1.Initial Clinical Experience of Pure Single-Incision Robotic Right Hemicolectomy with da Vinci SP Platform
Gyoung Tae NOH ; Myunghyun HAN ; Soon Sup CHUNG ; Ryung Ah LEE ; Kwang Ho KIM
Journal of Minimally Invasive Surgery 2019;22(4):181-183
The da Vinci SP Surgical System (dVSP; Intuitive Surgical, Sunnyvale, CA, USA) was introduced to perform pure single-incision surgery in 2018. This new surgical platform demonstrated favorable performance compared with the positive aspect of single-incision laparoscopic surgery and robot surgery. To date, its use has mainly been in urological and gynecological procedures. We report a case of successful robotic single-incision right hemicolectomy for cecal cancer with the dVSP.
Cecal Neoplasms
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Laparoscopy
2.Generation of Induced Pluripotent Stem Cells from Lymphoblastoid Cell Lines by Electroporation of Episomal Vectors
Myunghyun KIM ; Junmyeong PARK ; Sujin KIM ; Dong Wook HAN ; Borami SHIN ; Hans Robert SCHÖLER ; Johnny KIM ; Kee-Pyo KIM
International Journal of Stem Cells 2023;16(1):36-43
Background and Objectives:
Lymphoblastoid cell lines (LCLs) deposited from disease-affected individuals could be a valuable donor cell source for generating disease-specific induced pluripotent stem cells (iPSCs). However, generation of iPSCs from the LCLs is still challenging, as yet no effective gene delivery strategy has been developed.
Methods:
and Results: Here, we reveal an effective gene delivery method specifically for LCLs. We found that LCLs appear to be refractory toward retroviral and lentiviral transduction. Consequently, lentiviral and retroviral transduction of OCT4, SOX2, KFL4 and c-MYC into LCLs does not elicit iPSC colony formation. Interestingly, however we found that transfection of oriP/EBNA-1-based episomal vectors by electroporation is an efficient gene delivery system into LCLs, enabling iPSC generation from LCLs. These iPSCs expressed pluripotency makers (OCT4, NANOG, SSEA4, SALL4) and could form embryoid bodies.
Conclusions
Our data show that electroporation is an effective gene delivery method with which LCLs can be efficiently reprogrammed into iPSCs.
3.Adolescent Build Plotting on Body Composition Chart and the Type of Diabetes Mellitus.
Hye Won PARK ; Yong Hyuk KIM ; Myunghyun CHO ; Byung Ok KWAK ; Kyo Sun KIM ; Sochung CHUNG
Journal of Korean Medical Science 2012;27(11):1385-1390
Although the prevalence of type 2 diabetes is increasing, there are cases difficult to categorize into certain type in pediatric diabetic patients. The aims of this study were to detect and choose a proper treatment modality for atypical cases of diabetes mellitus, using the body composition chart. We conducted a retrospective study from August 2005 to 2012 with patients who visited Konkuk University Medical Center, and were diagnosed with diabetes mellitus. The medical records were reviewed for the anthropometric data and indices of body composition. The subjects were grouped by the type of diabetes and gender. We constructed a body composition chart plotting fat free mass index and fat mass index (FMI). Body mass index and all body composition indices were higher in type 2 diabetes, in each gender in analysis with Mann-Whitney test. Significant determinant of diabetes type was revealed as FMI and contributing factors on FMI were analyzed with regression analysis. Six atypical cases were identified by a body composition chart including non-obese type 2 diabetes showing suboptimal growth with lower BMI related to relatively lower insulin secretion and type 1 diabetes with insulin resistance resulted from obesity. Body composition chart analysis might be useful in characterization of diabetes type and detection of atypical cases and early adjustment of diabetes management strategy.
Adiposity
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Adolescent
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Body Composition/*physiology
;
Body Mass Index
;
Child
;
Diabetes Mellitus, Type 2/*diagnosis/epidemiology/etiology
;
Female
;
Humans
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Male
;
Obesity/complications
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Regression Analysis
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Retrospective Studies
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Statistics, Nonparametric
4.Adolescent Build Plotting on Body Composition Chart and the Type of Diabetes Mellitus.
Hye Won PARK ; Yong Hyuk KIM ; Myunghyun CHO ; Byung Ok KWAK ; Kyo Sun KIM ; Sochung CHUNG
Journal of Korean Medical Science 2012;27(11):1385-1390
Although the prevalence of type 2 diabetes is increasing, there are cases difficult to categorize into certain type in pediatric diabetic patients. The aims of this study were to detect and choose a proper treatment modality for atypical cases of diabetes mellitus, using the body composition chart. We conducted a retrospective study from August 2005 to 2012 with patients who visited Konkuk University Medical Center, and were diagnosed with diabetes mellitus. The medical records were reviewed for the anthropometric data and indices of body composition. The subjects were grouped by the type of diabetes and gender. We constructed a body composition chart plotting fat free mass index and fat mass index (FMI). Body mass index and all body composition indices were higher in type 2 diabetes, in each gender in analysis with Mann-Whitney test. Significant determinant of diabetes type was revealed as FMI and contributing factors on FMI were analyzed with regression analysis. Six atypical cases were identified by a body composition chart including non-obese type 2 diabetes showing suboptimal growth with lower BMI related to relatively lower insulin secretion and type 1 diabetes with insulin resistance resulted from obesity. Body composition chart analysis might be useful in characterization of diabetes type and detection of atypical cases and early adjustment of diabetes management strategy.
Adiposity
;
Adolescent
;
Body Composition/*physiology
;
Body Mass Index
;
Child
;
Diabetes Mellitus, Type 2/*diagnosis/epidemiology/etiology
;
Female
;
Humans
;
Male
;
Obesity/complications
;
Regression Analysis
;
Retrospective Studies
;
Statistics, Nonparametric
5.Potential role of HMG CoA reductase inhibitor on oxidative stress induced by advanced glycation endproducts in vascular smooth muscle cells of diabetic vasculopathy.
Se Jung YOON ; Young Won YOON ; Byoung Kwon LEE ; Hyuck Moon KWON ; Ki Chul HWANG ; Myunghyun KIM ; Woochul CHANG ; Bum Kee HONG ; Young Ho LEE ; Soon Jung PARK ; Pil Ki MIN ; Se Joong RIM
Experimental & Molecular Medicine 2009;41(11):802-811
Advanced glycation endproducts (AGEs)-induced vascular smooth muscle cell (VSMCs) proliferation and formation of reactive oxygen species (ROS) are emerging as one of the important mechanisms of diabetic vasculopathy but little is known about the antioxidative action of HMG CoA reductase inhibitor (statin) on AGEs. We hypothesized that statin might reduce AGEs-induced intracellular ROS of VSMCs and analyzed the possible mechanism of action of statin in AGEs-induced cellular signaling. Aortic smooth muscle cell of Sprague-Dawley rat (RASMC) culture was done using the different levels of AGEs stimulation in the presence or absence of statin. The proliferation of RASMC, ROS formation and cellular signaling was evaluated and neointimal formation after balloon injury in diabetic rats was analyzed. Increasing concentration of AGEs stimulation was associated with increased RASMC proliferation and increased ROS formation and they were decreased with statin in a dose-dependent manner. Increased NF-kappaB p65, phosphorylated ERK, phosphorylated p38 MAPK, cyclooxygenase-2, and c-jun by AGEs stimulation were noted and their expression was inhibited by statin. Neointimal formation after balloon injury was much thicker in diabetic rats than the sham-treated group but less neointimal growth was observed in those treated with statin after balloon injury. Increased ROS formation, subsequent activation of MAPK system and increased VSMC proliferation may be possible mechanisms of diabetic vasculopathy induced by AGEs and statin may play a key role in the treatment of AGEs-induced diabetic atherosclerosis.
Animals
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Aorta/metabolism/pathology
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Cell Proliferation/drug effects
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Cyclooxygenase 2/metabolism
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Diabetes Mellitus, Experimental/drug therapy/metabolism/pathology
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Diabetic Angiopathies/*drug therapy/*metabolism/pathology
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Glycosylation End Products, Advanced/*metabolism
;
Hydroxymethylglutaryl-CoA Reductase Inhibitors/*pharmacology/therapeutic use
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Male
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Myocytes, Smooth Muscle/*metabolism/pathology
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Oxidative Stress/*drug effects
;
Proto-Oncogene Proteins c-jun/metabolism
;
Rats
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Rats, Sprague-Dawley
;
Reactive Oxygen Species/metabolism
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Signal Transduction/drug effects
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Simvastatin/*pharmacology/therapeutic use
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Transcription Factor RelA/metabolism
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p38 Mitogen-Activated Protein Kinases/metabolism