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1.
Aust Educ Res ; : 1-21, 2022 Nov 12.
Article in English | MEDLINE | ID: mdl-36407673

ABSTRACT

This study investigates common features of a set of diverse schools' responses to the initial school lockdown period during the pandemic in 2020, with a focus on practices supporting learning, inclusion and wellbeing. It comprises a collective case study of four Australian schools that were selected based on their reputation for impactful support of students and teachers during the emergency remote teaching period. Methods included interviews and focus groups with school leaders, teachers and students. The schools had widely differing contexts, technology access and student needs. Despite these varied contexts, the findings provided important insights into common practices supporting effective remote teaching. Emerging principles of effective practice illuminate ways forward to mitigate the significant risks accompanying emergency remote teaching, and guide practices in a variety of school contexts.

2.
J Public Health (Oxf) ; 43(4): 695-702, 2021 Dec 10.
Article in English | MEDLINE | ID: mdl-33693905

ABSTRACT

BACKGROUND: During the Covid-19 pandemic fake news has been circulating impacting on the general population's opinion about a vaccine against the SARS-CoV-2. Health literacy measures the capacity of navigating health information. METHODS: We used data from a prospective national online cohort of 1647 participants. Descriptive statistics, Chi2 and ANOVA independence tests and two multivariable multinomial regression models were performed. Interactions between each variable were tested. RESULTS: Detection of fake news and health literacy scores were associated with intention to get vaccinated against SARS-CoV-2 (p < 0.01). The risk of being "anti-vaccination" or "hesitant", rather than "pro-vaccination", was higher among individuals reporting bad detection of fake news, respectively OR = 1.93 (95%CI = [1.30;2.87]) and OR = 1.80 (95%CI = [1.29;2.52]). The risk of being in "hesitant", rather than "pro-vaccination" was higher among individuals having a bad health literacy score (OR = 1.44; 95%CI = [1.04;2.00]). No interaction was found between detection of fake news and health literacy. CONCLUSIONS: To promote acceptance of a vaccine against SARS-CoV-2, it is recommended to increase individuals' ability to detect fake news and health literacy through education and communication programs.


Subject(s)
COVID-19 , Health Literacy , COVID-19 Vaccines , Disinformation , Humans , Pandemics , Prospective Studies , SARS-CoV-2
3.
Rev Epidemiol Sante Publique ; 64(3): 185-94, 2016 Jun.
Article in English | MEDLINE | ID: mdl-27238163

ABSTRACT

BACKGROUND: The reimbursement of the hexavalent vaccine (Infanrix hexa™), comprising the DTPa-IPV-Hib components and the hepatitis B recombinant in a single vaccine, was approved in France in March of 2008. The impact of its reimbursement on physicians' decisions to vaccinate infants against hepatitis B was assessed in a study conducted with general practitioners and pediatricians. METHODS: The PRALINE study (NCT01777074) was a national, cross-sectional, repeated study with two measurement periods (T1 and T2) that measured the changes in physicians' acceptance of hepatitis B vaccination of infants before and for the 3 years after the approval of the hexavalent vaccine reimbursement. Two patient registers were created for each measurement period to enroll the first 15 12- to 15-month-old infants and the first 15 24- to 27-month-old children seen by the practitioners. The proportion of eligible children receiving a hepatitis B vaccine for each physician's practice was calculated. Practitioners also answered a vaccination practice questionnaire via telephone interviews. RESULTS: Across the two study periods, 418 general practitioners and 463 pediatricians were recruited and responded to the telephone interview on their vaccination practices. The overall number of children included in the study in both study periods reached almost 20,000. In the general practitioners group, there was a significant increase in the proportion of physicians "practicing hepatitis B vaccination" (i.e., at least 50% of eligible children receiving the initial hepatitis B vaccination) in children 24-27 months old (79% T2 versus 47% T1, P-value [P]<0.001). Similarly, the proportion of pediatricians initiating hepatitis B vaccination increased from 51% (T1) to 94% (T2) (P<0.0001). General practitioners offered hepatitis B vaccination to infants more systematically in the second study period (87% T2 versus 73% T1, P<0.001) and also suggested the use of the hexavalent vaccine to more patients after reimbursement (92% T2 versus 78% T1, P<0.0001). The proportion of pediatricians offering vaccination to every infant was high at T1 (94%) and remained steady (97%) with a high use of the hexavalent vaccine (94% T1 and 96% T2). CONCLUSION: The PRALINE study shows a significant and immediate change in the hepatitis B vaccination practices of general practitioners and pediatricians following hexavalent vaccine reimbursement with a significant increase in hepatitis B vaccine coverage in infants.


Subject(s)
Diphtheria-Tetanus-Pertussis Vaccine/economics , Haemophilus Vaccines/economics , Hepatitis B Vaccines/economics , Hepatitis B/prevention & control , Insurance, Health, Reimbursement/statistics & numerical data , Patient Acceptance of Health Care , Poliovirus Vaccine, Inactivated/economics , Public Health/economics , Child, Preschool , Cross-Sectional Studies , Diphtheria-Tetanus-Pertussis Vaccine/therapeutic use , Female , France/epidemiology , General Practice/economics , General Practice/statistics & numerical data , Haemophilus Vaccines/therapeutic use , Hepatitis B Vaccines/therapeutic use , Humans , Infant , Male , Patient Acceptance of Health Care/statistics & numerical data , Pediatrics/economics , Pediatrics/statistics & numerical data , Poliovirus Vaccine, Inactivated/therapeutic use , Vaccination/economics , Vaccination/statistics & numerical data , Vaccines, Combined/economics , Vaccines, Combined/therapeutic use
4.
J Mal Vasc ; 40(6): 365-75, 2015 Dec.
Article in French | MEDLINE | ID: mdl-26205797

ABSTRACT

OBJECTIVE: To evaluate the mean duration of treatment course with fondaparinux 2.5 mg (ARIXTRA(®)) in the setting of ambulatory general medicine, with respect to its indication in thromboprophylaxis for medically ill patients and to describe the population treated. METHODS: Observational, prospective, national, multicenter, pharmaco-epidemiological study, performed in France, at the request of the Transparency Commission (a division of the French Health Regulatory Authority). The general practitioners had to include the first three adult patients, considered as patients at high risk of venous thromboembolic events and immobilized for acute medical illness, treated with initiation of thromboprophylaxis by fondaparinux 2.5 mg. RESULTS: Two hundred and seventeen general practitioners included 840 patients. The mean age of patients was 63.6±18.1 years, and 63% of patients (n=520/831) were females. The real total administration duration of the treatment by fondaparinux 2.5 mg was known for 797 patients and was 15.8±12.4 days on average (range: 1-90 days, median: 10 days). In 40% of patients, the duration ranged from 6 to 14 days [duration consistent with the summary of product characteristics (SmPC)]. Among the 834 patients analyzed, 569 (68%) suffered from at least one acute illness and had at least one risk factor for venous thromboembolism (VTE). The indication did fully comply with the summary of product characteristics of fondaparinux 2.5 mg in 52% of the patients (n=434/834 patients). CONCLUSION: The results of the ArchiMed study support that the thromboprophylaxis treatment with fondaparinux 2.5 mg in ambulatory general medicine, and the associated medical conditions were usually consistent with the SmPC or guidelines. However, a difference was found for the duration and the initial indication, in situations that may be regarded as presenting a risk by the prescriber.


Subject(s)
Factor Xa Inhibitors/therapeutic use , General Practice , Polysaccharides/therapeutic use , Venous Thromboembolism/prevention & control , Adolescent , Adult , Aged , Aged, 80 and over , Back Pain/therapy , Bed Rest/adverse effects , Creatinine/blood , Factor Xa Inhibitors/administration & dosage , Female , Fondaparinux , Humans , Immobilization/adverse effects , Male , Middle Aged , Polysaccharides/administration & dosage , Practice Guidelines as Topic , Risk Factors , Surveys and Questionnaires , Thrombophilia/drug therapy , Thrombophilia/etiology , Time Factors , Treatment Outcome , Venous Thromboembolism/epidemiology , Venous Thromboembolism/etiology , Wounds and Injuries/therapy , Young Adult
5.
J Mal Vasc ; 40(4): 248-58, 2015 Jul.
Article in French | MEDLINE | ID: mdl-26051860

ABSTRACT

OBJECTIVE: To evaluate the average duration of in-hospital treatment with fondaparinux 2.5mg prescribed for venous thromboprophylaxis in acutely ill medical patients and to describe the treatment population. METHODS: Prospective, observational, national, multicentre, epidemiological study, performed in France at the request of the Transparency Commission of the French National Health Authority (Haute Autorité de Santé). This is part of a larger study program that also included a study with similar design in the general practice setting. The hospital practice part of the study was conducted by hospital pharmacists who were asked to include the first 15 adult subjects hospitalized in a non-surgical ward for whom fondaparinux 2.5mg was initiated for prophylaxis. RESULTS: Fifty-three pharmacists (49.5%) included a total of 718 patients. The average age was 71 ± 16 years (47%<75 years old); 54% were women. For 41% of patients, duration of fondaparinux 2.5mg administration ranged from 6 to 14 days. Eighty-five percent of patients had at least one acute illness related to the prescription of fondaparinux 2.5mg for thromboprophylaxis. Ten percent of the population had at least one risk factor listed on the Case Report Form. Characteristics of patients from the hospital practice study differ from those included in the general practice part of the ArchiMed Study program. CONCLUSION: The hospital practice part of the ArchiMed Study, which is similar to "audits of practices", shows that the real-life conditions of prescription of fondaparinux 2.5mg in patients hospitalized are generally in line with guidelines with respect to indication for thromboprophylaxis in acute medical illness.


Subject(s)
Anticoagulants/therapeutic use , Polysaccharides/therapeutic use , Thrombophilia/drug therapy , Venous Thromboembolism/prevention & control , Acute Disease , Adolescent , Adult , Aged , Aged, 80 and over , Anticoagulants/administration & dosage , Anticoagulants/adverse effects , Bed Rest , Body Mass Index , Creatinine/blood , Diagnosis-Related Groups , Drug Utilization , Female , Fondaparinux , France , Hemorrhage/chemically induced , Hemorrhage/epidemiology , Hospital Departments , Humans , Length of Stay/statistics & numerical data , Male , Middle Aged , Pharmacy Service, Hospital/statistics & numerical data , Polysaccharides/administration & dosage , Polysaccharides/adverse effects , Postoperative Complications/drug therapy , Postoperative Complications/prevention & control , Practice Guidelines as Topic , Prospective Studies , Risk Factors , Socioeconomic Factors , Thrombophilia/etiology , Young Adult
6.
Clin Microbiol Infect ; 14(11): 1079-83, 2008 Nov.
Article in English | MEDLINE | ID: mdl-19040480

ABSTRACT

Multi-colour flow cytometry was applied to determine T-cell-specific interferon-gamma, interleukin-2 and tumour necrosis factor-alpha expression in children with tuberculosis and non-tuberculosis mycobacterial lymphadenopathy (NTM-L). In vitro stimulation of peripheral blood mononuclear cells with purified protein derivative from Mycobacterium tuberculosis (tuberculin) and M. avium (sensitin) revealed differential recognition of tuberculin and sensitin in both study groups. Ratios of tuberculin-specific and sensitin-specific T-cell proportions in individual patients discriminated between children with tuberculosis or NTM-L. These findings have the potential to improve the differential diagnosis of mycobacterial infections.


Subject(s)
Antigens/immunology , Lymphatic Diseases/immunology , Mycobacterium Infections/immunology , T-Lymphocytes/immunology , Tuberculin/immunology , Tuberculosis, Lymph Node/immunology , Cells, Cultured , Child , Child, Preschool , Female , Flow Cytometry , Humans , Infant , Interferon-gamma/biosynthesis , Interleukin-2/biosynthesis , Leukocytes, Mononuclear/immunology , Male , Tumor Necrosis Factor-alpha/biosynthesis
7.
Rev Neurol (Paris) ; 160(10): 928-34, 2004 Oct.
Article in French | MEDLINE | ID: mdl-15492719

ABSTRACT

INTRODUCTION: A survey (NOEMIE, Nouvel Observatoire Epidemiologique de la Migraine en Entreprise) was carried out in France in 17 occupational healthcare units in order to identify subjects suffering from migraine headache with the aim of guiding them towards a healthcare program. The data collected in the participating units are presented. METHODS: and patients. NOEMIE was a national cross-sectional, observational, multicentric study with a 6-month follow-up. Two groups of migraine sufferers (according to IHS criteria) were included and divided into two groups: subjects already managed for their migraine (group A) and subjects who had not sought healthcare for migraine for more than 12 months (group B). The main objective was to evaluate changes in the quality-of-life score (QVM) 6 months later. RESULTS: At inclusion, the two groups were comparable for demographic features, history of migraine, and disease severity. A significant difference was observed between the two groups for frequency of attacks, disease management, and evaluation of treatment efficacy and of quality-of-life. At 6 months, patient satisfaction and quality-of-life were significantly improved (6 to 10 point improvement). For the 4753 reported attacks, 12.4 percent of the patients in group A required sick leave versus 10.9 percent in group B. Frequency of sick leave was considerably improved in both groups. CONCLUSION: By identifying subjects suffering from migraine headache who had not sought specific medical care and advising them to seek medical management, the employee healthcare units improved the subjects' quality-of-life, promoted adequate medical management and reduced occupational consequences of migraine headache.


Subject(s)
Migraine Disorders/epidemiology , Occupational Diseases/epidemiology , Occupational Health Services/statistics & numerical data , Adult , Cross-Sectional Studies , Data Collection , Female , France/epidemiology , Humans , Male , Middle Aged , Migraine Disorders/psychology , Migraine Disorders/therapy , Occupational Diseases/psychology , Occupational Diseases/therapy , Patient Satisfaction , Quality of Life , Sick Leave
8.
Encephale ; 29(3 Pt 1): 266-72, 2003.
Article in French | MEDLINE | ID: mdl-12876552

ABSTRACT

UNLABELLED: Alzheimer's disease (AD) is a major healthcare challenge due to the increasing longevity of the population. Clinically prominent neuropsychological and neurological impairments, together with behavioral disorders characterize Alzheimer's disease (AD). In the past, behavioural and emotional disturbances received less attention than cognitive symptoms in studies of dementia. The association between cognitive and behavioural symptoms is complicated by the fact that such association could also occur with different patterns during depressive episode without dementia. Because Alzheimer's disease (AD) tends to be under diagnosed, there is an increasing need for accurate neuropsychological screening tools that are easy to administer by psychiatrists. The aim of the present study was to validate, in French, a sensitive and specific screening battery (B2C) designed to improve the discrimination between patients with AD, patients with depression, and healthy elderly subjects. POPULATION AND METHOD: The B2C was administered to 123 ambulatory subjects (mean age 76.4 2.3 years): divided in three groups of subjects. AD subjects were included (n=49) with a Mini-Mental Status Examination (MMSE) score of between 18 and 26, and a confirmed diagnosis (DSM IV) of mild to moderate AD. Subjects were not included if they were receiving treatment with an acetylcholinesterase inhibitor. The depressive group comprised elderly subjects (n=27) with at least two DSM IV criteria for a major depressive episode including the depressive mood criterion and a score of more than 17 on the Montgomery-Asberg Depression Rating Scale (MADRS). The healthy control group (n=47) comprised age-matched subjects with no neurological or psychiatric pathology. The B2C consists of four individual tasks derived from classical neuropsychological tests. Tasks were presented in the following order: temporal orientation test (knowledge of month, date, year, day of the week and time of day), 5 word test (task is originally derived from the Enhanced Cued Recall test), clock drawing test (In this widely used test, the subject had to draw a clock with all the numbers and then draw the clock hands at twenty minutes to four), and the semantic verbal fluency test (the subject was asked to generate as many words as possible from a given category in a fixed time period of 60 seconds). During the pre-study investigator meeting, the test procedure was adapted to ensure uniformity of practice in all centres. The B2C was administered one week to one month after the study inclusion date by a psychologist blinded to the patient groups and who had not participated in the subject's inclusion. Multivariate analysis was performed using a forced model of all four tests. Due to the nature of the dependent variable (AD vs controls and depressive vs control), the chosen discrimination model was a binary logistical regression model. Explanatory variables were limited to the variables of the test battery, and the dependent variable was the subject's status (AD, depressive or control). RESULTS: The mean results for each test are presented in Table II. The time taken to perform the tests was significantly higher (p=0.0001) for the AD group (11.2 minutes) when compared with both the control (7.6 minutes) and depressive group (8.2 minutes). In each of the four subtests, the AD subjects were significantly more impaired than the two other groups. Multivariate analysis was performed using a forced model of all four tests which provided correct classification of a high percentage of subjects (88.5%). The analysis followed a normal distribution and demonstrated that the AD patients were significantly impaired in all four tests of the B2C compared with controls. Depressive, elderly subjects were only impaired in verbal fluency. Multivariate analysis showed that, compared with controls, patients with mild AD were significantly impaired for all four tests. Response operating characteristics (ROC) analysis of the B2C showed: 93.8% sensitivity and 85% specificity for discriminating AD from control patients (table III), and 63% sensitivity and 96% specificity for discriminating AD from depressive patients (table IV). DISCUSSION: The main objective of this study was to demonstrate that the Short Cognitive Evaluation Battery developed in the French language is able to discriminate between patients suffering from AD and healthy elderly subjects. The results clearly demonstrate that AD patients were significantly impaired in all four tests of the B2C compared with the control group. The present study also supports the use of the screening battery for discriminating between AD and depressive subjects. The SCEB was less discriminatory for AD versus depressive patients than for AD versus controls. This could be due to the limited size of the depressive group. The verbal fluency test was the most sensitive for discriminating between AD and depression but this was at the expense of specificity. Other brief screening tests have already been developed in English speaking countries, In French language, the B2C appears to be a highly sensitive and specific tool for discriminating between patients with mild AD and healthy elderly individuals. Furthermore, in combination with clinical evaluation, the B2C could improve the specificity of the difficult discrimination between mild AD and depression. The next step of the validation process will include concurrent validity study and inclusion of a higher number of subjects with depressive symptoms.


Subject(s)
Alzheimer Disease/diagnosis , Cognition Disorders/diagnosis , Depressive Disorder, Major/diagnosis , Surveys and Questionnaires , Aged , Diagnostic and Statistical Manual of Mental Disorders , Female , Humans , Male , Neuropsychological Tests , Perceptual Disorders/diagnosis , Severity of Illness Index , Time Perception/physiology , Verbal Behavior
9.
Mol Psychiatry ; 8(5): 536-45, 2003 May.
Article in English | MEDLINE | ID: mdl-12808433

ABSTRACT

Associations have been reported of the 7-repeat (7R) allele of the human dopamine receptor D4 (DRD4) gene with both the personality trait of novelty seeking and attention-deficit/hyperactivity disorder (ADHD). The increased prevalence of the 7R allele in ADHD probands is consistent with the common variant-common disorder hypothesis, which proposes that the high frequency of many complex genetic disorders is related to common DNA variants. Recently, based on the unusual DNA sequence organization and strong linkage disequilibrium surrounding the DRD4 7R allele, we proposed that this allele originated as a rare mutational event, which nevertheless increased to high prevalence in human populations by positive selection. We have now determined, by DNA resequencing of 250 DRD4 alleles obtained from 132 ADHD probands, that most ADHD 7R alleles are of the conserved haplotype found in our previous 600 allele worldwide DNA sample. Interestingly, however, half of the 24 haplotypes uncovered in ADHD probands were novel (not one of the 56 haplotypes found in our prior population studies). Over 10 percent of the ADHD probands had these novel haplotypes, most of which were 7R allele derived. The probability that this high incidence of novel alleles occurred by chance in our ADHD sample is much less than 0.0001. These results suggest that allelic heterogeneity at the DRD4 locus may also contribute to the observed association with ADHD.


Subject(s)
Attention Deficit Disorder with Hyperactivity/epidemiology , Attention Deficit Disorder with Hyperactivity/genetics , Receptors, Dopamine D2/genetics , Amino Acid Sequence , Base Sequence , Child , Genetic Heterogeneity , Genetic Predisposition to Disease/epidemiology , Haplotypes , Humans , Molecular Sequence Data , Phenotype , Prevalence , Receptors, Dopamine D4
10.
Eur Psychiatry ; 16 Suppl 1: 35s-41s, 2001 Jan.
Article in English | MEDLINE | ID: mdl-11520477

ABSTRACT

The quality of human cognitive performance appears today as one of the main components of quality of life, whatever the age. Ageing by itself and most of the diseases affecting the central nervous system alter higher brain functions such as memory, vigilance and attention. Dementia is the most acute example, with a cascade of behavioral and psychological consequences (BPSD), which are the main cause of the caregiver's burden and need specific pharmacotherapy. In this respect, the problem will be the choice of the best drug in situations such as wandering, agitation, violence, and screaming. The psychotropics, however, should not deteriorate the already disturbed cognition of the patients. This is the reason why we propose to establish for each drug, and notably for the antipsychotics, a precise and exact "cognitive mapping"; in other words, to measure the effects of drugs on the different components of cognition. The results of such studies will be predictive of the future phase III clinical trials and therapeutic responses. As an illustration of this approach we shall relate two studies, TIATEM (phase I) and TIAGE (phase III/IV), leading to the determination of a good cognitive safety profile of an atypical neuroleptic drug, tiapride.


Subject(s)
Alzheimer Disease/complications , Cognition Disorders/complications , Cognition Disorders/drug therapy , Cognition/drug effects , Psychotropic Drugs/pharmacology , Psychotropic Drugs/therapeutic use , Clinical Trials as Topic , Humans , Memory/drug effects , Quality of Life
11.
Presse Med ; 30(21): 1065-70, 2001.
Article in French | MEDLINE | ID: mdl-11471282

ABSTRACT

Internet and Intranet are omnipresent in the University world. We developed an easy-access website (www.med.univ-rennes1.fr/etud/pharmaco) devoted to teaching pharmacology and report here our experience after 4 years of use. Our objective was to determine the value of this new teaching tool in the medical coursus. The site is entirely free and presents approximately 50 topics and diaporamas discussing various themes: the cell, the receptor, general pharmacology, clinical research, population research, drug classes, etc. Harbored by the Medical Informatics Laboratory of the University of Rennes Medical School, this site serves as a reference for medical students and others. More than 100 visits are recorded daily, approximately half from visitors outside France. The advantages of this new teaching tool, which operates within the framework of a Virtual Medical University project, are evident for students and professors alike. Its impact on the quality of drug therapy by future doctors remains to be determined.


Subject(s)
Education, Medical, Continuing , Internet , Pharmacology/education , Curriculum , France , Humans , Information Services
12.
Mol Cell Biol ; 21(8): 2933-43, 2001 Apr.
Article in English | MEDLINE | ID: mdl-11283270

ABSTRACT

Addition of serum to mitogen-starved cells activates the cellular immediate-early gene (IEG) response. Serum response factor (SRF) contributes to such mitogen-stimulated transcriptional induction of many IEGs during the G0-G1 cell cycle transition. SRF is also believed to be essential for cell cycle progression, as impairment of SRF activity by specific antisera or antisense RNA has previously been shown to block mammalian cell proliferation. In contrast, Srf(-/-) mouse embryos grow and develop up to E6.0. Using the embryonic stem (ES) cell system, we demonstrate here that wild-type ES cells do not undergo complete cell cycle arrest upon serum withdrawal but that they can mount an efficient IEG response. This IEG response, however, is severely impaired in Srf(-/-) ES cells, providing the first genetic proof that IEG activation is dependent upon SRF. Also, Srf(-/-) ES cells display altered cellular morphology, reduced cortical actin expression, and an impaired plating efficiency on gelatin. Yet, despite these defects, the proliferation rates of Srf(-/-) ES cells are not substantially altered, demonstrating that SRF function is not required for ES cell cycle progression.


Subject(s)
DNA-Binding Proteins/metabolism , Genes, Immediate-Early , Immediate-Early Proteins , Nuclear Proteins/metabolism , Animals , Base Sequence , Cell Cycle , Colony-Forming Units Assay , DNA Primers/genetics , DNA-Binding Proteins/genetics , Early Growth Response Protein 1 , Embryo, Mammalian/cytology , Embryo, Mammalian/metabolism , Embryonic and Fetal Development/genetics , Genes, fos , Mice , Mice, Knockout , Microscopy, Electron, Scanning , Nuclear Proteins/genetics , Serum Response Factor , Signal Transduction , Stem Cells/cytology , Stem Cells/metabolism , Transcription Factors/genetics
13.
J Am Acad Child Adolesc Psychiatry ; 39(12): 1537-42, 2000 Dec.
Article in English | MEDLINE | ID: mdl-11128331

ABSTRACT

OBJECTIVE: There is considerable evidence supporting a genetic component in the etiology of attention-deficit/hyperactivity disorder (ADHD). Because stimulant medications act primarily on the dopaminergic system, dopamine system genes are prime candidates for genetic susceptibility factors for ADHD. Previous studies by several groups have observed a significant association of ADHD and an allele with 7 copies of the 48 base pair repeat in the third exon of the dopamine D4 receptor. METHOD: The authors sought to replicate these previous findings by collecting an independent sample of families from Toronto, Ontario, Canada, and confirming this finding in an expanded sample of ADHD families collected from Irvine, California. Using the transmission disequilibrium test (TDT), the authors tested for biased transmission of the 7-repeat allele at the exon III polymorphism of the dopamine D4 receptor locus in these samples of ADHD subjects. RESULTS: Biased transmission of the 7-repeat allele from parents to ADHD probands and their affected siblings was observed in the 2 new samples of families collected in Toronto and Irvine (TDT chi2 = 2.711, 1 df, one-sided p value = .050) and for these samples combined with the 52 families previously reported from Irvine (TDT chi2 = 6.426, 1 df, one-sided p value = .006). CONCLUSIONS: The results of this study further support the possibility of a role of the dopamine D4 receptor locus in ADHD.


Subject(s)
Attention Deficit Disorder with Hyperactivity/genetics , Genetic Linkage , Receptors, Dopamine D2/genetics , Adolescent , Attention Deficit Disorder with Hyperactivity/epidemiology , California/epidemiology , Child , Genetic Predisposition to Disease , Humans , Ontario/epidemiology , Polymorphism, Genetic , Receptors, Dopamine D4 , Risk
15.
Presse Med ; 29(32): 1768-72, 2000 Oct 28.
Article in French | MEDLINE | ID: mdl-11098277

ABSTRACT

Clinical research must be considered as a main and compulsory medical activity which has to be promoted on a European level. Some difficulties appear to be specific to mental diseases and may represent obstacles or a reason not to participate in clinical research. In fact, financing, grants, organizations and research centers do exist and should push forward clinical research in psychiatry. Human and cultural factors may explain why so few breakthroughs have occurred in France in the considered field. Incentive politics as well as avoidance of technical and frequently definitive errors must be proned and issue from a deep analysis of how leading teams are organized and operate.


Subject(s)
Physician Executives , Psychiatry , Research , Ethics, Medical , France , Humans , Research Support as Topic
16.
Pathol Biol (Paris) ; 48(7): 613-8, 2000 Sep.
Article in French | MEDLINE | ID: mdl-11072639

ABSTRACT

Although the neurobiological causative factors are now beginning to be understood, to a large extent the complex mechanisms involved in migraine remain an enigma, with the appearance of a transient unilateral cephalic pain, possibly preceded by a protean aura and associated with several other symptoms. The factors involved include three clinical signs or symptoms, i.e., pain, the aura (focalized neurological and neurosensory signs), and accompanying symptoms (e.g., sensory, psychological, or digestive); and three anatomical sites, i.e., the brain, the meningeal or intracranial vessel and a peripheral cranial nerve, the trigeminus (V). Familial hemiplegic migraine (FHM) has led to a consideration of the genetic origin of ionic channel-dependent pathologies (channelopathies), while certain other arguments which are for the most part indirect favor the hypothesis of abnormalities, again possibly of genetic origin, in the central neurotransmitters (including serotonin), which are involved in the transmission of pain messages and in vasomotor control. However, the main point is that each of the sites involved has its specific pharmacopoeia, which can contribute towards the treatment of migraine.


Subject(s)
Migraine Disorders/physiopathology , Serotonin Receptor Agonists/therapeutic use , Humans , Ion Channels/genetics , Migraine Disorders/drug therapy , Migraine Disorders/genetics , Receptors, Serotonin/drug effects , Receptors, Serotonin/physiology , Serotonin Receptor Agonists/pharmacology
17.
Psychopharmacology (Berl) ; 148(4): 361-6, 2000 Mar.
Article in English | MEDLINE | ID: mdl-10928308

ABSTRACT

OBJECTIVE: The aim of the present study was to compare the efficacy and safety of tiapride versus haloperidol and placebo in the treatment of agitation and aggressiveness in elderly patients with mild or moderate mental impairment. METHOD: This international, multicentre, randomized, double blind, three parallel groups study compared efficacy and safety of a 21 -day regimen of tiapride 100-300 mg/day versus haloperidol 2-6 mg/day and placebo in 306 elderly patients with mild or moderate dementia according to DSM III R and behavioural troubles with the Multidimensional Observation Scale for the Elderly Subjects (MOSES) irritability/aggressiveness subscore ranging from 16 to 30. RESULTS: The percentage of responders (defined as patients with at least a 25% MOSES irritability/aggressiveness subscore decrease between the inclusion and the end of the treatment) was significantly greater in the tiapride (63%, P=0.04) and haloperidol (69%, P=0.004) groups than in the placebo group (49%), with no significant difference between the active drugs. Similar results were observed for the mean MOSES irritability/aggressiveness subscores on D7, D21 and at D(end) which were significantly smaller in the tiapride and haloperidol groups than in the placebo group. The decrease between D0 and D(end) was significantly greater in the tiapride (6.57, P=0.009) and haloperidol groups (6.75, P=0.005) than in the placebo group (4.71). The global improvement CGI was significantly better in the tiapride and haloperidol groups than in the placebo group (P=0.03 and P=0.02). No significant difference was observed between the two active drugs or among the three treatment groups for the Folstein's Mini Mental Status scale (MMS) total score, and there was no notable change during treatment. The number of patients with adverse events, assessed on the Udvalg Kliniske Undersogelser scale (UKU), and the number of UKU symptoms were smaller in the tiapride group (62 patients, 61%, 212 events) than in the haloperidol group (77 patients, 76%, 305 events) and identical to that observed in the placebo group (69 patients, 67%, 234 events). Of interest, the number of patients with at least one extrapyramidal symptom was significantly lower (P=0.003) in the tiapride group (16 patients, 16%) than in the haloperidol group (34 patients, 34%) and similar to that of the placebo group (18 patients, 17%); the difference observed between the haloperidol and placebo groups was significant (P=0.008). CONCLUSION: Tiapride is not different from haloperidol in the treatment of agitation and aggressiveness in elderly patients and better tolerated, in particular with significantly fewer extrapyramidal symptoms.


Subject(s)
Aggression/drug effects , Antipsychotic Agents/therapeutic use , Cognition Disorders/drug therapy , Haloperidol/therapeutic use , Psychomotor Agitation/drug therapy , Tiapamil Hydrochloride/therapeutic use , Aged , Aged, 80 and over , Aggression/psychology , Antipsychotic Agents/adverse effects , Cognition Disorders/psychology , Double-Blind Method , Female , Haloperidol/adverse effects , Humans , Male , Middle Aged , Psychiatric Status Rating Scales , Psychomotor Agitation/psychology , Tiapamil Hydrochloride/adverse effects
18.
Rev Neurol (Paris) ; 156 Suppl 2 Pt 2: 63-9, 2000.
Article in French | MEDLINE | ID: mdl-10916038

ABSTRACT

Rating scales and questionnaires used as measurement tools in Parkinson's disease are carefully constructed with well-defined items. The validity of a scale is its capacity to provide the intended measurement. One can distinguish perceived, content, and criteria-based validity as well as construction and sensitivity to change validity. The reliability of a scale is the capacity of a scale to produce statistically equivalent data in comparable situations. Reliability is composed of the following qualities: interobserver reliability, test-retest reliability, and internal coherence. UPDRES, mood scales (Hamilton, MADRS, CES-D, BDI), scales assessing cognitive disorders (MATTIS, MMSE), and quality of life questionnaires designed specifically for Parkinson's disease (PDQL, PDA-39, PDq-8) or for the general population (SF-36, SIP, NHP) are used in routine practice, and are particularly useful for clinical research. The metrological properties of these scales are analyzed here.


Subject(s)
Parkinson Disease/diagnosis , Humans , Neuropsychological Tests , Parkinson Disease/psychology , Quality of Life , Surveys and Questionnaires
19.
Presse Med ; 29(21): 1197-201, 2000 Jun 17.
Article in French | MEDLINE | ID: mdl-10906945

ABSTRACT

UNLABELLED: SOCIAL AND ECONOMICAL IMPACT: Alzheimer's disease is a neurodegenerative dementia raising major public health concern in industrialized countries. The consequences are not only medical but also social and economical. PERSPECTIVES: It is thus important to establish diagnostic principles, therapeutic goals, and global strategies guiding the behavior of physicians, family and patients faced with this dreaded disease. Currently, only a few rare symptomatic treatments are available, but research in this field points to potentially effective preventive and etiopathogentic therapeutic protocols associating drugs, social support, and psychotherapy.


Subject(s)
Alzheimer Disease/therapy , Psychotherapy , Social Support , Alzheimer Disease/psychology , Caregivers , Drug Therapy , Family Health , Humans
20.
Eur Neurol ; 44(1): 22-30, 2000.
Article in English | MEDLINE | ID: mdl-10894991

ABSTRACT

The value of an early initial coadministration of levodopa (L-dopa) and lisuride in Parkinson's disease was the main goal of the present study. Eighty-two patients with recently diagnosed idiopathic Parkinson's disease were randomized into two groups for treatment with L-dopa alone or L-dopa + lisuride. The trial was double-blinded for the first year and open for the following 4 years. Selegiline (10 mg/day b.i.d.) was added in both groups at the end of the first year. Outcome measures were evolution of L-dopa dosage and Unified Parkinson's Disease Rating Scale scores and subscores, and incidence of motor complications. The dropout rate was higher in the L-dopa group (63.4%) than in the combination group. Motor improvement was better (p < 0.01) in the L-dopa + lisuride group. Expected motor complications were rare, moderate and equivalent in the two groups despite a difference in L-dopa dosage (446.7 vs. 387.5 mg/day). Long-term follow-up demonstrated the L-dopa-sparing effect of lisuride (average 1 mg/day), the beneficial effect of early combination therapy on motor status and the paucity of motor complications in both groups.


Subject(s)
Antiparkinson Agents/administration & dosage , Levodopa/administration & dosage , Lisuride/administration & dosage , Parkinson Disease/drug therapy , Adult , Aged , Antiparkinson Agents/adverse effects , Disease Progression , Double-Blind Method , Drug Therapy, Combination , Female , Follow-Up Studies , Humans , Levodopa/adverse effects , Lisuride/adverse effects , Male , Middle Aged , Neurologic Examination/drug effects , Parkinson Disease/diagnosis
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