1.Efficacy of ultrasonic cavitation in isolation of the stromal vascular fraction from adipose tissue
Syeo Young WEE ; Jeong Do PARK ; Sang Gue KANG ; Eun Soo PARK
Archives of Aesthetic Plastic Surgery 2024;30(1):16-21
Background:
Adipose tissue-derived stem cells (ASCs) represent a rapidly evolving area of cell-based therapies. ASCs are harvested from the stromal vascular fraction (SVF), a heterogeneous mixture of ASCs and other cell types. Two methods are typically employed to obtain the SVF: enzymatic and mechanical. In this study, we examined the efficacy of ultrasonic cavitation in isolating the SVF from adipose tissue.
Methods:
Human adipose tissue was procured from three patients through an aesthetic liposuction procedure. This tissue was then subjected to either an enzymatic method utilizing type II collagenase or an ultrasonic cavitation method using an Ultra Stemcell device. The cell counts and viability were determined using a cell counter. The immunophenotype of the SVF was analyzed using real-time polymerase chain reaction.
Results:
Compared to the enzymatic method, the total cell count and cell viability of the SVF isolated through ultrasonic cavitation were relatively low. However, no significant difference was observed in the immunophenotype of CD45, CD11b, CD34, and CD105.
Conclusions
The ultrasonic cavitation method constitutes a clinically practical approach that offers straightforward access in the operative field. This technique is a rapid and cost-effective method for isolating the SVF.
2.A 30-year neglected foreign body mimicking a maxillary fracture
Wang Seok LEE ; Eun Soo PARK ; Sang Gue KANG ; Min Sung TAK ; Chul Han KIM
Archives of Craniofacial Surgery 2019;20(3):195-198
A-50-year-old male patient presented with complaint of tenderness on the left malar area after traffic accident. Our first impression on him was zygomatic fracture, we did radiologic work-up and physical examination on him. But, on the computed tomography scan, there was no fracture or discontinuity on his facial bone. The computed tomography scan was revealed a 4-cm long foreign body in left maxillary sinus with a large amount of fluid collection. After thorough history taking from him, we reveal the patient had a history of trauma 30 years back on the left zygomatic area with a chopstick. The foreign body was removed via transoral approach with the endoscopic assist. There was no complication after operation.
Accidents, Traffic
;
Facial Bones
;
Foreign Bodies
;
Humans
;
Male
;
Maxilla
;
Maxillary Fractures
;
Maxillary Sinus
;
Physical Examination
;
Tomography, X-Ray Computed
;
Zygomatic Fractures
3.Emergency room visits for severe complications after cosmetic surgery
Wang Seok LEE ; Si Hyun PARK ; Sang Gue KANG ; Min Sung TAK ; Chul Han KIM ; Sang Won LEE
Archives of Aesthetic Plastic Surgery 2019;25(3):108-114
BACKGROUND: Because many cosmetic surgery clinics are not adequately equipped to handle emergent conditions, patients often come to a university hospital when problems occur during or after cosmetic surgery. However, few in-depth studies have been conducted of this issue. Therefore, we investigated emergency department visits due to complications associated with cosmetic surgery. METHODS: A retrospective chart review was conducted of 38 patients who visited the emergency department of the authors' institution due to complications associated with cosmetic surgery from July 2014 to June 2017. RESULTS: There were more women than men (30 women vs. 8 men). Their mean age was 32.4 years (range, 19–57 years). Upon presentation to the emergency department, patients' vital signs and mental status were usually normal (27 normal vs. 11 abnormal). The types of surgery included blepharoplasty, rhinoplasty, malar/orthognathic surgery, mammaplasty, liposuction, fat grafting, and filler and botulinum toxin injections. Most patients required hospitalization (26 admitted vs. 12 discharged). Eight of the hospitalized patients required intensive care unit care, of whom two died and three experienced brain death or had permanent neurologic sequelae. CONCLUSIONS: The complications were usually minor problems, despite the need for hospitalization, but some complications were life-threatening. We recommend close monitoring and maintaining an adequate injection capacity for intravenous sedative anesthesia. When any symptom or sign of a complication occurs, it is best to transfer the patient to a university hospital as soon as possible. Taking a careful medical history is always needed, even for minor procedures.
Anesthesia
;
Blepharoplasty
;
Botulinum Toxins
;
Brain Death
;
Cardiomyopathies
;
Emergencies
;
Emergency Service, Hospital
;
Epinephrine
;
Female
;
Hospitalization
;
Humans
;
Intensive Care Units
;
Lipectomy
;
Male
;
Mammaplasty
;
Retrospective Studies
;
Rhinoplasty
;
Surgery, Plastic
;
Transplants
;
Vital Signs
4.Diagnostic value of peripheral blood immune profiling in colorectal cancer.
Joungbum CHOI ; Hyung Gun MAENG ; Su Jin LEE ; Young Joo KIM ; Da Woon KIM ; Ha Na LEE ; Ji Hyeon NAMGUNG ; Hyun Mee OH ; Tae Joo KIM ; Ji Eun JEONG ; Sang Jean PARK ; Yong Man CHOI ; Yong Won KANG ; Seo Gue YOON ; Jong Kyun LEE
Annals of Surgical Treatment and Research 2018;94(6):312-321
PURPOSE: Little is known about the clinical value of peripheral blood immune profiling. Here, we aimed to identify colorectal cancer (CRC)-related peripheral blood immune cells and develop liquid biopsy-based immune profiling models for CRC diagnosis. METHODS: Peripheral blood from 131 preoperative patients with CRC and 174 healthy controls was analyzed by flow cytometry and automated hematology. CRC-related immune factors were identified by comparing the mean values of immune cell percentages and counts. Subsequently, CRC diagnostic algorithms were constructed using binary logistic regression. RESULTS: Significant differences were observed in percentages and counts of white blood cells, lymphocytes, neutrophils, regulatory T cells, and myeloid-derived suppressor cells (MDSCs) of patients and controls. The neutrophil/lymphocyte and Th1/Th2 ratios were also significantly different. Likewise, the percentages and counts of peripheral blood programed death 1, cytotoxic T lymphocyte antigen 4, B-and T-lymphocyte attenuator, and lymphocyte activation gene-3 were higher in patients with CRC. The binary logistic regression model included 12 variables, age, CD3+%, NK%, CD4+CD279+%, CD4+CD25+%, CD4+CD152+%, CD3+CD366+%, CD3+CD272+%, CD3+CD223+%, CD158b−CD314+CD3−CD56+%, Th2%, and MDSCs cells/µL, for the prediction of cancer. Results of retrospective and prospective evaluation of the area under the curve, sensitivity, and specificity were 0.980 and 0.940, 91.53% and 85.80%, and 93.50% and 86.20%, respectively. CONCLUSION: Peripheral blood immune profiling may be valuable in evaluating the immunity of CRC patients. Our liquid biopsy-based immune diagnostic method and its algorithms may serve as a novel tool for CRC diagnosis. Future largescale studies are needed for better characterization of its diagnostic value and potential for clinical application.
Blood Cells
;
Colorectal Neoplasms*
;
CTLA-4 Antigen
;
Diagnosis
;
Early Detection of Cancer
;
Flow Cytometry
;
Hematology
;
Humans
;
Immunologic Factors
;
Leukocytes
;
Logistic Models
;
Lymphocyte Activation
;
Lymphocytes
;
Methods
;
Neutrophils
;
Prospective Studies
;
Retrospective Studies
;
Sensitivity and Specificity
;
T-Lymphocytes
;
T-Lymphocytes, Regulatory
5.Late Capsular Hematoma after Prosthesis Removal Following Aesthetic Breast Augmentation: A Case Report.
Si Hyun PARK ; Eun Soo PARK ; Sang Gue KANG
Archives of Aesthetic Plastic Surgery 2017;23(2):96-100
Late capsular hematoma formation after augmentation mammoplasty with an implant is a very rare complication. Some mechanisms explaining late capsular hematoma formation have been reported; it is thought to be associated with capsular contracture, textured implants, and the use of corticosteroid and anticoagulant agents. However, no reports of late capsular hematoma formation after prosthesis removal have been published. Herein, we report a case of late capsular hematoma formation after the removal of a prosthesis 10 years previously, following augmentation mammoplasty.
Anticoagulants
;
Breast Implants
;
Breast*
;
Contracture
;
Female
;
Hematoma*
;
Mammaplasty
;
Postoperative Complications
;
Prostheses and Implants*
6.Late Capsular Hematoma after Prosthesis Removal Following Aesthetic Breast Augmentation: A Case Report.
Si Hyun PARK ; Eun Soo PARK ; Sang Gue KANG
Archives of Aesthetic Plastic Surgery 2017;23(2):96-100
Late capsular hematoma formation after augmentation mammoplasty with an implant is a very rare complication. Some mechanisms explaining late capsular hematoma formation have been reported; it is thought to be associated with capsular contracture, textured implants, and the use of corticosteroid and anticoagulant agents. However, no reports of late capsular hematoma formation after prosthesis removal have been published. Herein, we report a case of late capsular hematoma formation after the removal of a prosthesis 10 years previously, following augmentation mammoplasty.
Anticoagulants
;
Breast Implants
;
Breast*
;
Contracture
;
Female
;
Hematoma*
;
Mammaplasty
;
Postoperative Complications
;
Prostheses and Implants*
7.The Clinical Features and Predictive Risk Factors for Reoperation in Patients With Perianal Crohn Diseases; A Multi-Center Study of a Korean Inflammatory Bowel Disease Study Group.
Jae Bum LEE ; Seo Gue YOON ; Kyu Joo PARK ; Kang Young LEE ; Dae Dong KIM ; Sang Nam YOON ; Chang Sik YU
Annals of Coloproctology 2015;31(5):176-181
PURPOSE: Perianal lesions are common in Crohn disease, but their clinical course is unpredictable. Nevertheless, predicting the clinical course after surgery for perianal Crohn disease (PCD) is important because repeated operations may decrease patient's quality of life. The aim of this study was to predict the risk of reoperation in patients with PCD. METHODS: From September 1994 to February 2010, 377 patients with PCD were recruited in twelve major tertiary university-affiliated hospitals and two specialized colorectal hospitals in Korea. Data on the patient's demographics, clinical features, and surgical outcomes were analyzed. RESULTS: Among 377 patients, 227 patients were ultimately included in the study. Among the 227 patients, 64 patients underwent at least one reoperation. The median period of reoperation following the first perianal surgery was 94 months. Overall 3-year, 5-year, and 10-year cumulative rates of reoperation-free individuals were 68.8%, 61.2%, and 50.5%, respectively. In multivariate analysis (Cox-regression hazard model), reoperation was significantly correlated with an age of onset less than 20 years (hazard ratio [HR], 1.93; 95% confidence interval [CI], 1.07-3.48; P = 0.03), history of abdominal surgery (HR, 1.99; 95% CI, 1.08-3.64; P = 0.03), and the type of surgery. Among types of surgery, fistulotomy or fistulectomy was associated with a decreased incidence of reoperation in comparison with incision and drainage (HR, 0.19; 95% CI, 0.09-0.42; P < 0.001). CONCLUSION: Young age of onset and a history of abdominal surgery were associated with a high risk of reoperation for PCD, and the risk of reoperation were relatively low in fistulotomy or fistulectomy procedures.
Age of Onset
;
Crohn Disease
;
Demography
;
Drainage
;
Humans
;
Incidence
;
Inflammatory Bowel Diseases*
;
Korea
;
Multivariate Analysis
;
Quality of Life
;
Recurrence
;
Reoperation*
;
Risk Factors*
8.Tumescent local anesthetic technique for inguinal hernia repairs.
Ju Won CHYUNG ; Dong Gue SHIN ; Yujin KWON ; Dong Hui CHO ; Kyung Bok LEE ; Sang Soo PARK ; Jin YOON ; Yong Seog JANG
Annals of Surgical Treatment and Research 2014;87(6):325-330
PURPOSE: We evaluated the adequacy and feasibility of a tumescent solution containing lidocaine and bupivacaine for inguinal hernia repairs. METHODS: The medical records of 146 consecutive inguinal hernia patients with 157 hernia repairs using the tumescent local anesthesia technique performed by a single surgeon between September 2009 and December 2013 were retrospectively reviewed. RESULTS: The mean operation time (+/-standard deviation) and hospital stay were 64.5 +/- 17.6 minutes and 2.7 +/- 1.5 days. The postoperative complication rate was 17.8%. There were four cases of recurrences (2.5%) at a mean follow-up of 24 +/- 14 months. CONCLUSION: Our results suggest that local anesthesia with the tumescent technique is an effective and safe modality for inguinal hernia repairs.
Anesthesia, Local
;
Bupivacaine
;
Follow-Up Studies
;
Hernia, Inguinal*
;
Herniorrhaphy
;
Humans
;
Length of Stay
;
Lidocaine
;
Medical Records
;
Postoperative Complications
;
Recurrence
;
Retrospective Studies
9.Analysis of Oropharyngeal Microbiota between the Patients with Bronchial Asthma and the Non-Asthmatic Persons.
Hien Thanh DANG ; Song Ah KIM ; Hee Kuk PARK ; Jong Wook SHIN ; Sang Gue PARK ; Wonyong KIM
Journal of Bacteriology and Virology 2013;43(4):270-278
Bronchial asthma can be triggered by microbial agents in the oropharynx. This study was designed to identify the differences in microbiota of oropharynx of bronchial asthmatic patients in contrast to normal controls. In order to resolve the qualitative and quantitative diversity of the 16S rRNA gene present in the oropharynx microbiota of 4 patients and 4 controls, we compared microbial communities using Sanger sequencing and 376 sequences of 16S rRNA gene were analyzed. Of the total microbial diversity detected in the oropharynx in asthmatic patients 45.6% comprised members of the Firmicutes. In contrast, Proteobacteria (44.0%) dominated the oropharyngeal microbiota in the normal control group. Members of the Bacteroidetes, Fusobacteria, Actinobacteria, TM7, Cyanobacteria and unclassified bacteria were present in both groups. In conclusion, the difference in the microbiota of the oropharynx between patients and normal individuals could trigger symptomatic attacks in bronchial asthma.
Actinobacteria
;
Asthma*
;
Bacteria
;
Bacteroidetes
;
Cyanobacteria
;
Fusobacteria
;
Genes, rRNA
;
Humans
;
Metagenome
;
Microbiota*
;
Oropharynx
;
Proteobacteria
10.Missing Data Analysis in Drug-Naive Alzheimer's Disease with Behavioral and Psychological Symptoms.
Yong Tae KWAK ; Youngsoon YANG ; Sang Gue PARK
Yonsei Medical Journal 2013;54(4):825-831
PURPOSE: To clarify the effects of missing values due to behavioral and psychological symptoms in dementia (BPSD) in Alzheimer's disease (AD) patients on the neuropsychological tests, this study describes the pattern of missing values due to BPSD, and its influence on tests. MATERIALS AND METHODS: Drug-naive probable AD patients (n=127) with BPSD and without BPSD (n=32) were assessed with Seoul Neuropsychological Screening Battery including measures of memory, intelligence, and executive functioning. Moreover, patients were rated on Korean Neuropsychiatry Inventory (K-NPI). RESULTS: The more severe the K-NPI score, the less neuropsychological tests were assessable, leading to many missing values. Patients with BPSD were more severely demented than those without BPSD. K-NPI scores were significantly correlated with the number of missing values. The effect of BPSD was largest for tests measuring frontal functions. The replacement of the missing values due to BPSD by the lowest observed score also showed the largest effect on tests of frontal function. CONCLUSION: The global cognitive and behavior scales are related with missing values. Among K-NPI sub-domains, delusion, depressing, apathy, and aberrant motor behavior are significantly correlated for missing values. Data imputation of missing values due to BPSD provides a more differentiated picture of cognitive deficits in AD with BPSD.
Aged
;
Alzheimer Disease/*psychology
;
Behavioral Symptoms
;
Cognition
;
Delusions
;
Dementia/psychology
;
Female
;
Humans
;
Male
;
Neuropsychological Tests
;
Regression Analysis

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