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Zysset A, Robin D, Albermann K, Dratva J, Hotz S, Wieber F, von Rhein M. Diagnosis and management of ADHD: a pediatric perspective on practice and challenges in Switzerland. BMC Pediatr 2023; 23:103. [PMID: 36869280 PMCID: PMC9985195 DOI: 10.1186/s12887-023-03873-x] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/10/2022] [Accepted: 01/27/2023] [Indexed: 03/05/2023] Open
Abstract
BACKGROUND Attention deficit/hyperactivity disorder (ADHD) is one of the most prevalent psychiatric disorders in childhood. In Switzerland, the complex diagnosis and treatment are being carried out by adolescent-/child psychiatrists, and pediatricians. Guidelines recommend a multimodal therapy for patients with ADHD. However, it has been questioned whether health professionals follow this approach or favor drug therapy. This study aims to provide insights into the practice of pediatricians in Switzerland regarding diagnosis and treatment of ADHD and their perceptions of these processes. METHOD An online survey (self-report) about current practices of diagnosis and management as well as challenges regarding ADHD was distributed to office-based pediatricians in Switzerland. One hundred fifty-one pediatricians participated. Results show that therapy options were almost always discussed with parents and older children. Exchange with parents (81%) and level of child's suffering (97%) were central when selecting therapy options. RESULTS Therapies about which pediatricians informed most often were: pharmacological therapy, psychotherapy, and multimodal therapy. Challenges voiced were the subjectivity of diagnostic criteria and dependence on third parties, low availability of psychotherapy, and a rather negative public attitude towards ADHD. Needs that were expressed were further education for all professionals, support for coordination with specialists and schools as well as improvement of information on ADHD. CONCLUSIONS Pediatricians do consider a multimodal approach when treating ADHD and take the families` and children's opinions into account. Improvements of the availability of child and youth psychotherapy, the strengthening of the interprofessional cooperation with therapists and schools, and efforts to increase public knowledge about ADHD are proposed.
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Affiliation(s)
- A Zysset
- ZHAW Zurich University of Applied Sciences, Winterthur, Switzerland
| | - D Robin
- ZHAW Zurich University of Applied Sciences, Winterthur, Switzerland
| | - K Albermann
- Centre of Social Pediatrics, Cantonal Hospital Winterthur, Winterthur, Switzerland
| | - J Dratva
- ZHAW Zurich University of Applied Sciences, Winterthur, Switzerland.,University of Basel, Basel, Switzerland
| | - S Hotz
- University Neuchatel, Neuchatel, Switzerland
| | - F Wieber
- ZHAW Zurich University of Applied Sciences, Winterthur, Switzerland. .,University of Konstanz, Constance, Germany.
| | - M von Rhein
- University Children's Hospital Zurich, Zurich, Switzerland.,University of Zurich, Zurich, Switzerland
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Dratva J, Kerry M, Albermann K, Robin D. Teachers’ mental health literacy and action competencies. Eur J Public Health 2022. [DOI: 10.1093/eurpub/ckac129.250] [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
Teachers are very important in mental health promotion and early recognition of mental health burden (disorder, illness). Teachers’ surrogate mental health literacy (MHL) may be key to improving mental health in youth but has been little investigated. We assessed surrogate MHL in Swiss teachers and tested a measure of mental health action competencies (MHAC).
Methods
In 2020, all teaching and support staff at compulsory school level were invited to an online survey covering individual and professional characteristics, MHL (finding, understanding, critical appraisal of information) and action competencies (adapted scale Ahnert et al. 2016, range 17 - 68) personal experience with students’ MHB. Data was explored descriptively and with multivariate regression. Item response theory analyses were conducted to examine internal psychometric MHAC scale properties, and group-mean differences tested between school levels.
Results
Participation rate was 38% (N = 459). Nearly all participants had taught at least 1 mentally burdened student in the past year (average 4.7). 77% felt experienced to very experienced regarding these students. Only 32% felt they had sufficient tools and teaching resources. Participants felt it was difficult to very difficult to find (47%), understand (53%) and appraise (90%) information on students’ mental health. Kindergarden teachers and teachers without class responsibility showed significantly lower MHL. Internal psychometric properties of the MHAC measure support the use of a 1-factor scale and indicates discriminant validity with respect to age; experience and school level, median score was high (P50 48, P25 44, P75 53), but single items, e.g. on suicide signs, were rated low.
Conclusions
While overall subjective MHAC are high, teachers are insecure regarding MHL and report a lack of tools and resources. Targeted training could strengthen surrogate mental health literacy with a focus on critical appraisal and certain action competencies.
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Affiliation(s)
- J Dratva
- Institute for Public Health, ZHAW Zürich University of Applied Sciences , Winterthur, Switzerland
| | - M Kerry
- Institute for Public Health, ZHAW Zürich University of Applied Sciences , Winterthur, Switzerland
| | - K Albermann
- Social Pediatric Center SPZ, Winterthur Cantonal Hospital , Winterthur, Switzerland
| | - D Robin
- Institute for Public Health, ZHAW Zürich University of Applied Sciences , Winterthur, Switzerland
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El Akri M, Bentellis I, Tricard T, Brierre T, Cousin T, Dupuis H, Hermieu N, Gaillard V, Poussot B, Robin D, Pitout A, Bertrand-Leon P, Chevallier D, Bruyere F, Biardeau X, Monsaint H, Corbel L, Saussine C, Hermieu J, Lecoanet P, Capon G, Cornu JN, Game X, Ruffion A, Peyronnet B. Transcorporal vs. bulbar artificial urinary sphincter implantation in male patients with fragile urethra. Eur Urol 2022. [DOI: 10.1016/s0302-2838(22)00664-9] [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: 11/04/2022]
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Robin D, Peyronnet B, Bentellis I, El-Akri M, Cornu JN, Brierre T, Cousin T, Gaillard V, Poussot B, Dupuis H, Tricard T, Hermieu N, Pitout A, Beraud F, Chevallier D, Bruyere F, Biardeau X, Monsaint H, Corbel L, Hermieu JF, Lecoanet P, Capon G, Saussine C, Gamé X, Léon P. Sphincter urinaire artificiel chez les patients présentant une incontinence urinaire après High Intensivity Focused Ultrasound Therapy. Prog Urol 2022; 32:284-290. [DOI: 10.1016/j.purol.2021.11.004] [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] [Received: 08/24/2021] [Revised: 11/14/2021] [Accepted: 11/15/2021] [Indexed: 10/19/2022]
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Robin D, Staerman F. Comparaison des performances de la micro-échographie 29 MHz à l’imagerie par résonance magnétique multiparamétrique pour la détection des cancers de prostate cliniquement significatifs. Prog Urol 2021. [DOI: 10.1016/j.purol.2021.08.080] [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: 10/19/2022]
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Taha F, Branchu B, Robin D, Joncour C, Larré S. Biopsies prostatiques guidées par fusion d’images IRM Koelis® : impact de l’expérience de l’opérateur sur la détection des cancers. Prog Urol 2021. [DOI: 10.1016/j.purol.2021.08.071] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Bentellis I, El-Akri M, Cornu JN, Brierre T, Cousin T, Gaillard V, Poussot B, Dupuis H, Hermieu N, Robin D, Pitout A, Beraud F, Bertrand-Leon P, Chevallier D, Bruyere F, Biardeau X, Monsaint H, Corbel L, Hermieu JF, Lecoanet P, Capon G, Game X, Saussine C, Durand M, Peyronnet B. Impact of the center volume activity on the results of artificial urinary sphincter in non-neurological male patients. Eur Urol 2021. [DOI: 10.1016/s0302-2838(21)00506-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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Bentellis I, El-Akri M, Cornu J, Brierre T, Cousin T, Gaillard V, Poussot B, Dupuis H, Hermieu N, Robin D, Pitout A, Beraud F, Bertrand-Leon P, Chevallier D, Bruyere F, Biardeau X, Monsaint H, Corbel L, Hermieu J, Lecoanet P, Capon G, Game X, Saussine C, Durand M, Peyronnet B. Prevalence and risk factors of artificial urinary sphincter revision in non-neurological male patients. Eur Urol 2021. [DOI: 10.1016/s0302-2838(21)00507-8] [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: 11/29/2022]
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Mamane J, Sanchez S, Lellouch A, El-Akrhi M, Cousin T, Capon G, Bentellis I, Chevallier D, Durand M, Robin D, Cornu JN, Dupuis H, Gaillard V, Poussot B, Tricard T, Saussine C, Ruffion A, Pitout A, Lecoanet P, Hermieu N, Hermieu JF, Peyronnet B, Bertrand-Leon P. Outcomes of artificial urinary sphincter implantation in irradiated patients: A multicenter study. Eur Urol 2021. [DOI: 10.1016/s0302-2838(21)00508-x] [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]
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El-Akri M, Bentellis I, Tricard T, Brierre T, Cousin T, Depuis H, Hermieu N, Robin D, Poussot B, Bertrand P, Chevallier D, Bruyère F, Saussine C, Lecoanet P, Capon G, Hermieu J, Cornu J, Gamé X, Ruffion A, Peyronnet B. Comparaison de l’implantation transcaverneuse d’un sphincter artificiel urinaire artificiel en primo-implantation vs en réimplantation. Prog Urol 2020. [DOI: 10.1016/j.purol.2020.07.145] [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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Morlet E, Costemale-Lacoste JF, Poulet E, McMahon K, Hoertel N, Limosin F, Alezrah C, Amado I, Amar G, Andréi O, Arbault D, Archambault G, Aurifeuille G, Barrière S, Béra-Potelle C, Blumenstock Y, Bardou H, Bareil-Guérin M, Barrau P, Barrouillet C, Baup E, Bazin N, Beaufils B, Ben Ayed J, Benoit M, Benyacoub K, Bichet T, Blanadet F, Blanc O, Blanc-Comiti J, Boussiron D, Bouysse AM, Brochard A, Brochart O, Bucheron B, Cabot M, Camus V, Chabannes JM, Charlot V, Charpeaud T, Clad-Mor C, Combes C, Comisu M, Cordier B, Costi F, Courcelles JP, Creixell M, Cuche H, Cuervo-Lombard C, Dammak A, Da Rin D, Denis JB, Denizot H, Deperthuis A, Diers E, Dirami S, Donneau D, Dreano P, Dubertret C, Duprat E, Duthoit D, Fernandez C, Fonfrede P, Freitas N, Gasnier P, Gauillard J, Getten F, Gierski F, Godart F, Gourevitch R, Grassin Delyle A, Gremion J, Gres H, Griner V, Guerin-Langlois C, Guggiari C, Guillin O, Hadaoui H, Haffen E, Hanon C, Haouzir S, Hazif-Thomas C, Heron A, Hubsch B, Jalenques I, Januel D, Kaladjian A, Karnycheff JF, Kebir O, Krebs MO, Lajugie C, Leboyer M, Legrand P, Lejoyeux M, Lemaire V, Leroy E, Levy-Chavagnat D, Leydier A, Liling C, Llorca PM, Loeffel P, Louville P, Lucas Navarro S, Mages N, Mahi M, Maillet O, Manetti A, Martelli C, Martin P, Masson M, Maurs-Ferrer I, Mauvieux J, Mazmanian S, Mechin E, Mekaoui L, Meniai M, Metton A, Mihoubi A, Miron M, Mora G, Niro Adès V, Nubukpo P, Omnes C, Papin S, Paris P, Passerieux C, Pellerin J, Perlbarg J, Perron S, Petit A, Petitjean F, Portefaix C, Pringuey D, Radtchenko A, Rahiou H, Raucher-Chéné D, Rauzy A, Reinheimer L, Renard M, René M, Rengade CE, Reynaud P, Robin D, Rodrigues C, Rollet A, Rondepierre F, Rousselot B, Rubingher S, Saba G, Salvarelli JP, Samuelian JC, Scemama-Ammar C, Schurhoff F, Schuster JP, Sechter D, Segalas B, Seguret T, Seigneurie AS, Semmak A, Slama F, Taisne S, Taleb M, Terra JL, Thefenne D, Tran E, Tourtauchaux R, Vacheron MN, Vandel P, Vanhoucke V, Venet E, Verdoux H, Viala A, Vidon G, Vitre M, Vurpas JL, Wagermez C, Walter M, Yon L, Zendjidjian X. Psychiatric and physical outcomes of long-term use of lithium in older adults with bipolar disorder and major depressive disorder: A cross-sectional multicenter study. J Affect Disord 2019; 259:210-217. [PMID: 31446382 DOI: 10.1016/j.jad.2019.08.056] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/15/2019] [Revised: 07/11/2019] [Accepted: 08/18/2019] [Indexed: 12/19/2022]
Abstract
OBJECTIVE Although lithium is widely used in current practice to treat bipolar disorder (BD) and treatment-resistant major depressive disorder (MDD) among older adults, little is known about its efficacy and tolerability in this population, which is generally excluded from randomized clinical trials. The objective of this study was to evaluate the efficacy and tolerability of long-term use of lithium among older adults with BD and MDD. METHOD Data from the Cohort of individuals with Schizophrenia and mood disorders Aged 55 years or more (CSA) were used. Two groups of patients with BD and MDD were compared: those who were currently receiving lithium versus those who were not. The effects of lithium on psychiatric (i.e., depressive symptoms severity, perceived clinical severity, rates of psychiatric admissions in the past-year), geriatric (overall and cognitive functioning) and physical outcomes (i.e., rates of non-psychiatric medical comorbidities and general hospital admissions in the past-year) were evaluated. All analyses were adjusted for age, sex, duration of disorder, diagnosis, smoking status, alcohol use, and use of antipsychotics, antiepileptics or antidepressants. RESULTS Among the 281 older participants with BD or MDD, 15.7% were taking lithium for a mean duration of 12.5(SD = 11.6) years. Lithium use was associated with lower intensity of depressive symptoms, reduced perceived clinical global severity and lower benzodiazepine use (all p < 0.05), without being linked to greater rates of medical comorbidities, except for hypothyroidism. LIMITATIONS Data were cross-sectional and data on lifetime history of psychotropic medications was not assessed. CONCLUSION Our results suggest that long-term lithium use may be efficient and relatively well-tolerated in older adults with BD or treatment-resistant MDD.
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Affiliation(s)
- Elise Morlet
- Department of Psychiatry, Corentin Celton Hospital, 4 Parvis Corentin Celton, 92130 Issy-les-Moulineaux, France
| | - Jean-François Costemale-Lacoste
- Department of Psychiatry, Corentin Celton Hospital, 4 Parvis Corentin Celton, 92130 Issy-les-Moulineaux, France; INSERM UMRS 1178, CESP, Le Kremlin Bicêtre, France.
| | - Emmanuel Poulet
- INSERM, U1028, CNRS, UMR5292, Lyon Neuroscience Research Center, PSY-R2 Team, Lyon F-69000, France
| | - Kibby McMahon
- Department of Psychology & Neuroscience, Duke University, 2213 Elba Street, Durham, NC 27710, United States
| | - Nicolas Hoertel
- Department of Psychiatry, Corentin Celton Hospital, 4 Parvis Corentin Celton, 92130 Issy-les-Moulineaux, France; INSERM UMR 894, Psychiatry and Neurosciences Center, Paris, France; Paris Descartes University, Sorbonne Paris Cité, Paris, France
| | - Frédéric Limosin
- Department of Psychiatry, Corentin Celton Hospital, 4 Parvis Corentin Celton, 92130 Issy-les-Moulineaux, France; INSERM UMR 894, Psychiatry and Neurosciences Center, Paris, France; Paris Descartes University, Sorbonne Paris Cité, Paris, France
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Dratva J, Baumann I, Jaks R, Robin D, Juvalta S. “Dear Internet, what should I do when…?” - parents searching for child health information. Eur J Public Health 2018. [DOI: 10.1093/eurpub/cky218.233] [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: 11/12/2022] Open
Affiliation(s)
- J Dratva
- ZHAW Department of Health, Winterthur, Switzerland
| | - I Baumann
- ZHAW Department of Health, Winterthur, Switzerland
| | - R Jaks
- ZHAW Department of Health, Winterthur, Switzerland
| | - D Robin
- ZHAW Department of Health, Winterthur, Switzerland
| | - S Juvalta
- ZHAW Department of Health, Winterthur, Switzerland
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Dratva J, Juvalta S, Jaks R, Robin D, Baumann I. Digital health literacy of Swiss-German parents. Eur J Public Health 2018. [DOI: 10.1093/eurpub/cky218.232] [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: 11/13/2022] Open
Affiliation(s)
- J Dratva
- ZHAW Department of Health, Winterthur, Switzerland
| | - S Juvalta
- ZHAW Department of Health, Winterthur, Switzerland
| | - R Jaks
- ZHAW Department of Health, Winterthur, Switzerland
| | - D Robin
- ZHAW Department of Health, Winterthur, Switzerland
| | - I Baumann
- ZHAW Department of Health, Winterthur, Switzerland
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Robin D, Dratva J. Why parents decide for a pharmacological treatment for their child’s ADHD. Eur J Public Health 2017. [DOI: 10.1093/eurpub/ckx186.271] [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: 11/14/2022] Open
Affiliation(s)
- D Robin
- Institute of Health Sciences, ZHAW (School of Health Professions), Winterthur, Switzerland
| | - J Dratva
- Institute of Health Sciences, ZHAW (School of Health Professions), Winterthur, Switzerland
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Tarawneh H, Steier C, Falcone R, Robin D, Nishimura H, Sun C, Wan W. ALS-II, a Potential Soft X-ray, Diffraction Limited Upgrade of the Advanced Light Source. ACTA ACUST UNITED AC 2014. [DOI: 10.1088/1742-6596/493/1/012020] [Citation(s) in RCA: 3] [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: 11/11/2022]
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Steier C, Madur A, Bailey B, Berg K, Biocca A, Black A, Casey P, Colomb D, Gunion B, Li N, Marks S, Nishimura H, Pappas C, Petermann K, Portmann G, Prestemon S, Rawlins A, Robin D, Rossi S, Scarvie T, Schlueter R, Sun C, Tarawneh H, Wan W, Williams E, Yin L, Zhou Q, Jin J, Zhang J, Chen C, Wen Y, Wu J. Completion of the Brightness Upgrade of the ALS. ACTA ACUST UNITED AC 2014. [DOI: 10.1088/1742-6596/493/1/012030] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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Crevier-Denoix N, Camus M, Falala S, Ravary-Plumioen B, Douilly-Holden L, Robin D, Denoix JM, Chateau H, Pourcelot P. External loads on the leading and trailing forelimbs of a jumping horse at landing measured with a dynamometric horseshoe. Comput Methods Biomech Biomed Engin 2013; 16 Suppl 1:145-6. [DOI: 10.1080/10255842.2013.815981] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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Camus M, Chateau H, Holden-Douilly L, Robin D, Falala S, Ravary-Plumiöen B, Pourcelot P, Crevier-Denoix N. Use of a 3D dynamometric horseshoe for the measurement of grip parameters in a horse cantering on right and left circles on two surfaces. Comput Methods Biomech Biomed Engin 2012; 15 Suppl 1:132-4. [PMID: 23009453 DOI: 10.1080/10255842.2012.713656] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
Affiliation(s)
- M Camus
- Université Paris-Est, Ecole Nationale Vétérinaire d'Alfort, USC 957 BPLC, F-94700, Maisons-Alfort, France.
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Saint-André S, Neira Zalentein W, Robin D, Lazartigues A. La télépsychiatrie au service de l’autisme. Encephale 2011; 37:18-24. [DOI: 10.1016/j.encep.2010.03.010] [Citation(s) in RCA: 5] [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: 06/02/2009] [Accepted: 10/19/2009] [Indexed: 11/25/2022]
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Robin D, Chateau H, Jacobs F, Estoup P, Holden L, Falala S, Pourcelot P, Crevier-Denoix N. Suitability of a dynamometric horseshoe for the recording of the ground reaction forces on ridden horses. Comput Methods Biomech Biomed Engin 2010. [DOI: 10.1080/10255842.2010.495871] [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: 10/19/2022]
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Crevier-Denoix N, Pourcelot P, Ravary B, Robin D, Falala S, Uzel S, Grison AC, Valette JP, Denoix JM, Chateau H. Influence of track surface on the equine superficial digital flexor tendon loading in two horses at high speed trot. Equine Vet J 2010; 41:257-61. [PMID: 19469232 DOI: 10.2746/042516409x394445] [Citation(s) in RCA: 37] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Affiliation(s)
- N Crevier-Denoix
- UMR INRA-ENVA 957 de Biomécanique et Pathologie Locomotrice du Cheval, Ecole Vétérinaire d'Alfort, 7 avenue du Général de Gaulle, 94704 Maisons-Alfort Cedex, France
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Chateau H, Robin D, Falala S, Pourcelot P, Valette JP, Ravary B, Denoix JM, Crevier-Denoix N. Effects of a synthetic all-weather waxed track versus a crushed sand track on 3D acceleration of the front hoof in three horses trotting at high speed. Equine Vet J 2010; 41:247-51. [PMID: 19469230 DOI: 10.2746/042516409x394463] [Citation(s) in RCA: 39] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Affiliation(s)
- H Chateau
- UMR INRA-ENVA 957 de Biomécanique et Pathologie Locomotrice du Cheval, Ecole Nationale Vétérinaire d'Alfort, 7, avenue du Général de Gaulle - 94704 Maisons-Alfort, France
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Robin D, Chateau H, Pacquet L, Falala S, Valette JP, Pourcelot P, Ravary B, Denoix JM, Crevier-Denoix N. Use of a 3D dynamometric horseshoe to assess the effects of an all-weather waxed track and a crushed sand track at high speed trot: Preliminary study. Equine Vet J 2010; 41:253-6. [PMID: 19469231 DOI: 10.2746/042516409x397965] [Citation(s) in RCA: 33] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Affiliation(s)
- D Robin
- UMR INRA-ENVA 957 de Biomécanique et Pathologie Locomotrice du Cheval, Ecole Nationale Vétérinaire d'Alfort, 7, avenue du Général de Gaulle, 94704 Maisons-Alfort cedex, France
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Corlett J, Baptiste K, Byrd JM, Denes P, Falcone R, Kirz J, McCurdy W, Padmore H, Penn G, Qiang J, Robin D, Sannibale F, Schoenlein R, Staples J, Steier C, Venturini M, Wan W, Wells R, Wilcox R, Zholents A. Design Studies for a VUV–Soft X-ray Free-Electron Laser Array. ACTA ACUST UNITED AC 2009. [DOI: 10.1080/08940880903256817] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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Robin D, Chateau H, Falala S, Valette J, Pourcelot P, Ravary B, Denoix JM, Crevier-Denoix N. Ground reaction forces in the horse at the walk, trot and gallop measured with an instrumented shoe. Comput Methods Biomech Biomed Engin 2008. [DOI: 10.1080/10255840802298869] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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Crevier-Denoix N, Pourcelot P, Ravary B, Robin D, Falala S, Valette JP, Denoix JM, Chateau H. Non invasive measurement of equine superficial digital flexor tendon loading at high speed trot on different track surfaces. Comput Methods Biomech Biomed Engin 2008. [DOI: 10.1080/10255840802296616] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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Chateau H, Robin D, Veniard N, Falala S, Pourcelot P, Valette JP, Ravary B, Denoix JM, Crevier-Denoix N. Reliability and sensitivity of an accelerometric device to discriminate between the biomechanical effects of different racetracks in the horse trotting at high speed. Comput Methods Biomech Biomed Engin 2008. [DOI: 10.1080/10255840802296699] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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Steier C, Robin D, Nadolski L, Decking W, Wu Y, Laskar J. Measuring and optimizing the momentum aperture in a particle accelerator. Phys Rev E Stat Nonlin Soft Matter Phys 2002; 65:056506. [PMID: 12059724 DOI: 10.1103/physreve.65.056506] [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] [Subscribe] [Scholar Register] [Received: 12/24/2001] [Indexed: 05/23/2023]
Abstract
Particle motion in storage rings is confined by various aperture limits, the size of which restricts the performance of the ring in terms of injection efficiency, lifetime, etc. Intrabeam scattering makes particles sweep a large portion of the phase space, where their motion may eventually be resonantly or chaotically excited to large amplitudes leading to collision with the vacuum chamber. We report here the studies performed at the Advanced Light Source (ALS) on the on- and off-momentum particle motion that provides a good understanding of these limitations. Using off-momentum simulations and experiments together with frequency map analysis, we could precisely correlate beam loss areas with resonance locations. The very good agreement between simulations and experiments allowed us to provide guidance for avoiding these dangerous areas. This analysis results in predictive improvements of the momentum aperture, which actually led to a lifetime increase of 25% at the ALS for very high bunch charge.
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Affiliation(s)
- C Steier
- Lawrence Berkeley National Laboratory, Berkeley, California 94720, USA
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Maas E, Barlow J, Robin D, Shapiro L. Treatment of sound errors in aphasia and apraxia of speech: Effects of phonological complexity. Aphasiology 2002; 16:609-622. [PMID: 22787286 PMCID: PMC3392129 DOI: 10.1080/02687030244000266] [Citation(s) in RCA: 19] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/12/2023]
Abstract
BACKGROUND: Recent research suggests that the complexity of treatment stimuli influences the effectiveness of treatment. However, no studies have examined the role of complexity on sound production treatment in adult individuals with sound production impairments. AIMS: This study examines effects of syllable complexity on treatment outcome in two patients with acquired sound production problems. Complexity is defined in terms of syllable structure: clusters are more complex than singletons. Using a single-subject multiple-baseline design, we address the question: Is treatment of complex syllables more effective than treatment of simple syllables? METHODS #ENTITYSTARTX00026; PROCEDURES: Two patients with aphasia and apraxia of speech were trained to produce complex or simple syllables (using modelling). Improvement was measured by percent correct on a word and nonword repetition test. OUTCOMES #ENTITYSTARTX00026; RESULTS: We found that both treatment on simple syllables and treatment on complex syllables led to improved production of simple syllables, while treatment of complex syllables also led to improvement on some complex syllables for one of the two patients. CONCLUSIONS: These results suggests that training complex items is more effective than training simple items, at least for some patients. Possible reasons for lack of stronger effects are discussed, as well as directions for future research.
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Affiliation(s)
- E Maas
- San Diego State University, CA, USA
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Vigilant MH, Touraine M, Prieur J, Robin D. [From participating management to constructive management]. Soins Form Pedagog Encadr 2001:38-40. [PMID: 11111707] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/18/2023]
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Abstract
Incomplete ossification of the humeral condyle (IOHC) was identified in two Labrador retrievers using computed tomography. Both dogs were non-weightbearing on the affected forelimbs. The dogs were treated by means of a bone screw placed across the humeral condyle. IOHC was originally reported in spaniel and chondrodystrophic breeds. The pathogenesis of the condition remains unknown, but may be related to impaired antebrachial bone growth, similarly to the pathogeneses of elbow dysplasia and radius curvus.
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Affiliation(s)
- D Robin
- Clinique Vétérinaire Beaulieu, Poitiers, France
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Bingham GP, Zaal F, Robin D, Shull JA. Distortions in definite distance and shape perception as measured by reaching without and with haptic feedback. J Exp Psychol Hum Percept Perform 2000. [PMID: 10946724 DOI: 10.1037//0096-1523.26.4.1436] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
Psychophysical studies reveal distortions in perception of distance and shape. Are reaches calibrated to eliminate distortions? Participants reached to the front, side, or back of a target sphere. In Experiment 1, feedforward reaches yielded distortion and outward drift. In Experiment 2, haptic feedback corrected distortions and instability. In Experiment 3, feedforward reaches with only haptic experience of targets replicated the shape distortions but drifted inward. This showed that outward drift in Experiment 1 was visually driven. In Experiment 4, visually guided reaches were accurate when participants used binocular vision but when they used monocular vision, reaches were distorted. Haptic feedback corrected inaccuracy and instability of distance but did not correct monocular shape distortions. Dynamic binocular vision is representative and accurate and merits further study.
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Affiliation(s)
- G P Bingham
- Department of Psychology, Indiana University, Bloomington 47405, USA.
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Bingham GP, Zaal F, Robin D, Shull JA. Distortions in definite distance and shape perception as measured by reaching without and with haptic feedback. J Exp Psychol Hum Percept Perform 2000; 26:1436-60. [PMID: 10946724 DOI: 10.1037/0096-1523.26.4.1436] [Citation(s) in RCA: 41] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
Psychophysical studies reveal distortions in perception of distance and shape. Are reaches calibrated to eliminate distortions? Participants reached to the front, side, or back of a target sphere. In Experiment 1, feedforward reaches yielded distortion and outward drift. In Experiment 2, haptic feedback corrected distortions and instability. In Experiment 3, feedforward reaches with only haptic experience of targets replicated the shape distortions but drifted inward. This showed that outward drift in Experiment 1 was visually driven. In Experiment 4, visually guided reaches were accurate when participants used binocular vision but when they used monocular vision, reaches were distorted. Haptic feedback corrected inaccuracy and instability of distance but did not correct monocular shape distortions. Dynamic binocular vision is representative and accurate and merits further study.
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Affiliation(s)
- G P Bingham
- Department of Psychology, Indiana University, Bloomington 47405, USA.
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Robin D, Steier C, Laskar J, Nadolski L. Global dynamics of the advanced light source revealed through experimental frequency map analysis. Phys Rev Lett 2000; 85:558-561. [PMID: 10991339 DOI: 10.1103/physrevlett.85.558] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/27/1999] [Indexed: 05/23/2023]
Abstract
Frequency map analysis was first used for the dynamical study of numerical simulations of physical systems (solar system, galaxies, particle accelerators). Here it is applied directly to the experimental results obtained at the Advanced Light Source. For the first time, the network of coupling resonances is clearly visible in an experiment, in a similar way as in the numerical simulation. Excellent agreement between numerical and experimental results leads us to propose this technique as a tool for improving numerical models and actual behavior of particle accelerators. Moreover, it provides a model-independent diagnostic for the evaluation of the dynamical properties of the beam.
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Affiliation(s)
- D Robin
- Lawrence Berkeley National Laboratory, 1 Cyclotron Road, Berkeley, California 94720, USA
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Abstract
The aim of the work presented here is to study airborne bacteria survival on three inert supports (glass, polyvinyl chloride, and stainless steel). Two Pasteur Institute bacteria were selected: Enterococcus faecalis 10.30.15 and Pseudomonas fluorescens 56.90. We have observed that bacterial aerosol lethality increased proportionally with the relative humidity of the environment, the gram-negative rod appearing more fragile than the cocci. A significant difference in survival rate is measured dependent on the supports tested, the greatest lethality being observed on the PVCs.
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Affiliation(s)
- E Robine
- UFR Sciences, Applied Microbiology, University of Paris XII, Créteil, France.
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Bastard JP, Vidal H, Jardel C, Bruckert E, Robin D, Vallier P, Blondy P, Turpin G, Forest C, Hainque B. Subcutaneous adipose tissue expression of plasminogen activator inhibitor-1 gene during very low calorie diet in obese subjects. Int J Obes (Lond) 2000; 24:70-4. [PMID: 10702753 DOI: 10.1038/sj.ijo.0801087] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.0] [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: 11/08/2022]
Abstract
OBJECTIVE To determine whether changes in subcutaneous adipose tissue plasminogen activator inhibitor-1 (PAI-1) expression influence plasma PAI-1 level during weight loss in obese humans. DESIGN Study of the variations of PAI-1 levels both in plasma and in subcutaneous abdominal adipose tissue in 15 volunteer non-diabetic obese subjects, body mass index (BMI) 40.4.+/-1.9 kg/m2, aged 48+/-3 y, before and after a 3 week very low calorie diet (VLCD) programme (3.9+/-0.1 MJ/day). MEASUREMENTS Plasma and adipose tissue PAI-1 protein levels were measured by enzyme-linked immunosorbent assay and PAI-1 mRNA levels were quantified by quantitative RT-competitive PCR. RESULTS VLCD induced weight loss (5.8+/-0.8 kg) and decreased plasma PAI-1 concentration (-26% (P<0. 01)). Surprisingly, PAI-1 mRNA and protein abundance in subcutaneous adipose tissue increased by 87% (P<0.05) and by 44% (P<0.01), respectively. CONCLUSION These data indicate thus that changes in subcutaneous adipose tissue PAI-1 expression are not involved in the decrease of plasma PAI-1 levels during VLCD in obese subjects. International Journal of Obesity (2000)24, 70-74
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Affiliation(s)
- J P Bastard
- Service de Biochimie, Hôpital de la Salpêtrière, AP-HP, Paris.
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Bastard JP, Hainque B, Dusserre E, Bruckert E, Robin D, Vallier P, Perche S, Robin P, Turpin G, Jardel C, Laville M, Forest C, Vidal H. Peroxisome proliferator activated receptor-gamma, leptin and tumor necrosis factor-alpha mRNA expression during very low calorie diet in subcutaneous adipose tissue in obese women. Diabetes Metab Res Rev 1999; 15:92-8. [PMID: 10362456 DOI: 10.1002/(sici)1520-7560(199903/04)15:2<92::aid-dmrr21>3.0.co;2-4] [Citation(s) in RCA: 45] [Impact Index Per Article: 1.8] [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] [Indexed: 11/09/2022]
Abstract
BACKGROUND PPAR gamma, leptin and TNF alpha are three major factors that play a key role in influencing adipocyte differentiation and both adipose tissue function and metabolism. However, the regulation of these three genes during a dynamic period of weight loss is unknown. We therefore investigated the concomitant regulation of the mRNA expression of PPAR gamma, leptin and TNF alpha in adipose tissue during a 21-day very low calorie diet (VLCD) in 12 non-diabetic obese women. METHODS The mRNA levels of PPAR gamma, leptin and TNF alpha were quantified by quantitative RT-competitive PCR in abdominal subcutaneous adipose tissue before and during VLCD (940 kcal/day). RESULTS VLCD induced weight loss (approximately 6 kg) and improved insulin sensitivity. Simultaneously, VLCD induced the reduction in the adipose tissue mRNA abundances of PPAR gamma (-13%, p < 0.05) and of leptin (-58%, p < 0.005), whereas TNF alpha mRNA levels increased (+78%, p < 0.005). PPAR gamma and leptin mRNA levels were correlated before (r = 0.778, p < 0.01) and after VLCD (r = 0.797, p < 0.01). Serum HDL-cholesterol concentrations were positively associated with PPAR gamma (r = 0.696, p < 0.03) and leptin (r = 0.806, p < 0.01) mRNA levels. CONCLUSIONS The increase in TNF alpha mRNA levels suggested that a local increased expression of this cytokine in adipose tissue might play a role in the control of the fat mass during weight loss. PPAR gamma and leptin mRNA levels were positively associated both before and after VLCD, suggesting that common regulatory mechanism(s) might control their expression. More strikingly, we found strong positive correlations between circulating HDL-cholesterol and both PPAR gamma and leptin mRNA levels, suggesting the existence of physiological links between circulating lipoprotein metabolism and adipose tissue function.
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Affiliation(s)
- J P Bastard
- Service de Biochimie, Hôpital de la Salpêtrière, AP-HP, Paris, France
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Williams CP, Postic C, Robin D, Robin P, Parrinello J, Shelton K, Printz RL, Magnuson MA, Granner DK, Forest C, Chalkley R. Isolation and characterization of the mouse cytosolic phosphoenolpyruvate carboxykinase (GTP) gene: evidence for tissue-specific hypersensitive sites. Mol Cell Endocrinol 1999; 148:67-77. [PMID: 10221772 DOI: 10.1016/s0303-7207(98)00234-2] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Abstract
A 72 kilobase pair DNA fragment that contains the mouse phosphoenolpyruvate carboxykinase (PEPCK) gene locus, pck1, was isolated from a genomic bacterial artificial chromosome library. The region from approximately -5.5 to +6.6 kilobase pairs relative to the pck1 transcription start site was sequenced and exhibits a high degree of homology to the rat and human genes. Additionally, the chromatin structure of the PEPCK gene in mouse liver resembles that seen in rat. Backcross panel analysis of a microsatellite sequence confirms that the gene is located on chromosome 2. Hypersensitive site analysis was performed on nuclei isolated from the adipocyte cell line 3T3-F442A in the preadipose and adipose states. Several hypersensitive sites are present in the undifferentiated 3T3-F442A cells, before PEPCK mRNA is detected. The same sites are present after differentiation, however, the sensitivity of mHS 3 increases relative to the others. We conclude that the chromatin is open in 3T3-F442A cells and that factors are able to bind in the undifferentiated state but that something else is required for transcription.
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Affiliation(s)
- C P Williams
- Department of Biochemistry, Vanderbilt University School of Medicine, Nashville, TN 37232, USA
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Robin D. The roles of recent reaching history and looking behavior in intercepting a moving object. Infant Behav Dev 1998. [DOI: 10.1016/s0163-6383(98)91863-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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Glorian M, Franckhauser-Vogel S, Robin D, Robin P, Forest C. Glucocorticoids repress induction by thiazolidinediones, fibrates, and fatty acids of phosphoenolpyruvate carboxykinase gene expression in adipocytes. J Cell Biochem 1998; 68:298-308. [PMID: 9518257 DOI: 10.1002/(sici)1097-4644(19980301)68:3<298::aid-jcb2>3.0.co;2-p] [Citation(s) in RCA: 21] [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] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
Phosphoenolpyruvate carboxykinase (PEPCK) exerts a glyceroneogenic function in adipocytes in which transcription of its gene is increased by unsaturated fatty acids and fibrates. We used cultured rat adipose tissue fragments and 3T3-F442A adipocytes to show that the antidiabetic thiazolidinedione BRL 49653, a ligand and an activator of the gamma isoform of peroxisome proliferator activated receptors (PPARgamma), is a potent inducer of PEPCK mRNA. In 3T3-F442A adipocytes, the effect of BRL 49653 is rapid and concentration dependent, with a maximum reached at 1 microM and a half-maximum at 10-100 nM. PEPCK mRNA is similarly induced by the natural ligand of PPARgamma, the 15-deoxy-delta(12-14) prostaglandin J2. These observations strongly suggest that PPARgamma is a primary regulator of PEPCK gene expression in adipocytes. Dexamethasone at 10 nM repress induction of PEPCK mRNA by 1 microM BRL 49653, 0.32 mM oleate, or 1 mM clofibrate, in a cycloheximide-independent manner. The antiglucocorticoid RU 38486 prevents dexamethasone action, demonstrating involvement of the glucocorticoid receptor. Stable transfectants of 3T3-F442A adipocytes bearing -2100 to +69 base pairs of the PEPCK gene promoter fused to the chloramphenicol acetyltransferase (CAT) gene respond to 1 microM BRL 49653 or 1 mM clofibrate by a large increase in CAT activity, which is prevented by the simultaneous addition of 10 nM dexamethasone. Hence, in adipocytes, glucocorticoids act directly through the 5'-flanking region of the PEPCK gene to repress, in a dominant fashion, the stimulation of PEPCK gene transcription by thiazolidinediones and fibrates.
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Affiliation(s)
- M Glorian
- Centre de Recherche sur l'Endocrinologie Moléculaire et le Développement, C.N.R.S., Meudon, France
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Franckhauser-Vogel S, Antras-Ferry J, Robin D, Robin P, Forest C. Transcriptional and posttranscriptional mechanisms of glucocorticoid-mediated repression of phosphoenolpyruvate carboxykinase gene expression in adipocytes. J Cell Biochem 1997; 66:386-93. [PMID: 9257194 DOI: 10.1002/(sici)1097-4644(19970901)66:3<386::aid-jcb10>3.0.co;2-d] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Abstract
Glucocorticoids exert pleiotropic effects, among which negative regulation of transcription has been recognized as of crucial importance. While glucocorticoids induce phosphoenolpyruvate carboxykinase (PEPCK) gene expression in liver cells, it represses gene activity in adipose cells. We used the 3T3-F442A adipocytes to analyze the underlying mechanisms in these cells, the synthetic glucocorticoid dexamethasone exerts a dominant repression either on basal or on beta-agonist stimulation of PEPCK gene expression. To determine whether glucocorticoid action required protein synthesis, we employed cycloheximide, anisomycin, and puromycin, three different translation inhibitors. None of these affected induction by isoprenaline or repression by dexamethasone of isoprenaline stimulation. In contrast, dexamethasone inhibitory action on basal PEPCK mRNA was totally prevented by the three translation inhibitors. Time courses of glucocorticoid action on basal and on induction by beta-agonist were similar. Half-maximal effect of dexamethasone on isoprenaline-induced PEPCK mRNA was obtained at about 10 nM, a tenfold higher concentration than that observed for the reduction of basal mRNA. Using the transcription inhibitor DRB, we showed that dexamethasone did not alter mRNA half-life, while isoprenaline strongly stabilized mRNA. In a 3T3-F442A stable transfectant bearing -2,100 base pairs of the PEPCK promoter fused to the chloramphenicol acetyltransferase (CAT) gene, isoprenaline stimulated CAT activity, whereas dexamethasone reduced basal and isoprenaline-induced CAT expression. Hence, beta-agonists exert both transcriptional and posttranscriptional regulation, while glucocorticoid action is purely transcriptional. However, mechanisms of glucocorticoid repression of basal and of beta-agonist stimulation appear different.
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Affiliation(s)
- S Franckhauser-Vogel
- Centre de Recherche sur l'Endocrinologie Moléculaire et le Développement, Meudon, France
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Sapanet M, Robin D. [Post-traumatic temporomandibular pain dysfunction syndrome and the problems raised by its imputation]. Rev Stomatol Chir Maxillofac 1997; 98:159-63. [PMID: 9340726] [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] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Abstract
Direct, certain and total imputability of trauma as the cause of mandibular joint dysfunction is often difficult to establish. The theoretically obligatory conditions are rarely met, making the expert's opinion quite difficult to establish. The complexity of the pathophysiology involved in mandibular joint dysfunction confirms however the reality of this sequella. By determining the precise lesional or functional origin of the syndrome and the latent or patent nature of the prior status it is possible to ascertain intermediary situations.
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Forest C, Franckhauser S, Glorian M, Antras-Ferry J, Robin D, Robin P. Regulation of gene transcription by fatty acids, fibrates and prostaglandins: the phosphoenolpyruvate carboxykinase gene as a model. Prostaglandins Leukot Essent Fatty Acids 1997; 57:47-56. [PMID: 9250608 DOI: 10.1016/s0952-3278(97)90492-0] [Citation(s) in RCA: 26] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Affiliation(s)
- C Forest
- Centre de Recherche sur l'Endocrinologie Moléculaire et le Développement, C.N.R.S., Meudon, France
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Robin D. Intérêt de la caractérisation biochimique pour l'évaluation de la proportion de matière organique stable après décomposition dans le sol et la classification des produits organominéraux. ACTA ACUST UNITED AC 1997. [DOI: 10.1051/agro:19970303] [Citation(s) in RCA: 30] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022]
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Meur F, Augereau H, Kovess V, Robin D, Mezine S, Leman S. [Interobserver variation of the Global Assessment Scale. Study of 59 patients at admission to a general adult psychiatric unit]. Encephale 1996; 22:111-7. [PMID: 8706620] [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] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
Abstract
UNLABELLED In France, an analysis of the evaluation of psychiatric activity was done by a work group representing thirteen hospitals spread over the entire country. The group just recently published their final report in the form of an experimentation protocol for the description of psychiatric activity. The proposed methodology leads to some modifications of the existing data collection based on individual patient information sheets "fiche par patient", more particularly concerning new items such as the Global Assessment Scale (GAS or Axis V of DSM III-R): our first impression was that this new type of evaluation seemed to us somewhat subjective. We therefore decided to analyze the reliability of the score established by psychiatrists not familiar with its use. In the beginning the GAS score was evaluated in clinical cases (patients seen at their admission by two or three psychiatrists and scored afterwards independently), then in theoretical cases (34 cases types taken from the Health-Sickness Rating Scale of Luborsky) with the objective to improve the consensus between clinicians. RESULTS The clinical case studies made in an adult psychiatry pavilion permitted evaluating 59 patients at admission, of which 25 by three judges and respectively 40, 28 and 41 by pairs. The global accuracy of the score obtained with the clinical cases seems satisfactory for a discipline such as psychiatry (Kappa of Cohen's coefficient = 0.51, p < 0.001 for 25 patients by three judges--Kappa = 0.45, p < 0.001 for the 109 pairs of evaluations). The more detailed study of the classes obtained a satisfactory consensus for the scores below 40 and above 60 (K = 0.46 to 0.59) but not entirely satisfactory for the scores in the mid range of the scale between 40 and 60 (K = 0.22 to 0.29) which represents 39% of the patients in the study; this is improved by grouping into larger classes this part of the scale and it is therefore advisable to use it that way. For the 34 theoretical cases taken from the Luborsky HSRS evaluated independently by three judges the results obtained are clearly not as good (global Kappa = 0.29, p < 0.01). That is perhaps due to the fact that these "case types" don't use the descriptive patient models generally used in France. Keeping in mind that the mid range of the scale should be interpreted prudently, the GAS scale can nevertheless be credited with a certain global objectivity in the case of neutral study. Would it be the same if the GAS study could influence the allocation of resources? Taking into account all the clinical practices in mental health, the question of how all the data of this type evaluation could be recorded and updated should also examined.
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Affiliation(s)
- F Meur
- Secteur Laval-ouest, CHS Mayenne
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Antras-Ferry J, Robin P, Robin D, Forest C. Fatty acids and fibrates are potent inducers of transcription of the phosphenolpyruvate carboxykinase gene in adipocytes. Eur J Biochem 1995; 234:390-6. [PMID: 8536680 DOI: 10.1111/j.1432-1033.1995.390_b.x] [Citation(s) in RCA: 44] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
Abstract
Cytosolic phosphoenolpyruvate carboxykinase (PEPCK) plays a critical role in adipose tissue glyceroneogenesis. We have previously shown that transcription of the PEPCK gene was stimulated by isoprenaline and retinoic acid in 3T3-F442A adipocytes. We also showed that oleate increased PEPCK mRNA. Here, we analysed the effect that fatty acids of various chain lengths and unsaturation degrees exerted on PEPCK gene expression in 3T3-F442A adipocytes. When maintained in serum-free, glucose-free medium, differentiated cells responded to unsaturated long-chain fatty acids by a large increase in PEPCK mRNA whereas saturated fatty acids were inefficient. A maximum fivefold stimulation by oleate was attained at 4 h of treatment with 1 mM fatty acid bound to albumin in a 6:1 ratio. The poly-unsaturated very long-chain fatty acid all-cis-4,7,10,13,16,19-docosahexaenoic acid (C22:6) was even more potent and produced a tenfold increase. The expression of the genes encoding glycerol-3-phosphate dehydrogenase, hormone-sensitive lipase or actin remained unaffected by oleate exposure. A 4-h treatment by the hypolipidemic drug clofibrate, 0.5-2 mM, also produced a large (3-9-fold) increase in PEPCK mRNA. When used at non-saturating concentrations, oleate and clofibrate acted in an additive manner. At maximally effective concentrations, additivity was lost, suggesting that fatty acids and fibrates might act through similar mechanisms. Nuclear transcription experiments showed that oleate and clofibrate stimulated the transcription rate of the gene. 3T3-F442A cells were stably transfected with a plasmid containing the base pairs -2100 to +69 of the PEPCK gene promoter fused to the chloramphenicol acetyltransferase gene. These differentiated stable transfectants responded to oleate and clofibrate by a specific increase in chloramphenicol acetyltransferase activity. Adipocytes express various isoforms of peroxisome-proliferator-activated receptors that can be activated by fibrates and fatty acids. Potential recognition sequences for peroxisome-proliferator-activated receptors are present in the -2100 to +69 fragment of the PEPCK gene promoter. Thus, this gene represents an ideal molecular target for understanding the complex transcriptional control exerted by fatty acids and peroxisome proliferators.
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Affiliation(s)
- J Antras-Ferry
- Centre de Recherche sur l'Endocrinologie Moléculaire et le Développement, CNRS, Meudon, France
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Franckhauser S, Antras-Ferry J, Robin P, Robin D, Granner DK, Forest C. Expression of the phosphoenolpyruvate carboxykinase gene in 3T3-F442A adipose cells: opposite effects of dexamethasone and isoprenaline on transcription. Biochem J 1995; 305 ( Pt 1):65-71. [PMID: 7826355 PMCID: PMC1136430 DOI: 10.1042/bj3050065] [Citation(s) in RCA: 32] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
Abstract
The enzyme phosphoenolpyruvate carboxykinase (PEPCK) plays a key role in gluconeogenesis in liver and in glyceroneogenesis in adipose tissue. These processes, and PEPCK, are regulated by a number of hormones, some of which have different effects on the enzyme in liver and adipose tissue. To explore this phenomenon, PEPCK gene expression was studied in 3T3-F442A adipocytes maintained in a serum-free medium. The beta-adrenergic agonist isoprenaline (isoproterenol) and a cyclic AMP analogue (8-CPT-cAMP) increased PEPCK mRNA. A maximal 3-fold induction occurred in 2 h. Dexamethasone decreased PEPCK mRNA by 80% in 4 h. Dexamethasone also counteracted the inductive effects of isoprenaline and 8-CPT-cAMP. Run-on transcription experiments showed that the isoprenaline and dexamethasone actions were, at least in part, exerted at the level of PEPCK gene transcription. These effects were further analysed by using transient and stable transfection of adipocytes with a plasmid containing bp -2100 to 69 of the PEPCK gene promoter fused to the chloramphenicol acetyltransferase (CAT) gene. In such cells isoprenaline stimulated CAT expression, an effect that was prevented if the cells were also exposed to dexamethasone.
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Affiliation(s)
- S Franckhauser
- Centre de Recherche sur l'Endocrinologie Moléculaire et le Développement, CNRS, Meudon, France
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Abstract
In a certain number of cases, parents of infant and adolescent anorexics may exhibit complications of bereavement. Both infant and adolescent forms of anorexic symptoms constitute indeed two distinct pathologies. Sometimes, however, these two forms of anorexic symptoms share points in common, namely a psychopathological aspect. Making references to two clinical cases, the authors show that difficulties in the mourning process may in fact play a key role in the constitution of anorexic symptoms.
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