Search results for "VEGF"
showing 10 items of 148 documents
VEGF-B as a target for cancer therapy : characterization of monoclonal antibodies towards VEGF-B and generation of VEGF-B expressing tumour cell lines
2007
Role of nitric oxide in tumor development. Role of HSF1 in development of zebrafish embryos in non heat-shocked conditions
2014
The use of animal models has led to the discovery of important mechanisms of biology development in general, and tumor development in particular, to establish and develop new treatments. The Zebrafish (Danio rerio) is increasingly used nowadays as part of this research because of its many advantages such as the transparency of the larvae, and the high homology with human. Several approaches have been developed in this fish, as the gene-knockdown in order to identify the role of a protein in the development, or the tumor transplantation of mammalian cells to study anti-tumor treatments response.It is in one of these two contexts that we studied the role of nitric oxide in tumor development i…
Vascular endothelial growth factor induces brain erythropoietin expression?
2006
To investigate whether the formation of vascular endothelial growth factor (VEGF) influences erythropoietin (EPO) expression in physiological conditions, we injected into the left lateral cerebral ventricle of the Mongolian gerbil an adeno-associated virus (AAV) vector capable of expressing the 165-amino-acid isoform of VEGF (VEGF165). Twelve and 18 days after AAV vector injection, the experimental animals were sacrificed and expression of EPO was evaluated through immunohistochemical analysis of both the hippocampus and the frontal cortex. We observed that VEGF165 induces EPO expression in the hippocampal pyramidal layers and in the frontal cortex of the gerbil, particularly after the 18th…
Semaphorin 4D cooperates with VEGF to promote angiogenesis and tumor progression
2012
The semaphorins and plexins comprise a family of cysteine-rich proteins implicated in control of nerve growth and development and regulation of the immune response. Our group and others have found that Semaphorin 4D (SEMA4D) and its receptor, Plexin-B1, play an important role in tumor-induced angiogenesis, with some neoplasms producing SEMA4D in a manner analogous to vascular endothelial growth factor (VEGF) in order to attract Plexin-B1-expressing endothelial cells into the tumor for the purpose of promoting growth and vascularity. While anti-VEGF strategies have been the focus of most angiogenesis inhibition research, such treatment can lead to upregulation of pro-angiogenic factors that …
VEGF faktoru atklāšana acs priekšējas kameras šķidrumā - norma un patoloģija
2019
Ievads: Asinsvadu neovaskularizācija ir grūts process, kur galvenais mehānisms ir VEGF izdalīšana, kas nodrošina barības vielu un skābekļa transportēšanu. Tas ir pamats daudziem fizioloģiskiem un patoloģiskiem procesiem. Acs audos VEGF darbības izpēte ir aktuāla tēma, jo patoloģiski paaugstināts VEGF norāda uz hipoksijas apstākļiem audos, un VEGF līmeņa mērīšana var dot informāciju par išēmiju, prognostisko attīstību, kas savukārt sekmē laicīgo terapijas uzsākšanu, lai samazinātu iespējamās blakusparadības. Pētījuma mērķis: Noteikt VEGF līmeni acu priekšējā kamerā kontrolgrupas pacientiem ar kataraktas diagnozi, bez citām acu saslimšanām, un salīdzināt ar literatūras iegūtajiem rezultātiem,…
Boron Ions: Simultaneous Boron Ion‐Channel/Growth Factor Receptor Activation for Enhanced Vascularization (Adv. Biosys. 1/2019)
2019
Análisis de mediadores moleculares implicados en angiogénesis en pacientes con cáncer de pulmón no microcítico: determinación de su valor como biomar…
2012
El cáncer de pulmón constituye un importante problema de salud pública, siendo el cáncer con los índices de mortalidad más elevados. Su diagnóstico se ve dificultado por la ausencia de síntomas en pacientes con tumores en estado precoz, diagnosticándose la mayoría de casos en fases ya avanzadas. Además la importancia del cáncer de pulmón radica en su mal pronóstico, ya que a pesar de los avances en el diagnóstico y en la terapéutica, el índice de supervivencia media tras 5 años es aproximadamente del 15%. La neovascularización tumoral, por medio de los procesos de angiogénesis, vasculogénesis y linfangiogénesis, resulta clave para el crecimiento y diseminación del tumor y se inicia ya en et…
Intravitreal dexamethasone as an enhancer for the anti-VEGF treatment in neovascular ARMD: recovering an old ally
2010
Análisis inmunohistoquímico de mediadores moleculares implicados en angiogénesis LDH5 y VEGFR2/pKDR en pacientes con cáncer colorrectal avanzado: det…
2017
Tema. El esquema de tratamiento de primera línea estándar más utlizado para los pacientes diagnosticados de adenocarcinoma colorectal avanzado es en la actualidad la combinación de Oxaliplatino, Fluoropirimidinas y Bevacizumab. No todos los pacientes se benefician de igual manera, siendo necesarios identificar marcadores moleculares capaces de predecir el pronóstico y la posibilidad de respuesta. Objetivos. El objetivo de nuestro estudio es determinar el papel pronóstico y predictivo de la expresión inmunohistoquímica de dos proteínas implicadas en la angiogénesis y adaptación metabólica a la hipoxia tumoral: LDH5 y VEGFR/pKDR, en pacientes tratados con Oxaliplatino y Fluoropirimidinas con …
A Reassessment of the Therapeutic Potential of a Dopamine Receptor 2 Agonist (D2-AG) in Endometriosis by Comparison against a Standardized Antiangiog…
2021
Dopamine receptor 2 agonists (D2-ags) have been shown to reduce the size of tumors by targeting aberrant angiogenesis in pathological tissue. Because of this, the use of a D2-ag was inferred for endometriosis treatment. When assayed in mouse models however, D2-ags have been shown to cause a shift of the immature vessels towards a more mature phenotype but not a significant reduction in the amount of vascularization and size of lesions. These has raised concerns on whether the antiangiogenic effects of these compounds confer a therapeutic value for endometriosis. In the belief that antiangiogenic effects of D2-ags in endometriosis were masked due to non-optimal timing of pharmacological inte…