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Zawilska P, Cieślik-Boczula K. Laurdan emission study of the cholesterol-like effect of long-chain alkylresorcinols on the structure of dipalmitoylphosphocholine and sphingomyelin membranes. Biophys Chem 2017; 221:1-9. [DOI: 10.1016/j.bpc.2016.11.004] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/05/2016] [Revised: 11/06/2016] [Accepted: 11/10/2016] [Indexed: 12/22/2022]
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2
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Oliveira RJ, Navarro SD, de Lima DP, Meza A, Pesarini JR, da Silva Gomes R, Karaziack CB, de Oliveira Mauro M, Cunha-Laura AL, Monreal ACD, Romão W, Júnior VL, Beatriz A. A novel cytosporone 3-Heptyl-4,6-dihydroxy-3H-isobenzofuran-1-one: synthesis; toxicological, apoptotic and immunomodulatory properties; and potentiation of mutagenic damage. BMC Cancer 2015; 15:561. [PMID: 26228542 PMCID: PMC4520062 DOI: 10.1186/s12885-015-1532-2] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/21/2014] [Accepted: 07/02/2015] [Indexed: 12/30/2022] Open
Abstract
BACKGROUND A large number of studies are attempting to identify alternative products from natural sources or synthesized compounds that effectively interact with cancer cells without causing adverse effects on healthy cells. Resorcinolic lipids are a class of bioactive compounds that possess anticancer activity and are able to interact with the lipid bilayer. Therefore, the objective of this study was to synthesize a novel resorcinolic lipid and test its biological proprieties. METHODS We aimed to synthesize a novel resorcinolic lipid belonging to the class of cytosporones, AMS049 (3-Heptyl-4,6-dihydroxy-3H-isobenzofuran-1-one) and to evaluate the toxicity of two concentrations of this lipid (7.5 and 10 mg/kg) by determining its genotoxic, mutagenic, immunomodulatory, and apoptotic effects, as well as any biochemical and histopathological alterations in mice treated with cyclophosphamide. The results were analyzed by ANOVA followed by the Tukey test A . level of significance of p < 0.05 was adopted. RESULTS The new cytosporone AMS049 was synthesized in only three steps and in satisfactory yields. The results indicate that the compound is neither genotoxic nor mutagenic and does not alter biochemical parameters. The histological alterations observed in the liver and kidneys did not compromise the function of these organs. Histology of the spleen suggested immunomodulation, although no changes were observed in splenic phagocytosis or differential blood cell count. The results also show that AMS049 potentiates the mutagenic effect of the chemotherapy drug cyclophosphamide and that the combination induces apoptosis. CONCLUSION These facts indicate a potential therapeutic application of this novel cytosporone as an important chemotherapeutic adjuvant.
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Affiliation(s)
- Rodrigo Juliano Oliveira
- Centro de Estudos em Células Tronco, Terapia Celular e Genética Toxicológica - CeTroGen, Hospital Universitário "Maria Aparecida Pedrossian" - HUMAP, Empresa Brasileira de Serviços Hospitalares - EBSERH, Campo Grande, MS, Brazil. .,Programa de Mestrado em Farmácia, Centro de Ciências Biológicas e da Saúde - CCBS, Universidade Federal de Mato Grosso do Sul - UFMS, Campo Grande, MS, Brazil. .,Programa de Pós-graduação em Saúde e Desenvolvimento na Região Centro-Oeste, Faculdade de Medicina "Dr. Hélio Mandetta" - FAMED, Universidade Federal de Mato Grosso do Sul - UFMS, Campo Grande, MS, Brazil.
| | - Stephanie Dynczuki Navarro
- Centro de Estudos em Células Tronco, Terapia Celular e Genética Toxicológica - CeTroGen, Hospital Universitário "Maria Aparecida Pedrossian" - HUMAP, Empresa Brasileira de Serviços Hospitalares - EBSERH, Campo Grande, MS, Brazil. .,Programa de Mestrado em Farmácia, Centro de Ciências Biológicas e da Saúde - CCBS, Universidade Federal de Mato Grosso do Sul - UFMS, Campo Grande, MS, Brazil.
| | - Dênis Pires de Lima
- Programa de Mestrado em Farmácia, Centro de Ciências Biológicas e da Saúde - CCBS, Universidade Federal de Mato Grosso do Sul - UFMS, Campo Grande, MS, Brazil. .,Programa de Pós-graduação em Química, Instituto de Química, Universidade Federal de Mato Grosso do Sul - UFMS, Campo Grande, MS, Brazil.
| | - Alisson Meza
- Programa de Pós-graduação em Química, Instituto de Química, Universidade Federal de Mato Grosso do Sul - UFMS, Campo Grande, MS, Brazil.
| | - João Renato Pesarini
- Centro de Estudos em Células Tronco, Terapia Celular e Genética Toxicológica - CeTroGen, Hospital Universitário "Maria Aparecida Pedrossian" - HUMAP, Empresa Brasileira de Serviços Hospitalares - EBSERH, Campo Grande, MS, Brazil. .,Programa de Pós-graduação em Saúde e Desenvolvimento na Região Centro-Oeste, Faculdade de Medicina "Dr. Hélio Mandetta" - FAMED, Universidade Federal de Mato Grosso do Sul - UFMS, Campo Grande, MS, Brazil.
| | - Roberto da Silva Gomes
- Programa de Pós-graduação em Química, Instituto de Química, Universidade Federal de Mato Grosso do Sul - UFMS, Campo Grande, MS, Brazil. .,Faculdade de Ciências Exatas e Tecnologia - FACET, Universidade Federal da Grande Dourados - UFGD, Dourados, MS, Brazil.
| | - Caroline Bilhar Karaziack
- Programa de Pós-graduação em Química, Instituto de Química, Universidade Federal de Mato Grosso do Sul - UFMS, Campo Grande, MS, Brazil.
| | - Mariana de Oliveira Mauro
- Centro de Estudos em Células Tronco, Terapia Celular e Genética Toxicológica - CeTroGen, Hospital Universitário "Maria Aparecida Pedrossian" - HUMAP, Empresa Brasileira de Serviços Hospitalares - EBSERH, Campo Grande, MS, Brazil. .,Programa de Doutorado em Biotecnologia e Biodiversidade - Rede Pró Centro-Oeste, Universidade Federal de Mato Grosso do Sul - UFMS, Campo Grande, MS, Brazil.
| | - Andréa Luiza Cunha-Laura
- Centro de Ciências Biológicas e da Saúde - CCBS, Universidade Federal de Mato Grosso do Sul - UFMS, Campo Grande, MS, Brazil.
| | - Antônio Carlos Duenhas Monreal
- Centro de Ciências Biológicas e da Saúde - CCBS, Universidade Federal de Mato Grosso do Sul - UFMS, Campo Grande, MS, Brazil.
| | - Wanderson Romão
- Departamento de Química, Universidade Federal do Espírito Santo - UFES, Vitória, ES, Brazil.
| | - Valdemar Lacerda Júnior
- Departamento de Química, Universidade Federal do Espírito Santo - UFES, Vitória, ES, Brazil.
| | - Adilson Beatriz
- Programa de Mestrado em Farmácia, Centro de Ciências Biológicas e da Saúde - CCBS, Universidade Federal de Mato Grosso do Sul - UFMS, Campo Grande, MS, Brazil. .,Programa de Pós-graduação em Química, Instituto de Química, Universidade Federal de Mato Grosso do Sul - UFMS, Campo Grande, MS, Brazil.
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Navarro SD, Beatriz A, Meza A, Pesarini JR, Gomes RDS, Karaziack CB, Cunha-Laura AL, Monreal ACD, Romão W, Lacerda Júnior V, Mauro MDO, Oliveira RJ. A new synthetic resorcinolic lipid 3-Heptyl-3,4,6-trimethoxy-3H-isobenzofuran-1-one: Evaluation of toxicology and ability to potentiate the mutagenic and apoptotic effects of cyclophosphamide. Eur J Med Chem 2014; 75:132-42. [DOI: 10.1016/j.ejmech.2014.01.057] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/12/2013] [Revised: 01/27/2014] [Accepted: 01/29/2014] [Indexed: 01/21/2023]
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Carpinella MC, De Bellis L, Joray MB, Sosa V, Zunino PM, Palacios SM. Inhibition of development, swarming differentiation and virulence factors in Proteus mirabilis by an extract of Lithrea molleoides and its active principle (Z,Z)-5-(trideca-4',7'-dienyl)-resorcinol. PHYTOMEDICINE : INTERNATIONAL JOURNAL OF PHYTOTHERAPY AND PHYTOPHARMACOLOGY 2011; 18:994-997. [PMID: 21514124 DOI: 10.1016/j.phymed.2011.03.003] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/30/2023]
Abstract
Antibacterial activity of Lithrea molleoides extract against Proteus mirabilis has been previously reported by our group. In the present study, the compound (Z,Z)-5-(trideca-4',7'-dienyl)-resorcinol (1) was isolated as its responsible active principle. The effects of the compound obtained and of L. molleoides extract on P. mirabilis growth and virulence factors were evaluated. Compound 1 showed MIC and MBC values of 4000 μg/ml. It was found that the extract, at four times the MIC, produced complete killing of the uropathogen at 2h from the beginning of the experiment, while the alkylresorcinol, at four times the MIC, produced the same effect after 24 h. Hemolysis was adversely affected in treatments with both products at 8 μg/ml, while hemagglutination was not altered. The whole extract induced complete autoaggregation of P. mirabilis at 2000 μg/ml, while compound 1 at the same concentration did not show this property. Swarming motility was delayed in treatments with the extract and with 1 at 1000 and 8 μg/ml, respectively, at 8h from the beginning of the assay. Complete inhibition of the phenomenon was still observed after 24 h when compound 1 was added at 125 μg/ml. These findings offer the possibility of new classes of antimicrobial medicines to tackle infections caused by P. mirabilis.
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Affiliation(s)
- M C Carpinella
- Fine Chemicals and Natural Products Laboratory, School of Chemistry, Catholic University of Córdoba, Córdoba, Argentina
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5
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Atrooz O. Efects of Alkylresorcinolic Lipids Obtained from Acetonic Extract of Jordanian Wheat Grains on Liposome Properties. ACTA ACUST UNITED AC 2011. [DOI: 10.3923/ijbc.2011.314.321] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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6
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Resorcinolic lipids improve the properties of sphingomyelin–cholesterol liposomes. Chem Phys Lipids 2010; 163:648-54. [DOI: 10.1016/j.chemphyslip.2010.05.202] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2009] [Revised: 05/07/2010] [Accepted: 05/21/2010] [Indexed: 11/17/2022]
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Stasiuk M, Kozubek A. Biological activity of phenolic lipids. Cell Mol Life Sci 2010; 67:841-60. [PMID: 20213924 PMCID: PMC11115636 DOI: 10.1007/s00018-009-0193-1] [Citation(s) in RCA: 133] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/24/2009] [Revised: 10/21/2009] [Accepted: 10/23/2009] [Indexed: 12/15/2022]
Abstract
Phenolic lipids are a very diversified group of compounds derived from mono and dihydroxyphenols, i.e., phenol, catechol, resorcinol, and hydroquinone. Due to their strong amphiphilic character, these compounds can incorporate into erythrocytes and liposomal membranes. In this review, the antioxidant, antigenotoxic, and cytostatic activities of resorcinolic and other phenolic lipids are described. The ability of these compounds to inhibit bacterial, fungal, protozoan and parasite growth seems to depend on their interaction with proteins and/or on their membrane-disturbing properties.
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Affiliation(s)
- Maria Stasiuk
- Department of Lipids and Liposomes, University of Wroclaw, Poland.
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Siwko ME, de Vries AH, Mark AE, Kozubek A, Marrink SJ. Disturb or stabilize? A molecular dynamics study of the effects of resorcinolic lipids on phospholipid bilayers. Biophys J 2009; 96:3140-53. [PMID: 19383459 DOI: 10.1016/j.bpj.2009.01.040] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/16/2008] [Revised: 01/14/2009] [Accepted: 01/16/2009] [Indexed: 11/18/2022] Open
Abstract
Resorcinolic lipids, or resorcinols, are commonly found in plant membranes. They consist of a substituted benzene ring forming the hydrophilic lipid head, attached to an alkyl chain forming the hydrophobic tail. Experimental results show alternative effects of resorcinols on lipid membranes. Depending on whether they are added to lipid solutions before or after the formation of the liposomes, they either stabilize or destabilize these liposomes. Here we use atomistic molecular dynamics simulations to elucidate the molecular nature of this dual effect. Systems composed of either one of three resorcinol homologs, differing in the alkyl tail length, interacting with dimyristoylphosphatidylcholine lipid bilayers were studied. It is shown that resorcinols preincorporated into bilayers induce order within the lipid acyl chains, decrease the hydration of the lipid headgroups, and make the bilayers less permeable to water. In contrast, simulations in which the resorcinols are incorporated from the aqueous solution into a preformed phospholipid bilayer induce local disruption, leading to either transient pore formation or even complete rupture of the membrane. In line with the experimental data, our simulations thus demonstrate that resorcinols can either disturb or stabilize the membrane structure, and offer a detailed view of the underlying molecular mechanism.
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Affiliation(s)
- Magdalena E Siwko
- Department of Biophysical Chemistry, University of Groningen, Groningen Biomolecular Sciences and Biotechnology Institute, Groningen, The Netherlands
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Parikka K, Wähälä K. An expedient synthesis of 5-n-alkylresorcinols and novel 5-n-alkylresorcinol haptens. Beilstein J Org Chem 2009; 5:22. [PMID: 19590737 PMCID: PMC2707013 DOI: 10.3762/bjoc.5.22] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2009] [Accepted: 04/21/2009] [Indexed: 11/25/2022] Open
Abstract
The first synthesis of bioactive long alkyl chain 5-n-alkylresorcinols, present in whole grain products, by a novel modification of the Wittig reaction is described. All the main long chain 5-n-alkylresorcinols present in rye and wheat, including C(23) and C(25) analogues and haptens, which have not been previously prepared, were synthesised. Microwave-promoted reactions of a semi-stabilized ylid and alkanals in water gave good yields in both pressurized and open systems. An alternative microwave-promoted synthesis starting from non-stabilized alkyltriphenylphosphonium salts and 3,5-dimethoxybenzaldehyde worked as well. Aqueous media were suitable for the reactions even if the starting materials were not soluble in water. The 5-n-alkylresorcinols are potential biomarkers of whole grain intake, and the new hapten derivatives of 5-n-alkylresorcinols will open the way for the immunochemical detection techniques of alkylresorcinols.
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Affiliation(s)
- Kirsti Parikka
- Laboratory of Organic Chemistry, Department of Chemistry, P.O. Box 55, FIN-00014-University of Helsinki, Finland, tel. +358 9 191 50356, fax +358 9 191 50357
- (present address:) Department of Applied Chemistry and Microbiology, P.O. Box 27, FIN-00014-University of Helsinki, Finland
| | - Kristiina Wähälä
- Laboratory of Organic Chemistry, Department of Chemistry, P.O. Box 55, FIN-00014-University of Helsinki, Finland, tel. +358 9 191 50356, fax +358 9 191 50357
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Parikka K, Rowland IR, Welch RW, Wähälä K. In vitro antioxidant activity and antigenotoxicity of 5-n-alkylresorcinols. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2006; 54:1646-50. [PMID: 16506814 DOI: 10.1021/jf052486e] [Citation(s) in RCA: 51] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/06/2023]
Abstract
Incubation with 5-n-alkylresorcinols (chain lengths C15:0, C17:0, C19:0, C21:0, and C23:0) increased the self-protection capacity of HT29 human colon cancer cells against DNA damage induced by hydrogen peroxide and genotoxic fecal water samples using comet assay (single-cell gel electrophoresis assay). The alkylresorcinols did not exert potent antioxidant activity in the FRAP (ferric reduction ability of plasma) and DPPH (2,2-diphenyl-1-picrylhydrazyl) radical assays. However they were able to significantly inhibit copper-mediated oxidation of human LDL (low-density lipoprotein) in vitro, and pentadecylresorcinol at 25 micromol/L increased lag time by 65 min. The results show that alkylresorcinols have antigenotoxic and antioxidant activity under in vitro conditions.
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Affiliation(s)
- Kirsti Parikka
- Laboratory of Organic Chemistry, Department of Chemistry, University of Helsinki, P.O. Box 55, FIN-00014 Helsinki, Finland.
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11
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Bioactive Phenolic Lipids. ACTA ACUST UNITED AC 2005. [DOI: 10.1016/s1572-5995(05)80032-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/07/2023]
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Przeworska E, Gubernator J, Kozubek A. Formation of liposomes by resorcinolic lipids, single-chain phenolic amphiphiles from Anacardium occidentale L. BIOCHIMICA ET BIOPHYSICA ACTA 2001; 1513:75-81. [PMID: 11427196 DOI: 10.1016/s0005-2736(01)00346-7] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
Abstract
Resorcinolic lipids isolated from Anacardium occidentale nut oil extract (CNSL), unsaturated congeners of those isolated from bacterial and graminaceous sources, form at alkaline conditions liposomal structures alone as well as in the mixtures with cholesterol, fatty acids or phosphatidylethanolamine. Those vesicular structures show relatively high entrapment of the marker and stability of their size. The retention of the captured solute depends upon the type of resorcinolic lipid and on the temperature, but in general, is lower than control phospholipid liposomes.
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Affiliation(s)
- E Przeworska
- Department of Lipids and Liposomes, Institute of Biochemistry and Molecular Biology, University of Wroclaw, Przybyszewskiego 63/77, 51-148 Wroclaw, Poland
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Deszcz L, Kozubek A. Higher cardol homologs (5-alkylresorcinols) in rye seedlings. BIOCHIMICA ET BIOPHYSICA ACTA 2000; 1483:241-50. [PMID: 10634940 DOI: 10.1016/s1388-1981(99)00187-0] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
The occurrence of alkylresorcinols, polyketide compounds that in the same homologous series as cardol isolated from Anacardium occidentale (cashew) or bilobol from Ginkgo biloba which are derivatives of 1,3-dihydroxy-5-alk(en)ylbenzene, have been demonstrated in developing rye (Secale cereale L.) kernels. The 3-day-old seedlings grown in sterile conditions already contain detectable amounts of phenolic compounds that were identified as alkylresorcinols. This fraction is the mixture of saturated and enoic homologs of various lengths of the aliphatic side chain. The composition of homologs is similar to that determined in mature grains. The relatively high level of alkylresorcinols in mitochondria and plastids (enhanced approximately twice in the absence of light) suggests that their synthetic pathway and/or biological function may be related to these cellular compartments. Resorcinolic lipids, when present in the external medium, are taken up by seedlings in the energy-dependent manner.
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Affiliation(s)
- L Deszcz
- Department of Lipids and Liposomes, Institute of Biochemistry and Molecular Biology, University of Wroclaw, ul. Przybyszewskiego 63/77, 51-148, Wroclaw, Poland
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Gubernator J, Stasiuk M, Kozubek A. Dual effect of alkylresorcinols, natural amphiphilic compounds, upon liposomal permeability. BIOCHIMICA ET BIOPHYSICA ACTA 1999; 1418:253-60. [PMID: 10320677 DOI: 10.1016/s0005-2736(99)00026-7] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Abstract
The effect of 5-n-alkylresorcinols, natural amphiphilic compounds, upon properties of phospholipid vesicles depends on their localization asymmetry. A significant increase of the bilayer permeability is observed when the title compounds are present only in the external medium. When these amphiphiles are preincorporated into the bilayer during its formation, the resulting liposomes effectively encapsulate water-soluble solutes which still remain in liposomes after 25 h. Additionally, the size of liposomes made of alkylresorcinol-phosphatidylcholine mixtures after eight cycles of freezing and thawing only (180-200 nm) is severalfold smaller than the size of vesicles prepared in a similar way from phospholipids only and the resulting liposomes are more homogeneous. These liposomes modified with alkylresorcinols are also stable during 40 day storage at both 4 degrees C and 20 degrees C, in contrast to control liposomes that already strongly aggregate after 10 days.
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Affiliation(s)
- J Gubernator
- Department of Lipids and Liposomes, Institute of Biochemistry and Molecular Biology, University of Wroclaw, Przybyszewskiego 63/77, 51-148, Wroclaw, Poland
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Kozubek A, Tyman JHP. Resorcinolic Lipids, the Natural Non-isoprenoid Phenolic Amphiphiles and Their Biological Activity. Chem Rev 1999; 99:1-26. [PMID: 11848979 DOI: 10.1021/cr970464o] [Citation(s) in RCA: 355] [Impact Index Per Article: 14.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Affiliation(s)
- Arkadiusz Kozubek
- Institute of Physics and Environmental Sciences, Brunel University, Uxbridge, Middlesex UB83PH, United Kingdom
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Winata A, Lorenz K. Effects of Fermentation and Baking of Whole Wheat and Whole Rye Sourdough Breads on Cereal Alkylresorcinols. Cereal Chem 1997. [DOI: 10.1094/cchem.1997.74.3.284] [Citation(s) in RCA: 23] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Affiliation(s)
- A. Winata
- Department of Food Science and Human Nutrition, Colorado State University, Fort Collins, CO 80523-1571
| | - K. Lorenz
- Department of Food Science and Human Nutrition, Colorado State University, Fort Collins, CO 80523-1571
- Corresponding author. Fax: 970/491-7252
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García S, García C, Heinzen H, Moyna P. Chemical basis of the resistance of barley seeds to pathogenic fungi. PHYTOCHEMISTRY 1997; 44:415-418. [PMID: 9014369 DOI: 10.1016/s0031-9422(96)00511-0] [Citation(s) in RCA: 22] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
Abstract
The 5-(n)-alkylresorcinol fraction of the epicuticular waxes of Hordeum vulgare seeds appeared to be responsible for their in-born resistance to pathogenic fungi such as Aspergillus niger and Penicillium crysogenum. The antifungal properties of this fraction were evaluated qualitatively and quantitatively with a novel bioassay where the extreme lipophilicity of these compounds was taken into account. The minimum inhibitory concentration in the fungi tested ranged from 5.6 to 10 micrograms cm-2 for the alkyresorcinols. The behaviour of the different cultivars against these fungi could be predicted by measuring the natural amount of resorcinols of each variety by TLC-scanning densitometry. The ranking of cultivars thus established correlated well with the field behaviour of each cultivar, providing a useful and rapid method for predicting the behaviour against fungi of new varieties being developed.
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Affiliation(s)
- S García
- Cátedra de Farmacognosia y Productos Naturales, Facultad de Química, Montevideo, Uruguay
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18
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Kozubek A, Tyman JH. Cereal grain resorcinolic lipids: mono and dienoic homologues are present in rye grains. Chem Phys Lipids 1995. [DOI: 10.1016/0009-3084(95)02480-7] [Citation(s) in RCA: 33] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
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Gerdon S, Hoffmann S, Blume A. Properties of mixed monolayers and bilayers of long-chain 5-n-alkylresorcinols and dipalmitoylphosphatidylcholine. Chem Phys Lipids 1994. [DOI: 10.1016/0009-3084(94)90074-4] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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20
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Sobota A, Bandorowicz J, Jezierski A, Sikorski AF. The effect of annexin IV and VI on the fluidity of phosphatidylserine/phosphatidylcholine bilayers studied with the use of 5-deoxylstearate spin label. FEBS Lett 1993; 315:178-82. [PMID: 8417975 DOI: 10.1016/0014-5793(93)81158-v] [Citation(s) in RCA: 23] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/30/2023]
Abstract
An effect of annexin IV and VI on the fluidity of phosphatidylserine/phosphatidylcholine (PS/PC) membranes was studied by spin labeling technique with the use of 5-doxylstearic acid. It was found that calcium ions at micromolar concentrations induced a marked decrease in the order parameter of PS/PC membranes. This effect was completely abolished by both annexins. The influence of annexins on the mobility of fatty acid chains in the studied region in PE/PC membranes was insignificant.
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Affiliation(s)
- A Sobota
- M. Nencki Institute of Experimental Biology, Department of Cell Biology, Warsaw, Poland
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Bitkov VV, Nenashev VA, Pridachina NN, Batrakov SG. Membrane-structuring properties of bacterial long-chain alkylresorcinols. BIOCHIMICA ET BIOPHYSICA ACTA 1992; 1108:224-32. [PMID: 1637847 DOI: 10.1016/0005-2736(92)90029-l] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
To investigate the mechanism by which 5-n-alkyl(C19-C25)-resorcinols synthesized by certain bacteria of the Azotobacter genus affect the lipid bilayers of cellular membranes, planar bimolecular membranes were formed from these alkyl-resorcinols and from mixtures of those and typical bacterial phospholipids such as phosphatidylethanolamine, phosphatidylglycerol, and diphosphatidylglycerol. The electrical properties and, in some instances, the stability of the prepared membranes have been studied. The alkylresorcinols have been found to associate with phospholipids to form oligomeric and polymeric complexes, thereby giving rise to modifications in the bilayer structure and properties. It has been shown that the same compounds suppress the mitochondrial respiration in the presence of NAD-dependent substrates, but they activate it if succinate is used as substrate. This fact is explained in terms of the interaction between the alkylresorcinols and membrane phospholipids.
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Affiliation(s)
- V V Bitkov
- Research Laboratory of Biologically Active Substances of Hydrobionts, Moscow, Russia
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