1
|
Demirel S. Vasorelaxant effects of biochemical constituents of various medicinal plants and their benefits in diabetes. World J Diabetes 2024; 15:1122-1141. [PMID: 38983824 PMCID: PMC11229960 DOI: 10.4239/wjd.v15.i6.1122] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/30/2023] [Revised: 03/07/2024] [Accepted: 05/06/2024] [Indexed: 06/11/2024] Open
Abstract
Endothelial function plays a pivotal role in cardiovascular health, and dysfunction in this context diminishes vasorelaxation concomitant with endothelial activity. The nitric oxide-cyclic guanosine monophosphate pathway, prostacyclin-cyclic adenosine monophosphate pathway, inhibition of phosphodiesterase, and the opening of potassium channels, coupled with the reduction of calcium levels in the cell, constitute critical mechanisms governing vasorelaxation. Cardiovascular disease stands as a significant contributor to morbidity and mortality among individuals with diabetes, with adults afflicted by diabetes exhibiting a heightened cardiovascular risk compared to their non-diabetic counterparts. A plethora of medicinal plants, characterized by potent pharmacological effects and minimal side effects, holds promise in addressing these concerns. In this review, we delineate various medicinal plants and their respective biochemical constituents, showcasing concurrent vasorelaxant and anti-diabetic activities.
Collapse
Affiliation(s)
- Sadettin Demirel
- Medicine School, Physiology Department, Bursa Uludag University, Bursa 16059, Türkiye
| |
Collapse
|
2
|
Zymone K, Raudone L, Žvikas V, Jakštas V, Janulis V. Phytoprofiling of Sorbus L. Inflorescences: A Valuable and Promising Resource for Phenolics. PLANTS (BASEL, SWITZERLAND) 2022; 11:plants11243421. [PMID: 36559532 PMCID: PMC9780963 DOI: 10.3390/plants11243421] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/09/2022] [Revised: 11/28/2022] [Accepted: 12/06/2022] [Indexed: 05/27/2023]
Abstract
The leaves and fruits of various Sorbus L. genotypes have long ethnopharmacological and food-usage histories, but inflorescences are still underutilized and neglected materials with scarce phytochemical scientific evidence. The aim of this study was to determine the phenolic profiles of inflorescence extracts of 26 Sorbus species, genotypes, and cultivars. HPLC and UPLS with MS detection were applied, and coupled data revealed unique phytochemical phenolic profiles. Neochlorogenic and chlorogenic acids were the key compounds, reaching up to 5.8 mg/g of dw. Rutin, isoquercitrin, quercetin 3-O-malonylglucoside, isorhamnetin 3-O-rutinoside, sexangularetin derivative, and kaempferol acetyl hexoside were detected in all Sorbus inflorescence samples. Overall, high quantitative heterogeneity across the various Sorbus genotypes was found by profiling. Phenolic fingerprint profiles and sexangularetin derivatives could serve as markers in authenticity studies and quality control schemes. The species S. amurensis, S. arranensis, S. commixta, and S. discolor and the cultivars 'Chamsis Louing', 'Coral Beauty', and 'Edulis' could be used as target genotypes for production of smart and innovative inflorescence matrix-based ingredients.
Collapse
Affiliation(s)
- Kristina Zymone
- Department of Analytical and Toxicological Chemistry, Lithuanian University of Health Sciences, Sukileliu Av. 13, LT-50162 Kaunas, Lithuania
- Laboratory of Biopharmaceutical Research, Institute of Pharmaceutical Technologies, Lithuanian University of Health Sciences, Sukileliu Av. 13, LT-50162 Kaunas, Lithuania
| | - Lina Raudone
- Laboratory of Biopharmaceutical Research, Institute of Pharmaceutical Technologies, Lithuanian University of Health Sciences, Sukileliu Av. 13, LT-50162 Kaunas, Lithuania
- Department of Pharmacognosy, Lithuanian University of Health Sciences, Sukileliu Av. 13, LT-50162 Kaunas, Lithuania
| | - Vaidotas Žvikas
- Laboratory of Biopharmaceutical Research, Institute of Pharmaceutical Technologies, Lithuanian University of Health Sciences, Sukileliu Av. 13, LT-50162 Kaunas, Lithuania
| | - Valdas Jakštas
- Laboratory of Biopharmaceutical Research, Institute of Pharmaceutical Technologies, Lithuanian University of Health Sciences, Sukileliu Av. 13, LT-50162 Kaunas, Lithuania
- Department of Pharmacognosy, Lithuanian University of Health Sciences, Sukileliu Av. 13, LT-50162 Kaunas, Lithuania
| | - Valdimaras Janulis
- Department of Pharmacognosy, Lithuanian University of Health Sciences, Sukileliu Av. 13, LT-50162 Kaunas, Lithuania
| |
Collapse
|
3
|
Tang F, Yan HL, Wang LX, Xu JF, Peng C, Ao H, Tan YZ. Review of Natural Resources With Vasodilation: Traditional Medicinal Plants, Natural Products, and Their Mechanism and Clinical Efficacy. Front Pharmacol 2021; 12:627458. [PMID: 33867985 PMCID: PMC8048554 DOI: 10.3389/fphar.2021.627458] [Citation(s) in RCA: 19] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2020] [Accepted: 01/29/2021] [Indexed: 12/11/2022] Open
Abstract
For decades, chronic diseases including cardiovascular and cerebrovascular diseases (CCVDs) have plagued the world. Meanwhile, we have noticed a close association between CCVDs and vascular lesions, such as hypertension. More focus has been placed on TMPs and natural products with vasodilation and hypotension. TMPs with vasodilatory and hypotensive activities are mainly from Compositae, Lamiaceae, and Orchidaceae (such as V. amygdalina Del., T. procuinbens L., M. glomerata Spreng., K. galanga L., etc.) whereas natural products eliciting vasorelaxant potentials were primarily from flavonoids, phenolic acids and alkaloids (such as apigenin, puerarin, curcumin, sinomenine, etc.). Furthermore, the data analysis showed that the vasodilatory function of TMPs was mainly concerned with the activation of eNOS, while the natural products were primarily correlated with the blockage of calcium channel. Thus, TMPs will be used as alternative drugs and nutritional supplements, while natural products will be considered as potential therapies for CCVDs in the future. This study provides comprehensive and valuable references for the prevention and treatment of hypertension and CCVDs and sheds light on the further studies in this regard. However, since most studies are in vitro and preclinical, there is a need for more in-depth researches and clinical trials to understand the potential of these substances.
Collapse
Affiliation(s)
- Fei Tang
- State Key Laboratory of Characteristic Chinese Medicine Resources in Southwest China, Pharmacy College, Chengdu University of Traditional Chinese Medicine, Chengdu, China
| | - Hong-Ling Yan
- State Key Laboratory of Characteristic Chinese Medicine Resources in Southwest China, Pharmacy College, Chengdu University of Traditional Chinese Medicine, Chengdu, China
| | - Li-Xia Wang
- State Key Laboratory of Characteristic Chinese Medicine Resources in Southwest China, Pharmacy College, Chengdu University of Traditional Chinese Medicine, Chengdu, China
| | - Jin-Feng Xu
- State Key Laboratory of Characteristic Chinese Medicine Resources in Southwest China, Pharmacy College, Chengdu University of Traditional Chinese Medicine, Chengdu, China
| | - Cheng Peng
- State Key Laboratory of Characteristic Chinese Medicine Resources in Southwest China, Pharmacy College, Chengdu University of Traditional Chinese Medicine, Chengdu, China
| | - Hui Ao
- Innovative Institute of Chinese Medicine and Pharmacy, Chengdu University of Traditional Chinese Medicine, Chengdu, China
| | - Yu-Zhu Tan
- State Key Laboratory of Characteristic Chinese Medicine Resources in Southwest China, Pharmacy College, Chengdu University of Traditional Chinese Medicine, Chengdu, China
| |
Collapse
|
4
|
A novel cytotoxic activity of the fruit of Sorbus commixta against human lung cancer cells and isolation of the major constituents. J Funct Foods 2017. [DOI: 10.1016/j.jff.2017.01.003] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022] Open
|
5
|
Im NK, Lee DS, Lee SR, Jeong GS. Lupeol Isolated from Sorbus commixta Suppresses 1α,25-(OH)2D3-Mediated Osteoclast Differentiation and Bone Loss in Vitro and in Vivo. JOURNAL OF NATURAL PRODUCTS 2016; 79:412-420. [PMID: 26878936 DOI: 10.1021/acs.jnatprod.5b01088] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
Lupeol is a lupane-type triterpene isolated from Sorbus commixta, an oriental medicine used to treat arthritis and inflammatory diseases. However, the antiosteoporotic effects of S. commixta or any of its constituents have not been studied yet. In the present study, we have examined the effect of lupeol (a major active triterpenoid isolated from S. commixta) on osteoclastogenesis and sought to elucidate its underlying molecular mechanisms. We evaluated whether lupeol antagonized osteoclast differentiation and bone resorption. Lupeol markedly inhibited osteoclast differentiation and bone resorption activity through its effects on MAP kinases and transcription factors (NF-κB, NFATc1, and c-Fos) downstream of the osteoclast differentiation factor receptor RANK. Furthermore, in vivo efficacy of lupeol was confirmed by using an animal model of hypercalcemic mediated bone loss. Taken together, lupeol showed strong inhibitory effects on osteoclastogenesis. Supplementation with S. commixta and lupeol could be beneficial for bone health or osteoclast-related diseases such as osteoporosis, Paget's disease, osteolysis associated with periodontal disease, and multiple myeloma.
Collapse
Affiliation(s)
- Nam Kyung Im
- College of Pharmacy, Keimyung University , Daegu 704-701, Republic of Korea
| | - Dong-Sung Lee
- College of Pharmacy, Chosun University , Dong-gu, Gwangju, 61452, Republic of Korea
| | - Seong-Ryong Lee
- Department of Pharmacology, School of Medicine and Brain Research Institute, Keimyung University , Daegu 704-701, Republic of Korea
| | - Gil Saeng Jeong
- College of Pharmacy, Keimyung University , Daegu 704-701, Republic of Korea
| |
Collapse
|
6
|
Lee SM, Lee YJ, Choi JH, Kho MC, Yoon JJ, Shin SH, Kang DG, Lee HS. Gal-geun-dang-gwi-tang improves diabetic vascular complication in apolipoprotein E KO mice fed a western diet. BMC COMPLEMENTARY AND ALTERNATIVE MEDICINE 2014; 14:453. [PMID: 25416139 PMCID: PMC4247676 DOI: 10.1186/1472-6882-14-453] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/26/2014] [Accepted: 09/18/2014] [Indexed: 01/23/2023]
Abstract
BACKGROUND Gal-geun-dang-gwi-tang (GGDGT), an herbal medicine, is used to treat hypertension, stroke, and other inflammatory disorders in the clinical setting. Recently, GGDGT was recognized by the Korea Institute of Oriental Medicine. This study aimed to evaluate the effects of GGDGT in a diabetic atherosclerosis model using apolipoprotein E knockout (ApoE-/-) mice fed a Western diet. METHODS The mice were divided into four groups: control group, C57BL6J mice receiving a regular diet (RD); ApoE-/- group, ApoE-/- mice receiving a Western diet (WD); rosiglitazone group, ApoE-/- mice receiving rosiglitazone (WD + 10 mg · kg(-1) · day(-1)); GGDGT group, ApoE-/- mice receiving GGDGT (WD + 200 mg · kg(-1) · day(-1)). RESULTS Treatment with GGDGT significantly improved glucose tolerance and plasma lipid levels. In addition, GGDGT ameliorated acetylcholine-induced vascular relaxation of the aortic rings. Immunohistochemical staining showed that GGDGT suppressed intercellular adhesion molecule (ICAM)-1 expression; however, expression of endothelial nitric oxide synthase (eNOS) and insulin receptor substrate (IRS)-1 were restored in the thoracic aorta and skeletal muscle, respectively. CONCLUSIONS These findings suggest that GGDGT attenuates endothelial dysfunction via improvement of the nitric oxide (NO)-cyclic guanosine monophosphate (cGMP) signalling pathway and improves insulin sensitivity in diabetic atherosclerosis.
Collapse
|
7
|
Gaivelyte K, Jakstas V, Razukas A, Janulis V. Variation of quantitative composition of phenolic compounds in rowan (Sorbus aucuparia L.) leaves during the growth season. Nat Prod Res 2014; 28:1018-20. [DOI: 10.1080/14786419.2014.902819] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
Affiliation(s)
- Kristina Gaivelyte
- Department of Pharmacognosy, Lithuanian University of Health Sciences, Eiveniu str. 4, LT-50161 Kaunas, Lithuania
| | - Valdas Jakstas
- Department of Pharmacognosy, Lithuanian University of Health Sciences, Eiveniu str. 4, LT-50161 Kaunas, Lithuania
| | - Almantas Razukas
- Voke Branch of Lithuanian Research Centre for Agriculture and Forestry, Zalioji a. 2, Traku Voke, LT-02232 Vilnius, Lithuania
| | - Valdimaras Janulis
- Department of Pharmacognosy, Lithuanian University of Health Sciences, Eiveniu str. 4, LT-50161 Kaunas, Lithuania
| |
Collapse
|
8
|
Doinseunggitang ameliorates endothelial dysfunction in diabetic atherosclerosis. EVIDENCE-BASED COMPLEMENTARY AND ALTERNATIVE MEDICINE 2013; 2013:783576. [PMID: 24062791 PMCID: PMC3766992 DOI: 10.1155/2013/783576] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/23/2013] [Revised: 05/23/2013] [Accepted: 05/23/2013] [Indexed: 02/03/2023]
Abstract
Atherosclerosis, a chronic and progressive disease characterized by vascular inflammation, is a leading cause of death in diabetes patients. Doinseunggitang (DYSGT), traditional prescription, has been used for promoting blood circulation to remove blood stasis. The aim of this study was to investigate the beneficial effects of DYSGT on endothelial dysfunction in diabetic atherosclerosis animal model. Apolipoprotein E knockout (ApoE KO) mice fed on a Western diet were treated with DYSGT (200 mg/kg/day). DYSGT significantly lowered blood glucose level and glucose tolerance as well as systolic blood pressure. Metabolic parameter showed that DYSGT markedly decreased triglyceride and LDL-cholesterol levels. In the thoracic aorta, the impairment of vasorelaxation response to acetylcholine and atherosclerotic lesion was attenuated by DYSGT. Furthermore, DYSGT restored the reduction of endothelial nitric oxide synthase (eNOS) expression, leading to the inhibition of intracellular adhesion molecule-1 (ICAM-1) and endothelin-1 (ET-1) expression. In conclusion, DYSGT improved the development of diabetic atherosclerosis via attenuation of the endothelial dysfunction, possibly by inhibiting ET-1, cell adhesion molecules, and lesion formation. Therefore, these results suggest that Korean traditional prescription Doinseunggitang may be useful in the treatment and prevention of diabetic vascular complications.
Collapse
|
9
|
Gaivelyte K, Jakstas V, Razukas A, Janulis V. Variation in the Contents of Neochlorogenic Acid, Chlorogenic Acid and Three Quercetin Glycosides in Leaves and Fruits of Rowan (Sorbus) Species and Varieties from Collections in Lithuania. Nat Prod Commun 2013. [DOI: 10.1177/1934578x1300800819] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
Abstract
Our research aim was to investigate the quantitative composition of neochlorogenic acid, chlorogenic acid, rutin, hyperoside and isoquercitrin in leaves and fruit of introduced rowan plants to Lithuania using a HPLC method. In leaf and fruit samples, quantitative estimation of neochlorogenic acid (in leaf samples 1.11–11.49 mg/g, in fruit samples 0.93–5.43 mg/g), chlorogenic acid (in leaf samples 2.74–21.91 mg/g, in fruit samples 0.55–7.50 mg/g), rutin (in leaf samples 0.03–4.88 mg/g, in fruit samples 0.02-0.39 mg/g), hyperoside (in leaf samples 0.15–7.44 mg/g, in fruit samples 0.02–1.19 mg/g) and isoquercitrin (in leaf samples 0.75–5.24 mg/g, in fruit samples 0.02-0.65 mg/g) was performed. In leaf samples, the total content of identified phenolic compounds ranged from 7.18 to 35.74 mg/g. In fruit, raw material total content of neochlorogenic acid, chlorogenic acid and identified flavonoids varied from 2.24 to 11.19 mg/g. Comparison of raw material samples of Sorbus species according to their quantitative composition of identified phenolic compounds using cluster analysis singularized S. commixta leaf and fruit samples. These contained the highest contents of chlorogenic acid, hyperoside and isoquercitrin, but also the lowest contents of neochlorogenic acid and rutin. The highest contents of neochlorogenic acid were recorded for S. lancifolia leaves, and of rutin for S. anglica leaves.
Collapse
Affiliation(s)
- Kristina Gaivelyte
- Department of Pharmacognosy, Lithuanian University of Health Sciences, Kaunas, Lithuania
| | - Valdas Jakstas
- Department of Pharmacognosy, Lithuanian University of Health Sciences, Kaunas, Lithuania
| | - Almantas Razukas
- Voke branch of Lithuanian Research Centre for Agriculture and Forestry, Vilnius, Lithuania
| | - Valdimaras Janulis
- Department of Pharmacognosy, Lithuanian University of Health Sciences, Kaunas, Lithuania
| |
Collapse
|
10
|
Lee K, Jung J, Yang G, Ham I, Bu Y, Kim H, Choi HY. Endothelium-Independent Vasorelaxation Effects of Sigesbeckia glabrescens
(Makino) Makino on Isolated Rat Thoracic Aorta. Phytother Res 2012; 27:1308-12. [DOI: 10.1002/ptr.4874] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/22/2011] [Revised: 09/18/2012] [Accepted: 10/04/2012] [Indexed: 11/09/2022]
Affiliation(s)
- Kyungjin Lee
- Department of Herbology, College of Korean Medicine; Kyung Hee University; 1 Hoegi-dong Dongdaemun-gu Seoul 130-701 Republic of Korea
| | - Jinho Jung
- Department of Herbology, College of Korean Medicine; Kyung Hee University; 1 Hoegi-dong Dongdaemun-gu Seoul 130-701 Republic of Korea
| | - Gabsik Yang
- Department of Herbology, College of Korean Medicine; Kyung Hee University; 1 Hoegi-dong Dongdaemun-gu Seoul 130-701 Republic of Korea
| | - Inhye Ham
- Department of Herbology, College of Korean Medicine; Kyung Hee University; 1 Hoegi-dong Dongdaemun-gu Seoul 130-701 Republic of Korea
| | - Youngmin Bu
- Department of Herbology, College of Korean Medicine; Kyung Hee University; 1 Hoegi-dong Dongdaemun-gu Seoul 130-701 Republic of Korea
| | - Hocheol Kim
- Department of Herbology, College of Korean Medicine; Kyung Hee University; 1 Hoegi-dong Dongdaemun-gu Seoul 130-701 Republic of Korea
| | - Ho-Young Choi
- Department of Herbology, College of Korean Medicine; Kyung Hee University; 1 Hoegi-dong Dongdaemun-gu Seoul 130-701 Republic of Korea
| |
Collapse
|
11
|
Hwang SM, Kim JS, Lee YJ, Yoon JJ, Lee SM, Kang DG, Lee HS. Anti-Diabetic Atherosclerosis Effect of Prunella vulgaris in db/db Mice with Type 2 Diabetes. THE AMERICAN JOURNAL OF CHINESE MEDICINE 2012; 40:937-51. [DOI: 10.1142/s0192415x12500693] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
Diabetes mellitus is the leading cause of vascular complications such as atherosclerosis. This study was designed to investigate whether Prunella vulgaris (APV) would inhibit diabetic atherosclerosis in db/db mice with type 2 diabetes. The db/db mice were treated with high fat/high cholesterol (HFHC) diet and an aqueous extract of APV (100 and 200 mg/kg/day) for eight weeks to examine the long-term effect on metabolic abnormalities and diabetic atherosclerosis. APV treatment markedly lowered blood glucose and systolic blood pressure. The db/db mice experienced an increase in blood urea nitrogen as well as a decrease of creatinine clearance, the latter of which was restored by treatment with APV. Treatment with APV markedly decreased total plasma cholesterol, triglyceride, and LDL-cholesterol and also increased the HDL-cholesterol. In addition, malondialdehyde and TGF-β1 were decreased by treatment of APV. On the other hand, total NO level was decreased in db/db mice. However, the NO level was increased by treatment with APV, suggesting an association with vascular dysfunction. Vascular relaxation of aortic rings by acetylcholine or SNP-inducement was ameliorated by APV in a dose-dependent manner. Damage of vascular intima and hypertrophic of media were observed in db/db mice; however its dysfunction was improved by the treatment of APV. APV treatment significantly reduced the aortic expressions of ICAM-1, VCAM-1, ET-1, and nitrotyrosine. Furthermore, expression of eNOS in aortic was remarkably increased by APV treatment. Taken together, APV suppressed hyperglycemia and diabetic vascular dysfunction in HFHC diet-db/db mice. The present data suggest that Prunella vulgaris may prevent development of diabetic atherosclerosis.
Collapse
Affiliation(s)
- Sun Mi Hwang
- College of Oriental Medicine and Professional Graduate School of Oriental Medicine, Republic of Korea
- Center for Bioanalysis, Division of Metrology for Quality of Life, Korea Research Institute of Standards and Science, Daejeon 305-340, Republic of Korea
| | - Jin Sook Kim
- Korea Institute of Oriental Medicine, Daejeon 305-811, Republic of Korea
| | - Yun Jung Lee
- College of Oriental Medicine and Professional Graduate School of Oriental Medicine, Republic of Korea
- Hanbang Body-Fluid Research Center, Wonkwang University, Jeonbuk 570-749, Republic of Korea
| | - Jung Joo Yoon
- College of Oriental Medicine and Professional Graduate School of Oriental Medicine, Republic of Korea
- Hanbang Body-Fluid Research Center, Wonkwang University, Jeonbuk 570-749, Republic of Korea
| | - So Min Lee
- College of Oriental Medicine and Professional Graduate School of Oriental Medicine, Republic of Korea
- Hanbang Body-Fluid Research Center, Wonkwang University, Jeonbuk 570-749, Republic of Korea
| | - Dae Gill Kang
- College of Oriental Medicine and Professional Graduate School of Oriental Medicine, Republic of Korea
- Hanbang Body-Fluid Research Center, Wonkwang University, Jeonbuk 570-749, Republic of Korea
| | - Ho Sub Lee
- College of Oriental Medicine and Professional Graduate School of Oriental Medicine, Republic of Korea
- Hanbang Body-Fluid Research Center, Wonkwang University, Jeonbuk 570-749, Republic of Korea
| |
Collapse
|
12
|
Lee YJ, Choi DH, Cho GH, Kim JS, Kang DG, Lee HS. Arctium lappa ameliorates endothelial dysfunction in rats fed with high fat/cholesterol diets. BMC COMPLEMENTARY AND ALTERNATIVE MEDICINE 2012; 12:116. [PMID: 22866890 PMCID: PMC3517347 DOI: 10.1186/1472-6882-12-116] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/23/2011] [Accepted: 07/30/2012] [Indexed: 01/04/2023]
Abstract
Background Arctium lappa L. (Asteraceae), burdock, is a medicinal plant that is popularly used for treating hypertension, gout, hepatitis, and other inflammatory disorders. This study was performed to test the effect of ethanol extract of Arctium lappa L. (EAL) seeds on vascular reactivity and inflammatory factors in rats fed a high fat/cholesterol diet (HFCD). Method EAL-I (100 mg·kg−1/day), EAL-II (200 mg·kg−1/day), and fluvastatin (3 mg·kg−1/day) groups initially received HFCD alone for 8 weeks, with EAL supplementation provided during the final 6 weeks. Results Treatment with low or high doses of EAL markedly attenuated plasma levels of triglycerides and augmented plasma levels of high-density lipoprotein (HDL) in HFCD-fed rats. Chronic treatment with EAL markedly reduced impairments of acetylcholine (ACh)-induced relaxation of aortic rings. Furthermore, chronic treatment with EAL significantly lowered systolic blood pressure (SBP) and maintained smooth and flexible intimal endothelial layers in HFCD-fed rats. Chronic treatment with EAL suppressed upregulation of intercellular adhesion molecule (ICAM)-1, vascular cell adhesion molecule (VCAM)-1, and E-selectin in the aorta. Chronic treatment with EAL also suppressed increases in matrix metalloproteinase (MMP)-2 expression. These results suggested that EAL can inhibit HFCD-induced vascular inflammation in the rat model. Conclusion The present study provides evidence that EAL ameliorates HFCD-induced vascular dysfunction through protection of vascular relaxation and suppression of vascular inflammation.
Collapse
|
13
|
Choi DH, Lee YJ, Kim JS, Kang DG, Lee HS. Cynanchum wilfordii ameliorates hypertension and endothelial dysfunction in rats fed with high fat/cholesterol diets. Immunopharmacol Immunotoxicol 2012; 34:4-11. [PMID: 22176675 DOI: 10.3109/08923973.2011.569889] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Abstract
Hypercholesterolemia increases the incidence of atherosclerosis and its pathologic complications. This study was performed to test the effect of an ethanol extract of Cynanchum wilfordii (ECW) on vascular dysfunction in rats fed with high fat/cholesterol diets (HFCD). Male rats were fed a HFCD consisting of 7.5% cocoa butter and 1.25% cholesterol, with or without 100, 200 mg/day/kg ECW. Rats fed with HFCD increased body weight associated with an increase in plasma low-density lipoprotein (LDL) cholesterol level. Chronic ECW treatment in HFCD-fed rats lessened LDL cholesterol and triglyceride levels as well as elevated high-density lipoprotein (HDL) cholesterol. Chronic ECW treatment recovered the HFCD-induced increase in systolic blood pressure, maintained smooth and soft intima endothelial layers by the decrease of intima-media thickness. ECW significantly recovered the diet-induced decrease in vasorelaxation to acetylcholine, high-dose ECW apparently increased vasorelaxation response to sodium nitroprusside in rats fed with HFCD. ECW clearly restored the HFCD-induced reduction in endothelial nitric oxide (NO) synthase expression and Akt expression levels in aortic tissue, leading to improve endothelial function through an increase in endothelium-derived NO production. Furthermore, treatment of ECW significantly recovered the HFCD-induced decrease in aortic cGMP levels in rats. These findings suggest that ECW ameliorates hypertension and endothelial dysfunction via improvement of NO/cGMP signaling pathway in aortic tissue of rats fed with HFCD, suggesting a vascular protective role for this herb in the treatment and prevention of atherosclerotic vascular disease.
Collapse
Affiliation(s)
- Deok Ho Choi
- College of Oriental Medicine and Professional Graduate School of Oriental Medicine, Wonkwang University, Shinyong-dong, Iksan, Jeonbuk, Republic of Korea
| | | | | | | | | |
Collapse
|
14
|
Lee YJ, Choi DH, Kim EJ, Kim HY, Kwon TO, Kang DG, Lee HS. Hypotensive, Hypolipidemic, and Vascular Protective Effects of Morus alba L. in Rats Fed an Atherogenic Diet. THE AMERICAN JOURNAL OF CHINESE MEDICINE 2012; 39:39-52. [DOI: 10.1142/s0192415x11008634] [Citation(s) in RCA: 48] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
Abstract
Morus alba L. has been used in traditional Chinese medicine and almost all parts of this plant are useful in cardiovascular, liver and spleen disorders. The present study was designed to investigate the inhibitory effect of a water extract from Morus alba L. (WMA) on vascular dysfunction in rat models fed a high fat and high cholesterol diet. Male rats were fed an atherogenic diet consisting of food with 7.5% cocoa butter and 1.25% cholesterol, with or without 100 or 200 mg/day/kg WMA, for 14 weeks. Chronic treatment with low (100 mg/kg/day) or high (200 mg/day/kg) doses of WMA markedly attenuated hypertension and the impairments of acetylcholine-induced relaxation of aortic rings in rats fed an atherogenic diet. WMA reduced intima/media thickness in rats fed an atherogenic diet. WMA improved plasma levels of triglyceride (TG) and augmented plasma levels of high-density lipoprotein (HDL) and plasma low-density lipoprotein (LDL), but did not affect blood glucose levels. Interestingly, WMA suppressed increased cell adhesion molecules such as E-selectin, vascular cell adhesion molecule-1 (VCAM-1), and intracellular adhesion molecule-1 (ICAM-1) expression in the aorta. Taken together, these results suggested that Morus alba L. could improve an atherogenic diet-induced hypertension, hyperlipidemia, and vascular dysfunction through inhibition of cell adhesion molecules expression and induction of vascular relaxation.
Collapse
Affiliation(s)
- Yun Jung Lee
- Professional Graduate School of Oriental Medicine, Wonkwang University, Jeonbuk, 570-749, Republic of Korea
- Hanbang Body-Fluid Research Center, Wonkwang University, Jeonbuk, 570-749, Republic of Korea
| | - Deok Ho Choi
- Professional Graduate School of Oriental Medicine, Wonkwang University, Jeonbuk, 570-749, Republic of Korea
| | - Eun Ju Kim
- Professional Graduate School of Oriental Medicine, Wonkwang University, Jeonbuk, 570-749, Republic of Korea
- Hanbang Body-Fluid Research Center, Wonkwang University, Jeonbuk, 570-749, Republic of Korea
| | - Hye Yoom Kim
- Professional Graduate School of Oriental Medicine, Wonkwang University, Jeonbuk, 570-749, Republic of Korea
- Hanbang Body-Fluid Research Center, Wonkwang University, Jeonbuk, 570-749, Republic of Korea
| | - Tae Oh Kwon
- College of Life Science and Natural Resources, Wonkwang University, Jeonbuk, 570-749, Republic of Korea
| | - Dae Gill Kang
- Professional Graduate School of Oriental Medicine, Wonkwang University, Jeonbuk, 570-749, Republic of Korea
- Hanbang Body-Fluid Research Center, Wonkwang University, Jeonbuk, 570-749, Republic of Korea
| | - Ho Sub Lee
- Professional Graduate School of Oriental Medicine, Wonkwang University, Jeonbuk, 570-749, Republic of Korea
- Hanbang Body-Fluid Research Center, Wonkwang University, Jeonbuk, 570-749, Republic of Korea
| |
Collapse
|
15
|
Choi DH, Lee YJ, Oh HC, Cui YL, Kim JS, Kang DG, Lee HS. Improved endothelial dysfunction by Cynanchum wilfordii in apolipoprotein E(-/-) mice fed a high fat/cholesterol diet. J Med Food 2011; 15:169-79. [PMID: 22082065 DOI: 10.1089/jmf.2010.1222] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022] Open
Abstract
Cynanchum wilfordii is used in traditional Chinese medicine with almost all parts of this plant considered beneficial for various vascular diseases. This study was performed to evaluate the effect of an ethanol extract of C. wilfordii (ECW) on vascular dysfunction in apolipoprotein E (apoE)(-/-) mice fed with high fat/cholesterol diets (HFCDs). The apoE(-/-) mice were fed HFCD consisting of 7.5% cocoa butter and 1.25% cholesterol, with or without 100 or 200 mg/day/kg ECW. Chronic ECW treatment significantly lessened the level of low-density lipoprotein (P<.05) and elevated that of high-density lipoprotein-cholesterol (P<.01). Chronic ECW treatment normalized the HFCD-induced increase in systolic blood pressure, maintained smooth and soft intimal endothelial layers, and decreased intima-media thickness in aortic sections of HFCD-fed apoE(-/-) mice. ECW significantly restored the diet-induced decrease in vasorelaxation response to acetylcholine; however, the response to sodium nitroprusside did not change. ECW clearly restored the HFCD-induced reduction in endothelial nitric oxide synthase expression levels in aortic tissue, leading to decreased vascular inflammation through an inhibition of cellular adhesion molecules such as E-selectin, vascular cell adhesion molecule-1, and intracellular adhesion molecule-1 as well as endothelin-1 (ET-1) expression. In conclusion, ECW ameliorates endothelial dysfunction via improvement of the nitric oxide/cyclic GMP signaling pathway in a diet/genetic model of hyperlipidemia. ECW also substantially inhibited the development of atherosclerosis, possibly by inhibiting ET-1, cell adhesion molecules, and lesion formation, suggesting a vascular protective role for this herb in the treatment and prevention of atherosclerotic vascular disease.
Collapse
Affiliation(s)
- Deok Ho Choi
- Hanbang Body-fluid Research Center, Wonkwang University, Iksan, Jeonbuk, Korea
| | | | | | | | | | | | | |
Collapse
|
16
|
Uncovering the Vasorelaxant Effect Induced by Vale do São Francisco Red Wine: A Role for Nitric Oxide. J Cardiovasc Pharmacol 2011; 57:696-701. [DOI: 10.1097/fjc.0b013e318217db1f] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
|
17
|
Lee JK, Kang DG, Lee HS. Vascular relaxation induced by aqueous extract of Lespedeza cuneata via the NO-cGMP pathway. J Nat Med 2011; 66:17-24. [PMID: 21607822 DOI: 10.1007/s11418-011-0546-6] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2010] [Accepted: 05/02/2011] [Indexed: 10/18/2022]
Abstract
The aqueous extract of Lespedeza cuneata G. Don. (ALC) induced vasorelaxation of phenylephrine precontracted aorta in a dose-dependent manner. This effect disappeared in the absence of functional endothelium. Pretreatment of the aortic tissues with N(G)-nitro-L-arginine methyl ester (L-NAME), or 1H-[1,2,4]-oxadiazole-[4,3-α]-quinoxalin-1-one (ODQ) blocked ALC-induced vascular relaxation. Incubation of endothelium-intact thoracic aortic rings with ALC increased cGMP production. ALC-induced cGMP production was blocked by pretreatment with L-NAME or ODQ. ALC-induced vascular relaxation was also markedly attenuated by addition of verapamil or diltiazem, but was not blocked by pretreatment with indomethacine, glibenclamide, tetraethylammonium, atropine, or propranolol. The results suggest that ALC dilates vascular smooth muscle via endothelium-dependent NO-cGMP signaling.
Collapse
Affiliation(s)
- Jun Kyoung Lee
- College of Oriental Medicine and Hanbang Body-fluid Research Center, Wonkwang University, Iksan, Jeonbuk 570-749, Republic of Korea
| | | | | |
Collapse
|
18
|
Assessment of the content of phenolics and antioxidant action of inflorescences and leaves of selected species from the genus Sorbus sensu stricto. Molecules 2010; 15:8769-83. [PMID: 21127463 PMCID: PMC6259135 DOI: 10.3390/molecules15128769] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/05/2010] [Revised: 11/26/2010] [Accepted: 11/30/2010] [Indexed: 01/30/2023] Open
Abstract
In order to find new sources of natural antioxidants, the antioxidant potential of 70% methanolic extracts from the inflorescences and leaves of 16 species from the genus Sorbus s.s. was evaluated using two complementary invitro test systems: the DPPH (2,2-diphenyl-1-picrylhydrazyl) radical-scavenging assay and the AAPH [2,2′-azobis-(2-amidinopropane)dihydrochloride]-induced linoleic acid (LA) peroxidation test. The radical-scavenging capacities of the extracts towards the DPPH radical were in the range of 0.25−0.86 millimolar Trolox® equivalents/g dry weight. They were significantly correlated (r = -0.8089, p < 0.001) with the results of the LA-peroxidation test, indicating the Sorbus extracts to be universal antioxidants. Significant linear correlations were also found between the different antioxidant potentials and total phenolic contents as estimated by the Folin-Ciocalteu method and further verified by serial determinations of proanthocyanidins, chlorogenic acid isomers and flavonoids (|r| in the range of 0.71−0.95, p < 0.001). Cluster analysis of the data matrix identified the ten samples (inflorescences of S. aucuparia, S. pohuashanensis, S. decora, S. koehneana, S. commixta, S. gracilis, and S. sitchensis, and the leaves of S. wilfordii, S. pogonopetala, and S. gracilis) exhibiting the highest antioxidant activity and total phenolic levels and therefore the greatest potential as effective sources for natural health products.
Collapse
|
19
|
Bhatt LR, Bae MS, Kim BM, Oh GS, Chai KY. A chalcone glycoside from the fruits of Sorbus commixta Hedl. Molecules 2009; 14:5323-7. [PMID: 20032895 PMCID: PMC6255035 DOI: 10.3390/molecules14125323] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2009] [Revised: 12/15/2009] [Accepted: 12/16/2009] [Indexed: 11/21/2022] Open
Abstract
Sorbus commixta Hedl. (Rosaceae) has been traditionally used in oriental countries for the treatment of asthma and other bronchial disorders. In this study, a chalcone glycoside was isolated from the ethyl acetate extract of the fruits of this plant. The compound was identified as neosakuranin based on the spectroscopic analysis and comparion with literature data. This is the first report of isolation of neosakuranin from Sorbus commixta.
Collapse
Affiliation(s)
- Lok Ranjan Bhatt
- Department of Bionanochemistry, School of Natural Sciences, Wonkwang University, Iksan, Chonbuk 570-749, Korea; E-Mails: (L.R.B.); (M.S.B.); (B.M.K.)
| | - Moon Sung Bae
- Department of Bionanochemistry, School of Natural Sciences, Wonkwang University, Iksan, Chonbuk 570-749, Korea; E-Mails: (L.R.B.); (M.S.B.); (B.M.K.)
| | - Bo Mi Kim
- Department of Bionanochemistry, School of Natural Sciences, Wonkwang University, Iksan, Chonbuk 570-749, Korea; E-Mails: (L.R.B.); (M.S.B.); (B.M.K.)
| | - Gi-Su Oh
- Vestibulocochlear Research Center, School of Medicine, Wonkwang University, Iksan, Chonbuk 570-749, Korea; E-Mail: (G.-S.O.)
| | - Kyu Yun Chai
- Department of Bionanochemistry, School of Natural Sciences, Wonkwang University, Iksan, Chonbuk 570-749, Korea; E-Mails: (L.R.B.); (M.S.B.); (B.M.K.)
- Author to whom correspondence should be addressed; E-Mail: ; Tel.: +82-63-850-6230; Fax: +82-63-841-4893
| |
Collapse
|
20
|
Del Valle-Mondragón L, Tenorio-López FA, Torres-Narváez JC, Zarco-Olvera G, Pastelín-Hernández G. Coronary vasodilator activity of vulgarenol, a sesquiterpene isolated from Magnolia grandiflora, and its possible mechanism. Phytother Res 2009; 23:666-71. [PMID: 19107855 DOI: 10.1002/ptr.2696] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Abstract
The aim of this study was to investigate the biodynamic effects of vulgarenol, a sesquiterpene isolated from Magnolia grandiflora flower petals and its possible mechanism on the Langendorff isolated and perfused heart model. Vulgarenol (5 microm) caused a statistically significant decrease in coronary vascular resistance (15.21 +/- 6.00 dyn s cm(-5) vs 36.80 +/- 5.01 dyn s cm(-5), control group), increased nitric oxide release (223.01 +/- 8.76 pmol/mL vs 61.00 +/- 12.00 pmol/mL, control group) and cyclic guanosine monophosphate accumulation in left ventricular tissue samples (142.17 +/- 8.41 pmol/mg of tissue vs 43.94 +/- 5.00 pmol/mg of tissue, control group). Pre-treatment with 3 microm gadolinium chloride hexahydrate, 100 microm N(omega)-nitro-L-arginine methyl ester hydrochloride, and 10 microm 1H-[1,2,4]oxadiazolo[4,2-a]quinoxalin-1-one significantly abolished the vulgarenol-induced coronary vascular resistance decrease, nitric oxide increased release and cGMP accumulation in left ventricular tissue samples. The results support the fact that nitric oxide and cyclic guanosine monophosphate are likely involved in the endothelium-dependent coronary vasodilation.
Collapse
Affiliation(s)
- L Del Valle-Mondragón
- Departamento de Farmacología, Instituto Nacional de Cardiología Ignacio Chávez, Tlalpan, México
| | | | | | | | | |
Collapse
|
21
|
Kang DG, Sohn EJ, Lee AS, Kim JS, Lee DH, Lee HS. Methanol extract of Sorbus commixta cortex prevents vascular inflammation in rats with a high fructose-induced metabolic syndrome. THE AMERICAN JOURNAL OF CHINESE MEDICINE 2007; 35:265-77. [PMID: 17436367 DOI: 10.1142/s0192415x07004801] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
Abstract
Feeding high fructose (Frc) to rats induces a moderate increase in blood pressure, which is associated with insulin resistance. The present study was designed to evaluate the effect of the methanol extract of Sorbus commixta cortex (MSC) on vascular inflammation in a rat model of the metabolic syndrome induced by a high Frc-diet. Male Sprague-Dawley rats were divided into 4 groups and treated for 7 weeks as follows: 1) control, 2) high Frc-diet group, 3) Frc/MSC1 group; high Frc-diet group treated with MSC (100 mg/kg/day), and 4) Frc/MSC2 group; high Frc-diet group treated with MSC (200 mg/kg/day). High Frc-induced decreases of the expression level of aortic endothelial nitric oxide synthase (ecNOS) while the production of cyclic GMP (cGMP) was restored by treatment with MSC. On the contrary, increases of the expression level of endothelin-1 (ET-1) in the aorta, the transcription factor, the cytokine related with vascular inflammation, and the adhesion molecules were suppressed by MSC treatment. Moreover, MSC treatment was shown to lessen the thickening noted in the aortic intima and media of the high Frc-diet group. Our findings suggest that MSC may have an anti-vascular inflammatory effect on rats with a high Frc-induced metabolic syndrome.
Collapse
Affiliation(s)
- Dae Gill Kang
- Professional Graduate School of Oriental, Wonkwang University, Iksan, Jeonbuk, 570-749, Korea
| | | | | | | | | | | |
Collapse
|
22
|
Kang DG, Cao LH, Lee JK, Choi DH, Kim SJ, Lee H, Kim JS, Lee HS. Endothelium-dependent induction of vasorelaxation by the butanol extract of Phellinus igniarius in isolated rat aorta. THE AMERICAN JOURNAL OF CHINESE MEDICINE 2006; 34:655-65. [PMID: 16883636 DOI: 10.1142/s0192415x06004181] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
Abstract
The butanol extract of Phellinus igniarius (BPI) induced relaxation of the phenylephrin e-precontracted rat aorta in a dose-dependent manner, and its effect was abolished by the removal of functional endothelium. Pretreatment of the aortic tissues with N(G)-nitro-L-arginine methyl ester (L-NAME), methylene blue, or 1H-[1,2,4]-oxadiazole-[4,3-alpha]-quinoxalin1-one (ODQ) inhibited the vascular relaxation induced by BPI. BPI-induced vascular relaxations were also markedly attenuated by the addition of verapamil or diltiazem, while the relaxant effect of BPI was not blocked by pretreatment with indomethacine, glibenclamide, tetraethylammonium (TEA), atropine, or propranolol. Incubation of endothelium-intact rat aorta with BPI increased the production of cGMP in a dose-dependent manner. These results suggest that BPI dilates vascular smooth muscle via endothelium-dependent nitric oxide-cGMP signaling pathway, with the possible involvement of L-type Ca(2+) channels.
Collapse
Affiliation(s)
- Dae Gill Kang
- Professional Graduate School of Oriental Medicine, Research Institute (MeRRI), Wonkwang University, Iksan, Jeonbuk, 570-749, Republic of Korea
| | | | | | | | | | | | | | | |
Collapse
|
23
|
Lee SO, Lee HW, Lee IS, Im HG. The pharmacological potential of Sorbus commixta cortex on blood alcohol concentration and hepatic lipid peroxidation in acute alcohol-treated rats. J Pharm Pharmacol 2006; 58:685-93. [PMID: 16640838 DOI: 10.1211/jpp.58.5.0014] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Abstract
The effect of Sorbus commixta cortex, a traditional herbal medicine used for the treatment of bronchitis, gastritis and dropsy, on blood alcohol concentration (BAC) and hepatic lipid peroxidation was examined in acute alcohol-treated rats. A 30-min pretreatment with a methanol extract of S. commixta cortex (SC) at concentrations higher than 200 mg kg(-1) resulted in a significant decrease in BAC and the ethyl acetate fraction (SE) of the extract showed the highest potency, with a maximum of a 46% decrease at 150 mg kg(-1) 2 h after alcohol administration (3.0 g kg(-1)) compared with the control group (P < 0.005). The rapid reduction in BAC did not appear to be due to the protection or activation of hepatic alcohol dehydrogenase (ADH) activity by SE. Hepatic malondialdehyde (MDA) levels were significantly increased by acute alcohol administration within 6 h, although pretreatment with the SE caused a significant decrease in MDA levels compared with alcohol treatment alone. Hepatic glutathione (GSH) levels and superoxide dismutase (SOD) activity remained unchanged by alcohol, SE alone or by the combined treatment of alcohol and SE. However, catalase activity was significantly reduced by acute alcohol administration and pretreatment with the SE led to significant protection of its activity. These results suggest that pretreatment with SE reduces hepatic lipid peroxidation by decreasing the bioavailability of alcohol and its oxidative metabolites, such as H2O2, at least partly, through the protection of hepatic catalase in acute alcohol-treated rats.
Collapse
Affiliation(s)
- Syng-Ook Lee
- Department of Food Science and Technology and The Center for Traditional Microorganism Resources (TMR), Keimyung University, Daegu 704-701, Republic of Korea
| | | | | | | |
Collapse
|
24
|
Sohn EJ, Kang DG, Mun YJ, Woo WH, Lee HS. Anti-atherogenic effects of the methanol extract of Sorbus cortex in atherogenic-diet rats. Biol Pharm Bull 2005; 28:1444-9. [PMID: 16079490 DOI: 10.1248/bpb.28.1444] [Citation(s) in RCA: 28] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
The present study was designed to examine whether the methanol extract of Sorbus commixta cortex (MSC) could prevent the development of atherosclerosis through regulating the vascular nitric oxide (NO) and endothelin-1 (ET-1) systems in atherogenic-diet rats. Our findings show that aortic NO production as well as endothelial nitric oxide synthase (ecNOS) expression was significantly decreased in atherogenic-diet rats compared with those in the control group. Aortic ET-1 expression was augmented in rats fed an atherogenic-diet while NF-kappaB p65 was upregulated. Treatment of atherogenic-diet rats with either low (100 mg/kg/d) or high (200 mg/kg/d) doses of MSC led not only to significant increases in the aortic NOS/NO system, but also to decreases in aortic ET-1 expression. The aortic expression level of NF-kappaB p65 was also attenuated in atherogenic-diet rats by chronic treatment with low or high doses of MSC. Atherogenic-diet induced increases in the expression of adhesion molecules including intercellular adhesion molecules-1 (ICAM-1), vascular cell adhesion molecule-1 (VCAM-1), and E-selectin were markedly decreased by treatment with MSC. From the histopathological examination, MSC treatment was shown to lessen the thickening noted in the aortic intima and media of the atherogenic-diet rats. These results suggest that MSC affects the atherogenic process via the suppression of proinflammatory and adhesion molecules in atherogenic-diet rats, which may be, at least in part, causally related with the regulation of vasoactive systems such as the NO and ET-1 systems.
Collapse
Affiliation(s)
- Eun Jin Sohn
- Professional Graduate School of Oriental Medicine, Wonkwang University, Iksan, Jeonbuk 570-749, Korea
| | | | | | | | | |
Collapse
|
25
|
Sohn EJ, Kang DG, Choi DH, Lee AS, Mun YJ, Woo WH, Kim JS, Lee HS. Effect of methanol extract of Sorbus cortex in a rat model of L-NAME-induced atherosclerosis. Biol Pharm Bull 2005; 28:1239-43. [PMID: 15997106 DOI: 10.1248/bpb.28.1239] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Chronic inhibition of nitric oxide (NO) synthesis by administration of high dose of N(G)-nitro-L-arginine methylester (L-NAME) induces vascular inflammation and subsequent atherosclerosis. We aimed to investigate whether the methanol extract of Sorbus commixta cortex (MSC) is able to prevent inflammatory process in a rat model of L-NAME-induced atherosclerosis. Chronic treatment with low or high doses of MSC prevented the L-NAME-induced increase in monocyte chemoattractant protein-1 (MCP-1) and nuclear factor-kappaB (NF-kappaB) p65 expressions as well as adhesion molecules including intercellular adhesion molecule-1 (ICAM-1) and vascular cell adhesion molecule-1 (VCAM-1), and E-selectin in aorta. In addition, increased endothelin-1 (ET-1) and angiotensin converting enzyme (ACE) expressions and decreased endothelial cell NO synthase (ecNOS) expression in aorta from L-NAME treated group was reversed by treatment with MSC. From the histological examination, aortic segment from the L-NAME-treated rats revealed a thickening of intima and media, which was ameliorated by treatment with MSC. In conclusion, our results indicate that MSC can prevent atherosclerosis by inhibiting vascular over-expressions of vasoactive materials, pro-inflammatory transcription factor, and adhesion molecules and by augmenting ecNOS in chronic L-NAME-treated rat model.
Collapse
Affiliation(s)
- Eun Jin Sohn
- Professional Graduate School of Oriental Medicine and Medicinal Resources Research Institute (MeRRI), Wonkwang University, Jeonbuk, Republic of Korea
| | | | | | | | | | | | | | | |
Collapse
|