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Hamouda M, Sboui A, Salhi I, Omrani A, Hammadi M, Souchard JP, Bouajila J, Khorchani T. Effect of heat treatment on the antioxidant activities of camel milk alpha, beta and total caseins. Cell Mol Biol (Noisy-le-grand) 2022; 68:194-199. [PMID: 36495496 DOI: 10.14715/cmb/2022.68.7.32] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/02/2022] [Indexed: 12/13/2022]
Abstract
This study aimed to evaluate the effect of various heating temperatures on the antioxidant activities of camel milk caseins. The samples were processed with three different heat treatments: Pasteurization at low and high temperatures and boiling. Fresh camel milk (unheated) was used as a control. Camel milk caseins were separated by fast ion exchange liquid chromatography (FPLC) and identified by the sodium dodecyl sulfate-polyacrylamide gel electrophoresis (SDS page). The antioxidant activities of caseins were measu- red by three different in vitro methods: 2,2-diphenyl-1-picrylhydrazyl (DPPH) radical scavenging activity, 2, 2'-azino-bis (3-ethylbenzthiazoline-6-sulfonate) (ABTS) radical scavenging activity and ferric reducing power assay (FRAP). The antioxidant activity evaluated by the DPPH assay decreased significantly (p<0.05) with the increase in heat treatment of caseins. However, there was no significant difference in ABTS radical scavenging activity and Ferric Reducing Antioxidant Power assay (FRAP) of heat-treated camel caseins compared to unheated onesStill, a decrease was observed in those activities by the increase of temperature in the different casein concentrations. Besides, whatever the concentration tested and the methods applied, the antioxidant activity of beta-casein (β-CN) was more pronounced than the alpha-casein (α-CN). Therefore, camel milk casein could be used as a natural source of antioxidants which may have a potential application in the food and nutraceutical industries. Throughout the different heat treatments applied, pasteurization at low temperature could be the most suitable alternative to preserve the antioxidant properties of camel milk.
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Affiliation(s)
- Maha Hamouda
- University of Gabes, Livestock and Wildlife Laboratory, Arid Lands Institute of Mednine, 4119 Mednine, Tunisia.
| | - Amel Sboui
- University of Gabes, Livestock and Wildlife Laboratory, Arid Lands Institute of Mednine, 4119 Mednine, Tunisia.
| | - Imed Salhi
- University of Gabes, Livestock and Wildlife Laboratory, Arid Lands Institute of Mednine, 4119 Mednine, Tunisia.
| | | | - Mohamed Hammadi
- University of Gabes, Livestock and Wildlife Laboratory, Arid Lands Institute of Mednine, 4119 Mednine, Tunisia.
| | - Jean Pierre Souchard
- Laboratoire de Génie Chimique, Université de Toulouse, CNRS, INPT, UPS, Toulouse, France.
| | - Jalloul Bouajila
- Laboratoire de Génie Chimique, Université de Toulouse, CNRS, INPT, UPS, Toulouse, France.
| | - Touhami Khorchani
- University of Gabes, Livestock and Wildlife Laboratory, Arid Lands Institute of Mednine, 4119 Mednine, Tunisia.
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Ben Hassine D, Kammoun El Euch S, Souchard JP, Cazaux S, Abderrabba M, Bouajila J. Phytochemical study and pharmaceutical properties of essential oils and organic extracts of two Eucalyptus species: E. stricklandii Maiden and E. brevifolia F.Muell. Journal of Essential Oil Research 2022. [DOI: 10.1080/10412905.2022.2058633] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Affiliation(s)
- Dorsaf Ben Hassine
- Laboratory Materials Molecules and Applications, IPEST, Carthage University, La Marsa, Tunis, Tunisia
- Food Industry Department, National Agronomy Institute of Tunisia, 43 Avenue Charles Nicolle, Carthage University, Ariana, Tunis, Tunisia
- Laboratoire de Génie Chimique, Université de Toulouse, CNRS, INPT, UPS, Toulouse, France
| | - Salma Kammoun El Euch
- Laboratoire de Génie Chimique, Université de Toulouse, CNRS, INPT, UPS, Toulouse, France
- Laboratory of Structural Organic Chemistry: Synthesis and Physicochemical Study, Faculty of Sciences of Tunis, El Manar University, Tunis, Tunisia
- Food Industries department, High Institute of Food Industries, El-Khadra City, Tunis, Tunisia
| | - Jean Pierre Souchard
- Laboratoire de Génie Chimique, Université de Toulouse, CNRS, INPT, UPS, Toulouse, France
| | - Sylvie Cazaux
- Laboratoire de Génie Chimique, Université de Toulouse, CNRS, INPT, UPS, Toulouse, France
| | - Manef Abderrabba
- Laboratory Materials Molecules and Applications, IPEST, Carthage University, La Marsa, Tunis, Tunisia
| | - Jalloul Bouajila
- Laboratoire de Génie Chimique, Université de Toulouse, CNRS, INPT, UPS, Toulouse, France
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Ghanem C, Taillandier P, Rizk Z, Nehme N, Souchard JP, El Rayess Y. Evolution of Polyphenols during Syrah Grapes Maceration: Time versus Temperature Effect. Molecules 2019; 24:molecules24152845. [PMID: 31387289 PMCID: PMC6695632 DOI: 10.3390/molecules24152845] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/09/2019] [Revised: 07/24/2019] [Accepted: 07/30/2019] [Indexed: 11/16/2022] Open
Abstract
The effect of maceration time and temperature on the phenolic compounds of Syrah grape musts was studied. Pre-fermentation cold (10 °C) and heat maceration (60, 70 and 80 °C) were applied and compared to traditional maceration (control, 25 °C). The macerations were monitored and the kinetic profile of the maceration was studied by taking samples at 0, 2, 4, 8, 24 and 48 h. The results showed that heat treatment had the most significant effect on the extraction of total polyphenol. A significant loss of anthocyanin content was observed when the maceration was extended beyond eight hours at high temperatures, while longer maceration times seemed to favor the extraction of tannins. A principal component analysis showed that independently of the vinification technique, and for the same grape varieties, different winegrowing regions and harvest years affected the phenolic composition of the grape skin.
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Affiliation(s)
- Chantal Ghanem
- Department of Agriculture and Food Engineering, School of Engineering, Holy Spirit University of Kaslik, Jounieh, Lebanon
- Lebanese Agricultural Research Institute, Fanar Station, P.O. Box 90-1965, Jdeidet El-Metn, Fanar, Lebanon
| | - Patricia Taillandier
- Université de Toulouse, INPT, UPS, CNRS, Laboratoire de Génie Chimique, 4 Allée Emile Monso, F-31432 Toulouse, France
| | - Ziad Rizk
- Department of Agriculture and Food Engineering, School of Engineering, Holy Spirit University of Kaslik, Jounieh, Lebanon
- Lebanese Agricultural Research Institute, Fanar Station, P.O. Box 90-1965, Jdeidet El-Metn, Fanar, Lebanon
| | - Nancy Nehme
- Faculty of Agricultural Engineering and Veterinary Medicine, Lebanese University, Dekwaneh, Lebanon
| | - Jean Pierre Souchard
- Université de Toulouse, INPT, UPS, CNRS, Laboratoire de Génie Chimique, 4 Allée Emile Monso, F-31432 Toulouse, France
| | - Youssef El Rayess
- Department of Agriculture and Food Engineering, School of Engineering, Holy Spirit University of Kaslik, Jounieh, Lebanon.
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Berkaoui M, Souchard JP, Massol M, Nepveu F. Hydroxyl radical scavenging activity of compounds with pharmaceutical interest: a quantitative analysis by ESR spectroscopy. ACTA ACUST UNITED AC 2017. [DOI: 10.1051/jcp/1994911799] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022]
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Jasanada F, Urizzi P, Souchard JP, Favre G, Boneu A, Nepveu F. Indium-111 labeling of low density lipoproteins (LDL) with the DTPA-bis(stearylamide) for tumor localization: first imaging and biodistribution in B16 tumored mice. ACTA ACUST UNITED AC 2017. [DOI: 10.1051/jcp/1996930128] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022]
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Souchard JP, Massol M, Nepveu F. Electronic spin resonance quantitative analysis of Mn(II) complexes antioxidative activity using phosphate or organic buffer. ACTA ACUST UNITED AC 2017. [DOI: 10.1051/jcp/1996930214] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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Urizzi P, Souchard JP, Tafani JAM, Coulais Y, Nepveu F. Attachment of radiometals to LDL with lipid analogues of EDTA or DTPA type complexing agents. Comparison of two labeling procedures. ACTA ACUST UNITED AC 2017. [DOI: 10.1051/jcp/1997940371] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022]
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Filali I, Belkacem MA, Ben Nejma A, Souchard JP, Ben Jannet H, Bouajila J. Synthesis, cytotoxic, anti-lipoxygenase and anti-acetylcholinesterase capacities of novel derivatives from harmine. J Enzyme Inhib Med Chem 2016; 31:23-33. [DOI: 10.3109/14756366.2016.1163342] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Affiliation(s)
- Insaf Filali
- Laboratoire de Chimie Hétérocyclique, Produits Naturels et Réactivité (CHPNR), Equipe Chimie Médicinale et Produits Naturels Département de Chimie, Faculté des Sciences de Monastir, Université de, Monastir, Tunisie, and
- Laboratoire des IMRCP UMR CNRS, Faculté de pharmacie de Toulouse, Université de Toulouse, Université Paul-Sabatier, Toulouse, France
| | - Mohamed Amine Belkacem
- Laboratoire de Chimie Hétérocyclique, Produits Naturels et Réactivité (CHPNR), Equipe Chimie Médicinale et Produits Naturels Département de Chimie, Faculté des Sciences de Monastir, Université de, Monastir, Tunisie, and
- Laboratoire des IMRCP UMR CNRS, Faculté de pharmacie de Toulouse, Université de Toulouse, Université Paul-Sabatier, Toulouse, France
| | - Aymen Ben Nejma
- Laboratoire de Chimie Hétérocyclique, Produits Naturels et Réactivité (CHPNR), Equipe Chimie Médicinale et Produits Naturels Département de Chimie, Faculté des Sciences de Monastir, Université de, Monastir, Tunisie, and
| | - Jean Pierre Souchard
- Laboratoire des IMRCP UMR CNRS, Faculté de pharmacie de Toulouse, Université de Toulouse, Université Paul-Sabatier, Toulouse, France
| | - Hichem Ben Jannet
- Laboratoire de Chimie Hétérocyclique, Produits Naturels et Réactivité (CHPNR), Equipe Chimie Médicinale et Produits Naturels Département de Chimie, Faculté des Sciences de Monastir, Université de, Monastir, Tunisie, and
| | - Jalloul Bouajila
- Laboratoire des IMRCP UMR CNRS, Faculté de pharmacie de Toulouse, Université de Toulouse, Université Paul-Sabatier, Toulouse, France
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Znati M, Ben Jannet H, Cazaux S, Souchard JP, Harzallah Skhiri F, Bouajila J. Antioxidant, 5-lipoxygenase inhibitory and cytotoxic activities of compounds isolated from the Ferula lutea flowers. Molecules 2014; 19:16959-75. [PMID: 25340301 PMCID: PMC6271101 DOI: 10.3390/molecules191016959] [Citation(s) in RCA: 45] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/27/2014] [Revised: 10/11/2014] [Accepted: 10/15/2014] [Indexed: 01/10/2023] Open
Abstract
A phytochemical investigation of the Ferula lutea (Poir.) Maire flowers has led to the isolation of a new compound, (E)-5-ethylidenefuran-2(5H)-one-5-O-β-d-glucopyranoside (1), designated ferunide, 4-hydroxy-3-methylbut-2-enoic acid (2), reported for the first time as a natural product, together with nine known compounds, verbenone-5-O-β-d-glucopyranoside (3), 5-O-caffeoylquinic acid (4), methyl caffeate (5), methyl 3,5-O-dicaffeoylquinate (6), 3,5-O-dicaffeoylquinic acid (7), isorhamnetin-3-O-α-l-rhamnopyranosyl(1→6)-β-d-glucopyranoside, narcissin (8), (−)-marmesin (9), isoimperatorin (10) and 2,3,6-trimethylbenzaldehyde (11). Compounds 3–10 were identified for the first time in Ferula genus. Their structures were elucidated by spectroscopic methods, including 1D and 2D NMR experiments, mass spectroscopy and X-ray diffraction analysis (compound 2), as well as by comparison with literature data. The antioxidant, anti-inflammatory and cytotoxic activities of isolated compounds were evaluated. Results showed that compound 7 exhibited the highest antioxidant activity with IC50 values of 18 ± 0.5 µmol/L and 19.7 ± 0.7 µmol/L by DPPH radical and ABTS radical cation, respectively. The compound 6 exhibited the highest anti-inflammatory activity with an IC50 value of 5.3 ± 0.1 µmol/L against 5-lipoxygenase. In addition, compound 5 was found to be the most cytotoxic, with IC50 values of 22.5 ± 2.4 µmol/L, 17.8 ± 1.1 µmol/L and 25 ± 1.1 µmol/L against the HCT-116, IGROV-1 and OVCAR-3 cell lines, respectively.
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Affiliation(s)
- Mansour Znati
- Université de Toulouse, Faculté de Pharmacie de Toulouse, Laboratoire des IMRCP UMR CNRS 5623, Université Paul-Sabatier, 118 route de Narbonne, F-31062 Toulouse, France.
| | - Hichem Ben Jannet
- Laboratoire de Chimie Hétérocyclique, Produits Naturels et Réactivité (CHPNR), Equipe Chimie Médicinale et Produits Naturels, Département de Chimie, Faculté des Sciences de Monastir, Université de Monastir, Avenue de l'Environnement, 5019 Monastir, Tunisia.
| | - Sylvie Cazaux
- Université de Toulouse, Faculté de Pharmacie de Toulouse, Laboratoire des IMRCP UMR CNRS 5623, Université Paul-Sabatier, 118 route de Narbonne, F-31062 Toulouse, France.
| | - Jean Pierre Souchard
- Université de Toulouse, Faculté de Pharmacie de Toulouse, Laboratoire des IMRCP UMR CNRS 5623, Université Paul-Sabatier, 118 route de Narbonne, F-31062 Toulouse, France.
| | - Féthia Harzallah Skhiri
- Laboratory of Genetic, Biodiversity and Valorization of Bioresources, Higher Institute of Biotechnology of Monastir, University of Monastir, 5019 Monastir, Tunisia.
| | - Jalloul Bouajila
- Université de Toulouse, Faculté de Pharmacie de Toulouse, Laboratoire des IMRCP UMR CNRS 5623, Université Paul-Sabatier, 118 route de Narbonne, F-31062 Toulouse, France.
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Khlifi D, Hamdi M, Hayouni AE, Cazaux S, Souchard JP, Couderc F, Bouajila J. Global chemical composition and antioxidant and anti-tuberculosis activities of various extracts of Globularia alypum L. (Globulariaceae) leaves. Molecules 2011; 16:10592-603. [PMID: 22183884 PMCID: PMC6264488 DOI: 10.3390/molecules161210592] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/03/2011] [Revised: 11/23/2011] [Accepted: 12/02/2011] [Indexed: 11/16/2022] Open
Abstract
In this work, an evaluation of the biological activities of Globularia alypum L. extracts and their global chemical composition was realized. Extracts from G. alypum were obtained by two extraction methods. The composition of polyphenols (8.5-139.95 g gallic acid equivalent/Kg of dry mass), tannins (1.39-18.65 g catechin equivalent/Kg of dry mass), anthocyanins (8.17-70.69 mg cyanidin equivalent/Kg of dry mass) and flavonoids (0.31-19.28 g quercetin equivalent/Kg of dry mass) was evaluated. The samples were subjected to a screening for their antioxidant activities using the DPPH* and ABTS*+ assays. For the first time, the anti-tuberculosis activity (H(37)Rv) for G. alypum was tested against Mycobacterium tuberculosis. The strongest antioxidant activity was obtained for the methanol extract (IC(50 ) = 15.58 ± 0.168 mg/L) and the best anti-tuberculosis activity was obtained for the petroleum ether extract (IC(50 )= 77 mg/L). We have found a positive correlation between the total phenolics content and the antioxidant activity R2 = 0.88 (DPPH*) and R2 = 0.97 (ABTS*+). We have found also a positive correlation between the flavonoid content and the antioxidant activity R2 = 0.91 (DPPH*) and R2 = 0.91 (ABTS*+).
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Affiliation(s)
- Daycem Khlifi
- Laboratoire des Interactions Moléculaires et Réactivité Chimique et Photochimique UMR CNRS 5623, University of Toulouse, University of Paul-Sabatier, 118 route de Narbonne, F-31062 Toulouse, France
- Laboratoire d’Ecologie et de Technologie Microbienne, Institut National des Sciences Appliquées et de la Technologie (INSAT), Université Carthage, B.P. 676, 1080 Tunis, Tunisia
| | - Moktar Hamdi
- Laboratoire d’Ecologie et de Technologie Microbienne, Institut National des Sciences Appliquées et de la Technologie (INSAT), Université Carthage, B.P. 676, 1080 Tunis, Tunisia
- Authors to whom correspondence should be addressed; (M.H.); (J.B.); Tel.: +21-671-708-559 (M.H.); +33-562-256-885 (J.B.)
| | - Akrem El Hayouni
- Authors to whom correspondence should be addressed; (M.H.); (J.B.); Tel.: +21-671-708-559 (M.H.); +33-562-256-885 (J.B.)
| | - Sylvie Cazaux
- Laboratoire des Interactions Moléculaires et Réactivité Chimique et Photochimique UMR CNRS 5623, University of Toulouse, University of Paul-Sabatier, 118 route de Narbonne, F-31062 Toulouse, France
| | - Jean Pierre Souchard
- Laboratoire des Interactions Moléculaires et Réactivité Chimique et Photochimique UMR CNRS 5623, University of Toulouse, University of Paul-Sabatier, 118 route de Narbonne, F-31062 Toulouse, France
| | - François Couderc
- Laboratoire des Interactions Moléculaires et Réactivité Chimique et Photochimique UMR CNRS 5623, University of Toulouse, University of Paul-Sabatier, 118 route de Narbonne, F-31062 Toulouse, France
| | - Jalloul Bouajila
- Laboratoire des Interactions Moléculaires et Réactivité Chimique et Photochimique UMR CNRS 5623, University of Toulouse, University of Paul-Sabatier, 118 route de Narbonne, F-31062 Toulouse, France
- Authors to whom correspondence should be addressed; (M.H.); (J.B.); Tel.: +21-671-708-559 (M.H.); +33-562-256-885 (J.B.)
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Babili FE, Bouajila J, Souchard JP, Bertrand C, Bellvert F, Fouraste I, Moulis C, Valentin A. Oregano: Chemical Analysis and Evaluation of Its Antimalarial, Antioxidant, and Cytotoxic Activities. J Food Sci 2011; 76:C512-8. [DOI: 10.1111/j.1750-3841.2011.02109.x] [Citation(s) in RCA: 93] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Bendaoud H, Romdhane M, Souchard JP, Cazaux S, Bouajila J. Chemical Composition and Anticancer and Antioxidant Activities of Schinus Molle L. and Schinus Terebinthifolius Raddi Berries Essential Oils. J Food Sci 2010; 75:C466-72. [DOI: 10.1111/j.1750-3841.2010.01711.x] [Citation(s) in RCA: 136] [Impact Index Per Article: 9.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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Hannedouche S, Souchard JP, Jacquemond-Collet I, Moulis C. Molluscicidal and radical scavenging activity of quinones from the root bark of Caryopteris x clandonensis. Fitoterapia 2002; 73:520-2. [PMID: 12385879 DOI: 10.1016/s0367-326x(02)00163-6] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
Abstract
In the search for new molluscicidal natural products, the activity of the chloroform extract of the root barks of Caryopteris x clandonensis was tested. The LC(100) was <5 ppm. The fractionation and purification of the extract afforded 15-deoxyfuerstione, fuerstione and alpha-caryopterone as the main compounds. These compounds were tested against the snail Bulinus truncatus, an intermediate host snail of a schistosomiasis parasite and showed strong molluscicidal activity with LC(100)<4 ppm. In addition, they were found to have potent radical scavenging properties on superoxide radical.
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Affiliation(s)
- S Hannedouche
- Laboratoire Pharmacophores Redox, Phytochimie et Radiobiologie, Faculté des Sciences Pharmaceutiques, 35 Chemin des Maraîchers, F-31062 Toulouse Cedex 04, France.
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Petit C, Bernardes-Génisson V, Hoffmann P, Souchard JP, Labidalle S. NO-Mediated aromatic nitration during decomposition of phenolic S-nitrosothiols in non-aqueous aerobic medium. Chem Pharm Bull (Tokyo) 2000; 48:1634-8. [PMID: 11086889 DOI: 10.1248/cpb.48.1634] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Five novel S-nitrosothiol compounds (6-10) derived from L-cysteine were generated in solution and their decomposition rate was followed by UV spectroscopy. In acetonitrile, compounds 9 and 10 were the most stable of this series with a half-life of 24 h. The final organic decomposition products of the five S-nitrosothiols were also analysed. Derivatives 8, 9, and 10, possessing a phenolic hydroxyl group, afforded an unexpected decomposition pathway, with nitration of aromatic ring occurring in non-aqueous media. A mechanism involving a phenoxy radical seems to be implicated.
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Affiliation(s)
- C Petit
- Laboratoire de Synthèse, Physico-Chimie et Radiobiologie, JE-175, Faculté des Sciences Pharmaceutiques, Université Paul Sabatier, Toulouse, France
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Barbacanne MA, Souchard JP, Darblade B, Iliou JP, Nepveu F, Pipy B, Bayard F, Arnal JF. Detection of superoxide anion released extracellularly by endothelial cells using cytochrome c reduction, ESR, fluorescence and lucigenin-enhanced chemiluminescence techniques. Free Radic Biol Med 2000; 29:388-96. [PMID: 11020659 DOI: 10.1016/s0891-5849(00)00336-1] [Citation(s) in RCA: 99] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
Endothelium produces oxygen-derived free radicals (nitric oxide, NO&z.rad;; superoxide anion, O(2)(*-)) which play a major role in physiology and pathology of the vessel wall. However, little is known about endothelium-derived O(2)(*-) production, particularly due to the difficulty in assessing O(2)(*-) when its production is low and to controversies recently raised about the use of lucigenin-enhanced chemiluminescence. We compared four techniques of O(2)(*-) assessment when its production is low. In the present study, we have compared ferricytochrome c reduction, electron spin resonance (ESR) spectroscopy using DMPO as spin trap, hydroethidine fluorescence, and lucigenin-enhanced chemiluminescence to assess O(2)(*-) production in cultured bovine aortic endothelial cells (BAEC). We focused our study on extracellular O(2)(*-) production because the specificity of the signal is provided by the use of superoxide dismutase, and this control cannot be obtained intracellularly. We found that the calcium ionophore A23187 dose-dependently stimulated O(2)(*-) production, with a good correlation between all four techniques. The signals evoked by postconfluent BAEC were increased 2- to 7-fold in comparison to just-confluent BAEC, according to the technique used. Ferricytochrome c 20 microm rather than at 100 microm appears more suitable to detect O(2)(*-). However, in the presence of electron donors such as NADH or NADPH, lucigenin-enhanced chemiluminescence generated high amounts of O(2)(*-). Thus, ferricytochrome c reduction, electron spin resonance (ESR), and hydroethidine fluorescence appear as adequate tools for the detection of extracellular endothelium-derived O(2)(*-) production, whereas lucigenin may be artifactual, even when a low concentration of lucigenin is employed.
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Affiliation(s)
- M A Barbacanne
- INSERM U397 et Laboratoire de Physiologie, et CJF-9107, Toulouse Cedex, France
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Abstract
The isolation of 6-O-sinapoyl sucrose (1) from Iberis amara seeds and an evaluation of its antioxidative properties in comparison with sinapic acid and ascorbic acid are reported.
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Affiliation(s)
- N Fabre
- Laboratoire Pharmacophores Redox Phytochimie et Radiobiologie, Faculté des Sciences Pharmaceutiques, 35 chemin des Maraîchers, 31062 Toulouse cedex 4, France.
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Barbacanne MA, Rami J, Michel JB, Souchard JP, Philippe M, Besombes JP, Bayard F, Arnal JF. Estradiol increases rat aorta endothelium-derived relaxing factor (EDRF) activity without changes in endothelial NO synthase gene expression: possible role of decreased endothelium-derived superoxide anion production. Cardiovasc Res 1999; 41:672-81. [PMID: 10435039 DOI: 10.1016/s0008-6363(98)00254-5] [Citation(s) in RCA: 63] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
Abstract
OBJECTIVES Estradiol is known to exert a protective effect against atherosclerosis, but the mechanism(s) whereby this protection is mediated is/are unclear. However, estradiol-treated castrated animals exhibit increased activity of endothelium-derived relaxing factor (EDRF), which could contribute to vasculoprotection. In the present work, we investigated the molecular mechanism(s) of the enhancement of EDRF activity in the thoracic aorta of oophorectomized female rats given 17 beta-estradiol (E2, 2 or 40 micrograms/kg/day) compared to those given a placebo. METHODS AND RESULTS The abundance in the thoracic aorta of NO synthase I, II and III mRNA (using RT-PCR) and of NO synthase I, II and III immunoreactive protein (using Western blotting) was unaltered by E2. NO synthase activity (based on arginine/citrulline conversion) in thoracic aorta homogenates did not differ significantly among the three groups, suggesting that NO production was not enhanced by E2. In contrast, lucigenin-enhanced chemiluminescence of aorta from the E2 group was decreased compared to that of the placebo group. Desendothelialization and exogenously added superoxide dismutase suggested that this difference was due to a decrease in extracellular endothelium-derived production of superoxide anion (O2-.). Experiments in cultured bovine aortic endothelial cells confirmed a decreased extracellular production of O2-. in response to ethinylestradiol (1 nM) using both lucigenin-enhanced chemiluminescence and ESR spectroscopy. Luminol-enhanced chemiluminescence revealed that ethinylestradioltreated cultured endothelial cells generated less peroxynitrite (the byproduct of NO-. and O2-. interaction) than control cells. CONCLUSION Estradiol increases rat aorta EDRF activity in the absence of changes in endothelial NO synthase gene expression. The decreased endothelium-derived generation of O2-. in response to estrogens could account for enhanced EDRF-NO bioactivity and decreased peroxynitrite release. All of these effects could contribute to the vascular protective properties of estrogens.
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Affiliation(s)
- M A Barbacanne
- INSERM U397 et Laboratoire de Physiologie, Institut Louis Bugnard, CHU Rangueil, Toulouse, France
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Souchard JP, Barbacanne MA, Margeat E, Maret A, Nepveu F, Arnal JF. Electron spin resonance detection of extracellular superoxide anion released by cultured endothelial cells. Free Radic Res 1998; 29:441-9. [PMID: 9925037 DOI: 10.1080/10715769800300491] [Citation(s) in RCA: 20] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
Abstract
OBJECTIVE AND METHODS Endothelium produces oxygen-derived free radicals which play a major role in vessel wall physiology and pathology. Whereas NO* production from endothelium has been extensively characterized, little is known about endothelium-derived O2-*. In the present study, we determined the O2-* production of bovine aortic endothelial cells (BAEC) using the spin trap 5,5-dimethyl-1 pyrroline-N-oxide (DMPO) and electron spin resonance (ESR) spectroscopy. RESULTS An ESR adduct DMPO-OH detected in the supernatant of BAEC after stimulation with the calcium ionophore A23187 originated from the trapping of extracellular O2-*, because coincubation with superoxide dismutase (30 U/ml) completely suppressed the ESR signal, whereas catalase (2000 U/ml) had no effect. A23187 stimulated extracellular O2-* production in a time- and dose-dependent manner. The coenzymes NADH and NADPH both increased the ESR signal, whereas a flavin antagonist, diphenylene iodonium, abolished the ESR signal. Phorbol myristate acetate potentiated, whereas bisindolylmaleimide I inhibited the A23187-stimulated O2-* production, suggesting the involvement of protein kinase C. These signals were not altered L-NAME, a NO-synthase inhibitor, suggesting that the endogenous production of NO* did not alter O2-* production. Finally, the amount of O2-* generated by A23187-stimulated post-confluent BAEC was one order of magnitude higher than that evoked by rat aortic smooth muscle cells stimulated under the same conditions.
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Affiliation(s)
- J P Souchard
- Laboratoire de Synthèse, Physico-Chimie et Radiobiologie, Université Paul Sabatier, Toulouse, France
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19
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Nepveu F, Souchard JP, Rolland Y, Dorey G, Spedding M. 2-2'-Pyridylisatogen, a selective allosteric modulator of P2 receptors, is a spin trapping agent. Biochem Biophys Res Commun 1998; 242:272-6. [PMID: 9446783 DOI: 10.1006/bbrc.1997.7949] [Citation(s) in RCA: 19] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Abstract
2-2'-Pyridylisatogen (PIT) has been reported to be a relatively selective irreversible antagonist of responses to adenosine 5'-triphosphate (ATP) in some smooth muscle preparations and to be an allosteric modulator of responses to ATP at recombinant P2Y receptors from chick brain. PIT is also a potent inhibitor of mitochondrial oxidative phosphorylation. However, the compound has a unique nitrone structure, so PIT was compared with dimethyl-pyrroline-N-oxide (DMPO) as a spin trapping agent for superoxide and hydroxyl radicals using electron spin resonance (ESR). PIT was found to be a potent spin trapper of both hydroxyl and superoxide radicals. PIT was more potent than DMPO to trap the hydroxyl radical forming an adduct which was more stable than the DMPO adduct in aqueous media. PIT was an effective spin trap of hydroxyl radical in aqueous buffer at pH 7.4. PIT more slowly trapped the superoxide anion but at concentrations where DMPO trapped none.
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Affiliation(s)
- F Nepveu
- Université Paul Sabatier, Faculté des Science Pharmaceutiques, Toulouse, France
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20
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Urizzi P, Souchard JP, Palevody C, Ratovo G, Hollande E, Nepveu F. Internalization of indium-labeled LDL through a lipid chelating anchor in human pancreatic-cancer cells as a potential radiopharmaceutical for tumor localization. Int J Cancer 1997; 70:315-22. [PMID: 9033634 DOI: 10.1002/(sici)1097-0215(19970127)70:3<315::aid-ijc12>3.0.co;2-e] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
Abstract
Low-density lipoproteins (LDL) labeled with indium via a lipid-chelating agent, the bis(stearylamide) of diethylenetri-aminepentaacetic acid (L), were evaluated as a potential radiopharmaceutical (111In-L-LDL) for tumor localization by studying their internalization in human pancreatic cancer cells (Capan-1). Using Dil-LDL (1,1'-dioctadecyl-3,3,3',3'-tetramethylindodicarbocyanine perchlorate-LDL), this cell line was shown to bind human LDL with a high-affinity saturable component and a low-affinity non-saturable (40%) component. The single saturable high-affinity binding site had a KD of 27.5 +/- 2.1 micrograms/ml and a maximal binding of 610 +/- 7.5 ng/ml protein. Electron-microscopic examination of the In-L-LDL particles revealed the peripheral distribution of the electron-dense indium atoms at the outer surface of LDL. The modified LDL were then shown to be internalized by the cells. After conjugation of In-L-LDL to colloidal gold to follow the different stages of internalization, electron-microscopic examination showed that the In-L-LDL gold conjugates were stuck to the external sheet of the plasma apical and microvilli membrane, into earlier and later endosomes and into multivesicular bodies, suggesting the penetration of the In-L-LDL particles into lysosomal vacuoles. The observation of In-L-LDL-gold conjugates in deep-seated cytoplasm suggests that LDL could be employed as a drug-transport vehicle for targeting cytotoxics or radionuclides close to the cell nucleus.
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Affiliation(s)
- P Urizzi
- Laboratoire de Synthèse, Physico-Chimie et Radiobiologie, Université Paul Sabatier, Toulouse, France
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Petit C, Hoffmann P, Souchard JP, Nepveu F, Labidalle S. [Thionitrites as potent donors of nitric oxide: example of S-nitroso- and S,S'-dinitroso-dihydrolipoic acids]. C R Seances Soc Biol Fil 1996; 190:641-50. [PMID: 9074729] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Abstract
Until recently, nitric oxide (NO.) was considered as a toxic radical, but it appears now as an essential messenger implicated in a wide range of biological processes, including immune system, cardiovascular system, and nervous system. An aspect of NO. metabolism in vivo is the formation of a variety of high and low molecular weight nitrosothiols. S-nitrosocysteine and S-nitrosoglutathione are among the biologically derived S-nitrosothiols that are postulated to be carriers of NO.. Although most of the S-nitrosothiols are unstable and spontaneously break down to produce NO. and a disulfide, some of them, including protein thiols, can show significant stability. These molecules are able to convey nitric oxide, that is, to keep, to carry, and then to generate NO. in physiological media, and might display pharmacological effects as potential vasodilators or neuroprotectors. Here, we present the development of new thionitrites R-S-NO having intrinsic antioxidant properties. We report the preparation, the characterization, and the stability studies in aqueous solutions of S-nitroso derivatives of dihydro-alpha-lipoic acid, known for its antioxidant properties.
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Affiliation(s)
- C Petit
- Laboratoire de Synthèse, Physico-Chimie et Radiobiologie-JE 175, Université Paul-Sabatier, Faculté des Sciences Pharmaceutiques, Toulouse, France
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Jasanada F, Urizzi P, Souchard JP, Le Gaillard F, Favre G, Nepveu F. Indium-111 labeling of low density lipoproteins with the DTPA-bis(stearylamide): evaluation as a potential radiopharmaceutical for tumor localization. Bioconjug Chem 1996; 7:72-81. [PMID: 8741993 DOI: 10.1021/bc950073l] [Citation(s) in RCA: 33] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
Abstract
In order to use the LDL receptor pathway to target radionuclides to cancer sites for imaging and diagnostic purposes, a labeling procedure of LDL with 111In using the DTPA-bis(stearylamide) (L) has been developed. This bifunctional ligand is intended to be incorporated into the phospholipid monolayer of LDL and to specifically chelate the In3+ cation at the surface. The ligand was incorporated into LDL in buffered medium with a 65-80% yield. The L-LDL samples are stable over a 24 h period when examined by dialysis, allowing their storage before indium-111 radiolabeling. In vitro studies of In-L-LDL particles show that indium labeling is rapidly achieved (1 h). More than 85% of the indium atoms are bound to the chelating functions of the incorporated DTPA derivatives and less than 10% to the nonspecific complexation sites of LDL (e.g., protein residues). After incubation in human serum, the indium activity recovered in the LDL fraction of In-L-LDL samples (95%) is much higher than in In-LDL samples (35%), pointing out the strong stabilizing chelating effect of the ligand. Competitive binding studies show that In-L-LDL are recognized by LDL receptors of A549 cells like native LDL when the In-L/LDL ratio varies from 5 to 30. All these in vitro experiments demonstrate that the In-L-LDL conjugates possess properties suitable for further work with in vivo experiments.
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Affiliation(s)
- F Jasanada
- Faculté de Pharmacie, Université Paul Sabatier, Toulouse, France
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Souchard JP, Limasset B, Michel F, Crastes de Paulet A, Labidalle S, Nepveu F. [Substituted methoxyphenol with antioxidative activity: correlation between physicochemical and biological results]. C R Seances Soc Biol Fil 1995; 189:1171-1181. [PMID: 8763040] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
Abstract
Guaiacol moiety has been found in antiinflammatory compounds present in traditional african or chinese medicine. As the activity of these products could be due to reactions with the reactive oxygen species (ROS) or enzymes involved in the inflammatory reaction, a comparative study has been done between biological and physico-chemical investigations. Antioxidant properties of six guaiacol derivatives were measured in vitro by the inhibition of cyclooxygenase activities in human platelets and of the release of ROS by human polymorphonuclear leucocytes (PMNs). PMNs were stimulated by the bacterial peptide N-fMetLeuPhe (FMLP) and the protein kinase C activator phorbol myristate acetate (PMA) using luminol as chemiluminescent probe. Electron Spin Resonance (ESR) and the technique of spin-trapping with 5,5-dimethyl-pyrroline-N-oxide (DMPO) have been used to quantify hydroxyl and superoxide scavenging activities. Hydroxyl radicals were generated by the Fenton's reaction (Fe2+/H2O2) and the superoxide anion by the acetaldehyde/xanthine oxydase system (AC/XOD). The PMNs tests revealed that curcumin and methyl ferulate appeared as the most active compounds. Platelet cycloxygenase activity was inhibited by curcumin and cyclovalone. ESR studies showed a better ROS scavenging activity for vanillin, methyl ferulate and curcumin. Whatever test we used, curcumin and methylferulate appeared as the most interesting antioxidative compounds.
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Affiliation(s)
- J P Souchard
- Physico-Chimie et Radiobiologie, Université Paul Sabatier, Toulouse
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Butour JL, Alvinerie P, Souchard JP, Colson P, Houssier C, Johnson NP. Effect of the amine non-leaving group on the structure and stability of DNA complexes with cis-[Pt(R-NH2)2(NO3)2]. Eur J Biochem 1991; 202:975-80. [PMID: 1765105 DOI: 10.1111/j.1432-1033.1991.tb16458.x] [Citation(s) in RCA: 34] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
The antitumor compound cis-[Pt(NH3)2Cl2] (cisplatin), conserves two ammine ligands during the reaction with its cellular target DNA. Modifications of these non-leaving groups change the antineoplastic properties of this compound and its genotoxic effects. It is therefore of interest to determine the influence of non-leaving groups on the structure and stability of DNA in vitro. We have investigated platinum-DNA adducts formed by cis-[Pt(R-NH2)2(NO3)2] (where R-NH2 = NH3, methylamine, cyclobutylamine, cyclopentylamine and cyclohexylamine) as a function of DNA binding. All compounds quantitatively reacted with DNA in less than 1 h at 37 degrees C. They formed bifunctional adducts with adjacent nucleotides judging from the displacement of the intercalating molecule ethidium bromide, ultraviolet absorption spectroscopy and circular dichroism. Substitution of a H on the NH3 ligand by alkyl groups dramatically destabilized the platinum-DNA complex. Thermal stability decreased progressively with an increasing number of carbon atoms, delta tm = -4.4 degrees C for 3 cyclohexylamine-platinum-DNA adducts/1000 nucleotides, conditions where cisplatin had no effect. DNA adducts with cyclobutylamine and cyclohexylamine ligands inhibited the hydrolysis of platinum-DNA complexes by S1 nuclease. Km for the digestion of DNA containing these lesions was 2.3 times greater than for cisplatin, indicating steric inhibition of enzyme-substrate complex formation. These results show that the non-leaving groups of substituted cis-Pt(II) compounds may destabilize DNA and interfere with protein-DNA interactions. These perturbations may have consequences for the genotoxic and antitumor activities of platinum compounds.
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Affiliation(s)
- J L Butour
- Laboratoire de Pharmacologie et de Toxicologie Fondamentales, Centre National de la Recherche Scientifique, Toulouse, France
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Affiliation(s)
- J P Souchard
- Laboratoire de Pharmacologie et de Toxicologie, Fondamentales du CNRS, Toulouse, France
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Affiliation(s)
- N Farrell
- Department of Chemistry, University of Vermont, Burlington 05405
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