Abstract:
:Bradykinin stimulates [3H]thymidine incorporation and DNA synthesis in resting, serum-deprived NIL8 hamster cells. The ED50 for this stimulation is 4.52 +/- 2.91 nM. Other kinin peptides including lys-bradykinin (kallidin) and met-lys-bradykinin also stimulate [3H]thymidine incorporation in the NIL8 cells, whereas desarg9-bradykinin is without effect, suggesting action of the kinin peptides through type B2 receptors. Bradykinin also stimulates DNA synthesis in IMR-90 human fibroblasts; however, this effect is observed only in the presence of indomethacin, which blocks prostaglandin synthesis. These results suggest that prostaglandins act as negative modulators of the growth-stimulatory effects of bradykinin in the fibroblasts. This conclusion is supported by the observation that exogenously added PGE1, PGE2, PGA1, PGA2, PGB1, and PGB2 strongly inhibit [3H]thymidine incorporation in the human fibroblasts. The direct effect of bradykinin observed in the NIL8 cells may be attributable to the relative resistance of these cells to growth inhibition by prostaglandins.
journal_name
Exp Cell Resjournal_title
Experimental cell researchauthors
Straus DS,Pang KJdoi
10.1016/0014-4827(84)90358-6subject
Has Abstractpub_date
1984-03-01 00:00:00pages
87-95issue
1eissn
0014-4827issn
1090-2422pii
0014-4827(84)90358-6journal_volume
151pub_type
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journal_title:Experimental cell research
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journal_title:Experimental cell research
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journal_title:Experimental cell research
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journal_title:Experimental cell research
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journal_title:Experimental cell research
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