1.The Association Between Neurodegenerative Diseases and Development of Type 2 Diabetes
Sang-Woo KOO ; Hojun LEE ; Yang-Tae KIM ; Hee-Cheol KIM
Korean Journal of Psychosomatic Medicine 2022;30(2):155-164
Objectives:
:A growing body of evidence links type 2 diabetes (T2D) with a neurodegenerative disease (ND) such as Alzheimer’s disease and Parkinson’s disease. The purpose of this study is to investigate the relationship between NDs and the development of T2D by comparing the incidence of T2D in a group of various NDs (ND group) and control group.
Methods:
:A population-based 10-year follow-up study was conducted using the Korean National Health Information Database for 2002-2015. We used a retrospective cohort study design to investigate the association of ND with T2D occurrence. The study population included ND (n=8,814) and control (n=37,970) groups, all aged 60 years or over. The Kaplan-Meier method was used to estimate the risk of developing T2D as a function of time. Cox proportional hazards regression models were used to evaluate the relationship between ND and T2D.
Results:
:T2D was developed in a significantly higher percentage of patients in the ND group (53.6%) than in the control group (44.7%). The ND group increased the risk of T2D (HR, 1.43; 95% CI, 1.38-1.47). About onethird of patients in both groups were additionally diagnosed with another ND before the occurrence of T2D during a 10-year follow-up period. When compared to those who did not have another ND during the follow-up period, the incidence of T2D in those who were additionally diagnosed with another ND was higher in both the ND and control groups.
Conclusions
:The ND group had about 1.4 times higher risk of developing T2D than the control group. Our results showed a positive association between ND and T2D.
2.Rising Incidence of Diabetes in Young Adults in South Korea: A National Cohort Study
Hyun Ho CHOI ; Giwoong CHOI ; Hojun YOON ; Kyoung Hwa HA ; Dae Jung KIM
Diabetes & Metabolism Journal 2022;46(5):803-807
We investigated the incidence of diagnosed diabetes in South Korean adults (aged ≥20 years) by analyzing data for the National Health Insurance Service–National Sample Cohort. From 2006 to 2015, the overall incidence rate of diagnosed diabetes decreased by approximately 0.1% per year until 2015. Although, this trend was observed in individuals aged 40 years or over, the rate increased slightly in the 20–29 and 30–39 years age groups, from 0.5 to 0.7 and 2.0 to 2.6 per 1,000 individuals, respectively. The proportion of obese young adults with diabetes increased remarkably, from 51.4% in 2006 to 72.4% in 2015. Thus, young adults need early identification and weight-control strategies to prevent diabetes.
3.Analysis of Adverse Drug Reactions Identified in Nursing Notes Using Reinforcement Learning
Eunjoo JEON ; Youngsam KIM ; Hojun PARK ; Rae Woong PARK ; Hyopil SHIN ; Hyeoun-Ae PARK
Healthcare Informatics Research 2020;26(2):104-111
Electronic Health Records (EHRs)-based surveillance systems are being actively developed for detecting adverse drug reactions (ADRs), but this is being hindered by the difficulty of extracting data from unstructured records. This study performed the analysis of ADRs from nursing notes for drug safety surveillance using the temporal difference method in reinforcement learning (TD learning). Nursing notes of 8,316 patients (4,158 ADR and 4,158 non-ADR cases) admitted to Ajou University Hospital were used for the ADR classification task. A TD(λ) model was used to estimate state values for indicating the ADR risk. For the TD learning, each nursing phrase was encoded into one of seven states, and the state values estimated during training were employed for the subsequent testing phase. We applied logistic regression to the state values from the TD(λ) model for the classification task. The overall accuracy of TD-based logistic regression of 0.63 was comparable to that of two machine-learning methods (0.64 for a naïve Bayes classifier and 0.63 for a support vector machine), while it outperformed two deep learning-based methods (0.58 for a text convolutional neural network and 0.61 for a long short-term memory neural network). Most importantly, it was found that the TD-based method can estimate state values according to the context of nursing phrases. TD learning is a promising approach because it can exploit contextual, time-dependent aspects of the available data and provide an analysis of the severity of ADRs in a fully incremental manner.
4.Neuromyelitis Optica Masquerading as Lumbosacral Radiculopathy: A Case Report.
Seungyeon KIM ; Bumsun KWON ; Jinwoo PARK ; Hojun LEE ; Hyojun KIM ; Dayun PARK ; Kiyeun NAM
Annals of Rehabilitation Medicine 2016;40(5):943-948
Neuromyelitis optica spectrum disorders (NMOSD) is a demyelinating syndrome of the central nervous system. This case report describes a 31-year-old woman whose electromyography revealed radiculopathy in the left L5-S1 spinal segment without anatomical abnormalities on lumbosacral magnetic resonance imaging (MRI). She was diagnosed with NMOSD based on gadolinium contrast whole spine and brain MRI and anti-aquaporin-4 antibody findings. Her peripheral nervous system might have been damaged during the early course of NMOSD. Therefore, it is necessary to consider NMOSD for patients who have radiculopathy in electromyography if lumbosacral MRI shows no abnormalities.
Adult
;
Brain
;
Central Nervous System
;
Electromyography
;
Female
;
Gadolinium
;
Humans
;
Magnetic Resonance Imaging
;
Neuromyelitis Optica*
;
Peripheral Nervous System
;
Peripheral Nervous System Diseases
;
Radiculopathy*
;
Spine
5.Treatment of Venous Stasis Ulcer with 3M(TM) Coban(TM) 2 Layer Compression System: A Case Report.
Hojun CHU ; Daegu SON ; Junhyung KIM ; Kihwan HAN ; Hyungtae KIM
Journal of the Korean Society of Plastic and Reconstructive Surgeons 2011;38(5):699-702
PURPOSE: Venous stasis ulcer is the most severe form of chronic venous insufficiency and this commonly appears in the lower limb. Pharmacological therapy, reconstruction of the venous system, surgical management, cellular therapy and compression therapy are known as the treatments of venous stasis ulcer, but relapses are common, which make it a typical chronic wound. We report here on a case of recurrent venous stasis ulcer that healed with compression therapy without any other treatment. METHODS: A 35-year-old man with a 13 years history of venous stasis had developed an ulcer on the distal third portion of the lower left limb which was developed 12-year before enrollment in this study. He had been treated with vacuum assist closure, 2 times of cell therapy and 3 times of skin graft for 8 years, but the lesion recurred. From November, 2008 compression therapy was done with the 3M Coban(TM) 2 Layer Compression System(3M, St. Paul, USA). The ulcer at that time was oval shaped and 3x4cm in size. A comfort layer bandage was applied from the proximal phalanx of the great toe to the knee. A compression layer bandage was applied on the previous layer with it being overlapped one half the width of the comfort layer bandage. The dressing was changed every 4 days and the change was recorded with photography. RESULTS: A total of 12 Coban(TM) 2 Layer Compression Systems were used. The size of the ulcer decreased to 2.5x2.5cm in one month, to 2x2cm in 2 months, it was 1x1.8cm in size at 3 months and it completely healed in 4 months. CONCLUSION: The venous stasis ulcer was completely healed using the 3M Coban(TM) 2 Layer Compression System. This method was easy to apply, made the patient comfortable and it provided an excellent compression effect. As in the previous studies, this compression therapy has been proven to play an important role for the treatment and prevention of venous stasis ulcer.
Adult
;
Bandages
;
Extremities
;
Humans
;
Knee
;
Lower Extremity
;
Recurrence
;
Skin
;
Tissue Therapy
;
Toes
;
Transplants
;
Ulcer
;
Vacuum
;
Varicose Ulcer
;
Venous Insufficiency
6.Nodular Gastritis as a Precursor Lesion of Atrophic and Metaplastic Gastritis
Young Jung KIM ; Sun Young LEE ; Hojun YANG ; Jeong Hwan KIM ; In Kyung SUNG ; Hyung Seok PARK
The Korean Journal of Gastroenterology 2019;73(6):332-340
BACKGROUND/AIMS: Chronic atrophic gastritis (CAG) and metaplastic gastritis (MG) are precancerous conditions of Helicobacter pylori (H. pylori)-related gastric cancer. This study aimed to identify the characteristics of nodular gastritis (NG) showing CAG or MG after nodule regression.METHODS: H. pylori-infected patients with NG were included after upper gastrointestinal endoscopy. Patients were excluded if their latest endoscopy had been performed ≤36 months after the initial diagnosis of NG. Small-granular-type NG was defined as the condition with 1–2 mm regular subepithelial nodules. Large-nodular-type NG was defined as those with 3–4 mm, irregular subepithelial nodules. The endoscopic findings after nodule regression were recorded.RESULTS: Among the 97 H. pylori-infected patients with NG, 61 showed nodule regression after a mean follow-up of 73.0±22.0 months. After nodule regression, 16 patients showed a salt-and-pepper appearance and/or transparent submucosal vessels, indicating CAG. Twenty-nine patients showed diffuse irregular elevations and/or whitish plaques, indicating MG. Sixteen patients with other endoscopic findings (14 normal, one erosive gastritis, and one chronic superficial gastritis) showed a higher proportion of H. pylori eradication (12/16, 75.0%) than those in the CAG group (5/16, 31.3%) and MG group (6/29, 20.7%; p=0.001). Patients with small-granular-type NG tended to progress toward CAG (14/27, 51.9%), whereas those with large-nodular-type NG tended to progress toward MG (25/34, 73.5%; p<0.001).CONCLUSIONS: In patients with a persistent H. pylori infection, NG tended to progress to CAG or MG when the nodules regressed. Small-granular-type NG tended to progress to CAG, whereas large-nodular-type NG tended to progress to MG.
Atrophy
;
Diagnosis
;
Endoscopy
;
Endoscopy, Gastrointestinal
;
Follow-Up Studies
;
Gastritis
;
Gastritis, Atrophic
;
Helicobacter pylori
;
Humans
;
Lymphoid Tissue
;
Metaplasia
;
Precancerous Conditions
;
Stomach Neoplasms
7.Evaluation of Microtensile Bond Strength of Sealant Depending on the Duration of Etching and the Use of Bonding Agent
Seoyoun SHIM ; Hojun SONG ; Sunmi YANG ; Jaehwan KIM ; Seonmi KIM ; Namki CHOI
Journal of Korean Academy of Pediatric Dentistry 2018;45(3):299-305
The aim of this study was to evaluate the effect of etching time and bonding agents on bond strength of sealant applied to the occlusal surface of primary molars.Forty non-carious exfoliated human primary molars were included in the study. The teeth were randomly divided into 4 groups for measurement. For group I, no acid etching treatment was used. For group II, III, and IV, acid etching gels were applied on the occlusal surface for 15, 30, and 60 seconds, respectively. Each group was divided into 2 subgroups; one group was treated with bonding agents on the enamel while the other was not. Microtensile bond strength was evaluated using a universal testing machine.There were no statistically significant differences in bond strength with varying duration of etching among groups. The results revealed that the use of bonding agents prior to application of fissure sealant increased the bond strength(p < 0.05).It could be concluded that etching time greater than 15 seconds does not significantly enhance the bond strength, but the use of bonding agents as an intermediate layer between the primary molar and fissure sealant would be beneficial in increasing the bond strength.
Dental Enamel
;
Gels
;
Humans
;
Molar
;
Pit and Fissure Sealants
;
Tooth
8.Nodular Gastritis as a Precursor Lesion of Atrophic and Metaplastic Gastritis
Young Jung KIM ; Sun Young LEE ; Hojun YANG ; Jeong Hwan KIM ; In Kyung SUNG ; Hyung Seok PARK
The Korean Journal of Gastroenterology 2019;73(6):332-340
BACKGROUND/AIMS: Chronic atrophic gastritis (CAG) and metaplastic gastritis (MG) are precancerous conditions of Helicobacter pylori (H. pylori)-related gastric cancer. This study aimed to identify the characteristics of nodular gastritis (NG) showing CAG or MG after nodule regression. METHODS: H. pylori-infected patients with NG were included after upper gastrointestinal endoscopy. Patients were excluded if their latest endoscopy had been performed ≤36 months after the initial diagnosis of NG. Small-granular-type NG was defined as the condition with 1–2 mm regular subepithelial nodules. Large-nodular-type NG was defined as those with 3–4 mm, irregular subepithelial nodules. The endoscopic findings after nodule regression were recorded. RESULTS: Among the 97 H. pylori-infected patients with NG, 61 showed nodule regression after a mean follow-up of 73.0±22.0 months. After nodule regression, 16 patients showed a salt-and-pepper appearance and/or transparent submucosal vessels, indicating CAG. Twenty-nine patients showed diffuse irregular elevations and/or whitish plaques, indicating MG. Sixteen patients with other endoscopic findings (14 normal, one erosive gastritis, and one chronic superficial gastritis) showed a higher proportion of H. pylori eradication (12/16, 75.0%) than those in the CAG group (5/16, 31.3%) and MG group (6/29, 20.7%; p=0.001). Patients with small-granular-type NG tended to progress toward CAG (14/27, 51.9%), whereas those with large-nodular-type NG tended to progress toward MG (25/34, 73.5%; p<0.001). CONCLUSIONS: In patients with a persistent H. pylori infection, NG tended to progress to CAG or MG when the nodules regressed. Small-granular-type NG tended to progress to CAG, whereas large-nodular-type NG tended to progress to MG.
Atrophy
;
Diagnosis
;
Endoscopy
;
Endoscopy, Gastrointestinal
;
Follow-Up Studies
;
Gastritis
;
Gastritis, Atrophic
;
Helicobacter pylori
;
Humans
;
Lymphoid Tissue
;
Metaplasia
;
Precancerous Conditions
;
Stomach Neoplasms
9.Clinical Factors Related to Change of Depression Severity in Major Depressive Disorder Through Index Electroconvulsive Therapy
Jae-Won YANG ; Yang Tae KIM ; Hee Cheol KIM ; Sung-Won JUNG ; Hojun LEE
Journal of the Korean Society of Biological Therapies in Psychiatry 2022;28(3):98-108
Objectives:
:The aim of this study was to investigate the factors associated with changes in depression severity in index electroconvulsive therapy (ECT) for major depressive disorder.
Methods:
:A retrospective analysis was performed on 80 patients with major depressive disorder who received index ECT. The severity of depression was assessed using the Hamilton depression rating scale-17 (HDRS-17). Multiple linear regression analysis and logistic regression analysis were performed to identify the factors associated with the change of depression severity and the predictors of the 50% or greater reduction rate of HDRS-17.
Results
:55 (68.8%) patients were HDRS-17 score change ≥50% group, and 25 (31.2%) patients were HDRS-17 score change <50% group. HDRS-17 score change ≥50% group had a shorter episode duration before ECT (11.91±8.63 vs 17.68±11.15 weeks, p=0.027) and more ECT sessions (8.60±2.91 vs 6.80±3.34 sessions, p=0.017). The higher baseline score of anxiety (B=0.937, β=0.374, p<0.001), depression (B=0.846, β=0,324, p=0.001), and somatic symptom (B=0.995, β=0.210, p=0.031) dimensions was associated with the change of HDRS-17 score from baseline. The longer episode duration until the start of ECT was associated with lower likelihood of HDRS-17 score change ≥50% (Wald χ2 =7.74, OR=1.08, 95% CI: 1.02-1.14, p=0.005). The greater number of ECT sessions predicted the HDRS-17 score change ≥50% (Wald χ2 =7.85, OR=0.75, 95% CI=0.62-0.92, p=0.005) Conclusions:In higher baseline anxiety, depression, and somatic symptoms severity, implementing sufficient sessions of ECT in pharmacological treatment phase of relatively shorter duration of major depressive episode may help reduce HDRS-17 score.
10.Effectiveness and Tolerability of Combination Pharmacotherapy With Stimulant and Non-Stimulant in Children With Attention Deficit Hyperactivity Disorder
Hyung Nam PARK ; Na Yeong KONG ; Hee-Cheol KIM ; Yang Tae KIM ; Sung-Won JUNG ; Hojun LEE
Journal of the Korean Academy of Child and Adolescent Psychiatry 2024;35(1):82-89
Objectives:
This study aimed to investigate the effectiveness and safety of combining psychostimulants and nonstimulants for patients under treatment for attention deficit hyperactivity disorder (ADHD).
Methods:
The study included 96 patients aged 6–12 years who were diagnosed with ADHD, among whom 34 received combination pharmacotherapy, 32 received methylphenidate monotherapy, and 30 received atomoxetine monotherapy. Statistical analysis was conducted to compare treatment and adverse effects among groups and to analyze changes before and after combination pharmacotherapy.The difference between combination pharmacotherapy and monotherapy was investigated. Logistic regression analysis was used to identify the predictors of combination pharmacotherapy.
Results:
No significant differences were observed between the groups in terms of age or pretreatment scores. The most common adverse effect experienced by 32% of patients in the combination pharmacotherapy group was decreased appetite. Clinical global impression-severity score decreased significantly after combination pharmacotherapy. All three groups showed significant clinical global impression-severity score improvements over time, with no significant differences among them. The predictive factors for combination pharmacotherapy included the Child Behavior Checklist total score internalizing subscale.
Conclusion
Combination pharmacotherapy with methylphenidate and atomoxetine is a relatively effective and safe option for patients with ADHD who do not respond to monotherapy.