Blockade of Dopamine D2 Receptors as a Novel Approach to Stimulation of Notch1+ Endothelial Progenitor Cells and Angiogenesis in C57BL/6 Mice with Pulmonary Emphysema Induced by Proteases and Deficiency of α1-Antitrypsin.
Bull Exp Biol Med
; 168(6): 718-723, 2020 Apr.
Article
en En
| MEDLINE
| ID: mdl-32328949
ABSTRACT
We studied the effects of spiperone, a selective blocker of dopamine D2 receptors, on the model of pulmonary emphysema provoked by administration of elastase and D-galactosamine hydrochloride to female C57BL/6 mice and characterized by activation of proteases in the lungs and systemic deficiency of its inhibitor α1-antitrypsin. In this model, spiperone prevented the development of inflammatory reaction and reduced the area of emphysematous expanded alveolar tissue. The expression of angiogenic marker CD31 in the lungs increased under these conditions. Regeneration of the damaged microvascular bed under the action of spiperone resulted from recruiting of Notch1+ endothelial progenitor cells (CD45-CD31+CD34+) into the lungs and blockade of the inhibitory effect of dopamine on phosphorylation of VEGF-2 receptors in endothelial cells of different maturity. In addition, spiperone produced a protective effect on hepatocytes and restored the production and secretion of α1-antitrypsin by these cells.
Palabras clave
Texto completo:
1
Base de datos:
MEDLINE
Asunto principal:
Enfisema Pulmonar
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Espiperona
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Receptores de Dopamina D2
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Antagonistas de Dopamina
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Deficiencia de alfa 1-Antitripsina
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Receptor Notch1
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Células Progenitoras Endoteliales
Tipo de estudio:
Prognostic_studies
Idioma:
En
Revista:
Bull Exp Biol Med
Año:
2020
Tipo del documento:
Article