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The Notch Signaling System Is Involved in the Regulation of Reparative Angiogenesis in the Zone of Stasis    
Yazarlar
Ozan Luay Abbas
Ahi Evran Üniversitesi, Türkiye
Orhan Özatik
Dumlupınar Üniversitesi, Türkiye
Yunus Kasım Terzi
Başkent Üniversitesi, Türkiye
Fikriye Yasemin Özatik
Dumlupınar Üniversitesi, Türkiye
Rukiye Nar
Ahi Evran Üniversitesi, Türkiye
Dr. Öğr. Üyesi Gamze TURNA SALTOĞLU Dr. Öğr. Üyesi Gamze TURNA SALTOĞLU
Ahi Evran Üniversitesi, Türkiye
Özet
The Notch pathway ligand Delta-like 4 (Dll4) functions as an antiangiogenic factor, inhibiting vascular endothelial growth factor (VEGF)-induced angiogenesis. This function is documented in tumor and embryonic vasculature. However, its implication in burn wounds remains unexplored. Our objective was to explore the involvement of the Notch in the healing of zone of stasis burns. We hypothesized that anti-Dll4 therapy would prevent progressive necrosis in the stasis zone by promoting angiogenesis. Burns were created in 21 rats using the comb burn model. The Notch inhibitor N-[N-(3,5-difluorophenacetyl)1- alanyl]-S-phenylglycine-t-butyl-ester was administered in the treatment group. Controls were given the same amount of solvent. Seven days after the burn, skin samples were evaluated for VEGF and Dll4 gene expressions. Immunohistochemical analysis was used for the assessment of vascular density, endothelial Dll4 expression, and apoptosis count. Histologic grading of tissue damage was performed. Circulating levels of VEGF and Dll4 were determined. VEGF and Dll4 mRNA levels were found to be simultaneously induced after the burn. In the treatment group, a significant increase in the number of vessels was observed. However, gross evaluation documented an expansion of necrosis to the zone of stasis with marked activation of apoptosis. Histologic assessment showed that the resultant vascular overgrowth was accompanied by extensive edema and abundant infiltration of leukocytes. We provide evidence for the involvement of Notch in the regulation of angiogenesis in zone of stasis burns.
Anahtar Kelimeler
Makale Türü Özgün Makale
Makale Alt Türü SSCI, AHCI, SCI, SCI-Exp dergilerinde yayımlanan tam makale
Dergi Adı JOURNAL OF BURN CARE & RESEARCH
Dergi ISSN 1559-047X
Dergi Tarandığı Indeksler SCI-Expanded
Makale Dili İngilizce
Basım Tarihi 11-2017
Cilt No 38
Sayı 6
Doi Numarası 10.1097/BCR.0000000000000522
Makale Linki http://Insights.ovid.com/crossref?an=01253092-201711000-00015