M Chritin

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The present study was undertaken to examine the adaptive changes occurring 1 and 6 months after moderate or severe unilateral 6-hydroxydopamine-induced lesions confined to the lateral part of the rat substantia nigra pars compacta (SNC). The expression of tyrosine hydroxylase (TH) enzyme was analyzed in the remaining dopaminergic nigral cell bodies and in(More)
The aim of the present study was to test whether intrastriatal implants of embryonic dopaminergic neurons are able to normalize the lesion-induced hypersensitivity of striatal dopaminergic receptors. The ascending dopaminergic pathway of adult rats was unilaterally lesioned using 6-hydroxydopamine. Three weeks later a cell suspension obtained from the(More)
Stereotaxic injection of a limited amount of 6-hydroxydopamine in the lateral part of the rat substantia nigra induces a partial degeneration of the nigrostriatal dopaminergic system. This animal model in which the destruction of the dopaminergic nigral cell population reaches approximately 50% could be considered as a preclinical Parkinson's model.(More)
Unilateral 6-hydroxydopamine (6-OHDA)-induced lesion of the nigrostriatal dopamine (DA) pathway causes a significant increase of preproenkephalin (PPE) messenger RNA (mRNA) levels in the DA-depleted striatum in rat brain. Using an in situ hybridization (ISH) technique and computer-assisted microdensitometry, we quantified the changes in PPE mRNA levels in(More)
Amyotrophic lateral sclerosis (ALS) is a progressive neurodegenerative disease which affects cortical, bulbar and spinal motoneurones. The cause of the disease, probably due to several factors, is still unknown and the survival delay of patients with ALS generally does not exceed 3-5 years. Animals models provide a unique opportunity to study pathological(More)
We have reported previously that axotomy induced a marked increase of vasopressin receptor binding in the adult rat facial nucleus, suggesting an increased number of vasopressin receptors. These receptors were pharmacologically undistinguishable from peripheral V(1a) vasopressin receptors. In the present study, we show, using in situ hybridization and(More)
The ascending dopaminergic pathway of 3-day-old rats has been unilaterally destroyed by the injection of 6-hydroxydopamine into the lateral hypothalamus. Five days later, a suspension containing embryonic dopaminergic neurones was injected in the lesioned neostriatum. Rotational responses to dopaminergic agonists were tested eight months after grafting and(More)
Changes in striatal dopamine uptake sites, D2 receptor and preproenkephalin (PPE) mRNA levels provoked by unilateral 6-hydroxydopamine-induced lesion of the nigrostriatal dopaminergic (DA) pathway were studied by quantitative autoradiography and in situ hybridization (ISH) in rats sacrificed at different post-lesion delays. The disappearance of DA terminals(More)
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