1.Association Between Slow Ventricular Response and Severe Stroke in Atrial Fibrillation-Related Cardioembolic Stroke
Sang Hee HA ; Soo JEONG ; Jae Young PARK ; So Young YANG ; Myung-Jin CHA ; Min-soo CHO ; Jun Young CHANG ; Dong-Wha KANG ; Sun U. KWON ; Bum Joon KIM
Journal of Stroke 2023;25(3):421-424
2.Effects of Appointing a Full-Time Neurointensivist to Run a Closed-Type Neurological Intensive Care Unit
Myung Ah KO ; Jung Hwa LEE ; Joong Goo KIM ; Suyeon JEONG ; Dong Wha KANG ; Chae Man LIM ; Sang Ahm LEE ; Kwang Kuk KIM ; Sang Beom JEON
Journal of Clinical Neurology 2019;15(3):360-368
BACKGROUND AND PURPOSE: To investigate whether appointing a full-time neurointensivist to manage a closed-type neurological intensive care unit (NRICU) improves the quality of critical care and patient outcomes. METHODS: This study included patients admitted to the NRICU at a university hospital in Seoul, Korea. Two time periods were defined according to the presence of a neurointensivist in the preexisting open-type NRICU: the before and after periods. Hospital medical records were queried and compared between these two time periods, as were the biannual satisfaction survey results for the families of patients. RESULTS: Of the 15,210 patients in the neurology department, 2,199 were admitted to the NRICU (n=995 and 1,204 during the before and after periods, respectively; p<0.001). The length of stay was shorter during the after than during the before period in both the NRICU (3 vs. 4 days; p<0.001) and the hospital overall (12.5 vs. 14.0 days; p<0.001). Neurological consultations (2,070 vs. 3,097; p<0.001) and intrahospital transfers from general intensive care units to the NRICU (21 vs. 40; p=0.111) increased from the before to after the period. The mean satisfaction scores of the families of the patients also increased, from 78.3 to 89.7. In a Cox proportional hazards model, appointing a neurointensivist did not result in a statistically significant change in 6-month mortality (hazard ratio, 0.82; 95% confidence interval, 0.652–1.031; p=0.089). CONCLUSIONS: Appointing a full-time neurointensivist to manage a closed-type NRICU had beneficial effects on quality indicators and patient outcomes.
Critical Care Outcomes
;
Critical Care
;
Humans
;
Intensive Care Units
;
Korea
;
Length of Stay
;
Medical Records
;
Mortality
;
Neurology
;
Proportional Hazards Models
;
Referral and Consultation
;
Seoul
3.Acute Exacerbation of Neovascular Glaucoma after Carotid Artery Stenting
Myung Ah KO ; Chae Won LEE ; Sungyang JO ; Dong Wha KANG ; Sang Beom JEON
Journal of the Korean Neurological Association 2018;36(4):325-328
Neovascular glaucoma is a subtype of secondary glaucoma that is characterized by proliferation of fibrovascular tissue in the anterior chamber angle. This condition may be acutely aggravated by carotid revascularization therapies. There have been few previous reports of acute aggravation of neovascular glaucoma following carotid artery stenting. We report the case history of a patient who had acute exacerbation of neovascular glaucoma following carotid artery stenting and required surgical management.
Anterior Chamber
;
Carotid Arteries
;
Carotid Stenosis
;
Glaucoma
;
Glaucoma, Neovascular
;
Humans
;
Stents
4.Corn silk extract improves benign prostatic hyperplasia in experimental rat model.
So Ra KIM ; Ae Wha HA ; Hyun Ji CHOI ; Sun Lim KIM ; Hyeon Jung KANG ; Myung Hwan KIM ; Woo Kyoung KIM
Nutrition Research and Practice 2017;11(5):373-380
BACKGROUND/OBJECTIVES: This study was conducted to investigate the effect of a corn silk extract on improving benign prostatic hyperplasia (BPH). MATERIALS/METHODS: The experimental animals, 6-week-old male Wistar rats, were divided into sham-operated control (Sham) and experimental groups. The experimental group, which underwent orchiectomy and received subcutaneous injection of 10 mg/kg of testosterone propionate to induce BPH, was divided into a Testo Only group that received only testosterone, a Testo+Fina group that received testosterone and 5 mg/kg finasteride, a Testo+CSE10 group that received testosterone and 10 mg/kg of corn silk extract, and a Testo+CSE100 group that received testosterone and 100 mg/kg of corn silk extract. Prostate weight and concentrations of dihydrotestosterone (DHT), 5α-reductase 2 (5α-R2), and prostate specific antigen (PSA) in serum or prostate tissue were determined. The mRNA expressions of 5α-R2 and proliferating cell nuclear antigen (PCNA) in prostate tissue were also measured. RESULTS: Compared to the Sham group, prostate weight was significantly higher in the Testo Only group and decreased significantly in the Testo+Fina, Testo+CSE10, and Testo+CSE100 groups (P < 0.05), results that were consistent with those for serum DHT concentrations. The concentrations of 5α-R2 in serum and prostate as well as the mRNA expression of 5α-R2 in prostate were significantly lower in the Testo+Fina, Testo+CSE10, and Testo+CSE100 groups than that in the Testo Only group (P < 0.05). Similarly, the concentrations of PSA in serum and prostate were significantly lower in the Testo+Fina, Testo+CSE10, and Testo+CSE100 groups (P < 0.05) than in the Testo Only group. The mRNA expression of PCNA in prostate dose-independently decreased in the Testo+CSE-treated groups (P < 0.05). CONCLUSIONS: BPH was induced through injection of testosterone, and corn silk extract treatment improved BPH symptoms by inhibiting the mRNA expression of 5α-R2 and decreasing the amount of 5α-R2, DHT, and PSA in serum and prostate tissue.
Animals
;
Dihydrotestosterone
;
Finasteride
;
Humans
;
Injections, Subcutaneous
;
Male
;
Models, Animal*
;
Orchiectomy
;
Proliferating Cell Nuclear Antigen
;
Prostate
;
Prostate-Specific Antigen
;
Prostatic Hyperplasia*
;
Rats*
;
Rats, Wistar
;
RNA, Messenger
;
Silk*
;
Testosterone
;
Testosterone Propionate
;
Zea mays*
5.Corn silk extract improves cholesterol metabolism in C57BL/6J mouse fed high-fat diets.
Jae Hoon CHA ; Sun Rim KIM ; Hyun Joong KANG ; Myung Hwan KIM ; Ae Wha HA ; Woo Kyoung KIM
Nutrition Research and Practice 2016;10(5):501-506
BACKGROUND/OBJECTIVES: Corn silk (CS) extract contains large amounts of maysin, which is a major flavonoid in CS. However, studies regarding the effect of CS extract on cholesterol metabolism is limited. Therefore, the purpose of this study was to determine the effect of CS extract on cholesterol metabolism in C57BL/6J mouse fed high-fat diets. MATERIALS/METHODS: Normal-fat group fed 7% fat diet, high-fat (HF) group fed 25% fat diet, and high-fat with corn silk (HFCS) group were orally administered CS extract (100 mg/kg body weight) daily. Serum and hepatic levels of total lipids, triglycerides, and total cholesterol as well as serum free fatty acid, glucose, and insulin levels were determined. The mRNA expression levels of acyl-CoA: cholesterol acyltransferase (ACAT), cholesterol 7-alpha hydroxylase (CYP7A1), farnesoid X receptor (FXR), lecithin cholesterol acyltransferase (LCAT), low-density lipoprotein receptor, 3-hyroxy-3-methylglutaryl-coenzyme A reductase (HMG-CoA reductase), adiponectin, leptin, and tumor necrosis factor α were determined. RESULTS: Oral administration of CS extract with HF improved serum glucose and insulin levels as well as attenuated HF-induced fatty liver. CS extracts significantly elevated mRNA expression levels of adipocytokines and reduced mRNA expression levels of HMG-CoA reductase, ACAT, and FXR. The mRNA expression levels of CYP7A1 and LCAT between the HF group and HFCS group were not statistically different. CONCLUSIONS: CS extract supplementation with a high-fat diet improves levels of adipocytokine secretion and glucose homeostasis. CS extract is also effective in decreasing the regulatory pool of hepatic cholesterol, in line with decreased blood and hepatic levels of cholesterol though modulation of mRNA expression levels of HMG-CoA reductase, ACAT, and FXR.
Adipokines
;
Adiponectin
;
Administration, Oral
;
Animals
;
Blood Glucose
;
Cholesterol*
;
Diet
;
Diet, High-Fat*
;
Fatty Liver
;
Glucose
;
Homeostasis
;
Insulin
;
Leptin
;
Metabolism*
;
Mice*
;
Oxidoreductases
;
Phosphatidylcholine-Sterol O-Acyltransferase
;
Receptors, Lipoprotein
;
RNA, Messenger
;
Silk*
;
Sterol O-Acyltransferase
;
Triglycerides
;
Tumor Necrosis Factor-alpha
;
Zea mays*
6.High maysin corn silk extract reduces body weight and fat deposition in C57BL/6J mice fed high-fat diets.
Eun Young LEE ; Sun Lim KIM ; Hyeon Jung KANG ; Myung Hwan KIM ; Ae Wha HA ; Woo Kyoung KIM
Nutrition Research and Practice 2016;10(6):575-582
BACKGROUNG/OBJECTIVES: The study was performed to investigate the effects and mechanisms of action of high maysin corn silk extract on body weight and fat deposition in experimental animals. MATERIALS/METHODS: A total of 30 male C57BL/6J mice, 4-weeks-old, were purchased and divided into three groups by weight using a randomized block design. The normal-fat (NF) group received 7% fat (diet weight basis), the high-fat (HF) group received 25% fat and 0.5% cholesterol, and the high-fat corn silk (HFCS) group received high-fat diet and high maysin corn silk extract at 100 mg/kg body weight through daily oral administration. Body weight and body fat were measured, and mRNA expression levels of proteins involved in adipocyte differentiation, fat accumulation, fat synthesis, lipolysis, and fat oxidation in adipose tissue and the liver were measured. RESULTS: After experimental diet intake for 8 weeks, body weight was significantly lower in the HFCS group compared to the HF group (P < 0.05), and kidney fat and epididymal fat pad weights were significantly lower in the HFCS group compared to the HF group (P < 0.05). In the HFCS group, CCAAT/enhancer binding protein-β, peroxisome proliferator-activated receptor-γ1 (PPAR-γ1), and PPAR-γ2 mRNA expression levels were significantly reduced (P < 0.05) in the epididymal fat pad, whereas cluster of differentiation 36, lipoprotein lipase, acetyl-CoA carboxylase-1, sterol regulatory element binding protein-1c, pyruvate dehydrogenase kinase, isozyme-4, glucose-6-phosphate dehydrogenase, and stearoyl-CoA desaturase-1 mRNA expression levels were significantly decreased in liver and adipose tissues (P < 0.05). In the HFCS group, mRNA expression levels of AMP-activated protein kinase, hormone-sensitive lipase, and carnitine palmitoyltransferase-1 were elevated (P < 0.05). CONCLUSIONS: It can be concluded that high maysin corn silk extract inhibits expression of genes involved in adipocyte differentiation, fat accumulation, and fat synthesis as well as promotes expression of genes involved in lipolysis and fat oxidation, further inhibiting body fat accumulation and body weight elevation in experimental animals.
Acetyl Coenzyme A
;
Adipocytes
;
Adipose Tissue
;
Administration, Oral
;
AMP-Activated Protein Kinases
;
Animals
;
Body Weight*
;
Carnitine
;
Cholesterol
;
Diet
;
Diet, High-Fat*
;
Glucosephosphate Dehydrogenase
;
Humans
;
Kidney
;
Lipolysis
;
Lipoprotein Lipase
;
Liver
;
Male
;
Mice*
;
Oxidoreductases
;
Peroxisomes
;
Phosphotransferases
;
Pyruvic Acid
;
RNA, Messenger
;
Silk*
;
Sterol Esterase
;
Weights and Measures
;
Zea mays*
7.General anesthesia for a patient with multiple system atrophy.
Myung Soo JANG ; Jin Hee HAN ; Sung Wook PARK ; Jong Man KANG ; Wha Ja KANG
Korean Journal of Anesthesiology 2014;67(Suppl):S34-S35
No abstract available.
Anesthesia, General*
;
Humans
;
Multiple System Atrophy*
8.General anesthesia for a patient with multiple system atrophy.
Myung Soo JANG ; Jin Hee HAN ; Sung Wook PARK ; Jong Man KANG ; Wha Ja KANG
Korean Journal of Anesthesiology 2014;67(Suppl):S34-S35
No abstract available.
Anesthesia, General*
;
Humans
;
Multiple System Atrophy*
9.Clinical Outcomes in Patients with Intermediate Coronary Stenoses: MINIATURE Investigators (Korea MultIceNter TrIal on Long-Term Clinical Outcome According to the Plaque Burden and Treatment Strategy in Lesions with MinimUm Lumen ARea lEss Than 4 mm2 Usin.
Young Joon HONG ; Yun Ha CHOI ; Soo Young PARK ; Chang Wook NAM ; Jang Hyun CHO ; Won Yu KANG ; Sang Rok LEE ; Sung Yun LEE ; Sang Wook KIM ; Sang Yeob LIM ; Kyung Ho YUN ; Jung Sun KIM ; Jin Won KIM ; Woong Chol KANG ; Ki Seok KIM ; Jin Ho CHOI ; Joong Wha CHUNG ; Soo Joong KIM ; Youngkeun AHN ; Myung Ho JEONG
Korean Circulation Journal 2014;44(3):148-155
BACKGROUND AND OBJECTIVES: We evaluated the two-year clinical outcomes in patients with angiographically intermediate lesions according to the plaque burden and treatment strategy. SUBJECTS AND METHODS: We prospectively enrolled patients with angiographically intermediate lesions (diameter stenosis 30-70%) with an intravascular ultrasound (IVUS) minimum lumen area (MLA) <4 mm2 with 50-70% plaque burden of 16 Korean percutaneous coronary intervention centers. Patients were divided into medical therapy group (n=85) and zotarolimus-eluting stent group (ZES; Resolute) group (n=74). We evaluated the incidences of two-year major adverse cardiovascular events (MACE). RESULTS: A two-year clinical follow-up was completed in 143 patients and MACE occurred in 12 patients. There were no significant differences in the incidences of death (1.3% vs. 3.0%, p=0.471), target vessel-related non-fatal myocardial infarction (0.0% vs. 0.0%, p=1.000) and target vessel revascularizations (7.8% vs. 4.5%, p=0.425) between medical and ZES groups. Independent predictors of two-year MACE included acute myocardial infarction {odds ratio (OR)=2.87; 95% confidence interval (CI) 1.43-6.12, p=0.014}, diabetes mellitus (OR=2.46; 95% CI 1.24-5.56, p=0.028) and non-statin therapy (OR=2.32; 95% CI 1.18-5.24, p=0.034). CONCLUSION: Medical therapy shows comparable results with ZES, and myocardial infarction, diabetes mellitus and non-statin therapy were associated with the occurrence of two-year MACE in patients with intermediate lesion with IVUS MLA <4 mm2 with 50-70% of plaque burden.
Constriction, Pathologic
;
Coronary Artery Disease
;
Coronary Stenosis*
;
Diabetes Mellitus
;
Follow-Up Studies
;
Humans
;
Incidence
;
Myocardial Infarction
;
Percutaneous Coronary Intervention
;
Plaque, Atherosclerotic
;
Prospective Studies
;
Research Personnel*
;
Stents
;
Ultrasonography
;
Ultrasonography, Interventional
10.Peanut sprout ethanol extract inhibits the adipocyte proliferation, differentiation, and matrix metalloproteinases activities in mouse fibroblast 3T3-L1 preadipocytes.
Woo Kyoung KIM ; Nam E KANG ; Myung Hwan KIM ; Ae Wha HA
Nutrition Research and Practice 2013;7(3):160-165
3T3-L1 preadipocyte were differentiated to adipocytes, and then treated with 0, 10, 20, and 40 microg/mL of peanut sprout ethanol extract (PSEE). The main component of PSEE is resveratrol which contained 5.55 mg/mL of resveratrol. The MTT assay, Oil-Red O staining, glycerol-3-phosphate dehydrogenase (GPDH) activity, and the triglyceride concentration were determined in 3T3-L1 cells. MMP-2 and MMP-9 activities as well as mRNA expressions of C/EBP beta and C/EBP alpha were also investigated. As the concentration of PSEE in adipocytes increased, the cell proliferation was decreased in a dose-dependent manner from 4 days of incubation (P < 0.05). The GDPH activity (P < 0.05) and the triglyceride concentration (P < 0.05) were decreased as the PSEE treatment concentration increased. The mRNA expression of C/EBPbeta in 3T3-L1 cells was significantly low in groups of PSEE-treated, compared with control group (P < 0.05). The MMP-9 (P < 0.05) and MMP-2 (P < 0.05) activities were decreased in a dose-dependent manner as the PSEE concentration increased from 20 microg/mL. In conclusion, it was found that PSEE has an effect on restricting proliferation and differentiation of adipocytes.
3T3-L1 Cells
;
Adipocytes
;
Animals
;
Cell Proliferation
;
Ethanol
;
Fibroblasts
;
Glycerolphosphate Dehydrogenase
;
Matrix Metalloproteinases
;
Mice
;
RNA, Messenger
;
Stilbenes

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