자료유형
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- 한국어병학회지= JOURNAL OF FISH PATHOLOGY(1)
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- 한국항공우주학회지(1)
전체 선택해제
총 154건 검색
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Effect of glucose level on chemical hypoxia- and hydrogen peroxide-induced chemokine expression in human glioblastoma cell lines
YieunJung, So-HeeAhn, SangHuiPark, Youn-HeeChoi 대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 10 Pages
대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 2017, Vol.21 No.5 6 509-518 (10 pages)
human glial cell lines. Treatment with cobalt chloride (CoCl2) and hydrogen peroxide (H2O2) significantly increased the expression levels of IL-6, IL-8, and IP-10 in a dose-dependent manner in CRT-MG and U251-MG astroglioma cells, but not in microglia cells. However, we found strikingly different patterns of expression of cytokines and chemokines between H2O2-treated CRT-MG cells cultured in low- and high-glucose medium. These results suggest that astroglioma and microglia cells exhibit distinct... -
Hydrogen peroxide attenuates refilling of intracellular calcium store in mouse pancreatic acinar cells
MiNaYoon, DongKwanKim, SeHoonKim, HyungSeoPark 대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 7 Pages
대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 2017, Vol.21 No.2 11 233-239 (7 pages)
effect of hydrogen peroxide (H2O2) on intracellular Ca2+ accumulation in mouse pancreatic acinar cells. Perfusion of H2O2 at 300 μM resulted in additional elevation of intracellular Ca2+ levels and termination of oscillatory Ca2+ signals induced by carbamylcholine (CCh) in the presence of normal extracellular Ca2+. Antioxidants, catalase or DTT, completely prevented H2O2-induced additional Ca2+ increase and termination of Ca2+ oscillation. In Ca2+-free medium, H2O2 still enhanced CCh-induced... -
Effects of hydrogen peroxide on voltage-dependent K+ currents in human cardiac fibroblasts through protein kinase pathways
HyemiBae, DongheeLee, Young-WonKim, JeongyoonChoi, HongJunLee, Sang-WookKim, TaehoKim, Yun-HeeNoh, Jae-HongKo, HyoweonBang, InjaLim 대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 10 Pages
대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 2016, Vol.20 No.3 11 315-324 (10 pages)
channels (VDKCs) that can induce apoptosis. Hydrogen peroxide (H2O2) modulates VDKCs and induces oxidative stress, which is the main contributor to cardiac injury and cardiac remodeling. We investigated whether H2O2 could modulate VDKCs in HCFs and induce cell injury through this process. In whole-cell mode patch-clamp recordings, application of H2O2 stimulated Ca2+-activated K+ (KCa) currents but not delayed rectifier K+ or transient outward K+ currents, all of which are VDKCs. H2O2-stimulated... -
Inhibition of Pacemaker Activity of Interstitial Cells of Cajal by Hydrogen Peroxide via Activating ATP-sensitive K+ Channels
SeokChoi, ShankarPrasadParajuli, HyeonSookCheong, DilliParasadPaudyal, CheolHoYeum, PyungJinYoon, JaeYeoulJun 대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 6 Pages
대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 2007, Vol.11 No.1 3 15-20 (6 pages)
To investigate whether hydrogen peroxide (H2O2) affects intestinal motility, pacemaker currents and membrane potential were recorded in cultured interstitial cells of Cajal (ICC) from murine small intestine by using a whole-cell patch clamp. In whole cell patch technique at 30oC, ICC generated spontaneous pacemaker potential under current clamp mode (I=0) and inward currents (pacemaker currents) under voltage clamp mode at a holding potential of 70 mV. When ICC were treated with H2O2 in... -
Promoting Effect of Hydrogen Peroxide on 1-Methyl-4-phenylpyridinium-induced Mitochondrial Dysfunction and Cell Death in PC12 Cells
DongHeeLee, ChungSooLee 대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 7 Pages
대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 2006, Vol.10 No.1 9 51-57 (7 pages)
The promoting effect of hydrogen peroxide (H2O2) against the cytotoxicity of 1-methyl-4-phenylpyridinium (MPP) in differentiated PC12 cells was assessed by measuring the effect on the mitochondrial membrane permeability. Treatment of PC12 cells with MPP resulted in the nuclear damage, decrease in the mitochondrial transmembrane potential, cytosolic accumulation of cytochrome c, activation of caspase-3, increase in the formation of reactive oxygen species (ROS) and depletion of GSH.... -
TASK-1 Channel Promotes Hydrogen Peroxide Induced Apoptosis
JihyunYun, SeungtaeKim, HyoweonBang 대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 5 Pages
대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 2005, Vol.9 No.1 9 63-67 (5 pages)
Hydrogen peroxide (H2O2) causes oxidative stress and is considered as an inducer of cell death in various tissues. Two-pore domain K (K2p) channels may mediate K efflux during apoptotic volume decreases (AVD) in zygotes and in mouse embryos. In the present study, we sought to elucidate linkage between K2p channels and cell death by H2O2. Thus K2p channels (TASK-1, TASK-3, TREK-1, TREK-2) were stably transfected in HEK-293 cells, and cytotoxicity assay was preformed using cell... -
Hydrogen Peroxide Prompted Lignification Affects Pathogenicity of Hemi-biotrophic Pathogen Bipolaris sorokiniana to Wheat
Ajit Poudel, Sudhir Navathz, Ramesh Chand, Vinod K. Mishra, Pawan K. Singh, Arun K. Joshi 한국식물병리학회 The Plant Pathology Journal 14 Pages
한국식물병리학회 The Plant Pathology Journal 2019, 35권 4호 1 287-300 (14 pages)
resistant and susceptible genotypes and its association with free radicals such as hydrogen peroxide (H2O2), superoxide (O2 -) and hydroxyl radical (OH-) were studied after inoculation under field conditions for two consecutive years. H2O2 significantly influenced lignin content in flag leaves, whereas there was a negative correlation among lignin and H2O2 to the Area Under Disease Progress Curve (AUDPC). The production of H2O2 was higher in the resistant genotypes than susceptible ones. The O2... -
Open Access : Hydrogen Peroxide- and Nitric Oxide-mediated Disease Control of Bacterial Wilt in Tomato Plants
한국식물병리학회 The Plant Pathology Journal 11 Pages
한국식물병리학회 The Plant Pathology Journal 2013, 29권 4호 4 386-396 (11 pages)
Reactive oxygen species (ROS) generation in tomato plants by Ralstonia solanacearum infection and the role of hydrogen peroxide (H2O2) and nitric oxide in tomato bacterial wilt control were demonstrated. During disease development of tomato bacterial wilt, accumulation of superoxide anion (O2 -) and H2O2 was observed and lipid peroxidation also occurred in the tomato leaf tissues. High doses of H2O2 and sodium nitroprusside (SNP) nitric oxide donor showed phytotoxicity to detached tomato leaves... -
Protective effect of butylated hydroxylanisole against hydrogen peroxide-induced apoptosis in primary cultured mouse hepatocytes
Geun Hye Hwang, Yu Jin Jeon, Ho Jae Han, Soo Hyun Park, Kyoung Min Baek, Woochul Chang, Joong Sun Kim, Lark Kyun Kim, You-Mie Le 대한수의학회 Journal of Veterinary Science 7 Pages
대한수의학회 Journal of Veterinary Science 2015, 제 16권 제 1호 3 17-23 (7 pages)
of a mixture of two isomeric organic compounds: 2-tert-butyl-4-hydroxyanisole and 3-tert-butyl-4-hydroxyanisole. We examined the effect of BHA against hydrogen peroxide (H2O2)-induced apoptosis in primary cultured mouse hepatocytes. Cell viability was significantly decreased by H2O2 in a dose-dependent manner. Additionally, H2O2 treatment increased Bax, decreased Bcl-2, and promoted PARP-1 cleavage in a dose-dependent manner. Pretreatment... -
Effects on G2/M Phase Cell Cycle Distribution and Aneuploidy Formation of Exposure to a 60 Hz Electromagnetic Field in Combination with Ionizing Radiation or Hydrogen Peroxide in L132 Nontumorigenic Human Lung Epithelial Cells
HeeJin, HyeEunYoon, Jae-SeonLee, Jae-KyungKim, SungHoMyung, Yun-SilLee 대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 6 Pages
대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 2015, Vol.19 No.2 6 119-124 (6 pages)
stress factor, such as ionizing radiation (IR) or H2O2, results in genomic instability in non-tumorigenic human lung epithelial L132 cells. To this end, the percentages of G2/M-arrested cells and aneuploid cells were examined. Exposure to 0.5 Gy IR or 0.05 mM H2O2 for 9 h resulted in the highest levels of aneuploidy; however, no cells were observed in the subG1 phase, which indicated the absence of apoptotic cell death. Exposure to an ELF-MF alone (1 mT or 2 mT) did not affect the percentages of... -
Contradictory Effects of Superoxide and Hydrogen Peroxide on KCa3.1 in Human Endothelial Cells
ShinkyuChoi, Hye-YoungNa, JiAeeKim, Sung-EunCho, SukHyoSuh 대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 7 Pages
대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 2013, Vol.17 No.3 1 181-187 (7 pages)
oxygen species (ROS) are generated in various cells, including vascular smooth muscle and endothelial cells, and regulate ion channel functions. KCa3.1 plays an important role in endothelial functions. However, the effects of superoxide and hydrogen peroxide radicals on the expression of this ion channel in the endothelium remain unclear. In this study, we examined the effects of ROS donors on KCa3.1 expression and the K＋ current in primary cultured human umbilical vein endothelial cells... -
The Protective Effect of Eupatilin against Hydrogen Peroxide-Induced Injury Involving 5-Lipoxygenase in Feline Esophageal Epithelial Cells
JaeChunLim, SunYoungPark, YoonjinNam, ThanhThaoNguyen, UyDongSohn 대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 8 Pages
대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 2012, Vol.16 No.5 4 313-320 (8 pages)
level of leukotriene B4 (LTB4) was also reduced by eupatilin, SB202190, SP600125, NAC, or nordihydroguaiaretic acid (a lipoxygenase inhibitor) pretreatment. H2O2 induced the activation of p38MAPK and JNK, this activation was inhibited by eupatilin. These results indicate that eupatilin may reduce H2O2-induced cytotoxicity, and 5-lipoxygenase expression and LTB4 production by controlling the p38 MAPK and JNK signaling pathways through antioxidative action in feline esophageal epithelial cells. -
GS28 Protects Neuronal Cell Death Induced by Hydrogen Peroxide under Glutathione-Depleted Condition
HwaOkLee, YuJeongByun, Kyung-OkCho, SeongYunKim, Seong-BeomLee, Ho-ShikKim, Oh-JooKwon, Seong-WhanJeong 대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 8 Pages
대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 2011, Vol.15 No.3 5 149-156 (8 pages)
by hydrogen peroxide (H2O2). GS28 siRNA-transfected cells treated with H2O2 showed a significant increase in cytotoxicity under glutathione (GSH)-depleted conditions after pretreatment with buthionine sulfoximine, which corresponded to an increase of intracellular reactive oxygen species (ROS) in the cells. Pretreatment of GS28 siRNA-transfected cells with p38 chemical inhibitor significantly inhibited cytotoxicity; we also observed that p38 was activated in the cells by immunoblot analysis. We... -
Neuroprotective Effects of Methanol Extracts of Jeju Native Plants on Hydrogen Peroxide-induced Cytotoxicity in SH-SY5Y Human Neuroblastoma Cells
Pil-JaeKong, Yu-MiKim, HeeJaeLee, Sung-SooKim, EunSookYoo, WanjooChun 대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 5 Pages
대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 2007, Vol.11 No.5 2 170-174 (5 pages)
of a wide range of medicinal plants, which are native to Jeju Island in Korea, were prepared and their protective effects on hydrogen peroxide-induced apoptotic cell death were examined. Among those tested, extracts from Smilax china and Saururus chinesis significantly decreased hydrogen peroxide-induced apoptotic cell death. The extracts attenuated hydrogen peroxide (H2O2)-induced caspase-3 activation in a dose-dependent manner. Further, plant extracts restored H2O2-induced depletion of... -
Overexpressed Mitochondrial Thioredoxin Protects PC12 Cells from Hydrogen Peroxide and Serum-deprivation
Yun-SongLee, Seung-AYu 대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 5 Pages
대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 2003, Vol.7 No.1 7 33-37 (5 pages)
Therefore, we addressed physiological role of Trx2 in PC12 cells under oxidative stress. In PC12 cells, transiently overexpressed Trx2 significantly reduced cell death induced by hydrogen peroxide, whereas mutant Trx2, having serine residues instead of two cysteine residues at the active site did not. In addition, stably expressed Trx2 protected PC12 cells from serum deprivation. These results suggest that Trx2 may play defensive roles in PC12 cells by reducing oxidative stress to mitochondria. -
Comparative Analysis of Defense Responses in Chocolate Spot-Resistant and -Susceptible Faba Bean (Vicia faba) Cultivars Following Infection by the Necrotrophic Fungus Botrytis fabae
한국식물병리학회 The Plant Pathology Journal 12 Pages
한국식물병리학회 The Plant Pathology Journal 2014, 30권 4호 3 355-366 (12 pages)
In this study, resistance responses were investigated during the interaction of Botrytis fabae with two faba bean cultivars expressing different levels of resistance against this pathogen, Nubaria (resistant) and Giza 40 (susceptible). Disease severity was assessed on leaves using a rating scale from 1 to 9. Accumulation levels of reactive oxygen species (ROS), lipid peroxidation and antioxidant enzymes (superoxide dismutase, catalase and ascorbate peroxidase) were measured in leaf tissues at... -
Cloning and characterization of a selenium-independent glutathione peroxidase (HC29) from adult Haemonchus contortus
Wei Sun, Xiaokai Song, Ruofeng Yan, Lixin Xu, Xiangrui Li* 대한수의학회 Journal of Veterinary Science 10 Pages
대한수의학회 Journal of Veterinary Science 2012, 제 13권 제 1호 8 49-58 (10 pages)
the thioredoxin-like family. Alignment of the nucleic acid and amino acid sequences of HC29 with those of the reported selenium-independent GPX of H. contortus showed that HC29 contained different types of spliced leader sequences as well as dimer interface sites, although the active sites of both were identical. Enzymatic analysis of recombinant prokaryotic HC29 protein showed activity for the hydrolysis of H2O2. These findings indicate that HC29 is a selenium-independent GPX of H. contortus. -
Cryptotanshinone inhibits TNF-α-induced LOX-1 expression by suppressing reactive oxygen species (ROS) formation in endothelial cells
XiaoliRan, WenwenZhao, WenpingLi, JingshanShi, XiupingChen 대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 9 Pages
대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 2016, Vol.20 No.4 4 347-355 (9 pages)
Cryptotanshinone (CPT) is a natural compound isolated from traditional Chinese medicine Salvia miltiorrhiza Bunge. In the present study, the regulatory effect and potential mechanisms of CPT on tumor necrosis factor alpha (TNF-α) induced lectin-like receptor for oxidized low density lipoprotein (LOX-1) were investigated. Human umbilical vein endothelial cells (HUVECs) were cultured and the effect of TNF-α on LOX-1 expression at mRNA and protein levels was determined by Real-time PCR and... -
Role of STAT3-Interacting Protein (STIP1) in Δ12-Prostaglandin J2-Induced Cell Death
Seong-MookKim, SunLee, Hwan-JongKwak, Bo-EunKim, Dong-JinKim, In-Kyung 대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 5 Pages
대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 2004, Vol.8 No.1 5 27-31 (5 pages)
Δ12-Prostaglandin J2 (Δ12-PGJ2) is one of cyclopentenone prostaglandins. The Δ 12-PGJ2 is known to induce apoptosis of tumor cells, however, it's action mechanism is not clear. It has recently been reported that STAT3 is involved in tumorigenesis. In the present study, we investigated the role of STAT3-interacting protein (STIP1) in the cytotoxicity of Δ 12-PGJ2, since STIP1 was recently reported as a modulator of STAT3 activation by specifically binding to inactive (unphosphorylated) STAT3.... -
넙치 (Paralichthys olivaceus)에서의 과산화수소;($H_{2}O_{2}$) 처리 농도가 생리.생화학적 반응에 미치는 영향
최미경, 여인규, Choe. Mi-Kyung, Yeo. In-Kyu 한국어병학회 韓國魚病學會誌= Journal of fish pathology 11 Pages
한국어병학회 韓國魚病學會誌= Journal of fish pathology 2007, Vol.20 No.3 269-279 (11 pages)
본 연구에서는 넙치(Paralichthys olivaceus)를 이용하여 과산화수소(H2O2)처리농도에 따른 체내에서의 혈액생리학적 변화, 항산화효소 및 열충격단백질(HSP)등의 변화를 조사하여 화학적 스트레스에 대한 기초자료를 제공하고자 본 실험을 수행하였다. H2O2의 실험구는 각각 0(대조구), 100, 300 및 500 ppm으로 설정하였으며, 1시간 약욕처리 후 순환시켜 1, 3 및 5시간 후에 혈액성상을 분석하였다. 그 결과, H2O2 처리에 의한 혈액성상에서의 헤마토크리트 수치인 경우에는 농도 및 시간에 의존하여 유의하게 감소되는 경향을... -
고삼 및 비트루트(Beta Vularis) 추출물의 항산화 효과 비교
정세훈 한국보건기초의학회 한국보건기초의학회지 4 Pages
한국보건기초의학회 한국보건기초의학회지 2020, Vol.13 No.2 10 118-121 (4 pages)
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Preparation and characterization of microporous NaOH activated carbons from hydrofluoric acid leached rice husk and its application for lead(II) adsorption
A. F. Hassan, A. M. Youssef 한국탄소학회 Carbon Letters 10 Pages
한국탄소학회 Carbon Letters 2014, Vol.15 No.1 8 57-66 (10 pages)
the impact of the operation conditions on the capacity for lead(II) sorption was also considered. Modification of NLC41 with H2O2 and HNO3 gave two other adsorbents, HNLC41 and NNLC41 respectively. These two new samples exhibited the highest removal capacities for lead(II), i.e.117.5 and 128.2 mg/g, respectively. The adsorption data fitted the Langmuir isotherm and the kinetic adsorption followed pseudo-second order kinetics. The thermodynamic parameters have been determined and they indicated a... -
감국(Chrysanthemum indicum L.) 추출물이 H2O2로 유도한 산화적 스트레스에서 MC3T3-E1 조골세포 기능에 미치는 영향
윤지혜, 황은선, 김건희, Yun. Jee-Hye, Hwang. Eun-Sun, Kim. Gun-Hee 한국식품과학회 한국식품과학회지 7 Pages
한국식품과학회 한국식품과학회지 2012, Vol.44 No.1 82-88 (7 pages)
감국 에탄올 추출물이 $H_2O_2$로 유도한 산화적 스트레스 상황에서 MC3T3-E1 조골세포의 증식 및 분화, ROS 생성 및 염증 매개성 cytokine인 TNF-${alpha}$ 생성 등에 미치는 영향을 분석하였다. $H_2O_2$로 유도한 산화적 스트레스 상황에서 감국 에탄올 추출물은 30-100 ${mu}g/mL$ 농도 범위에서 조골세포의 증식을 유의적으로 증가시켰다. 또한, 감국 에탄올 추출물 200 ${mu}g/mL$ 농도에서 ALP 활성이 약 1.5배 유의적인 증가를 나타냈다. 그러나 collagen 합성에는 유의적 차이를 보이지 않았다. Mineralization 측정에서는 200... -
숙지황(熟地黃)이 남성생식세포 GC-1의 항산화에 미치는 영향
박성규, 장문석, 양웅모, 유태원, 김도림, 박은화, 고은빛, 최문정, 김휴영, 오지훈, 심경준, 윤지원, Park. Seong-Kyu, Chang. Mun-Seog, Yang. Woong-Mo, Yu. Tae-Weon, Kim. Do-Rim, Park. Eu 대한본초학회 大韓本草學會誌 6 Pages
대한본초학회 大韓本草學會誌 2007, Vol.22 No.4 81-86 (6 pages)
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Physiology,Chemistry,Pharmacology,Toxicology : Oxidative Stress in C100 Cells Induced by Combined Treatment of Benzo(α)pyrene and/or 2,3,7,8-Tetrachlorodibenzo-p-dioxin(TCDD)
MiOkBae, KyungHoChoi, HuJangLee, HyunWooKim, JunSungKim, SoonKyungHwang, JinHongPark, HyunSunCho, MyungHaingCho 대한수의학회 Korean Journal of Veterinary Research(구 대한수의학회지) 9 Pages
대한수의학회 Korean Journal of Veterinary Research(구 대한수의학회지) 2004, 제 44권 제 3호 9 379-387 (9 pages)
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Effect of dihydrotestosterone on mouse embryonic stem cells exposed to H2O2-induced oxidative stress
Mi Na Lee, Sang Hun Lee, Min Young Lee, Yun Hee Kim, Jae Hong Park, Jung Min Ryu, Seung Pil Yun, Yu Jin Lee, Mi Ok Kim, Kwangsun 대한수의학회 Journal of Veterinary Science 10 Pages
대한수의학회 Journal of Veterinary Science 2008, 제 9권 제 3호 4 247-256 (10 pages)
a pure androgenic steroid. This study was conducted to examine the effect of DHT (10 M) on H2O2 (10 M) -induced injuries in mouse embryonic stem (ES) cells. H2O2 induced ROS generation and increased lipid peroxide formation and DNA fragmentation. These effects of H2O2 were inhibited by pretreatment with DHT. H2O2 also increased the phosphorylation of p38 MAPK, SAPK/JNK and nuclear factor kappa B (NF-kB), but DHT blocked these effects. Moreover, H2O2 decreased DNA synthesis and the levels of cell... -
Water Extract of Samultang Reduces Apoptotic Cell Death by H2O2-Induced Oxidative Injury in SK-N-MC Cells
GyoungWanLee, MinSunKim 대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 7 Pages
대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 2009, Vol.13 No.3 1 139-145 (7 pages)
significantly reduced apoptotic cell death induced by incubation with 30ՌM H2O2 in SK-N-MC cells. Pre-incubation with water extract of SMT for 2 h prevented the H2O2-induced decrease in mitochondrial transmembrane potential. SMT also attenuated the increase in caspase-3 activity and the breakdown of PARP protein caused by H2O2-induced oxidative stress. These results suggest that the water extract of SMT provides inhibition of apoptotic cell death against oxidative injury in SK-N-MC cells. -
MAPK Activation and Cell Viability after H2O2 Stimulation in Cultured Feline Ileal Smooth Muscle Cells
HyunJuSong, JiHoonJeong, DongKyuLee, TaiSangLee, YoungSilMin, UyDongSohn 대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 6 Pages
대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 2004, Vol.8 No.6 8 339-344 (6 pages)
by H2O2. We suggest that ERK activation induced by short-term H2O2 treatment plays a critical role in cellular protection in the early stage of response to oxidative stress. The present study suggests the necessity of identification of MAPK signaling pathways affected by ROS, since it could ultimately elucidate cellular consequences involved in initiation and perpetuation of intestinal tissue damage in the diseases such as crohn's disease and ulcerative colitis, resulted from excessive ROS. -
Fe++및 H2O2에 의한 hyaluronic acid 분해에 있어서 ascorbic acid의 역할
이정수(Jung-Soo Lee), 정명희(Myung-Hee Chung), 임정규(Jung-Kyoo Lim), 박찬웅(Chan-Woong Park), 차인준(In-Joon Cha) 대한약리학회 대한약리학잡지 17 Pages
대한약리학회 대한약리학잡지 1985, 제 21권 제 1호 6 62-78 (17 pages)
역할을 hyaluronic acid의 변성과 methional로 부터 ethylene 생성에 대한 효과로써 관찰하였다. Ascorbate는 Fe++와 H2O2에 의한 hyaluronic acid의 변성을 촉진하였으며, 이런 현상은 점성도 변화와 Sepharose 4B를 이용한 코로마토그라피에 의하여 확인할 수 있었다. 이때 관찰되는 변성은 catalase와 OH⋅ scavenger에 의하여 거의 완전히 억제 되었다. 또한 ascorbate는 Fe++와 H2O2에 의한 methional로 부터 ethylene생성을 항진시킴으로써 상기의 결과를 뒷받침 하였다. 다른 환원제들(cysteine, glutathione, NADH와 NADH와... -
Effects of Carnosine and Related Compounds on Monosaccharide Autoxidation and H2O2 Formation
BeomJunLee, KyungSunKang, SangYoonNam, JaeHakPark, YongSoonLee, YoungWonYun, MyungHaingCho 대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 11 Pages
대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 1999, Vol.3 No.3 3 251-261 (11 pages)
on monosaccharide autoxidation and H2O2 formation were investigated. The incubation of CRCs with D-glucose, D-glucosamine, and D, L-glyceraldehyde at 37oC increased the absorption maxima at 285 nm, 273 nm, and 290∼330 nm, respectively. D, L-glyceraldehyde was the most reactive sugar with CRCs. The presence of copper strongly stimulated the reaction of carnosine and anserine with D-glucose or D-glucosamine. Carnosine and anserine stimulated H2O2 formation from D-glucose autoxidation in a... -
Fe2+와 H2O2에 의한 Hyaluronic Acid, Lipid와 Collagen의 산화성 손상에 나타내는 Harmaline과 Harmalol의 영향
조인성(In-Sung Cho), 신용규(Yong-Kyoo Shin), 이정수(Chung-Soo Lee) 대한약리학회 대한약리학잡지 10 Pages
대한약리학회 대한약리학잡지 1995, 제 31권 제 3호 9 345-354 (10 pages)
Fe2+, H2O2와 ascorbic acid에 의한 cartilage collagen의 변성을 억제하였다. Superoxide dismutase에 의하여 억제되는 Fe2+의 자가산화에 따른 ferricytochrome c의 환원은 harmaline과 harmalol의 영향을 받지 않았다. 또한 이들은 H2O2에 대하여 분해작용을 나타내지 않았다. Fe2+와 H2O2의 존재하에서 OH 생성은 harmaline, harmalol과 DMSO에 의하여 억제되었다. Harmaline과 harmalol은 반응성 산소대사물인 OH 과 아마도 철이온-산소 복합체에 대한 제거작용으로써 Fe2+와 H2O2에 의한 hyaluronic acid, 지질과 콜라젠의... -
H2O2-케로신 로켓을 초기 가속장치로 갖는 새로운 램젯 추진기관
박근홍, 임하영, 권세진, Park. Geun-Hong, Lim. Ha-Young, Kwon. Se-Jin 한국항공우주학회 韓國航空宇宙學會誌 6 Pages
한국항공우주학회 韓國航空宇宙學會誌 2008, Vol.36 No.5 491-496 (6 pages)
본 연구에서는 RBCC (Rocket Based Combined Cycle)엔진이나 기존 램제트 추진기관의 초기 추력 제공에 과산화수소 가스발생기를 이용하는 새로운 추진시스템을 제안하였고, 기초 연구 수행으로서 촉매 분해된 과산화수소 제트에 케로신을 분사하여 자연발화 및 연소 특성을 연구하였다. 과산화수소는 촉매 베드를 통하여 분해된 후 축소노즐을 통해 연소실로 분사됐으며 이 제트에 인젝터를 통하여 수직으로 케로신을 액상으로 분무하였다. 연소실내에서의 온도와 압력을 측정하여 점화를 확인하고 자연발화 특성을 조사하였다. 400°C의... -
Hepatoma 세포주에서 H2O2 처리에 의한 Cu/Zn SOD의 발현
김영민, 서원숙, Kim. Young-Min, Seo. Won-Sook 한국생명과학회 생명과학회지 5 Pages
한국생명과학회 생명과학회지 2007, Vol.17 No.2 230-234 (5 pages)
생체는 산소를 소비하는 대사 과정 중에 초산화물(superoxide, $O_{2}$), 과산화수소($H_2O_2$), 수산 라디칼(OH)과 같은 다양한 활성산소(reactive oxygen)들을 생성하게 되며, 그 중에서도 hydrogen peroxide ($H_2O_2$)는 biological membrane을 자유롭게 통과하며, 세포내에서 hydroxyl radical 등의 반응성이 큰 활성 산소종(reactive oxygen species, ROS)을 발생시키는 작용을 하는 강력한 산화제이다. 세포를 계대 배양 (5, 15, 25, 35 passage)하여 $H_2O_2$를 농도별(100 ${mu}M$, 500 ${mu}M$, 1 mM, 5 mM)로 처리하고, 또한... -
Horseradish peroxidase가 변성된 탄소복합 바이오센서 개발 및 전기화학적 H2O2분석
박덕수, Park. Deog-Su 대한화학회 대한화학회지 6 Pages
대한화학회 대한화학회지 2012, Vol.56 No.5 571-576 (6 pages)
Horseradish peroxidase (HRP), alkoxysilane인 TEOS의 겔 용액과 graphite를 혼합하여, 전기전도성을 나타내고 재사용이 가능하며 안정성을 향상시킨 carbon composite electrodes (CCEs) 바이오센서를 제작하였다. TEOS의 졸-겔 전이반응을 이용하여 HRP를 silicate gel network포획시킨 바이오센서는 -0.2 V에서 $H_2O_2$의 환원이 시작되었으며, HRP의 함량과 pH를 변화시켜 최적 분석 조건을 구하였다. 분석 최적 조건에서 검량선 및 검출한계를 구한 결과, 0.2~2.2 mM의 $H_2O_2$ 농도 범위에서 직선적인 감응을 나타내며... -
Reactive oxygen species-mediated unfolded protein response pathways in preimplantation embryos
Ihsan Ali, Syed Zahid Ali Shah, Yi Jin, Zhong-Shu Li, Obaid Ullah, Nan-Zhu Fang 대한수의학회 Journal of Veterinary Science 9 Pages
대한수의학회 Journal of Veterinary Science 2017, 제 18권 제 1호 1 1-9 (9 pages)
Excessive production of reactive oxygen species (ROS) and endoplasmic reticulum (ER) stress-mediated responses are critical to embryonic development in the challenging in vitro environment. ROS production increases during early embryonic development with the increase in protein requirements for cell survival and growth. The ER is a multifunctional cellular organelle responsible for protein folding, modification, and cellular homeostasis. ER stress is activated by a variety of factors including... -
Stanniocalcin-1 protects bovine intestinal epithelial cells from oxidative stress-induced damage
Li-ming Wu, Rui Guo, Lin Hui, Yong-gang Ye, Jing-mei Xiang, Chun-yun Wan, Miao Zou, Rui Ma, Xiao-zhuan Sun, Shi-jin Yang, Ding-z 대한수의학회 Journal of Veterinary Science 9 Pages
대한수의학회 Journal of Veterinary Science 2014, 제 15권 제 4호 3 475-483 (9 pages)
to hydrogen peroxide (H2O2) for different time intervals to mimic chronic enteritis-induced cellular damage. Prior to treatment with 200 μM H2O2, the cells were transfected with a recombinant plasmid for 48 h to over-express STC-1. Acridine orange/ ethidium bromide (AO/EB) double staining and trypan blue exclusion assays were then performed to measure cell viability and apoptosis of the cells, respectively. The expression of STC-1 and apoptosis-related proteins in the cells was monitored by...
