1
|
Lu Y, Min Q, Zhao X, Li L, Zhao G, Dong J. Eupatilin attenuates doxorubicin-induced cardiotoxicity by activating the PI3K-AKT signaling pathway in mice. Mol Cell Biochem 2024; 479:869-880. [PMID: 37222879 DOI: 10.1007/s11010-023-04769-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2023] [Accepted: 05/13/2023] [Indexed: 05/25/2023]
Abstract
Eupatilin is a pharmacologically active flavonoid with a variety of biological activities, such as anticancer, anti-inflammatory, antioxidant, neuroprotective, anti-allergic and cardioprotective effects. However, whether eupatilin has protective effects on doxorubicin-induced cardiotoxicity remains unknown. Thus, this study aimed to investigate the role of eupatilin in doxorubicin-induced cardiotoxicity. Mice were exposed to a single dose of doxorubicin (15 mg/kg) to generate doxorubicin-induced cardiotoxicity or normal saline as a control. To explore the protective effects, mice were intraperitoneally injected with eupatilin daily for 7 days. Then, we examined the changes in cardiac function, inflammation, apoptosis, and oxidative stress to evaluate the effects of eupatilin on doxorubicin-induced cardiotoxicity. Additionally, RNA-seq analysis was introduced to explore the potential molecular mechanisms. Eupatilin ameliorated doxorubicin-induced cardiotoxicity by attenuating inflammation, oxidative stress, and cardiomyocyte apoptosis and ameliorated doxorubicin-induced cardiac dysfunction. Mechanistically, eupatilin activated the PI3K-AKT signaling pathway, as evidenced by RNA-seq analysis and Western blot analysis. This study provides the first evidence that eupatilin ameliorates doxorubicin-induced cardiotoxicity by attenuating inflammation, oxidative stress, and apoptosis. Pharmacotherapy with eupatilin provides a novel therapeutic regimen for doxorubicin-induced cardiotoxicity.
Collapse
Affiliation(s)
- Yanyu Lu
- Department of Cardiology, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, Henan, 450052, China
| | - Qianqian Min
- Department of medicine, JingGangshan University, Ji'an, Jiangxi province, China
| | - Xiaoyan Zhao
- Department of Cardiology, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, Henan, 450052, China
| | - Li Li
- Department of Cardiology, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, Henan, 450052, China
| | - Guojun Zhao
- Department of Cardiology, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, Henan, 450052, China.
| | - Jianzeng Dong
- Department of Cardiology, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, Henan, 450052, China.
| |
Collapse
|
2
|
Gupta K, Bagang N, Singh G, Laddi L. Rat Model of Isoproterenol-Induced Myocardial Injury. Methods Mol Biol 2024; 2803:123-136. [PMID: 38676889 DOI: 10.1007/978-1-0716-3846-0_9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/29/2024]
Abstract
Isoproterenol (ISO) administration produces significant biochemical and histological changes including oxidative stress, reactive oxygen species (ROS) overproduction, and inflammation that leads to aggravation of myocardial injury. Subcutaneous or intraperitoneal ISO injection into rats can replicate several features of human heart disease, making it a useful tool for comprehending the underlying mechanisms and evaluating potential therapeutic strategies. In the present chapter, we elaborate on how depending on the precise experimental goals and the intended level of severity, different dosages and regimens are employed to induce myocardial injury.
Collapse
Affiliation(s)
- Kirti Gupta
- International Graduate Program of Medicines, College of Medicine, Taipei Medical University, Taipei, Taiwan
| | - Newly Bagang
- Department of Pharmacology, Kasturba Medical College, Manipal Academy of Higher Education, Manipal, Karnataka, India
| | - Gaaminepreet Singh
- Department of Physiology and Biophysics, School of Medicine, Case Western Reserve University, Cleveland, OH, USA.
| | - Loveinder Laddi
- Department of Pharmacology, Indo-Soviet Friendship College of Pharmacy, Moga, Punjab, India
| |
Collapse
|
3
|
Guo LY, Shi FL, Li M, Sun JH, Li CG, Liu ZX. Astragalus protects PC12 cells from 6-hydroxydopamine-induced neuronal damage: A serum pharmacological study. CHINESE J PHYSIOL 2021; 64:24-31. [PMID: 33642341 DOI: 10.4103/cjp.cjp_50_20] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022] Open
Abstract
Accumulating evidence has already indicated that traditional Chinese medicine (TCM) possesses tremendous potential for treating neurodegenerative diseases. Astragalus, also named Huangqi, is a famous traditional medical herb that can be applied to treat cerebral ischemia and prevent neuronal degeneration. Nevertheless, the underlying mechanisms remain largely unexplored. In the present study, Astragalus-containing serum (ASMES) was prepared and added into the culture medium of PC12 cells to explore its neuroprotective effect on 6-hydroxydopamine (6-OHDA)-caused neuronal toxicity. Our data showed that ASMES significantly ameliorated the cellular viability of cultured PC12 cells against the neurotoxicity induced by 6-OHDA (P < 0.05). Moreover, ASMES significantly decreased the cell apoptosis triggered by 6-OHDA (P < 0.01). Furthermore, 2',7'-dichlorofluorescin diacetate assay was performed to detect the changes in oxidative stress, and we showed that 6-OHDA elevated the production of reactive oxygen species (ROS), whereas ASMES significantly reversed these changes (P < 0.01). Besides, mitochondrial membrane potential (MMP) assay showed that ASMES could restore 6-OHDA-damaged MMP in cultured PC12 cells (P < 0.05). In conclusion, Astragalus could protect PC12 cells from 6-OHDA-caused neuronal toxicity, and possibly, the ROS-mediated apoptotic pathway participated in this process. Collectively, our findings provided valuable insights into the potential in treatment of neurodegenerative diseases.
Collapse
Affiliation(s)
- Li-Ying Guo
- Department of Anatomy and Neurobiology, Shandong University School of Basic Medicine, Shandong, China
| | - Feng-Lei Shi
- Department of Orthopaedics, Cheelee College of Medicine, Qilu Hospital (Qingdao), Shandong University, Shandong, China
| | - Meng Li
- Department of Anatomy and Neurobiology, Shandong University School of Basic Medicine, Shandong, China
| | - Jin-Hao Sun
- Department of Anatomy and Neurobiology, Shandong University School of Basic Medicine, Shandong, China
| | - Chuan-Gang Li
- Department of Anesthesiology, Second Hospital of Shandong University, Shandong, China
| | - Zeng-Xun Liu
- Department of Psychiatry, Shandong Mental Health Center, Shandong, China
| |
Collapse
|
4
|
Su HF, Shaker S, Kuang Y, Zhang M, Ye M, Qiao X. Phytochemistry and cardiovascular protective effects of Huang-Qi (Astragali Radix). Med Res Rev 2021; 41:1999-2038. [PMID: 33464616 DOI: 10.1002/med.21785] [Citation(s) in RCA: 78] [Impact Index Per Article: 26.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/09/2020] [Revised: 11/27/2020] [Accepted: 01/05/2021] [Indexed: 12/11/2022]
Abstract
Huang-Qi (Astragali Radix) is an herbal tonic widely used in China and many other countries. It is derived from the roots of Astragalus membranaceus and A. membranaceus var. mongholicus and shows potent cardiovascular protective effects. In this article, we comprehensively reviewed 189 small molecules isolated from the two Astragalus species and discussed the interspecies chemical differences. Moreover, we summarized the pharmacological activities and mechanisms of action of Huang-Qi and its major bioactive compounds for the treatment of cardiovascular diseases. This review covers 171 references published between February 1983 and March 2020.
Collapse
Affiliation(s)
- Hui-Fei Su
- State Key Laboratory of Natural and Biomimetic Drugs, School of Pharmaceutical Sciences, Peking University, Beijing, China
| | - Sharpkate Shaker
- State Key Laboratory of Natural and Biomimetic Drugs, School of Pharmaceutical Sciences, Peking University, Beijing, China
| | - Yi Kuang
- State Key Laboratory of Natural and Biomimetic Drugs, School of Pharmaceutical Sciences, Peking University, Beijing, China
| | - Meng Zhang
- State Key Laboratory of Natural and Biomimetic Drugs, School of Pharmaceutical Sciences, Peking University, Beijing, China
| | - Min Ye
- State Key Laboratory of Natural and Biomimetic Drugs, School of Pharmaceutical Sciences, Peking University, Beijing, China.,Key Laboratory of Molecular Cardiovascular Sciences of Ministry of Education, Peking University, Beijing, China
| | - Xue Qiao
- State Key Laboratory of Natural and Biomimetic Drugs, School of Pharmaceutical Sciences, Peking University, Beijing, China
| |
Collapse
|
5
|
RETRACTED: Astragalus polysaccharide promotes proliferation and osteogenic differentiation of bone mesenchymal stem cells by down-regulation of microRNA-152. Biomed Pharmacother 2019; 115:108927. [DOI: 10.1016/j.biopha.2019.108927] [Citation(s) in RCA: 20] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2019] [Revised: 04/25/2019] [Accepted: 04/25/2019] [Indexed: 01/08/2023] Open
|
6
|
Rao T, Gong YF, Peng JB, Wang YC, He K, Zhou HH, Tan ZR, Lv LZ. Comparative pharmacokinetic study on three formulations of Astragali Radix by an LC-MS/MS method for determination of formononetin in human plasma. Biomed Chromatogr 2019; 33:e4563. [PMID: 31025385 DOI: 10.1002/bmc.4563] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/06/2019] [Revised: 04/01/2019] [Accepted: 04/17/2019] [Indexed: 12/11/2022]
Abstract
Astragali Radix (AR) is a widely used traditional Chinese medicine for healing the cardiovascular, liver and immune systems. Recently, superfine pulverizing technology has been applied to developing novel formulations to improve bioavailability of the active constituents in herbs, such as ultrafine granular powder of AR. In this study, a universal and sensitive quantitative method based on LC-MS/MS was employed for determining formononetin, the main flavonoid in AR, in human plasma for comparative pharmacokinetics of three oral formulations of AR. Formononetin and IS (quercetin) were extracted by ethyl acetate from human plasma and were separated on a C18 column with a mobile phase consisting of acetonitrile and 0.1% formic acid. Positive-ion electrospray-ionization mode was applied in mass spectrometric detection. The quantitative method was validated with regards to selectivity, linearity, accuracy and precision, matrix effect, extraction recovery and stability, and was applied to comparing the pharmacokinetics of ultrafine granular powder (UGP), ultrafine powder (UP) and traditional decoction pieces (TDP) of AR after oral administration. The peak concentration and areas under the concentration-time curve of formononetin in UGP and UP were significantly higher than those of TDP. UGP and UP could significantly improve the bioavailability of AR in human compared with TDP after oral administration.
Collapse
Affiliation(s)
- Tai Rao
- Department of Clinical Pharmacology, Xiangya Hospital, Central South University, Changsha, China
- Hunan Key Laboratory of Pharmacogenetics, Institute of Clinical Pharmacology, Central South University, Changsha, China
- Engineering Research Center of Applied Technology of Pharmacogenomics, Ministry of Education, Changsha, China
- National Clinical Research Center for Geriatric Disorders, Changsha, China
| | - Yu-Feng Gong
- Department of Clinical Pharmacology, Xiangya Hospital, Central South University, Changsha, China
- Hunan Key Laboratory of Pharmacogenetics, Institute of Clinical Pharmacology, Central South University, Changsha, China
- Engineering Research Center of Applied Technology of Pharmacogenomics, Ministry of Education, Changsha, China
- National Clinical Research Center for Geriatric Disorders, Changsha, China
| | - Jing-Bo Peng
- Department of Clinical Pharmacology, Xiangya Hospital, Central South University, Changsha, China
- Hunan Key Laboratory of Pharmacogenetics, Institute of Clinical Pharmacology, Central South University, Changsha, China
- Engineering Research Center of Applied Technology of Pharmacogenomics, Ministry of Education, Changsha, China
- National Clinical Research Center for Geriatric Disorders, Changsha, China
| | - Yi-Cheng Wang
- Department of Clinical Pharmacology, Xiangya Hospital, Central South University, Changsha, China
- Hunan Key Laboratory of Pharmacogenetics, Institute of Clinical Pharmacology, Central South University, Changsha, China
- Engineering Research Center of Applied Technology of Pharmacogenomics, Ministry of Education, Changsha, China
- National Clinical Research Center for Geriatric Disorders, Changsha, China
| | - Kang He
- Department of Clinical Pharmacology, Xiangya Hospital, Central South University, Changsha, China
- Hunan Key Laboratory of Pharmacogenetics, Institute of Clinical Pharmacology, Central South University, Changsha, China
- Engineering Research Center of Applied Technology of Pharmacogenomics, Ministry of Education, Changsha, China
- National Clinical Research Center for Geriatric Disorders, Changsha, China
| | - Hong-Hao Zhou
- Department of Clinical Pharmacology, Xiangya Hospital, Central South University, Changsha, China
- Hunan Key Laboratory of Pharmacogenetics, Institute of Clinical Pharmacology, Central South University, Changsha, China
- Engineering Research Center of Applied Technology of Pharmacogenomics, Ministry of Education, Changsha, China
- National Clinical Research Center for Geriatric Disorders, Changsha, China
| | - Zhi-Rong Tan
- Department of Clinical Pharmacology, Xiangya Hospital, Central South University, Changsha, China
- Hunan Key Laboratory of Pharmacogenetics, Institute of Clinical Pharmacology, Central South University, Changsha, China
- Engineering Research Center of Applied Technology of Pharmacogenomics, Ministry of Education, Changsha, China
- National Clinical Research Center for Geriatric Disorders, Changsha, China
| | - Li-Zhi Lv
- Department of Cardiothoracic Surgery, Xiangya Hospital, Central South University, Changsha, Hunan, China
| |
Collapse
|
7
|
Shen X, Sun H, Cui H, Jin Y, Jin W, Cui X, Guo J. Astragaloside attenuates lipopolysaccharide‐induced cell apoptosis in human gingiva cells via MAPK signaling pathway. J Cell Biochem 2019; 120:12273-12279. [PMID: 31001851 DOI: 10.1002/jcb.28286] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/22/2018] [Accepted: 11/19/2018] [Indexed: 01/09/2023]
Affiliation(s)
- Xionghu Shen
- Department of Oncology Affiliated Hospital of Yanbian University Yanji People's Pepublic of China
| | - Honghua Sun
- Department of Oncology Affiliated Hospital of Yanbian University Yanji People's Pepublic of China
| | - Hai Cui
- Department of Oncology Affiliated Hospital of Yanbian University Yanji People's Pepublic of China
| | - Yongmin Jin
- Department of Oncology Affiliated Hospital of Yanbian University Yanji People's Pepublic of China
| | - Wenbo Jin
- Department of Oncology Affiliated Hospital of Yanbian University Yanji People's Pepublic of China
| | - Xian Cui
- Department of Oncology Affiliated Hospital of Yanbian University Yanji People's Pepublic of China
| | - Jie Guo
- Department of Radiotherapy The Second Hospital of Jilin University Changchun China
| |
Collapse
|
8
|
Nguyen LTH, Nguyen UT, Kim YH, Shin HM, Yang IJ. Astragali Radix and its compound formononetin ameliorate diesel particulate matter-induced skin barrier disruption by regulation of keratinocyte proliferation and apoptosis. JOURNAL OF ETHNOPHARMACOLOGY 2019; 228:132-141. [PMID: 30243826 DOI: 10.1016/j.jep.2018.09.025] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/02/2018] [Revised: 09/10/2018] [Accepted: 09/18/2018] [Indexed: 06/08/2023]
Abstract
ETHNOPHARMACOLOGICAL RELEVANCE Astragali Radix (AR), the root of Astragalus mongholicus Bunge, is widely applied in traditional medicine to promote skin health and tissue regeneration. AIM OF THE STUDY This study investigated the effects of AR and its active compound, formononetin (FMT), on skin barrier defects in keratinocytes exposed to diesel particulate matter (PM). MATERIALS AND METHODS HaCaT cells and three-dimensional (3D) human skin reconstructed model were pre-treated with AR (50, 100 μg/ml) and FMT (30, 50 μM), then treated with PM (200 μg/ml). RESULTS AR and FMT significantly enhanced the expression of Keratin (KRT) 16 in PM stimulated HaCaT cells. PM increased p53 and Bax expression as well as the subsequent cleavage of caspase 3 and PARP in HaCaT cells, while this was inhibited by AR and FMT treatment. In vitro studies using the PM stimulated 3D human skin reconstructed model revealed that AR and FMT increased the expression of KRT 16 and KRT 17. Histological examination of the 3D human skin reconstructed model showed that AR and FMT up-regulated the expression of Ki67, but down-regulated the expression of cleaved caspase 3. Both AR and FMT significantly inhibited phosphorylation of ERK, but not JNK and p38 MAPK in PM stimulated HaCaT cells. CONCLUSIONS These results suggest that AR and FMT act as anti-pollution agents and alleviate PM induced skin barrier defects through regulation of apoptosis and proliferation in keratinocytes.
Collapse
Affiliation(s)
- Ly Thi Huong Nguyen
- Department of Physiology, College of Korean Medicine, Dongguk University, Gyeongju 38066, Republic of Korea
| | - Uy Thai Nguyen
- Department of Physiology, College of Korean Medicine, Dongguk University, Gyeongju 38066, Republic of Korea
| | - Yeoun-Hee Kim
- Institute of Biomedical Engineering Research, Medical School, Kyungpook National University, 80 Daehakro, Bukgu, Daegu 702-701, Republic of Korea
| | - Heung-Mook Shin
- Department of Physiology, College of Korean Medicine, Dongguk University, Gyeongju 38066, Republic of Korea.
| | - In-Jun Yang
- Department of Physiology, College of Korean Medicine, Dongguk University, Gyeongju 38066, Republic of Korea.
| |
Collapse
|
9
|
Huang J, Chen H, Li C, Liu W, Ma W, Rui W. Screening and Identification of the Metabolites of Water Extracts of Raw and Honey-Processed Astragalus in Rat Urine Based on UHPLC/ESI-Q-TOF-MS and Multivariate Statistical Analysis. JOURNAL OF THE AMERICAN SOCIETY FOR MASS SPECTROMETRY 2018; 29:1919-1935. [PMID: 29931491 DOI: 10.1007/s13361-018-2003-1] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/18/2018] [Revised: 05/14/2018] [Accepted: 05/31/2018] [Indexed: 06/08/2023]
Abstract
Radix Astragali is a famous traditional Chinese medicine and honey-processed Astragalus is a product of Radix Astragali acquired by honey-processing. These two products are widely utilized to treat various diseases. In this study, we screened bioactive components and metabolites of raw and honey-processed Astragalus in rat urine by ultra-performance liquid chromatography equipped with electrospray ionization/quadrupole time-of-flight mass spectrometry (UHPLC/ESI-Q-TOF-MS) combined with multivariate statistical analysis. In total, 62 compounds, including 7 parent compounds and 55 metabolites, were detected and 11 metabolites were characterized for the first time. The identified metabolites indicated that the metabolic reactions of Astragalus in rats included hydroxylation, glucuronidation, deglucosidation, monomethylation, demethylation, sulfation, hydrogenation, and dehydroxylation. The metabolic pathways of raw and honey-processed Astragalus in rat urine also were clarified. Through multivariate statistical analysis of the data of the raw and honey-processed Astragalus groups, we found that 20 compounds were differential components and that 1 metabolite only existed in the honey-processed Astragalus group. The differences in these ingredients between these two groups might provide the basis for interpreting the biologic activity differences in traditional Chinese medicine treatments. Graphical Abstract.
Collapse
Affiliation(s)
- Jing Huang
- Central Laboratory, Guangdong Pharmaceutical University, 510006, Guangzhou, Guangdong, People's Republic of China
| | - Hongyuan Chen
- Department of Immunology & Pathogen Biology, School of Basic Course, Guangdong Pharmaceutical University, 510006, Guangzhou, People's Republic of China
- Key Laboratory of Digital Quality Evaluation of Chinese Materia Medica of State Administration of TCM, 510006, Guangzhou, Guangdong, People's Republic of China
- Guangdong Engineering & Technology Research Center of Topical Precise Drug Delivery System, Guangdong Pharmaceutical University, 510006, Guangzhou, People's Republic of China
| | - Chanyi Li
- Central Laboratory, Guangdong Pharmaceutical University, 510006, Guangzhou, Guangdong, People's Republic of China
| | - Wuping Liu
- Central Laboratory, Guangdong Pharmaceutical University, 510006, Guangzhou, Guangdong, People's Republic of China
| | - Wenjie Ma
- Central Laboratory, Guangdong Pharmaceutical University, 510006, Guangzhou, Guangdong, People's Republic of China
| | - Wen Rui
- Central Laboratory, Guangdong Pharmaceutical University, 510006, Guangzhou, Guangdong, People's Republic of China.
- Key Laboratory of Digital Quality Evaluation of Chinese Materia Medica of State Administration of TCM, 510006, Guangzhou, Guangdong, People's Republic of China.
- Guangdong Engineering & Technology Research Center of Topical Precise Drug Delivery System, Guangdong Pharmaceutical University, 510006, Guangzhou, People's Republic of China.
| |
Collapse
|
10
|
Huang J, Yin L, Dong L, Quan H, Chen R, Hua S, Ma J, Guo D, Fu X. Quality evaluation for Radix Astragali based on fingerprint, indicative components selection and QAMS. Biomed Chromatogr 2018; 32:e4343. [PMID: 30003570 DOI: 10.1002/bmc.4343] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2017] [Revised: 06/22/2018] [Accepted: 07/04/2018] [Indexed: 12/19/2022]
Abstract
Radix Astragali (RA) is one of the most widely used Chinese herbs prescribed in many Chinese formulas to reinforce 'Qi' and treat vital energy deficiency. This study combined fingerprinting with quantitative analysis multi-components by a single marker (QAMS) to improve the quality control standard for RA on the basis of existing quality control methods of traditional Chinese medicinal materials. UPLC-ESI-TOF-MS technique was used to evaluate the quality of RA by fingerprinting and QAMS. Using the anti-inflammatory, anti-oxidation and anti-anoxic activities to screen characteristic components of RA, the calycosin-7-O-β-d-glucoside (CG), ononin, astragaloside IV, astragaloside II, calycosin and astrageloside I significantly inhibited ear edema in mice, the calycosin and CG had good antioxidant activity and the astragaloside I had a significant anti-hypoxia activity. Astragaloside I, astragaloside II, astragaloside IV, ononin, calycosin and CG had significant pharmacological actions. These components were comprehensively used as the indicative components for the quality control of RA. Astragaloside I was used as the internal standard of the relative correction factors of CG (13.45), ononin (0.51), calycosin (12.08), astragaloside IV (0.73) and astragaloside II (0.81). Astragaloside I and CG were used as internal standards of the relative correction factors of the flavonoids and saponins of ononin (1.11), calycosin (0.04), astragaloside IV (0.73) and astragaloside II (0.81). The study combined fingerprinting with QAMS to improve the quality control standard for RA.
Collapse
Affiliation(s)
- Jun Huang
- School of Pharmacy, Ningxia Medical University, Yinchuan, China
| | - Lei Yin
- Shizuishan Maternal and Child Health Care Family Planning Service Center, Shizuishan, China
| | - Lin Dong
- School of Pharmacy, Ningxia Medical University, Yinchuan, China
| | - Hongfeng Quan
- School of Pharmacy, Ningxia Medical University, Yinchuan, China
| | - Rong Chen
- School of Pharmacy, Ningxia Medical University, Yinchuan, China
| | - Shiyao Hua
- School of Pharmacy, Ningxia Medical University, Yinchuan, China
| | - Jiahua Ma
- School of Pharmacy, Ningxia Medical University, Yinchuan, China
| | - Dongyan Guo
- School of Pharmacy, Ningxia Medical University, Yinchuan, China
| | - Xueyan Fu
- School of Pharmacy, Ningxia Medical University, Yinchuan, China.,Ningxia Engineering and Technology Research Center for Modernization of Hui Medicine, Yinchuan, China.,Key Laboratory of Hui Ethnic Medicine Modernization, Ministry of Education (Ningxia Medical University), Yinchuan, China
| |
Collapse
|
11
|
Wong ZW, Thanikachalam PV, Ramamurthy S. Molecular understanding of the protective role of natural products on isoproterenol-induced myocardial infarction: A review. Biomed Pharmacother 2017; 94:1145-1166. [PMID: 28826162 DOI: 10.1016/j.biopha.2017.08.009] [Citation(s) in RCA: 65] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2017] [Revised: 07/09/2017] [Accepted: 08/02/2017] [Indexed: 01/08/2023] Open
Abstract
Modern medicine has been used to treat myocardial infarction, a subset of cardiovascular diseases, and have been relatively effective but not without adverse effects. Consequently, this issue has stimulated interest in the use of natural products, which may be equally effective and better tolerated. Many studies have investigated the cardioprotective effect of natural products, such as plant-derived phytochemicals, against isoproterenol (ISO)-induced myocardial damage; these have produced promising results on the basis of their antioxidant, anti-atherosclerotic, anti-apoptotic and anti-inflammatory activities. This review briefly introduces the pathophysiology of myocardial infarction (MI) and then addresses the progress of natural product research towards its treatment. We highlight the promising applications and mechanisms of action of plant extracts, phytochemicals and polyherbal formulations towards the treatment of ISO-induced myocardial damage. Most of the products displayed elevated antioxidant levels with decreased oxidative stress and lipid peroxidation, along with restoration of ionic balance and lowered expression of myocardial injury markers, pro-inflammatory cytokines, and apoptotic parameters. Likewise, lipid profiles were positively altered and histopathological improvements could be seen from, for example, the better membrane integrity, decreased necrosis, edema, infarct size, and leukocyte infiltration. This review highlights promising results towards the amelioration of ISO-induced myocardial damage, which suggest the direction for future research on natural products that could be used to treat MI.
Collapse
Affiliation(s)
- Zheng Wei Wong
- International Medical University, 126, Jln Jalil Perkasa 19, Bukit Jalil, 57000 Wilayah Persekutuan, Kuala Lumpur, Malaysia
| | | | - Srinivasan Ramamurthy
- International Medical University, 126, Jln Jalil Perkasa 19, Bukit Jalil, 57000 Wilayah Persekutuan, Kuala Lumpur, Malaysia.
| |
Collapse
|
12
|
Momordica charantia polysaccharides ameliorate oxidative stress, hyperlipidemia, inflammation, and apoptosis during myocardial infarction by inhibiting the NF-κB signaling pathway. Int J Biol Macromol 2017; 97:544-551. [PMID: 28109806 DOI: 10.1016/j.ijbiomac.2017.01.074] [Citation(s) in RCA: 70] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/10/2016] [Revised: 01/02/2017] [Accepted: 01/15/2017] [Indexed: 01/07/2023]
Abstract
The polysaccharide extract of Momordica charantia has various biological activities; however, its effect on endothelial dysfunction in myocardial infarction remains unclear. To elucidate this, myocardial infarction was induced in rats using isoproterenol (ISP). Pretreatment with M. charantia polysaccharides (MCP; 150 or 300mg/kg) for 25days significantly inhibited increases in heart weight, the heart-weight-to-body-weight ratio, and infarction size, and ameliorated the increased serum levels of aspartate transaminase, creatine kinase, lactate dehydrogenase, total cholesterol, triglycerides, very-low-density lipoprotein cholesterol, low-density lipoprotein cholesterol, and high-density lipoprotein cholesterol. In addition, MCP enhanced the activity of superoxide dismutase, catalase, and non-protein sulfhydryls, and decreased the level of lipid peroxidation. Moreover, MCP pretreatment downregulated the expression of proinflammatory cytokines (tumor necrosis factor alpha, interleukin (IL)-6, and IL-10), inflammatory markers (nitric oxide, myeloperoxidase, and inducible nitric oxide synthase), and apoptotic markers (caspase-3 and BAX), and upregulated Bcl-2 expression. Pretreatment with MCP reduced myonecrosis, edema, and inflammatory cell infiltration, and restored cardiomyocytes architecture. This myocardial protective effect could be related to the enhancement of the antioxidant defense system through the nuclear factor kappa B (NF-kB) pathways, and to anti-apoptosis through regulation of Bax, caspase-3, and Bcl-2.
Collapse
|
13
|
Calycosin and Formononetin Induce Endothelium-Dependent Vasodilation by the Activation of Large-Conductance Ca 2+-Activated K + Channels (BK Ca). EVIDENCE-BASED COMPLEMENTARY AND ALTERNATIVE MEDICINE 2016; 2016:5272531. [PMID: 27994632 PMCID: PMC5141325 DOI: 10.1155/2016/5272531] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/05/2016] [Revised: 09/26/2016] [Accepted: 10/19/2016] [Indexed: 12/13/2022]
Abstract
Calycosin and formononetin are two structurally similar isoflavonoids that have been shown to induce vasodilation in aorta and conduit arteries, but study of their actions on endothelial functions is lacking. Here, we demonstrated that both isoflavonoids relaxed rat mesenteric resistance arteries in a concentration-dependent manner, which was reduced by endothelial disruption and nitric oxide synthase (NOS) inhibition, indicating the involvement of both endothelium and vascular smooth muscle. In addition, the endothelium-dependent vasodilation, but not the endothelium-independent vasodilation, was blocked by BKCa inhibitor iberiotoxin (IbTX). Using human umbilical vein endothelial cells (HUVECs) as a model, we showed calycosin and formononetin induced dose-dependent outwardly rectifying K+ currents using whole cell patch clamp. These currents were blocked by tetraethylammonium chloride (TEACl), charybdotoxin (ChTX), or IbTX, but not apamin. We further demonstrated that both isoflavonoids significantly increased nitric oxide (NO) production and upregulated the activities and expressions of endothelial NOS (eNOS) and neuronal NOS (nNOS). These results suggested that calycosin and formononetin act as endothelial BKCa activators for mediating endothelium-dependent vasodilation through enhancing endothelium hyperpolarization and NO production. Since activation of BKCa plays a role in improving behavioral and cognitive disorders, we suggested that these two isoflavonoids could provide beneficial effects to cognitive disorders through vascular regulation.
Collapse
|
14
|
Tsai MY, Hu WL, Lin CC, Lee YC, Chen SY, Hung YC, Chen YH. Prescription pattern of Chinese herbal products for heart failure in Taiwan: A population-based study. Int J Cardiol 2016; 228:90-96. [PMID: 27863367 DOI: 10.1016/j.ijcard.2016.11.172] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/03/2016] [Accepted: 11/06/2016] [Indexed: 12/28/2022]
Abstract
BACKGROUND Certain Chinese herbal products (CHPs) may protect against the progression of heart failure (HF). However, there is a lack of research regarding the use of CHPs in patients with HF. The aims of this study were to analyze CHPs usage patterns in patients with HF and to identify the frequency and combination of CHPs most commonly used for HF. METHODS This retrospective, nationwide, population-based cohort study was conducted using a randomly sampled cohort of one million patients selected from the National Health Insurance Research Database (NHIRD) for the years 2000-2010 in Taiwan. CHP use and the top ten most frequently prescribed formulae and single herbs for treating HF were assessed, including total formulae number and average and frequency of prescriptions. Demographic characteristics, including sex and age at diagnosis of HF, were examined, together with existing comorbidities. RESULTS The cohort included 19,988 newly diagnosed AD patients, who were given CHP treatment for HF between 2000 and 2010. Among them, female patients (53.3%) and those over 65years old (63.9%) were more likely to use CM. After adjusting for demographic factors, HF patients suffering from coronary artery disease (CAD) were more likely to seek traditional Chinese medicine (TCM) treatment than those with non-TCM users (57.6% vs. 52.6%). Zhi-Gan-Cao-Tang (4.07%) and Danshen (5.13%) were the most frequent formula CHP and single CHP prescribed by TCM practitioners for treating HF, respectively. CONCLUSION Most people with HF who consumed CHPs used CHPs to supplement Yang-Qi, nourish the Ying-blood, and strengthen the heart spirit as complementary medicines to relieve HF-related symptoms, in addition to using standard anti-HF treatments. Further large-scale, randomized clinical trials are warranted in order to determine the effectiveness and safety of these herbal medicines.
Collapse
Affiliation(s)
- Ming-Yen Tsai
- Graduate Institute of Integrated Medicine, College of Chinese Medicine, Research Center for Chinese Medicine & Acupuncture, China Medical University, Taichung, Taiwan; Department of Chinese Medicine, Kaohsiung Chang Gung Memorial Hospital, Chang Gung University College of Medicine, Kaohsiung, Taiwan
| | - Wen-Long Hu
- Department of Chinese Medicine, Kaohsiung Chang Gung Memorial Hospital, Chang Gung University College of Medicine, Kaohsiung, Taiwan
| | - Che-Chen Lin
- Management Office for Health Data, China Medical University Hospital, Taichung, Taiwan; Healthcare Service Research Center (HSRC), Taichung Veterans General Hospital, Taichung, Taiwan
| | - Yi-Chiao Lee
- Department of Chinese Medicine, Kaohsiung Chang Gung Memorial Hospital, Chang Gung University College of Medicine, Kaohsiung, Taiwan
| | - Shih-Yu Chen
- School of Chinese Medicine for Post Baccalaureate, I-Shou University, Kaohsiung, Taiwan
| | - Yu-Chiang Hung
- Department of Chinese Medicine, Kaohsiung Chang Gung Memorial Hospital, Chang Gung University College of Medicine, Kaohsiung, Taiwan; School of Chinese Medicine for Post Baccalaureate, I-Shou University, Kaohsiung, Taiwan.
| | - Yung-Hsiang Chen
- Graduate Institute of Integrated Medicine, College of Chinese Medicine, Research Center for Chinese Medicine & Acupuncture, China Medical University, Taichung, Taiwan; Department of Psychology, College of Medical and Health Science, Asia University, Taichung, Taiwan.
| |
Collapse
|
15
|
Shi J, Zheng L, Lin Z, Hou C, Liu W, Yan T, Zhu L, Wang Y, Lu L, Liu Z. Study of pharmacokinetic profiles and characteristics of active components and their metabolites in rat plasma following oral administration of the water extract of Astragali radix using UPLC-MS/MS. JOURNAL OF ETHNOPHARMACOLOGY 2015; 169:183-194. [PMID: 25917840 DOI: 10.1016/j.jep.2015.04.019] [Citation(s) in RCA: 64] [Impact Index Per Article: 7.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/09/2015] [Revised: 03/16/2015] [Accepted: 04/08/2015] [Indexed: 06/04/2023]
Abstract
ETHNOPHARMACOLOGICAL RELEVANCE Astragali radix is one of the well-known traditional Chinese herbal medicine, and possesses various biological functions, such as hepatoprotective and anticancer. In present study, to investigate the metabolism and pharmacokinetics of the major constituents of A. radix, a sensitive ultra-performance liquid chromatography-electrospray ionization-mass spectrometry (UPLC-MS/MS) method with shorter chromatographic running time was developed and validated for simultaneous quantification of formononetin, ononin, calycosin, calycosin-7-β-glucoside, astragaloside IV and their glucuronide metabolites in rat plasma after oral administration of water extract of A. radix at two different doses. MATERIALS AND METHODS The chromatographic separation was achieved on a C18 column with gradient elution by using a mixture of 0.1% formic acid aqueous solution and acetonitrile as the mobile phase at a flow rate of 0.3mL/min. A tandem mass spectrometric detection was conducted using multiple-reaction monitoring (MRM) via electrospray ionization (ESI) source in positive ionization mode. Samples were pre-treated by a single-step protein precipitation with methanol, and erlotinib was used as internal standard (IS). RESULTS The current UPLC-MS/MS assay was validated for linearity, intra-day and inter-day precisions, accuracy, extraction recovery, matrix effects and stability. The lowest limit of quantifications (LLOQ) were 1ng/mL for all analytes. After oral administration, the plasma concentrations of the glucuronides, especially calycosin-3'-glucuronide, were much higher than the parent compounds. The mean half-life (t1/2) was between 1 and 5h, and the metabolites were eliminated faster than the parent constituents. The median (range) time to reach maximum plasma concentration (Tmax) was between 0.5 and 1h. CONCLUSIONS This is the first study of the pharmacokinetic study of bioactive compounds and their glucuronides in male rat plasma after oral administration of water extract of A. radix. The results demonstrated the biotransformation between the bioactive isoflavonoids and their glucuronides was extensive in rats and provided a significant basis for better understanding the absorption and metabolism mechanism of A. radix. Furthermore, this study could suggest that future studies should focus on the metabolites and biotransformation between the bioactive constituents when conducting a drug efficacy study.
Collapse
Affiliation(s)
- Jian Shi
- Department of Pharmaceutics, School of Pharmaceutical Sciences, Southern Medical University, Guangzhou, Guangdong 510515, China; International Institute for Translational Chinese Medicine, Guangzhou University of Chinese Medicine, Guangzhou, Guangdong 510006, China
| | - Liang Zheng
- Department of Pharmaceutics, School of Pharmaceutical Sciences, Southern Medical University, Guangzhou, Guangdong 510515, China; International Institute for Translational Chinese Medicine, Guangzhou University of Chinese Medicine, Guangzhou, Guangdong 510006, China
| | - Zhufen Lin
- Department of Pharmaceutics, School of Pharmaceutical Sciences, Southern Medical University, Guangzhou, Guangdong 510515, China; International Institute for Translational Chinese Medicine, Guangzhou University of Chinese Medicine, Guangzhou, Guangdong 510006, China
| | - Chuqi Hou
- Department of Pharmaceutics, School of Pharmaceutical Sciences, Southern Medical University, Guangzhou, Guangdong 510515, China; International Institute for Translational Chinese Medicine, Guangzhou University of Chinese Medicine, Guangzhou, Guangdong 510006, China
| | - Wenqin Liu
- Department of Pharmaceutics, School of Pharmaceutical Sciences, Southern Medical University, Guangzhou, Guangdong 510515, China; International Institute for Translational Chinese Medicine, Guangzhou University of Chinese Medicine, Guangzhou, Guangdong 510006, China
| | - Tongmeng Yan
- Department of Pharmaceutics, School of Pharmaceutical Sciences, Southern Medical University, Guangzhou, Guangdong 510515, China; International Institute for Translational Chinese Medicine, Guangzhou University of Chinese Medicine, Guangzhou, Guangdong 510006, China
| | - Lijun Zhu
- International Institute for Translational Chinese Medicine, Guangzhou University of Chinese Medicine, Guangzhou, Guangdong 510006, China
| | - Ying Wang
- Department of Pharmaceutics, School of Pharmaceutical Sciences, Southern Medical University, Guangzhou, Guangdong 510515, China; International Institute for Translational Chinese Medicine, Guangzhou University of Chinese Medicine, Guangzhou, Guangdong 510006, China
| | - Linlin Lu
- International Institute for Translational Chinese Medicine, Guangzhou University of Chinese Medicine, Guangzhou, Guangdong 510006, China.
| | - Zhongqiu Liu
- Department of Pharmaceutics, School of Pharmaceutical Sciences, Southern Medical University, Guangzhou, Guangdong 510515, China; International Institute for Translational Chinese Medicine, Guangzhou University of Chinese Medicine, Guangzhou, Guangdong 510006, China.
| |
Collapse
|
16
|
Astragaloside IV inhibits NF- κ B activation and inflammatory gene expression in LPS-treated mice. Mediators Inflamm 2015; 2015:274314. [PMID: 25960613 PMCID: PMC4415625 DOI: 10.1155/2015/274314] [Citation(s) in RCA: 63] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2014] [Revised: 02/27/2015] [Accepted: 02/28/2015] [Indexed: 12/17/2022] Open
Abstract
In this study we investigated the role of astragaloside IV (AS-IV), one of the major active constituents purified from the Chinese medicinal herb Astragalus membranaceus, in LPS-induced acute inflammatory responses in mice in vivo and examined possible underlying mechanisms. Mice were assigned to four groups: vehicle-treated control animals; AS-IV-treated animals (10 mg/kg b.w. AS-IV daily i.p. injection for 6 days); LPS-treated animals; and AS-IV plus LPS-treated animals. We found that AS-IV treatment significantly inhibited LPS-induced increases in serum levels of MCP-1 and TNF by 82% and 49%, respectively. AS-IV also inhibited LPS-induced upregulation of inflammatory gene expression in different organs. Lung mRNA levels of cellular adhesion molecules, MCP-1, TNFα, IL-6, and TLR4 were significantly attenuated, and lung neutrophil infiltration and activation were strongly inhibited, as reflected by decreased myeloperoxidase content, when the mice were pretreated with AS-IV. Similar results were observed in heart, aorta, kidney, and liver. Furthermore, AS-IV significantly suppressed LPS-induced NF-κB and AP-1 DNA-binding activities in lung and heart. In conclusion, our data provide new in vivo evidence that AS-IV effectively inhibits LPS-induced acute inflammatory responses by modulating NF-κB and AP-1 signaling pathways. Our results suggest that AS-IV may be useful for the prevention or treatment of inflammatory diseases.
Collapse
|
17
|
Kim JH, Chung HS, Antonisamy P, Lee SR, Bae H. Cardioprotective effect of rhizomes of Acorus gramineus against isoproterenol-induced cardiac damage in pigs. Cardiovasc Toxicol 2015; 14:183-92. [PMID: 24420420 DOI: 10.1007/s12012-014-9243-5] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
Abstract
The present study was designed to evaluate the cardioprotective potential of water extract of rhizomes of Acorus gramineus (AGR) against isoproterenol (ISO)-induced myocardial infarction. Male pigs were orally administered with 250 or 500 mg/kg of AGR or with vehicle for 9 days, with concurrent subcutaneous injections of ISO on the 8th and 9th day. Administration of AGR significantly ameliorated ISO-induced cardiac dysfunctions as evidenced by the ventricular ST-segment interval and R-amplitude as well as the left ventricle fractional shortening and ejection fraction. Additionally, administration of AGR significantly attenuated increased cardiac injury markers, such as cardiac troponin T, tumor necrosis factor-α, and myeloperoxidase activity, and cardiac marker enzymes, and prevented the depletion of antioxidant parameters. Malondialdehyde formation was also inhibited by AGR. Based on the results, it is concluded that AGR possesses significant cardioprotective potential and may serve as an adjunct in the treatment and prophylaxis of myocardial infarction.
Collapse
Affiliation(s)
- Jong-Hoon Kim
- Department of Veterinary Physiology, Biosafety Research Institute, College of Veterinary Medicine, Chonbuk National University, 664-14, 1GA, Duckjin-Dong, Duckjin-Gu, Jeollabuk-Do, Chonju City, 561-756, Republic of Korea
| | | | | | | | | |
Collapse
|
18
|
Neuroprotective mechanism of BNG-1 against focal cerebral ischemia: a neuroimaging and neurotrophin study. PLoS One 2014; 9:e114909. [PMID: 25506838 PMCID: PMC4266630 DOI: 10.1371/journal.pone.0114909] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/25/2014] [Accepted: 11/15/2014] [Indexed: 12/26/2022] Open
Abstract
BNG-1 is a herb complex used in traditional Chinese medicine to treat stroke. In this study, we attempted to identify the neuroprotective mechanism of BNG-1 by using neuroimaging and neurotrophin analyses of a stroke animal model. Rats were treated with either saline or BNG-1 for 7 d after 60-min middle cerebral artery occlusion by filament model. The temporal change of magnetic resonance (MR) imaging of brain was studied using a 7 Tesla MR imaging (MRI) system and the temporal expressions of neurotrophin-3 (NT-3), brain-derived neurotrophic factor (BDNF), and nerve growth factor (NGF) in brain were analyzed before operation and at 4 h, 2 d, and 7 d after operation. Compared with the saline group, the BNG-1 group exhibited a smaller infarction volume in the cerebral cortex in T2 image from as early as 4 h to 7 d, less edema in the cortex in diffusion weighted image from 2 to 7 d, earlier reduction of postischemic hyperperfusion in both the cortex and striatum in perfusion image at 4 h, and earlier normalization of the ischemic pattern in the striatum in susceptibility weighted image at 2 d. NT-3 and BDNF levels were higher in the BNG-1 group than the saline group at 7 d. We concluded that the protective effect of BNG-1 against cerebral ischemic injury might act through improving cerebral hemodynamics and recovering neurotrophin generation.
Collapse
|
19
|
Wu HW, Fang J, Tang LY, Lu P, Xu HY, Zhao Y, Li DF, Zhang Y, Fu MH, Yang HJ. Quality Evaluation of Astragali Radix based on DPPH Radical Scavenging Activity and Chemical Analysis. CHINESE HERBAL MEDICINES 2014. [DOI: 10.1016/s1674-6384(14)60043-5] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023] Open
|
20
|
WANG XIAOHONG, HUANG WEIMIN. Astragalus polysaccharides exert protective effects in newborn rats with bronchopulmonary dysplasia by upregulating the expression of EGFL7 in lung tissue. Int J Mol Med 2014; 34:1529-36. [DOI: 10.3892/ijmm.2014.1951] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2014] [Accepted: 08/26/2014] [Indexed: 11/06/2022] Open
|
21
|
Gao LH, Liu Q, Liu SN, Chen ZY, Li CN, Lei L, Sun SJ, Li LY, Liu JL, Shen ZF. A refined-JinQi-JiangTang tablet ameliorates prediabetes by reducing insulin resistance and improving beta cell function in mice. JOURNAL OF ETHNOPHARMACOLOGY 2013; 151:675-685. [PMID: 24286962 DOI: 10.1016/j.jep.2013.11.024] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/19/2013] [Revised: 11/11/2013] [Accepted: 11/13/2013] [Indexed: 06/02/2023]
Abstract
ETHNOPHARMACOLOGICAL RELEVANCE Refined-JQ (JQ-R) is a mixture of refined extracts from three major herbal components of JinQi-JiangTang tablet: Coptis chinensis (Ranunculaceae), Astragalus membranaceus (Leguminosae), and Lonicera japonica (Caprifoliaceae). Our previous studies have indicated that JQ-R could decrease fasting blood glucose levels in diabetic mice and insulin resistance mice. Investigating the hypoglycemic effect of JQ-R on prediabetes has practical application value for preventing or delaying insulin resistance, impaired glucose tolerance and possibly the development of clinical diabetes. MATERIALS AND METHODS The anti-diabetic potential of JQ-R was investigated using a high fat-diet (HFD)-induced obesity mouse model. C57BL/6J mice (HFD-C57 mice) were fed with high-fat diet for 4 months. HFD-C57 mice were treated with either JQ-R (administered intragastrically once daily for 4 weeks) or metformin (as positive control), and the effects of JQ-R on body weight, blood lipids, glucose metabolism, insulin sensitivity, and beta cell function were monitored. RESULTS The body weight, serum cholesterol, and the Homeostasis Model Assessment ratio (insulin resistance index) were significantly reduced in JQ-R or metformin-treated mice, and the glucose tolerance was enhanced and insulin response was improved simultaneously. Moreover, both JQ-R and metformin could activate liver glycogen syntheses even under a relatively high glucose loading. Although glyconeogenesis was inhibited in the metformin treated mice, it was not observed in JQ-R treated mice. Similar to metformin, JQ-R could also improve the glucose infusion rate (GIR) in hyperglycemic clamp test. JQ-R was also shown to increase the levels of phosphorylated AMPKα and phosphorylated acetyl CoA carboxylase (ACC), similar to metformin. CONCLUSION JQ-R could reduce HFD-induced insulin resistance by regulating glucose and lipid metabolism, increasing insulin sensitivity through activating the AMPK signaling pathway, and subsequently improving β cell function. Therefore, JQ-R may offer an alternative in treating disorders associated with insulin resistance, such as prediabetes and T2DM.
Collapse
Affiliation(s)
- Li-hui Gao
- State Key Laboratory of Bioactive Substance and Function of Natural Medicines, Institute of Materia Medica, Chinese Academy of Medical Sciences and Peking Union Medical College, No. 1 Xiannongtan Street, Beijing 100050, PR China
| | - Quan Liu
- State Key Laboratory of Bioactive Substance and Function of Natural Medicines, Institute of Materia Medica, Chinese Academy of Medical Sciences and Peking Union Medical College, No. 1 Xiannongtan Street, Beijing 100050, PR China
| | - Shuai-nan Liu
- State Key Laboratory of Bioactive Substance and Function of Natural Medicines, Institute of Materia Medica, Chinese Academy of Medical Sciences and Peking Union Medical College, No. 1 Xiannongtan Street, Beijing 100050, PR China
| | - Zhi-yu Chen
- State Key Laboratory of Bioactive Substance and Function of Natural Medicines, Institute of Materia Medica, Chinese Academy of Medical Sciences and Peking Union Medical College, No. 1 Xiannongtan Street, Beijing 100050, PR China
| | - Cai-na Li
- State Key Laboratory of Bioactive Substance and Function of Natural Medicines, Institute of Materia Medica, Chinese Academy of Medical Sciences and Peking Union Medical College, No. 1 Xiannongtan Street, Beijing 100050, PR China
| | - Lei Lei
- State Key Laboratory of Bioactive Substance and Function of Natural Medicines, Institute of Materia Medica, Chinese Academy of Medical Sciences and Peking Union Medical College, No. 1 Xiannongtan Street, Beijing 100050, PR China
| | - Su-juan Sun
- State Key Laboratory of Bioactive Substance and Function of Natural Medicines, Institute of Materia Medica, Chinese Academy of Medical Sciences and Peking Union Medical College, No. 1 Xiannongtan Street, Beijing 100050, PR China
| | - Lin-yi Li
- State Key Laboratory of Bioactive Substance and Function of Natural Medicines, Institute of Materia Medica, Chinese Academy of Medical Sciences and Peking Union Medical College, No. 1 Xiannongtan Street, Beijing 100050, PR China
| | - Jing-long Liu
- State Key Laboratory of Bioactive Substance and Function of Natural Medicines, Institute of Materia Medica, Chinese Academy of Medical Sciences and Peking Union Medical College, No. 1 Xiannongtan Street, Beijing 100050, PR China
| | - Zhu-fang Shen
- State Key Laboratory of Bioactive Substance and Function of Natural Medicines, Institute of Materia Medica, Chinese Academy of Medical Sciences and Peking Union Medical College, No. 1 Xiannongtan Street, Beijing 100050, PR China.
| |
Collapse
|
22
|
Ma X, Zhang K, Li H, Han S, Ma Z, Tu P. Extracts from Astragalus membranaceus limit myocardial cell death and improve cardiac function in a rat model of myocardial ischemia. JOURNAL OF ETHNOPHARMACOLOGY 2013; 149:720-728. [PMID: 23968862 DOI: 10.1016/j.jep.2013.07.036] [Citation(s) in RCA: 41] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/10/2013] [Revised: 07/15/2013] [Accepted: 07/24/2013] [Indexed: 06/02/2023]
Abstract
ETHNOPHARMACOLOGICAL RELEVANCE The root of Astragalus membranaceus, known as "huang-qi", is one of the most widely used Chinese herbal medicines for the prevention and treatment of myocardial ischemic diseases. However, the mechanisms governing its therapeutic effects are largely unknown. AIMS OF THE STUDY The aims of the present study were to investigate the cardioprotective effect of the root extract of Astragalu membranaceus (EAM) in myocardial ischemia and to explore its underlying mechanisms in ROS-mediated signaling cascade in vivo and in vitro. MATERIALS AND METHODS The saponins in EAM were analyzed using HPLC. The tests for the cardioprotective effects of EAM and its mechanisms were performed in vivo and in vitro. In vivo, the rat model of persistent myocardial ischemia was produced by occlusion of the left anterior descending (LAD) coronary artery. In vitro, the cardiomyocyte model of oxidative stress was mimicked by the direct free radical donor, H2O2. RESULTS In vivo, the increased myocardial infarct size and the increased serum levels of lactate dehydrogenase (LDH), creatine kinase isoform MB (CK-MB), and cardiac troponin (cTnI) were significantly decreased by pre-treatment with EAM. Moreover, cardiac function, as assessed by±dP/dt, left ventricular developed pressure (LVDP), and left ventricular end-diastolic pressure (LVEDP), was dramatically improved. An oxidative stress biomarker, malondialdehyde (MDA), was reduced, and the antioxidant enzyme superoxide dismutase (SOD) was induced. In vitro, H2O2-triggered myocardial cell death and cytoplasm Ca(2+) overload were blocked by treatment with EAM. Furthermore, the KATP channel blocker (5-HD, glibenclamide) blocked the anti-apoptotic protective effect of EAM on cardiomyocytes injured by H2O2. CONCLUSIONS The cardioprotection of EAM was manifested as a protection of tissue structure and as a decrease in serum markers of ischemic injury. The mechanisms underlying the EAM-mediated protective effects may involve improving cardiac function, attenuating the oxidative injury via a decrease in MDA, a maintenance in SOD, and a reduction in free radical-induced myocardial cell injury. Additionally, EAM enhanced the myocardial cell viability via arresting the influx of Ca(2+) to block cell death and opening mitochondrial KATP channels to reduce cell apoptosis.
Collapse
Affiliation(s)
- Xu Ma
- State Key Laboratory of Natural and Biomimetic Drugs, School of Pharmaceutical Sciences, Peking University Health Science Center, Beijing 100191, China
| | | | | | | | | | | |
Collapse
|
23
|
Microparticles in atrial fibrillation: A link between cell activation or apoptosis, tissue remodelling and thrombogenicity. Int J Cardiol 2013; 168:660-9. [DOI: 10.1016/j.ijcard.2013.03.031] [Citation(s) in RCA: 38] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/21/2012] [Revised: 12/31/2012] [Accepted: 03/17/2013] [Indexed: 11/24/2022]
|
24
|
Lau KM, Lai KK, Liu CL, Tam JCW, To MH, Kwok HF, Lau CP, Ko CH, Leung PC, Fung KP, Poon SKS, Lau CBS. Synergistic interaction between Astragali Radix and Rehmanniae Radix in a Chinese herbal formula to promote diabetic wound healing. JOURNAL OF ETHNOPHARMACOLOGY 2012; 141:250-256. [PMID: 22366433 DOI: 10.1016/j.jep.2012.02.025] [Citation(s) in RCA: 95] [Impact Index Per Article: 7.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/28/2011] [Revised: 10/13/2011] [Accepted: 02/02/2012] [Indexed: 05/31/2023]
Abstract
ETHNOPHARMACOLOGICAL RELEVANCE Astragali Radix (AR) and Rehmanniae Radix (RR) are two traditional Chinese medicines widely used in China for treating diabetes mellitus and its complications, such as diabetic foot ulcer. AIM OF STUDY In our previous study, a herbal formula NF3 comprising AR and RR in the ratio of 2:1 was found effective in enhancing diabetic wound healing in rats through the actions of tissue regeneration, angiogenesis promotion and inflammation inhibition. The aims of the present study were to investigate the herb-herb interaction (or the possible synergistic effect) between AR and RR in NF3 to promote diabetic wound healing and to identify the principal herb in the formula by evaluating the potencies of individual AR and RR in different mechanistic studies. MATERIALS AND METHODS A chemically induced diabetic foot ulcer rat model was used to examine the wound healing effect of NF3 and its individual herbs AR and RR. For mechanistic studies, murine macrophage cell (RAW 264.7) inflammation, human fibroblast (Hs27) proliferation and human endothelial cell (HMEC-1) migration assays were adopted to investigate the anti-inflammatory, granulation formation and angiogenesis-promoting activities of the herbal extracts, respectively. RESULTS In the foot ulcer animal model, neither AR nor RR at clinical relevant dose (0.98g/kg) promoted diabetic wound healing. However, when they were used in combination as NF3, synergistic interaction was demonstrated, of which NF3 could significantly reduce the wound area of rats when compared to water group (p<0.01). For anti-inflammation and granulation formation, AR was more effective than RR in inhibiting lipopolysaccharide (LPS)-induced nitric oxide production from RAW 264.7 cells and promoting Hs27 fibroblast proliferation. In the aspect of angiogenesis promotion, only NF3 promoted cell migration of HMEC-1 cells. CONCLUSIONS AR plays a preeminent role in the anti-inflammatory and fibroblast-proliferating activities of NF3. The inclusion of RR, however, is crucial for NF3 to exert its overall wound-healing as well as the underlying angiogenesis-promoting effects. The results of present study justified the combined usage of AR and RR in the ratio of 2:1 as NF3 to treat diabetic foot ulcer and illustrated that AR is the principal herb in this herbal formula.
Collapse
Affiliation(s)
- Kit-Man Lau
- Institute of Chinese Medicine, The Chinese University of Hong Kong, Shatin, New Territories, Hong Kong
| | | | | | | | | | | | | | | | | | | | | | | |
Collapse
|
25
|
You Y, Duan Y, Liu SW, Zhang XL, Zhang XL, Feng JT, Yan CH, Han YL. Anti-atherosclerotic function of Astragali Radix extract: downregulation of adhesion molecules in vitro and in vivo. BMC COMPLEMENTARY AND ALTERNATIVE MEDICINE 2012; 12:54. [PMID: 22536886 PMCID: PMC3478196 DOI: 10.1186/1472-6882-12-54] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/20/2011] [Accepted: 04/26/2012] [Indexed: 12/05/2022]
Abstract
Background Atherosclerosis is considered to be a chronic inflammatory disease. Astragali Radix extract (ARE) is one of the major active ingredients extracted from the root of Astragalus membranaceus Bge. Although ARE has an anti-inflammatory function, its anti-atherosclerotic effects and mechanisms have not yet been elucidated. Methods Murine endothelial SVEC4-10 cells were pretreated with different doses of ARE at different times prior to induction with tumor necrosis factor (TNF)-α. Cell adhesion assays were performed using THP-1 cells and assessed by enzyme-linked immunosorbent assay, western blotting and immunofluorescence analyses to detect the expression of vascular cell adhesion molecule-1 (VCAM-1), intercellular adhesion molecule-1 (ICAM-1), phosphorylated inhibitor of κB (p-iκB) and nuclear factor (NF)-κB. We also examined the effect of ARE on atherosclerosis in the aortic endothelium of apolipoprotein E-deficient (apoE−/−) mice. Results TNF-α strongly increased the expression of VCAM-1 and ICAM-1 accompanied by increased expression of p-iκB and NF-κB proteins. However, the expression levels of VCAM-1 and ICAM-1 were reduced by ARE in dose- and time-dependent manners, with the strongest effect at a dose of 120 μg/ml incubated for 4 h. This was accompanied by significantly decreased expression of p-iκB and inhibited activation of NF-κB. Immunofluorescence analysis also revealed that oral administration of ARE resulted in downregulation of adhesion molecules and decreased expression of macrophages in the aortic endothelium of apoE−/− mice. ARE could suppress the inflammatory reaction and inhibit the progression of atherosclerotic lesions in apoE−/− mice. Conclusion This study demonstrated that ARE might be an effective anti-inflammatory agent for the treatment of atherosclerosis, possibly acting via the decreased expression of adhesion molecules.
Collapse
|
26
|
Zhang DW, Bian ZP, Xu JD, Wu HF, Gu CR, Zhou B, Chen XJ, Yang D. Astragaloside IV Alleviates Hypoxia/Reoxygenation-Induced Neonatal Rat Cardiomyocyte Injury via the Protein Kinase A Pathway. Pharmacology 2012; 90:95-101. [DOI: 10.1159/000339476] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/27/2011] [Accepted: 05/14/2012] [Indexed: 11/19/2022]
|
27
|
Law CSL, Leung PY, Ng PKS, Kou CYC, Au KKW, Zhou J, Tsui SKW. The involvement of N-G,N-G-dimethyarginine dimethylhydrolase 1 in the proliferative effect of Astragali radix on cardiac cells. JOURNAL OF ETHNOPHARMACOLOGY 2011; 134:130-135. [PMID: 21130852 DOI: 10.1016/j.jep.2010.11.072] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/07/2010] [Revised: 11/25/2010] [Accepted: 11/27/2010] [Indexed: 05/30/2023]
Abstract
AIM OF THE STUDY Astragali radix (AR) is a widely used traditional medicine in oriental countries for treating various diseases including cardiovascular disease (CVD). We investigated the effects of AR extracts on rat cardiomyocytes and H9C2 cardiac cells as well as identified many target genes that mediate the effect of AR. MATERIALS AND METHODS The effect of AR extracts on cell proliferation was assessed and cDNA microarray technique was used to analyse the differential gene expressions upon AR treatment in cardiac cells. One of the selected target genes was over-expressed to elucidate its role in cell proliferation. RESULTS AR was shown to promote the proliferation of neonatal rat cardiomyocytes and H9C2 cells. Results of cDNA microarray hybridization showed that N-G,N-G-dimethylarginine dimethylaminohydrolase 1 (DDAH1) gene was up-regulated in AR-treated H9C2 cells and the results were further confirmed by reverse transcription polymerase chain reaction. Over-expression of DDAH1 gene in H9C2 cells significantly enhances the cell proliferation. Moreover, a drastic drop of DDAH1 expression in rat ventricular myocardium was observed from day 3 to day 5 after birth, which is the critical transition of cardiomyocytes from hyperplastic to hypertrophic growth. CONCLUSIONS AR promotes cardiac cell proliferation and up-regulates the DDAH1, an enzyme that metabolized the endogenous nitric oxide (NO) synthase inhibitor. The effect of AR on the metabolism of NO deserves future investigation.
Collapse
Affiliation(s)
- Cindy S L Law
- School of Biomedical Sciences, The Chinese University of Hong Kong, Shatin, N.T., Hong Kong
| | | | | | | | | | | | | |
Collapse
|
28
|
Tang JY, Li S, Li ZH, Zhang ZJ, Hu G, Cheang LCV, Alex D, Hoi MPM, Kwan YW, Chan SW, Leung GPH, Lee SMY. Calycosin promotes angiogenesis involving estrogen receptor and mitogen-activated protein kinase (MAPK) signaling pathway in zebrafish and HUVEC. PLoS One 2010; 5:e11822. [PMID: 20686605 PMCID: PMC2912279 DOI: 10.1371/journal.pone.0011822] [Citation(s) in RCA: 91] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/12/2010] [Accepted: 06/16/2010] [Indexed: 01/01/2023] Open
Abstract
Background Angiogenesis plays an important role in a wide range of physiological processes, and many diseases are associated with the dysregulation of angiogenesis. Radix Astragali is a Chinese medicinal herb commonly used for treating cardiovascular disorders and has been shown to possess angiogenic effect in previous studies but its active constituent and underlying mechanism remain unclear. The present study investigates the angiogenic effects of calycosin, a major isoflavonoid isolated from Radix Astragali, in vitro and in vivo. Methodology Tg(fli1:EGFP) and Tg(fli1:nEGFP) transgenic zebrafish embryos were treated with different concentrations of calycosin (10, 30, 100 µM) from 72 hpf to 96 hpf prior morphological observation and angiogenesis phenotypes assessment. Zebrafish embryos were exposed to calycosin (10, 100 µM) from 72 hpf to 78 hpf before gene-expression analysis. The effects of VEGFR tyrosine kinase inhibitor on calycosin-induced angiogenesis were studied using 72 hpf Tg(fli1:EGFP) and Tg(fli1:nEGFP) zebrafish embryos. The pro-angiogenic effects of calycosin were compared with raloxifene and tamoxifen in 72 hpf Tg(fli1:EGFP) zebrafish embryos. The binding affinities of calycosin to estrogen receptors (ERs) were evaluated by cell-free and cell-based estrogen receptor binding assays. Human umbilical vein endothelial cell cultures (HUVEC) were pretreated with different concentrations of calycosin (3, 10, 30, 100 µM) for 48 h then tested for cell viability and tube formation. The role of MAPK signaling in calycosin-induced angiogenesis was evaluated using western blotting. Conclusion Calycosin was shown to induce angiogenesis in human umbilical vein endothelial cell cultures (HUVEC) in vitro and zebrafish embryos in vivo via the up-regulation of vascular endothelial growth factor (VEGF), VEGFR1 and VEGFR2 mRNA expression. It was demonstrated that calycosin acted similar to other selective estrogen receptor modulators (SERMs), such as raloxifene and tamoxifen, by displaying selective potency and affinity to estrogen receptors ERα and ERβ. Our results further indicated that calycosin promotes angiogenesis via activation of MAPK with the involvement of ERK1/2 and ER. Together, this study revealed, for the first time, that calycosin acts as a selective estrogen receptor modulator (SERM) to promote angiogenesis, at least in part through VEGF-VEGFR2 and MAPK signaling pathways.
Collapse
Affiliation(s)
- Jing Yan Tang
- Institute of Chinese Medical Sciences, University of Macau, Macao, China
| | | | | | | | | | | | | | | | | | | | | | | |
Collapse
|
29
|
Ahmad R, Javed S, Bhandari U. Antiapoptotic potential of herbal drugs in cardiovascular disorders: an overview. PHARMACEUTICAL BIOLOGY 2010; 48:358-374. [PMID: 20645713 DOI: 10.3109/13880200903133852] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/29/2023]
Abstract
Cardiomyocyte apoptosis has been reported in a number of cardiovascular disorders, including myocardial infarction, ischemia-reperfusion, end-stage heart failure, arrhythmogenic right ventricular dysplasia, and adriamycin-induced cardiomyopathy. Prevention of myocyte apoptosis has emerged as a potential new target in a multimodel therapeutic approach to cardiac disease. Herbal therapy may be an alternative strategy for the prevention and treatment of heart disease. The present review summarizes the list of plants/herbal formulations studied for their antiapoptotic activity in cardiovascular disorders. However, despite extensive positive research data from experimental studies for herbal drugs in cardiovascular disorders, and the anecdotal clinical experience of many practitioners and patients, its potential in the field of cardiac apoptosis remains largely untapped, and large scale clinical trials are needed to explore the potential of herbal medicines as a new treatment regime for targeting cardiovascular apoptosis.
Collapse
Affiliation(s)
- Rahila Ahmad
- Department of Pharmacology, Faculty of Pharmacy, Hamdard University, New Delhi, India
| | | | | |
Collapse
|
30
|
Yao H, Shi P, Zhang L, Fan X, Shao Q, Cheng Y. Untargeted metabolic profiling reveals potential biomarkers in myocardial infarction and its application. MOLECULAR BIOSYSTEMS 2010; 6:1061-70. [DOI: 10.1039/b925612a] [Citation(s) in RCA: 39] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
|
31
|
Xu A, Wang H, Hoo RLC, Sweeney G, Vanhoutte PM, Wang Y, Wu D, Chu W, Qin G, Lam KSL. Selective elevation of adiponectin production by the natural compounds derived from a medicinal herb alleviates insulin resistance and glucose intolerance in obese mice. Endocrinology 2009; 150:625-33. [PMID: 18927219 PMCID: PMC2732290 DOI: 10.1210/en.2008-0999] [Citation(s) in RCA: 71] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
Adiponectin is an adipocyte-derived insulin-sensitizing hormone with antidiabetic, antiinflammatory, and antiatherosclerotic properties. A decreased serum level of adiponectin in obesity has been identified as an independent risk factor for diabetes and cardiovascular complications, suggesting that pharmacological intervention aimed at elevating adiponectin production might hold promise for the treatment and/or prevention of these diseases. Here we report the identification of two structurally related natural compounds (astragaloside II and isoastragaloside I) from the medicinal herb Radix Astragali that possess such an activity. Astragaloside II and isoastragaloside I selectively increased adiponectin secretion in primary adipocytes without any obvious effects on a panel of other adipokines. Furthermore, an additive effect on induction of adiponectin production was observed between these two compounds and rosiglitazone, a thiazolidinedione class of insulin-sensitizing drugs. Chronic administration of astragaloside II and isoastragaloside I in both dietary and genetic obese mice significantly elevated serum levels of total adiponectin and selectively increased the composition of its high molecular weight oligomeric complex. These changes were associated with an alleviation of hyperglycemia, glucose intolerance, and insulin resistance. By contrast, the beneficial effects of these two compounds on insulin sensitivity and glucose metabolism were diminished in adiponectin knockout mice. In conclusion, our results suggest that pharmacological elevation of circulating adiponectin alone is sufficient to ameliorate insulin resistance and diabetes and support the use of adiponectin as a biomarker for future drug discovery. The two natural compounds might provide the lead as a novel class of therapeutics for obesity-related diseases.
Collapse
Affiliation(s)
- Aimin Xu
- Department of Medicine and Research Center for Heart, Brain, Hormones, and Healthy Aging, University of Hong Kong, Hong Kong.
| | | | | | | | | | | | | | | | | | | |
Collapse
|