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대퇴박근 근피판을 이용한 Fournier's gangrene치험례
이석기,이종원,이형주,임풍 大韓成形外科學會 1991 Archives of Plastic Surgery Vol.18 No.1
Fournier's gangrene is a progressive tissue necrosis of scrotum, this disease commonly occured in alcoholics and diabetic patients. 60 year old patient shows toxic symptom and even sepsis, but the scrotal content is to be spared. The treatment of this disease is adequate debridement and administration of sensitive antibiotics. If the scrotal content is exposed, the defect can be covered with skin graft, local flap, etc. But, when the scrotum shows marked fibrosis or inflammation, myocutaneous flap is inevitable. We experienced one case of scrotal defect due to Fournier's gangrene, which was successfully covered with gracilis myocutaneous flap.
Rhie, Jong Won,Cho, Hyun Mi,Lee, Hee Young,Han, Dong Keun Trans Tech Publications, Ltd. 2007 Key Engineering Materials Vol.342-343 No.-
<P>Human adipose tissue contain a population of pluripotent stem cells capable of differentiating along multiple mesenchymal cell lineages. The goal of this study was to examine the chondrogenic potential of adipose-derived stem (ADS) cells. ADS cells were isolated from human subcutaneous adipose tissue obtained by lipectomy and liposuction, and were expanded and grown in vitro with or without chondrogenic medium in micromass culture condition and 3D culture condition in PLGA(poly(lactic-co-glycolic acid)) scaffold. Human ADS cells of micromass culture condition and 3D culture condition in PLGA scaffolds, were differentiated with chondrogenic medium consisted of transforming growth factor-β1, insulin-transferrin-selenium, dexamethasone and ascorbate-2-phosphate. ADS cells abundantly synthesized cartilage matrix molecules including collagen type II, VI and link protein. ADS cells under high-density micromass culture condition with chondrogenic medium formed well defined nodules within 48 hours of induction. On the 3rd week after chondrogenic differentiation of ADS cells under the micromass culture condition and 3D culture condition of PLGA scaffold, mRNA of type II collagen, type VI collagen and link protein were expressed by reverse transcription polymerase chain reaction (RT-PCR). On the 3weeks, content of glycosaminoglycan in cells treated with chondrogenic medium was greater than that with non chondrogenic medium(control).On the 3rd week culture under the chondrogenic medium, hematoxylin & eosin (H & E) staining, alcian blue staining and type II collagen immunohistochemistry analysis confirmed the chondrogenic differentiation in micromass and 3D cultured specimen. These findings document the ability of ADS cells to produce characteristic cartilage matrix molecules, and provide the possibility of cartilage regeneration for cartilage substitution.</P>
Implantation of Cultured Preadipocyte Using Chitosan/Alginate Sponge
Rhie, Jong Won,Song, Jin Kyung,Lee, Paik Kwon,Ahn, Sang Tae Trans Tech Publications, Ltd. 2007 Key Engineering Materials Vol.342-343 No.-
<P>Alginate was a proven biocompatible biomatrice for cells but it was known not to provide a proper microenvironment needed for the proliferation of cells because of its anionic property, which caused its low affinity for cells. Water-soluble chitosan was well known as wound healing material and it also had cationic property which helped cell-to-matrix adhesion. The purpose of this study is to assess the ability of a chitosan/alginate mixed sponge as a scaffold for preadipocytes to serve as a biological implant for soft tissue augmentation. Chitosan/alginate and calcium alginate sponges were made by lyophilizing of alginate with water-soluble chitosan mixture and with calcium chloride mixture, respectively, and those were observed by SEM. Preadipocytes seeded in those sponges were cultured for 2 weeks. In vivo study was designed that chitosan/alginate sponges with and without preadipocytes were implanted subcutaneously into nude mouse. Chitosan/alginate and calcium alginate sponges which had highly porosity and 50-200㎛ pore size. In the chitosan/alginate sponge, the levels of DNA amount were significantly higher than those in calcium alginate sponge (P<0.05). In both groups, they increased progressively with time. On the in vivo study, it was observed that adipose tissue layer in the margin of chitosan/alginate sponge on the 2 weeks after implantation of nude mouse. On the 8 weeks after implantation, thick layer of adipose tissue and neovascularization were observed in the chitosan/alginate sponge. Consequently, chitosan/alginate sponge provided proper microenvironment to human preadipocyte, increased the cell proliferation and maintained the pore that offered neovascularization, so turned out to be effective form of fat transplantation for soft tissue augmentation and reconstruction.</P>
A Pilot Study of Skin Resurfacing Using the 2,790-nm Erbium:YSGG Laser System
Rhie, Jong Won,Shim, Jeong Su,Choi, Won Seok Korean Society of Plastic and Reconstructive Surge 2015 Archives of Plastic Surgery Vol.42 No.1
Background The erbium:yttrium scandium gallium garnet (Er:YSGG) laser differs from other laser techniques by having a faster and higher cure rate. Since the Er:YSGG laser causes an appropriate proportion of ablation and coagulation, it has advantages over the conventional carbon dioxide ($CO_2$) laser and the erbium-doped yttrium aluminum garnet (Er:YAG) laser, including heating tendencies and explosive vaporization. This research was conducted to explore the effects and safety of the Er:YSGG laser. Methods Twenty patients participated in the pilot study of a resurfacing system using a 2,790-nm Er:YSGG laser. All patients received facial treatment by the 2,790-nm Er:YSGG laser system (Cutera) twice with a 4-week interval. Wrinkle reduction, reduction in pigment inhomogeneity, and improvement in tone and texture were measured. Results Study subjects included 15 women and five men. Re-epithelization occurred in all subjects 3 to 4 days after treatment, and wrinkle reduction, reduction in pigment inhomogeneity, and improvement in tone and texture within 6 months of treatment. Conclusions The 2,790-nm YSGG laser technique had fewer complications and was effective in the improvement of scars, pores, wrinkles, and skin tone and color with one or two treatments. We expect this method to be effective for people with acne scars, pore scars, deep wrinkles, and uneven skin texture and color.
이종원,한기택,이상호,김진철,임풍 大韓成形外科學會 1988 Archives of Plastic Surgery Vol.15 No.4
Bony sculpturing of face is rapidly becoming a part of cosmetic surgery and is a natural spinoff of craniofacial and maxillofacial surgery. Hyperpneumatization of frontal sinus has an atavistic condition, producing a gorilla type, characterized by frontal bossing and supraorbital protrucing. In case 1, frontal sinus must be opened through a sinus osteotomy and then entire anterior sinus wall set back, and adjacent supraorbital and frontal bossing can be corrected by contouring or reshaping with a bur. In case 2, frontal and supraorbital bossing can be corrected by contouring of protruding bone and then augmenting the concavity above frontal bossing with autogenous cranial bone onlay graft. The results were fairly satisfactory judging from cosmetic viewpoint.