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Erschienen in: Inflammopharmacology 2/2019

19.04.2018 | Original Article

In vitro anti-inflammatory activity of terpenes via suppression of superoxide and nitric oxide generation and the NF-κB signalling pathway

verfasst von: Franciane Martins Marques, Mariana Moreira Figueira, Elisângela Flávia Pimentel Schmitt, Tamara P. Kondratyuk, Denise Coutinho Endringer, Rodrigo Scherer, Marcio Fronza

Erschienen in: Inflammopharmacology | Ausgabe 2/2019

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Abstract

Background and Aims

Terpenes are considered the main components of essential oils and an important source for the identification of novel lead molecules. This study aimed to investigate the in vitro anti-inflammatory activity of l-carveol, l-carvone, and m-cimene (monoterpenes) and of valencene and guaiene (sesquiterpenes).

Methods

The influence on intracellular nitric oxide (NO) and pro- and anti-inflammatory cytokine (TNF-α, IL-1α and IL-10) production and on nuclear factor kappa B (NF-κB) activity was determined using Griess reagent, immunoenzymatic assay kits (ELISA) and chemiluminescence measurements in cell-based assays, respectively. Antioxidant activity was assayed through the protective effect against cellular oxidative damage produced by superoxide anion production (O 2 ·− ) and hydrogen peroxide on macrophages and by the quenching activity of the NO radical.

Results and Discussion

Terpenes reduced the pro-inflammatory cytokines TNF-α and IL-1α and increased the production of IL-10. In addition, the terpenes, especially guaiene (53.3 ± 2.4%) and m-cymene (38.1 ± 0.6%), significantly inhibited NO production in a macrophage cell culture-based assay, whereas no effect was observed in the scavenging activity of this radical. l-carveol and m-cymene significantly inhibited O 2 ·− production with reductions of approximately 68.6 ± 2.2% and 48.2 ± 4.2%, respectively, at a concentration of 10 μM. Moreover, these terpenes were verified to suppress NF-κB activity. The results indicate that these terpenes have therapeutic potential and may be used to suppress inflammatory diseases or as a leading compounds.
Literatur
Zurück zum Zitat Adetutu A, Morgan WA, Corcoran O (2011) Antibacterial, antioxidant and fibroblast growth stimulation activity of crude extracts of Bridelia ferruginea leaf, a wound-healing plant of Nigeria. J Ethnopharmacol 133(1):116–119CrossRef Adetutu A, Morgan WA, Corcoran O (2011) Antibacterial, antioxidant and fibroblast growth stimulation activity of crude extracts of Bridelia ferruginea leaf, a wound-healing plant of Nigeria. J Ethnopharmacol 133(1):116–119CrossRef
Zurück zum Zitat Ambrož M, Boušová I, Skarka A, Hanušová V, Králová V, Matoušková P, Szotáková B, Skálová L (2015) The influence of sesquiterpenes from Myrica rubra on the antiproliferative and pro-oxidative effects of doxorubicin and its accumulation in cancer cells. Molecules 20(8):15343–15358CrossRef Ambrož M, Boušová I, Skarka A, Hanušová V, Králová V, Matoušková P, Szotáková B, Skálová L (2015) The influence of sesquiterpenes from Myrica rubra on the antiproliferative and pro-oxidative effects of doxorubicin and its accumulation in cancer cells. Molecules 20(8):15343–15358CrossRef
Zurück zum Zitat Annan K, Houghton PJ (2008) Antibacterial, antioxidant and fibroblast growth stimulation of aqueous extracts of Ficus asperifolia Miq. and Gossypium arboreum L., wound-healing plants of Ghana. J Ethnopharmacol 119(1):141–144CrossRef Annan K, Houghton PJ (2008) Antibacterial, antioxidant and fibroblast growth stimulation of aqueous extracts of Ficus asperifolia Miq. and Gossypium arboreum L., wound-healing plants of Ghana. J Ethnopharmacol 119(1):141–144CrossRef
Zurück zum Zitat Baker R, Hayden M, Ghosh S (2011) NF-κB, inflammation, and metabolic disease. Cell Metab 13(1):11–22CrossRef Baker R, Hayden M, Ghosh S (2011) NF-κB, inflammation, and metabolic disease. Cell Metab 13(1):11–22CrossRef
Zurück zum Zitat Barreiros A, David J, David J (2006) Estresse oxidativo: relação entre geração de espécies reativas e defesa do organismo. Quím Nova 29(1):113–123CrossRef Barreiros A, David J, David J (2006) Estresse oxidativo: relação entre geração de espécies reativas e defesa do organismo. Quím Nova 29(1):113–123CrossRef
Zurück zum Zitat Bates JN, Baker MT, Guerra R Jr, Harrison DG (1991) Nitric oxide generation from nitroprusside by vascular tissue: evidence that reduction of the nitroprusside anion and cyanide loss are required. Biochem Pharmacol 42:S157–S165CrossRef Bates JN, Baker MT, Guerra R Jr, Harrison DG (1991) Nitric oxide generation from nitroprusside by vascular tissue: evidence that reduction of the nitroprusside anion and cyanide loss are required. Biochem Pharmacol 42:S157–S165CrossRef
Zurück zum Zitat Brune K, Patrignani P (2015) New insights into the use of currently available non-steroidal anti-inflammatory drugs. J Pain Res 8:105–118CrossRef Brune K, Patrignani P (2015) New insights into the use of currently available non-steroidal anti-inflammatory drugs. J Pain Res 8:105–118CrossRef
Zurück zum Zitat Choi HS, Kim JW, Cha YN, Kim C (2006) A quantitative nitroblue tetrazolium assay for determining intracellular superoxide anion production in phagocytic cells. J Immunoassay Immunochem 27(1):31–44CrossRef Choi HS, Kim JW, Cha YN, Kim C (2006) A quantitative nitroblue tetrazolium assay for determining intracellular superoxide anion production in phagocytic cells. J Immunoassay Immunochem 27(1):31–44CrossRef
Zurück zum Zitat Coleman JW (2001) Nitric oxide in immunity and inflammation. Int Immunopharmacol 8:1397–1406CrossRef Coleman JW (2001) Nitric oxide in immunity and inflammation. Int Immunopharmacol 8:1397–1406CrossRef
Zurück zum Zitat Crowell P, Kennan W, Haag J, Ahmad S, Vedejs E, Gould M (1992) Chemoprevention of mammary carcinogenesis by hydroxylated derivatives of d-limonene. Carcinogenesis 13(7):1261–1264CrossRef Crowell P, Kennan W, Haag J, Ahmad S, Vedejs E, Gould M (1992) Chemoprevention of mammary carcinogenesis by hydroxylated derivatives of d-limonene. Carcinogenesis 13(7):1261–1264CrossRef
Zurück zum Zitat Dang T, Süssmuth RD (2017) Bioactive peptide natural products as lead structures for medicinal use. Acc Chem Res 50(7):1566–1576CrossRef Dang T, Süssmuth RD (2017) Bioactive peptide natural products as lead structures for medicinal use. Acc Chem Res 50(7):1566–1576CrossRef
Zurück zum Zitat De Sousa DP, de Farias Nóbrega FF, de Almeida RN (2007) Influence of the chirality of (R)-(−)- and (S)-(+)-carvone in the central nervous system: a comparative study. Chirality 19(4):264–268CrossRef De Sousa DP, de Farias Nóbrega FF, de Almeida RN (2007) Influence of the chirality of (R)-(−)- and (S)-(+)-carvone in the central nervous system: a comparative study. Chirality 19(4):264–268CrossRef
Zurück zum Zitat De Stefano D, Maiuri MC, Simeon V, Grassia G, Soscia A, Cinelli MP, Carnuccio R (2007) Lycopene, quercetin and tyrosol prevent macrophage activation induced by gliadin and IFN-gamma. Eur J Pharmacol 566(1–3):192–199CrossRef De Stefano D, Maiuri MC, Simeon V, Grassia G, Soscia A, Cinelli MP, Carnuccio R (2007) Lycopene, quercetin and tyrosol prevent macrophage activation induced by gliadin and IFN-gamma. Eur J Pharmacol 566(1–3):192–199CrossRef
Zurück zum Zitat Deutschman CS, Tracey KJ (2014) Sepsis: current dogma and new perspectives. Immunity 40:463–475CrossRef Deutschman CS, Tracey KJ (2014) Sepsis: current dogma and new perspectives. Immunity 40:463–475CrossRef
Zurück zum Zitat Echeverrigaray S, Zacaria J, Beltrão R (2010) Nematicidal activity of monoterpenoids against the root-knot nematode Meloidogyne incognita. Phytopathology 100(2):199–203CrossRef Echeverrigaray S, Zacaria J, Beltrão R (2010) Nematicidal activity of monoterpenoids against the root-knot nematode Meloidogyne incognita. Phytopathology 100(2):199–203CrossRef
Zurück zum Zitat Feghali CA, Wright TM (1997) Cytokines in acute and chronic inflammation. Front Biosci 2:12–26 Feghali CA, Wright TM (1997) Cytokines in acute and chronic inflammation. Front Biosci 2:12–26
Zurück zum Zitat Filippin LI, Vercelino R, Marroni NP, Xavier RM (2008) Influência de processos redox na resposta inflamatória da artrite reumatóide. Revista Brasileira de Reumatologia 48(1):17–24CrossRef Filippin LI, Vercelino R, Marroni NP, Xavier RM (2008) Influência de processos redox na resposta inflamatória da artrite reumatóide. Revista Brasileira de Reumatologia 48(1):17–24CrossRef
Zurück zum Zitat Fullerton JN, Gilroy DW (2016) Resolution of inflammation: a new therapeutic frontier. Nat Rev Drug Discov 15:551–567CrossRef Fullerton JN, Gilroy DW (2016) Resolution of inflammation: a new therapeutic frontier. Nat Rev Drug Discov 15:551–567CrossRef
Zurück zum Zitat Gautam R, Jachak SM (2009) Recent developments in anti-inflammatory natural products. Med Res Rev 29(5):767–820CrossRef Gautam R, Jachak SM (2009) Recent developments in anti-inflammatory natural products. Med Res Rev 29(5):767–820CrossRef
Zurück zum Zitat Gonçalves JC, Oliveira Fde S, Benedito RB, de Sousa DP, de Almeida RN, de Araújo DA (2008) Antinociceptive activity of (−)-carvone: evidence of association with decreased peripheral nerve excitability. Biol Pharm Bull 31(5):1017–1020CrossRef Gonçalves JC, Oliveira Fde S, Benedito RB, de Sousa DP, de Almeida RN, de Araújo DA (2008) Antinociceptive activity of (−)-carvone: evidence of association with decreased peripheral nerve excitability. Biol Pharm Bull 31(5):1017–1020CrossRef
Zurück zum Zitat Green LC, Wagner DA, Glogowski J, Skipper PL, Wishnok JS, Tannenbaum SR (1982) Analysis of nitrate, nitrite, and [15N] nitrate in biological fluids. Anal Biochem 126(1):131–138CrossRef Green LC, Wagner DA, Glogowski J, Skipper PL, Wishnok JS, Tannenbaum SR (1982) Analysis of nitrate, nitrite, and [15N] nitrate in biological fluids. Anal Biochem 126(1):131–138CrossRef
Zurück zum Zitat Hamidzadeh K, Christensen SM, Dalby E, Chandrasekaran P, Mosser DM (2017) Macrophages and the recovery from acute and chronic inflammation. Annu Ver Physiol 79:567–592CrossRef Hamidzadeh K, Christensen SM, Dalby E, Chandrasekaran P, Mosser DM (2017) Macrophages and the recovery from acute and chronic inflammation. Annu Ver Physiol 79:567–592CrossRef
Zurück zum Zitat Homhual S, Zhang HJ, Bunyapraphatsara N, Kondratyuk TP, Santarsiero BD, Mesecar AD, Herunsalee A, Chaukul W, Pezzuto JM, Fong HH (2006) Bruguiesulfurol, a new sulfur compound from Bruguiera gymnorrhiza. Planta Med 72(3):255–260CrossRef Homhual S, Zhang HJ, Bunyapraphatsara N, Kondratyuk TP, Santarsiero BD, Mesecar AD, Herunsalee A, Chaukul W, Pezzuto JM, Fong HH (2006) Bruguiesulfurol, a new sulfur compound from Bruguiera gymnorrhiza. Planta Med 72(3):255–260CrossRef
Zurück zum Zitat Hussain AI, Anwar F, Nigam PS, Ashraf M, Gilani AH (2010) Seasonal variation in content, chemical composition and antimicrobial and cytotoxic activities of essential oils from four Mentha species. J Sci Food Agric 90:1827–1836PubMed Hussain AI, Anwar F, Nigam PS, Ashraf M, Gilani AH (2010) Seasonal variation in content, chemical composition and antimicrobial and cytotoxic activities of essential oils from four Mentha species. J Sci Food Agric 90:1827–1836PubMed
Zurück zum Zitat Kim S, Jung E, Kim JH, Park YH, Lee J, Park D (2011) Inhibitory effects of (−)-α-bisabolol on LPS-induced inflammatory response in RAW264.7 macrophages. Food Chem Toxicol 49(10):2580–2585CrossRef Kim S, Jung E, Kim JH, Park YH, Lee J, Park D (2011) Inhibitory effects of (−)-α-bisabolol on LPS-induced inflammatory response in RAW264.7 macrophages. Food Chem Toxicol 49(10):2580–2585CrossRef
Zurück zum Zitat Kolaczkowska E, Kubes P (2013) Neutrophil recruitment and function in health and inflammation. Nat Rev Immunol 13(3):159–175CrossRef Kolaczkowska E, Kubes P (2013) Neutrophil recruitment and function in health and inflammation. Nat Rev Immunol 13(3):159–175CrossRef
Zurück zum Zitat Kondratyuk TP, Park EJ, Yu R, Van Breemen RB, Asolkar RN, Murphy BT, Fenical W, Pezzuto JM (2012) Novel marine phenazines as potential cancer chemopreventive and anti-inflammatory agents. Mar Drugs 10:451–464CrossRef Kondratyuk TP, Park EJ, Yu R, Van Breemen RB, Asolkar RN, Murphy BT, Fenical W, Pezzuto JM (2012) Novel marine phenazines as potential cancer chemopreventive and anti-inflammatory agents. Mar Drugs 10:451–464CrossRef
Zurück zum Zitat Koo HJ, Song YS, Kim HJ, Lee YH, Hong SM, Kim SJ, Kim BC, Jin C, Lim CJ, Park EH (2004) Antiinflammatory effects of genipin, an active principle of gardenia. Eur J Pharmacol 495(2–3):201–208CrossRef Koo HJ, Song YS, Kim HJ, Lee YH, Hong SM, Kim SJ, Kim BC, Jin C, Lim CJ, Park EH (2004) Antiinflammatory effects of genipin, an active principle of gardenia. Eur J Pharmacol 495(2–3):201–208CrossRef
Zurück zum Zitat Kopf M, Bachmann MF, Marsland BJ (2010) Averting inflammation by targeting the cytokine environment. Nat Rev Drug Discov 9(9):703–718CrossRef Kopf M, Bachmann MF, Marsland BJ (2010) Averting inflammation by targeting the cytokine environment. Nat Rev Drug Discov 9(9):703–718CrossRef
Zurück zum Zitat Lawrence T (2009) The Nuclear Factor NF-κB Pathway in Inflammation. Cold Spring Harb Perspect Biol 1(6):a001651CrossRef Lawrence T (2009) The Nuclear Factor NF-κB Pathway in Inflammation. Cold Spring Harb Perspect Biol 1(6):a001651CrossRef
Zurück zum Zitat Low P, Clark AM, Chou TC, Chang TC, Reynolds M, Ralph SJ (2015) Immunomodulatory activity of Melaleuca alternifolia concentrate (MAC): inhibition of LPS-induced NF-κB activation and cytokine production in myeloid cell lines. Int Immunopharmacol 26(1):257–264CrossRef Low P, Clark AM, Chou TC, Chang TC, Reynolds M, Ralph SJ (2015) Immunomodulatory activity of Melaleuca alternifolia concentrate (MAC): inhibition of LPS-induced NF-κB activation and cytokine production in myeloid cell lines. Int Immunopharmacol 26(1):257–264CrossRef
Zurück zum Zitat Lozon Y, Sultan A, Lansdell S, Prytkova T, Sadek B, Yang KH, Howarth FC, Millar NS, Oz M (2016) Inhibition of human α7 nicotinic acetylcholine receptors by cyclic monoterpene carveol. Eur J Pharmacol 776:44–51CrossRef Lozon Y, Sultan A, Lansdell S, Prytkova T, Sadek B, Yang KH, Howarth FC, Millar NS, Oz M (2016) Inhibition of human α7 nicotinic acetylcholine receptors by cyclic monoterpene carveol. Eur J Pharmacol 776:44–51CrossRef
Zurück zum Zitat Mendes S, Mansoor T, Rodrigues A, Armas J, Ferreira M (2013) Anti-inflammatory guaiane-type sesquiterpenes from the fruits of Pittosporum undulatum. Phytochemistry 95:308–314CrossRef Mendes S, Mansoor T, Rodrigues A, Armas J, Ferreira M (2013) Anti-inflammatory guaiane-type sesquiterpenes from the fruits of Pittosporum undulatum. Phytochemistry 95:308–314CrossRef
Zurück zum Zitat Mosmann T (1983) Rapid colorimetric assay for cellular growth and survival: application to proliferation and cytotoxicity assays. J Immunol Methods 65:55–63CrossRef Mosmann T (1983) Rapid colorimetric assay for cellular growth and survival: application to proliferation and cytotoxicity assays. J Immunol Methods 65:55–63CrossRef
Zurück zum Zitat Omolo MO, Okinyo D, Ndiege IO, Lwande W, Hassanali A (2004) Repellency of essential oils of some Kenyan plants against Anopheles gambiae. Phytochemistry 65(20):2797–2802CrossRef Omolo MO, Okinyo D, Ndiege IO, Lwande W, Hassanali A (2004) Repellency of essential oils of some Kenyan plants against Anopheles gambiae. Phytochemistry 65(20):2797–2802CrossRef
Zurück zum Zitat Patel P, Thakkar V (2014) l-carvone induces p53, caspase 3 mediated apoptosis and inhibits the migration of breast cancer cell lines. Nutr Cancer 66(3):453–462CrossRef Patel P, Thakkar V (2014) l-carvone induces p53, caspase 3 mediated apoptosis and inhibits the migration of breast cancer cell lines. Nutr Cancer 66(3):453–462CrossRef
Zurück zum Zitat Pereira-Leite C, Nunes C, Jamal SK, Cuccovia IM, Reis S (2017) nonsteroidal anti-inflammatory therapy: a journey toward safety. Med Res Rev 37(4):802–859CrossRef Pereira-Leite C, Nunes C, Jamal SK, Cuccovia IM, Reis S (2017) nonsteroidal anti-inflammatory therapy: a journey toward safety. Med Res Rev 37(4):802–859CrossRef
Zurück zum Zitat Rozza AL, Meira de Faria F, Souza Brito AR, Pellizzon CH (2014) The gastroprotective effect of menthol: involvement of anti-apoptotic, antioxidant and anti-inflammatory activities. PLoS One 9(1):e86686CrossRef Rozza AL, Meira de Faria F, Souza Brito AR, Pellizzon CH (2014) The gastroprotective effect of menthol: involvement of anti-apoptotic, antioxidant and anti-inflammatory activities. PLoS One 9(1):e86686CrossRef
Zurück zum Zitat Salminen A, Lehtonen M, Suuronen T, Kaarniranta K, Huuskonen J (2008) Terpenoids: natural inhibitors of NF-kappaB signaling with anti-inflammatory and anticancer potential. Cell Mol Life Sci 65(19):2979–2999CrossRef Salminen A, Lehtonen M, Suuronen T, Kaarniranta K, Huuskonen J (2008) Terpenoids: natural inhibitors of NF-kappaB signaling with anti-inflammatory and anticancer potential. Cell Mol Life Sci 65(19):2979–2999CrossRef
Zurück zum Zitat Schett G, Elewaut D, McInnes IB, Dayer JM, Neurath MF (2013) How cytokine networks fuel inflammation: toward a cytokine-based disease taxonomy. Nat Med 19(7):822–824CrossRef Schett G, Elewaut D, McInnes IB, Dayer JM, Neurath MF (2013) How cytokine networks fuel inflammation: toward a cytokine-based disease taxonomy. Nat Med 19(7):822–824CrossRef
Zurück zum Zitat Skehan P, Storeng R, Scudiero D, Monks A, McMahon J, Vistica D, Warren JT, Bokesch H, Kenney S, Boyd MR (1990) New colorimetric cytotoxicity assay for anticancer-drug screening. J Natl Cancer Inst 82(13):1107–1112CrossRef Skehan P, Storeng R, Scudiero D, Monks A, McMahon J, Vistica D, Warren JT, Bokesch H, Kenney S, Boyd MR (1990) New colorimetric cytotoxicity assay for anticancer-drug screening. J Natl Cancer Inst 82(13):1107–1112CrossRef
Zurück zum Zitat Surh YJ, Chun KS, Cha HH, Han SS, Keum YS, Park KK, Lee SS (2001) Molecular mechanisms underlying chemopreventive activities of anti-inflammatory phytochemicals: down-regulation of COX-2 and iNOS through suppression of NF-kappa B activation. Mutat Res 480–481:243–268CrossRef Surh YJ, Chun KS, Cha HH, Han SS, Keum YS, Park KK, Lee SS (2001) Molecular mechanisms underlying chemopreventive activities of anti-inflammatory phytochemicals: down-regulation of COX-2 and iNOS through suppression of NF-kappa B activation. Mutat Res 480–481:243–268CrossRef
Zurück zum Zitat Valko M, Leibfritz D, Moncol J, Cronin MT, Mazur M, Telser J (2007) Free radicals and antioxidants in normal physiological functions and human disease. Int J Biochem Cell Biol 39:44–84CrossRef Valko M, Leibfritz D, Moncol J, Cronin MT, Mazur M, Telser J (2007) Free radicals and antioxidants in normal physiological functions and human disease. Int J Biochem Cell Biol 39:44–84CrossRef
Zurück zum Zitat Wagner KH, Elmadfa I (2003) Biological relevance of terpenoids. Overview focusing on mono-, di- and tetraterpenes. Ann Nutr Metab 47:95–106CrossRef Wagner KH, Elmadfa I (2003) Biological relevance of terpenoids. Overview focusing on mono-, di- and tetraterpenes. Ann Nutr Metab 47:95–106CrossRef
Zurück zum Zitat Yadav VR, Prasad S, Sung B, Kannappan R, Aggarwal BB (2010) Targeting inflammatory pathways by triterpenoids for prevention and treatment of cancer. Toxins (Basel) 2(10):2428–2466CrossRef Yadav VR, Prasad S, Sung B, Kannappan R, Aggarwal BB (2010) Targeting inflammatory pathways by triterpenoids for prevention and treatment of cancer. Toxins (Basel) 2(10):2428–2466CrossRef
Zurück zum Zitat Yang I, Lee D, Shin H (2016) Inhibitory effect of valencene on the development of atopic dermatitis-like skin lesions in nc/nga mice. J Evid-Based Complement Altern Med 2016:1–11 Yang I, Lee D, Shin H (2016) Inhibitory effect of valencene on the development of atopic dermatitis-like skin lesions in nc/nga mice. J Evid-Based Complement Altern Med 2016:1–11
Zurück zum Zitat Zhang K, Song F, Lu X, Chen W, Huang C, Li L, Liang D, Cao S, Dai H (2017) MicroRNA-322 inhibits inflammatory cytokine expression and promotes cell proliferation in LPS-stimulated murine macrophages by targeting NF-κB1 (p50). Biosci Rep 37(1):BSR20160239CrossRef Zhang K, Song F, Lu X, Chen W, Huang C, Li L, Liang D, Cao S, Dai H (2017) MicroRNA-322 inhibits inflammatory cytokine expression and promotes cell proliferation in LPS-stimulated murine macrophages by targeting NF-κB1 (p50). Biosci Rep 37(1):BSR20160239CrossRef
Metadaten
Titel
In vitro anti-inflammatory activity of terpenes via suppression of superoxide and nitric oxide generation and the NF-κB signalling pathway
verfasst von
Franciane Martins Marques
Mariana Moreira Figueira
Elisângela Flávia Pimentel Schmitt
Tamara P. Kondratyuk
Denise Coutinho Endringer
Rodrigo Scherer
Marcio Fronza
Publikationsdatum
19.04.2018
Verlag
Springer International Publishing
Erschienen in
Inflammopharmacology / Ausgabe 2/2019
Print ISSN: 0925-4692
Elektronische ISSN: 1568-5608
DOI
https://doi.org/10.1007/s10787-018-0483-z

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