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Developmental Dynamics: An Official Publication of the American Association of Anatomists

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https://www.readbyqxmd.com/read/28493325/developmental-ecology-of-annual-killifish-millerichthys-robustus-cyprinodontiformes-cynolebiidae
#1
REVIEW
Omar Domínguez-Castanedo, Stefano Valdesalici, Ana María Rosales-Torres
Populations of annual killifishes persist in temporary water bodies over the dry season through the expression of diapause in their drought resistant embryos. Environmental cues may influence expression of the diapause phenotype during embryonic incubation. Millerichthys robustus is the only annual killifish distributed in North America. The aim of this review is to analyze the ecology of M. robustus development and to contrast this with that of annual killifishes in austral locations. The temporary water bodies inhabited M...
May 10, 2017: Developmental Dynamics: An Official Publication of the American Association of Anatomists
https://www.readbyqxmd.com/read/28481428/embryonic-development-of-the-annual-killifish-austrofundulus-limnaeus-an-emerging-model-for-ecological-and-evolutionary-developmental-biology-research-and-instruction
#2
Jason E Podrabsky, Claire L Riggs, Amie L Romney, S Cody Woll, Josiah T Wagner, Kristin M Culpepper, Timothy G Cleaver
BACKGROUND: Austrofundulus limnaeus is an annual killifish from the Maracaibo basin of Venezuela. Annual killifishes are unique among vertebrates in their ability to enter into a state of dormancy at up to three distinct developmental stages termed diapause I, II, and III. These embryos are tolerant of a wide variety of environmental stresses and develop relatively slowly compared with nonannual fishes. RESULTS: These traits make them an excellent model for research on interactions between the genome and the environment during development, and an excellent choice for developmental biology laboratories...
May 8, 2017: Developmental Dynamics: An Official Publication of the American Association of Anatomists
https://www.readbyqxmd.com/read/28480986/the-murine-lens-a-model-to-investigate-in-vivo-epithelial-mesenchymal-transition
#3
REVIEW
Kumi Shirai, Sai-Ichi Tanaka, Frank J Lovicu, Shizuya Saika
Epithelial-mesenchymal transition (EMT) produces myofibroblasts that contribute to the formation of fibrotic tissue with an impairment of tissue homeostasis and functionality. The crystalline lens of the eye is a unique transparent and isolated tissue. The lens vesicle becomes isolated from the surface ectoderm, its cells are all contained as they line the inner surface of the lens capsule. Clinically the formation of fibrotic tissue by the lens epithelial cells causes a type of cataract or opacification and contraction of the lens capsule post-cataract surgery...
May 8, 2017: Developmental Dynamics: An Official Publication of the American Association of Anatomists
https://www.readbyqxmd.com/read/28474848/tissue-growth-pressure-drives-early-blood-flow-in-the-chicken-yolk-sac
#4
Raphaël Clément, Benjamin Mauroy, Annemiek J M Cornelissen
Background - Understanding how molecular and physical cues orchestrate vascular morphogenesis is a challenge for developmental biology. Only little attention has been paid to the impact of mechanical stress caused by tissue growth on early blood distribution. Here we study the peripheral accumulation of blood in the chicken embryonic yolk sac, which precedes sinus vein formation. Results - We report that blood accumulation starts prior to heart-induced blood circulation. We hypothesized that the driving force for the primitive blood flow is a growth-induced gradient of tissue pressure in the yolk sac mesoderm...
May 5, 2017: Developmental Dynamics: An Official Publication of the American Association of Anatomists
https://www.readbyqxmd.com/read/28474787/cadherin-interplay-during-neural-crest-segregation-from-the-non-neural-ectoderm-and-neural-tube-in-the-early-chick-embryo
#5
Alwyn Dady, Jean-Loup Duband
BACKGROUND: In the avian embryo, neural crest (NC) progenitors arise in the neuroectoderm during gastrulation, long before their dissemination. Although the gene regulatory network involved in NC specification has been deciphered, the mechanisms involved in their segregation from the other neuroectoderm-derived progenitors, notably the epidermis and neural tube, are unknown. Because cadherins mediate cell recognition and sorting, we scrutinized their expression profiles during NC specification and delamination...
May 5, 2017: Developmental Dynamics: An Official Publication of the American Association of Anatomists
https://www.readbyqxmd.com/read/28470714/fibroblast-growth-factor-mediated-cross-talk-in-cancer-aetiology-and-treatment
#6
N S Clayton, A S Wilson, E P Laurent, R P Grose, E P Carter
No abstract text is available yet for this article.
May 3, 2017: Developmental Dynamics: An Official Publication of the American Association of Anatomists
https://www.readbyqxmd.com/read/28470690/diverse-roles-for-the-ror-family-receptor-tyrosine-kinases-in-neurons-and-glial-cells-during-development-and-repair-of-the-nervous-system
#7
REVIEW
Mitsuharu Endo, Yasuhiro Minami
The Ror-family of receptor tyrosine kinases (RTKs) are involved critically in tissue-genesis and organo-genesis during development. In mammals, Ror1 and Ror2, members of the Ror-family RTKs, have been shown to mediate cell polarity, migration, proliferation, and differentiation through the activation of non-canonical Wnt signaling by acting as receptors or co-receptors for Wnt5a. Nematodes bearing mutations within the cam-1 gene, encoding a Ror2 ortholog, exhibit defects in various developmental processes of the nervous system, including neuronal cell migration, polarization, axonal extension, and synaptic transmission...
May 3, 2017: Developmental Dynamics: An Official Publication of the American Association of Anatomists
https://www.readbyqxmd.com/read/28440030/-identification-of-target-genes-downstream-of-semaphorin6a-plexina2-signaling-in-zebrafish
#8
Sarah E Emerson, Riley M St Clair, Ashley L Waldron, Sierra R Bruno, Anna Duong, Heather E Driscoll, Bryan A Ballif, Sarah McFarlane, Alicia M Ebert
BACKGROUND: Semaphorin (Sema)/Plexin (Plxn) signaling is important for many aspects of neuronal development, however the transcriptional regulation imposed by this signaling pathway is unknown. Previously, we identified an essential role for Sema6A/PlxnA2 signaling in regulating proliferation and cohesion of retinal precursor cells (RPCs) during early eye development. This study used RNA isolated from control, Sema6A-deficient, and PlxnA2-deficient zebrafish embryos in a microarray analysis to identify genes that were differentially expressed when this signaling pathway was disrupted...
April 25, 2017: Developmental Dynamics: An Official Publication of the American Association of Anatomists
https://www.readbyqxmd.com/read/28422453/how-many-roads-lead-to-cohesinopathies
#9
REVIEW
Rajeswari Banerji, Robert V Skibbens, M Kathryn Iovine
No abstract text is available yet for this article.
April 19, 2017: Developmental Dynamics: An Official Publication of the American Association of Anatomists
https://www.readbyqxmd.com/read/28422363/the-occhiolino-occ-mutant-zebrafish-a-model-for-development-of-the-optical-function-in-the-biological-lens
#10
Masamoto Aose, Tor H Linbo, Owen Lawrence, Tadashi Senoo, David W Raible, John I Clark
BACKGROUND: Zebrafish visual function depends on quality optics. An F3 screen for developmental mutations in the zebrafish nervous system was conducted in wild-type (wt) AB zebrafish exposed to 3 mM of N-ethyl-N-nitrosourea (ENU). RESULTS: Mutant offspring, identified in an F3 screen, were characterized by a small pupil, resulting from retinal hypertrophy or hyperplasia and a small lens. Deficits in visual function made feeding difficult after hatching at approximately 5-6 dpf (days post fertilization)...
April 19, 2017: Developmental Dynamics: An Official Publication of the American Association of Anatomists
https://www.readbyqxmd.com/read/28411398/bud-detachment-in-hydra-requires-activation-of-fgfr-and-a-rho-rock-myosin-ii-signaling-pathway-to-ensure-formation-of-a-basal-constriction
#11
Oliver Holz, David Apel, Patrick Steinmetz, Ellen Lange, Simon Hopfenmüller, Kerstin Ohler, Stefanie Sudhop, Monika Hassel
BACKGROUND: Hydra propagates asexually by exporting tissue into a bud, which detaches four days later as a fully differentiated young polyp. Prerequisite for detachment is activation of fibroblast growth factor receptor (FGFR) signaling. The mechanism which enables constriction and tissue separation within the monolayered ecto- and endodermal epithelia is unknown. RESULTS: Histological sections and staining of F-actin by phalloidin revealed conspicuous cell shape changes at the bud detachment site indicating a localized generation of mechanical forces and the potential enhancement of secretory functions in ectodermal cells...
April 15, 2017: Developmental Dynamics: An Official Publication of the American Association of Anatomists
https://www.readbyqxmd.com/read/28407437/hit-pause-developmental-arrest-in-annual-killifishes-and-their-close-relatives
#12
EDITORIAL
Karen Martin, Jason E Podrabsky
No abstract text is available yet for this article.
April 13, 2017: Developmental Dynamics: An Official Publication of the American Association of Anatomists
https://www.readbyqxmd.com/read/28407379/epithelial-mesenchymal-plasticity-and-circulating-tumor-cells-travel-companions-to-metastases
#13
REVIEW
Marie-Emilie Francart, Justine Lambert, Aline M Vanwynsberghe, Erik W Thompson, Morgane Bourcy, Myriam Polette, Christine Gilles
Epithelial-Mesenchymal Transitions (EMT) associated with metastatic progression may contribute to the generation of hybrid phenotypes capable of plasticity. This cellular plasticity would provide tumor cells with an increased potential to adapt to the different microenvironments encountered during metastatic spread. Understanding how EMT may functionally equip Circulating Tumor Cells (CTCs) with an enhanced competence to survive in the blood stream and niche in the colonized organs has thus become a major cancer research axis...
April 13, 2017: Developmental Dynamics: An Official Publication of the American Association of Anatomists
https://www.readbyqxmd.com/read/28390160/the-role-of-small-gtpases-of-the-rho-rac-family-in-tgf-%C3%AE-induced-emt-and-cell-motility-in-cancer
#14
REVIEW
Hendrik Ungefroren, David Witte, Hendrik Lehnert
BACKGROUND: This article focusses on the role of Rho family GTPases and particularly Rac1 and Rac1b in TGF-β-induced epithelial-mesenchymal transition (EMT) and EMT-associated responses such as cell migration, invasion, and metastasis in cancer. RESULTS: EMT is considered a prerequisite for cells to adopt a motile and invasive phenotype and eventually become metastatic. A major regulator of EMT and metastasis in cancer is TGF-β and its specific functions on tumor cells are mediated besides Smad proteins and mitogen-activated protein kinases (MAPKs) by small GTPases of the Rho/Rac1 family...
April 8, 2017: Developmental Dynamics: An Official Publication of the American Association of Anatomists
https://www.readbyqxmd.com/read/28387983/pten-facilitates-epiblast-epithelial-polarization-and-proamniotic-lumen-formation-in-early-mouse-embryos
#15
Yue Meng, Kathy Q Cai, Robert Moore, Wensi Tao, Jeffrey D Tse, Elizabeth R Smith, Xiang-Xi Xu
BACKGROUND: Phosphatase and tensin homologue on chromosome 10 (Pten), a lipid phosphatase originally identified as a tumor-suppressor gene, regulates the phosphoinositol 3 kinase signaling pathway and impacts cell death and proliferation. Pten mutant embryos die at early stages of development, though the particular developmental deficiency and the mechanisms are not yet fully understood. RESULTS: We analyzed Pten mutant embryos in detail and found that the formation of the proamniotic cavity is impaired...
April 7, 2017: Developmental Dynamics: An Official Publication of the American Association of Anatomists
https://www.readbyqxmd.com/read/28387977/ex-vivo-analysis-of-the-contribution-of-fgf10-cells-to-airway-smooth-muscle-cell-formation-during-early-lung-development
#16
Elie El Agha, Vahid Kheirollahi, Alena Moiseenko, Werner Seeger, Saverio Bellusci
BACKGROUND: Airway smooth muscle cells (ASMCs) have been widely studied during embryonic lung development. These cells have been shown to control epithelial bifurcation during branching morphogenesis. Fibroblast growth factor 10-positive (FGF10(+) ) cells, originally residing in the submesothelial mesenchyme, contribute to ASMC formation in the distal lung. The reported work aims at monitoring the response of FGF10(+) progenitors and differentiated ASMCs to growth factor treatment in real time using lineage tracing in the background of an air-liquid interface culture system...
April 7, 2017: Developmental Dynamics: An Official Publication of the American Association of Anatomists
https://www.readbyqxmd.com/read/28316133/hatching-date-variability-in-wild-populations-of-four-coexisting-species-of-african-annual-fishes
#17
Martin Reichard, Radim Blažek, Matej Polačik, Milan Vrtílek
BACKGROUND: Hatching is modulated by a combination of intrinsic and extrinsic factors. Annual killifish are adapted to complete their entire life cycle in annually desiccating habitats. Spending most of their life in the embryonic stage, they have evolved adaptations to survive desiccated conditions and match their hatching with the unpredictable onset of the aquatic phase of the pool. We examined spatial and temporal synchrony of hatching in natural populations of four species of African annual killifish (genus Nothobranchius)...
March 18, 2017: Developmental Dynamics: An Official Publication of the American Association of Anatomists
https://www.readbyqxmd.com/read/28249360/heart-function-and-hemodynamics-analysis-for-zebrafish-embryos
#18
REVIEW
Huseyin C Yalcin, Armin Amindari, Jonathan T Butcher, Asma Althani, Magdi Yacoub
The zebrafish has emerged to become a powerful vertebrate animal model for cardiovascular research in recent years. Its advantages include easy genetic manipulation, transparency, small size, low cost, and the ability to survive without active circulation at early stages of development. Sequencing the whole genome and identifying orthologue genes with human genome enabled to induce clinically relevant cardiovascular defects via genetic approaches. Heart function and disturbed hemodynamics need to be assessed in a reliable manner for these disease models in order to reveal mechanobiology of induced defects...
March 1, 2017: Developmental Dynamics: An Official Publication of the American Association of Anatomists
https://www.readbyqxmd.com/read/28249357/gastrulation-in-an-annual-killifish-molecular-and-cellular-events-during-germ-layer-formation-in-austrolebias
#19
Luisa Pereiro, Felix Loosli, Juan Fernández, Steffen Härtel, Joachim Wittbrodt, Miguel L Concha
BACKGROUND: Comparative studies beyond the traditional model organisms have been instrumental in enhancing our understanding of the conserved and derived features of gastrulation, a fundamental process in which the germ layers are specified and shaped to form the body axis. Here, we analysed gastrulation in a vertebrate group with an extreme mode of early development, the annual killifish. RESULTS: Gastrulation in annual killifish of the genus Austrolebias takes place after the initially dispersed deep blastomeres congregate to form the so-called reaggregate...
March 1, 2017: Developmental Dynamics: An Official Publication of the American Association of Anatomists
https://www.readbyqxmd.com/read/28245533/neuregulin1-fine-tunes-pre-post-and-perisynaptic-neuromuscular-junction-development
#20
Jiajing Wang, Fei Song, Jeffrey A Loeb
BACKGROUND: Neuromuscular junction (NMJ) development is a multistep process mediated by coordinated interactions between the nerve terminal, target muscle, and perisynaptic Schwann cell that require constant back-and-forth communication. Retrograde and anterograde growth and differentiation factors have been postulated to participate in this communication. While neuregulin1 (NRG1) has been shown to be potent anterograde signal that activates acetylcholine receptor (AChR) transcription and clustering in vitro, its roles in NMJ development in vivo remain elusive...
February 28, 2017: Developmental Dynamics: An Official Publication of the American Association of Anatomists
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