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Developmental coordination

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https://www.readbyqxmd.com/read/28645799/genotype-phenotype-evaluation-of-med13l-defects-in-the-light-of-a-novel-truncating-and-a-recurrent-missense-mutation
#1
Reza Asadollahi, Markus Zweier, Laura Gogoll, Raphael Schiffmann, Heinrich Sticht, Katharina Steindl, Anita Rauch
A decade after the designation of MED13L as a gene and its link to intellectual disability (ID) and dextro-looped transposition of great arteries in 2003, we previously described a recognizable syndrome due to MED13L haploinsufficiency. Subsequent reports of 22 further patients diagnosed by genome-wide testing further delineated the syndrome with expansion of the phenotypic spectrum and showed reduced penetrance for congenital heart defects. We now report two novel patients identified by whole exome sequencing, one with a de novo MED13L truncating mutation and the other with a de novo missense mutation...
June 20, 2017: European Journal of Medical Genetics
https://www.readbyqxmd.com/read/28645749/a-population-of-g2-arrested-cells-are-selected-as-sensory-organ-precursors-for-the-interommatidial-bristles-of-the-drosophila-eye
#2
Joy H Meserve, Robert J Duronio
Cell cycle progression and differentiation are highly coordinated during the development of multicellular organisms. The mechanisms by which these processes are coordinated and how their coordination contributes to normal development are not fully understood. Here, we determine the developmental fate of a population of precursor cells in the developing Drosophila melanogaster retina that arrest in G2 phase of the cell cycle and investigate whether cell cycle phase-specific arrest influences the fate of these cells...
June 20, 2017: Developmental Biology
https://www.readbyqxmd.com/read/28643166/structural-disorder-in-plant-proteins-where-plasticity-meets-sessility
#3
REVIEW
Alejandra A Covarrubias, Cesar L Cuevas-Velazquez, Paulette S Romero-Pérez, David F Rendón-Luna, Caspar C C Chater
Plants are sessile organisms. This intriguing nature provokes the question of how they survive despite the continual perturbations caused by their constantly changing environment. The large amount of knowledge accumulated to date demonstrates the fascinating dynamic and plastic mechanisms, which underpin the diverse strategies selected in plants in response to the fluctuating environment. This phenotypic plasticity requires an efficient integration of external cues to their growth and developmental programs that can only be achieved through the dynamic and interactive coordination of various signaling networks...
June 22, 2017: Cellular and Molecular Life Sciences: CMLS
https://www.readbyqxmd.com/read/28637900/activation-of-mouse-tcrb-uncoupling-runx1-function-from-its-cooperative-binding-with-ets1
#4
Jiang-Yang Zhao, Oleg Osipovich, Olivia I Koues, Kinjal Majumder, Eugene M Oltz
T lineage commitment requires the coordination of key transcription factors (TFs) in multipotent progenitors that transition them away from other lineages and cement T cell identity. Two important TFs for the multipotent progenitors to T lineage transition are RUNX1 and ETS1, which bind cooperatively to composite sites throughout the genome, especially in regulatory elements for genes involved in T lymphopoiesis. Activation of the TCR β (Tcrb) locus in committed thymocytes is a critical process for continued development of these cells, and is mediated by an enhancer, Eβ, which harbors two RUNX-ETS composite sites...
June 21, 2017: Journal of Immunology: Official Journal of the American Association of Immunologists
https://www.readbyqxmd.com/read/28630356/developmental-downregulation-of-lis1-expression-limits-axonal-extension-and-allows-axon-pruning
#5
Kanako Kumamoto, Tokuichi Iguchi, Ryuichi Ishida, Takuya Uemura, Makoto Sato, Shinji Hirotsune
The robust axonal growth and regenerative capacities of young neurons decrease substantially with age. This developmental downregulation of axonal growth may facilitate axonal pruning and neural circuit formation but limits functional recovery following nerve damage. While external factors influencing axonal growth have been extensively investigated, relatively little is known about the intrinsic molecular changes underlying the age-dependent reduction in regeneration capacity. We report that developmental downregulation of LIS1 is responsible for the decreased axonal extension capacity of mature dorsal root ganglion (DRG) neurons...
June 19, 2017: Biology Open
https://www.readbyqxmd.com/read/28630354/not-all-cells-are-equal-effects-of-temperature-and-sex-on-the-size-of-different-cell-types-in-the-madagascar-ground-gecko-paroedura-picta
#6
Marcin Czarnoleski, Anna Maria Labecka, Zuzana Starostová, Anna Sikorska, Elżbieta Bonda-Ostaszewska, Katarzyna Woch, Lukáš Kubička, Lukáš Kratochvíl, Jan Kozlowski
Cell size plays a role in evolutionary and phenotypically plastic changes in body size. To examine this role, we measured the sizes of seven cell types of geckos (Paroedura picta) reared at three constant temperatures (24, 27, and 30 °C). Our results show that the cell size varies according to the body size, sex and developmental temperature, but the pattern of this variance depends on the cell type. We identified three groups of cell types, and the cell sizes changed in a coordinated manner within each group...
June 19, 2017: Biology Open
https://www.readbyqxmd.com/read/28627904/the-development-of-real-time-stability-supports-visual-working-memory-performance-young-children-s-feature-binding-can-be-improved-through-perceptual-structure
#7
Vanessa R Simmering, Chelsey M Wood
Working memory is a basic cognitive process that predicts higher-level skills. A central question in theories of working memory development is the generality of the mechanisms proposed to explain improvements in performance. Prior theories have been closely tied to particular tasks and/or age groups, limiting their generalizability. The cognitive dynamics theory of visual working memory development has been proposed to overcome this limitation. From this perspective, developmental improvements arise through the coordination of cognitive processes to meet demands of different behavioral tasks...
June 19, 2017: Developmental Psychology
https://www.readbyqxmd.com/read/28627423/severe-developmental-timing-defects-in-the-prothoracicotropic-hormone-ptth-deficient-silkworm-bombyx-mori
#8
Miwa Uchibori-Asano, Takumi Kayukawa, Hideki Sezutsu, Tetsuro Shinoda, Takaaki Daimon
The insect neuropeptide prothoracicotropic hormone (PTTH) triggers the biosynthesis and release of the molting hormone ecdysone in the prothoracic gland (PG), thereby controlling the timing of molting and metamorphosis. Despite the well-documented physiological role of PTTH and its signaling pathway in the PG, it is not clear whether PTTH is an essential hormone for ecdysone biosynthesis and development. To address this question, we established and characterized a PTTH knockout line in the silkworm, Bombyx mori...
June 13, 2017: Insect Biochemistry and Molecular Biology
https://www.readbyqxmd.com/read/28625683/a-developmental-and-clinical-perspective-of-rhythmic-interpersonal-coordination-from-mimicry-toward-the-interconnection-of-minds
#9
Jean Xavier, Julien Magnat, Alain Sherman, Soizic Gauthier, David Cohen, Laurence Chaby
Imitation plays a critical role in the development of intersubjectivity and serves as a prerequisite for understanding the emotions and intentions of others. In our review, we consider spontaneous motor imitation between children and their peers as a developmental process involving repetition and perspective-taking as well as flexibility and reciprocity. During childhood, this playful dynamic challenges developing visuospatial abilities and requires temporal coordination between partners. As such, we address synchrony as form of communication and social signal per se, that leads, from an experience of similarity, to the interconnexion of minds...
June 15, 2017: Journal of Physiology, Paris
https://www.readbyqxmd.com/read/28621569/down-regulation-of-slcyp1-in-the-phloem-reduces-auxin-response-and-photosynthetic-rate-in-tomato-solanum-lycopersicum-plants
#10
Ziv Spiegelman, Amit Shahar, Shmuel Wolf
The tomato dgt mutant, containing a single mutation in the Cyclophilin1 (SlCyp1) gene, is auxin insensitive and exhibits a pleotropic phenotype that includes lack of lateral roots, malformed xylem structure and reduced root-to-shoot ratio. Recently, we found that the SlCyp1 protein is phloem-mobile and traffic from shoot to root to induce lateral root formation. These processes are achieved through activation of auxin-mediated developmental programs. Inhibition of the trafficked SlCyp1 activity at the target site resulted in inhibition of the auxin response, supporting the hypothesis that this protein is indeed a mobile signal...
June 16, 2017: Plant Signaling & Behavior
https://www.readbyqxmd.com/read/28621420/the-retinal-pigmented-epithelium-from-basic-developmental-biology-research-to-translational-approaches
#11
Benjamin Amram, Yamit Cohen-Tayar, Ahuvit David, Ruth Ashery-Padan
The development of the eye has been a topic of extensive investigation, from the early studies on tissue induction to more recent breakthroughs in resolving the mechanism regulating progenitor patterning and their gradual and coordinated differentiation into diverse tissue types that function together throughout life. Among the ocular tissue types, the retinal pigmented epithelium (RPE) is at the forefront of developmental biology and stem cell research. The growing interest in this lineage stems from its importance for photoreceptor function as well as from its requirement during embryogenesis for the development of the photoreceptors and the choroid...
2017: International Journal of Developmental Biology
https://www.readbyqxmd.com/read/28621416/all-in-one-integrating-cell-polarity-meiosis-mitosis-and-mechanical-forces-in-early-oocyte-differentiation-in-vertebrates
#12
Yaniv M Elkouby
While the differentiation of oocytes is key for embryonic development, and its investigation is crucial for advancing our understanding of human reproduction and fertility, many fundamental questions in oogenesis have been long standing. However, recent technical advances have led to several breakthroughs mainly in mice and zebrafish. Here I review these recent findings, including regulation and organization of the germline cyst, the mechanistics of chromosomal pairing, establishment of cell polarity, and formation of a universal mRNA-protein (mRNP) granule called the Balbiani body...
2017: International Journal of Developmental Biology
https://www.readbyqxmd.com/read/28621415/building-functional-units-of-movement-generation-and-movement-sensation-in-the-embryo
#13
Peleg Hasson, Talila Volk, Adi Salzberg
The musculoskeletal and proprioceptive sensory systems exhibit intricate crosstalk between force generation, force sensation and force transmission, all of which are critical for coordinated animal locomotion. Recent developmental studies of the musculoskeletal and proprioceptive units of the invertebrate Drosophila embryo, have revealed several common molecular and structural principles mediating the formation of each of these systems. These common principles, as well as the differences between the developmental programs of the two systems, are discussed...
2017: International Journal of Developmental Biology
https://www.readbyqxmd.com/read/28619422/joint-engagement-in-infants-and-its-relationship-to-their-visual-impairment-measurements
#14
Andrea Urqueta Alfaro, Valerie S Morash, Daisy Lei, Deborah Orel-Bixler
Coordination of attention between a social partner and an external focus of shared interest, called joint engagement, is associated with positive developmental outcomes such as better language, socio-emotional, and theory of mind skills in sighted infants. Current measures of joint engagement rely on an infant's visual behaviors, making it difficult to study joint engagement in infants with low or no vision. In a naturalistic observational study, 20 infants with various levels of visual impairments - mean ages: 1...
June 12, 2017: Infant Behavior & Development
https://www.readbyqxmd.com/read/28613366/-transitional-psychiatry-in-the-netherlands-experiences-and-views-of-mental-health-professionals
#15
S E Gerritsen, G C Dieleman, M A C Beltman, A A M Tangenbergh, A Maras, T A M J van Amelsvoort, A L van Staa
Psychopathology manifests itself primarily in late adolescence and continues into adulthood. Continuity of care is essential during this phase of life. The current care service distinguishes between child/adolescent (CAMHS) and adult mental health services (AMHS). The separation of services can interfere with the continuity of care.<br/> AIM: To map professionals' experiences of and views on the transition and associated problems that young people can experience as they are transferred from CAMHS to AMHS...
2017: Tijdschrift Voor Psychiatrie
https://www.readbyqxmd.com/read/28607477/gabaa-receptor-subunit-gene-polymorphisms-predict-symptom-based-and-developmental-deficits-in-chinese-han-children-and-adolescents-with-autistic-spectrum-disorders
#16
Shuhan Yang, Xuan Guo, Xiaopeng Dong, Yu Han, Lei Gao, Yuanyuan Su, Wei Dai, Xin Zhang
GABAA receptor subunit genes GABRB3, GABRA5, and GABRG3 located on chromosome 15q11-q13 have been implicated in the etiology of autistic spectrum disorders (ASD). This study intended to investigate the possible role of single-nucleotide polymorphisms (SNPs) present in GABRB3 (rs2081648 and rs1426217), GABRA5 (rs35586628), and GABRG3 (rs208129) genes in ASD susceptibility and symptom-based and developmental phenotypes of ASD in Chinese Han children and adolescents. 99 ASD patients and 231 age- and gender- frequency-matched typical developing (TD) controls were tested by TaqMan® genotyping assay...
June 12, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28605602/role-of-primary-cilia-in-odontogenesis
#17
M Hampl, P Cela, H L Szabo-Rogers, M Kunova Bosakova, H Dosedelova, P Krejci, M Buchtova
Primary cilium is a solitary organelle that emanates from the surface of most postmitotic mammalian cells and serves as a sensory organelle, transmitting the mechanical and chemical cues to the cell. Primary cilia are key coordinators of various signaling pathways during development and maintenance of tissue homeostasis. The emerging evidence implicates primary cilia function in tooth development. Primary cilia are located in the dental epithelium and mesenchyme at early stages of tooth development and later during cell differentiation and production of hard tissues...
June 1, 2017: Journal of Dental Research
https://www.readbyqxmd.com/read/28603712/growth-rate-as-a-direct-regulator-of-the-start-network-to-set-cell-size
#18
REVIEW
Martí Aldea, Kirsten Jenkins, Attila Csikász-Nagy
Cells are able to adjust their growth and size to external inputs to comply with specific fates and developmental programs. Molecular pathways controlling growth also have an enormous impact in cell size, and bacteria, yeast, or epithelial cells modify their size as a function of growth rate. This universal feature suggests that growth (mass) and proliferation (cell number) rates are subject to general coordinating mechanisms. However, the underlying molecular connections are still a matter of debate. Here we review the current ideas on growth and cell size control, and focus on the possible mechanisms that could link the biosynthetic machinery to the Start network in budding yeast...
2017: Frontiers in Cell and Developmental Biology
https://www.readbyqxmd.com/read/28603711/autophagy-in-the-vertebrate-inner-ear
#19
REVIEW
Marta Magariños, Sara Pulido, María R Aburto, Rocío de Iriarte Rodríguez, Isabel Varela-Nieto
Autophagy is a conserved catabolic process that results in the lysosomal degradation of cell components. During development, autophagy is associated with tissue and organ remodeling, and under physiological conditions it is tightly regulated as it plays a housekeeping role in removing misfolded proteins and damaged organelles. The vertebrate inner ear is a complex sensory organ responsible for the perception of sound and for balance. Cell survival, death and proliferation, as well as cell fate specification and differentiation, are processes that are strictly coordinated during the development of the inner ear in order to generate the more than a dozen specialized cell types that constitute this structure...
2017: Frontiers in Cell and Developmental Biology
https://www.readbyqxmd.com/read/28600111/do-active-video-games-benefit-the-motor-skill-development-of-non-typically-developing-children-and-adolescents-a-systematic-review
#20
REVIEW
Zoey E Page, Stephanie Barrington, Jacqueline Edwards, Lisa M Barnett
OBJECTIVES: The use of interactive video gaming, known as 'exergames' or 'active video games (AVG)' may provide an opportunity for motor skill development. Youth with non-typical patterns of development may have deficits in gross motor skill capacities and are therefore an intervention target. The aim was to determine the effectiveness of AVG use on motor skill development in non-typically developing children and adolescents. DESIGN: Review article. METHODS: The PRISMA protocol was used to conduct a systematic review of EBSCOhost, Embase, Gale Cengage, Informit, Ovid, ProQuest, PubMed, Scopus and Web of Science databases...
May 18, 2017: Journal of Science and Medicine in Sport
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