Journal of Neural Transmission - Parkinson's Disease and Dementia Section最新文献_第2页

Striatal [18F]fluorodopa utilization after COMT inhibition with entacapone studied with PET in advanced Parkinson's disease. 应用PET研究晚期帕金森病患者恩他卡酮抑制COMT后纹状体[18F]氟多巴的利用。

Journal of Neural Transmission - Parkinson's Disease and Dementia Section Pub Date : 1995-01-01 DOI: 10.1007/BF02251225

H M Ruottinen, J O Rinne, U H Ruotsalainen, J R Bergman, V J Oikonen, M T Haaparanta, O H Solin, A O Laihinen, U K Rinne

{"title":"Striatal [18F]fluorodopa utilization after COMT inhibition with entacapone studied with PET in advanced Parkinson's disease.","authors":"H M Ruottinen, J O Rinne, U H Ruotsalainen, J R Bergman, V J Oikonen, M T Haaparanta, O H Solin, A O Laihinen, U K Rinne","doi":"10.1007/BF02251225","DOIUrl":"https://doi.org/10.1007/BF02251225","url":null,"abstract":"The effect of peripheral catechol-O-methyltransferase (COMT) inhibition with entacapone on striatal uptake of 6-[18F]fluoro-L-dopa (FDOPA) was studied with PET both without and with entacapone in fifteen advanced parkinsonian patients and six healthy controls. Entacapone significantly enhanced the fraction of unmetabolized FDOPA in plasma from 16% to about 50% at 80 minutes after FDOPA injection in all subjects. The striatal to occipital ratios and the striatal FDOPA uptake, expressed as a modified decarboxylation coefficient (k3R0), was significantly increased in healthy controls, whereas in parkinsonian patients the increase was significant only in the caudate. On the other hand, the influx constant (Ki) decreased significantly in the caudate and putamen in parkinsonian patients; in healthy controls the Ki remained virtually unchanged. Effective peripheral COMT inhibition markedly increased the fraction of FDOPA in plasma and thus its availability in the brain for decarboxylation both in patients and control subjects. However, the change in striatal FDOPA uptake was modest in the advanced parkinsonian patients as compared to that in control subjects, because of the advanced disease, decreased storage capacity, or both.","PeriodicalId":16466,"journal":{"name":"Journal of Neural Transmission - Parkinson's Disease and Dementia Section","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"1995-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1007/BF02251225","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"20539874","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 37

Polymorphisms of dopamine receptor and transporter genes and Parkinson's disease. 多巴胺受体和转运体基因多态性与帕金森病。

Journal of Neural Transmission - Parkinson's Disease and Dementia Section Pub Date : 1995-01-01 DOI: 10.1007/BF02251226

S Higuchi, T Muramatsu, H Arai, M Hayashida, H Sasaki, J Q Trojanowski

引用次数: 48

Antiparkinsonian actions of glutamate antagonists--alone and with L-DOPA: a review of evidence and suggestions for possible mechanisms. 谷氨酸拮抗剂的抗帕金森作用-单独和与左旋多巴:对可能机制的证据和建议的回顾。

Journal of Neural Transmission - Parkinson's Disease and Dementia Section Pub Date : 1995-01-01 DOI: 10.1007/BF02251229

M S Starr

{"title":"Antiparkinsonian actions of glutamate antagonists--alone and with L-DOPA: a review of evidence and suggestions for possible mechanisms.","authors":"M S Starr","doi":"10.1007/BF02251229","DOIUrl":"https://doi.org/10.1007/BF02251229","url":null,"abstract":"There has been much speculation of late as to whether antagonists of glutamate receptors can be used to combat the motor difficulties of Parkinson's disease, either as monotherapy, or as polytherapy to boost the effects of conventional L-DOPA treatment. The latter seems to be the more practical approach and the therapeutic implications of such treatment have been discussed in some detail. However, the mechanisms by which glutamate antagonists potentiate the antiparkinsonian actions of L-DOPA, remain cryptic. In this review we have explored the evidence and considered the practicality of using NMDA and non-NMDA receptor blockers to treat parkinsonism, as well as focusing on the ways in which the behavioural synergy between dopamine and glutamate systems could conceivably arise at the cellular level. Particular attention has been paid to the differential interaction between glutamate antagonists and postsynaptic dopamine D1 and D2 receptory mechanisms, since these are currently believed to reflect the activity of the two major basal ganglia output circuits: the so-called direct pathway to the substantia nigra and the indirect pathway to the globus pallidus. Finally, we have considered the new proposal, that inhibiting glutamate transmission in the basal ganglia accelerates the enzymic conversion of L-DOPA to dopamine at presynaptic sites.","PeriodicalId":16466,"journal":{"name":"Journal of Neural Transmission - Parkinson's Disease and Dementia Section","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"1995-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1007/BF02251229","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"20539878","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 61

Determinants of neuronal firing pattern in the guinea-pig subthalamic nucleus: an in vivo and in vitro comparison. 豚鼠丘脑下核神经元放电模式的决定因素:体内和体外比较。

Journal of Neural Transmission - Parkinson's Disease and Dementia Section Pub Date : 1995-01-01 DOI: 10.1007/BF02256628

P G Overton, S A Greenfield

引用次数: 54

Glutamatergic regulation of striatal peptide gene expression in rats. 谷氨酸能调节大鼠纹状体肽基因表达。

Journal of Neural Transmission - Parkinson's Disease and Dementia Section Pub Date : 1995-01-01 DOI: 10.1007/BF02251230

J Jolkkonen, P Jenner, C D Marsden

{"title":"Glutamatergic regulation of striatal peptide gene expression in rats.","authors":"J Jolkkonen, P Jenner, C D Marsden","doi":"10.1007/BF02251230","DOIUrl":"https://doi.org/10.1007/BF02251230","url":null,"abstract":"The mRNA levels encoding enkephalin and substance P were measured in the rat striatum following cortical ablation, blockade of N-methyl-D-aspartate (NMDA) receptors or inhibition of glutamate release by lamotrigine. Unilateral ablation of the cerebral cortex resulted in a decrease of substance P mRNA levels particularly in the rostral dorsolateral and dorsomedial striatum ipsilateral to the lesion. There was a similar trend for a reduction in levels of enkephalin mRNA. Continuous, intrastriatal infusion of the competitive NMDA receptor antagonist, 3-((+/-)-2-carboxypiperazin-4-yl)-propyl-1-phosphonic acid, (CPP, 0.12 and 1.2microg/day) decreased both enkephalin mRNA and substance P mRNA in dose-dependent manner evenly throughout the striatum adjacent to the infusion site. Following subchronic administration of the presumed glutamate release inhibitor, lamotrigine (5 and 20mg/kg IP) there was no significant alterations in either enkephalin mRNA or substance P mRNA levels in the striatum. Both enkephalin mRNA and substance P mRNA expression in the rat striatum appear tonically stimulated through postsynaptic NMDA receptor mediated mechanisms. This contrasts with differential dopaminergic modulation of peptides in striatal output neurons.","PeriodicalId":16466,"journal":{"name":"Journal of Neural Transmission - Parkinson's Disease and Dementia Section","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"1995-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1007/BF02251230","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"20539879","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 15

Alpha-1-antichymotrypsin bi-allele polymorphism, apolipoprotein-E tri-allele polymorphism and genetic risk of Alzheimer's syndrome. α -1抗凝乳胰蛋白酶双等位基因多态性、载脂蛋白e三等位基因多态性与阿尔茨海默综合征的遗传风险

Journal of Neural Transmission - Parkinson's Disease and Dementia Section Pub Date : 1995-01-01 DOI: 10.1007/BF02251232

J Thome, A Baumer, J Kornhuber, M Rösler, P Riederer

引用次数: 35

PET imaging of neocortical monoaminergic terminals in Parkinson's disease. 帕金森病新皮质单胺末端的PET成像。

Journal of Neural Transmission - Parkinson's Disease and Dementia Section Pub Date : 1995-01-01 DOI: 10.1007/BF02252963

R M Marié, L Barré, P Rioux, P Allain, B Lechevalier, J C Baron

{"title":"PET imaging of neocortical monoaminergic terminals in Parkinson's disease.","authors":"R M Marié, L Barré, P Rioux, P Allain, B Lechevalier, J C Baron","doi":"10.1007/BF02252963","DOIUrl":"https://doi.org/10.1007/BF02252963","url":null,"abstract":"Post-mortem neurochemical studies in Parkinson's disease (PD) have shown that, in addition to the typical nigro-striatal dopamine denervation, there exists a concomitant neocortical monoamine fibre deafferentation (of variable severity) whose role in motor, and especially in associated cognitive and affective impairment, remains elusive. We have extensively examined whether PET imaging with 11C-S-Nomifensine (11C-NMF), a radioligand of the dopamine and norepinephrine presynaptic reuptake sites which has been used so far to investigate the striatum, could provide a method for assessing in vivo the neocortical monoamine terminal loss in PD; previously, this has been a little addressed and controversial issue. To this end, we prospectively selected a highly homogeneous sample of nine non-demented, non-depressed idiopathic PD patients with mild to marked side-to-side asymmetry in motor impairment. In addition to recovering the previously-reported correlations with putaminal 11C-NMF specific uptake asymmetries, the clinical motor asymmetries also significantly correlated in the clinically expected direction to neocortical (especially frontal) 11C-NMF asymmetries, suggesting the monoamine neocortical denervation might play a direct role in motor impairment in PD. These results demonstrate that it is possible to assess in vivo the neocortical monoamine terminal loss, and to elucidate its potential role in the complex cognitive and affective impairment, in both PD and atypical degenerative parkinsonism.","PeriodicalId":16466,"journal":{"name":"Journal of Neural Transmission - Parkinson's Disease and Dementia Section","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"1995-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1007/BF02252963","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"18611477","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 53

Effect of age and disease duration on parkinsonian motor scores under levodopa therapy. 年龄和病程对左旋多巴治疗帕金森运动评分的影响。

Journal of Neural Transmission - Parkinson's Disease and Dementia Section Pub Date : 1995-01-01 DOI: 10.1007/BF02259659

G Ransmayr, G Künig, M Neubauer, M Wagner, M Falk

{"title":"Effect of age and disease duration on parkinsonian motor scores under levodopa therapy.","authors":"G Ransmayr, G Künig, M Neubauer, M Wagner, M Falk","doi":"10.1007/BF02259659","DOIUrl":"https://doi.org/10.1007/BF02259659","url":null,"abstract":"One hundred and fifty patients suffering from Parkinson's disease were analysed for the expression of the motor symptoms during optimum response to levodopa therapy (subscale III of the Unified-Parkinson's Disease Rating Scale). Patients were grouped according to age (< or = 64, 65-74, > or = 75 years). Disease duration and daily levodopa dosage were similar in the three groups. Pooled residual scores for posture and gait impairment (PGI), tremor (T), rigidity (R) and distal motor impairment (DMI; hand and foot movements) increased with age (Kruskal-Wallis ANOVA). The parkinsonian scores were significantly higher than the scores of 150 age-matched normal controls (Mann-Whitney U test). The differences between the patients' scores and the scores of the age-matched controls increased with age. In spite of a significant increase in the daily levodopa dosage with disease duration (linear regression), PGI aggravated age-dependently, and DMI age-independently with symptom duration (Spearman rank correlation). In contrast, T and R did not increase with disease duration.","PeriodicalId":16466,"journal":{"name":"Journal of Neural Transmission - Parkinson's Disease and Dementia Section","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"1995-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1007/BF02259659","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"19509280","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 14

CSF somatostatin increase in patients with early parkinsonian syndrome. 早期帕金森综合征患者脑脊液生长抑素升高。

Journal of Neural Transmission - Parkinson's Disease and Dementia Section Pub Date : 1995-01-01 DOI: 10.1007/BF02259660

A Espino, M Calopa, S Ambrosio, J Ortolà, J Peres, M A Navarro

{"title":"CSF somatostatin increase in patients with early parkinsonian syndrome.","authors":"A Espino, M Calopa, S Ambrosio, J Ortolà, J Peres, M A Navarro","doi":"10.1007/BF02259660","DOIUrl":"https://doi.org/10.1007/BF02259660","url":null,"abstract":"Somatostatin-like immunoreactivity levels (SLI) in cerebrospinal fluid (CSF) were determined in twenty-three patients with untreated parkinsonian syndrome (15 with Idiopathic Parkinson's disease (IPD) and 8 with other forms of parkinsonism) at the moment of clinical diagnosis (mean duration of disease 1.1 +/- 0.2 years), and in 26 subjects without neurological symptoms. None of the IPD patients had a diagnosis of dementia at the moment of inclusion in the study. CSF-SLI content was found to be significantly higher in patients with parkinsonian syndrome (107.9 +/- 9.8 pg/ml) than in control subjects (73.5 +/- 8.4 pg/ml). The increase was also significant when controls were compared with IPD patients. In addition, a positive correlation between SLI and homovanillic acid was found in CSF of all patients. A test of learning memory was used to evaluate the mental state of patients and a significant increase in CSF-somatostatin levels was observed in patients with Idiopathic Parkinson's disease and severe affectation of memory. These results indicate that in the early steps of untreated parkinsonian syndrome, somatostatin concentration in cerebrospinal fluid may increase, probably due to the neurodegenerative depletion of somatostatin from striatal or cortical neurons.","PeriodicalId":16466,"journal":{"name":"Journal of Neural Transmission - Parkinson's Disease and Dementia Section","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"1995-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1007/BF02259660","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"19509281","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 11

Free radical scavenging properties of apomorphine enantiomers and dopamine: possible implication in their mechanism of action in parkinsonism. 阿波啡对映体和多巴胺的自由基清除特性:可能与它们在帕金森病中的作用机制有关。

Journal of Neural Transmission - Parkinson's Disease and Dementia Section Pub Date : 1995-01-01 DOI: 10.1007/BF02251227

E E Sam, N Verbeke

{"title":"Free radical scavenging properties of apomorphine enantiomers and dopamine: possible implication in their mechanism of action in parkinsonism.","authors":"E E Sam, N Verbeke","doi":"10.1007/BF02251227","DOIUrl":"https://doi.org/10.1007/BF02251227","url":null,"abstract":"The influence of R(-) apomorphine, S(+) apomorphine and dopamine on the oxidation kinetics of two polyunsaturated fatty acids (PUFA) (cholesteryl linoleate (CL) and Trilinolein (TL)) was investigated. The oxidation was initiated by free radicals generated through thermal decomposition of 2.2'-Azobis(2-methyl-propionitrile) (AMPN) in phosphate buffer (pH 7.4) thermostated at 50 degrees C. The hydroperoxides formed were determined by iodine titration using a diode array spectrophotometer at 290nm. Both enantiomers of apomorphine as well as dopamine exerted an inhibitory effect. Tocopherol (alpha-tocopherol) and ascorbic acid were used as controls. The former inhibited while ascorbic acid facilitated the oxidation reaction. These results are discussed in relation with the possible role of oxidative injury in parkinsonism and the usefulness of apomorphine in elevating \"on-off\" episodes. On this basis, the non-dopaminergic enantiomer of apomorphine (S(+)-isomer) is put foward to test the importance of its radical scavenging properties in parkinsonism which could eventually lead to a therapeutic alternative with less side effects.","PeriodicalId":16466,"journal":{"name":"Journal of Neural Transmission - Parkinson's Disease and Dementia Section","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"1995-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1007/BF02251227","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"20539876","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 42