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PKA-Mediated Regulation of B/K Gene Transcription in PC12 Cells
Mi-HyunChoi, Ho-ShikKim, Sung-HoChoi, Mi-YoungKim, Yoon-SeongJang, Young-MinJang, Jeong-HwaLee, Seong-WhanJeong, In-KyungKim, Oh-JooKwon 대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 8 Pages
대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 2005, Vol.9 No.6 4 333-340 (8 pages)
line (PC12-123.7). One cAMP-response element (CRE)-like sequence (B/K CLS) was found in the promoter region of B/K DNA, and electrophoretic mobility shift assay indicated its binding to CREM and CREB. Forskolin significantly suppressed the promoter activity in CHO-K1 cells transfected with the constructs containing B/K CLS, but not with the construct in which B/K CLS was mutated (AC：TG). Taken together, we suggest that the transcription of B/K gene in PC12 cells may be regulated by PKA-dependen... -
G Protein-Coupled Receptor Signaling in Gastrointestinal Smooth Muscle
UyDongSohn, DongSeokKim, KarnamSMurthy 대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 11 Pages
대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 2001, Vol.5 No.4 1 287-297 (11 pages)
Contraction of smooth muscle is initiated by an increase in cytosolic Ca2 leading to activation of Ca2/ calmodulin-dependnet myosin light chain (MLC) kinase and phosphorylation of MLC. The types of contraction and signaling mechanisms mediating contraction differ depending on the region. The involvement of these different mechanisms varies depending on the source of Ca2 and the kinetic of Ca2 mobilization. Ca2 mobilizing agonists stimulate different... -
Molecular Analysis of AQP2 Promoter. I. cAMP-dependent Regulation of Mouse AQP2 Gene
MiYoungPark, YongHwanLee, HaeRahnBae, RyangHwaLee, SangHoLee, JinSupJung 대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 8 Pages
대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 1999, Vol.3 No.2 5 157-164 (8 pages)
and NIH3T3 cells, the constructs containing the promoter of AQP2 gene showed promoter activities, indicating lack of tissue-specific element in the 1.4 kb 5'-flanking region of the mouse AQP2 gene. Luciferase activity in the IMCD cells transfected with the construct containing 5-flanking region showed responsiveness to cpt-cAMP, indicating that the 1.4 kb 5'-flanking region contains the element necessary for the regulatory mechanism by cAMP. The promoter-luciferase constructs which do not have a... -
Effects of Dopamine and Haloperidol on Morphine-induced CREB and AP-1 DNA Binding Activities in Differentiated SH-SY5Y Human Neuroblastoma Cells
Soo-kyungKimGee-younKwon 대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 6 Pages
대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 1998, Vol.2 No.6 3 671-676 (6 pages)
In the present study, we first examined whether the changes in the DNA binding activities of the transcription factors, cAMP response element binding protein (CREB) and activator protein-1 (AP-1) mediate the long-term effects of morphine in differentiated SH-SY5Y human neuroblastoma cells. The increases in CREB and AP-1 DNA binding activities were time-dependent up to 6 days of morphine treatment (1, 4, and 6 days). However, the significant reduction in the DNA binding activities of CREB and... -
Inhibitory Effect of Caffeine on Carbachol-Induced Nonselective Cationic Current in Guinea-Pig Gastric Myocytes
SungJoonKim, KyungWanMin, YoungChulKim, SangJinLee, InsukSo, KiWhanKim 대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 7 Pages
대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 1998, Vol.2 No.3 10 353-359 (7 pages)
In gastrointestinal smooth muscle, muscarinic stimulation by carbachol (CCh) activates nonselective cation channel current (ICCh) which is facilitated by intracellular [Ca2] increase. Caffeine is widely used in experiments to mobilize Ca2 from intracellular stores. This study shows a strong inhibitory effect of caffeine on ICCh in guinea-pig gastric myocyte. In this study, the underlying mechanism of the inhibitory effect of caffeine was investigated. ICCh was completely... -
Inhibitory Effects of Ginseng Saponins on c-fos mRNA Expression and the Proliferation of Rat Aortic Vascular Smooth Muscle Cells Stimulated by Angiotensin II
WoongChoi, JinYoungJung, HunSikKim, YeoPyoYun, JongDaePark, HeeYulAhn 대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 7 Pages
대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 1998, Vol.2 No.2 8 201-207 (7 pages)
To evaluate the possibility that the ginseng saponins could be developed as an anti-arteriosclerotic agent, we examined the inhibitory effects of ginseng saponins (total saponin[TS], panaxatriol[PT], panaxadiol[PD]) on the expression of c-fos mRNA and the proliferation of cultured rat aortic vascular smooth muscle cells (VSMCs) stimulated by angiotensin II (Ang II). TS and PT (1.0 mg/ml) suppressed c-fos mRNA induction in VSMCs stimulated by 10-5 M Ang II. The order of inhibitory potency was... -
Effects of Histamine H2-Receptor Stimulation on Mg2+ Efflux in Perfused Guinea Pig Heart
Hyung-SubKang, Sung-EunChang, Chang-WonKang, Soo-WanChae, Jin-SangKim 대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 6 Pages
대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 1998, Vol.2 No.1 6 49-54 (6 pages)
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Effects of Extracellular Ca++on PKC or cAMP-stimulated Increases in LH Release and LHβSubunit mRNA Levels in Rat Anterior Pituitary Cells
박덕배(Deok-bae Park), 김창미(Chang-mee Kim), 천민석(Min-seok Cheon), 유경자(Kyung-za Ryu) 대한약리학회 대한약리학잡지 10 Pages
대한약리학회 대한약리학잡지 1996, 제 32권 제 3호 6 347-356 (10 pages)
We examined the effects of EGTA and verapamil on phorbol ester-and forskolin-stimulated LH releases and LHβ subunit mRNA levels in order to verify the role of extracellular Ca++ on PKC- or cAMP-induced increases in LH release and LHβ subunit mRNA levels in cultured anterior pituitary cells of rat. Forskolin-stimulated LHβ subunit mRNA levels as well as LH release were all suppressed by prevention of Ca++ mobilization from extracellular environment, after the treatment of EGTA as a Ca++... -
Dibutyryl-cyclic AMP와 Forskolin의 혈관평활근 이완작용
안희열(Hee-Yul Ahn), 임정규(Jung-Kyoo Lim) 대한약리학회 대한약리학잡지 8 Pages
대한약리학회 대한약리학잡지 1990, 제 26권 제 2호 4 127-134 (8 pages)
세포막을 투과하는 cyclic AMP의 유도체인 Dibutyryl-cyclic AMP(db-cAMP)와 ad-enylate cyclase를 활성화시킴으로써 세포내에 CAMP를 증가시키는 Forskolin을 이용하여 토끼 대동맥평활근 이완작용의 기전을 검토하여 다음과 같은 결과를 얻었다. 1. Db-cAMP는 1μM norepinephrine에 의한 지속성 수축을 농도의존적으로 억제하였으나 고농도의 K에 의한 수축은 억제하지 못하였다. 2. Forskolin은 1μM norepinephrine에 의한 지속성 수축을 농도의존적으로 억제하였으며, 고통도의 K에 의한 수축보다 더 효과적으로 억제하였다. 3.... -
Identification of Adenosine 5 -Tetraphosphate in Rabbit Platelets and its Metabolism in Blood
Lee, Joong-Woo, Jeon, Sang-Jun, Kong, In-Deok, Jeong, Seong-Woo 대한생리학회 대한생리학회지 8 Pages
대한생리학회 대한생리학회지 1995, 제 29권 제 2호 3 217-224 (8 pages)
Adenosine 5 -tetraphosphate (ATPP) was identified and quantified in extracts of rabbit platelets by elution of extracts containing authentic adenosine 5 -tetraphosphate and comparison of retention time with nucleotide standards using high-performance liquid chromatography technique. The amount of adenosine 5 -tetraphosphate was 0.62 nmoles/109 cells which was 62-fold lower than that of ATP but only 10-fold lower than that of ADP. During platelet aggregation induced by thrombin, adenosine 5...
