홍기용 교수
Hong, Ki Yong
서울대학교 성형외과학교실 · 의학
연구실 소개
홍기용 교수의 연구실은 지방 tissue의 생물학적 특성과 재생의학적 응용에 중점을 두고 있으며, 특히 지방줄기세포 기반의 세포 보조 지방 이식(CAL) 기법의 기전과 임상적 응용을 중심으로 연구를 진행하고 있습니다. 태반기 발달 과정에서 지방세포 전구세포의 동적 변화를 규명하고, 지방 이식 후 생체 내 세포 이동 및 조직 재생 메커니즘을 추적함으로써 지방 이식의 성공률 향상에 기여하고자 합니다. 또한, 유방 재건, 손가락 단위 재건 등 다양한 외과적 재건 수술에서의 지방 이식의 안정성과 생존률을 높이기 위한 기초 및 임상 연구를 병행하고 있습니다.
연구 현황
연구 성과 추이
표시된 성과는 수집된 데이터 기준으로 산출되며, 일부 차이가 있을 수 있습니다.
주요 논문
15The authors characterized the dynamic changes occurring in donor adipose-derived stromal cells and fat and recipient tissue by tracing these cellular components following cell-assisted lipotransfer. The authors' findings highlight the therapeutic value of cell-assisted lipotransfer in tissue transplantation.
Despite the growing interest in adipose tissue as a therapeutic target of metabolic diseases, the identity of adipocyte precursor cells (preadipocytes) and the formation of adipose tissue during embryonic development are still poorly understood. Here, we clarified the identity and dynamic processes of preadipocytes in mouse white adipose tissue during embryogenesis through direct examination, lineage tracing and culture systems. Surprisingly, we found that lipid-lacking but perilipin(+) or adipo
Consistent with results of cell-assisted lipotransfer, adipose-derived stromal cell supplementation by systemic administration led to improved retention of the fat graft. The findings broaden the surgical options for fat grafting and enhance the clinical value of cell-assisted lipotransfer.
Over the last decade, there has been an increase in mastectomy and breast reconstruction, and the pace of increase accelerated after the expansion of NHIS coverage. It is expected that breast reconstruction will be a routine option for patients with breast cancer under the NHIS.
The composite graft is the only surgical method that is able to maintain digital length and provide soft tissue coverage without donor site morbidities in microsurgically non-replantable fingertip amputations. This study aimed to explore the risk factors that determine the survival of composite grafts. Clinical characteristics associated with graft survival were retrospectively analysed by a comparison between the graft survival and failure groups. Of 94 patients who underwent a composite graft
Autologous fat grafts are widely used in soft-tissue augmentation and reconstruction. To reduce the unpredictability of fat grafts and to improve their long-term survival, cell-assisted lipotransfer (CAL) was introduced. In this alternative method, autologous fat is mixed and grafted with stromal vascular fraction cells or adipose-derived stem/stromal cells (ASCs). In regenerative medicine, ASCs exhibit excellent therapeutic potential and are also simple to harvest. Although the efficacy of CAL
Temporal hollowing is a common complication of surgical dissection in the temporal region. As it is a serious cosmetic problem, the need for reconstruction is increasing. Advances in medical imaging, computer software, 3-dimensional printing technology, and biochemistry have enabled surgeons to use patient-specific implants for correction of craniofacial deformities. Titanium, polymethylmethacrylate, and polyetheretherketone are representative materials of the alloplastic implant. In this articl
Non-encapsulated lipomas and their ASCs showed distinct lymphatic histology and cellular response. These findings elucidated the pathogenesis and pathophysiology of lipomas.
In the event of vascular thrombosis after free flap breast reconstruction, direct thrombectomy at the proximal pedicle stump beside the anastomosis opening appears to be an effective and reliable option that minimizes vessel trauma related to conventional catheter use. © 2016 Wiley Periodicals, Inc. Microsurgery 37:402-405, 2017.
Therapeutic, II.
Although malignancy needs to be primarily ruled out, late hematoma can occur beyond expectations, especially in anticoagulated patients, and must be included in the differential diagnosis.
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