keyword
MENU ▼
Read by QxMD icon Read
search

dendrite morphology

keyword
https://www.readbyqxmd.com/read/29688328/ethanol-exposure-in-utero-disrupts-radial-migration-and-pyramidal-cell-development-in-the-somatosensory-cortex
#1
Laurie C Delatour, Pamela W Yeh, Hermes H Yeh
Deficits in sensory processing in Fetal Alcohol Spectrum Disorders (FASD) implicate dysfunction in the somatosensory cortex. However, the effects of prenatal ethanol exposure on the development of this region await elucidation. Here, we used an established mouse model of FASD with binge-type ethanol exposure from embryonic day 13.5-16.5 to investigate the effects of prenatal ethanol exposure on pyramidal neurons in the somatosensory cortex. Specifically, we focused on the radial migration of primordial pyramidal neurons during embryonic corticogenesis and their morphology and function during active synaptogenesis in early postnatal development...
April 24, 2018: Cerebral Cortex
https://www.readbyqxmd.com/read/29683532/cytologic-diagnosis-of-follicular-dendritic-cell-sarcoma-a-case-report-and-review-of-literature
#2
Anupurva Dutta, Arun Pattatheyil, Paromita Roy, Indu Arun
Follicular dendritic cell sarcoma (FDCS) is a rare neoplasm of the accessory immune cells that can present at both nodal and extranodal sites1 . A high index of suspicion is crucial so as to include FDCS in the differential diagnosis of a spindle cell neoplasm in the appropriate clinical and morphological context. However, the morphological overlap with other tumors makes this entity a diagnostic challenge unless supplemented by other ancillary tests like immunohistochemistry and ultrastructural studies. This article is protected by copyright...
April 23, 2018: Cytopathology: Official Journal of the British Society for Clinical Cytology
https://www.readbyqxmd.com/read/29682634/commentary-mir-132-212-modulates-seasonal-adaptation-and-dendritic-morphology-of-the-central-circadian-clock
#3
Lucia Mendoza-Viveros, Karl Obrietan, Hai-Ying M Cheng
Daily rhythms in behavior and physiology are coordinated by an endogenous clock located in the suprachiasmatic nucleus (SCN) of the hypothalamus. This central pacemaker also relays day length information to allow for seasonal adaptation, a process for which melatonin signaling is essential. How the SCN encodes day length is not fully understood. MicroRNAs (miRNAs) are small, non-coding RNAs that regulate gene expression by directing target mRNAs for degradation or translational repression. The miR-132/212 cluster plays a key role in facilitating neuronal plasticity, and miR-132 has been shown previously to modulate resetting of the central clock...
2018: Journal of Neurology & Neuromedicine
https://www.readbyqxmd.com/read/29680273/effects-of-early-eye-removal-on-the-morphology-of-a-multisensory-neuron-in-the-chicken-optic-tectum
#4
Katharina Lischka, Jiamin Yan, Stefan Weigel, Harald Luksch
The midbrain is a subcortical area involved in central functions such as integrating sensory modalities, movement initiation and bottom-up and top-down attention. In chicken, the midbrain roof is termed optic tectum (TeO) and consists of 15 layers with distinct in- and output regions. Visual input targets the superficial layers, while auditory input terminates in deeper layers. It has been shown that ablation of sensory epithelia leads to changes in the cellular patterning and structural organization of the sensory pathways...
April 19, 2018: Brain Research
https://www.readbyqxmd.com/read/29678909/restoration-of-physiological-expression-of-5-ht6-into-the-primary-cilia-of-null-mutant-neurons-lengthens-both-primary-cilia-and-dendrites
#5
Atom J Lesiak, Matthew Brodsky, Nathalie Cohenca, Alexandra G Croicu, John F Neumaier
5-HT6 serotonin receptors are promising targets for a variety of neuropsychiatric disorders and have been linked to several cellular signaling cascades. Endogenous 5-HT6 receptors are restricted to the primary neuronal cilium, a small sensory organelle stemming from the cell body that receives numerous extra-synaptic signals. Inhibition of 5-HT6 receptors decreases cilia length in primary neuronal cultures, but the signaling mechanisms involved are still unclear. Intense overexpression of exogenous 5-HT6 receptors increases the likelihood for receptors to localize outside of the primary cilium and have been associated with changes in cilia morphology and dendritic outgrowth...
April 20, 2018: Molecular Pharmacology
https://www.readbyqxmd.com/read/29677361/alterations-of-murine-subbasal-corneal-nerves-after-environmental-dry-eye-stress
#6
Cem Simsek, Takashi Kojima, Murat Dogru, Kazuo Tsubota
Purpose: To investigate the morphologic changes in the corneal subbasal nerve (CSN) plexus in wild-type mice after exposure to environmental dry eye stress (EDES) using in vivo confocal microscopy (IVCM). Methods: We examined 22 eyes of 8-week-old wild-type male mice (Balb/c, n = 11). The mice were exposed to an air fan inside a small compartment 5 hours/day for 3 days (EDES). Aqueous tear secretion and corneal epithelial damage were assessed. The CSNs were investigated by laser-scanning IVCM...
April 1, 2018: Investigative Ophthalmology & Visual Science
https://www.readbyqxmd.com/read/29674955/the-communication-between-the-immune-and-nervous-systems-the-role-of-il-1%C3%AE-in-synaptopathies
#7
REVIEW
Davide Pozzi, Elisabetta Menna, Alice Canzi, Genni Desiato, Cristina Mantovani, Michela Matteoli
In the last 15 years, groundbreaking genetic progress has underlined a convergence onto coherent synaptic pathways for most psychiatric and neurodevelopmental disorders, which are now collectively called "synaptopathies." However, the modest size of inheritance detected so far indicates a multifactorial etiology for these disorders, underlining the key contribution of environmental effects to them. Inflammation is known to influence the risk and/or severity of a variety of synaptopathies. In particular, pro-inflammatory cytokines, produced and released in the brain by activated astrocytes and microglia, may play a pivotal role in these pathologies...
2018: Frontiers in Molecular Neuroscience
https://www.readbyqxmd.com/read/29674117/electroconvulsive-seizures-influence-dendritic-spine-morphology-and-bdnf-expression-in-a-neuroendocrine-model-of-depression
#8
Kristen R Maynard, John W Hobbs, Sumita K Rajpurohit, Keri Martinowich
BACKGROUND: Electroconvulsive therapy (ECT) is a rapid and effective treatment for major depressive disorder. Chronic stress-induced depression causes dendrite atrophy and deficiencies in brain-derived neurotrophic factor (BDNF), which are reversed by anti-depressant drugs. Electroconvulsive seizures (ECS), an animal model of ECT, robustly increase BDNF expression and stimulate dendritic outgrowth. OBJECTIVE: The present study aims to understand cellular and molecular plasticity mechanisms contributing to the efficacy of ECS following chronic stress-induced depression...
April 6, 2018: Brain Stimulation
https://www.readbyqxmd.com/read/29673124/liquid-based-cytology-in-the-diagnosis-of-langerhans-cell-sarcoma-a-case-report
#9
Kazumi Iwasaki, Yasuhiro Sakai, Masaki Mori, Yoshiaki Imamura
Langerhans cell sarcoma (LCS) is an extremely rare malignant dendritic cell neoplasm with Langerhans cell differentiation. Conventional cytology, based on cell morphology alone, cannot render a cytological diagnosis of LCS because immunochemical analysis is essential to identify the Langerhans cell immunophenotype. We present a case illustrating the value of liquid-based cytology with immunocytochemistry as compared with conventional cytology, along with histological and immunohistochemical findings. A 92-year-old woman presented with a 1-month history of progressive right cervical lymphadenopathy...
April 19, 2018: Diagnostic Cytopathology
https://www.readbyqxmd.com/read/29669537/spatial-registration-of-neuron-morphologies-based-on-maximization-of-volume-overlap
#10
Ajayrama Kumaraswamy, Kazuki Kai, Hiroyuki Ai, Hidetoshi Ikeno, Thomas Wachtler
BACKGROUND: Morphological features are widely used in the study of neuronal function and pathology. Invertebrate neurons are often structurally stereotypical, showing little variance in gross spatial features but larger variance in their fine features. Such variability can be quantified using detailed spatial analysis, which however requires the morphologies to be registered to a common frame of reference. RESULTS: We outline here new algorithms - Reg-MaxS and Reg-MaxS-N - for co-registering pairs and groups of morphologies, respectively...
April 18, 2018: BMC Bioinformatics
https://www.readbyqxmd.com/read/29669258/rapid-effects-on-memory-consolidation-and-spine-morphology-by-estradiol-in-female-and-male-rodents
#11
REVIEW
Victoria Luine, Peter Serrano, Maya Frankfurt
Rapid, neurosteroid-like effects of estrogens on memory consolidation during recognition memory tasks in both male and female rodents are described. We discuss how these mnemonic changes are related to rapid estrogenic effects on dendritic spine density, the distribution of spine types and the expression of PSD95 and GluA2 within spines in the hippocampus and medial prefrontal cortex, two areas critical for learning and memory. Overall, these data lead to the conclusion that estrogens are capable of exerting rapid and potent influences on memory and spine morphology in both sexes...
April 15, 2018: Hormones and Behavior
https://www.readbyqxmd.com/read/29664120/morphological-heterogeneity-among-corticogeniculate-neurons-in-ferrets-quantification-and-comparison-with-a-previous-report-in-macaque-monkeys
#12
J Michael Hasse, Elise M Bragg, Allison J Murphy, Farran Briggs
The corticogeniculate (CG) pathway links the visual cortex with the lateral geniculate nucleus (LGN) of the thalamus and is the first feedback connection in the mammalian visual system. Whether functional connections between CG neurons and LGN relay neurons obey or ignore the separation of feedforward visual signals into parallel processing streams is not known. Accordingly, there is some debate about whether CG neurons are morphologically heterogeneous or homogenous. Here we characterized the morphology of CG neurons in the ferret, a visual carnivore with distinct feedforward parallel processing streams, and compared the morphology of ferret CG neurons with CG neuronal morphology previously described in macaque monkeys (Briggs et al, 2016)...
April 17, 2018: Journal of Comparative Neurology
https://www.readbyqxmd.com/read/29663795/morphological-behavior-of-printed-silver-electrodes-with-protective-self-assembled-monolayers-for-electrochemical-migration
#13
Tomohito Sekine, Jun Sato, Yasunori Takeda, Daisuke Kumaki, Shizuo Tokito
We evaluated electrochemical behaviors and reliability of printed Silver (Ag) electrodes prepared from nanoparticle inks with the use of protective self-assembled monolayers (SAMs) under electronic bias conditions. The printed Ag electrodes were fabricated by inkjet printing on a hydrophobic substrate. The SAMs, which acted as barriers to moisture, were prepared by immersing the substrate in a pentafluorobenzenethiol (PFBT) solution under ambient temperature (25 °C). In this study, we investigated the electrochemical migration phenomenon using water drop testing, and the results showed that the formation of dendrites connecting the cathode and the anode, which can affect the electrochemical reliability of an electric device, was suppressed in the presence of the SAMs...
April 17, 2018: ACS Applied Materials & Interfaces
https://www.readbyqxmd.com/read/29663644/biomimetic-sulfated-polyethylene-glycol-hydrogel-inhibits-proteoglycan-loss-and-tumor-necrosis-factor-%C3%AE-induced-expression-pattern-in-an-osteoarthritis-in-vitro-model
#14
Shabnam Hemmati-Sadeghi, Pradip Dey, Jochen Ringe, Rainer Haag, Michael Sittinger, Tilo Dehne
This study aimed to evaluate the potential of an anti-inflammatory polyethylene glycol (PEG) hydrogel for osteoarthritis (OA) management in an OA in vitro model. Freshly isolated porcine chondrocytes were maintained in high-density cultures to form cartilage-like three-dimensional micromasses. Recombinant porcine tumor necrosis factor-alpha (TNF-α) was used to induce OA-like changes. Normal and OA-like micromasses were treated with dendritic polyglycerol sulfate-based PEG hydrogel. Live/dead staining showed that all micromasses remained vital and presented similar morphological characteristics...
April 16, 2018: Journal of Biomedical Materials Research. Part B, Applied Biomaterials
https://www.readbyqxmd.com/read/29663134/profound-seasonal-changes-in-brain-size-and-architecture-in-the-common-shrew
#15
Javier Lázaro, Moritz Hertel, Chet C Sherwood, Marion Muturi, Dina K N Dechmann
The seasonal changes in brain size of some shrews represent the most drastic reversible transformation in the mammalian central nervous system known to date. Brain mass decreases 10-26% from summer to winter and regrows 9-16% in spring, but the underlying structural changes at the cellular level are not yet understood. Here, we describe the volumetric differences in brain structures between seasons and sexes of the common shrew (Sorex araneus) in detail, confirming that changes in different brain regions vary in the magnitude of change...
April 16, 2018: Brain Structure & Function
https://www.readbyqxmd.com/read/29660568/interdigitating-dendritic-cell-sarcoma-clinicopathologic-study-of-8-cases-with-review-of-the-literature
#16
REVIEW
Tian Xue, Xiang-Nan Jiang, Wei-Ge Wang, Xiao-Yan Zhou, Xiao-Qiu Li
To investigate the clinicopathologic features and differential diagnoses of interdigitating dendritic cell sarcoma (IDCS), the clinical, morphological and immunohistochemical features of eight cases of IDCS were collected and analyzed. Three patients were males and five were females, the mean age and the median age were 56.5 years and 57 years respectively. Clinically, the majority of cases involved lymph nodes. Microscopically, neoplastic cells were spindle or ovoid, forming fascicles or whorls. Every case had active mitosis figures...
March 30, 2018: Annals of Diagnostic Pathology
https://www.readbyqxmd.com/read/29651235/selective-labeling-of-individual-neurons-in-dense-cultured-networks-with-nanoparticle-enhanced-photoporation
#17
Ranhua Xiong, Peter Verstraelen, Jo Demeester, Andre G Skirtach, Jean-Pierre Timmermans, Stefaan C De Smedt, Winnok H De Vos, Kevin Braeckmans
Neurodevelopmental and neurodegenerative disorders are characterized by subtle alterations in synaptic connections and perturbed neuronal network functionality. A hallmark of neuronal connectivity is the presence of dendritic spines, micron-sized protrusions of the dendritic shaft that compartmentalize single synapses to fine-tune synaptic strength. However, accurate quantification of spine density and morphology in mature neuronal networks is hampered by the lack of targeted labeling strategies. To resolve this, we have optimized a method to deliver cell-impermeable compounds into selected cells based on Spatially resolved NAnoparticle-enhanced Photoporation (SNAP)...
2018: Frontiers in Cellular Neuroscience
https://www.readbyqxmd.com/read/29649212/principles-that-govern-competition-or-co-existence-in-rho-gtpase-driven-polarization
#18
Jian-Geng Chiou, Samuel A Ramirez, Timothy C Elston, Thomas P Witelski, David G Schaeffer, Daniel J Lew
Rho-GTPases are master regulators of polarity establishment and cell morphology. Positive feedback enables concentration of Rho-GTPases into clusters at the cell cortex, from where they regulate the cytoskeleton. Different cell types reproducibly generate either one (e.g. the front of a migrating cell) or several clusters (e.g. the multiple dendrites of a neuron), but the mechanistic basis for unipolar or multipolar outcomes is unclear. The design principles of Rho-GTPase circuits are captured by two-component reaction-diffusion models based on conserved aspects of Rho-GTPase biochemistry...
April 12, 2018: PLoS Computational Biology
https://www.readbyqxmd.com/read/29643833/-in-vivo-confocal-microscopic-evaluation-of-corneal-nerve-fibers-and-dendritic-cells-in-patients-with-beh%C3%A3-et-s-disease
#19
Gulfidan Bitirgen, Emine Tinkir Kayitmazbatir, Gunhal Satirtav, Rayaz A Malik, Ahmet Ozkagnici
Central and peripheral nervous system involvement may occur during the course of Behçet's disease (BD). In vivo corneal confocal microscopy (CCM) can detect corneal small fiber damage and immune cell density. The aim of this study was to assess central corneal sensitivity, corneal subepithelial nerve plexus morphology and dendritic cell (DC) density in patients with BD. Forty-nine consecutive patients with BD and 30 healthy control subjects were included in this cross-sectional study conducted at a tertiary referral university hospital...
2018: Frontiers in Neurology
https://www.readbyqxmd.com/read/29627838/assessment-of-corneal-changes-associated-with-topical-antiglaucoma-therapy-using-in-vivo-confocal-microscopy
#20
Elmira Baghdasaryan, Tudor C Tepelus, Laura A Vickers, Ping Huang, Vikas Chopra, SriniVas R Sadda, Olivia L Lee
PURPOSE: Ocular surface disease (OSD) is highly prevalent in eyes treated with chronic, topical antiglaucoma (A/G) therapy. The purpose of this study was to utilize in vivo confocal microscopy (IVCM) to evaluate the corneal morphology, including characteristics of corneal epithelial cells, presence of epithelial dendritic cells (DCs), and characteristics of subbasal nerve plexus, of eyes under topical A/G therapy versus normal eyes. METHODS: Central corneal images were prospectively captured from 30 eyes of 16 patients under topical A/G therapy (>6 months) and 20 normal control eyes, using IVCM (HRT 3 RCM, Heidelberg, Germany)...
April 7, 2018: Ophthalmic Research
keyword
keyword
58686
1
2
Fetch more papers »
Fetching more papers... Fetching...
Read by QxMD. Sign in or create an account to discover new knowledge that matter to you.
Remove bar
Read by QxMD icon Read
×

Search Tips

Use Boolean operators: AND/OR

diabetic AND foot
diabetes OR diabetic

Exclude a word using the 'minus' sign

Virchow -triad

Use Parentheses

water AND (cup OR glass)

Add an asterisk (*) at end of a word to include word stems

Neuro* will search for Neurology, Neuroscientist, Neurological, and so on

Use quotes to search for an exact phrase

"primary prevention of cancer"
(heart or cardiac or cardio*) AND arrest -"American Heart Association"