The action of oxytocin on the bone of senescent female rats

Autor: Luís Fernando Gadioli Santos, Fernanda Fernandes-Breitenbach, Rafael Augusto Santos Silva, Damáris Raíssa Santos, Melise Jacon Peres-Ueno, Edilson Ervolino, Antonio Hernandes Chaves-Neto, Rita Cássia Menegati Dornelles
Přispěvatelé: Universidade Estadual Paulista (UNESP)
Rok vydání: 2022
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Zdroj: Scopus
Repositório Institucional da UNESP
Universidade Estadual Paulista (UNESP)
instacron:UNESP
ISSN: 1879-0631
Popis: Made available in DSpace on 2022-05-01T15:46:12Z (GMT). No. of bitstreams: 0 Previous issue date: 2022-05-15 Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP) Aims: This study verified the action of oxytocin (OT) as a preventive measure to control bone damage during aging in female rats. Main methods: Wistar rats received saline (0.15 mol/L/IP; Vehicle Group), Atosiban/AT (300 μg/Kg/IP; At Group), OT (134 μg/Kg/IP; Ot Group), or AT+OT (OT injections 5 min after AT; At+Ot Group), at 19 and 20 months of age. A functional test was performed immediately before and 30 days after the injections to analyze the animals' gait. Key findings: Animals in the At group had higher alkaline phosphatase (ALP) activity, lower cortical and trabecular thickness, fewer trabeculae, higher expression of tartrate-resistant acid phosphatase (TRAP) and lower osteocalcin (OCN), higher cortical porosity, and lower moment of inertia and bone strength at the femoral neck. OT administration increased lipidic peroxidation and plasma superoxide dismutase (SOD), and provided, in the femoral neck, lower expression of TRAP and higher OCN, greater cortical and trabecular thickness, a greater number of trabeculae, bone mineral density (BMD), higher inertia bone strength, and lower cortical porosity. At + Ot group showed great similarity with the vehicle group, higher SOD, and BMD. An increase in stride length and no increase in base width of 21-month-old animals were observed after OT, unlike animal's vehicle or AT. Significance: Endogenous OT plays an important role in the regulation of bone remodeling during periestropause, and exogenous OT stands out as a potential preventive intervention in this period to improve bone quality with functional repercussions, possibly providing better gait activity. Programa de Pós-Graduação Multicêntrico em Ciências Fisiológicas/SBFis/UNESP Department of Basic Sciences School of Dentistry São Paulo State University (UNESP), São Paulo Programa de Pós-Graduação Multicêntrico em Ciências Fisiológicas/SBFis/UNESP Department of Basic Sciences School of Dentistry São Paulo State University (UNESP), São Paulo FAPESP: 013/26779-4 FAPESP: 2012/14464-6
Databáze: OpenAIRE
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