중합효소연쇄반응법을 이용한 급성 치수 및 치근단 질환의 병원성 세균의 동정

김지훈,유소영,임선아,국중기,임상수,박슬희,황호길 大韓齒科保存學會 2003 Restorative Dentistry & Endodontics Vol.28 No.2

The purpose of this study was to investigate the frequency of 7 putative pathogens in endodontic infections. The specimens were collected from infected pulpal tissue of patients who were referred for root canal treatment to the department of conservative dentisty, Chosun University. Samples were collected aseptically using a barbed broach and a paper point. The cut barbed broaches and paper points were transferred to an eppendorf tube containing 500 ml of 1 X PBS. DNAs were extracted from the samples by direct DNA extraction method using lysis buffer (0.5% EDTA, 1% Triton X-100). Identification of 7 putative pathogens was performed by PCR based on 16S rDNA. The target species were as follows: Porphyromonas endodontalis, Porphyromonas gingivalis, Prevotella intermedia, Prevotella nigrescens, Bacteroides forsythus, Actinobacillus actinomycetemcomitans, and Treponema denticola. Our data revealed that the prevalence of P.endodontalis was found in 88.6% (39 / 54), P.gingivalis 52.3% (23 / 44), P.nigrescens 18.2%(8 / 44), P.intermedia 15.9% (7 / 44), B.forsythus 18.2% (8 / 44), A.actinomycetemcomitans 2.3% (1 / 44), T.denticola 25% (11 / 44) of the samples. The high prevalence of P. endodontalis and P.gingivalis suggests that they may play an important role in the etiology of endodontic infections.

Effect of Ethyl Acetate Fraction from Actinidia arguta Sprout on Glucotoxicity in Human Neuroblastoma Cells

Seul Ki Yoo,Seon Kyeong Park,Jong Min Kim,Jin Yong Kang,Hye Ju Han,Chul-Wo Kim,Uk Lee,Ho Jin Heo 한국식품영양과학회 2018 한국식품영양과학회 학술대회발표집 Vol.2018 No.10

떫은감(Diospyros kaki Thunb.) 품종 및 수확시기에 따른 영양 성분 변화

유슬기(Seul Ki Yoo),김종민(Jong Min Kim),박선경(Seon Kyeong Park),강진용(Jin Yong Kang),한혜주(Hye Ju Han),박효원(Hyo Won Park),김철우(Chul-Woo Kim),이욱(Uk Lee),허호진(Ho Jin Heo) 한국식품과학회 2019 한국식품과학회지 Vol.51 No.3

본 연구에서는 떫은감의 3가지 품종인 갑주백목, 상주둥시, 고동시의 수확시기(7, 8, 9, 10월)에 따른 유리당, 지방산, 무기성분, 구성 아미노산, 비타민 C와 같은 영양성분 분석 및 UPLC/Q-TOF/MS²를 통한 생리활성 물질을 분석하였고, 총 페놀성 화합물 및 플라보노이드 함량 측정을 진행하였다. 유리당 분석 결과는 미숙과에서 수확과로 갈수록 포도당의 함량이 증가하였고, 과당은 숙기에 따른 변화가 나타나지 않았다. 지방산 분석 결과는 포화 지방산에서 팔미트산(palmitic acid), 불포화 지방산에서 올레산(oleic acid)과 리놀레산(linoleic acid)의 함량이 가장 높았으며 숙기에 따른 큰 변화는 보이지 않았다. 무기성분 분석은 갑주백목, 상주둥시의 7월 시기와 고동시의 10월 시기에 칼륨의 함량이 상당히 높았으며, 구성 아미노산 분석은 갑주백목의 7월 시기에서 글루탐산(glutamic acid), 상주둥시의 8월 시기에서 라이신(lysine), 고동시의 10월 시기에서 트레오닌(threonine)의 함량이 가장 높았다. 비타민 C 분석 결과는 떫은감의 숙성기간에 따라서 비타민 C의 함량이 높아지는 것을 확인 할 수 있었고, 고동시에서 가장 높은 함량을 보여주었다. 그리고 총 폴리페놀 및 플라보노이드 함량측정을 통해서 갑주백목이 다른 품종들에 비해 다량의 페놀성 화합물을 함유하고 있으며, 특히 7월 시기의 미숙과에서 가장 많은 페놀성 화합물들이 존재하는 것으로 판단된다. 마지막으로 대사체 분석과 PLS-DA 분석을 통한 통해서 3가지 품종 및 수확시기에 따른 유의적인 평가하였으며, 유의적인 차이를 나타내는 주요 물질은 시트르산(citric acid) 및 gallic acid로 동정되었으며 이들의 상대적인 함량 변화를 비교하였다. 결과적으로 떫은감의 주요 세 가지 품종 및 수확시기에 따른 영양성분 분석을 통해 품종별 영양학적 특성과 생리활성 성분의 비교 분석 자료를 구축하고자 하였다. This study aimed to determine the chemical components of different cultivars (Gabjubaekmok, Sangjudungsi, and Godongsi) of persimmon (Diospyros kaki Thunb.) and the effects of maturity. The detected free sugars were fructose and glucose, and glucose levels tended to increase with maturity. Palmitic acid, oleic acid, linoleic acid and stearic acid, and potassium were major components. In the amino acid component analysis, the following were usually present in the following month: glutamic acid in Gabjubaekmok in July, lysine in Sangjudungsi in August, and threonine in Godongsi in October. Vitamin C tended to increase with aging, and fruit harvested in July had the highest total phenolic and flavonoid contents. In the metabolite analysis, there were significant differences among cultivars and with maturity. The major physiological compounds were analyzed using ultra performance liquid chromatography quadrupole time-of-flight tandem mass (UPLC/Q-TOF/MS²) and were citric acid and gallic aicd. As maturity progressed, citric acid increased but gallic acid decreased.

포도당으로 유도된 in vitro 뇌신경세포 독성에 대한 다래 순 아세트산에틸 분획물의 보호 효과

유슬기(Seul Ki Yoo),박선경(Seon Kyeong Park),김종민(Jong Min Kim),강진용(Jin Yong Kang),박수빈(Su Bin Park),한혜주(Hye Ju Han),김철우(Chul-Wo Kim),이욱(Uk Lee),허호진(Ho Jin Heo) 한국식품과학회 2018 한국식품과학회지 Vol.50 No.5

본 연구에서는 다래 순 아세트산에틸 분획물(ethyl acetate fraction from Actiniadin arguta sprout; EFAS)의 in vitro 산화방지활성 및 고포도당으로 인한 산화적 스트레스로부터의 뇌신경세포 보호 효과를 검증하였다. EFAS은 상대적으로 우수한 총 폴리페놀(246.25 mg GAE/g) 및 총 플라보노이드(571.59 mg RE/g) 함량을 나타내었으며, 이로 인한 ABTS 라디칼 제거 활성(IC<SUB>50</SUB>=252.00 μg/mL) 및 MDA 생성 억제 활성(IC<SUB>50</SUB>=42.70 μg/mL)을 보여주었다. EFAS의 in vitro 항당뇨 활성은 알파글루코사이드 가수분해효소와 최종당화산물 생성 억제 활성을 통해 측정하였으며 각각 99.18과 85.19 μg/mL의 IC<SUB>50</SUB> 값을 나타냈고, 뇌신경전달물질인 아세틸콜린의 세포 내 유지 효과를 아세틸콜린 분해효소 억제 활성을 통해 측정하였을 때 164.20 μg/mL의 IC<SUB>50</SUB> 값을 나타냈다. 또한 인간 유래 MC-IXC 뇌신경세포에 과산화수소와 고포도당을 처리하여 산화적 스트레스를 유발시켜 뇌신경세포 사멸에 대해 우수한 보호효과를 보여주었다. 마지막으로 HPLC를 통하여, EFAS의 주요 생리활성 물질을 분석한 결과는 루틴으로 유추되었으며, 그 함량은 123.76 μg/mL of dried weight로 분석되었다. 이상의 결과로부터 다래 순 분획물(EFAS)이 알파글루코사이드 가수분해효소 및 최종당화산물 생성 억제를 통해 식후 혈당의 급격한 상승을 예방할 수 있는 항당뇨 소재로의 가능성뿐만 아니라, 고포도당에서 유래되는 산화적 스트레스로부터 뇌신경세포 보호 및 뇌신경전달물질 체계 개선을 통한 당뇨성 퇴행성뇌질환 등의 합병증을 예방할 수 있는 고부가가치 식품 소재로의 활용 가능성을 확인하였다. The current study investigated in vitro anti-diabetic and neuroprotective effects of the ethyl acetate fraction in Actinidia arguta sprouts (EFAS), on H₂O₂ and high glucose-induced cytotoxicity in human neuroblastoma MC-IXC cells. EFAS had high total phenolic and total flavonoid contents. An assessment of 2,2`-azino-bis (3-ethylbenzothiazoline-6- sulfonic acid) radical scavenging activity of EFAS, as well as its potential for inhibiting malondialdehyde production, indicated that EFAS may possess significant antioxidant properties. EFAS exerted inhibitory effects on α-glucosidase via glycemic regulation which forms advanced glycation end products. In addition, EFAS exhibited significant acetylcholinesterase inhibitory effects. Moreover, EFAS displayed protective effects against H₂O₂ and high glucose-induced cell death, and inhibited the generation of reactive oxygen species in MC-IXC cells. Finally, the main physiological compound of EFAS was identified via high performance liquid chromatography as a rutin.

GenomewidePDB, a Proteomic Database Exploring the Comprehensive Protein Parts List and Transcriptome Landscape in Human Chromosomes

Jeong, Seul-Ki,Lee, Hyoung-Joo,Na, Keun,Cho, Jin-Young,Lee, Min Jung,Kwon, Ja-Young,Kim, Hoguen,Park, Young-Mok,Yoo, Jong Shin,Hancock, William S.,Paik, Young-Ki American Chemical Society 2013 Journal of proteome research Vol.12 No.1

<P>In an effort to map the human proteome, the Chromosome-centric Human Proteome Project (C-HPP) was recently initiated. As a member of the international consortium working on this project, our laboratory developed a gene-centric proteomic database called GenomewidePDB, which integrates proteomic data for proteins encoded by chromosomes with transcriptomic data and other information from public databases. As an example case, we chose chromosome 13, which is the largest acrocentric human chromosome with the lowest gene density and contains 326 predicted proteins. All proteins stored in GenomewidePDB are linked to other resources, including neXtProt and Ensembl for protein and gene information, respectively. The Global Proteome Machine database (GPMdb) and the PeptideAtlas are also accessed for observed mass spectrometry (MS) information, while Human Protein Atlas is used for information regarding antibody availability and tissue expression, respectively. Gene ontology disease information is also included. As a pilot work, we constructed this GenomewidePDB with the identified 3615 proteins including 53 chromosome 13-origin proteins that are present in normal human placenta tissue. Thus, developing a comprehensive database containing actual experimental proteomics data will provide a valuable resource for cross chromosomal comparison in the C-HPP community.</P><P><B>Graphic Abstract</B> <IMG SRC='http://pubs.acs.org/appl/literatum/publisher/achs/journals/content/jprobs/2013/jprobs.2013.12.issue-1/pr3009447/production/images/medium/pr-2012-009447_0004.gif'></P>

초음파 영상을 이용한 흡기근 강화 운동과 유산소 운동이 비활동적 성인의 호흡기능에 미치는 영향

강슬기(Seul-Ki Kang),박지혜(Ji-Hye Park),이수연(Su-Yeon Lee),이슬인(Seul-In Lee),최단(Dan Choe),정찬주(Chan-Joo Jeong),강효정(Hyo-jeong Kang),유영대(Young-Dae Yoo) 대한심장호흡물리치료학회 2019 대한심장호흡물리치료학회지 Vol.7 No.1

Purpose : The purpose of this study was to investigate the effects of inspiratory muscle training and aerobic exercise on respiratory function in sedentary adults. Methods : This study was performed on 19 subjects. They were divided into two groups; inspiratory muscle training with ultrasound image(n=10), aerobic exercise(n=9). Both of group performed the exercise 3 times a week for 4weeks. The data was analyzed by the wilcoxon test to compare before and after significant difference of factors on each groups and the mann-whitney test to compare two groups. Results : The results were as follows. There was statistically no significant difference on FVC, FEV1, VC, IC between the groups(p<.05). Conclusion : As a result of this study, it seems that inspiratory muscle training with ultrasound image might be effective like aerobic exercise for sedentary adults.

A case of Ramsay Hunt syndrome diagnosed after kidney transplantation

( Yoo Min Park ),( Da Rae Kim ),( Ji Yoon Park ),( Seul Ki Kim ),( Se Yun Kim ),( Jin Sug Kim ),( Yu Ho Lee ),( Yang Gyun Kim ),( Kyung Hwan Jeong ),( Ju Young Moon ),( Sang Ho Lee ),( Chun Gyoo Ihm ) 대한신장학회 2015 Kidney Research and Clinical Practice Vol.34 No.4

We report the first case of Ramsay Hunt syndrome (RHS) diagnosed after kidney transplantation in Korea. RHS is a disease caused by latent varicella-zoster characterized to involve geniculate ganglion of the seventh cranial nerve. Patients who have undergone kidney transplantation can be easily affected by viral infections because of their immune-compromised status. A 35-year-old man with hypertensive end-stage renal disease underwent kidney transplantation. Two months after surgery, the recipient was diagnosed with RHS and treated with antivirals and steroids. However, after using the antiviral agents for the recommended duration, facial paralysis occurred as a new presentation and he required further treatment. Otalgia and periauricular vesicles improved, but the facial palsy remained.

Hepatic proteome responses against benz[a]anthracene in the rat

Seul-Ki Park,Yoo-Na Seo,남석우,이미영 한국바이오칩학회 2011 BioChip Journal Vol.5 No.4

Benz[a]anthracene (B[a]A) is one of the most ubiquitous polycyclic aromatic hydrocarbons and environmental pollutants. Mass spectrometrybased proteomics was used to characterize changes in the liver proteome in response to B[a]A exposure. Nine hepatic protein spots were identified that exhibited B[a]A-induced significant expression changes. Of these, six were up-regulated and the rest were downregulated by B[a]A at 10% of its LD_(50). At 50% of the LD_(50) of B[a]A, five proteins were up-regulated while the rest were down-regulated. The proteomic results were also consistent with those obtained by western blot. The differential expressions of these proteins mayallow them to serve as biomarker candidates for B[a]A toxicity.

The serum estradiol/oocyte ratio in patients with breast cancer undergoing ovarian stimulation with letrozole and gonadotropins

( Yoo Jin Shim ),( Aeran Seol ),( Dayong Lee ),( Seul Ki Kim ),( Jung Ryeol Lee ),( Byung Chul Jee ),( Chang Suk Suh ),( Seok Hyun Kim ) 대한산부인과학회 2018 Obstetrics & Gynecology Science Vol.61 No.2

Objective To investigate the patterns of estradiol-oocyte ratio (EOR) and estradiol-mature oocyte ratio (EMOR) in patients with breast cancer undergoing controlled ovarian stimulation (COS) using letrozole and gonadotropins for fertility preservation. Methods This retrospective study included 32 breast cancer patients underwent COS for fertility preservation and no patients had previously undergone gonadotoxic treatments. Basal characteristics and in vitro fertilization (IVF) outcomes were compared according to the age of women (age <35 vs. age ≥35) and the starting phase of ovarian stimulation (early follicular phase vs. late follicular phase vs. luteal phase). Results Patients who were administered with a letrozole-combined regimen, the peak serum estradiol (E2) was maintained at a low level (386.3±346.9 pg/mL). EOR was 52.4±78.8 pg/mL, and EMOR was 71.0±41.2 pg/mL. When the 2 groups were compared according to the age of women (age <35 vs. age ≥35), EOR was 34.5 (22.2-46.5) pg/mL and 40.7 (19.3-65.3) pg/mL, respectively; EMOR was 79.8 (40.8-90.6) pg/mL and 68.8 (44.5-85.9) pg/mL, respectively. There was no significant difference in the IVF outcomes. When the 2 groups were compared according to the starting phase of ovarian stimulation, there were no significant differences in IVF outcomes, EOR and EMOR among the groups. Conclusion Measuring the peak E2 concentration in breast cancer patients undergoing IVF for fertility preservation with a co-treatment of letrozole allows for the prediction of the numbers of oocytes and mature oocytes.

Preparation of GO/Polymer Composite Membranes for CO₂ Separation

Seul Ki Lee,Jae Eun Shin,Myung Jin Yoo,Ji Soo Roh,Hyun Hee Lee,Ho Bum Park 한국고분자학회 2016 한국고분자학회 학술대회 연구논문 초록집 Vol.41 No.2