scholarly journals The Non-ankyrin C Terminus of IκBα Physically Interacts with p53 in Vivo and Dissociates in Response to Apoptotic Stress, Hypoxia, DNA Damage, and Transforming Growth Factor-β1-mediated Growth Suppression

2002 ◽  
Vol 277 (12) ◽  
pp. 10323-10331 ◽  
Author(s):  
Nan-Shan Chang
2009 ◽  
Vol 6 (9) ◽  
pp. 961-968 ◽  
Author(s):  
L. Steven Beck ◽  
Arthur J. Ammann ◽  
Thomas B. Aufdemorte ◽  
Leo Deguzman ◽  
Yvette Xu ◽  
...  

2003 ◽  
Vol 39 (5) ◽  
pp. 742-748 ◽  
Author(s):  
Hiroki Kondou ◽  
Sotaro Mushiake ◽  
Yuri Etani ◽  
Yoko Miyoshi ◽  
Toshimi Michigami ◽  
...  

2011 ◽  
Vol 165 (3) ◽  
pp. 393-400 ◽  
Author(s):  
Thor Ueland ◽  
Tove Lekva ◽  
Kari Otterdal ◽  
Tuva B Dahl ◽  
Nicoleta Cristina Olarescu ◽  
...  

ObjectivePatients with adult onset GH deficiency (aoGHD) have secondary osteoporosis, which is reversed by long-term GH substitution. Transforming growth factor β1 (TGFβ1 or TGFB1) is abundant in bone tissue and could mediate some effects of GH/IGFs on bone. We investigated its regulation by GH/IGF1in vivoandin vitro.Design and methodsThe effects of GH substitution (9–12 months, placebo controlled) on circulating and cortical bone matrix contents of TGFβ1 were investigated in patients with aoGHD. The effects of GH/IGF1 on TGFβ1 secretion in osteoblasts (hFOB), adipocytes, and THP-1 macrophages as well as the effects on release from platelets were investigatedin vitro.ResultsIn vivoGH substitution increased TGFβ1 protein levels in cortical bone and serum.In vitro, GH/IGF1 stimulation induced a significant increase in TGFβ1 secretion in hFOB. In contrast, no major effect of GH/IGF1 on TGFβ1 was found in adipocytes and THP-1 macrophages. Finally, a minor modifying effect on SFLLRN-stimulated platelet release of TGFβ1 was observed in the presence of IGF1.ConclusionGH substitution increases TGFβ1in vivoandin vitro, and this effect could contribute to improved bone metabolism during such therapy, potentially reflecting direct effect of GH/IGF1 on bone cells.


Sign in / Sign up

Export Citation Format

Share Document