Academic Journal
Low‐dose estrogen release from silastic capsule enhanced flap wound healing in an animal model
| العنوان: | Low‐dose estrogen release from silastic capsule enhanced flap wound healing in an animal model |
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| المؤلفون: | Wang, Yi‐Wen, Chen, Chun‐Ting, Chou, Kai‐Chieh, Huang, Shih‐Ming, Ou, Kuang‐Ling |
| المساهمون: | Medical Affairs Bureau |
| المصدر: | International Wound Journal ; volume 21, issue 10 ; ISSN 1742-4801 1742-481X |
| بيانات النشر: | Wiley |
| سنة النشر: | 2024 |
| المجموعة: | Wiley Online Library (Open Access Articles via Crossref) |
| الوصف: | Background Deep and extensive wounds usually cannot be closed directly by suturing or skin grafting. Flap transplantation is typically used to reconstruct large wounds clinically. The flap survival is based on a stable blood perfusion. It is established that estrogen promotes wound healing and angiogenesis, and regulates the inflammatory response, leading to enhanced flap survival after transplantation. However, estrogen concentrations administered in previous studies were significantly higher than physiological levels, potentially causing systemic side effects. Estrogen‐sustained‐release silastic capsules can maintain blood serum estrogen closer to physiological levels. This study aimed to investigate whether administering estrogen at a lower concentration, closer to physiological levels, could still enhance flap survival. Materials and Methods This study was performed in a random skin flap model in ovariectomized (OVX) mice. Sustained‐release estrogen silastic capsules were implanted into OVX mice to determine the functional role of estrogen in wound healing after flap transplantation. Flap blood perfusion was analysed using a colour laser Doppler scanner. Immunohistochemical staining of CD31, hypoxia‐inducible factor 1 alpha (HIF‐1α), alpha–smooth muscle actin (α‐SMA), cleaved caspase 3 and apoptotic terminal dUTP nick end‐labelling stain was used to investigate flap angiogenesis, tissue hypoxia, wound healing and cell death in the flap tissue, respectively. Results We observed that administering estrogen at a lower concentration enhanced superficial blood perfusion while reducing the flap's ischemic area and tissue necrosis. HIF‐1α expression was significantly decreased in the dermis layer but not in the fascia, whereas cleaved caspase 3 levels decreased in the fascia but remained unchanged in the dermis. Additionally, there was no significant difference in CD31and α‐SMA expression between the groups. Conclusion In summary, the study showed that an estrogen silastic capsule maintained physiological ... |
| نوع الوثيقة: | article in journal/newspaper |
| اللغة: | English |
| DOI: | 10.1111/iwj.70083 |
| الاتاحة: | http://dx.doi.org/10.1111/iwj.70083 https://onlinelibrary.wiley.com/doi/pdf/10.1111/iwj.70083 |
| Rights: | http://creativecommons.org/licenses/by-nc-nd/4.0/ |
| رقم الانضمام: | edsbas.97AD22BF |
| قاعدة البيانات: | BASE |
| DOI: | 10.1111/iwj.70083 |
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