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https://www.readbyqxmd.com/read/29352772/neurotransmitters-and-receptors-changes-in-medial-nucleus-of-the-trapezoid-body-mntb-of-early-developmental-rats-with-single-side-deafness
#1
Jinsheng Dai, Jinfeng Liu, Mo Zhou, Wenjiao Wang, Zhi-Qing David Xu, Ningyu Wang
BACKGROUND Congenital single-side deafness (SSD) affects sound localization even after cochlear implantation (CI) in some conditions. The medial nucleus of the trapezoid body (MNTB) plays an important role in binaural benefit and sound localization, but little is known about intrinsic molecular changes in MNTB with SSD. We aimed to observe changes in MNTB in early-developmental SSD rats, including the key neurotransmitters (GABA, Gly, Glu) and major receptors (GABAa-R/GABAb-R for GABA, Gly-R for Gly, and AMPA/NMDA for Glu)...
January 20, 2018: Medical Science Monitor: International Medical Journal of Experimental and Clinical Research
https://www.readbyqxmd.com/read/29352746/the-common-bean-cok-4-and-the-arabidopsis-fer-kinase-domain-share-similar-function-in-plant-growth-and-defense
#2
Rafhael Felipin Azevedo, Maria Celeste Gonçalves Vidigal, Paula Rodrigues Oblessuc, Maeli Melotto
Receptor-like kinases are membrane proteins that can be shared by diverse signaling pathways. Among them, the Arabidopsis thaliana FERONIA (FER) plays a role in the balance between distinct signals to control growth and defense. We have found that COK-4, a putative kinase encoded in the common bean anthracnose resistance locus Co-4 that is transcriptionally regulated during immune response, is highly similar to the kinase domain of FER. To assess whether COK-4 is a functional ortholog of FER, we expressed COK-4 in the wild type Col-0 and the fer-5 mutant of Arabidopsis and evaluated FER-associated traits...
January 20, 2018: Molecular Plant Pathology
https://www.readbyqxmd.com/read/29352733/localization-of-palmitoylated-and-activated-g-protein-%C3%AE-subunit-in-dictyostelium-discoideum
#3
Sarah Alamer, Yusuke Kageyama, Robert E Gundersen
Guanine nucleotide-binding proteins (G proteins) act as molecular switches to regulate many fundamental cellular processes. The lipid modification, palmitoylation, can be considered as a key factor for proper G protein function and plasma membrane localization. In Dictyostelium discoidum, Gα2 is essential for the chemotactic response to cAMP in their developmental life cycle. However, the regulation of Gα2 with respect to palmitoylation, activation and Gβγ association is less clear. In this study, Gα2 is shown to be palmitoylated on Cys-4 by [3 H]palmitate labeling...
January 20, 2018: Journal of Cellular Biochemistry
https://www.readbyqxmd.com/read/29352731/induced-cumulus-expansion-of-poor-quality-buffalo-cumulus-oocyte-complexes-by-interleukin-1beta-improves-their-developmental-ability
#4
Gaurav Kumar Chaubey, Sandeep Kumar, Manish Kumar, Parul Sarwalia, Arumugam Kumaresan, Sachinandan De, Rakesh Kumar, Tirtha Kumar Datta
The present study was conceived with the aim of modulating the cumulus expansion characteristics of poor quality (BCB-) buffalo oocyte complexes (COCs) in order to improve their fertilization outcomes. BCB- COCs were subjected to in vitro maturation (IVM) in presence of Interleukin - 1 beta (IL-1β) along with BCB- (control) and good quality (BCB +) COCs. Results were assessed morphologically, by scanning electron microscopy (SEM) and by expression analysis of cumulus expansion related genes. Also, numbers of zona pellucida bound spermatozoa were counted and development rates of oocytes were monitored under different groups...
January 20, 2018: Journal of Cellular Biochemistry
https://www.readbyqxmd.com/read/29352511/draft-genome-and-reference-transcriptomic-resources-for-the-urticating-pine-defoliator-thaumetopoea-pityocampa-lepidoptera-notodontidae
#5
B Gschloessl, F Dorkeld, H Berges, G Beydon, O Bouchez, M Branco, A Bretaudeau, C Burban, E Dubois, P Gauthier, E Lhuillier, J Nichols, S Nidelet, S Rocha, L Sauné, R Streiff, M Gautier, C Kerdelhué
The pine processionary moth Thaumetopoea pityocampa (Lepidoptera: Notodontidae) is the main pine defoliator in the Mediterranean region. Its urticating larvae cause severe human and animal health concerns in the invaded areas. This species shows a high phenotypic variability for various traits, such as phenology, fecundity, and tolerance to extreme temperatures. This study presents the construction and analysis of extensive genomic and transcriptomic resources, which are an obligate prerequisite to understand their underlying genetic architecture...
January 20, 2018: Molecular Ecology Resources
https://www.readbyqxmd.com/read/29352468/developmental-plasticity-of-gabaergic-neurotransmission-to-brainstem-motoneurons
#6
Lila Buls Wollman, Richard B Levine, Ralph F Fregosi
Nicotinic acetylcholine receptor (nAChR) signalling regulates neuronal differentiation and synaptogenesis. Here we test the hypothesis that developmental nicotine exposure (DNE) disrupts the development of GABAergic synaptic transmission to hypoglossal motoneurons (XIIMNs). GABAergic spontaneous and miniature inhibitory postsynaptic currents (sIPSC/mIPSC) were recorded from XIIMNs in brainstem slices from control and DNE rat pups of either sex, 1-5 days old, at baseline and following acute stimulation of nAChRs with nicotine...
January 20, 2018: Journal of Physiology
https://www.readbyqxmd.com/read/29352451/involvement-of-tsukushi-in-diverse-developmental-processes
#7
Shah Adil Ishtiyaq Ahmad, Mohammad Badrul Anam, Naofumi Ito, Kunimasa Ohta
Tsukushi (TSK) is a small signaling molecule which takes part in different developmental processes of multiple vertebrate organisms. The diverse activity of TSK depends on its ability to bind various intermediate molecules from different major signaling pathways. Interactions of TSK with BMP, FGF, TGF-β and Wnt pathways have already been confirmed. In this review, we will introduce the latest information regarding the involvement of TSK in developmental events. We suggest a fine tuning role for TSK in multiple signaling cascades...
January 19, 2018: Journal of Cell Communication and Signaling
https://www.readbyqxmd.com/read/29352446/mycobacterium-marinum-infection-in-zebrafish-and-microglia-imitates-the-early-stage-of-tuberculous-meningitis
#8
Zhan Chen, Xiao-Yi Shao, Chao Wang, Min-Hui Hua, Cheng-Niu Wang, Xin Wang, Qian-Jin Wang, Jin-Yi Yao, Yi-Hui Fan, Yong-Wei Qin
Mycobacterium tuberculosis (M. tuberculosis) invading and activating microglia causes the most serious subtypes of tuberculosis called tubercular meningitis. However, the developmental process of tubercular meningitis, especially the early phase, is poorly understood due to lacking well-established and well-accepted visible models in vitro and in vivo. Here, consistent with one recent report, we found Mycobacterium marinum (M. marinum) invade the zebrafish brain and subsequently cause granuloma-like structures...
January 20, 2018: Journal of Molecular Neuroscience: MN
https://www.readbyqxmd.com/read/29352270/non-canonical-wnt-induces-chondrocyte-de-differentiation-through-frizzled-6-and-dvl-2-b-raf-camkii%C3%AE-syndecan-4-axis
#9
Zhe Xie, Mostafa Khair, Irfan Shaukat, Patrick Netter, Didier Mainard, Lydia Barré, Mohamed Ouzzine
Dysregulation of Wnt signaling has been implicated in developmental defects and in the pathogenesis of many diseases such as osteoarthritis; however, the underlying mechanisms are poorly understood. Here, we report that non-canonical Wnt signaling induced loss of chondrocyte phenotype through activation of Fz-6/DVL-2/SYND4/CaMKIIα/B-raf/ERK1/2 cascade. We show that in response to Wnt-3a, Frizzled 6 (Fz-6) triggers the docking of CaMKIIα to syndecan 4 (SYND4) and that of B-raf to DVL-2, leading to the phosphorylation of B-raf by CaMKIIα and activation of extracellular signal-regulated kinase 1 and 2 (ERK1/2) signaling, which leads to chondrocyte de-differentiation...
January 19, 2018: Cell Death and Differentiation
https://www.readbyqxmd.com/read/29352263/mammalian-endoreplication-emerges-to-reveal-a-potential-developmental-timer
#10
REVIEW
Alberto Gandarillas, Rut Molinuevo, Natalia Sanz-Gómez
Among the most intriguing and relevant questions in physiology is how developing tissues correctly coordinate proliferation with differentiation. Endoreplication, in a broad sense, is a consequence of a cell division block in the presence of an active cell cycle, and it typically occurs as cells differentiate terminally to fulfill a specialised function. Until recently, endoreplication was thought to be a rare variation of the cell cycle in mammals, more common in invertebrates and plants. However, in the last years, endoreplication has been uncovered in various tissues in mammalian organisms, including human...
January 19, 2018: Cell Death and Differentiation
https://www.readbyqxmd.com/read/29352236/control-of-neural-crest-induction-by-marveld3-mediated-attenuation-of-jnk-signalling
#11
Barbara Vacca, Elena Sanchez-Heras, Emily Steed, Sophie L Busson, Maria S Balda, Shin-Ichi Ohnuma, Noriaki Sasai, Roberto Mayor, Karl Matter
Tight junctions are required for the formation of tissue barriers and function as suppressors of signalling mechanisms that control gene expression and cell behaviour; however, little is known about the physiological and developmental importance of such signalling functions. Here, we demonstrate that depletion of MarvelD3, a transmembrane protein of tight junctions, disrupts neural crest formation and, consequently, development of neural crest-derived tissues during Xenopus embryogenesis. Using embryos and explant cultures combined with a small molecule inhibitor or mutant mRNAs, we show that MarvelD3 is required to attenuate JNK signalling during neural crest induction and that inhibition of JNK pathway activation is sufficient to rescue the phenotype induced by MarvelD3 depletion...
January 19, 2018: Scientific Reports
https://www.readbyqxmd.com/read/29352229/expression-dynamics-of-mirnas-and-their-targets-in-seed-germination-conditions-reveals-mirna-ta-sirna-crosstalk-as-regulator-of-seed-germination
#12
Shabari Sarkar Das, Sandeep Yadav, Archita Singh, Vibhav Gautam, Ananda K Sarkar, Asis K Nandi, Prakash Karmakar, Manoj Majee, Neeti Sanan-Mishra
Seed germination paves the way for the dormant embryo to establish itself as a new plant marking the first critical step in postembryonic plant growth and development. Germination starts with the uptake of water (imbibition), followed by induction of transcription, translation, energy metabolism, and cell division processes. Although small RNAs have been implicated in many developmental processes, their role during seed germination stages and conditions remained elusive. Here we show that seed germination conditions, like imbibition and temperature, dynamically regulate the expression of many developmentally important miRNAs and their targets...
January 19, 2018: Scientific Reports
https://www.readbyqxmd.com/read/29352193/degree-of-severity-of-molar-incisor-hypomineralization-and-its-relation-to-dental-caries
#13
A Negre-Barber, J M Montiel-Company, M Catalá-Pizarro, J M Almerich-Silla
Molar incisor hypomineralization is a developmental defect of dental enamel associated with rapid caries progression. In order to discover whether molar incisor hypomineralization predisposes to dental caries, a cross-sectional cohort study was conducted in a sample of 414 children aged between eight and nine years. It was found that 24.2% of the children presented molar incisor hypomineralization. Of these, 72% had a mild form and 28% a severe form. Caries prevalence was greater among the children with severe form (60...
January 19, 2018: Scientific Reports
https://www.readbyqxmd.com/read/29352183/environmental-enrichment-increases-transcriptional-and-epigenetic-differentiation-between-mouse-dorsal-and-ventral-dentate-gyrus
#14
Tie-Yuan Zhang, Christopher L Keown, Xianglan Wen, Junhao Li, Dulcie A Vousden, Christoph Anacker, Urvashi Bhattacharyya, Richard Ryan, Josie Diorio, Nicholas O'Toole, Jason P Lerch, Eran A Mukamel, Michael J Meaney
Early life experience influences stress reactivity and mental health through effects on cognitive-emotional functions that are, in part, linked to gene expression in the dorsal and ventral hippocampus. The hippocampal dentate gyrus (DG) is a major site for experience-dependent plasticity associated with sustained transcriptional alterations, potentially mediated by epigenetic modifications. Here, we report comprehensive DNA methylome, hydroxymethylome and transcriptome data sets from mouse dorsal and ventral DG...
January 19, 2018: Nature Communications
https://www.readbyqxmd.com/read/29352179/growth-and-remodeling-play-opposing-roles-during-postnatal-human-heart-valve-development
#15
Pim J A Oomen, Maria A Holland, Carlijn V C Bouten, Ellen Kuhl, Sandra Loerakker
Tissue growth and remodeling are known to govern mechanical homeostasis in biological tissue, but their relative contributions to homeostasis remain unclear. Here, we use mechanical models, fueled by experimental findings, to demonstrate that growth and remodeling have different effects on heart valve stretch homeostasis during physiological postnatal development. Two developmental stages were considered: early-stage (from infant to adolescent) and late-stage (from adolescent to adult) development. Our models indicated that growth and remodeling play opposing roles in preserving tissue stretch and with time...
January 19, 2018: Scientific Reports
https://www.readbyqxmd.com/read/29352131/early-impoverished-environment-delays-the-maturation-of-cerebral-cortex
#16
Roberta Narducci, Laura Baroncelli, Gabriele Sansevero, Tatjana Begenisic, Concetta Prontera, Alessandro Sale, Maria Cristina Cenni, Nicoletta Berardi, Lamberto Maffei
The influence of exposure to impoverished environments on brain development is unexplored since most studies investigated how environmental impoverishment affects adult brain. To shed light on the impact of early impoverishment on developmental trajectories of the nervous system, we developed a protocol of environmental impoverishment in which dams and pups lived from birth in a condition of reduced sensory-motor stimulation. Focusing on visual system, we measured two indexes of functional development, that is visual acuity, assessed by using Visual Evoked Potentials (VEPs), and VEP latency...
January 19, 2018: Scientific Reports
https://www.readbyqxmd.com/read/29352115/stil-balancing-primary-microcephaly-and-cancer
#17
REVIEW
Patwardhan Dhruti, Mani Shyamala, Passemard Sandrine, Gressens Pierre, El Ghouzzi Vincent
Cell division and differentiation are two fundamental physiological processes that need to be tightly balanced to achieve harmonious development of an organ or a tissue without jeopardizing its homeostasis. The role played by the centriolar protein STIL is highly illustrative of this balance at different stages of life as deregulation of the human STIL gene expression has been associated with either insufficient brain development (primary microcephaly) or cancer, two conditions resulting from perturbations in cell cycle and chromosomal segregation...
January 19, 2018: Cell Death & Disease
https://www.readbyqxmd.com/read/29352064/gif-transcriptional-co-regulators-control-root-meristem-homeostasis
#18
María Florencia Ercoli, Antonella Ferela, Juan M Debernardi, Ana Paula Perrone, Ramiro E Rodriguez, Javier Fernando Palatnik
In the root meristem, the quiescent center (QC) is surrounded by stem cells, which in turn generate the different cell types of the root. QC cells rarely divide under normal conditions but can replenish damaged stem cells. In the proximal meristem, the daughters of stem cells, which are referred to as transit amplifying cells, undergo additional rounds of cell division prior to differentiation. Here, we describe the functions of GRF-INTERACTING FACTORs (GIFs), including ANGUSTIFOLIA3 (AN3), in Arabidopsis thaliana roots...
January 18, 2018: Plant Cell
https://www.readbyqxmd.com/read/29352063/arabidopsis-thaliana-fancd2-promotes-meiotic-crossover-formation
#19
Marie-Therese Kurzbauer, Monica Pradillo, Claudia Kerzendorfer, Jason Sims, Rene Ladurner, Cecilia Oliver, Michael Peter Janisiw, Magdalena Mosiolek, Dieter Schweizer, Gregory P Copenhaver, Peter Schlogelhofer
Fanconi anemia (FA) is a human autosomal recessive disorder characterized by chromosomal instability, developmental pathologies, predisposition to cancer and reduced fertility. So far, nineteen genes have been implicated in FA, most of them involved in DNA repair. Some are conserved across higher eukaryotes, including plants. The Arabidopsis thaliana genome encodes a homologue of the Fanconi anemia D2 gene (FANCD2) whose function in DNA repair is not yet fully understood. Here we provide evidence that AtFANCD2 is required for meiotic homologous recombination...
January 19, 2018: Plant Cell
https://www.readbyqxmd.com/read/29352025/state-of-the-art-and-future-directions-for-extinction-as-a-translational-model-for-fear-and-anxiety
#20
REVIEW
Michelle G Craske, Dirk Hermans, Bram Vervliet
Through advances in both basic and clinical scientific research, Pavlovian fear conditioning and extinction have become an exemplary translational model for understanding and treating anxiety disorders. Discoveries in associative and neurobiological mechanisms underlying extinction have informed techniques for optimizing exposure therapy that enhance the formation of inhibitory associations and their consolidation and retrieval over time and context. Strategies that enhance formation include maximizing prediction-error correction by violating expectancies, deepened extinction, occasional reinforced extinction, attentional control and removal of safety signals/behaviours...
March 19, 2018: Philosophical Transactions of the Royal Society of London. Series B, Biological Sciences
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