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Impact of gestational and lactational phthalate exposure on hypothalamic content of amino acid neurotransmitters and FSH secretion in peripubertal male rats.
Carbone, Silvia; Szwarcfarb, Berta; Ponzo, Osvaldo; Reynoso, Roxana; Cardoso, Nancy; Deguiz, Laura; Moguilevsky, Jaime A; Scacchi, Pablo.
Afiliação
  • Carbone S; Departamento de Fisiología, Facultad de Medicina, Universidad de Buenos Aires, Paraguay 2155, Buenos Aires, Argentina.
Neurotoxicology ; 31(6): 747-51, 2010 Dec.
Article em En | MEDLINE | ID: mdl-20600290
This study investigated the effect of the pre- and perinatal exposure to di-(2-ethylhexyl) phthalate (DEHP) on the neuroendocrine parameters that regulate reproduction in peripubertal male rats. DEHP at dose of 3 and 30mg/kg bw/day was administered orally to female rat since pregnancy onset until weaning. The male litters were sacrificed at 30 days of age to determine gonadotropin serum level and the hypothalamic contents of the amino acids aspartate and gamma-aminobutyric acid. No changes in gonadotropin, aspartate and gamma-aminobutyric acid levels were detected at the low dose. DEHP 30mg/kg bw/day reduced testis weight and serum FSH, in correlation with a significant increase in the inhibitory GABAergic tone and a reduction in the stimulatory effect of aspartate on gonadotropin level. This study provides unknown data regarding changes in the hypothalamic contents of the amino acid neurotransmitters, which are involved in the neuroendocrine regulation of reproductive axis, in peripubertal male rat offspring from dams exposed to DEHP during gestational and lactational periods. This could be related with the gonadotropin modifications also here described.
Assuntos

Texto completo: 1 Coleções: 01-internacional Base de dados: MEDLINE Assunto principal: Efeitos Tardios da Exposição Pré-Natal / Maturidade Sexual / Neurotransmissores / Dietilexilftalato / Hormônio Foliculoestimulante / Hipotálamo Limite: Animals / Pregnancy Idioma: En Revista: Neurotoxicology Ano de publicação: 2010 Tipo de documento: Article País de afiliação: Argentina País de publicação: Holanda

Texto completo: 1 Coleções: 01-internacional Base de dados: MEDLINE Assunto principal: Efeitos Tardios da Exposição Pré-Natal / Maturidade Sexual / Neurotransmissores / Dietilexilftalato / Hormônio Foliculoestimulante / Hipotálamo Limite: Animals / Pregnancy Idioma: En Revista: Neurotoxicology Ano de publicação: 2010 Tipo de documento: Article País de afiliação: Argentina País de publicação: Holanda