Готові списки джерел за темами / Ectodermal germ layers

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Добірка наукової літератури з теми "Ectodermal germ layers"

Автор: Grafiati

Опубліковано: 3 червня 2025

Оновлено: 31 липня 2025

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Статті в журналах з теми "Ectodermal germ layers"

M, Hariharasubramanian, Rajashekar T S, Suresh Kumar K, and Hanumanthayya K. "A Rare Case of Hypohidrotic Ectodermal Dysplasia." Journal of Clinical and Biomedical Sciences 14, no. 4 (2024): 167–69. https://doi.org/10.58739/jcbs/v14i4.69.

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A wide range of hereditary diseases affecting two or more ectodermally derived tissues together are referred to as ectodermal dysplasias (EDs). The most frequently impacted ectodermal derivatives are the teeth, nails, sweat glands, and hair. The mucous membranes of the mouth and nose, lips, eyes, ears, and other ectodermal structures could also be impacted. During embryonic development, the ectoderm forms the outermost layer of the primary germ layers that give rise to the several structures that are commonly affected in ED. As a result, depending on the array and severity of the anomaly, ED p

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Hartenstein, A. Y., A. Rugendorff, U. Tepass, and V. Hartenstein. "The function of the neurogenic genes during epithelial development in the Drosophila embryo." Development 116, no. 4 (1992): 1203–20. http://dx.doi.org/10.1242/dev.116.4.1203.

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The complex embryonic phenotype of the six neurogenic mutations Notch, mastermind, big brain, Delta, Enhancer of split and neuralized was analyzed by using different antibodies and PlacZ markers, which allowed us to label most of the known embryonic tissues. Our results demonstrate that all of the neurogenic mutants show abnormalities in many different organs derived from all three germ layers. Defects caused by the neurogenic mutations in ectodermally derived tissues fell into two categories. First, all cell types that delaminate from the ectoderm (neuroblasts, sensory neurons, peripheral gli

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Kirillova, Anastasia, Grigory Genikhovich, Ekaterina Pukhlyakova, Adrien Demilly, Yulia Kraus, and Ulrich Technau. "Germ-layer commitment and axis formation in sea anemone embryonic cell aggregates." Proceedings of the National Academy of Sciences 115, no. 8 (2018): 1813–18. http://dx.doi.org/10.1073/pnas.1711516115.

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Robust morphogenetic events are pivotal for animal embryogenesis. However, comparison of the modes of development of different members of a phylum suggests that the spectrum of developmental trajectories accessible for a species might be far broader than can be concluded from the observation of normal development. Here, by using a combination of microsurgery and transgenic reporter gene expression, we show that, facing a new developmental context, the aggregates of dissociated embryonic cells of the sea anemone Nematostella vectensis take an alternative developmental trajectory. The self-organ

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Indra Buana and Sulfia Magfirah. "Teratoma Mediastinum." Jurnal Ilmu Kedokteran dan Kesehatan Indonesia 3, no. 3 (2023): 171–77. http://dx.doi.org/10.55606/jikki.v3i3.2168.

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Teratomas are germ cell tumors consisting of somatic tissue derived from two or three germinal layers (ectodermal, endodermal, and mesodermal). Teratomas can be classified as mature teratomas and immature teratomas. Teratomas usually arise in the gonads but can also be extra-gonadal. Extragonadal teratomas can occur in the anterior mediastinum, retroperitoneum, pineal, and anterior suprasellar. The general incidence of teratomas is sacrococcygeal 40%, ovarian 25%, testicular 12%, brain 5%, and others including neck and mediastinum 1%. The etiology of teratoma is unknown, but there is a theory

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Das, Prasun, Sudipta Basu, and Srijak Bhattacharyya. "Atypical Presentation of Complicated Dermoid Cyst of Ovary Mimicking Diverticular Abscess." International Journal of Research and Review 8, no. 6 (2021): 30–34. http://dx.doi.org/10.52403/ijrr.20210605.

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Background: Cystic teratomas comprises 20% overall among all ovarian neoplasia. They are made of derivatives of at least two of three germ layers. Histologically different dermoid cyst contains only well differentiated embryological elements of ectodermal layer. Diverticulitis of colon mainly affects elderly population having abscess formation causing lower abdominal pain. Case presentation: We report a case of 50 yr old woman presenting with lower abdominal pain. From barium enema, ultrasound and CT we suggested the probability of diverticular abscess. Patient was undergone left salpingo-ooph

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Adamu, Zainab Ali, Garba Dahiru Waziri, Kamarudeen Owolabi Sani, Yusuf Kalli Gazali, and Abdullahi Mohammed. "Mature midline teratoma arising within a posterior thoracic myelomeningocele in an infant: A case report." IP Archives of Cytology and Histopathology Research 9, no. 4 (2024): 203–5. https://doi.org/10.18231/j.achr.2024.047.

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Myelomeningocele can occur throughout the spinal axis but the area with the least common localization is the thoracic region which is uncommon. Rarely, these abnormalities coexist with a teratoma and only few reports of a teratoma arising from a myelomeningocele have been reported. Teratoma can also undergo malignant transformation to a non-germ cell malignancy. Here, we report an interesting case of a teratoma arising within thoracic myelomeningocele in an infant. A three month old girl born via vaginal delivery to two related Fulani parents presenting with upper back swelling noticed since b

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Henry, G. L., I. H. Brivanlou, D. S. Kessler, A. Hemmati-Brivanlou, and D. A. Melton. "TGF-beta signals and a pattern in Xenopus laevis endodermal development." Development 122, no. 3 (1996): 1007–15. http://dx.doi.org/10.1242/dev.122.3.1007.

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We have analyzed two gene products expressed in the early endoderm of Xenopus laevis: Xlhbox-8, a pancreas-specific transcription factor and intestinal fatty acid binding protein (IFABP), a marker of small intestinal epithelium. Expression of the pancreas marker relies on cell signaling mediated by both the TGF-beta and FGF classes of secreted peptide growth factors, whereas, expression of the more posterior small intestinal marker does not. Endodermal explants devoid of mesoderm express both markers in a regionalized manner. Cortical rotation is required for the expression of the more anterio

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Khatri, Amit, Namita Kalra, Rishi Tyagi, Khadeeja Kulood M, Mayank Sharma, and Drishti Kaushal. "Plausible predicament in emergency endodontic rehabilitation of a child with Sturge-Weber syndrome: A case report." Contemporary Pediatric Dentistry 3, no. 2 (2022): 86–91. http://dx.doi.org/10.51463/cpd.2022.97.

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Sturge–Weber Syndrome (SWS) is a neuro-oculo-cutaneous vascular disorder that includes leptomeningeal hemangioma and port wine stains, usually ipsilaterally, with ocular manifestations and extended lesions over the oral cavity. It is an embryonic developmental disorder affecting both mesodermal and ectodermal germ layers, associated with somatic mutation of gene GNAQ. It has a sporadic occurrence of 1:50,000 and no gender predilection. This case report added to the knowledge and understanding of systematic rehabilitation of a child patient with SWS and its associated risk factors in an emergen

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Miller, J., S. E. Fraser, and D. McClay. "Dynamics of thin filopodia during sea urchin gastrulation." Development 121, no. 8 (1995): 2501–11. http://dx.doi.org/10.1242/dev.121.8.2501.

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At gastrulation in the sea urchin embryo, a dramatic rearrangement of cells establishes the three germ layers of the organism. Experiments have revealed a number of cell interactions at this stage that transfer patterning information from cell to cell. Of particular significance, primary mesenchyme cells, which are responsible for production of the embryonic skeleton, have been shown to obtain extensive positional information from the embryonic ectoderm. In the present study, high resolution Nomarski imaging reveals the presence of very thin filopodia (02-0.4 micron in diameter) extending from

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von Huth, Sebastian, Jesper B. Moeller, Anders Schlosser, et al. "Immunohistochemical Localization of Fibrinogen C Domain Containing 1 on Epithelial and Mucosal Surfaces in Human Tissues." Journal of Histochemistry & Cytochemistry 66, no. 2 (2017): 85–97. http://dx.doi.org/10.1369/0022155417743694.

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Fibrinogen C domain containing 1 (FIBCD1) is a transmembrane receptor that binds chitin and other acetylated compounds with high affinity. FIBCD1 has previously been shown to be present in the epithelium of the gastrointestinal tract. In the present study, we performed a detailed analysis of normally structured human tissues for the expression of FIBCD1 by quantitative PCR and immunohistochemistry. We find that FIBCD1 is expressed in epithelial cells derived from all three germ layers. Endodermal-derived epithelial cells throughout the gastrointestinal tract and the respiratory system showed h

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Більше джерел

Частини книг з теми "Ectodermal germ layers"

Chipman, Ariel D. "Germ layers." In Organismic Animal Biology. Oxford University PressOxford, 2024. http://dx.doi.org/10.1093/oso/9780192893581.003.0007.

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Abstract The idea that the embryo and the adult animal can be divided into a small number of distinct cell populations or germ layers is known as the germ layer theory. The first of the germ layers is the ectoderm, which gives rise to the outer surfaces of the animal. The second is the endoderm, which gives rise to the inner surfaces. These two germ layers mostly generate epithelial tissues. The third germ layer is the mesoderm, which gives rise to connective tissues and support structures. The outer surface of the animal is known as the integument. It forms the boundary between the organism a

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Krantz, Ian D., and Arthur S. Aylsworth. "Liver, Gallbladder, and Pancreas." In Human Malformations and Related Anomalies Second Edition. Oxford University PressNew York, NY, 2005. http://dx.doi.org/10.1093/oso/9780195165685.003.0027.

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Abstract Atimetable of events involving the development of the liver, gallbladder, and pancreas is given in Table 27-1. By the beginning of the 4th week postfertilization in the human, the three germ layers (ectoderm, mesoderm, and endoderm) have been es- tablished. The endodermal layer is continuous with the yolk sac cavity and will form the lining of the developing gut (Fig. 27-1a). The portion of the gut that lies dorsal to the heart is the foregut (Fig. 27-1c), and its endodermal lining provides the primordia of the liver, gallbladder, and pancreas.

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Barresi, Michael J. F., and Scott F. Gilbert. "The Making of a Body and a Field." In Developmental Biology. Oxford University Press, 2023. http://dx.doi.org/10.1093/hesc/9780197574591.003.0002.

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This chapter considers the life cycle as a central unit in biology. It explains the basic animal life cycle, which consists of fertilization, cleavage, gastrulation, germ layer formation, organogenesis, metamorphosis, adulthood, and senescence. It also outlines three germ layers that give rise to specific organ systems: the ectoderm that gives rise to the epidermis, nervous system, and pigment cells; the mesoderm that generates the kidneys, gonads, muscles, bones, heart, and blood cells; and the endoderm that forms the lining of the digestive tube and the respiratory system. The chapter descri

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"The Three Germ Layers: Ectoderm, Endoderm, Mesoderm." In Ear Acupuncture, edited by Beate Strittmatter. Georg Thieme Verlag, 2011. http://dx.doi.org/10.1055/b-0034-75038.

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Bier, Ethan, and William Mcginnis. "Model Organisms in the Study of Development and Disease." In Inborn Errors Of Development. Oxford University PressNew York, NY, 2008. http://dx.doi.org/10.1093/oso/9780195306910.003.0003.

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Abstract The past two decades have brought major breakthroughs in our understanding of the molecular and genetic circuits that control a myriad of developmental events in vertebrates and invertebrates. These detailed studies have revealed surprisingly deep similarities in the mechanisms underlying developmental processes across a wide range of bilaterally symmetric metazoans (bilateralia). Such phylogenetic comparisons have de7ned a common core of genetic pathways guiding development and have made it possible to reconstruct many features of the most recent common ancestor of all bilateral anim

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Chipman, Ariel D. "Diploblastic organisms." In Organismic Animal Biology. Oxford University PressOxford, 2024. http://dx.doi.org/10.1093/oso/9780192893581.003.0009.

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Abstract Diploblastic organisms have only two germ layers: endoderm and ectoderm. The largest phylum of diploblastic animals is Cnidaria—jellyfish, corals, sea anemones, hydroids, and others. Cnidarians are radially symmetrical with a digestive system that has only one opening. The mouth is usually surrounded by tentacles that carry cnidocytes or stinging cells. Many cnidarians are colonial, and the colonies are sometimes embedded in a mineral skeleton. Some cnidarians can appear in two form, polyps or medusae. When there is a medusa stage, it is usually responsible for sexual reproduction. Ma

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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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Тези доповідей конференцій з теми "Ectodermal germ layers"

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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Henkels, Julia A., and Evan A. Zamir. "A Novel Biomimetic Model for Studying Mechanics of Embryonic Morphogenesis and Differentiation." In ASME 2010 Summer Bioengineering Conference. American Society of Mechanical Engineers, 2010. http://dx.doi.org/10.1115/sbc2010-19608.

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Before the explosion of genetics research in the last century, embryonic development was largely studied from a mechanical perspective. Paired with genetic advances in understanding developmental signaling pathways and induction mechanisms, an important goal for understanding morphogenesis is to discover how the genome codes for changes in the mechanical movements of the embryonic cells. After formation of the zygote, a phase of rapid mitotic cell division is followed by epithelialization resulting in a cohesive sheet of cells termed the epiblast. During the next major phase of triploblastic d

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Ramasubramanian, Ashok. "A Computational Model for Gut Looping." In ASME 2010 Summer Bioengineering Conference. American Society of Mechanical Engineers, 2010. http://dx.doi.org/10.1115/sbc2010-19099.

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In chick embryos, a series of complex invaginations involving the three germ layers (endoderm, ectoderm, and mesoderm) lead to the formation of the primitive gut tube. This process normally occurs during the third day of development, at the end of which the gut appears as an open cylindrical tube (Fig.1A). By the end of the fourth day, the tube is closed except in the middle section, which is connected to the yolk sac (Fig. 1B). The gut at this stage is typically divided into three sections: the foregut, midgut, and hindgut. Now starts the process of gut looping that transforms the initially s

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