Consulta: subjectFacets:"Peripheral nervous system"
Registros recuperados: 6
Data/hora: 10/06/2024 11:06:01

Msxb is a core component of the genetic circuitry specifying the dorsal and ventral neurogenic midlines in the ascidian embryo
Provedor de dados: 5
Autores: Roure, Agnes; Darras, Sebastien.
The tail ascidian larval peripheral nervous system is made up of epidermal sensory neurons distributed more or less regularly in ventral and dorsal midlines. Their formation occurs in two-steps: the ventral and dorsal midlines are induced as neurogenic territories by Fgf9/-16/20 and Admp respectively. The Delta2/Notch interaction,then controls the number of neurons that form. The genetic machinery acting between the inductive processes taking place before gastrulation and neuron specification at tailbud stages are largely unknown. The analysis of seven transcription factors expressed in the forming midlines revealed an unexpected complexity and dynamic of gene expression. Their systematic overexpression confirmed that these genes do not interact following...
Tipo: Text
Palavras-chave: Ascidian; Gene regulatory network; Transcription factors; Peripheral nervous system; Neurogenic.
Ano: 2016
URL: https://archimer.ifremer.fr/doc/00374/48557/48984.pdf

Multiple uses of fibrin sealant for nervous system treatment following injury and disease
Provedor de dados: 80
Autores: Biscola,Natalia Perussi; Cartarozzi,Luciana Politti; Ulian-Benitez,Suzana; Barbizan,Roberta; Castro,Mateus Vidigal; Spejo,Aline Barroso; Ferreira Jr.,Rui Seabra; Barraviera,Benedito; Oliveira,Alexandre Leite Rodrigues.
Abstract Lesions to the nervous system often produce hemorrhage and tissue loss that are difficult, if not impossible, to repair. Therefore, scar formation, inflammation and cavitation take place, expanding the lesion epicenter. This significantly worsens the patient conditions and impairment, increasing neuronal loss and glial reaction, which in turn further decreases the chances of a positive outcome. The possibility of using hemostatic substances that also function as a scaffold, such as the fibrin sealant, reduces surgical time and improve postoperative recovery. To date, several studies have demonstrated that human blood derived fibrin sealant produces positive effects in different interventions, becoming an efficient alternative to suturing. To...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Central nervous system; Peripheral nervous system; Commercial fibrin sealant; New heterologous fibrin sealant; Nervous system injury; Fibrin tissue adhesive.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1678-91992017000100202

The neural crest stem cells: control of neural crest cell fate and plasticity by endothelin-3
Provedor de dados: 42
Autores: DUPIN,ELISABETH; REAL,CARLA; LeDOUARIN,NICOLE.
How the considerable diversity of neural crest (NC)-derived cell types arises in the vertebrate embryo has long been a key question in developmental biology. The pluripotency and plasticity of differentiation of the NC cell population has been fully documented and it is well-established that environmental cues play an important role in patterning the NC derivatives throughout the body. Over the past decade, in vivo and in vitro cellular approaches have unravelled the differentiation potentialities of single NC cells and led to the discovery of NC stem cells. Although it is clear that the final fate of individual cells is in agreement with their final position within the embryo, it has to be stressed that the NC cells that reach target sites are pluripotent...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Neural crest; Avian embryo; Cell differentiation; Endothelin3; Peripheral nervous system; Melanocytes; Schwann cells; Mesectoderm.
Ano: 2001
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652001000400007

Anatomical aspects of the nerves of the leg and foot of the giant anteater (Myrmecophaga tridactyla, Linnaeus, 1758)
Provedor de dados: 45
Autores: Cruz,V.S.; Cardoso,J.C.; Araújo,L.B.M.; Souza,P.R.; Silva,M.S.B.; Araújo,E.G.
Although distal stifle joint nerve distribution has been well established in domestic animals, this approach is scarcely reported in wild animals. Therefore, the aim of this study was to describe the nerves of the leg and foot of Myrmecophaga tridactyla with emphasis on their ramification, distribution, topography and territory of innervation. For this purpose, six adult cadavers fixed and preserved in 10% formalin solution were used. The nerves of the leg and foot of the M. tridactylawere the saphenous nerve (femoral nerve branch), fibular and tibial nerves and lateral sural cutaneous nerve (branches of the sciatic nerve) and caudal sural cutaneous nerve (tibial nerve branch). The saphenous nerve branches to the skin, the craniomedial surface of the leg,...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Pelvic limb; Peripheral nervous system; Xenarthra.
Ano: 2014
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352014000501419

Diversity among satellite glial cells in dorsal root ganglia of the rat
Provedor de dados: 56
Autores: Nascimento,R.S.; Santiago,M.F.; Marques,S.A.; Allodi,S.; Martinez,A.M.B.
Peripheral glial cells consist of satellite, enteric glial, and Schwann cells. In dorsal root ganglia, besides pseudo-unipolar neurons, myelinated and nonmyelinated fibers, macrophages, and fibroblasts, satellite cells also constitute the resident components. Information on satellite cells is not abundant; however, they appear to provide mechanical and metabolic support for neurons by forming an envelope surrounding their cell bodies. Although there is a heterogeneous population of neurons in the dorsal root ganglia, satellite cells have been described to be a homogeneous group of perineuronal cells. Our objective was to characterize the ultrastructure, immunohistochemistry, and histochemistry of the satellite cells of the dorsal root ganglia of 17 adult...
Tipo: Info:eu-repo/semantics/other
Palavras-chave: Satellite glial cells; Peripheral nervous system; Vimentin; S-100; Electron microscopy.
Ano: 2008
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2008001100011

Modifications of the sympathetic skin response in workers chronically exposed to lead
Provedor de dados: 56
Autores: Nora,D.B.; Gomes,I.; Said,G.; Carvalho,F.M.; Melo,A.
The long-term effects of low-level lead intoxication are not known. The sympathetic skin response (SSR) was evaluated in a group of 60 former workers of a primary lead smelter, located in Santo Amaro, BA, Brazil. The individuals participating in the study were submitted to a clinical-epidemiological evaluation including questions related to potential risk factors for intoxication, complaints related to peripheral nervous system (PNS) involvement, neurological clinical examination, and also to electromyography and nerve conduction studies and SSR evaluation. The sample consisted of 57 men and 3 women aged 34 to 69 years (mean ± SD: 46.8 ± 6.9). The neurophysiologic evaluation showed the presence of lumbosacral radiculopathy in one of the individuals (1.7%),...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Neuropathy; Sympathetic skin response; Lead intoxication; Peripheral nervous system.
Ano: 2007
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2007000100011