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Lee HS, Kim HY, Ahn YM, Cho KW. Herbal medicine Oryeongsan (Wulingsan): Cardio-renal effects via modulation of renin-angiotensin system and atrial natriuretic peptide system. Integr Med Res 2024; 13:101066. [PMID: 39247397 PMCID: PMC11378099 DOI: 10.1016/j.imr.2024.101066] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/09/2024] [Revised: 06/06/2024] [Accepted: 06/20/2024] [Indexed: 09/10/2024] Open
Abstract
Background Oryeongsan (Wulingsan, Goreisan) has long been used for the treatment of impaired body fluid metabolism. However, the action mechanisms have not been clearly defined. Recently, effects of Oryeongsan on the body fluid and Na+ metabolism and the action mechanisms have been shown more clearly. The present review focuses on the recent findings on the effects of Oryeongsan in the cardio-renal system in relation with body fluid metabolism and action mechanisms leading to a decrease in blood pressure in animal models of hypertension. Methods The new and recent findings were searched by using searching systems including PubMed-NCBI and Google-Scholar. Results Oryeongsan induced an increase in glomerular filtration rate, and natriuresis and diuresis with a decreased osmolality and resulted in a contraction of the body fluid and Na+ balance. These findings were associated with a suppression of abundance of Na+-H +-exchanger isoform 3 expression and V2 receptor/aquaporin2 water channel signaling pathway in the kidney. Further, treatment with Oryeongsan accentuated atrial natriuretic peptide secretion in the atria from spontaneously hypertensive rats in which the secretion was suppressed. In addition, Oryeongsan ameliorated impaired vasodilation in spontaneously hypertensive rats. Conclusion The effects of Oryeongsan in the kidney, atria, and vessel were accompanied by a suppression of AT1 receptor and concurrent accentuation of abundance of AT2/Mas receptors expression and modulation of the natriuretic peptide system in these organs from hypertensive rats. The review shows multiple sites of action of Oryeongsan and mechanisms involved in the regulation of volume and pressure homeostasis in the body.
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Affiliation(s)
- Ho Sub Lee
- Hanbang Cardio-Renal Syndrome Research Center, Wonkwang University, Iksan, Republic of Korea
- College of Korean Medicine and Professional Graduate School of Korean Medicine, Wonkwang University, Iksan, Republic of Korea
| | - Hye Yoom Kim
- Hanbang Cardio-Renal Syndrome Research Center, Wonkwang University, Iksan, Republic of Korea
- College of Korean Medicine and Professional Graduate School of Korean Medicine, Wonkwang University, Iksan, Republic of Korea
| | - You Mee Ahn
- Hanbang Cardio-Renal Syndrome Research Center, Wonkwang University, Iksan, Republic of Korea
- KM Science Research Division, Korea Institute of Oriental Medicine, Daejeon, Republic of Korea
| | - Kyung Woo Cho
- Hanbang Cardio-Renal Syndrome Research Center, Wonkwang University, Iksan, Republic of Korea
- College of Korean Medicine and Professional Graduate School of Korean Medicine, Wonkwang University, Iksan, Republic of Korea
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Li ZY, Liu Y, Han ZN, Li X, Wang YY, Cui X, Zhang Y. The WNT/Ca 2+ pathway promotes atrial natriuretic peptide secretion by activating protein kinase C/transforming growth factor-β activated kinase 1/activating transcription factor 2 signaling in isolated beating rat atria. THE KOREAN JOURNAL OF PHYSIOLOGY & PHARMACOLOGY : OFFICIAL JOURNAL OF THE KOREAN PHYSIOLOGICAL SOCIETY AND THE KOREAN SOCIETY OF PHARMACOLOGY 2022; 26:469-478. [PMID: 36302622 PMCID: PMC9614394 DOI: 10.4196/kjpp.2022.26.6.469] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/18/2022] [Revised: 07/16/2022] [Accepted: 08/01/2022] [Indexed: 01/24/2023]
Abstract
WNT signaling plays an important role in cardiac development, but abnormal activity is often associated with cardiac hypertrophy, myocardial infarction, remodeling, and heart failure. The effect of WNT signaling on regulation of atrial natriuretic peptide (ANP) secretion is unclear. Therefore, the purpose of this study was to investigate the effect of Wnt agonist 1 (Wnta1) on ANP secretion and mechanical dynamics in beating rat atria. Wnta1 treatment significantly increased atrial ANP secretion and pulse pressure; these effects were blocked by U73122, an antagonist of phospholipase C. U73122 also abolished the effects of Wnta1-mediated upregulation of protein kinase C (PKC) β and γ expression, and the PKC antagonist Go 6983 eliminated Wnta1-induced secretion of ANP. In addition, Wnta1 upregulated levels of phospho-transforming growth factor-β activated kinase 1 (p-TAK1), TAK1 banding 1 (TAB1) and phospho-activating transcription factor 2 (p-ATF2); these effects were blocked by both U73122 and Go 6983. Wnta1-induced ATF2 was abrogated by inhibition of TAK1. Furthermore, Wnta1 upregulated the expression of T cell factor (TCF) 3, TCF4, and lymphoid enhancer factor 1 (LEF1), and these effects were blocked by U73122 and Go 6983. Tak1 inhibition abolished the Wnta1-induced expression of TCF3, TCF4, and LEF1 and Wnta1-mediated ANP secretion and changes in mechanical dynamics. These results suggest that Wnta1 increased the secretion of ANP and mechanical dynamics in beating rat atria by activation of PKC-TAK1-ATF2-TCF3/LEF1 and TCF4/LEF1 signaling mainly via the WNT/Ca2+ pathway. It is also suggested that WNT-ANP signaling is implicated in cardiac physiology and pathophysiology.
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Affiliation(s)
- Zhi-yu Li
- Department of Physiology, School of Medicine, Yanbian University, Yanji 133-002, China,Institue of Clinical Medicine, Yanbian University, Yanji 133-002, China
| | - Ying Liu
- Department of Physiology, School of Medicine, Yanbian University, Yanji 133-002, China
| | - Zhuo-na Han
- Department of Physiology, School of Medicine, Yanbian University, Yanji 133-002, China
| | - Xiang Li
- Department of Physiology, School of Medicine, Yanbian University, Yanji 133-002, China
| | - Yue-ying Wang
- Department of Physiology, School of Medicine, Yanbian University, Yanji 133-002, China
| | - Xun Cui
- Department of Physiology, School of Medicine, Yanbian University, Yanji 133-002, China,Cellular Function Research Center, Yanbian University, Yanji 133-002, China,Correspondence Xun Cui, E-mail:
| | - Ying Zhang
- Institue of Clinical Medicine, Yanbian University, Yanji 133-002, China,Correspondence Xun Cui, E-mail:
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Kim HY, Ahn YM, Na SW, Jang YJ, Kang DG, Lee HS, Cho KW. Oryeongsan (Wulingsan) ameliorates impaired ANP secretion of atria from spontaneously hypertensive rats. Biomed Pharmacother 2022; 146:112433. [PMID: 35062052 DOI: 10.1016/j.biopha.2021.112433] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2021] [Revised: 11/02/2021] [Accepted: 11/12/2021] [Indexed: 11/30/2022] Open
Abstract
Oryeongsan (ORS), a herbal medicine formula, has long been used for the treatment of impaired body water balance in Asian countries. Recently, it was shown that ORS administration modulates the renin-angiotensin system (RAS). Purpose of the present study was to determine characteristics of atrial ANP secretion and effects of ORS on the secretion in the atria from spontaneously hypertensive rats (SHR). Normotensive WKY groups (WKY-V, WKY-ORS, WKY-LOS) and hypertensive SHR groups (SHR-V, SHR-ORS, SHR-LOS) treated with vehicle, ORS, and losartan as a positive control group, respectively, were used. Experiments were performed in perfused beating atria (1.3 Hz) allowing atrial distension, acetylcholine (ACh) stimulation, and serial collection of atrial perfusates. The secreted ANP concentration was measured using radioimmunoassay. Interstitial fluid (ISF) translocation was measured using [3H]inulin clearance. Stepwise increase in atrial distension by 1.1, 2.0, and 2.7 cmH2O above basal distension further increased ANP secretion proportionally in the atria from WKY-V, but the response was significantly suppressed in the atria from SHR-V. Cardiomyocyte ANP release, the first step of atrial ANP secretion, was suppressed in the atria from SHR-V compared to those from WKY-V (-8.02 ± 2.86, -15.86 ± 2.27, and -20.09 ± 3.62%; n = 8, for SHR-V vs. 8.59 ± 2.81, 15.65 ± 7.14, and 38.12 ± 8.28%; n = 8, for WKY-V; p < 0.001 for all stepwise distension, respectively). Chronic treatment with ORS reversed the suppressed ANP release in atria from SHR-ORS group (6.76 ± 3.92, 9.12 ± 2.85, and 28.79 ± 1.79% for SHR-ORS; n = 5 vs. SHR-V; n = 8; p = 0.01, p < 0.001, p < 0.001, respectively). The effects of ORS were comparable to those of losartan. Trans-endocardial translocation of ISF, the second step of atrial ANP secretion was similar in the atria from the hypertensive SHR-V and normotensive WKY-V. ACh-induced ANP secretion and cardiomyocyte ANP release were also suppressed in the atria from SHR-V compared to WKY-V and ORS reversed the suppression. These findings were accompanied with accentuation of the AT1 receptor expression and suppression of the AT2/Mas receptor, M2 mACh receptor and GIRK4, a molecular component of KACh channel, expression in the atria from SHR-V. Further, treatment with ORS or losartan reversed the expressions in the groups of SHR-ORS and SHR-LOS. These results show that ANP secretion is suppressed in the atria from SHR in association with accentuation of AT1 receptor and suppression of AT2/Mas receptor and KACh channel expression. Treatment with ORS ameliorates impaired ANP secretion through improving cardiomyocyte ANP release with modulation of the cardiac RAS and muscarinic signaling. These findings provide experimental evidence which supports the effect of ORS on the regulation of atrial ANP secretion in the atria from SHR.
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Affiliation(s)
- Hye Yoom Kim
- Hanbang Cardio-Renal Syndrome Research Center, Wonkwang University, 460, Iksan-daero, Iksan, Jeonbuk, Republic of Korea; College of Korean Medicine and Professional Graduate School of Korean Medicine, Wonkwang University, 460, Iksan-daero, Iksan, Jeonbuk, Republic of Korea.
| | - You Mee Ahn
- Clinical Medicine Division, Korea Institute of Oriental Medicine, 1672, Yuseong-daero, Daejeon, Republic of Korea.
| | - Se Won Na
- Hanbang Cardio-Renal Syndrome Research Center, Wonkwang University, 460, Iksan-daero, Iksan, Jeonbuk, Republic of Korea; College of Korean Medicine and Professional Graduate School of Korean Medicine, Wonkwang University, 460, Iksan-daero, Iksan, Jeonbuk, Republic of Korea.
| | - Youn Jae Jang
- Hanbang Cardio-Renal Syndrome Research Center, Wonkwang University, 460, Iksan-daero, Iksan, Jeonbuk, Republic of Korea; College of Korean Medicine and Professional Graduate School of Korean Medicine, Wonkwang University, 460, Iksan-daero, Iksan, Jeonbuk, Republic of Korea.
| | - Dae Gill Kang
- Hanbang Cardio-Renal Syndrome Research Center, Wonkwang University, 460, Iksan-daero, Iksan, Jeonbuk, Republic of Korea; College of Korean Medicine and Professional Graduate School of Korean Medicine, Wonkwang University, 460, Iksan-daero, Iksan, Jeonbuk, Republic of Korea.
| | - Ho Sub Lee
- Hanbang Cardio-Renal Syndrome Research Center, Wonkwang University, 460, Iksan-daero, Iksan, Jeonbuk, Republic of Korea; College of Korean Medicine and Professional Graduate School of Korean Medicine, Wonkwang University, 460, Iksan-daero, Iksan, Jeonbuk, Republic of Korea.
| | - Kyung Woo Cho
- Hanbang Cardio-Renal Syndrome Research Center, Wonkwang University, 460, Iksan-daero, Iksan, Jeonbuk, Republic of Korea; College of Korean Medicine and Professional Graduate School of Korean Medicine, Wonkwang University, 460, Iksan-daero, Iksan, Jeonbuk, Republic of Korea.
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Li ZY, Liu Y, Wang YY, Li X, Han ZN, Hong L, Li YS, Cui X. NOX4 stimulates ANF secretion via activation of the Sirt1/Nrf2/ATF3/4 axis in hypoxic beating rat atria. Mol Med Rep 2022; 25:84. [PMID: 35029280 PMCID: PMC8809118 DOI: 10.3892/mmr.2022.12600] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/20/2021] [Accepted: 12/03/2021] [Indexed: 11/21/2022] Open
Abstract
Silent information regulator factor 2-related enzyme 1 (Sirt1) is involved in the regulation of cell senescence, gene transcription, energy balance and oxidative stress. However, the effect of Sirt1 on atrial natriuretic factor (ANF) secretion, especially under hypoxic conditions is unclear. The present study aimed to investigate the effect of Sirt1, regulated by NADPH oxidase 4 (NOX4), on ANF secretion in isolated beating rat atria during hypoxia. ANF secretion was analyzed using radioimmunoassays and protein expression levels were determined by western blotting and immunofluorescence staining. Intra-atrial pressure was recorded using a physiograph. Hypoxia significantly upregulated Sirt1 and nuclear factor erythroid-2-related factor 2 (Nrf2) protein expression levels, together with significantly increased ANF secretion. Hypoxia-induced protein expression of Sirt1 was significantly blocked by a NOX4 inhibitor, GLX351322, and Nrf2 protein expression levels were significantly abolished using the Sirt1 inhibitor, EX527. Hypoxia also significantly elevated the protein expression levels of phosphorylated-Akt and sequestosome 1 and significantly downregulated Kelch-like ECH-associated protein 1 protein expression levels. These effects were significantly blocked by EX527, preventing hypoxia-induced Nrf2 expression. An Nrf2 inhibitor, ML385, significantly abolished the hypoxia-induced upregulation of activating transcription factor (ATF)3, ATF4, T cell factor (TCF)3 and TCF4/lymphoid enhancer factor 1 (LEF1) protein expression levels, and significantly attenuated hypoxia-induced ANF secretion. These results indicated that Sirt1 and Nrf2, regulated by NOX4, can potentially stimulate TCF3 and TCF4/LEF1 signaling via ATF3 and ATF4 activation, thereby potentially participating in the regulation of ANF secretion in beating rat atria during hypoxia. In conclusion, intervening with the Sirt1/Nrf2/ATF signaling pathway may be an effective strategy for resisting oxidative stress damage in the heart during hypoxia.
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Affiliation(s)
- Zhi-Yu Li
- Department of Physiology, School of Medical Sciences, Yanbian University, Yanji, Jilin 133002, P.R. China
| | - Ying Liu
- Department of Physiology, School of Medical Sciences, Yanbian University, Yanji, Jilin 133002, P.R. China
| | - Yue-Ying Wang
- Department of Physiology, School of Medical Sciences, Yanbian University, Yanji, Jilin 133002, P.R. China
| | - Xiang Li
- Department of Physiology, School of Medical Sciences, Yanbian University, Yanji, Jilin 133002, P.R. China
| | - Zhuo-Na Han
- Department of Physiology, School of Medical Sciences, Yanbian University, Yanji, Jilin 133002, P.R. China
| | - Lan Hong
- Department of Physiology, School of Medical Sciences, Yanbian University, Yanji, Jilin 133002, P.R. China
| | - Ying-Shun Li
- Department of Physiology, School of Medical Sciences, Yanbian University, Yanji, Jilin 133002, P.R. China
| | - Xun Cui
- Department of Physiology, School of Medical Sciences, Yanbian University, Yanji, Jilin 133002, P.R. China
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Jankowski M, Broderick TL, Gutkowska J. The Role of Oxytocin in Cardiovascular Protection. Front Psychol 2020; 11:2139. [PMID: 32982875 PMCID: PMC7477297 DOI: 10.3389/fpsyg.2020.02139] [Citation(s) in RCA: 36] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2019] [Accepted: 07/30/2020] [Indexed: 12/13/2022] Open
Abstract
The beneficial effects of oxytocin on infarct size and functional recovery of the ischemic reperfused heart are well documented. The mechanisms for this cardioprotection are not well defined. Evidence indicates that oxytocin treatment improves cardiac work, reduces apoptosis and inflammation, and increases scar vascularization. Oxytocin-mediated cytoprotection involves the production of cGMP stimulated by local release of atrial natriuretic peptide and synthesis of nitric oxide. Treatment with oxytocin reduces the expression of proinflammatory cytokines and reduces immune cell infiltration. Oxytocin also stimulates differentiation stem cells to cardiomyocyte lineages as well as generation of endothelial and smooth muscle cells, promoting angiogenesis. The beneficial actions of oxytocin may include the increase in glucose uptake by cardiomyocytes, reduction in cardiomyocyte hypertrophy, decrease in oxidative stress, and mitochondrial protection of several cell types. In cardiac and cellular models of ischemia and reperfusion, acute administration of oxytocin at the onset of reperfusion enhances cardiomyocyte viability and function by activating Pi3K and Akt phosphorylation and downstream cellular signaling. Reperfusion injury salvage kinase and signal transducer and activator of transcription proteins cardioprotective pathways are involved. Oxytocin is cardioprotective by reducing the inflammatory response and improving cardiovascular and metabolic function. Because of its pleiotropic nature, this peptide demonstrates a clear potential for the treatment of cardiovascular pathologies. In this review, we discuss the possible cellular mechanisms of action of oxytocin involved in cardioprotection.
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Affiliation(s)
- Marek Jankowski
- Cardiovascular Biochemistry Laboratory, University of Montreal Hospital Centre, Montreal, QC, Canada.,Department of Medicine, University of Montreal, Montreal, QC, Canada
| | - Tom L Broderick
- Laboratory of Diabetes and Exercise Metabolism, Department of Physiology, College of Graduate Studies, Midwestern University, Glendale, AZ, United States
| | - Jolanta Gutkowska
- Cardiovascular Biochemistry Laboratory, University of Montreal Hospital Centre, Montreal, QC, Canada.,Department of Medicine, University of Montreal, Montreal, QC, Canada
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Lee HS, Cho KW, Kim HY, Ahn YM. Chamber-specific regulation of atrial natriuretic peptide secretion in cardiac hypertrophy: atrial wall dynamics in the ANP secretion. Pflugers Arch 2020; 472:639-651. [DOI: 10.1007/s00424-020-02377-2] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/16/2020] [Revised: 04/01/2020] [Accepted: 04/02/2020] [Indexed: 12/21/2022]
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Tan R, Ahn YM, Kim HY, Lee YJ, Cho KW, Kang DG, Lee HS. Atrial secretion of ANP is suppressed in renovascular hypertension: shifting of ANP secretion from atria to the left ventricle. Am J Physiol Heart Circ Physiol 2018; 315:H590-H601. [PMID: 29979625 DOI: 10.1152/ajpheart.00612.2017] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
In the present study, the change in secretion of atrial natriuretic peptide (ANP) from the atria was defined in hypertension accompanied by ventricular hypertrophy and increased synthesis of ANP. To identify the change of the secretion and mechanisms involved, experiments were performed in isolated perfused beating atria from sham-operated normotensive and renovascular hypertensive rats. Expression of ANP, natriuretic peptide receptor (NPR)-C, components of the renin-angiotensin system, and muscarinic signaling pathway was measured in cardiac tissues. Basal levels of ANP secretion and acetylcholine (ACh)- and stretch-induced activation of ANP secretion were suppressed in the atria from hypertensive compared with normotensive rats. ACh increased ANP secretion via M2 muscarinic ACh receptor-ACh-sensitive K+ channel signaling. In hypertensive rats, ANP concentration increased in the left ventricle but decreased in the right ventricle. The atrial concentration of ANP was not changed in hypertensive compared with normotensive rats. ANP mRNA expression was accentuated in the left ventricle but suppressed in the other cardiac chambers in the hearts of hypertensive rats. NPR-C expression was inversely related to ANP mRNA levels. Angiotensin II type 1 receptor (AT1R) expression was accentuated in the cardiac chambers from hypertensive rats compared with normotensive rats, whereas angiotensin II type 2 receptor, M2 muscarinic receptor, and Kir3.4 channels were suppressed. AT1R blockade with losartan reversed the change observed in hypertensive rats. The present findings indicate that renovascular hypertension shifts the major site of ANP secretion and synthesis from the atria to the left ventricle through modulation of the expression of ANP, NPR-C, AT1R, and the M2 muscarinic signaling pathway. NEW & NOTEWORTHY Renovascular hypertension suppresses the atrial secretion of ANP and shifts the major site of the regulation of ANP secretion and synthesis from atria to the hypertrophied left ventricle possibly via modulation of the expression of ANP, natriuretic peptide receptor-C, angiotensin II subtype 1 receptor, and M2 muscarinic signaling pathway.
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Affiliation(s)
- Rui Tan
- Hanbang Cardio-Renal Syndrome Research Center, Department of Herbal Resources, Professional Graduate School of Oriental Medicine Wonkwang University, Iksan, Korea
| | - You Mee Ahn
- Hanbang Cardio-Renal Syndrome Research Center, Department of Herbal Resources, Professional Graduate School of Oriental Medicine Wonkwang University, Iksan, Korea
| | - Hye Yoom Kim
- Hanbang Cardio-Renal Syndrome Research Center, Department of Herbal Resources, Professional Graduate School of Oriental Medicine Wonkwang University, Iksan, Korea
| | - Yun Jung Lee
- Hanbang Cardio-Renal Syndrome Research Center, Department of Herbal Resources, Professional Graduate School of Oriental Medicine Wonkwang University, Iksan, Korea
| | - Kyung Woo Cho
- Hanbang Cardio-Renal Syndrome Research Center, Department of Herbal Resources, Professional Graduate School of Oriental Medicine Wonkwang University, Iksan, Korea
| | - Dae Gill Kang
- Hanbang Cardio-Renal Syndrome Research Center, Department of Herbal Resources, Professional Graduate School of Oriental Medicine Wonkwang University, Iksan, Korea
| | - Ho Sub Lee
- Hanbang Cardio-Renal Syndrome Research Center, Department of Herbal Resources, Professional Graduate School of Oriental Medicine Wonkwang University, Iksan, Korea
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Ahn YM, Choi YH, Yoon JJ, Lee YJ, Cho KW, Kang DG, Lee HS. Oleanolic acid modulates the renin-angiotensin system and cardiac natriuretic hormone concomitantly with volume and pressure balance in rats. Eur J Pharmacol 2017; 809:231-241. [PMID: 28514645 DOI: 10.1016/j.ejphar.2017.05.030] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/22/2017] [Revised: 05/12/2017] [Accepted: 05/12/2017] [Indexed: 01/13/2023]
Abstract
Oleanolic acid is known to possess beneficial effects on the regulation of the cardiovascular homeostasis. However, the exact nature of the role of oleanolic acid on the regulation of body fluid balance and blood pressure homeostasis and its mechanisms involved are not well defined. Experiments were performed to identify the effects of oleanolic acid on the renin-angiotensin system and cardiac natriuretic hormone (ANP) system, and also renal function and blood pressure in normotensive and renovascular hypertensive rats. The change in the plasma levels of hormones and the expressions of renin, angiotensin II receptors, ANP, natriuretic peptide receptor-C, M2 muscarinic receptor and GIRK4 were determined in the kidney, heart and aorta. Oleanolic acid was administered orally for 1 or 3 weeks. Here, we found that oleanolic acid suppressed plasma levels of renin activity and aldosterone and intrarenal levels of renin and angiotensin II type 1 receptor expression and increased angiotensin II type 2 receptor in normotensive and hypertensive rats. Also, oleanolic acid increased plasma levels of ANP. Further, oleanolic acid suppressed angiotensin II type 1 receptor and natriuretic peptide receptor-C expression and increased angiotensin II type 2 receptor and ANP expression in the heart and aorta. Along with these changes, oleanolic acid accentuated urinary volume, electrolyte excretion and glomerular filtration rate in normotensive rats and suppressed arterial blood pressure in hypertensive rats. These findings suggest that beneficial effects of oleanolic acid on the cardiorenal system are closely associated with its roles on the renin-angiotensin system and cardiac natriuretic hormone system.
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Affiliation(s)
- You Mee Ahn
- Department of Herbal Resources, Hanbang Body Fluid Research Center, Professional Graduate School of Oriental Medicine, Wonkwang University, Republic of Korea
| | - Yoon Hee Choi
- Department of Herbal Resources, Hanbang Body Fluid Research Center, Professional Graduate School of Oriental Medicine, Wonkwang University, Republic of Korea
| | - Jung Joo Yoon
- Department of Herbal Resources, Hanbang Body Fluid Research Center, Professional Graduate School of Oriental Medicine, Wonkwang University, Republic of Korea
| | - Yun Jung Lee
- Department of Herbal Resources, Hanbang Body Fluid Research Center, Professional Graduate School of Oriental Medicine, Wonkwang University, Republic of Korea
| | - Kyung Woo Cho
- Department of Herbal Resources, Hanbang Body Fluid Research Center, Professional Graduate School of Oriental Medicine, Wonkwang University, Republic of Korea
| | - Dae Gill Kang
- Department of Herbal Resources, Hanbang Body Fluid Research Center, Professional Graduate School of Oriental Medicine, Wonkwang University, Republic of Korea.
| | - Ho Sub Lee
- Department of Herbal Resources, Hanbang Body Fluid Research Center, Professional Graduate School of Oriental Medicine, Wonkwang University, Republic of Korea.
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Sibjotang Increases Atrial Natriuretic Peptide Secretion in Beating Rabbit Atria. EVIDENCE-BASED COMPLEMENTARY AND ALTERNATIVE MEDICINE 2015; 2015:268643. [PMID: 26495007 PMCID: PMC4606132 DOI: 10.1155/2015/268643] [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: 06/19/2015] [Accepted: 09/13/2015] [Indexed: 11/18/2022]
Abstract
Sibjotang (Shizaotang), traditional herbal medicine formula, which was first documented in the Shanghanlun, has long been prescribed for the treatment of impairment of the body fluid homeostasis. The purpose of the present study was to identify the effects of Sibjotang on the secretion of a cardiac hormone, atrial natriuretic peptide (ANP), one of the main hormones involved in the regulation of the body fluid and blood pressure homeostasis. Water extract of Sibjotang increased ANP secretion concomitantly with an increase in atrial dynamics in a concentration-dependent manner. Sibjotang-induced increase in ANP secretion and positive inotropic effect were attenuated by GO6976 and LY333531, selective inhibitors of conventional protein kinase C, but not Rottlerin, an inhibitor of novel PKCδ. Similarly to the effect of Sibjotang, extracts of components of Sibjotang, Euphorbia kansui, and Daphne genkwa, but not Euphorbia pekinensis and Ziziphus jujuba, increased ANP secretion and atrial dynamics. Ingredients of Sibjotang, apigenin, rosmarinic acid, and salvianolic acid B decreased ANP secretion and atrial dynamics. These findings suggest that Sibjotang increases ANP secretion and atrial dynamics via activation of conventional protein kinase C signaling. This finding provides experimental evidence for the rationale in the use of Sibjotang in the treatment of impairment of the regulation of body fluid and blood pressure homeostasis.
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Emodin accentuates atrial natriuretic peptide secretion in cardiac atria. Eur J Pharmacol 2014; 735:44-51. [DOI: 10.1016/j.ejphar.2014.04.014] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2014] [Revised: 04/04/2014] [Accepted: 04/09/2014] [Indexed: 01/04/2023]
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