Linked Life Data

12215675

Source:http://linkedlifedata.com/resource/pubmed/id/12215675

Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
1
pubmed:dateCreated
2002-9-6
pubmed:abstractText
A single maternal dose of 2,3,7,8-tetrachlorodibenzo-p-dioxin (TCDD) on gestation day (GD) 13 can greatly impair ventral prostate, dorsolateral prostate, anterior prostate, and seminal vesicle development in wild-type C57BL/6 mice. The developmental stages at which these organs are most sensitive to TCDD exposure have now been investigated. Pregnant mice were dosed orally with 5 micro g TCDD/kg or vehicle on GD 13, and their pups were fostered at birth to dams of the same treatment or cross-fostered to dams of the opposite treatment. Additional males had in utero and lactational TCDD exposure following maternal dosing on GD 16. Organ weights and secretory protein, cytokeratin 8, and cyclophilin mRNA expression were determined at 35 days of age. Effects of TCDD on ventral prostate development were due primarily to in utero exposure; the critical window was between GD 13 and birth. Dorsolateral prostate development was inhibited about equally by in utero or lactational exposure, and vulnerability did not begin until GD 16. Anterior prostate development was also affected by both in utero and lactational TCDD exposure, particularly the former. Vulnerability began before GD 16 and continued into postnatal life. Seminal vesicle development was essentially unaffected by in utero or lactational exposure alone but was significantly inhibited by combined exposure, regardless of whether dams were dosed on GD 13 or 16. In summary, the time during which each organ was most vulnerable to TCDD exposure varied from one organ to another. These findings provide insights into the developmental processes that TCDD inhibits in each organ, and demonstrate that TCDD inhibits ventral prostate development before this organ first appears, presumably via effects on the urogenital sinus. The observation that in utero TCDD exposure (alone) inhibited development of each prostate lobe is significant because previous studies have shown that little TCDD is transmitted to mice before birth.
pubmed:grant
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
Sep
pubmed:issn
1096-6080
pubmed:author
pubmed:issnType
Print
pubmed:volume
69
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
202-9
pubmed:dateRevised
2010-9-17
pubmed:meshHeading
pubmed:year
2002
pubmed:articleTitle
Critical windows of vulnerability for effects of 2,3,7,8-tetrachlorodibenzo-p-dioxin on prostate and seminal vesicle development in C57BL/6 mice.
pubmed:affiliation
School of Pharmacy and Molecular and Environmental Toxicology Center, University of Wisconsin, Madison, Wisconsin 53705, USA.
pubmed:publicationType
Journal Article, Research Support, U.S. Gov't, P.H.S., Research Support, Non-U.S. Gov't