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7. Biochemical Composition and Toxicity Assessment of Seaweeds from the Algerian Coast: Implications for Human Consumption and Marine Pollution

Author

Ousmer, Lila, primary, Madani, Zahia, additional, Dahim, Mohammed Abdullah, additional, Boussebaa, Walid, additional, Adouane, Meriem, additional, Ouali, Karima Ould, additional, Msela, Amine, additional, Dahmoune, Farid, additional, Aleya, Lotfi, additional, Trabelsi, Lamia, additional, houali, karim, additional, and Kadri, Nabil, additional

Published
2024
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9. Optimization of intracellular L-Asparaginase production by Streptomyces paulus CA01 isolated from wheat bran using the response surface methodology

Author

Chergui, Achour, primary, Trabelsi, Lamia, additional, Salem-Bekhit, Mounir M., additional, Mahmoud, Mohamed H., additional, Taha, Ehab I., additional, Ibrahim, Mohamed A., additional, Erto, Alessandro, additional, Imessaoudene, Ali, additional, Kecha, Mouloud, additional, Benguerba, Yacine, additional, and Houali, Karim, additional

Published
2023
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11. Tunisia

Author

Aleya, Lotfi, primary, Béjaoui, Béchir, additional, Dhib, Amel, additional, Ziadi, Boutheina, additional, Fertouna-Bellekhal, Mouna, additional, Helali, Mohamed-Amine, additional, Khedhri, Inès, additional, Oueslati, Walid, additional, Ennouri, Rym, additional, Yamashita, Cintia, additional, Zaaboub, Noureddine, additional, Othmani, Achref, additional, El Bour, Monia, additional, Trabelsi, Lamia, additional, Abdel-Daim, Mohamed M., additional, Galgani, François, additional, Martins, Maria Virgínia Alves, additional, and Turki, Souad, additional

Published
2019
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12. Contributors

Author

Aastrup, Peter, primary, Abdel-Daim, Mohamed M., additional, Aburto, Jaime A., additional, Acuña, Alicia, additional, Aguilera, Moisés A., additional, Alemu, Jahson, additional, Aleya, Lotfi, additional, Álvarez-Filip, L., additional, Alyomov, Sergey V., additional, Amara, Rachid, additional, Amouroux, David, additional, Anschutz, Pierre, additional, Arias, Andrés H., additional, Arvanitidis, Christos, additional, Ault, Jerald S., additional, Babatunde, Bolaji Benard, additional, Barros, Vicente, additional, Bazterrica, María Cielo, additional, Béjaoui, Béchir, additional, Bekkby, Trine, additional, Bełdowski, Jacek, additional, Bennett, Rodolfo C., additional, Beszczyńska-Möller, Agnieszka, additional, Bilkovic, Donna Marie, additional, Boero, Ferdinando, additional, Boertmann, David, additional, Borja, Angel, additional, Bortolus, Alejandro, additional, Botté, Sandra E., additional, Bravo, Luis, additional, Broitman, Bernardo R., additional, Brugnoli, Ernesto, additional, Burd, Brenda, additional, Burkholder, JoAnn M., additional, Cahoon, Lawrence B., additional, Calabrese, Sara, additional, Cao, Yiping, additional, Cardoso, Patricia G., additional, Cardoza, Norving J.T., additional, Chiappa-Carrara, Xavier, additional, Chiotoroiu, Brindusa Cristina, additional, Christensen, Tom, additional, Codignotto, Jorge O., additional, Cook, Sarah, additional, Danovaro, Roberto, additional, Dauvin, Jean-Claude, additional, de Frias Martins, Antonio M., additional, De Marco, Silvia G., additional, Delgado, Juan Domingo, additional, Deppeler, Stacy L., additional, Dhib, Amel, additional, Diop, Mamadou, additional, Diop, Cheikh, additional, Dolbeth, Marina, additional, Duman, Muhammet, additional, El Bour, Monia, additional, Ennouri, Rym, additional, Enríquez, Cecilia, additional, Eronat, Hüsnü, additional, Fach, Bettina, additional, Fernández Severini, Melisa D., additional, Fertouna-Bellekhal, Mouna, additional, Fiori, Sandra, additional, Fourqurean, James W., additional, Frigstad, Helene, additional, Fritt-Rasmussen, Janne, additional, Galgani, François, additional, García, Rafael A., additional, Garza-Pérez, R., additional, Gavio, María Andrea, additional, Gaymer, Carlos F., additional, Gelcich, Stefan, additional, Gerpe, Marcela S., additional, Giadom, Ferdinand Dumbari, additional, Giarratano, Erica, additional, Gil, Mónica Noemí, additional, Gobin, Judith, additional, Gómez-Gesteira, Moncho, additional, Góngora, Gongora María Eva, additional, Gore, Shannon, additional, Green, Norman, additional, Grogan, Amy E., additional, Guinder, Valeria A., additional, Gutiérrez, Juan Manuel, additional, Hagen, Anders G., additional, Harman, Christopher, additional, Hatzianestis, Ioannis, additional, Havens, Kirk J., additional, Hedeholm, Rasmus, additional, Helali, Mohamed-Amine, additional, Hershner, Carl H., additional, Holmes, Kieth, additional, Jackson, Jennifer, additional, Jameson, Stephen C., additional, Kapiris, Kostas, additional, Kaste, Øyvind, additional, Kędra, Monika, additional, Khedhri, Inès, additional, Kikuchi, Ruy K.P., additional, Kocak, Ferah, additional, Kucuksezgin, Filiz, additional, Kuliński, Karol, additional, La Colla, Noelia, additional, Leão, Zelinda M.A.N., additional, Lirman, Diego, additional, Logan, Alan, additional, López, Boris A., additional, López Abbate, María Celeste, additional, Lorenz, Jerome J., additional, Lovrich, Gustavo, additional, Mallin, Michael A., additional, Maragou, Panagiota, additional, Marcovecchio, Jorge E., additional, Ismael, Marino-Tapia, additional, Martins, Maria Virgínia Alves, additional, McLaughlin, Karen, additional, Merkel, Flemming, additional, Mitchell, Molly M., additional, Mohammed, Azad, additional, Mohammed, Terry, additional, Montecino, Vivian, additional, Monti, Alejandro J., additional, Moore, Shelly, additional, Morrison, Adele K., additional, Morton, Brian, additional, Mosbech, Anders, additional, Muniz, Pablo, additional, Myers, Andrew, additional, Narvarte, Maite, additional, Oliva, Ana L., additional, Oliveira, Marília D.M., additional, Osadchaya, Tatyana S., additional, Othmani, Achref, additional, Ouddane, Baghdad, additional, Oueslati, Walid, additional, Oug, Eivind, additional, Panayotidis, Panayotis, additional, Papadopoulos, Vassilis P., additional, Papiol, Vanesa, additional, Pascual, Marcela, additional, Pauchard, Aníbal, additional, Pavlidou, Alexandra, additional, Paximadis, Giorgos, additional, Pazi, Idil, additional, Pempkowiak, Janusz, additional, Quintino, Victor, additional, Rabalais, Nancy N., additional, Ramos, Marcel, additional, Rangelov, Miroslav, additional, Raymond, Tania, additional, Relvas, Paulo, additional, Reyes-Hernández, Cristóbal, additional, Riera, Rodrigo, additional, Rigét, Frank, additional, Rioja-Nieto, R., additional, Rivas, Andrés L., additional, Rodríguez, Diego H., additional, Rutllant, José A., additional, Sáez, Claudio A., additional, Sakellariou, Dimitris, additional, Salihoglu, Baris, additional, Salomidi, Maria, additional, Sanger, Denise M., additional, Santos, Rui, additional, Schenke, Ricardo Delfino, additional, Schiff, Kenneth, additional, Sealey, Kathleen Sullivan, additional, Silva, Alexandra, additional, Simboura, Nomiki, additional, Smith, Struan R., additional, Smith, Erik, additional, Sousa, Ronaldo, additional, Spetter, Carla V., additional, Stark, Jonathan S., additional, Stevens, Kara, additional, Szymczycha, Beata, additional, Tagliorette, Alicia, additional, Thiel, Martin, additional, Thomson, Richard, additional, Todorova, Nadezhda, additional, Gonul, Tolga, additional, Trabelsi, Lamia, additional, Trannum, Hilde, additional, Turki, Souad, additional, Turner, R. Eugene, additional, Ugarte, Fernando, additional, Uyarra, María C., additional, Valdés, Luis, additional, Valdivia, Nelson, additional, Vasilev, Vasil, additional, Venturini, Natalia, additional, Warren, Tammy, additional, Wegeberg, Susse, additional, White, Stephanie, additional, Wood, Kathleen, additional, Wynne, Stuart P., additional, Yamashita, Cintia, additional, Zaaboub, Noureddine, additional, Zabbey, Nenibarini, additional, Zaborska, Agata, additional, Zalba, Sergia, additional, and Ziadi, Boutheina, additional

Published
2019
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18. Tunisia

Author

Aleya, Lotfi, Béjaoui, Béchir, Dhib, Amel, Ziadi, Boutheina, Fertouna-Bellekhal, Mouna, Helali, Mohamed-Amine, Khedhri, Ines, Oueslati, Walid, Ennouri, Rym, Yamashita, Cintia, Zaaboub, Noureddine, El Bour, Monia, Trabelsi, Lamia, Abdel-Daim, Mohamed, Galgani, François, Martins, Maria Virginia Alves, Turki, Souad, Othmani, Achref, Laboratoire Chrono-environnement - CNRS - UBFC (UMR 6249) (LCE), Centre National de la Recherche Scientifique (CNRS)-Université de Franche-Comté (UFC), Université Bourgogne Franche-Comté [COMUE] (UBFC)-Université Bourgogne Franche-Comté [COMUE] (UBFC), Institut National des Sciences et Technologies de la Mer [Salammbô] (INSTM), Institut National des Sciences et Technologies de la Mer, La Goulette, Tunisie, Institut Supérieur de Pêche et d'Aquaculture de Bizerte, Tunisie, Université de Tunis El Manar (UTM), Universidade do Estado do Rio de Janeiro [Rio de Janeiro] (UERJ), Suez Canal University. Ismailia. Egypt, and IFREMER/Laboratoire Environnement Ressources PAC/Corse Imm Agostini, Bastia, France

Subjects
[SDE]Environmental Sciences, ComputingMilieux_MISCELLANEOUS
Abstract

International audience

Published
2019

19. Therapeutic properties in Tunisian hot springs: first evidence of phenolic compounds in the cyanobacterium Leptolyngbya sp. biomass, capsular polysaccharides and releasing polysaccharides

Author

Trabelsi, Lamia, Mnari, Amira, Abdel-Daim, Mohamed M., Abid-Essafi, Salwa, Aleya, Lotfi, National Institute of Marine Sciences ( INSTM ), Biochemistry Laboratory, Faculty of Medicine of Monastir, Biochemistry Laboratory, Suez Canal University. Ismailia. Egypt, Faculty of Dentisty, Monastir, Laboratoire Chrono-environnement ( LCE ), Université Bourgogne Franche-Comté ( UBFC ) -Centre National de la Recherche Scientifique ( CNRS ) -Université de Franche-Comté ( UFC ), National Institute of Marine Sciences (INSTM), Faculté de Médecine Dentaire de Monastir [Tunisie] (FMDM), Laboratoire Chrono-environnement - CNRS - UBFC (UMR 6249) (LCE), Centre National de la Recherche Scientifique (CNRS)-Université de Franche-Comté (UFC), and Université Bourgogne Franche-Comté [COMUE] (UBFC)-Université Bourgogne Franche-Comté [COMUE] (UBFC)

Subjects
Flavonoids, Phenolic profile, Balneology, Cyanobacteria, Carotenoids, Antioxidants, Hot Springs, [ SDE ] Environmental Sciences, Phytochemical content, Complementary and alternative medicine, Phenols, Polysaccharides, Leptolyngbya sp, [SDE]Environmental Sciences, Antioxidant activities, Hot spring water, Biomass, Chromatography, High Pressure Liquid, Research Article
Abstract

International audience; Background: In Tunisia, the use of hot spring waters for both health and recreation is a tradition dating back to Roman times. In fact, thermal baths, usually called “Hammam” are recommended as a therapeutic and prophylactic measure against many types of illness and toxicity. While the chemical concentration of thermal water is admittedly associated with its therapeutic effects, the inclusion in spa waters of efficient bioproduct additives produced by photosynthetic microorganisms and that act against oxidative stress may comprise a significant supplementary value for thermal centers. The aim of this study was to investigate the antioxidant potential of the Tunisian thermophilic cyanobacterium Leptolyngbya sp. and to determine its phytochemical constituents and phenolic profile.Methods: BME (Biomass Methanolic Extract), CME (Capsular polysaccharides Methanolic Extract) and RME (Releasing polysaccharides Methanolic Extract) of Leptolyngbya sp. were examined for their antioxidant activities by means of DPPH, hydroxyl radical scavenging and ferrous ion chelating assays. Their total phenols, flavonoids, carotenoids, Mycosporine-like amino acids (MAAs) and vitamin C contents, as well as their phenolic profiles were also determined.Results: BME has the highest content of phenols (139 ± 1.2 mg/g), flavonoids (34.9 ± 0.32 mg CEQ/g), carotenoids (2.03 ± 0.56 mg/g) and vitamin C (15.7 ± 1.55 mg/g), while the highest MAAs content (0.42 ± 0.03 mg/g) was observed in CME. BME presented both the highest DPPH and hydroxyl radical scavenging ability with an IC50 of 0.07 and 0. 38 mg/ml, respectively. The highest ferrous chelating capacity was detected in CME with an IC50 = 0.59 mg/ml. Phenolic profiles revealed the presence of 25 phenolic compounds with the existence of hydroxytyrosol, oleuropein,resveratrol and pinoresinol.Conclusion: The study demonstrated that the cyanobacterium Leptolyngbya sp. possesses abundant natural antioxidant products which may have prophylactic and therapeutic effects on many types of illness and toxicity. The present findings not only explain and reinforce the rationale behind traditional therapeutic practices in Tunisia in the exploitation of the country’s hot springs, but support the addition of Leptolyngbya to thermal waters as a means to enhance the value and reputation of the curative nature of Tunisian thermal waters.

Published
2016

20. Modeling growth and photosynthetic response in Arthrospira platensis as function of light intensity and glucose concentration using factorial design

Author

Ammar Jihene, Ben Ouada Hatem, Ghozzi Khemissa, Omrane Hela, Challouf Rafika, Trabelsi Lamia, Ben Dhiab Rym, Yahia Ali, and Ghenim Nejeh

Subjects
Light intensity, Animal science, Botany, Respiration, Plant physiology, Plant Science, Factorial experiment, Response surface methodology, Aquatic Science, Biology, Photosynthesis, Photoheterotroph, Mixotroph
Abstract

Combined effect of light intensity and glucose concentration on Arthrospira platensis growth and photosynthetic response was evaluated using a 32 factorial design. This design was carried out with light levels of 50, 100, and 150 µmol photons m−2 s−1 and glucose concentrations of 0.5, 1.5, and 2.5 g L−1. Results from the response surface methodology were that the highest level of light intensity and glucose concentration improved biomass (1.33 g L−1), maximum specific growth rate (0.49 day−1), and net photosynthetic rate (139.89 µmol O2 mg Chl−1 h−1). Furthermore, the interaction of both factors showed that at low light, glucose had a low effect on maximum biomass and maximal net photosynthetic rate. However, at the highest light levels, the effect of glucose was more sensitive and the increase of glucose concentration increased the levels of all responses. The rates of the instantaneous relative growth, net photosynthesis, and dark respiration of growth cultures showed two different phases in mixotrophic condition. The first was distinguished by the preponderance of the photoautotrophic mode; the second was based mainly on photoheterotrophy.

Published
2010

21. Optimization of intracellular L-Asparaginase production by Streptomyces paulusCA01 isolated from wheat bran using the response surface methodology

Author

Chergui, Achour, Trabelsi, Lamia, Salem-Bekhit, Mounir M., Mahmoud, Mohamed H., Taha, Ehab I., Ibrahim, Mohamed A., Erto, Alessandro, Imessaoudene, Ali, Kecha, Mouloud, Benguerba, Yacine, and Houali, Karim

Abstract

AbstractThis study aimed to enhance the production of the intracellular L-asparaginase bacterial enzyme, which is known to impede the growth of cancer cells, by optimizing the culture conditions. In the present study, we exploited the ability of a new Actinomycete strain isolated from a food byproduct, wheat bran, to produce the desired enzyme. Streptomyces paulusCA01 was identified following morphological, biochemical, and molecular testing, and its total L-asparaginase activity was evaluated using ADS agar. Intracellular L-asparaginase activity was measured on the same medium using the well-diffusion method and was quantified by Nesslerization. A Box-Behnken design was employed to optimize the production of the enzyme by analyzing the effect of three factors: temperature, L-Asparagine concentration and glucose concentration. The ADS base medium, which was previously optimized and consisted of starch, K2HPO4, and MgSO4, was also included in the analysis. The optimal conditions for intracellular L-asparaginase production were temperature of 27.5 °C, L-Asparagine concentration of 1.19%, glucose concentration of 0.26% and ADS base medium composition, with which we achieved an incrase in enzymatic activity from 3.20 IU/mL to 8.39 IU/mL. This study indicates that Algerian wheat bran is a potential source of Streptomyces paulusCA01, which produces the bacterial intracellular L-asparaginase enzyme and also opens up prospects for the exploitation of agricultural by-products as sources of interesting micro-organisms. Despite the complex process of cell lysis required for its production, intracellular L-asparaginase is important and depends on culture conditions, making its optimization and increased yield feasible.

Published
2023
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24. [Embolization of head and neck hypervascular lesions. A retrospective study of 5 cases]

Author

Rajhi, Hatem, Trabelsi, Lamia, Chammakhi, Raouf, Salem, Azza, Zitouni, Karima, Ezzine, Nadia, Mnif, Najla, and Hamza, Radhi

Subjects
Adult, Intracranial Arteriovenous Malformations, Male, Treatment Outcome, Adolescent, Humans, Female, Middle Aged, Embolization, Therapeutic, Retrospective Studies
Abstract

Embolisation of head and neck hypervascular tumours and arterioveinous malformations (AVMs) is now a well-established therapeutic procedure. The purpose of this study was to analyse the technique and to evaluate the safety and value of preoperative embolization of hypervascular lesions. We retrospectively reviewed the records of 5 patients, agged between 14 and 47 years, with hypervascular tumours and AVMs in the head and neck. Lesions were distributed as follow: nasal angiofibroma (n = I), nasal angioleiomyoma (n = I), nasopharyngeal angiofibroma (n = I), aneurysmal bone cyst in the posterior element of the second cervical vertebra (n = I) and AVM of the inferior lip (n = I). Angiography and embolization were carried out at the same time. Complete exclusion of lesions was obtained without any complications. Complementary surgical resection was performed with not notable blood loss.

Published
2005

30. Anti-leishmanial activities of Olea europaea subsp. laperrinei extracts.

Author

Lahcene S, Trabelsi L, M Salem-Bekhit M, Shazly GA, Mohammed Refat M Selim H, Mohammed Alehaidib S, Sebbane H, Msela A, Benguerba Y, and Houali K

Subjects
Humans, Quercetin chemistry, Plant Extracts chemistry, Antioxidants, Polyphenols pharmacology, Tannins, Gallic Acid, Plant Leaves, Olea chemistry, Leishmania infantum
Abstract

Leishmaniasis is an infectious disease that is often fatal in affected patients and represents a major public health problem. At present, no vaccine is available, and the drug treatments used are costly, long, and have numerous side effects, they also present variable effectiveness, frequent relapses, and a more and more marked resistance towards the parasites. Thus, new therapeutic strategies are urgently needed, and they are mainly based on the research of active natural products. The objective of our study is the chemical characterization and the quantification of the polyphenol contents contained in the EAF and EAT extracts of the Laperrine olive tree and the evaluation of their antileishmania effect against Leishmania infantum. The quantification of polyphenols, flavonoids and total tannins shows a higher content in the leaf extract. We find respectively 776.76±30.64 mg gallic acid equivalent/g DR; 114.35±14.12 mg quercetin equivalent/g DR and 214.89±.17 mg tannic acid equivalent/g DR.The chemical characterization of Olea europaea subsp. laperrinei extracts show the presence of numerous antileishmanial biomolecules such as oleuropein, hydroxytyrosol, rutin, gallic acid, cafeic acid, rosmarinic acid, and quercetin.In this context, we are testing the in vitro leishmanicidal effect of Laperrine olive tree extracts. The results obtained are promising and highlight the effectiveness of the tested extracts against the promastigote form of Leishmania infantum. Indeed, the LD50 is obtained with the leaf extract at a concentration of 7.52±2.71 µl/ml.

Published
2023
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31. Evaluating the Synergistic Potency of Essential Oils and Antibiotics Against Klebsiella pneumoniae BLSE Strains.

Author

Bariz K, Trabelsi L, Lahcene S, Salem-Bekhit MM, Elossaily GM, Ali Alzahrani H, Alharbi OO, Abbaci M, Abbaci H, Benguerba Y, and Houali K

Subjects
Klebsiella pneumoniae, Eugenol, Thymol, Bacteria, Microbial Sensitivity Tests, Anti-Bacterial Agents pharmacology, Oils, Volatile pharmacology, Oils, Volatile chemistry
Abstract

Klebsiella pneumoniae producing extended-spectrum β-lactamases (ESBL) continues to pose huge therapeutic challenges in the treatment of infections, primarily urinary infections, due to its multidrug resistance to antibiotics. Therefore, there is a need for research on this topic to investigate ways to reduce the spread of antibiotic resistance, identify novel therapeutic approaches to treat these infections and gain a better understanding of the mechanisms of resistance. In this context, this study aimed to analyze the chemical composition of essential oils (EOs) of Thymus algeriensis, Syzygium aromaticum, and Eucalyptus globulus and assess their activity against K. pneumoniae ESBL strains, as well as the interaction type between these EOs and antibiotics used for the treatment of K. pneumoniae ESBL infections. The composition of the EOs was determined by gas chromatography-mass spectrometry (GC-MS). The activity of EOs was tested using the disc diffusion and liquid microdilution methods. The type of interaction between EOs and antibiotics was studied using the agar disk diffusion and chessboard methods. The analysis of the EO of T. algeriensis showed that the main compounds were thymol (23.14%), linalool (18.44%), and p-cymene (16.17%). The main constituents of EO of E. globulus were eucalyptol (54.29%), α-pinene (17.32%), aromadendrene (7.02%), and pinocarveol (6.32%). As for the EO of S. aromaticum, the major constituents were eugenol (80.46%) and eugenol acetate (16.23%). Results of the activity tests showed that all three EOs were active against the tested strains, with inhibition diameters ranging from 7.39±0.44mm to 32.4±1.05mm and minimum inhibitory concentrations (MICs) varying from 2 to 441.5±5.66 mg/ml. A synergistic interaction was obtained between amoxicillin-clavulanic acid and T. algeriensis EO against two strains of K. pneumoniae ESBL. These results demonstrate the potential of our EOs to inhibit multi-resistant pathogenic ESBL strains, as well as their synergistic interaction with antibiotics used in therapy, which could be an alternative to the use of antibiotics alone in treatment to fight against these multi-resistant pathogenic bacteria.

Published
2023
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