1.Age estimation from tooth dentine using the racemization of amino acids.
Jeong Hwa SONG ; Juck Joon HWANG ; Chong Youl KIM
Korean Journal of Legal Medicine 1993;17(2):20-27
No abstract available.
Amino Acids*
;
Dentin*
;
Tooth*
2.Difference between before and after Compensating for Cyclotorsion by Optical Coherence Tomography Guided Progression Analysis
Jeong Hwa SHIN ; Young Hoon HWANG
Journal of the Korean Ophthalmological Society 2022;63(9):762-768
Purpose:
This study evaluated the difference in parameters before and after the application of optical coherence tomography (OCT) Guided Progression Analysis (GPA) to compensate for cyclotorsion during image acquisition.
Methods:
Among glaucomatous eyes with ≥4 OCT tests, eyes with correction for cyclotorsion in GPA printouts defined as rotated OCT fundus images were included. The degree of cyclotorsion (i.e., the degree of fundus image rotation), direction of cyclotorsion (incyclotorsion or excyclotorsion), difference in optic nerve head (ONH) parameters, and retinal nerve fiber layer (RNFL) thickness before and after correction were analyzed.
Results:
Correction for cyclotorsion was seen in 33 of the 401 eyes (12.2%). Incyclotorsion was observed in 16 eyes (48.5%) and excyclotorsion in 17 (51.5%). The mean degree of cyclotorsion was 5.5 ± 2.3 degrees. The ONH parameters were unchanged after correcting for cyclotorsion. The mean overall, inferior, and superior quadrant RNFL thicknesses were 73.6 ± 14.8, 79.3 ± 26.3, and 90.1 ± 24.7 μm before correction and 73.6 ± 14.9, 79.6 ± 26.6, 89.7 ± 24.8 μm afterwards (p > 0.05). The difference in RNFL thickness after correction ranged from 0 to 6 μm.
Conclusions
The difference in RNFL thickness before and after cyclotorsion correction by GPA was not large. GPA did not correct the ONH parameters induced by cyclotorsion. Regarding this, GPA algorithm improvements may be needed.
3.Two Cases of Familial B-Thalassemia Minor.
Jeomg Hwa HWANG ; Hyeon Jeong LEE ; Jun HUR ; Gae Soon YEON ; Hee Jin KIM ; Tae Jun YUN ; Chan Yung KIM
Journal of the Korean Pediatric Society 1995;38(6):867-871
No abstract available.
4.Effects of Daily Chlorhexidine Bathing on the Acquisition of Multidrug-resistant Organisms and Healthcare-associated Infection in an Intensive Care Unit
Ju Yeon LEE ; Jae Sim JEONG ; Min Young KIM ; Sil Hwa PARK ; Young Hui HWANG
Journal of Korean Biological Nursing Science 2018;20(1):38-46
PURPOSE: The aim of this study was to verify the effects of daily 2% chlorhexidine gluconate (CHG) bathing on the acquisition of multidrug-resistant organisms (MDRO) and healthcare-associated infection (HAI) in a medical intensive care unit (MICU). METHODS: The study was a randomized controlled group posttest only design, involving 91 patients in MICU at a tertiary hospital (47 patients in the experimental group and 44 patients in the control group). The 2% CHG bathing was performed daily according to bathing protocol to the patients in the experimental group, and traditional bath was performed every three days to those in the control group. Fisher's exact test and χ² test were used to analyze the data. RESULTS: MDRO were found in 6 patients of the experimental group and in 15 patients of the control group. The difference was statistically significant (p=.016). HAI occurred in 2 patients of the experimental group and in 7 patients of the control group. The difference was not statistically significant (p=.084). CONCLUSION: The results confirmed that daily bathing with CHG was effective in reducing the incidence of MDRO acquisition. Therefore, it is expected that daily bathing with CHG will be used as an effective nursing intervention to reduce the incidence of MDRO acquisition.
Baths
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Chlorhexidine
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Critical Care
;
Cross Infection
;
Drug Resistance, Microbial
;
Humans
;
Incidence
;
Intensive Care Units
;
Nursing
;
Tertiary Care Centers
5.Progression of Glaucoma in Highly Myopic Eyes with Paravascular Inner Retinal Defects
Nala SHIN ; Jeong Hwa SHIN ; Young Hoon HWANG
Journal of the Korean Ophthalmological Society 2022;63(8):727-734
Purpose:
To report a case of glaucoma progression in highly myopic eyes with paravascular inner retinal defects.Case summary: Retinal nerve fiber layer (RNFL) defects with cleavage-like irregular margins and internal areas were found around the retinal vessels in highly myopic eyes of a 17-year-old female. On suspicion of paravascular inner retinal defect (PIRD) instead of glaucomatous RNFL defect, observation without treatment was recommended. After 10 years of follow-up, RNFL defects and neuroretinal rim thinning were found around the pre-existing PIRD on fundus photographs. Optical coherence tomography also revealed decreased RNFL thickness.
Conclusions
Glaucomatous changes progressed around the pre-existing PIRD area over the 10-year follow-up. This indicates the need for caution when assessing glaucoma in highly myopic eyes with PIRD.
6.Human Cellular Immune Responses to the Aqueous Fraction of the TSP Antigen of Mycobacterium tuberculosis H37Rv.
Tae Hyun PAIK ; Jeong Kyu PARK ; Hwa Jung KIM ; Eun Kyeong JO ; In Taek HWANG ; Jeong hee KHO ; Jae Hyun LIM ; Dul Lei MIN ; Young Ja SONG
Journal of the Korean Society for Microbiology 1998;33(3):281-294
Phase-partitioning with Triton X-114 (TX114) was applied to the TSP antigen, which may be preferentially associated with the cell wall of M. tuberculosis. The hydrophilic protein components of the TSP antigen were successfully separated from integral hydrophobic macromolecules. To further characterize and examine the cellular immune response of the aqueous fraction of the TSP antigen (TSPa), the in vitro properties of the antigen were measured by lymphoproliferation; surface expression of IL-2 Ra on T lymphocytes was analyzed by flow cytometry; and the cytokine mRNA expression pattern was determined by RT-PCR. Significant lymphoproliferative responses to the TSPa antigen were observed in healthy tuberculin reactive donors after a 5 day in vitro stimulation. TSPa treatment of PBMCs from healthy tuberculin positive subjects for 5 days resulted in progressive augmentation of IFN-r, II 2, and IL-2Ra mRNA expression, as measured by RT-PCR, but considerably reduced IL-4 mRNA expression. In addition, the TSPa antigen stimulated more IL-12 p40 mRNA production than did the PPD antigen, and graduaBy suppressed IL- 10 mRNA expression. Moreover, the CD3' T cells of tuberculin positive subjects displayed a profound increase in their expression of the II 2Ru protein (39.0%) in response to the TSPa antigen. Proliferation was correlated with IL-2 and IL-2Ra mRNAs, but not correlated with distinct IFN-r or IL-12 p40 mRNA production. These findings strongly suggest that the TSPa antigen preferentially evokes the generation of a Thl-like immune response in healthy tuberculin reactors.
Cell Wall
;
Flow Cytometry
;
Humans*
;
Immunity, Cellular*
;
Interleukin-12
;
Interleukin-2
;
Interleukin-4
;
Mycobacterium tuberculosis*
;
Mycobacterium*
;
Neptune
;
RNA, Messenger
;
T-Lymphocytes
;
Tissue Donors
;
Tuberculin
;
Tuberculosis
7.Rupture and Spontaneous Sealing of a Coronary Aneurysm After Deployment of Drug-Eluting Stent.
Tae Jung KWON ; Jin Yong HWANG ; Choong Hwan KWAK ; Young Hoon JEONG ; Yong Whi PARK ; Seok Jae HWANG ; Jeong Rang PARK ; Jong Hwa AHN ; Ji Hyun MIN
Korean Circulation Journal 2012;42(8):558-561
Lesions with coronary artery aneurysm (CAA) can become complicated during percutaneous coronary intervention. Here, we report a case of a 78-year-old man who developed a rupture, and spontaneous sealing of the CAA occurred after stent implantation, as shown by computed tomography coronary angiography.
Aged
;
Aneurysm
;
Congenital Abnormalities
;
Coronary Aneurysm
;
Coronary Angiography
;
Coronary Vessels
;
Drug-Eluting Stents
;
Ear
;
Humans
;
Percutaneous Coronary Intervention
;
Rupture
;
Stents
8.Tumor Necrosis Factor alpha up-regulates the Expression of beta2 Adrenergic Receptor via NF-kappaB-dependent Pathway in Osteoblasts.
Kyunghwa BAEK ; Jiho KANG ; Hyo Rin HWANG ; Jeong Hwa BAEK
International Journal of Oral Biology 2013;38(3):121-126
Tumor necrosis factor alpha (TNFalpha) is a multifunctional inflammatory cytokine that regulates various cellular and biological processes. Increased levels of TNFalpha have been implicated in a number of human diseases including diabetes and arthritis. Sympathetic nervous system stimulation via the beta2-adrenergic receptor (beta2AR) in osteoblasts suppresses osteogenic activity. We previously reported that TNFalpha up-regulates beta2AR expression in murine osteoblastic cells and that this modulation is associated with TNFalpha inhibition of osteoblast differentiation. In our present study, we explored whether TNFalpha induces beta2AR expression in human osteoblasts and then identified the downstream signaling pathway. Our results indicated that beta2AR expression was increased in Saos-2 and C2C12 cells by TNFalpha treatment, and that this increase was blocked by the inhibition of NF-kappaB activation. Chromatin immunoprecipitation and luciferase reporter assay results indicated that NF-kappaB directly binds to its cognate elements on the beta2AR promoter and thereby stimulates beta2AR expression. These findings suggest that the activation of TNFalpha signaling in osteoblastic cells leads to an upregulation of beta2AR and also that TNFalpha induces beta2AR expression in an NF-kappaB-dependent manner.
Arthritis
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Biological Processes
;
Chromatin Immunoprecipitation
;
Durapatite
;
Humans
;
Luciferases
;
NF-kappa B
;
Osteoblasts
;
Receptors, Adrenergic
;
Sympathetic Nervous System
;
Tumor Necrosis Factor-alpha
;
Up-Regulation
9.Hypertension and Neuropsychiatric Symptoms in Patients with Drug-Naïve Alzheimer's Disease.
Inha HWANG ; Kyoung Hwa BAEK ; Jeong Ho HAN ; Sang Won HA ; YoungSoon YANG
Dementia and Neurocognitive Disorders 2017;16(3):78-82
BACKGROUND AND PURPOSE: Neuropsychiatric symptoms (NPS) such as anxiety, depression, and delusions affect up to 90% of all patients with Alzheimer's disease (AD). NPS is associated with significant caregiver burden and patient distress. Given the severe burden of NPS in AD, it is critical to know potential modifiable risk factors of NPS in AD. This study explores the association between hypertension and NPS in patients with drug-naïve AD. METHODS: We reviewed medical records of 149 patients with AD with (n=80) and without (n=69) hypertension. NPS were assessed using the Korean version of Neuropsychiatric Inventory (K-NPI). Affective, psychotic, and behavior symptom clusters were assessed separately. RESULTS: The total score of K-NPI was not significantly different between patients with AD with and without hypertension. Among K-NPI domains, scores of depression/dysphoria (p=0.045), anxiety (p=0.022), and apathy/indifference (p=0.037) were significantly higher in patients with AD with hypertension. Systolic blood pressure (BP) was associated with higher total K-NPI and affective symptom cluster scores. Diastolic BP was associated with affective symptom cluster scores. CONCLUSIONS: Results suggest that hypertension increases risk of specific NPS in patients with AD. Among NPS, hypertension was associated with affective symptom cluster.
Affective Symptoms
;
Alzheimer Disease*
;
Anxiety
;
Blood Pressure
;
Caregivers
;
Delusions
;
Depression
;
Humans
;
Hypertension*
;
Medical Records
;
Risk Factors
10.Interleukin-6 and Soluble Interleukin-6 Receptor in Degenerative Arthrits.
Jae Suk CHANG ; Yong Gab JEONG ; Woo Shin CHO ; Seong Il BIN ; Kyu Hwang YM ; Jung Hwa KIM
The Journal of the Korean Rheumatism Association 2000;7(3):250-256
Unlike other soluble receptors, the soluble interleukin-6 receptor (sIL-6R) cooperates with IL-6 to activate gp130 of effector cell. As the IL-6 and sIL-6R are important in the rheumatoid disease, this study was designed to measure concentration of IL-6 and sIL-6R in synovium and synovial fluid of the degenerative arthritis. The synovium and synovial fluid were obtained during total knee replacement arthroplasty. The synovium was taken from eleven patients, and synovial fluid taken from sixteen patients. Same patients between two groups were seven. Tissue cultures of the synovial tissues were done with 10% FBS for 72 hours. After irrigation, thery were incubated for 48 hours without FBS, and the culture media and the synovial fluid were collected after centrifuged at 2500rpm for 10 minutes. The level of IL-6 and sIL-6R were measured by quantitative sandwich enzyme immunoassay technique. RESULTS: In the synovium, the IL-6 level was 5.1+/-0.12ng/ml, and the sIL-6R level was 0.41+/-0.25ng/ml. In the synovial fluid, the IL-6 level was 0.09+/- 0.15ng/ml, and the sIL-6R level was 10.37+/-3.28ng/ml. These results show that IL-6 concentration was measured highly in two groups, especially in synovium (sixty times), and the sIL-6R concentration was measured significantly high in synovial fluid (twenty-five times). CONCLUSION: The IL-6 and sIL-6R were elevated in degenerative arthrits. We confirmed the source of IL-6 was synovium (very high in synovial tissue culture media), but we need further study for the source of sIL-6R as it was remarkably elevated as IL-6 and its level was lower than serum.
Arthroplasty
;
Arthroplasty, Replacement, Knee
;
Culture Media
;
Humans
;
Immunoenzyme Techniques
;
Interleukin-6*
;
Osteoarthritis
;
Synovial Fluid
;
Synovial Membrane