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Molecular Neurobiology

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https://www.readbyqxmd.com/read/28108859/the-arc-gene-confers-genetic-susceptibility-to-alzheimer-s-disease-in-han-chinese
#1
Rui Bi, Li-Li Kong, Min Xu, Guo-Dong Li, Deng-Feng Zhang, Tao Li, Yiru Fang, Chen Zhang, Buchang Zhang, Yong-Gang Yao
Alzheimer's disease (AD) is the most common form of dementia. The deposition of β-amyloid (Aβ) plaques in the brain was considered one of the main neuropathological hallmarks of AD. As the loss of synapses always occurs during AD progression, AD has been gradually regarded as a "synaptopathy." The activity-regulated cytoskeleton-associated protein (Arc) was recently identified as a key factor for AD due to its active roles in synaptic plasticity, learning, memory, and Aβ generation. However, there is little evidence to support the association of the Arc gene with AD...
January 20, 2017: Molecular Neurobiology
https://www.readbyqxmd.com/read/28108858/retraction-note-to-the-clinical-utility-of-matrix-metalloproteinase-9-in-evaluating-pathological-grade-and-prognosis-of-glioma-patients-a-meta-analysis
#2
Xiangshan Yang, Shunzeng Lv, Yuting Liu, Daotang Li, Ranran Shi, Zhenyu Tang, Jianzhen Fan, Zhongfa Xu
No abstract text is available yet for this article.
January 20, 2017: Molecular Neurobiology
https://www.readbyqxmd.com/read/28108857/erratum-to-matrine-treatment-blocks-nogoa-induced-neural-inhibitory-signaling-pathway-in-ongoing-experimental-autoimmune-encephalomyelitis
#3
Quan-Cheng Kan, Hui-Jun Zhang, Yuan Zhang, Xing Li, Yu-Ming Xu, Rodolfo Thome, Ming-Liang Zhang, Nan Liu, Yao-Juan Chu, Guang-Xian Zhang, Lin Zhu
No abstract text is available yet for this article.
January 20, 2017: Molecular Neurobiology
https://www.readbyqxmd.com/read/28102473/the-role-of-glun2a-in-cerebral-ischemia-promoting-neuron-death-and-survival-in-the-early-stage-and-thereafter
#4
REVIEW
Yongjun Sun, Xiaokun Cheng, Jie Hu, Zibin Gao
Over-activation of NMDA receptors is a crucial step required for brain damage following a stroke. Although clinical trials for NMDA receptor blockers have failed, the role of GluN2A subunit in cerebral ischemia has been extensively evaluated in recent years. However, the effect of GluN2A on neuron damage induced by cerebral ischemia remains a matter of controversy. The underlying reason may be that GluN2A mediates both pro-death and pro-survival effects. These two effects result from two mutually excluding pathways, Ca(2+) overload-dependent pro-death signaling and C-terminal-dependent pro-survival signaling, respectively...
January 19, 2017: Molecular Neurobiology
https://www.readbyqxmd.com/read/28102472/erratum-to-administration-of-17%C3%AE-estradiol-improves-motoneuron-survival-and-down-regulates-inflammasome-activation-in-male-sod1-g93a-als-mice
#5
Marius Heitzer, Sarah Kaiser, Mithila Kanagaratnam, Adib Zendedel, Philipp Hartmann, Cordian Beyer, Sonja Johann
No abstract text is available yet for this article.
January 19, 2017: Molecular Neurobiology
https://www.readbyqxmd.com/read/28102471/yorkie-regulates-neurodegeneration-through-canonical-pathway-and-innate-immune-response
#6
Sandeep Kumar Dubey, Madhu G Tapadia
Expansion of CAG repeats in certain genes has long been known to be associated with neurodegenerastion, but the quest to identity the underlying mechanisms is still on. Here, we analyzed the role of Yorkie, the coactivator of the Hippo pathway, and provide evidence to state that it is a robust genetic modifier of polyglutamine (PolyQ)-mediated neurodegeneration. Yorkie reduces the pathogenicity of inclusion bodies in the cell by activating cyclin E and bantam, rather than by preventing apoptosis through DIAP1...
January 19, 2017: Molecular Neurobiology
https://www.readbyqxmd.com/read/28102470/neuronal-ryanodine-receptors-in-development-and-aging
#7
REVIEW
Nawaf Abu-Omar, Jogita Das, Vivian Szeto, Zhong-Ping Feng
Ryanodine receptors (RyRs) are intracellular calcium-release channels found on the endoplasmic reticulum of all cells. All three RyR isoforms, RyR1-3, are expressed in the brain, with RyR2 predominating. RyRs are localized within the soma, axons, dendritic spines, and presynaptic terminals of neurons. RyRs are highly expressed in the cerebellum, hippocampus, olfactory region, basal ganglia, and cerebral cortex. During the physiological processes of development and aging, the intracellular calcium homeostasis is largely regulated by RyRs...
January 19, 2017: Molecular Neurobiology
https://www.readbyqxmd.com/read/28102469/lanosterol-suppresses-the-aggregation-and-cytotoxicity-of-misfolded-proteins-linked-with-neurodegenerative-diseases
#8
Arun Upadhyay, Ayeman Amanullah, Ribhav Mishra, Amit Kumar, Amit Mishra
Accumulation of misfolded or aberrant proteins in neuronal cells is linked with neurodegeneration and other pathologies. Which molecular mechanisms fail and cause inappropriate folding of proteins and what is their relationship to cellular toxicity is not well known. How does it happen and what are the probable therapeutic or molecular approaches to counter them are also not clear. Here, we demonstrate that treatment of lanosterol diminishes aberrant proteotoxic aggregation and mitigates their cytotoxicity via induced expression of co-chaperone CHIP and elevated autophagy...
January 19, 2017: Molecular Neurobiology
https://www.readbyqxmd.com/read/28102468/mutation-of-the-herc-1-ubiquitin-ligase-impairs-associative-learning-in-the-lateral-amygdala
#9
Eva Mª Pérez-Villegas, José V Negrete-Díaz, Mª Elena Porras-García, Rocío Ruiz, Angel M Carrión, Antonio Rodríguez-Moreno, José A Armengol
Tambaleante (tbl/tbl) is a mutant mouse that carries a spontaneous Gly483Glu substitution in the HERC1 (HECT domain and RCC1 domain) E3 ubiquitin ligase protein (HERC1). The tbl/tbl mutant suffers an ataxic syndrome given the almost complete loss of cerebellar Purkinje cells during adult life. More recent analyses have identified alterations at neuromuscular junctions in these mice, as well as in other neurons of the central nervous system, such as motor neurons in the spinal cord, or pyramidal neurons in the hippocampal CA3 region and the neocortex...
January 19, 2017: Molecular Neurobiology
https://www.readbyqxmd.com/read/28101814/arbutus-andrachne-l-reverses-sleep-deprivation-induced-memory-impairments-in-rats
#10
Karem H Alzoubi, Bayan S Malkawi, Omar F Khabour, Tamam El-Elimat, Feras Q Alali
Sleep deprivation (SD) is associated with cognitive deficits. It was found to affect the hippocampus region of the brain by impairing memory formation. This impairment is suggested to be caused by elevation in oxidative stress in the body, including the brain during SD. It was hypothesized that the methanolic extract of the fruits of Arbutus andrachne L. (Ericaceae) will prevent chronic SD-induced impairment of hippocampal memory via its antioxidative properties. The methanolic extract of the fruits of A. andrachne was evaluated for its beneficial properties to reverse SD-induced cognitive impairment in rats...
January 18, 2017: Molecular Neurobiology
https://www.readbyqxmd.com/read/28097475/svct2-is-expressed-by-cerebellar-precursor-cells-which-differentiate-into-neurons-in-response-to-ascorbic-acid
#11
Karina Oyarce, Carmen Silva-Alvarez, Luciano Ferrada, Fernando Martínez, Katterine Salazar, Francisco Nualart
Ascorbic acid (AA) is a known antioxidant that participates in a wide range of processes, including stem cell differentiation. It enters the cell through the sodium-ascorbate co-transporter SVCT2, which is mainly expressed by neurons in the adult brain. Here, we have characterized SVCT2 expression in the postnatal cerebellum in situ, a model used for studying neurogenesis, and have identified its expression in granular precursor cells and mature neurons. We have also detected SVCT2 expression in the cerebellar cell line C17...
January 17, 2017: Molecular Neurobiology
https://www.readbyqxmd.com/read/28097474/igf-1r-regulates-the-extracellular-level-of-active-mmp-2-pathological-neovascularization-and-functionality-in-retinas-of-oir-mouse-model
#12
Valeria E Lorenc, Paula V Subirada Caldarone, María C Paz, Darío G Ferrer, José D Luna, Gustavo A Chiabrando, María C Sánchez
In ischemic proliferative diseases such as retinopathies, persistent hypoxia leads to the release of numerous neovascular factors that participate in the formation of abnormal vessels and eventually cause blindness. The upregulation and activation of metalloproteinases (MMP-2 and MMP-9) represent a final common pathway in this process. Although many regulators of the neovascular process have been identified, the complete role of the insulin-like growth factor 1 (IGF-1) and its receptor (IGF-1R) appears to be significantly more complex...
January 17, 2017: Molecular Neurobiology
https://www.readbyqxmd.com/read/28092089/time-dependent-lactate-production-and-amino-acid-utilization-in-cultured-astrocytes-under-high-glucose-exposure
#13
Dan Wang, Liangcai Zhao, Hong Zheng, Minjian Dong, Linlin Pan, Xi Zhang, Huajie Zhang, Hongchang Gao
Accumulating investigations have focused on the severity of central nervous system (CNS) complications in diabetic patients. The effects of the high glucose (HG) probably attribute to the metabolic disturbances in CNS. Astrocytes, with powerful ability of metabolic regulation, play crucial roles in physiological and pathological processes in CNS. Hence, an in-depth analysis as to metabolic alterations of astrocytes exposure to HG would facilitate to explore the underlying pathogenesis. In this study, the (1)H NMR-based metabonomic approach was performed to characterize the metabolic variations of intracellular metabolites and corresponding culture media in a time-dependent manner...
January 16, 2017: Molecular Neurobiology
https://www.readbyqxmd.com/read/28092088/erratum-to-dihydromyricetin-improves-hypobaric-hypoxia-induced-memory-impairment-via-modulation-of-sirt3-signaling
#14
Peng Liu, Dan Zou, Ka Chen, Qicheng Zhou, Yanxiang Gao, Yujie Huang, Jundong Zhu, Qianyong Zhang, Mantian Mi
No abstract text is available yet for this article.
January 16, 2017: Molecular Neurobiology
https://www.readbyqxmd.com/read/28092087/retraction-note-to-the-impact-of-survivin-on-prognosis-and-clinicopathology-of-glioma-patients-a-systematic-meta-analysis
#15
Shunzeng Lv, Congxin Dai, Yuting Liu, Ranran Shi, Zhenyu Tang, Mingzhi Han, Ruixiang Bian, Bowen Sun, Renzhi Wang
No abstract text is available yet for this article.
January 16, 2017: Molecular Neurobiology
https://www.readbyqxmd.com/read/28092086/anxiety-related-behaviours-associated-with-microrna-206-3p-and-bdnf-expression-in-pregnant-female-mice-following-psychological-social-stress
#16
Zhuang Miao, Fengbiao Mao, Jialong Liang, Moshe Szyf, Yan Wang, Zhong Sheng Sun
Stress during pregnancy can induce various psychological disorders in women. However, the association linking psychological stress during pregnancy with abnormal behaviours in females remains largely unknown. We employed a novel psychological stress model by introducing pregnant mice to witness the defeat process of their mated partner (WDPMP) and examined the effects of WDPMP on depression-/anxiety-like behaviours and on the expression of brain-derived neurotrophic factor (BDNF) and miR-206-3p in the hippocampus, medial prefrontal cortex (mPFC) and amygdala...
January 14, 2017: Molecular Neurobiology
https://www.readbyqxmd.com/read/28092085/evidence-that-nf-%C3%AE%C2%BAb-and-mapk-signaling-promotes-nlrp-inflammasome-activation-in-neurons-following-ischemic-stroke
#17
David Yang-Wei Fann, Yun-An Lim, Yi-Lin Cheng, Ker-Zhing Lok, Prasad Chunduri, Sang-Ha Baik, Grant R Drummond, S Thameem Dheen, Christopher G Sobey, Dong-Gyu Jo, Christopher Li-Hsian Chen, Thiruma V Arumugam
Multi-protein complexes, termed "inflammasomes," are known to contribute to neuronal cell death and brain injury following ischemic stroke. Ischemic stroke increases the expression and activation of nucleotide-binding oligomerization domain (NOD)-like receptor (NLR) Pyrin domain containing 1 and 3 (NLRP1 and NLRP3) inflammasome proteins and both interleukin (IL)-1β and IL-18 in neurons. In this study, we provide evidence that activation of either the NF-κB and MAPK signaling pathways was partly responsible for inducing the expression and activation of NLRP1 and NLRP3 inflammasome proteins and that these effects can be attenuated using pharmacological inhibitors of these two pathways in neurons and brain tissue under in vitro and in vivo ischemic conditions, respectively...
January 14, 2017: Molecular Neurobiology
https://www.readbyqxmd.com/read/28092084/iron-availability-compromises-not-only-oligodendrocytes-but-also-astrocytes-and-microglial-cells
#18
Maria Victoria Rosato-Siri, Leandro Marziali, María Eugenia Guitart, Maria Elvira Badaracco, Mariana Puntel, Fernando Pitossi, Jorge Correale, Juana Maria Pasquini
When disrupted, iron homeostasis negatively impacts oligodendrocyte (OLG) differentiation and impairs myelination. To better understand myelin formation and OLG maturation, in vivo and in vitro studies were conducted to evaluate the effect of iron deficiency (ID) not only on OLG maturation but also on astrocytes (AST) and microglial cells (MG). In vivo experiments in an ID model were carried out to describe maturational events during OLG and AST development and the reactive profile of MG during myelination when iron availability is lower than normal...
January 14, 2017: Molecular Neurobiology
https://www.readbyqxmd.com/read/28092083/role-of-dopamine-d2-d3-receptors-in-development-plasticity-and-neuroprotection-in-human-ipsc-derived-midbrain-dopaminergic-neurons
#19
Federica Bono, Paola Savoia, Adele Guglielmi, Massimo Gennarelli, Giovanna Piovani, Sandra Sigala, Damiana Leo, Stefano Espinoza, Raul R Gainetdinov, Paola Devoto, PierFranco Spano, Cristina Missale, Chiara Fiorentini
The role of dopamine D2 and D3 receptors (D2R/D3R), located on midbrain dopaminergic (DA) neurons, in the regulation of DA synthesis and release and in DA neuron homeostasis has been extensively investigated in rodent animal models. By contrast, the properties of D2R/D3R in human DA neurons have not been elucidated yet. On this line, the use of human-induced pluripotent stem cells (hiPSCs) for producing any types of cells has offered the innovative opportunity for investigating the human neuronal phenotypes at the molecular levels...
January 14, 2017: Molecular Neurobiology
https://www.readbyqxmd.com/read/28092082/brain-barrier-breakdown-as-a-cause-and-consequence-of-neuroinflammation-in-sepsis
#20
REVIEW
Lucineia Gainski Danielski, Amanda Della Giustina, Marwa Badawy, Tatiana Barichello, João Quevedo, Felipe Dal-Pizzol, Fabrícia Petronilho
The blood-brain barrier (BBB) and the blood-cerebrospinal fluid barrier (BCSFB) are important for the maintenance of brain homeostasis. During sepsis, peripheral production of proinflammatory cytokines and reactive oxygen species are responsible for structural alterations in those brain barriers. Thus, an increasing permeability of these barriers can lead to the activation of glial cells such as microglia and the production of cytotoxic mediators which in turn act on the brain barriers, damaging them further...
January 14, 2017: Molecular Neurobiology
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