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Biomedical subjects

F Durif

Publications and source records attributed to F Durif.

47 records · Page 3Linked to original sources
PubMed1992

Relationship between levodopa-independent symptoms and central atrophy evaluated by magnetic resonance imaging in Parkinson's disease.

Thirty patients with Parkinson's disease were studied for the purpose of investigation relations between motor symptoms and cerebral atrophy evaluated by magnetic resonance imaging (MRI). Axial symptoms (gait disorder, postural instability and difficulty in arising from a chair), assessed at the time of maximum clinical improvement, were significantly correlated with frontal atrophy, while no correlation was found between the basal parkinsonian disability score and cerebral atrophy. It is suggested that frontal atrophy observed by MRI is linked with axial motor symptoms resulting from non-dopaminergic lesions. The origin of this atrophy is unknown.

Aged↗
PubMed1992

[Sublingual administration of apomorphine in the treatment of motor fluctuations in Parkinson disease].

Apomorphine, a mixed dopaminergic agonist was given sublingually to 12 patients with Parkinson's disease disabled by severe on-off fluctuations. The patient's mean age was 57 years and the duration of Parkinson's disease was 12 years. All patients were also given domperidone (60 mg/day). Apomorphine was administered as soon as the off periods appeared. On periods were observed in 11 patients, with a mean apomorphine dose of 40 mg for each administration (extremes values: 20-60 mg). One patient had no motor benefit after an apomorphine dose of 120 mg. The mean duration of daily off periods was reduced by 64 per cent in 11 patients, for a mean duration of 8 months (extremes values: 2-12 months). Four patients developed stomatitis or gingival edema and stopped treatment. This pilot study shows that sublingual apomorphine, during a mean period of 8 months, significantly decreases off periods in parkinsonian patients. Others studies are necessary to confirm these results.

Administration, Sublingual↗
PubMed1991

Relation between plasma concentration and clinical efficacy after sublingual single dose apomorphine in Parkinson's disease.

Five patients with Parkinson's disease were given a single sublingual dose of apomorphine in 3 mg tablets (2 patients received 18 mg and 3 patients took 39 mg). The therapeutic effect appeared within 33.0 min and lasted 137 min. There was a significant correlation between peak concentration, area under the curve, dose (mg/kg) and the duration of the therapeutic effect.

Administration, Sublingual↗
PubMed1989

Antinociceptive activity of salsolinol (racemate, R(+)-, S(-)-enantiomers): evidence of a peripheral mechanism.

The existence and the characteristics of the antinociceptive action of salsolinol (racemate) and its two R(+)- and S(-)-enantiomers were studied using different pain tests in mice. None of these drugs possessed a significant activity on the tests sensitive to central acting analgesics (hot-plate and tail-flick tests), either after systemic (i.p.) or central (i.c.v.) injections. However, injected i.p., they reduced the number of writhes induced by phenylbenzoquinone; the ED50 was 79 +/- 2, 73 +/- 2 and 61 +/- 2 mg/kg for racemate, R(+)- and S(-)-enantiomer respectively. This activity was not antagonized by naloxone. Moreover, racemate and S(-) reduced, only for the highest used active dose on the PBQ test (128 mg/kg, i.p.), the edema induced by an intraplantar injection of carrageenin. These results provide evidence of an analgesic activity independent of the endogenous opiate systems and involving a peripheral mechanism.

Analgesia↗
PubMed1989

Magnetic resonance imaging in ischaemic accidents of the brain stem.

Seven cases of ischaemic accident affecting the brain stem are reported. There were two lacunar infarctions and five infarctions due to occlusion of major arteries (two lateral medullary infarctions, one pontine infarction and two thalamo-mesencephalic infarctions). In every case the abnormalities detected at MRI were concordant with the clinical findings. The authors underline the value of MRI in establishing clinico-topographic correlations in vivo and in differentiating lacunar infarctions from infarctions due to stenosis of major arteries in the vertebro-basilar system.

Aged↗
PubMedDate not supplied

[Salsolinol, an endogenous molecule. Possible implications in alcoholism, Parkinson's disease and pain].

Salsolinol can be formed either by condensation of dopamine with acetaldehyde, or by condensation of dopamine with pyruvic acid followed by decarboxylation. Salsolinol has a complex pharmacologic profile. Its opium-like activity may be related to alcohol dependency and to the effectiveness of naloxone during acute alcohol intoxication. Because they had noticed that alcoholism and Parkinson's disease rarely coexist, the authors undertook a study to confirm this fact and attempt to explain it by implicating salsolinol. Urinary excretion of salsolinol was found to increase following ingestion of alcohol, as well as in Parkinson patients under L-dopa treatment. The authors also found that urinary salsolinol was very low in untreated patients with Parkinson's disease. Salsolinol was detected in a number of foods and beverages. Separate assays of enantiomeres showed that the S enantiomere predominates in some foods whereas the R enantiomere is more abundant in humans. Lastly, the antinociceptive effects of salsolinol and its enantiomeres were studied in mice and antidepressant effects were evidenced using predictive tests.

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