21 research outputs found
Clinical Manifestation of Human Metapneumovirus Infection in Korean Children
Purpose : The aim of this study was to determine the frequency, epidemiology and the clinical manifestation of human metapneumovirus (hMPV) infection in Korean children. Methods : From February 2010 to January 2012, we collected nasopharyngeal aspiration from 1,554 children who were hospitalized for acute lower respiratory tract infections at the Department of Pediatrics, Severance Childrenβs Hospital. hMPV was detected by performing reverse transcriptase-polymerase chain reaction (RT-PCR). The medical records of the patients with positive results were retrospectively reviewed. Results : We detected hMPV in 99 of the 1,554 hospitalized children. The mean age of the hMPV infected children was 25 months, and 87% of the illnesses occurred between April and June. The most common diagnoses were pneumonia (73%) and bronchiolitis (16%). The clinical manifestations included cough, fever, respiratory distress, hoarseness, tachypnea, and
wheezing. Coinfection with other respiratory viruses was found in 43 children (43%). Conclusion : hMPV is one of the major virus causing acute respiratory tract infection in the age between 13 months and 48 months old with peaks during April to June. Reports of hMPV in Korea has been increasing but additional studies are required to define the epidemiology and the extent of disease caused by hMPV to determine future development of this illness in Korean children.ope
Relationship between serum 25-hydroxyvitamin D concentration and risks of metabolic syndrome in children and adolescents from Korean National Health and Nutrition Examination survey 2008-2010
PURPOSE: Previous studies have revealed many inconsistent results regarding the relationship between vitamin D and metabolic syndrome. The purpose of our study was to investigate the association between serum 25-hydroxyvitamin D (25(OH)D) concentration and factors that characterize metabolic syndrome in Korean children and adolescents.
METHODS: We analyzed data from 2,880 children and adolescents aged 10-18 years collected from the 2008-2010 Korean National Health and Nutrition Examination Survey. We investigated the data according to quartiles of 25(OH)D concentrations.
RESULTS: Systolic blood pressure and diastolic blood pressure with adjustment for sex and age differed significantly between the serum 25(OH)D groups and exhibited negative trend as 25(OH)D concentrations increased. The number of subjects with metabolic syndrome was greater in the low 25(OH)D groups (I, II, and III quartile) than in the high 25(OH)D group (IV quartile) (P=0.029). BMI and waist circumference were lower in the high 25(OH)D group. Serum 25(OH)D concentration correlated negatively with homeostasis model assessment estimate of insulin resistance (Ο=-0.073, P<0.001) and correlated positively with quantitative insulin sensitivity check index (Ο=0.095, P<0.001).
CONCLUSION: Low serum 25(OH)D level is associated with an increase of insulin resistance and metabolic syndrome in children and adolescents.ope
Etiologies and characteristics of children with chief complaint of short stature
PURPOSE: Short stature is a very common reason for visits to pediatric endocrine clinics. It could be the first sign of an underlying disease. The purpose of this study is to investigate the etiologies and general characteristics of subjects who visited an outpatient clinic due to short stature.
METHODS: We retrospectively reviewed the medical records of 3,371 patients who visited Severance Children's Hospital with the chief complaint of short stature from 2010 to 2012. Medical history, auxological data, and laboratory tests including bone age were collected and analyzed. Chromosome studies or combined pituitary function tests were performed if needed.
RESULTS: Approximately 89.4% of the subjects with the chief complaint of short stature who visited the outpatient clinic were of normal height, and only 10.6% of subjects were identified as having short stature. Of the subject of short stature, 44.7% were classified as having normal variant short stature; that is, familial short stature (23.0%), constitutional delay in growth (17.7%), and mixed form (3.9%). Pathological short stature was found in 193 subjects (54.2%). Among pathological short stature, most common etiology was growth hormone deficiency (GHD) (38.9%).
CONCLUSION: A majority of children had a normal height. Among children with short stature, pathological short stature and normal variants occupied a similar percentage. GHD was the most common cause of pathological short stature and found in about 20% of the children with short stature. In pathological short stature, the height, height velocity, and IGF-1 level were lower than in normal variants.ope
Insulin-like growth factor binding protein-3 induces senescence by inhibiting telomerase activity in MCF-7 breast cancer cells
Insulin-like growth factor binding protein-3 (IGFBP-3) has been known to inhibit cell proliferation and exert tumor-suppressing effects depending on the cell type. In this study, we aimed to show that IGFBP-3 induces cellular senescence via suppression of the telomerase activity, thereby inhibiting MCF-7 breast cancer cell proliferation. We found that the induction of IGFBP-3 in MCF-7 cells enhanced the loss of cell viability. Flow cytometry revealed a higher percentage of non-cycling cells among IGFBP-3-expressing cells than among controls. IGFBP-3 induction also resulted in morphological alterations, such as a flattened cytoplasm and increased granularity, suggesting that IGFBP-3 induces a senescence-like phenotype. The percentage of IGFBP-3 expressing cells with senescence-associated Ξ²-galactosidase activity was 3.4 times higher than control cells. Telomeric repeat amplification and real-time PCR showed that IGFBP-3 decreased telomerase activity by reducing the levels of the RNA component (hTR) and catalytic protein component with reverse transcriptase activity (hTERT) of telomerase in a dose-dependent manner. These results suggest that IGFBP-3 is a negative regulator of MCF-7 breast cancer cell growth by inducing senescence through telomerase suppression. Β© 2023, The Author(s).ope
Factors that predict a positive response on gonadotropin-releasing hormone stimulation test for diagnosing central precocious puberty in girls
Purpose
The rapid increase in the incidence of precocious puberty in Korea has clinical and social significance. Gonadotropin-releasing hormone (GnRH) stimulation test is required to diagnose central precocious puberty (CPP), however this test is expensive and time-consuming. This study aimed to identify factors that can predict a positive response to the GnRH stimulation test.
Methods
Clinical and laboratory parameters, including basal serum luteinizing hormone (LH), follicle-stimulating hormone (FSH), and estradiol (E2), were measured in 540 girls with clinical signs of CPP.
Results
Two hundred twenty-nine of 540 girls with suspected CPP had a peak serum LH level higher than 5 IU/L (the CPP group). The CPP group had advanced bone age (P<0.001), accelerated yearly growth rate (P<0.001), increased basal levels of LH (P=0.02), FSH (P<0.001), E2 (P=0.001), and insulin-like growth factor-I levels (P<0.001) compared to the non-CPP group. In contrast, body weight (P<0.001) and body mass index (P<0.001) were lower in the CPP group. Although basal LH was significantly elevated in the CPP group compared to the non-CPP group, there was considerable overlap between the 2 groups. Cutoff values of basal LH (0.22 IU/L) detected CPP with 87.8% sensitivity and 20.9% specificity.
Conclusion
No single parameter can predict a positive response on the GnRH stimulation test with both high sensitivity and specificity. Therefore, multiple factors should be considered in evaluation of sexual precocity when deciding the timing of the GnRH stimulation test.ope
An Empirical Study on the Determinants of Public Policy Types in Local Governments: Focused on the Local Governments By-laws
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Abstract 145Maste
(a) Study on R. Schumanns Liederkreis Op.38 - Program annotation -
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κ°κ³‘μ΄λΌλ μ₯λ₯΄λ λλ§μλμ μκ³‘κ° Franz Schubertμ μν΄ ν립λμκ³ μ΄μ΄ Robert Schumannμ μν΄ λμ± λ°μ λ ννλ‘ μ리 μ‘μλ€. 무μ보λ€λ Schumann(μ΄ν μλ§)μ κ°κ³‘κ³Ό μμ λν κΉμ ν΄μμ λ°νμΌλ‘ νμλ€. κ°κ³‘μ΄ μμ μμ κ³Ό μ¬μΈνκ² μ΄μΈλ¦¬λ μμ
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μ μ΄λ€λλ€.Based on the masterΒ΄s course Graduate Recital : Robert Schumanns Liederkreis Op. 39, this paper focused on analyzing and studying Schumann's life and work Liederkreis.
The genre called art song was established by the composer Franz Schubert in the Romantic period, and was further developed by Robert Schumann. Above all, Schumann (hereinafter Schumann) was based on a deep interpretation of art song and poetry. art song enabled musical expression delicately harmonized with lyricism of poems and technically, it emphasized the melody of accompaniment, stressing the harmony equal to vocal music. Thus, Schumann's own music was widely known to the contemporary world and reached the peak of the Romantic period.
Schumann, a composer and music critic, discovered and informed many musical talents to the world through a music review operated and published by himself. A favorable review by Schumann and resulting popularity enabled some musicians to leave their traces on the world to this day, so his great contribution to the Romantic period is also important. To Schumann, 1840 is called the year of art songs. This was due to the fact that he married in a difficult way this year and composed art songs almost explosively with it as a momentum.
This paper was to get a deeper understanding of his intended music world by analyzing a song cycle, Liederkreis Op. 39 composed at this time that can be called as Schumanns heyday.
The most striking feature of art songs composed by Schumann is that it achieved a progress remarkably different from before in the piano accompaniment. In other words, it is not the role of the accompaniment to help the vocal music, but music is played with each character in the same position as vocal music.
The song cycle was composed of 12 songs, so it doesn't seem to have unity because the stories of each song are not connected. However, Schumann used roof-type melody and E β H β E motive to give the whole unity.
In addition, it achieved original Schumann's own music at the heart of romantic period by deviating from the composition of classical music with the use of Schumann's own chromatic chord progression, non harmonic tone.β
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Abstract 52Maste
Identification of hepatitis E virus in human and application of real-time RT-PCR in detection
Thesis(master`s)--μμΈλνκ΅ λνμ :μμνκ³Ό μμλ―Έμλ¬Όν μ 곡,2006.Maste
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Purpose: To investigate the distribution of mutation in genes causing short stature in Korean pediatric patients with idiopathic short stature and isolated growth hormone deficiency and to analyze clinical and molecular characteristics of patients with mutation identified through targeted next-generation sequencing panel. Methods: A total of 144 patients aged between 5 and 19 years who were diagnosed with isolated growth hormone deficiency or idiopathic short stature and who visited the Department of Pediatrics at Severance Children's Hospital from January 2013 to December 2013 were selected as subjects of this study. Targeted next-generation sequencing panel for short stature was designed to include 96 genes. Results: Identified heterozygous pathogenic or likely pathogenic genetic variants in 14 (10%) patients. Of the mutated genes, PROKR2 (n = 3) is associated with gonadotropin-releasing hormone deficiency or hypopituitarism, while FGFR1 (n = 1) and NPR2 (n = 3) encode growth plate paracrine factors. FBN1 (n = 1), COL9A1 (n = 1), MATN3 (n = 1), and ACAN (n = 3) regulate the cartilage extracellular matrix, while PTPN11 (n = 1) controls intracellular pathways. Six patients had IGHD, and eight patients had ISS. Conclusions: We performed the genetic analysis of non-syndromic short stature for the first time in Korea. The patients with growth hormone deficiency and idiopathic short stature without dysmorphic features may have a gene defect in the growth plate and cartilage extracellular matrix. In cases of short stature cannot be diagnosed by the hormone test alone, a genetic test is required.
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μκ²μ νμΈλ PROKR2 μ μ μ λ³μ΄λ μ±μ₯ νΈλ₯΄λͺ¬ κ²°νκ³Ό κ΄λ ¨μ΄ μμΌλ©° μ±μ₯νμ νλΌν¬λ¦° μΈμμ μν₯μ λ―ΈμΉλ FGFR1 (n = 1)λ° NPR2 (n = 3) μ μ μ λ³μ΄κ° νμΈλμλ€. μ°κ³¨ μΈν¬ μΈ κΈ°μ§μ μν₯μ μ£Όλ μ μ μ FBN1 (n = 1), COL9A1 (n = 1), MATN3 (n = 1) λ° ACAN (n = 3)μ λ³μ΄λ 6λͺ
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