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The effects of labour and of interleukin 1 beta upon the expression of nuclear factor kappa B related proteins in human amnion
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UNSPECIFIED (2003) The effects of labour and of interleukin 1 beta upon the expression of nuclear factor kappa B related proteins in human amnion. MOLECULAR HUMAN REPRODUCTION, 9 (4). pp. 213-218. doi:10.1093/molehr/gag026 ISSN 1360-9947.
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Official URL: http://dx.doi.org/10.1093/molehr/gag026
Abstract
Human labour is associated with persistently increased nuclear factor kappa 13 (NF-kB) activity in amnion. In this study we have shown that this involves only the p65 and p50 NF-kB subunits and is associated with an increase in the expression of p65 (P < 0.05), and of the NF-kB binding proteins IkBa, IkBb-1 and IkBb-2 (P < 6.05). Interleukin-1b stimulation leads to rapid degradation and resynthesis of IkBa within 2 It, and a decrease in IkBb-1 without a return to full expression by 2 h, but has little effect upon IkBb-2. IkBb-2 was found in both the cytosolic and nuclear protein fractions. These findings demonstrate that persistently increased NF-kB activity in amnion occurs despite increased expression of the inhibitory IkBa protein and is not mediated by persistant I-kappa kinase activity or inhibition of IkBa synthesis. The increased expression and nuclear localization of IkBb-2 suggests that its function may be to protect NF-kB from inactivation by IkBa and to maintain NF-kB-mediated gene. transcription.
Item Type: | Journal Article | ||||
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Subjects: | Q Science > QH Natural history > QH301 Biology R Medicine > RG Gynecology and obstetrics |
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Journal or Publication Title: | MOLECULAR HUMAN REPRODUCTION | ||||
Publisher: | OXFORD UNIV PRESS | ||||
ISSN: | 1360-9947 | ||||
Official Date: | April 2003 | ||||
Dates: |
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Volume: | 9 | ||||
Number: | 4 | ||||
Number of Pages: | 6 | ||||
Page Range: | pp. 213-218 | ||||
DOI: | 10.1093/molehr/gag026 | ||||
Publication Status: | Published |
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