Abstract:
:Differences of cell proliferation, cell cycle, and G(1)/S transition regulatory proteins of gingival fibroblasts derived from nifedipine-reactive patient (NIFr) and nifedipine-non-reactive patient (NIFn) in the presence of basic fibroblast growth factor (bFGF) were investigated to elucidate the mechanism of gingival overgrowth associated with nifedipine, one of the Ca(2+)-channel blockers. The proliferation rate of NIFr cells in the presence of bFGF significantly increased than NIFn cells. The proportion of NIFr cells that had undergone progression to the S and G(2)/M phases from the G(0)/G(1) phase significantly increased compared to that in NIFn cells. Increases of pRB (Ser807/811), pCDK2 (Thr160), CDK2, and cyclin E protein levels in NIFr cells were greater than those in NIFn cells. The elevations of pRB (Ser780), RB, and cyclin A protein levels in NIFr cells did not differ from those of NIFn cells. The growth of NIFr cells was greater than that of NIFn cells as a result of the active G(1)/S transition of NIFr cells, as assessed by the increments of cyclin E, pCDK2, and pRB (ser807/811) protein in NIFr cells.
journal_name
J Pharmacol Scijournal_title
Journal of pharmacological sciencesauthors
Takeuchi R,Matsumoto H,Okada H,Hori M,Gunji A,Hakozaki K,Akimoto Y,Fujii Adoi
10.1254/jphs.fp0060928subject
Has Abstractpub_date
2007-02-01 00:00:00pages
168-74issue
2eissn
1347-8613issn
1347-8648pii
JST.JSTAGE/jphs/FP0060928journal_volume
103pub_type
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