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Zheng LX, Guo KE, Huang JQ, Liu MH, Deng BL, Liu DY, Zhou BG, Zhou W, Zhong YB, Zhao HM. Curcumin alleviated dextran sulfate sodium-induced colitis by recovering memory Th/Tfh subset balance. World J Gastroenterol 2023; 29:5226-5239. [PMID: 37901446 PMCID: PMC10600958 DOI: 10.3748/wjg.v29.i36.5226] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/16/2023] [Revised: 08/26/2023] [Accepted: 09/07/2023] [Indexed: 09/20/2023] Open
Abstract
BACKGROUND Restoration of immune homeostasis by targeting the balance between memory T helper (mTh) cells and memory follicular T helper (mTfh) cells is a potential therapeutic strategy against ulcerative colitis (UC). Because of its anti-inflammatory and immunomodulatory properties, curcumin (Cur) is a promising drug for UC treatment. However, fewer studies have demonstrated whether Cur can modulate the mTh/mTfh subset balance in mice with colitis. AIM To explore the potential mechanism underlying Cur-mediated alleviation of colitis induced by dextran sulfate sodium (DSS) in mice by regulating the mTh and mTfh immune homeostasis. METHODS Balb/c mice were administered 3% and 2% DSS to establish the UC model and treated with Cur (200 mg/kg/d) by gavage on days 11-17. On the 18th d, all mice were anesthetized and euthanized, and the colonic length, colonic weight, and colonic weight index were evaluated. Histomorphological changes in the mouse colon were observed through hematoxylin-eosin staining. Levels of Th/mTh and Tfh/mTfh cell subsets in the spleen were detected through flow cytometry. Western blotting was performed to detect SOCS-1, SOCS-3, STAT3, p-STAT3, JAK1, p-JAK1, and NF-κB p65 protein expression levels in colon tissues. RESULTS Cur effectively mitigates DSS-induced colitis, facilitates the restoration of mouse weight and colonic length, and diminishes the colonic weight and colonic weight index. Simultaneously, it hinders ulcer development and inflammatory cell infiltration in the colonic mucous membrane. While the percentage of Th1, mTh1, Th7, mTh7, Th17, mTh17, Tfh1, mTfh1, Tfh7, mTfh7, Tfh17, and mTfh17 cells decreased after Cur treatment of the mice for 7 d, and the frequency of mTh10, Th10, mTfh10, and Tfh10 cells in the mouse spleen increased. Further studies revealed that Cur administration prominently decreased the SOCS-1, SOCS-3, STAT3, p-STAT3, JAK1, p-JAK1, and NF-κB p65 protein expression levels in the colon tissue. CONCLUSION Cur regulated the mTh/mTfh cell homeostasis to reduce DSS-induced colonic pathological damage, potentially by suppressing the JAK1/STAT3/SOCS signaling pathway.
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Affiliation(s)
- Lin-Xin Zheng
- Department of Postgraduate, Jiangxi University of Chinese Medicine, Nanchang 330004, Jiangxi Province, China
| | - Kai-En Guo
- Department of Postgraduate, Jiangxi University of Chinese Medicine, Nanchang 330004, Jiangxi Province, China
| | - Jia-Qi Huang
- Department of Postgraduate, Jiangxi University of Chinese Medicine, Nanchang 330004, Jiangxi Province, China
| | - Miao-Hua Liu
- Department of Postgraduate, Jiangxi University of Chinese Medicine, Nanchang 330004, Jiangxi Province, China
| | - Bai-Ling Deng
- College of Traditional Chinese Medicine, Jiangxi University of Chinese Medicine, Nanchang 330004, Jiangxi Province, China
| | - Duan-Yong Liu
- Formula-Pattern Research Center, Jiangxi University of Chinese Medicine, Nanchang 330004, Jiangxi Province, China
| | - Bu-Gao Zhou
- Formula-Pattern Research Center, Jiangxi University of Chinese Medicine, Nanchang 330004, Jiangxi Province, China
| | - Wen Zhou
- Nanchang Medical College, Nanchang 330052, Jiangxi Province, China
| | - You-Bao Zhong
- Laboratory Animal Research Center for Science and Technology, Jiangxi University of Chinese Medicine, Nanchang 330004, Jiangxi Province, China
| | - Hai-Mei Zhao
- College of Traditional Chinese Medicine, Jiangxi University of Chinese Medicine, Nanchang 330004, Jiangxi Province, China
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Li X, Yuan W, Wu J, Zhen J, Sun Q, Yu M. Andrographolide, a natural anti-inflammatory agent: An Update. Front Pharmacol 2022; 13:920435. [PMID: 36238575 PMCID: PMC9551308 DOI: 10.3389/fphar.2022.920435] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/14/2022] [Accepted: 08/31/2022] [Indexed: 12/15/2022] Open
Abstract
Botanicals have attracted much attention in the field of anti-inflammatory due to their good pharmacological activity and efficacy. Andrographis paniculata is a natural plant ingredient that is widely used around the world. Andrographolide is the main active ingredient derived from Andrographis paniculata, which has a good effect on the treatment of inflammatory diseases. This article reviews the application, anti-inflammatory mechanism and molecular targets of andrographolide in different inflammatory diseases, including respiratory, digestive, immune, nervous, cardiovascular, skeletal, and tumor system diseases. And describe its toxicity and explain its safety. Studies have shown that andrographolide can be used to treat inflammatory lesions of various systemic diseases. In particular, it acts on many inflammation-related signalling pathways. The future direction of andrographolide research is also introduced, as is the recent research that indicates its potential clinical application as an anti-inflammatory agent.
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Affiliation(s)
- Xiaohong Li
- First Clinical School of Medicine, Shandong University of Traditional Chinese Medicine, Jinan, China
- School of Life Sciences, Beijing University of Chinese Medicine, Beijing, China
- *Correspondence: Xiaohong Li,
| | - Weichen Yuan
- College of Traditional Chinese Medicine, Shandong University of Traditional Chinese Medicine, Jinan, China
| | - Jibiao Wu
- Shandong University of Traditional Chinese Medicine, Jinan, China
| | - Jianhua Zhen
- School of Life Sciences, Beijing University of Chinese Medicine, Beijing, China
| | - Qihui Sun
- Shandong University of Traditional Chinese Medicine, Jinan, China
| | - Minmin Yu
- Affiliated Hospital of Shandong University of Traditional Chinese Medicine, Jinan, China
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Endoplasmic Reticulum Stress in Colonic Mucosa of Ulcerative Colitis Patients Is Mediated by PERK and IRE1 Pathway Activation. Mediators Inflamm 2022; 2022:6049500. [PMID: 35185383 PMCID: PMC8849912 DOI: 10.1155/2022/6049500] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/04/2021] [Accepted: 12/28/2021] [Indexed: 02/08/2023] Open
Abstract
Ulcerative colitis (UC) is characterized by a chronic overproduction of proinflammatory cytokines. During an acute phase, the endoplasmic reticulum (ER) is overloaded and the protein folding process is impaired, a condition named ER stress. This state induces a response (unfolded protein response (UPR)), initiated by the activation of IRE1/Xbp-1, PERK/eIF2α, and ATF6 pathways, which has previously been linked to intestinal inflammation in experimental models. ER stress and UPR activation trigger the activation of proinflammatory, autophagy, and apoptosis genes, in addition to promoting protein degradation. Therefore, the goal of this study was to evaluate the activation of ER stress and UPR in colonic mucosa of UC patients. Patient and Methods. Transcriptional analysis of ER stress- and UPR-related genes was performed by qPCR from intestinal mucosa of patients with UC. We also performed in situ hybridization (ISH) and immunohistochemistry (IHQ) of PERK/eIF2α and IRE1/Xbp-1 pathways and UPR-related chaperones. Results. We first evaluated inflammatory genes via qPCR, and we observed that all analyzed proinflammatory transcripts were upregulated in UC patients. ISH and IHQ images showed that ER stress is activated via PERK/eIF2α and IRE1/Xbp-1 pathways not only in intestinal epithelial cells but also in cells of the lamina propria of UC colonic mucosa. Transcriptional analysis confirmed that EIF2AK3 was upregulated in UC patients. UPR-related genes, such as ATF3, STC2, and DDIT3, along with the chaperones and cochaperones DNAJC3, CALR, HSP90B1, and HSPA5, were also upregulated in UC patients. In addition, we observed that proapoptotic and autophagy genes (Bax and ATG6L1, respectively) were also upregulated. Conclusion. Our results suggest that ER stress and UPR are indeed activated in UC patients and this may contribute to the chronic inflammatory process seen in UC. The increased apoptosis and autophagy markers further support the activation of these findings once they are activated to counterbalance tissue damage. These findings provide new insights into the molecular mechanisms that maintain UC activity and open new possibilities to attenuate intestinal inflammation.
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Srikanth L, Sarma PVGK. Andrographolide binds to spike glycoprotein and RNA-dependent RNA polymerase (NSP12) of SARS-CoV-2 by in silico approach: a probable molecule in the development of anti-coronaviral drug. J Genet Eng Biotechnol 2021; 19:101. [PMID: 34255214 PMCID: PMC8276218 DOI: 10.1186/s43141-021-00201-7] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/12/2021] [Accepted: 06/19/2021] [Indexed: 01/03/2023]
Abstract
The SARS-CoV-2 belongs to Coronaviridae family infects host cells by the interaction of its spike glycoprotein and angiotensin-converting enzyme 2 (ACE 2) of host cells. Upon entry, the virus uses its RNA dependent RNA polymerase (NSP12) for transcribing its genome to survive in the cell and spread its infection. The protein sequences of receptor-binding domain (RBD) of spike glycoprotein, and NSP12 exhibits high homology in the family of Coronoviridae and are ideal candidates for the development of anti-coronaviral drugs. In the quest to identify inhibitory molecules against these proteins, we searched several molecules that are present in naturally occurring medicinal plants database. Andrographolide which is largely present in the leaf extracts of Andrographis paniculata (AP) and is known to exhibit antiviral, antibacterial, and stabilizes Th1/Th2/Th17 responses; taking this clue, we used in silico approaches to see the binding of andrographolide to RBD and NSP12 molecules. Our docking results showed very strong affinity of andrographolide to RBD and NSP12 of the SARS-CoV-2 virus with dock scores of -10.3460 for RBD and -10.7313 for NSP12 indicating andrographolide acts as an inhibitor of RBD and NSP12. These unique properties of andrographolide, AP extract, can be tested as anti-coronaviral drug.
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Affiliation(s)
- Lokanathan Srikanth
- Department of Biotechnology, Sri Venkateswara Institute of Medical Sciences and University, Tirupati, Andhra Pradesh, 517507, India
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Zhang L, Ma X, Liu P, Ge W, Hu L, Zuo Z, Xiao H, Liao W. Treatment and mechanism of fecal microbiota transplantation in mice with experimentally induced ulcerative colitis. Exp Biol Med (Maywood) 2021; 246:1563-1575. [PMID: 33926254 DOI: 10.1177/15353702211006044] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023] Open
Abstract
Restoring intestinal microbiota dysbiosis with fecal microbiota transplantation is considered as a promising treatment for ulcerative colitis. However, the mechanisms underlying its relieving effects remain unclear. Ulcerative colitis pathogenesis is associated with the involvement of immune cells and inflammatory cytokines. Here, we aimed to investigate the effect of fecal microbiota transplantation on T cell cytokines in a dextran sulfate sodium-induced ulcerative colitis mouse model. Five-aminosalicylic acid (5-ASA) was used as the positive control. Male C57BL/6 mice were randomly assigned to control, model (UC), UC + FMT, and UC + 5-ASA groups. Each group consisted of five mice. The establishment of the mouse model was verified by fecal occult-blood screening and hematoxylin-eosin staining. Results showed that fecal microbiota transplantation reduced colonic inflammation, significantly decreased T helper (Th)1 and Th17 cells, interferon-gamma, interleukin-2 and interleukin-17, as well as significantly increased Th2 and regulatory T (Treg) cells, interleukin-4, interleukin-10, and transforming growth factor-beta, and improved routine blood count. Furthermore, 16S rRNA gene-sequencing analysis showed a significant increase in the relative abundance of genus Akkermansia and a significant decrease in the relative abundance of genus Helicobacter in the ulcerative colitis group. Fecal microbiota transplantation restored the profile of the intestinal microbiota to that of the control group. These findings demonstrated the capability of fecal microbiota transplantation in controlling experimentally induced ulcerative colitis by improving Th1/Th2 and Th17/Treg imbalance through the regulation of intestinal microbiota.
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Affiliation(s)
- Leichang Zhang
- Department of Anorectal, The Affiliated Hospital of Jiangxi University of Traditional Chinese Medicine, Nanchang 330006, P.R. China
| | - Xiaofei Ma
- Department of Anorectal, Department of Postgraduate Jiangxi University of Traditional Chinese Medicine, Nanchang 330004, P.R. China
| | - Peng Liu
- Department of Anorectal, Department of Postgraduate Jiangxi University of Traditional Chinese Medicine, Nanchang 330004, P.R. China
| | - Wei Ge
- Department of Anorectal, The Affiliated Hospital of Jiangxi University of Traditional Chinese Medicine, Nanchang 330006, P.R. China
| | - Lixia Hu
- Department of Traditional Chinese Medicine, Jiangxi University of Traditional Chinese Medicine, Nanchang 330004, P.R. China
| | - Zhengyun Zuo
- Formula-Pattern Research Center, Jiangxi University of Traditional Chinese Medicine, Nanchang 330004, P.R. China
| | - Huirong Xiao
- Department of Anorectal, The Affiliated Hospital of Jiangxi University of Traditional Chinese Medicine, Nanchang 330006, P.R. China
| | - Wu Liao
- Department of Anorectal, The Affiliated Hospital of Jiangxi University of Traditional Chinese Medicine, Nanchang 330006, P.R. China
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Mehta S, Sharma AK, Singh RK. Ethnobotany, Pharmacological activities and Bioavailability studies of "King of Bitter" (Kalmegh): A Review (2010-2020). Comb Chem High Throughput Screen 2021; 25:788-807. [PMID: 33745423 DOI: 10.2174/1386207324666210310140611] [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] [Received: 09/09/2020] [Revised: 01/26/2021] [Accepted: 02/08/2021] [Indexed: 11/22/2022]
Abstract
BACKGROUND Andrographis paniculata, commonly known as "Kalmegh", is an annual herbaceous plant from family Acanthaceae. The whole plant of A. paniculata has explored for multiple pharmacological activities and is scientifically recognized by in-vivo and in-vitro studies. Various biotechnologically engineered techniques have been explored to enhance the bioavailability of this plant. OBJECTIVE In this review, we aim to present comprehensive recent advances in the ethnopharmacology, phytochemistry, specific pharmacology, safety and toxicology and bioavailability of A. paniculata and its pure compounds. Possible directions for future research are also outlined in brief, which will encourage advance investigations on this plant. METHODS Information on the recent updates of the present review is collected from different electronic scientific databases such as Science Direct, PubMed, Scopus, and Google Scholar. All the composed information is classified into different sections according to the objective of the paper. RESULTS More than hundred research and review papers have been studied and incorporated in the present manuscript. After vast literature search of A. paniculata, we present a noteworthy report of various phytoconstituents present in plant, which are accountable for potential therapeutic properties of the plant. Forty-five of studied articles give general information about introduction, ethnobotany and traditional uses of the plant. Twenty-two papers enclosed information about the phytoconstituents present in different parts of A. paniculata and seventy-two papers briefly outlined the pharmacological activities like antioxidant, anti-dengue, anti-ulcerogenic, antifungal, some miscellaneous activities like activity against SARS-CoV-2, antidiarrhoeal. Nineteen studies highlighted the research work conducted by various researchers to increased bioavailability of A. paniculata and two studies reported the safety and toxicology of the plant. CONCLUSION This review incorporated the scientifically validated research work encompassing the ethnobotanical description of the subjected plant, phytochemical profile, various pharmacological activities, and recent approaches to enhance the bioavailability of active metabolites.
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Affiliation(s)
- Sharuti Mehta
- CT Institute of Pharmaceutical Sciences, Jalandhar, 144020, Punjab. India
| | - Anil Kumar Sharma
- AIMIL Pharmaceuticals India Limited, Ranjeet Nagar, 110008, New Delhi. India
| | - Rajesh Kumar Singh
- Department of Pharmaceutical Chemistry, Shivalik College of Pharmacy, Nangal, 140126, Punjab. India
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Burgos RA, Alarcón P, Quiroga J, Manosalva C, Hancke J. Andrographolide, an Anti-Inflammatory Multitarget Drug: All Roads Lead to Cellular Metabolism. Molecules 2020; 26:molecules26010005. [PMID: 33374961 PMCID: PMC7792620 DOI: 10.3390/molecules26010005] [Citation(s) in RCA: 65] [Impact Index Per Article: 16.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/03/2020] [Revised: 12/17/2020] [Accepted: 12/18/2020] [Indexed: 12/15/2022] Open
Abstract
Andrographolide is a labdane diterpene and the main active ingredient isolated from the herb Andrographis paniculata. Andrographolide possesses diverse biological effects including anti-inflammatory, antioxidant, and antineoplastic properties. Clinical studies have demonstrated that andrographolide could be useful in therapy for a wide range of diseases such as osteoarthritis, upper respiratory diseases, and multiple sclerosis. Several targets are described for andrographolide, including the interference of transcription factors NF-κB, AP-1, and HIF-1 and signaling pathways such as PI3K/Akt, MAPK, and JAK/STAT. In addition, an increase in the Nrf2 (nuclear factor erythroid 2–related factor 2) signaling pathway also supports its antioxidant and anti-inflammatory properties. However, this scenario could be more complex since recent evidence suggests that andrographolide targets can modulate glucose metabolism. The metabolic effect of andrographolide might be the key to explaining the diverse therapeutic effects described in preclinical and clinical studies. This review discusses some of the most recent evidence about the anti-inflammatory and metabolic effects of andrographolide.
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Affiliation(s)
- Rafael Agustín Burgos
- Laboratory of Inflammation Pharmacology, Faculty of Veterinary Sciences, Institute of Pharmacology and Morphophysiology, Universidad Austral de Chile, Valdivia 5090000, Chile; (P.A.); (J.Q.); (J.H.)
- Laboratory of Immunometabolism, Institute of Pharmacology and Morphophysiology, Faculty of Veterinary Sciences, Universidad Austral de Chile, Valdivia 5090000, Chile
- Correspondence: ; Tel.: +56-63-2293-015
| | - Pablo Alarcón
- Laboratory of Inflammation Pharmacology, Faculty of Veterinary Sciences, Institute of Pharmacology and Morphophysiology, Universidad Austral de Chile, Valdivia 5090000, Chile; (P.A.); (J.Q.); (J.H.)
- Laboratory of Immunometabolism, Institute of Pharmacology and Morphophysiology, Faculty of Veterinary Sciences, Universidad Austral de Chile, Valdivia 5090000, Chile
| | - John Quiroga
- Laboratory of Inflammation Pharmacology, Faculty of Veterinary Sciences, Institute of Pharmacology and Morphophysiology, Universidad Austral de Chile, Valdivia 5090000, Chile; (P.A.); (J.Q.); (J.H.)
- Laboratory of Immunometabolism, Institute of Pharmacology and Morphophysiology, Faculty of Veterinary Sciences, Universidad Austral de Chile, Valdivia 5090000, Chile
- PhD Program in Veterinary Sciences, Faculty of Veterinary Sciences, Universidad Austral de Chile, Valdivia 5090000, Chile
| | - Carolina Manosalva
- Faculty of Sciences, Institute of Pharmacy, Universidad Austral de Chile, Valdivia 5090000, Chile;
| | - Juan Hancke
- Laboratory of Inflammation Pharmacology, Faculty of Veterinary Sciences, Institute of Pharmacology and Morphophysiology, Universidad Austral de Chile, Valdivia 5090000, Chile; (P.A.); (J.Q.); (J.H.)
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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.
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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
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Zhang L, Cao N, Wang Y, Wang Y, Wu C, Cheng X, Wang C. Improvement of Oxazolone-Induced Ulcerative Colitis in Rats Using Andrographolide. Molecules 2019; 25:molecules25010076. [PMID: 31878303 PMCID: PMC6982790 DOI: 10.3390/molecules25010076] [Citation(s) in RCA: 23] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/20/2019] [Revised: 12/14/2019] [Accepted: 12/21/2019] [Indexed: 12/18/2022] Open
Abstract
Ulcerative colitis (UC) is usually accompanied with symptoms of abdominal pain, diarrhea, and bloody stool, which impair the quality of life of patients. Previous studies have shown that Andrographis paniculata extracts, which have andrographolide (AND) as their main compound, can relieve UC symptoms in patients. The aim of the study was to investigate the alleviating effect of AND on UC using the oxazolone (OXZ)-induced UC rat model. A total of 66 healthy male Sprague Dawley rats were used to evaluate the efficacy and mechanism of AND on UC (n = 11 per group) and grouped into control, model, SASP (sulfasalazine, positive control group, 500 mg/kg), AND-L (40 mg/kg), AND-M (80 mg/kg), and AND-H (120 mg/kg). The colonic disease activity index (DAI), colon length, spleen coefficient, pathological damage, and inflammation-related cytokine and protein expression levels were used as indices for evaluation. Results showed that the AND groups had reduced DAI and mortality, and significantly improved colon length and spleen coefficient compared with the model group. Furthermore, OXZ-induced histological injury was relieved significantly after AND treatment due to an improved crypt structure and reduced infiltration of inflammatory cells. Moreover, AND inhibited myeloperoxidase (MPO) activity and the secretion of interleukin-4 (IL-4), IL-13, and tumor necrosis factor α (TNF-α). The results of the anti-inflammatory mechanism revealed that AND blocked the signal transduction by reducing IL-4/IL-13 specific binding to IL-4 receptor (IL-4R) and inhibiting the phosphorylation of the signal transducer and activator of transcription 6 (p-STAT6). In conclusion, aside from natural plants, AND may be a candidate ingredient for UC therapy.
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Affiliation(s)
| | | | | | | | | | | | - Changhong Wang
- Correspondence: or ; Tel.: +86-21-51322511; Fax: +86-21-51322519
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