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3. Phylogeny, evolution and classification of the Branchiopoda (Crustacea)

Author

Negrea, S., Botnariuc, N., and Dumont, H.J.

Subjects
Crustacea [crustaceans], Evolution, Cyclesteria hislopi, Classification, Branchiopoda [branchiopods], Phylogeny
Abstract

We present a cladistic analysis of all branchiopod groups, using a total of 42 morphological characters. The class Branchiopoda is composed of five superorders and 11 orders (nine recent, two fossil). The orders Ctenopoda, Anomopoda and Onychopoda form a monophyletic group, combined in the superorder Cladocera. The order Haplopoda, the fourth so-called cladoceran order (s. lat.), belongs to a new monotypic superorder, the Leptodorida. The circumtropical Cyclesteria hislopi is the sole representative of a new conchostracan order, the Cyclestherida.

Published
1999

4. Poster Session 3: Friday 9 December 2011, 08:30-12:30 * Location: Poster Area

Author

Kenny, C., primary, Adhya, S., additional, Dworakowski, R., additional, Brickham, B., additional, Maccarthy, P., additional, Monaghan, M., additional, Guzzo, A., additional, Innocenti, F., additional, Vicidomini, S., additional, Lazzeretti, D., additional, Squarciotta, S., additional, De Villa, E., additional, Donnini, C., additional, Bulletti, F., additional, Guerrini, E., additional, Pini, R., additional, Bendjelid, K., additional, Viale, J., additional, Duperret, S., additional, Piriou, V., additional, Jacques, D., additional, Shahgaldi, K., additional, Silva, C., additional, Pedro, F., additional, Deister, L., additional, Brodin, L.-A., additional, Sahlen, A., additional, Manouras, A., additional, Winter, R., additional, Berjeb, N., additional, Cimadevilla, C., additional, Dreyfus, J., additional, Cueff, C., additional, Malanca, M., additional, Chiampan, A., additional, Vahanian, A., additional, Messika-Zeitoun, D., additional, Muraru, D., additional, Peluso, D., additional, Dal Bianco, L., additional, Beraldo, M., additional, Solda', E., additional, Tuveri, M., additional, Cucchini, U., additional, Al Mamary, A., additional, Badano, L., additional, Iliceto, S., additional, Almuntaser, I., additional, King, G., additional, Norris, S., additional, Daly, C., additional, Ellis, E., additional, Murphy, R., additional, Erdei, T., additional, Denes, M., additional, Kardos, A., additional, Foldesi, C., additional, Temesvari, A., additional, Lengyel, M., additional, Bouzas Mosquera, A., additional, Broullon, F., additional, Alvarez-Garcia, N., additional, Peteiro, J., additional, Barge-Caballero, G., additional, Lopez-Perez, M., additional, Lopez-Sainz, A., additional, Castro-Beiras, A., additional, Luotolahti, M., additional, Luotolahti, H., additional, Kantola, I., additional, Viikari, J., additional, Andersen, M., additional, Ersboell, M., additional, Bro-Jeppesen, J., additional, Gustafsson, F., additional, Koeber, L., additional, Hassager, C., additional, Moller, J., additional, Coisne, D., additional, Diakov, C., additional, Vallet, F., additional, Lequeux, B., additional, Blouin, P., additional, Christiaens, L., additional, Esposito, R., additional, Santoro, A., additional, Schiano Lomoriello, V., additional, Raia, R., additional, Santoro, C., additional, De Simone, G., additional, Galderisi, M., additional, Abdula, G., additional, Kosmala, W., additional, Szczepanik-Osadnik, H., additional, Przewlocka-Kosmala, M., additional, Mysiak, A., additional, O' Moore-Sullivan, T., additional, Marwick, T., additional, Tan, Y. T., additional, Wenzelburger, F., additional, Leyva, F., additional, Sanderson, J., additional, Pichler, P., additional, Syeda, B., additional, Hoefer, P., additional, Zuckermann, A., additional, Binder, T., additional, Fijalkowski, M., additional, Koprowski, A., additional, Galaska, R., additional, Blaut, K., additional, Sworczak, K., additional, Rynkiewicz, A., additional, Lee, S., additional, Kim, W., additional, Jung, L., additional, Yun, H., additional, Song, M., additional, Ko, J., additional, Khalifa, E. A., additional, Szymanski, P., additional, Lipczynska, M., additional, Klisieiwcz, A., additional, Hoffman, P., additional, Jorge, C., additional, Silva Marques, J., additional, Robalo Martins, S., additional, Calisto, C., additional, Mieiro, M., additional, Vieira, S., additional, Correia, M., additional, Carvalho De Sousa, J., additional, Almeida, A., additional, Nunes Diogo, A., additional, Park, C., additional, March, K., additional, Tillin, T., additional, Mayet, J., additional, Chaturvedi, N., additional, Hughes, A., additional, Di Bello, V., additional, Giannini, C., additional, Delle Donne, M., additional, De Sanctis, F., additional, Spontoni, P., additional, Cucco, C., additional, Corciu, A., additional, Grigoratos, C., additional, Bogazzi, F., additional, Balbarini, A., additional, Enescu, O., additional, Suran, B., additional, Florescu, M., additional, Cinteza, M., additional, Vinereanu, D., additional, Higuchi, Y., additional, Iwakura, K., additional, Okamura, A., additional, Date, M., additional, Fujii, K., additional, Cortez-Dias, N., additional, Silva, D., additional, Carrilho-Ferreira, P., additional, Magalhaes, A., additional, Ribeiro, S., additional, Goncalves, S., additional, Fiuza, M., additional, Pinto, F., additional, Placido, R., additional, Bordalo, A., additional, Grzywocz, P., additional, Mizia-Stec, K., additional, Chudek, J., additional, Gasior, Z., additional, Maceira Gonzalez, A. M., additional, Cosin Sales, J., additional, Dalli, E., additional, Igual, B., additional, Diago, J., additional, Aguilar, J., additional, Ruvira, J., additional, Cimino, S., additional, Pedrizzetti, G., additional, Tonti, G., additional, Canali, E., additional, Petronilli, V., additional, Boccalini, F., additional, Mattatelli, A., additional, Hiramoto, Y., additional, Iacoboni, C., additional, Agati, L., additional, Trifunovic, D., additional, Ostojic, M., additional, Vujisic-Tesic, B., additional, Petrovic, M., additional, Nedeljkovic, I., additional, Banovic, M., additional, Boricic-Kostic, M., additional, Draganic, G., additional, Tesic, M., additional, Gavina, C., additional, Lopes, R., additional, Lourenco, A., additional, Almeida, J., additional, Rodrigues, J., additional, Pinho, P., additional, Zamorano, J., additional, Leite-Moreira, A., additional, Rocha-Goncalves, F., additional, Clavel, M.-A., additional, Capoulade, R., additional, Dumesnil, J., additional, Mathieu, P., additional, Despres, J.-P., additional, Pibarot, P., additional, Bull, S., additional, Pitcher, A., additional, Augustine, D., additional, D'arcy, J., additional, Karamitsos, T., additional, Rai, A., additional, Prendergast, B., additional, Becher, H., additional, Neubauer, S., additional, Myerson, S., additional, Magne, J., additional, Donal, E., additional, Davin, L., additional, O'connor, K., additional, Pirlet, C., additional, Rosca, M., additional, Szymanski, C., additional, Cosyns, B., additional, Pierard, L., additional, Lancellotti, P., additional, Calin, A., additional, Popescu, B., additional, Beladan, C., additional, Enache, R., additional, Lupascu, L., additional, Sandu, C., additional, Ginghina, C., additional, Kamperidis, V., additional, Hadjimiltiadis, S., additional, Sianos, G., additional, Anastasiadis, K., additional, Grosomanidis, V., additional, Efthimiadis, G., additional, Karvounis, H., additional, Parharidis, G., additional, Styliadis, I., additional, Gonzalez Canovas, C., additional, Munoz-Esparza, C., additional, Bonaque Gonzalez, J., additional, Fernandez, A., additional, Salar Alcaraz, M., additional, Saura Espin, D., additional, Pinar Bermudez, E., additional, Oliva-Sandoval, M., additional, De La Morena Valenzuela, G., additional, Valdes Chavarri, M., additional, Brochet, E., additional, Lepage, L., additional, Attias, D., additional, Detaint, D., additional, Himbert, D., additional, Iung, B., additional, Pirat, B., additional, Little, S., additional, Chang, S., additional, Tiller, L., additional, Kumar, R., additional, Zoghbi, W., additional, Lee, A. P.-W., additional, Hsiung, M., additional, Wan, S., additional, Wong, R., additional, Luo, F., additional, Fang, F., additional, Xie, J., additional, Underwood, M., additional, Sun, J., additional, Yu, C., additional, Jansen, R., additional, Tietge, W., additional, Sijbrandij, K., additional, Cramer, M., additional, De Heer, L., additional, Kluin, J., additional, Chamuleau, S. A. J., additional, Oliveras Vila, T., additional, Ferrer Sistach, E., additional, Delgado Ramis, L., additional, Lopez Ayerbe, J., additional, Vallejo Camazon, N., additional, Gual Capllonch, F., additional, Garcia Alonso, C., additional, Teis Soley, A., additional, Ruyra Baliarda, X., additional, Bayes Genis, A., additional, Negrea, S., additional, Alexandrescu, C., additional, Bourlon, F., additional, Civaia, F., additional, Dreyfus, G., additional, Paetzold, S., additional, Luha, O., additional, Hoedl, R., additional, Stoschitzky, G., additional, Pfeiffer, K., additional, Zweiker, D., additional, Pieske, B., additional, Maier, R., additional, Sevilla, T., additional, Revilla, A., additional, Lopez, J., additional, Vilacosta, I., additional, Arnold, R., additional, Gomez, I., additional, San Roman, J., additional, Nikcevic, G., additional, Djordjevic Dikic, A., additional, Djordjevic, S., additional, Raspopovic, S., additional, Jovanovic, V., additional, Kircanski, B., additional, Pavlovic, S., additional, Milasinovic, G., additional, Ruiz-Zamora, I., additional, Cabrera Bueno, F., additional, Molina, M., additional, Fernandez-Pastor, J., additional, Pena, J., additional, Linde, A., additional, Barrera, A., additional, Alzueta, J., additional, Bremont, C., additional, Bensaid, A., additional, Alonso, H., additional, Zaghden, O., additional, Nahum, J., additional, Dubois-Rande, J., additional, Gueret, P., additional, Lim, P., additional, Lee, S.-P., additional, Park, K., additional, Kim, H.-R., additional, Lee, J.-H., additional, Ahn, H.-S., additional, Kim, J.-H., additional, Kim, H.-K., additional, Kim, Y.-J., additional, Sohn, D.-W., additional, Niemann, M., additional, Herrmann, S., additional, Hu, K., additional, Liu, D., additional, Beer, M., additional, Ertl, G., additional, Wanner, C., additional, Takenaka, T., additional, Tei, C., additional, Weidemann, F., additional, Madeira, H., additional, Mendes Pedro, M., additional, Brito, D., additional, Ippolito, R., additional, De Palma, D., additional, Gati, S., additional, Oxborough, D., additional, Reed, M., additional, Zaidi, A., additional, Ghani, S., additional, Sheikh, N., additional, Papadakis, M., additional, Sharma, S., additional, Chow, V., additional, Ng, A., additional, Pasqualon, T., additional, Zhao, W., additional, Hanzek, D., additional, Chung, T., additional, Yeoh, T., additional, Kritharides, L., additional, Magda, L., additional, Mihalcea, D., additional, Jinga, D., additional, Mincu, R., additional, Ferrazzi, E., additional, Segato, G., additional, Folino, F., additional, Famoso, G., additional, Senzolo, M., additional, Bellu, R., additional, Corbetti, F., additional, Tona, F., additional, Azevedo, O., additional, Quelhas, I., additional, Guardado, J., additional, Fernandes, M., additional, Pereira, V., additional, Medeiros, R., additional, Sousa, P., additional, Santos, W., additional, Pereira, S., additional, Marques, N., additional, Mimoso, J., additional, Marques, V., additional, Jesus, I., additional, Rustad, L., additional, Nytroen, K., additional, Gullestad, L., additional, Amundsen, B., additional, Aakhus, S., additional, Linhartova, K., additional, Sterbakova, G., additional, Necas, J., additional, Kovalova, S., additional, Cerbak, R., additional, Nelassov, N., additional, Korotkijan, N., additional, Shishkina, A., additional, Gagieva, B., additional, Nagaplev, M., additional, Eroshenko, O., additional, Morgunov, M., additional, Parmon, S., additional, Velthuis, S., additional, Van Gent, M., additional, Post, M., additional, Westermann, C., additional, Mager, J., additional, Snijder, R., additional, Koyalakonda, S. P., additional, Anderson, M., additional, Burgess, M., additional, Bergenzaun, L., additional, Chew, M., additional, Ohlin, H., additional, Gjerdalen, G. F., additional, Hisdal, J., additional, Solberg, E., additional, Andersen, T., additional, Radunovic, Z., additional, Steine, K., additional, Rutz, T., additional, Kuehn, A., additional, Petzuch, K., additional, Pekala, M., additional, Elmenhorst, J., additional, Fratz, S., additional, Mueller, J., additional, Hager, A., additional, Hess, J., additional, Vogt, M., additional, Van Der Linde, D., additional, Van De Laar, I., additional, Wessels, M., additional, Bekkers, J., additional, Moelker, A., additional, Tanghe, H., additional, Van Kooten, F., additional, Oldenburg, R., additional, Bertoli-Avella, A., additional, Roos-Hesselink, J., additional, Cresti, A., additional, Fontani, L., additional, Calabria, P., additional, Capati, E., additional, Severi, S., additional, Lynch, M., additional, Saraf, S., additional, Sandler, B., additional, Yoon, S., additional, Kim, S., additional, Ko, C., additional, Ryu, S., additional, Byun, Y., additional, Seo, H., additional, Ciampi, Q., additional, Rigo, F., additional, Pratali, L., additional, Gherardi, S., additional, Villari, B., additional, Picano, E., additional, Sicari, R., additional, Celutkiene, J., additional, Zakarkaite, D., additional, Skorniakov, V., additional, Zvironaite, V., additional, Grabauskiene, V., additional, Sinicyna, J., additional, Gruodyte, G., additional, Janonyte, K., additional, Laucevicius, A., additional, O'driscoll, J., additional, Schmid, K., additional, Marciniak, A., additional, Saha, A., additional, Gupta, S., additional, Smith, R., additional, Sharma, R., additional, Alvarez Garcia, N., additional, Prada, O., additional, Rodriguez Vilela, A., additional, Barge Caballero, G., additional, Lopez Perez, M., additional, Lopez Sainz, A., additional, Castro Beiras, A., additional, Kochanowski, J., additional, Scislo, P., additional, Piatkowski, R., additional, Grabowski, M., additional, Marchel, M., additional, Roik, M., additional, Kosior, D., additional, Opolski, G., additional, Van De Heyning, C. M., additional, Mahjoub, H., additional, Clausen, H., additional, Basaggianis, C., additional, Newton, J., additional, Del Pasqua, A., additional, Carotti, A., additional, Di Carlo, D., additional, Cetrano, E., additional, Toscano, A., additional, Iacobelli, R., additional, Esposito, C., additional, Chinali, M., additional, Pongiglione, G., additional, Rinelli, G., additional, Larsson, M., additional, Bjallmark, A., additional, Caidahl, K., additional, Brodin, L., additional, Gao, H., additional, Lugiez, M., additional, Guivier, C., additional, Rieu, R., additional, D'hooge, J., additional, Hang, G., additional, Guerin, C., additional, Menard, M., additional, Voigt, J.-U., additional, Dungu, J., additional, Campos, G., additional, Jaffarulla, R., additional, Gomes-Pereira, S., additional, Sutaria, N., additional, Baker, C., additional, Nihoyannopoulos, P., additional, Bellamy, M., additional, Harries, D., additional, Walker, N., additional, Pearson, P., additional, Reiken, J., additional, Batteson, J., additional, Kamdar, R., additional, Murgatroyd, F., additional, D'andrea, A., additional, Riegler, L., additional, Scarafile, R., additional, Pezzullo, E., additional, Salerno, G., additional, Bossone, E., additional, Limongelli, G., additional, Russo, M., additional, Pacileo, G., additional, Calabro', R., additional, Kang, Y., additional, Cui, J., additional, Chen, H., additional, Pan, C., additional, Shu, X., additional, Kiotsekoglou, A., additional, Saha, S., additional, Toole, R., additional, Govind, S., additional, Gopal, A., additional, Crispi, F., additional, Bijnens, B., additional, Sepulveda-Swatson, E., additional, Rojas-Benavente, J., additional, Dominguez, J., additional, Illa, M., additional, Eixarch, E., additional, Sitges, M., additional, Gratacos, E., additional, Prinz, C., additional, Faludi, R., additional, Walker, A., additional, Amzulescu, M., additional, Uejima, T., additional, Fraser, A., additional, Voigt, J., additional, Esmaeilzadeh, M., additional, Maleki, M., additional, Amin, A., additional, Vakilian, F., additional, Noohi, F., additional, Ojaghi Haghighi, Z., additional, Nakhostin Davari, P., additional, Bakhshandeh Abkenar, H., additional, Rimbas, R., additional, Dulgheru, R., additional, Margulescu, A., additional, D' Asaro, M., additional, Mizzon, C., additional, Parisi, F., additional, Jung, B.-C., additional, Lee, B.-Y., additional, Kang, H.-J., additional, Kim, M., additional, Kim, Y., additional, Cho, D., additional, Park, S., additional, Hong, S., additional, Lim, D., additional, Shim, W., additional, Bellsham-Revell, H., additional, Tibby, S., additional, Bell, A. J., additional, Miller, O. I., additional, Greil, G., additional, Simpson, J. M., additional, Providencia, R. A., additional, Trigo, J., additional, Botelho, A., additional, Gomes, P., additional, Seca, L., additional, Barra, S., additional, Faustino, A., additional, Costa, G., additional, Quintal, N., additional, Leitao-Marques, A., additional, Nestaas, E., additional, Stoylen, A., additional, Fugelseth, D., additional, Mornos, C., additional, Ionac, A., additional, Petrescu, L., additional, Cozma, D., additional, Dragulescu, D., additional, Mornos, A., additional, Pescariu, S., additional, Fontana, A., additional, Abbate, M., additional, Cazzaniga, M., additional, Giannattasio, C., additional, Trocino, G., additional, Laser, K., additional, Faber, L., additional, Fischer, M., additional, Koerperich, H., additional, Kececioglu, D., additional, Elnoamany, M. F., additional, Dawood, A., additional, Elhabashy, M., additional, Khalil, Y., additional, Piriou, N., additional, Warin-Fresse, K., additional, Caza, M., additional, Fau, G., additional, Crochet, D., additional, Xhabija, N., additional, Allajbeu, I., additional, Petrela, E., additional, Heba, M., additional, Barreiro Perez, M., additional, Martin Fernandez, M., additional, Renilla Gonzalez, A., additional, Florez Munoz, J., additional, Fernandez Cimadevilla, O., additional, Alvarez Pichel, I., additional, Velasco Alonso, E., additional, Leon Duran, D., additional, Benito Martin, E., additional, Secades Gonzalez, S., additional, Gargani, L., additional, Pang, P., additional, Davis, E., additional, Schumacher, A., additional, Silva Ferreira, A., additional, Bettencourt, N., additional, Matos, P., additional, Oliveira, L., additional, Cosin-Sales, J., additional, Lopez Lereu, M., additional, Monmeneu, J., additional, Estornell, J., additional, Tsverava, M., additional, Tsverava, D., additional, Varela, A., additional, Salagianni, M., additional, Galani, I., additional, Andreakos, E., additional, Davos, C., additional, Ikonomidis, I., additional, Lekakis, J., additional, Tritakis, V., additional, Kadoglou, N., additional, Papadakis, J., additional, Trivilou, P., additional, Tzortzis, S., additional, Koukoulis, C., additional, Paraskevaidis, I., additional, Anastasiou-Nana, M., additional, Kim, G., additional, Youn, H., additional, Ibrahimi, P., additional, Bajraktari, G., additional, Jashari, F., additional, Ahmeti, A., additional, Poniku, A., additional, Haliti, E., additional, Henein, M., additional, Pezo Nikolic, B., additional, Jurin, H., additional, Lovric, D., additional, Baricevic, Z., additional, Ivanac Vranesic, I., additional, Lovric Bencic, M., additional, Ernst, A., additional, and Separovic Hanzevacki, J., additional

Published
2011
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9. A contribution to information on the ground water of the Danube near Vienna

Author

Negrea, S. and Pospisil, P.

Abstract

Fond?s sur le mat?riel recueilli pendant deux campagnes de recherches (1971-1980 et 1991-1993) dans les eaux souterraines du Danube ? Vienne (zone Lobau), les auteurs font un bilan des Cladoc?res r?colt?s dans ce milieu. Parmi les 16 esp?ces inventori?es, 5 sont stygophiles : Alonella nana, Chydorus sphaericus, Alona guttata, Acroperus harpae et Biapertura affinis. Toutes les donn?es montrent que les esp?ces benthiques des eaux souterraines du Lobau sont en liaison ?troite avec celles de la surface (bras mort Ebersch?ttwasser), formant des populations communes ?nappe alluviale-benthos? dont la dynamique est fortement influenc?e par le r?gime hydrologique.Cladocera were recorded from samples collected over two periods (1971-1980 and 1991-1993) from the ground water of the Danube near Vienna (Lobau zone). Of the 16 species recorded, 5 are stygophiles : Alonella nana, Chydorus sphaericus, Alona guttata, Acroperus harpae and Biapertura affinis. All the data show that the benthic species of the ground water at Lobau are closely connected with species at the surface (the stagnant arm Ebertsch?ttwasser) and form the community of the ?alluvial-benthic stratum?, the dynamics of which are strongly influenced by the hydrological conditions.

Published
1995

15. Design of Nanostructured Hybrid Electrodes Based on a Liquid Crystalline Zn(II) Coordination Complex-Carbon Nanotubes Composition for the Specific Electrochemical Sensing of Uric Acid.

Author

Negrea S, Andelescu AA, Ilies B Motoc S, Cretu C, Cseh L, Rastei M, Donnio B, Szerb EI, and Manea F

Abstract

A metallomesogen based on an Zn(II) coordination complex was employed as precursor to obtain a complex matrix nanoplatform for the fabrication of a high-performance electrochemical hybrid sensor. Three representative paste electrodes, which differ by the weight ratio between Zn(II) metallomesogen and carbon nanotubes (CNT), i.e., PE_01, PE_02 and PE_03, were obtained by mixing the materials in different amounts. The composition with the largest amount of CNT with respect to Zn complex, i.e., PE_03, gives the best electrochemical signal for uric acid detection by cyclic voltammetry in an alkaline medium. The amphiphilic structure of the Zn(II) coordination complex likely induces a regular separation between the metal centers favoring the redox system through their reduction, followed by stripping, and is characterized by enhanced electrocatalytic activity towards uric acid oxidation. The comparative detection of uric acid between the PE_03 paste electrode and the commercial zinc electrode demonstrated the superiority of the former, and its great potential for the development of advanced electrochemical detection of uric acid. Advanced electrochemical techniques, such as differential-pulsed voltammetry (DPV) and square-wave voltammetry (SWV), allowed for the highly sensitive detection of uric acid in aqueous alkaline solutions. In addition, a good and fast amperometric signal for uric acid detection was achieved by multiple-pulsed amperometry, which was validated by urine analysis.

Published
2022
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16. Graphene Quantum Dots and Cu(I) Liquid Crystal for Advanced Electrochemical Detection of Doxorubicine in Aqueous Solutions.

Author

Motoc Ilies S, Schinteie B, Pop A, Negrea S, Cretu C, Szerb EI, and Manea F

Abstract

Two paste electrodes based on graphene quantum dots and carbon nanotubes (GRQD/CNT) and one modified with a homoleptic liquid crystalline Cu(I) based coordination complex (Cu/GRQD/CNT) were obtained and morphostructurally and electrochemically characterized in comparison with simple CNT electrode (CNT) for doxorubicine (DOX) detection in aqueous solutions. GRQD/CNT showed the best electroanalytical performance by differential pulse voltammetry technique (DPV). Moreover, applying a preconcentration step prior to detection stage, the lowest limit of detection (1 ng/L) and the highest sensitivity (216,105 µA/mg·L -1 ) in comparison with reported literature data were obtained. Cu/GRQD/CNT showed good results using multiple pulse amperometry technique (MPA) and a favorable shifting of the potential detection to mitigate potential interferences. Both GRQD-based paste electrodes have a great potential for practical utility in DOX determination in water at trace concentration levels, using GRQD/CNT with DPV and in pharmaceuticals formulations using Cu/GRQD/CNT with MPA.

Published
2021
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17. Graphene Oxide Electroreduced onto Boron-Doped Diamond and Electrodecorated with Silver (Ag/GO/BDD) Electrode for Tetracycline Detection in Aqueous Solution.

Author

Negrea S, Diaconu LA, Nicorescu V, Motoc M Ilies S, Orha C, and Manea F

Abstract

A new electrochemical sensor designed by modifying the commercial boron-doped diamond (BDD) electrode with graphene oxide (GO) reduced electrochemically and further electrodecorated with silver (Ag), named the Ag/GO/BDD electrode, was selected among a series of the BDD, GOelectroreduced onto BDD (GO/BDD) and silver electrodeposited onto BDD (Ag/BDD) electrodes for the detection of tetracycline (TC) in aqueous solution. The best results regarding the sensitivity of 46.6 µA·µM -1 ·cm -2 and the lowest limit of detection of 5 nM was achieved using square-wave voltammetry (SWV) operated at the step potential of 5 mV, modulation amplitude of 200 mV and the frequency of 10 Hz in alkaline medium. The application of the alkaline supporting electrolyte-based procedure is limited for water monitoring due to the presence of chloride that interferes with TC detection; however, it can be applied for quantitative determination of pharmaceutical formulations. 0.1 M Na 2 SO 4 supporting electrolyte eliminated chloride interference and can be used for the application of Ag/GO/BDD in practical detection of TC in water.

Published
2021
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18. CuBi 2 O 4 Synthesis, Characterization, and Application in Sensitive Amperometric/Voltammetric Detection of Amoxicillin in Aqueous Solutions.

Author

Dumitru M Vodă R, Negrea S, Păcurariu C, Surdu A, Ianculescu A, Pop A, and Manea F

Abstract

CuBi 2 O 4 synthesized by thermolysis of a new Bi(III)-Cu(II) oxalate coordination compound, namely Bi 2 Cu(C 2 O 4 ) 4 ·0.25H 2 O, was tested through its integration within carbon nanofiber paste electrode, namely CuBi/carbon nanofiber (CNF), for the electrochemical detection of amoxicillin (AMX) in the aqueous solution. Thermal analysis and IR spectroscopy were used to characterize a CuBi 2 O 4 precursor to optimize the synthesis conditions. The copper bismuth oxide obtained after a heating treatment of the precursor at 700 °C/1 h was investigated by an X-ray diffraction and scanning electron microscopy. The electrochemical behavior of CuBi/CNF in comparison with CNF paste electrode showed the electrocatalytic activity of CuBi 2 O 4 toward amoxicillin detection. Two potential detections, with one at the potential value of +0.540 V/saturated calomel electrode (SCE) and the other at the potential value of -1.000 V/SCE, were identified by cyclic voltammetry, which were exploited to develop the enhanced voltammetric and/or amperometric detection protocols. Better electroanalytical performance for AMX detection was achieved for CuBi/CNF using differential-pulsed and square-wave voltammetries than others reported in the literature. Very nice results obtained through anodic and cathodic currents recorded at +0.750 V/SCE and -1.000 V/SCE in the same time period using a pseudo multiple-pulsed amperometry technique showed the great potential of the CuBi/CNF paste electrode for practical applications in amoxicillin detection in aqueous solutions.

Published
2021
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19. Lanthanum Ferrite Ceramic Powders: Synthesis, Characterization and Electrochemical Detection Application.

Author

Dumitru R, Negrea S, Ianculescu A, Păcurariu C, Vasile B, Surdu A, and Manea F

Abstract

The perovskite-type lanthanum ferrite, LaFeO 3 , has been prepared by thermal decomposition of in situ obtained lanthanum ferrioxalate compound precursor, LaFe(C 2 O 4 ) 3 ·3H 2 O. The oxalate precursor was synthesized through the redox reaction between 1,2-ethanediol and nitrate ion and characterized by chemical analysis, infrared spectroscopy, and thermal analysis. LaFeO 3 obtained after the calcination of the precursor for at least 550-800 °C/1 h have been investigated by X-ray diffraction (XRD), field emission scanning electron microscopy (FE-SEM), transmission electron microscopy (TEM), and high-resolution transmission electron microscopy (HRTEM). A boron-doped diamond electrode (BDD) modified with LaFeO 3 ceramic powders at 550 °C (LaFeO 3 /BDD) by simple immersion was characterized by cyclic voltammetry and tested for the voltammetric and amperometric detection of capecitabine (CCB), which is a cytostatic drug considered as an emerging pollutant in water. The modified electrode exhibited a complex electrochemical behaviour by several redox systems in direct relation to the electrode potential range. The results obtained by cyclic voltammetry (CV), differential-pulsed voltammetry (DPV), and multiple-pulsed amperometry proved the electrocatalytic effect to capecitabine oxidation and reduction and allowed its electrochemical detection in alkaline aqueous solution.

Published
2020
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20. mTORC2 critically regulates renal potassium handling.

Author

Grahammer F, Nesterov V, Ahmed A, Steinhardt F, Sandner L, Arnold F, Cordts T, Negrea S, Bertog M, Ruegg MA, Hall MN, Walz G, Korbmacher C, Artunc F, and Huber TB

Subjects
Animals, Hyperkalemia genetics, Hyperkalemia metabolism, Mechanistic Target of Rapamycin Complex 2, Mice, Mice, Transgenic, Multiprotein Complexes genetics, Potassium Channels, Inwardly Rectifying genetics, Potassium Channels, Inwardly Rectifying metabolism, TOR Serine-Threonine Kinases genetics, Kidney Tubules metabolism, Multiprotein Complexes metabolism, Potassium metabolism, TOR Serine-Threonine Kinases metabolism, Water-Electrolyte Balance physiology
Abstract

The mTOR pathway orchestrates cellular homeostasis. The rapamycin-sensitive mTOR complex (mTORC1) in the kidney has been widely studied; however, mTORC2 function in renal tubules is poorly characterized. Here, we generated mice lacking mTORC2 in the distal tubule (Rictorfl/fl Ksp-Cre mice), which were viable and had no obvious phenotype, except for a 2.5-fold increase in plasma aldosterone. Challenged with a low-Na+ diet, these mice adequately reduced Na+ excretion; however, Rictorfl/fl Ksp-Cre mice rapidly developed hyperkalemia on a high-K+ diet, despite a 10-fold increase in serum aldosterone levels, implying that mTORC2 regulates kaliuresis. Phosphorylation of serum- and glucocorticoid-inducible kinase 1 (SGK1) and PKC-α was absent in Rictorfl/fl Ksp-Cre mice, indicating a functional block in K+ secretion activation via ROMK channels. Indeed, patch-clamp experiments on split-open tubular segments from the transition zone of the late connecting tubule and early cortical collecting duct demonstrated that Ba2+-sensitive apical K+ currents were barely detectable in the majority of Rictorfl/fl Ksp-Cre mice. Conversely, epithelial sodium channel (ENaC) activity was largely preserved, suggesting that the reduced ability to maintain K+ homeostasis is the result of impaired apical K+ conductance and not a reduced electrical driving force for K+ secretion. Thus, these data unravel a vital and nonredundant role of mTORC2 for distal tubular K+ handling.

Published
2016
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21. Primary non-alcoholic fatty liver disease in hypertensive patients.

Author

Latea L, Negrea S, and Bolboaca S

Abstract

Background: Non-alcoholic fatty liver disease (NAFLD) is considered the most common liver disease affecting 15-25% of the general population., Aims: The aim of this study was to investigate the prevalence of NAFLD and the relationship between insulin sensitivity and NAFLD in grade III high and very high cardiovascular additional risk essential hypertensive patients according to the circadian blood pressure (BP) rhythm., Method: This four-year prospective study was conducted at the Department of Internal Medicine at Cluj-Napoca's Diagnosis and Treatment Centre in Romania. The study included grade III essential hypertensive patients. Hypertensive patients were divided into four groups according to the diurnal index (DI) from ABPM monitoring: dipper (D), non-dipper (ND), reverse-dipper (RD), and extreme-dipper (ED). All hypertensive patients underwent 24 ABPM, blood tests and abdominal ultrasonography for the diagnosis of fatty liver disease., Results: Thirty-five hypertensive patients were included in the study, with 31.42% ND, 11.43% RD, 8.57% ED and 48.57% D. The prevalence of NAFLD was significantly higher in ND, RD and ED when compared to D. When compared to the dipper group of hypertensive patients a statistically significantly higher level of plasma insulin was observed: in non-dipper [86.3±17.9pmol/l vs. 62.2±203pmol/l, p<0.05], in reverse dipper [88.3±18.6pmol/l vs. 62.2±20.3pmol/l] and in extreme-dippers [86.7±16.88pmol/l vs. 62.2±20.3 pmol/l, p<0.05]., Conclusion: The altered dipping status (ND, RD, ED) of hypertension associated with a higher insulin resistance could be the pathogenetic link between the NAFLD and altered blood pressure status. Altered BP status could be a marker of NAFLD in hypertensive patients.

Published
2013
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22. [Complex injuries of the face].

Author

Negrea S, Stefaniu A, Negrea A, Tigănuş I, and Florian O

Subjects
Adult, Face, Humans, Male, Maxillary Sinus, Middle Aged, Radiography, Blast Injuries surgery, Facial Injuries surgery, Foreign Bodies diagnostic imaging, Foreign Bodies surgery, Wounds, Stab surgery
Published
1976

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