• Genomics & Informatics
• /
• v.9 no.2
• /
• pp.52-58
• /
• 2011

Osteoporotic fracture (OF), along with bone mineral density (BMD), is an important diagnostic parameter and a clinical predictive risk factor in the assessment of osteoporosis in the elderly population. However, a genome-wide association study (GWAS) on OF has not yet been clarified sufficiently. To identify OF-associated genetic variants and candidate genes, we conducted a GWAS in a population-based cohort (Korean Association Resource [KARE], n=1,427 [case: 288 and control: 1139]) and performed a de novo replication study in hospital-based individuals (Asan and Catholic Medical Center [ACMC], n=1,082 [case: 272 and control: 810]). In a combined meta-analysis, a newly identified genetic locus in an intergenic region at 10p11.2 (near genes FZD8 and ANKRD30A ) showed the most significant association (odd ratio [OR] = 2.00, 95% confidence interval [CI] = 1.47~2.74, p=$1.27{\times}10^{-6}$) in the same direction. We provide the first evidence for a common genetic variant influencing OF and genetic information for further investigation in bone metabolism.

• Journal of Electrical Engineering and Technology
• /
• v.10 no.5
• /
• pp.2155-2161
• /
• 2015

This study suggests an optical method to measure cardinal of gait (step width, step length, and stride length) with position sensitive detector (PSD). The effect of reflector’s shape (flat and cylinder) on the PSD output voltage was examined for the application of the suggested system to real situations with a curved shape reflector (e.g. shoes). Various mathematical models were evaluated to find the optimal equation for the distance measurement. Considering the effect of shape on detected signal, the inverse polynomial model was developed. The suggested method is simple to operate, low in cost, small in size, and can evaluate gait parameters in real time. This method is expected to be useful in the field of rehabilitation and sport science

• The Transactions of The Korean Institute of Electrical Engineers
• /
• v.64 no.4
• /
• pp.605-611
• /
• 2015

The measurement and analysis of angular change have been studied in many fields. This study developed an angle measurement technique with optical fiber and photodiode. The position and attached angle of photodiode were investigated to find the proper combination of parameter. The results showed that the increased measuring range was achieved when the position of detector was away from the center of rotation. Inverse mathematical model was used to obtain angular changes with an optical fiber. The applications of this study include in optical sensor, joint angle measurement, and sport science.

• Proceedings of the Zoological Society Korea Conference
• /
• 2000.10a
• /
• pp.244.1-244
• /
• 2000

No Abstract, See Full Text

• Journal of the Society of Cosmetic Scientists of Korea
• /
• v.43 no.4
• /
• pp.357-364
• /
• 2017

The aim of this study is to investigate the effect of Hovenia dulcis (oriental raisin tree) extract on ganodermanondiol (GN) contents in Ganoderma lucidum (G. lucidum) mycelia. GN has a triterpenoid structure and is one of the major active components of G. lucidum. Furthermore, we previously proved its inhibitory effects on tyrosinase activity and melanin biosynthesis in B16F10 melanoma cells. In this study, we observed significantly increased GN contents in G. lucidum mycelial extracts supplemented with 15% (v/v) oriental raisin tree extract (ORTE) by HPLC analysis. In addition, melanogenesis was significantly inhibited by G. lucidum extract supplemented with 15% ORTE when compared to G. lucidum extract without ORTE supplementation. Furthermore, mycelial growth of G. lucidum was increased by ORTE supplementation in both solid and liquid cultivation. These results suggest that the oriental raisin tree is useful as natural ingredient for increasing GN biosynthesis as well as whitening effect of G. lucidum.

• PNF and Movement
• /
• v.22 no.1
• /
• pp.55-70
• /
• 2024

Purpose: The purpose of this study was to investigate the effects of three relaxation techniques, namely, Static Stretching Exercise (SSE), Eccentric Contraction Exercise (ECE), and Suboccipital Muscle Release (SMR) on the flexibility and balance of the lower limb in adults with hamstring shortening. Methods: The participants were 45 adults in their 20s with hamstring shortening. They performed three exercises (i.e., SSE, ECE, and SMR) for two weeks. We measured flexibility, muscle tone and stiffness, proprioception, and balance before and after the intervention, applying each relaxation technique. Data were analyzed using two-way repeated measures analysis of variance (ANOVA). The significance level was set at α=0.05. Results: Flexibility increased in the SSE, ECE, and SMR groups, with the SSE group showing the greatest improvement. Muscle tone and stiffness decreased in all groups, with the ECE group exhibiting the highest reduction. Proprioception increased in the SSE, ECE, and SMR groups, with SSE demonstrating the greatest enhancement. Balance also increased in all groups, with the ECE group showing the most pronounced improvement. Conclusion: Overall, all three relaxation techniques for hamstring shortening resulted in improved flexibility, muscle tone and stiffness, proprioception, and balance of the lower limb in adults with hamstring shortening. The findings of this study underscore the importance of selecting an appropriate technique according to the purpose of treatment and the condition of the patient.

• Korean Journal of Medicinal Crop Science
• /
• v.13 no.5
• /
• pp.213-218
• /
• 2005

Phellinus linteus (PL), one of the immune-regulatory substances, is recognized to play the role in the metabolic process on inflammation and immunity. It has been traditionally used in the oriental medicine to treat inflammatory related disease. The purpose of this study was to evaluate the effects of water extracts of PL on the mesenteric lymph node lymphocytes immune function in the ICR male mice. Control mice received vehicle only. The PL treated mice were administered the respective extract by oral gavages for 4 weeks. IgE concentrations in serum and MLN lymphocytes were significantly lower in PL treated mice than in control mice. PL increased the proportion of $CD4^+\;and\;CD8^+$ T cells in MLN lymphocytes. PL significantly decreased Th2 cytokine concentrations and mRNA expression levels in cytokine secretions. Therefore, water extracts of PL modulate inflammatory parameters through regulation of immunoglobulin production resulting from decreased Th2 cytokine secretion and mRNA expression levels and reduce pro-inflammatory cytokine secretion and mRNA expression in MLN lymphocytes.

• Bulletin of the Korean Chemical Society
• /
• v.32 no.4
• /
• pp.1209-1214
• /
• 2011

The synthesis of the series of pyrimidinylamines 1a-d and pyrimidinylureas 1e-u bearing a novel pyridinylcarbonylpyrimidine scaffold and their antiproliferative activities against A375 human melanoma cell line were described. Among them, three compounds 1e, 1h, and 1o showed superior antiproliferative activities to Sorafenib ($IC_{50}=5.5{\mu}M$) as a reference compound. In our series, urea compound 1o having 4-chloro-3-trifluoromethyl moiety on the benzene nucleus exhibited very good antiproliferative activity with $IC_{50}$ value of $1.4{\mu}M$.

• Proceedings of the Zoological Society Korea Conference
• /
• 2001.10a
• /
• pp.236.1-236
• /
• 2001

No Abstract, See Full Text

• Child Health Nursing Research
• /
• v.26 no.4
• /
• pp.463-469
• /
• 2020

Reduction of the under-5 mortality rate is a target of the Sustainable Development Goals. Therefore, this study aimed to estimate under-5 child mortality rates in 52 low-migration countries using population data. The study utilized population data from the US Census Bureau from 1990 to 2015. The method involved first estimating mortality rates for countries with negligible net migration and then applying these rates to countries with matching mortality profiles, where it is reasonable to assume that migration is negligible for children under the age of 5 years. The highest child mortality was concentrated in the African region, followed by Asia and the Western region. However, steady progress in child mortality trends was concentrated in low-income countries. This simple method demonstrated that child mortality has significantly improved in high-income countries, followed by middle- and low-income countries. To reduce the under-5 mortality rates even further in these 52 countries, there is a need to accelerate equitable plans and policies related to child health to promote children's longevity and survival.