2020
DOI: 10.1590/1678-4162-11440
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O uso do cloridrato de piridoxina para induzir estro em cadelas

Abstract: RESUMO Os agonistas dopaminérgicos são utilizados para induzir estro em cadelas, pois atuam na síntese e liberação de prolactina. Objetivou-se avaliar o efeito da piridoxina como indutor de estro em cadelas por agir na neurotransmissão dopaminérgica. Foram selecionadas 40 cadelas em anestro, divididas em quatro grupos experimentais, tratadas com 10mg/kg/dia (G1) e 50mg/kg/dia (G2) de cloridrato de piridoxina, 5µg/kg/dia (G3) de cabergolina e grupo controle/placebo (G4) por até 20 dias. Foram realizadas citolog… Show more

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“…Moreover, results of studies on rats treated with vitamin B6 showed a decrease in PRL concentrations, suggesting a dopaminergic effect of pyridoxine on the hypothalamus (Harris et al, 1978). Additionally, a study conducted with French bulldogs found that vitamin B6 (50mg/kg) could interfere in PRL serum concentration in a similar way to cabergoline (5µg/kg) (Silva and Snoeck, 2020), since it acts as a coenzyme in processes of decarboxylation of L-dopa in dopamine, the main inhibiting factor of PRL (Bruice, 2006). Therefore, it is suggested that vitamin B6 may also interfere with the clinical signs of pseudopregnancy, as in the case of ergot-derived drugs (Gobello et al, 2001c).…”
Section: Introductionmentioning
confidence: 99%
“…Moreover, results of studies on rats treated with vitamin B6 showed a decrease in PRL concentrations, suggesting a dopaminergic effect of pyridoxine on the hypothalamus (Harris et al, 1978). Additionally, a study conducted with French bulldogs found that vitamin B6 (50mg/kg) could interfere in PRL serum concentration in a similar way to cabergoline (5µg/kg) (Silva and Snoeck, 2020), since it acts as a coenzyme in processes of decarboxylation of L-dopa in dopamine, the main inhibiting factor of PRL (Bruice, 2006). Therefore, it is suggested that vitamin B6 may also interfere with the clinical signs of pseudopregnancy, as in the case of ergot-derived drugs (Gobello et al, 2001c).…”
Section: Introductionmentioning
confidence: 99%