Auswahl der wissenschaftlichen Literatur zum Thema „Head mesoderm“

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Zeitschriftenartikel zum Thema "Head mesoderm"

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Yin, Z., X. L. Xu, and M. Frasch. "Regulation of the twist target gene tinman by modular cis-regulatory elements during early mesoderm development." Development 124, no. 24 (1997): 4971–82. http://dx.doi.org/10.1242/dev.124.24.4971.

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The Drosophila tinman homeobox gene has a major role in early mesoderm patterning and determines the formation of visceral mesoderm, heart progenitors, specific somatic muscle precursors and glia-like mesodermal cells. These functions of tinman are reflected in its dynamic pattern of expression, which is characterized by initial widespread expression in the trunk mesoderm, then refinement to a broad dorsal mesodermal domain, and finally restricted expression in heart progenitors. Here we show that each of these phases of expression is driven by a discrete enhancer element, the first being acti
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Halpern, M. E., C. Thisse, R. K. Ho, et al. "Cell-autonomous shift from axial to paraxial mesodermal development in zebrafish floating head mutants." Development 121, no. 12 (1995): 4257–64. http://dx.doi.org/10.1242/dev.121.12.4257.

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Zebrafish floating head mutant embryos lack notochord and develop somitic muscle in its place. This may result from incorrect specification of the notochord domain at gastrulation, or from respecification of notochord progenitors to form muscle. In genetic mosaics, floating head acts cell autonomously. Transplanted wild-type cells differentiate into notochord in mutant hosts; however, cells from floating head mutant donors produce muscle rather than notochord in wild-type hosts. Consistent with respecification, markers of axial mesoderm are initially expressed in floating head mutant gastrulas
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Kusch, T., and R. Reuter. "Functions for Drosophila brachyenteron and forkhead in mesoderm specification and cell signalling." Development 126, no. 18 (1999): 3991–4003. http://dx.doi.org/10.1242/dev.126.18.3991.

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The visceral musculature of the larval midgut of Drosophila has a lattice-type structure and consists of an inner stratum of circular fibers and an outer stratum of longitudinal fibers. The longitudinal fibers originate from the posterior tip of the mesoderm anlage, which has been termed the caudal visceral mesoderm (CVM). In this study, we investigate the specification of the CVM and particularly the role of the Drosophila Brachyury-homologue brachyenteron. Supported by fork head, brachyenteron mediates the early specification of the CVM along with zinc-finger homeodomain protein-1. This is t
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Noden, Drew M. "Interactions and fates of avian craniofacial mesenchyme." Development 103, Supplement (1988): 121–40. http://dx.doi.org/10.1242/dev.103.supplement.121.

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Craniofacial mesenchyme is composed of three mesodermal populations – prechordal plate, lateral mesoderm and paraxial mesoderm, which includes the segmented occipital somites and the incompletely segmented somitomeres – and the neural crest. This paper outlines the fates of each of these, as determined using quail–chick chimaeras, and presents similarities and differences between these cephalic populations and their counterparts in the trunk. Prechordal and paraxial mesodermal populations are the sources of all voluntary muscles of the head. The latter also provides most of the connective prec
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Yamamoto, A., S. L. Amacher, S. H. Kim, D. Geissert, C. B. Kimmel, and E. M. De Robertis. "Zebrafish paraxial protocadherin is a downstream target of spadetail involved in morphogenesis of gastrula mesoderm." Development 125, no. 17 (1998): 3389–97. http://dx.doi.org/10.1242/dev.125.17.3389.

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Zebrafish paraxial protocadherin (papc) encodes a transmembrane cell adhesion molecule (PAPC) expressed in trunk mesoderm undergoing morphogenesis. Microinjection studies with a dominant-negative secreted construct suggest that papc is required for proper dorsal convergence movements during gastrulation. Genetic studies show that papc is a close downstream target of spadetail, gene encoding a transcription factor required for mesodermal morphogenetic movements. Further, we show that the floating head homeobox gene is required in axial mesoderm to repress the expression of both spadetail and pa
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Kofron, M., T. Demel, J. Xanthos, et al. "Mesoderm induction in Xenopus is a zygotic event regulated by maternal VegT via TGFbeta growth factors." Development 126, no. 24 (1999): 5759–70. http://dx.doi.org/10.1242/dev.126.24.5759.

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The maternal transcription factor VegT is important for establishing the primary germ layers in Xenopus. In previous work, we showed that the vegetal masses of embryos lacking maternal VegT do not produce mesoderm-inducing signals and that mesoderm formation in these embryos occurred ectopically, from the vegetal area rather than the equatorial zone of the blastula. Here we have increased the efficiency of the depletion of maternal VegT mRNA and have studied the effects on mesoderm formation. We find that maternal VegT is required for the formation of 90% of mesodermal tissue, as measured by t
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Bodmer, R., L. Y. Jan, and Y. N. Jan. "A new homeobox-containing gene, msh-2, is transiently expressed early during mesoderm formation of Drosophila." Development 110, no. 3 (1990): 661–69. http://dx.doi.org/10.1242/dev.110.3.661.

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Many homeobox-containing genes of Drosophila regulate pathways of differentiation. These proteins probably function as promoter- or enhancer-selective transcription factors. We have isolated a new homeobox-containing gene, msh-2, by means of the polymerase chain reactions (PCR) using redundant primers. msh-2 is specifically expressed in mesodermal primordia during a short time period early in development. It first appears at blastoderm stage just before the ventral invagination of the mesoderm and shortly after twist, a gene required for mesoderm formation, is expressed. During germband elonga
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Amaya, E., P. A. Stein, T. J. Musci, and M. W. Kirschner. "FGF signalling in the early specification of mesoderm in Xenopus." Development 118, no. 2 (1993): 477–87. http://dx.doi.org/10.1242/dev.118.2.477.

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We have examined the role of FGF signalling in the development of muscle and notochord and in the expression of early mesodermal markers in Xenopus embryos. Disruption of the FGF signalling pathway by expression of a dominant negative construct of the FGF receptor (XFD) generally results in gastrulation defects that are later evident in the formation of the trunk and tail, though head structures are formed nearly normally. These defects are reflected in the loss of notochord and muscle. Even in embryos that show mild defects and gastrulate properly, muscle formation is impaired, suggesting tha
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Kessler, D. S., and D. A. Melton. "Induction of dorsal mesoderm by soluble, mature Vg1 protein." Development 121, no. 7 (1995): 2155–64. http://dx.doi.org/10.1242/dev.121.7.2155.

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Mesoderm induction during Xenopus development has been extensively studied, and two members of the transforming growth factor-beta family, activin beta B and Vg1, have emerged as candidates for a natural inducer of dorsal mesoderm. Heretofore, analysis of Vg1 activity has relied on injection of hybrid Vg1 mRNAs, which have not been shown to direct efficient secretion of ligand and, therefore, the mechanism of mesoderm induction by processed Vg1 protein is unclear. This report describes injection of Xenopus oocytes with a chimeric activin-Vg1 mRNA, encoding the pro-region of activin beta B fuse
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Sun, B. I., S. M. Bush, L. A. Collins-Racie, et al. "derriere: a TGF-beta family member required for posterior development in Xenopus." Development 126, no. 7 (1999): 1467–82. http://dx.doi.org/10.1242/dev.126.7.1467.

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TGF-beta signaling plays a key role in induction of the Xenopus mesoderm and endoderm. Using a yeast-based selection scheme, we isolated derriere, a novel TGF-beta family member that is closely related to Vg1 and that is required for normal mesodermal patterning, particularly in posterior regions of the embryo. Unlike Vg1, derriere is expressed zygotically, with RNA localized to the future endoderm and mesoderm by late blastula, and to the posterior mesoderm by mid-gastrula. The derriere expression pattern appears to be identical to the zygotic expression domain of VegT (Xombi, Brat, Antipodea
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Dissertationen zum Thema "Head mesoderm"

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Velasco, Begona de. "The development of the neuroendocrine system and head mesoderm in Drosophila." Diss., Restricted to subscribing institutions, 2006. http://proquest.umi.com/pqdweb?did=1188872391&sid=1&Fmt=2&clientId=1564&RQT=309&VName=PQD.

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Jullian, Estelle. "Myogenic fate choice in the cardiopharyngeal mesoderm." Thesis, Aix-Marseille, 2019. http://www.theses.fr/2019AIXM0363.

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Le mésoderme cardiopharyngé (CPM) est localisé au niveau crânial de l’embryon de souris, et contribue aux muscles de la tête et du cou, dérivés des arcs pharyngés, et aux cellules progénitrices du second champ cardiaque qui donne naissance au muscle cardiaque. L’étude du CPM permet de comprendre les malformations congénitales cardiaques et crâniofaciales, comme celles observées chez les patients atteints du syndrome de microdélétion 22q11.2. Chez la souris, une analyse de clonale rétrospective a établi qu’il existe une relation clonale entre certaines parties du cœur, dérivant du second champ
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Sefton, Elizabeth Marie. "Evolution of the Amphibian Head and Neck: Fate and Patterning of Cranial Mesoderm in the Axolotl (Ambystoma Mexicanum)." Thesis, Harvard University, 2016. http://nrs.harvard.edu/urn-3:HUL.InstRepos:26718769.

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The vertebrate head is a complex structure derived from all three embryonic germ layers. Cranial mesoderm forms most of the neurocranium, cardiovascular tissues and voluntary muscles required for intake of food and oxygenated fluid. Despite its essential role in shaping cranial and neck anatomy, long-term fate maps of cranial mesoderm are known only from the mouse and chicken, as effective labeling techniques for use in other species have been developed only recently. Data from additional species are needed to determine the embryonic origin of features absent in amniotes but present in other v
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Gibert, Yann. "Zebrafish as a vertebrate model to study retinoic acid signalling in head mesoderm and pectoral fin development and to investigate non-ion channel epilepsies." [S.l. : s.n.], 2004. http://nbn-resolving.de/urn:nbn:de:bsz:352-opus-18235.

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Meister, Blanco Lydvina. "La somitogénèse chez les chordés et l’apparition de la tête chez les vertébrés." Electronic Thesis or Diss., Sorbonne université, 2021. http://www.theses.fr/2021SORUS144.

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Une question centrale dans l'histoire de l'évolution des vertébrés est de comprendre l'origine de leur tête complexe. L'apparition de nouvelles structures de la tête, telles que les cellules de la crête neurale, a déjà été longuement étudiée. Cependant, comment le mésoderme non segmenté de la tête chez les vertébrés a émergé à partir d’un mésoderme entièrement segmenté reste une question non résolue. En raison de leur position phylogénétique, de leurs caractéristiques morphologiques, développementales et génomiques, les céphalochordés (c'est-à-dire les amphioxus) représentent le meilleur proxy
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Grimaldi, Alexandre. "Fondements régulatoires de la diversité des muscles faciaux : origines développementales de la résilience musculaire." Electronic Thesis or Diss., Sorbonne université, 2020. https://accesdistant.sorbonne-universite.fr/login?url=https://theses-intra.sorbonne-universite.fr/2020SORUS244.pdf.

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Les muscles squelettiques sont présents dans tout le corps et présentent un niveau surprenant d'hétérogénéité, dans leur susceptibilité aux maladies, potentiel de régénération ou capacités métaboliques. Cette diversité est également retrouvée au cours du développement embryonnaire où les cellules myogéniques et non myogéniques établissent le système musculo-squelettique. La tête et le cou sont constitués d'une grande variété de muscles qui remplissent des fonctions essentielles, mais nous en savons peu sur la biologie des muscles craniofaciaux. Ces structures sont associées à l'émergence de ce
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Gibert, Yann [Verfasser]. "Zebrafish as a vertebrate model to study retinoic acid signaling in head mesoderm and pectoral fin development and to investigate non-ion channel epilepsies / vorgelegt von Yann Gibert." 2006. http://d-nb.info/980418585/34.

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Buchteile zum Thema "Head mesoderm"

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Seifert, Roswitha, Heinz Jürgen Jacob, and Monika Jacob. "Differentiation Capabilities of the Avian Prechordal Head Mesoderm." In Formation and Differentiation of Early Embryonic Mesoderm. Springer US, 1992. http://dx.doi.org/10.1007/978-1-4615-3458-7_6.

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Francis-West, P. H., L. Robson, and Darell J. R. Evans. "Fate and Roles of the Neural Crest, Mesoderm, and Epithelium." In Craniofacial Development The Tissue and Molecular Interactions That Control Development of the Head. Springer Berlin Heidelberg, 2003. http://dx.doi.org/10.1007/978-3-642-55570-1_3.

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Tickle, C., and M. Davey. "Laying Down The Vertebrate Body Plan." In Patterning in Vertebrate Development. Oxford University PressOxford, 2003. http://dx.doi.org/10.1093/oso/9780199638703.003.0002.

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Abstract How do different parts of the body arise in their proper positions in vertebrate embryos? In the first chapter, the principles of pattern formation were reviewed. This chapter outlines how the body plan is laid down, and provides the embryological background for the following chapters that deal in detail with patterning of mesoderm (Chapters 3 and 4), nervous system (Chapters 5, 6, 7, and 8), and limbs (Chapter 9) and the molecules involved. Laying down the body plan is essentially a matter of defining the main body axes: the anteroposterior axis (head to tail axis, sometimes known as
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Patel, Shreyaskumar R., and Robert S. Benjamin. "Clinical Aspects and Management of Gastrointestinal Sarcomas: Management Options: Unresectable or Metastatic Gastrointestinal Sarcomas." In Gastrointestinal Oncology. Oxford University PressNew York, NY, 2003. http://dx.doi.org/10.1093/oso/9780195133721.003.0070.

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Abstract Sarcomas are malignancies of mesenchymal tissue, derived principally from the mesoderm with some contribution from the neuroectoderm. These tumors are rare and constitute less than 1% of all cancers. The annual incidence of soft tissue sarcomas, as estimated by the American Cancer Society, is 8300 new cases in the United States for the year 2002.1 Approximately 60% of these soft tissue sarcomas originate in the extremities, 30% in the trunk, and 10% in the head and neck region. About 40% of the soft tissue sarcomas of the trunk actually originate in the retroperitoneum.
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anderson, Douglas, jerry m. Rhee,, and alan rawls. "Muscle and Somite Development." In Inborn Errors Of Development. Oxford University PressNew York, NY, 2008. http://dx.doi.org/10.1093/oso/9780195306910.003.0012.

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Abstract Vertebrate skeletal muscle is derived from paraxial and head mesoderm that appears on either side of the neural tube during gastrulation. A fundamental understanding of the cellular events associated with myogenesis has been well established through classic embryological studies in the chicken and mouse model systems. The 7rst appearance of myogenic cells is within individual somites derived from paraxial mesoderm. During embryonic development, these cells must undergo rapid expansion, migration, differentiation, and remodeling in order to generate the morphologically and functionally
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Barresi, Michael J. F., and Scott F. Gilbert. "Ectodermal Placodes and the Epidermis." In Developmental Biology. Oxford University Press, 2023. http://dx.doi.org/10.1093/hesc/9780197574591.003.0022.

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This chapter focuses on ectodermal placodes, which are areas of columnar-shaped cells. It illustrates how cranial placodes in the head contribute to the sense organs forming the olfactory epithelium, the inner ear, and the lens of the eye, and to the cranial sensory ganglia. It also explains how the pre-placodal region separates into individual placodes, a process controlled by local signals from the neural tube and underlying mesoderm or endoderm. The chapter discusses eye development and shows how it starts with the specification of the eye field in the ventral diencephalon. The chapter also
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Atkinson, Martin E. "Embryology of the head and neck." In Anatomy for Dental Students. Oxford University Press, 2013. http://dx.doi.org/10.1093/oso/9780199234462.003.0030.

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Embryology and development have been covered after the main anatomical descriptions in the previous sections, but it is going to precede them in this section. The reason for this departure is that the embryonic development of the head and neck explains much of the mature anatomy which can seem illogical without its developmental history. The development of the head, face, and neck is an area of embryology where significant strides in our understanding have been made in the last few years. The development of the head is intimately related to the development of the brain outlined in Chapter 19 a
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Gorlin, Robert J., M. Michael Cohen, and Raoul C. M. Hennekam. "Syndromes of the Eye." In Syndromes of the Head and Neck. Oxford University PressNew York, NY, 2001. http://dx.doi.org/10.1093/oso/9780195118612.003.0030.

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Abstract Rieger syndrome (hypodontia and primary mesodermal dysgenesis of the iris) Hypodontia in combination with malformation of part of the anterior chamber of the eye was described as early as 1883 by Vossius (43). However, the condition was not recognized as a heritable syndrome until the report of Rieger (34), in 1935. The syndrome has been expanded to include absent maxillary incisor teeth, malformations of the anterior chamber of the eye (Rieger anomaly), and umbilical anomalies (11,22,38). Its frequency has been estimated as 1/200,000 population (2).
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Chipman, Ariel D. "Vertebrate characteristics." In Organismic Animal Biology. Oxford University PressOxford, 2024. http://dx.doi.org/10.1093/oso/9780192893581.003.0029.

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Abstract Vertebrata includes some of the most familiar and best-loved animal species. The generally larger size of vertebrates makes them dominant animals in most environments. Vertebrates are distinguished from other chordates by the presence of bone, which forms the vertebral column and to other skeletal structures. Vertebrates also have a large distinct head with a skull and an enlarged brain. Many of the novel structures of vertebrates are derived from a vertebrate-specific group of embryonic cells, the neural crest. There are two types of bones in vertebrates: endochondral bone, which is
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Konferenzberichte zum Thema "Head mesoderm"

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Varner, Victor D., Dmitry A. Voronov, and Larry A. Taber. "Mechanics of Embryonic Head Fold Morphogenesis." In ASME 2008 Summer Bioengineering Conference. American Society of Mechanical Engineers, 2008. http://dx.doi.org/10.1115/sbc2008-193032.

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Head fold morphogenesis constitutes the first discernible epithelial folding event in the embryonic development of the chick. It arises at Hamburger and Hamilton (HH) stage 6 (approximately 24 hours into a 21-day incubation period) and establishes the anterior extent of the embryo [1]. At this stage, the embryonic blastoderm is composed of three germ layers (endoderm, mesoderm, and ectoderm), which are organized into a flat layered sheet that overlies the fibrous vitelline membrane (VM). Within this blastodermal sheet, a crescent-shaped head fold develops just anterior to the elongating notoch
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