NCBI Logo
GEO Logo
   NCBI > GEO > Accession DisplayHelp Not logged in | LoginHelp
GEO help: Mouse over screen elements for information.
          Go
Series GSE48100 Query DataSets for GSE48100
Status Public on Aug 21, 2013
Title Effect of maternal exposure to dioxin on the pituitary and hypothalamic expression of genes in PND70 male pups
Organism Rattus norvegicus
Experiment type Expression profiling by array
Summary Our previous studies have revealed that treatment of pregnant rats with 2,3,7,8-tetrachlorodibenzo-p-dioxin (TCDD, 1 μg/kg) at gestational day (GD) 15 reduces the pituitary synthesis of luteinizing hormone (LH) during late fetal and early postnatal period, leading to imprinting of defects in sexual behaviors at adulthood. However, it remains obscure how the attenuation of pituitary LH links to sexual immaturity. To address this issue, we firstly performed a DNA microarray analysis to identify the gene(s) responsible for dioxin-induced sexual immaturity, using the pituitary and hypothalamus of male pups, at the age of postnatal day (PND)70, born from TCDD-treated dams. Among the reduced genes, we focused on gonadotropin-releasing hormone (GnRH) in the hypothalamus, because of its role in sexual behaviors suggested so far. The present study strongly suggests that maternal exposure to TCDD fixes the status of the lowered expression of GnRH in the offspring by reducing steroidogenesis at perinatal stage, and this is the mechanism for the imprinting of defects in sexual behaviors at adulthood.
 
Overall design Total RNA was isolated from the pituitary and hypothalamus of PND70 male pups born from the dams treated with TCDD (1 μg/kg) or vehicle at GD15, using an RNeasy Mini Kit (QIAGEN). To identify the gene(s) the altered expression of which is fixed and linked to defects in sexual behaviors, the profile of gene expression was analyzed using the Illumina RatRef-12 Expression BeadChip.
This series includes two dataset; hypothalamic and pituitary samples (each case; N=3x2). The normalization applied each dataset.
 
Contributor(s) Takeda T, Yamada H
Citation(s) 24132183
Submission date Jun 19, 2013
Last update date Jul 29, 2014
Contact name Tomoki Takeda
E-mail(s) takeda@phar.kyushu-u.ac.jp
Phone +81-92-642-6587
Fax +81-92-642-6588
Organization name Kyushu University
Department Pharmaceutical sciences
Lab Molecular life sciences
Street address 3-1-1 Maidashi, Higashi-ku
City Fukuoka
ZIP/Postal code 812-8582
Country Japan
 
Platforms (1)
GPL6101 Illumina ratRef-12 v1.0 expression beadchip
Samples (12)
GSM1168486 C1_pitM
GSM1168487 C4_pitM
GSM1168488 C5_pitM
Relations
BioProject PRJNA208933

Download family Format
SOFT formatted family file(s) SOFTHelp
MINiML formatted family file(s) MINiMLHelp
Series Matrix File(s) TXTHelp

Supplementary file Size Download File type/resource
GSE48100_RAW.tar 2.8 Mb (http)(custom) TAR
GSE48100_non-normalized_data.txt.gz 1.1 Mb (ftp)(http) TXT
Raw data are available on Series record
Processed data included within Sample table

| NLM | NIH | GEO Help | Disclaimer | Accessibility |
NCBI Home NCBI Search NCBI SiteMap