• 제목/요약/키워드: 생리학

검색결과 3,448건 처리시간 0.027초

TNF-α로 유도된 혈관내피세포의 혈관염증에 미치는 오적산(五積散)의 억제 효과 (Inhibitory Effects of Ojeoksan on TNF-α-induced Vascular Inflammation in Human Umbilical Vein Endothelial Cells)

  • 한병혁;윤정주;김혜윰;안유미;홍미현;손찬옥;나세원;이윤정;강대길;이호섭
    • 대한본초학회지
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    • 제33권4호
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    • pp.59-67
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    • 2018
  • Objectives : Ojeoksan, originally recorded in an ancient Korean medicinal book named "Donguibogam" and has been used for the treatment of circulation disorder of blood which was called blood accumulation (血積) in Korean medicine. Therefore, this study was carried out to investigate the beneficial effect of OJS on vascular inflammation in HUVECs. Methods : We evaluated the effect of OJS on the expression of cell adhesion molecules and protective role in HUVEC stimulated by TNF-${\alpha}$ by using Western blot. Results : Pretreatment with OJS decreased the adhesion of HL-60 cells to TNF-${\alpha}$-induced HUVEC. OJS suppressed TNF-${\alpha}$-induced expression level of cell adhesion molecules such as intracellular adhesion molecule-1 (ICAM-1), vascular cell adhesion molecule-1(VCAM-1), and endothelial cell selectin (E-selectin). Moreover, OJS significantly decreased TNF-${\alpha}$-induced production of intracellular reactive oxygen species (ROS); and inhibited the phosphorylation of $I{\kappa}B-{\alpha}$ in the cytoplasm compared to the experimental group. Pretreatment with OJS inhibited the trans-location of NF-${\kappa}B$ p65 to the nucleus. OJS also inhibited phosphorylation of MAPKs compared to the experimental group. OJS significantly increased the protein expression of Nrf2 and HO-1. Conclusions : Ojeoksan has a protective effect on vascular inflammation, and might be a potential therapeutic agent for early atherosclerosis.

고과당식이 랫드모델에서 홍삼과 상엽 혼합투여에 의한 대사증후군 개선효과 (Beneficial effect of Combination with Korean Red Ginseng and Morus alba in metabolic syndrome)

  • 이윤정;김혜윰;윤정주;이소민;안유미;고정현;고민철;이호섭;최경민;강대길
    • 대한본초학회지
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    • 제27권6호
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    • pp.99-105
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    • 2012
  • Objectives : Korean red ginseng and Morus alba L. are used as a traditional treatment for diabetes. This study was designed to elucidate whether combination with Korean red ginseng and Morus alba L. (MPM) ameliorates metabolic syndrome in fructose-fed rats. Methods : Animals were divided into four groups; Control receiving tap water, fructose-fed, rosiglitazone-treated fructose-fed rats, and MPM-treated fructose-fed rats both receiving supplemented with 60% fructose (n=10). The MPM or rosiglitazone groups initially received a high-fructose (HF) diet alone for 8 weeks, with supplementation with MPM or rosiglitazone occurring during the final 6 weeks. Results : MPM and rosiglitazone, synthetic $PPAR{\gamma}$ agonist, treatment significantly prevented the increase in fasting serum glucose, leptin, triglyceride, and low density lipoprotein in the HF group when comparing with the control group. MPM and rosiglitazone also led to an increase in high density lipoprotein level in the HF group. The administration of MPM and rosiglitazone prevented the development of the metabolic disturbances such as impaired glucose tolerance, and blood pressure. MPM suppressed increased expressions of endothelin-1 (ET-1) in HF rat aorta. In addition, MPM significantly increased IR-${\beta}$ and PPAR-${\gamma}$ expression in muscle. Conclusions : Based on these results, we suggest that the administration of MPM improves metabolic syndrome through the alteration in lipid profiles and suppression of insulin resistant and blood pressure.

면역알고리즘을 이용한 오델로 게임전략 탐색 (The search of the Othello game strategies using the immune algorithm)

  • 이근혜;강태원
    • 한국정보과학회:학술대회논문집
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    • 한국정보과학회 2004년도 봄 학술발표논문집 Vol.31 No.1 (B)
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    • pp.598-600
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    • 2004
  • 기존의 연구 논문 중 비결정론적인 알고리즘인 유전자 알고리즘이나 인공신경망 등을 오델로 게임에 적용하여 자동학습을 시킨 예는 많으나 면역알고리즘을 모델로 게임에 적용한 예는 찾기가 어렵다 본 논문에서는 생리학의 면역시스템의 특징을 그대로 적용한 면역알고리즘을 모델로 게임에 적용하여 게임전략 생성에 관하여 연구한다. 생리학의 면역시스템은 자기조절능력이 있다는 외과 재 감염시 빠르게 대응할 수 있다는 특징이 있다. 면역알고리즘을 이용하여 탐색된 전략을 유전자알고리즘 그리고 기존에 연구되어진 게임전략 등과 실험하여 그 결과를 비교.연구한 결과 면역알고리즘을 적용하여 탐색된 모델로 게임전략이 가장 높은 승률을 보인다.

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오령산(五苓散)의 본태성 고혈압 동물모델에서 혈압강하 및 혈관 이완 효과 (Effect of Oryeongsan on Spontaneously Hypertensive Rat decrease of Blood Pressure and Vasodilatory)

  • 장윤재;김혜윰;홍미현;윤정주;이호섭;강대길
    • 대한한의학방제학회지
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    • 제30권3호
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    • pp.123-135
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    • 2022
  • Oryeongsan (ORS), a formula composed of five herbal medicines, has long been used to treat impairments of the regulation of body fluid homeostasis. The purpose of this study was to determine the antihypertensive and renal protective effects of ORS in rats with hypertension. Spontaneously hypertensive rats (SHR) were divided into two groups with similar mean baseline systolic blood pressure (SBP). Then, 1 mL/kg of vehicle (distilled water) or 1.5, 3 g/kg of ORS extract were administered orally once a day for 4 weeks. SBP and diastolic blood pressure (DBP) were measured at weeks 1, 2, 3 and 4. At the end of the experiment, blood was collected, and heart were removed for histology. By the 2 weeks after initiation of treatment, the ORS treated group had significantly lower SBP than SHR rats. The ORS treatment significantly improved blood pressure and echocardiogram parameters compared to hypertensive rats. Additionally, the left ventricular (LV) remodeling and LV dysfunction were significantly improved in ORS treated group hypertensive rats. Furthermore, an increase in fibrotic area has been observed in SHR rats compared with Wistar-Kyoto rats (WKY). Furthermore, administration of ORS significantly attenuated cardiac fibrosis in hypertensive rats. Therefore, these findings suggest that ORS has a protective effect on heart failure by alleviating hypertensive heart disease and cardiovascular dysfunction in SHR.

혈관내피세포에서 우방자(牛蒡子) 에탄올 추출물의 항염증 효과 (Anti-Inflammatory Effect of Ethanol Extract from the Seeds of Arctium Lappa L. in Vascular Endothelial Cells)

  • 이윤정;윤정주;김혜윰;안유미;홍미현;손찬옥;나세원;이호섭;강대길
    • 대한한방부인과학회지
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    • 제32권3호
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    • pp.20-31
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    • 2019
  • Objectives: The seeds from Arctium lappa have been considered for its various pharmacological properties, which include anti-carcinogenic, anti-inflammatory, anti-diabetic, and anti-viral activities. Methods: In the present study, we investigated the anti-inflammatory effect of the ethanol extract from the seeds of Arctium lappa L (EAL) on cytokine-induced vascular inflammation in human umbilical vein endothelial cells (HUVEC). Results: Pretreatment with EAL significantly decreased tumor necrosis factor alpha ($TNF-{\alpha}$)-induced cell adhesion molecules expression such as intercellular adhesion molecule-1 (ICAM-1), vascular cell adhesion molecule-1 (VCAM-1), and endothelial-selectin (E-selectin) in a dose-dependent manner. Cell adhesion assay showed that pretreatment with EAL suppressed HUVEC-monocyte adhesion by $TNF-{\alpha}$ over $1{\mu}g/ml$ concentration. We investigated the involvement of nuclear transcription factor kappa-B ($NF-{\kappa}B$) in $TNF-{\alpha}$-induced vascular inflammation. $NF-{\kappa}B$ p65 nuclear expression was induced by $TNF-{\alpha}$, however, pretreatment with EAL was attenuated that nuclear translocation. In cytoplasm, EAL was also attenuated $TNF-{\alpha}$-induced decrease of inhibitor of ${\kappa}B-{\alpha}$ ($I{\kappa}B-{\alpha}$) expression. Moreover, EAL significantly decreased $TNF-{\alpha}$-induced production of intracellular reactive oxygen species (ROS). Conclusions: Taken together, our findings suggest that seeds of Arctium lappa L could be a therapeutic herb for prevention of cardiovascular diseases throughout the inhibition of vascular endothelial inflammation.

양춘사 추출물이 HepG2 세포에서 콜레스테롤 합성에 미치는 효과 (Effects of Amomum Villosum Extracts on Cholesterol Synthesis in HepG2 Cells)

  • 김하림;김예슬;최한별;우수현;권강범
    • 동의생리병리학회지
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    • 제38권1호
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    • pp.27-31
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    • 2024
  • Dried fruits of Amomum villosum Lour. have been used an korean medicine to treat digestive diseases for a long time. It has been reported that Amomum villosum extracts(AVE) have effects for diabetes and steatosis in experimental models. But we did not find the report about the cholesterol synthesis inhibition effects of AVE. The objective of this study is to clarify the inhibitory effect of AVE against oleic acid and glucose-induced hypercholesterolemia in HepG2 cells. The results show that AVE had a significant inhibitory effect against oleic acid and glucose-induced cholesterol accumulation. Those effects seem to be caused by inhibition of AVE on oleic acid and glucose-induced decrease of HMG CoA reductase, which is the rate-limiting enzyme for cholesterol biosynthesis in liver. It is believed that the results of this study can provide basic data for the drug and functional food development of hypercholesterolemia treatments.

Puromycin Aminonucleoside에 의해 유도된 신증후군에 대한 옥미수(玉米鬚)의 보호효과 (Renoprotective Effect of Maydis Stigma on Puromycin Aminonucleoside-induced Nephrotic Syndrome)

  • 윤정주;고민철;한병혁;김혜윰;안유미;이윤정;이호섭;강대길
    • 대한한방부인과학회지
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    • 제34권4호
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    • pp.1-11
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    • 2021
  • Objectives: Nephrotic syndrome is a kidney disorder, which is characterized by proteinuria, edema (swelling), and hyperlipidemia. Maydis Stigma (Corn silk) has been widely used in Asia as a traditional medicine and is known to have a diuretic effect and is used for the treatment of edema and indigestion. Methods: The aim of this study is to investigate the improvement effect of Maydis Stigma in treating nephrotic syndrome induced by puromycin aminonucleoside. Sprague-Dawley rats were intravenously injected with 75 mg/kg/day puromycin aminonucleoside, then treated with either Losartan or 200 mg/kg/day Maydis Stigma for seven days. Results: Maydis Stigma significantly decreased ascites and proteinuria level. Plasma levels of blood urea nitrogen (BUN) and plasma creatinine reduced significantly by Maydis Stigma. In addition, treatment with Maydis Stigma attenuated histological damage. Treatment with Maydis Stigma also restored podocin expression and reduced inflammation markers such as intracellular adhesion molecules (ICAM-1), monocyte chemotactic protein-1 (MCP-1), tumor necrosis factor alpha (TNF-α) and high-mobility group box-1 (HMGB1). Conclusions: Maydis Stigma ameliorates kidney injury in nephrotic syndrome rat models. Maydis Stigma exerts a renoprotective effect owing to its anti-inflammatory effects and reductions of ascites and proteinuria. Thus, these results indicate that Maydis Stigma is likely to be a promising agent in the treatment of nephrotic syndrome.

복잡계 과학 방법론을 활용한 한의학 연구: 현황과 전망 (Traditional Korean Medicine Research Using Methods in Complexity Science: Current Status and Prospect)

  • 장동엽;조나현;이기은;권영규;김창업
    • 동의생리병리학회지
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    • 제35권5호
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    • pp.151-161
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    • 2021
  • Traditional Korean medicine (TKM) takes a holistic view that emphasizes the balance between the elements constituting the human body or between the human body and the external environment. To investigate the holistic properties of TKM, here we propose to apply the methodology of complexity science to the TKM research. Complexity science is a discipline for studying complex systems with interactions between components that raise the behaviour as a whole which can be more than the sum of their parts. We first provide an introduction to the complexity science and its research methods, particularly focusing on network science and data science approaches. Next, we briefly present the current status of TKM research employing these methods. Finally, we provide suggestions for future research elucidating the underlying mechanism of TKM, both in terms of biomedicine and humanities.