1
|
Lv X, Wang X, Wang X, Han Y, Chen H, Hao Y, Zhang H, Cui C, Gao Q, Zheng Z. Research progress in arthritis treatment with the active components of Herba siegesbeckiae. Biomed Pharmacother 2023; 169:115939. [PMID: 38007937 DOI: 10.1016/j.biopha.2023.115939] [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: 10/06/2023] [Revised: 11/18/2023] [Accepted: 11/21/2023] [Indexed: 11/28/2023] Open
Abstract
Arthritis is a group of diseases characterized by joint pain, swelling, stiffness, and limited movement. Osteoarthritis, rheumatoid arthritis, and gouty arthritis are the most common types of arthritis. Arthritis severely affects the quality of life of patients and imposes a heavy financial and medical burden on their families and society at large. As a widely used traditional Chinese medicine, Herba siegesbeckiae has many pharmacological effects such as anti-inflammatory and analgesic, anti-ischemic injury, cardiovascular protection, and hypoglycemic. In addition, it has significant therapeutic effects on arthritis. The rich chemical compositions of H. siegesbeckiae primarily include diterpenoids, sesquiterpenoids, and flavonoids. As one of the main active components of H. siegesbeckiae, kirenol and quercetin play a vital role in reducing arthritis symptoms. In the present study, the research progress in arthritis treatment with the active components of H. siegesbeckiae is reviewed.
Collapse
Affiliation(s)
- Xiaoqian Lv
- Binzhou Medical University, 264003 Yantai, China
| | - Xiaoyu Wang
- The Affiliated Taian City Central Hospital of Qingdao University, 271000 Taian, China
| | - Xuelei Wang
- Binzhou Medical University, 264003 Yantai, China
| | - Yunna Han
- Binzhou Medical University, 264003 Yantai, China
| | - Haoyue Chen
- The Affiliated Taian City Central Hospital of Qingdao University, 271000 Taian, China
| | - Yuwen Hao
- The Affiliated Taian City Central Hospital of Qingdao University, 271000 Taian, China
| | - Hao Zhang
- The Affiliated Taian City Central Hospital of Qingdao University, 271000 Taian, China
| | - Chao Cui
- The Affiliated Taian City Central Hospital of Qingdao University, 271000 Taian, China
| | - Qiang Gao
- The Affiliated Taian City Central Hospital of Qingdao University, 271000 Taian, China.
| | - Zuncheng Zheng
- The Affiliated Taian City Central Hospital of Qingdao University, 271000 Taian, China.
| |
Collapse
|
2
|
Nasir NN, Sekar M, Fuloria S, Gan SH, Rani NNIM, Ravi S, Begum MY, Chidambaram K, Sathasivam KV, Jeyabalan S, Dhiravidamani A, Thangavelu L, Lum PT, Subramaniyan V, Wu YS, Azad AK, Fuloria NK. Kirenol: A Potential Natural Lead Molecule for a New Drug Design, Development, and Therapy for Inflammation. MOLECULES (BASEL, SWITZERLAND) 2022; 27:molecules27030734. [PMID: 35163999 PMCID: PMC8839644 DOI: 10.3390/molecules27030734] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/29/2021] [Revised: 01/16/2022] [Accepted: 01/20/2022] [Indexed: 12/26/2022]
Abstract
Kirenol, a potential natural diterpenoid molecule, is mainly found in Sigesbeckia species. Kirenol has received a lot of interest in recent years due to its wide range of pharmacological actions. In particular, it has a significant ability to interact with a wide range of molecular targets associated with inflammation. In this review, we summarise the efficacy and safety of kirenol in reducing inflammation, as well as its potential mechanisms of action and opportunities in future drug development. Based on the preclinical studies reported earlier, kirenol has a good therapeutic potential against inflammation involved in multiple sclerosis, inflammatory bowel disorders, diabetic wounds, arthritis, cardiovascular disease, bone damage, and joint disorders. We also address the physicochemical and drug-like features of kirenol, as well as the structurally modified kirenol-derived molecules. The inhibition of pro-inflammatory cytokines, reduction in the nuclear factor kappa-B (NF-κB), attenuation of antioxidant enzymes, stimulation of heme-oxygenase-1 (HO-1) expression, and nuclear factor erythroid 2-related factor 2 (Nrf2) phosphorylation are among the molecular mechanisms contributing to kirenol's anti-inflammatory actions. Furthermore, this review also highlights the challenges and opportunities to improve the drug delivery of kirenol for treating inflammation. According to the findings of this review, kirenol is an active molecule against inflammation in numerous preclinical models, indicating a path to using it for new drug discovery and development in the treatment of a wide range of inflammations.
Collapse
Affiliation(s)
- Naurah Nabihah Nasir
- Department of Pharmaceutical Chemistry, Faculty of Pharmacy and Health Sciences, Royal College of Medicine Perak, University Kuala Lumpur, Ipoh 30450, Perak, Malaysia; (N.N.N.); (P.T.L.)
| | - Mahendran Sekar
- Department of Pharmaceutical Chemistry, Faculty of Pharmacy and Health Sciences, Royal College of Medicine Perak, University Kuala Lumpur, Ipoh 30450, Perak, Malaysia; (N.N.N.); (P.T.L.)
- Correspondence: (M.S.); (S.F.); (N.K.F.); Tel.: +60-163346653 (M.S.); +60-143034057 (S.F.); +60-164037685 (N.K.F.)
| | - Shivkanya Fuloria
- Faculty of Pharmacy, AIMST University, Bedong 08100, Kedah, Malaysia;
- Correspondence: (M.S.); (S.F.); (N.K.F.); Tel.: +60-163346653 (M.S.); +60-143034057 (S.F.); +60-164037685 (N.K.F.)
| | - Siew Hua Gan
- School of Pharmacy, Monash University Malaysia, Bandar Sunway 47500, Selangor, Malaysia;
| | - Nur Najihah Izzati Mat Rani
- Faculty of Pharmacy and Health Sciences, Royal College of Medicine Perak, University Kuala Lumpur, Ipoh 30450, Perak, Malaysia;
| | - Subban Ravi
- Department of Chemistry, Karpagam Academy of Higher Education, Coimbatore 641021, Tamil Nadu, India;
| | - M. Yasmin Begum
- Department of Pharmaceutics, College of Pharmacy, King Khalid University, Abha 61421, Saudi Arabia;
| | - Kumarappan Chidambaram
- Department of Pharmacology, College of Pharmacy, King Khalid University, Abha 62529, Saudi Arabia;
| | | | - Srikanth Jeyabalan
- Department of Pharmacology, Sri Ramachandra Faculty of Pharmacy, Sri Ramachandra Institute of Higher Education and Research (DU), Porur, Chennai 600116, Tamil Nadu, India; (S.J.); (A.D.)
| | - Arulmozhi Dhiravidamani
- Department of Pharmacology, Sri Ramachandra Faculty of Pharmacy, Sri Ramachandra Institute of Higher Education and Research (DU), Porur, Chennai 600116, Tamil Nadu, India; (S.J.); (A.D.)
| | - Lakshmi Thangavelu
- Center for Transdisciplinary Research, Department of Pharmacology, Saveetha Institute of Medical and Technical Sciences, Saveetha Dental College and Hospital, Saveetha University, Chennai 600077, Tamil Nadu, India;
| | - Pei Teng Lum
- Department of Pharmaceutical Chemistry, Faculty of Pharmacy and Health Sciences, Royal College of Medicine Perak, University Kuala Lumpur, Ipoh 30450, Perak, Malaysia; (N.N.N.); (P.T.L.)
| | - Vetriselvan Subramaniyan
- Faculty of Medicine, Bioscience and Nursing, MAHSA University, Jalan SP 2, Bandar Saujana Putra, Jenjarom 42610, Selangor, Malaysia;
| | - Yuan Seng Wu
- Centre for Virus and Vaccine Research, School of Medical and Life Sciences, Sunway University, Subang Jaya 47500, Selangor, Malaysia;
- Department of Biological Sciences, School of Medical and Life Sciences, Sunway University, Subang Jaya 47500, Selangor, Malaysia
| | - Abul Kalam Azad
- Faculty of Pharmacy, AIMST University, Bedong 08100, Kedah, Malaysia;
| | - Neeraj Kumar Fuloria
- Faculty of Pharmacy, AIMST University, Bedong 08100, Kedah, Malaysia;
- Center for Transdisciplinary Research, Department of Pharmacology, Saveetha Institute of Medical and Technical Sciences, Saveetha Dental College and Hospital, Saveetha University, Chennai 600077, Tamil Nadu, India;
- Correspondence: (M.S.); (S.F.); (N.K.F.); Tel.: +60-163346653 (M.S.); +60-143034057 (S.F.); +60-164037685 (N.K.F.)
| |
Collapse
|
3
|
Ibrahim SRM, Altyar AE, Sindi IA, El-Agamy DS, Abdallah HM, Mohamed SGA, Mohamed GA. Kirenol: A promising bioactive metabolite from siegesbeckia species: A detailed review. JOURNAL OF ETHNOPHARMACOLOGY 2021; 281:114552. [PMID: 34438028 DOI: 10.1016/j.jep.2021.114552] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/25/2021] [Revised: 08/06/2021] [Accepted: 08/20/2021] [Indexed: 06/13/2023]
Abstract
ETHNOPHARMACOLOGICAL RELEVANCE Kirenol (Kr) is an ent-pimarane type diterpenoid that has been reported from Siegesbeckiaorientalis, S. pubescens, and S. glabrescens (family Asteraceae). These plants have been used traditionally for treating various ailments such as hypertension, neurasthenia, rheumatoid arthritis, asthma, snakebites, allergic disorders, paralysis, soreness, cutaneous disorders, rubella, menstrual disorders, numbness of limbs, dizziness, headache, and malaria. Importantly, in recent years, Kr has received great attention due to its diversified pharmacological activities. AIM OF THE STUDY The current work aims to give an overview on the reported pharmacological activities of Kr. Furthermore, the findings regarding its methods for extraction, quantitative analysis, purification, pharmacokinetics, pharmaceutical and food preparations, biosynthesis, identification, semisynthetic analogues, and toxicity are highlighted to provide a reference and perspective for its further investigation. METHODS Electronic databases including ScienceDirect, Web of Knowledge, SCOPUS, Wiley Online Library, Taylor & Francis, PubMed, Springer, JACS, and Google Scholar were searched up to the beginning of 2021 to identify the reported studies. RESULTS A total of 93 articles have been reviewed. The reported data suggested that Kr possessed various bioactivities including cytotoxic, apoptotic, anticancer, anti-inflammatory, cardio-protective, anti-photo-aging, anti-adipogenic, antimicrobial, muscle function improvement, fracture and wound healing, and anti-arthritic. In addition, studies revealed that the antioxidative and anti-inflammatory activities of Kr may mediate many of its therapeutic potentials as confirmed by several in-vitro and in-vivo studies. CONCLUSION This review provides an updated summary of the recent studies on Kr, including methods for extraction, quantitative analysis, purification, pharmacokinetics, pharmaceutical and food preparations, biosynthesis, and identification, as well as semisynthetic analogues, pharmacological activities, and toxicity. Thus, this work can provide useful considerations for planning and design future research on Kr.
Collapse
Affiliation(s)
- Sabrin R M Ibrahim
- Batterjee Medical College, Preparatory Year Program, Jeddah, 21442, Saudi Arabia; Department of Pharmacognosy, Faculty of Pharmacy, Assiut University, Assiut, 71526, Egypt.
| | - Ahmed E Altyar
- Department of Pharmacy Practice, Faculty of Pharmacy, King Abdulaziz University, Jeddah, 21589, Saudi Arabia.
| | - Ikhlas A Sindi
- Department of Biology, Faculty of Science, King Abdulaziz University, Jeddah, 21589, Saudi Arabia.
| | - Dina S El-Agamy
- Department of Pharmacology and Toxicology, College of Pharmacy, Taibah University, Al-Madinah, Al-Munawwarah, 30078, Saudi Arabia; Department of Pharmacology and Toxicology, Faculty of Pharmacy, Mansoura University, Mansoura, 35516, Egypt.
| | - Hossam M Abdallah
- Department of Natural Products and Alternative Medicine, Faculty of Pharmacy, King Abdulaziz University, Jeddah, 21589, Saudi Arabia; Department of Pharmacognosy, Faculty of Pharmacy, Cairo University, Cairo, 11562, Egypt.
| | - Shaimaa G A Mohamed
- Faculty of Dentistry, British University, El Sherouk City, Suez Desert Road, Cairo, 11837, Egypt.
| | - Gamal A Mohamed
- Department of Natural Products and Alternative Medicine, Faculty of Pharmacy, King Abdulaziz University, Jeddah, 21589, Saudi Arabia; Department of Pharmacognosy, Faculty of Pharmacy, Al-Azhar University, Assiut Branch, Assiut, 71524, Egypt.
| |
Collapse
|
4
|
Protective Effects of Kirenol against Lipopolysaccharide-Induced Acute Lung Injury through the Modulation of the Proinflammatory NFκB Pathway and the AMPK2-/Nrf2-Mediated HO-1/AOE Pathway. Antioxidants (Basel) 2021; 10:antiox10020204. [PMID: 33572510 PMCID: PMC7911485 DOI: 10.3390/antiox10020204] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/04/2021] [Revised: 01/22/2021] [Accepted: 01/28/2021] [Indexed: 12/27/2022] Open
Abstract
Acute lung injury (ALI) is an acute and life-threatening inflammatory disease of the lung parenchyma that is associated with high mortality worldwide. No therapeutic strategies have been developed for the mitigation of the proinflammatory response that characterizes ALI. Kirenol has anti-inflammatory, antiarthritic, and immunoregulatory effects. In the present study, we investigated the protective effects of kirenol against lipopolysaccharides (LPS)-induced ALI in mice. Kirenol reduced the LPS-induced histopathology changes involving edema and thickening of the interstitial or alveolar walls, infiltration of leukocytes, formation of hyaline membrane. Pretreatment with kirenol reduced leukocytes infiltration in bronchoalveolar lavage fluid (BALF), the alveolar-capillary barrier disruption and lipid peroxidation in lung tissues induced by LPS. Kirenol significantly inhibited the secretion of cytokines, IL-1β, IL6, and TNFα, into the BALF of the mice with LPS-induced ALI through NFκB activation. Moreover, kirenol attenuated the downregulation of the antioxidant enzymes, superoxide dismutase, glutathione peroxidase, and catalase that was induced by LPS. HO-1 expression and the phosphorylation of Nrf2 and AMPK2 were also induced by kirenol. The results indicate that kirenol can be developed as a treatment strategy for ALI, and its effects are induced through the inhibition of the NF-κB proinflammatory pathway and promotion of AMPK2/Nrf2-mediated HO-1 and antioxidant enzymes (AOE) activation.
Collapse
|
5
|
Wei J, Shao J, Li Y, Li Y. A sensitive HPLC-FLD method for the quantification of 6-O-demethylmenisporphine isolated from Menispermi Rhizoma in rat plasma. J Anal Sci Technol 2021. [DOI: 10.1186/s40543-020-00255-1] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
Abstract
Abstract
Background
To investigate the pharmacokinetics of 6-O-demethylmenisporphine, an oxoisoaporphine alkaloid with significant anti-tumor activities and isolated from Menispermi Rhizoma, a novel and sensitive HPLC assay was established for 6-O-demethylmenisporphine quantification in rat plasma.
Methods
Peak responses were detected by a highly selective and sensitive fluorescence detector with 426-nm excitation and 514-nm emission wavelengths. Curcumin was employed as the internal standard (IS). A Capcell Pak C18 column (150 mm × 4.6 mm i.d., 5 μm) and an isocratic elution procedure with a flow rate of 1.0 mL/min were used to exclude the endogenous interfering substance. Acetonitrile-water (68:32, v/v) containing 1% formic acid was employed as mobile phase. A 7-point calibration curve that covered the concentration range of 10–2500 ng/mL was constructed.
Results
A good linearity was observed with a correlation coefficient (r) of 0.9993. The lower limit of quantification for 6-O-demethylmenisporphine was 10 ng/mL. The mean recoveries of analyte in rat plasma exceeded 80.5%. The precision at four concentration levels was within 11.3% and the accuracy ranged from − 7.6 to 6.7%.
Conclusion
Using this new HPLC-FLD method, the investigation of plasma samples from rats following oral dosing of neat compound and Menispermi Rhizoma extract was successfully conducted. The results will provide a reference for the evaluation of preclinical safety of 6-O-demethylmenisporphine.
Collapse
|
6
|
Xiuhong L, Yajun DU, Guoxing L, Guomei D, Xin T, Juan X. [Kirenol relieves dextran sulfate sodium-induced ulcerative colitis in mice by inhibiting inflammatory cytokines and inducing CD4 + T lymphocyte apoptosis]. NAN FANG YI KE DA XUE XUE BAO = JOURNAL OF SOUTHERN MEDICAL UNIVERSITY 2020; 39:1387-1392. [PMID: 31907162 DOI: 10.12122/j.issn.1673-4254.2019.12.01] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
OBJECTIVE To investigate whether kirenol, the major pharmacologically active compound of the Chinese medicinal herb Herba Siegesbeckiae, can protect mice from dextran sulfate sodium (DSS)-induced ulcerative colitis (UC). METHODS C57BL/6 mice with or without kirenol pretreatment were treated with DSS in drinking water for 7 days to induce UC. The symptoms of UC including weight loss, diarrhea and bloody stool were observed daily and graded using the disease activity index (DAI). Colon injury of the mice was assessed by measuring the length of the colon and HE staining of the colon tissue. The levels of inflammatory cytokines produced by the mesenteric lymph nodes (MLNs) lymphocytes were measured using enzyme-linked immunosorbent assay; the apoptosis of the lymphocytes and CD4+ T cells was analyzed using flow cytometry. RESULTS The mice receiving pretreatment with kirenol showed obviously ameliorated symptoms of UC and milder pathological changes in the colon as compared with the control mice. Kirenol treatment significantly down-regulated the secretion of IFN-γ, IL-17A, IL-6 and TNF-α by the MLNs lymphocytes and increased the apoptosis of lymphocytes, especially CD4+ T cells in the DSS-treated mice. CONCLUSIONS Kirenol can protect against T cell-mediated colon injury in DSS-treated mice possibly by suppressing the secretion of inflammatory mediators and inducing apoptosis of the inflammatory lymphocytes.
Collapse
Affiliation(s)
- Liu Xiuhong
- Zaoyang First People's Hospital (Affiliated Zaoyang Hospital of Hubei University of Arts and Science), Xiangyang 441200, China.,Laboratory of Molecular Medicine, Hubei University of Arts and Science, Xiangyang 441053, China
| | - D U Yajun
- Zaoyang First People's Hospital (Affiliated Zaoyang Hospital of Hubei University of Arts and Science), Xiangyang 441200, China.,Laboratory of Molecular Medicine, Hubei University of Arts and Science, Xiangyang 441053, China
| | - Liu Guoxing
- Zaoyang First People's Hospital (Affiliated Zaoyang Hospital of Hubei University of Arts and Science), Xiangyang 441200, China.,Laboratory of Molecular Medicine, Hubei University of Arts and Science, Xiangyang 441053, China
| | - Dan Guomei
- Zaoyang First People's Hospital (Affiliated Zaoyang Hospital of Hubei University of Arts and Science), Xiangyang 441200, China.,Laboratory of Molecular Medicine, Hubei University of Arts and Science, Xiangyang 441053, China
| | - Tong Xin
- Laboratory of Molecular Medicine, Hubei University of Arts and Science, Xiangyang 441053, China
| | - Xiao Juan
- Laboratory of Molecular Medicine, Hubei University of Arts and Science, Xiangyang 441053, China
| |
Collapse
|
7
|
Wu J, Li Q, Jin L, Qu Y, Liang BB, Zhu XT, Du HY, Jie LG, Yu QH. Kirenol Inhibits the Function and Inflammation of Fibroblast-like Synoviocytes in Rheumatoid Arthritis in vitro and in vivo. Front Immunol 2019; 10:1304. [PMID: 31244849 PMCID: PMC6563775 DOI: 10.3389/fimmu.2019.01304] [Citation(s) in RCA: 32] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/04/2019] [Accepted: 05/22/2019] [Indexed: 01/23/2023] Open
Abstract
Kirenol is a diterpenoid extracted from the Chinese herbal medicine Siegesbeckiae. Siegesbeckiae has been used to treat Rheumatoid arthritis (RA) in China for several centuries. RA is characterized by the proliferation of synoviocytes in inflamed synovia, as well as by their expression of inflammatory cytokines. In the present study, we found that Kirenol inhibited the migration, invasion, and proinflammatory of IL-6 secretion of RA-associated synovial fibroblasts (FLS) at a concentration of 100–200 μg/ml in vitro. Proinflammatory cytokines production and synovium hyperplasia and cartilage erosion were also inhibited in a collagen-induced arthritis (CIA) mouse model upon Kirenol treatment. Together, our results thus confirm that Kirenol has potent therapeutic efficacy in RA owing to its ability to suppress negative FLS activities.
Collapse
Affiliation(s)
- Jing Wu
- Rheumatology and Clinical Immunology, ZhuJiang Hospital,Southern Medical University, Guangzhou, China
| | - Qiang Li
- Rheumatology and Clinical Immunology, ZhuJiang Hospital,Southern Medical University, Guangzhou, China
| | - Li Jin
- Rheumatology and Clinical Immunology, ZhuJiang Hospital,Southern Medical University, Guangzhou, China
| | - Yuan Qu
- Rheumatology and Clinical Immunology, ZhuJiang Hospital,Southern Medical University, Guangzhou, China
| | - Bi-Bo Liang
- Rheumatology and Clinical Immunology, ZhuJiang Hospital,Southern Medical University, Guangzhou, China
| | - Xiao-Tong Zhu
- Rheumatology and Clinical Immunology, ZhuJiang Hospital,Southern Medical University, Guangzhou, China
| | - Hong-Yan Du
- School of Laboratory Medicine and Biotechnology, Southern Medical University, Guangzhou, China
| | - Li-Gang Jie
- Rheumatology and Clinical Immunology, ZhuJiang Hospital,Southern Medical University, Guangzhou, China
| | - Qing-Hong Yu
- Rheumatology and Clinical Immunology, ZhuJiang Hospital,Southern Medical University, Guangzhou, China
| |
Collapse
|
8
|
Kirenol attenuates experimental autoimmune encephalomyelitis by inhibiting differentiation of Th1 and th17 cells and inducing apoptosis of effector T cells. Sci Rep 2015; 5:9022. [PMID: 25762107 PMCID: PMC4356981 DOI: 10.1038/srep09022] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/14/2014] [Accepted: 02/12/2015] [Indexed: 01/08/2023] Open
Abstract
Experimental autoimmune encephalomyelitis (EAE), a model of multiple sclerosis (MS), is characterized by CNS demyelination mediated by autoreactive T cells. Kirenol, a biologically active substance isolated from Herba Siegesbeckiae, has potent anti-inflammatory activities. Here we investigated effects of kirenol on EAE. Kirenol treatment markedly delayed onset of disease and reduced clinical scores in EAE mice. Kirenol treatment reduced expression of IFN-γ and IL-17A in the serum and proportion of Th1 and Th17 cells in draining lymph nodes. Priming of lymphocytes was reduced and apoptosis of MOG-activated CD4+ T cells was increased in kirenol treated EAE mice. Kirenol treatment of healthy animals did not affect the lymphocytes in these non-immunized mice. Further in vitro studies showed that kirenol inhibited viability of MOG-specific lymphocytes and induced apoptosis of MOG-specific CD4+ T cells in a dose- and time-dependent manner. Kirenol treatment upregulated Bax,downregulated Bcl-2,and increased activation of caspase-3 and release of cytochrome c, indicating that a mitochondrial pathway was involved in kirenol induced apoptosis. Moreover, pretreatment with either a pan-caspase inhibitor z-VAD-fmk or a more specific caspase 3 inhibitor Ac-DEVD-CHO in lymphocytes reduced kirenol induced apoptosis. Our findings implicate kirenol as a useful agent for the treatment of MS.
Collapse
|
9
|
Li J, Ma B, Zhang Q, Yang X, Sun J, Tang B, Cui G, Yao D, Liu L, Gu G, Zhu J, Wei P, Ouyang P. Simultaneous determination of osthole, bergapten and isopimpinellin in rat plasma and tissues by liquid chromatography–tandem mass spectrometry. J Chromatogr B Analyt Technol Biomed Life Sci 2014; 970:77-85. [DOI: 10.1016/j.jchromb.2014.06.014] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/26/2014] [Revised: 06/09/2014] [Accepted: 06/13/2014] [Indexed: 12/01/2022]
|
10
|
Kim MB, Song Y, Hwang JK. Kirenol stimulates osteoblast differentiation through activation of the BMP and Wnt/β-catenin signaling pathways in MC3T3-E1 cells. Fitoterapia 2014; 98:59-65. [DOI: 10.1016/j.fitote.2014.07.013] [Citation(s) in RCA: 76] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/19/2014] [Revised: 07/13/2014] [Accepted: 07/15/2014] [Indexed: 11/27/2022]
|
11
|
Kirenol inhibits adipogenesis through activation of the Wnt/β-catenin signaling pathway in 3T3-L1 adipocytes. Biochem Biophys Res Commun 2014; 445:433-8. [PMID: 24530909 DOI: 10.1016/j.bbrc.2014.02.017] [Citation(s) in RCA: 46] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2014] [Accepted: 02/05/2014] [Indexed: 01/31/2023]
Abstract
Kirenol, a natural diterpenoid compound, has been reported to possess anti-oxidant, anti-inflammatory, anti-allergic, and anti-arthritic activities; however, its anti-adipogenic effect remains to be studied. The present study evaluated the effect of kirenol on anti-adipogenesis through the activation of the Wnt/β-catenin signaling pathway. Kirenol prevented intracellular lipid accumulation by down-regulating key adipogenesis transcription factors [peroxisome proliferator-activated receptor γ (PPARγ), CCAAT/enhancer binding proteins α (C/EBPα), and sterol regulatory element binding protein-1c (SREBP-1c)] and lipid biosynthesis-related enzymes [fatty acid synthase (FAS) and acetyl-CoA carboxylase (ACC)], as well as adipocytokines (adiponectin and leptin). Kirenol effectively activated the Wnt/β-catenin signaling pathway, in which kirenol up-regulated the expression of low density lipoprotein receptor related protein 6 (LRP6), disheveled 2 (DVL2), β-catenin, and cyclin D1 (CCND1), while it inactivated glycogen synthase kinase 3β (GSK3β) by increasing its phosphorylation. Kirenol down-regulated the expression levels of PPARγ and C/EBPα, which were up-regulated by siRNA knockdown of β-catenin. Overall, kirenol is capable of inhibiting the differentiation and lipogenesis of 3T3-L1 adipocytes through the activation of the Wnt/β-catenin signaling pathway, suggesting its potential as natural anti-obesity agent.
Collapse
|