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1.
Healthcare (Basel) ; 11(6)2023 Mar 21.
Artigo em Inglês | MEDLINE | ID: mdl-36981556

RESUMO

In the last two decades, the relationship between weight status and children's motor skill competence has been receiving increasing attention, given its possible role in the prevention and treatment of obesity. This study aimed to evaluate the effect of a multidisciplinary obesity treatment on motor performance in a sample of Italian children and adolescents. Visual and auditory reaction time (VRT and ART), vertical jump elevation (VJE) and power (VJP), body mass index (BMI) and BMI-standard deviation score (BMI-SDS), waist circumference (WC), body composition, dietary habits and physical activity (PA) levels were assessed at baseline and at 6- and 12-month follow-up. Significant improvements were observed in BMI-SDS and FFM, diet and PA levels. Adolescents showed significant improvements in VRT and ART. Jump elevation and power increased in both children and adolescent subgroups. Girls exhibited greater changes than boys in both VRT and ART and VJP but lower changes in VJE. VRT improvement was related to age (OR = 0.285, 95%CI 0.098-0.830, p = 0.021) and FFM (OR = 0.255, 95%CI 0.070-0.933, p = 0.039). An increase in VJE was associated with BMI-SDS (OR = 0.158, 95%CI 0.036-0.695, p = 0.015) and with PA level (OR = 19.102, 95%CI 4.442-82.142, p < 0.001); the increase in VJP was related with the increase in PA (OR = 5.564, 95%CI 1.812-17.081, p = 0.003). These findings suggest the possible effects of a multidisciplinary obesity treatment on children's motor competence. Since the improvement in motor skills can increase children's motivation and adherence to weight loss treatment in the long term, these aspects should be further investigated.

2.
Children (Basel) ; 9(6)2022 Jun 04.
Artigo em Inglês | MEDLINE | ID: mdl-35740771

RESUMO

Childhood obesity must be faced through an integrated multi-level preventive approach. This study was aimed at assessing the adherence and the outcomes of an outpatient service for childhood obesity treatment activated in the province of Naples, Italy, throughout a 2-year follow-up period. At first visit (T0), weight, height, waist circumference, and body composition of children were assessed, together with sociodemographic features and physical activity levels of children and parents. Anthropometric and body composition parameters of children were measured at 6 ± 3 months (T1) and 12 ± 3 months (T2). A total of 451 non-related children who accessed the service were analyzed: 220 (48.7%) of them returned at least once (attrition rate 51.3%). Returner outpatients showed higher age (p = 0.046) and father's educational level (p = 0.041) than non-returner ones. Adherence to the treatment was found to be related to father's (Rho = 0.140, p = 0.005) and mother's (Rho = 0.109, p = 0.026) educational level. All the outcomes improved between T0 and T1 (p < 0.001), while only body mass index (BMI) decreased significantly at T2. Changes in BMI-SDS were associated with baseline value (OR 0.158, 95%CI 0.017−0.298, p = 0.029). The multidisciplinary approach seems to be promising to treat childhood obesity in this geographic context. Lower parents' educational level should be considered as an attrition determinant.

3.
Nutr Metab Cardiovasc Dis ; 31(12): 3502-3507, 2021 11 29.
Artigo em Inglês | MEDLINE | ID: mdl-34728130

RESUMO

BACKGROUND AND AIMS: Restriction measures adopted during the Coronavirus Disease-19 pandemic favored unhealthy behaviors. Tele-health offered the opportunity to pursue alternative ways of chronic diseases management. This retrospective study sought to determine the effects of a telehealth counselling intervention during the lockdown to children and adolescents with obesity previously engaged in a family-based secondary care program in an outpatient clinic of South Italy. METHODS AND RESULTS: 117 out of 156 patients participated to the tele-health intervention. Participants underwent videocalls with each component of the multidisciplinary team to receive support in adopting adequate dietary habits and to practice exercise at home. They were included in a closed social group to watch age-adapted tutorials on healthy habits. 75 patients returned to the Center after the end of the lockdown, while only 7 patients who did not participate to the videocalls, took part to the follow-up. Body Mass Index and body composition were assessed in all these patients. BMI z score did not increase in both groups. However, a significant increase of fat mass was observed in the non-participating group (0.046), while the intervention group showed an increase of fat free mass (p < 0.000). CONCLUSION: Notwithstanding the limited sample size, the telehealth intervention allowed the maintenance of baseline weight status in participants, with an increase of fat-free mass. As the CoViD-19 pandemic moves forward, the increasing adoption of the new technologies may help the continuity of care, even in pediatric obesity treatment.


Assuntos
COVID-19/epidemiologia , Continuidade da Assistência ao Paciente , Obesidade Infantil/terapia , Telemedicina/métodos , Adolescente , Índice de Massa Corporal , COVID-19/prevenção & controle , Criança , Controle de Doenças Transmissíveis/métodos , Exercício Físico , Comportamento Alimentar , Feminino , Humanos , Itália/epidemiologia , Masculino , Pandemias , Obesidade Infantil/epidemiologia , Estudos Retrospectivos , SARS-CoV-2
5.
Neurol Sci ; 40(10): 2217-2234, 2019 Oct.
Artigo em Inglês | MEDLINE | ID: mdl-31392641

RESUMO

Epilepsy in brain tumors (BTE) may require medical attention for a variety of unique concerns: epileptic seizures, possible serious adverse effects of antineoplastic and antiepileptic drugs (AEDs), physical disability, and/or neurocognitive disturbances correlated to tumor site. Guidelines for the management of tumor-related epilepsies are lacking. Treatment is not standardized, and overall management might differ according to different specialists. The aim of this document was to provide directives on the procedures to be adopted for a correct diagnostic-therapeutic path of the patient with BTE, evaluating indications, risks, and benefits. A board comprising neurologists, epileptologists, neurophysiologists, neuroradiologists, neurosurgeons, neuro-oncologists, neuropsychologists, and patients' representatives was formed. The board converted diagnostic and therapeutic problems into seventeen questions. A literature search was performed in September-October 2017, and a total of 7827 unique records were retrieved, of which 148 constituted the core literature. There is no evidence that histological type or localization of the brain tumor affects the response to an AED. The board recommended to avoid enzyme-inducing antiepileptic drugs because of their interference with antitumoral drugs and consider as first-choice newer generation drugs (among them, levetiracetam, lamotrigine, and topiramate). Valproic acid should also be considered. Both short-term and long-term prophylaxes are not recommended in primary and metastatic brain tumors. Management of seizures in patients with BTE should be multidisciplinary. The panel evidenced conflicting or lacking data regarding the role of EEG, the choice of therapeutic strategy, and timing to withdraw AEDs and recommended high-quality long-term studies to standardize BTE care.


Assuntos
Neoplasias Encefálicas/complicações , Epilepsia/etiologia , Epilepsia/terapia , Humanos
6.
Behav Sci (Basel) ; 7(3)2017 Aug 07.
Artigo em Inglês | MEDLINE | ID: mdl-28783090

RESUMO

The Inventory Déjà Vu Experiences Assessment (IDEA) is the only screening instrument proposed to evaluate the Déjà vu (DV) experience. Here, we intended to validate the Italian version of IDEA (I-IDEA) and at the same time to investigate the incidence and subjective qualities of the DV phenomenon in healthy Italian adult individuals on basis of an Italian multicentre observational study. In this study, we report normative data on the I-IDEA, collected on a sample of 542 Italian healthy subjects aging between 18-70 years (average age: 40) with a formal educational from 1-19 years. From September 2013 to March 2016, we recruited 542 healthy volunteers from 10 outpatient neurological clinics in Italy. All participants (i.e., family members of neurological patients enrolled, medical students, physicians) had no neurological or psychiatric illness and gave their informed consent to participate in the study. All subjects enrolled self-administered the questionnaire and they were able to complete I-IDEA test without any support. In total, 396 (73%) of the 542 healthy controls experienced the DV phenomenon. The frequency of DV was inversely related to age as well as to derealisation, jamais vu, precognitive dreams, depersonalization, paranormal activity, remembering dreams, travel frequency, and daydreams (all p < 0.012). The Italian version of IDEA maintains good properties, thus confirming that this instrument is reliable for detecting and characterising the DV phenomenon.

7.
PLoS One ; 12(7): e0180470, 2017.
Artigo em Inglês | MEDLINE | ID: mdl-28715490

RESUMO

Epilepsy is the most common comorbidity in patients with brain tumors. STUDY AIMS: To define characteristics of brain tumor-related epilepsy (BTRE) patients and identify patterns of care. Nationwide, multicenter retrospective cohort study. Medical records of BTRE patients seen from 1/1/2010 to 12/31/2011, followed for at least one month were examined. Information included age, sex, tumor type/treatments, epilepsy characteristics, antiepileptic drugs (AEDs). Time to modify first AED due to inefficacy and/or toxicity was assessed with the Kaplan-Meier method and Cox proportional hazard models were used to identify predictors of treatment outcome. Enrolled were 808 patients (447 men, 361 women) from 26 epilepsy centers. Follow-up ranged 1 to 423 months (median 18 months). 732 patients underwent surgery, 483 chemotherapy (CT), 508 radiotherapy. All patients were treated with AEDs. Levetiracetam was the most common drug. 377 patients (46.7%) were still on first drug at end of follow-up, 338 (41.8%) needed treatment modifications (uncontrolled seizures, 229; side effects, 101; poor compliance, 22). Treatment discontinuation for lack of efficacy was associated with younger age, chemotherapy, and center with <20 cases. Treatment discontinuation for side effects was associated with female sex, enzyme-inducing drugs and center with > 20 cases. About one-half of patients with BTRE were on first AED at end of follow-up. Levetiracetam was the most common drug. A non enzyme-inducing AED was followed by a lower risk of drug discontinuation for SE.


Assuntos
Neoplasias Encefálicas/complicações , Epilepsia/complicações , Epilepsia/tratamento farmacológico , Assistência ao Paciente/estatística & dados numéricos , Adulto , Anticonvulsivantes/uso terapêutico , Feminino , Humanos , Itália , Masculino , Estudos Retrospectivos , Risco , Análise de Sobrevida , Resultado do Tratamento
8.
Epilepsy Behav ; 58: 111-4, 2016 05.
Artigo em Inglês | MEDLINE | ID: mdl-27064831

RESUMO

PURPOSE: The aim of this study was to evaluate the efficacy and tolerability of lacosamide (LCM) both as add-on therapy and monotherapy in patients with temporal lobe epilepsy (TLE) based on an observational, prospective, multicenter study. METHODS: We enrolled 100 patients (mean age: 43.4±12.53years, 57 females) with nonlesional TLE and TLE with hippocampal sclerosis (HS) that did not respond to the first drug and who were referred to epilepsy centers of the University of Catanzaro, University of Palermo, IRCSS Neuromed of Pozzilli, and Otto-von-Guericke University of Magdeburg. In this open-label, multicenter trial, patients were initiated on oral LCM as add-on therapy to first AED monotherapy or as a later add-on to two concomitant AEDs. Seizure frequency changes and adverse events were recorded for at least six months after LCM was added. RESULTS: Fourteen patients dropped out because of positive MRI findings other than HS. Patients received LCM at 200-400mg/day. Fifty-eight out of these 86 patients with seizures that were previously drug-resistant had reduced seizure frequency after introduction of LCM. Forty-five out of 86 patients were classified as responders (12 were seizure-free, 33 achieved a reduction >50%). Interestingly, five patients out of 86 achieved seizure freedom for at least one year and progressively switched to monotherapy with LCM, and all five remained seizure-free at follow-up (6-48months). CONCLUSIONS: Our results may suggest that LCM at doses of 200 to 400mg/day reduces seizure frequency in adults with TLE regardless of the presence of HS, and that it may be considered as a first add-on treatment for patients with pharmacoresistant TLE.


Assuntos
Acetamidas/administração & dosagem , Anticonvulsivantes/administração & dosagem , Epilepsia do Lobo Temporal/diagnóstico por imagem , Epilepsia do Lobo Temporal/tratamento farmacológico , Adulto , Estudos de Coortes , Quimioterapia Combinada , Epilepsia do Lobo Temporal/fisiopatologia , Feminino , Seguimentos , Humanos , Lacosamida , Imageamento por Ressonância Magnética/métodos , Masculino , Pessoa de Meia-Idade , Estudos Prospectivos , Adulto Jovem
9.
J Epilepsy Res ; 6(2): 79-86, 2016 Dec.
Artigo em Inglês | MEDLINE | ID: mdl-28101479

RESUMO

BACKGROUND AND PURPOSE: There are several primary causes for excessive daytime sleepiness (EDS) and sleep disorders in patients with epilepsy. Up to now, studies in the literature report conflicting data in terms of both prevalence and aetiology. The aim of our study was therefore to evaluate the prevalence of EDS and some sleep disorders in a population of patients with epilepsy treated with no more than two antiepileptic drugs (AEDs). We also investigated the role of the depression of mood as a variable that can negatively affect EDS. METHODS: We prospectively and consecutively recruited 99 patients with a diagnosis of epilepsy, sleep disorders and EDS, belonging to the Centre for Epilepsy of the Department of Experimental Biomedicine and Clinical Neurosciences of the University of Palermo. 61.6% of patients recruited were suffering from focal epilepsy, and 38.3% from generalized epilepsy. 68.6% were undertaking monotherapy and 27.2% were drug resistant. Patients were matched for sex and age (+/- 5 years) with 96 non epileptic controls recruited from high school students, college students, relatives and friends of the medical team that conducted the study. EDS was found in 11.1% of patients with epilepsy. Clinical evaluation of sleep disorders was performed using validated questionnaires to investigate excessive daytime sleepiness (EDS), insomnia, Restless Legs Syndrome (RLS) and Obstructive Sleep Apnoea Syndrome (OSAS). In a second phase of the study, 43 of the investigated patients and 34 controls - after giving their consent - underwent a polysomnographic examination by "Compumedics Somtè". RESULTS: Our study shows a statistically significant difference between cases and controls with regard to the prevalence of RLS (p = 0.022) and severity of OSAS with an increased risk in moderate-severe forms of epilepsy (odd ratio [OR] 2.5) most significantly associated with male gender (p = 0.04) and focal epilepsy (OR 3.8) with PSG seizures (0.02). Moreover, a statistically significant difference was demonstrated about mood disorders (p = 0.001) among patients with epilepsy and non epileptic controls. Sleepiness in patients with epilepsy seems to be particularly related to both the depression of mood (p = 0.01) and the presence of OSAS (p = 0.03), as well as to a higher mean age (p = 0.006) and a longer duration of illness (p = 0.04). CONCLUSIONS: Our results confirm that drowsiness trouble frequently complained by patients with epilepsy, is particularly related not only to the presence of OSAS but also to the depression of mood.

10.
Epilepsy Behav ; 47: 98-103, 2015 Jun.
Artigo em Inglês | MEDLINE | ID: mdl-25982884

RESUMO

BACKGROUND AND AIM: Despite an extensive literature on cognitive impairments in focal and generalized epilepsy, only a few number of studies specifically explored social cognition disorders in epilepsy syndromes. The aim of our study was to investigate social cognition abilities in patients with temporal lobe epilepsy (TLE) and in patients with idiopathic generalized epilepsy (IGE). MATERIALS AND METHODS: Thirty-nine patients (21 patients with TLE and 18 patients with IGE) and 21 matched healthy controls (HCs) were recruited. All subjects underwent a basic neuropsychological battery plus two experimental tasks evaluating emotion recognition from facial expression (Ekman-60-Faces test, Ek-60F) and mental state attribution (Story-based Empathy Task, SET). In particular, the latter is a newly developed task that assesses the ability to infer others' intentions (i.e., intention attribution - IA) and emotions (i.e., emotion attribution - EA) compared with a control condition of physical causality (i.e., causal inferences - CI). RESULTS: Compared with HCs, patients with TLE showed significantly lower performances on both social cognition tasks. In particular, all SET subconditions as well as the recognition of negative emotions were significantly impaired in patients with TLE vs. HCs. On the contrary, patients with IGE showed impairments on anger recognition only without any deficit at the SET task. DISCUSSION: Emotion recognition deficits occur in patients with epilepsy, possibly because of a global disruption of a pathway involving frontal, temporal, and limbic regions. Impairments of mental state attribution specifically characterize the neuropsychological profile of patients with TLE in the context of the in-depth temporal dysfunction typical of such patients. CONCLUSION: Impairments of socioemotional processing have to be considered as part of the neuropsychological assessment in both TLE and IGE in view of a correct management and for future therapeutic interventions.


Assuntos
Transtornos Cognitivos/etiologia , Cognição/fisiologia , Emoções , Epilepsia Generalizada/psicologia , Epilepsia do Lobo Temporal/psicologia , Comportamento Social , Adulto , Empatia , Epilepsia/complicações , Epilepsia Generalizada/fisiopatologia , Epilepsia do Lobo Temporal/fisiopatologia , Face/fisiopatologia , Expressão Facial , Feminino , Humanos , Masculino , Pessoa de Meia-Idade , Testes Neuropsicológicos , Percepção Social , Lobo Temporal/fisiopatologia
11.
Seizure ; 20(1): 90-2, 2011 Jan.
Artigo em Inglês | MEDLINE | ID: mdl-20943420

RESUMO

Neuroimaging, an important diagnostic tool frequently used in the evaluation of patients with epilepsy, has mainly the aim to identify structural abnormalities needing a treatment and to contribute to the definition of the aetiology. Brain magnetic resonance imaging (MRI) in epilepsy is more sensitive than computerized tomography (CT) scan for detecting abnormalities. Status epilepticus (SE) and repeated incoming seizures may determine extensive and transient or long lasting pronounced MRI changes. We describe a case of a 41-year-old woman with a history of brain neoplasm, whose contrast-enhanced MRI images following repeated and incoming seizures were characterized either by reversible and irreversible abnormalities.


Assuntos
Imageamento por Ressonância Magnética , Convulsões/diagnóstico , Convulsões/fisiopatologia , Adulto , Eletroencefalografia , Feminino , Humanos , Recidiva
12.
Cerebellum ; 8(3): 260-6, 2009 Sep.
Artigo em Inglês | MEDLINE | ID: mdl-19156474

RESUMO

Subtle clinical cerebellar alterations have been found in migraine. Moreover, abnormalities in visual and motor cortex excitability consistent with a lack of inhibitory efficiency have been described in migraine, and it is known that cerebellum exerts an inhibitory control on cerebral cortex. Here, we investigated if impairment of cerebellar activity on motor cortex, i.e. reduced inhibitory control, can be found in migraine. Ten migraineurs with aura and seven healthy controls underwent a transcranial magnetic stimulation (TMS) protocol to investigate the cerebellar inhibitory drive on motor cortex: a conditioning pulse on right cerebellar cortex was delivered 5, 7, 10, 15 ms before a test stimulus (TS) on contralateral motor cortex. The cerebellar conditioning stimulus inhibits the size of the motor-evoked potential (MEP) produced by the TS alone by approximately 30-50%. Amplitude of MEP to TS alone showed no significant difference between patients and controls. Cerebellar conditioning TMS showed a significant deficit of cerebellar inhibition in migraine patients as compared to controls at all interstimulus intervals (5-15 ms) tested. Cerebellar inhibition is reduced in migraineurs. This could account, at least in part, for the reduced inhibitory efficiency previously showed in cerebral cortex of these patients.


Assuntos
Cerebelo/fisiopatologia , Potencial Evocado Motor/fisiologia , Enxaqueca com Aura/patologia , Córtex Motor/fisiopatologia , Estimulação Magnética Transcraniana/métodos , Adulto , Vias Aferentes/fisiopatologia , Análise de Variância , Biofísica , Eletromiografia/métodos , Feminino , Humanos , Masculino , Tempo de Reação/fisiologia , Fatores de Tempo
13.
Exp Brain Res ; 184(4): 521-8, 2008 Feb.
Artigo em Inglês | MEDLINE | ID: mdl-17828389

RESUMO

Dopaminergic drugs and deep brain stimulation restore cortical inhibition in Parkinson disease (PD) patients. High-frequency rTMS was also found to increase cortical inhibition in PD but its therapeutic effect is still controversial. Here we hypothesize that, if dopaminergic drugs reverse to normal cortical excitability in M1, the effect of high-frequency (hf)-rTMS in PD patients could depend on whether they are in a medicated or unmedicated state. The present study aims to explore the lasting effects of sub-threshold hf rTMS trains over M1 on cortical inhibition in patients with "on" and without "off" L-DOPA treatment. Fourteen PD patients were examined twice while "on" and "off" medication. In both conditions, a paired-pulse paradigm was used to evaluate short intracortical inhibition (SICI) and long intracortical inhibition (LICI) that were evaluated before and after hf rTMS trains applied on the motor cortex. The results were compared with those obtained from normal controls. In baseline condition, SICI and LICI were significantly reduced in "off" compared to "on" patients and controls. hf-rTMS over the motor cortex significantly increased SICI and LICI in "off" medication PD patients. Magnetic stimulation proved to be ineffective when the same patients were in "on" state. The results showed that hf-rTMS affected intracortical inhibition (ICI) only in unmedicated patients. By restoring cortical inhibitory circuits dopaminergic drugs, normalize the excitability changes in M1 subsequent to motor rTMS. Whether patients are in a medicated or an unmedicated state would therefore appear to be critical for rTMS effects in PD patients. If a positive correlation exists between increased cortical inhibition and clinical improvement, hf-rTMS during the "off" state could be regarded as a potential add-on treatment to reduce the need of L-dopa and thus delay the adverse effects of its chronic use.


Assuntos
Antiparkinsonianos/farmacologia , Levodopa/farmacologia , Inibição Neural/fisiologia , Doença de Parkinson/tratamento farmacológico , Estimulação Magnética Transcraniana , Idoso , Idoso de 80 Anos ou mais , Terapia Combinada , Feminino , Humanos , Masculino , Pessoa de Meia-Idade , Atividade Motora/efeitos dos fármacos , Atividade Motora/fisiologia , Córtex Motor/efeitos dos fármacos , Córtex Motor/fisiologia , Inibição Neural/efeitos dos fármacos , Doença de Parkinson/fisiopatologia
14.
Funct Neurol ; 21(1): 43-6, 2006.
Artigo em Inglês | MEDLINE | ID: mdl-16735001

RESUMO

Cerebrospinal fluid (CSF) volume depletion syndrome is due to leakage of cerebrospinal fluid through lesions of the dural sac at the level of the cranial base or of the spine. When past medical history is negative for recent trauma or surgery, the term spontaneous intracranial hypotension (SIH) is used. SIH is characterized clinically by orthostatic headache, neck pain, nausea, emesis, horizontal diplopia, tinnitus, plugged ear, hearing difficulties, blurring of vision, facial numbness, and upper limb radicular symptoms. In SIH, brain and cervical MR scans show a diffuse pachymeningeal gadolinium enhancement that ends at the site of CSF leakage. The application of epidural blood patches has been proposed as an effective therapy for SIH. Here we describe a case of SIH with very unusual headache features; the patient reported a paradoxical pattern of postural headache provoked by clinostatic position. The CSF leakage was identified at the convexity of the skull and headache disappeared following treatment with fluid, analgesics and steroids.


Assuntos
Cefaleia/etiologia , Hipotensão Intracraniana/etiologia , Fraturas Cranianas/complicações , Pressão do Líquido Cefalorraquidiano , Cefaleia/líquido cefalorraquidiano , Humanos , Hipotensão Intracraniana/terapia , Masculino , Pessoa de Meia-Idade , Fraturas Cranianas/líquido cefalorraquidiano , Síndrome , Resultado do Tratamento
15.
Neurosci Lett ; 397(3): 229-33, 2006 Apr 24.
Artigo em Inglês | MEDLINE | ID: mdl-16426754

RESUMO

Electrical stimulation of the cerebellar cortex by implanted electrodes has been shown to ameliorate refractory epilepsy. We investigated the potential therapeutic role of high-frequency cerebellar rTMS in patients affected by refractory epilepsy due to single or multiple foci. Six patients, three with single and three with multiple epileptic foci, underwent 20 rTMS sessions. Each session was given daily, excluding weekends, and consisted of two trains of 50 stimuli (5 Hz frequency and 90% motor threshold intensity), separated by 50s interval. rTMS was delivered through a focal coil (2 cm below and lateral to the inion) bilaterally in patients with multiple foci (two trains for hemisphere: 100 stimuli each side) and contralaterally to the epileptic focus in the others. Seizure frequency was monitored four weeks before stimulation (pre-rTMS), during the four-week treatment (rTMS) and four weeks after the treatment (post-rTMS). The rTMS over the cerebellar cortex was associated with a significant decrease of rTMS versus pre-rTMS seizure frequency both in patients with single and multiple epileptic foci. However, during the post-rTMS period seizure frequency was back to the pre-rTMS frequency. Although the results are still preliminary, they encourage further studies on larger series of patients. In particular, this rTMS approach, as compared with others, might be more useful in patients with multiple epileptic foci.


Assuntos
Córtex Cerebelar/fisiopatologia , Epilepsia/terapia , Estimulação Magnética Transcraniana , Adulto , Resistência a Medicamentos , Epilepsia/fisiopatologia , Feminino , Humanos , Masculino
16.
J Physiol ; 565(Pt 2): 659-65, 2005 Jun 01.
Artigo em Inglês | MEDLINE | ID: mdl-15760946

RESUMO

The aim of the present study was to explore further the effects of light deprivation (LD) on visual cortex excitability. Healthy subjects reporting reliable induction of phosphenes by occipital transcranial magnetic stimulation (TMS) underwent 60 min of complete LD. Phosphene threshold (PT) was measured before (T0), after 45 min (T1) and 60 min (T2) of LD, and then every 10 min after light re-exposure until recovery to T0 values. Repetitive TMS (rTMS) (at 1 or 10 Hz) was applied in separate sessions during the last 15 min of LD. PTs significantly decreased after 45 min of LD. rTMS differentially modified the effects of 60 min LD on PTs depending on stimulation frequency. One hertz rTMS did not change the decreasing of PT values as observed in baseline condition, but significantly prolonged the time to recover T0 PT values after light re-exposure. By contrast, 10 Hz rTMS significantly increased PT and the time to recover T0 PT values after light re-exposure was shortened. The results of this study show that the modulatory effects of different rTMS frequencies on visual cortex critically depend on the pre-existing excitability state of inhibitory and facilitatory circuits, and provide novel insights into the neurophysiological changes that take place in the visual cortex following functional visual deafferentation.


Assuntos
Privação Sensorial/fisiologia , Estimulação Magnética Transcraniana , Córtex Visual/fisiologia , Adulto , Estimulação Elétrica , Feminino , Humanos , Masculino , Pessoa de Meia-Idade , Inibição Neural/fisiologia , Fosfenos/fisiologia , Estimulação Luminosa
17.
J Neurol Sci ; 227(1): 67-71, 2004 Dec 15.
Artigo em Inglês | MEDLINE | ID: mdl-15546593

RESUMO

A recent fMRI study showed that dorsolateral prefrontal cortex (DLPFC) exerts an inhibitory control on pain pathways in humans. We investigated whether high-frequency rTMS over left DLPFC could ameliorate chronic migraine. Treatment consisted of 12 rTMS sessions, delivered in alternate days over left DLPFC. Sham rTMS was used as placebo. Eleven patients were randomly assigned to the rTMS (n=6) or to the placebo (n=5) treatment. Measures of attack frequency, headache index, number of abortive medications (outcome measures) were recorded in the month before, during and in the month after treatment. Subjects treated by rTMS showed a significant reduction of the outcome measures during and in the month after the treatment as compared to the month before treatment. No significant differences in the outcome measures were observed in the placebo group. High-frequency rTMS over left DLPFC was able to ameliorate chronic migraine. This is in agreement with the suggested role of DLPFC in pain control.


Assuntos
Estimulação Elétrica , Magnetismo , Transtornos de Enxaqueca/terapia , Córtex Pré-Frontal/efeitos da radiação , Adulto , Análise de Variância , Doença Crônica/terapia , Método Duplo-Cego , Feminino , Cefaleia/terapia , Humanos , Masculino , Pessoa de Meia-Idade , Projetos Piloto , Escalas de Graduação Psiquiátrica , Fatores de Tempo , Resultado do Tratamento
18.
Funct Neurol ; 18(2): 95-6, 2003.
Artigo em Inglês | MEDLINE | ID: mdl-12911140

RESUMO

We report the case of a patient who, following a right thalamic haemorrhage, developed thalamic syndrome characterised by burning pain and hyperalgesia in the left side of the body. Three years later, following a further (contralateral ischaemic) stroke, she reported the complete disappearance of the pain and hyperalgesia. To our knowledge, this is the first described case of disappearance of thalamic syndrome following a second stroke, different in nature from and contralateral to the first. Various hypotheses, based on the nervous tracts and nuclei involved in pain processing, may be advanced to explain this occurrence.


Assuntos
Isquemia Encefálica/complicações , Limiar da Dor , Dor/etiologia , Acidente Vascular Cerebral/complicações , Doenças Talâmicas/etiologia , Idoso , Feminino , Lobo Frontal/fisiopatologia , Lateralidade Funcional , Humanos , Lobo Parietal/fisiopatologia , Remissão Espontânea , Acidente Vascular Cerebral/fisiopatologia , Síndrome , Doenças Talâmicas/fisiopatologia
20.
Neuroreport ; 13(18): 2571-5, 2002 Dec 20.
Artigo em Inglês | MEDLINE | ID: mdl-12499870

RESUMO

Recently some authors have challenged the conventional association of directional motor neglect with damage of frontal structures, showing that pure sensory perceptual neglect (classically associated with parietal lesion) can follow damage of right frontal cortex. The aim of the present study was to assess the type of defect in visuo-spatial attention consequent upon a virtual frontal or parietal lesion induced by transcranial magnetic stimulation in normal subjects. To this purpose eleven subjects performed a visuo-spatial task requiring judgement about the length of the two segments of asymmetrically bisected horizontal lines, presented for 50 ms on a computer monitor. After each visual stimulus, subjects made a binary forced choice decision according to two different response conditions: A and B. In condition A, they had to name (right or left) the longer segment and in B the shorter segment of the line. The task was given in baseline condition and during repetitive transcranial magnetic stimulation. Trains of 10 stimuli at 25 Hz of frequency were applied over right frontal premotor and right posterior parietal areas, synchronously with visual stimuli. Parietal and frontal magnetic stimulation gave rise to significant perceptual bias as compared to baseline performance (i.e. subjects made opposite errors in the two response conditions). No significant response bias (i.e. the tendency to name the same side of the line in the two response conditions) was induced by magnetic stimulation on parietal and frontal sites. The present study highlights both the relevant contribution of frontal cortex in the determinism of neglect and the predominant role of sensory perceptual factors in parietal and frontal neglect.


Assuntos
Lobo Frontal/fisiologia , Lobo Parietal/fisiologia , Transtornos da Percepção/fisiopatologia , Percepção Espacial/fisiologia , Estimulação Magnética Transcraniana , Adulto , Idoso , Estimulação Elétrica , Humanos , Pessoa de Meia-Idade
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