Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
1
pubmed:dateCreated
1985-8-9
pubmed:abstractText
The authors studied the effects of soluble syncytiotrophoblast extract (STE) on the proliferative responses of lymphocytes to different lectins (PHA and Con A) and to allogeneic cells in one-way mixed lymphocyte cultures. STE suppressed lymphocyte reactivity to lectins and to allogeneic cell cultures. The inhibitory effect was dose dependent. Increased concentrations of lectins failed to overcome the inhibitory effect of STE. Lymphocytes preincubated with STE for 18 hr, then washed and exposed to lectins still exhibited an inhibition of cellular proliferation. STE added to lymphocyte cultures at various times in the presence of both mitogens or of allogeneic cells continued to inhibit lymphoproliferative responses even when it was added after 43 hr of cell culture. Furthermore, STE was able to reduce the spontaneous proliferation of tumor cell lines K562 and LHN13 maintained in vitro culture prior to testing. In all cases, the inhibition observed was not due to lymphocytotoxicity or to tumor cell mortality. The inhibitory effect of STE on the proliferative responses of lymphocytes to stimulants may be due to a cytostatic effect that may represent a contributing factor in the nonrejection of the fetus by a competent immune system.
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
May
pubmed:issn
8755-8920
pubmed:author
pubmed:issnType
Print
pubmed:volume
8
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
20-6
pubmed:dateRevised
2009-9-7
pubmed:meshHeading
pubmed:year
1985
pubmed:articleTitle
Effect of human syncytiotrophoblast extract on in vitro proliferative responses.
pubmed:publicationType
Journal Article, In Vitro, Research Support, Non-U.S. Gov't