Different chemical fractions of fetal fluids account for their attractiveness at parturition and their repulsiveness during late-gestation in the ewe

Dublin Core

Título

Different chemical fractions of fetal fluids account for their attractiveness at parturition and their repulsiveness during late-gestation in the ewe

Tema

OVINOS
FLUIDOS FETALES
COMPOSICION QUIMICA
BIBLIOGRAFIA NACIONAL QUIMICA
2012

Abstract

We have investigated whether the chemical components of fetal fluids (FFs), which elicit repulsion in late gestating ewes, are also those responsible for the attractiveness of fetal fluids at parturition. An aqueous fraction of FFs (A1), obtained after extraction with hexane, was tested for repulsion in late-pregnant ewes and for attraction at parturition. We also investigated if the repulsive and attractive characteristics of this A1 fraction were maintained after an additional extraction with dichloromethane (DCM, CH2Cl2) that produced two more fractions (aqueous/high polarity: A2 and dichloromethane/medium polarity: DCM). Thus, late-pregnant ewes were tested for repulsion of aqueous extracts of FFs (A1, A2 and DCM fractions) in a two-choice test of food preference, whereas parturient ewes were tested for attraction toward these same fractions in a two-choice test of licking warm spongy cloths. The A1 fraction was repulsive to late-pregnant ewes and attractive to parturient females. In contrast, neither the A2 nor the DCM fractions were repulsive to late-pregnant ewes, whereas both fractions were attractive to parturient ones. The discordance between the repulsive and attractive properties of the A2 and DCM fractions suggests that the attractiveness of FFs for parturient ewes and its repulsiveness for females outside the peripartum period depend on mixtures of substances that are at least partially different. Some compounds with high and medium polarity in the A2 and DCM fractions would act synergistically to generate the repulsiveness of FFs, whereas both high and medium polarity compounds can evoke attraction independently of each other

Autor

Uriarte, Natalia
Agrati Giadans, Daniella Sylvia.
Banchero, Georgget
Zuluaga, María José
Cawen, E.
Olivera, V.
Alsina-Llanes, Marcela.
Poindron, P.
Ferreira, Annabel

Fuente

Physiology and Behavior v. 107, no. 1, 2012. -- p. 45-49

Editor

Elsevier

Fecha

2012

Derechos

Información sobre Derechos de Autor

(Por favor lea este aviso antes de abrir los documentos u objetos)

La legislación uruguaya protege el derecho de autor sobre toda creación literaria, científica o artística, tanto en lo que tiene que ver con sus derechos morales, como en lo referente a los derechos patrimoniales con sujeción a lo establecido por el derecho común y las siguientes leyes

(LEY 9.739 DE 17 DE DICIEMBRE DE 1937 SOBRE PROPIEDAD LITERARIA Y ARTISTICA CON LAS MODIFICACIONES INTRODUCIDAS POR LA LEY DE DERECHO DE AUTOR Y DERECHOS CONEXOS No. 17.616 DE 10 DE ENERO DE 2003, LEY 17.805 DE 26 DE AGOSTO DE 2004, LEY 18.046 DE 24 DE OCTUBRE DE 2006 LEY 18.046 DE 24 DE OCTUBRE DE 2006)

ADVERTENCIA - La consulta de este documento queda condicionada a la aceptación de las siguientes condiciones de uso: Este documento es únicamente para usos privados enmarcados en actividades de investigación y docencia. No se autoriza su reproducción con fines de lucro. Esta reserva de derechos afecta tanto los datos del documento como a sus contenidos. En la utilización o cita de partes debe indicarse el nombre de la persona autora.

Formato

PDF

Idioma

Inglés

Tipo

Artículo

Document Item Type Metadata

Original Format

PDF
Fecha de agregación
October 3, 2017
Colección
Bibliografía Nacional Química
Tipo de Elemento
Document
Etiquetas
, ,
Citación
Uriarte, Natalia, “Different chemical fractions of fetal fluids account for their attractiveness at parturition and their repulsiveness during late-gestation in the ewe,” RIQUIM - Repositorio Institucional de la Facultad de Química - UdelaR, accessed October 21, 2017, http://riquim.fq.edu.uy/items/show/4678.
Archivos