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231.

N-acetyl-L-cysteine and cysteine increase intracellular calcium concentration in human neutrophils

Md.AshrafulHasan, Won-GyunAhn, Dong-KeunSong 대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 9 Pages

대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 2016, Vol.20 No.5 2 449-457 (9 pages)

Md.AshrafulHasan, Won-GyunAhn, Dong-KeunSong 저
...
- 3,000원
N-acetyl-L-cysteine (NAC) and cysteine have been implicated in a number of human neutrophils’ functional responses. However, though Ca2+ signaling is one of the key signalings contributing to the functional responses of human neutrophils, effects of NAC and cysteine on intracellular calcium concentration ([Ca2+]?) in human neutrophils have not been investigated yet. Thus, this study was carried out with an objective to investigate the effects of NAC and cysteine on [Ca2+]? in human neutrophils....
232.

Facilitation of AMPA receptor-mediated steady-state current by extrasynaptic NMDA receptors in supraoptic magnocellular neurosecretory cells

YoonHyoungPai, ChaeSeongLim, Kyung-AhPark, HyunSilCho, Gyu-SeungLee, YongSupShin, Hyun-WooKim, ByeongHwaJeon, SeokHwaYoon, JinBongPark 대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 8 Pages

대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 2016, Vol.20 No.4 12 425-432 (8 pages)

YoonHyoungPai, ChaeSeongLim, Kyung-AhPark, HyunSilCho, Gyu-SeungLee, YongSupShin, Hyun-WooKim, ByeongHwaJeon, SeokHwaYoon, JinBongPark 저
...
- 3,000원
a reproducible inward shift in Iholding (IAMPA) in SON MNCs. Pretreatment with AP5 attenuated IAMPA amplitudes to ~60% of the control levels in low-Mg 2+ aCSF, but not in normal aCSF at Vholding of –70 mV. IAMPA attenuation by AP5 was also prominent in normal aCSF at depolarized holding potentials. Memantine, an eNMDAR blocker, mimicked the AP5-induced IAMPA attenuation in SON MNCs. Finally, chronic dehydration did not affect IAMPA attenuation by AP5 in the neurons. These results suggest...
233.

Preventive effects of imperatorin on perfluorohexanesulfonate-induced neuronal apoptosis via inhibition of intracellular calcium-mediated ERK pathway

EunkyungLee, So-YoungChoi, Jae-HoYang, YounJuLee 대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 8 Pages

대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 2016, Vol.20 No.4 9 399-406 (8 pages)

EunkyungLee, So-YoungChoi, Jae-HoYang, YounJuLee 저
...
- 3,000원
which was significantly blocked by imperatorin, NMDA receptor antagonist, MK801 and the L-type voltage-dependent calcium channel blockers, diltiazem and nifedipine. The activation of caspase-3 by PFHxS was also inhibited by MK801, diltiazem and nifedipine. PFHxS-increased ERK activation was inhibited by imperatorin, MK801, diltiazem and nifedipine. Taken together, imperatorin protects CGC against PFHxS-induced apoptosis via inhibition of NMDA receptor/intracellular calcium-mediated ERK pathway.
234.

Effects of analgesics and antidepressants on TREK-2 and TRESK currents

HyunPark, Eun-JinKim, JaeheeHan, JongwooHan, DawonKang 대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 7 Pages

대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 2016, Vol.20 No.4 7 379-385 (7 pages)

HyunPark, Eun-JinKim, JaeheeHan, JongwooHan, DawonKang 저
...
- 3,000원
TWIK-related K+ channel-2 (TREK-2) and TWIK-related spinal cord K+ (TRESK) channel are members of two-pore domain K+ channel family. They are well expressed and help to set the resting membrane potential in sensory neurons. Modulation of TREK-2 and TRESK channels are involved in the pathogenesis of pain, and specific activators of TREK-2 and TRESK may be beneficial for the treatment of pain symptoms. However, the effect of commonly used analgesics on TREK-2 and TRESK channels are not known....
235.

Blockade of Kv1.5 channels by the antidepressant drug sertraline

HyangMiLee, SangJuneHahn, BokHeeChoi 대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 8 Pages

대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 2016, Vol.20 No.2 8 193-200 (8 pages)

HyangMiLee, SangJuneHahn, BokHeeChoi 저
...
- 3,000원
range for channel opening. In the voltage range positive to +10 mV, inhibition displayed a weak voltage dependence, consistent with an electrical distance δ of 0.16. Sertraline slowed the deactivation time course, resulting in a tail crossover phenomenon when the tail currents, recorded in the presence and absence of sertraline, were superimposed. Inhibition of Kv1.5 by sertraline was use-dependent. The present results suggest that sertraline acts on Kv1.5 currents as an open-channel blocker.
236.

Comparison of electrophysiological effects of calcium channel blockers on cardiac repolarization

Hyang-AeLee, Sung-AeHyun, Sung-GurlPark, Ki-SukKim, SungJoonKim 대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 9 Pages

대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 2016, Vol.20 No.1 15 119-127 (9 pages)

Hyang-AeLee, Sung-AeHyun, Sung-GurlPark, Ki-SukKim, SungJoonKim 저
...
- 3,000원
reduction of Ca2+ channel current (ICa) might increase the risk of arrhythmia. In this study we investigated the electrophysiologicaleffects of nicardipine (NIC), isradipine (ISR), and amlodipine (AML) on the cardiac APD in rabbit Purkinje fibers, voltage-gated K+ channel currents (IKr, IKs) and voltage-gated Na+ channel current (INa). The concentration-dependent inhibition of Ca2+ channel currents (ICa) was examined in rat cardiomyocytes; these CCBs have similar potency on ICa channel blocking...
237.

Inducibility of human atrial fibrillation in an in silico model reflecting local acetylcholine distribution and concentration

MinkiHwang, Hyun-SeungLee, Hui-NamPak, EunBoShim 대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 7 Pages

대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 2016, Vol.20 No.1 14 111-117 (7 pages)

MinkiHwang, Hyun-SeungLee, Hui-NamPak, EunBoShim 저
...
- 3,000원
Vagal nerve activity has been known to play a crucial role in the induction and maintenance of atrial fibrillation (AF). However, it is unclear how the distribution and concentration of local acetylcholine (ACh) promotes AF. In this study, we investigated the effect of the spatial distribution and concentration of ACh on fibrillation patterns in an in silico human atrial model. A human atrial action potential model with an ACh-dependent K+ current (IKAch) was used to examine the effect of vagal...
238.

Brief low [Mg2+]o-induced Ca2+ spikes inhibit subsequent prolonged exposure-induced excitotoxicity in cultured rat hippocampal neurons

HeeJungKim, JiSeonYang, ShinHeeYoon 대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 9 Pages

대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 2016, Vol.20 No.1 13 101-109 (9 pages)

HeeJungKim, JiSeonYang, ShinHeeYoon 저
...
- 3,000원
Reducing [Mg2+]o to 0.1 mM can evoke repetitive [Ca2+]i spikes and seizure activity, which induces neuronal cell death in a process called excitotoxicity. We examined the issue of whether cultured rat hippocampal neurons preconditioned by a brief exposure to 0.1 mM [Mg2+]o are rendered resistant to excitotoxicity induced by a subsequent prolonged exposure and whether Ca2+ spikes are involved in this process. Preconditioning by an exposure to 0.1 mM [Mg2+]o for 5 min inhibited significantly...
239.

Blockade of Kv1.5 by paroxetine, an antidepressant drug

HyangMiLee, SangJuneHahn, BokHeeChoi 대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 8 Pages

대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 2016, Vol.20 No.1 10 75-82 (8 pages)

HyangMiLee, SangJuneHahn, BokHeeChoi 저
...
- 3,000원
which corresponded with the voltage range for channel opening. In the voltage range positive to 0 mV, inhibition displayed a weak voltage dependence, consistent with an electrical distance d of 0.32. The binding (k+1) and unbinding (k–1) rate constants for paroxetine-induced block of Kv1.5 were 4.9 µM–1s–1 and 16.1 s–1, respectively. The theoretical KD value derived by k–1/k+1 yielded 3.3 µM. Paroxetine slowed the deactivation time course, resulting in a...
240.

Activation of K+ channel by 1-EBIO rescues the head and neck squamous cell carcinoma cells from Ca2+ ionophore-induced cell death

MingZheYin, Seok-WooPark, , TaeWookKang, KyungSooKim, , , HaeYoungYoo6, JunhoLee, J.HunHah, , MyungHunSung, , SungJoonKim 대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 9 Pages

대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 2016, Vol.20 No.1 4 25-33 (9 pages)

MingZheYin, Seok-WooPark, , TaeWookKang, KyungSooKim, , , HaeYoungYoo6, JunhoLee, J.HunHah, , MyungHunSung, , SungJoonKim 저
...
- 3,000원
Ion channels in carcinoma and their roles in cell proliferation are drawing attention. Intracellular Ca2+ ([Ca2+]i)-dependent signaling affects the fate of cancer cells. Here we investigate the role of Ca2+-activated K+ channel (SK4) in head and neck squamous cell carcinoma cells (HNSCCs) of dif-ferent cell lines; SNU-1076, OSC-19 and HN5. Treatment with 1 μM ionomycin induced cell death in all the three cell lines. Whole-cell patch clamp study suggested common expressions of Ca2+-activated...

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