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https://www.readbyqxmd.com/read/29792869/preferential-inputs-from-cholecystokinin-positive-neurons-to-the-somatic-compartment-of-parvalbumin-expressing-neurons-in-the-mouse-primary-somatosensory-cortex
#1
Hiroyuki Hioki, Jaerin Sohn, Hisashi Nakamura, Shinichiro Okamoto, Jungwon Hwang, Yoko Ishida, Megumu Takahashi, Hiroshi Kameda
Parvalbumin-positive (PV+) neurons in the cerebral cortex, mostly corresponding to fast-spiking basket cells, have been implicated in higher-order brain functions and psychiatric disorders. We previously demonstrated that the somatic compartment of PV+ neurons received inhibitory inputs mainly from vasoactive intestinal polypeptide (VIP)+ neurons, whereas inhibitory inputs to the dendritic compartment were derived mostly from PV+ and somatostatin (SOM)+ neurons. However, a substantial number of the axosomatic inputs have remained unidentified...
May 21, 2018: Brain Research
https://www.readbyqxmd.com/read/29790082/chronic-administration-of-pimozide-fails-to-attenuate-motor-and-pathological-deficits-in-two-mouse-models-of-amyotrophic-lateral-sclerosis
#2
Silvia Pozzi, Sai Sampath Thammisetty, Jean-Pierre Julien
Amyotrophic lateral sclerosis (ALS) is a fatal neurodegenerative disease which presently does not have any efficient therapeutic approach. Pimozide, a Food and Drug Administration (FDA)-approved neuroepileptic drug, has been recently proposed as a promising treatment for ALS patients based on apparent stabilization of right hand muscles after a short-time administration. A new clinical trial started at the end of 2017 to recruit patients with a prolonged drug delivery schedule. Here, our aim was to investigate the effects of chronic administration of pimozide on disease progression and pathological events in two mouse models of ALS...
May 22, 2018: Neurotherapeutics: the Journal of the American Society for Experimental NeuroTherapeutics
https://www.readbyqxmd.com/read/29789375/neurotrophin-responsiveness-of-sympathetic-neurons-is-regulated-by-rapid-mobilization-of-the-p75-receptor-to-the-cell-surface-through-trka-activation-of-arf6
#3
F Edward Hickman, Emily M Stanley, Bruce D Carter
The p75 neurotrophin receptor (p75NTR) plays an integral role in patterning the sympathetic nervous system during development. Initially, p75NTR is expressed at low levels as sympathetic axons project toward their targets, which enables neurotrophin-3 (NT3) to activate TrkA receptors and promote growth. Upon reaching nerve growth factor (NGF) producing tissues, p75NTR is up regulated resulting in formation of TrkA-p75 complexes, which are high affinity binding sites selective for NGF, thereby blunting NT3 signaling...
May 22, 2018: Journal of Neuroscience: the Official Journal of the Society for Neuroscience
https://www.readbyqxmd.com/read/29789374/identification-and-characterization-of-a-novel-spontaneously-active-bursty-gabaergic-interneuron-in-the-mouse-striatum
#4
Maxime Assous, Thomas W Faust, Robert Assini, Fulva Shah, Yacouba Sidibe, James M Tepper
The recent availability of different transgenic mouse lines coupled with other modern molecular techniques has led to the discovery of an unexpectedly large cellular diversity and synaptic specificity in striatal interneuronal circuitry. Prior research has described three spontaneously active interneuron types in mouse striatal slices; the cholinergic interneuron, the neuropeptide Y-low threshold spike interneuron, and the tyrosine hydroxylase interneurons (THINs). Using transgenic Htr3a-Cre mice we now characterize a fourth population of spontaneously active striatal GABAergic interneurons termed spontaneously active bursty interneurons (SABI) because of their unique burst-firing pattern in cell-attached recordings...
May 22, 2018: Journal of Neuroscience: the Official Journal of the Society for Neuroscience
https://www.readbyqxmd.com/read/29787797/developing-neurites-from-mouse-basal-forebrain-gonadotropin-releasing-hormone-neurons-use-sonic-hedgehog-to-modulate-their-growth
#5
C L Tan, P W Sheard, C L Jasoni
Hypothalamic gonadotropin-releasing hormone (GnRH) neurons are required for fertility in all mammalian species studied to date. GnRH neuron cell bodies reside in the basal forebrain, and most extend long neurites in the caudal direction to terminate at the median eminence (ME), the site of hormone secretion. Using in vitro neurite growth assays, histological methods, and genetic deletion strategies in mice we have analysed the role of the morphogen and neurite growth and guidance molecule, Sonic hedgehog (Shh), in the growth of GnRH neurites to their target...
May 19, 2018: International Journal of Developmental Neuroscience
https://www.readbyqxmd.com/read/29786085/chronic-crh-depletion-from-gabaergic-long-range-projection-neurons-in-the-extended-amygdala-reduces-dopamine-release-and-increases-anxiety
#6
Nina Dedic, Claudia Kühne, Mira Jakovcevski, Jakob Hartmann, Andreas J Genewsky, Karina S Gomes, Elmira Anderzhanova, Max L Pöhlmann, Simon Chang, Adam Kolarz, Annette M Vogl, Julien Dine, Michael W Metzger, Bianca Schmid, Rafael C Almada, Kerry J Ressler, Carsten T Wotjak, Valery Grinevich, Alon Chen, Mathias V Schmidt, Wolfgang Wurst, Damian Refojo, Jan M Deussing
The interplay between corticotropin-releasing hormone (CRH) and the dopaminergic system has predominantly been studied in addiction and reward, while CRH-dopamine interactions in anxiety are scarcely understood. We describe a new population of CRH-expressing, GABAergic, long-range-projecting neurons in the extended amygdala that innervate the ventral tegmental area and alter anxiety following chronic CRH depletion. These neurons are part of a distinct CRH circuit that acts anxiolytically by positively modulating dopamine release...
May 21, 2018: Nature Neuroscience
https://www.readbyqxmd.com/read/29785739/in-vitro-formation-of-the-merkel-cell-neurite-complex-in-embryonic-mouse-whiskers-using-organotypic-co-cultures
#7
Kentaro Ishida, Tetsuichiro Saito, Toshiyuki Mitsui
A Merkel cell-neurite complex is a touch receptor composed of specialized epithelial cells named Merkel cells and peripheral sensory nerves in the skin. Merkel cells are found in touch-sensitive skin components including whisker follicles. The nerve fibers that innervate Merkel cells of a whisker follicle extend from the maxillary branch of the trigeminal ganglion. Whiskers as a sensory organ attribute to the complicated architecture of the Merkel cell-neurite complex, and therefore it is intriguing how the structure is formed...
May 22, 2018: Development, Growth & Differentiation
https://www.readbyqxmd.com/read/29784793/camp-inducible-coactivator-crtc3-attenuates-brown-adipose-tissue-thermogenesis
#8
Young-Sil Yoon, Wen-Wei Tsai, Sam Van de Velde, Zhijiang Chen, Kuo-Fen Lee, Donald A Morgan, Kamal Rahmouni, Shigenobu Matsumura, Ezra Wiater, Youngsup Song, Marc Montminy
In response to cold exposure, placental mammals maintain body temperature by increasing sympathetic nerve activity in brown adipose tissue (BAT). Triggering of β-adrenergic receptors on brown adipocytes stimulates thermogenesis via induction of the cAMP/PKA pathway. Although cAMP response element-binding protein (CREB) and its coactivators-the cAMP-regulated transcriptional coactivators (CRTCs)-mediate transcriptional effects of cAMP in most tissues, other transcription factors such as ATF2 appear critical for induction of thermogenic genes by cAMP in BAT...
May 21, 2018: Proceedings of the National Academy of Sciences of the United States of America
https://www.readbyqxmd.com/read/29784671/a-non-autonomous-function-of-the-core-pcp-protein-vangl2-directs-peripheral-axon-turning-in-the-developing-cochlea
#9
Satish R Ghimire, Evan M Ratzan, Michael R Deans
The cochlea is innervated by neurons that relay sound information from hair cells to central auditory targets. A subset of these are the TypeΙΙ spiral ganglion neurons which have nociceptive features and contribute to feedback circuits providing neuroprotection in extreme noise. TypeΙΙ neurons make a distinctive 90 degree turn towards the cochlear base to synapse with 10-15 outer hair cells. We demonstrate that this axon turning event requires Planar Cell Polarity (PCP) signaling, is disrupted in Vangl2 and Celsr1 knockout mice, and that VANGL2 acts non-autonomously from the cochlea to direct turning...
May 21, 2018: Development
https://www.readbyqxmd.com/read/29782610/castration-induces-satellite-cell-activation-that-contributes-to-skeletal-muscle-maintenance
#10
Alanna Klose, Wenxuan Liu, Nicole D Paris, Sophie Forman, John J Krolewski, Kent L Nastiuk, Joe V Chakkalakal
Background: Sarcopenia, the age-related loss of skeletal muscle, is a side effect of androgen deprivation therapy (ADT) for prostate cancer patients. Resident stem cells of skeletal muscle, satellite cells (SCs), are an essential source of progenitors for the growth and regeneration of skeletal muscle. Decreased androgen signaling and deficits in the number and function of SCs are features of aging. Although androgen signaling is known to regulate skeletal muscle, the cellular basis for ADT-induced exacerbation of sarcopenia is unknown...
2018: JCSM rapid communications
https://www.readbyqxmd.com/read/29782181/effectiveness-of-an-osteopathic-abdominal-manual-intervention-in-pain-thresholds-lumbopelvic-mobility-and-posture-in-women-with-chronic-functional-constipation
#11
María José Martínez-Ochoa, Juan Carlos Fernández-Domínguez, Jose Miguel Morales-Asencio, Javier González-Iglesias, François Ricard, Ángel Oliva-Pascual-Vaca
OBJECTIVES: To assess the effect of an osteopathic abdominal manual intervention (AMI) on pressure pain thresholds (PPTs), mobility, hip flexibility, and posture in women with chronic functional constipation. DESIGN: Randomized, double-blind placebo-controlled trial. SETTING/LOCATION: Subjects were recruited for the study by referral from different gastroenterology outpatient clinics in the city of Madrid (Spain). SUBJECTS: Sixty-two patients suffering from chronic functional constipation according to the guidelines of the Congress of Rome III...
May 21, 2018: Journal of Alternative and Complementary Medicine: Research on Paradigm, Practice, and Policy
https://www.readbyqxmd.com/read/29778899/dopamine-loss-alters-the-hippocampus-nucleus-accumbens-synaptic-transmission-in-the-tg2576-mouse-model-of-alzheimer-s-disease
#12
Alberto Cordella, Paraskevi Krashia, Annalisa Nobili, Annabella Pignataro, Livia La Barbera, Maria Teresa Viscomi, Alessandro Valzania, Flavio Keller, Martine Ammassari-Teule, Nicola Biagio Mercuri, Nicola Berretta, Marcello D'Amelio
The functional loop involving the ventral tegmental area (VTA), dorsal hippocampus and nucleus accumbens (NAc) plays a pivotal role in the formation of spatial memory and persistent memory traces. In particular, the dopaminergic innervation from the VTA to the hippocampus is critical for hippocampal-related memory function and alterations in the midbrain dopaminergic system are frequently reported in Alzheimer's disease (AD), contributing to age-related decline in memory and non-cognitive functions. However, much less is known about the hippocampus-NAc connectivity in AD...
May 17, 2018: Neurobiology of Disease
https://www.readbyqxmd.com/read/29778240/the-autonomic-neural-mechanism-of-right-ventricular-outflow-tract-tachycardia
#13
Hung-Yu Chang, Li-Wei Lo, Yu-Ruey Chen, Yu-Hui Chou, Wei-Lun Lin, Yenn-Jiang Lin, Wei-Hsian Yin, An-Ning Feng, Shih-Ann Chen
BACKGROUND: Ventricular tachycardia (VT) and ventricular premature complexes (VPCs) originating from the right ventricular outflow tract (RVOT) are generally considered as benign arrhythmias, with ECG morphology showing LBBB pattern and inferior axis. Pathogenic mechanisms in the genesis of RVOT VT/VPC remain largely unknown. We aimed to investigate the neural mechanism in RVOT ventricular arrhythmias in canine model. METHODS: Twelve mongrel dogs (13.7 ± 1...
July 2018: Autonomic Neuroscience: Basic & Clinical
https://www.readbyqxmd.com/read/29776424/impaired-cd8-t-cell-antiviral-immunity-following-acute-spinal-cord-injury
#14
Diana M Norden, John R Bethea, Jiu Jiang
BACKGROUND: Spinal cord injury (SCI) disrupts essential neuroimmune communication, leading to severe immune depression. Previous studies confirmed immune dysfunction in mice with chronic SCI and following high thoracic level injury where sympathetic innervation of the spleen is disrupted. Here, we induced a mid-thoracic injury where integrity of the sympathetic response is maintained and investigated the antiviral T cell response to influenza virus after acute SCI. METHODS: One week following a contusion SCI at thoracic level T9, mice were infected intranasally with influenza virus...
May 17, 2018: Journal of Neuroinflammation
https://www.readbyqxmd.com/read/29775115/immunofluorescent-localization-of-non-myelinating-schwann-cells-and-their-interactions-with-immune-cells-in-mouse-thymus
#15
Dailun Hu, Philip K Nicholls, Changfu Yin, Khama Kelman, Qionglan Yuan, Wayne K Greene, Zhongli Shi, Bin Ma
The thymus is innervated by sympathetic/parasympathetic nerve fibers from the peripheral nervous system (PNS), suggesting a neural regulation of thymic function including T-cell development. Despite some published studies, data on the innervation and nerve-immune interaction inside the thymus remain limited. In the present study, we used immunofluorescent staining of glial fibrillary acidic protein (GFAP) coupled with confocal microscopy/three-dimensional (3D) reconstruction to reveal the distribution of non-myelinating Schwann cells (NMSC) and their interactions with immune cells inside mouse thymus...
May 1, 2018: Journal of Histochemistry and Cytochemistry: Official Journal of the Histochemistry Society
https://www.readbyqxmd.com/read/29774231/semaphorin3a-signaling-is-dispensable-for-motor-axon-reinnervation-of-the-adult-neuromuscular-junction
#16
Jennifer L Shadrach, Brian A Pierchala
The neuromuscular junction (NMJ) is a specialized synapse that is formed by motor axon innervation of skeletal muscle fibers. The maintenance of motor-muscle connectivity is critical for the preservation of muscle tone and generation of movement. Injury can induce a robust regenerative response in motor axons, but severe trauma or chronic denervation resulting from neurodegenerative disease typically leads to inefficient repair and poor functional recovery. The axon guidance molecule Semaphorin3A (Sema3A) has been implicated as a negative regulator of motor innervation...
May 2018: ENeuro
https://www.readbyqxmd.com/read/29774175/motor-interconnections-between-superior-and-inferior-laryngeal-nerves
#17
Emin Gurleyik
Introduction Anatomical studies on human cadavers have established anastomoses between laryngeal nerves. However, we need to functionally identify motor communication via these anastomoses between the recurrent laryngeal nerve (RLN) and the external branch of the superior laryngeal nerve (EBSLN) in living bodies. We aim to establish motor interconnections using intraoperative nerve monitoring (IONM). Methods IONM of 112 EBSLNs and RLNs in 62 thyroidectomy cases was used to establish motor functions of laryngeal nerves...
March 16, 2018: Curēus
https://www.readbyqxmd.com/read/29773980/anatomical-inputs-from-the-sensory-and-value-structures-to-the-tail-of-the-rat-striatum
#18
Haiyan Jiang, Hyoung F Kim
The caudal region of the rodent striatum, called the tail of the striatum (TS), is a relatively small area but might have a distinct function from other striatal subregions. Recent primate studies showed that this part of the striatum has a unique function in encoding long-term value memory of visual objects for habitual behavior. This function might be due to its specific connectivity. We identified inputs to the rat TS and compared those with inputs to the dorsomedial striatum (DMS) in the same animals. The TS directly received anatomical inputs from both sensory structures and value-coding regions, but the DMS did not...
2018: Frontiers in Neuroanatomy
https://www.readbyqxmd.com/read/29773976/facing-the-challenges-of-neuropeptide-gene-knockouts-why-do-they-not-inhibit-reproduction-in-adult-teleost-fish
#19
REVIEW
Vance L Trudeau
Genetic manipulation of teleost endocrine systems started with transgenic overexpression of pituitary growth hormone. Such strategies enhance growth and reduce fertility, but the fish still breed. Genome editing using transcription activator-like effector nuclease in zebrafish and medaka has established the role of follicle stimulating hormone for gonadal development and luteinizing hormone for ovulation. Attempts to genetically manipulate the hypophysiotropic neuropeptidergic systems have been less successful...
2018: Frontiers in Neuroscience
https://www.readbyqxmd.com/read/29772691/periodontal-tissues-maxillary-jaw-bone-and-tooth-regeneration-approaches-from-animal-models-analyses-to-clinical-applications
#20
REVIEW
Fareeha Batool, Marion Strub, Catherine Petit, Isaac Maximiliano Bugueno, Fabien Bornert, François Clauss, Olivier Huck, Sabine Kuchler-Bopp, Nadia Benkirane-Jessel
This review encompasses different pre-clinical bioengineering approaches for periodontal tissues, maxillary jaw bone, and the entire tooth. Moreover, it sheds light on their potential clinical therapeutic applications in the field of regenerative medicine. Herein, the electrospinning method for the synthesis of polycaprolactone (PCL) membranes, that are capable of mimicking the extracellular matrix (ECM), has been described. Furthermore, their functionalization with cyclosporine A (CsA), bone morphogenetic protein-2 (BMP-2), or anti-inflammatory drugs' nanoreservoirs has been demonstrated to induce a localized and targeted action of these molecules after implantation in the maxillary jaw bone...
May 16, 2018: Nanomaterials
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