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논문 기본 정보

자료유형
학술저널
저자정보
홍성표 (차의과학대학교) 김원희 (차의과학대학교) 유준환 (차의과학대학교) 유인경 (차의과학대학교) 권창일 (차의과학대학교)
저널정보
연세대학교 의과대학 Yonsei Medical Journal Yonsei Medical Journal 제64권 제3호
발행연도
2023.3
수록면
167 - 174 (8page)
DOI
10.3349/ymj.2022.0342

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Purpose: There are no effective treatment methods with which to control complications of radiation proctitis with fistula or re current bleeding following radiation treatment for prostate, cervical, or rectal cancer. Mesenchymal stem cells (MSCs) can induce immune modification, resulting in tissue repair and regeneration. Therefore, we used a rat model of radiation-induced proctitis and observed the effects of using human placenta-derived (PD) and adipose tissue-derived (AD) MSCs. Materials and Methods: Female Sprague Dawley rats were irradiated at the pelvic area with 25 Gy. We injected 1×106 cells of hu man PD-MSCs, human AD-MSCs, human foreskin fibroblasts, and control media into the rectal submucosa following irradia tion. We sacrificed rats for pathologic evaluation. Results: Fibrosis on the rectum was reduced in both MSC groups, compared to the control group. Mucosal Ki-67 indices of both MSC injected groups were higher than those in the control group. Although caspase-3 positive cells in the mucosa gradually in creased and decreased in the control group, those in both MSC injected groups increased rapidly and decreased thereafter. Conclusion: We demonstrated the effects of regional MSC injection treatment for radiation-induced proctitis in rats. MSC injec tion reduced fibrosis and increased proliferation in rat mucosa. Human AD-MSCs and PD-MSCs had similar effectiveness.

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