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https://www.readbyqxmd.com/read/28342972/remodeling-the-th1-polarized-systemic-environment-contributes-to-neurogenesis-and-cognitive-function-via-the-wnt7a-pathway-in-neonatal-mice
#1
YunLong Xu, Fen He, FangFang Qi, Guangqi Yang, FuXiang Zheng, JunHua Yang, Xiao Wang, JunXiu Liu, JunTao Zou
Neonatal Bacillus Calmette-Guérin (BCG) vaccination results in a positive effect on hippocampal neurogenesis and cognition. Serum cytokines are considered to be the chief culprit. In this study, serum from BCG-treated mice was identified as Th1 polarized serum. The serum showed an increased ratio of IFN-γ to IL-4 and decreased levels of TNF-α and IL-6. After Th1 polarized serum was injected intraperitoneally into postnatal mice, the levels of cytokines and ratio of IFN-γ to IL-4 in the serum and hippocampus of postnatal mice showed a similar alteration as those in Th1 polarized serum...
March 22, 2017: Neurobiology of Learning and Memory
https://www.readbyqxmd.com/read/28327614/partial-reprogramming-of-pluripotent-stem-cell-derived-cardiomyocytes-into-neurons
#2
Wenpo Chuang, Arun Sharma, Praveen Shukla, Guang Li, Moritz Mall, Kuppusamy Rajarajan, Oscar J Abilez, Ryoko Hamaguchi, Joseph C Wu, Marius Wernig, Sean M Wu
Direct reprogramming of somatic cells has been demonstrated, however, it is unknown whether electrophysiologically-active somatic cells derived from separate germ layers can be interconverted. We demonstrate that partial direct reprogramming of mesoderm-derived cardiomyocytes into neurons is feasible, generating cells exhibiting structural and electrophysiological properties of both cardiomyocytes and neurons. Human and mouse pluripotent stem cell-derived CMs (PSC-CMs) were transduced with the neurogenic transcription factors Brn2, Ascl1, Myt1l and NeuroD...
March 22, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28314928/hilar-granule-cells-of-the-mouse-dentate-gyrus-effects-of-age-septotemporal-location-strain-and-selective-deletion-of-the-proapoptotic-gene-bax
#3
Keria Bermudez-Hernandez, Yi-Ling Lu, Jillian Moretto, Swati Jain, John J LaFrancois, Aine M Duffy, Helen E Scharfman
The dentate gyrus (DG) principal cells are glutamatergic granule cells (GCs), and they are located in a compact cell layer. However, GCs are also present in the adjacent hilar region, but have been described in only a few studies. Therefore, we used the transcription factor prospero homeobox 1 (Prox1) to quantify GCs at postnatal day (PND) 16, 30, and 60 in a common mouse strain, C57BL/6J mice. At PND16, there was a large population of Prox1-immunoreactive (ir) hilar cells, with more in the septal than temporal hippocampus...
March 17, 2017: Brain Structure & Function
https://www.readbyqxmd.com/read/28294240/pegylation-corannulene-enhances-response-of-stress-through-promoting-neurogenesis
#4
Xinyu Li, Dandan Sun, Xu Li, Dashuai Zhu, Zhenzhen Jia, Jiajia Jiao, Kai Wang, Deling Kong, Xin Zhao, Lin Xu, Qiang Zhao, Dongyan Chen, Xizeng Feng
Carbon nanomaterials have been used to treat neurodegenerative diseases and neural disorders due to their diverse molecular structures. Corannulene is a three-dimensional π-bowl carbon nanomaterial that is different from planar PAHs, fullerenes and carbon nanotubes, but little is known about its biological functions. Herein, corannulene was functionalized with mPEG-DESP to prepare PEGylation corannulene nanoparticles (PEGylation CoNps). The synthesized PEGylation CoNps shows enhanced solubility and reduced aggregation when compared corannulene...
March 15, 2017: Biomaterials Science
https://www.readbyqxmd.com/read/28281676/rat-umbilical-cord-blood-cells-attenuate-hypoxic-ischemic-brain-injury-in-neonatal-rats
#5
Keiko Nakanishi, Yoshiaki Sato, Yuka Mizutani, Miharu Ito, Akihiro Hirakawa, Yujiro Higashi
Increasing evidence has suggested that human umbilical cord blood cells (hUCBC) have a favorable effect on hypoxic-ischemic (HI) brain injury. However, the efficacy of using hUCBCs to treat this injury has been variable and the underlying mechanism remains elusive. Here, we investigated its effectiveness using stereological analysis in an allogeneic system to examine whether intraperitoneal injection of cells derived from UCBCs of green fluorescent protein (GFP)-transgenic rats could ameliorate brain injury in neonatal rats...
March 10, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28279169/effect-of-skilled-reaching-training-and-enriched-environment-on-generation-of-oligodendrocytes-in-the-adult-sensorimotor-cortex-and-corpus-callosum
#6
Silke Keiner, Fanny Niv, Susanne Neumann, Tanja Steinbach, Christian Schmeer, Katrin Hornung, Yvonne Schlenker, Martin Förster, Otto W Witte, Christoph Redecker
BACKGROUND: Increased motor activity or social interactions through enriched environment are strong stimulators of grey and white matter plasticity in the adult rodent brain. In the present study we evaluated whether specific reaching training of the dominant forelimb (RT) and stimulation of unspecific motor activity through enriched environment (EE) influence the generation of distinct oligodendrocyte subpopulations in the sensorimotor cortex and corpus callosum of the adult rat brain...
March 9, 2017: BMC Neuroscience
https://www.readbyqxmd.com/read/28278183/systemic-thioridazine-in-combination-with-dicloxacillin-against-early-aortic-graft-infections-caused-by-staphylococcus-aureus-in-a-porcine-model-in-vivo-results-do-not-reproduce-the-in-vitro-synergistic-activity
#7
Michael Stenger, Carsten Behr-Rasmussen, Kasper Klein, Rasmus B Grønnemose, Thomas Emil Andersen, Janne K Klitgaard, Hans Jørn Kolmos, Jes S Lindholt
INTRODUCTION: Conservative treatment solutions against aortic prosthetic vascular graft infection (APVGI) for inoperable patients are limited. The combination of antibiotics with antibacterial helper compounds, such as the neuroleptic drug thioridazine (TDZ), should be explored. AIM: To investigate the efficacy of conservative systemic treatment with dicloxacillin (DCX) in combination with TDZ (DCX+TDZ), compared to DCX alone, against early APVGI caused by methicillin-sensitive Staphylococcus aureus (MSSA) in a porcine model...
2017: PloS One
https://www.readbyqxmd.com/read/28254502/maternal-exposure-to-titanium-dioxide-nanoparticles-during-pregnancy-and-lactation-alters-offspring-hippocampal-mrna-bax-and-bcl-2-levels-induces-apoptosis-and-decreases-neurogenesis
#8
Alireza Ebrahimzadeh Bideskan, Abbas Mohammadipour, Alireza Fazel, Hossein Haghir, Houshang Rafatpanah, Mahmoud Hosseini, Aliakbar Rajabzadeh
INTRODUCTION: The usage of Titanium dioxide nanoparticles (TiO2-NPs) covers a vast area in different fields ranging from cosmetics and food to the production of drugs. Maternal exposure to TiO2-NPs during developmental period has been associated with hippocampal injury and with a decrease in learning and memory status of the offspring. However, little is known about its injury mechanism. This paper describes the in vivo neurotoxic effects of TiO2-NPs on rat offspring hippocampus during developmental period...
February 26, 2017: Experimental and Toxicologic Pathology: Official Journal of the Gesellschaft Für Toxikologische Pathologie
https://www.readbyqxmd.com/read/28246483/modified-docetaxel-cisplatin-and-capecitabine-for-stage-iv-gastric-cancer-in-japanese-patients-a-feasibility-study
#9
Osamu Maeda, Ayumu Matsuoka, Ryoji Miyahara, Kohei Funasaka, Yoshiki Hirooka, Masahide Fukaya, Masato Nagino, Yasuhiro Kodera, Hidemi Goto, Yuichi Ando
AIM: To evaluate the feasibility of chemotherapy including fluoropyrimidine, platinum and taxane with modified dosages for unresectable gastric cancer in Japanese patients. METHODS: We performed a feasibility study of a modified docetaxel, cisplatin and capecitabine (DCX) regimen for stage IV gastric cancer. In particular, 30 or 40 mg/m(2) of docetaxel on day 1, 60 mg/m(2) of cisplatin on day 1, and 2000 mg/m(2) of capecitabine for 2 wk were administered every three weeks...
February 14, 2017: World Journal of Gastroenterology: WJG
https://www.readbyqxmd.com/read/28237805/noradrenergic-regulation-of-plasticity-marker-expression-in-the-adult-rodent-piriform-cortex
#10
Krishna C Vadodaria, Sudhirkumar U Yanpallewar, Mayur Vadhvani, Devyani Toshniwal, L Cameron Liles, Karen S Rommelfanger, David Weinshenker, Vidita A Vaidya
The adult rodent piriform cortex has been reported to harbor immature neurons that express markers associated with neurodevelopment and plasticity, namely polysialylated neural cell adhesion molecule (PSA-NCAM) and doublecortin (DCX). We characterized the expression of PSA-NCAM and DCX across the rostrocaudal axis of the rat piriform cortex and observed higher numbers of PSA-NCAM and DCX positive cells in the posterior subdivision. As observed in the rat piriform cortex, Nestin-GFP reporter mice also revealed a similar gradient of GFP-positive cells with an increasing rostro-caudal gradient of expression...
February 23, 2017: Neuroscience Letters
https://www.readbyqxmd.com/read/28230741/high-frequency-repetitive-transcranial-magnetic-stimulation-rtms-improves-functional-recovery-by-enhancing-neurogenesis-and-activating-bdnf-trkb-signaling-in-ischemic-rats
#11
Jing Luo, Haiqing Zheng, Liying Zhang, Qingjie Zhang, Lili Li, Zhong Pei, Xiquan Hu
Repetitive transcranial magnetic stimulation (rTMS) has rapidly become an attractive therapeutic approach for stroke. However, the mechanisms underlying this remain elusive. This study aimed to investigate whether high-frequency rTMS improves functional recovery mediated by enhanced neurogenesis and activation of brain-derived neurotrophic factor (BDNF)/tropomyosin-related kinase B (TrkB) pathway and to compare the effect of conventional 20 Hz rTMS and intermittent theta burst stimulation (iTBS) on ischemic rats...
February 20, 2017: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/28195036/gsk-3%C3%AE-inhibition-induced-neuroprotection-regeneration-and-functional-recovery-after-intracerebral-hemorrhagic-stroke
#12
Yingying Zhao, Zheng Zachory Wei, James Ya Zhang, Yongbo Zhang, Soonmi Won, Jinmei Sun, Shan Ping Yu, Jimei Li, Ling Wei
Hemorrhagic stroke is a devastating disease that lacks effective therapies. In the present investigation, we tested 6-bromoindirubin-3'-oxime (BIO) as a selective glycogen synthase kinase-3β (GSK-3β) inhibitor in a mouse model of intracerebral hemorrhage (ICH). ICH was induced by injection of collagenase IV into the striatum of 8 to 10-week old C57BL/6 mice. BIO (8 µg/kg, i.p.) was administered following either an acute delivery (0 - 2 hr delay) or a prolonged regimen (every 48 hrs starting at 3 days postICH)...
February 14, 2017: Cell Transplantation
https://www.readbyqxmd.com/read/28194885/in-vivo-bioluminescence-imaging-of-neurogenesis-the-role-of-the-blood-brain-barrier-in-an-experimental-model-of-parkinson-s-disease
#13
Inga B Fricke, Sonja Schelhaas, Bastian Zinnhardt, Thomas Viel, Sven Hermann, Sébastien Couillard-Després, Andreas H Jacobs
Bioluminescence imaging in transgenic mice expressing firefly luciferase in Doublecortin(+) (Dcx) neuroblasts might serve as a powerful tool to study the role of neurogenesis in models of brain injury and neurodegeneration using non-invasive, longitudinal in vivo imaging. Therefore, we aimed to use BLI in B6(Cg)-Tyrc-2J/J Dcx-Luc (Doublecortin-Luciferase, Dcx-Luc) mice to investigate its suitability to assess neurogenesis in a unilateral injection model of Parkinson's disease. We further aimed to assess the blood brain barrier leakage associated with the intranigral 6-OHDA injection to evaluate its impact on substrate delivery and bioluminescence signal intensity...
February 13, 2017: European Journal of Neuroscience
https://www.readbyqxmd.com/read/28168441/late-effect-of-developmental-exposure-to-3-3-iminodipropionitrile-on-neurogenesis-in-the-hippocampal-dentate-gyrus-of-mice
#14
Yasuko Hasegawa-Baba, Takeshi Tanaka, Yousuke Watanabe, Liyun Wang, Megu Itahashi, Toshinori Yoshida, Makoto Shibutani
The effects of developmental exposure to 3,3'-iminodipropionitrile (IDPN), a neurotoxicant that causes proximal axonopathy, on mouse hippocampal neurogenesis was examined. Pregnant mice were exposed to IDPN at 0, 600, or 1200 ppm in their drinking water from gestational day 6 to postnatal day (PND) 21. On PND 21, male offspring showed increased postmitotic neuron-specific NeuN-immunoreactive((+)) granule cell numbers in the dentate subgranular zone (SGZ) and granule cell layer (GCL) and decreased glutamate receptor gene Grin2d levels in the dentate gyrus at 1200 ppm...
February 6, 2017: Neurotoxicity Research
https://www.readbyqxmd.com/read/28151698/immunocytochemical-profiling-of-cultured-mouse-primary-retinal-cells
#15
Marina C Zalis, Sebastian Johansson, Ulrica Englund-Johansson
Primary retinal cell cultures and immunocytochemistry are important experimental platforms in ophthalmic research. Translation of retinal cells from their native environment to the in vitro milieu leads to cellular stress, jeopardizing their in vivo phenotype features. Moreover, the specificity and stability of many retinal immunochemical markers are poorly evaluated in retinal cell cultures. Hence, we here evaluated the expression profile of 17 retinal markers, that is, recoverin, rhodopsin, arrestin, Chx10, PKC, DCX, CRALBP, GS, vimentin, TPRV4, RBPMS, Brn3a, β-tubulin III, NeuN, MAP2, GFAP, and synaptophysin...
January 1, 2017: Journal of Histochemistry and Cytochemistry: Official Journal of the Histochemistry Society
https://www.readbyqxmd.com/read/28141859/studies-of-hvc-plasticity-in-adult-canaries-reveal-social-effects-and-sex-differences-as-well-as-limitations-of-multiple-markers-available-to-assess-adult-neurogenesis
#16
Olesya T Shevchouk, Gregory F Ball, Charlotte A Cornil, Jacques Balthazart
In songbirds, neurogenesis in the song control nucleus HVC is sensitive to the hormonal and social environment but the dynamics of this process is difficult to assess with a single exogenous marker of new neurons. We simultaneously used three independent markers to investigate HVC neurogenesis in male and female canaries. Males were castrated, implanted with testosterone and housed either alone (M), with a female (M-F) or with another male (M-M) while females were implanted with 17β-estradiol and housed with a male (F-M)...
2017: PloS One
https://www.readbyqxmd.com/read/28124845/identification-of-neuron-related-genes-for-cell-therapy-of-neurological-disorders-by-network-analysis
#17
Li-Ning Su, Xiao-Qing Song, Hui-Ping Wei, Hai-Feng Yin
Bone mesenchymal stem cells (BMSCs) differentiated into neurons have been widely proposed for use in cell therapy of many neurological disorders. It is therefore important to understand the molecular mechanisms underlying this differentiation. We screened differentially expressed genes between immature neural tissues and untreated BMSCs to identify the genes responsible for neuronal differentiation from BMSCs. GSE68243 gene microarray data of rat BMSCs and GSE18860 gene microarray data of rat neurons were received from the Gene Expression Omnibus database...
2017: Journal of Zhejiang University. Science. B
https://www.readbyqxmd.com/read/28118619/characterization-of-nadph-diaphorase-and-doublecortin-positive-neurons-in-the-lizard-hippocampal-formation
#18
Matheus Macedo-Lima, Marco Aurélio M Freire, Hugo de Carvalho Pimentel, Lívia Cristina Rodrigues Ferreira Lins, Katty Anne Amador de Lucena Medeiros, Giordano Gubert Viola, José Ronaldo Dos Santos, Murilo Marchioro
The lizard cortex has remarkable similarities with the mammalian hippocampus. Both regions process memories, have similar cytoarchitectural properties, and are important neurogenic foci in adults. Lizards show striking levels of widespread neurogenesis in adulthood and can regenerate entire cortical areas after injury. Nitric oxide (NO) is an important regulatory factor of mammalian neurogenesis and hippocampal function. However, little is known about its role in nonmammalian neurogenesis. Here, we analyzed the distribution, morphology, and dendritic complexity (Neurolucida reconstructions) of NO-producing neurons through NADPH diaphorase (NADPHd) activity, and how they compare with the distribution of doublecortin-positive (DCX+) neurons in the hippocampal formation of the neotropical lizard Tropidurus hispidus...
2016: Brain, Behavior and Evolution
https://www.readbyqxmd.com/read/28115261/injection-of-sdf-1-loaded-nanoparticles-following-traumatic-brain-injury-stimulates-neural-stem-cell-recruitment
#19
Laura N Zamproni, Mayara V Mundim, Marimelia A Porcionatto, Anne des Rieux
Recruiting neural stem cell (NSC) at the lesion site is essential for central nervous system repair. This process could be triggered by the local delivery of the chemokine SDF-1. We compared two PLGA formulations for local brain SDF-1 delivery: SDF-1 loaded microspheres (MS) and SDF-1 loaded nanoparticles (NP). Both formulations were able to encapsulate more than 80% of SDF-1 but presented different release profiles, with 100% of SDF-1 released after 6days for the MS and with 25% of SDF-1 released after 2 weeks for NP...
March 15, 2017: International Journal of Pharmaceutics
https://www.readbyqxmd.com/read/28111255/delayed-treatment-of-6-bromoindirubin-3-oxime-stimulates-neurogenesis-and-functional-recovery-after-focal-ischemic-stroke-in-mice
#20
Li-Li Wang, Jimei Li, Xiaohuan Gu, Ling Wei, Shan Ping Yu
Glycogen synthase kinase 3β (GSK3β) was originally identified as a regulator for glycogen metabolism and is now an important therapeutic target for a variety of brain disorders including neurodegenerative diseases due to it's pivotal role in cellular metabolism, proliferation and differentiation. In the development of stroke therapies focusing on tissue repair and functional recovery, promoting neurogenesis is a main approach in regenerative medicine. In the present investigation, we explored the effects of a GSK3β specific inhibitor, 6-Bromoindirubin-3'-oxime (BIO), on regenerative activities of neuroblasts in the subventricular zone (SVZ) and functional recovery after focal cerebral ischemia...
April 2017: International Journal of Developmental Neuroscience
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