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Journal of Neural Transmission

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https://www.readbyqxmd.com/read/29164314/cross-national-gender-variations-of-digit-ratio-2d-4d-correlate-with-life-expectancy-suicide-rate-and-other-causes-of-death
#1
Bernd Lenz, Johannes Kornhuber
The second-to-fourth finger length ratio (2D:4D) is an indication of prenatal sex hormone exposure, and has sex-specifically been associated with several lethal illnesses including ischemic heart disease, diverse cancers, and suicide. Our primary aim was to verify that 2D:4D sex-specifically relates to life expectancy and suicide numbers on a national level (23 countries). We also used a hypothesis-free approach to investigate associations with other causes of death [p value adjustment for multiple hypothesis testing using the false discovery rate procedure (FDR)]...
November 21, 2017: Journal of Neural Transmission
https://www.readbyqxmd.com/read/29159580/low-left-amygdala-volume-is-associated-with-a-longer-duration-of-unipolar-depression
#2
Maxim Zavorotnyy, Rebecca Zöllner, L R Schulte-Güstenberg, L Wulff, S Schöning, U Dannlowski, H Kugel, V Arolt, C Konrad
The amygdala plays a crucial role in the pathogenesis of major depressive disorder (MDD). While robust findings support a negative impact of illness duration on hippocampal volume in MDD, morphometric studies of the amygdala have yielded inhomogeneous results. Considering the methodical problems of automatic segmentation methods, a standardized segmentation protocol with proven inter- and intra-rater reliability was employed using high-resolution magnetic resonance imaging. To identify the effect of MDD on amygdala morphometry, 23 unipolar depressed patients who responded to antidepressant medication and 30 age-matched healthy controls (HC) were enrolled...
November 20, 2017: Journal of Neural Transmission
https://www.readbyqxmd.com/read/29147782/common-functional-variants-of-the-glutamatergic-system-in-autism-spectrum-disorder-with-high-and-low-intellectual-abilities
#3
Andreas G Chiocchetti, Afsheen Yousaf, Hannah S Bour, Denise Haslinger, Regina Waltes, Eftichia Duketis, Tomas Jarczok, Michael Sachse, Monica Biscaldi, Franziska Degenhardt, Stefan Herms, Sven Cichon, Jörg Ackermann, Ina Koch, Sabine M Klauck, Christine M Freitag
The genetic architecture underlying Autism spectrum disorder (ASD) has been suggested to differ between individuals with lower (IQ ≤ 70; LIQ) and higher intellectual abilities (IQ > 70; HIQ). Among the identified pathomechanisms, the glutamatergic signalling pathway is of specific interest in ASD. We investigated 187 common functional variants of this neurotransmitter system for association with ASD and with symptom severity in two independent samples, a German (German-ALL: N = 583 families) and the Autism Genome Project cohort (AGP-ALL: N = 2001 families), split into HIQ, and LIQ subgroups...
November 16, 2017: Journal of Neural Transmission
https://www.readbyqxmd.com/read/29143217/fluid-biomarker-agreement-and-interrelation-in-dementia-due-to-alzheimer-s-disease
#4
Panagiotis Alexopoulos, Jennifer Roesler, Lukas Werle, Nathalie Thierjung, Iliana Lentzari, Marion Ortner, Timo Grimmer, Nikolaos Laskaris, Antonios Politis, Philippos Gourzis, Alexander Kurz, Robert Perneczky
The cerebrospinal fluid (CSF) levels of β-amyloid 42, total tau, and phosphorylated tau 181 are supposed to be all continuously abnormal in dementia due to Alzheimer's disease (AD), being the most advanced disease stage. The aim of the present study, which included a monocentric and a multicentric sample (N = 119 and 178, respectively), was to investigate the degree of CSF biomarker agreement and interrelation in AD dementia. Based on previously published cut-off values, biomarker values were categorized as positive or negative for AD (dichotomization strategy) and as either positive, negative, or borderline (trichotomization strategy)...
November 15, 2017: Journal of Neural Transmission
https://www.readbyqxmd.com/read/29143216/self-perception-and-determinants-of-color-vision-in-parkinson-s-disease
#5
Alexander U Brandt, Hanna G Zimmermann, Timm Oberwahrenbrock, Justine Isensee, Thomas Müller, Friedemann Paul
Visual dysfunction is common in patients with Parkinson's disease (PD). The objective of this study was to investigate the perceived impact of visual dysfunction and especially color vision loss on PD patients, and to identify retinal and disease factors associated with color vision. Thirty PD patients and thirty-four healthy controls were included. Participants performed the Farnsworth-Munsell Hue-100 test (FMT). Patients answered the National Eye Institute Visual Function Questionnaire (NEI-VFQ), Unified Parkinson's Disease Rating Scale (UPDRS) assessment, and underwent optical coherence tomography with measurement of retinal nerve fiber layer, ganglion cell layer + inner plexiform layer (GCIPL), and outer nuclear and photoreceptor layer...
November 15, 2017: Journal of Neural Transmission
https://www.readbyqxmd.com/read/29127484/progress-in-developing-transgenic-monkey-model-for-huntington-s-disease
#6
REVIEW
Brooke R Snyder, Anthony W S Chan
Huntington's disease (HD) is a complex neurodegenerative disorder that has no cure. Although treatments can often be given to relieve symptoms, the neuropathology associated with HD cannot be stopped or reversed. HD is characterized by degeneration of the striatum and associated pathways that leads to impairment in motor and cognitive functions as well as psychiatric disturbances. Although cell and rodent models for HD exist, longitudinal study in a transgenic HD nonhuman primate (i.e., rhesus macaque; HD monkeys) shows high similarity in its progression with human patients...
November 10, 2017: Journal of Neural Transmission
https://www.readbyqxmd.com/read/29127483/high-definition-transcranial-direct-current-stimulation-of-the-dorsolateral-prefrontal-cortex-for-tinnitus-modulation-a-preliminary-trial
#7
Giriraj Singh Shekhawat, Sven Vanneste
Tinnitus is the perception of sound in the absence of its external source. Non-invasive neuromodulation techniques have been used in the past decade to investigate the impact of stimulation on tinnitus perception. The objective is to invest the impact of high-definition transcranial direct current stimulation (HD-tDCS) of dorsolateral prefrontal cortex (DLPFC) stimulation on tinnitus loudness and annoyance. Thirteen participants underwent two sessions of HD-tDCS (real and sham) in a double blind, sham controlled, randomized trial...
November 10, 2017: Journal of Neural Transmission
https://www.readbyqxmd.com/read/29124338/japanese-medicine-and-berlin-a-very-special-and-successful-relationship
#8
REVIEW
R Horowski
We describe a unique interaction between the very advanced German medicine and the ambitious Japanese medicine at the end of the 19th century and some of their protagonists. The Japanese sent some of their brightest young doctors to Germany where they not only studied medicine but also contributed to medical progress in Germany. Most went to Berlin, but before coming to Germany, in Japan they had to learn not only the German language but also German medicine as students of prominent German doctors in Japan...
November 9, 2017: Journal of Neural Transmission
https://www.readbyqxmd.com/read/29119257/risky-decision-making-and-affective-features-of-impulse-control-disorders-in-parkinson-s-disease
#9
Alice Martini, Simon J Ellis, James A Grange, Stefano Tamburin, Denise Dal Lago, Greta Vianello, Nicola M J Edelstyn
Impulse control disorders (ICDs) in Parkinson's disease (PD) are considered dopaminergic treatment side effects. Cognitive and affective factors may increase the risk of ICD in PD. The aim is to investigate risky decision-making and associated cognitive processes in PD patients with ICDs within a four-stage conceptual framework. Relationship between ICDs and affective factors was explored. Thirteen PD patients with ICD (ICD+), 12 PD patients without ICD (ICD-), and 17 healthy controls were recruited. Overall risky decision-making and negative feedback effect were examined with the Balloon Analogue Risk Task (BART)...
November 8, 2017: Journal of Neural Transmission
https://www.readbyqxmd.com/read/29116411/advanced-parkinson-s-or-complex-phase-parkinson-s-disease-re-evaluation-is-needed
#10
REVIEW
Nataliya Titova, Pablo Martinez-Martin, Elena Katunina, K Ray Chaudhuri
Holistic management of Parkinson's disease, now recognised as a combined motor and nonmotor disorder, remains a key unmet need. Such management needs relatively accurate definition of the various stages of Parkinson's from early untreated to late palliative as each stage calls for personalised therapies. Management also needs to have a robust knowledge of the progression pattern and clinical heterogeneity of the presentation of Parkinson's which may manifest in a motor dominant or nonmotor dominant manner. The "advanced" stages of Parkinson's disease qualify for advanced treatments such as with continuous infusion or stereotactic surgery yet the concept of "advanced Parkinson's disease" (APD) remains controversial in spite of growing knowledge of the natural history of the motor syndrome of PD...
November 7, 2017: Journal of Neural Transmission
https://www.readbyqxmd.com/read/29116410/botulinum-toxin-therapy-in-patients-with-oral-anticoagulation-is-it-safe
#11
Christoph Schrader, Markus Ebke, Fereshte Adib Saberi, Dirk Dressler
When used therapeutically, botulinum toxin (BT) has to be injected into its target tissues. All manufacturers warn not to do so in patients with oral anticoagulation to avoid haematoma. We wanted to study the haematoma frequency (HF) in patients with anticoagulation receiving BT therapy. 32 patients (16 females, 16 males, age 69.3 ± 10.0 years) with blepharospasm (n = 6), hemifacial spasm (n = 8), post-stroke spasticity (n = 16), and cervical dystonia (n = 2) received BT therapy (needle size 27G, post-injection tissue compression) whilst on anticoagulation (anticoagulation group, AG)...
November 7, 2017: Journal of Neural Transmission
https://www.readbyqxmd.com/read/29098451/tremor-in-multiple-sclerosis-is-associated-with-cerebello-thalamic-pathology
#12
Frederique Boonstra, Grace Florescu, Andrew Evans, Chris Steward, Peter Mitchell, Patricia Desmond, Brad Moffat, Helmut Butzkueven, Scott Kolbe, Anneke van der Walt
Tremor in people with multiple sclerosis (MS) is a frequent and debilitating symptom with a relatively poorly understood pathophysiology. To determine the relationship between clinical tremor severity and structural magnetic resonance imaging parameters. Eleven patients with clinically definite MS and right-sided upper limb tremor were studied. Tremor severity was assessed using the Bain score (overall severity, writing, and Archimedes spiral drawing). Cerebellar dysfunction was assessed using the Scale for the Assessment and Rating of Ataxia...
November 2, 2017: Journal of Neural Transmission
https://www.readbyqxmd.com/read/29082439/the-role-of-depression-pharmacogenetic-decision-support-tools-in-shared-decision-making
#13
Katarina Arandjelovic, Harris A Eyre, Eric Lenze, Ajeet B Singh, Michael Berk, Chad Bousman
Patients discontinue antidepressant medications due to lack of knowledge, unrealistic expectations, and/or unacceptable side effects. Shared decision making (SDM) invites patients to play an active role in their treatment and may indirectly improve outcomes through enhanced engagement in care, adherence to treatment, and positive expectancy of medication outcomes. We believe decisional aids, such as pharmacogenetic decision support tools (PDSTs), facilitate SDM in the clinical setting. PDSTs may likewise predict drug tolerance and efficacy, and therefore adherence and effectiveness on an individual-patient level...
October 29, 2017: Journal of Neural Transmission
https://www.readbyqxmd.com/read/29076112/reward-and-value-coding-by-dopamine-neurons-in-non-human-primates
#14
REVIEW
Aydin Alikaya, Mackenzie Rack-Wildner, William R Stauffer
Rewards are fundamental to everyday life. They confer pleasure, support learning, and mediate decisions. Dopamine-releasing neurons in the midbrain are critical for reward processing. These neurons receive input from more than 30 brain areas and send widespread projections to the basal ganglia and frontal cortex. Their phasic responses are tuned to rewards. Specifically, dopamine signals code reward prediction error, the difference between received and predicted rewards. Decades of research in awake, behaving non-human primates (NHP), have shown the importance of these neural signals for learning and decision making...
October 26, 2017: Journal of Neural Transmission
https://www.readbyqxmd.com/read/29063348/differential-contribution-of-microglia-and-monocytes-in-neurodegenerative-diseases
#15
REVIEW
Caroline Baufeld, Elaine O'Loughlin, Narghes Calcagno, Charlotte Madore, Oleg Butovsky
Neuroinflammation is a hallmark of neurodegenerative diseases including Alzheimer's disease (AD), Parkinson's disease (PD), and amyotrophic lateral sclerosis (ALS). Microglia, the innate immune cells of the CNS, are the first to react to pathological insults. However, multiple studies have also demonstrated an involvement of peripheral monocytes in several neurodegenerative diseases. Due to the different origins of these two cell types, it is important to distinguish their role and function in the development and progression of these diseases...
October 23, 2017: Journal of Neural Transmission
https://www.readbyqxmd.com/read/29058089/evidence-based-treatment-of-neurogenic-orthostatic-hypotension-and-related-symptoms
#16
REVIEW
Sabine Eschlböck, Gregor Wenning, Alessandra Fanciulli
Neurogenic orthostatic hypotension, postprandial hypotension and exercise-induced hypotension are common features of cardiovascular autonomic failure. Despite the serious impact on patient's quality of life, evidence-based guidelines for non-pharmacological and pharmacological management are lacking at present. Here, we provide a systematic review of the literature on therapeutic options for neurogenic orthostatic hypotension and related symptoms with evidence-based recommendations according to the Grading of Recommendations Assessment, Development and Evaluation (GRADE)...
October 22, 2017: Journal of Neural Transmission
https://www.readbyqxmd.com/read/29027019/explorative-results-from-multistep-screening-for-potential-genetic-risk-loci-of-alzheimer-s-disease-in-the-longitudinal-vita-study-cohort
#17
Claus-Jürgen Scholz, Heike Weber, Susanne Jungwirth, Walter Danielczyk, Andreas Reif, Karl-Heinz Tragl, Peter Fischer, Peter Riederer, Jürgen Deckert, Edna Grünblatt
Alzheimer's disease (AD) is a neurodegenerative disorder that preferentially affects individuals of advanced age. Heritability estimates for AD range between 60 and 80%, but only few genetic risk factors have been identified so far. In the present explorative study, we aimed at characterizing the genetic contribution to late-onset AD in participants of the Vienna Transdanube Aging (VITA) longitudinal birth cohort study in a two-step approach. First, we performed a genome-wide screen of pooled DNA samples (n = 588) to identify allele frequency differences between AD patients and non-AD individuals using life-time diagnoses made at the age of 80 (t = 60 months)...
October 12, 2017: Journal of Neural Transmission
https://www.readbyqxmd.com/read/29027011/let-s-make-microglia-great-again-in-neurodegenerative-disorders
#18
REVIEW
Marie-Victoire Guillot-Sestier, Terrence Town
All of the common neurodegenerative disorders-Alzheimer's disease, Parkinson's disease, amyotrophic lateral sclerosis and prion diseases-are characterized by accumulation of misfolded proteins that trigger activation of microglia; brain-resident mononuclear phagocytes. This chronic form of neuroinflammation is earmarked by increased release of myriad cytokines and chemokines in patient brains and biofluids. Microglial phagocytosis is compromised early in the disease process, obfuscating clearance of abnormal proteins...
October 12, 2017: Journal of Neural Transmission
https://www.readbyqxmd.com/read/28864907/alterations-in-the-reduced-pteridine-contents-in-the-cerebrospinal-fluids-of-lrrk2-mutation-carriers-and-patients-with-parkinson-s-disease
#19
Hiroshi Ichinose, Ken-Ichi Inoue, Shinobu Arakawa, Yuki Watanabe, Hiroki Kurosaki, Shoko Koshiba, Eldbjorg Hustad, Masahiko Takada, Jan O Aasly
Tetrahydrobiopterin (BH4) is a cofactor for tyrosine hydroxylase that is essential for the biosynthesis of dopamine. Parkinson's disease (PD) is characterized by a progressive degeneration of nigrostriatal dopaminergic neurons, and biomarkers reflecting the degree of neurodegeneration are important not only for basic research but also for clinical diagnosis and the treatment of the disease. Although the total neopterin and biopterin levels in the cerebrospinal fluids (CSF) of the patients with PD were reported, alterations in the composition of reduced and oxidized forms of pteridine compounds have not been examined...
September 1, 2017: Journal of Neural Transmission
https://www.readbyqxmd.com/read/28864885/a-systematic-meta-analysis-of-the-association-of-neuregulin-1-nrg1-d-amino-acid-oxidase-dao-and-dao-activator-daoa-g72-polymorphisms-with-schizophrenia
#20
Vinita Jagannath, Miriam Gerstenberg, Christoph U Correll, Susanne Walitza, Edna Grünblatt
The glutamate hypothesis of schizophrenia is related to the proposed dysregulation of D-amino acid oxidase (DAO), DAO activator (DAOA)/G72, and Neuregulin 1 (NRG1) genes. Genetic studies have shown significant associations between DAO, DAOA, NRG1 single-nucleotide polymorphisms (SNPs), and schizophrenia. The systematic literature search yielded 6, 5, and 18 new studies for DAO, DAOA, and NRG1 published after 2011 and not included in the previous SchizophreniaGene (SZGene) meta-analysis. We conducted meta-analyses of 20, 23, and 48 case-control studies, respectively, to comprehensively evaluate the association of 8 DAO, 12 DAOA, and 14 NRG1 SNPs with schizophrenia...
September 1, 2017: Journal of Neural Transmission
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