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Journal of Neural Transmission

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https://www.readbyqxmd.com/read/28213762/association-between-cognitive-impairment-and-urinary-dysfunction-in-parkinson-s-disease
#1
Zuzanna Tkaczynska, Andrea Pilotto, Sara Becker, Susanne Gräber-Sultan, Daniela Berg, Inga Liepelt-Scarfone
Urinary dysfunction (UD) is a common non-motor feature of Parkinson's disease (PD), and might be secondary to neurodegeneration involving cortical and subcortical brain areas. The possible link between UD and cognitive deficits has never been examined in frontal cortex impairment, and is still not completely understood in PD. In the present study, 94 PD patients underwent a comprehensive motor, cognitive and non-motor assessment. It was shown that 55.3% of patients reported UD, of which 17% needed specific urological treatment...
February 17, 2017: Journal of Neural Transmission
https://www.readbyqxmd.com/read/28213761/psychomotor-effect-differences-between-l-methamphetamine-and-d-methamphetamine-are-independent-of-murine-plasma-and-brain-pharmacokinetics-profiles
#2
Tetsuya Nishimura, Kazue Takahata, Yuri Kosugi, Takaaki Tanabe, Shizuko Muraoka
l-Methamphetamine has been occasionally referred to as a stimulant similar to d-methamphetamine, probably owing to insufficient comparative studies. Here, we directly compared psychomotor efficacies and pharmacokinetics of methamphetamine enantiomers in mice. Only d-methamphetamine, but not l-methamphetamine, induced stereotypy and sensitization at 1-10 mg/kg. However, plasma pharmacokinetic parameters of 10 mg/kg l-methamphetamine were ≥tenfold those of 1 mg/kg d-methamphetamine. These results clearly indicate that differential psychomotor efficacies of methamphetamine enantiomers are independent of their pharmacokinetic profiles...
February 17, 2017: Journal of Neural Transmission
https://www.readbyqxmd.com/read/28188439/the-missing-link-between-sleep-disorders-and-age-related-dementia-recent-evidence-and-plausible-mechanisms
#3
REVIEW
Feng Zhang, Rujia Zhong, Song Li, Raymond Chuen-Chung Chang, Weidong Le
Sleep disorders are among the most common clinical problems and possess a significant concern for the geriatric population. More importantly, while around 40% of elderly adults have sleep-related complaints, sleep disorders are more frequently associated with co-morbidities including age-related neurodegenerative diseases and mild cognitive impairment. Recently, increasing evidence has indicated that disturbed sleep may not only serve as the consequence of brain atrophy, but also contribute to the pathogenesis of dementia and, therefore, significantly increase dementia risk...
February 10, 2017: Journal of Neural Transmission
https://www.readbyqxmd.com/read/28176009/dopamine-and-serotonin-modulation-of-motor-and-non-motor-functions-of-the-non-human-primate-striato-pallidal-circuits-in-normal-and-pathological-states
#4
REVIEW
Véronique Sgambato-Faure, Léon Tremblay
Thanks to the non-human primate (NHP), we have shown that the pharmacological disturbance of the anterior striatum or of external globus pallidus triggers a set of motivation and movement disorders, depending on the functional subterritory involved. One can, therefore, assume that the aberrant activity of the different subterritories of basal ganglia (BG) could lead to different behavioral disorders in neuropsychiatric disorders as Tourette's syndrome and Parkinson's disease. We are now addressing in the NHP the impact of modulating dopamine or serotonin within the BG on behavioral disorders...
February 7, 2017: Journal of Neural Transmission
https://www.readbyqxmd.com/read/28176008/the-madness-of-friedrich-h%C3%A3-lderlin-an-iatrogenic-intoxication
#5
R Horowski
The German poet Hölderlin, assumed to have suffered from schizophrenia, in fact has been the victim of a combined calomel and cantharidine intoxication administered by his physician Autenrieth. This new theory explains much better his behavioural changes and also his neurological and other concomitant symptoms; it can be tested by analysing a very few of his hairs for the presence of these compounds.
February 7, 2017: Journal of Neural Transmission
https://www.readbyqxmd.com/read/28168622/alpha-synuclein-and-iron-two-keys-unlocking-parkinson-s-disease
#6
REVIEW
Paul Lingor, Eleonora Carboni, Jan Christoph Koch
Current therapies for Parkinson's disease (PD) confer symptomatic relief and are particularly efficient in the treatment of motor symptoms in earlier disease stages. However, we are still unable to treat the causes of neurodegeneration by modification of the underlying mechanisms, which is partially due to their insufficient understanding. In this short review, we focus on two pivotal disease mechanisms: alpha-synuclein pathology and dysfunction of iron homeostasis as well as their intricate interaction. Both pathomechanisms have been extensively studied in the past and represent valid targets for disease-modifying pharmacological treatment approaches for PD...
February 6, 2017: Journal of Neural Transmission
https://www.readbyqxmd.com/read/28168621/the%C3%A2-calretinin-interneurons-of-the-striatum-comparisons-between-rodents-and-primates-under-normal-and-pathological-conditions
#7
REVIEW
S Petryszyn, A Parent, Martin Parent
This paper reviews the major organizational features of calretinin interneurons in the dorsal striatum of rodents and primates, with some insights on the state of these neurons in Parkinson's disease and Huntington's chorea. The rat striatum harbors medium-sized calretinin-immunoreactive (CR(+)) interneurons, whereas the mouse striatum is pervaded by medium-sized CR(+) interneurons together with numerous small and highly immunoreactive CR(+) cells. The CR interneuronal network is even more elaborated in monkey and human striatum where, in addition to the small- and medium-sized CR(+) interneurons, a set of large CR(+) interneurons occurs...
February 6, 2017: Journal of Neural Transmission
https://www.readbyqxmd.com/read/28161754/further-characterization-of-the-glyt-1-inhibitor-org25935-anti-alcohol-neurobehavioral-and-gene-expression-effects
#8
Helga Höifödt Lidö, Susanne Jonsson, Petri Hyytiä, Mia Ericson, Bo Söderpalm
The glycine transporter-1 inhibitor Org25935 is a promising candidate in a treatment concept for alcohol use disorder targeting the glycine system. Org25935 inhibits ethanol-induced dopamine elevation in brain reward regions and reduces ethanol intake in Wistar rats. This study aimed to further characterise the compound and used ethanol consumption, behavioral measures, and gene expression as parameters to investigate the effects in Wistar rats and, as pharmacogenetic comparison, Alko-Alcohol (AA) rats. Animals were provided limited access to ethanol in a two-bottle free-choice paradigm with daily drug administration...
February 4, 2017: Journal of Neural Transmission
https://www.readbyqxmd.com/read/28160153/differential-behavioral-outcomes-following-neonatal-versus-fetal-human-retinal-pigment-epithelial-cell-striatal-implants-in-parkinsonian-rats
#9
Kaspar Russ, Joseph Flores, Tomasz Brudek, Doris J Doudet
Following the failure of a Phase II clinical study evaluating human retinal pigment epithelial (hRPE) cell implants as a potential treatment option for Parkinson's disease, speculation has centered on implant function and survival as possible contributors to the therapeutic outcomes. We recently reported that neonatal hRPE cells, similar to hRPE cells used in the Phase II clinical study, produced short-lived in vitro and limited in vivo trophic factors, which supports that assumption. We hypothesize that the switch from fetal to neonatal hRPE cells, between the Phase I and the Phase II clinical trial may be partly responsible for the later negative outcomes...
February 4, 2017: Journal of Neural Transmission
https://www.readbyqxmd.com/read/28160152/deep-brain-stimulation-for-dystonia-a-novel-perspective-on-the-value-of-genetic-testing
#10
REVIEW
H A Jinnah, Ron Alterman, Christine Klein, Joachim K Krauss, Elena Moro, Marie Vidailhet, Robert Raike
The dystonias are a group of disorders characterized by excessive muscle contractions leading to abnormal movements and postures. There are many different clinical manifestations and underlying causes. Deep brain stimulation (DBS) provides an effect treatment, but outcomes can vary considerably among the different subtypes of dystonia. Several variables are thought to contribute to this variation including age of onset and duration of dystonia, specific characteristics of the dystonic movements, location of stimulation and stimulator settings, and others...
February 3, 2017: Journal of Neural Transmission
https://www.readbyqxmd.com/read/28160151/neuromelanin-mri-is-useful-for-monitoring-motor-complications-in-parkinson-s-and-park2-disease
#11
REVIEW
Taku Hatano, Ayami Okuzumi, Koji Kamagata, Kensuke Daida, Daisuke Taniguchi, Masaaki Hori, Hiroyo Yoshino, Shigeki Aoki, Nobutaka Hattori
Parkinson's disease (PD) is caused by the loss of dopaminergic neurons. Recently, specific T1-weighted magnetic resonance imaging (MRI) at 3 Tesla was reported to visualize neuromelanin (NM)-related contrast of dopaminergic neurons. Using NM-MRI, we analyzed whether disease severity and motor complications (MC) are associated with the degree of dopaminergic neuronal degeneration in the substantia nigra pars compacta (SNc) in patients with idiopathic PD (PD) and PARK2. We examined 27 individuals with PD, 11 with PARK2, and a control group of 18...
February 3, 2017: Journal of Neural Transmission
https://www.readbyqxmd.com/read/28155134/parallel-basal-ganglia-circuits-for-decision-making
#12
REVIEW
Okihide Hikosaka, Ali Ghazizadeh, Whitney Griggs, Hidetoshi Amita
The basal ganglia control body movements, mainly, based on their values. Critical for this mechanism is dopamine neurons, which sends unpredicted value signals, mainly, to the striatum. This mechanism enables animals to change their behaviors flexibly, eventually choosing a valuable behavior. However, this may not be the best behavior, because the flexible choice is focused on recent, and, therefore, limited, experiences (i.e., short-term memories). Our old and recent studies suggest that the basal ganglia contain separate circuits that process value signals in a completely different manner...
February 2, 2017: Journal of Neural Transmission
https://www.readbyqxmd.com/read/28155133/parkinson-s-disease-as-a-multisystem-disorder
#13
Lisa Klingelhoefer, H Reichmann
This article summarises the noteworthy contribution of Professor Jellinger to the understanding of Parkinson's disease (PD) as a disease affecting multiple body- and neurotransmitter-systems. Phosphorylated alpha-synuclein and the formation of Lewy pathology as neuropathological hallmarks of PD seem to spread from the enteric nervous system and the olfactory bulb in a rostrocranial direction to the CNS. Subsequently, a progressive degeneration of the dopaminergic-nigrostriatal system and widespread extranigral pathology affecting different anatomical structures and neurotransmitters are induced causing the various non-motor and motor symptoms of PD...
February 2, 2017: Journal of Neural Transmission
https://www.readbyqxmd.com/read/28155132/-an-essay-on-the-shaking-palsy-200%C3%A2-years-old
#14
EDITORIAL
Wolfgang H Jost, Heinz Reichmann
No abstract text is available yet for this article.
February 2, 2017: Journal of Neural Transmission
https://www.readbyqxmd.com/read/28150045/epidemiology-of-parkinson-s-disease
#15
REVIEW
Ole-Bjørn Tysnes, Anette Storstein
Parkinson's disease (PD) affects 1-2 per 1000 of the population at any time. PD prevalence is increasing with age and PD affects 1% of the population above 60 years. The main neuropathological finding is α-synuclein-containing Lewy bodies and loss of dopaminergic neurons in the substantia nigra, manifesting as reduced facilitation of voluntary movements. With progression of PD, Lewy body pathology spreads to neocortical and cortical regions. PD is regarded as a movement disorder with three cardinal signs: tremor, rigidity and bradykinesia...
February 1, 2017: Journal of Neural Transmission
https://www.readbyqxmd.com/read/28130586/gene-therapy-approaches-in-the-non-human-primate-model-of-parkinson-s-disease
#16
REVIEW
D Pignataro, D Sucunza, A J Rico, I G Dopeso-Reyes, E Roda, A I Rodríguez-Perez, J L Labandeira-Garcia, V Broccoli, S Kato, K Kobayashi, José L Lanciego
The field of gene therapy has recently witnessed a number of major conceptual changes. Besides the traditional thinking that comprises the use of viral vectors for the delivery of a given therapeutic gene, a number of original approaches have been recently envisaged, focused on using vectors carrying genes to further modify basal ganglia circuits of interest. It is expected that these approaches will ultimately induce a therapeutic potential being sustained by gene-induced changes in brain circuits. Among others, at present, it is technically feasible to use viral vectors to (1) achieve a controlled release of neurotrophic factors, (2) conduct either a transient or permanent silencing of any given basal ganglia circuit of interest, (3) perform an in vivo cellular reprogramming by promoting the conversion of resident cells into dopaminergic-like neurons, and (4) improving levodopa efficacy over time by targeting aromatic L-amino acid decarboxylase...
January 27, 2017: Journal of Neural Transmission
https://www.readbyqxmd.com/read/28124161/child-regulative-temperament-as-a-mediator-of-parenting-in-the-development-of-depressive-symptoms-a-longitudinal-study-from-early-childhood-to-preadolescence
#17
Martina Pitzer, Guenter Esser, Martin H Schmidt, Erika Hohm, Tobias Banaschewski, Manfred Laucht
Child temperament as well as parenting behaviors have been linked to adolescent depression. Beyond their main effects, the interplay between these factors is of interest. For example, in an interactive model, a differential susceptibility of temperamental variants to parenting has been suggested. However, so far, the differential susceptibility hypothesis has mostly been studied with a focus on externalizing disorders. On the other hand, parenting may shape the child's temperament and vice versa in a transactional process...
January 25, 2017: Journal of Neural Transmission
https://www.readbyqxmd.com/read/28116523/chronic-oral-methylphenidate-treatment-reversibly-increases-striatal-dopamine-transporter-and-dopamine-type-1-receptor-binding-in-rats
#18
Lisa S Robison, Mala Ananth, Michael Hadjiargyrou, David E Komatsu, Panayotis K Thanos
Previously, we created an 8-h limited-access dual bottle drinking paradigm to deliver methylphenidate (MP) to rats at two dosages that result in a pharmacokinetic profile similar to patients treated for attention deficit hyperactivity disorder. Chronic treatment resulted in altered behavior, with some effects persisting beyond treatment. In the current study, adolescent male Sprague-Dawley rats were split into three groups at four weeks of age: control (water), low-dose MP (LD), and high-dose MP (HD). Briefly, 4 mg/kg (low dose; LD) or 30 mg/kg (high dose; HD) MP was consumed during the first hour, and 10 mg/kg (LD) or 60 mg/kg (HD) MP during hours two through eight...
January 23, 2017: Journal of Neural Transmission
https://www.readbyqxmd.com/read/28110352/effects-of-methylphenidate-on-attention-in-wistar-rats-treated-with-the-neurotoxin-n-2-chloroethyl-n-ethyl-2-bromobenzylamine-dsp4
#19
Joachim Hauser, Andreas Reissmann, Thomas-A Sontag, Oliver Tucha, Klaus W Lange
The aim of this study was to assess the effects of the neurotoxin N-(2-chloroethyl)-N-ethyl-2-bromobenzylamine (DSP4) on attention in rats as measured using the 5-choice-serial-reaction-time task (5CSRTT) and to investigate whether methylphenidate has effects on DSP4-treated rats. Methylphenidate is a noradrenaline and dopamine reuptake inhibitor and commonly used in the pharmacological treatment of individuals with attention deficit/hyperactivity disorder (ADHD). Wistar rats were trained in the 5CSRTT and treated with one of three doses of DSP4 or saline...
January 21, 2017: Journal of Neural Transmission
https://www.readbyqxmd.com/read/28101650/speech-disorders-in-parkinson-s-disease-early-diagnostics-and-effects-of-medication-and-brain-stimulation
#20
REVIEW
L Brabenec, J Mekyska, Z Galaz, Irena Rektorova
Hypokinetic dysarthria (HD) occurs in 90% of Parkinson's disease (PD) patients. It manifests specifically in the areas of articulation, phonation, prosody, speech fluency, and faciokinesis. We aimed to systematically review papers on HD in PD with a special focus on (1) early PD diagnosis and monitoring of the disease progression using acoustic voice and speech analysis, and (2) functional imaging studies exploring neural correlates of HD in PD, and (3) clinical studies using acoustic analysis to evaluate effects of dopaminergic medication and brain stimulation...
January 18, 2017: Journal of Neural Transmission
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