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Choi, Jaemin,Choi, Hyungon,Shin, Donghyeok,Kim, Jeenam,Lee, Myungchul,Kim, Soonheum,Jo, Dongin,Kim, Cheolkeun Korean Society of Plastic and Reconstructive Surge 2018 Archives of Plastic Surgery Vol.45 No.1
Background Temporal hollowing is inevitable after decompressive craniectomy. This complication affects self-perception and quality of life, and various techniques and materials have therefore been used to restore patients' confidence. Autologous fat grafting in postoperative scar tissue has been considered challenging because of the hostile tissue environment. However, in this study, we demonstrate that autologous fat grafting can be a simple and safe treatment of choice, even for postoperative depressed temporal scar tissue. Methods Autologous fat grafting was performed in 13 patients from 2011 to 2016. Fat was harvested according to Coleman's strategy, using a tumescent technique. Patient-reported outcomes were collected preoperatively and at 1-month and 1-year follow-ups. Photographs were taken at each visit. Results The thighs were the donor site in all cases for the first procedure. The median final volume of harvested fat was 29.4 mL (interquartile range [IQR], 24.0-32.8 mL). The median final volume of fat transferred into the temporal area was 4.9 mL on the right side (IQR, 2.5-7.1 mL) and 4.6 mL on the left side (IQR, 3.7-5.9 mL). There were no major complications. The patient-reported outcomes showed significantly improved self-perceptions at 1 month and at 1 year. Conclusions Despite concerns about the survival of grafted fat in scar tissue, we advise autologous fat grafting for patients with temporal hollowing resulting from a previous craniectomy.
Quy Son Luu,Uyen Thi Do,Dokyung Kim,Jiwon Kim,Donghyeok Jo,Quynh Thi Nguyen,Youngbok Lee 한국공업화학회 2022 Journal of Industrial and Engineering Chemistry Vol.105 No.-
This study introduces a facile method for synthesizing covalently bonded magnetic carbon nanoparticles(MCNs) in which carboxylic acid-functionalized activated carbon nanospheres (ACN-COOH) are connectedwith amine-terminated iron oxide nanoparticles (NPs) (Fe3O4-NH2) via a carbodiimide crosslinkingreaction. The adsorption characteristics of the developed magnetic nanoparticles (ACN-Fe3O4) wereinvestigated using a standard cationic dye (methylene blue, MB). Two additional MCNs (multi-coreand core@shell structures) were also prepared, and their adsorption performances were extensively compared. The developed ACN-Fe3O4 material thoroughly utilizes the strengths of activated carbon and Fe3O4themselves, exhibiting large specific surface areas (708.4 m2/g) and strong magnetic properties(40.3 emu/g), resulting in high adsorption capacity (349.5 mg/g) and recycling efficiency (76 % of adsorptionperformance after four cycles). In addition, a study of the mechanism reveals that pore-filling processesare dominant with minor contributions from electrostatic interactions, p–p interactions, and n–p interactions. The developed covalently bonded magnetic carbon nanoparticles (ACN-Fe3O4) can thusbe considered as competent adsorbents with the potential to compensate for the drawbacks of contemporaryMCNs, such as, low adsorption capacity, and weak magnetic properties.