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Chatterjee A, Jayaprakasan M, Chakrabarty AK, Lakkaniga NR, Bhatt BN, Banerjee D, Narwaria A, Katiyar CK, Dubey SK. Comprehensive insights into rheumatoid arthritis: Pathophysiology, current therapies and herbal alternatives for effective disease management. Phytother Res 2024; 38:2764-2799. [PMID: 38522945 DOI: 10.1002/ptr.8187] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/01/2023] [Revised: 02/14/2024] [Accepted: 03/01/2024] [Indexed: 03/26/2024]
Abstract
Rheumatoid arthritis is a chronic autoimmune inflammatory disease characterized by immune response overexpression, causing pain and swelling in the synovial joints. This condition is caused by auto-reactive antibodies that attack self-antigens due to their incapacity to distinguish between self and foreign molecules. Dysregulated activity within numerous signalling and immunological pathways supports the disease's development and progression, elevating its complexity. While current treatments provide some alleviation, their effectiveness is accompanied by a variety of adverse effects that are inherent in conventional medications. As a result, there is a deep-rooted necessity to investigate alternate therapeutic strategies capable of neutralizing these disadvantages. Medicinal herbs display a variety of potent bioactive phytochemicals that are effective in the complementary management of disease, thus generating an enormous potency for the researchers to delve deep into the development of novel phytomedicine against autoimmune diseases, although additional evidence and understanding are required in terms of their efficacy and pharmacodynamic mechanisms. This literature-based review highlights the dysregulation of immune tolerance in rheumatoid arthritis, analyses the pathophysiology, elucidates relevant signalling pathways involved, evaluates present and future therapy options and underscores the therapeutic attributes of a diverse array of medicinal herbs in addressing this severe disease.
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Affiliation(s)
- Amrita Chatterjee
- Department of Chemistry and Chemical Biology, Indian Institute of Technology (Indian School of Mines), Dhanbad, India
| | - Monisha Jayaprakasan
- Department of Chemistry and Chemical Biology, Indian Institute of Technology (Indian School of Mines), Dhanbad, India
| | | | - Naga Rajiv Lakkaniga
- Department of Chemistry and Chemical Biology, Indian Institute of Technology (Indian School of Mines), Dhanbad, India
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2
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Zhou Z, Li Y, Wu S, Liu T, Jiang J. Host-microbiota interactions in collagen-induced arthritis rats treated with human umbilical cord mesenchymal stem cell exosome and ginsenoside Rh2. Biomed Pharmacother 2024; 174:116515. [PMID: 38569276 DOI: 10.1016/j.biopha.2024.116515] [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: 01/21/2024] [Revised: 03/19/2024] [Accepted: 03/28/2024] [Indexed: 04/05/2024] Open
Abstract
Mesenchymal stem cell exosome (MSCs-exo) is a class of products secreted by mesenchymal stem cells (MSCs) that contain various biologically active substances. MSCs-exo is a promising alternative to MSCs due to their lower immunogenicity and lack of ethical constraints. Ginsenoside Rh2 (Rh2) is a hydrolyzed component of the primary active substance of ginsenosides. Rh2 has a variety of pharmacological functions, including anti-inflammatory, anti-tumor, and antioxidant. Studies have demonstrated that gut microbiota and metabolites are critical in developing rheumatoid arthritis (RA). In this study, we constructed a collagen-induced arthritis (CIA) model in rats. We used MSCs-exo combined with Rh2 to treat CIA rats. To observe the effect of MSCs-exo combined with Rh2 on joint inflammation, rat feces were collected for 16 rRNA amplicon sequencing and untargeted metabolomics analysis. The results showed that the arthritis index score and joint swelling of CIA rats treated with MSCs-exo in combination with Rh2 were significantly lower than those of the model and MSCs-exo alone groups. MSCs-exo and Rh2 significantly ameliorated the disturbed gut microbiota in CIA rats. The regulation of Candidatus_Saccharibacteria and Clostridium_XlVb regulation may be the most critical. Rh2 enhanced the therapeutic effect of MSCs-exo compared with the MSCs-exo -alone group. Furthermore, significant changes in gut metabolites were observed in the CIA rat group, and these differentially altered metabolites may act as messengers for host-microbiota interactions. These differential metabolites were enriched into relevant critical metabolic pathways, revealing possible pathways for host-microbiota interactions.
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Affiliation(s)
- Zhongsheng Zhou
- Scientific Research Center, China-Japan Union Hospital of Jilin University, Changchun, China
| | - Yang Li
- Scientific Research Center, China-Japan Union Hospital of Jilin University, Changchun, China
| | - Shuhui Wu
- Scientific Research Center, China-Japan Union Hospital of Jilin University, Changchun, China
| | - Te Liu
- Scientific Research Center, China-Japan Union Hospital of Jilin University, Changchun, China; Yibin Jilin University Research Institute, Jilin University, Yibin, Sichuan, China.
| | - Jinlan Jiang
- Scientific Research Center, China-Japan Union Hospital of Jilin University, Changchun, China.
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Hussain MS, Gupta G, Goyal A, Thapa R, Almalki WH, Kazmi I, Alzarea SI, Fuloria S, Meenakshi DU, Jakhmola V, Pandey M, Singh SK, Dua K. From nature to therapy: Luteolin's potential as an immune system modulator in inflammatory disorders. J Biochem Mol Toxicol 2023; 37:e23482. [PMID: 37530602 DOI: 10.1002/jbt.23482] [Citation(s) in RCA: 29] [Impact Index Per Article: 29.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/27/2023] [Revised: 07/05/2023] [Accepted: 07/20/2023] [Indexed: 08/03/2023]
Abstract
Inflammation is an essential immune response that helps fight infections and heal tissues. However, chronic inflammation has been linked to several diseases, including cancer, autoimmune disorders, cardiovascular diseases, and neurological disorders. This has increased interest in finding natural substances that can modulate the immune system inflammatory signaling pathways to prevent or treat these diseases. Luteolin is a flavonoid found in many fruits, vegetables, and herbs. It has been shown to have anti-inflammatory effects by altering signaling pathways in immune cells. This review article discusses the current research on luteolin's role as a natural immune system modulator of inflammatory signaling mechanisms, such as its effects on nuclear factor-kappa B, mitogen-activated protein kinases, Janus kinase/signal transducer and activator of transcription, and inflammasome signaling processes. The safety profile of luteolin and its potential therapeutic uses in conditions linked to inflammation are also discussed. Overall, the data point to Luteolin's intriguing potential as a natural regulator of immune system inflammatory signaling processes. More research is needed to fully understand its mechanisms of action and possible therapeutic applications.
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Affiliation(s)
- Md Sadique Hussain
- School of Pharmaceutical Sciences, Jaipur National University, Jaipur, Rajasthan, India
| | - Gaurav Gupta
- School of Pharmacy, Suresh Gyan Vihar University, Jaipur, India
- Center for Global Health research (CGHR), Saveetha Institute of Medical and Technical Sciences (SIMATS), Saveetha University, Chennai, India
| | - Ahsas Goyal
- Institute of Pharmaceutical Research, GLA University, Mathura, Uttar Pradesh, India
| | - Riya Thapa
- School of Pharmacy, Suresh Gyan Vihar University, Jaipur, India
| | | | - Imran Kazmi
- Department of Biochemistry, Faculty of Science, King Abdulaziz University, Jeddah, Saudi Arabia
| | - Sami I Alzarea
- Department of Pharmacology, College of Pharmacy, Jouf University, Sakaka, Al-Jouf, Saudi Arabia
| | | | | | - Vikas Jakhmola
- Uttaranchal Institute of Pharmaceutical Sciences, Uttaranchal University, Dehradun, India
| | - Manisha Pandey
- Department of Pharmaceutical Sciences, Central University of Haryana, Mahendergarh, India
| | - Sachin Kumar Singh
- School of Pharmaceutical Sciences, Lovely Professional University, Phagwara, Punjab, India
- Faculty of Health, Australian Research Centre in Complementary and Integrative Medicine, University of Technology Sydney, Ultimo, Australia
| | - Kamal Dua
- Faculty of Health, Australian Research Centre in Complementary and Integrative Medicine, University of Technology Sydney, Ultimo, Australia
- Discipline of Pharmacy, Graduate School of Health, University of Technology Sydney, Sydney, New South Wales, Australia
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Yang J, Yang B, Shi J. A Nanomedicine-Enabled Ion-Exchange Strategy for Enhancing Curcumin-Based Rheumatoid Arthritis Therapy. Angew Chem Int Ed Engl 2023; 62:e202310061. [PMID: 37707122 DOI: 10.1002/anie.202310061] [Citation(s) in RCA: 8] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/14/2023] [Revised: 09/13/2023] [Accepted: 09/14/2023] [Indexed: 09/15/2023]
Abstract
Curcumin (Cur) has been clinically used for rheumatoid arthritis treatment by the means of reactive oxygen species (ROS) scavenging and immune microenvironment regulation. However, this compound has a poor water solubility and moderate antioxidative activity, favoring no further broadened application. Metal complexes of curcumin such as zinc-curcumin (Zn-Cur) features enhanced water solubilities, while copper-curcumin (Cu-Cur) shows a higher antioxidant activity but lower solubility than Zn-Cur. Based on their inherent biological properties, this work proposes a nanomedicine-based ion-exchange strategy to enhance the efficacy of Cur for rheumatoid arthritis treatment. Copper silicate nanoparticles with hollow mesoporous structure were prepared to load water-soluble Zn-Cur for constructing a composite nanomedicine, which can degrade in acidic microenvironment of arthritic region, releasing Cu2+ and Zn-Cur. Cu2+ then substitute for Zn2+ in Zn-Cur to form Cu-Cur with a significantly enhanced antioxidative effect, capable of efficiently scavenging ROS in M1 macrophages, promoting their transition to an anti-inflammatory M2 phenotype. In addition, the silicate released after nanocarrier degradation and the Zn2+ released after ion exchange reaction synergistically promote the biomineralization of osteoblasts. This work provides a new approach for enhancing the antiarthritic effect of Cur via an ion-exchange strategy.
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Affiliation(s)
- Jiacai Yang
- Shanghai Institute of Ceramics, Chinese Academy of Sciences, Research Unit of Nanocatalytic Medicine in Specific Therapy for Serious Disease, Chinese Academy of Medical Sciences (2021RU012), Shanghai, 200050, P. R. China
- Center of Materials Science and Optoelectronics Engineering, University of Chinese Academy of Sciences, Beijing, 100049, P. R. China
| | - Bowen Yang
- Shanghai Institute of Ceramics, Chinese Academy of Sciences, Research Unit of Nanocatalytic Medicine in Specific Therapy for Serious Disease, Chinese Academy of Medical Sciences (2021RU012), Shanghai, 200050, P. R. China
| | - Jianlin Shi
- Shanghai Institute of Ceramics, Chinese Academy of Sciences, Research Unit of Nanocatalytic Medicine in Specific Therapy for Serious Disease, Chinese Academy of Medical Sciences (2021RU012), Shanghai, 200050, P. R. China
- Tenth People's Hospital and School of Medicine, Tongji University, Shanghai, 200092, P. R. China
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Hemshekhar M, Lloyd D, El-Gabalawy H, Mookherjee N. A bioavailable form of curcumin suppresses cationic host defence peptides cathelicidin and calprotectin in a murine model of collagen-induced arthritis. Arthritis Res Ther 2023; 25:161. [PMID: 37667385 PMCID: PMC10476367 DOI: 10.1186/s13075-023-03148-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/10/2023] [Accepted: 08/24/2023] [Indexed: 09/06/2023] Open
Abstract
Curcumin, a component of the South-Asian spice turmeric, elicits anti-inflammatory functions. We have previously demonstrated that a highly bioavailable formulation of cucurmin, Cureit/Acumin™ (CUR), can suppress disease onset and severity, in a collagen-induced arthritis (CIA) mouse model. In a previous study, we have also shown that the abundance of antimicrobial host defence peptides, specifically cathelicidin (CRAMP) and calprotectin (S100A8 and S100A9), is significantly increased in the joint tissues of CIA mice. Elevated levels of cathelicidin and calprotectin have been associated with the pathogenesis of rheumatoid arthritis. Therefore, in this study, we examined the effect CUR administration on the abundance of cathelicidin and calprotectin in the joints, in a CIA mouse model. Here, we demonstrate that daily oral administration of CUR significantly reduces the elevated levels of CRAMP and calprotectin to baseline in the joints of CIA mice. We also show a linear correlation between the abundance of these peptides in the joints with serum inflammatory cytokines TNFα, IFNγ, and MCP-1. Overall, our results suggest that oral administration of a bioavailable CUR can suppress cathelicidin and calprotectin in the joints and regulate both local (joints) and systemic (serum) inflammation, in inflammatory arthritis.
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Affiliation(s)
- Mahadevappa Hemshekhar
- Manitoba Centre for Proteomics and Systems Biology, Department of Internal Medicine, University of Manitoba, 799 John Buhler Research Centre, 715 McDermot Ave, Winnipeg, MB, R3E3P4, Canada
| | - Dylan Lloyd
- Manitoba Centre for Proteomics and Systems Biology, Department of Internal Medicine, University of Manitoba, 799 John Buhler Research Centre, 715 McDermot Ave, Winnipeg, MB, R3E3P4, Canada
| | - Hani El-Gabalawy
- Manitoba Centre for Proteomics and Systems Biology, Department of Internal Medicine, University of Manitoba, 799 John Buhler Research Centre, 715 McDermot Ave, Winnipeg, MB, R3E3P4, Canada
- Division of Rheumatology, Department of Internal Medicine, University of Manitoba, Winnipeg, MB, Canada
| | - Neeloffer Mookherjee
- Manitoba Centre for Proteomics and Systems Biology, Department of Internal Medicine, University of Manitoba, 799 John Buhler Research Centre, 715 McDermot Ave, Winnipeg, MB, R3E3P4, Canada.
- Department of Immunology, University of Manitoba, Winnipeg, MB, Canada.
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Guo C, Diao N, Zhang D, Cao M, Wang W, Geng H, Kong M, Chen D. Achyranthes polysaccharide based dual-responsive nano-delivery system for treatment of rheumatoid arthritis. Int J Biol Macromol 2023; 234:123677. [PMID: 36796562 DOI: 10.1016/j.ijbiomac.2023.123677] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/22/2022] [Revised: 02/04/2023] [Accepted: 02/10/2023] [Indexed: 02/16/2023]
Abstract
Achyranthes plays the role of dredging the meridians and clearing the joints with a certain anti-inflammatory effect, peripheral analgesic activity and central analgesic activity. A novel self-assembled nanoparticles containing Celastrol (Cel) with matrix metalloproteinase (MMP)-sensitive chemotherapy-sonodynamic therapy was fabricated targeting macrophages at the inflammatory site of rheumatoid arthritis. Dextran sulfate (DS) with highly expressed SR-A receptor on the surface of macrophages is used to specifically target the site of inflammation; by introducing PVGLIG enzyme-sensitive polypeptides and ROS-responsive bonds, it can achieve the desired effect on MMP-2/9 and reactive oxygen species at the joint site. The preparation forms DS-PVGLIG-Cel&Abps-thioketal-Cur@Cel nanomicelles, referred to as D&A@Cel. The resulting micelles had an average size of 204.8 nm and the zeta potential -16.46 mV. The results show that activated macrophages can effectively capture Cel in in vivo experiments, indicating that Cel delivered by nanoparticles can significantly improve bioavailability.
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Affiliation(s)
- Chunjing Guo
- College of Marine Life Science, Ocean University of China, Qingdao 266003, PR China
| | - Ningning Diao
- School of Pharmacy, Yantai University, Yantai 264005, PR China
| | - Dandan Zhang
- School of Pharmacy, Yantai University, Yantai 264005, PR China
| | - Min Cao
- School of Pharmacy, Yantai University, Yantai 264005, PR China
| | - Wenxin Wang
- School of Pharmacy, Yantai University, Yantai 264005, PR China
| | - Hongxu Geng
- School of Pharmacy, Yantai University, Yantai 264005, PR China
| | - Ming Kong
- College of Marine Life Science, Ocean University of China, Qingdao 266003, PR China.
| | - Daquan Chen
- School of Pharmacy, Yantai University, Yantai 264005, PR China.
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Suha AJ, Sadr SS, Roghani M, Haftcheshmeh SM, Khamse S, Momtazi-Borojeni AA. Ferulic Acid Attenuates Kainate-induced Neurodegeneration in a Rat Poststatus Epilepticus Model. Curr Mol Pharmacol 2023; 16:178-187. [PMID: 35232370 DOI: 10.2174/1874467215666220225093737] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/16/2021] [Revised: 11/30/2021] [Accepted: 12/16/2021] [Indexed: 11/22/2022]
Abstract
BACKGROUND AND AIMS Increasing research evidence indicates that temporal lobe epilepsy (TLE) induced by kainic acid (KA) has high pathological similarities with human TLE. KA induces excitotoxicity (especially in the acute phase of the disease), which leads to neurodegeneration and epileptogenesis through oxidative stress and inflammation. Ferulic acid (FA) is one of the well-known phytochemical compounds that have shown potential antioxidant and anti-inflammatory properties and promise in treating several diseases. The current study set out to investigate the neuroprotective effects of FA in a rat model of TLE. METHODS Thirty-six male Wistar rats were divided into four groups. Pretreatment with FA (100 mg/kg/day p.o.) started one week before the intrahippocampal injection of KA (0.8 μg/μl, 5μl). Seizures were recorded and evaluated according to Racine's scale. Oxidative stress was assessed by measuring its indicators, including malondialdehyde (MDA), nitrite, and catalase. Histopathological evaluations including Nissl staining and immunohistochemical staining of cyclooxygenase-2 (COX-2), and neural nitric oxide synthases (nNOS) were performed for the CA3 region of the hippocampus. RESULTS Pretreatment with FA significantly attenuates the severity of the seizure and prevents neuronal loss in the CA3 region of the hippocampus in rats with KA-induced post-status epilepticus. Also, nitrite concentration and nNOS levels were markedly diminished in FA-pretreated animals compared to non-pretreated epileptic rats. CONCLUSION Our findings indicated that neuroprotective properties of FA, therefore, could be considered a valuable therapeutic supplement in treating TLE.
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Affiliation(s)
- Ali Jaafari Suha
- Department of Physiology, School of Medicine, Tehran University of Medical Sciences, Tehran, Iran
- Electrophysiology Research Center, Neuroscience Institute, Tehran University of Medical Sciences, Tehran, Iran
| | - Seyed Shahabeddin Sadr
- Department of Physiology, School of Medicine, Tehran University of Medical Sciences, Tehran, Iran
- Electrophysiology Research Center, Neuroscience Institute, Tehran University of Medical Sciences, Tehran, Iran
| | - Mehrdad Roghani
- Neurophysiology Research Center, Shahed University, Tehran, Iran
| | - Saeed Mohammadian Haftcheshmeh
- Department of Basic Medical Sciences, Neyshabur University of Medical Sciences, Neyshabur, Iran
- Healthy Ageing Research Centre, Neyshabur University of Medical Sciences, Neyshabur, Iran
| | - Safoura Khamse
- Department of Physiology, School of Medicine, Tehran University of Medical Sciences, Tehran, Iran
- Electrophysiology Research Center, Neuroscience Institute, Tehran University of Medical Sciences, Tehran, Iran
| | - Amir Abbas Momtazi-Borojeni
- Department of Medical Biotechnology, Faculty of Medicine, Mashhad University of Medical Sciences, Mashhad, Iran
- Iran's National Elites Foundation, Tehran, Iran
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8
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Therapeutic potency of curcumin for allergic diseases: A focus on immunomodulatory actions. Biomed Pharmacother 2022; 154:113646. [PMID: 36063645 DOI: 10.1016/j.biopha.2022.113646] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2022] [Revised: 08/30/2022] [Accepted: 09/01/2022] [Indexed: 11/23/2022] Open
Abstract
In light of increasing research evidence on the molecular mechanisms of allergic diseases, the crucial roles of innate and acquired immunity in the disease's pathogenesis have been well highlighted. In this respect, much attention has been paid to the modulation of unregulated and unabated inflammatory responses aiming to suppress pathologic immune responses in treating allergic diseases. One of the most important natural compounds with a high potency of immune modulation is curcumin, an active polyphenol compound derived from turmeric, Curcuma longa L. Curcumin's immunomodulatory action mainly arises from its interactions with an extensive collection of immune cells such as mast cells, eosinophils, epithelial cells, basophils, neutrophils, and lymphocytes. Up to now, there has been no detailed investigation of curcumin's immunomodulatory actions in allergic diseases. So, the present review study aims to prepare an overview of the immunomodulatory effects of curcumin on the pathologic innate immune responses and dysregulated functions of T helper (TH) subtypes, including TH1, TH2, TH17, and regulator T cells (Tregs) by gathering evidence from several studies of In-vitro and In-vivo. As the second aim of the present review, we also discuss some novel strategies to overcome the limitation of curcumin in clinical use. Finally, this review also assesses the therapeutic potential of curcumin regarding its immunomodulatory actions in allergic diseases.
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Rashidi M, Mahmoudian E, Mirzaei S, Mazloomi SN, Bazi A, Azadeh H, Mozaffari M. Harmaline downregulates angiogenesis markers and suppresses the growth of 4T1 breast cancer cells in vivo and in vitro. Chem Biol Interact 2022; 365:110087. [PMID: 35963316 DOI: 10.1016/j.cbi.2022.110087] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/10/2022] [Revised: 07/24/2022] [Accepted: 07/30/2022] [Indexed: 11/29/2022]
Abstract
The anti-angiogenic effects of harmaline, an alkaloid with emerging anti-tumor properties, are under investigation. In the present study, the effects of different doses of harmaline, either alone or in combination with doxorubicin (DOX), were assessed in mice models of breast tumor. Breast tumors were created by the subcutaneous injection of 4T1 cells into Balb/c mice. The mice received either normal saline, harmaline alone (10, 20, or 30 mg/kg), or harmaline (20 mg/kg) + DOX (10 mg/kg). Immunohistochemistry, ELISA, and real-time PCR were conducted to measure target parameters. Harmaline significantly increased tumor cells' sensitivity to DOX as confirmed by a significantly reduced tumor volume in the harmaline + DOX group after 24 days (P < 0.05). Also, the levels of Ki-67 (P < 0.001), MMP-2 (P < 0.001), and VEGF (P < 0.001) significantly decreased while the level of E-cadherin increased (P < 0.001) in the tumor tissues of the mice treated with 20 or 30 mg/kg harmaline or harmaline (20 mg/kg) + DOX (10 mg/kg) compared to the control group. There was a significant reduction in the serum level of IL-4 in tumor-bearing mice treated with harmaline (P < 0.05), and IFN-γ serum level was significantly augmented in all experimental groups compared to the control group (P < 0.05). The genes encoding VEGF, VEGF receptor 2, CD105, and COX2 were significantly down-regulated (P < 0.05 for all) in harmaline-treated (either alone or in combination with DOX) mice. In conclusion, harmaline seems to have the potential to be used as an anticancer agent for treating breast cancer.
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Affiliation(s)
- Mohsen Rashidi
- Department Pharmacology, Faculty of Medicine, Mazandaran University of Medical Sciences, Sari, Iran; The Health of Plant and Livestock Products Research Center,Mazandaran University of Medical Sciences, Sari, Iran.
| | - Elham Mahmoudian
- Cellular & Molecular Medicine Department, Faculty of Medicine, University of Ottawa, 451 ch. Smyth Rd., Roger Guindon Hall, Ottawa, ON, K1H 8M5, Canada
| | - Sepideh Mirzaei
- Department of Biology, Faculty of Science, Islamic Azad University, Science and Research Branch, Tehran, Iran
| | - Seyadeh Narges Mazloomi
- The Health of Plant and LivestockProducts Research Center, Mazandaran University of Medical Sciences, Sari, Iran; Food and Drug Administration, Mazandaran University of Medical Sciences, Sari, Iran
| | - Ali Bazi
- Department of Hematology, Faculty of Allied Medical Sciences, Zabol University of Medical Sciences, Zabol, Iran
| | - Hossein Azadeh
- Department of Internal Medicine, Rheumatology Division, Orthopedic Research Center, Mazandaran University of Medical Sciences, Sari, Iran.
| | - Mobina Mozaffari
- Student Research Committee, Mazandaran University of Medical Sciences, Sari, Iran
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10
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Razali NSC, Lam KW, Rajab NF, A Jamal AR, Kamaluddin NF, Chan KM. Curcumin piperidone derivatives induce anti-proliferative and anti-migratory effects in LN-18 human glioblastoma cells. Sci Rep 2022; 12:13131. [PMID: 35907913 PMCID: PMC9338982 DOI: 10.1038/s41598-022-16274-4] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/07/2022] [Accepted: 07/07/2022] [Indexed: 12/15/2022] Open
Abstract
Curcumin has demonstrated potential cytotoxicity across various cell lines despite its poor bioavailability and rapid metabolism. Therefore, our group have synthesized curcuminoid analogues with piperidone derivatives, FLDP-5 and FLDP-8 to overcome these limitations. In this study, the analogues were assessed on LN-18 human glioblastoma cells in comparison to curcumin. Results from cytotoxicity assessment showed that FLDP-5 and FLDP-8 curcuminoid analogues caused death in LN-18 cells in a concentration-dependent manner after 24-h treatment with much lower IC50 values of 2.5 µM and 4 µM respectively, which were more potent compared to curcumin with IC50 of 31 µM. Moreover, a significant increase (p < 0.05) in the level of superoxide anion and hydrogen peroxide upon 2-h and 6-h treatment confirmed the oxidative stress involvement in the cell death process induced by these analogues. These analogues also showed potent anti-migratory effects through inhibition of LN-18 cells’ migration and invasion. In addition, cell cycle analysis showed that these analogues are capable of inducing significant (p < 0.05) S-phase cell cycle arrest during the 24-h treatment as compared to untreated, which explained the reduced proliferation indicated by MTT assay. In conclusion, these curcuminoid analogues exhibit potent anti-cancer effects with anti-proliferative and anti-migratory properties towards LN-18 cells as compared to curcumin.
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Affiliation(s)
- Nur Syahirah Che Razali
- Center for Toxicology and Health Risk Studies, Faculty of Health Sciences, Universiti Kebangsaan Malaysia, 50300, Kuala Lumpur, Malaysia
| | - Kok Wai Lam
- Center for Drug and Herbal Development, Faculty of Pharmacy, Universiti Kebangsaan Malaysia, 50300, Kuala Lumpur, Malaysia
| | - Nor Fadilah Rajab
- Center for Healthy Ageing and Wellness, Faculty of Health Sciences, Universiti Kebangsaan Malaysia, 50300, Kuala Lumpur, Malaysia
| | - A Rahman A Jamal
- UKM Medical Molecular Biology Institute, UKM Medical Centre, 56000, Cheras, Malaysia
| | - Nurul Farahana Kamaluddin
- Center for Toxicology and Health Risk Studies, Faculty of Health Sciences, Universiti Kebangsaan Malaysia, 50300, Kuala Lumpur, Malaysia
| | - Kok Meng Chan
- Center for Toxicology and Health Risk Studies, Faculty of Health Sciences, Universiti Kebangsaan Malaysia, 50300, Kuala Lumpur, Malaysia. .,Institute for Environmental and Development, UKM, 43600, Bangi, Selangor, Malaysia.
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11
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Mandal AK, Sahoo A, Dwivedi K, Singh R, Kumar V. Potential therapeutic application of biophenols - plants secondary metabolites in rheumatoid arthritis. Crit Rev Food Sci Nutr 2022; 63:8900-8918. [PMID: 35593234 DOI: 10.1080/10408398.2022.2062700] [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: 11/03/2022]
Abstract
Rheumatoid arthritis (RA) is a chronic autoimmune disease showed that persistent inflammation in the joints, induces the cartilage destruction, bone erosion, and leukocyte infiltration in the synovium. RA mostly affects the joints of hands, feet, wrists, ankles, and knees. Each year, approximately 20-40 new cases are reported per lac population and the disease affects women more than men. The etiology of RA is still unknown, but many pathways have been identified as potential targets in its pathophysiology, including the PI3K/AKT signaling pathway, NF-κB signaling, Adenosine signaling, Wnt, SYK/BTK, and mTOR signaling pathways. Biophenol, plant secondary metabolite, is considered one of the most abundantly phytoconstituents to have potential anti-inflammatory effects associated with multiple pathways. These indicate that biophenols can be used for its protective effect on the development and symptoms of RA. The current review explores and discusses the role of different biophenols in the treatment of RA disease.
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Affiliation(s)
| | - Ankit Sahoo
- Natural Product Drug Discovery Laboratory, Department of Pharmaceutical Science, Shalom Institute of Health and Allied Sciences, Sam Higginbottom University of Agriculture, Technology and Sciences, Prayagraj, Uttar Pradesh, India
| | - Khusbu Dwivedi
- Department of Pharmaceutics, Shambhunath Institute of Pharmacy, Prayagraj, Uttar Pradesh, India
| | - Richa Singh
- Natural Product Drug Discovery Laboratory, Department of Pharmaceutical Science, Shalom Institute of Health and Allied Sciences, Sam Higginbottom University of Agriculture, Technology and Sciences, Prayagraj, Uttar Pradesh, India
| | - Vikas Kumar
- Natural Product Drug Discovery Laboratory, Department of Pharmaceutical Science, Shalom Institute of Health and Allied Sciences, Sam Higginbottom University of Agriculture, Technology and Sciences, Prayagraj, Uttar Pradesh, India
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Mohammadi A, Khanbabaei H, Zandi F, Ahmadi A, Haftcheshmeh SM, Johnston TP, Sahebkar A. Curcumin: A therapeutic strategy for targeting the Helicobacter pylori-related diseases. Microb Pathog 2022; 166:105552. [DOI: 10.1016/j.micpath.2022.105552] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/22/2021] [Revised: 04/16/2022] [Accepted: 04/19/2022] [Indexed: 12/12/2022]
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Haftcheshmeh SM, Abedi M, Mashayekhi K, Mousavi MJ, Navashenaq JG, Mohammadi A, Momtazi-Borojeni AA. Berberine as a natural modulator of inflammatory signaling pathways in the immune system: Focus on NF-κB, JAK/STAT, and MAPK signaling pathways. Phytother Res 2022; 36:1216-1230. [PMID: 35142403 DOI: 10.1002/ptr.7407] [Citation(s) in RCA: 29] [Impact Index Per Article: 14.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/20/2021] [Revised: 01/16/2022] [Accepted: 01/26/2022] [Indexed: 12/14/2022]
Abstract
Three main inflammatory signaling pathways include nuclear factor-κB (NF-κB), Janus kinases/Signal transducer and activator of transcriptions (JAKs/STATs), and mitogen-activated protein kinases (MAPKs) play crucial roles in inducing, promoting, and regulating inflammatory responses in the immune system. Importantly, the breakdown of mechanisms that tightly regulate inflammatory signaling pathways can be the underlying cause of uncontrolled inflammatory responses and be associated with the generation and development of several inflammatory diseases. Hence, therapeutic strategies targeting inflammatory signaling pathways and their downstream components may promise to treat inflammatory diseases. Studies over the past two decades have provided important information on the polytrophic pharmacological and biochemical properties of berberine (BBR) as a naturally occurring compound, such as antioxidant, antitumor, antimicrobial, and antiinflammatory activates. Interestingly, the modulatory effects of BBR on inflammatory signaling cascades, which lead to the inhibition of inflammation, have been widely investigated in several in vitro and in vivo studies. For the first time, herein, this comprehensive review attempts to put together these studies and provide important insight into the modulatory effects of BBR on NF-κB, JAKs/STATs, and MAPKs signaling pathways in vitro in various types of immune cells and in vivo in several experimental inflammatory diseases. As the second achievement of this review, we also explore the therapeutic efficacy and antiinflammatory effects of BBR regarding its modulatory action.
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Affiliation(s)
- Saeed Mohammadian Haftcheshmeh
- Department of Basic Medical Sciences, Neyshabur University of Medical Sciences, Neyshabur, Iran.,Healthy Ageing Research Centre, Neyshabur University of Medical Sciences, Neyshabur, Iran
| | - Maliheh Abedi
- Center for Reference and Research on Rabies, Pasteur Institute of Iran, Tehran, Iran
| | - Kazem Mashayekhi
- Immunology of Infectious Diseases Research Center, Research Institute of Basic Medical Sciences, Rafsanjan University of Medical Sciences, Rafsanjan, Iran
| | - Mohammad Javad Mousavi
- Department of Immunology and Allergy, Faculty of Medicine, Bushehr University of Medical Sciences, Bushehr, Iran
| | | | - Asadollah Mohammadi
- Cellular and Molecular Research Center, Research Institute for Health Development, Kurdistan University of Medical Sciences, Sanandaj, Iran
| | - Amir Abbas Momtazi-Borojeni
- Department of Medical Biotechnology, School of Medicine, Mashhad University of Medical Sciences, Mashhad, Iran
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Curcumin Protects against Renal Ischemia/Reperfusion Injury by Regulating Oxidative Stress and Inflammatory Response. EVIDENCE-BASED COMPLEMENTARY AND ALTERNATIVE MEDICINE 2021; 2021:8490772. [PMID: 34812266 PMCID: PMC8605918 DOI: 10.1155/2021/8490772] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/26/2021] [Accepted: 10/18/2021] [Indexed: 12/11/2022]
Abstract
Objective The aim of this study was to explore the pharmacological effects of curcumin on oxidative stress and inflammatory response of renal dysfunction induced by renal ischemia/reperfusion (RIRI). Methods Fifty male SD rats (Sprague Dawley) were randomly divided into the sham group, RIRI group, and curcumin group (low, medium, and high). The RIRI model was established by clipping the left renal artery for 45 min and then reperfusion for 24 h and resection of the contralateral kidney. In the curcumin group, curcumin was intraperitoneally injected once a day for 3 consecutive days using different dosage regimens. The RIRI group was intraperitoneally administered with normal saline. Renal injury was evaluated by measuring the concentration of creatinine (Cr) and urea nitrogen (BUN) in serum. Oxidative stress was assessed by assessing the level of malondialdehyde (MDA), superoxide dismutase (SOD), catalase (CAT), glutathione peroxidase (GPx), glutathione (GSH), and iron reduction/antioxidant capacity (FRAP) in tissues. In addition, the protective effect of RIRI was investigated by measuring Paller scores, the level of serum inflammatory factors and caspase-3, and the number of apoptotic cells. Results Ischemia/reperfusion resulted in increased levels of Cr and BUN in serum and MDA in tissues and decreased levels of SOD, CAT, GPx, GSH, and FRAP. Curcumin pretreatment strikingly increased the level of SOD, CAT, GPx, GSH, IL-10, IFN-γ, and FRAP and significantly decreased MDA, Cr, BUN, IL-8, TNF-α, IL-6, and myeloperoxidase (MPO) expressions in tissues. Conclusion Curcumin can relieve the degree of renal injury and improve renal function in ischemia-reperfusion, which may be related to the fact that curcumin can increase SOD content in serum and reduce MDA and FRAP levels in the rat model.
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Mohammadian Haftcheshmeh S, Momtazi-Borojeni AA. Berberine as a promising natural compound for the treatment of periodontal disease: A focus on anti-inflammatory properties. J Cell Mol Med 2021; 25:11333-11337. [PMID: 34719112 PMCID: PMC8650036 DOI: 10.1111/jcmm.17019] [Citation(s) in RCA: 23] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/08/2021] [Revised: 09/01/2021] [Accepted: 10/12/2021] [Indexed: 12/12/2022] Open
Abstract
Accumulating evidence during the last two decades has addressed the potential anti‐inflammatory properties of berberine (BBR), a bioactive alkaloid compound isolated from Coptidis rhizoma, in controlling or treating several inflammatory diseases. Periodontitis is one of the most common chronic and serious inflammatory diseases, in which uncontrolled and unabated host immune responses against periodontopathic pathogens play critical and crucial roles in the disease pathogenesis. Hence, regulating inflammatory responses in periodontitis has a valuable approach and holds promise in treating periodontitis. For the first time, this paper reviews the evidence from in vitro and in vivo experimental models to explore the anti‐inflammatory effects of BBR in periodontitis and exhibits that BBR has the high potency to exert anti‐inflammatory effects by reducing expression and secretion of pro‐inflammatory mediators including TNF‐α, IL‐1β, IL‐17, RANKL, MMP‐2, MMP‐9 and MCP‐1. The BBR‐mediated anti‐inflammatory actions could translate into the inhibition of the periodontal tissues and alveolar bone destruction and the control of the disease in vivo. As the second aim of this paper, we also paid attention to the therapeutic potential of BBR in treating human diseases regarding its anti‐inflammatory properties.
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Affiliation(s)
| | - Amir Abbas Momtazi-Borojeni
- Department of Medical Biotechnology, School of Medicine, Alborz University of Medical Sciences, Karaj, Iran.,Iran's National Elites Foundation, Tehran, Iran
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Hsiao AF, Lien YC, Tzeng IS, Liu CT, Chou SH, Horng YS. The efficacy of high- and low-dose curcumin in knee osteoarthritis: A systematic review and meta-analysis. Complement Ther Med 2021; 63:102775. [PMID: 34537344 DOI: 10.1016/j.ctim.2021.102775] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/05/2021] [Revised: 08/11/2021] [Accepted: 09/14/2021] [Indexed: 10/20/2022] Open
Abstract
OBJECTIVES The aim of this study was to critically appraise and evaluate effects of low- and high-dose curcuminoids on pain and functional improvement in patients with knee osteoarthritis (OA) and to compare adverse events (AEs) between curcuminoids and non-steroid anti-inflammatory drugs (NSAIDs). METHODS We systematically reviewed all randomized controlled trials (RCTs) on curcuminoids in knee osteoarthritis from the PubMed, Embase, Cochrane Library, AMED, Cinahl, ISI Web of Science, Chinese medical database, and Indian Scientific databases from inception to June 21, 2021. RESULTS We included eleven studies with a total of 1258 participants with primary knee OA. The meta-analysis results showed that curcuminoids were significantly more effective than comparators regarding visual analogue scale (VAS) and Western Ontario and McMaster Universities Arthritis Index (WOMAC) pain scores. However, no significant difference in pain relief or AEs between the high-dose (daily dose ≥1000 mg or total dose ≥42 gm) and low-dose (daily dose <1000 mg or total dose <42 gm) curcuminoid treatments was observed. When comparing curcumininoids versus NSAIDs, a significant difference in VAS pain was found. For AE analysis, three of our included studies used NSAIDs as comparators, with all reporting higher AE rates in the NSAID group, though significance was reached in only one study. CONCLUSIONS The results of our meta-analysis suggest that low- and high-dose curcuminoids have similar pain relief effects and AEs in knee OA. Curcuminoids are also associated with better pain relief than NSAIDs; therefore, using curcuminoids as an adjunctive treatment in knee OA is recommended.
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Affiliation(s)
- An-Fang Hsiao
- Department of Physical Medicine and Rehabilitation, Cheng Ching Hospital Chung Kang Branch, Taichung City, Taiwan, ROC
| | - Yi-Chieh Lien
- Department of Physical Medicine and Rehabilitation, Cardinal Tien Hospital An Kang Branch, New Taipei City, Taiwan, ROC
| | - I-Shiang Tzeng
- Department of Research, Taipei Tzu chi Hospital, Buddhist Tzu chi Medical Foundation, New Taipei City, Taiwan, ROC
| | - Chien-Ting Liu
- Department of Physical Medicine and Rehabilitation, Taipei Tzu chi Hospital, Buddhist Tzu chi Medical Foundation, New Taipei City, Taiwan, ROC; Department of Medicine, Tzu Chi University, Hualien, Taiwan, ROC
| | - Sheng-Hsun Chou
- Department of Physical Medicine and Rehabilitation, Taipei Tzu chi Hospital, Buddhist Tzu chi Medical Foundation, New Taipei City, Taiwan, ROC
| | - Yi-Shiung Horng
- Department of Physical Medicine and Rehabilitation, Taipei Tzu chi Hospital, Buddhist Tzu chi Medical Foundation, New Taipei City, Taiwan, ROC; Department of Medicine, Tzu Chi University, Hualien, Taiwan, ROC.
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Sharif K, Kurnick A, Coplan L, Alexander M, Watad A, Amital H, Shoenfeld Y. The Putative Adverse Effects of Bisphenol A on Autoimmune Diseases. Endocr Metab Immune Disord Drug Targets 2021; 22:665-676. [PMID: 33568039 DOI: 10.2174/1871530321666210210154309] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/06/2020] [Revised: 12/11/2020] [Accepted: 12/18/2020] [Indexed: 11/22/2022]
Abstract
Bisphenol A (BPA) is a monomer that is widely used in the manufacture of polycarbonate plastics including storage plastics and baby bottles, and is considered one of the most widely used synthetic compounds in the manufacturing industry. Exposure to BPA mainly occurs after oral ingestion and results from leaks into food and water from plastic containers and according to epidemiological data exposure is widespread and estimated to occur in 90% of individuals. BPA exertspleiotropiceffects and demonstrates estrogen like effects, thus considered an endocrine disrupting chemical. Growing body of evidence highlight the role of BPA in modulating immune responses and signaling pathways resulting in a proinflammatory response by enhancing the differential polarization of immune cells and cytokine production profile to one that is consistent with proinflammation. Indeed, epidemiological studies have uncovered associations between several autoimmune diseases and BPA exposure. Data from animal models provided consistent evidence highlighting the role of BPA in the pathogenesis, exacerbation and perpetuation of various autoimmune phenomena including neuroinflammation in the context of multiple sclerosis, colitis in inflammatory bowel disease, nephritis in systemic lupus erythematosus, and insulitis in type 1 diabetes mellitus. Given the wide spread of BPA use and its effects in immune systemdysregulation, a call for careful assessment of patients' risks and for public health measures are needed to limit exposure and subsequent deleterious effects. The purpose of this paper is to explore the autoimmune triggering mechanisms and present the current literature supporting the role of BPA in the pathogenesis of autoimmune diseases.
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Affiliation(s)
- Kassem Sharif
- Sackler Faculty of Medicine, Tel-Aviv University, Tel-Aviv. Israel
| | - Adam Kurnick
- Sackler Faculty of Medicine, Tel-Aviv University, Tel-Aviv. Israel
| | - Louis Coplan
- Sackler Faculty of Medicine, Tel-Aviv University, Tel-Aviv. Israel
| | | | - Abdulla Watad
- Sackler Faculty of Medicine, Tel-Aviv University, Tel-Aviv. Israel
| | - Howard Amital
- Sackler Faculty of Medicine, Tel-Aviv University, Tel-Aviv. Israel
| | - Yehuda Shoenfeld
- Sackler Faculty of Medicine, Tel-Aviv University, Tel-Aviv. Israel
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Hemshekhar M, Anaparti V, El-Gabalawy H, Mookherjee N. A bioavailable form of curcumin, in combination with vitamin-D- and omega-3-enriched diet, modifies disease onset and outcomes in a murine model of collagen-induced arthritis. Arthritis Res Ther 2021; 23:39. [PMID: 33494792 PMCID: PMC7836561 DOI: 10.1186/s13075-021-02423-z] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/20/2020] [Accepted: 01/11/2021] [Indexed: 02/07/2023] Open
Abstract
OBJECTIVE Curcumin (CUR), vitamin D3 (D3), and omega-3-fatty acids (O3FA) individually modulate inflammation and pain in arthritis. Although these supplements are widely used, their combinatorial effects have not been defined. In this study, we examined the effects of a D3 and O3FA (VO)-enriched diet in conjunction with a highly bioavailable form of CUR (Cureit/Acumin™) in a collagen-induced arthritis (CIA) murine model. METHODS Male DBA/1J mice were acclimatized to VO-enriched diet and challenged with bovine collagen II (CII). Bioavailable CUR was administered daily by oral gavage from the onset of CII challenge. Disease severity was determined by monitoring joint thickness and standardized clinical score. Cellular infiltration and cartilage degradation in the joints were assessed by histology, serum cytokines profiled by Meso Scale Discovery multiplex assay, and joint matrix metalloproteinases examined by western blots. RESULTS CUR by itself significantly decreased disease severity by ~ 60%. Administration of CUR in CIA mice taking a VO-enriched diet decreased disease severity by > 80% and maximally delayed disease onset and progression. Some of the disease-modifying effects was mediated by CUR alone, e.g., suppression of serum anti-collagen antibodies and decrease of cellular infiltration and MMP abundance in the joints of CIA mice. Although CUR alone suppressed inflammatory cytokines in serum of CIA mice, the combination of CUR and VO diet significantly enhanced the suppression (> 2-fold compared to CUR) of TNF, IFN-γ, and MCP-1, all known to be associated with RA pathogenesis. CONCLUSION This study provides proof-of-concept that the combination of bioavailable CUR, vitamin D3, and O3FA substantially delays the development and severity of CIA. These findings provide a rationale for systematically evaluating these widely available supplements in individuals at risk for developing future RA.
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Affiliation(s)
- Mahadevappa Hemshekhar
- Manitoba Centre for Proteomics and Systems Biology, Department of Internal Medicine, University of Manitoba, 799 John Buhler Research Centre, 715 McDermot Ave, Winnipeg, MB, Canada
| | - Vidyanand Anaparti
- Manitoba Centre for Proteomics and Systems Biology, Department of Internal Medicine, University of Manitoba, 799 John Buhler Research Centre, 715 McDermot Ave, Winnipeg, MB, Canada
| | - Hani El-Gabalawy
- Manitoba Centre for Proteomics and Systems Biology, Department of Internal Medicine, University of Manitoba, 799 John Buhler Research Centre, 715 McDermot Ave, Winnipeg, MB, Canada.,Division of Rheumatology, Department of Internal Medicine, University of Manitoba, Winnipeg, MB, Canada.,Department of Immunology, University of Manitoba, Winnipeg, MB, R3E3P4, Canada
| | - Neeloffer Mookherjee
- Manitoba Centre for Proteomics and Systems Biology, Department of Internal Medicine, University of Manitoba, 799 John Buhler Research Centre, 715 McDermot Ave, Winnipeg, MB, Canada. .,Department of Immunology, University of Manitoba, Winnipeg, MB, R3E3P4, Canada.
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Natural Polyhydroxy Flavonoids, Curcuminoids, and Synthetic Curcumin Analogs as α7 nAChRs Positive Allosteric Modulators. Int J Mol Sci 2021; 22:ijms22020973. [PMID: 33478095 PMCID: PMC7835927 DOI: 10.3390/ijms22020973] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/24/2020] [Revised: 01/12/2021] [Accepted: 01/16/2021] [Indexed: 12/20/2022] Open
Abstract
The α7 nicotinic acetylcholine receptor (α7 nAChR) is a ligand-gated ion channel that is involved in cognition disorders, schizophrenia, pain, and inflammation. Allosteric modulation of this receptor might be advantageous to reduce the toxicity in comparison with full agonists. Our previous results obtained with some hydroxy-chalcones, which were identified as positive allosteric modulators (PAMs) of α7 nAChR, prompted us to evaluate the potential of some structurally related naturally occurring flavonoids and curcuminoids and some synthetic curcumin analogues, with the aim of identifying new allosteric modulators of the α7 nAChR. Biological evaluation showed that phloretin, demethoxycurcumin, and bis-demethoxicurcuming behave as PAMs of α7 nAChR. In addition, some new curcumin derivatives were able to enhance the signal evoked by ACh; the activity values found for the tetrahydrocurcuminoid analog 23 were especially promising.
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