1.Performance Enhancement with Low Stress and Anxiety Modulated by Cognitive Flexibility.
Doug Hyun HAN ; Hyung Woo PARK ; Baik Seok KEE ; Churl NA ; Do Hyun NA ; Leonard ZAICHKOWSKY
Psychiatry Investigation 2011;8(3):221-226
OBJECTIVE: The purpose of this study was to compare cognitive flexibility abilities, stress, and anxiety between starters and non-starter athletes. METHODS: A total of 30 male professional-soccer and 40 professional-baseball athletes were recruited. Wisconsin Card Sorting Test (WCST) and Trail Making Test A & B (TMT A & B) were administered to assess cognitive flexibility during competition. The Korean version of the STAI form Y (STAI-KY) and Visual analogue scale for anxiety and stress were used to assess the anxiety and stress. RESULTS: The starter group had better cognitive function (fewer perseverative errors and rapid TMTB times) (Z=3.32, p<0.01; Z=2.20, p=0.03, respectively) and lower stress and anxiety (F=4.34, p=0.01; F=6.61, p<0.01, respectively) during competition than the non-starter group. CONCLUSION: The better cognitive performances were negatively correlated with stress and anxiety. Current results suggested that cognitive flexibility would enhance human performance by modulation of the anxiety and stress during competition.
Anxiety
;
Athletes
;
Humans
;
Male
;
Pliability
;
Trail Making Test
;
Wisconsin
2.Cardiac Arrest as the Initial Presentation of Leigh Syndrome Associated with Novel NDUFS1 Mutation
Na Hyun LEE ; Do-Hoon KIM ; Jun Chul BYUN
Keimyung Medical Journal 2023;42(2):114-117
Leigh syndrome is a rare progressive neurodegenerative mitochondrial disorder. Over 75 pathogenic mutations have been identified in both the mitochondrial and nuclear genomes. Leigh syndrome can be diagnosed based on clinical manifestations, physical and biochemical examinations, and brain magnetic resonance imaging results. Patients with Leigh syndrome classically present in early childhood with developmental regression, ataxia, and hypotonia with subsequent respiratory and brainstem dysfunction. However, the clinical course of Leigh syndrome is heterogeneous with significant differences in age of onset, symptom severity and prognosis. Here, we report a case of Leigh syndrome with cardiac arrest as initial presentation, and identified the novel mutation of NDUFS1 gene.
3.Perceptions on Pharmacy Students on Consumers’ Demand for Transparent Dispensing Room in Community Pharmacies
Na Hyun KIM ; So Jeong TAE ; Hyun Jin KIM ; Hyun Soon SOHN
Korean Journal of Clinical Pharmacy 2023;33(2):97-105
Background:
Dispensing of prescription drugs is the most important task for community pharmacists. However, the public’s satisfaction with pharmacist services is not high, and distrust due to dispensing by unqualified person and/or under unsanitary conditions led to demands for transparent dispensing room (TDR) in pharmacies.
Objective:
This study was conducted to investigate how pharmacy students perceive pharmacists’ credibility and professional ethics in conjunction with the TDR issue.
Methods:
A survey using 20-items questionnaire was conducted from July 12 to 20, 2019 in pharmacy students nationwide.
Results:
Among 218 respondents, 84.1% attended pharmacy school located in the metropolitan area, 61.1% were the 3rd or 4th graders, and 81.2% had no practical training in community pharmacy. 56.2% were unaware of the TDR issue, and 66.8% agreed on the public’s demand for TDR. 68.8% disagreed that TDR was the best way to solve the problem of unqualified dispensing, while 51.9% agreed that TDR was the best way in solving unsanitary dispensing problem. Publics’ confidence level of community pharmacists was mean 5.84 (range 1-10). In a question asking how expertise and professional ethics affect pharmacist confidence, 50% said expertise was more important, 31.7% the same, and 18.3% said professional ethics was more important.
Conclusions
To overcome the demand for TDR which began with public distrust in pharmacists, it is necessary to seek measures to increase the credibility of pharmacists, and as part of this, pharmacist ethics should be systematically educated at pharmacy school.
4.Neuroprotective effect of erythropoietin on anesthesia-induced neurotoxicity through the modulation of autophagy in Caenorhabditis elegans
Bon-Wook KOO ; Hyun-Jung SHIN ; Sooyoung JEON ; Jung Hyun BANG ; Sang-Hwan DO ; Hyo-Seok NA
Korean Journal of Anesthesiology 2024;77(3):384-391
Background:
The anti-oxidative, anti-inflammatory, and anti-apoptotic effects of erythropoietin may provide neuroprotective effects. Erythropoietin also modulates autophagy signaling that may play a role in anesthesia-induced neurotoxicity (AIN). Herein, we investigated whether AIN can be attenuated by the neuroprotective effect of erythropoietin in the Caenorhabditis elegans (C. elegans).
Methods:
Synchronized worms were divided into the control, Iso, EPO, and EPO-Iso groups. The chemotaxis index (CI) was evaluated when they reached the young adult stage. The lgg-1::GFP-positive puncta per seam cell were used to determine the autophagic events. The erythropoietin-mediated pathway of autophagy was determined by measuring the genetic expression level of let-363, bec-1, atg-7, atg-5, and lgg-3.
Results:
Increased lgg-1::GFP puncta were observed in the Iso, EPO, and EPO-Iso groups. In the Iso group, only the let-363 level decreased significantly as compared to that in the control group (P = 0.009). bec-1 (P < 0.001), atg-5 (P = 0.012), and lgg-3 (P < 0.001) were expressed significantly more in the EPO-Iso group than in the Iso groups. Repeated isoflurane exposure during development decreased the CI. Erythropoietin could restore the decreased CI by isoflurane significantly in the EPO-Iso group.
Conclusions
Erythropoietin showed neuroprotective effects against AIN and modulated the autophagic pathway in C. elegans. This experimental evidence of erythropoietin-related neuroprotection against AIN may be correlated with the induced autophagic degradation process that was sufficient for handling enhanced autophagy induction in erythropoietin-treated worms.
5.Erosive Effect of Salad Dressing on Flowable Composite Resin Surfaces
Na-Hyun KWON ; Im-Hee JUNG ; Ye-Jin KIM ; Jin-Yeong LEE ; Na-Sun JUNG ; Hyun-Woong JEONG ; Do-Seon LIM
Journal of Dental Hygiene Science 2023;23(1):29-38
Background:
The purpose of this study was to investigate the effect of salad dressings on the flowable composite resin surface and the erosion-inhibitory effect of calcium.
Methods:
The experiment included six groups: oriental dressing, balsamic dressing, lemon-garlic dressing, lemon-garlic dressing supplemented with 3% calcium, mineral water as a negative control group, and orange juice as a positive control group. pH and titratable acidity were measured. The prepared specimens were immersed in the experimental solutions for 1, 3, 5, 15, and 30 minutes. The surface microhardness was measured using the Vickers hardness number before and after the treatment, and the surface of the specimens was observed using a scanning electron microscope (SEM).
Results:
The pH values of the experimental groups in increasing order were as follows: lemon-garlic dressing (2.49±0.03), balsamic dressing (3.12±0.06), lemon-garlic dressing +3% calcium (3.27±0.09), oriental dressing (3.75±0.03), orange juice (3.82±0.02), and mineral water (7.32±0.16). The largest surface hardness reduction value was shown in lemon-garlic dressing (−9.61±1.16), followed by balsamic dressing (−9.17±1.63), oriental dressing (−8.62±1.09), orange juice (−8.19±1.36), lemon-garlic dressing +3% calcium (−6.76±1.23), and mineral water (−1.63±2.47). According to the SEM findings, the experimental and positive control groups showed rough surfaces and micropores, whereas the negative control group showed a smooth surface. Moreover, the lemon-garlic dressing with +3% calcium showed fewer micropores and a smoother surface than the lemon-garlic dressing.
Conclusion
The intake of salad dressings at a low pH could weaken the surface microhardness of the flowable composite resin. However, adding calcium to these salad dressings can reduce the risk of microhardness reduction on the flowable composite resin surface.
6.Analgesia after Cesarean section in preeclampsia parturients receiving magnesium sulfate: a retrospective comparison with non-preeclampsia parturients.
Hyo Seok NA ; Hyun Bin KIM ; Chong Soo KIM ; Sang Hwan DO
Anesthesia and Pain Medicine 2012;7(2):136-141
BACKGROUND: Magnesium sulfate (MgSO4) is the first-line therapy for managing preeclampsia in obstetrics. Its perioperative administration has been proved to be an effective analgesic adjuvant, which we investigated in parturients undergoing Cesarean section (C-sec). METHODS: A retrospective chart review examined 504 parturients who underwent C-secs between June 2006 and August 2010, including normal parturients (group N, n = 401) and those diagnosed with preeclampsia (group P, n = 103). A postoperative numeric rating scale (NRS) was used to assess pain, and the number of rescue analgesic administrations and frequency of transfusions were investigated. Perioperative magnesium concentrations were recorded for patients in group P. RESULTS: Patients in group P had longer operation and anesthesia times, and more postoperative admission days than those in group N. The NRS of pain was significantly lower in group P at postoperative day (POD) 1 (4 vs. 5, P < 0.001), and the frequency of rescue drug administration was lower in group P at POD 1 (36.0% vs. 80.3%, P < 0.001) and POD 2 (9.7% vs. 21.1%, P = 0.005) than in group N. Red blood cell transfusions were given more frequently in group P (21.4% vs. 2%, P < 0.001). Pre- and postoperative serum magnesium concentrations in group P were 2.2 (0.5) and 2.1 (0.6) mmol/L, respectively. CONCLUSIONS: Postoperative pain after C-sec was less severe and intravenous patient-controlled analgesia was more efficacious in the preeclampsia group than in the non-preeclampsia group. These findings likely resulted from peripartum intravenous MgSO4 administration in the preeclampsia group.
Analgesia
;
Analgesia, Patient-Controlled
;
Anesthesia
;
Cesarean Section
;
Erythrocyte Transfusion
;
Female
;
Humans
;
Magnesium
;
Magnesium Sulfate
;
Obstetrics
;
Pain, Postoperative
;
Peripartum Period
;
Pre-Eclampsia
;
Pregnancy
;
Retrospective Studies
7.Uveitis and Rheumatic Diseases in a Community Based Practice - Korean Population.
Na Kyung KIM ; Min Yong PARK ; Jong Hyun LEE ; Do Hyung LEE ; Bo Young YOON
Journal of Rheumatic Diseases 2011;18(4):276-282
OBJECTIVE: We aimed to investigate the frequency of rheumatic diseases within uveitis patients visiting the department of Ophthalmology and evaluated the clinical value of serological testing and ophthalmologic findings in patients with uveitis in a community-based practice in Korean population. METHODS: On a retrospective basis, we reviewed the medical records of patients with uveitis, who had been treated at the Department of Ophthalmology of Inje University Ilsan Paik Hospital between January 2005 and March 2010. All patients with uveitis were reviewed regarding their ocular histories and findings, rheumatologic medical histories and manifestations, and pelvis anteroposterial view of plain radiographies to identify the sacroilitis. In addition, we tested for rheumatoid factor, antinuclear antibody, and HLA-B27. RESULTS: A total of 107 patients with uveitis were included in the study. HLA-B27 associated uveitis was present in 64 patients (59.8%) the number of patients with sacroilitis on plain pelvis radiography was 38 patients (37.8%). Fifty-one patients (47.7%) were diagnosed as having systemic rheumatic diseases. The majority of these patients had anklylosing spondylitis (AS) (70.3%) and Bechet's disease (18.9%). The most common type of uveitis was anterior uveitis (90.7%), followed by panuveitis (3.7%) and posterior uveitis (3.7%). The recurrence rate and number of floating cells were greater in patients with rheumatic diseases than patients without rheumatic diseases. CONCLUSION: The majority of rheumatic disease related with uveitis were AS and Bechet's disease. HLA-B27 and pelvis plain radiography can be useful tools for screening the spondyloarthropathies with uveitis. Recurrent and severe uveitis might represent an accompanying rheumatic disease.
Antibodies, Antinuclear
;
HLA-B27 Antigen
;
Humans
;
Mass Screening
;
Medical Records
;
Ophthalmology
;
Panuveitis
;
Pelvis
;
Recurrence
;
Retrospective Studies
;
Rheumatic Diseases
;
Rheumatoid Factor
;
Sacroiliitis
;
Serologic Tests
;
Spondylarthropathies
;
Spondylitis
;
Uveitis
;
Uveitis, Anterior
;
Uveitis, Posterior
8.A first case of high-flow nasal cannula oxygen therapy in patients with pulmonary tumor thrombotic microangiopathy.
Hyonsoo JOO ; Do hyun NA ; Jaeho SEUNG ; Tong Yoon KIM ; Gi June MIN ; Chin Kook RHEE
The Korean Journal of Internal Medicine 2017;32(3):555-558
No abstract available.
Catheters*
;
Humans
;
Oxygen Inhalation Therapy
;
Oxygen*
;
Thrombotic Microangiopathies*
9.A first case of high-flow nasal cannula oxygen therapy in patients with pulmonary tumor thrombotic microangiopathy.
Hyonsoo JOO ; Do hyun NA ; Jaeho SEUNG ; Tong Yoon KIM ; Gi June MIN ; Chin Kook RHEE
The Korean Journal of Internal Medicine 2017;32(3):555-558
No abstract available.
Catheters*
;
Humans
;
Oxygen Inhalation Therapy
;
Oxygen*
;
Thrombotic Microangiopathies*
10.Effects of magnesium sulfate on the labor duration and neonatal outcome in parturients with preeclampsia.
Eun Hee CHUN ; Sang Hwan DO ; Hyun Jung SHIN ; Hyo Seok NA ; Jung Won HWANG
Anesthesia and Pain Medicine 2014;9(2):128-133
BACKGROUND: Magnesium sulfate (MgSO4) is a drug of choice for women with preeclampsia, with evidence that it reduces progression to eclampsia and maternal mortality. However, no previous studies have been conducted on the effect of magnesium sulfate on labor. This retrospective study investigated the effect of magnesium sulfate on the labor duration and the neonatal outcomes in parturients with preeclampsia. METHODS: We reviewed the medical records of 209 women who delivered vaginally with the diagnosis of preeclampsia from January 1, 2003 to June 30, 2013. They were divided into two groups, primipara (Primi group) and multipara (Multi group). Then, each group was subclassified as MgSO4-treated (Mg group) and MgSO4-untreated group (Cont group) again. Collected data included the duration of each stage of labor and neonatal outcomes. RESULTS: The duration of the 1st stage of labor was significantly longer in the Multi-Mg group, compared with the Multi-Cont group (138 +/- 149 min vs. 88 +/- 92 min, P = 0.025). However, the total labor durations were comparable between the two groups. Primi group had no difference in durations of any stage of labor and the total duration. Neonates showed worse outcomes (lower birth weight, lower Apgar, higher NICU admission rate) in the Primi-Mg group than the Primi-Cont group. CONCLUSIONS: Although preeclamptic multiparous parturients treated with MgSO4 showed longer 1st stage of labor than those untreated with MgSO4, the total labor durations were comparable between the groups.
Diagnosis
;
Eclampsia
;
Female
;
Humans
;
Infant, Low Birth Weight
;
Infant, Newborn
;
Magnesium Sulfate*
;
Maternal Mortality
;
Medical Records
;
Pre-Eclampsia*
;
Pregnancy
;
Retrospective Studies