Granulocyte Colony-Stimulating Factor Minimizes Negative Remodeling of Decellularized Small Diameter Vascular Graft Conduits but Not Medial Degeneration

BACKGROUND: Poor endothelialization and intimal hyperplasia are major causes of small diameter vascular conduit (SDVC) failure. The present study was aimed to investigate the influence of granulocyte colony-stimulating factor (G-CSF) on inhibiting adverse remodeling of decellularized SDVCs. METHODS: Sprague-Dawley rats implanted with allograft infra renal abdominal aortic conduits were divided into 2 groups according to whether they were treated with G-CSF (+G-CSF group; n = 6) or without (Decell group; n = 6). The conduits were harvested at 8 weeks after surgery and examined for intimal hyperplasia, collagen deposition, and α –actin staining cells. The medial layer was also examined for signs of cellular repopulation and changes in the elastic fiber morphology. RESULTS: Intergroup comparison of the intimal composition showed relatively sparse collagen content and predominance of α –actin staining cells in the +G-CSF group. The medial layer in the 2 groups showed similar degrees of elastic fiber degeneration and wall thinning relative to the normal aortic wall. However, the enhanced staining for von Willebrand factor and CD31, along with transmission electron microscopy findings of superior cellular and ultrastructural preservation, suggested that the remodeling and endothelialization in the +GCSF conduits were superior to those in the Decell conduits. CONCLUSIONS: This study suggests that G-CSF exerts a positive influence on inhibiting adverse vascular remodeling of decellularized vascular conduit implants. However, whether G-CSF administration may also effectuate an improved ability to preserve the medial structural integrity is unclear.

Author dc:creator

• 강, 준규

Contributors dc:contributor

• 이, 철주
• 대학원 의학과
• 199924307

• G-CSF
• 탈세포화된 소구경 이식도관
• 내막의 과형성
• 부정적인 리모델링
• decellularized small diameter vascular conduit
• intimal hyperplasia
• negative remodeling

Language dc:language

ko

Identifier

http://dcoll.ajou.ac.kr:9080/dcollection/jsp/common/DcLoOrgPer.jsp?sItemId=000000016863
000000016863

OAI identifier oai:identifier

oai:repository.ajou.ac.kr:201003/10910