51
|
Nakata A, Koike Y, Matsui H, Shimada T, Aburada M, Yang J. Potent SIRT1 Enzyme-stimulating and Anti-glycation Activities of Polymethoxyflavonoids from Kaempferia parviflora. Nat Prod Commun 2014. [DOI: 10.1177/1934578x1400900918] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
The SIRT1 enzyme-stimulating and anti-glycation activities of Kaempferia parviflora extract and its main polymethoxyflavonoids were evaluated in vitro. K. parviflora extract elevated SIRT1 catalytic activity by eight- and 17-fold at 20 μg/mL and 100 μg/mL, respectively, compared with vehicle only. Two major polymethoxyflavonoids, 3,5,7,3′,4′-pentamethoxyflavone (4) and 5,7,4′-trimethoxyflavone (5), were isolated from this extract and are four- and fivefold more potent than resveratrol, hitherto the strongest known natural SIRT1 activator. In addition, the anti-glycation activity of K. parviflora extract was observed to be seven times more effective than aminoguanidine, a clinical anti-diabetes drug. 3,5,7,3′,4′-Pentamethoxyflavone (4) and 5,7,4′-trimethoxyflavone (5) showed the strongest anti-glycation activity among the tested polymethoxyflavonoids. Further comparison of the activity of these structurally related polymethoxyflavonoids revealed a possible structure-activity relationship, in particular, for the contribution of methoxy moieties.
Collapse
Affiliation(s)
- Asami Nakata
- Tokiwa Phytochemical Co. Ltd., 158 Kinoko, Sakura, Chiba 285-0801, Japan
| | - Yuka Koike
- Division of Pharmacognosy & Phytochemistry Department of Medicinal Chemistry, Showa University, 1-5-8 Hatanodai, Shinagawa-ku, Tokyo 142-8555, Japan
| | - Hirofumi Matsui
- Division of Clinical Medicine, Faculty of Medicine, University of Tsukuba, 1-1-1 Tennnodai, Tsukuba-shi, Ibaraki 305-8575, Japan
| | - Tsutomu Shimada
- Research Institute of Pharmaceutical Science, Musashino University, 1-1-20 Shimachi, Nishitokyo-shi, Tokyo 202-8585, Japan
| | - Masaki Aburada
- Research Institute of Pharmaceutical Science, Musashino University, 1-1-20 Shimachi, Nishitokyo-shi, Tokyo 202-8585, Japan
| | - Jinwei Yang
- Tokiwa Phytochemical Co. Ltd., 158 Kinoko, Sakura, Chiba 285-0801, Japan
| |
Collapse
|
52
|
Tuntiyasawasdikul S, Limpongsa E, Jaipakdee N, Sripanidkulchai B. Transdermal permeation of Kaempferia parviflora methoxyflavones from isopropyl myristate-based vehicles. AAPS PharmSciTech 2014; 15:947-55. [PMID: 24789664 DOI: 10.1208/s12249-014-0122-y] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/04/2013] [Accepted: 04/01/2014] [Indexed: 11/30/2022] Open
Abstract
Kaempferia parviflora (K. parviflora) rhizomes have long been used in traditional folk medicines and as general health-promoting agents. Several biological activities of K. parviflora, especially its anti-inflammatory effect, are due to its major constituents, methoxyflavones. However, the oral bioavailability of these methoxyflavones has been shown to be low. The aim of this study was to investigate the permeation behaviors of K. parviflora methoxyflavones from isopropyl myristate (IPM)-based vehicles. We studied the effects of ethanol and propylene glycol (PG) as the hydrophilic, solvent-type vehicles as well as fatty acids as the permeation enhancers. A permeation experiment was performed in vitro, using side-by-side diffusion cells through the full thickness of pig ear skin. The solubility and permeation of methoxyflavones were able to be modified by choice and ratio of vehicles. The ethanol/IPM vehicle was shown to be more effective in enhancing the solubility and permeation of methoxyflavones when compared to the PG/IPM vehicle. Regarding an optimal balance between solubility or affinity to vehicle and skin to vehicle partition coefficient, the ethanol/IPM vehicle in the ratio of 1:9 maximized the flux. Among the investigated fatty acids, oleic acid showed the greatest enhancing effect on the permeation of methoxyflavones, indicating that saturated fatty acids are less effective than unsaturated fatty acids. Long chain fatty acids increased diffusion coefficient parameter and shortened the lag time. The number of carbon atoms and double bonds of fatty acids did not show direct relation to the profile of permeation of methoxyflavones.
Collapse
|
53
|
Sudsai T, Prabpai S, Kongsaeree P, Wattanapiromsakul C, Tewtrakul S. Anti-inflammatory activity of compounds from Boesenbergia longiflora rhizomes. JOURNAL OF ETHNOPHARMACOLOGY 2014; 154:453-461. [PMID: 24786574 DOI: 10.1016/j.jep.2014.04.034] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/09/2013] [Revised: 04/08/2014] [Accepted: 04/19/2014] [Indexed: 06/03/2023]
Abstract
ETHNOPHARMACOLOGICAL RELEVANCE The rhizomes of Boesenbergia longiflora (Wall.) Kuntze have been traditionally used in treatment of inflammatory bowel disease, ulcerative colitis, aphthous ulcer and abscess. Our previous study indicated that CHCl3 fractions of Boesenbergia longiflora had potential on anti-inflammatory properties. In the present study, we investigated the active constituents of this plant for anti-inflammatory activity in order to support its traditional use. MATERIAL AND METHODS The CHCl3 fraction was isolated using chromatographic techniques. Isolated compounds were tested using relevant in vitro anti-inflammatory assays against LPS-induced NO and TNF-α releases as well as their mechanisms in transcription levels in murine macrophage RAW264.7 cells. RESULTS The isolation of the CHCl3 fraction from Boesenbergia longiflora rhizomes led to the isolation of three new daucane sesquiterpenes, which were identified as 8-hydroxy-dauca-9, 11-diene-7-one (longiferone A; 1), dauca-8, 11-diene-7-one (longiferone B; 2) and dauca-8, 11-diene-7, 10-dione (longiferone C; 3); together with four known flavonoids, six known diarylheptanoids as well as one sterol. The longiferone B (2) and longiferone C (3) showed anti-inflammatory activity against NO release with IC50 values of 21.0 and 31.3µM, respectively. Longiferone B (2) also suppressed the iNOS and COX-2 mRNA expression. Moreover, the flavonoids and diarylheptanoids inhibited NO and TNF-α production in a dose dependent manner. CONCLUSION This study demonstrated that sesquiterpenes, diarylheptanoids and some methoxyflavonoids found in Boesenbergia longiflora are responsible for anti-inflammatory activity.
Collapse
Affiliation(s)
- Teeratad Sudsai
- Department of Pharmacognosy and Pharmaceutical Botany, Faculty of Pharmaceutical Sciences, Prince of Songkla University, Songkhla 90112, Thailand; Department of Chemistry and Center of Excellence for Innovation in Chemistry, Faculty of Science, Prince of Songkla University, Songkhla 90112, Thailand; Faculty of Oriental Medicine, Rangsit University, Patumthani 12000, Thailand
| | - Samran Prabpai
- Department of Chemistry and Center for Excellence in Protein Structure and Function, Faculty of Science, Mahidol University, Bangkok 10400, Thailand
| | - Palangpon Kongsaeree
- Department of Chemistry and Center for Excellence in Protein Structure and Function, Faculty of Science, Mahidol University, Bangkok 10400, Thailand
| | - Chatchai Wattanapiromsakul
- Department of Pharmacognosy and Pharmaceutical Botany, Faculty of Pharmaceutical Sciences, Prince of Songkla University, Songkhla 90112, Thailand
| | - Supinya Tewtrakul
- Department of Pharmacognosy and Pharmaceutical Botany, Faculty of Pharmaceutical Sciences, Prince of Songkla University, Songkhla 90112, Thailand; Department of Chemistry and Center of Excellence for Innovation in Chemistry, Faculty of Science, Prince of Songkla University, Songkhla 90112, Thailand.
| |
Collapse
|
54
|
Wei GJ, Hwang LS, Tsai CL. Absolute bioavailability, pharmacokinetics and excretion of 5,7,3′,4′-tetramethoxyflavone in rats. J Funct Foods 2014. [DOI: 10.1016/j.jff.2013.10.006] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022] Open
|
55
|
Sudsai T, Wattanapiromsakul C, Nakpheng T, Tewtrakul S. Evaluation of the wound healing property of Boesenbergia longiflora rhizomes. JOURNAL OF ETHNOPHARMACOLOGY 2013; 150:223-231. [PMID: 23994340 DOI: 10.1016/j.jep.2013.08.038] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/29/2013] [Revised: 08/09/2013] [Accepted: 08/13/2013] [Indexed: 06/02/2023]
Abstract
ETHNOPHARMACOLOGICAL RELEVANCE The rhizomes of Boesenbergia longiflora (Wall.) Kuntze (Zingiberaceae) have been traditionally used for treatment of inflammatory bowel disease, ulcerative colitis, aphthous ulcer and abscess by decoction with alcohol. AIM OF THE STUDY The rhizomes of Boesenbergia longiflora were carried out to investigate for anti-inflammatory and wound healing activities in order to support the traditional use. MATERIAL AND METHODS The ethanolic extract of Boesenbergia longiflora and its fractions were tested using relevant in vitro anti-inflammatory and wound healing assays. For the in vitro studies, murine macrophage RAW264.7 cells and mouse fibroblast L929 cells were assessed for anti-inflammatory and fibroblast stimulatory activities, respectively. In vivo anti-inflammatory activity was determined by carrageenan-induced rat paw edema model as well as acute toxicity estimated by the up-and-down method in mice. RESULTS The present study has demonstrated that the ethanolic extract of Boesenbergia longiflora rhizomes possesses a potent anti-inflammatory and wound healing activities. Among the isolated fractions, the CHCl3 fraction showed potent anti-inflammatory effect through nitric oxide inhibitory activity (IC50=5.5 μg/ml) and reduction of carrageenan-induced rat paw edema (ED50=222.7 mg/kg), whereas this fraction exhibited wound healing property via fibroblast migration on both day 1 (77.3%) and day 2 (100%) as well as enhanced collagen production (187.5 μg/ml) at concentration of 3 μg/ml, compared to that of the controls, 39.4% for fibroblast and 60.8 μg/ml for collagen, respectively. The anti-inflammatory mechanism of the CHCl3 fraction is found to suppress the iNOS and COX-2 mRNA expression. CONCLUSION The scientific investigation of wound healing activity of Boesenbergia longiflora rhizomes support the Thai traditional uses for treatment of inflammatory bowel disease, ulcerative colitis, aphthous ulcer and abscess. The EtOH extract and CHCl3 fraction exert potential wound healing property through NO inhibition, anti-oxidant effect and stimulation of fibroblast migration and collagen production. The phytochemical screening revealed that the CHCl3 fraction of Boesenbergia longiflora rhizomes contains diarylheptanoids, flavonoids and terpenes. The isolation of the compounds responsible for the wound healing effect is now in progress.
Collapse
Affiliation(s)
- Teeratad Sudsai
- Department of Pharmacognosy and Pharmaceutical Botany, Faculty of Pharmaceutical Sciences, Prince of Songkla University, Songkhla 90112, Thailand; Department of Chemistry and Center of Excellence for Innovation in Chemistry, Faculty of Science, Prince of Songkla University, Songkhla 90112, Thailand
| | | | | | | |
Collapse
|
56
|
Buapool D, Mongkol N, Chantimal J, Roytrakul S, Srisook E, Srisook K. Molecular mechanism of anti-inflammatory activity of Pluchea indica leaves in macrophages RAW 264.7 and its action in animal models ofinflammation. JOURNAL OF ETHNOPHARMACOLOGY 2013; 146:495-504. [PMID: 23353896 DOI: 10.1016/j.jep.2013.01.014] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/24/2012] [Revised: 12/17/2012] [Accepted: 01/10/2013] [Indexed: 06/01/2023]
Abstract
ETHNOPHARMACOLOGICAL RELEVANCE PLUCHEA INDICA LESS.: (Asteraceae) is a Thai medicinal plant used in traditional medicine for the treatment of hemorrhoids, lumbago, leucorrhoea and inflammation. This study investigated the molecular mechanism of anti-inflammatory activity of Pluchea indica leaf extract in lipopolysaccharide (LPS)-stimulated RAW 264.7 macrophages and also determined its action in acute inflammation animal models. MATERIALS AND METHODS The inhibitory effect of Pluchea indica leaf extract on LPS-induced nitric oxide (NO) production was evaluated by Griess reaction. Protein and mRNA expressions were determined by real time RT-PCR and Western blotting analysis, respectively. Inducible nitric oxide synthase (iNOS) promoter activity was evaluated by iNOS promoter based reporter gene assay. In vivo anti-inflammatory effect was examined in ethylphenylpropiolate (EPP)-induced ear edema and carrageenan-induced paw edema in rat models. RESULTS Ethyl acetate fraction of ethanol extract of Pluchea indica leaves (EFPI) exhibited the potent inhibitory effect on NO production in LPS-induced macrophages and also inhibited PGE2 release. EFPI reduced iNOS mRNA and protein expression through suppressed iNOS promoter activity and nuclear translocation of subunit p65 of nuclear factor-κB, but did not inhibit phosphorylation of the mitogen-activated protein kinases (MAPKs). Moreover, EFPI possessed anti-inflammatory activities on acute phase of inflammation as seen in EPP-induced ear edema and carrageenan-induced paw edema inrats. CONCLUSIONS These data support the pharmacological basis of Pluchea indica plant as a traditional herbal medicine for treatment of inflammation.
Collapse
Affiliation(s)
- Doungnapa Buapool
- Biological Science Program, Faculty of Science, Burapha University, Saensook, Muang, Chonburi 20131, Thailand
| | | | | | | | | | | |
Collapse
|
57
|
Mekjaruskul C, Yang YT, Leed MG, Sadgrove MP, Jay M, Sripanidkulchai B. Novel formulation strategies for enhancing oral delivery of methoxyflavones in Kaempferia parviflora by SMEDDS or complexation with 2-hydroxypropyl-β-cyclodextrin. Int J Pharm 2013; 445:1-11. [DOI: 10.1016/j.ijpharm.2013.01.052] [Citation(s) in RCA: 35] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/29/2012] [Revised: 12/24/2012] [Accepted: 01/24/2013] [Indexed: 11/16/2022]
|
58
|
Mekjaruskul C, Jay M, Sripanidkulchai B. Pharmacokinetics, Bioavailability, Tissue Distribution, Excretion, and Metabolite Identification of Methoxyflavones in Kaempferia parviflora Extract in Rats. Drug Metab Dispos 2012; 40:2342-53. [DOI: 10.1124/dmd.112.047142] [Citation(s) in RCA: 49] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023] Open
|
59
|
Muangnoi C, Chingsuwanrote P, Praengamthanachoti P, Svasti S, Tuntipopipat S. Moringa oleifera pod inhibits inflammatory mediator production by lipopolysaccharide-stimulated RAW 264.7 murine macrophage cell lines. Inflammation 2012; 35:445-55. [PMID: 21537903 DOI: 10.1007/s10753-011-9334-4] [Citation(s) in RCA: 41] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Pro-inflammatory mediators produced during inflammatory response have been demonstrated to initiate and aggravate pathological development of several chronic diseases. Plant bioactive constituents have been reported to exert anti-inflammatory activities. Various parts of Moringa oleifera have long been used as habitual diets and traditional remedy along the tropical region. Anti-inflammatory activity of boiled M. oleifera pod extract was assessed by measuring pro-inflammatory mediator expression in the lipopolysaccharide-induced murine RAW264.7 macrophage cells. Prior treatment with 31-250 μg/mL M. oleifera extract for 1 h inhibited elevation of mRNA and protein level of interleukine-6, tumor necrosis factor-alpha, inducible nitric oxide synthase, and cyclooxygenease-2, induced by lipopolysaccharide for 24 h in a dose-dependent manner. The suppressive effect was mediated partly by inhibiting phosphorylation of inhibitor kappa B protein and mitogen-activated protein kinases. These results indicate that the anti-inflammatory activity from bioactive compounds present in the M. oleifera pod constituents may contribute to ameliorate the pathogenesis of inflammatory-associated chronic diseases.
Collapse
Affiliation(s)
- Channarong Muangnoi
- Institute of Nutrition, Mahidol University, Putthamonthon 4 Rd, Nakhon Pathom 73170, Thailand
| | | | | | | | | |
Collapse
|
60
|
Anti-inflammatory activity of diterpenes from Croton stellatopilosus on LPS-induced RAW264.7 cells. J Nat Med 2012; 67:174-81. [PMID: 22529050 DOI: 10.1007/s11418-012-0668-5] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/10/2011] [Accepted: 03/23/2012] [Indexed: 10/28/2022]
Abstract
An acyclic diterpene (plaunotol; 1) and two furanoditerpenes (plaunolide, 2 and plaunol E, 3), were isolated from Croton stellatopilosus leaves, and assessed for their inhibitory activity on nitric oxide (NO) production by lipopolysaccharide (LPS)-induced RAW264.7 cells. Plaunotol, plaunolide and plaunol E exhibited inhibitory activity with IC(50) values of 3.41, 17.09 and 2.79 μM, respectively. Cytotoxic effects were observed at concentrations of ≥100 μM for plaunotol and ≥10 μM for plaunol E. In order to understand the mechanism of this anti-inflammatory activity, transcription profiles of the COX-1, COX-2 and iNOS genes were measured using a quantitative RT-PCR technique. The level of gene expression was expressed as a relative quantitation according to the comparative C (T) method. The results indicated that plaunotol stimulated the COX-1 and COX-2 genes, and suppressed expression of the iNOS gene. Treatment of cells with plaunolide caused a downregulation of the expressions of the COX-1, COX-2 and iNOS genes. In contrast, plaunol E inhibited the expression of the COX-2, stimulated COX-1 and iNOS expressions. In summary, the present study shows that different diterpenes from C. stellatopilosus leaves exhibit anti-inflammatory activity towards LPS-activated RAW264.7 cells by different mechanisms. Our results provide data to support further investigations into the possibility that these diterpenes could be alternatives to act as anti-inflammatory agents.
Collapse
|
61
|
Identification of human IKK-2 inhibitors of natural origin (Part II): In Silico prediction of IKK-2 inhibitors in natural extracts with known anti-inflammatory activity. Eur J Med Chem 2011; 46:6098-103. [DOI: 10.1016/j.ejmech.2011.09.022] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/03/2011] [Revised: 09/12/2011] [Accepted: 09/15/2011] [Indexed: 01/15/2023]
|
62
|
Shimada T, Horikawa T, Ikeya Y, Matsuo H, Kinoshita K, Taguchi T, Ichinose K, Takahashi K, Aburada M. Preventive effect of Kaempferia parviflora ethyl acetate extract and its major components polymethoxyflavonoid on metabolic diseases. Fitoterapia 2011; 82:1272-8. [DOI: 10.1016/j.fitote.2011.08.018] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/13/2011] [Revised: 08/19/2011] [Accepted: 08/20/2011] [Indexed: 11/17/2022]
|
63
|
Sae-Wong C, Matsuda H, Tewtrakul S, Tansakul P, Nakamura S, Nomura Y, Yoshikawa M. Suppressive effects of methoxyflavonoids isolated from Kaempferia parviflora on inducible nitric oxide synthase (iNOS) expression in RAW 264.7 cells. JOURNAL OF ETHNOPHARMACOLOGY 2011; 136:488-495. [PMID: 21251970 DOI: 10.1016/j.jep.2011.01.013] [Citation(s) in RCA: 64] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/10/2010] [Revised: 12/03/2010] [Accepted: 01/10/2011] [Indexed: 05/30/2023]
Abstract
ETHNOPHARMACOLOGICAL RELEVANCE The rhizomes of Kaempferia parviflora Wall. ex Baker have been traditionally used in Thailand to treat abscesses, gout, and peptic ulcers. AIM Previously, we reported that the chloroform fraction of a Kaempferia parviflora extract had an inhibitory effect on rat paw-edema. In the present study, we isolated the constituents of this fraction and investigated the anti-inflammatory mechanism against nitric oxide (NO) production, tumor necrosis factor-α (TNF-α) and the expression of inducible nitric oxide synthase (iNOS) as well as phosphorylated extracellular signal-regulated kinase (p-ERK), and phosphorylated c-Jun N-terminal kinase (p-JNK). In addition, effects of trimethylapigenin (4) on the enzyme activities of protein kinases possibly leading to iNOS expression were examined to clarify the targets. MATERIALS AND METHODS The chloroform fraction was isolated using silica gel column chromatography and HPLC. Isolated compounds were tested against NO and TNF-α using RAW264.7 cells. Cytotoxicity and iNOS, p-ERK and p-JNK expression were also examined. RESULTS Three active components, 5,7-dimethoxyflavone (2), trimethylapigenin (4), and tetramethylluteolin (5), markedly inhibited the production of NO in lipopolysaccharide (LPS)-activated RAW264.7 cells. Compounds 2, 4, and 5 moderately inhibited production of TNF-α. Compounds 2, 4, and 5 strongly inhibited expression of iNOS mRNA and iNOS protein in a dose-dependent manner, but did not inhibit p-ERK or p-JNK protein expression. The most active compound, 4, did not inhibit the enzyme activity of inhibitor of κB kinases or mitogen-activated protein kinases, but inhibited that of spleen tyrosine kinase (SYK). CONCLUSION The mechanism responsible for the anti-inflammatory activity of methoxyflavonoids from the chloroform fraction of the rhizomes of Kaempferia parviflora is mainly the inhibition of iNOS expression, and the inhibition of SYK by 4 may be involved in the suppression of LPS-induced signaling in macrophages.
Collapse
Affiliation(s)
- Chutha Sae-Wong
- Faculty of Pharmaceutical Sciences, Prince of Songkla University, Songkhla, Thailand
| | | | | | | | | | | | | |
Collapse
|
64
|
|
65
|
Kaewkroek K, Wattanapiromsakul C, Tewtrakul S. Anti-inflammatory Mechanisms of Compounds from Curcuma Mangga Rhizomes using RAW264.7 Macrophage Cells. Nat Prod Commun 2010. [DOI: 10.1177/1934578x1000501006] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
Abstract
Curcuma mangga extract and its compounds were investigated for their anti-inflammatory mechanisms against nitric oxide (NO) and prostaglandin E2 (PGE2) release using RAW 264.7 cells. From bioassay-guided fractionation, demethoxycurcumin (1) was isolated from the chloroform fraction, whereas 15,16 bisnorlabda-8(17), 11-dien-13-one (2) and ( E)-15,15-diethoxylabda-8(17),12-dien-16-al (3) were from the n-hexane fraction. Bisdemethoxycurcumin (4), the structure of which is similar to that of 1, was also tested. Of the tested compounds, 3 exhibited the highest activity against NO release with an IC50 value of 9.4 μM, followed by 1 (IC50 = 12.1 μM), 4 (IC50 = 16.9 μM) and 2 (IC50 = 30.3 μM). For the effect on PGE2 release, 1 possessed the highest activity (IC50 = 4.5 μM, followed by 4 (IC50 = 5.6 μM), 3 (IC50 = 35.3 μM) and 2 (IC50 = 42.5 μM). The mechanism at transcriptional level revealed that 1, 3 and 4 down-regulated the mRNA expressions of iNOS and COX-2 in a dose-dependent manner, whereas 2 had an effect only on iNOS mRNA. These results indicate that C. mangga and its compounds do exert anti-inflammatory activity. Moreover, this is the first report of the isolation of 3 from C. mangga rhizomes.
Collapse
Affiliation(s)
- Kanidta Kaewkroek
- Department of Pharmacognosy and Pharmaceutical Botany, Faculty of Pharmaceutical Sciences Prince of Songkla University, Hat-Yai, Songkhla 90112, Thailand
| | - Chatchai Wattanapiromsakul
- Department of Pharmacognosy and Pharmaceutical Botany, Faculty of Pharmaceutical Sciences Prince of Songkla University, Hat-Yai, Songkhla 90112, Thailand
| | - Supinya Tewtrakul
- Department of Pharmacognosy and Pharmaceutical Botany, Faculty of Pharmaceutical Sciences Prince of Songkla University, Hat-Yai, Songkhla 90112, Thailand
| |
Collapse
|
66
|
Davicino R, Mattar A, Casali Y, Anesini C, Micalizzi B. Different activities ofSchinus areiraL.: anti-inflammatory or pro-inflammatory effect. Immunopharmacol Immunotoxicol 2010; 32:620-7. [DOI: 10.3109/08923971003657305] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
|