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PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
1
pubmed:dateCreated
2007-4-13
pubmed:abstractText
Retinoic acid (RA) plays an important role in cell growth and tissue development and is also a regulating factor of pituitary function. However, whether RA is generated in the pituitary gland and plays a role as a paracrine and/or autocrine hormone is generally unknown. RA is synthesized from retinoids through oxidation processes. Dehydrogenases catalyzing the oxidation of retinal to RA are members of the retinaldehyde dehydrogenase (RALDH) family. In this study, we examined the expression of RALDH1, RALDH2, and RALDH3 mRNA in the rat embryonic pituitary gland. By in situ hybridization with digoxigenin-labeled cRNA probes, we detected mRNA expression for RALDH2 and RALDH3, but not RALDH1. The expression of RALDH2 and RALDH3 was located in Rathke's pouch at embryonic day 12.5 (E12.5) and subsequently in the developing anterior pituitary gland. We also used quantitative real-time polymerase chain reaction to analyze RALDH2 and RALDH3 mRNA expression levels during the development of the pituitary gland. We found that pituitary RALDH2 and RALDH3 mRNA levels were high at E17.5 and decreased markedly after birth. Our study is the first to show that RALDH2 and RALDH3, but not RALDH1, are expressed in the embryonic anterior pituitary gland of the rat.
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
Apr
pubmed:issn
0302-766X
pubmed:author
pubmed:issnType
Print
pubmed:volume
328
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
129-35
pubmed:meshHeading
pubmed:year
2007
pubmed:articleTitle
Expression of retinaldehyde dehydrogenase (RALDH)2 and RALDH3 but not RALDH1 in the developing anterior pituitary glands of rats.
pubmed:affiliation
Division of Histology and Cell Biology, Department of Anatomy, Jichi Medical University, School of Medicine, 3311-1 Yakushiji, Shimotsuke-shi, Tochigi 329-0498, Japan.
pubmed:publicationType
Journal Article, Research Support, Non-U.S. Gov't