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- THE KOREAN JOURNAL OF PHYSIOLOGY & PHARMACOLOGY(12)
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cAMP induction by ouabain promotes endothelin-1 secretion via MAPK/ERK signaling in beating rabbit atria
Li-qunPeng, PingLi, Qiu-liZhang, LanHong, Li-pingLiu, XunCui, Bai-riCui 대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 6 Pages
대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 2016, Vol.20 No.1 2 9-14 (6 pages)
Adenosine 3',5'-cyclic monophosphate (cAMP) participates in the regulation of numerous cellular functions, including the Na+-K+-ATPase (sodium pump). Ouabain, used in the treatment of several heart diseases, is known to increase cAMP levels but its effects on the atrium are not understood. The aim of the present study was to examine the effect of ouabain on the regulation of atrial cAMP production and its roles in atrial endothelin-1 (ET-1) secretion in isolated perfused beating rabbit atria.... -
Exendin-4 Improves Nonalcoholic Fatty Liver Disease by Regulating Glucose Transporter 4 Expression in ob/ob Mice
SeokKim, JaehoonJung, HwajinKim, RokWonHeo, Chin-okYi, JungEunLee, ByeongTakJeon, Won-HoKim, JongRyealHahm, GuSeobRoh 대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 7 Pages
대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 2014, Vol.18 No.4 8 333-339 (7 pages)
Exendin-4 (Ex-4), a glucagon-like peptide-1 receptor (GLP-1R) agonist, has been known to reverse hepatic steatosis in ob/ob mice. Although many studies have evaluated molecular targets of Ex-4, its mechanism of action on hepatic steatosis and fibrosis has not fully been determined. In the liver, glucose transporter 4 (GLUT4) is mainly expressed in hepatocytes, endothelial cells and hepatic stellate cells (HSCs). In the present study, the effects of Ex-4 on GLUT4 expression were determined in the... -
The Effect of Metformin Treatment on CRBP-I Level and Cancer Development in the Liver of HBx Transgenic Mice
Jo-HeonKim, Md.MorshedulAlam, DoekBaePark, MoonjaeCho, Seung-HongLee, You-JinJeon, Dae-YeulYu, TaeDuKim6, HaYoungKim, ChungGuCho, DaeHoLee 대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 7 Pages
대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 2013, Vol.17 No.5 12 455-461 (7 pages)
Tg mice was significantly elevated compared to WT control mice while CRBP-I protein expressions in the liver and WAT of high-fat fed obese and db/db mice were comparable to WT control mice. Chronic treatment of HBx Tg mice with metformin did not affect the incidence of HCC, but slightly increased hepatic CRBP-I level. In conclusion, hepatic CRBP-I level was markedly up-regulated in HCC-prone HBx Tg mice and neither hepatic CRBP-I nor the development of HCC was suppressed by metformin treatment. -
Deficiency of iNOS Does Not Prevent Isoproterenol-induced Cardiac Hypertrophy in Mice
Hye-NaCha, Geu-RuHong, Yong-WoonKim, Jong-YeonKim, Jin-MyoungDan, So-YoungPark 대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 7 Pages
대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 2009, Vol.13 No.3 3 153-159 (7 pages)
an osmotic minipump. Isoproterenol reduced body weight and fat mass in both iNOS KO and wild-type mice compared with saline-infused wild-type mice. Isoproterenol increased the heart weight in both iNOS KO and wild-type mice but there was no difference between iNOS KO and wild-type mice. Posterior wall thickness of left ventricle showed the same tendency with heart weight. Protein level of iNOS in the left ventricle was increased in isoproterenol-infused wild-type mice. The gene expression of... -
Metformin Enhances Leptin Sensitivity in Aged Rats
SaeRomKim, So-YoungPark, JongYeonKim, YongWoonKim 대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 6 Pages
대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 2006, Vol.10 No.1 1 1-6 (6 pages)
by measuring food intake, body weight and visceral fat losing effects. Leptin (15μg/D) was administered by intracerobroventricular (i.c.v.) infusion through osmotic minipump for 1 week. Metformin treatment decreased body weight and daily food intake in both adult and aged rats compared with their control rats, however, these effects were more prominent in aged rats than in adult rats. Anorexic and fat losing responses following i.c.v. leptin were attenuated in aged rats compared to adult rats.... -
GLUT Phosphorylation May be Required to GLUT Translocation Mechanism
Jong-SikHah 대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 10 Pages
대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 2000, Vol.4 No.6 8 487-496 (10 pages)
In this work, GLUTs phosphorylations by a downstream effector of PI3-kinase, PKC-ζ, were studied, and GLUT4 phosphorylation was compared with GLUT2 phosphorylation in relation to the translocation mechanism. Prior to phosphorylation experiment, PKC-ζ kinase activity was determined as 20.76⁑4.09 pmoles Pi/min/25 ng enzymes. GLUT4 was phosphorylated by PKC-ζ and the phosphorylation was increased on the vesicles immunoadsorpted from LDM and on GLUT4 immunoprecipitated from GLUT4-... -
Comparative Effects of PKB-α and PKC-ζ on the Phosphorylation of GLUT4-Containing Vesicles in Rat Adipocytes
Jong-SikHah 대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 8 Pages
대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 2000, Vol.4 No.6 7 479-486 (8 pages)
muscle and fat cells by promoting the translocation of glucose transporter (GLUT4) to the cell surface. Phosphatidylinositide 3-kinase (PI3-kinase) has been implicated in this process. However, the involvement of protein kinase B (PKB)/Akt and PKC-ζ, those are known as the downstream target of PI3-kinase in regulation of GLUT4 translocation, is not known yet. An interesting possibility is that these protein kinases phosphorylate GLUT4 directly in this process. In the present study, PKB-α and... -
Effects of Acarbose on the Expression of Obese and Neuropeptide Y (NPY) Genes in Mice on High-Carbohydrate Diet
JiyeonKimSunghyunChung 대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 6 Pages
대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 1999, Vol.3 No.4 8 433-438 (6 pages)
correlates with body weight. As dose of acarbose increased, leptin mRNA level also increased, suggesting that potent inhibition of α-glycosidase by a higher dose of acarbose furthers the enzyme activity and leptin gene consequently. On the other hand, central expression level of NPY gene was increased significantly compared with the control group at the same amount of acarbose administered, reflecting that leptin and NPY operate in a negative-feedback circuit to regulate body fat stores. -
Role of Ca2+ in the Stimulation of Glucose Transport by Insulin in Adipocytes
Sung-HoeChang, YeonJinJang, Kun-KooPark, GhiSuKim, HeeJeongRyu, ChunSikPark 대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 8 Pages
대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 1999, Vol.3 No.3 14 357-364 (8 pages)
We investigated the role of Ca2 and protein kinases/phosphatases in the stimulatory effect of insulin on glucose transport. In isolated rat adipocytes, the simple omission of CaCl2 from the incubation medium significantly reduced, but did not abolish, insulin-stimulated 2-deoxy glucose (2-DG) uptake. Pre-loading adipocytes with intracellular Ca2 chelator, 5,5'-dimethyl bis (o-aminophenoxy)ethane-N,N,N'N' tetraacetic acetoxymethyl ester (5,5'-dimethyl BAPTA/AM) completely blocked... -
Streptozotocin으로 당뇨병을 유발시킨 흰쥐의 지방세포에서 일어나는 Insulin-Sensitive Phosphodiesterase의 조절에 관한 연구
박경선(Kyung Sun Park), 이명순(Myung Soon Lee), 김경환(Kyung Hwan Kim) 대한약리학회 대한약리학잡지 10 Pages
대한약리학회 대한약리학잡지 1993, 제 29권 제 2호 11 253-262 (10 pages)
흰쥐를 모델로 하여 당뇨병으로 인한 인슐린의 antilipolytic action을 매개하는 insulin-sensitive cyclic nucleotide phosphodiesterase의 역할의 변화 가능성을 연구하였다. 흰쥐의 epididymal adipose tissue로부터 분리한 지방세포를 여러 약물과 toxin으로 전처치한 다음, insulin을 처치 또는 처치하지 않고 37˚C에서 15분 동안 incubation하였다. 그리고 나서 differential centrifugation으로 3 fractions로 분리한 다음 cAMP phosphodiesterase activity를 assay하였다. Insulin에 의한 PDE activities의 증가는 당뇨병군과...
