Guangyan Zhang, Lan Wang, Jing Wang, Jie Zeng, Cong Yu
Diagnosing and treating chronic orofacial pain is challenging due to its complex structure and limited understanding of its causes and mechanisms. In this study, we used RNA sequencing to identify differentially expressed genes (DEGs) in the rostral ventral medulla (RVM) and thalamus of rats with persistent orofacial pain, aiming to explore its development. DEGs were functionally analyzed using gene ontology (GO) and Kyoto Encyclopedia of Genes and Genomes (KEGG) pathway analysis. Results showed a significant association between immune response and pain in this model...
April 17, 2024: Journal of Neural Transmission
Nicholas R Harp, Tor D Wager, Hedy Kober
Substance use disorders (SUDs) are the most costly and prevalent psychiatric conditions. Recent calls emphasize a need for biomarkers-measurable, stable indicators of normal and abnormal processes and response to treatment or environmental agents-and, in particular, brain-based neuromarkers that will advance understanding of the neurobiological basis of SUDs and clinical practice. To develop neuromarkers, researchers must be grounded in evidence that a putative marker (i) is sensitive and specific to the psychological phenomenon of interest, (ii) constitutes a predictive model, and (iii) generalizes to novel observations (e...
April 17, 2024: Journal of Neural Transmission
Hideaki Matsui, Ryosuke Takahashi
Parkinson's disease (PD) is a neurodegenerative disorder characterized by progressive degeneration of dopaminergic neurons in the substantia nigra and other brain regions. A key pathological feature of PD is the abnormal accumulation of α-synuclein protein within affected neurons, manifesting as Lewy bodies and Lewy neurites. Despite extensive research efforts spanning several decades, the underlying mechanisms of PD and disease-modifying therapies remain elusive. This review provides an overview of current trends in basic research on PD...
April 13, 2024: Journal of Neural Transmission
Nils Schröter, Bastian E A Sajonz, Wolfgang H Jost, Michel Rijntjes, Volker A Coenen, Sergiu Groppa
Device aided therapies (DAT) comprising the intrajejunal administration of levodopa/carbidopa intestinal gel (LCIG) and levodopa/carbidopa/entacapone intestinal gel (LECIG), the continuous subcutaneous application of foslevodopa/foscarbidopa or apomorphine infusion (CSAI) and deep brain stimulation (DBS) are used to treat Parkinson's disease with insufficient symptom alleviation under intensified pharmacotherapy. These DAT significantly differ in their efficacy profiles, indication, invasiveness, contraindications, and potential side effects...
April 13, 2024: Journal of Neural Transmission
Cosima Rhein, Isabella Apelt, Franziska Werner, Eva Schäflein, Werner Adler, Martin Reichel, Caterina Schug, Eva Morawa, Yesim Erim
The pathophysiology of posttraumatic stress disorder (PTSD) is associated with the activation of the innate immune system, including cytokines like interleukin 6 (IL-6). However, the role of IL-6 in the etiology and treatment of PTSD still remains elusive. We conducted a prospective controlled trial to investigate the development of IL-6 during psychosomatic treatment in individuals with PTSD in comparison with individuals without PTSD. We assessed IL-6 mRNA expression before and after 2 months of psychosomatic treatment in individuals with and without PTSD...
April 13, 2024: Journal of Neural Transmission
Arwa Rekik, Carlo Santoro, Karolina Poplawska-Domaszewicz, Mubasher Ahmad Qamar, Lucia Batzu, Salvatore Landolfo, Silvia Rota, Cristian Falup-Pecurariu, Iulia Murasan, Kallol Ray Chaudhuri
Parkinson's disease (PD) has been linked to a vast array of vitamins among which vitamin B12 (Vit B12) is the most relevant and often investigated specially in the context of intrajejunal levodopa infusion therapy. Vit B12 deficiency, itself, has been reported to cause acute parkinsonism. Nevertheless, concrete mechanisms through which B12 deficiency interacts with PD in terms of pathophysiology, clinical manifestation and progression remains unclear. Recent studies have suggested that Vit B12 deficiency along with the induced hyperhomocysteinemia are correlated with specific PD phenotypes characterized with early postural instability and falls and more rapid motor progression, cognitive impairment, visual hallucinations and autonomic dysfunction...
April 11, 2024: Journal of Neural Transmission
Leonard Radu Pinosanu, Ianis Kevyn Stefan Boboc, Tudor Adrian Balseanu, Andrei Gresita, Dirk M Hermann, Aurel Popa-Wagner, Bogdan Catalin
Each year, 15 million people worldwide suffer from strokes. Consequently, researchers face increasing pressure to develop reliable behavioural tests for assessing functional recovery after a stroke. Our aim was to establish a new motor performance index that can be used to evaluate post-stroke recovery in both young and aged animals. Furthermore, we validate the proposed procedure and recommend the necessary number of animals for experimental stroke studies. Young (n = 20) and aged (n = 27) Sprague-Dawley rats were randomly assigned to receive either sham or stroke surgery...
April 10, 2024: Journal of Neural Transmission
Lubos Brabenec, Daniel Kovac, Jiri Mekyska, Lenka Rehulkova, Veronika Kabrtova, Irena Rektorova
INTRODUCTION: Hypokinetic dysarthria (HD) is a common motor speech symptom of Parkinson's disease (PD) which does not respond well to PD treatments. We investigated short-term effects of transcranial direct current stimulation (tDCS) on HD in PD using acoustic analysis of speech. Based on our previous studies we focused on stimulation of the right superior temporal gyrus (STG) - an auditory feedback area. METHODS: In 14 PD patients with HD, we applied anodal, cathodal and sham tDCS to the right STG using a cross-over design...
April 9, 2024: Journal of Neural Transmission
Peter Riederer, Etienne Hirsch, Kurt Jellinger, Regina Katzenschlager, Thomas Brücke
No abstract text is available yet for this article.
April 6, 2024: Journal of Neural Transmission
Margherita Fabbri, Vanessa Rousseau, Jean-Christophe Corvol, Agnès Sommet, Florence Tubach, Yann De Rycke, Nathalie Bertille, Yajiththa Selvarasa, Stephanie Carvalho, Véronique Chaigneau, Christine Brefel-Courbon, Fabienne Ory-Magne, Samuel Tessier, Melissa Tir, Matthieu Bereau, Wassilios G Meissner, Claire Thiriez, Ana Marques, Philippe Remy, Vincent Schneider, Elena Moro, Luc Defebvre, Jean Luc Houeto, Stephane Prange, Alexandre Eusebio, Christian Geny, Solène Frismand, Philippe Damier, Caroline Giordana Reuther, Giovanni Castelnovo, Isabelle Benatru, Anne Doe De Maindreville, Sophie Drapier, David Maltête, Ouhaid Lagha-Boukbiza, Olivier Rascol
OBJECTIVE: To assess amantadine use and associated factors in the patients with Parkinson's disease (PD). BACKGROUND: Immediate-release amantadine is approved for the treatment of PD and is largely used in clinical practice to treat "levodopa-induced dyskinesia (LIDs). Its use varies according to countries and PD stages. The prospective NS-Park cohort collects features of PD patients followed by 26 French PD Expert Centres. METHODS: Variables used for the analyses included demographics, motor and non-motor PD symptoms and motor complications [motor fluctuations (MFs), LIDs)], antiparkinsonian pharmacological classes and levodopa equivalent daily dose (LEDD)...
April 5, 2024: Journal of Neural Transmission
Merel Dagher, Myra Alayoubi, Gabriella H Sigal, Catherine M Cahill
Over 50 million Americans endure chronic pain where many do not receive adequate treatment and self-medicate to manage their pain by taking substances like opioids and cannabis. Research has shown high comorbidity between chronic pain and substance use disorders (SUD) and these disorders share many common neurobiological underpinnings, including hypodopaminergic transmission. Drugs commonly used for self-medication such as opioids and cannabis relieve emotional, bothersome components of pain as well as negative emotional affect that perpetuates misuse and increases the risk of progressing towards drug abuse...
April 3, 2024: Journal of Neural Transmission
Fahd François Hilal, Jerome Jeanblanc, Chloé Deschamps, Mickael Naassila, Olivier Pierrefiche, Sami Ben Hamida
Alcohol use disorder (AUD) is a public health issue that affects millions of people worldwide leading to physical, mental and socio-economic consequences. While current treatments for AUD have provided relief to individuals, their effectiveness on the long term is often limited, leaving a number of affected individuals without sustainable solutions. In this review, we aim to explore two emerging approaches for AUD: psychedelics and epigenetic drugs (i.e., epidrugs). By examining preclinical studies, different animal species and procedures, we delve into the potential benefits of each of these treatments in terms of addictive behaviors (alcohol drinking and seeking, motivation to drink alcohol and prevention of relapse)...
March 30, 2024: Journal of Neural Transmission
Guixiang He, Jingru Ren, Haicun Shi, Weiguo Liu, Ming Lu
Parkinson's disease (PD) is a highly heterogeneous neurodegenerative disorder with varying clinical subtypes. Recently, a novel classification called MNCD (Motor/Non-motor/Cognition/Dependency) has been proposed, which can also include staging based on disease severity. We aim to investigate which staging, the MNCD classification and staging or Hoehn and Yahr (H&Y) staging, exhibits a stronger correlation with the 39-item Parkinson's Disease Questionnaire (PDQ-39). In a cross-sectional study conducted at our single center, 357 PD patients were recruited...
March 28, 2024: Journal of Neural Transmission
Emmanuel Darcq, Brigitte L Kieffer
No abstract text is available yet for this article.
March 16, 2024: Journal of Neural Transmission
Nobutaka Hattori
No abstract text is available yet for this article.
March 16, 2024: Journal of Neural Transmission
Nobutaka Hattori, Manabu Funayama, Yuzuru Imai, Taku Hatano
Twenty-five years have passed since the causative gene for familial Parkinson's disease (PD), Parkin (now PRKN), was identified in 1998; PRKN is the most common causative gene in young-onset PD. Parkin encodes a ubiquitin-protein ligase, and Parkin is involved in mitophagy, a type of macroautophagy, in concert with PTEN-induced kinase 1 (PINK1). Both gene products are also involved in mitochondrial quality control. Among the many genetic PD-causing genes discovered, discovering PRKN as a cause of juvenile-onset PD has significantly impacted other neurodegenerative disorders...
March 13, 2024: Journal of Neural Transmission
Arif Abdulbaki, Johannes C Wöhrle, Christian Blahak, Ralf Weigel, Katja Kollewe, H Holger Capelle, Hansjörg Bäzner, Joachim K Krauss
The different peaks of somatosensory-evoked potentials (SEP) originate from a variety of anatomical sites in the central nervous system. The origin of the median nerve subcortical N18 SEP has been studied under various conditions, but the exact site of its generation is still unclear. While it has been claimed to be located in the thalamic region, other studies indicated its possible origin below the pontomedullary junction. Here, we scrutinized and compared SEP recordings from median nerve stimulation through deep brain stimulation (DBS) electrodes implanted in various subcortical targets...
March 8, 2024: Journal of Neural Transmission
Monserrat Avila-Zozaya, Venetia Zachariou
Synthetic and semi-synthetic opioids are prescribed for the management of severe pain conditions, but their long-term use is often leading to physical dependence and addiction disorders. Understanding the complex neurobiology of the opioid system in preclinical models will be essential for the development of safe and efficacious analgesics. With rising numbers of synthetic opioid users and overdose cases, a better understanding of the neuroanatomical and cellular pathways associated with physical dependence and addiction is expected to guide treatment approaches for opioid use disorders...
March 4, 2024: Journal of Neural Transmission
Shweta Prasad, Jitender Saini, Rose Dawn Bharath, Pramod Kumar Pal
Tremor dominant Parkinson's disease (TDPD) and essential tremor plus (ETP) syndrome are commonly encountered tremor dominant neurological disorders. Although the basal ganglia thalamocortical (BGTC) and cerebello thalamocortical (CTC) networks are implicated in tremorogenesis, the extent of functional connectivity alterations across disorders is uncertain. This study aims to evaluate functional connectivity of the BGTC and CTC in TDPD and ETP. Resting state functional MRI was acquired for 25 patients with TDPD, ETP and 22 healthy controls (HC)...
March 2, 2024: Journal of Neural Transmission
André Wannemueller, Jürgen Margraf, Martin Busch, Hans-Peter Jöhren, Boris Suchan
Hyperactivation of brain networks conferring defensive mobilization is assumed to underlie inappropriate defensive-preparation in patients with Specific Phobia. However, studies targeting Dental Phobia (DP) yielded quite heterogeneous results and research concerning the effects of exposure treatments on phobic brain activation so far is missing. This functional Magnetic Resonance Imaging (fMRI) study aimed to investigate activation patterns in DP patients during exposure to phobia-related stimuli and the effects of an exposure-based fear treatment on phobia-related activation...
March 1, 2024: Journal of Neural Transmission
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