Fusi, Jasmine
17-ß-Estradiol and Testosterone concentrations in claws of puppies up to 60 days of age [Articolo]
Department of Health, Animal Science and Food Safety (VESPA), 2018-06-12

IntroductionThe current 30% of canine perinatal mortality (Tonnessen et al., 2012) claims the need to deepen the knowledge about this phase, characterized by long-term hormonal and metabolic changes, that could benefit of long time-frame methods of investigation, reducing the quantity of samplings and respecting animal welfare (Veronesi et al., 2015). Therefore, blood, saliva, urine and feces, being invasive and providing punctual information, are not appropriate matrices.Given that sexual steroid hormones were reported to have an influence already from the perinatal period (Frey et al., 2017), in this work 17-β-Estradiol (E2) and Testosterone (T) concentrations were assessed from the claws of dogs up to 60 days of age. Material and MethodsTen male and 10 female puppies, viable and healthy, born by elective cesarean section, were enrolled. Samplings were performed by trimming claws at birth, and the regrowth at 30 and 60 days of age. Then, E2 and T concentrations were analyzed by RIA (Veronesi et al., 2015) and a possible effect of gender evaluated. ResultsAll the hormonal claws concentrations showed a significant (p<0.001) drop from birth to 30 and 60 days of age, while no significant changes were observed between 30 and at 60 days of age (Table 1). No influence of the newborns’ gender was found. Discussion and ConclusionsBecause of the high levels of E2 and T observed at birth and at 30 days of age, it could be supposed that a source of production could be the placental and maternal compartments. However, the direct involvement of the fetus itself could not be excluded, given the reported accumulation from the nail capillary bed of those hormones (de Berker et al., 2007) and the production of sexual steroid hormones by feline fetal gonads (Braun and Jewgenow, 2017).

Diritti: Copyright (c) 2018 International Journal of Health, Animal Science and Food Safety
In relazione con: https://riviste.unimi.it/index.php/haf/article/view/9992/9832
Sorgente: International Journal of Health, Animal Science and Food Safety; V. 5 N. 1s (2018)
Sorgente: International Journal of Health, Animal Science and Food Safety; Vol 5 No 1s (2018)
Sorgente: 2283-3927
oai:ojs.riviste.unimi.it:article/9992. | 10.13130/2283-3927/9992
Peric, Tanja
Bergamin, Cristina
Veronesi, Maria Cristina

Articoli digitali. | Lingua: Inglese. | Paese: | BID: EJ21001622
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