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1.
Gynecol Endocrinol ; 27(10): 849-56, 2011 Oct.
Artigo em Inglês | MEDLINE | ID: mdl-21142776

RESUMO

OBJECTIVE: To investigate compliance, satisfaction, and preference in women using a transdermal contraceptive patch. METHODS: Women (18-46 years) from eight European countries used contraceptive patches (norelgestromin 6 mg, ethinylestradiol 600 µg) for six, 4-week treatment cycles. Compliance, satisfaction, and preference were assessed after 3 and 6 cycles and study completion using self-report methods. RESULTS: Of the 778 participants, 36.8% (n = 287) used no contraception at baseline. The most common methods were oral contraceptives (67.9%, n = 334) and barrier methods (21.5%, n = 106). Of oral contraception users, 63.5% (n = 212) were satisfied or very satisfied with their previous method, but compliance was poor with 77.8% (n = 260) reporting missed doses. After 3 and 6 cycles, >80% of all included women were satisfied or very satisfied with the patch. At study completion, most participants (73.7%) reported a preference for the patch compared to their previous method. Of 4107 cycles, 3718 (90.5%) were completed with perfect compliance. Two pregnancies occurred during this study, representing a Pearl Index of 0.63. No new safety issues were identified and the patch was well tolerated. CONCLUSION: Women were highly satisfied with transdermal contraception and preferred this form of family planning over their previous method. Transdermal contraception represents a valuable addition to contraceptive options with potential to offer high compliance and efficacy.


Assuntos
Comportamento Contraceptivo/psicologia , Anticoncepcionais Femininos/efeitos adversos , Etinilestradiol/efeitos adversos , Norgestrel/análogos & derivados , Satisfação do Paciente , Adesivo Transdérmico , Adolescente , Adulto , Anticoncepcionais Femininos/administração & dosagem , Anticoncepcionais Femininos/farmacologia , Combinação de Medicamentos , Etinilestradiol/administração & dosagem , Etinilestradiol/farmacologia , Europa (Continente) , Feminino , Humanos , Pessoa de Meia-Idade , Norgestrel/administração & dosagem , Norgestrel/efeitos adversos , Norgestrel/farmacologia , Preferência do Paciente/psicologia , Gravidez , Taxa de Gravidez , Qualidade de Vida/psicologia , Autorrelato , Adesivo Transdérmico/efeitos adversos , Adulto Jovem
2.
Rev Neurol (Paris) ; 165(5): 449-59, 2009 May.
Artigo em Francês | MEDLINE | ID: mdl-19150101

RESUMO

INTRODUCTION: The term "autobiographical memory" (AuM) refers to contextually bound experiences that occurred in a specific time, place, and affective setting. AuM is a component of memory commonly impaired in amnestic disorders. Alteration occurs rarely in isolation but rather in the setting of a larger memory impairment. Isolated AuM deficit is a controversial clinical entity, however, recently reported in the context of temporal lobe epilepsy. This study aims at characterizing this poorly documented clinical syndrome and at discussing its potential pathophysiological basis. PATIENTS AND METHODS: We studied a group of three subjects with a history of pharmacosensitive epilepsy and severe AuM complaints. They all were submitted to a neuropsychological evaluation that included an extensive episodic memory assessment, along with wake/sleep electroencephalogram (EEG) and brain magnetic resonance imaging (MRI). RESULTS: We observed the following findings: preserved autonomy and intact global cognitive functioning; normal performance to standardized episodic memory assessment, contrasting with decreased performance to specific AuM evaluation; frontal and/or temporal epileptic activity on EEG; and normal structural brain MRI. CONCLUSION: We reported on a group of patients exhibiting selective impairment of some components of personal memory, associated with interictal frontal and/or temporal abnormalities on EEG. To account for these findings, we hypothesise that interictal epileptic-related activity is impeding long-term consolidation or storage of autobiographical material.


Assuntos
Amnésia/psicologia , Encéfalo/patologia , Adulto , Afeto , Idoso , Amnésia/diagnóstico , Amnésia/patologia , Eletroencefalografia , Feminino , Humanos , Imageamento por Ressonância Magnética , Masculino , Pessoa de Meia-Idade , Autonomia Pessoal , Inteligibilidade da Fala
3.
Rev Neurol (Paris) ; 165(6-7): 549-59, 2009.
Artigo em Francês | MEDLINE | ID: mdl-19150098

RESUMO

INTRODUCTION: Pure progressive amnesia, a form of progressive focal cortical atrophy is thought to represent the early stages of a rare form of Alzheimer's disease (AD). This syndrome is characterized by the insidious and slowly progressive breakdown of memory, in the absence of a significant impairment in other cognitive domains or in the realm of behavior. The aims of the present study were to contribute to the characterization of this poorly documented type of amnesia, to compare it with other forms of amnestic syndromes resulting from lesions to the medial temporal lobes and to discuss its potential pathophysiological basis. PATIENTS AND METHOD: We carried out three single case studies in patients presenting with pure progressive amnesia. They all underwent a neuropsychological evaluation that included an extensive assessment of spatial and recognition memory, along with brain magnetic resonance imaging and a cerebral blood flow study. RESULTS: All three patients had a severe deficit in the storage of context-free information, along with a severe visual recognition memory impairment, as previously reported in a case study on a patient with pure progressive amnesia (Cognitive Neuropsychology 23 (2006) 1230-1247). Yet, spatial memory remained well preserved, and patients maintained totally independent in everyday life. In addition, a significant atrophy of the medial temporal structures was found. DISCUSSION: This specific pattern of impairment differs from other types of amnestic syndromes after medial temporal damage and raises the question of lesional topography, as well as possible compensatory phenomena. We suggest that pure progressive amnesia results from selective damage to the ventral subhippocampal route into the hippocampal formation leading to impaired context-free memory. Spatial memory may remain intact because the dorsal parahippocampal route into the hippocampus remains functional. Pure progressive amnesia may contribute to a better understanding of the neural systems involved in declarative memory and provide a better understanding into the nature of the memory impairment that characterizes the initial stages of AD.


Assuntos
Atividades Cotidianas , Amnésia/psicologia , Idoso , Idoso de 80 Anos ou mais , Amnésia/patologia , Encéfalo/patologia , Progressão da Doença , Feminino , Humanos , Imageamento por Ressonância Magnética , Masculino , Memória/fisiologia , Pessoa de Meia-Idade , Testes Neuropsicológicos , Desempenho Psicomotor/fisiologia
4.
J Nutr Health Aging ; 23(9): 805-812, 2019.
Artigo em Inglês | MEDLINE | ID: mdl-31641729

RESUMO

Low docosahexaenoic acid (DHA) and eicosapentaenoic acid (EPA) concentration has been associated with the development of some psychiatric disorders. OBJECTIVES: to assess the association between red blood cell (RBC) DHA-EPA concentration and psychotropic drug use in older adults and between the 1-year change in RBC DHA-EPA and psychotropic drug use at 12 months. DESIGN: secondary analysis of multicenter, randomized controlled trial testing multidomain intervention and/or n-3 PUFA supplement on cognitive function (MAPT study). SETTING: France, 2008-2014. PARTICIPANTS: 1680 participants ≥70 years, community-dwelling were included. MEASUREMENTS: Psychotropic drug use was self-reported during medical interviews and assessments. RBC n-3 PUFA concentration was defined by % of docosahexaenoic acid (DHA) and eicosapentaenoic acid (EPA) among total fatty acids. Logistic regressions models controlling for age, sex, education, depression risk and intervention group were used. RESULTS: 1594 participants had baseline DHA-EPA concentration available (mean age=75.5±4.5 years, 65% females). At baseline, participants with DHA-EPA ≤4.82% (lowest quartile) reported higher prevalence of use of overall psychotropic drugs (34.0% vs 24.4%; aOR=1.33, 95%CI=[1.03-1.72]), anxiolytic/hypnotic drugs (25.0% vs 18.2%; aOR=1.42, 95%CI=[1.07-1.89]), and antidepressants (18.3% vs 13.5%; aOR=1.25, 95%CI=[0.93-1.72]) than participants with higher DHA-EPA. Participants who experienced an increase in DHA-EPA from baseline were less likely to use a psychotropic drug at 12 months than participants with no change or a decrease (aOR=0.72, 95%CI=[0.55-0.96]). CONCLUSION: Low RBC DHA-EPA concentration was independently associated with psychotropic drug use. Future studies are needed to assess whether low RBC DHA-EPA is a risk marker for psychotropic drug use in older adults and to better understand underlying pathophysiological mechanisms. Registration number: ClinicalTrials.gov database (NCT00672685).


Assuntos
Cognição/efeitos dos fármacos , Ácidos Docosa-Hexaenoicos/sangue , Ácido Eicosapentaenoico/sangue , Eritrócitos/química , Psicotrópicos/farmacologia , Idoso , Idoso de 80 Anos ou mais , Cognição/fisiologia , Depressão , Transtorno Depressivo , Suplementos Nutricionais , Eritrócitos/fisiologia , Ácidos Graxos Ômega-3/sangue , Feminino , França , Humanos , Masculino
5.
Neuropsychologia ; 46(4): 1009-19, 2008 Mar 07.
Artigo em Inglês | MEDLINE | ID: mdl-18191160

RESUMO

The present study assessed the patterns of cortical gray matter (GM) loss in patients with amnestic mild cognitive impairment (aMCI) with distinct profiles of memory impairment, i.e. aMCI patients failing on both recall and recognition memory vs. aMCI patients showing impaired recall but preserved recognition memory. This distinction is usually not taken into account in studies on aMCI and the aim of the present study was to assess whether this distinction is useful. Twenty-eight aMCI patients and 28 matched controls subjects were included. All aMCI patients failed a recall memory task (inclusion criteria). All underwent a visual recognition memory task (DMS48). However, 12 succeeded on this task while 16 failed. Relative gray matter (GM) loss was measured using voxel-based morphometry. When comparing aMCI patients to controls regardless of the profile of memory impairment, GM loss was found in temporal, parietal and frontal areas. However, in aMCI patients with preserved recognition (but impaired recall), GM loss was confined to frontal areas. This contrasted with GM loss in the right medial temporal lobe and bilateral temporo-parietal regions in aMCI patients with impaired recall and recognition memory, a pattern of GM loss usually described in early AD. We conclude that different profiles of memory impairment in aMCI patients are associated with distinct patterns of GM loss.


Assuntos
Transtornos Cognitivos/complicações , Transtornos Cognitivos/patologia , Transtornos da Memória/etiologia , Neuroglia/patologia , Reconhecimento Visual de Modelos/fisiologia , Idoso , Mapeamento Encefálico , Feminino , Humanos , Imageamento por Ressonância Magnética/métodos , Masculino , Pessoa de Meia-Idade , Testes Neuropsicológicos
6.
J Neurol Neurosurg Psychiatry ; 79(9): 979-84, 2008 Sep.
Artigo em Inglês | MEDLINE | ID: mdl-18450788

RESUMO

OBJECTIVE: To examine risk factors for mild cognitive impairment (MCI) and progression to dementia in a prospective community-based study of subjects aged 65 years and over. METHODS: 6892 participants who were over 65 and without dementia were recruited from a population-based cohort in three French cities. Cognitive performance, clinical diagnosis of dementia, and clinical and environmental risk factors were evaluated at baseline and 2-year and 4-year follow-ups. RESULTS: 42% of the population were classified as having MCI at baseline. After adjustment for confounding with logistic regression models, men and women classified as having MCI were more likely to have depressive symptomatology and to be taking anticholinergic drugs. Men were also more likely to have a higher body mass index, diabetes and stroke, whereas women were more likely to have poor subjective health, to be disabled, to be socially isolated, and to suffer from insomnia. The principal adjusted risk factors for men for progression from MCI to dementia in descending order were ApoE4 allele (OR = 3.2, 95% CI 1.7 to 5.7), stroke (OR = 2.8, 95% CI 1.2 to 6.9), low level of education (OR = 2.3, 95% CI 1.3 to 4.1), loss of Instrumental Activities of Daily Living (IADL) (OR = 2.2, 95% CI 1.1 to 4.5) and age (OR = 1.2, 95% CI 1.1 to 1.2). In women, progression is best predicted by IADL loss (OR = 3.5, 95% CI 2.1 to 5.9), ApoE4 allele (OR = 2.3, 95% CI 1.4 to 4.0), low level of education (OR = 2.2, 95% CI 1.3 to 3.6), subclinical depression (OR = 2.0, 95% CI 1.1 to 3.6), use of anticholinergic drugs (OR = 1.8, 95% CI 1.0 to 3.0) and age (OR = 1.1, 95% CI 1.1 to 1.2). CONCLUSIONS: Men and women have different risk profiles for both MCI and progression to dementia. Intervention programmes should focus principally on risk of stroke in men and depressive symptomatology and use of anticholinergic medication in women.


Assuntos
Transtornos Cognitivos/diagnóstico , Demência/diagnóstico , Transtornos Cognitivos/epidemiologia , Demência/epidemiologia , Progressão da Doença , Feminino , Humanos , Masculino , Testes Neuropsicológicos , Medição de Risco , Fatores Sexuais
7.
Behav Neurol ; 19(1-2): 13-8, 2008.
Artigo em Inglês | MEDLINE | ID: mdl-18413910

RESUMO

The term functional amnesia (FA) has been proposed for cases of memory impairment presenting with severe retrograde amnesia in the absence of cerebral injury or history of psychiatric disturbance. Emotional flattening has often been reported alongside FA, however the mechanism of such a modification is unknown. This study aimed to explore the emotional processing in a rare case of a patient with FA complaining of severe emotional flattening. We presented ecological dynamic video stimuli conveying strong peaceful and fearful emotions to the patient and 13 controls. We then explored their emotional responses considering both conscious emotional judgements and automatic psychophysiological responses (skin conductance) and facial muscular activity (corrugator supercilii). Both patient P.P. and controls perfectly recognized the emotions conveyed by the films. However, P.P. failed to show an increased skin conductance and corrugator activity as found in controls during fearful film extracts compared with peaceful extracts. Taken together, these finding demonstrate the presence of an emotional deficit, characterized by a failure to generate appropriate somatic responses to positive and negative stimuli. Although this altered somatic processing did not interfere with PP's explicit recognition of emotion, it modified his emotional experience, thereby constituting a possible explanation for his emotional flattening. This study therefore suggests that FA is not limited to a mnemonic impairment, but is a more complex disorder, involving also the processing of emotionally loaded experiences.


Assuntos
Afeto/fisiologia , Amnésia Retrógrada/complicações , Amnésia Retrógrada/fisiopatologia , Sistema Nervoso Autônomo/fisiopatologia , Distúrbios Somatossensoriais/complicações , Distúrbios Somatossensoriais/fisiopatologia , Adulto , Amnésia Retrógrada/diagnóstico , Músculos Faciais/fisiopatologia , Medo , Resposta Galvânica da Pele/fisiologia , Humanos , Masculino , Filmes Cinematográficos , Estimulação Luminosa , Índice de Gravidade de Doença , Distúrbios Somatossensoriais/diagnóstico
8.
J Dermatolog Treat ; 16(1): 31-6, 2005 Feb.
Artigo em Inglês | MEDLINE | ID: mdl-15897165

RESUMO

BACKGROUND: Scalp involvement in psoriatic patients represents a common issue. Treatment of the hairy skin requires adequate pharmaceutical formulations; hence, a new specific shampoo formulation of clobetasol propionate 0.05% was developed by Galderma R&D, Inc. METHODS: For this multicenter, randomized, investigator-masked, parallel group study, 151 subjects with moderate to severe scalp psoriasis were randomized to 4 weeks of treatment with clobetasol propionate shampoo or calcipotriol solution. RESULTS: Clobetasol propionate demonstrated significantly superior efficacy to calcipotriol solution (total severity score: mean difference 0.51, 95% CI 0.05-0.97, p = 0.028; global severity score: mean difference 0.43, 95% CI 0.08-0.78, p = 0.016). Adverse events were more common in the calcipotriol group than in the clobetasol propionate shampoo group. Telangiectasia and skin atrophy did not differ significantly between treatments; however, a burning sensation was significantly more common in the calcipotriol solution group. CONCLUSIONS: Short contact therapy of scalp psoriasis with this new shampoo formulation of clobetasol propionate was significantly more effective and better tolerated than calcipotriol solution for the treatment of scalp psoriasis.


Assuntos
Calcitriol/análogos & derivados , Calcitriol/uso terapêutico , Clobetasol/análogos & derivados , Clobetasol/uso terapêutico , Fármacos Dermatológicos/uso terapêutico , Psoríase/tratamento farmacológico , Dermatoses do Couro Cabeludo/tratamento farmacológico , Administração Tópica , Adulto , Feminino , Preparações para Cabelo , Humanos , Masculino , Pessoa de Meia-Idade , Índice de Gravidade de Doença , Soluções , Resultado do Tratamento
9.
J Clin Endocrinol Metab ; 80(11): 3262-6, 1995 Nov.
Artigo em Inglês | MEDLINE | ID: mdl-7593435

RESUMO

Treatment of acromegaly with intermittent sc injections of octreotide is associated with an increased incidence of cholelithiasis. We investigated the incidence of gallstone formation, the occurrence of gallbladder disease, and the response of gallstones to ursodeoxycholic acid in 30 acromegalic patients who were treated with a continuous sc infusion of octreotide at doses between 200 and 800 micrograms/day for 3-70 months. Of the 30 patients, 28 had pretretment ultrasonography of the biliary tree performed, and all had frequent follow-ups. Nine patients underwent pre- and posttreatment bile sampling. No patient treated for less than 6 months and 18.5% of patients treated for more than 6 months developed new gallstones. No patient developed symptomatic cholelithiasis while receiving octreotide therapy. Of six patients who developed gallstones, four were treated with ursodeoxycholic acid, which dissolved all gallstones. One patient with gallstones experienced an episode of biliary colic when octreotide was withdrawn; however, no cholecystitis was found at subsequent cholecystectomy. Bile sampling showed that 8 (75%) of the 12 patients who were assessed demonstrated microcrystals, whereas in 3 (50%) of 6 patients who were closely analyzed thereafter, microcrystals disappeared once octreotide therapy was stopped. Our results show that continuous sc infusion octreotide therapy increases the incidence of cholelithiasis over normal values, as is the case with intermittent sc injections. Although higher octreotide levels are sustained with continuous sc infusion, this is not associated with an increased risk of gallstone formation compared with intermittent sc octreotide therapy.


Assuntos
Acromegalia/tratamento farmacológico , Colelitíase/induzido quimicamente , Octreotida/efeitos adversos , Acromegalia/complicações , Adulto , Colelitíase/tratamento farmacológico , Feminino , Humanos , Injeções Subcutâneas , Masculino , Pessoa de Meia-Idade , Octreotida/administração & dosagem , Octreotida/uso terapêutico , Estudos Retrospectivos , Ácido Ursodesoxicólico/uso terapêutico
10.
Arch Neurol ; 50(10): 1077-82, 1993 Oct.
Artigo em Inglês | MEDLINE | ID: mdl-8215967

RESUMO

To investigate functional and anatomical features of callosal involvement in multiple sclerosis (MS), performances of 90 patients with definite MS and 25 matched normal control subjects were compared on three tasks exploring interhemispheric transfer of auditory, sensory, and motor information: a verbal dichotic listening task, a crossed tactile finger localization task, and an alternate finger tapping task. Each patient also underwent a magnetic resonance imaging (MRI) scan (1) to appreciate the extent of white-matter changes by a semiquantitative evaluation of hemispheric brain MRI hyperintensities and (2) to measure the degree of total and regional callosal atrophy using an automatized method of partition of the midsagittal callosal area. Interhemispheric transfer and/or integration was impaired in patients with MS for all modalities explored and proportional to both degree of callosal atrophy and diffusion of white-matter lesions. Moreover, in good agreement with data obtained from partial commissurotomy studies, performance on each functional task was predominantly associated with atrophy of one part of the callosum, namely left-ear dichotic suppression with the posterior callosal region, alternate finger tapping with the anterior region, and cross-localization with midanterior and posterior regions. Finally, a subgroup of patients without MRI white-matter hyperintensities also showed significant impairment of callosal function and relative atrophy of the callosum. These findings suggest the potential clinical value of callosal involvement in MS and the usefulness of MS as a model of interhemispheric disconnection.


Assuntos
Encefalopatias/patologia , Corpo Caloso/patologia , Imageamento por Ressonância Magnética , Esclerose Múltipla/patologia , Adolescente , Adulto , Atrofia , Mapeamento Encefálico , Testes com Listas de Dissílabos , Feminino , Dedos/fisiologia , Humanos , Masculino , Pessoa de Meia-Idade , Atividade Motora , Vias Neurais , Desempenho Psicomotor , Sensação
11.
Neurology ; 59(3): 408-13, 2002 Aug 13.
Artigo em Inglês | MEDLINE | ID: mdl-12177375

RESUMO

OBJECTIVE: To assess the frequency and disability caused by nonmotor fluctuations (NMF) in PD. METHODS: A structured questionnaire was administered to 50 patients with PD with motor fluctuations (MF), focused on 54 nonmotor symptoms classified in three subgroups: 26 dysautonomic, 21 cognitive and psychiatric, and seven pain/sensory NMF. The link between each NMF and the motor state was determined. Patients were asked to grade their disability from 0 (no disability) to 4 (maximum discomfort) and to specify which kind of fluctuation subgroup (motor or nonmotor) was the most incapacitating. A statistical analysis was performed to determine the frequency of each NMF and to determine whether the level of disability resulting from NMF could be correlated to the main characteristics of the population. RESULTS: All patients had had at least one type of NMF, most of which were associated with the "off" state. Anxiety (66%), drenching sweats (64%), slowness of thinking (58%), fatigue (56%), and akathisia (54%) were the most frequent NMF. Some symptoms such as anxiety or dyspnea correlated with a greater level of disability. The total number of NMF was found to be correlated with the motor disability. Incapacity resulting from the dysautonomic fluctuations was also significantly correlated with levodopa treatment. Surprisingly, 28% of the patients stated that NMF involved a greater degree of disability than MF. CONCLUSION: Nonmotor fluctuations are frequent and debilitating in PD.


Assuntos
Doença de Parkinson/fisiopatologia , Doença de Parkinson/psicologia , Idoso , Doenças do Sistema Nervoso Autônomo/epidemiologia , Doenças do Sistema Nervoso Autônomo/fisiopatologia , Doenças do Sistema Nervoso Autônomo/psicologia , Distribuição de Qui-Quadrado , Transtornos Cognitivos/epidemiologia , Transtornos Cognitivos/fisiopatologia , Transtornos Cognitivos/psicologia , Feminino , Humanos , Masculino , Pessoa de Meia-Idade , Doença de Parkinson/epidemiologia , Estudos Prospectivos , Transtornos de Sensação/epidemiologia , Transtornos de Sensação/fisiopatologia , Transtornos de Sensação/psicologia , Estatísticas não Paramétricas , Inquéritos e Questionários
12.
Neuropsychologia ; 24(6): 769-79, 1986.
Artigo em Inglês | MEDLINE | ID: mdl-3808285

RESUMO

Deep dysphasia, an analogue of deep dyslexia in the auditory modality is a rare and peculiar pattern of repetition disturbance, which has been used to validate Morton's (Deep Dyslexia, pp. 189-196. Routledge & Kegan Paul, London, 1980) logogen theory. Such a case is reported here in which there was strong evidence of destruction of the left temporal lobe auditory areas. Examination of linguistic performance emphasized levels of auditory speech decoding. It was found that this patient had a profound phonemic discrimination deficit, yet could accomplish many lexical operations. It is argued that this case, in which a left temporal lobe lesion was associated with impaired phonological analysis, provides evidence that deep dysphasia may reflect the right hemisphere's non-phonological mode of speech processing.


Assuntos
Afasia de Wernicke/fisiopatologia , Afasia/fisiopatologia , Percepção da Fala/fisiologia , Lobo Temporal/fisiopatologia , Hemorragia Cerebral/complicações , Testes com Listas de Dissílabos , Discriminação Psicológica , Dominância Cerebral/fisiologia , Potenciais Evocados Auditivos , Humanos , Masculino , Pessoa de Meia-Idade , Fonética , Semântica
13.
Neuropsychologia ; 21(4): 413-8, 1983.
Artigo em Inglês | MEDLINE | ID: mdl-6621871

RESUMO

A strictly right-handed man showed aphasia and left hemiplegia following a deep infarct of the right hemisphere. Aphasic semeiology was characterized by an oral and written jargon while comprehension was almost intact. Several hypotheses previously put forward fail to account for the patient's aphasia. Emphasizing the frequency of deep structures involvement in the published cass of crossed dextral aphasias, it is suggested that site of lesion may have a certain part to play in the occurrence of such aphasias.


Assuntos
Afasia de Wernicke/patologia , Afasia/patologia , Gânglios da Base/patologia , Núcleo Caudado/patologia , Dominância Cerebral , Humanos , Masculino , Pessoa de Meia-Idade , Putamen/patologia
14.
Neuropsychologia ; 31(11): 1255-62, 1993 Nov.
Artigo em Inglês | MEDLINE | ID: mdl-8107985

RESUMO

Route description was investigated in two patients suffering from left unilateral neglect. Both had evident difficulty with left turns. This finding suggests that the topological correspondence between represented environment and representational mechanisms in the brain is not confined to frozen (picture-like) perspectives.


Assuntos
Transtornos da Percepção/psicologia , Desempenho Psicomotor/fisiologia , Idoso , Infarto Cerebral/psicologia , Feminino , Lateralidade Funcional/fisiologia , Humanos , Masculino , Mapas como Assunto , Pessoa de Meia-Idade
15.
Neuropsychologia ; 30(9): 783-95, 1992 Sep.
Artigo em Inglês | MEDLINE | ID: mdl-1407493

RESUMO

Motion perception was studied in a subject with bilateral lesion of the visual cortex, involving severe damage to cortical areas V1 and V4, but with no apparent damage to visual associative areas situated in occipito-parietal and lateral occipito-temporal (presumably V5) zones. He was able to perceive optical flow motions simulating motion in depth in "blind" parts of his visual field, provided that the stimulus-onset was temporally dissociated from its motion. Moreover, he was able to discriminate between different velocities and directions of motion. The results suggest that perimetrically "blind" parts of the visual field in this patient have true capacities to process visual motion. They are discussed in reference to the subject's ability to move freely in his environment and in reference to the role of extrastriate visual pathways in visual motion processing.


Assuntos
Cegueira/fisiopatologia , Percepção de Movimento/fisiologia , Córtex Visual/fisiopatologia , Campos Visuais/fisiologia , Aceleração , Adulto , Mapeamento Encefálico , Percepção de Profundidade/fisiologia , Aprendizagem por Discriminação/fisiologia , Dominância Cerebral/fisiologia , Humanos , Masculino , Orientação/fisiologia , Vias Visuais/fisiologia
16.
Neuropsychologia ; 37(1): 67-74, 1999 Jan.
Artigo em Inglês | MEDLINE | ID: mdl-9920472

RESUMO

We report a case of semantic agnosia, characterized by category specificity. Object recognition, mainly involving visual representation, was severely impaired, whereas object recognition involving both visual and sensorimotor representations, was relatively well preserved. His ability to recognize gestures and produce appropriate gestural responses to objects was remarkable. These two factors lead the authors to form a hypothesis, in an attempt to explain the mechanisms involved in object recognition. It has been argued that manipulation of an object may give access to a certain amount of knowledge about it, and that preservation of sensorimotor experiences of objects might be important in recognizing some of them. This could account for the category specificity, described in object agnosia.


Assuntos
Agnosia/psicologia , Memória/fisiologia , Tato/fisiologia , Percepção Visual/fisiologia , Agnosia/etiologia , Cognição/fisiologia , Coma/complicações , Coma/psicologia , Humanos , Masculino , Rememoração Mental , Pessoa de Meia-Idade , Testes Neuropsicológicos , Escalas de Wechsler
17.
Br J Pharmacol ; 105(1): 181-3, 1992 Jan.
Artigo em Inglês | MEDLINE | ID: mdl-1596679

RESUMO

1. Plasma levels of noradrenaline (NA) and neuropeptide Y (NPY) were evaluated in two experimental models associated with an increase in sympathetic tone: conscious dogs which were subject to either sinoaortic denervation or acute administration of the alpha 2-adrenoceptor antagonist yohimbine. 2. Dogs that had undergone sinoaortic denervation exhibited a two fold increase in plasma NA without any change in NPY levels. 3. Yohimbine (0.05 mg kg-1 i.v. as a bolus) produced similar effects. A higher dose of yohimbine (0.5 mg kg-1 i.v.) increased both plasma NA (7 fold) and NPY (6.5 fold) levels. 4. The present results indicate that changes in plasma catecholamines and NPY are not always concomitant. They suggest that the simultaneous release of NA and NPY is only observed under in vivo conditions for a marked increase in sympathetic tone.


Assuntos
Catecolaminas/sangue , Neuropeptídeo Y/sangue , Sistema Nervoso Simpático/fisiologia , Animais , Aorta/inervação , Pressão Sanguínea/efeitos dos fármacos , Pressão Sanguínea/fisiologia , Seio Carotídeo/inervação , Cães , Feminino , Frequência Cardíaca/efeitos dos fármacos , Frequência Cardíaca/fisiologia , Masculino , Denervação Muscular , Radioimunoensaio , Ioimbina/farmacologia
18.
J Dermatol Sci ; 2(5): 376-82, 1991 Sep.
Artigo em Inglês | MEDLINE | ID: mdl-1742248

RESUMO

Continuous laser Doppler measurements of methyl nicotinate-induced skin inflammation have been used to evaluate the activities of three oral non-steroidal anti-inflammatory drugs, indomethacin 50 mg (Indocid), tiaprofenic acid 100 mg (Surgam) and sodium acetylsalicylate 1 g (Catalgine). They were compared in a single-blind, randomized, intra-individual comparison (N = 16) versus placebo (lactose). One hour after each drug was ingested, four concentrations of methyl nicotinate were applied to the subject's forearms. Simultaneous skin blood flow (SBF) measurements were then carried out on the four tested zones, by use of four calibrated laser Doppler flowmeters. Computerized processing of recorded SBF levels provided data related to flow amplitude, kinetics and magnitude (area under the curve) of the reactions. A detailed statistical analysis was performed to establish the selectivity of this type of test and the following points were demonstrated: adjustment of SBF data to baseline did not improve precision, data had to be log-transformed before analysis, and magnitude data gave the best product discrimination. Under the conditions of this study, i.e. one hour after oral administration and for the indicated doses, the tested products could be classified, in terms of anti-inflammatory activity, as follows: Lactose less than Indomethacin 50 mg = Tiaprofenic acid 100 mg less than Sodium acetylsalicylate 1 g.


Assuntos
Anti-Inflamatórios não Esteroides/farmacologia , Pele/efeitos dos fármacos , Adulto , Anti-Inflamatórios não Esteroides/administração & dosagem , Aspirina/farmacologia , Dermatite de Contato/tratamento farmacológico , Dermatite de Contato/etiologia , Feminino , Humanos , Indometacina/farmacologia , Masculino , Ácidos Nicotínicos/administração & dosagem , Propionatos/farmacologia , Pele/irrigação sanguínea , Vasodilatação/efeitos dos fármacos
19.
Neuroreport ; 8(7): 1595-602, 1997 May 06.
Artigo em Inglês | MEDLINE | ID: mdl-9189898

RESUMO

The occurrence of anomia specifically affecting the ability to name animals is described in three patients. This deficit is contrasted with their capacity to name actions and tools. It is suggested that it is easier to access the names of 'operative' items, which were learned through both visual and sensorimotor experience, than the names of 'figurative' items, which were primarily learned through the visual modality. This hypothesis is consistent with the infero-temporal location of brain damage in these patients. Their ability to retrieve knowledge about operative items is assumed to be due to the sparing of the occipito-parietal area. Because the impairment also involves the recognition of animals, the likely locus of damage is the semantic component of the processing system.


Assuntos
Anomia/fisiopatologia , Cognição/fisiologia , Memória/fisiologia , Neurônios/fisiologia , Idoso , Anomia/patologia , Feminino , Humanos , Imageamento por Ressonância Magnética , Masculino , Pessoa de Meia-Idade , Lobo Occipital/patologia , Lobo Occipital/fisiopatologia , Lobo Parietal/patologia , Lobo Parietal/fisiopatologia , Semântica , Percepção Visual/fisiologia
20.
Clin Ther ; 23(2): 205-12, 2001 Feb.
Artigo em Inglês | MEDLINE | ID: mdl-11293554

RESUMO

BACKGROUND: Adapalene is a naphthoic acid derivative with retinoid activity that is effective in the treatment of mild to moderate acne vulgaris. OBJECTIVE: This study assessed the cumulative irritation potential of adapalene gel (0.1%) and adapalene cream (0.1%) compared with that of erythromycin (4%)/tretinoin (0.025%) solution, erythromycin (4%)/tretinoin (0.025%) gel, erythromycin (2%)/isotretinoin (0.05%) gel, and white petrolatum (negative control). METHODS: This was a single-center, randomized, controlled, investigator-blinded, intraindividual comparison study in healthy subjects with normal skin. The cumulative irritation assay (patch test) was used to assess the potential for irritation (including erythema) of the treatments. Each subject received all study treatments, randomly applied under occlusion (patch), to sites on either side of the midline on the mid-thoracic area of the back. All patches were applied to the same sites throughout the study, unless the degree of reaction to the treatment or adhesive necessitated removal. For 3 weeks, each test material was applied daily, Monday through Friday, for approximately 24 hours; the Friday patches were left in place over the weekend for approximately 72 hours. RESULTS: All 36 subjects (26 men, 10 women; age, 18-49 years [mean, 30 years]) completed the study. In the course of the study, all subjects had > or =1 application discontinued prematurely on > or =1 site due to intolerance. There were no discontinuations with white petrolatum. All erythromycin/tretinoin gel patches were discontinued at day 10; 35 of 36 erythromycin/isotretinoin gel patches were discontinued at day 9; and 35 of 36 erythromycin/tretinoin solution patches were discontinued at day 11 or day 17. The adapalene products, although slightly more irritating (mean cumulative irritation index, 0.25-1) than white petrolatum, were significantly less irritating than the erythromycin/tretinoin and erythromycin/isotretinoin products (P < 0.01). CONCLUSIONS: Adapalene gel and cream were well tolerated, with possible benefits for compliance. Their low irritation potential should be considered when prescribing a topical retinoid for the treatment of acne vulgaris.


Assuntos
Fármacos Dermatológicos/administração & dosagem , Eritromicina/administração & dosagem , Isotretinoína/administração & dosagem , Naftalenos/administração & dosagem , Tretinoína/administração & dosagem , Adapaleno , Adolescente , Adulto , Fármacos Dermatológicos/efeitos adversos , Combinação de Medicamentos , Eritromicina/efeitos adversos , Feminino , Géis , Humanos , Isotretinoína/efeitos adversos , Masculino , Pessoa de Meia-Idade , Naftalenos/efeitos adversos , Pomadas , Método Simples-Cego , Pele/efeitos dos fármacos , Testes de Irritação da Pele , Soluções , Tretinoína/efeitos adversos
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