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Glycyrrhizin Attenuates MPTP Neurotoxicity in Mouse and MPP+-Induced Cell Death in PC12 Cells
YunJeongKim, ChungSooLee 대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 8 Pages
대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 2008, Vol.12 No.2 5 65-72 (8 pages)
inhibitory effect declined. Glycyrrhizin and 18Ղ-glycyrrhetinic acid attenuated the hydrogen peroxide- or nitrogen species-induced cell death. Results from this study indicate that glycyrrhizin may attenuate brain tissue damage in mice treated with MPTP through inhibitory effect on oxidative tissue damage. Glycyrrhizin and 18Ղ-glycyrrhetinic acid may reduce the MPP+ toxicity in PC12 cells by suppressing caspase-3 activation. The effect seems to be ascribed to the antioxidant effect. -
Effects of Antioxidants on the Gamma-Radiation Damage of the Cultured Vascular Smooth Mucle Cells of Rat Aorta
Jong-DooLee, Hyoung-ChulChoi, Young-JinKang, Myung-SeKim, Kwang-YounLee 대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 7 Pages
대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 2007, Vol.11 No.5 5 189-195 (7 pages)
To study the protective effects of antioxidants on the radiation damages of the cells, vascular smooth muscle cells (VSMC) from thoracic aorta of Sprague-Dawley rats were cultured and irradiated with gamma-ray. Cell viability was measured by direct cell counting and MTT assay, and flow cytometry was performed to measure fractional distributions of the cells. Gamma-ray irradiation inhibited cell proliferations accompanied with decreased G1 phase and increased S- and G2/M phases, and the maximum... -
Identification of Differentially Expressed Genes in Murine Hippocampus by Modulation of Nitric Oxide in Kainic Acid-induced Neurotoxic Animal Model
YoAhnSuh, OMinKwon, SoYoungYim, HeeJaeLee, Sung-SooKim 대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 6 Pages
대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 2007, Vol.11 No.4 3 149-154 (6 pages)
Kainic acid (KA) causes neurodegeneration, but no consensus has been reached concerning its mechanism. Nitric oxide may be a regulator of the mechanism. We identified differentially expressed genes in the hippocampus of mice treated with kainic acid, together with or without L-NAME, a nonselective nitric oxide synthase inhibitor, using a new differential display PCR method based on annealing control primers. Eight genes were identified, including clathrin light polypeptide, TATA element... -
Gene Expression Profile in Microglia following Ischemia- Reperfusion Injury
JuHyeonOh, HyungSooHan, JaeSikPark 대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 8 Pages
대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 2006, Vol.10 No.4 2 173-180 (8 pages)
response have been identified individually, but not systematically. In this regards, the microarray system permitted to screen a large number of genes in biological or pathological processes. Therefore, we used microarray technology to evaluate the effect of oxygen glucose deprivation (OGD) and reperfusion on gene expression in microglia under ischemia-like and activating conditions. Primary microglial cultures were prepared from postnatal mice brain. The cells were exposed to 4 hrs of OGD and 1... -
Inhibition of DNA-dependent Protein Kinase by Blocking Interaction between Ku Complex and Catalytic Subunit of DNA-dependent Protein Kinase
Chung-HuiKim, DangVanCuong, Jong-SuKim, NariKim, EuiyongKim, JinHan 대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 6 Pages
대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 2003, Vol.7 No.1 3 9-14 (6 pages)
arrest. Our ultimate goal is to develop a treatment of breast tumors by targeting proteins involved in damage-signaling pathway and/or DNA repair. This would greatly facilitate tumor cell cytotoxic activity and programmed cell death through DNA damaging drug treatment. Therefore, we designed a domain of Ku80 mutants that binds to Ku70 but not DNA end binding activity and used the peptide in co-therapy strategy to see whether the targeted inhibition of DNA-PK activity sensitized breast cancer... -
Enhancement of Cyclosporine-Induced Oxidative Damage of Kidney Mitochondria by Iron
Yoon-YoungJang, Eun-SookHan, Chung-SooLee, Young-KiKim, Jin-HoSong, Yong-KyooShin 대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 10 Pages
대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 1999, Vol.3 No.6 12 631-640 (10 pages)
The present study investigated the stimulatory effects of iron (or ascorbate) on cyclosporine-induced kidney mitochondrial damage. Damaging effect of 50 μM cyclosporine plus 20 μM Fe2 on mitochondrial lipids and proteins of rat kidney and hyaluronic acid was greater than the summation of oxidizing action of each compound alone, except sulfhydryl oxidation. Cyclosporine and 100 μM ascorbate showed an enhanced damaging effect on lipids but not on proteins. The peroxidative action of... -
Protective Mechanism of Nitric Oxide and Mucus against Ischemia/ Reperfusion-Induced Gastric Mucosal Injury
HyeyoungKim, KwangsooNam, KyungHwanKim 대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 9 Pages
대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 1998, Vol.2 No.4 13 511-519 (9 pages)
This study investigated the role of nitric oxide on the oxidative damage in gastric mucosa of rats which received ischemia/reperfusion and its relation to mucus. Nitric oxide synthesis modulators such as L-arginine and NG-nitro-L-arginine methyl ester, and sodium nitroprusside, a nitric oxide donor, were injected intraperitoneally to the rats 30 min prior to ischemia/reperfusion which was induced by clamping the celiac artery and the superior mesenteric artery for 30 min and reperfusion for 1... -
Hypoxia/Reoxygenation과 Acidosis가 위선세포에서 위산분비와 NO Synthase 활성에 미치는 영향
김혜영(Hye-young Kim), 김경환(Kyung Hwan Kim) 대한약리학회 대한약리학잡지 10 Pages
대한약리학회 대한약리학잡지 1995, 제 31권 제 1호 8 75-84 (10 pages)
NO의 위산분비에 대한 작용을 규명하기 위하여 분리한 토끼위선세포에서 hypoxia/reoxygenation과 acidosis후 위산분비와 NO synthase 활성을 측정하였다. 분리한 위선세포에 30분의 hypoxia와 1시간의 reoxygenation을 주었으며, acidosis를 위하여 배지의 pH를 6.0과 4.0으로 변화시켜 실험하였다. 위산분비는 위선세포 내와 외의 [14C]-aminopyrine 축적비율로 측정하였으며, NO synthase 활성은 NO의 전구물질인 [14C]L-arginine으로부터 [14C]-citrulline으로의 전환율로 결정하였다. 결과로서 dibutyryl cAMP는 농도 의존적으로... -
허혈재-관류 적출심장에서 Arachidonic Acid에 의한 산소래디칼 생성 및 심근손상에 대한 Cyclobuxine의 영향
이종화(Jong Hwoa Lee), 권준택(Jun Tack Kwon), 조병헌(Byung Heon Cho), 박종안(Jong An Park), 김유재(Yu Jae Kim), 김종배(Jong Bae Kim), 차영덕(Young Deog Cha 대한약리학회 대한약리학잡지 8 Pages
대한약리학회 대한약리학잡지 1992, 제 28권 제 2호 5 163-170 (8 pages)
흰쥐의 허혈-재관류 적출심장에서 arachidonic acid의 투여에 의해 촉진된 superoxide anion의 생성과 심근손상에 대한 cyclobuxine (스테로이드성 알카로이드)의 영향을 관찰하였다. 적출심장을 Langendorff 관류장치에 현수하고 0.5 ml/min의 저용량으로 45분간 관류한 후 정상관류 (7ml/min)로 복귀시켜 허혈-재관류 심장으로 사용하였다. 재관류 시 arachidonate (0.1과 1.0μg/ml)를 투여한 후 superoxide anion의 생성을 관찰하였고, 좌심실 내의 지질 과산화정도는 MDA의 량으로 측정하였으며, 심근손상의 지표로 lactic... -
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)
Hydroxyl raical(OH⋅)을 생성하는 것으로 알려진 iron-catalyzed Haber-Weiss rocation에서 superoxide anion (O2-⋅)은 주로 Fe+++을 Fe++로 환원시키는 데에 작용하는 것으로 추정하고 있다. 이러한 OH⋅ 의 역할은 다른 환원제들에 의하여 대체가 가능할 것으로 추측되며 생물계의 환원제의 하나로써 ascorbate가 관심의 대상이 되고 있다. 이에 따라 본 연구에서는 Fe++와 H2O2 존재하에서 OH⋅ 을 생성하는 ascorbate 의 역할을 hyaluronic acid의 변성과 methional로 부터 ethylene 생성에 대한 효과로써...


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