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https://www.readbyqxmd.com/read/28717698/neuroblastoma-in-africa-a-survey-by-the-franco-african-pediatric-oncology-group
#1
Fousseyni Traoré, Francis Eshun, Boubacar Togo, Jean Jacques Atteby Yao, Mbuli Robert Lukamba
PURPOSE: Neuroblastoma is a sympathoadrenal lineage neural crest-derived tumor. It is the third most common childhood malignancy in the Western world. Studies from the United States show that black patients with neuroblastoma have a greater proportion of high-risk neuroblastoma with poorer prognosis compared with white patients. In Africa, there are few published data on the epidemiology and management of neuroblastoma. The primary aim of this study was to assess the diagnostic and therapeutic resources available for the management of neuroblastoma within the Franco-African Pediatric Oncology Group (GFAOP)...
August 2016: Journal of Global Oncology
https://www.readbyqxmd.com/read/28717527/vagal-paraganglioma-presenting-as-a-neck-mass-associated-with-cough-on-palpation
#2
Richard Heyes, Nizar Taki, Miriam A O'Leary
A 70-year-old female presented with a neck mass and sporadic dry cough, often leading to fits of coughing severe enough to cause vomiting. The patient reported that touching the mass triggered the cough. On examination, a 2.5 cm right-sided level two neck mass deep to the sternocleidomastoid was present. Palpation of the mass immediately triggered coughing. Cross-sectional imaging proposed vagal paraganglioma as the chief differential, which was confirmed following surgical excision. The patient reported complete resolution of her severe dry cough after surgery...
2017: Case Reports in Otolaryngology
https://www.readbyqxmd.com/read/28716733/ml327-induces-apoptosis-and-sensitizes-ewing-sarcoma-cells-to-tnf-related-apoptosis-inducing-ligand
#3
Eric J Rellinger, Chandrasekhar Padmanabhan, Jingbo Qiao, Andrew Appert, Alex G Waterson, Craig W Lindsley, R Daniel Beauchamp, Dai H Chung
Ewing sarcomas are rare mesenchymal-derived bone and soft tissue tumors in children. Afflicted children with distant metastases have poor survival despite aggressive therapeutics. Epithelial-to-mesenchymal transition in epithelial carcinomas is associated with loss of E-cadherin and resistance to apoptosis. ML327 is a novel small molecule that we have previously shown to reverse epithelial-to-mesenchymal transition features in both epithelial and neural crest-derived cancers. Herein, we sought to evaluate the effects of ML327 on mesenchymal-derived Ewing sarcoma cells, hypothesizing that ML327 initiates growth arrest and sensitizes to TNF-related apoptosis-inducing ligand...
July 14, 2017: Biochemical and Biophysical Research Communications
https://www.readbyqxmd.com/read/28714851/pdgfr%C3%AE-functions-in-endothelial-derived-cells-to-regulate-neural-crest-cells-and-development-of-the-great-arteries
#4
Haig Aghajanian, Young Kuk Cho, Nicholas W Rizer, Qiaohong Wang, Li Li, Karl Degenhardt, Rajan Jain
Originating as a single vessel emerging from the embryonic heart, the truncus arteriosus must septate and remodel into the aorta and pulmonary artery to support postnatal life. Defective remodeling or septation leads to abnormalities collectively known as conotruncal defects, which are associated with significant mortality and morbidity. Multiple populations of cells must interact to coordinate outflow tract remodeling, and cardiac neural crest has emerged as particularly important during this process. Abnormalities in cardiac neural crest have been implicated in the pathogenesis of multiple conotruncal defects, including persistent truncus arteriosus, double outlet right ventricle, and tetralogy of Fallot...
July 14, 2017: Disease Models & Mechanisms
https://www.readbyqxmd.com/read/28713614/condition-medium-of-cerebrospinal-fluid-and-retinoic-acid-induces-the-transdifferentiation-of-human-dental-pulp-stem-cells-into-neuroglia-and-neural-like-cells
#5
Sara Haratizadeh, Maryam Nazm Bojnordi, Shahram Darabi, Narges Karimi, Mehrdad Naghikhani, Hatef Ghasemi Hamidabadi, Morteza Seifi
Cerebrospinal fluid (CSF) contains several molecules which are essential for neurogenesis. Human dental pulp stem cells (hDPSCs) are putatively neural crest cell-derived that can differentiate into neurons and glial cells under appropriate neurotrophic factors. The aim of this study was to induce differentiation of hDPSCs into neuroglial phenotypes using retinoic acid (RA) and CSF. The hDPSCs from an impacted third molar were isolated by mechanical and digestion and cultured. The cells have treated by 10(-7) µM RA (RA group) for 8 days, 10% CSF (CSF group) for 8 days and RA with CSF for 8 days (RA/CSF group)...
June 2017: Anatomy & Cell Biology
https://www.readbyqxmd.com/read/28710811/insights-from-zebrafish-on-human-pigment-cell-disease-and-treatment
#6
REVIEW
Cynthia D Cooper
Black pigment cells, melanocytes, arise early during development from multipotent neural crest cells. Melanocytes protect human skin from DNA damaging sunrays and provide color for hair, eyes and skin. Several disorders and diseases originate from these cells, including the deadliest skin cell cancer, melanoma. Thus, melanocytes are critical for a healthy life and for protecting humans from disease. Due to the ease of visualizing pigment cells through transparent larvae skin and conserved roles for zebrafish melanophore genes to mammalian melanocyte genes, zebrafish larvae offer a biologically relevant model for understanding pigment cell development and disease in humans...
July 14, 2017: Developmental Dynamics: An Official Publication of the American Association of Anatomists
https://www.readbyqxmd.com/read/28705894/genome-wide-analysis-of-facial-skeletal-regionalization-in-zebrafish
#7
Amjad Askary, Pengfei Xu, Lindsey Barske, Maxwell Bay, Paul Bump, Bartosz Balczerski, Michael A Bonaguidi, J Gage Crump
Patterning of the facial skeleton involves the precise deployment of thousands of genes in distinct regions of the pharyngeal arches. Despite the significance for craniofacial development, how genetic programs drive this regionalization remains incompletely understood. Here we use combinatorial labeling of zebrafish cranial neural crest-derived cells (CNCCs) to define global gene expression along the dorsoventral axis of the developing arches. Intersection of region-specific transcriptomes with expression changes in response to signaling perturbations demonstrates complex roles for Endothelin1 (Edn1) signaling in the intermediate joint-forming region, yet a surprisingly minor role in ventral-most regions...
July 13, 2017: Development
https://www.readbyqxmd.com/read/28704293/analysis-of-neural-crest-cells-from-charcot-marie-tooth-disease-patients-demonstrates-disease-relevant-molecular-signature
#8
Fukiko Kitani-Morii, Keiko Imamura, Takayuki Kondo, Ryo Ohara, Takako Enami, Ran Shibukawa, Takuya Yamamoto, Kazuya Sekiguchi, Junya Toguchida, Toshiki Mizuno, Masanori Nakagawa, Haruhisa Inoue
Charcot-Marie-Tooth disease (CMT) is the most common inherited neuropathy. The majority of CMT is demyelinating type (demyelinating CMT) caused by Schwann cell involvement. Although a large number of genes responsible for demyelinating CMT have been found, the common molecular target of the pathophysiology caused by these different genes in demyelinating CMT is still unknown. We generated induced pluripotent stem cells (iPSCs) from healthy controls and patients with demyelinating CMT caused by duplication in peripheral myelin protein 22 kDa (PMP22) or point mutations in myelin protein zero (MPZ) or early growth response 2 (EGR2)...
July 12, 2017: Neuroreport
https://www.readbyqxmd.com/read/28700440/de-novo-tumors-of-teratoma-ganglioneuroma-arising-from-a-mature-cystic-teratoma-of-the-ovary
#9
Shannon Coy, Emily Meserve, Ross Berkowitz, Michelle S Hirsch
Mature teratomas are the most common ovarian neoplasms, accounting for 40% to 50% of ovarian tumors, and are histologically defined by the presence of multiple lineages of mature differentiated cells derived from one or more of the 3 embryonic germ layers; ectoderm, mesoderm, and endoderm. Neuroectodermal and neural crest differentiation can be observed in mature teratomas, but it is uncommon to find secondary tumors that arise from the neural crest lineage. Herein we report the uncommon finding of a ganglioneuroma arising in a mature cystic teratoma in a 26-yr-old woman...
July 11, 2017: International Journal of Gynecological Pathology
https://www.readbyqxmd.com/read/28695961/apolipoprotein-c-i-mediates-wnt-ctnnb1-signaling-during-neural-border-formation-and-is-required-for-neural-crest-development
#10
Chika Yokota, Carolina Åstrand, Shuji Takahashi, Daniel W Hagey, Jan M Stenman
In vertebrates, the neural crest and placodes originate in the neural border, which is located between the neural plate and epidermal ectoderm. The neural crest and placodes give rise to a vast array of cell types. Formation of neural crest is a multi-step process, in which Wnt signals are used reiteratively, but it is currently not clear if a Wnt signal is required for neural border formation. Here, we have identified apolipoprotein C-I (apoc1) in a screen for genes regulated by Wnt/Ctnnb1 signaling in late blastula stage Xenopus tropicalis embryos...
2017: International Journal of Developmental Biology
https://www.readbyqxmd.com/read/28695960/galectin-1-enhances-the-generation-of-neural-crest-cells
#11
Tsutomu Motohashi, Masahiro Nishioka, Daisuke Kitagawa, Norito Kawamura, Natsuki Watanabe, Takanori Wakaoka, Toshihiko Kadoya, Takahiro Kunisada
Neural crest (NC) cells are multipotent cells that emerge from the dorsal region of the neural tube. After delaminating from the neural tube, NC cells migrate throughout the developing embryo and differentiate into various cells: neurons and glial cells of the peripheral nervous system, melanocytes of skin, and skeletal elements of the face and head. We previously analyzed the gene expression profile of a NC subpopulation isolated from Sox10-IRES-Venus mice and found that the carbohydrate-binding protein, Galectin-1 (Gal-1) was strongly expressed in generating NC cells...
2017: International Journal of Developmental Biology
https://www.readbyqxmd.com/read/28692664/a-functional-approach-to-understanding-the-role-of-nckx5-in-xenopus-pigmentation
#12
Ruth M Williams, Robert J Winkfein, Rebecca S Ginger, Martin R Green, Paul P Schnetkamp, Grant N Wheeler
NCKX5 is an ion exchanger expressed mostly in pigment cells; however, the functional role for this protein in melanogenesis is not clear. A variant allele of SLC24A5, the gene encoding NCKX5, has been shown to correlate with lighter skin pigmentation in humans, indicating a key role for SLC24A5 in determining human skin colour. SLC24A5 expression has been found to be elevated in melanoma. Knockdown analyses have shown SLC24A5 to be important for pigmentation, but to date the function of this ion exchanger in melanogenesis has not been fully established...
2017: PloS One
https://www.readbyqxmd.com/read/28689736/zebrafish-zic2-controls-formation-of-periocular-neural-crest-and-choroid-fissure-morphogenesis
#13
Irina Sedykh, Baul Yoon, Laura Roberson, Oleg Moskvin, Colin N Dewey, Yevgenya Grinblat
The vertebrate retina develops in close proximity to the forebrain and neural crest-derived cartilages of the face and jaw. Coloboma, a congenital eye malformation, is associated with aberrant forebrain development (holoprosencephaly) and with craniofacial defects (frontonasal dysplasia) in humans, suggesting a critical role for cross-lineage interactions during retinal morphogenesis. ZIC2, a zinc-finger transcription factor, is linked to human holoprosencephaly. We have previously used morpholino assays to show zebrafish zic2 functions in the developing forebrain, retina and craniofacial cartilage...
July 6, 2017: Developmental Biology
https://www.readbyqxmd.com/read/28687932/spatial-and-temporal-expression-of-sox9-during-murine-incisor-development
#14
Zhi-Cheng Yang, Dan Li, Shuang Feng, Xiao-Dong Sui, Zhi Chen, Li Zhang
Mouse incisors are capable of continuously growing due to the renewal of dental epithelium stem cells and mesenchymal stem cells residing at the proximal ends. The transcription factor Sox9 plays important roles in maintaining the stem cells of hair follicles, retinal progenitor cells and neural crest stem cells. Whether Sox9 is involved during mouse incisor development is not reported yet. In this study, we examined the expression pattern of Sox9 during mouse incisor development by in situ hybridization and immunohistochemistry...
August 2017: Journal of Molecular Histology
https://www.readbyqxmd.com/read/28686747/functional-analysis-of-the-zebrafish-ortholog-of-hmgcs1-reveals-independent-functions-for-cholesterol-and-isoprenoids-in-craniofacial-development
#15
Anita M Quintana, Jose A Hernandez, Cesar G Gonzalez
There are 8 different human syndromes caused by mutations in the cholesterol synthesis pathway. A subset of these disorders such as Smith-Lemli-Opitz disorder, are associated with facial dysmorphia. However, the molecular and cellular mechanisms underlying such facial deficits are not fully understood, primarily because of the diverse functions associated with the cholesterol synthesis pathway. Recent evidence has demonstrated that mutation of the zebrafish ortholog of HMGCR results in orofacial clefts. Here we sought to expand upon these data, by deciphering the cholesterol dependent functions of the cholesterol synthesis pathway from the cholesterol independent functions...
2017: PloS One
https://www.readbyqxmd.com/read/28684471/multipotent-peripheral-glial-cells-generate-neuroendocrine-cells-of-the-adrenal-medulla
#16
Alessandro Furlan, Vyacheslav Dyachuk, Maria Eleni Kastriti, Laura Calvo-Enrique, Hind Abdo, Saida Hadjab, Tatiana Chontorotzea, Natalia Akkuratova, Dmitry Usoskin, Dmitry Kamenev, Julian Petersen, Kazunori Sunadome, Fatima Memic, Ulrika Marklund, Kaj Fried, Piotr Topilko, Francois Lallemend, Peter V Kharchenko, Patrik Ernfors, Igor Adameyko
Adrenaline is a fundamental circulating hormone for bodily responses to internal and external stressors. Chromaffin cells of the adrenal medulla (AM) represent the main neuroendocrine adrenergic component and are believed to differentiate from neural crest cells. We demonstrate that large numbers of chromaffin cells arise from peripheral glial stem cells, termed Schwann cell precursors (SCPs). SCPs migrate along the visceral motor nerve to the vicinity of the forming adrenal gland, where they detach from the nerve and form postsynaptic neuroendocrine chromaffin cells...
July 7, 2017: Science
https://www.readbyqxmd.com/read/28683107/human-bone-marrow-harbors-cells-with-neural-crest-associated-characteristics-like-human-adipose-and-dermis-tissues
#17
Cécile Coste, Virginie Neirinckx, Anil Sharma, Gulistan Agirman, Bernard Rogister, Jacques Foguenne, François Lallemend, André Gothot, Sabine Wislet
Adult neural crest stem-derived cells (NCSC) are of extraordinary high plasticity and promising candidates for use in regenerative medicine. Several locations such as skin, adipose tissue, dental pulp or bone marrow have been described in rodent, as sources of NCSC. However, very little information is available concerning their correspondence in human tissues, and more precisely for human bone marrow. The main objective of this study was therefore to characterize NCSC from adult human bone marrow. In this purpose, we compared human bone marrow stromal cells to human adipose tissue and dermis, already described for containing NCSC...
2017: PloS One
https://www.readbyqxmd.com/read/28681995/differences-in-neural-crest-sensitivity-to-ethanol-account-for-the-infrequency-of-anterior-segment-defects-in-the-eye-compared-with-craniofacial-anomalies-in-a-zebrafish-model-of-fetal-alcohol-syndrome
#18
Jessica Eason, Antionette L Williams, Bahaar Chawla, Christian Apsey, Brenda L Bohnsack
BACKGROUND: Ethanol (ETOH) exposure during pregnancy is associated with craniofacial and neurologic abnormalities, but infrequently disrupts the anterior segment of the eye. In these studies, we used zebrafish to investigate differences in the teratogenic effect of ETOH on craniofacial, periocular, and ocular neural crest. METHODS: Zebrafish eye and neural crest development was analyzed by means of live imaging, TUNEL (terminal deoxynucleotidyl transferase dUTP nick end labeling) assay, immunostaining, detection of reactive oxygen species, and in situ hybridization...
July 6, 2017: Birth defects research
https://www.readbyqxmd.com/read/28670071/pleural-based-granular-cell-tumor
#19
Chibuzo Odigwe, Robert Bradley, Rohan Ranjit Arya
Granular cell tumors are rare tumors of Schwann cell origin that arise from tissues of neural crest and mesenchymal origin. We report the clinical, radiographic, and pathological features of a pleural-based granular cell tumor in a 60-year-old African American man.
July 2017: Proceedings of the Baylor University Medical Center
https://www.readbyqxmd.com/read/28663868/embryonic-aortic-arch-hemodynamics-are-a-functional-biomarker-for-ethanol-induced-congenital-heart-defects-invited
#20
Lindsy M Peterson, Shi Gu, Ganga Karunamuni, Michael W Jenkins, Michiko Watanabe, Andrew M Rollins
The great arteries develop from symmetrical aortic arch arteries which are extensively remodeled. These events are vulnerable to perturbations. Hemodynamic forces have a significant role in this remodeling. In this study, optical coherence tomography (OCT) visualized live avian embryos for staging and measuring pharyngeal arch morphology. Measurements acquired with our orientation-independent, dual-angle Doppler OCT technique revealed that ethanol exposure leads to higher absolute blood flow, shear stress, and retrograde flow...
March 1, 2017: Biomedical Optics Express
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