(-) cells increased the number of AlkP(+) cells from the plastic adherent fraction from 6.3% +/- 0.8 to 56% +/- 3.3 with a sevenfold increase in AlkP activity. mRNA analysis revealed a significant increase in the CD11b(-) fraction for Osterix (41-fold), RANKL (17-fold), M-CSF (8-fold) and Runx-2 (8-fold). An osteogenic population was obtained with improved capacities to produce a mineralized extracellular matrix in vitro, independently of the presence of glucocorticoids in the culture medium.
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Affiliation(s)
- A. Dumas
- INSERM, U922 “Remodelage osseux et biomatériaux”, LHEA—Faculté de Médecine, 49045 Angers Cedex, France
| | - M. A. Le Drévo
- INSERM, U922 “Remodelage osseux et biomatériaux”, LHEA—Faculté de Médecine, 49045 Angers Cedex, France
| | - M. F. Moreau
- INSERM, U922 “Remodelage osseux et biomatériaux”, LHEA—Faculté de Médecine, 49045 Angers Cedex, France
| | - C. Guillet
- Service Commun de cytométrie et d’analyse nucléotidique (SCCAN), IFR 132, CHU d’Angers, 49933 Angers Cedex 9, France
| | - M. F. Baslé
- INSERM, U922 “Remodelage osseux et biomatériaux”, LHEA—Faculté de Médecine, 49045 Angers Cedex, France
| | - D. Chappard
- INSERM, U922 “Remodelage osseux et biomatériaux”, LHEA—Faculté de Médecine, 49045 Angers Cedex, France
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Krassas GE, Pontikides N, Kaltsas T, Dumas A, Frystyk J, Chen JW, Flyvbjerg A. Free and total insulin-like growth factor (IGF)-I, -II, and IGF binding protein-1, -2, and -3 serum levels in patients with active thyroid eye disease. J Clin Endocrinol Metab 2003; 88:132-5. [PMID: 12519841 DOI: 10.1210/jc.2002-021349] [Citation(s) in RCA: 68] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
To determine whether serum levels of total (T) and free (F) IGF-I and -II and IGF binding protein (IGFBP),-1, -2, and -3 are normal in euthyroid patients with Graves' disease and active thyroid ophthalmopathy, we investigated the above-mentioned parameters in 21 patients (11 male, 10 female) aged 50.8 +/- 11.8 yr (range 35-70) and 19 healthy individuals matched for age, gender, and body mass index. All patients had active thyroid eye disease (TED) with clinical activity scores > or = 4 and positive orbital octreoscan in both eyes. Serum T and F IGF-I and IGF-II were determined using noncompetitive time-resolved monoclonal immunofluorometric assays, IGFBP-1 was determined by an in-house RIA, IGFBP-2 by a novel in-house time-resolved immunofluorometric assay, whereas IGFBP-3 by an immunoradiometric assay. All data are expressed as mean +/- SD. Our results show that T and F IGF-I, -II, and IGFBP-1, -2, and -3 levels in patients were similar to controls and did not show any significant difference. Specifically, mean T IGF-I for patients group was 131 (61), F IGF-I was 0.47 (0.16), T IGF-II was 1056 (300), F IGF-II was 1.45 (0.54), IGFBP-1 was 33 (14), IGFBP-2 was 848 (377), and finally IGFBP-3 was 3953 (1422). For controls, mean T IGF-I was 146 (51), F IGF-I was 0.85 (0.43), T IGF-II was 939 (197), F IGF-II was 1.53 (0.53), IGFBP-1 was 44 (24), IGFBP-2 was 764 (316) and finally IGFBP-3 was 3721 (1017). Furthermore, no statistically differences emerged in the ratio between molar weights of T IGF-I/IGFBP-3 and T IGF-II/IGFBP-3, as well as to the F/T IGF-I and F/T IGF-II. Finally, no relationship was found between the levels of the above-mentioned parameters and clinical activity scores, octreoscan scores, and thyroid hormones. Our data demonstrate for the first time that serum levels of IGFs (including free fractions) and IGFBPs are not increased in euthyroid Graves' patients with active TED. The increased IGF levels in retrobulbar tissues previously described, appear to be independent of serum IGFs concentration and probably represent autocrine and/or paracrine activity.
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Affiliation(s)
- G E Krassas
- Department of Endocrinology and Metabolism, Panagia General Hospital, 55132 Thessaloniki, Greece.
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39
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Abstract
BACKGROUND Plexiform fibrohistiocytic tumor (PFT) is a rare mesenchymal neoplasm first described by Enzinger and Zhang in 1988. Clinically it is characterized by slow growth, frequent local recurrences, and rare systemic metastasis. These tumors occur chiefly in children and young adults and are most commonly located on the shoulders and forearms. OBJECTIVE To present a case report of an incompletely excised PFT, its complete resection using simple excision and Mohs micrographic surgery, and review of the literature. METHODS An 11-year-old Hispanic girl was evaluated for the treatment of an incompletely excised plexiform fibrohistiocytic neoplasm located in the right axilla. Mohs micrographic surgery (MMS) was chosen because of the ill-defined borders and the need for tissue conservation. The patient underwent a two-stage, six section, micrographically controlled excision. Upon completion of the MMS a 2 mm final stage, taken as a peripheral and deep section around and underneath the cleared area, was submitted for paraffin embedding. Residual plexiform histiocytic tumor was found at the margin of resection in one location. Reevaluation of the Mohs slides demonstrated the possible presence of tumor at one deep focus. The tumor was reexcised with a 5 mm margin and repeat hematoxylin and eosin staining showed no residual tumor. There has been no evidence of recurrence in 4 years. RESULTS Complete resection of the PFT and absence of tumor recurrence 4 years later. CONCLUSION Over the past few years the list of neoplasms for which MMS is the treatment of choice has steadily grown. PFT is a recently described locally aggressive mesenchymal neoplasm with potential for distant metastasis. To our knowledge this is the first time MMS has been used to resect this tumor. To ensure the chance of complete extirpation we recommend the harvest of an additional stage for hematoxylin and eosin staining, as is done in some aggressive squamous cell carcinomas.
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Affiliation(s)
- A D Rahimi
- Mount Sinai Medical Center, New York, New York, USA
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40
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Abstract
The placenta of the elephant shrew, an African insectivore, was examined histochemically to resolve the controversy surrounding the nature of its interhemal membrane. Immunohistochemistry suggests that trophoblast abuts the maternal blood spaces, and evidence of maternal capillary basement membrane is lacking. The mature placenta of these species is thus hemochorial. Earlier developmental stages would require examination to rule out the possibility of a preceding endotheliochorial condition.
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Affiliation(s)
- J B Cutler
- Department of Obstetrics and Gynecology, State University of New York Health Science Center, Brooklyn, NY 11203, USA
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41
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Abstract
OBJECTIVE To compare the effects of a short period of mechanical ventilation and sedation and a longer one on cognitive functioning of patients exposed to cardiopulmonary bypass (CPB). DESIGN A randomized, prospective study. SETTING Tertiary-care university hospital. PARTICIPANTS Forty-eight adult patients with surgical coronary artery disease. INTERVENTION Elective coronary artery bypass surgery. MEASUREMENT AND MAIN RESULTS Patients (n = 48; mean age, 60.12+/-9.30 years) were randomized to either group I (mean delay, 3.49+/-2.21 hours) or group II (mean delay, 10.32+/-1.75 hours). Cognitive functioning was evaluated before surgery, postoperatively, and at the 8-week follow-up. Tests included measures of central nervous system integrity, attention/concentration and psychomotor performance, verbal fluency, visual scanning speed, mental flexibility, auditory and visual attention, and verbal memory. Covariance analyses were used for group comparisons. Covariates were age, education, and baseline or postoperative performance. No differences in cognitive functioning were found between the two groups. Globally, performance deteriorated for 34.1% of the patients at the posttest evaluation, whereas 2.3% improved and 63.6% remained unchanged. At follow-up, nearly 40.5% of the patients showed an improvement from baseline, 2.4% still had deficits, and 57.1% had no change. None of the cognitive functions appeared to be more affected than others. CONCLUSION Early extubation and a shortened period of anesthesia/analgesia do not appear to positively or negatively affect cognitive functioning at 3 to 5 days and 8 weeks postoperatively. Early extubation is suggested because it has no deleterious effect (besides the low risk for reintubation) and it may facilitate patients' care in the intensive care unit.
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Affiliation(s)
- A Dumas
- Department of Psychology, Université du Québec à Montréal, Canada
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42
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Cartier R, Leclerc Y, Searle N, Lachapelle C, Dumas A, Hudon G. Retrograde replacement of the thoracic aorta under circulatory arrest and retrograde cerebral perfusion. Can J Surg 1998; 41:383-7. [PMID: 9793506 PMCID: PMC3949777] [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] [Indexed: 02/09/2023] Open
Abstract
Single-stage replacement of the ascending, transverse and descending thoracic aorta remains a noteworthy surgical intervention associated with significant morbidity. Aside from the surgical aspects, brain preservation during the circulatory arrest period, which is generally needed to perform the procedure, is a constant preoccupation for the surgeon. A 43-year-old man had an extensive thoracic aneurysm 4 years after an initial type A aortic dissection involving the entire thoracic aorta. The Cooley technique of retrograde replacement of the thoracic aorta was performed along with retrograde cerebral perfusion. The combined sternal and thoracic approach suggested for this technique provided excellent exposure and, despite a circulatory arrest time of 88 minutes, the patient's cognitive abilities were found to be well preserved at follow-up 2 months after the surgery, indicating the efficacy of the cerebral retrograde perfusion. The authors conclude that retrograde replacement of the thoracic aorta combined with cerebral retrograde perfusion are convenient procedures that allow extensive aortic replacement without brain damage.
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Affiliation(s)
- R Cartier
- Department of Cardiovascular Surgery, Montreal Heart Institute, Que
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43
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Dumas A, Thung SN, Lin CS. Diffuse hyperplasia of the peribiliary glands. Arch Pathol Lab Med 1998; 122:87-9. [PMID: 9448024] [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] [Indexed: 02/05/2023]
Abstract
Diffuse, severe, macroscopically recognizable dilatation and hyperplasia of the peribiliary glands of intrahepatic and extrahepatic bile ducts is an extremely rare condition. To our knowledge, this is the first such case reported in the literature. We encountered this condition in a patient with massive hepatic necrosis. The pathogenesis of the condition is discussed. Unfamiliarity with this pathology could lead to an erroneous diagnosis of a well-differentiated cholangiocarcinoma.
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MESH Headings
- Adenocarcinoma/etiology
- Adenocarcinoma/pathology
- Autopsy
- Bile Duct Diseases/etiology
- Bile Duct Diseases/pathology
- Bile Duct Neoplasms/etiology
- Bile Duct Neoplasms/pathology
- Bile Ducts, Extrahepatic/diagnostic imaging
- Bile Ducts, Extrahepatic/pathology
- Bile Ducts, Intrahepatic/diagnostic imaging
- Bile Ducts, Intrahepatic/pathology
- Cholangiocarcinoma/etiology
- Cholangiocarcinoma/pathology
- Cholangitis, Sclerosing/etiology
- Cholangitis, Sclerosing/pathology
- Diagnosis, Differential
- Dilatation, Pathologic/etiology
- Dilatation, Pathologic/pathology
- Female
- Hamartoma/etiology
- Hamartoma/pathology
- Humans
- Hyperplasia/etiology
- Hyperplasia/pathology
- Hypertrophy/etiology
- Hypertrophy/pathology
- Liver/pathology
- Liver Failure, Acute/complications
- Liver Failure, Acute/pathology
- Middle Aged
- Necrosis
- Tomography, X-Ray Computed
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Affiliation(s)
- A Dumas
- Lillian and Henry M. Stratton-Hans Popper Department of Pathology, Mount Sinai School of Medicine of the City University of New York, NY 10029, USA
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45
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Bernat A, Hoffmann P, Dumas A, Serradeil-le Gal C, Raufaste D, Herbert JM. V2 receptor antagonism of DDAVP-induced release of hemostasis factors in conscious dogs. J Pharmacol Exp Ther 1997; 282:597-602. [PMID: 9262320] [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] [Indexed: 02/05/2023] Open
Abstract
The synthetic arginine vasopressin (AVP) analog 1-desamino-8-D-arginine vasopressin (DDAVP) is used in a variety of hemorrhagic disorders. The present experiments were designed to further characterize the mechanism of DDAVP-induced release of hemostasis factors. The [3H]AVP-labeled AVP receptor in canine renomedullary membranes exhibited an AVP V2 profile because the V2 receptor agonist DDAVP displayed similar subnanomolar affinities as the natural hormone AVP, whereas the two selective V1a compounds SR 49059 and d(CH2)5Tyr(Me)AVP as well as the selective V1b agonist D-Pal and oxytocin were much less potent. The rank order of the binding affinities of three V2 receptor antagonists was SR 121463 (a newly described selective V2 receptor antagonist) > OPC 31260 >> d(CH2)5D-Ile2,Ile4AVP. In conscious dogs, DDAVP (0.1-1 microg/kg I.V.) caused a dose-related increase (maximum, 43-52% at 30 min) in plasma levels of factor VIII (FVIII), von Willebrand factor (vWF) and tissue-type plasminogen activator (t-PA), but not in levels of plasminogen activator inhibitor-1. A DDAVP-induced hemostasis factor release was also observed in bilaterally nephrectomized dogs. Pretreatment with SR 121463 inhibited DDAVP-induced (1 microg/kg I.V.) increases in FVIII, vWF and t-PA plasma levels in a dose-dependent manner (ID50 = 14.0 +/- 4.0, 12.4 +/- 3.0 and 16.7 +/- 1.0 microg/kg I.V., respectively). OPC 31260 (300 microg/kg I.V.) revealed a lower activity than SR 121463, and d(CH2)5[D-Ile2,Ile4]AVP (30 microg/kg I.V.) was without effect on the DDAVP response. Pretreatment with SR 49059 (1 mg/kg I.V.) and SR 27417 (a platelet-activating factor receptor antagonist) (1 mg/kg I.V.) had no effect on the DDAVP-induced (1 microg/kg I.V.) increases in FVIII, vWF and t-PA plasma levels. The present results, therefore, strongly suggest that the effect of DDAVP on hemostasis factors occurs via a specific interaction with extrarenal V2 receptors.
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Affiliation(s)
- A Bernat
- Sanofi Recherche, Toulouse, France
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46
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Krassas G, Kaltsas T, Pontikides N, Dumas A. Somatostatin therapy and Graves' ophthalmopathy. Thyroid 1997; 7:489. [PMID: 9226222 DOI: 10.1089/thy.1997.7.489] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
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Hoffmann P, Bernat A, Dumas A, Petitou M, Hérault JP, Herbert JM. The synthetic pentasaccharide SR 90107A/Org 31540 does not release lipase activity into the plasma. Thromb Res 1997; 86:325-32. [PMID: 9187020 DOI: 10.1016/s0049-3848(97)00075-3] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Abstract
The present study was designed to find out whether the synthetic pentasaccharide SR 90107A/Org 31540, which is presently being evaluated in clinical trials as an antithrombotic agent, influences lipoprotein metabolism in rats as determined by plasma triglyceride (TG) lipase activity. A comparison with three clinically used sulphated polysaccharides-unfractionated heparin (UFH), low molecular weight heparin (LMWH) and pentosan polysulphate (PPS)- was performed. UFH evoked a dose-dependent increase in plasma TG lipase activity which plateaued at doses > or = 1 mg/kg i.v.. PPS and LMWH demonstrated a lower efficacy than heparin at 0.3 and 1 mg/kg i.v., but the maximum lipase releasing effect at 3 mg/kg i.v. was identical for UFH, PPS and LMWH. SR 90107A/Org 31540 did not release TG lipase activity at single i.v. doses up to 3 mg/kg. Repeated-dose experiments with SR 90107A/Org 31540 (1 mg/kg s.c. for 9 days) revealed no influence on the lipase releasing effect of UFH (1 mg/kg i.v. on day 10). These results demonstrate that SR 90107A/Org 31540 does not influence lipid metabolism in rats through lipase release, suggesting that SR 90107A/Org 31540 may offer an advantage over UFH and LMWH in clinical situations where an anticoagulant/antithrombotic effect is desired, but both an increase in plasma free fatty acids and atherogenic alterations of lipoprotein metabolism are considered harmful.
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Affiliation(s)
- P Hoffmann
- Sanofi Recherche, Haemobiology Research Department, Toulouse, France
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48
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49
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Abstract
Octreotide, a potent synthetic somatostatin (SM) analogue, was recently evaluated and found to have a beneficial effect in thyroid eye disease (TED), mostly in those patients with a positive Octreoscan-111. Lanreotide (LRT; Somatuline-Ipsen), a new SM long-acting analogue, is more active than natural SM and shows a much longer duration of action. The aim of the present preliminary study was to evaluate the therapeutic effect of LRT in the treatment of TED. Five patients, three males and two females, mean age 50.6 +/- 7.6 S.D. (45-64) years, all with severe symptoms of TED were studied. A similar number of patients, matched for age, sex and severity of ophthalmopathy served as controls. All the patients and controls were investigated with orbital scintigraphy using 111 In DTPA-D-Phe1-octreotide (Octreoscan-111) and selected on the basis of positive octreoscan. The NOSPECS system, as adapted by Donaldson et al. (Journal of Clinical Endocrinology and Metabolism 1973 37 276-285) and a disease activity score, as proposed recently by an International Workshop, have been followed in this study in order to evaluate the response to treatment. The five patients who comprised the treatment group received 0.04 g LRT i.m. once every 2 weeks over a period of 3 months, after which the Octreoscan-111 was repeated. The control patients were given an injection of water i.m., also once every 2 weeks for 3 months, after which they were evaluated clinically. No Octreoscan-111 was performed in the controls. All patients and controls were evaluated by the same physician, who was unaware of the type of treatment used. A decrease in the NOSPECS score and the clinical activity score was regarded as a positive response, while no change or an increase in the NOSPECS score along with no clinical improvement was regarded as a negative response. After 3 months of treatment with LRT, four patients showed a statistically significant improvement in ophthalmopathy in both eyes and one in one eye. Three of the control patients with TED did not show any change, one showed a minor improvement in one eye and no change in the other and one showed deterioration in both eyes. An interesting finding was that orbital Octreoscan-111 activity was absent in all the patients after LRT treatment. In conclusion, these preliminary results show that LRT has a beneficial effect on patients with TED, and that since it has to be given only once every 2 weeks, it is probably superior to any other form of SM treatment. However, as the number of patients was small, further studies are needed to confirm our results.
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Affiliation(s)
- G E Krassas
- Endocrine Clinic Panagia Hospital, Thessaloniki, Greece
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50
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Abstract
OBJECTIVE Octreotide, a potent long-acting synthetic somatostatin analogue, has been reported to have a beneficial effect in thyroid eye disease (TED), but the precise mechanism of action remains unexplained. 111In-DTPA-D-Phe1-octreotide (Octreoscan-111) has been used to localize a number of endocrine tumours and visualize somatostatin receptors in the retrobulbar tissue of patients with TED. Furthermore, this technique can predict the inhibitory effect of octreotide on hormone secretion by endocrine tumours, as there is a close relation between the clinically observed inhibition and visualization of the tumour using Octreoscan-111. The aims of the present study were to confirm the beneficial effect of octreotide in patients with TED, to investigate the presence of somatostatin receptors in the orbital area and also, if possible, to ascertain whether this technique could select those patients with TED who might benefit from treatment with octreotide. DESIGN A prospective study. SETTING An endocrine clinic of a national hospital. PATIENTS Twenty treated thyrotoxic patients with TED, 5 treated thyrotoxic patients without TED and 5 normal individuals were studied. In 12 patients with TED, 5 without TED and 5 normal individuals, Octreoscan-111 scintigraphy of the orbits was performed. The remaining 8 patients with ophthalmopathy served as controls. In patients with TED who were investigated with Octreoscan-111, 300 micrograms octreotide daily was given for 12 weeks. RESULTS Six patients in both eyes and one patient in one eye showed an improvement in ocular manifestations as assessed by clinical criteria and changes in the NOSPECS score, while the rest showed no improvement. The patients who showed an improvement had a high number of somatostatin receptors and positive orbital scans, while with one exception the patients who did not respond had a low number of receptors and negative orbital scans (P < 0.02). None of the 5 patients without TED nor the normal individuals had a positive orbital scan. Seven out of 8 control patients with TED showed no change in the disease during the trial, while 1 deteriorated. CONCLUSIONS We conclude that octreotide has a beneficial effect in thyroid eye disease and that Octreoscan-111 could predict those patients with thyroid eye disease who might benefit from this treatment.
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Affiliation(s)
- G E Krassas
- Endocrine Clinic Panagia Hospital, Thessaloniki, Greece
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