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Biomedical subjects

D Boisson

Publications and source records attributed to D Boisson.

At least 73 records · Page 4Linked to original sources
PubMed1982

[Contribution of lumbar puncture to the diagnosis of cephalalgia].

The authors have reviewed the records of 50 patients hospitalized for treatment of isolated cephalalgia and in whom lumbar puncture was the only investigatory procedure that initially provided some information. In 12 cases, CSF abnormalities reflected a progressive tumoral, vascular or inflammatory intracerebral lesion undetectable by the usual methods (fundus oculi, radiography of the skull, EEG), or by less common examinations (arteriography, scintiscans, CT scans). In 12 other cases, lumbar puncture provided evidence of a minimal meningeal inflammatory process. In 26 cases, the only biochemical change was an excess of CSF proteins which in 7 cases developed in a dome-shaped curve suggesting an independent disease, the significance of which is discussed.

Adult↗
PubMed1981

[Isolated tonic ambulatory flexion of the foot (author's transl)].

A tonic ambulatory foot response developed one year after clamping of an aneurysm of the contralateral carotid artery in a young adult. No motor deficiency was noted during the postoperative period, but spasm of the carotid bifurcation branches were present on arteriograms. Clinical examination and deep reflexes tests excluded pyramidal lesions. Cortical somatesthetic evoked potential recordings confirmed the absence of sensory disturbances. CT scan suggested the presence of an infarct in the territory of the anterior choroidal artery. The present findings are compared with previous reports. The etiological data and CT scan results in the present case allow reconsideration of the physiopathology of tonic ambulatory foot response in the light of current knowledge of locomotor function in animals. The tonic flexion, an "extension" dystonia of the toes, electively provoked by walking, occurring one year after the neurological accident without any pyramidal signs, could arise from a coordination synkinesis due to lesions limited to the efferent extrapyramidal system.

Adult↗
PubMed1980

[Primary postural hypotension. Physiopathological study of 8 cases (author's transl)].

Physiological tests showed that both branches of the baroreflex arc-vagal cardiomoderator and, predominantly, sympathetic vasoconstrictor--were affected. There was no rise in serum and urinary noradrenaline levels in standing position, and adrenaline concentrations were rarely increased under induced hypoglycaemia. Dopamine beta-hydroxylase activity and reactivity of the renin-angiotensin-aldosterone system remained normal in most cases. Physiopathologically, the two clinical forms described (i.e. with and without central nervous symptoms) cannot be differentiated.

Aged↗
PubMed1980

[Non-hemorrhagic forms of intracranial arterial aneurysms].

Thirty eight consecutive cases of intracranial arterial aneurysms collected during the last decade in the same department of neurology are reported, the aneurysms being revealed by a non hemorrhhagic semeiology, i.e. without clinical meningeal syndrome. In 31 cases, the aneurysm seemed to be related to the clinical manifestation: in 14 cases, it was an acute headache, characterized by its suddenness, immediate maximum intensity, spontaneous and fastly regressive course. It occurred without any symptoms (6 cases) or associated with an epileptic seizure (1 case), or an ophthalmoplegia (7 cases). The course was often relapsing. In 8 cases, it was a cerebrovascular accident of ischemic type; in 6 cases, a pseudo-tumoral syndrome; in 2 cases, an epilepsy; in 1 case, a migraine. For the further 7 cases, the aneurysm was diagnosed fortuitously when investigating a non related disease. The present series shows: the high incidence of the non hemorrhagic forms of aneurysms since they account for 40 p. 100 of the aneurysms cases detected during the same period in our neurological department. The various clinical manifestations are already well-known, mainly the acute headache and the pseudo-tumoral forms. The aneurysm-related cerebrovascular accidents seem to be relatively frequent; 2 cases of the present series give the opportunity for a discussion about the relations between a spontaneous thrombosis and a definitive anatomical cure of the aneurysm. Finally, other cases lead to suspect aneurysms as a possible cause of epilepsy or of migraine. The prognosis of these non hemorragic forms of aneurysms is much better than that of ruptured aneurysms. The direct intracranial surgical cure of the lesion gives on the whole excellent results. Such a treatment must be advocated whenever possible for any unruptured symptomatic aneurysm, as the risk of their rupture or clinical relapse is far from being negligible. The strategy is more difficult to define for asymptomatic unruptured aneurysms as the actual risk of subsequent rupture or other clinical manifestations is not sufficiently known.

Adult↗
PubMed1979

Gas-liquid chromatography of isobutyl ester, N(O)-heptafluorobutyrate derivatives of amino acids on a glass capillary column for quantitative separation in clinical biology.

A gas chromatographic method adapted to routine analysis has been developed for quantitative separation on glass capillary columns for free proteic and other known amino acids normally or abnormally found in physiological fluids. The procedure involves ion-exchange chromatography and isobutyl ester, N(O)-heptafluorobutyrate derivatization of free plasma and urine amino acid samples. Derivatized components were ascertained by combined gas chromatography-mass spectrometry. The use of glass for the capillary column is mandatory to achieve qualitative and quantitative analysis of the known occurring amino acids in urine and small plasma samples. Quantitative analysis of several types of human amino acid disorders are presented.

Amino Acid Metabolism, Inborn Errors↗
PubMed1979

[Encephalitis and acute amnesic encephalopathies. Retrospective study of 16 cases (author's transl)].

A retrospective study was conducted on sixteen cases of encephalitis or acute amnesic encephalopathies, only one of which was confirmed by pathological examination, seen over the last fifteen years. The amnesic syndrome was always associated with a very marked anterograde deficiency and the absence of severe disturbances of other higher functions. Its onset was always acute, was secondary to disturbances of consciousness or associated with epilepsy, and in half of the cases presented as a severe infections disorder with high fever. The mood and behavioural disorders, and the temporal epilepsy, were evidenced clinically as a pure or predominant hippocampic lesion. The diversity of the progressive nature of the disorders, and the etiological environmental factors, enable divison into three groups : a group of six cases of postencephalitic Korsakoff's syndrome, probably of herpetic origin, and associated with a stable amnesic syndrome which remained as a sequela ; a group of 5 patients with non-herpetic but probable viral "curable amnesic encephalitis" ; another group of 5 patients with "acute amnesic encephalopathy" with various etiologies and with obvious encephalitic lesions.

Acute Disease↗
PubMed1977

[Treatment of a case of grave orthostatic hypotension (Shy-Drager's syndrome) by an association of L-dopa and mono-amine-oxidase inhibitor (author's transl)].

The authors report a case of grave orthostatic hypotension (Shy-Drager's syndrome) with major postural disturbances. The biological test confirmed a catecholaminergic deficiency. After several drugs were tried unsucessfully, an association of L-Dopa and fractionated doses of mono-amine-oxydase inhibitor was proposed. The increase blood pressure was sufficient to block the diturbances of postural adaptation, without inducing hypertensive jerks. The functionnal result have been stable for three years, while the parkinsonian syndrome have shown little progression.

Aged↗
PubMed1976

[Proliferation of the transverse tubular system during a tardive and familial myopathy].

The authors report a case of non-progressive, late-onset, recessive, sex-linked myopathy. Electron microscopy reveals a striking proliferation of the T system. This proliferation might be interpreted as indicating an abortive attempt of muscle to regenerate, which could explain the clinical course. Some basic ultrastructural aspects concerning the T system are reported. The signification of the findings of numerous "zebra bodies" is discussed.

Adult↗
PubMed1976

[Amyotrophic lateral sclerosis occuring befor the age of 40 years. Remarks apropos of 25 cases].

Twenty-five cases of amyotrophic lateral sclerosis occurring before the age of 40, collected between 1963 and 1973 in the Neurological Hospital, Lyons, have prompted the authors to make the following observations. -The incidence of disease seems to have been on the increase during this period both in absolute terms and relatively speaking (relative to the total number of patients hospitalized and to the total number of patients hospitalized for amyotrophic lateral sclerosis after the age of forty). -The 25 cases involved mostly women--the opposite of what was found in cases of amyotrophic lateral sclerosis occurring after forty. -Only one was possibly familial. -The onset is mostly with purely pyramidal features or of the topographically circumscribed peripheral type. Development appears to take longer than the average for amyotrophic lateral sclerosis. It would be worth while confirming these findings by analysis of other similar groups.

Adult↗