Linked Life Data

11532877

Source:http://linkedlifedata.com/resource/pubmed/id/11532877

Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
9
pubmed:dateCreated
2001-9-4
pubmed:abstractText
Lindane (gamma-hexachlorocyclohexane) is a lipid-soluble pesticide that exerts carcinogenic and reprotoxic properties. The mechanisms by which lindane alters testicular function are unclear. Sertoli cells control germ cell proliferation and differentiation through cell-cell communication, including gap junction intercellular communication. Using the 42GPA9 Sertoli cell line, we show that lindane, at a non-cytotoxic dose (50 microM), abolished gap junction intercellular communication (GJIC) between adjacent cells. This change was associated with a time-related diminution and redistribution of Cx43 from the membrane to the cytoplasmic perinuclear region. A similar alteration was observed for ZO-1, a tight junction component associated with Cx43, but not for occludin, an integral tight junction protein. After a 24 h lindane exposure, Cx43 and ZO-1 colocalized within the cytoplasm and no modification of non-phosphorylated and phosphorylated isoforms of Cx43 was observed. By double immunofluorescent labelling we demonstrate that the cytoplasmic Cx43 signal was not present in either the endoplasmic reticulum/Golgi apparatus or lysosomes. These results suggest that lindane inhibits GJIC between Sertoli cells and that aberrant Cx43/ZO-1 localization may be responsible for this effect. The alterations in gap junctions induced by lindane in 42GPA9 Sertoli cells are similar to those observed in tumour cells and may be involved in the pathogenesis of neoplastic seminomal proliferation.
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
Sep
pubmed:issn
0143-3334
pubmed:author
pubmed:issnType
Print
pubmed:volume
22
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
1537-42
pubmed:dateRevised
2006-11-15
pubmed:meshHeading
pubmed:year
2001
pubmed:articleTitle
Disruption of gap junctional intercellular communication by lindane is associated with aberrant localization of connexin43 and zonula occludens-1 in 42GPA9 Sertoli cells.
pubmed:affiliation
INSERM EMI 00-09, IFR 50, Faculté de Médecine, Avenue de Valombrose, 06107 Nice Cedex, France.
pubmed:publicationType
Journal Article, Research Support, Non-U.S. Gov't