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KMID : 0361020230660020106
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Korean Journal of Otolaryngology - Head and Neck Surgery
2023 Volume.66 No. 2 p.106 ~ p.112
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Protective Effect of Locally Injected Polydeoxyribonucleotide in Ischemic Murine Random Skin Flaps
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Kim Ji-Ye
Yang Jae-Moon
Ku Min-Hee
Im Jin-Hyuck
Lee Ji-Yong
Koh Yoon-Woo
Choi Eun-Chang
Sim Nam-Suk
Kim Ji-Hoon
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Abstract
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Background and Objectives This study aimed to investigate the protective effect of poly-deoxyribonucleotide (PDRN) against skin flap necrosis in a murine skin flap model.
Materials and Method Twenty mice with rectangular skin flaps on the dorsum were ran-domly divided into the PDRN (n=10) and pentobarbital sodium (PBS) (n=10) injection groups.
PDRN (8 mg/kg) was subdermally injected at 12 different points immediately after the opera-tion. After 7 days, the flap perfusions were evaluated using a laser speckle contrast imaging(LSCI) system, and specimens were collected for immunohistochemistry analysis.
Results The percentage of survival area relative to the total flap area was significantly higherin the PDRN group (60.87%±7.63%) than in the PBS group (45.23%±10.72%) ( p<0.05). Themean LSCI perfusion signal of the distal part of the skin flap in the PBS group was 0.57±0.12 ,and that in the PDRN group was 0.74±0.13 ( p<0.05). The PDRN group had a significantlylower interleukin 1 beta expression than the PBS group and higher vascular endothelial growthfactor α expression than the PBS group ( p<0.05).
Conclusion These findings suggest that subdermally injected PDRN is more effective inenhancing flap survival during necrosis.
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KEYWORD
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Laser speckle contrast imaging, Necrosis, Polydeoxyribonucleotide, Surgical flaps
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