보리순의 영양성분 조성

서혜지,최용민,김상천,이준수,이기택,정명근,천지연,황진봉,남진식,서우덕,황영,김행란,김세나 忠北大學校 農業科學硏究所 2015 農業科學硏究 Vol.31 No.2

동진강 정읍천 유역 오염부하량 평가

이경보,김종천,박지혜,이덕배,김종구 한국환경농학회 2004 한국환경농학회지 Vol.23 No.1

하천 수질관리 대안을 제시하고자 동진강에 영향을 가장 크게 미치는 정읍천을 대상으로 2002년 1월부터 2003년 12월까지 점 및 비점 오염원으로부터 수질오염물질의 부하량, 유출 경로 등을 평가하였다. 계절별 수질 변화는 pH 범위가 6.87∼7.53으로 봄의 pH 범위가 컸으 며, EC 농도는 정읍천 중류가 높았으며, 상류유역은 83∼95㎲/㎝ 범위를 나타냈고, 계절별로 가을에 517㎲/㎝로 가장 높았다. BOD의 농도는 상류유역에서 0.61∼1.27 ㎎/L로 Ⅰ급수 수 질은 나타내었으나, 중류와 하류에서는 Ⅲ등급 수준이었다. T-N의 농도는 정읍천 중류 유 역이 6.10∼10.84㎎/L로 가장 높았고, T-P의 농도는 타오염물질에 비해 농도의 편차가 컸으 며, 특히 중류에서 T-P의 농도가 0.41∼0.98 ㎎/L로 높았다. BOD의 배출부하량은 J4 유역에서 553 ㎎/day로 가장 많았고 T-N 발생부화량은 가축, 인 구, 토지이용, 산업의 순으로 컸으며, T-N 배출부하량은 인구 및 산업에 의한 것은 J4 유역, 가축과 토지이용에 의한 부하량은 J5, J6유역에서 높았다. T-N의 유달부하량은 하류 유역에 서 높았으며, T-P의 유달 부하량은 BOD, T-N에 비하여 유달부하량이 낮았고 유달율은 6∼38% 범위를 나타냈다. The influence of pollutant loads on the water quality in Jeongeupcheon of Dongjin river was evaluated from Jan. 2002 to Dec. 2003 for two years. The range of pH in water was 6.87-753. The EC level in upstream ranged from 83 to 95 us/cm with the highest value in autumn. The BOD level in upstream ranged from 0.61 to 1.27 ㎎/L, which would be Ⅰ grade according to water quality criteia by Ministry of Environment, but that in downstream was Ⅲ grade. The average T-N level in midstream range from 6.10 to 10.84㎎/L which was the highest values throughout the stretch of the river. The average T-P levels ranged from 0.41mg to 0.98㎎/L. Jeongeupcheon was suitable for the agricultural usage based upon one year analysis of river water quality. The effluent loads of BOD was high in midstream(J4) with 553 ㎏/day. The major sources of T-N loads were livestock, population, land use, and industry in order. The effluent loads of T-N was high in J4 by population and industry while that of T-N was high in J5 and J6 by livestock and land use. The delivered loads of T-N was high in downstream. The delivered loads of T-P was low as compared with those of BOD and T-N. The delivery ration of T-N ranged from 6 to 38%.

한국 정상인에서 연령에 따른 뇌혈류분포와 혈류예비능의 변화 : Tc-99m HMPAO SPECT 에 의한 연구

문대혁,이희경,송호천,이재태,범희승,손혜경,정환정,민정준,김지열 대한핵의학회 1999 핵의학 분자영상 Vol.33 No.3

Purpose: The aim of this study was to evaluate the normal values of regional cerebral blood flow (rCBF) and cerebrovascular reserve (CVR) in normal children to aged volunteers using Tc-99m HMPAO. Materials and Methods: Thirty four right-handed normal volunteers (20 males, 14 females, mean age 40.3±24.9 years, range 4 to 82 years) were underwent rest/acetazolamide (ACZ) brain SPECT using Tc-99m HMPAO and the sequential injection and subtraction method. rCBF was estimated on the basis of a semiquantitative approach by means of right/left ratio, region/cerebellum and region to whole brain ratios in frontal, parietal, temporal, and occipital lobes, basal ganglia, thalami, and cerebellum. CVR was measured by means of % perfusion increase calculated as % mean count change compared to rest rCBF in each regions. Results: Mean values of right to left ratios range from 1.004 to 1.018. rCBF was highest in cerebellum and lowest in basal ganglia and thalami. Frontal and temporal rCBF decreased while occipital and thalami rCBF increased according to age. No sexual difference of rCBF was noted. Mean CVR was 29.9±12.9%. Mean CVR significantly increased to late teens, and declined thereafter. After 6th decade, CVR in both frontal lobes, left parietal lobe and right basal ganglia decreased significantly with advancing age. There was no sexual difference of CVR. Conclusion: Quantitative assessment of CVR was possible by ACZ Tc-99m HMPAO brain SPECT. It revealed that rCBF and CVR changed according to age in normal Korean volunteers. There was no sexual difference.

Pyruvate Kinase M2 : A Novel Biomarker for the Early Detection of Acute Kidney Injury

Ji Hyun Cheon,Sun Young Kim,Ji Yeon Son,Ye Rim Kang,Ji Hye An,Ji Hoon Kwon,Ho Sub Song,Aree Moon,Byung Mu Lee,Hyung Sik Kim 한국독성학회 2016 Toxicological Research Vol.32 No.1

The identification of biomarkers for the early detection of acute kidney injury (AKI) is clinically important Acute kidney injury (AKI) in critically ill patients is closely associated with increased morbidity and mortality. Conventional biomarkers, such as serum creatinine (SCr) and blood urea nitrogen (BUN), are frequently used to diagnose AKI. However, these biomarkers increase only after significant structural damage has occurred. Recent efforts have focused on identification and validation of new noninvasive biomarkers for the early detection of AKI, prior to extensive structural damage. Furthermore, AKI biomarkers can provide valuable insight into the molecular mechanisms of this complex and heterogeneous disease. Our previous study suggested that pyruvate kinase M2 (PKM2), which is excreted in the urine, is a sensitive biomarker for nephrotoxicity. To appropriately and optimally utilize PKM2 as a biomarker for AKI requires its complete characterization. This review highlights the major studies that have addressed the diagnostic and prognostic predictive power of biomarkers for AKI and assesses the potential usage of PKM2 as an early biomarker for AKI. We summarize the current state of knowledge regarding the role of biomarkers and the molecular and cellular mechanisms of AKI. This review will elucidate the biological basis of specific biomarkers that will contribute to improving the early detection and diagnosis of AKI.

Pyruvate Kinase M2: A Novel Biomarker for the Early Detection of Acute Kidney Injury

Cheon, Ji Hyun,Kim, Sun Young,Son, Ji Yeon,Kang, Ye Rim,An, Ji Hye,Kwon, Ji Hoon,Song, Ho Sub,Moon, Aree,Lee, Byung Mu,Kim, Hyung Sik Korean Society of ToxicologyKorea Environmental Mu 2016 Toxicological Research Vol.32 No.1

The identification of biomarkers for the early detection of acute kidney injury (AKI) is clinically important. Acute kidney injury (AKI) in critically ill patients is closely associated with increased morbidity and mortality. Conventional biomarkers, such as serum creatinine (SCr) and blood urea nitrogen (BUN), are frequently used to diagnose AKI. However, these biomarkers increase only after significant structural damage has occurred. Recent efforts have focused on identification and validation of new noninvasive biomarkers for the early detection of AKI, prior to extensive structural damage. Furthermore, AKI biomarkers can provide valuable insight into the molecular mechanisms of this complex and heterogeneous disease. Our previous study suggested that pyruvate kinase M2 (PKM2), which is excreted in the urine, is a sensitive biomarker for nephrotoxicity. To appropriately and optimally utilize PKM2 as a biomarker for AKI requires its complete characterization. This review highlights the major studies that have addressed the diagnostic and prognostic predictive power of biomarkers for AKI and assesses the potential usage of PKM2 as an early biomarker for AKI. We summarize the current state of knowledge regarding the role of biomarkers and the molecular and cellular mechanisms of AKI. This review will elucidate the biological basis of specific biomarkers that will contribute to improving the early detection and diagnosis of AKI.

Novel Mutation of SLC26A3 Gene Observed in Congenital Chloride Diarrhea

Ji Hye Cheon,Na Li Yu,Na Mi Lee 대한신생아학회 2023 Neonatal medicine Vol.30 No.3

Congenital chloride diarrhea (CLD) is a rare autosomal recessive disease caused by mutations in the solute carrier family 26 member 3 (SLC26A3) gene on chromosome 7q31. Affected neonates are vulnerable to dehydration, electrolyte imbalance in the form of hyponatremia, metabolic alkalosis, failure to thrive, or even death if left untreated. Genetic testing for mutations should be considered if the clinical diagnosis remains uncertain because early diagnosis and appropriate management are critical to the disease course in CLD. Several mutations have been reported in Korean patients with CLD, with the most common being the c.2063-1G>T mutation. Here, we report the case of a neonate with prenatally suspected CLD with confirmed novel mutations in the SLC26A3 gene (c.2147C>G; p.Ala716Gly).

Lipopolysaccaride로 유도된 Raw 264.7 세포에서 큰열매모자반 에탄올 추출물의 항염증 활성

천지민(Ji Min Cheon),김향숙(Hyang Suk Kim),최은옥(Eun Ok Choi),권다혜(Da Hye Kwon),최영현(Yung Hyun Choi),김병우(Byung Woo Kim),황혜진(Hye Jin Hwang) 한국생명과학회 2017 생명과학회지 Vol.27 No.12

본 연구에서는 갈조류인 큰열매모자반 에탄올 추출물(Ethanol extract of Sargassum Macrocarpum, EESM)의 항염증 활성을 조사하였다. Lipopolysaccharide (LPS)로 염증이 유도된 RAW 264.7 대식세포에서 EESM에 의한 항염증 효과를 조사한 결과 EESM은 nitric oxide (NO)와 prostaglandin E2 (PGE2)의 분비를 억제하는 결과를 보였고, 이는 inducible NO synthase (iNOS)와 cyclooxygenase-2 (COX-2)의 발현 역시 억제하였다. 또한 전염증성 사이토카인인 tumor necrosis factor-alpha (TNF-α)와 interleukin 1 beta (IL-1β)의 발현도 억제하였다. 이러한 염증반응이 어떤 신호경로를 통해 일어나는지 알아보기 위해 nuclear factor kappa B (NF-ĸB), phosphoinositide-3-kinase (PI3K)/Akt 그리고 mitogen-activated protein kinases (MAPKs) 신호전달 경로를 조사한 결과 EESM에 의해 NF-ĸB가 세포질에서 핵으로 이동과 Akt 단백질의 인산화가 억제되었고 MAPK에 속하는 kinase 중 ERK의 단백질 인산화가 억제되었다. 따라서 EESM이 NF-ĸB 신호계를 포함한 PI3K/Akt 및 MAPK/ERK 신호경로를 동시에 관여하고 있음을 알 수 있었다. 또한 heme oxygenase-1 (HO-1)과 그 전사 인자인 nuclear factor-E2-related factor 2 (Nrf2)의 단백질 발현에 미치는 영향을 분석한 결과 EESM에 의해 HO-1 및 Nrf2의 발현이 증가됨을 보였다. 본 연구 결과 EESM은 높은 항염증 활성을 갖는 것으로 확인되였으며 향후 잠재적인 기능성 소재로서 유용하게 활용될 수 있을 것으로 사료된다. Sargassum macrocarpum is a widely distributed marine brown algae found in the North Pacific. The objective of this study was to evaluate the anti-inflammatory activity of an ethanol extract of S. macrocarpum (EESM). First, we investigated the anti-inflammatory activities of EESM in lipopolysaccharide (LPS)-stimulated RAW 264.7 macrophages. EESM treatment suppressed nitric oxide (NO) and prostaglandin E2 (PGE2) production and inhibited the expressions of the inducible nitric oxide synthase (iNOS) and cyclooxygenase-2 (COX-2) at the mRNA and protein levels. In addition, the expression of pro-inflammatory cytokines, such as tumor necrosis factor-α (TNF-α) and interleukin-1 beta (IL-1β), was decreased in a dose dependent manner. Investigation of the signaling pathways of nuclear factor kappa B (NF-ĸB), phosphoinositide-3-kinase (PI3K)/Akt, and mitogen-activated protein kinases (MAPKs) revealed suppression of NF-ĸB translocation from the cytosol to nucleus by EESM treatment. The phosphorylation of the Akt and ERK proteins was also inhibited by EESM treatment. EESM treatment also stimulated the expression of the heme oxygenase-1 (HO-1) enzyme and its upstream transcription factor, nuclear factor-E2-related factor 2 (Nrf2). These results suggest that EESM has anti-inflammatory activity and could have potential uses in the field of nutraceuticals.

Coexistence of Radiation-Induced Meningioma and Moyamoya Syndrome 10 Years after Irradiation against Medulloblastoma: a Case Report

Han, Ji Yeon,Choi, Jung Won,Wang, Kyu-Chang,Phi, Ji Hoon,Lee, Ji Yeoun,Chae, Jong-Hee,Park, Sung-Hye,Cheon, Jung-Eun,Kim, Seung-Ki KOREAN ACADEMY OF MEDICAL SCIENCE 2017 JOURNAL OF KOREAN MEDICAL SCIENCE Vol.32 No.11

<P>Radiotherapy is one of the standard treatments for medulloblastoma. However, therapeutic central nervous system irradiation in children may carry delayed side effects, such as radiation-induced tumor and vasculopathy. Here, we report the first case of coexisting meningioma and moyamoya syndrome, presenting 10 years after radiotherapy for medulloblastoma. A 13-year-old boy presented with an enhancing mass at the cerebral falx on magnetic resonance imaging (MRI) after surgery, radiotherapy (30.6 Gy craniospinal axis, 19.8 Gy posterior fossa) and chemotherapy against medulloblastoma 10 years ago, previously. The second tumor was meningioma. On postoperative day 5, he complained of right-sided motor weakness, motor dysphasia, dysarthria, and dysphagia. MRI revealed acute cerebral infarction in the left frontal lobe and both basal ganglia. MR and cerebral angiography confirmed underlying moyamoya syndrome. Four months after the meningioma surgery, the patient presented with headaches, dysarthria, and dizziness. Indirect bypass surgery was performed. He has been free from headaches since one month after the surgery. For patients who received radiotherapy for medulloblastoma at a young age, clinicians should consider the possibility of the coexistence of several complications. Careful follow up for development of secondary tumor and delayed vasculopathy is required.</P>

주어부의 생물성에 따른 문장 오류 판단과제의 노년층 및 청년층 간 ERP 성분 비교

전지혜(Ji-Hye Cheon),성지은(Jee Eun Sung) 한국장애인재활협회 2019 재활복지 Vol.23 No.4

본 연구는 사건 관련 전위(Event-related brain potentials, ERP)실험을 통해 주어부의 생물성에 따른 문장 오류 판단과제의 정상 노년층 및 청년층간 문장 처리 과정에서 나타나는 차이를 알아보는 것을 목적으로 하였다. 노년층 17명, 청년층 20명이 본 연구에 참여하였다. 연구 과제는 3가지 조건으로 (1) 오류 없는 문장, (2) 생물성 주어 오류 문장, (3) 무생물성 주어 오류 문장으로 구성되었다. 주어부의 생물성에 따른 문장 오류 판단과제의 연구 결과는 다음과 같다. 문장 오류 판단과제에서 노년층은 청년층보다 낮은 정확도와 느린 반응시간을 보였다. ERP 성분 분석 결과, 200-500ms 구간의 목적어에서는 생물성 주어 오류 문장, 서술어에서는 무생물성 주어 오류 문장에서 N400 성분이 관찰되었다. 500-800ms 구간에서는 의미관련 P600 성분 및 서술어에서는 N400 성분 지속 파형이 나타났다. 이러한 연구 결과는 문장 오류 유형에 따른 집단 간 차이가 있었으며, N400 성분과 P600 성분 진폭 크기 차이가 청년층에 비해 노년층에서 모두 확연하게 감소되어 나타났다. 이는 문장 처리 능력은 노화에 따라 노년층이 청년층에 비해 언어 처리 능력에 있어 약화와 지연이 나타나는 것을 의미하며 이것은 표면적으로 발현되는 정반응률 감소나 반응시간 지연의 원인이 될 수 있음을 시사한다. The purpose of this study is to examine effects of animacy hierarchy on sentence processing in Korean speaking normal elderly adults and younger controls. Animacy hierarchy was manipulated using animate(human),animate(animals) and inanimate categories on the first Noun Pharse(NP1) in a subject position of a sentence. The current study investigated the effects of animacy manipulation in the first noun phrases on real-time sentence processing using Event-Related Potential(ERP) paradigm. A total of 37 individuals (elderly adults=17 and younger group=20) participated in the study. NP1 was systematically manipulated based on the animacy hierarchy:1)non-violation condition with human animate NP1, 2)animate subject-violation with animal NP1,and 3)inanimate subject-violation with inanimate NP1. Event-Related Potential(ERP)paradigm was employed to examine the effects. Results from the behavioral analyses reveald that the elderly group showed lower accuracy and slower response times(RT) than the young group. ERP analyses demonstrated that N400 emerged in animate subject violation condition for NP2 and inanimate subject violation condition for the verbs. P600 component was observed in inanimate subject violation condition for NP2, whereas sustaind negativity was observed in inanimate-subject violation condition for the verb. The results suggest that manipulation of animacy clue may serve as a critical linguistic feature to elicit aging-related changes in online sentence processing between younger and elderly adults.

Crude extract of Ceriporia lacerata has a protective effect on dexamethasone-induced cytotoxicity in INS-1 cells via the modulation of PI3K/PKB activity.

Kim, Ji-Hye,Park, Yu-Kyoung,Kim, Ji-Eun,Lee, Sam-Pin,Kim, Byoung-Cheon,Jang, Byeong-Churl D.A. Spandidos 2013 INTERNATIONAL JOURNAL OF MOLECULAR MEDICINE Vol.32 No.1

<P>Excessive and/or long-term glucocorticoid therapy reduces β-cell mass and induces hyperglycemia, which contribute to the development of steroid?induced diabetes. Ceriporia (C.) lacerata is one of the white?rot fungi and has been used in bioremediations, such as lignocellulose degradation, in nature. The pharmacologic effect of C. lacerata on steroid-induced β-cell toxicity is not known. In this study, we evaluated the effect of a crude extract from a submerged cultivation of C. lacerata on the survival and apoptosis of INS-1 rat insulin-secreting cells exposed to dexamethasone (Dex), a synthetic diabetogenic glucocorticoid. Treatment with the C. lacerata crude extract (CLCE) largely blocked the Dex-induced reduction in survival and apoptosis of INS-1 cells. Moreover, CLCE treatment inhibited Dex-induced protein kinase B (PKB) dephosphorylation without affecting Dex-induced extracellular signal-regulated protein kinase-1/2 dephosphorylation and MKP-1 upregulation. Importantly, the protective effect of CLCE on Dex-induced cytotoxicity in INS-1 cells was attenuated by LY294002, an inhibitor of PI3K/PKB. CLCE treatment, however, did not protect the INS-1 cells from the cytotoxic effects triggered by other insults, such as interleukin-1β (an inflammatory cytokine), streptozotocin (a diabetogenic drug), thapsigargin (a calcium mobilizing agent), and tunicamycin (an ER stress inducer). Collectively, these findings demonstrate for the first time the ability of CLCE to specifically protect INS-1 cells from Dex-induced cytotoxicity through the modulation of the PI3K/PKB pathway. It is suggested that CLCE may be applied for the prevention and/or treatment of steroid diabetes in which reduction of β-cell survival and induction of β-cell apoptosis play pathogenic roles.</P>