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Takati N, Azeddoug H, Benchekroun MN, Blaghen M, Ennaji MM. Biochemical responses in mice induced by saxitoxins extracted from the cockles Acanthocardia tuberculatum. Cell Mol Biol (Noisy-le-grand) 2023; 69:95-100. [PMID: 37605584 DOI: 10.14715/cmb/2023.69.6.15] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2023] [Indexed: 08/23/2023]
Abstract
Harmful algae blooms have increased in frequency and geographic range in recent decades, and they produce toxins strains such as saxitoxins (STXs). they block voltage-gated sodium channels and can lead to several poisonings and the death of organisms that pose a significant risk to public and environmental health. The study of STXs toxicity has been carried out but little is known about the response of antioxidant enzymes activities to STXs in mice. The purpose of this study was to evaluate biochemical responses and oxidative stress induced by STXs extracted from Acanthocardia tuberculatum. To this end, daily, mice were treated orally for 7 days with sublethal concentrations (10 mg/100 g mouse). The animal's liver was assessed using biomarkers such as activities of catalase (CAT), thiobarbituric acid reactive substances (TBARS), glyceraldehyde-3-phosphate dehydrogenase (GAPDH) and succinate dehydrogenase (SDH). In the blood, plasmatic markers were analysed as glutamic oxalic transaminase (GOT), glutamic pyruvic transaminase (GPT), creatinine phosphokinase (CPK), lactate dehydrogenase (LDH), urea and creatinine. Globally, test toxicity test showed a significant decrease in the weight at 10 mg /100 g mouse, and the results showed an increase of GPT, GOT, CPK, LDH, CAT and TBARS activities and the inhibitory effect of GAPDH activities but creatinine, urea and SDH activities showed no significative difference from the control. We concluded that STXs induce oxidative stress breaking in mice the balance of the defence system and causing oxidations reactions. Moreover, STXs affect energy metabolism in mice, however, renal function in mice is not affected by exposure to STXs.
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Affiliation(s)
- Nadia Takati
- Laboratory of BioGeosciences and Materials Engineering, Ecole Normale Supérieure, University Hassan II of Casablanca, Ghandi, 50069, Casablanca, Morocco.
| | - Houssine Azeddoug
- Laboratory of BioGeosciences and Materials Engineering, Ecole Normale Supérieure, University Hassan II of Casablanca, Ghandi, 50069, Casablanca, Morocco.
| | - Mohammed Nabil Benchekroun
- Team Research of Virology, Oncology, and Biotechnologies, Laboratory of Virology, Oncology, Biosciences, Environment and New Energies, Faculty of Sciences and Techniques Mohammedia, University Hassan II of Casablanca, Casablanca, Morocco.
| | - Mohamed Blaghen
- Laboratory of Immunology and Biodiversity, Faculty of Sciences Ain cock, Hassan II University of Casablanca, 5366, Casablanca, Morocco.
| | - Moulay Mustapha Ennaji
- Team Research of Virology, Oncology, and Biotechnologies, Laboratory of Virology, Oncology, Biosciences, Environment and New Energies, Faculty of Sciences and Techniques Mohammedia, University Hassan II of Casablanca, Casablanca, Morocco.
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Benghait Y, Blaghen M. Heavy metals and antibiotics resistance of bacteria isolated from Marchica lagoon: biodegradation of anthracene on submerged aerated fixed bed reactor. Environ Technol 2022; 43:1493-1502. [PMID: 33070702 DOI: 10.1080/09593330.2020.1839133] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/29/2020] [Accepted: 10/12/2020] [Indexed: 06/11/2023]
Abstract
Heavy metals resistant and polyaromatic hydrocarbon (PAH)-degrading bacteria isolated from Marchica lagoon. Six isolates, Pseudomonas putida, Orchobactrum antropi, Staphylococus epidermidis, Brevundimonas diminuta, Serratia ficaria and Bacillus anthracis were characterized on the basis of biochemical and 16S rDNA. The strains that showed high resistance to heavy metals were also studied for their antibiotics resistance and growth kinetics. The minimal inhibitory concentrations (MIC) of metals at variant concentrations (10-38 mM) were determined in liquid and solid medium. Strains were showed an extreme resistance against metals with the MIC values of Cu (9 mM), Cd (6.25 mM), Cr (2.5 mM), Ag (0,625), and Hg (0,156). Furthermore, growth rates were decreased in the presence of metals (compared to the control). The anthracene elimination from synthetic wastewater was determined in a submerged aerobic fixed-film reactor. Optimal conditions for bacterium growth and biodegradation of anthracene are determined as: temperature of 37 °C, pH 7, and initial anthracene concentration of 20 mg/l. It emerged that at anthracene concentrations 5-40 mg/l, COD removal efficiency were 84.62%; 90.62%; 91.36% and 71.4% respectively.
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Affiliation(s)
- Yousra Benghait
- Laboratory of Microbiology, Pharmacology, Biotechnology, and Environment, Faculty of Sciences Aïn-Chock, University Hassan II of Casablanca, Casablanca, Morocco
| | - Mohamed Blaghen
- Laboratory of Microbiology, Pharmacology, Biotechnology, and Environment, Faculty of Sciences Aïn-Chock, University Hassan II of Casablanca, Casablanca, Morocco
- Laboratory of Plant Biotechnology, Ecology and Ecosystem Valorization, Faculty of Sciences, University Chouaïb Doukkali, El Jadida, Morocco
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Abdou A, Idouaarame S, Salah M, Nor N, Zahm, S, Maksoudi AE, Mazoir N, benharref A, Dari A, Eddine JJ, Blaghen M, Dakir M. Phytochemical study: molecular docking of eugenol derivatives as antioxidant and antimicrobial agents. LETT ORG CHEM 2022. [DOI: 10.2174/1570178619666220111112125] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Abstract:
Eugenol (4-allyl-2-methoxyphenol) is a natural phenolic compound present in certain aromatic plants; however, it is generally extracted from essential oil of Eugenia caryophyllata (Syzygiumaromaticum) (L.) Merr. and L.M. Perry. This bioactive natural compound has generated considerable biological interest with well-known antimicrobial and antioxidant actions. The authors have aimed to the evaluations of eugenol derivatives and their as antimicrobial and antioxidant agent with the aid of molecular dynamic simulation. The starting material was extracted from cloves using hydrodistillation. Two eugenol derivatives, acetyleugenol (4-allyl-2-methoxyphenylacetate) and epoxyeugenol (4-allyl-2-methoxyphenol) were prepared and tested against two strains Escherichia coli (E. Coli) and Staphylococcus aureus (S. Aureus). The results have revealed that the three compounds (Eugenol, acetyleugenol and epoxyeugenol) possess important potentials of inhibition against E. coli and S. Aureus. The antioxidant activity of eugenol derivatives was evaluated by the reaction with DPPH (1,1-diphenyl-2-picrylhydrazyl), showed that the epoxyeugenol was the most active compound. The molecular docking scores of three compounds and the amino acids in the active site pockets of the selected proteins of the two bacteria have approved and explain the biological experimental outcomes.
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Affiliation(s)
- Achraf Abdou
- Laboratory of Organic Synthesis, Extraction and Valorization, Faculty of Sciences Ain Chock, Hassan II University, P.O. Box 20, 20000, Casablanca, Morocco
| | - Sabrine Idouaarame
- Laboratory of pharmacology, microbiology, Biotechnology and environment, Faculty of Sciences Ain Chock, Hassan II University, P.O. Box 20, 20000, Casablanca, Morocco
| | - Mohammed Salah
- Molecular Modeling and Spectroscopy Research Team, Department of Chemistry, Faculty of Sciences, Chouaïb Doukkali University, P.O. Box 20, 24000 El Jadida, Morocco
| | - Nabil Nor
- Molecular Modeling and Spectroscopy Research Team, Department of Chemistry, Faculty of Sciences, Chouaïb Doukkali University, P.O. Box 20, 24000 El Jadida, Morocco
| | - Soukaina Zahm,
- Laboratory of Organic Synthesis, Extraction and Valorization, Faculty of Sciences Ain Chock, Hassan II University, P.O. Box 20, 20000, Casablanca, Morocco
| | - Abdelhakim El Maksoudi
- Laboratory of Organic Synthesis, Extraction and Valorization, Faculty of Sciences Ain Chock, Hassan II University, P.O. Box 20, 20000, Casablanca, Morocco
| | - Noureddine Mazoir
- Laboratory of Plant Biotechnology and Ecosystem Valorization, Faculty of Sciences Chouaib Doukkali University, Research Unit: Natural Resource Valorizations P.O. Box 20, 24000 El Jadida, Morocco
| | - Ahmed benharref
- Laboratory of Biomolecular Chemistry, Natural Substances and Reactivity, URAC 16, Faculty of Sciences Semlalia, Cadi Ayyad University, P.O. Box 2390, 40000 Marrakech, Morocco
| | - Abdelmjid Dari
- Laboratory of Organic Synthesis, Extraction and Valorization, Faculty of Sciences Ain Chock, Hassan II University, P.O. Box 20, 20000, Casablanca, Morocco
| | - Jamal Jamal Eddine
- Laboratory of Organic Synthesis, Extraction and Valorization, Faculty of Sciences Ain Chock, Hassan II University, P.O. Box 20, 20000, Casablanca, Morocco
| | - Mohamed Blaghen
- Laboratory of pharmacology, microbiology, Biotechnology and environment, Faculty of Sciences Ain Chock, Hassan II University, P.O. Box 20, 20000, Casablanca, Morocco
| | - Mohamed Dakir
- Laboratory of Organic Synthesis, Extraction and Valorization, Faculty of Sciences Ain Chock, Hassan II University, P.O. Box 20, 20000, Casablanca, Morocco
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Achir M, Dakir M, El Makssoudi A, Belbachir A, Adly F, Blaghen M, El Amrani A, JamalEddine J, Bettach N. Isolation, characterization, and antimicrobial activity of communic acid from Juniperus phoenicea. J Complement Integr Med 2021; 19:467-470. [PMID: 34332514 DOI: 10.1515/jcim-2019-0319] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/18/2019] [Accepted: 07/13/2021] [Indexed: 11/15/2022]
Abstract
OBJECTIVES A mixture of Z and E communic acid is isolated for the first time from the cones of Juniperus phoenicea. Its biological activity was studied. METHODS The plant material was extracted in a Soxhlet apparatus with n-hexane, the resulting extract was subjected to column chromatography (CC) on silica gel. The structure elucidation of the constituents of the isolated fraction was identified by comparison of its spectroscopic properties 1H and 13C NMR data with those reported in the literature. The antimicrobial assay of hexanic extract and isolated compounds was carried out by the disc diffusion and micro-dilution methods. RESULTS A mixture of two diterpene acids isomers was isolated, with a high yield (68%). Their chemical structures were confirmed after comparing their spectral data with published reports. These natural products exhibited a significant antibacterial and antifungal activity against the tested strains. Indeed, for Bacillus cereus, Staphylococcus aureus, and Pseudomonas aeruginosa, the inhibition zone diameters (36-37 mm) was better than penicillin, novobiocin, and amoxicillin. For Candida albicans activity, it show that the mixture possess an activity similar to that of Metrazol. Against Escherichia coli, the inhibitory activity was found less than Amoxicillin. This is the first report of isolation of communic acid from J. phoenicea. CONCLUSIONS These results showed that the cones of J. phoenicea were an important source of communic acid, and its hexanic extract had the greatest potential antibacterial activity against both Gram-negative and Gram-positive bacteria and C. albicans.
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Affiliation(s)
- Mariam Achir
- Laboratory of Organic Synthesis, Extraction and Valorisation, Faculty of Sciences Aïn Chock, Hassan II University of Casablanca, BP. 20000, Casablanca, Morocco
| | - Mohamed Dakir
- Laboratory of Organic Synthesis, Extraction and Valorisation, Faculty of Sciences Aïn Chock, Hassan II University of Casablanca, BP. 20000, Casablanca, Morocco
| | - Abdelhakim El Makssoudi
- Laboratory of Organic Synthesis, Extraction and Valorisation, Faculty of Sciences Aïn Chock, Hassan II University of Casablanca, BP. 20000, Casablanca, Morocco
| | - Asmae Belbachir
- Laboratory of Organic Synthesis, Extraction and Valorisation, Faculty of Sciences Aïn Chock, Hassan II University of Casablanca, BP. 20000, Casablanca, Morocco
| | - Farida Adly
- Laboratoire de Santé et Environnement, Faculty of Sciences Aïn Chock, Hassan II University of Casablanca, Casablanca, Morocco
| | - Mohamed Blaghen
- Laboratoire de microbiologie et de pharmacologie et environnement, Faculty of Sciences Aïn Chock, Hassan II University of Casablanca, Casablanca, Morocco
| | - Abdelaziz El Amrani
- Laboratory of Organic Synthesis, Extraction and Valorisation, Faculty of Sciences Aïn Chock, Hassan II University of Casablanca, BP. 20000, Casablanca, Morocco
| | - Jamal JamalEddine
- Laboratory of Organic Synthesis, Extraction and Valorisation, Faculty of Sciences Aïn Chock, Hassan II University of Casablanca, BP. 20000, Casablanca, Morocco
| | - Naima Bettach
- Laboratory of Organic Synthesis, Extraction and Valorisation, Faculty of Sciences Aïn Chock, Hassan II University of Casablanca, BP. 20000, Casablanca, Morocco
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Nouadi B, Ezaouine A, El Messal M, Blaghen M, Bennis F, Chegdani F. Prediction of Anti-COVID 19 Therapeutic Power of Medicinal Moroccan Plants Using Molecular Docking. Bioinform Biol Insights 2021; 15:11779322211009199. [PMID: 33888980 PMCID: PMC8040561 DOI: 10.1177/11779322211009199] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/12/2020] [Accepted: 03/21/2021] [Indexed: 01/30/2023] Open
Abstract
The emerging pathogen SARS-CoV2 causing coronavirus disease 2019 (COVID-19) is a global public health challenge. To the present day, COVID-19 had affected more than 40 million people worldwide. The exploration and the development of new bioactive compounds with cost-effective and specific anti-COVID 19 therapeutic power is the prime focus of the current medical research. Thus, the exploitation of the molecular docking technique has become essential in the discovery and development of new drugs, to better understand drug-target interactions in their original environment. This work consists of studying the binding affinity and the type of interactions, through molecular docking, between 54 compounds from Moroccan medicinal plants, dextran sulfate and heparin (compounds not derived from medicinal plants), and 3CLpro-SARS-CoV-2, ACE2, and the post fusion core of 2019-nCoV S2 subunit. The PDB files of the target proteins and prepared herbal compounds (ligands) were subjected for docking to AutoDock Vina using UCSF Chimera, which provides a list of potential complexes based on the criteria of form complementarity of the natural compound with their binding affinities. The results of molecular docking revealed that Taxol, Rutin, Genkwanine, and Luteolin-glucoside have a high affinity with ACE2 and 3CLpro. Therefore, these natural compounds can have 2 effects at once, inhibiting 3CLpro and preventing recognition between the virus and ACE2. These compounds may have a potential therapeutic effect against SARS-CoV2, and therefore natural anti-COVID-19 compounds.
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Affiliation(s)
- Badreddine Nouadi
- Laboratory of Health and Environment, Faculty of Sciences Aïn Chock, Hassan II University of Casablanca, Casablanca, Morocco
| | - Abdelkarim Ezaouine
- Laboratory of Health and Environment, Faculty of Sciences Aïn Chock, Hassan II University of Casablanca, Casablanca, Morocco
| | - Mariame El Messal
- Laboratory of Health and Environment, Faculty of Sciences Aïn Chock, Hassan II University of Casablanca, Casablanca, Morocco
| | - Mohamed Blaghen
- Laboratory of Plant Biotechnology, Ecology and Ecosystem Valorization, Faculty of Sciences El Jadida, Chouaïb Doukkali University, El Jadida, Morocco
| | - Faiza Bennis
- Laboratory of Health and Environment, Faculty of Sciences Aïn Chock, Hassan II University of Casablanca, Casablanca, Morocco
| | - Fatima Chegdani
- Laboratory of Health and Environment, Faculty of Sciences Aïn Chock, Hassan II University of Casablanca, Casablanca, Morocco
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Momen G, Aainouss A, Lamaammal A, Chettioui F, Blaghen M, Messoudi M, Belghmi K, Mouslim J, El Mzibri M, El Messaoudi MD, Khyatti M, Chaoui I. Molecular characterization of mutations associated with resistance to second line drugs in Mycobacterium tuberculosis patients from Casablanca, Morocco. Rev Inst Med Trop Sao Paulo 2021; 63:e19. [PMID: 33787739 PMCID: PMC7997671 DOI: 10.1590/s1678-9946202163019] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/03/2020] [Accepted: 01/22/2021] [Indexed: 12/02/2022] Open
Abstract
The emergence and spread of extensively drug-resistant tuberculosis (XDR-TB) is a
serious threat to global health. Therefore, its rapid diagnosis is crucial. The
present study aimed to characterize mutations conferring resistance to second
line drugs (SLDs) within multidrug Mycobacterium tuberculosis
(MDR-MTB) isolates and to estimate the occurrence of XDR-TB in Casablanca,
Morocco. A panel of 200 MDR-TB isolates was collected at the Pasteur Institute
between 2015-2018. Samples were subjected to drug susceptibility testing to
Ofloxacin (OFX), Kanamycin (KAN) and Amikacin (AMK). The mutational status of
gyrA, gyrB, rrs,
tlyA and eis was assessed by sequencing
these target genes. Drug susceptibility testing for SLDs showed that among the
200 MDR strains, 20% were resistant to OFX, 2.5% to KAN and 1.5% to AMK.
Overall, 14.5% of MDR strains harbored mutations in gyrA,
gyrB, rrs and tlyA genes.
From the 40 OFXR isolates, 67.5% had mutations in QRDR of
gyrA and gyrB genes, the most frequent one
being Ala90Val in gyrA gene. Of note, none of the isolates
harbored simultaneously mutations in gyrA and
gyrB genes. In eight out of the 200 MDR-TB isolates
resistant either to KAN or AMK, only 25% had A1401G or Lys89Glu change in
rrs and tlyA genes respectively. This
study is very informative and provides data on the alarming rate of
fluoroquinolone resistance which warrants the need to implement appropriate drug
regimens to prevent the emergence and spread of more severe forms of
Mycobacterium tuberculosis drug resistance.
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Affiliation(s)
- Ghizlane Momen
- Institut Pasteur du Maroc, Laboratoire des Mycobactéries, Casablanca, Morocco.,Faculté des Sciences, Laboratoire de Microbiologie, Pharmacologie, Biotechnologie et Environnement, Casablanca, Morocco
| | - Achraf Aainouss
- Institut Pasteur du Maroc, Laboratoire des Mycobactéries, Casablanca, Morocco.,Faculté des Sciences Ben M'Sik, Laboratoire d'Ecologie et Environment, Casablanca, Morocco
| | | | - Fouad Chettioui
- Institut Pasteur du Maroc, Laboratoire des Mycobactéries, Casablanca, Morocco
| | - Mohamed Blaghen
- Faculté des Sciences, Laboratoire de Microbiologie, Pharmacologie, Biotechnologie et Environnement, Casablanca, Morocco
| | - Malika Messoudi
- Institut Pasteur du Maroc, Laboratoire des Mycobactéries, Casablanca, Morocco
| | - Khalid Belghmi
- Institut Pasteur du Maroc, Laboratoire des Mycobactéries, Casablanca, Morocco
| | - Jamal Mouslim
- Faculté des Sciences Ben M'Sik, Laboratoire d'Ecologie et Environment, Casablanca, Morocco
| | - Mohammed El Mzibri
- Centre National de l'Energie, des Sciences et Techniques Nucléaires, Département des Sciences du Vivant, Unité de Recherches Médicales et Biologiques, Rabat, Morocco
| | | | - Meriem Khyatti
- Institut Pasteur du Maroc, Laboratoire des Mycobactéries, Casablanca, Morocco
| | - Imane Chaoui
- Centre National de l'Energie, des Sciences et Techniques Nucléaires, Département des Sciences du Vivant, Unité de Recherches Médicales et Biologiques, Rabat, Morocco
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Elfarnini M, Abdel-hamid A, Achir M, Jamaleddine J, Blaghen M. Volatile Compounds in the Skin Essential Oil of Moroccan Feijoa sellowiana. ACTA ACUST UNITED AC 2018. [DOI: 10.9734/ejmp/2018/40817] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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Elfarnini M, Abdel-hamid A, Achir M, Jamaleddine J, Blaghen M. Antibacterial and antifungal activities of hexane and acetone extracts of sheets and fruits of Feijoa sellowiana O. ACTA ACUST UNITED AC 2018. [DOI: 10.30574/gscbps.2018.3.1.0024] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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Kim BS, Blaghen M, Lee KM. Methyl Red Decolorization Efficiency of a Korea Strain of Aspergillus sp. Immobilized into Different Polymeric Matrices. Water Environ Res 2017; 89:606-613. [PMID: 28079018 DOI: 10.2175/106143017x14839994522669] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
Intensive research studies have revealed that fungal decolorization of dye wastewater is a promising replacement for the current process of dye wastewater decolorization. The authors isolated an Aspergillus sp. from the effluent of a textile industry area in Korea and assessed the effects of a variety of operational parameters on the decolorization of methyl red (MR) by this strain of Aspergillus sp. This Aspergillus sp. was then immobilized by entrapment in several polymeric matrices and the effects of operational conditions on MR decolorization were investigated again. The optimal decolorization activity of this Aspergillus sp. was observed in 1% glucose at a temperature of 37 °C and pH of 6.0. Furthermore, stable decolorization efficiency was observed when fungal biomass was immobilized into alginate gel during repeated batch experiment. These results suggest that the Aspergillus sp. isolated in Korea could be used to treat industrial wastewaters containing MR dye.
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Al Jahid A, Essabaq S, Elamrani A, Blaghen M, Jamal Eddine J. Chemical Composition, Antimicrobial and Antioxidant Activities of the Essential Oil and the Hydro-alcoholic Extract of Artemisia campestris L. Leaves from Southeastern Morocco. ACTA ACUST UNITED AC 2016. [DOI: 10.1080/22311866.2016.1268068] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
Affiliation(s)
- Abdellah Al Jahid
- Department of Chemistry, Faculty of Science Ain-Chock, Hassan II University, Casablanca, Morocco
| | - Sadik Essabaq
- Department of Chemistry, Faculty of Science Ain-Chock, Hassan II University, Casablanca, Morocco
| | - Abdelaziz Elamrani
- Department of Chemistry, Faculty of Science Ain-Chock, Hassan II University, Casablanca, Morocco
| | - Mohamed Blaghen
- Department of Biology, Faculty of Science Ain-Chock, Hassan II University, Casablanca, Morocco
| | - Jamal Jamal Eddine
- Department of Chemistry, Faculty of Science Ain-Chock, Hassan II University, Casablanca, Morocco
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Kim BS, Blaghen M, Hong HS, Lee KM. Purification and characterization of a melanin biodegradation enzyme fromGeotrichumsp. Int J Cosmet Sci 2016; 38:622-626. [DOI: 10.1111/ics.12337] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/17/2016] [Accepted: 04/30/2016] [Indexed: 11/26/2022]
Affiliation(s)
- B. S. Kim
- Bonecell Biotech Inc.; 77, Dunsan-dong Seo-gu Daejeon 302-120 Korea
- Department Molecular Biology; College of Natural Science; Chonbuk National University; Jeonju 561-756 Korea
| | - M. Blaghen
- Laboratory of Microbiology; Biotechnology and Environment; Faculty of Sciences; University Hassan II; Casablanca 20100 Morocco
| | - H.-S. Hong
- CheBiGen Inc.; Deokjin-gu Jeonju Chonbuk 561-202 Korea
| | - K.-M. Lee
- Department Molecular Biology; College of Natural Science; Chonbuk National University; Jeonju 561-756 Korea
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Bargiela R, Mapelli F, Rojo D, Chouaia B, Tornés J, Borin S, Richter M, Del Pozo MV, Cappello S, Gertler C, Genovese M, Denaro R, Martínez-Martínez M, Fodelianakis S, Amer RA, Bigazzi D, Han X, Chen J, Chernikova TN, Golyshina OV, Mahjoubi M, Jaouanil A, Benzha F, Magagnini M, Hussein E, Al-Horani F, Cherif A, Blaghen M, Abdel-Fattah YR, Kalogerakis N, Barbas C, Malkawi HI, Golyshin PN, Yakimov MM, Daffonchio D, Ferrer M. Bacterial population and biodegradation potential in chronically crude oil-contaminated marine sediments are strongly linked to temperature. Sci Rep 2015; 5:11651. [PMID: 26119183 PMCID: PMC4484246 DOI: 10.1038/srep11651] [Citation(s) in RCA: 55] [Impact Index Per Article: 6.1] [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: 11/02/2014] [Accepted: 05/29/2015] [Indexed: 01/16/2023] Open
Abstract
Two of the largest crude oil-polluted areas in the world are the semi-enclosed Mediterranean and Red Seas, but the effect of chronic pollution remains incompletely understood on a large scale. We compared the influence of environmental and geographical constraints and anthropogenic forces (hydrocarbon input) on bacterial communities in eight geographically separated oil-polluted sites along the coastlines of the Mediterranean and Red Seas. The differences in community compositions and their biodegradation potential were primarily associated (P < 0.05) with both temperature and chemical diversity. Furthermore, we observed a link between temperature and chemical and biological diversity that was stronger in chronically polluted sites than in pristine ones where accidental oil spills occurred. We propose that low temperature increases bacterial richness while decreasing catabolic diversity and that chronic pollution promotes catabolic diversification. Our results further suggest that the bacterial populations in chronically polluted sites may respond more promptly in degrading petroleum after accidental oil spills.
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Affiliation(s)
- Rafael Bargiela
- Institute of Catalysis, Consejo Superior de Investigaciones Científicas, Madrid, Spain
| | - Francesca Mapelli
- Department of Food, Environmental and Nutritional Sciences (DeFENS), University of Milan, Milan, Italy
| | - David Rojo
- Centro de Metabolómica y Bioanálisis (CEMBIO), Facultad de Farmacia, Universidad CEU San Pablo, Campus Montepríncipe, Madrid, Spain
| | - Bessem Chouaia
- Department of Food, Environmental and Nutritional Sciences (DeFENS), University of Milan, Milan, Italy
| | - Jesús Tornés
- Institute of Catalysis, Consejo Superior de Investigaciones Científicas, Madrid, Spain
| | - Sara Borin
- Department of Food, Environmental and Nutritional Sciences (DeFENS), University of Milan, Milan, Italy
| | | | - Mercedes V. Del Pozo
- Institute of Catalysis, Consejo Superior de Investigaciones Científicas, Madrid, Spain
| | - Simone Cappello
- Institute for Coastal Marine Environment, Consiglio Nazionale delle Ricerche, Messina, Italy
| | | | - María Genovese
- Institute for Coastal Marine Environment, Consiglio Nazionale delle Ricerche, Messina, Italy
| | - Renata Denaro
- Institute for Coastal Marine Environment, Consiglio Nazionale delle Ricerche, Messina, Italy
| | | | | | - Ranya A. Amer
- Environmental Biotechnology Department, Genetic Engineering and Biotechnology Research Institute, City for Scientific Research & Technology Applications, Alexandria, Egypt
| | | | - Xifang Han
- BGI Tech Solutions Co., Ltd, Main Building, Beishan Industrial Zone, Yantian District, Shenzhen, China
| | - Jianwei Chen
- BGI Tech Solutions Co., Ltd, Main Building, Beishan Industrial Zone, Yantian District, Shenzhen, China
| | | | | | - Mouna Mahjoubi
- LR Biotechnology and Bio-Geo Resources Valorization (LR11ES31), Higher Institute for Biotechnology - University of Manouba, Biotechpole of Sidi Thabet, 2020, Sidi Thabet, Ariana, Tunisia
| | - Atef Jaouanil
- Laboratory of Microorganisms and Active Biomolecules, University of Tunis El Manar, Tunis, Tunisia
| | - Fatima Benzha
- Laboratory of Microbiology, Biotechnology and Environment, University Hassan II – Ain Chock, Casablanca, Morocco
| | | | - Emad Hussein
- Department of Biological Sciences, Yarmouk University, Irbid, Jordan
| | - Fuad Al-Horani
- Faculty of Marine Sciences, The University of Jordan-Aqaba, Jordan
| | - Ameur Cherif
- Laboratory of Microorganisms and Active Biomolecules, University of Tunis El Manar, Tunis, Tunisia
| | - Mohamed Blaghen
- Laboratory of Microbiology, Biotechnology and Environment, University Hassan II – Ain Chock, Casablanca, Morocco
| | - Yasser R. Abdel-Fattah
- Bioprocess Development Department, Genetic Engineering and Biotechnology Research Institute, City for Scientific Research & Technology Applications, Alexandria, Egypt
| | | | - Coral Barbas
- Centro de Metabolómica y Bioanálisis (CEMBIO), Facultad de Farmacia, Universidad CEU San Pablo, Campus Montepríncipe, Madrid, Spain
| | - Hanan I. Malkawi
- Hamdan Bin Mohammad Smart University, Academic City, Dubai, United Arab Emirates
| | | | - Michail M. Yakimov
- Institute for Coastal Marine Environment, Consiglio Nazionale delle Ricerche, Messina, Italy
| | - Daniele Daffonchio
- Department of Food, Environmental and Nutritional Sciences (DeFENS), University of Milan, Milan, Italy
- King Abdullah University of Science and Technology, BESE Division, Thuwal, 23955-6900, Kingdom of Saudi Arabia
| | - Manuel Ferrer
- Institute of Catalysis, Consejo Superior de Investigaciones Científicas, Madrid, Spain
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Fodelianakis S, Antoniou E, Mapelli F, Magagnini M, Nikolopoulou M, Marasco R, Barbato M, Tsiola A, Tsikopoulou I, Giaccaglia L, Mahjoubi M, Jaouani A, Amer R, Hussein E, Al-Horani FA, Benzha F, Blaghen M, Malkawi HI, Abdel-Fattah Y, Cherif A, Daffonchio D, Kalogerakis N. Allochthonous bioaugmentation in ex situ treatment of crude oil-polluted sediments in the presence of an effective degrading indigenous microbiome. J Hazard Mater 2015; 287:78-86. [PMID: 25621834 DOI: 10.1016/j.jhazmat.2015.01.038] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/29/2014] [Revised: 12/12/2014] [Accepted: 01/13/2015] [Indexed: 06/04/2023]
Abstract
Oil-polluted sediment bioremediation depends on both physicochemical and biological parameters, but the effect of the latter cannot be evaluated without the optimization of the former. We aimed in optimizing the physicochemical parameters related to biodegradation by applying an ex-situ landfarming set-up combined with biostimulation to oil-polluted sediment, in order to determine the added effect of bioaugmentation by four allochthonous oil-degrading bacterial consortia in relation to the degradation efficiency of the indigenous community. We monitored hydrocarbon degradation, sediment ecotoxicity and hydrolytic activity, bacterial population sizes and bacterial community dynamics, characterizing the dominant taxa through time and at each treatment. We observed no significant differences in total degradation, but increased ecotoxicity between the different treatments receiving both biostimulation and bioaugmentation and the biostimulated-only control. Moreover, the added allochthonous bacteria quickly perished and were rarely detected, their addition inducing minimal shifts in community structure although it altered the distribution of the residual hydrocarbons in two treatments. Therefore, we concluded that biodegradation was mostly performed by the autochthonous populations while bioaugmentation, in contrast to biostimulation, did not enhance the remediation process. Our results indicate that when environmental conditions are optimized, the indigenous microbiome at a polluted site will likely outperform any allochthonous consortium.
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Affiliation(s)
- S Fodelianakis
- School of Environmental Engineering, Technical University of Crete, Chania, Greece; King Abdullah University of Science and Technology, Thuwal, Saudi Arabia
| | - E Antoniou
- School of Environmental Engineering, Technical University of Crete, Chania, Greece
| | - F Mapelli
- Department of Food, Environment and Nutritional Sciences, University of Milan, Italy
| | | | - M Nikolopoulou
- School of Environmental Engineering, Technical University of Crete, Chania, Greece
| | - R Marasco
- King Abdullah University of Science and Technology, Thuwal, Saudi Arabia; Department of Food, Environment and Nutritional Sciences, University of Milan, Italy
| | - M Barbato
- Department of Food, Environment and Nutritional Sciences, University of Milan, Italy
| | - A Tsiola
- Hellenic Center for Marine Research, Heraklion, Crete, Greece
| | - I Tsikopoulou
- Hellenic Center for Marine Research, Heraklion, Crete, Greece; Department of Biology, University of Crete,Heraklion, Crete, Greece
| | | | - M Mahjoubi
- LR11-ES31 Biotechnology and Bio-Geo Resources Valorization, Higher Institute for Biotechnology, Biotechpole SidiThabet, University of Manouba, 2020 Ariana, Tunisia
| | - A Jaouani
- Laboratory of Microorganisms and Active Biomolecules, Faculty of Sciences of Tunis, University of Tunis El Manar, 2092 Tunis, Tunisia
| | - R Amer
- Genetic Engineering and Biotechnology Research Institute, City for Scientific Research and Technology Applications (SRTA-City), Alexandria, Egypt
| | - E Hussein
- Department of Biological Sciences, Yarmouk University, 211-63 Irbid, Jordan
| | - F A Al-Horani
- Faculty of Marine Sciences, The University of Jordan-Aqaba, 7110 Aqaba, Jordan
| | - F Benzha
- Laboratory of Microbiolgy, Biotechnology and Environmrent, University Hassan II Casablanca, Faculty of Sciences aîn-chock, B.P. 5366 Morocco
| | - M Blaghen
- Laboratory of Microbiolgy, Biotechnology and Environmrent, University Hassan II Casablanca, Faculty of Sciences aîn-chock, B.P. 5366 Morocco
| | - H I Malkawi
- Department of Biological Sciences, Yarmouk University, 211-63 Irbid, Jordan; Hamdan Bin Mohammed Smart University, Academic City, Dubai, United Arab Emirates
| | - Y Abdel-Fattah
- Genetic Engineering and Biotechnology Research Institute, City for Scientific Research and Technology Applications (SRTA-City), Alexandria, Egypt
| | - A Cherif
- LR11-ES31 Biotechnology and Bio-Geo Resources Valorization, Higher Institute for Biotechnology, Biotechpole SidiThabet, University of Manouba, 2020 Ariana, Tunisia; Laboratory of Microorganisms and Active Biomolecules, Faculty of Sciences of Tunis, University of Tunis El Manar, 2092 Tunis, Tunisia
| | - D Daffonchio
- King Abdullah University of Science and Technology, Thuwal, Saudi Arabia; Department of Food, Environment and Nutritional Sciences, University of Milan, Italy
| | - N Kalogerakis
- School of Environmental Engineering, Technical University of Crete, Chania, Greece.
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Hosseinkhani B, Hennebel T, Van Nevel S, Verschuere S, Yakimov MM, Cappello S, Blaghen M, Boon N. Biogenic nanopalladium based remediation of chlorinated hydrocarbons in marine environments. Environ Sci Technol 2013; 48:550-557. [PMID: 24350777 DOI: 10.1021/es403047u] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
Biogenic catalysts have been studied over the last 10 years in freshwater and soil environments, but neither their formation nor their application has been explored in marine ecosystems. The objective of this study was to develop a biogenic nanopalladium-based remediation method for reducing chlorinated hydrocarbons from marine environments by employing indigenous marine bacteria. Thirty facultative aerobic marine strains were isolated from two contaminated sites, the Lagoon of Mar Chica, Morocco, and Priolo Gargallo Syracuse, Italy. Eight strains showed concurrent palladium precipitation and biohydrogen production. X-ray diffraction and thin section transmission electron microscopy analysis indicated the presence of metallic Pd nanoparticles of various sizes (5-20 nm) formed either in the cytoplasm, in the periplasmic space, or extracellularly. These biogenic catalysts were used to dechlorinate trichloroethylene in simulated marine environments. Complete dehalogenation of 20 mg L(-1) trichloroethylene was achieved within 1 h using 50 mg L(-1) biogenic nanopalladium. These biogenic nanoparticles are promising developments for future marine bioremediation applications.
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Affiliation(s)
- Baharak Hosseinkhani
- Laboratory of Microbial Ecology and Technology (LabMET), Ghent University , Coupure Links 653, B-9000 Gent, Belgium
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Moutaouakkil A, Blaghen M. Decolorization of the anthraquinone dye Cibacron Blue 3G-A with immobilized Coprinus cinereus in fluidized bed bioreactor. APPL BIOCHEM MICRO+ 2011. [DOI: 10.1134/s000368381101008x] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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Moutaouakkil A, Blaghen M. Decolorization of the anthraquinone dye Cibacron Blue 3G-A with immobilized Coprinus cinereus in fluidized bed bioreactor. Prikl Biokhim Mikrobiol 2011; 47:66-72. [PMID: 21438473] [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: 05/30/2023]
Abstract
Coprinus cinereus, which was able to decolorize the anthraquinone dye Cibacron Blue 3G-A (CB) enzymatically, was used as a biocatalyst for the decolorization of synthetic solutions containing this reactive dye. Coprinus cinereus was immobilized in both calcium alginate and polyacrylamide gels, and was used for the decolorization of CB from synthetic water by using a fluidized bed bioreactor. The highest specific decolorization rate was obtained when Coprinus cinereus was entrapped in calcium alginate beads, and was of about 3.84 mg g(-1) h(-1) with a 50% conversion time (t1/2) of about 2.60 h. Moreover, immobilized fungal biomass in calcium alginate continuously decolorized CB even after 7 repeated experiments without significant loss of activity, while polyacrylamide-immobilized fungal biomass retained only 67% of its original activity. The effects of some physicochemical parameters such as temperature, pH and dye concentration on decolorization performance of isolated fungal strain were also investigated.
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Affiliation(s)
- A Moutaouakkil
- Unit of Radio-Lmmuno-Analyse, Division of Life Science Applications, National Center of Energy, Sciences and Nuclear Techniques (CNESTEN), 10001 Rabat, Marocco.
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Bakhouch K, Oulad-Lahcen A, Bensghir R, Blaghen M, Elfilali KM, Ezzikouri S, Abidi O, Hassar M, Wakrim L. The prevalence of resistance-associated mutations to protease and reverse transcriptase inhibitors in treatment-naïve (HIV1)-infected individuals in Casablanca, Morocco. J Infect Dev Ctries 2009; 3:380-91. [PMID: 19759509 DOI: 10.3855/jidc.247] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/14/2008] [Indexed: 10/31/2022] Open
Abstract
BACKGROUND The widespread use of antiretroviral agents and the growing occurrence of HIV-1 strains resistant to these drugs have given rise to serious concerns regarding the transmission of resistant viruses to newly infected persons, which may reduce the efficacy of a first-line antiretroviral therapy. METHODOLOGY RNA was extracted from plasma samples of 98 treatment-naïve individuals with a plasma HIV RNA viral load of at least 1,000 copies/ml. Both protease (pr) and reverse transcriptase (rt) were amplified and sequenced using an automated sequencer. National Agency for AIDS Research (ANRS) and Stanford HIV database algorithms were used for interpretation of resistance data. RESULTS In the protease segment, various minor mutations were present in the majority of the sequenced samples with high frequencies. Only two major mutations, M46L and V82L, were separately found in three individuals of 71 (4.2%) with one carrying both mutations. In the reverse transcriptase gene, no NNRTIs-associated resistance mutations were detected. Only one patient of 70 (1.4%) carried the F77L mutation that is associated with NRTIs resistance. Genetic subtyping revealed that 74.6% of samples were infected with subtype B, 15.5% with CRF02_AG, 4.2% with CRF01_AE, 1.4% with C, 2.8% with G and 1.4% with subtype F2. CONCLUSIONS The low prevalence of major mutations associated with resistance to antiretroviral drugs (ARVs) among drug-naïve individuals studied suggests that the routine of drug resistance testing may be unnecessary for all Moroccan individuals newly diagnosed or all patients beginning antiretroviral therapy. Nevertheless, continuous surveillance is required since greater access to antiretroviral drugs is expected in Morocco.
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Affiliation(s)
- Khadija Bakhouch
- Laboratoire de Virologie, Institut Pasteur du Maroc, 1 Place Louis Pasteur, 20100 Casablanca, Morocco.
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Rabi L, Moutaouakkil A, Blaghen M. Ionophoric properties of atropine: complexation and transport of Na+, K+, Mg2+ and Ca2+ ions across a liquid membrane. Nat Prod Res 2008; 22:547-53. [PMID: 18415864 DOI: 10.1080/14786410701592620] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
Abstract
The activity of atropine on the complexation and transport of Na(+), K(+), Mg(2+) and Ca(2+) ions across a liquid membrane was investigated using a spectrophotometric method. Atropine is a natural drug that blocks muscarinic receptors. It is a competitive antagonist of the action of acetylcholine and other muscarinic agonists. Atropine is shown to extract Na(+), K(+), Mg(2+) and Ca(2+) ions from an aqueous phase into an organic one with a preference for Ca(2+) ions. According to a kinetic study, divalent cations (Mg(2+) and Ca(2+)) are more rapidly transported than monovalent ones (Na(+) and K(+)). In both complexation and transport, the flux of the ions increases with the increase of atropine concentration. Atropine might act on the membrane permeability; its complexation and ionophoric properties shed new lights on its therapeutic properties.
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Affiliation(s)
- Latifa Rabi
- Unit of Bio-industry and Molecular Toxicology, Laboratory of Microbiology, Biotechnology and Environment, Faculty of Sciences Aïn Chock, University Hassan II-Aïn Chock, Morocco
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Takati N, Mountassif D, Taleb H, Lee K, Blaghen M. Purification and partial characterization of paralytic shellfish poison-binding protein from Acanthocardia tuberculatum. Toxicon 2007; 50:311-21. [PMID: 17631374 DOI: 10.1016/j.toxicon.2007.04.016] [Citation(s) in RCA: 14] [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] [Received: 11/29/2006] [Revised: 04/21/2007] [Accepted: 04/23/2007] [Indexed: 11/21/2022]
Abstract
A paralytic shellfish poison-binding protein (PSPBP) was purified 16.6-fold from the foot of the Moroccan cockles Acanthocardia tuberculatum. Using affinity chromatography, 2.5mg of PSPBP showing homogeneity on sodium dodecyl sulfate-polyacrylamide gel electrophoresis (SDS-PAGE) was obtained from 93 mg of crude extract. The purified PSPBP exhibits a specific activity of about 2.78 mU/mg proteins and has estimated molecular weight of 181 kDa. Observation of a single band equivalent to 88 kDa on SDS-PAGE under reducing conditions suggested it to be a homodimer. The optimal temperature and pH for the purified PSPBP were respectively 30 degrees C and 7.0.
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Affiliation(s)
- Nadia Takati
- Unit of Bio-Industry and Molecular Toxicology, Laboratory of Microbiology, Biotechnology, Pharmacology and Environment, Faculty of Sciences Aïn Chock, University Hassan II-Aïn Chock, Km 8 route d'El Jadida, B.P. 5366, Mâarif, Casablanca, Morocco
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21
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Pacaud-Mercier K, Blaghen M, Lee KM, Tritsch D, Biellmann JF. Electron transfer from NADH bound to horse liver alcohol dehydrogenase (NAD+ dependent dehydrogenase): visualisation of the activity in the enzyme crystals and adsorption of formazan derivatives by these crystals. Bioorg Chem 2006; 35:59-67. [PMID: 17123572 DOI: 10.1016/j.bioorg.2006.09.005] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/05/2006] [Revised: 09/21/2006] [Accepted: 09/22/2006] [Indexed: 11/24/2022]
Abstract
The crystals of holoenzyme from native and cross-linked alcohol dehydrogenase exhibit electron transfer from NADH to phenazinium methosulfate (PMS), and then to the tetrazolium salt sodium 3,3'-{1-[(phenylamino)carbonyl]-3,4-tetrazolium}-bis(4-methoxy-6-nitro)benzenesulfonate (XXT). The slow dissociation of the cofactor and/or the conformational change associated can now be bypassed. The reduction product, formazan, did not diffuse out of the crystals in buffer and the crystals turned colored. In the presence of dimethyl sulfoxide or dimethoxyethane, the formazan diffused out to the solution. The reaction rates were found to be, respectively, 18% and 15% of the redox reaction rate of ethanol with cinnamaldehyde, close to the activity determined for the enzyme in solution in the presence of dimethoxyethane. The use of system PMS-tetrazolium salt is a useful tool to visualize the activity of dehydrogenases and other electron transferring systems in the crystalline state. The adsorption of formazan by the alcohol dehydrogenase crystals occurs in solution.
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Zeroual Y, Kim BS, Kim CS, Blaghen M, Lee KM. A Comparative Study on Biosorption Characteristics of Certain Fungi for Bromophenol Blue Dye. Appl Biochem Biotechnol 2006; 134:51-60. [PMID: 16891666 DOI: 10.1385/abab:134:1:51] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/30/2005] [Revised: 11/11/2005] [Accepted: 12/26/2005] [Indexed: 11/11/2022]
Abstract
Laboratory investigations of the potential use of dried biomasses of Rhizopus stolonifer, Fusarium sp., Geotrichum sp., and Aspergillus fumigatus as biosorbents for the removal of bromophenol blue (BPB) dye from aqueous solutions were conducted. Kinetics studies indicated that the BPB dye uptake processes can be well described by the pseudo-second-order model. The fungal biomasses exhibited the highest dye biosorption at pH 2.0. The Langmuir adsorption model appears to fit the dye biosorption better than the Freundlich model, with maximum dye uptake capacities ranging from 526 to 1,111 mg/g, depending on the biomass used.
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Affiliation(s)
- Youssef Zeroual
- Laboratory of Enzyme Technology, College of Natural Science, College of Engineering, Chonbuk National Univ Chonju 561-756, Korea
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Sagou R, Amanhir R, Taleb H, Vale P, Blaghen M, Loutfi M. Comparative study on differential accumulation of PSP toxins between cockle (Acanthocardia tuberculatum) and sweet clam (Callista chione). Toxicon 2005; 46:612-8. [PMID: 16168451 DOI: 10.1016/j.toxicon.2005.06.020] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/13/2005] [Accepted: 06/17/2005] [Indexed: 11/28/2022]
Abstract
At the western Mediterranean coast of Morocco, the cockle (Acanthocardia tuberculatum) contained persistent high levels of paralytic shellfish toxins for several years, while other bivalve molluscs such as sweet clam (Callista chione) from the same vicinity were contaminated seasonally to a much lesser extent. In order to understand the causes of this prolonged contamination, a comparative study on PSP decontamination between sweet clam and cockle was conducted from November 2001 until June 2002. PSP toxicity was analysed by automated pre-column oxidation (Prechromatographic oxidation and LC-FD) in several organs of both species, namely digestive gland, foot, gill, mantle, muscle and siphon for sweet clams. The results showed that cockle sequester PSP toxins preferably in non-visceral organs (Foot, gill and mantle) contrary to sweet clam that sequester them in visceral tissues (digestive gland). The toxin profile of cockle organs indicated dominance of dcSTX, whereas sweet clam tissues contained especially C-toxins. Substantial differences in toxin profile between cockle and sweet clam, from the same area as well as from the composition of PSP toxin producer, Gymnodinium catenatum, confirm the bioconversion of PSP toxins in cockle.
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Affiliation(s)
- Reqia Sagou
- Institut National de Recherche Halieutique, 2 rue Tiznit, Casablanca, Morocco.
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Moutaouakkil A, Zeroual Y, Dzayri FZ, Talbi M, Lee K, Blaghen M. Decolorization of azo dyes with Enterobacter agglomerans immobilized in different supports by using fluidized bed bioreactor. Curr Microbiol 2004; 48:124-9. [PMID: 15057480 DOI: 10.1007/s00284-003-4143-0] [Citation(s) in RCA: 32] [Impact Index Per Article: 1.6] [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: 12/01/2022]
Abstract
Immobilized cells of Enterobacter agglomerans, able to reduce azo dyes enzymatically, were used as a biocatalyst for the decolorization of synthetic medium containing the toxic azo dye methyl red (MR). This bacterial strain exhibits high ability to completely decolorize 100 mg/L of MR after only 6 h of incubation under aerobic conditions. Cells of E. agglomerans were immobilized in calcium alginate, polyacylamide, cooper beech, and vermiculite, and were used for the decolorization of MR from synthetic water by using a fluidized bed bioreactor. The highest specific decolorization rate was obtained when E. agglomerans was entrapped in calcium alginate beads and was of about 3.04 mg MR/g cell/h with a 50% conversion time ( t(1/2)) of about 1.6 h. Moreover, immobilized cells in calcium alginate continuously decolorized MR even after seven repeated experiments without significant loss of activity, while polyacrylamide-, cooper beech-, and vermiculite-immobilized cells retained only 62, 15, and 13% of their original activity, respectively.
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Affiliation(s)
- Adnane Moutaouakkil
- Unit of Bio-industry and Molecular Toxicology, Laboratory of Microbiology, Biotechnology and Environment, Faculty of Sciences Aïn Chock, University Hassan II-Aïn Chock, Km 8 route d'El Jadida, BP. 5366 Mâarif, 20100 Casablanca, Morocco
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Zeroual Y, Moutaouakkil A, Dzairi FZ, Talbi M, Chung PU, Lee K, Blaghen M. Biosorption of mercury from aqueous solution by Ulva lactuca biomass. Bioresour Technol 2003; 90:349-351. [PMID: 14575961 DOI: 10.1016/s0960-8524(03)00122-6] [Citation(s) in RCA: 29] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/24/2023]
Abstract
The mercury biosorption onto non-living protonated biomass of Ulva lactuca, as an alternative method for mercury removal from aqueous solutions, was investigated. Batch equilibrium tests showed that at pH 3.5, 5.5 and 7 the maxima of mercury uptake values, according to Langmuir adsorption isotherm, were 27.24, 84.74 and 149.25 mg/g, respectively. The ability of Ulva lactuca biomass to adsorb mercury in fixed-bed column, was investigated as well. The influence of column bed height, flow rate and effluent initial concentration of metal was studied. The adsorbed metal ions were easily desorbed from the algal biomass with 0.3 N H(2)SO(4) solution. After acid desorption and regeneration with distilled water, the biomass could be reused for other biosorption assays with similar performances.
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Affiliation(s)
- Youssef Zeroual
- Laboratory of Microbiology, Biotechnology and Environment, Faculty of Sciences Ai;n chock, University Hassan II-Ai;n chock, Km 8 Route d'El Jadida, B.P. 5366 Mâarif, Casablanca, Morocco
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El Arch M, Satrani B, Farah A, Bennani L, Boriky D, Fechtal M, Blaghen M, Talbi M. Composition chimique et activités antimicrobienne et insecticide de l'huile essentielle deMentha rotundifoliadu Maroc. ACTA ACUST UNITED AC 2003. [DOI: 10.1080/12538078.2003.10515996] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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Moutaouakkil A, Zeroual Y, Zohra Dzayri F, Talbi M, Lee K, Blaghen M. Purification and partial characterization of azoreductase from Enterobacter agglomerans. Arch Biochem Biophys 2003; 413:139-46. [PMID: 12706351 DOI: 10.1016/s0003-9861(03)00096-1] [Citation(s) in RCA: 91] [Impact Index Per Article: 4.3] [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
Azoreductase, an enzyme catalyzing the reductive cleavage of the azo bond of methyl red (MR) and related dyes, was purified to electrophoretic homogeneity from Enterobacter agglomerans. This bacterial strain, isolated from dye-contaminated sludge, has a higher ability to grow, under aerobic conditions, on culture medium containing 100mg/L of MR. The enzyme was purified approximately 90-fold with 20% yield by ammonium sulfate precipitation, followed by three steps of column chromatography (gel-filtration, anion-exchange, and dye-affinity). The purified enzyme is a monomer with a molecular weight of 28,000 Da. The maximal azoreductase activity was observed at pH 7.0 and at 35 degrees C. This activity was NADH dependent. The K(m) values for both NADH and MR were 58.9 and 29.4 microM, respectively. The maximal velocity (V(max)) was 9.2 micromol of NADH min(-1)mg(-1). The purified enzyme is inhibited by several metal ions including Fe(2+) and Cd(2+).
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Affiliation(s)
- Adnane Moutaouakkil
- Unit of Bio-industry and Molecular Toxicology, Laboratory of Microbiology, Biotechnology and Environment, Faculty of Sciences Aïn Chock, University Hassan II-Aïn Chock, Km 8 route d'El Jadida, B.P. 5366 Mâarif, Casablanca, Morocco.
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Abstract
Since 1992, a monitoring program for bivalve molluscs contaminated by algal toxins was established at different stations along the Mediterranean Moroccan shores. The monitored stations were tested every 2 weeks. The presence of toxicity was determined using the mouse bioassay method. Toxin profile was carried out by HPLC/FD in selected contaminated tissues. According to the outcomes of this surveillance from 1994 to 1999, reliable information on toxicity of shellfish was obtained. They indicate that PSP is a recurrent toxicity in molluscs along the Mediterranean shore of Morocco. It has been noted a difference of PSP accumulation among individual shellfish. The cockle (Achanthocardia tuberculatum) presents toxicity throughout the year, while other specimens from the same area such as clam (Callista chione), warty venus (Venus gallina) and marine beans (Donax trunculus) accumulate it seasonally from January to April, after which they depurate the toxin. Moreover, the study of toxin profiles among individual shellfish was undertaken. It was found that shellfish presented a complex profile pointing to contamination by Gymnodinium catenatum.
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Affiliation(s)
- H Taleb
- Institut National de Recherche Halieutique, 2 Rue de Tiznit, Casablanca, Morocco.
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Abstract
From the aerial parts of Artemisia dracunculus, one known alkamide, pellitorine, two new alkamides neopellitorine A and neopellitorine B, and one known coumarin herniarine were isolated. Structures were elucidated by means of UV, IR, MS, 1H and 13C NMR. These compounds showed insecticidal activity against Sitophilus oryzae and Rhyzopertha dominica at 200 microg/ml concentrations.
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Affiliation(s)
- B Saadali
- Laboratoire de Chimie Analytique et Structurale, associé au CNRSTP, Faculté des Sciences, Ben M'Sik BP7960, Casablanca, Morocco
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Zeroual Y, Moutaouakkil A, Blaghen M. Volatilization of mercury by immobilized bacteria (Klebsiella pneumoniae) in different support by using fluidized bed bioreactor. Curr Microbiol 2001; 43:322-7. [PMID: 11688795 DOI: 10.1007/s002840010310] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.1] [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: 11/28/2022]
Abstract
Klebsiella pneumoniae, a mercury-resistant bacterial strain able to reduce ionic mercury to metallic mercury, was isolated from wastewater of Casablanca. This strain exhibits high minimal inhibition concentrations for heavy metals such as mercury 2400 microM, lead 8000 microM, silver 2400 microM, and cadmium 1000 microM. This bacterium was immobilized in alginate, polyacrylamide, vermiculite, and cooper beech and was used for removing mercury from a synthetic water polluted by mercury by using a fluidized bead bioreactor. Immobilized bacterial cells of Klebsiella pneumoniae could effectively volatilize mercury and detoxify mercury compounds. Moreover, the efficiency of mercury volatilization was much greater than with the native cells. The highest cleanup and volatilization rates were obtained when Klebsiella pneumoniae was entrapped in alginate beads, with a cleanup rate of 100% and a volatilization rate of 89%. Immobilized cells in alginate continuously volatilized mercury even after 10 days without loss of activity.
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Affiliation(s)
- Y Zeroual
- Laboratoire de Microbiologie, Biotechnologie et Environnement, Faculté des Sciences Aïn chock, Université Hassan II, Casablanca, Morocco
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Tagmouti-Talha F, Moutaouakkil A, Taib N, Mikou A, Talbi M, Fellat-Zerrouk K, Blaghen M. Detection of paralytic and diarrhetic shellfish toxins in Moroccan cockles (Acanthocardia tuberculata). Bull Environ Contam Toxicol 2000; 65:707-716. [PMID: 11080350 DOI: 10.1007/s0012800181] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
Affiliation(s)
- F Tagmouti-Talha
- Laboratory of Biochemistry, Faculty of Medicine and Pharmacy, Casablanca, Morocco
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Abstract
Sewage water of Casablanca, an industrial city in Morocco, was studied for microorganisms resistant to heavy metals. Isolates were purified and collected on agar slants to be screened for resistance to heavy metals, including mercury in vitro. The strains that showed high resistance to heavy metals were also studied for their resistance to antibiotics and aromatic hydrocarbons. Results indicated that the strains most resistant to all tested products belonged to Ps. fluorescens, Ps. aeruginosa, Klebsiella pneumoniae, Proteus mirabilis, and Staphylococcus sp. These strains exhibit high minimal inhibitory concentrations for heavy metals such as cadmium (2 mm) or mercury (1.2 mm). Growth of Ps. fluorescens and Klebsiella pneumoniae in the presence of heavy metals was also determined, and the growth curves indicated that mercury, copper, and zinc present a slight inhibitory action, while cadmium and silver could have a potent inhibitory action on growth compared with the controls. These studies also investigated growth in media containing aromatic compounds as the sole source of carbon. The results demonstrate that these strains could be good candidates for remediation of some heavy metals and aromatic compounds in heavily polluted sites.
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Affiliation(s)
- B K Filali
- Laboratoire de Biotechnologie et Environnement, Université Hassan II, Faculté des Sciences Aïn chock, Km 8 route d'El Jadida, B.P. 5366 Mâarif, Casablanca, Morocco
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Blaghen M, Lahlou N, Dzairi FZ, Moutaouakkil A, Talbi M. Complexation and ionophoric properties of taxol and colchicine: complex formation and transport of sodium, potassium, magnesium and calcium ions across a liquid membrane. Nat Toxins 2000; 7:179-85. [PMID: 10945480 DOI: 10.1002/1522-7189(200009/10)7:5<179::aid-nt57>3.0.co;2-#] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Abstract
We report the activities of taxol (an anticancer drug) and colchicine, which are inhibitors of microtubule organization, on the complexation and transport of Na+, K+, Mg2+ and Ca2+ ions across a liquid membrane, using a spectrophotometric procedure. Taxol, a diterpenoid compound, that has been demonstrated to possess a potent antitumour activity, is shown to extract Na+, K+, Mg2+ and Ca2+ ions from the aqueous solution to the organic phase with preference for Ca2+ ions. A kinetic study of the transport and complexation of Na+, K+, Mg2+ and Ca2+ ions through a liquid membrane revealed that the K+ ion is more rapidly transported and the Ca2+ ion is more rapidly complexed than other ions. However, colchicine, another alkaloid compound, extracted and transported only the divalent ions tested, Mg2+ and Ca2+. In both complexation and transport, the flux of the ions increases with the concentration of taxol or colchicine. Complexation and ionophoric properties of taxol and colchicine sheds new lights on therapeutic properties of these drugs. The treatment of disease states by the administration of these drugs to alter membrane permeability will prove to be a valuable therapeutic concept.
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Affiliation(s)
- M Blaghen
- Unité de Bio-industrie et Toxicologie Moléculaire, Département de Biologie, Université Hassan II, Faculté des Sciences Aïn-Chock, Casablanca, Maroc.
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Blaghen M, Bouhallaoui A, Taleb H, Idrissi H, Tagmouti F, Talbi M, Fellat-Zarrouck K. Okadaic acid and its interaction with sodium, potassium, magnesium and calcium ions: complex formation and transport across a liquid membrane. Toxicon 1997; 35:843-7. [PMID: 9241779 DOI: 10.1016/s0041-0101(96)00199-7] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.1] [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: 02/04/2023]
Abstract
Okadaic acid, a macrocyclic polyether compound, was shown to mediate the transfer of Na+, K+, Mg2+ and Ca2+ ions from aqueous solution to an organic phase, with a preference for Na+ ions. A kinetic study of the transport of these ions across a liquid membrane showed that the Na+ ion was more rapidly transported than the other ions and that the Na+ ion flux was dependent on the okadaic acid concentration.
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Affiliation(s)
- M Blaghen
- Département de Biologie, Université Hassan II Aïn-Chock, Faculté des Sciences, Casablanca, Morocco
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Abstract
A mercuric ion-reducing flavoprotein was purified from Yersinia enterocolitica 138A14 using dye matrix affinity chromatography. The purified enzyme had a characteristic absorption spectrum similar to those of flavin compounds, and FAD was detected as a part of the purified enzyme by thin-layer chromatography. Freshly purified preparations of the enzyme showed a single band on SDS polyacrylamide gel electrophoresis with a molecular weight of 70,000. The isolated enzyme had a molecular weight of about 200,000 as determined by gel filtration and disc gel electrophoresis. These results suggest an apparently trimeric structure of the enzyme. Dithiothreitol treatment disrupted the trimer into a dimeric structure of 140,000. Along with ageing, as well as limited proteolytic digestion, the enzyme evolved to give a dimeric molecule of 105,000 composed of two identical subunits of 52,000. The combination of the purified enzyme with HgCl2, or unexpectedly with merthiolate, oxidised the NADPH, which was followed spectrophotometrically. The Km for HgCl2 was dependent on the concentration of exogenous thiol compounds. A comparison of physical properties as well as kinetic characteristics indicated that the enzyme from Y. enterocolitica 138A14 is similar to mercuric reductases isolated from other mercury-resistant bacteria.
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Affiliation(s)
- M Blaghen
- Université Louis Pasteur, Faculté de Pharmacie, Illkirch, France
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Abstract
The mercuric reductase from Yersinia enterocolitica 138A14 was inactivated by the arginine modifying reagents 2,3-butanedione and phenylglyoxal. The inactivation by 2,3-butanedione exhibited second order kinetics with rate constant of 32 min-1 M-1. In the case of phenylglyoxal, biphasic kinetics were observed. The oxidized coenzyme (NADP+) prevented inactivation of the enzyme by the alpha-dicarbonyl reagents, whereas the reduced coenzyme (NADPH) enhanced the inactivation rate. The loss of enzyme activity was related to the incorporation of [2-14C] phenylglyoxal; when two arginines per subunit were modified the enzyme was completely inactivated.
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Affiliation(s)
- M Blaghen
- Laboratoire de Biochimie, Faculté des Sciences I Université Hassan II, Casablanca, Morocco
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