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Biomedical subjects

M Vercelletto

Publications and source records attributed to M Vercelletto.

12 recordsLinked to original sources

[Measurement instruments and assessment scales for frontotemporal dementia].

In frontotemporal dementia (FTD), evaluation scales and measurement instruments are less codified than in Alzheimer's disease. Some nonspecific scales are available, two of which are very useful for early diagnose of the disease: Lebert and Pasquier's Frontotemporal Behavioral Scale (FBS) to assess behavioral disturbances and Dubois's Frontal Assessment Battery (FAB) to assess executive ability. However, these scales do not contain enough items to follow up FTD. The main scale used to follow up the disease is the Neuropsychiatric Inventory (NPI). The Frontal Behavioural Inventory (Kertesz) seems to be interesting, but has not yet been validated in France. The Mattis Dementia Rating Scale, not specific for FTD, is used to assess the cognitive rate. The activities of daily living scales and caregiver burden are not well known in FTD.

Alzheimer Disease↗

[Amyotrophic lateral sclerosis: cognitive and behavioral evaluation].

Cognitive impairment in nondemented ALS patients has been demonstrated, although its incidence remains to be determined. FTD is the most frequently form of dementia in ALS. The clinical profile of patients with dementia or mild cognitive deficit evokes neuropsychological deficits and behavioural changes resulting from executive dysfunction. The psychometric evaluation, centred on executive disturbances, goes with behavioural scales in order to accurately appreciate the repercussion of cognitive and behavioural changes on daily life.

Amyotrophic Lateral Sclerosis↗

[Dural arteriovenous fistula. A rare cause of treatable dementia].

Dural fistulas are acquired arteriovenous shunts, accounting for 10-15p.cent of cerebrovascular malformations. Symptoms are commonly tinnitus or intracranial hemorrhage. Rarely, patients with dural fistulas can present with rapid cognitive impairment. We report two women with rapidly evolving dementia. Cerebral angiography revealed dural arteriovenous fistula, with retrograde drainage into cortical veins, related to thrombosis of both transverse sinuses. Intra-arterial and intra-venous endovascular approaches failed to cure the fistula. Venous embolization via a transcranial approach was required to occlude the fistula, leading to resolution of the symptoms. Dural arteriovenous fistulas may lead to dementia with diffuse white matter changes related to venous ischemia, and must be considered as a reversible cause of vascular dementia. A transcranial approach for venous embolization is sometimes required.

Central Nervous System Vascular Malformations↗

Iatrogenic Creutzfeldt-Jakob disease subsequent to dural graft: persisting risk after 1987.

The first case of Creutzfeldt-Jakob disease (CJD) related to the use of a dura mater graft of cadaveric origin was identified in 1987 and this procedure is now considered as one of the main causes of iatrogenic CJD. Although the decontamination procedure for the preparation of graft material was modified, the product was withdrawn from the market in many countries a few years later and replaced by synthetic material. In this context, two patients treated in our institution developed CJD following a cadaveric dural graft performed after cerebral and lumbar trauma. Their clinical presentation, showing predominant cerebellar symptoms, late deterioration and myoclonic jerks, and a rapid disease course until death, was similar to that of previously reported cases involving the iatrogenic form. As the graft for one of the patients was performed in 1991 (several years after modification of the decontamination procedure), this fourth reported case suggests that the risk of iatrogenic CJD may have persisted in some patients treated after 1987, when grafts of cadaveric origin were totally abandoned.

Adult↗

[Neuropsychological and scintigraphic aspects of frontotemporal dementia preceding amyotrophic lateral sclerosis].

Between 1993 and 2001, we observed fifteen patients (ten men and five women, mean age 63 years) with frontotemporal dementia (FTD) which preceded signs of amyotrophic lateral sclerosis (ALS) which developed 21 months later. Mean disease duration in the fourteen deceased patients was 38 months. FTD associated with ALS is characterized by rapid course, predominance of disinhibited forms (orbito-basal), presence of aphasia with neologisms, and semantic memory disorders. Performed in all patients, single-photon emission computed tomography demonstrated a bifrontal pattern of low uptake, sometimes associated with low uptake in the anterior temporal region. In one patient, neuropathology revealed neuron atrophy and loss in the frontotemporal region, the anterior horns, and the hypoglossal nucleus. Ubiquitin-positive inclusions were visible in the dentate gyrus of the hippocampus and in the anterior horns. The dementia/ALS association is classically described is uncommon. It belongs to the FTD group since the Lund and Manchester consensus. Approximately 15 p.100 of patient with FTD can be expected to develop ALS. About 250 cases have been reported in the literature, half of them in the Pacific area where the incidence of ALS is high (55/100,000 inhabitants versus 1/100,000 in the rest of the world). Intermediary forms of FTD, semantic dementia, and progressive non-fluent aphasia are discussed since several cases of non-fluent progressive aphasia associated with ALS are reported in the literature. The links between these two degenerative diseases are discussed.

Aged↗

Frontal type dementia preceding amyotrophic lateral sclerosis: a neuropsychological and SPECT study of five clinical cases.

Between 1993 and 1995, we observed five sporadic cases of frontotemporal dementia (FTD) which in all cases preceded the appearance of typical amyotrophic lateral sclerosis (ALS). The FTD rapidly became severe (within 12-18 months) and the delay between the presumed onset of mental change and ALS was short (12-26 months). The frontal dysfunction was characteristic (disinhibited, jocular, impatient, gluttonous, stereotypical gestures). The language impairment (less talkative, persistent errors, fantastic and semantic paraphasia, neologistic errors, echolalia) was constant. Single photon emission computed tomography (SPECT) with 99 Tcm HMPAO (hexamethyl propylamine oxime) was done at the same time as neuropsychological testing in four cases and showed serious diffuse bifrontal defect, sometimes with less serious internal temporal hypofixation. All patients died with bulbar ALS complications. The total course can last from 14-48 months. Most of the reported cases suggested a relationship between dementia-ALS and frontal dysfunction. The mechanism underlying dementia-ALS remains to be solved. Our five cases resemble those reported by Mitsuyama (1993), who suggested that dementia-ALS has the same clinicopathological entity.

Aged↗

[Analysis of neuropsychological disorders coupled with 99m Tc-HMPAO Spect in amyotrophic lateral sclerosis. Prospective study of 16 cases].

A prospective psychometric study was conducted in 16 patients who recently developed classic sporadic amyotrophic lateral sclerosis and had no signs of anxiety or depression. Tests included PM38, MMS, Rey word and Rey image tests, span, Stroop test, verbal fluency, Wisconsin test and London Tower test coupled with 99m Tc HMPAO tomography. Results demonstrated that the patients had no intellectual degradation nor visual constructive disorders but had disturbed verbal and visual memory with a reduced verbal fluency (particular bulbar forms), perseverance errors on the Wisconsin test (half of the cases) and an increased number of movements in the London Tower test. These disorders were moderate with no clinical impact and variable (the neuropsycological examination was normal in 4/16 patients). 99m Tc HMPAO tomography was normal in 4 cases, showed slight rolandic hypoperfusion in 6 and extensive hypoperfusion outside the motor zone in 2. Visual analysis of the 99m Tc HMPAO images did not reveal any clinico-metabolic correlations.

Adult↗

[Anarthria, progressive apraxia and extrapyramidal syndrome: an uncommon clinical form of corticobasal degeneration? A case studied by HMPAO Tc99m single-photon emission tomography].

A 48-year-old man presented with impaired joint movement and buccofacial apraxia. The disease progressed for six years associating an akineto-hypertonic syndrome, marked anarthria, saliva incontinence, bi-opercular syndrome, bucco-facial apraxia, severe global gestual apraxia and a frontal syndrom. Oculo-motricity and gait were normal. Magnetic resonance imaging of the brain demonstrated fronto-parietal atrophy and HMPAO Tc99 tomography revealed hypoperfusion of the cortex clearly predominating in the left parietal region. These particular findings with predominantly intense joint involvement is similar to the clinical picture in corticobasal degeneration--subcortical signs (progressively uncontrollable hypertonia) together with cortical signs (severe gestual apraxia). The neuroradiological imaging and functional results also suggest a degenerative process.

Apraxias↗

[Frontal type dementia and amyotrophic lateral sclerosis. 3 cases with (HmPAO Tc99m) single-photon emission tomography study].

Three cases of rapid onset neuropsychological frontal dementia preceded the development of sporadic amyotrophic lateral sclerosis by 12 to 24 months. HmPAO Tc99m scintigraphy demonstrated hypoactivity in the cortex, predominantly in the frontal region. Three hypotheses are discussed: 1) coincidence between two degenerative diseases, Alzheimer's disease or Pick's disease and ALS; 2) an amyotrophic form of Creutzfeld Jakob disease; 3) pre-senile dementia associated with a motoneuron disease, a clinical pathology entity recently described by Mitzuyama.

Aged↗

[Paroxysmal kinesigenic choreoathetosis: autonomic disease or reflex epilepsy?].

Motor attacks induced by voluntary movements are infrequent. Paroxysmal kinesigenic choreoathetosis (PKC) is rare and has only recently been individualized (Kertesz, 1967). We report the case of an 8 year-old boy who developed unilateral or bilateral attacks of abnormal, choreoathetotic movements during certain voluntary movements, especially when rising after a rest. The attacks were short (13 to 18 seconds) and frequent. Neurological examination was normal, as were the intelligence quotient, the inter-critical and critical EEG: CT and MRI. The patient's mother had suffered from the same disorder. The attacks disappeared during treatment with phenytoin but reappeared when it was stopped. This case is concordant with data from the literature, with male predominance, age from 6 to 15 years at the onset, shortness of the attacks (less than 1 minute in 80% of the cases) and normality of investigations in almost every patient. A familial factor has been found in 50% of the cases. The frequency of epilepsy in the family is above average. PKC can easily be distinguished from Mount and Reback' syndrome where the attacks are choreoathetotic but longer and unprovoked by movements and where there is also a familial factor. The relationship of PKC with epilepsy is asserted by some authors and denied by others, and in the literature the distinction between movement-induced tonic seizures and PKC is not always clear. Some authors have blamed a disturbance in the maturation of basal ganglia. To sum up, PKC is a very rare condition which is easy to diagnose, has a good prognosis and readily responds to antiepileptic drugs.

Athetosis↗