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Closed for Staff Day
Phone: (843) 766-6635
Wando Mount Pleasant Library
Closed for Staff Day
Phone: (843) 805-6888
Village Library
Closed for Staff Day
Phone: (843) 884-9741
St. Paul's/Hollywood Library
Closed for Staff Day
Phone: (843) 889-3300
Otranto Road Library
Closed for Staff Day
Phone: (843) 572-4094
Mt. Pleasant Library
Closed for Staff Day
Phone: (843) 849-6161
McClellanville Library
Closed for Staff Day
Phone: (843) 887-3699
Keith Summey North Charleston Library
Closed for Staff Day
Phone: (843) 744-2489
John's Island Library
Closed for Staff Day
Phone: (843) 559-1945
Hurd/St. Andrews Library
Closed for Staff Day
Phone: (843) 766-2546
Folly Beach Library
Closed for Staff Day
Phone: (843) 588-2001
Dorchester Road Library
Closed for Staff Day
Phone: (843) 552-6466
John L. Dart Library
Closed for Staff Day
Phone: (843) 722-7550
Baxter-Patrick James Island
Closed for Staff Day
Phone: (843) 795-6679
Main Library
Closed for Staff Day
Phone: (843) 805-6930
Bees Ferry West Ashley Library
Closed for Staff Day
Phone: (843) 805-6892
Miss Jane's Building (Edisto Library Temporary Location)
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9 a.m. - 5 p.m.
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SIRT1 activation promotes bone repair by enhancing the coupling of type H vessel formation and osteogenesis.
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- Author(s): Liu, Zhikai (AUTHOR); Liu, Hanghang (AUTHOR); Liu, Shibo (AUTHOR); Li, Bolun (AUTHOR); Liu, Yao (AUTHOR); Luo, En (AUTHOR)
- Source:
Cell Proliferation. Jun2024, Vol. 57 Issue 6, p1-16. 16p. - Source:
- Additional Information
- Subject Terms:
- Abstract: Bone repair is intricately correlated with vascular regeneration, especially of type H vessels. Sirtuin 1 (SIRT1) expression is closely associated with endothelial function and vascular regeneration; however, the role of SIRT1 in enhancing the coupling of type H vessel formation with osteogenesis to promote bone repair needs to be investigated. A co‐culture system combining human umbilical vein endothelial cells and osteoblasts was constructed, and a SIRT1 agonist was used to evaluate the effects of SIRT1 activity. The angiogenic and osteogenic capacities of the co‐culture system were examined using short interfering RNA. Mouse models with bone defects in the femur or mandible were established to explore changes in type H vessel formation and bone repair following modulated SIRT1 activity. SIRT1 activation augmented the angiogenic and osteogenic capacities of the co‐culture system by activating the PI3K/AKT/FOXO1 signalling pathway and did not significantly regulate osteoblast differentiation. Inhibition of the PI3K/AKT/FOXO1 pathway attenuated SIRT1‐mediated effects. The SIRT1 activity in bone defects was positively correlated with the formation of type H vessels and bone repair in vivo, whereas SIRT1 inhibition substantially weakened vascular and bone formation. Thus, SIRT1 is crucial to the coupling of type H vessels with osteogenesis during bone repair. [ABSTRACT FROM AUTHOR]
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