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Kim, Hyunwook,Kim, Kyoung Hoon,Park, Kisoo,Kang, Shin-Wook,Yoo, Tae-Hyun,Ahn, Song Vogue,Ahn, Hyeong Sik,Hann, Hoo Jae,Lee, Shina,Ryu, Jung-Hwa,Kim, Seung-Jung,Kang, Duk-Hee,Choi, Kyu Bok,Ryu, Dong-Ry Springer-Verlag 2014 Kidney international Vol.86 No.5
To date, only a few large-scale studies have measured the effect of dialysis modality on mortality in Asian populations. Here, we sought to compare survival between incident hemodialysis (HD) and peritoneal dialysis (PD) patients using the Korean Health Insurance Review & Assessment Service database. This enabled us to perform a population-based complete survey that included 32,280 incident dialysis patients and followed them for a median of 26.5 months. To reduce biases due to nonrandomization, we first matched 7049 patient pairs with similar propensity scores. Using the log-rank test, we found the mortality rate in PD patients was significantly higher than that in HD patients. Subsequent subgroup analyses indicated that in older patients (55 years and older), with the exception of the subgroup of patients with no comorbidities and the subgroup of patients with malignancy, PD was consistently associated with a higher mortality rate. In younger patients (under 55 years), regardless of the covariates, the survival rate of PD patients was comparable to that of HD patients. Thus, while the overall mortality rate was higher in incident PD patients, mortality rates of some incident PD and HD patients were comparable in Korea.
Na, Kun-Hoo,Kim, Hyun Jung,Kim, Kyoung Hoon,Han, Seungjin,Kim, Patrick,Hann, Hoo Jae,Ahn, Hyeong Sik Elsevier 2017 American journal of ophthalmology Vol.176 No.-
<P><B>Purpose</B></P> <P>To determine the prevalence and mortality of retinitis pigmentosa (RP) patients in Korea.</P> <P><B>Design</B></P> <P>Population-based retrospective cohort study.</P> <P><B>Methods</B></P> <P>We used data covering the 2011–2014 period from the Rare Intractable Disease (RID) registry and Health Insurance Review and Assessment (HIRA) service, which include information on all patients diagnosed with RP based on predefined diagnostic criteria. Using the HIRA-RID database, we evaluated the prevalence and age at diagnosis of RP patients across the entire Korean population. We further linked the data from Statistics Korea to the HIRA-RID database to confirm mortality and causes of death.</P> <P><B>Results</B></P> <P>The prevalence in the total population across all ages was 11.09 per 10<SUP>5</SUP> people, and the prevalence in those over the age of 40 was 16.16 per 10<SUP>5</SUP> people. The age at diagnosis ranged from 0 to 95 and, on average, was 44.8. The standardized mortality ratio (SMR) was 1.56 for all ages, peaking at 2.61 in men aged 40–59, which was attributed to 6.6-fold higher suicide rates than the same age group in the general male population.</P> <P><B>Conclusions</B></P> <P>This is the first nationwide epidemiologic study of RP patients covering the entire population of all ages. The results suggest that the prevalence of RP in Korea is about 1 in 9000 for all ages and 1 in 6000 for those over 40 years of age. The higher mortality of RP patients than that of the general population is attributable to a high suicide rate in male RP patients of working ages, which necessitates a careful attention to their mental health.</P>
So Ra Kim,Mi-Kyung Kwak,Hye Ran Kang,Seug Yun Yoon,Seong Soon Kwon,Bo Young Kim,Hoo Nam Choi,Hye Jeong Kim,Jae Wook Kim,So-Young Jin,Hyeong Kyu Park,Dong Won Byun,Kyoil Suh,Myung-Hi Yoo 순천향대학교 순천향의학연구소 2014 Journal of Soonchunhyang Medical Science Vol.20 No.2
Although the prognosis of papillary thyroid cancer (PTC) is extremely good, locoregional recurrences after initial treatment occur. Thyroglobulin (Tg) is a reliable tumor marker to detect recurrence or persistence of PTC. However, occasionally serum Tg may miss the detection of a recurrence. We report a 54-year-old female presented with hoarseness due to cervical recurrence without concomitant elevation of serum Tg and anti-Tg antibody, in contrast to extremely increased needle-washout Tg, who had undergone a total thyroidectomy and radioiodine ablation as initial therapies for PTC. Several factors causing such discrepancy between needlewashout Tg and serum Tg can be suggested including site of recurrence, volume of tumor, interference by some kind of plasma antibodies other than anti-Tg antibody, and any conformational defect of Tg protein. Among them, the most convincing explanation is that any conformational defect of Tg may lead to impaired secretion of Tg to blood. We suggest that more studies are needed to find the cause for potential mechanisms involved in PTC recurrences without increased serum Tg.
김영혁(Young-Hyuk Kim),박인후(In-Hoo Park),김하늬(Honey Kim),전민(Min Jhon),강희주(Hee-Ju Kang),이주연(Ju-Yeon Lee),유승형(Seung-Hyeong Ryu),김재민(Jae-Min Kim),김성완(Sung-Wan Kim) 대한생물치료정신의학회 2020 생물치료정신의학 Vol.26 No.3
Objectives:This study investigated psychosocial risk and protective factors associated with suicide attempt. Methods:This cross-sectional study included 1,466 participants. Socio-demographic and clinical variables were collected. The following scales were used : Hospital Anxiety and Depression Scale (HADS), Perceived Stress Scale (PSS), Alcohol Use Disorder Identification Test-Korean version (AUDIT-K), Family Adaptability & Cohesion Evaluation Scale III (FACES-III), Korean version of Connor-Davidson Resilience Scale (K-CD-RISC), Rosenberg Self-Esteem Scale (RSES), and Korean version of Gratitude Questionnaire 6 (K-GQ-6). Univariate and logistic regression analyses were used to identify factors associated with a history of suicide attempt. Results:Seventy-one of the 1,466 participants (4.8%) reported a history of suicide attempt. Attempted suicide was less common in married individuals, but more common in Medicaid recipients and smokers. Compared with participants who had not attempted suicide, participants who had attempted suicide had higher scores for the HADS, AUDIT- K, and PSS, whereas they had lower scores for the FACES-III, RSES, K-GQ-6, and four subscales of the K-CDRISC (Hardiness, Persistence, Optimism, and Support). Logistic regression analysis revealed that Medicaid use [odds ratio (OR)=5.837] and AUDIT-K score (OR=1.066) were positively associated with a history of suicide attempt. Marriage (OR=0.451), FACES-III score (OR=0.971), and K-CD-RISC Support subscale score (OR=0.711) were negatively associated with a history of suicide attempt. Conclusion:Low income and alcohol abuse were positively associated with attempted suicide, whereas marriage, high family cohesion, and social support were negatively associated with attempted suicide in the general population. A social and economic support system might aid suicide prevention.
나노인덴테이션으로 측정한 Ti(C<sub>0.7</sub>N<sub>0.3</sub>)-WC-Ni 써멧 구성상의 경도
김성원,김대민,강신후,김형준,김형태,Kim, Seong-Won,Kim, Dae-Min,Kang, Shin-Hoo,Kim, Hyeong-Jun,Kim, Hyung-Tae 한국세라믹학회 2009 한국세라믹학회지 Vol.46 No.1
The constituent phases in Ti($C_{0.7}N_{0.3}$)-xWC-20Ni (wt%, x=5, 15, 25) cermets were characterized using nanoindentation in conjunction with observation of microstructure. The microstructure of cermet is composed of hard phase and binder phase, which gave rise to a wide range of hardness distribution when nanoindentation was carried out on the polished surface of cermets. Because of the inhomogeneous nature of cermet microstructure, observation of indented surface was indispensable in order to separate the hardness of each constituent phase. The measured values of hardness using nanoindentation were ${\sim}14\;GPa$ for the binder phase and ${\sim}24$ to 28 GPa for the hard phase, of which nanoindentation hardness was decreased with the addition of WC into Ti($C_{0.7}N_{0.3}$)-Ni system. In addition, the nanoindentation hardness of Ni binder phase was much higher than reported Vickers hardness, which could result from confined deformation of binder phase due to the surrounding hard phase particles.
Kim, Hyun Jung,Hann, Hoo Jae,Hong, Sung No,Kim, Kyoung Hoon,Ahn, Il Min,Song, Ji Yang,Lee, Sang Hyuk,Ahn, Hyeong Sik Raven Press 2015 Inflammatory bowel diseases Vol.21 No.3
<P>Although a rising trend in the incidence of inflammatory bowel disease (IBD) in Asia has been recognized, national-level, population-based studies are lacking. In this study, we investigate the epidemiological features and natural course of IBD in Korea, including incidence, bowel resection rates, survival, and cause of death.</P>
가스크로마토그래피를 이용한 화장품 중 항균작용의 3종의 직쇄상 1,2-알칸디올류의 동시분석
이후섭 ( Hoo Seob Lee ),이상훈 ( Sang Hun Lee ),김은죽 ( Eun Juk Kim ),정철희 ( Cheol Hee Chung ),표형배 ( Hyeong Bae Pyo ) 대한화장품학회 2014 대한화장품학회지 Vol.40 No.1
화장품에 사용되는 방부제로는 가격이 저렴하고 방부효과가 좋은 파라벤류, 페녹시에탄올 및 클로로페네신 등이 일반적으로 사용된다. 하지만, 최근들어 이들 방부제가 독성과 피부 자극을 유발할 수 있다는 소비자들의 인식으로 인하여 항균 작용이 있는 직쇄상 1,2-알칸디올로 대체되고 있는 추세이다. 하지만, 항균 작용의 직쇄상 1,2-알칸디올도 피부에 자극을 줄 수 있어 제한적으로 사용되어야 하므로 화장품 내 함량을 관리하는 것이 중요하다. 본 실험에서는 가스크로마토그래피 불꽃이온화검출기(GC/FID)를 이용하여 화장품에서 3종의 직쇄상 1,2-알칸디올류 중, 1,2-pentanediol, 1,2-hexanediol, 1,2-octanediol을 동시 분석하였다. 분석법 Validation 결과 특이성을 확인할 수 있었고, 3종의 직쇄상 1,2-pentanediol, 1,2-hexanediol, 1,2-octanediol의 검량선은 100~1,200 μg/g의 농도 범위에서 상관계수가 0.999 이상의 양호한 직선성을 나타내었다. 검출한계(LOD)와 정량한계(LOQ)는 각각 31, 40, 19 μg/g와 98, 108, 57 μg/g로 나타났다. 화장품 내 함량에 대한 정밀성(반복성)은 2.0% 이하의 상대표준편차(% RSD)를 나타냈고, 정확성(회수율)은 99.3 ~ 103.3%, 99.4 ~ 106.7%, 97.5 ~ 107.3%로 각각 나타났다. 따라서 화장품 내에서 3종의 1,2-알칸디올류의 동시 분석이 가능함을 알 수 있었다. 본 시험법은 3종의 1,2-알칸디올류를 화장품에서 정확하게 정량하는데 활용될 수 있을 것이다. Preservatives such as paraben, phenoxyethanol, and chlorphene are commonly used in cosmetics thanks to cheap price and good antiseptic effect. Recently, consumers’ concerns about their possible toxicity and skin irritation forced them to be replaced with straight 1,2-alkanediols. However, as the alkanediols may also irritate skin, limited amount of them should be used in cosmetics. Three 1,2-alkanediols including 1,2-pentanediol, 1,2-hexanediol, and 1,2-octanediol in cosmetics were analyzed simultaneously by gas chromatogrphy with flame ionization detector. As a result of method validation, the specificity was confirmed by the calibration curves of 1,2-pentanediol, 1,2-hexanediol, and 1,2-octanediol showing good linearity correlation coefficient of above 0.999 over the concentration range of 100 ~ 1,200 μg/g. The limit of detection (LOD) and quantification (LOQ) of 1,2-pentanediol, 1,2-hexanediol, and 1,2-octanediol were 31, 40, and 19 μg/g and 98, 108, and 57 μg/g, respectively. The precision (Repeatability) of the amount in cosmetics showed less than 2.0%. Relative Standard Deviation (% RSD) and the Accuracy (% recovery) of the amount in cosmetics showed 99.3 ~ 103.3, 99.4 ~ 106.7, 97.5 ~ 107.3% respectively. As a result, simultaneous analysis of antimicrobial three 1,2-alkanediols in cosmetics were possible. This method can be utilized in accurate quantitative analysis of 1,2-alkanediols in cosmetics.
자궁경부암의 방사선 치료 후 발생한 악성혼합 뮬러리안종양의 1예
김형선(Hyeong Seon Kim),강현아(Hyun Ha Gang),홍상기(Sang Gi Hong),서승식(Sung Sik Suh),이영호(Yung Hoo Lee) 대한산부인과학회 2001 Obstetrics & Gynecology Science Vol.44 No.5
Malignant mixed m?lerian tumors are uncommon neoplasms of the female genital track that histologically consist of malignant epithelial and stromal components. Malignant mixed m?lerian tumors generally occur in elderly woman and are associated with a poor prognosis. We experienced a case of malignant mixed m?lerian tumor recieved pelvic irradiation for the uterine cervical cancer 11 years prior to the diagnosis of the tumor and report with a brief review of the literature.