keyword
MENU ▼
Read by QxMD icon Read
search

SCN

keyword
https://www.readbyqxmd.com/read/29148782/effect-of-side-chain-branching-on-enhancement-of-ionic-conductivity-and-capacity-retention-of-copolymer-electrolyte-membrane
#1
Guopeng Fu, Thein Kyu
Low current drain driven by the low ionic conductivity of solid polymer electrolyte is one of the major obstacles of solid state battery. In an effort to improve the ionic conductivity, polyethylene glycol diacrylate (PEGDA) and monofunctional polyethylene glycol methyl ether acrylate (PEGMEA) were copolymerized via photopolymerization to afford PEGDA network with dangling PEGMEA side chains. By attaching PEGMEA side branches to the PEGDA network backbone, the glass transition temperature (Tg) was found to decrease, which may be controlled by varying relative amounts of PEGMEA and PEGDA...
November 17, 2017: Langmuir: the ACS Journal of Surfaces and Colloids
https://www.readbyqxmd.com/read/29146932/activation-of-endogenous-arginine-vasopressin-neurons-inhibit-food-intake-by-using-a-novel-transgenic-rat-line-with-dreadds-system
#2
Mitsuhiro Yoshimura, Kazuaki Nishimura, Haruki Nishimura, Satomi Sonoda, Hiromichi Ueno, Yasuhito Motojima, Reiko Saito, Takashi Maruyama, Yuki Nonaka, Yoichi Ueta
Various studies contributed to discover novel mechanisms of central arginine vasopressin (AVP) system responsible for the behaviour albeit endogenous vasopressin activation. We established a novel transgenic rat line which expresses both human muscarinic acetylcholine receptors (hM3Dq), of which ligand is clozapine-N-oxide (CNO), and mCherry fluorescence specifically in AVP neurons. The mCherry neurons that indicate the expression of the hM3Dq gene were observed in the suprachiasmatic (SCN), supraoptic (SON), and paraventricular nuclei (PVN)...
November 16, 2017: Scientific Reports
https://www.readbyqxmd.com/read/29139560/the-mammalian-circadian-clock-exhibits-chronic-ethanol-tolerance-and-withdrawal-induced-glutamate-hypersensitivity-accompanied-by-changes-in-glutamate-and-trkb-receptor-proteins
#3
Jonathan H Lindsay, Rebecca A Prosser
BACKGROUND: Alcohol tolerance and withdrawal-induced effects are criteria for alcohol use disorders listed by the DSM-V. Although tolerance and withdrawal have been studied over many decades, there is still uncertainty regarding mechanistic distinctions that characterize these different forms of ethanol (EtOH)-induced plasticity. Previously, we demonstrated that the suprachiasmatic nucleus (SCN) circadian clock develops both acute and rapid tolerance to EtOH inhibition of glutamate-induced circadian phase shifts...
November 15, 2017: Alcoholism, Clinical and Experimental Research
https://www.readbyqxmd.com/read/29138967/mice-lacking-egr1-have-impaired-clock-gene-bmal1-oscillation-locomotor-activity-and-body-temperature
#4
Casper Schwartz Riedel, Birgitte Georg, Henrik L Jørgensen, Jens Hannibal, Jan Fahrenkrug
Early growth response transcription factor 1 (EGR1) is expressed in the suprachiasmatic nucleus (SCN) after light stimulation. We used EGR1-deficient mice to address the role of EGR1 in the clock function and light-induced resetting of the clock. The diurnal rhythms of expression of the clock genes BMAL1 and PER1 in the SCN were evaluated by semi-quantitative in situ hybridization. We found no difference in the expression of PER1 mRNA between wildtype and EGR1-deficient mice; however, the daily rhythm of BMAL1 mRNA was completely abolished in the EGR1-deficient mice...
November 14, 2017: Journal of Molecular Neuroscience: MN
https://www.readbyqxmd.com/read/29138591/anatomical-etiology-of-pseudo-sciatica-from-superior-cluneal-nerve-entrapment-a-laboratory-investigation
#5
Tomoyuki Konno, Yoichi Aota, Hiroshi Kuniya, Tomoyuki Saito, Ning Qu, Shogo Hayashi, Shinichi Kawata, Masahiro Itoh
Objective: The superior cluneal nerve (SCN) may become entrapped where it pierces the thoracolumbar fascia over the iliac crest; this can cause low back pain (LBP) and referred pain radiating into the posterior thigh, calf, and occasionally the foot, producing the condition known as "pseudo-sciatica." Because the SCN was thought to be a cutaneous branch of the lumbar dorsal rami, originating from the dorsal roots of L1-L3, previous anatomical studies failed to explain why SCN causes "pseudo-sciatica"...
2017: Journal of Pain Research
https://www.readbyqxmd.com/read/29134216/multiple-interaction-regulated-phase-transition-behavior-of-thermo-responsive-copolymers-containing-cationic-poly-ionic-liquid-s
#6
Yingna Zhang, Hui Tang, Peiyi Wu
The effect of multiple interactions including anion-macromolecule interaction, water-mediated ion-macromolecule interaction and hydrophobic interaction on the phase transition behaviors of random copolymers P(OEGMA-co-BVIm[X]) comprising oligo(ethylene glycol)methacrylate (OEGMA) and imidazolium-based ionic liquids is investigated in the present study. Temperature-variable (1)H NMR and FT-IR investigations demonstrated that the hydration of CH2 side chains in P(OEGMA-co-BVIm[SCN]) was enhanced due to the anion-dipole interaction between a chaotropic anion SCN(-) and CH2 groups, and dehydration of C[double bond, length as m-dash]O groups served as the driving force of phase transition...
November 14, 2017: Physical Chemistry Chemical Physics: PCCP
https://www.readbyqxmd.com/read/29118813/the-leukemic-stem-cell-niche-adaptation-to-hypoxia-versus-oncogene-addiction
#7
Giulia Cheloni, Martina Poteti, Silvia Bono, Erico Masala, Nathalie M Mazure, Elisabetta Rovida, Matteo Lulli, Persio Dello Sbarba
Previous studies based on low oxygen concentrations in the incubation atmosphere revealed that metabolic factors govern the maintenance of normal hematopoietic or leukemic stem cells (HSC and LSC). The physiological oxygen concentration in tissues ranges between 0.1 and 5.0%. Stem cell niches (SCN) are placed in tissue areas at the lower end of this range ("hypoxic" SCN), to which stem cells are metabolically adapted and where they are selectively hosted. The data reported here indicated that driver oncogenic proteins of several leukemias are suppressed following cell incubation at oxygen concentration compatible with SCN physiology...
2017: Stem Cells International
https://www.readbyqxmd.com/read/29117548/multiplexing-visual-signals-in-the-suprachiasmatic-nuclei
#8
Adam R Stinchcombe, Joshua W Mouland, Kwoon Y Wong, Robert J Lucas, Daniel B Forger
The suprachiasmatic nuclei (SCN), the site of the mammalian circadian (daily) pacemaker, contains thousands of interconnected neurons, some of which receive direct retinal input. Here, we study the fast (<1 s) responses of SCN neurons to visual stimuli with a large-scale mathematical model tracking the ionic currents and voltage of all SCN neurons. We reconstruct the SCN network connectivity and reject 99.99% of theoretically possible SCN networks by requiring that the model reproduces experimentally determined receptive fields of SCN neurons...
November 7, 2017: Cell Reports
https://www.readbyqxmd.com/read/29116795/reactions-of-sulfur-and-oxygen-containing-anions-with-hydrogen-atoms-a-comparative-study
#9
Ya-Ke Li, Zhe-Chen Wang, Sheng-Gui He, Veronica M Bierbaum
Reactions of hydrogen atoms with small sulfur-containing anions, SCN-, CH3COS-, C6H5COS-, -SCH2COOH, C6H5S-, 2-HOOCC6H4S-, and related oxygen-containing anions, OCN-, CH3COO-, C6H5COO-, HOCH2COO-, C6H5O-, 2-HOOCC6H4O-, have been studied both experimentally and computationally. The experimental results show that associative electron detachment (AED) is the only channel for the reactions. The rate constants for reactions between sulfur-containing anions and H atoms are generally higher than for the related oxygen-containing anions with the exception of the reaction of SCN-...
November 8, 2017: Journal of Physical Chemistry Letters
https://www.readbyqxmd.com/read/29113012/the-suprachiasmatic-nucleus-drives-day-night-variations-in-postprandial-triglyceride-uptake-into-skeletal-muscle-and-brown-adipose-tissue
#10
Sofía Moran-Ramos, Natali N Guerrero-Vargas, Rebeca Mendez-Hernandez, Maria Del Carmen Basualdo, Carolina Escobar, Ruud M Buijs
What is the central question of this study? What are the factors influencing day-night variations in postprandial triglycerides? What is the main finding and its importance? Rats show low postprandial plasma triglyceride concentrations early in the active period that are attributable to a higher uptake by skeletal muscle and brown adipose tissue. We show that these day-night variations in uptake are driven by the suprachiasmatic nucleus, probably via a Rev-erbα-mediated mechanism and independent of locomotor activity...
November 7, 2017: Experimental Physiology
https://www.readbyqxmd.com/read/29108314/utility-of-endoscopic-ultrasound-guided-fine-needle-aspiration-of-regional-lymph-nodes-that-are-proximal-to-and-far-from-the-primary-distal-esophageal-carcinoma
#11
Yusuke Shimodaira, Rebecca S Slack, Kazuto Harada, Manoop S Bhutani, Elena Elimova, Gregg A Staerkel, Nour Sneige, Jeremy Erasmus, Hironori Shiozaki, Nikolaos Charalampakis, Venkatram Planjery, Dilsa Mizrak Kaya, Fatemeh G Amlashi, Mariela A Blum, Heath D Skinner, Bruce D Minsky, Dipen M Maru, Wayne L Hofstetter, Stephen G Swisher, Jeannette E Mares, Jane E Rogers, Quan D Lin, William A Ross, Brian Weston, Jeffrey H Lee, Jaffer A Ajani
Implications of assessing the proximal and far para-tracheal or sub-carinal nodes (para-tracheal [PTN] or sub-carinal [SCN]) associated with lower primary esophageal carcinomas (ECs) are unclear. To evaluate the value of endoscopic ultrasound guided fine-needle aspiration (EUS-FNA) for PTN and SCN, we analyzed results by positron emission tomography (PET) avidity, 4 EUS node malignancy features, and EUS-FNA results in all patients with Siewert's I or II EC. Of 133 patients (PTN, n=102; SCN, n=31) with EUS-FNA, 47 (35%) patients had malignant node, leading to treatment modifications...
October 3, 2017: Oncotarget
https://www.readbyqxmd.com/read/29105472/-effect-of-acupuncture-stimulation-of-different-acupoint-combinations-on-sleep-and-expression-of-circadian-clock-and-bmal-1-genes-in-hypothalamus-of-insomnia-rats
#12
Xin-Ran Wei, Gao-Wen Wei, Xue-Na Zheng, Xue-Fen Wu, Xiao-Li Chen, Li Liu, Qi-Qi Wen, Li-Na Xie, Zhi-Qiang Xie, Zeng-Hui Yue
OBJECTIVE: To observe the effect of manual acupuncture stimulation (MAS) of "Baihui"(GV 20)-"Shenmen"(HT 7)or GV 20-"Sanyinjiao"(SP 6) on sleep and expression of circadian rhythm genes (Clock and Bmal 1) in the hypothalamus in insomnia rats, so as to select a better acupoint group for insomnia. METHODS: A total of 53 SD rats were randomly divided into normal control (n=12),insomnia model (n=8), GV 20-HT 7(n=12), GV 20-SP 6(n=11),and GV 20-non-acupoint (n=10) groups...
October 25, 2017: Zhen Ci Yan Jiu, Acupuncture Research
https://www.readbyqxmd.com/read/29105105/low-back-pain-due-to-superior-cluneal-nerve-entrapment-clinicopathological-study
#13
Kyongsong Kim, Jun Shimizu, Toyohiko Isu, Kiyoharu Inoue, Yasuhiro Chiba, Naotaka Iwamoto, Daijiro Morimoto, Masanori Isobe, Akio Morita
INTRODUCTION: We studied the clinical and nerve pathological features in 6 patients whose low back pain (LBP) was relieved by superior cluneal nerve (SCN) neurectomy to determine whether nerve compression was the mechanism underlying this type of LBP. METHODS: ALL 6 patients (7 nerves) underwent SCN neurectomy for intractable LBP. Their clinical outcomes and the pathological features of 7 nerves were reviewed. RESULTS: All patients reported LBP relief immediately after SCN neurectomy...
November 3, 2017: Muscle & Nerve
https://www.readbyqxmd.com/read/29102282/sleep-and-alzheimer-s-disease-a-pivotal-role-for-the-suprachiasmatic-nucleus
#14
REVIEW
Jan Van Erum, Debby Van Dam, Peter Paul De Deyn
Alzheimer's disease (AD), which accounts for most of the dementia cases, is, aside from cognitive deterioration, often characterized by the presence of non-cognitive symptoms. Society is desperately in need for interventions that alleviate the economic and social burden related to AD. Circadian dysrhythmia, one of these symptoms in particular, immensely decreases the self-care ability of AD patients and is one of the main reasons of caregiver exhaustion. Studies suggest that these circadian disturbances form the root of sleep-wake problems, diagnosed in more than half of AD patients...
July 28, 2017: Sleep Medicine Reviews
https://www.readbyqxmd.com/read/29098175/inhibiting-production-of-new-brain-cells-during-puberty-or-adulthood-blunts-the-hormonally-induced-surge-of-luteinizing-hormone-in-female-rats
#15
Margaret A Mohr, Lydia L DonCarlos, Cheryl L Sisk
New cells are added during both puberty and adulthood to hypothalamic regions that govern reproduction, homeostasis, and social behaviors, yet the functions of these late-born cells remain elusive. Here, we pharmacologically inhibited cell proliferation in ventricular zones during puberty or in adulthood and determined subsequent effects on the hormone-induced surge of luteinizing hormone (LH) in female rats. Initial neuroanatomical analyses focused on verifying incorporation, activation, and pharmacological inhibition of pubertally or adult born cells in the anteroventral periventricular nucleus (AVPV) of the hypothalamus because of the essential role of the AVPV in triggering the preovulatory LH surge in females...
September 2017: ENeuro
https://www.readbyqxmd.com/read/29098142/fractal-and-gray-level-cooccurrence-matrix-computational-analysis-of-primary-osteosarcoma-magnetic-resonance-images-predicts-the-chemotherapy-response
#16
Goran J Djuričić, Marko Radulovic, Jelena P Sopta, Marina Nikitović, Nebojša T Milošević
The prediction of induction chemotherapy response at the time of diagnosis may improve outcomes in osteosarcoma by allowing for personalized tailoring of therapy. The aim of this study was thus to investigate the predictive potential of the so far unexploited computational analysis of osteosarcoma magnetic resonance (MR) images. Fractal and gray level cooccurrence matrix (GLCM) algorithms were employed in retrospective analysis of MR images of primary osteosarcoma localized in distal femur prior to the OsteoSa induction chemotherapy...
2017: Frontiers in Oncology
https://www.readbyqxmd.com/read/29097993/s-equol-exerts-estradiol-like-anorectic-action-with-minimal-stimulation-of-estrogen-receptor-%C3%AE-in-ovariectomized-rats
#17
Yuri Nishimura, Kaori Mabuchi, Azusa Takano, Yayoi Hara, Hiroko Negishi, Keiko Morimoto, Tomomi Ueno, Shigeto Uchiyama, Akira Takamata
Chronic estrogen replacement in ovariectomized rats attenuates food intake and enhances c-Fos expression in the suprachiasmatic nucleus (SCN), specifically during the light phase. S-equol, a metabolite of daidzein, has a strong affinity for estrogen receptor (ER)-β and exerts estrogenic activity. The purpose of the present study was to elucidate whether S-equol exerts an estrogen-like anorectic effect by modifying the regulation of the circadian feeding rhythm in ovariectomized rats. Ovariectomized female Wistar rats were divided into an estradiol (E2)-replaced group and cholesterol (vehicle; Veh)-treated group...
2017: Frontiers in Endocrinology
https://www.readbyqxmd.com/read/29097992/circadian-and-metabolic-effects-of-light-implications-in-weight-homeostasis-and-health
#18
REVIEW
Santiago A Plano, Leandro P Casiraghi, Paula García Moro, Natalia Paladino, Diego A Golombek, Juan J Chiesa
Daily interactions between the hypothalamic circadian clock at the suprachiasmatic nucleus (SCN) and peripheral circadian oscillators regulate physiology and metabolism to set temporal variations in homeostatic regulation. Phase coherence of these circadian oscillators is achieved by the entrainment of the SCN to the environmental 24-h light:dark (LD) cycle, coupled through downstream neural, neuroendocrine, and autonomic outputs. The SCN coordinate activity and feeding rhythms, thus setting the timing of food intake, energy expenditure, thermogenesis, and active and basal metabolism...
2017: Frontiers in Neurology
https://www.readbyqxmd.com/read/29092827/somatic-mutations-and-clonal-hematopoiesis-in-congenital-neutropenia
#19
Jun Xia, Christopher A Miller, Jack Baty, Amrita Ramesh, Matthew R M Jotte, Robert S Fulton, Tiphanie P Vogel, Megan A Cooper, Kelly J Walkovich, Vahagn Makaryan, Audrey A Bolyard, Mary C Dinauer, David B Wilson, Adrianna Vlachos, Kasiani C Myers, Robert J Rothbaum, Alison A Bertuch, David C Dale, Akiko Shimamura, Laurence A Boxer, Daniel C Link
Severe congenital neutropenia (SCN) and Shwachman-Diamond syndrome (SDS) are congenital neutropenia syndromes with a high rate of leukemic transformation. Hematopoietic stressors may contribute to leukemic transformation by increasing the mutation rate in hematopoietic stem/progenitor cells (HSPCs) and/or by promoting clonal hematopoiesis. We sequenced the exome of individual hematopoietic colonies derived from 13 patients with congenital neutropenia to measure total mutation burden and performed error-corrected sequencing on a panel of 46 genes on 80 patients with congenital neutropenia to assess for clonal hematopoiesis...
November 1, 2017: Blood
https://www.readbyqxmd.com/read/29090715/the-synthesis-and-reactivity-of-16-electron-half-sandwich-iridium-complexes-bearing-a-carboranylthioamide-ligand
#20
Peng-Fei Cui, Yue-Jian Lin, Guo-Xin Jin
A 16-electron half-sandwich Ir(iii) complex (Cp*Ir(SCN-Ph)C2H10H11, 2) featuring an o-carboranylthioamidate ligand has been synthesized, and its reactivity has been studied in detail. 2 reacts with donor ligands to afford a stable 18-electron configuration. Interestingly, the electron-deficient iridium complex 2 underwent an Ir-S bond insertion reaction with DMAD to produce an acetylene insertion product 5. Complex 2 also reacted with the [Cp*Ir] unit, produced by the reaction between [Cp*IrCl2]2 and AgOTf, to form a unique binuclear species with a metal-metal bond...
November 14, 2017: Dalton Transactions: An International Journal of Inorganic Chemistry
keyword
keyword
79274
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"