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마취된 당뇨 흰쥐의 신혈류량 감소에 관여하는 기전 : 내인성 쓰롬복산계의 무관성
하헌주(Hun-joo Ha), Earl W. Dunham 대한약리학회 대한약리학잡지 12 Pages
대한약리학회 대한약리학잡지 1988, 제 24권 제 2호 8 221-232 (12 pages)
본 연구는 스트렙토조토신 투여에의해 유도된 인슐린 의존적 당뇨 흰쥐에서 관찰되는 신혈류량의 감소가 내인성 혈관 수축계의 하나인 쓰롬복산의 영향이 증가된 때문인지를 규명하고자 하였다. 펜토바비탈을 이용하여 마취를 유도한 후 주어진 시간동안 아무런 약리학적 자극이 없는 상태에서 신동맥의 헐류량 (ml min-1 gKw-1), 혈압 (mm Hg) 및 그때의 신동맥 저항 (혈압/신동맥의 혈류량)을 관찰하였다. 그 각각에 대응하는 값은 당뇨쥐에서는 5.9 ± 0.3(P<0.01, 대조군과 비교), 115 ± 3 및 20.3 ± 1.0(P<0.01, 대조군과... -
가토(家兎) 신장기능(腎臟機能)에 미치는 측뇌실내(側腦室內) Ouabain의 영향(影響)
이신웅(Shin-Woong Lee) 대한약리학회 대한약리학잡지 14 Pages
대한약리학회 대한약리학잡지 1976, 제 12권 제 1호 4 31-44 (14 pages)
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Effect of Blood Pressure on the Endothelium-Dependent Contraction in Rat Aorta
Jeon, Byeong-Hwa, Kim, Hoe-Suk, Kim, Se-Hoon, Chang, Seok-Jong 대한생리학회 대한생리학회지 12 Pages
대한생리학회 대한생리학회지 1996, 제 30권 제 1호 3 21-32 (12 pages)
To investigate the mechanisms of increased endothelium-dependent contraction by acetylcholine in hypertensive rats, the relationship between endothelium-dependent contraction by acetylcholine and blood pressure was studied in spontaneously hypertensive rats (SHR), one-kidney, one clip Goldblatt hypertension (1K,1C-GBH) rats, and Wistar-Kyoto rats (WKY). SHR were treated orally with enalapril or nicardipine in order to prevent development of hypertension or suppress the developed hypertension.... -
Effect of Cyclic Nucleotides on Phorbol Ester-Induced Contraction in Rabbit Carotid Artery
Jung, Dong-Keun, Woo, Jae-Suk, Jung, Jin-Sup, Kim, Yong-Keun, Lee, Sang-Ho 대한생리학회 대한생리학회지 12 Pages
대한생리학회 대한생리학회지 1995, 제 29권 제 1호 4 39-50 (12 pages)
This study was designed to clarify the action of cyclic nucleotides, cyclic AMP and cyclic GMP, on phorbol 12,13-dibutyrate (PDBu)-induced contraction in rings isolated from rabbit carotid artery. Arterial rings, 2 mm in width, were myographied isometrically in an isolated organ bath. PDBu produced slowly developing, sustained contraction in rabbit carotid artery, in a dose dependent manner, which was independent of extracellular Ca2+ PDBu-induced contraction was relaxed by staurosporine, which... -
Effects of cGMP on the Contractility and Ca Movement in the Aorta of Normotensive Wistar-Kyoto Rats and Spontaneously Hypertensive Rats
Park, Hae-Kun, Jeon, Byeong-Hwa, Kim, Se-Hoon, Kim, Hoe-Suk, Chang, Seok-Jong 대한생리학회 대한생리학회지 10 Pages
대한생리학회 대한생리학회지 1994, 제 28권 제 2호 8 181-190 (10 pages)
Endothelium-derived relaxing factor (EDRF) activates guanylate cyclase which mediates the formation of cGMP from GTP in vascular smooth muscle. It is well known that endothelium-dependent relaxation is impaired in spontaneously hypertensive rats (SHR). However, it is still unknown whether the impaired endothelium-dependent relaxation in SHR results from the reduced release of EDRF or from the decrease of vascular response to EDRF. We investigated the effects of cGMP on the contractility and Ca... -
Cardiovascular Neurons Mediating Somatosympathetic Reflex in Rostral Ventrolateral Medulla
Goo, Yong-Sook, Kim, Sang-Jeong, Kim, Jun, Sung, Ho-Kyung 대한생리학회 대한생리학회지 14 Pages
대한생리학회 대한생리학회지 1993, 제 27권 제 2호 7 185-198 (14 pages)
The rostral ventrolateral medulla (RVLM) includes vasopressor neurons, which transmit activation signals to the intermediolateral nucleus (IML) of the spinal cord, where the preganglionic sympathetic nucleus is located, to raise arterial blood pressure (BP). However, controversy exists as to the possible depressor area in the RVLM and the pathway involved. The present study persued evidence far the location of depressor neurons and the pathway by simultaneously observing changes in BP and the... -
Effect of Nifedipine on Endocrine and Cardiovascular Responses to Angiotensin II in SHR Fed with Different Sodium Diets
Choi, Eun-Kyung, Park, Yoon-Yub, Ahn, Dong-Kuk, Park, Jae-Sik, Lee, Won-Jung 대한생리학회 대한생리학회지 10 Pages
대한생리학회 대한생리학회지 1993, 제 27권 제 1호 6 57-66 (10 pages)
Effects of a voltage dependent calcium channel antagonist, nifedipine, on the responses of blood pressure, and secretion of atrial natriuretic peptide (ANP) and aldosterone to angiotensin II (Ang II) were compared in male Wistar and spontaneously hypertensive rats (SHR). A low, control or high sodium diet (2, 10 or 25 mmol Na/100 g diet) was fed for 6 weeks from the age of 6 weeks. On the morning of the experiment catheters were inserted under ether anesthesia in the femoral artery for pressure... -
A Study on the Na+/Ca2+ Exchange Mechanism in the Smooth Muscle of Guinea-pig Stomach
Kim, Eui-Yong, Han, Jin, Kim, Ki-Whan 대한생리학회 대한생리학회지 14 Pages
대한생리학회 대한생리학회지 1992, 제 26권 제 1호 6 55-68 (14 pages)
The effects of changes in extracellular Na+ and Ca+ concentration on the membrane potential and contractility were studied in the antral circular muscle of guinea pig stomach in order to elucidate the existence and the nature of Na+/Ca2+ exchange mechanism. All experiments were performed in tris buffered Tyrode solution which was aerated with 100% O2 and kept at 35℃. The treatment of 10-5 ouabain was performed to induce intracellular Na+ loading prior to the start of experiment. The results... -
The Water-Soluble Chitosan Derivative, N-Methylene Phosphonic Chitosan, Is an Effective Fungicide against the Phytopathogen Fusarium eumartii
Florencia Anabel Mesas, Mar?a Cecilia Terrile, Mar?a Ximena Silveyra, Adriana Zu?iga, Mar?a Susana Rodriguez, Claudia Anah? Casalongu?, Julieta Ren?e Mendieta 한국식물병리학회 The Plant Pathology Journal 10 Pages
한국식물병리학회 The Plant Pathology Journal 2021, 37권 6호 4 533-542 (10 pages)
Chitosan has been considered an environmental-friend- ly polymer. However, its use in agriculture has not been extended yet due to its relatively low solubility in water. N-Methylene phosphonic chitosan (NMPC) is a water- soluble derivative prepared by adding a phosphonic group to chitosan. This study demonstrates that NMPC has a fungicidal effect on the phytopathogenic fungus Fusarium solani f. sp. eumartii (F. eumartii) judged by the inhibition of F. eumartti mycelial growth and spore... -
Effect of Producing Different Phenazines on Bacterial Fitness and Biological Control in Pseudomonas chlororaphis 30-84
한국식물병리학회 The Plant Pathology Journal 15 Pages
한국식물병리학회 The Plant Pathology Journal 2018, 34권 1호 5 44-58 (15 pages)
Pseudomonas chlororaphis 30-84 is a biological control agent selected for its ability to suppress diseases caused by fungal pathogens. P. chlororaphis 30-84 produces three phenazines: phenazine-1-carboxylic acid (PCA), 2-hydroxy-phenazine-1-carboxylic acid (2OHPCA) and a small amount of 2-hydroxy-phenazine (2OHPHZ), and these are required for fungal pathogen inhibition and wheat rhizosphere competence. The two, 2-hydroxy derivatives are produced from PCA via the activity of a phenazine-modifying...
