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Inhibition of Hypoxia-induced Apoptosis in PC12 Cells by Estradiol
JiYeonJung, KwangHoonRoh, YeonJinJeong, SunHunKim, EunJuLee, MinSeokKim, WonMannOh, HeeKyunOh, WonJaeKim 대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 8 Pages
대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 2005, Vol.9 No.4 7 231-238 (8 pages)
increase in the release of cytochrome c from mitochondria into cytoplasm and Fas-ligand (Fas-L) upregulated by CoCl2. These results suggest that CoCl2 induce apoptosis in PC12 cells through both mitochondria- and death receptor-mediated cell death pathway. Estradiol was found to have a neuroprotective effect against CoCl2-induced apoptosis through the inhibition of ROS production and by modulating apoptotic effectors associated with the mitochondria- and death-dependent pathway in PC12 cells. -
Inhibition of Sarcoplasmic Reticulum Ca2+ Uptake by Pyruvate and Fatty Acid in H9c2 Cardiomyocytes: Implications for Diabetic Cardiomyopathy
EunHeeLee, HyeKyungLee, HaeWonKim, Young-HoonKim 대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 8 Pages
대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 2005, Vol.9 No.4 2 195-202 (8 pages)
to the effects of high glucose. These effects were accompanied with decreased glucose utilization. However, pyruvate could not further suppress SR Ca2-uptake in cells cultured in high glucose condition. Enhanced entry of pyruvate into mitochondria by dichloroacetate, an activator of pyruvate dehydrogenase complex, also induced suppression of SR Ca2-uptake, indicating that mitochondrial uptake of pyruvate is required in the SR dysfunction induced by pyruvate or glucose. On the other... -
The Effect of Ghrelin on Ca2+ Concentration in Thyroid FRTL-5 Cells
ByungJooKim, YoungJooPark, DoJoonPark, InsukSo, KiWhanKim 대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 6 Pages
대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 2004, Vol.8 No.4 4 195-200 (6 pages)
Ghrelin is a newly discovered peptide, which is released from the stomach and neurons in the hypothalamic arcuate nucleus (ARC), and potently stimulates growth hormone release and food intake. In the present study, we investigated the effect of ghrelin on [Ca2]i in thyroid FRTL-5 cells. Ghrelin (5 nM) increased [Ca2]i and TSH (1 unit/l) had an additive effect on [Ca2]i when extracellular normal solution was 1.1mM Ca2 containing Coon's modified Ham's F12 medium. When... -
Kinesin Superfamily KIF5 Proteins Bind to βIII Spectrin
Jae-EunPaik, NariKim, SungSuYea, WonHeeJang, Joon-YoungChung, Sang-KyoungLee, Yeong-HongPark, JinHan, Dae-HyunSeog 대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 6 Pages
대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 2004, Vol.8 No.3 8 167-172 (6 pages)
The kinesin proteins (KIFs) make up a large superfamily of molecular motors that transport cargo such as vesicles, protein complexes, and organelles. KIF5 is a heterotetrameric motor that conveys vesicles and plays an important role in neuronal function. Here, we used the yeast two-hybrid system to identify the neuronal protein(s) that interacts with the tail region of KIF5 and found a specific interaction with βIII spectrin. The amino acid residues between 1394 and 1774 of βIII spectrin were... -
Nitric Oxide-cGMP-Protein Kinase G Pathway Contributes to Cardioprotective Effects of ATP-Sensitive K+ Channels in Rat Hearts
DangVanCuong*, NariKim*, HeeCheolCho, EuiyongKim, JinHan 대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 6 Pages
대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 2004, Vol.8 No.2 5 95-100 (6 pages)
Ischemic preconditioning (IPC) has been accepted as a heart protection phenomenon against ischemia and reperfusion (I/R) injury. The activation of ATP-sensitive potassium (KATP) channels and the release of myocardial nitric oxide (NO) induced by IPC were demonstrated as the triggers or mediators of IPC. A common action mechanism of NO is a direct or indirect increase in tissue cGMP content. Furthermore, cGMP has also been shown to contribute cardiac protective effect to reduce heart I/R-induced... -
PDTC Inhibits TNF-α-Induced Apoptosis in MC3T3E1 Cells
Han-JungChae, JeehyeonBae 대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 7 Pages
대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 2003, Vol.7 No.4 2 199-205 (7 pages)
Osteoblasts are affected by TNF-α overproduction by immune cells during inflammation. It has been suggested that functional NF-κB sites are involved in TNF-α-induced bone resorption. Thus, we explored the effect of pyrrolidine dithiocarbamate (PDTC), which potently blocks the activation of nuclear factor (NF-κB), on the induction of TNF-α-induced activation of JNK/SAPK, AP-1, cytochrome c, caspase and apoptosis in MC3T3E1 osteoblasts. Pretreatment of the cells with PDTC blocked... -
Ceramide is involved in MPP+-induced Cytotoxicity in Human Neuroblastoma Cells
Eun-JooNam, Hye-SookLee, YoungJaeLee, Wan-SeokJoo, SunghoMaeng, Hye-InIm, Chan-WoongPark, YongSikKim 대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 6 Pages
대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 2002, Vol.6 No.6 1 281-286 (6 pages)
To understand the cytotoxic mechanism of MPP, we examined the involvement of ceramide in MPP- induced cytotoxicity to human neuroblastoma SH-SY5Y cells. When SH-SY5Y cells were exposed to MPP, MPP induced dose-dependent cytotoxicity accompanied by 2-fold elevation of intracellular ceramide levels in SH-SY5Y cells. Three methods were used to test the hypothesis that the elevated intracellular ceramide is related to MPP-induced cytotoxicity: C2-ceramide was... -
The Gradient Model of the Rabbit Sinoatrial Node
H.Dobrzynski, M.Lei, S.A.Jones, M.K.Lancaster, M.R.Boyett 대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 10 Pages
대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 2002, Vol.6 No.4 1 173-182 (10 pages)
a complex and inhomogeneous tissue in terms of cell morphology and electrical activity. There are two models of the cellular organisation of the sinoatrial node: the gradient and mosaic models. According to the gradient model there is a gradual transition in morphology and electrical properties of SA node cells from the centre to the periphery of the SA node. In the mosaic model, there is a variable mix of atrial and sinoatrial node cells from the centre to the periphery. This review focuses on... -
The Protective Effect of Melatonin Administration against Adriamycin-induced Cardiotoxicity in Rats
JinHan, ChungheeKim, NariKim, JuheePark, YoungchurlYang, EuiyongKim 대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 10 Pages
대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 2001, Vol.5 No.4 6 333-342 (10 pages)
caused by adriamycin was also significantly attenuated by melatonin treatment. Treatment of melatonin marked reduced adriamycin-induced the levels of MDA formation and LDH release. A cell damage indicated by the loss of myofibrils, swelling of the mitochondria as well as cytoplasmic vacuolization was seen in adriamycin-treated group. Melatonin attenuated the adriamycin-induced structural alterations. These data provide evidence that melatonin prevents adriamycin-induced cardiotoxicity and might... -
Antioxidant Effects of Serotonin and L-DOPA on Oxidative Damages of Brain Synaptosomes
SangSooHam, DongHyunKim, SukHaLee, YunSangKim, ChungSooLee 대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 9 Pages
대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 1999, Vol.3 No.2 4 147-155 (9 pages)
EDTA, H2O2 and ascorbate or xanthine and xanthine oxidase was significantly decreased by serotonin and L-DOPA (1 mM). Equal concentrations of serotonin and L-DOPA restored synaptosomal Ca2 uptake decreased by Fe2 and ascorbate, which is responsible for SOD and catalase. Protective effects of serotonin and L-DOPA on brain synaptosomes may be attributed to their removing action on reactive oxidants, hydroxyl radicals and probably iron-oxygen complex, without chelating action on iron.
