한랭작업 근로자들의 건강위해에 관한 연구

박호추,정설미,문덕환,이종태,김대환,김정호,최재일,황용식,이용희,이채언 大韓産業醫學會 1999 대한직업환경의학회지 Vol.11 No.1

In order to evaluate the status of cold exposure and its health hazards of workers at cold storage workplaces and to provide basic data for effective health care, the author measured core temperature and also observed clinical symptoms and signs, past and present history, and general health examination data on 99 cold exposed workers for exposure group and 96 non-exposed workers for control group working at 2 food refrigerating companies in Pusan area from January 6, 1998 to February 24, 1998. The results were as follows: 1. There was statistically significant difference in water intake between the exposure and control group and increased urine volume, urine frequency in exposure group without statistically significant difference. 2. Past and present illness in exposure group were hypertension (18.2%), hepatopathy (8.1%), gastro-intestinal disease(7.1%), arthritis (4.0%), intervertebral disc herniation(4.0%), and so on, and hypertension, arthritis was statistically significant difference compared to control group. 3. Symptoms in exposure group were fatigue(89.9%), headache (64.6%). drowsy(63.6%), neck stiffness(59.6%), excessive food intake(59.6%). general weakness(58.6%), hunger(58.6%), numbness(54.5%), and so on, and there was statistically significant difference between the exposure and control group except fatigue, drowsy. 4. As results of clinical test abnormality rate of the systolic, diastolic blood pressure and electrocardiogram were significantly higher in exposed group than control. 5. Core temperature in exposure group was statistically significantly lower than control group and the highest statistically significant inverse correlation with the working hours and working frequency of daily mean cold storage. As above results, the author suggested that the further studies should be conducted to evaluate the health status of workers about chronic health effects in cold workplaces and to establish effective health care methods for them.

열공형과 비열공형 피질하 혈관성 치매에서 위험인자의 차이에 관한 비교 연구

배희준,정지향,유경호,나덕렬,김상윤,최경규,양동원,손의주,이상도,김재우,박경원,김응규,이재홍,박미영,한일우,함동석,최문성,하충건,최성혜,이애영,이병철,한설희 대한치매학회 2003 Dementia and Neurocognitive Disorders Vol.2 No.2

Backgrounds and Objectives: Vascular dementia is a group of dementing disoders arising from various stroke syndrome. Among these. subcortical ischemic vascular dementia (SIVD) is regarded as a relatively distinct clinical entity. However, MRI patterns of SIVD are not homogenous. In some patients, lacunes are dominant, and in others, subcortical white matter changes are. This study was designed to compare risk factor profiles between SIVD with and without multiple lacunes. Methods: We divided 47 subjects (22 males, mean age. 68 years) recruited from VADAPET (Multicenter Trial For Evaluation Of The Changes In the PET Images Of Subcortical Vascular Dementia Patient) study into two groups one with more than 5 lacunes in deep gray matter (lacune group) and the other with 5 or less(non-lacune group) Clinical characteristics and laboratory findings of two groups were compared. Results: Nineteen of 47 patients (40%) belonged to the lacune group. The lacune and non-lacune groups d d not differ in the following variables: age, hypertension, diabetes mellitus, hyperlipidemia heart disease, history of stroke or TIA, history of trauma or major surgery, family history of hypertension stroke, or dementia, age at diagnosis of dementia, body mass index, white blood cell count, ESR, CRP, fibrinogen, hemoglobin A1C, total cholesterol. LDL cholesterol creatinine, proteinuria, glucosuria, and microhematuria. However, male sex, smoking alcohol. hemoglobin, and HDL cholesterol were possibly associated more with lacune group SIVD than with non-lacune group (p<0 1) Multivariate analyses revealed that smoking, hemoglobin, and HDL cholesterol were independent predictors of SIVD with multiple lacunes Conclusion: Our study suggests that SIVD with multiple lacunes may be significantly different in smoking habits hemoglobin, and HDL cholesterol from SIVD without multiple lacunes.

Epstein-Barr Virus 감염 Burkitt’s Lymphoma 세포주에 Mitomycin C 처리 시 종양유전자 발현

염범우,박설희,김민경,김철환,김인선,이대일 대한병리학회 2001 Journal of Pathology and Translational Medicine Vol.35 No.4

Elevated TRAF2/6 expression in Parkinson's disease is caused by the loss of Parkin E3 ligase activity.

Chung, Ji-Yun,Park, Hee Ra,Lee, Su-Jin,Lee, Sun-Hye,Kim, Jin Sik,Jung, Youn-Sang,Hwang, Sang Hyun,Ha, Nam-Chul,Seol, Won-Gi,Lee, Jaewon,Park, Bum-Joon United States and Canadian Academy of Pathology [e 2013 Laboratory investigation Vol.93 No.6

<P>Parkinson's disease (PD) is the second leading neurodegenerative disease, and is known to be induced by environmental factors or genetic mutations. Among the verified genetic mutations of PD, Parkin, isolated from the PARK2 locus, shows an autosomal recessive inheritance pattern and is known to be an E3 ligase. However, the physiological target of Parkin and the molecular mechanism of Parkin-deficiency-induced PD have not been clearly demonstrated until now. It has recently been proposed that inflammation, suggesting as a causal factor for PD, is enhanced by Parkin deficiency. Thus, we examined the relationship between inflammation-related factors and Parkin. Here, we provide the evidence that Parkin suppresses inflammation and cytokine-induced cell death by promoting the proteasomal degradation of TRAF2/6 (TNF-α receptor-associated factor 2/6). Overexpression of Parkin can reduce the half-lives of TRAF2 and TRAF6, whereas si-Parkin can extend them. However, mutant Parkins did not alter the expression of TRAF2/6. Thus, loss of Parkin enhances sensitivity to TNF-α- or IL-1β-induced JNK activation and NF-κB activation. Indeed, si-Parkin-induced apoptosis is suppressed by the knockdown of TRAF6 or TRAF2. We also observed elevated expression levels of TRAF6 and a reduction of IκB in an 1-methyl-4-phenyl-1,2,3,6-tetrahydropyridine-induced PD mouse model. Moreover, elevated expression levels or aggregation of TRAF6 were detected in approximately half of the human PD tissues (7/15 cases) and 2 cases, respectively. In addition, TRAF6 and Parkin expression levels show a reverse relationship in human PD tissues. Our results strongly suggest that the reduction of Parkin or overexpression of TRAF2/6 by chronic inflammation would be the reason for occurrence of PD.</P>

加味鷄血藤湯이 Glutamate receptor와 Free radical 및 뇌손상 보호에 미치는 영향

안종석,김동희,김윤식,이용구,박종오,남궁욱,설인찬 대한동의병리학회 2003 동의생리병리학회지 Vol.17 No.3

This study was investigated to prove the effect of GMGHT on the gultamate receptor, free radical and brain damage in rats sujected to Brain Ischemia The results were as follows ; 1. GMGHT showed significant inhibitory effect of GMGHT on LDH release induced by NMDA, AMPA, and kinate. 2. GMGHT showed significant inhibitory effect of GMGHT on LDH release induced by BSO and Fe^2+. 3. GMGHT decreased coma duration time in a infatal dose of KCN and showed 30% of survival rate in a fatal dose. 4. GMGHT decreased ischemic area and edema incited by the MCA blood flow block. 5. GMGHT showed improvement of forelimb test after MCA occulusion in neurological exemination. 6. GMGHT showed no significant change after MCA occulusion in pathological observation as normal group. These results indicate that GMGHT can be used in the brain damage sujected to Brain Ischemia. Further study will be needed about the functional mechanism and etc.

The Feasibility of $^{18}F$-Fluorothymidine PET for Prediction of Tumor Response after Induction Chemotherapy Followed by Chemoradiotherapy with S-1/Oxaliplatin in Patients with Resectable Esophageal Cancer

Park, Seol-Hoon,Ryu, Jin-Sook,Oh, Seung-Jun,Park, Seung-Il,Kim, Yong-Hee,Jung, Hoon-Yong,Lee, Gin-Hyug,Song, Ho-Jun,Kim, Jong-Hoon,Song, Ho-Young,Cho, Kyoung-Ja,Kim, Sung-Bae The Korea Society of Nuclear Medicine 2012 핵의학 분자영상 Vol.46 No.1

Purpose : The aim of this study was to determine whether $^{18}F$-fluorothymidine (FLT) PET is feasible for the early prediction of tumor response to induction chemotherapy followed by concurrent chemoradiotherapy in patients with esophageal cancer. Methods : This study was prospectively performed as a collateral study of "randomized phase II study of preoperative concurrent chemoradiotherapy with or without induction chemotherapy with S-1/oxaliplatin in patients with resectable esophageal cancer". $^{18}F$-FLT positron emission tomography (PET) images were obtained before and after two cycles of induction chemotherapy, and the percent change of maximum standardized uptake value (SUVmax) was calculated. All patients underwent esophagography, gastrofiberoscopy, endoscopic ultrasonography (EUS), computed tomography (CT) and $^{18}F$-fluorodeoxyglucose (FDG) PET at baseline and 3-4 weeks after completion of concurrent chemoradiotherapy. Final tumor response was determined by both clinical and pathologic tumor responses after surgery. Results : The 13 patients for induction chemotherapy group were enrolled until interim analysis. In a primary tumor visual analysis, the tumor detection rates of baseline $^{18}F$-FLT and $^{18}F$-FDG PET were 85% and 100%, respectively. The tumor uptakes on $^{18}F$-FLT PET were lower than those of $^{18}F$-FDG PET. Among nine patients who completed second $^{18}F$-FLT PET, eight patients were responders and one patient was a non-responder in the assessment of final tumor response. The percent change of SUVmax in responders ranged from 41.2% to 79.2% (median 57.1%), whereas it was 10.2% in one non-responder. Conclusion : The percent change of tumor uptake in $^{18}F$-FLT PET after induction chemotherapy might be feasible for early prediction of tumor response after induction chemotherapy and concurrent chemoradiotherapy in patients with esophageal cancer.

High-resolution quantitative trait locus analysis reveals association of BRMS1L with total teat number in a large intercross between Landrace and Korean native pigs

Hee-Bok Park,Moon-Cheol Shin,Pil-Nam Seong,Nam-Young Kim,Jun-Kyu Son,Jae Hoon Woo,Seol Hwa Park,Sang-Min Shin,Nam Geon Park,In-Cheol Cho 한국수정란이식학회 2017 한국수정란이식학회 학술대회 Vol.2017 No.05

Previously, we reported a quantitative trait locus (QTL) that affect total teat number (TTN) on pig chromosome 7 (SSC7) in a large F2 intercross population between Landrace and Korean native pigs. The aim of this study was to refine the QTL associated with TTN and to identify positional candidate gene(s) within the refined genomic region. TTN was recorded in 1,105 F2 progeny. All experimental animals were genotyped using 998 informative single nucleotide polymorphism (SNP) markers located on SSC7. A haplotype-based linkage and association analysis using the PHASEBOOK programme was applied to perform high-resolution QTL analysis. Additionally, linear mixed-effect models were used to assess the effect of a positional candidate gene on TTN and other economically important traits [i.e., thoracic vertebrae number (THO), carcass body length (CBL) and weight (CW), back fat thickness (BFT) and intramuscular fat content (IMF) in loin muscles]. Joint linkage and association analysis refined the critical region to a 1.07 Mb region that included a novel positional candidate gene, BRMS1L, that encodes the breast cancer metastasis-suppressor 1-like protein, which could possibly be implicated in normal mammary gland development. Significant association of an SNP marker (g.-1087 G>A) in the 5’-flanking region of BRMS1L with TTN (P=1.10x10-8), THO (P=5.80x10-4), and CBL (P=0.038) was observed. Based on these data, we propose BRMS1L as a positional candidate gene for TTN in pigs. After validation of the association in other independent populations and further functional studies, these results could be useful in optimizing breeding programmes that improve TTN and other economically important traits in swine

Insulin-like growth factor-1 protects against prion peptide-induced cell death in neuronal cells via inhibition of Bax translocation

PARK, YANG-GYU,JEONG, JAE-KYO,MOON, MYUNG-HEE,LEE, JU-HEE,LEE, YOU-JIN,SEOL, JAE-WON,KIM, SHANG-JIN,KANG, SEOG-JIN,PARK, SANG-YOUEL Spandidos Publications 2012 INTERNATIONAL JOURNAL OF MOLECULAR MEDICINE Vol.30 No.5

<P>Insulin-like growth factor-1 (IGF-1) is one of the most important components of bovine colostrum. It exhibits antiapoptotic and antioxidative activities. Prion diseases are neurodegenerative disorders caused by cell death through mitochondrial dysfunction and increasing generation of reactive oxygen species (ROS). This study examined the protective effect of IGF-1 on residues 106-126 of the cellular prion protein [PrP (106-126)]-mediated mitochondrial neurotoxicity and oxidative stress. In SH-SY5Y human neuronal cells, treatment with PrP (106-126) decreased the cell viability and IGF-1 pretreatment markedly blocked the PrP?(106-126)-induced neuronal cell death. IGF-1 inhibited PrP?(106-126)-induced intracellular ROS generation and mitochondrial oxidative stress. In addition, IGF-1 blocked the translocation of the Bax protein to the mitochondria induced by PrP (106-126). These results demonstrate that IGF-1 protects neuronal cells against PrP (106-126)-mediated neurotoxicity through an antioxidative effect and blockage of mitochondrial Bax translocation. The results also suggest that regulation of IGF-1 secretion may have a therapeutic potential in the management of mitochondrial dysfunction and oxidative stress-induced neurodegeneration.</P>

Enhanced accumulation of carotenoids in sweetpotato plants overexpressing <i>IbOr-Ins</i> gene in purple-fleshed sweetpotato cultivar

Park, Sung-Chul,Kim, Sun Ha,Park, Seyeon,Lee, Hyeong-Un,Lee, Joon Seol,Park, Woo Sung,Ahn, Mi-Jeong,Kim, Yun-Hee,Jeong, Jae Cheol,Lee, Haeng-Soon,Kwak, Sang-Soo Elsevier 2015 Vol. No.

<P><B>Abstract</B></P> <P>Sweetpotato [<I>Ipomoea batatas</I> (L.) Lam] is an important root crop that produces low molecular weight antioxidants such as carotenoids and anthocyanin. The sweetpotato orange (IbOr) protein is involved in the accumulation of carotenoids. To increase the levels of carotenoids in the storage roots of sweetpotato, we generated transgenic sweetpotato plants overexpressing <I>IbOr-Ins</I> under the control of the cauliflower mosaic virus (<I>CaMV) 35S</I> promoter in an anthocyanin-rich purple-fleshed cultivar (referred to as <I>IbOr</I> plants). <I>IbOr</I> plants exhibited increased carotenoid levels (up to 7-fold) in their storage roots compared to wild type (WT) plants, as revealed by HPLC analysis. The carotenoid contents of <I>IbOr</I> plants were positively correlated with <I>IbOr</I> transcript levels. The levels of zeaxanthin were ∼12 times elevated in <I>IbOr</I> plants, whereas β-carotene increased ∼1.75 times higher than those of WT. Quantitative RT-PCR analysis revealed that most carotenoid biosynthetic pathway genes were up-regulated in the <I>IbOr</I> plants, including <I>PDS</I>, <I>ZDS</I>, <I>LCY-β</I>, <I>CHY-β</I>, <I>ZEP</I> and <I>Pftf</I>, whereas <I>LCY-ɛ</I> was down-regulated. Interestingly, <I>CCD1</I>, <I>CCD4</I> and <I>NCED,</I> which are related to the degradation of carotenoids, were also up-regulated in the <I>IbOr</I> plants. Anthocyanin contents and transcription levels of associated biosynthetic genes seemed to be altered in the <I>IbOr</I> plants. The yields of storage roots and aerial parts of <I>IbOr</I> plants and WT plants were not significantly different under field cultivation. Taken together, these results indicate that overexpression of <I>IbOr-Ins</I> can increase the carotenoid contents of sweetpotato storage roots.</P> <P><B>Highlights</B></P> <P> <UL> <LI> <I>IbOr-Ins</I> gene was transferred into purple-fleshed sweetpotato. </LI> <LI> Overexpression of <I>IbOr-Ins</I> increased carotenoid contents in storage roots. </LI> <LI> Most carotenoid biosynthetic pathway genes were up-regulated in transgenic plants. </LI> <LI> <I>CCD</I> genes were differentially induced in <I>IbOr</I> transgenic plants. </LI> </UL> </P>

Studies on Intergeneric Protoplast Fusion and Nuclear Transfer between Ganoderma Incidum and Coriolus versicolor

Park, Seol-Hee,Choi, Eung-Chil,Kim, Byong-Kak The Pharmaceutical Society of Korea 1991 Archives of Pharmacal Research Vol.14 No.3

Stable intergeneric hybrids involving allodiploid were obtained through protoplast fusion and nuclear transfer between the auxotrophic mutans of two basidiomycetes. Ganoderma lucidum and Corolus versicolor.