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Journal of Chemical Neuroanatomy

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https://www.readbyqxmd.com/read/28093241/new-isatin-derivative-inhibits-neurodegeneration-by-restoring-insulin-signaling-in-brain
#1
Meha Fatima Aftab, Shabbir Khan Afridi, Uzma Rasool Mughal, Aneela Karim, Darakhshan Jabeen Haleem, Nurul Kabir, Khalid M Khan, Rahman M Hafizur, Rizwana S Waraich
Diabetes is associated with neurodegeneration. Glycation ensues in diabetes and glycated proteins cause insulin resistance in brain resulting in amyloid plaques and NFTs. Also glycation enhances gliosis by promoting neuroinflammation. Currently there is no therapy available to target neurodegenration in brain therefore, development of new therapy that offers neuroprotection is critical. The objective of this study was to evaluate mechanistic effect of isatin derivative URM-II-81, an anti-glycation agent for improvement of insulin action in brain and inhibition of neurodegenration...
January 13, 2017: Journal of Chemical Neuroanatomy
https://www.readbyqxmd.com/read/28027905/notochord-isolation-using-laser-capture-microdissection
#2
R G C Santegoeds, Y Yakkioui, A Jahanshahi, G Raven, J J Van Overbeeke, A Herrler, Y Temel
BACKGROUND: Chordoma are malignant tumors of the axial skeleton, which arise from remnants of the notochord. The Notochord (chorda dorsalis) is an essential embryonic structure involved in the development of the nervous system and axial skeleton. Therefore, the notochord seems to be the most appropriate control tissue in chordoma molecular biology research. Nevertheless, up to now mainly different tissues but not the notochord have been used as control for chordoma, due to difficulty of isolating notochordal tissue...
December 24, 2016: Journal of Chemical Neuroanatomy
https://www.readbyqxmd.com/read/28017803/ca-2-dependent-surface-trafficking-of-norepinephrine-transporters-depends-on-threonine-30-and-ca-2-calmodulin-kinases
#3
Uhna Sung, Francesca Binda, Valentina Savchenko, William A Owens, Lynette C Daws
The antidepressant-sensitive norepinephrine (NE) transporter (NET) inactivates NE released during central and peripheral neuronal activity by transport into presynaptic cells. Altered NE clearance due to dysfunction of NET has been associated with the development of mental illness and cardiovascular diseases. NET activity in vivo is influenced by stress, neuronal activity, hormones and drugs. We investigated the mechanisms of Ca(2+) regulation of NET and found that Ca(2+) influenced both Vmax and Km for NE transport into cortical synaptosomes...
December 23, 2016: Journal of Chemical Neuroanatomy
https://www.readbyqxmd.com/read/28007551/a-preliminary-investigation-of-phoshodiesterase-7-inhibitor-vp3-15-as-therapeutic-agent-for-the-treatment-of-experimental-autoimmune-encephalomyelitis-mice
#4
R Martín-Álvarez, N Paúl-Fernández, V Palomo, C Gil, A Martínez, G Mengod
cAMP plays a significant role in signal transduction pathways controlling multiple cellular processes such as inflammation and immune regulation. cAMP levels are regulated by a family of phosphodiesterases (PDEs). We have studied the effects of a novel PDE7 inhibitor (PDE7i) treatment on mice with experimental autoimmune encephalomyelitis (EAE) a model of multiple sclerosis (MS) and compared it with another PDE7i. EAE was induced by immunizing C57BL/6J mice with myelin oligodendrocyte glycoprotein (MOG35-55) peptide...
December 19, 2016: Journal of Chemical Neuroanatomy
https://www.readbyqxmd.com/read/27988177/unbiased-estimation-of-cell-number-using-the-automatic-optical-fractionator
#5
Peter R Mouton, Hady Ahmady Phoulady, Dmitry Goldgof, Lawrence O Hall, Marcia Gordon, David Morgan
A novel stereology approach, the automatic optical fractionator, is presented for obtaining unbiased and efficient estimates of the number of cells in tissue sections. Used in combination with existing segmentation algorithms and ordinary immunostaining methods, automatic estimates of cell number are obtainable from extended depth of field images built from three-dimensional volumes of tissue (disector stacks). The automatic optical fractionator is more accurate, 100% objective and 8-10 times faster than the manual optical fractionator...
December 14, 2016: Journal of Chemical Neuroanatomy
https://www.readbyqxmd.com/read/27919828/mucuna-pruriens-reduces-inducible-nitric-oxide-synthase-expression-in-parkinsonian-mice-model
#6
Satyndra Kumar Yadav, Sachchida Nand Rai, Surya Pratap Singh
Parkinson's disease is one of the most common neurodegenerative disease found in aged peoples. Plentiful studies are being conducted to find a suitable and effective cure for this disease giving special impetus on use of herbal plants. The study aimed at investigating the effect of ethanolic extract of Mucuna pruriens (Mp) on level of nitric oxide (NO) in paraquat (PQ) induced Parkinson's disease (PD) mouse model and its subsequent contribution to lipid peroxidation. Twenty four Swiss albino mice were divided into three groups; Control, PQ and PQ+Mp...
December 2, 2016: Journal of Chemical Neuroanatomy
https://www.readbyqxmd.com/read/27914953/both-secreted-and-the-cellular-levels-of-bdnf-attenuated-due-to-tau-hyperphosphorylation-in-primary-cultures-of-cortical-neurons
#7
İrem Lütfiye Atasoy, Erdinç Dursun, Duygu Gezen-Ak, Derya Metin-Armağan, Melek Öztürk, Selma Yılmazer
Intracellular aggregation of hyperphosphorylated tau in neurofibrillary tangles (NFTs) is a major neuropathological hallmark of taupathies such as Alzheimer's disease. Okadaic acid (OKA) is a potent inhibitor of PP2A, leading to abnormal tau phosphorylation. Brain-derived neurotrophic factor (BDNF) is a neurotrophin that is selectively downregulated in AD. In this study, we investigated the effects of OKA induced tau hyperphosphorylation on secreted and cellular levels of BDNF in primary cortical neurons that were treated with 25nM OKA...
November 30, 2016: Journal of Chemical Neuroanatomy
https://www.readbyqxmd.com/read/27913184/tolerance-of-hyperammonemia-in-brain-of-heteropneustes-fossilis-is-supported-by-glutamate-glutamine-cycle
#8
Suman Mishra, Rajnikant Mishra
This report presents analysis of molecular switches associated with tolerance to hyperammonemia in Heteropneustes fossilis because it tolerates about 100-fold more ammonia than mammals. Brains of Heteropneustes fossilis exposed to 100mM ammonium chloride were dissected after Zero hour as control, 16h and 20h exposure. The status of neuron and glia were analysed by Golgi staining, Luxol Fast Blue, and Nissl's staining. The expression patterns of genes associated to homeostasis of neuron and glia, management of oxidative stress and inflammation, ammonia metabolism and brain derived neurotrophic factor were analysed through reverse-transcriptase-polymerase chain reaction...
November 29, 2016: Journal of Chemical Neuroanatomy
https://www.readbyqxmd.com/read/27836486/immunochemical-localization-of-vesicular-monoamine-transporter-2-vmat2-in-mouse-brain
#9
Rachel A Cliburn, Amy R Dunn, Kristen A Stout, Carlie A Hoffman, Kelly M Lohr, Alison I Bernstein, Emily J Winokur, James Burkett, Yvonne Schmitz, William M Caudle, Gary W Miller
Vesicular monoamine transporter 2 (VMAT2, SLC18A2) is a transmembrane transporter protein that packages dopamine, serotonin, norepinephrine, and histamine into vesicles in preparation for neurotransmitter release from the presynaptic neuron. VMAT2 function and related vesicle dynamics have been linked to susceptibility to oxidative stress, exogenous toxicants, and Parkinson's disease. To address a recent depletion of commonly used antibodies to VMAT2, we generated and characterized a novel rabbit polyclonal antibody generated against a 19 amino acid epitope corresponding to an antigenic sequence within the C-terminal tail of mouse VMAT2...
November 9, 2016: Journal of Chemical Neuroanatomy
https://www.readbyqxmd.com/read/27836487/phosphorylation-mechanisms-in-dopamine-transporter-regulation
#10
REVIEW
James D Foster, Roxanne A Vaughan
The dopamine transporter (DAT) is a plasma membrane phosphoprotein that actively translocates extracellular dopamine (DA) into presynaptic neurons. The transporter is the primary mechanism for control of DA levels and subsequent neurotransmission, and is the target for abused and therapeutic drugs that exert their effects by suppressing reuptake. The transport capacity of DAT is acutely regulated by signaling systems and drug exposure, providing neurons the ability to fine-tune DA clearance in response to specific conditions...
November 8, 2016: Journal of Chemical Neuroanatomy
https://www.readbyqxmd.com/read/27908658/cocaine-and-amphetamine-regulated-transcript-peptide-and-calcium-binding-proteins-immunoreactivity-in-the-superficial-layers-of-the-superior-colliculus-in-the-guinea-pig-implications-for-visual-sensory-processing
#11
Janusz Najdzion
The purpose of this study was to investigate the distribution and colocalization of cocaine- and amphetamine-regulated transcript peptide (CART) and three calcium-binding proteins (calbindin, calretinin and parvalbumin) in the superficial layers of the superior colliculus (SCs) in the guinea pig. The CART immunoreactivity was observed exclusively in the solitary fibers and neuropil, which formed various CART-ir tiers, that corresponded partially or entirely to anatomically defined layers of the SCs. The CART-ir structures exhibited a characteristic morphology with bundles of densely intermingled neuronal fibers and terminals...
January 2017: Journal of Chemical Neuroanatomy
https://www.readbyqxmd.com/read/27871948/vestibular-cerebellum-of-thick-toed-geckos-chondrodactylus-turnery-gray-1864-and-c57-bl6n-mice-after-the-long-term-space-flight-on-the-biosatellite-bion-m1
#12
Proshchina Alexandra, Kharlamova Anastasia, Barabanov Valeriy, Gulimova Victoria, Saveliev Sergey
The aim of this study was to estimate the effects of long-term space flights on neuronal and glial cells of the vestibular cerebellum of C57/BL6N mice and thick-toed geckos (Chondrodactylus turnery GRAY, 1864). The cerebella from 26 mice and 13 geckos were used in this study. Ten mice and five geckos were flown aboard the BION-M1 biosatellite. The other animals were used as controls. We used immunohistochemical techniques and classical histological method to reveal cell types in the vestibular cerebellum. Nonspecific pathomorphological changes in the Purkinje cells (such as chromatolysis, vacuolization and hyperchromatosis) were observed in the flight groups...
January 2017: Journal of Chemical Neuroanatomy
https://www.readbyqxmd.com/read/27865908/oleic-acid-promotes-the-expression-of-neural-markers-in-differentiated-human-endometrial-stem-cells
#13
Maryam Ali Mohammadie Kojour, Somayeh Ebrahimi-Barough, Homa Mohseni Kouchesfehani, Hanieh Jalali, Mohammah Hosein Karbalaie Ebrahim
Variety of neurodegenerative diseases in humans are caused by loss of cells along with loss of function and disability. Cell replacement therapy is a potential strategy to cure neurodegenerative diseases. Mesenchymal stem cells are pluripotent non-hematopoietic cells that can be isolated from numerous tissues. Human endometrial-derived stem cell (hEnSC) are the abundant and easy available source with no immunological response, for cell replacement therapy. In the nervous system, where fatty acids are found in huge amounts, they participate in its development and maintenance throughout life...
January 2017: Journal of Chemical Neuroanatomy
https://www.readbyqxmd.com/read/27865907/differential-regulation-of-glial-reactions-in-the-central-facial-tract-and-the-facial-nucleus-after-facial-neurorrhaphy
#14
Tzu-Yin Yeh, Shang-Ming Wang, Guo-Fang Tseng, Pei-Hsin Liu
We previously reported that perineuronal astrocytic and microglial reactions are drastically upregulated in the facial nucleus after facial axotomy at the brain stem surface or the stylomastoid foramen. Furthermore, periaxonal astrocytic and microglial reactions develop retrogradely in the central facial tract which contains proximal facial axons in the brain stem. Because reconnection of interrupted peripheral nerve by microsurgical suture is a common clinical practice, the aim of this study was to investigate the spatiotemporal patterns of glial reactions in the central facial tract and the facial nucleus after facial neurorrhaphy...
January 2017: Journal of Chemical Neuroanatomy
https://www.readbyqxmd.com/read/27826038/expression-of-glial-cbp-in-steroid-mediated-neuroprotection-in-male-and-female-zebra-finches
#15
Molly Klores, John T Moon, Kelli A Duncan
Under neurodegenerative conditions, reactive astrocytes upregulate both aromatase (estrogen synthase) as well as estrogen and androgen receptors. This increased steroidogenic signal promotes neuroprotection and repair by promoting neurogenesis and decreasing cell death, but also by modulating the release of inflammatory molecules. Thus, endocrine - immune cross-talk is an essential component of estrogen mediated neuroprotection following brain injury. However, the exact mechanisms underlying this cross-talk remains unknown...
January 2017: Journal of Chemical Neuroanatomy
https://www.readbyqxmd.com/read/27773630/distribution-and-sub-types-of-afferent-fibre-in-the-mouse-urinary-bladder
#16
M S Rahnama'i, B T Biallosterski, Ph E V Van Kerrebroeck, G A van Koeveringe, J I Gillespie, S G de Wachter
AIM: Increased afferent fibre activity contributes to pathological conditions such as the overactive bladder syndrome. Nerve fibres running near the urothelium are considered to be afferent as no efferent system has yet been described. The aim of this study was to identify sub-types of afferent nerve fibres in the mouse bladder wall based on morphological criteria and analyse regional differences. MATERIALS AND METHODS: 27 bladders of six month old C57BL/6 mice were removed and tissues were processed for immunohistochemistry...
January 2017: Journal of Chemical Neuroanatomy
https://www.readbyqxmd.com/read/27771351/the-ontogenetic-development-of-neurons-containing-calcium-binding-proteins-in-the-septum-of-the-guinea-pig-late-onset-of-parvalbumin-immunoreactivity-versus-calbindin-and-calretinin
#17
Beata Hermanowicz-Sobieraj, Anna Robak
The study describes the immunoreactivity of calbindin (CB), calretinin (CR) and parvalbumin (PV), their distribution pattern and the co-distribution of CB and CR as well as CB and PV in the septum of the guinea pig during development. Immunohistochemistry was conducted on embryonic (E40, E50, E60), newborn (P0) and postnatal (P5, P10, P20, P40, P100) guinea pig brains. The presence of both CB and CR was detected at E40, while PV began to be observed at E60. Immunoreactivity for CB was constant throughout ontogeny...
January 2017: Journal of Chemical Neuroanatomy
https://www.readbyqxmd.com/read/27771350/synaptotagmin-7-and-syncrip-proteins-are-ubiquitously-expressed-in-the-rat-brain-and-co-localize-in-purkinje-neurons
#18
Larisa Tratnjek, Marko Živin, Gordana Glavan
Synaptotagmin 7 (SYT7) is ubiquitously expressed calcium sensor, involved in neuronal membrane trafficking. Immunoprecipitation experiments demonstrated that SYT7 interacts with Synaptotagmin-binding, cytoplasmic RNA-interacting protein (SYNCRIP). SYNCRIP is a component of mRNA granules, which are transported to dendrites and are prerequisite for synaptic plasticity. Given the potential significance of SYT7 regulation in processes of neurodegeneration, which are characterized by high level of synaptic vulnerability, we aimed to analyse and compare the distribution of SYT7 and SYNCRIP proteins in the adult rat striatum, hippocampus, cerebral and cerebellar cortex...
January 2017: Journal of Chemical Neuroanatomy
https://www.readbyqxmd.com/read/27650207/adverse-effects-in-lumbar-spinal-cord-morphology-and-tissue-biochemistry-in-sprague-dawley-male-rats-following-exposure-to-a-continuous-1-h-a-day-900-mhz-electromagnetic-field-throughout-adolescence
#19
Gökçen Kerimoğlu, Ali Aslan, Orhan Baş, Serdar Çolakoğlu, Ersan Odacı
Cell phones, an indispensable element of daily life, are today used at almost addictive levels by adolescents. Adolescents are therefore becoming increasingly exposed to the effect of the electromagnetic field (EMF) emitted by cell phones. The purpose of this study was to investigate the effect of exposure to a 900-MHz EMF throughout adolescence on the lumbar spinal cord using histopathological, immunohistochemical and biochemical techniques. Twenty-four Sprague Dawley (28.3-43.9g) aged 21days were included in the study...
December 2016: Journal of Chemical Neuroanatomy
https://www.readbyqxmd.com/read/27650206/tyrosine-hydroxylase-immunoreactivity-and-its-relations-with-gonadotropin-releasing-hormone-and-neuropeptide-y-in-the-preoptic-area-of-the-guinea-pig
#20
Krystyna Bogus-Nowakowska, Maciej Równiak, Beata Hermanowicz-Sobieraj, Barbara Wasilewska, Janusz Najdzion, Anna Robak
The present study examines the distribution of tyrosine hydroxylase (TH) immunoreactivity and its morphological relationships with neuropeptide Y (NPY)- and gonadoliberin (GnRH)-immunoreactive (IR) structures in the preoptic area (POA) of the male guinea pig. Tyrosine hydroxylase was expressed in relatively small population of perikarya and they were mostly observed in the periventricular preoptic nucleus and medial preoptic area. The tyrosine hydroxylase-immunoreactive (TH-IR) fibers were dispersed troughout the whole POA...
December 2016: Journal of Chemical Neuroanatomy
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