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Kassuya RM, Dos Santos E, Bosso FH, Pedroso TF, Marinho JVN, Salvador MJ, Kassuya CAL, Gasparotto Junior A. Anti-inflammatory Properties of Ethanolic Extract and 2″-O-β-D-Glucopyranosyl-vitexin Obtained from Alternanthera tenella Colla Whole Plant. Inflammation 2021; 44:1540-1552. [PMID: 33646486 DOI: 10.1007/s10753-021-01438-7] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/14/2021] [Revised: 02/04/2021] [Accepted: 02/10/2021] [Indexed: 11/25/2022]
Abstract
Six flavonoids were identified and isolated from the ethanolic extract of Alternanthera tenella Colla (Amaranthaceae) whole plant (EEAT) including 2″-O-β-D-glucopyranosyl-vitexin (A19). Flavonoids have anti-inflammatory activity; however, the 2″-O-β-D-glucopyranosyl-vitexin anti-inflammatory property was not totally explored. The aim of the present study was to investigate the anti-inflammatory effects of ethanolic extract from A. tenella whole plant and isolated flavone C-glycoside A19 in models of inflammation. The oral administration (p.o.) of EEAT (30, 100, and 300 mg/kg), A19 (0.1, 1, and 10 mg/kg), and prednisolone (3 mg/kg) were tested against the carrageenan-induced paw edema in Swiss mice. The EEAT (100 mg/kg, p.o.), A19 (1 mg/kg, p.o.), and prednisolone (3 mg/kg, p.o.) were tested in the zymosan-articular inflammation, carrageenan-pleurisy, and complete Freund's adjuvant (CFA) models in Swiss mice. In silico analysis and search for structural relationships between vitexin derivatives flavones present in the EEAT and TNF-α inhibitors were performed. EEAT, A19, and prednisolone significantly inhibited (i) edema, mechanical hyperalgesia in carrageenan-induced paw inflammation; (ii) leukocyte migration and protein extravasation in carrageenan-induced pleurisy; (iii) knee edema, mechanical hyperalgesia, and leukocyte migration in articular inflammation induced by zymosan. Still the CFA induced the increase in myeloperoxidase and N-acetylglucosaminidase activities, EEAT, A19, and prednisolone significantly inhibited these enzymes. The in silico analysis showed that molecules with similar structure to apigenin and vitexin have a potential inhibition on the TNF system. This study confirms the anti-inflammatory properties of EEAT and A19. The C-glycosylated flavone A19 could be responsible for the EEAT anti-edematogenic and anti-hyperalgesic effects and a potential TNF-α inhibitor.
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Affiliation(s)
- Roberto Mikio Kassuya
- College of Health Science, Federal University of Grande Dourados, Dourados, MS, Brazil
| | - Elisangela Dos Santos
- College of Health Science, Federal University of Grande Dourados, Dourados, MS, Brazil
| | - Fernando Henrique Bosso
- Institute of Biology, Department of Plant Biology, PPG BTPB, PPG BV and PPG BCE, University of Campinas (UNICAMP), Campinas, São Paulo, Brazil
| | - Taíse Fonseca Pedroso
- Institute of Biology, Department of Plant Biology, PPG BTPB, PPG BV and PPG BCE, University of Campinas (UNICAMP), Campinas, São Paulo, Brazil
| | - Jane Vasconcelos Neves Marinho
- Institute of Biology, Department of Plant Biology, PPG BTPB, PPG BV and PPG BCE, University of Campinas (UNICAMP), Campinas, São Paulo, Brazil
| | - Marcos José Salvador
- Institute of Biology, Department of Plant Biology, PPG BTPB, PPG BV and PPG BCE, University of Campinas (UNICAMP), Campinas, São Paulo, Brazil
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Flint RW, Haller NA, Urban KA, Newberry BH. Lipopolysaccharide-Induced Immunostimulation Produces A Dose- and Time-Dependent Decrease in General Activity and Weight Gain in Preweanling Rats. PSYCHOLOGICAL RECORD 2017. [DOI: 10.1007/bf03395444] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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Joosten LA, Helsen MM, van Den Berg WB. Blockade of endogenous interleukin 12 results in suppression of murine streptococcal cell wall arthritis by enhancement of interleukin 10 and interleukin 1Ra. Ann Rheum Dis 2000; 59:196-205. [PMID: 10700428 PMCID: PMC1753084 DOI: 10.1136/ard.59.3.196] [Citation(s) in RCA: 20] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Abstract
OBJECTIVE The goal of this study was to investigate the role of endogenous interleukin 12 (IL12) in acute murine streptococcal cell wall (SCW) arthritis. METHODS C57black/6 mice were injected intraperitoneally with rat anti-murine IL12 (C17.8), shortly before induction of arthritis by intra-articular injection of 25 microg SCW fragments into the right knee joint. Joint swelling and chondrocyte synthetic function was analysed several days after induction of SCW arthritis. Local cytokine profile was determined, protein by using ELISA and mRNA by RT-PCR technology. To confirm the findings at later time points, tissue chamber model of inflammation was used. Histology was performed to examine cell influx and cartilage damage. RESULTS Suppression of joint swelling was noted at days 2 and 4, whereas no suppressive effect of anti-IL12 was found at day 1. Severe inhibition of chondrocyte proteoglycan synthesis was seen at day 1 in both arthritic control and anti-IL12 treated mice. However, chondrocyte function was restored at day 4 of arthritis in the anti-IL12 injected animals, but not in the arthritic controls. Moreover, cell influx in synovial tissue and joint cavity was reduced by anti-IL12 treatment. Neutralisation of IL12 reduced the local levels of IL1beta, IL12 and interferon gamma, when examined shortly after induction of SCW arthritis, whereas tumour necrosis factor alpha levels were not affected. In contrast, IL10 and IL1Ra protein and mRNA levels were strongly up regulated in synovial tissues after IL12 blockade. Enhancement of IL10 and IL1Ra by anti-IL12 was confirmed in a tissue chamber model with SCW induced inflammation. CONCLUSIONS This study indicates that IL12 is a pro-inflammatory cytokine during onset of acute SCW arthritis. Balances of proinflammatory and anti-inflammatory cytokines were strongly improved by anti-IL12 treatment.
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Affiliation(s)
- L A Joosten
- Department of Rheumatology, University Hospital Nijmegen, PO Box 9101, 6500 HB Nijmegen, The Netherlands
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