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Effect on the expression of drd2 and drd3 after neonatal lesion in the lymphocytes, nucleus accumbens, hippocampus and prefrontal cortex: comparative analysis between juvenile and adult Wistar rats.
Genis-Mendoza, Alma Delia; Tovilla-Zárate, Carlos Alfonso; López-Narvaez, Lilia; Mendoza-Lorenzo, Patricia; Ostrosky-Wegman, Patricia; Nicolini, Humberto; González-Castro, Thelma Beatriz; Hernández-Diaz, Yazmin.
Afiliação
  • Genis-Mendoza AD; Instituto Nacional de Medicina Genómica (INMEGEN), Servicios de Atención Psiquiátrica (SAP), Secretaria de Salud, D.F. Mexico, Mexico.
  • Tovilla-Zárate CA; División Académica Multidisciplinaria de Comalcalco, Universidad Juárez Autónoma de Tabasco, Comalcalco, Tabasco Mexico.
  • López-Narvaez L; Hospital General de Yajalón, Secretaria de Salud. Yajalón, Chiapas, Mexico.
  • Mendoza-Lorenzo P; Instituto de Investigaciones Biomédicas, UNAM, D.F, Mexico, Mexico.
  • Ostrosky-Wegman P; Instituto de Investigaciones Biomédicas, UNAM, D.F, Mexico, Mexico.
  • Nicolini H; Instituto Nacional de Medicina Genómica (INMEGEN), Servicios de Atención Psiquiátrica (SAP), Secretaria de Salud, D.F. Mexico, Mexico ; Carracci Medical Group, Carracci 107. Insurgentes Extremadura, Ciudad de México, D.F. 13740 Mexico.
  • González-Castro TB; División Académica Multidisciplinaria de Jalpa de Méndez, Universidad Juárez Autónoma de Tabasco, Jalpa de Méndez, Tabasco Mexico.
  • Hernández-Diaz Y; División Académica Multidisciplinaria de Jalpa de Méndez, Universidad Juárez Autónoma de Tabasco, Jalpa de Méndez, Tabasco Mexico.
Hereditas ; 153: 13, 2016.
Article em En | MEDLINE | ID: mdl-28096775
ABSTRACT

BACKGROUND:

Neonatal lesion in the ventral hippocampus (NLVH) is a validated animal model to study schizophrenia from a neurodevelopmental perspective. This animal model is also used to investigate how neonatal lesions may alter the genetic expression of dopaminergic receptors. The present study compares mRNA expression levels of dopamine receptors (drd2 and drd3) in lymphocytes and brain of NLVH animals at two different age stages young and adult.

METHODS:

The NLVH procedure was performed on 20 male Wistar rats at postnatal days 5-7. The mRNA expression levels of drd2 and drd3 genes in lymphocytes, nucleus accumbens, hippocampus and prefrontal cortex were measured and analyzed at postnatal days 45 and 90. The results were compared and contrasted with respective sham groups.

RESULTS:

In lymphocytes, only in NLVH-adult group we observed drd2 mRNA expression, while drd2 mRNA expression was not observed in the NLVH-juvenile rats; on the other hand, the drd3 mRNA expression did not show significant statistical differences. In hippocampus no differences were observed between drd2 mRNA or drd3 mRNA expression when comparing juvenile/adult shams with NLVH groups. In the prefrontal area, a decrease in drd2 mRNA expression levels were observed in the NLVH-adult group (F(1,3) = 52.83, p = 0,005) in comparison to the sham-adult group. Finally, in the nucleus accumbens, a strong decrease of drd3 mRNA expression was observed in the NLVH-adult group in comparison to the sham-adult group (F(1,3) = 123,2, p < 0.001).

CONCLUSIONS:

Our results show that differences in drd2 and drd3 mRNA levels in NLVH-adults are patent when compared to the sham-adult group or with the NLVH-juvenile group. These findings suggest that the expression levels may be regulated during adulthood, leading to behavioral and neurochemical changes related to schizophrenia. Therefore, more studies are necessary to determine the role of dopamine receptors as possible molecular markers for neurodevelopmental changes associated with schizophrenia.
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Texto completo: 1 Base de dados: MEDLINE Assunto principal: Esquizofrenia / Receptores de Dopamina D2 / Córtex Pré-Frontal / Receptores de Dopamina D3 / Hipocampo / Núcleo Accumbens Tipo de estudo: Prognostic_studies Limite: Animals Idioma: En Revista: Hereditas Ano de publicação: 2016 Tipo de documento: Article País de afiliação: México

Texto completo: 1 Base de dados: MEDLINE Assunto principal: Esquizofrenia / Receptores de Dopamina D2 / Córtex Pré-Frontal / Receptores de Dopamina D3 / Hipocampo / Núcleo Accumbens Tipo de estudo: Prognostic_studies Limite: Animals Idioma: En Revista: Hereditas Ano de publicação: 2016 Tipo de documento: Article País de afiliação: México