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Liu F, Yang X, Liang Y, Dong B, Su G, Tuerhong M, Jin DQ, Xu J, Guo Y. Daphnane diterpenoids with nitric oxide inhibitory activities and interactions with iNOS from the leaves of Trigonostemon thyrsoideus. PHYTOCHEMISTRY 2018; 147:57-67. [PMID: 29289737 DOI: 10.1016/j.phytochem.2017.12.010] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/07/2017] [Revised: 11/18/2017] [Accepted: 12/14/2017] [Indexed: 06/07/2023]
Abstract
A phytochemical investigation to search for new nitric oxide (NO) inhibitors resulted in the isolation of seven previously undescribed daphnane diterpenoids, thyrsoidpenes A-G, from the leaves of Trigonostemon thyrsoideus. Their structures including absolute configurations were elucidated on the basis of extensive NMR spectroscopic data analysis and the time-dependent density functional theory (TDDFT) electronic circular dichroism (ECD) calculations. Thyrsoidpenes B-G feature rare polycyclic caged structures of daphnane diterpenoid orthoester. The NO inhibitory effects were examined and all of the compounds showed inhibitory activities toward LPS-induced NO production in murine microglial BV-2 cells. The possible mechanism of NO inhibition of some bioactive compounds was also investigated using molecular docking, which revealed the interactions of bioactive compounds with the iNOS protein.
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Affiliation(s)
- Feng Liu
- State Key Laboratory of Medicinal Chemical Biology, College of Pharmacy, Tianjin Key Laboratory of Molecular Drug Research, Nankai University, Tianjin 300350, People's Republic of China
| | - Xueyuan Yang
- State Key Laboratory of Medicinal Chemical Biology, College of Pharmacy, Tianjin Key Laboratory of Molecular Drug Research, Nankai University, Tianjin 300350, People's Republic of China
| | - Yue Liang
- State Key Laboratory of Medicinal Chemical Biology, College of Pharmacy, Tianjin Key Laboratory of Molecular Drug Research, Nankai University, Tianjin 300350, People's Republic of China
| | - Bangjian Dong
- State Key Laboratory of Medicinal Chemical Biology, College of Pharmacy, Tianjin Key Laboratory of Molecular Drug Research, Nankai University, Tianjin 300350, People's Republic of China
| | - Guochen Su
- State Key Laboratory of Medicinal Chemical Biology, College of Pharmacy, Tianjin Key Laboratory of Molecular Drug Research, Nankai University, Tianjin 300350, People's Republic of China
| | - Muhetaer Tuerhong
- College of Chemistry and Environmental Sciences, Laboratory of Xinjiang Native Medicinal and Edible Plant Resources Chemistry, Kashgar University, Kashgar 844000, People's Republic of China
| | - Da-Qing Jin
- School of Medicine, Nankai University, Tianjin 300071, People's Republic of China
| | - Jing Xu
- State Key Laboratory of Medicinal Chemical Biology, College of Pharmacy, Tianjin Key Laboratory of Molecular Drug Research, Nankai University, Tianjin 300350, People's Republic of China.
| | - Yuanqiang Guo
- State Key Laboratory of Medicinal Chemical Biology, College of Pharmacy, Tianjin Key Laboratory of Molecular Drug Research, Nankai University, Tianjin 300350, People's Republic of China.
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Alejo-Armijo A, Altarejos J, Salido S. Phytochemicals and Biological Activities of Laurel Tree (Laurus nobilis). Nat Prod Commun 2017. [DOI: 10.1177/1934578x1701200519] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/08/2022] Open
Abstract
This review summarizes the chemical composition reported up to date on Laurus nobilis L. (Lauraceae), an evergreen shrub or tree cultivated for its aromatic leaves and ornamental interest. It has been focused on non-volatile phytochemicals such as sesquiterpene lactones, flavonoids and proanthocyanidins, among others. Moreover, biological activities of laurel extracts and pure compounds have also been reviewed.
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Affiliation(s)
- Alfonso Alejo-Armijo
- Departamento de Química Inorgánica y Orgánica, Universidad de Jaén, Campus ceiA3, 23071 Jaén, Spain
| | - Joaquín Altarejos
- Departamento de Química Inorgánica y Orgánica, Universidad de Jaén, Campus ceiA3, 23071 Jaén, Spain
| | - Sofía Salido
- Departamento de Química Inorgánica y Orgánica, Universidad de Jaén, Campus ceiA3, 23071 Jaén, Spain
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Xu J, Sun X, Kang J, Liu F, Wang P, Ma J, Zhou H, Jin DQ, Ohizumi Y, Lee D, Bartlam M, Guo Y. Chemical and biological profiles of Tussilago farfara: Structures, nitric oxide inhibitory activities, and interactions with iNOS protein. J Funct Foods 2017. [DOI: 10.1016/j.jff.2017.02.013] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022] Open
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Mazzio EA, Li N, Bauer D, Mendonca P, Taka E, Darb M, Thomas L, Williams H, Soliman KFA. Natural product HTP screening for antibacterial (E.coli 0157:H7) and anti-inflammatory agents in (LPS from E. coli O111:B4) activated macrophages and microglial cells; focus on sepsis. BMC COMPLEMENTARY AND ALTERNATIVE MEDICINE 2016; 16:467. [PMID: 27846826 PMCID: PMC5111180 DOI: 10.1186/s12906-016-1429-x] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/24/2016] [Accepted: 10/29/2016] [Indexed: 11/13/2022]
Abstract
Background Acute systemic inflammatory response syndrome arising from infection can lead to multiple organ failure and death, with greater susceptibility occurring in immunocompromised individuals. Moreover, sub-acute chronic inflammation is a contributor to the pathology of diverse degenerative diseases (Parkinson’s disease, Alzheimer’s disease and arthritis). Given the known limitations in Western medicine to treat a broad range of inflammatory related illness as well as the emergence of antibiotic resistance, there is a renewed interest in complementary and alternative medicines (CAMs) to achieve these means. Methods A high throughput (HTP) screening of >1400 commonly sold natural products (bulk herbs, cooking spices, teas, leaves, supplement components, nutraceutical food components, fruit and vegetables, rinds, seeds, polyphenolics etc.) was conducted to elucidate anti-inflammatory substances in lipopolysaccharide (LPS) (E. coli serotype O111:B4) monocytes: RAW 264.7 macrophages [peripheral], BV-2 microglia [brain]) relative to hydrocortisone, dexamethasone and L-N6-(1Iminoethyl)lysine (L-NIL). HTP evaluation was also carried out for lethal kill curves against E.coli 0157:H7 1x106 CFU/mL relative to penicillin. Validation studies were performed to assess cytokine profiling using antibody arrays. Findings were corroborated by independent ELISAs and NO2–/iNOS expression quantified using the Griess Reagent and immunocytochemistry, respectively. For robust screening, we developed an in-vitro efficacy paradigm to ensure anti-inflammatory parameters were observed independent of cytotoxicity. This caution was taken given that many plants exert tumoricidal and anti-inflammatory effects at close range through similar signaling pathways, which could lead to false positives. Results The data show that activated BV-2 microglia cells (+ LPS 1μg/ml) release >10-fold greater IL-6, MIP1/2, RANTES and nitric oxide (NO2–), where RAW 264.7 macrophages (+ LPS 1μg/ml) produced > 10-fold rise in sTNFR2, MCP-1, IL-6, GCSF, RANTES and NO2–. Data validation studies establish hydrocortisone and dexamethasone as suppressing multiple pro-inflammatory processes, where L-NIL suppressed NO2–, but had no effect on iNOS expression or IL-6. The screening results demonstrate relative few valid hits with anti-inflammatory effects at < 250μg/ml for the following: Bay Leaf (Laurus nobilis), Elecampagne Root (Inula helenium), Tansy (Tanacetum vulgare),Yerba (Eriodictyon californicum) and Centipeda (Centipeda minima), Ashwagandha (Withania somnifera), Feverfew (Tanacetum parthenium), Rosemary (Rosmarinus officinalis), Turmeric Root (Curcuma Longa), Osha Root (Ligusticum porteri), Green Tea (Camellia sinensis) and constituents: cardamonin, apigenin, quercetin, biochanin A, eupatorin, (-)-epigallocatechin gallate (EGCG) and butein. Natural products lethal against [E. coli 0157:H7] where the LC50 < 100 μg/ml included bioactive silver hydrosol-Argentyn 23, green tea (its constituents EGCG > Polyphenon 60 > (-)-Gallocatechin > Epicatechin > (+)-Catechin), Grapeseed Extract (Vitis vinifera), Chinese Gallnut (its constituents gallic acid > caffeic acid) and gallic acid containing plants such as Babul Chall Bark (Acacia Arabica), Arjun (Terminalia Arjuna) and Bayberry Root Bark (Morella Cerifera). Conclusions These findings emphasize and validate the previous work of others and identify the most effective CAM anti-inflammatory, antibacterial compounds using these models. Future work will be required to evaluate potential combination strategies for long-term use to prevent chronic inflammation and possibly lower the risk of sepsis in immunocompromised at risk populations.
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Saeed MEM, Meyer M, Hussein A, Efferth T. Cytotoxicity of South-African medicinal plants towards sensitive and multidrug-resistant cancer cells. JOURNAL OF ETHNOPHARMACOLOGY 2016; 186:209-223. [PMID: 27058630 DOI: 10.1016/j.jep.2016.04.005] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/19/2016] [Revised: 04/03/2016] [Accepted: 04/04/2016] [Indexed: 06/05/2023]
Abstract
ETHNOPHARMACOLOGICAL RELEVANCE Traditional medicine plays a major role for primary health care worldwide. Cancer belongs to the leading disease burden in industrialized and developing countries. Successful cancer therapy is hampered by the development of resistance towards established anticancer drugs. AIM In the present study, we investigated the cytotoxicity of 29 extracts from 26 medicinal plants of South-Africa against leukemia cell lines, most of which are used traditionally to treat cancer and related symptoms. MATERIAL AND METHODS We have investigated the plant extracts for their cytotoxic activity towards drug-sensitive parental CCRF-CEM leukemia cells and their multidrug-resistant P-glycoprotein-overexpressing subline, CEM/ADR5000 by means of the resazurin assay. A panel of 60 NCI tumor cell lines have been investigated for correlations between selected phytochemicals from medicinal plants and the expression of resistance-conferring genes (ABC-transporters, oncogenes, tumor suppressor genes). RESULTS Seven extracts inhibited both cell lines (Acokanthera oppositifolia, Hypoestes aristata, Laurus nobilis, Leonotis leonurus, Plectranthus barbatus, Plectranthus ciliates, Salvia apiana). CEM/ADR5000 cells exhibited a low degree of cross-resistance (3.35-fold) towards the L. leonurus extract, while no cross-resistance was observed to other plant extracts, although CEM/ADR5000 cells were highly resistant to clinically established drugs. The log10IC50 values for two out of 14 selected phytochemicals from these plants (acovenoside A and ouabain) of 60 tumor cell lines were correlated to the expression of ABC-transporters (ABCB1, ABCB5, ABCC1, ABCG2), oncogenes (EGFR, RAS) and tumor suppressors (TP53). Sensitivity or resistance of the cell lines were not statistically associated with the expression of these genes, indicating that multidrug-resistant, refractory tumors expressing these genes may still respond to acovenoside A and ouabain. CONCLUSION The bioactivity of South African medicinal plants may represent a basis for the development of strategies to treat multidrug-resistant tumors either by phytotherapeutic approaches with whole plant preparations or by classical drug development with isolated compounds such as acovenoside A or ouabain.
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Affiliation(s)
- Mohamed E M Saeed
- Department of Pharmaceutical Biology, Institute of Pharmacy and Biochemistry, Johannes Gutenberg University, Mainz, Germany
| | - Marion Meyer
- Plant Science Department, University of Pretoria, 002 Pretoria, South Africa
| | - Ahmed Hussein
- Chemistry Department, University of Western Cape, Private Bag X17, Belleville 7535, South Africa
| | - Thomas Efferth
- Department of Pharmaceutical Biology, Institute of Pharmacy and Biochemistry, Johannes Gutenberg University, Mainz, Germany.
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Sesquiterpenoids from an edible plant Petasites japonicus and their promoting effects on neurite outgrowth. J Funct Foods 2016. [DOI: 10.1016/j.jff.2016.01.012] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023] Open
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Xie C, Wang H, Sun X, Meng L, Wang M, Bartlam M, Guo Y. Isolation, Characterization, and Antiproliferative Activities of Eudesmanolide Derivatives from the Flowers of Inula japonica. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2015; 63:9006-9011. [PMID: 26429144 DOI: 10.1021/acs.jafc.5b03075] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
Inula japonica belongs to the family Asteraceae, and its flowers have been used as dietary supplements and health tea in China. The study aimed to identify the bioactive components with the antiproliferative property. Ten 1,10-seco-eudesmanolide derivatives, including four new compounds (1-4), were isolated from the flowers of I. japonica. Their structures were established on the basis of the interpretation of spectroscopic data and electronic circular dichroism (ECD) calculations. All of these isolates were evaluated for their antiproliferative activities against MCF-7 and MDA-MB-231 human breast cancer cells. Compound 4 possessed the most potent effects, with the IC50 values of 0.20 ± 0.04 and 6.22 ± 1.30 μM against MCF-7 and MDA-MB-231 cells, respectively. The present investigation indicated that eudesmanolide derivatives from the flowers of I. japonica, especially compound 4, might be used as potential antitumor chemotherapy agent candidates.
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Affiliation(s)
- Chunfeng Xie
- State Key Laboratory of Medicinal Chemical Biology, College of Pharmacy and Tianjin Key Laboratory of Molecular Drug Research, Nankai University , Tianjin 300071, People's Republic of China
- State Key Laboratory of Bioactive Substance and Function of Natural Medicines, Institute of Materia Medica, Chinese Academy of Medical Sciences and Peking Union Medical College , Beijing 100050, People's Republic of China
| | - Hao Wang
- State Key Laboratory of Medicinal Chemical Biology, College of Pharmacy and Tianjin Key Laboratory of Molecular Drug Research, Nankai University , Tianjin 300071, People's Republic of China
| | - Xiaocong Sun
- State Key Laboratory of Medicinal Chemical Biology, College of Pharmacy and Tianjin Key Laboratory of Molecular Drug Research, Nankai University , Tianjin 300071, People's Republic of China
| | - Linghao Meng
- State Key Laboratory of Medicinal Chemical Biology, College of Pharmacy and Tianjin Key Laboratory of Molecular Drug Research, Nankai University , Tianjin 300071, People's Republic of China
| | - Meicheng Wang
- State Key Laboratory of Medicinal Chemical Biology, College of Pharmacy and Tianjin Key Laboratory of Molecular Drug Research, Nankai University , Tianjin 300071, People's Republic of China
| | - Mark Bartlam
- State Key Laboratory of Medicinal Chemical Biology and College of Life Sciences, Nankai University , Tianjin 300071, People's Republic of China
| | - Yuanqiang Guo
- State Key Laboratory of Medicinal Chemical Biology, College of Pharmacy and Tianjin Key Laboratory of Molecular Drug Research, Nankai University , Tianjin 300071, People's Republic of China
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Xu J, Kang J, Cao X, Sun X, Yu S, Zhang X, Sun H, Guo Y. Characterization of Diterpenes from Euphorbia prolifera and Their Antifungal Activities against Phytopathogenic Fungi. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2015; 63:5902-5910. [PMID: 26063581 DOI: 10.1021/acs.jafc.5b02021] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
Euphorbia prolifera is a poisonous plant belonging to the Euphorbiaceae family. In this survey on plant secondary metabolites to obtain bioactive substances for the development of new antifungal agents for agriculture, the chemical constituents of the plant E. prolifera were investigated. This procedure led to the isolation of six new and two known diterpenes. Their structures, including absolute configurations, were elucidated on the basis of extensive NMR spectroscopic data analyses and time-dependent density functional theory ECD calculations. Biological screenings revealed that these diterpenes possessed antifungal activities against three phytopathogenic fungi. The results of the phytochemical investigation further revealed the chemical components of the poisonous plant E. prolifera, and biological screenings implied the extract or bioactive diterpenes from this plant may be regarded as candidate agents of antifungal agrochemicals for crop protection products.
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Affiliation(s)
- Jing Xu
- †State Key Laboratory of Medicinal Chemical Biology and College of Pharmacy, Nankai University, Tianjin 300071, People's Republic of China
- ‡Tianjin Key Laboratory of Molecular Drug Research, Nankai University, Tianjin 300071, People's Republic of China
| | - Jing Kang
- §College of Pharmacy, Harbin University of Commerce, Harbin 150076, People's Republic of China
| | - Xiangrong Cao
- †State Key Laboratory of Medicinal Chemical Biology and College of Pharmacy, Nankai University, Tianjin 300071, People's Republic of China
- ‡Tianjin Key Laboratory of Molecular Drug Research, Nankai University, Tianjin 300071, People's Republic of China
| | - Xiaocong Sun
- †State Key Laboratory of Medicinal Chemical Biology and College of Pharmacy, Nankai University, Tianjin 300071, People's Republic of China
- ‡Tianjin Key Laboratory of Molecular Drug Research, Nankai University, Tianjin 300071, People's Republic of China
| | - Shujing Yu
- ⊥Research Institute of Elemento-Organic Chemistry, Nankai University, Tianjin 300071, People's Republic of China
| | - Xiao Zhang
- ⊥Research Institute of Elemento-Organic Chemistry, Nankai University, Tianjin 300071, People's Republic of China
| | - Hongwei Sun
- #Computational Centre for Molecular Science, College of Chemistry, Nankai University, Tianjin 300071, People's Republic of China
| | - Yuanqiang Guo
- †State Key Laboratory of Medicinal Chemical Biology and College of Pharmacy, Nankai University, Tianjin 300071, People's Republic of China
- ‡Tianjin Key Laboratory of Molecular Drug Research, Nankai University, Tianjin 300071, People's Republic of China
- §College of Pharmacy, Harbin University of Commerce, Harbin 150076, People's Republic of China
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Xu J, Ji F, Kang J, Wang H, Li S, Jin DQ, Zhang Q, Sun H, Guo Y. Absolute Configurations and NO Inhibitory Activities of Terpenoids from Curcuma longa. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2015; 63:5805-5812. [PMID: 26027687 DOI: 10.1021/acs.jafc.5b01584] [Citation(s) in RCA: 44] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
Curcuma longa L., belonging to the Zingiberaceae family, is a perennial herb and has been used as a spice and a pigment in the food industry. In the ongoing search for inhibitory reagents of NO production and survey of the chemical composition of natural vegetable foods, the chemical constituents of C. longa used as spice were investigated. This investigation resulted in the isolation of 2 new terpenoids and 14 known analogues. Their structures were established on the basis of the extensive analyses of 1D and 2D NMR spectroscopic data, and the absolute configurations of 1-4 were elucidated by comparison of the calculated and experimental ECD spectra. Among them, compound 1 is a rare norditerpene with an ent-labdane skeleton, and 2 is a skeletally novel sesquiterpene having an eight-membered ring. All of the compounds were found to possess NO inhibitory activities in murine microglial BV-2 cells. The discovery of two new compounds in this chemical investigation further disclosed the chemical composition of C. longa used a food spice, and the bioassay implied that the natural food spice C. longa, containing terpenoids with NO inhibitory activities, may be potentially promotive to human health.
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Affiliation(s)
- Jing Xu
- †State Key Laboratory of Medicinal Chemical Biology and College of Pharmacy, Nankai University, Tianjin 300071, People's Republic of China
- ‡Tianjin Key Laboratory of Molecular Drug Research, Nankai University, Tianjin 300071, People's Republic of China
| | - Feifei Ji
- §College of Pharmacy, Harbin University of Commerce, Harbin 150076, People's Republic of China
| | - Jing Kang
- §College of Pharmacy, Harbin University of Commerce, Harbin 150076, People's Republic of China
| | - Hao Wang
- †State Key Laboratory of Medicinal Chemical Biology and College of Pharmacy, Nankai University, Tianjin 300071, People's Republic of China
- ‡Tianjin Key Laboratory of Molecular Drug Research, Nankai University, Tianjin 300071, People's Republic of China
| | - Shen Li
- †State Key Laboratory of Medicinal Chemical Biology and College of Pharmacy, Nankai University, Tianjin 300071, People's Republic of China
- ‡Tianjin Key Laboratory of Molecular Drug Research, Nankai University, Tianjin 300071, People's Republic of China
| | - Da-Qing Jin
- ⊥School of Medicine, Nankai University, Tianjin 300071, People's Republic of China
| | | | - Hongwei Sun
- ΠComputational Centre for Molecular Science, College of Chemistry, Nankai University, Tianjin 300071, People's Republic of China
| | - Yuanqiang Guo
- †State Key Laboratory of Medicinal Chemical Biology and College of Pharmacy, Nankai University, Tianjin 300071, People's Republic of China
- ‡Tianjin Key Laboratory of Molecular Drug Research, Nankai University, Tianjin 300071, People's Republic of China
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Diene Valepotriates from Valeriana glechomifolia Prevent Lipopolysaccharide-Induced Sickness and Depressive-Like Behavior in Mice. EVIDENCE-BASED COMPLEMENTARY AND ALTERNATIVE MEDICINE 2015; 2015:145914. [PMID: 26170871 PMCID: PMC4480249 DOI: 10.1155/2015/145914] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/10/2015] [Revised: 05/24/2015] [Accepted: 05/26/2015] [Indexed: 01/22/2023]
Abstract
Valeriana glechomifolia, a native species from southern Brazil, presents antidepressant-like activity and diene valepotriates (VAL) contribute to the pharmacological properties of the genus. It is known that depression can develop on an inflammation background in vulnerable patients and antidepressants present anti-inflammatory properties. We investigated the effects of VAL (10 mg/kg, p.o.) on sickness and depressive-like behaviors as well as proinflammatory cytokines (IL-1β and TNF-α) and BDNF expression in the cortex of mice exposed to a 5 min swimming session (as a stressful stimulus) 30 min before the E. coli LPS injection (600 µg/kg, i.p.). The forced swim + LPS induced sickness and depressive-like behaviors, increased the cortical expression of IL-1β and TNF-α, and decreased BDNF expression. VAL was orally administered to mice 1 h before (pretreatment) or 5 h after (posttreatment) E. coli LPS injection. The pretreatment with VAL restored the behavioral alterations and the expression of cortical proinflammatory cytokines in LPS-injected animals but had no effects on BDNF expression, while the posttreatment rescued only behavioral alterations. Our results demonstrate for the first time the positive effects of VAL in an experimental model of depression associated with inflammation, providing new data on the range of action of these molecules.
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Wang M, Zhang Q, Wang H, Ren Q, Sun Y, Xie C, Xu J, Jin DQ, Ohizumi Y, Guo Y. Characterization and NO inhibitory activities of chemical constituents from an edible plant Petasites tatewakianus. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2014; 62:9362-9367. [PMID: 25188451 DOI: 10.1021/jf5034224] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
Petasites tatewakianus is an edible plant belonging to the family Compositae. In our continuous search for NO inhibitors, which may be useful for the development of anti-inflammatory agents, the chemical constituents of the leaves of the edible plant P. tatewakianus were investigated. This phytochemical investigation led to the isolation of 3 new (1-3) and 10 known (4-13) sesquiterpenes and 2 other types of known compounds (14 and 15). Their structures were elucidated on the basis of extensive 1D and 2D NMR spectroscopic data analyses, and the absolute configurations of compounds 1 and 3 were confirmed by comparing their experimental CD spectra with those calculated by the time-dependent density functional theory (TDDFT) method. The following biological studies disclosed that these isolated compounds showed inhibitory activities on LPS-induced NO production in murine microglial BV-2 cells. The results of our phytochemical investigation, including two new bakkenolide sesquiterpenes (1 and 2), one new sesquiterpene with an unusual carbon skeleton (3), and the first report of compounds 5-7 and 10-15 from this species, further revealed the chemical composition of P. tatewakianus as an edible plant, and the biological studies implied that P. tatewakianus, containing bioactive substances with the inhibitory activities of NO production, was potentially beneficial to human health.
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Affiliation(s)
- Meicheng Wang
- State Key Laboratory of Medicinal Chemical Biology and College of Pharmacy, ‡Tianjin Key Laboratory of Molecular Drug Research, and ⊥School of Medicine, Nankai University , Tianjin 300071, People's Republic of China
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