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Zhou Q, Li X, Wang X, Shi D, Zhang S, Yin Y, Zhang H, Liu B, Song N, Zhang Y. Vanillic Acid as a Promising Xanthine Oxidase Inhibitor: Extraction from Amomum villosum Lour and Biocompatibility Improvement via Extract Nanoemulsion. Foods 2022; 11:foods11070968. [PMID: 35407055 PMCID: PMC8997653 DOI: 10.3390/foods11070968] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2022] [Revised: 03/24/2022] [Accepted: 03/25/2022] [Indexed: 02/05/2023] Open
Abstract
Gout is an oxidative stress-related disease. Food-derived vanillic acid, a promising xanthine oxidase inhibitor, could potentially be used as a safe, supportive, and therapeutic product for gout. The extraction of vanillic acid from a classic Chinese herbal plant Amomum villosum with ethanol was investigated in the study. The optimum conditions were determined as extraction time of 74 min, extraction temperature of 48.36 °C, and a solid-to-liquid ratio of 1:35 g·mL−1 using the Box–Behnken design (BBD) of response surface methodology (RSM). The experimental extraction yield of 9.276 mg·g−1 matched with the theoretical value of 9.272 ± 0.011 mg·g−1 predicted by the model. The vanillic acid in Amomum villosum was determined to be 0.5450 mg·g−1 by high-performance liquid chromatography–diode array detection (HPLC–DAD) under the optimum extraction conditions and exhibited xanthine oxidase (XO) inhibitory activity, with the half-maximal inhibitory concentration (IC50) of 1.762 mg·mL−1. The nanoemulsion of Amomum villosum extract consists of 49.97% distilled water, 35.09% Smix (mixture of tween 80 and 95% ethanol with 2:1 ratio), and 14.94% n-octanol, with a particle size of 110.3 ± 1.9 nm. The nanoemulsion of Amomum villosum extract exhibited markable XO inhibitory activity, with an inhibition rate of 58.71%. The result demonstrated the potential benefit of Amomum villosum as an important dietary source of xanthine oxidase inhibitors for gout.
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Affiliation(s)
- Qian Zhou
- Key Laboratory of Dairy Science, Ministry of Education, Northeast Agricultural University, Harbin 150030, China; (Q.Z.); (X.L.); (X.W.); (S.Z.); (Y.Y.); (H.Z.); (B.L.); (N.S.)
- Department of Food Science, Northeast Agricultural University, Harbin 150030, China
| | - Xiaoyan Li
- Key Laboratory of Dairy Science, Ministry of Education, Northeast Agricultural University, Harbin 150030, China; (Q.Z.); (X.L.); (X.W.); (S.Z.); (Y.Y.); (H.Z.); (B.L.); (N.S.)
- Department of Food Science, Northeast Agricultural University, Harbin 150030, China
| | - Xiaohui Wang
- Key Laboratory of Dairy Science, Ministry of Education, Northeast Agricultural University, Harbin 150030, China; (Q.Z.); (X.L.); (X.W.); (S.Z.); (Y.Y.); (H.Z.); (B.L.); (N.S.)
- Department of Food Science, Northeast Agricultural University, Harbin 150030, China
| | - Dongdong Shi
- Feed Research Institute, Chinese Academy of Agricultural Sciences, Beijing 100081, China;
| | - Shengao Zhang
- Key Laboratory of Dairy Science, Ministry of Education, Northeast Agricultural University, Harbin 150030, China; (Q.Z.); (X.L.); (X.W.); (S.Z.); (Y.Y.); (H.Z.); (B.L.); (N.S.)
- Department of Food Science, Northeast Agricultural University, Harbin 150030, China
| | - Yuqi Yin
- Key Laboratory of Dairy Science, Ministry of Education, Northeast Agricultural University, Harbin 150030, China; (Q.Z.); (X.L.); (X.W.); (S.Z.); (Y.Y.); (H.Z.); (B.L.); (N.S.)
- Department of Food Science, Northeast Agricultural University, Harbin 150030, China
| | - Hanlin Zhang
- Key Laboratory of Dairy Science, Ministry of Education, Northeast Agricultural University, Harbin 150030, China; (Q.Z.); (X.L.); (X.W.); (S.Z.); (Y.Y.); (H.Z.); (B.L.); (N.S.)
- Department of Food Science, Northeast Agricultural University, Harbin 150030, China
| | - Bohao Liu
- Key Laboratory of Dairy Science, Ministry of Education, Northeast Agricultural University, Harbin 150030, China; (Q.Z.); (X.L.); (X.W.); (S.Z.); (Y.Y.); (H.Z.); (B.L.); (N.S.)
- Department of Food Science, Northeast Agricultural University, Harbin 150030, China
| | - Nannan Song
- Key Laboratory of Dairy Science, Ministry of Education, Northeast Agricultural University, Harbin 150030, China; (Q.Z.); (X.L.); (X.W.); (S.Z.); (Y.Y.); (H.Z.); (B.L.); (N.S.)
- Department of Food Science, Northeast Agricultural University, Harbin 150030, China
| | - Yinghua Zhang
- Key Laboratory of Dairy Science, Ministry of Education, Northeast Agricultural University, Harbin 150030, China; (Q.Z.); (X.L.); (X.W.); (S.Z.); (Y.Y.); (H.Z.); (B.L.); (N.S.)
- Department of Food Science, Northeast Agricultural University, Harbin 150030, China
- Correspondence:
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Sadeghi Z, Yang JL, Venditti A, Moridi Farimani M. A review of the phytochemistry, ethnopharmacology and biological activities of Teucrium genus (Germander). Nat Prod Res 2022; 36:5647-5664. [PMID: 34986708 DOI: 10.1080/14786419.2021.2022669] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Teucrium L (Lamiaceae) is mainly distributed in the Mediterranean area. A comprehensive survey in the electronic databases (during 2000-2020 years) with keywords of 'Teucrium' and 'Germander' showed that chemical analyses are available for 27 species, with sesquiterpenoids, iridoids, di and triterpenoids, and phenolic compounds as identified structures. The neo-clerodane diterpenoids as potential chemotaxonomic markers were the main compounds of this genus. As a result, Italy and Turkey have good attempts at phytochemical analysis. The pharmacological activities of different species including antioxidant, cytotoxic activity, antidiabetic, antimicrobial, anti-inflammatory and anti-insect have been summarized. Teucrium polium and Teucrium chamaedrys mainly have been used in digestive problems and diabetes in traditional medicine. Evidence-based clinical trials are needed to confirm the therapeutic properties of this genus. As well to the popularity of Asian and Anatolian species as ingredients in contemporary medicines and products, further research is required in comparison to European species.
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Affiliation(s)
- Zahra Sadeghi
- Department of Production and Utilization of Medicinal Plants, Faculty of Agricultural and Natural Resources, Higher Educational Complex of Saravan, Sistan and Baluchestan, Iran
| | - Jun-Li Yang
- CAS Key Laboratory of Chemistry of Northwestern Plant Resources and Key Laboratory for Natural Medicine of Gansu Province, Lanzhou Institute of Chemical Physics (LICP), Chinese Academy of Sciences (CAS), Lanzhou, 730000, PR China
| | | | - Mahdi Moridi Farimani
- Department of Phytochemistry, Medicinal Plants and Drugs Research Institute, Shahid Beheshti University, Evin, Tehran, Iran
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Viridicatol Isolated from Deep-Sea Penicillium Griseofulvum Alleviates Anaphylaxis and Repairs the Intestinal Barrier in Mice by Suppressing Mast Cell Activation. Mar Drugs 2020; 18:md18100517. [PMID: 33081290 PMCID: PMC7590054 DOI: 10.3390/md18100517] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/18/2020] [Revised: 10/12/2020] [Accepted: 10/14/2020] [Indexed: 12/17/2022] Open
Abstract
Viridicatol is a quinoline alkaloid isolated from the deep-sea-derived fungus Penicillium griseofulvum. The structure of viridicatol was unambiguously established by X-ray diffraction analysis. In this study, a mouse model of ovalbumin-induced food allergy and the rat basophil leukemia (RBL)-2H3 cell model were established to explore the anti-allergic properties of viridicatol. On the basis of the mouse model, we found viridicatol to alleviate the allergy symptoms; decrease the levels of specific immunoglobulin E, mast cell protease-1, histamine, and tumor necrosis factor-α; and promote the production of interleukin-10 in the serum. The treatment of viridicatol also downregulated the population of B cells and mast cells (MCs), as well as upregulated the population of regulatory T cells in the spleen. Moreover, viridicatol alleviated intestinal villi injury and inhibited the degranulation of intestinal MCs to promote intestinal barrier repair in mice. Furthermore, the accumulation of Ca2+ in RBL-2H3 cells was significantly suppressed by viridicatol, which could block the activation of MCs. Taken together, these data indicated that deep-sea viridicatol may represent a novel therapeutic for allergic diseases.
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Sim LY, Abd Rani NZ, Husain K. Lamiaceae: An Insight on Their Anti-Allergic Potential and Its Mechanisms of Action. Front Pharmacol 2019; 10:677. [PMID: 31275149 PMCID: PMC6594199 DOI: 10.3389/fphar.2019.00677] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2019] [Accepted: 05/24/2019] [Indexed: 12/21/2022] Open
Abstract
The prevalence of allergic diseases such as asthma, allergic rhinitis, food allergy and atopic dermatitis has increased dramatically in recent decades. Conventional therapies for allergy can induce undesirable effects and hence patients tend to seek alternative therapies like natural compounds. Considering the fact above, there is an urgency to discover potential medicinal plants as future candidates in the development of novel anti-allergic therapeutic agents. The Lamiaceae family, or mint family, is a diverse plant family which encompasses more than 7,000 species and with a cosmopolitan distribution. A number of species from this family has been widely employed as ethnomedicine against allergic inflammatory skin diseases and allergic asthma in traditional practices. Phytochemical analysis of the Lamiaceae family has reported the presence of flavonoids, flavones, flavanones, flavonoid glycosides, monoterpenes, diterpenes, triterpenoids, essential oil and fatty acids. Numerous investigations have highlighted the anti-allergic activities of Lamiaceae species with their active principles and crude extracts. Henceforth, this review has the ultimate aim of compiling the up-to-date (2018) findings of published scientific information about the anti-allergic activities of Lamiaceae species. In addition, the botanical features, medicinal uses, chemical constituents and toxicological studies of Lamiaceae species were also documented. The method employed for data collection in this review was mainly the exploration of the PubMed, Ovid and Scopus databases. Additional research studies were obtained from the reference lists of retrieved articles. This comprehensive summarization serves as a useful resource for a better understanding of Lamiaceae species. The anti-allergic mechanisms related to Lamiaceae species are also reviewed extensively which aids in future exploration of the anti-allergic potential of Lamiaceae species.
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Affiliation(s)
- Lee Yen Sim
- Drug and Herbal Research Centre, Faculty of Pharmacy, Universiti Kebangsaan Malaysia, Kuala Lumpur, Malaysia
| | - Nur Zahirah Abd Rani
- Drug and Herbal Research Centre, Faculty of Pharmacy, Universiti Kebangsaan Malaysia, Kuala Lumpur, Malaysia
| | - Khairana Husain
- Drug and Herbal Research Centre, Faculty of Pharmacy, Universiti Kebangsaan Malaysia, Kuala Lumpur, Malaysia
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Ghazouani N, Abderrabba M, Bouajila J. Teucrium ramosissimum (Lamiaceae): Volatile Composition, Seasonal Variation, and Pharmaceutical Activity. ANAL LETT 2015. [DOI: 10.1080/00032719.2015.1082134] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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Kim HH, Yoo JS, Shin TY, Kim SH. Aqueous extract of Mosla chinensis inhibits mast cell-mediated allergic inflammation. THE AMERICAN JOURNAL OF CHINESE MEDICINE 2013; 40:1257-70. [PMID: 23227796 DOI: 10.1142/s0192415x12500930] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
Abstract
Allergic inflammatory diseases such as food allergy, asthma, sinusitis, and atopic dermatitis are increasing worldwide. In this study, we investigated the effects of aqueous extract of Mosla chinensis Max. (AMC) on mast cell-mediated allergic inflammation and studied the possible mechanism of this action. AMC inhibited compound 48/80-induced systemic and immunoglobulin E (IgE)-mediated local anaphylaxis. AMC reduced intracellular calcium levels and downstream histamine release from rat peritoneal mast cells activated by compound 48/80 or IgE. In addition, AMC decreased gene expression and secretion of proinflammatory cytokines such as tumor necrosis factor (TNF)-α, interleukin (IL)-6 and IL-8 in human mast cells. The inhibitory effect of AMC on cytokine expression was nuclear factor (NF)-κB dependent. Our results indicate that AMC inhibits mast cell-mediated allergic inflammatory reaction by suppressing histamine release and expression of proinflammatory cytokines and the involvement of calcium and NF-κB in these effects. AMC might be a possible therapeutic candidate for allergic inflammatory disorders.
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Affiliation(s)
- Hui-Hun Kim
- CMRI, Department of Pharmacology, School of Medicine, Kyungpook National University, Daegu 700-422, Republic of Korea
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Ko YJ, Kim HH, Kim EJ, Katakura Y, Lee WS, Kim GS, Ryu CH. Piceatannol inhibits mast cell-mediated allergic inflammation. Int J Mol Med 2013; 31:951-8. [PMID: 23426871 DOI: 10.3892/ijmm.2013.1283] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/23/2012] [Accepted: 01/15/2013] [Indexed: 11/05/2022] Open
Abstract
Piceatannol is a phenolic stilbenoid and a metabolite of resveratrol which is found in red wine. Piceatannol (PIC) commonly exhibits anti-inflammatory, antiplatelet and antiproliferative activity. In the present study, the anti-allergic and anti-inflammatory mechanisms of PIC were investigated by examining the effects of PIC on pro‑inflammatory cytokine release and phosphorylation of mitogen-activated protein (MAP) kinases (ERK, JNK and p38) in a human mast cell line. PIC dose-dependently inhibited compound 48/80-induced systemic anaphylaxis and immunoglobulin E-mediated local allergic reactions. PIC reduced the immunoglobulin E (IgE)-mediated local allergic reaction and attenuated histamine release from rat peritoneal mast cells. Histamine and β-hexosaminidase release was markedly decreased dose-dependently by PIC treatment in RBL-2H3 cells. PIC treatments of HMC-1 cells definitely reduced mRNA expression and the release of the pro‑inflammatory cytokines, tumor necrosis factor-α and interleukin-8. MAP kinase phosphorylation was also strongly decreased dose-dependently following PIC treatment. PIC regulated the production of cytokines and histamine in phorbol 12-myristate 13-acetate plus A23187-stimulated mast cells. Thus, PIC may alleviate allergic inflammation and may be a useful therapeutic agent for allergic diseases.
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Affiliation(s)
- Yu-Jin Ko
- Division of Applied Life Sciences (BK 21 Program), Institute of Agriculture and Life Sciences, Gyeongsang National University, Jinju 660-701, Republic of Korea
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Qin HD, Liu ZH, Liu ZP. A modified RBL-2H3 mediator release assay for the detection of polyclonal IgE antibody. Toxicol Mech Methods 2011; 22:105-10. [PMID: 22149966 DOI: 10.3109/15376516.2011.599884] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Abstract
RBL-2H3 mediator release assay, developed for specific IgE screening studies, was not as sensitive as passive cutaneous anaphylaxis (PCA) assay in the polyclonal antibody detection. In the present investigation, the detection sensitivity of RBL-2H3 assay was elevated by modifying the experiment protocols from choosing the proper releasing medium and optimizing the sensitization manner. The polyclonal antibody was generated from Brown Norway (BN) rats exposed to Ovalbumin (OVA). In contrast to Tyrode buffer A, RBL-2H3 cells cultured in DMEM had a lower spontaneous secretion and a higher response to antigen stimulation, both of which could help to increase the detection sensitivity. The rat sera used in the sensitization process should be diluted appropriately to avoid the proliferation-promoting effect on RBL-2H3 cells. The results of the kinetics of sensitization showed that prolonging the sensitization time and then reculturing the cells in IgE free medium for a further 24 h after the removal of rat sera could reach a marked increase in the degree of sensitization. The highest anti-OVA antibody titer detected by the modified RBL-2H3 assay was 4096, while PCA assay was 1024. These data provide evidence that the modified RBL-2H3 mediator release assay has a promising prospect in the determination of the biologic activity of polyclonal antibody.
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Affiliation(s)
- Hui-Di Qin
- Center for New Drugs Evaluation, Shandong University, Jinan, PR China.
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Vo TS, Kim JA, Wijesekara I, Kong CS, Kim SK. Potent effect of brown algae (Ishige okamurae) on suppression of allergic inflammation in human basophilic KU812F cells. Food Sci Biotechnol 2011. [DOI: 10.1007/s10068-011-0169-4] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023] Open
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Shin TY, Kim SH. Meoruh wine suppresses mast cell-mediated allergic inflammation. Immunopharmacol Immunotoxicol 2010; 33:271-8. [PMID: 20626232 DOI: 10.3109/08923973.2010.500293] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Abstract
In this study, we investigated the effect of the Meoruh wine (MW), a Korean traditional wine made by the fruits of Vitis amurensis Rupr. (Vitaceae) on the mast cell-mediated allergic inflammation and studied the possible mechanism of action. Mast cell-mediated allergic disease is involved in many diseases such as anaphylaxis, rhinitis, asthma, and atopic dermatitis. MW inhibited compound 48/80-induced systemic anaphylaxis and serum histamine release in a dose-dependent manner in mice. MW decreased immunoglobulin E-mediated local allergic reactions, passive cutaneous anaphylaxis. MW dose-dependently reduced histamine release from human mast cells activated by phorbol 12-myristate 13-acetate and calcium ionophore A23187 (PMACI). The inhibitory effect of MW on histamine release was mediated by suppression of intracellular calcium. In addition, MW attenuated the PMACI-stimulated expression of pro-inflammatory cytokines such as tumor necrosis factor-α, interleukin-1β (IL-1β), IL-6, and IL-8 in human mast cells. The inhibitory effect of MW on these pro-inflammatory cytokines was nuclear factor (NF)-κB dependent. Our findings provide evidence that MW inhibits mast cell-derived allergic inflammatory reactions and involvement of calcium, pro-inflammatory cytokines and NF-κB in these effects.
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Affiliation(s)
- Tae-Yong Shin
- College of Pharmacy, Woosuk University, Jeonju, South Korea
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Shin TY, Park SB, Yoo JS, Kim IK, Lee HS, Kwon TK, Kim MK, Kim JC, Kim SH. Anti-allergic inflammatory activity of the fruit of Prunus persica: role of calcium and NF-kappaB. Food Chem Toxicol 2010; 48:2797-802. [PMID: 20633593 DOI: 10.1016/j.fct.2010.07.009] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/05/2010] [Revised: 06/30/2010] [Accepted: 07/07/2010] [Indexed: 02/04/2023]
Abstract
Mast cell-mediated allergic symptoms are involved in many diseases, such as asthma and sinusitis. In this study, we investigated the effect of ethanol extract of fruits of Prunus persica (L) Batsch (FPP) on the mast cell-mediated allergic inflammation and studied the possible mechanism of action. FPP dose-dependently inhibited compound 48/80-induced systemic anaphylaxis and immunoglobulin E-mediated local allergic reactions. Histamine releasing from mast cells was reduced by FPP, which was mediated by modulation of intracellular calcium. In addition, FPP attenuated the phorbol 12-myristate 13-acetate and calcium ionophore A23187 (PMACI)-stimulated expression and secretion of pro-inflammatory cytokines in human mast cells. The inhibitory effect of FPP on pro-inflammatory cytokines was nuclear factor (NF)-kappaB dependent. Our findings provide evidence that FPP inhibits mast cell-derived allergic inflammation and involvement of calcium and NF-kappaB in these effects.
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Affiliation(s)
- Tae-Yong Shin
- College of Pharmacy, Woosuk University, Jeonju 565-701, Republic of Korea
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Park SB, Kim SH, Suk K, Lee HS, Kwon TK, Ju MG, Jeon H, Kim DK, Lim JP, Shin TY. Clinopodium gracile inhibits mast cell-mediated allergic inflammation: involvement of calcium and nuclear factor-kappaB. Exp Biol Med (Maywood) 2010; 235:606-13. [PMID: 20463301 DOI: 10.1258/ebm.2010.009292] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Abstract
Mast cell-mediated allergic disease is involved in many diseases such as anaphylaxis, rhinitis, asthma and atopic dermatitis. The discovery of drugs for the treatment of allergic disease is an important subject in human health. In this study, we investigated the effect of the water extract of Clinopodium gracile Matsum var. multicaule (WECG) on the mast cell-mediated allergic inflammation and studied the possible mechanism of action. WECG inhibited compound 48/80-induced systemic anaphylaxis and immunoglobulin E-mediated cutaneous anaphylaxis in a dose-dependent manner. WECG dose-dependently reduced histamine release from rat peritoneal mast cells and human mast cells. The inhibitory effect of WECG on histamine release was mediated by the modulation of intracellular calcium. In addition, WECG attenuated the phorbol 12-myristate 13-acetate and calcium ionophore A23187-stimulated gene expression and secretion of proinflammatory cytokines such as tumor necrosis factor-alpha and interleukin-6 in human mast cells. The inhibitory effect of WECG on these proinflammatory cytokines was nuclear factor-kappaB (NF-kappaB) dependent. Our findings provide evidence that WECG inhibits mast cell-derived allergic inflammation and involvement of calcium and NF-kappaB in these effects.
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Affiliation(s)
- Seung-Bin Park
- CMRI, Department of Pharmacology, School of Medicine, Kyungpook National University Medical School, Daegu 700-422, South Korea
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Henchiri H, Bodo B, Deville A, Dubost L, Zourgui L, Raies A, Grellier P, Mambu L. Sesquiterpenoids from Teucrium ramosissimum. PHYTOCHEMISTRY 2009; 70:1435-1441. [PMID: 19766274 DOI: 10.1016/j.phytochem.2009.08.012] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/17/2009] [Revised: 08/14/2009] [Accepted: 08/18/2009] [Indexed: 05/28/2023]
Abstract
An antiplasmodial bioguided investigation of the EtOAc extract of the aerial parts of Teucrium ramosissimum led to isolation and identification of three sesquiterpenoids, teucmosin, 4alpha-hydroxy-homalomenol C, 1beta,4beta,7alpha-trihydroxy-8,9-eudesmene and two trinorsesquiterpenoids, 4beta-hydroxy-11,12,13-trinor-5-eudesmen-1,7-dione and 1beta,4beta-dihydroxy-11,12,13-trinor-8,9-eudesmen-7-one together with five known sesquiterpenoids, oplopanone, homalomenol C, oxo-T-cadinol, 1beta,4beta,6beta-trihydroxyeudesmane, 1beta,4beta,7alpha-trihydroxyeudesmane and four flavonoids, 5-hydroxy-7,4'-dimethoxyflavone, salvigenin, genkwanin and cirsimaritin. The structures and the relative stereochemistry were elucidated by extensive spectroscopic studies including 1D and 2D NMR and mass spectrometry (MS). Homalomenol C, 4beta-hydroxy-11,12,13-trinor-5-eudesmen-1,7-dione, oxo-T-cadinol and 1beta,4beta,6beta-trihydroxyeudesmane displayed a significant in vitro antiplasmodial activity against Plasmodium falciparum with IC(50) values ranging from 1.2 to 5.0 microg/ml. Furthermore, no cytotoxicity was observed upon the human diploid lung cell line MRC-5 for these compounds.
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Affiliation(s)
- Hichem Henchiri
- FRE 3206 CNRS Molécules de Communication et Adaptation des Micro-organismes, Muséum National d'Histoire Naturelle, 61-63 rue Buffon, 75005 Paris, France
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