• 대한약침학회지
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• 제21권2호
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• pp.70-75
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• 2018

Objective: Diseases of the respiratory system are one of the main causes of death and include situation such as chronic obstructive pulmonary disease, pneumonia or asthma. Medicinal plants have beneficial effects on multiple diseases include respiratory disorders like asthma and bronchitis. The aim of this study was to evaluate the effects of U. dioica and L. Album on tracheal smooth muscle contraction. Material and methods: Hydroalcoholic extracts of L. Album and U. Dioica aerial parts were prepared by maceration method and standardized based on their total phenol content. The effect of the extracts on the KCl-induced contraction of rat trachea was examined in an organ bath chamber. Data was analyzed with spss software 22. Results: The extract of L. Album (5 mg/ml), similar to theophylline (20 mM), significantly reduced the KCl-induced tracheal contraction. On the other hand, U. Dioica (1 mg/ml and 5 mg/ml) augmented the KCl-induced contraction. Conclusion: The relaxant effect of L. Album on the trachea makes it as a candidate for the managing patients with asthma and obstructive pulmonary diseases. But because of U. Dioica potential constrictive effect on the trachea it is suggested that patients avoid consuming it.

• 동국한의학연구소논문집
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• 제4권
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• pp.267-311
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• 1995

This study was performed to analyze the effects of WhoaDam-JiHae PyeongChunYak on contracted tracheal smooth muscle in rat. Transverse strips were used for the experiment using organ bath. The test strip was perfused with modified Krebs-Ringer Bicarbonate solution which was aerated with 95% $O_2$-5% $CO_2$ mixed gas and kept at $37^{\circ}C$. WhoaDam-JiHae PyeongChunYak extract and acetylcholine infused tracheal strip that was contracted with acetylcholine. The results were as follows : 1. The contractile force of tracheal strip by acetylcholine was significantly increased by Pinelliae Rhizoma, Arisaematis Rhizoma, Sinapis Semen. Typhonii Rhizoma, Peucedani Radix, Eriobotryae Folium, Platycodi Radix, Bambusae Caulis Taeniam, Benincasae Semen, Armeniacae Amarum Semen, Asteris Radix, Periliae Fructus, Mori cortex and Lepidii Semen. 2. Arisaematis Rhizoma($1{\mu}{\ell}/m{\ell}$, $3{\mu}{\ell}/m{\ell}$, $10{\mu}{\ell}/m{\ell}$) and Asteris Radix($1{\mu}{\ell}/m{\ell}$, $3{\mu}{\ell}/m{\ell}$) slightly relaxed the contracted tracheal strip by acetylcholine. 3. Farfarae Flos significantly relaxed the contracted tracheal strip by acetylcholine. 4. The contractile force of tracheal strip by acetylcholine was significantly increased by Stemonae Radix at $30{\mu}{\ell}/m{\ell}$, on the other hand Stemonae Radix at $100{\mu}{\ell}/m{\ell}$ significantly relaxed the contracted tracheal strip by acetylcholine.

• The Korean Journal of Physiology
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• 제29권1호
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• pp.39-50
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• 1995

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 $Ca^{2+}$ PDBu-induced contraction was relaxed by staurosporine, which suggests that PDBu-induced contraction is mediated by protein kinase C (PKC). $^{45}Ca^{2+}$ uptake by rabbit carotid artery was increased by PDBu during depolarization, but not in control. Isoproterenol and sodium nitroprusside (SNP) relaxed phenylephrine-induced contraction. However, SNP but not isoproterenol relaxed the contraction induced by PDBu. Acetylcholine relaxed PDBu-induced contraction in the presence of the endothelium. 8-bromo-cyclic AMP, a permeable analogue of cyclic AMP, suppressed phenylephrine-induced contraction but not PDBu-induced contraction. 8-bromo cyclic GMP relaxed both of them with dose dependency. A large dose of forskolin relaxed PDBu-induced contraction. PDBu increased cyclic AMP without considerable change in the level of cyclic GMP. Based on these findings, PDBu-induced contraction of rabbit carotid artery was relaxed by cyclic GMP more effectively than cyclic AMP, and the action of cyclic AMP could be mediated by cyclic GMP dependent protein kinase. Therefore it is suggested that the antagonistic action between protein kinase C and cyclic GMP-dependent protein kinase plays a major role in the regulation of vascular tone.

• 동의생리병리학회지
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• 제33권4호
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• pp.198-206
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• 2019

This study was conducted to evaluate the vasorelaxant effect of DangGuiSu-San and SamHwangSaSim-Tang extract on contracted rabbit carotid artery. To study the effect of DangGuiSu-San and SamHwangSaSim-Tang extract on contracted rabbit carotid arterial strips, arterial strips with intact or damaged endothelium were used for experiment using organ bath. The pre-contracted arterial strips with Phenylephrine(PE) was treated with various concentrations of DangGuiSu-San and SamHwangSaSim-Tang extract(0.01, 0.03, 0.1, 0.3 and $1.0mg/m{\ell}$). To determine the mechanisms of DangGuiSu-San and SamHwangSaSim-Tang-induced vasorelaxant, DangGuiSu-San and SamHwangSaSim-Tang extract were infused into contracted arterial rings which had been pretreated by indomethacin(IM), tetraethylammonium chloride(TEA), $N{\omega}$-nitro-L-arginine ($_L-NNA$), methylene blue(MB). And calcium chloride(Ca) 1 mM was infused into precontracted arterial ring induced by PE after treatment of DangGuiSu-San and SamHwangSaSim-Tang extract in $Ca^{2+}$-free krebs solution. DangGuiSu-San and SamHwangSaSim-Tang extract revealed significant relaxation on PE-induced arterial contraction. DangGuiSu-San and SamHwangSaSim-Tang extract also had an effective relaxation to the intact endothelium arterial ring. SamHwangSaSim-Tang extract on contracted rabbit carotid artery is related with NO-cGMP pathway. Pretreatment of DangGuiSu-San and SamHwangSaSim-Tang extract inhibited the contraction by influx of extracellular $Ca^{2+}$ in contracted arterial ring induced by NE. This study indicated that the relaxation effect of SamHwangSaSim-Tang extract on contracted rabbit carotid artery is related with NO-cGMP pathway. Pretreatment of DangGuiSu-San and SamHwangSaSim-Tang extract inhibited the contraction by influx of extracellular $Ca^{2+}$ in contracted arterial ring induced by NE.

• 한국자원식물학회지
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• 제33권5호
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• pp.467-475
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• 2020

고혈압은 성인의 수축기 혈압이 140 mmHg 이상이거나 이완기 혈압이 90 mmHg 이상일 때를 의미하며 고혈압은 뇌졸중, 신부전 및 관상동맥질환 등 인체 전반에 걸쳐 다양한 합병증을 일으키며 고혈압 유병자의 생명과 건강을 직접적으로 위협한다(Kim and Kim, 2018). 그러나 고혈압 유병자들은 증상이 거의 나타나지 않으므로 혈압을 측정하기 전까지는 진단되지 않는다. 진득찰 즉 한방에서 희렴은 고혈압을 치료하는 처방 제제로 주로 사용됐기에 이에 착안하여 털진득찰을 이용하여 엔도델린(Endothelin)로 강제 수축 시킨 토끼 기저동맥의 이완 효과를 평가하였다. 본 연구에서는 털진득찰(Sigesbeckia pubescens)의 전초를 이용하여 키레놀 화합물을 분리 후 혈관 이완 효과를 평가하였다. 인체 내 가장 강력한 혈관수축 물질로 알려진 엔도델린은 혈관 평활근 세포막에 존재하는 엔도델린 수용체 아형 A (ET_AR)와 혈관 내피세포막에 존재하는 수용체 아형 B2(ET_B2R)에 작용하여 혈관의 긴장도를 높이고, ET_B1R에 작용하여 긴장도를 낮추는 조절자 임무를 수행한다(Lucchelli et al., 1999). 일반적으로 엔도델린 펩타이드의 경우 염증, 당뇨, 및 심혈관계 질환에서 혈중 농도가 증가하며, 엔도델린 체계의 비정상적 항진은 만성신부전 및 사구체 경화증과 같은 신질환, 특발성 폐섬유화증 및 만성폐쇄성 폐 질환 등의 호흡기계 질환, 대사질환의 중요한 관심거리가 되는 당뇨병성 신경병증 및 망막증, 수족괴사 등의 질환과 전립선 및 대장 등의 암질환 등을 초래한다(Lavoie et al., 1997; Pancrazio et al., 1998). 본 연구에서 엔도델린 유도 뇌 기저동맥의 수축을 억제하는 키레놀의 농도(EC₅₀)를 관찰한 결과 10 ㎍/mL의 농도에서 48% 이상의 유효한 혈관 이완 효능이 관찰되었다. 따라서 키레놀을 이용하여 엔도델린 활성조절 신소재로의 구조적·기능적 도출 연구가 추가로 진행된다면건강 기능성 식품 소재 또는 의약학 소재로의 개발이 가시화될 수 있을 것으로 사료된다.

• 대한수의학회지
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• 제37권1호
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• pp.119-128
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• 1997

The relaxation of gastric fundus smooth muscles is the primary physiological event which induces the receptive relaxation of monogastric animals. L-arginine/Nitric oxide(L-arg/NO) system is known to mediate the inhibitory non-adrenergic non-cholinergic(NANC) neurotransmission in various tissues including gastrointestinal smooth muscles. The longitudinal smooth muscles of porcine gastric fundus showed fast relaxation during electrical field stimulation(EFS) and rebound contraction after EFS in NANC condition. So, the purpose of present study was elucidation of the neurotrasmitters related to the NANC relaxation and explanation of the relation between NANC relaxation and L-arg/NO system. The longitdinal smooth muscles of porcine gastric fundus were hung in the organ bath and under the presence of guanethidine($5{\times}10^{-5}M$), precontraction was induced by carbachol($1{\times}10^{-6}M$). The muscle responses to EFS and drugs were isomerically recorded. The rusults were summarized as follows. 1. The longtudinal muscles of porcine gastric fundus showed frequency-dependent relaxation and rebound contraction to electrical field stimulaton(1ms, 8V, 1~16Hz, 20sec, EFS). These responses were blocked by tetrodotoxin($1{\times}10^{-6}M$). 2. The relaxation and rebound contraction of the longitudinal muscles of porcine gastric fundus to EFS were inhibited by L-NAME($2{\times}10^{-5}M$). The inhibitory effect of L-NAME was antagonized by L-arginine($1{\times}10^{-3}M$), but not by D-arginine($1{\times}10^{-3}M$). 3. Exogenous NO($NaNO_2$, $1{\times}10^{-5}{\sim}1{\times}10^{-4}M$, pH=2.0) caused concentration-dependent relaxation as EFS did. 4. Methylene Blue($2{\times}10^{-5}M$), a soluble guanylate cyclase inhibitor, inhibited the relaxation and rebound contraction of the longitudinal muscles of porcine gastric fundus induced by EFS, but N-ethlmaleimide, a adenylate cyclase inhibitor, did not. 5. 8-Br-cGMP($1{\times}10^{-6}{\sim}3{\times}10^{-6}M$), permeable cGMP analogue, induced dose-dependent relaxation. but 8-Br-cAMP($1{\times}10^{-6}{\sim}3{\times}10^{-6}M$), permeable cAMP analogue, did not. Both did not evoked rebound contraction. 6. ${\alpha}$-chymotrypsin did not affect the relaxation of the longitudinal muscles of porcine gastric fundus. 7. Reactive blue 2($1{\times}10^{-4}M$, 40min) siginificantly inhibited the rebound contraction induced by EFS and inhibited contraction caused by exogenous ATP($1{\times}10^{-4}{\sim}1{\times}10^{-3}M$). These results suggests that NANC relaxation of the longitudinal muscles of porcine gastric fundus mainly mediated by NO and the rebound contraction is related to NO and other neurotransmitters.

• The Korean Journal of Physiology and Pharmacology
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• 제1권6호
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• pp.769-774
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• 1997

Non-neuronal high affinity binding sites for benzodiazepines have been found in many peripheral tissues including cardiac muscle and vascular smooth muscle, and have been designated as 'peripheral benzodiazepine receptor'. Benzodiazepines have been shown to induce relaxation of the ileal, vesical, and uterine smooth muscles. However, it is still unclear about possible involvement of peripheral benzodiazepine receptor on the contractility of trachealis muscle. This study was performed to investigate the role of the peripheral benzodiazepine receptor on the contractility of canine trachealis muscle. Canine trachealis muscle strips of 15 mm long were suspended in an isolated organ bath containing 1 ml of physiological salt solution maintained at $37^{\circ}C$, and aerated with $95%\;O_2/5%\;CO_2$. Isometric myography was performed, and the results of the experiments were as follows: Ro5-4684, FGIN-1-27 and clonazepam reduced a basal tone of isolated canine trachealis muscle strip concentration dependently, relaxant actions of RoS-4684 and FGIN-1-27 were antagonized by PK11195, a peripheral benzodiazepine receptor antagonist. Flumazenil, a central type antagonist, did not antagonize the relaxant action of Peripheral type agonists. Saturation binding assay of [3H]Ro5-4864 showed a high affinity$(Kd=5.33{\pm}1.27nM,\;Bmax=\;867.3{\pm}147.2\;fmol/mg\;protein)$ binding site on the canine trachealis muscle. Ro 5-4684 suppressed the bethanechol-, 5-hydroxyoyptamine- and histamine- induced contractions. Platelet activating factor (PAF) exerted strong and prolonged contraction in trachealis muscle strip. Strong tonic contraction by PAE was attenuated by Ro 5-4684, but not by WEB 2086, a PAF antagonist. Based on these results, it is concluded that the peripheral benzodiazepine receptor mediates the inhibitory regulation of contractilty of canine trachealis muscle.

• 대한수의학회지
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• 제41권3호
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• pp.299-304
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• 2001

토끼 적출 신동맥에 있어서 acetylcholin(Ach)에 의한 이완작용에 대한 nitric oxide(NO) 합성 억제제인 $N^{G}$-nitro-L-arginine methyl ester(L-NAME)과 prostanoid 합성 억제제인 indomethacin의 영향을 관찰하였다. Ach($10^{-8}-3{\times}10^{-5}M$)에 대한 이완작용은 내피세포를 제거시킴으로서 완전히 사라졌다. L-NAME ($10^{-4}M$)은 Ach ($10^{-8}-3{\times}10^{-5}M$)의 이완작용을 현저히 감소시켰으며 L-arginine ($10^{-3}M$)에 의해 Ach의 이완작용에 대한 L-NAME ($10^{-4}M$)의 억제효과가 현저히 약하게 나타났다. Indomethacin ($10^{-6}M$)은 Ach ($10^{-8}-3{\times}10^{-5}M$)의 이완작용에 영향을 미치지 못하였다. L-NAME ($10^{-4}M$)에 indomethacin ($10^{-6}M$)의 첨가는 Ach ($10^{-8}-3{\times}10^{-5}M$)의 이완작용이 L-NAME ($10^{-4}M$) 단독의 경우보다 더 큰 억제효과를 나타내었다. 이와 같은 결과로 토끼적출 신동맥에서 Ach은 내피세포 의존성 이완작용을 나타내며, NO와 prostanoid가 수반되어 나타나는 것으로 사료되어진다.

• Journal of Yeungnam Medical Science
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• 제10권1호
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• pp.144-156
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• 1993

Octreotide는 somatostatin 동족체로서 8개의 aminoacid로 구성된 합성 polypeptide이다. 이는 외분비선과 내분비선, 특히 위의 분비기능과 췌장분비 기능을 억제하는 작용이 강하며 somatostatin에 비하여 체내 반감기가 길고 장기에 대한 선택성이 높기 때문에 소화성 궤양에 의해 유발되는 출혈, 급성췌장염, 그리고 소화기관의 분비선에 나타나는 종양의 치료에 대한 적용이 시도되고 있다. 저자등은 somatostatin이 말초 교감신경에 존재하며, 신경전달인자 또는 신경조정인자로서 작용할것이라는 보고와 임상적용시 혈압과 심박동수를 감소시킨다는 보고에 흥미를 가지고 그 유도체인 octreotide가 말초 교감신경에 미치는 작용을 관찰하기 위하여 다음과 같은 실험을 하였다. 흰쥐 (Sprague-Dawley)의 전립선 부위 정관 절편을 적출 근편 실험조에 현수하여 등척성 장력을 측정하였다. 흰쥐 적출정관은 전기장 자극(duration : 1 mSec, voltage: 50 V, frequency: 5 Hz or 30 Hz, train: 10 Sec)에 대하여 first phasic component (FPC)와 second tonic component (STC)로 구성된 수축 반응을 나타내었으며, 이러한 수축반응은 tetrodotoxin($10^{-6}M$) 전처치로 소실되었다. Octreotide는 전기장 자극에 의해 유발되는 수축 반응을 FPC, STC 모두 농도의존적으로 억제하였다. 그리고 24 시간 전에 reserpine(1 mg/kg, IP)을 전처치하여 norepinephrine을 고갈시킨 흰쥐에서 적출한 정관 절편과 beta-gamma-methylene ATP를 전처치하여 퓨린성 수용체를 탈감작시킴으로써 ATP의 작용을 배재한 정관절편의 전기장 유발 수축을 공히 억제하였다. 이러한 octreotide의 모든 수축 억제 작용들은 5 Hz의 전기장 자극을 가하였을 때, 30 Hz의 전기장 자극을 가하였을 때 보다 더 강하게 나타났다. 그러나 octreotide는 정관 절편의 기본장력에는 영향을 미치지 않았으며, 외부에서 첨가한 norepinephrine과 ATP에 의해 유발되는 수축반응에는 영향을 미치지 않았다. 이상의 결과로 미루어 보아 octreotide는 흰쥐적출 정관의 교감신경성 신경원으로부터 ATP와 norepinephrine의 유리를 억제함으로써 그 수축성을 억제하는 것으로 사료된다.

• Journal of Chest Surgery
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• 제29권5호
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• pp.487-494
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• 1996

기도평활근을 전장 자극하면 콜린성 수축에 이은 느리고도 지속적 인 이완성 반응이 유발된다. 지속적 인 이완성 반응은 억제성인 비아드레날린성 비콜린성 신경 섬유에 의해서 야기되는 것으로 알려져있다. 그러나 이러한 신경 말단에서 분비되는 신경 전달물질에 대해서는 아직도 실험한 동물 및 사용 조직에 따라 다르게 보고되고 있다. 본 실험은 기 니피그 기도 평 활근에서 전장 자극을 주어 이완성 반응에 관여 하는 인자 및 그 작용 기전을 알아보고자 하였다. 전장 자극으로 유발된 이완성 반응은 L-NAME에 의 해서 억제되 었으며 L-arginine에 의 해서 부분적으로 회복되 었다. 또한 L-WAME은 기초장력을 증가시켰 다. Hitroprusside는 윤상근의 기초 장력을 완전히 억제하였으며, methylene blue는 전장 자극으로 유발 된 이완성 반응을 억제함과 동시에 기초장력을 증가시켰다 Forskolin과 isoprenaline는 nitroprusside와 똑같이 기도 평활근의 기초 장력을 크게 억제하였다. TEA와 apamin은 기도 평활근 기초 장력 및 전장 자극으로 유발된 이완성 반응을 모두증가시켰다. 이상의 실험 결과로 보아 기니피그 기도 평활근 비교 감성 비콜린성 신경 섬\ulcorner 말단에서는 K' 통로와 관련하여 WO가 분비되며 이외에도 CAMP를 매개로 하는다른억제성 신경 전달물질(ex. WP,만Tl)이 분비되리라사료된다.