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An anatomical study on the branching patterns of left coronary artery in the rats
2007
Ahn, D.C. (Kangwon National University, Chuncheon, Republic of Korea) | Kim, I.S. (Chonbuk National University, Jeonju, Republic of Korea), E-mail: iskim@chonbuk.ac.kr
The left main descending artery (LMDA) of left coronary artery (LCA) in rats runs around the left side of conus arteriosus after arising from the aortic sinus and descends to the apex of heart with branching several branches into the wall of left ventricle (LV). The ligation site of LMDA for myocardial infarction (MI) is the 2~4 mm from LCA origin, between the pulmonary trunk and left auricle. The characteristics that rat heart has no interventricular groove on the surface and its coronary arteries run intramyocardially with branching several branches give the difficulty in surgery for MI which resulted in expected size.
Afficher plus [+] Moins [-]Regulation of Mg2+ efflux by cAMP in perfused rat heart and isolated ventricular myocytes
1999
Kang, H.S. | Kim, J.S. | Kang, C.W. | Lee, H.I. (Chonbuk National University, Chonju (Korea Republic). Bio-Safety Research Institute)
Although it has been reported that hormones or chemicals, which increse in intracellular cAMP, produced Mg2+ release from the heart, it is not well characterized whether a specific Mg2+ exchanger is involved in cAMP-induced Mg2+ efflux in themammalian hearts In this work, we studied the relationship between the increase in intracellular cAMP and ion transport system on Mg2+ regulation in the perfused rat heart and isolated myocytes. The Mg2+ content in the perfusate and supernatant were measured by atomic absorption spectrophotometer. The addition of membrane permeable cAMP analogue to the perfused hearts and myocytes. cAMP-induced Mg2+ efflux was ingibited by H7, benzamil or imipramine in the perfused hearts and myocytes, but not by EIPA. We confirmed that a significant Mg2+ efflux was induced by an increase in intracellular cAMP in the hearts and myocytes. The cAMP-induced increase of Mg2+ efflux in the hearts may be involved in ion transport system(Na+-Ca2+ and Na+-Mg2+ exchanger)
Afficher plus [+] Moins [-]Prevalence of Sarcocystis infections in the slaughtered cattle in Cheju
1990
Yang, J.H. | Kang, Y.B. | Wee, S.H. (Rural Development Administration, Anyang (Korea Republic). Veterinary Research Institute) | Lee, S.T. | Kim, K.S. (Cheju Provincial Veterinary Office, Cheju (Korea Republic))
Effects of phenylephrine-induced PKC activation on Mg2+ release in guinea pig heart and isolated ventricular myocytes
1998
Chang, S.E. | Kang, H.S. | Kim, J.S. (Chonbuk National University, Chonju (Korea Republic). Department of Pharmacology)
Effects of GS-386 on the calcium current in rabbit atrial myocytes
1994
Park, C.O. | Chang, K.J. | Kim, Y.M. | Haan, J.H. | Hong, S.G. (Gyeongsang National University, Chinju (Korea Republic). College of Medicine)
Pharmacological characteristics of higenamine on adrenergic beta-receptors
1992
Yun, H.I. (Chungnam Nat'l Univ., Taejon (Korea Republic). Coll. of Veterinary Medicine) | Chang, K.C. (Gyeongsang Nat'l Univ., Chinju (Korea Republic). Coll. of Medicine) | Lee, C.E. (Seoul Nat'l Univ., Suwon (Korea Republic). Coll of Veterinary Medicine)