Fibroblast growth factor-2 in hyperplastic pituitaries of D2R knockout female mice

Dopamine D2 receptor (D2R) knockout (KO) female mice develop chronic hyperprolactinemia and pituitary hyperplasia. Our objective was to study the expression of the mitogen fibroblast growth factor (FGF2) and its receptor, FGFR1, comparatively in pituitaries from KO and wild-type (WT) female mice. We...

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Autor principal: Cristina, C.
Otros Autores: Díaz-Torga, G., Góngora, A., Guida, M.C, Perez-Millán, M.I, Baldi, A., Becu-Villalobos, D.
Formato: Capítulo de libro
Lenguaje:Inglés
Publicado: 2007
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Acceso en línea:Registro en Scopus
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024 7 |2 scopus  |a 2-s2.0-36148950965 
024 7 |2 cas  |a prolactin, 12585-34-1, 50647-00-2, 9002-62-4; Extracellular Signal-Regulated MAP Kinases, EC 2.7.1.37; Fgfr1 protein, mouse, EC 2.7.1.112; Fibroblast Growth Factor 2, 103107-01-3; Prolactin, 9002-62-4; Receptor, Fibroblast Growth Factor, Type 1, EC 2.7.1.112; Receptors, Dopamine D2 
040 |a Scopus  |b spa  |c AR-BaUEN  |d AR-BaUEN 
030 |a AJPMD 
100 1 |a Cristina, C. 
245 1 0 |a Fibroblast growth factor-2 in hyperplastic pituitaries of D2R knockout female mice 
260 |c 2007 
270 1 0 |m Becu-Villalobos, D.; Instituto de Biología Y Medicina Experimental, CONICET, V. Obligado 2490, (1428) Buenos Aires, Argentina; email: dbecu@dna.uba.ar 
506 |2 openaire  |e Política editorial 
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504 |a Zhang, X., Horwitz, G.A., Prezant, T.R., Valentini, A., Nakashima, M., Bronstein, M.D., Melmed, S., Structure, expression, and function of human pituitary tumor-transforming gene (PTTG) (1999) Mol Endocrinol, 13, pp. 156-166 
520 3 |a Dopamine D2 receptor (D2R) knockout (KO) female mice develop chronic hyperprolactinemia and pituitary hyperplasia. Our objective was to study the expression of the mitogen fibroblast growth factor (FGF2) and its receptor, FGFR1, comparatively in pituitaries from KO and wild-type (WT) female mice. We also evaluated FGF2 subcellular localization and FGF2 effects on pituitary function. FGF2-induced prolactin release showed a similar response pattern in both genotypes, even though basal and FGF2-stimulated release was higher in KO. FGF2 stimulated pituitary cellular proliferation (MTS assay and [ 3H]thymidine incorporation), with no differences between genotypes. FGF2 concentration (measured by ELISA) in whole pituitaries or cultured cells was lower in KO (P < 0.00001 and 0.00014). Immunofluorescence histochemistry showed less FGF2 in pituitaries from KO females and revealed a distinct FGF2 localization pattern between genotypes, being predominantly nuclear in KO and cytosolic in WT pituitaries. Finally, FGF2 could not be detected in the conditioned media from pituitary cultures of both genotypes. FGFR1 levels (Western blot and immunohistochemistry) were higher in pituitaries of KO. Basal concentration of phosphorylated ERKs was lower in KO cells (P = 0.018). However, when stimulated with FGF2, a significantly higher increment of ERK phosphorylation was evidenced in KO cells (P ≤ 0.02). We conclude that disruption of the D2R caused an overall decrease in pituitary FGF2 levels, with an increased distribution in the nucleus, and increased FGFR1 levels. These results are important in the search for reliable prognostic indicators for patients with pituitary dopamine-resistant prolactinomas, which will make tumor-specific therapy possible. Copyright © 2007 the American Physiological Society.  |l eng 
593 |a Instituto de Biologia Y Medicina Experimental, Consejo Nacional de Investigaciones Científicas Y Técnicas-Argentina, Buenos Aires, Argentina 
593 |a Instituto de Biología Y Medicina Experimental, CONICET, V. Obligado 2490, (1428) Buenos Aires, Argentina 
690 1 0 |a DOPAMINERGIC D2 RECEPTOR 
690 1 0 |a EXTRACELLULAR SIGNAL-REGULATED KINASE PHOSPHORYLATION 
690 1 0 |a FIBROBLAST GROWTH FACTOR RECEPTOR-1 
690 1 0 |a IMMUNOHISTOCHEMISTRY 
690 1 0 |a PROLACTIN 
690 1 0 |a DOPAMINE 2 RECEPTOR 
690 1 0 |a FIBROBLAST GROWTH FACTOR 2 
690 1 0 |a PROLACTIN 
690 1 0 |a ANIMAL CELL 
690 1 0 |a ANIMAL CELL CULTURE 
690 1 0 |a ANIMAL EXPERIMENT 
690 1 0 |a ANIMAL MODEL 
690 1 0 |a ANIMAL TISSUE 
690 1 0 |a ARTICLE 
690 1 0 |a CELL ASSAY 
690 1 0 |a CELL PROLIFERATION 
690 1 0 |a CELLULAR DISTRIBUTION 
690 1 0 |a CHRONIC DISEASE 
690 1 0 |a CONCENTRATION (PARAMETERS) 
690 1 0 |a CONTROLLED STUDY 
690 1 0 |a CYTOSOL 
690 1 0 |a DNA SYNTHESIS 
690 1 0 |a ENZYME LINKED IMMUNOSORBENT ASSAY 
690 1 0 |a ENZYME PHOSPHORYLATION 
690 1 0 |a FEMALE 
690 1 0 |a GENOTYPE 
690 1 0 |a HYPERPITUITARISM 
690 1 0 |a HYPERPROLACTINEMIA 
690 1 0 |a HYPOPHYSIS FUNCTION 
690 1 0 |a IMMUNOFLUORESCENCE 
690 1 0 |a IMMUNOHISTOCHEMISTRY 
690 1 0 |a KNOCKOUT MOUSE 
690 1 0 |a MOUSE 
690 1 0 |a NONHUMAN 
690 1 0 |a PRIORITY JOURNAL 
690 1 0 |a PROGNOSIS 
690 1 0 |a PROLACTIN RELEASE 
690 1 0 |a PROLACTINOMA 
690 1 0 |a PROTEIN LOCALIZATION 
690 1 0 |a PROTEIN SECRETION 
690 1 0 |a RELIABILITY 
690 1 0 |a SPECIES COMPARISON 
690 1 0 |a WESTERN BLOTTING 
690 1 0 |a WILD TYPE 
690 1 0 |a ANIMALS 
690 1 0 |a BLOTTING, WESTERN 
690 1 0 |a CELL GROWTH PROCESSES 
690 1 0 |a ENZYME-LINKED IMMUNOSORBENT ASSAY 
690 1 0 |a EXTRACELLULAR SIGNAL-REGULATED MAP KINASES 
690 1 0 |a FEMALE 
690 1 0 |a FIBROBLAST GROWTH FACTOR 2 
690 1 0 |a IMMUNOHISTOCHEMISTRY 
690 1 0 |a MICE 
690 1 0 |a MICE, INBRED C57BL 
690 1 0 |a MICE, KNOCKOUT 
690 1 0 |a MICROSCOPY, CONFOCAL 
690 1 0 |a MICROSCOPY, FLUORESCENCE 
690 1 0 |a PHOSPHORYLATION 
690 1 0 |a PITUITARY GLAND, ANTERIOR 
690 1 0 |a PROLACTIN 
690 1 0 |a PROLACTINOMA 
690 1 0 |a RECEPTOR, FIBROBLAST GROWTH FACTOR, TYPE 1 
690 1 0 |a RECEPTORS, DOPAMINE D2 
651 4 |a HYPERPLASIA 
700 1 |a Díaz-Torga, G. 
700 1 |a Góngora, A. 
700 1 |a Guida, M.C. 
700 1 |a Perez-Millán, M.I. 
700 1 |a Baldi, A. 
700 1 |a Becu-Villalobos, D. 
773 0 |d 2007  |g v. 293  |h pp. E1341-E1351  |k n. 5  |p Am. J. Physiol. Endocrinol. Metab.  |x 01931849  |t American Journal of Physiology - Endocrinology and Metabolism 
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856 4 0 |u https://doi.org/10.1152/ajpendo.00260.2007  |y DOI 
856 4 0 |u https://hdl.handle.net/20.500.12110/paper_01931849_v293_n5_pE1341_Cristina  |y Handle 
856 4 0 |u https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_01931849_v293_n5_pE1341_Cristina  |y Registro en la Biblioteca Digital 
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