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El Megdar S, Fayzi L, Elkheloui R, Laktib A, Bourouache M, El Boulani A, Abou Oualid H, Cherifi K, Msanda F, Hassi M, Mimouni R, Hamadi F. Biological Synthesis of Silver Nanoparticles from Lavandula mairei Humbert: Antibacterial and Antioxidant Activities. Curr Microbiol 2024; 81:151. [PMID: 38647541 DOI: 10.1007/s00284-024-03670-4] [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] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/27/2023] [Accepted: 03/18/2024] [Indexed: 04/25/2024]
Abstract
Hospital-acquired infections involving carbapenem-resistant Acinetobacter baumannii (A. baumannii) and extended spectrum beta-lactamase (ESBL)-producing Enterobacteriaceae pose significant challenges in the intensive care units. The lack of novel antimicrobial drugs amplifies the urgency to explore innovative management strategies. Nanotechnology, with its ability to generate nanoparticles possessing specific properties beneficial in drug delivery and nanomedicine, stands as a pivotal research domain. The objective of this study was to synthesize, for the first time, biologically silver nanoparticles (Ag-NPs) from Lavandula mairei Humbert (L. mairei) plant. The biosynthesized Ag-NPs were characterized by UV-visible spectral analysis, X-Ray diffraction Analysis, Fourier transform infrared spectroscopy analysis, scanning electron microscopy (SEM), and energy-dispersive X-ray spectroscopy. Subsequently, the antibacterial and antioxidant activities of Ag-NPs were assessed using the micro-dilution method, DPPH test and FRAP assay, respectively. The green-synthesized Ag-NPs exhibited high antibacterial activity against ESBL-producing multidrug-resistant (MDR) strains and against carbapenem-resistant and non-carbapenem-resistant strains of A. baumannii, as well as a very interesting antioxidant activity. The present study suggests that these results hold very promising for the potential application of biologically synthesized Ag-NPs from L. mairei (Ag-LM-NPs) in the invention of novel antibacterial and antioxidant agents.
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Affiliation(s)
- Soufiane El Megdar
- Laboratory of Microbial Biotechnology and Plants Protection. Biology, Department. Sciences Faculty, Ibn Zohr University, Agadir, Morocco
| | - Lahbib Fayzi
- Laboratory of Biotechnologies and Valorization of Natural Resources, Biology Department. Sciences Faculty, Ibn Zohr University, Agadir, Morocco
| | - Raja Elkheloui
- Laboratory of Microbial Biotechnology and Plants Protection. Biology, Department. Sciences Faculty, Ibn Zohr University, Agadir, Morocco
| | - Asma Laktib
- Laboratory of Microbial Biotechnology and Plants Protection. Biology, Department. Sciences Faculty, Ibn Zohr University, Agadir, Morocco
| | - Mohamed Bourouache
- Laboratory of Microbial Biotechnology and Plants Protection. Biology, Department. Sciences Faculty, Ibn Zohr University, Agadir, Morocco
| | - Abdellah El Boulani
- Laboratory of Microbial Biotechnology and Plants Protection. Biology, Department. Sciences Faculty, Ibn Zohr University, Agadir, Morocco
| | - Hicham Abou Oualid
- Green Energy Park, Institut de Recherche en Energie Solaire Et Energies Nouvelles (IRESEN), Benguerir, Morocco
| | - Khalil Cherifi
- Laboratory of Biotechnologies and Valorization of Natural Resources, Biology Department. Sciences Faculty, Ibn Zohr University, Agadir, Morocco
| | - Fouad Msanda
- Laboratory of Biotechnologies and Valorization of Natural Resources, Biology Department. Sciences Faculty, Ibn Zohr University, Agadir, Morocco
| | - Mohamed Hassi
- Laboratory of Microbial Biotechnology and Plants Protection. Biology, Department. Sciences Faculty, Ibn Zohr University, Agadir, Morocco
| | - Rachida Mimouni
- Laboratory of Microbial Biotechnology and Plants Protection. Biology, Department. Sciences Faculty, Ibn Zohr University, Agadir, Morocco
| | - Fatima Hamadi
- Laboratory of Microbial Biotechnology and Plants Protection. Biology, Department. Sciences Faculty, Ibn Zohr University, Agadir, Morocco.
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Zanzan M, Ezzaky Y, Achemchem F, Hamadi F, Valero A, Mamouni R. Fermentative optimization and characterization of exopolysaccharides from Enterococcus faecium F58 isolated from traditional fresh goat cheese. Food Sci Biotechnol 2024; 33:1195-1205. [PMID: 38440680 PMCID: PMC10909037 DOI: 10.1007/s10068-023-01424-9] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/19/2023] [Revised: 08/06/2023] [Accepted: 08/23/2023] [Indexed: 03/06/2024] Open
Abstract
This study focused on optimizing the fermentation-based production of Exopolysaccharides (EPS) from Enterococcus faecium F58 initially isolated from traditional Moroccan Jben, a fresh goat cheese. Using the central composite design, yeast extract, MnSO4, and time affect EPS concentration. The highest experimental and predicted EPS production yields were 2.46 g/L ± 0.38 and 2.86 g/L, respectively. Optimal concentrations of yeast extract (4.46 g/L) and MnSO4 (0.011 g/L) were identified after 26 h at 30 °C. Characterization of EPS was conducted using SEM with EDX, XRD, and FTIR analyses. These tests revealed a specific morphology and an amorphous structure. Additionally, thermogravimetric analysis indicated adequate EPS stability up to 200 °C with anti-adhesion properties against different pathogens. This study offers valuable insights into the optimized production of EPS from Enterococcus faecium F58, which exhibits significant structural and functional properties for various applications in the food and biotechnology industries. Supplementary Information The online version contains supplementary material available at 10.1007/s10068-023-01424-9.
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Affiliation(s)
- Mariem Zanzan
- LASIME Research Laboratory, Bioprocess and Environment Team, Agadir Superior School of Technology, Ibn Zohr University, BP 33/S, 80150 Agadir, Morocco
- Laboratory of Microbial Biotechnology and Vegetal Protection, Faculty of Sciences, University Ibn Zohr, BP 32/S, 80000 Agadir, Morocco
| | - Youssef Ezzaky
- LASIME Research Laboratory, Bioprocess and Environment Team, Agadir Superior School of Technology, Ibn Zohr University, BP 33/S, 80150 Agadir, Morocco
| | - Fouad Achemchem
- LASIME Research Laboratory, Bioprocess and Environment Team, Agadir Superior School of Technology, Ibn Zohr University, BP 33/S, 80150 Agadir, Morocco
| | - Fatima Hamadi
- Laboratory of Microbial Biotechnology and Vegetal Protection, Faculty of Sciences, University Ibn Zohr, BP 32/S, 80000 Agadir, Morocco
| | - Antonio Valero
- Department of Food Science and Technology, UIC Zoonosis y Enfermedades Emergentes (ENZOEM), CeiA3, Universidad de Córdoba, Campus Rabanales, 14014 Córdoba, Spain
| | - Rachid Mamouni
- Biotechnology, Materials & Environment Team, Faculty of Sciences, University Ibn Zohr, BP 32/S, 80000 Agadir, Morocco
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Zanzan M, Ezzaky Y, Hamadi F, Achemchem F. Enterococcus mundtii A2 biofilm and its anti-adherence potential against pathogenic microorganisms on stainless steel 316L. Braz J Microbiol 2024:10.1007/s42770-024-01266-5. [PMID: 38319530 DOI: 10.1007/s42770-024-01266-5] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/13/2023] [Accepted: 01/30/2024] [Indexed: 02/07/2024] Open
Abstract
Pathogenic bacterial biofilms present significant challenges, particularly in food safety and material deterioration. Therefore, using Enterococcus mundtii A2, known for its antagonistic activity against pathogen adhesion, could serve as a novel strategy to reduce pathogenic colonization within the food sector. This study aimed to investigate the biofilm-forming ability of E. mundtii A2, isolated from camel milk, on two widely used stainless steels within the agri-food domain and to assess its anti-adhesive properties against various pathogens, especially on stainless steel 316L. Additionally, investigations into auto-aggregation and co-aggregation were also conducted. Plate count methodologies revealed increased biofilm formation by E. mundtii A2 on 316L, followed by 304L. Scanning electron microscopy (SEM) analysis revealed a dense yet thin biofilm layer, playing a critical role in reducing the adhesion of L. monocytogenes CECT 4032 and Staphylococcus aureus CECT 976, with a significant reduction of ≈ 2 Log CFU/cm2. However, Gram-negative strains, P. aeruginosa ATCC 27853 and E. coli ATCC 25922, exhibit modest adhesion reduction (~ 0.7 Log CFU/cm2). The findings demonstrate the potential of applying E. mundtii A2 biofilms as an effective strategy to reduce the adhesion and propagation of potentially pathogenic bacterial species on stainless steel 316L.
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Affiliation(s)
- Mariem Zanzan
- Bioprocess and Environment Team, LASIME Research Laboratory, Agadir Superior School of Technology, Ibn Zohr University, 33/S, 80150, Agadir, BP, Morocco
- Laboratory of Microbial Biotechnology and Vegetal Protection, Faculty of Sciences, Ibn Zohr University, Agadir, Morocco
| | - Youssef Ezzaky
- Bioprocess and Environment Team, LASIME Research Laboratory, Agadir Superior School of Technology, Ibn Zohr University, 33/S, 80150, Agadir, BP, Morocco
| | - Fatima Hamadi
- Laboratory of Microbial Biotechnology and Vegetal Protection, Faculty of Sciences, Ibn Zohr University, Agadir, Morocco
| | - Fouad Achemchem
- Bioprocess and Environment Team, LASIME Research Laboratory, Agadir Superior School of Technology, Ibn Zohr University, 33/S, 80150, Agadir, BP, Morocco.
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Zanzan M, Achemchem F, Hamadi F, Latrache H, Elmoslih A, Mimouni R. Anti-adherence Activity of Monomicrobial and Polymicrobial Food-Derived Enterococcus spp. Biofilms Against Pathogenic Bacteria. Curr Microbiol 2023; 80:216. [PMID: 37198525 DOI: 10.1007/s00284-023-03326-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/21/2022] [Accepted: 05/09/2023] [Indexed: 05/19/2023]
Abstract
Enterococcus species are commensal organisms of the gastrointestinal tract and can also be isolated from traditional food products. They are used as probiotics in animals and less often in humans. This study aimed to investigate the antibacterial and anti-adhesive activities of twelve food-origin Enterococcus spp. biofilms on stainless steel AISI 316 L against foodborne pathogens, including Listeria monocytogenes CECT4032, Pseudomonas aeruginosa ATCC27853, and Escherichia coli ATCC25922. The antimicrobial and co-aggregation abilities of Enterococcus spp. were evaluated using spots-agar test and spectrophotometry aggregation assay, respectively. The anti-adhesive activity of selected strains on pathogenic bacteria was tested using serial dilution technique. Enterococci strains in planktonic mode showed strong inhibition activity against different pathogens tested with a significant difference in co-aggregation capacity. Moreover, L. monocytogenes and E. coli presented a low auto-aggregation rate compared to P. aeruginosa, which showed an amount of 11.25%. Scanning electron microscopy (SEM) revealed that biofilm biomass of Enterococcus spp. increased after 10 days. The thick layer of enterococci biofilms on AISI 316 L caused a low adhesion of L. monocytogenes, resulting in a reduction of approximately 2.8 log CFU/cm² for some selected strains. Additionally, Enterococcus monocultures' biofilms were more efficient than polymicrobial cultures (a cocktail of enterococci strains) in controlling pathogen adhesion. These results indicate that monocultures of Enterococcus spp. biofilms could be used to prevent the adhesion of pathogenic bacteria on AISI 316 L.
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Affiliation(s)
- Mariem Zanzan
- Bioprocess and Environment Group, LASIME Laboratory, Agadir Superior School of Technology, Ibn Zohr University, Agadir, Morocco
- Laboratory of Microbial Biotechnology and Vegetal Protection, Faculty of Sciences, Ibn Zohr University, Agadir, Morocco
| | - Fouad Achemchem
- Bioprocess and Environment Group, LASIME Laboratory, Agadir Superior School of Technology, Ibn Zohr University, Agadir, Morocco.
| | - Fatima Hamadi
- Laboratory of Microbial Biotechnology and Vegetal Protection, Faculty of Sciences, Ibn Zohr University, Agadir, Morocco
| | - Hassan Latrache
- Laboratory of Bioprocess and Biointerfaces, Faculty of Sciences and Technics, Sultan Moulay Slimane University, Beni Mellal, Morocco
| | - Abdelkhaleq Elmoslih
- Bioprocess and Environment Group, LASIME Laboratory, Agadir Superior School of Technology, Ibn Zohr University, Agadir, Morocco
| | - Rachida Mimouni
- Laboratory of Microbial Biotechnology and Vegetal Protection, Faculty of Sciences, Ibn Zohr University, Agadir, Morocco
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El Kheloui R, Laktib A, Elmegdar S, Fayzi L, Zanane C, Msanda F, Cherifi K, Latrache H, Mimouni R, Hamadi F. Anti-adhesion and antibiofilm activities of Lavandula mairei humbert essential oil against Acinetobacter baumannii isolated from hospital intensive care units. Biofouling 2022; 38:953-964. [PMID: 36537173 DOI: 10.1080/08927014.2022.2149326] [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] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/06/2022] [Revised: 11/01/2022] [Accepted: 11/12/2022] [Indexed: 06/17/2023]
Abstract
This study aimed to assess, for the first time, the anti-adhesion and antibiofilm effects of Lavandula mairei Humbert essential oil against multidrug resistant Acinetobacter baumannii. Scanning electron microscope was used for visualizing its antibiofilm activity and the effect of this oil on surface physicochemical parameters was examined as a possible anti-adhesive target. Chemical analysis of Lavandulaa mairei essential oil showed a high content of carvacrol composition (79.12%). The oil tested exhibited antibacterial efficacy with inhibition diameters of 33 to 37.33 mm and minimum inhibitory and bactericidal concentrations of 1.56 µl ml-1. The oil inhibited adhesion by 83.66%, detach 73.30% of adherent cells and eliminated 64.02% of the biofilm compared to the untreated control. Lavandula mairei essential oil has proven its possible application as a preventive strategy by intervening in the initial adhesion of Acinetobacter baumannii to polystyrene.
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Affiliation(s)
- Raja El Kheloui
- Laboratory of Microbial Biotechnology and Plants Protection, Faculty of Sciences, Ibn Zohr University, Agadir, Morocco
| | - Asma Laktib
- Laboratory of Microbial Biotechnology and Plants Protection, Faculty of Sciences, Ibn Zohr University, Agadir, Morocco
| | - Soufiane Elmegdar
- Laboratory of Microbial Biotechnology and Plants Protection, Faculty of Sciences, Ibn Zohr University, Agadir, Morocco
| | - Lahbib Fayzi
- Laboratory of Biotechnologies and Valorization of Natural Resources, Faculty of Sciences, Ibn Zohr University, Agadir, Morocco
| | - Chorouk Zanane
- Laboratory of Bioprocess and Bio-interfaces, Faculty of Sciences and Techniques, Sultan Moulay Slimane University, Beni Mellal, Morocco
| | - Fouad Msanda
- Laboratory of Biotechnologies and Valorization of Natural Resources, Faculty of Sciences, Ibn Zohr University, Agadir, Morocco
| | - Khalil Cherifi
- Laboratory of Biotechnologies and Valorization of Natural Resources, Faculty of Sciences, Ibn Zohr University, Agadir, Morocco
| | - Hassan Latrache
- Laboratory of Bioprocess and Bio-interfaces, Faculty of Sciences and Techniques, Sultan Moulay Slimane University, Beni Mellal, Morocco
| | - Rachida Mimouni
- Laboratory of Microbial Biotechnology and Plants Protection, Faculty of Sciences, Ibn Zohr University, Agadir, Morocco
| | - Fatima Hamadi
- Laboratory of Microbial Biotechnology and Plants Protection, Faculty of Sciences, Ibn Zohr University, Agadir, Morocco
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Ben-Haddad M, Abelouah MR, Hajji S, Rangel-Buitrago N, Hamadi F, Alla AA. Microplastics pollution in sediments of Moroccan urban beaches: The Taghazout coast as a case study. Mar Pollut Bull 2022; 180:113765. [PMID: 35635881 DOI: 10.1016/j.marpolbul.2022.113765] [Citation(s) in RCA: 15] [Impact Index Per Article: 7.5] [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: 03/30/2022] [Revised: 05/07/2022] [Accepted: 05/14/2022] [Indexed: 05/26/2023]
Abstract
This work describes the spatiotemporal analysis of microplastics (MPs) pollution in sediments collected on a high urbanized beach located in Taghazout coast, central Atlantic part of Morocco. The study area is mainly composed of moderately well-sorted fine sands with an average density of MPs that ranged between 915 MPs/kg in 2018 and 1448 MPs/kg in 2019. The most polluted sites were in the south part of Taghazout coast, close to facilities of where beachgoers are often found. Microplastic Pollution Index (MPPI), Microplastic Impact Coefficient (CMPI), Agglomerative Hierarchical Clustering (AHC), and Multidimensional Scaling (MDS) revealed spatiotemporal variation of MPs pollution. Thus, the principal component analysis (PCA) showed a low correlation between the sediment characteristics (i.e., grain size, sorting, skewness) and MPs densities. Overall, the outputs of this baseline recommend implementing plastic management strategies to eliminate or at least minimize the collateral effects generated by MPs pollution in sediments of urbanized beaches.
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Affiliation(s)
- Mohamed Ben-Haddad
- Laboratory of Aquatic Systems: Marine and Continental Environments, Faculty of Sciences, Ibn Zohr University, Agadir, Morocco.
| | - Mohamed Rida Abelouah
- Laboratory of Aquatic Systems: Marine and Continental Environments, Faculty of Sciences, Ibn Zohr University, Agadir, Morocco
| | - Sara Hajji
- Laboratory of Aquatic Systems: Marine and Continental Environments, Faculty of Sciences, Ibn Zohr University, Agadir, Morocco
| | - Nelson Rangel-Buitrago
- Programa de Física, Facultad de Ciencias Básicas, Universidad del Atlántico, Barranquilla, Atlántico, Colombia; Programa de Biologia, Facultad de Ciencias Básicas, Universidad del Atlántico, Barranquilla, Atlántico, Colombia
| | - Fatima Hamadi
- Laboratory of Microbial Biotechnology and Plant Protection, Faculty of Sciences, Ibn Zohr University, Agadir, Morocco
| | - Aicha Ait Alla
- Laboratory of Aquatic Systems: Marine and Continental Environments, Faculty of Sciences, Ibn Zohr University, Agadir, Morocco
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Laktib A, Nayme K, Hamdaoui AE, Timinouni M, Hassi M, Aitalla A, Msanda F, Bourouache M, Yaagoubi ME, Mimoun R, Bihadassen B, Hamadi F. Antibacterial activity of Lavandula mairei Humbert essential oil against carbapenem- resistant Acinetobacter baumannii. mjima 2022. [DOI: 10.4274/mjima.galenos.2021.2021.3] [Citation(s) in RCA: 1] [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: 12/01/2022]
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Bourouache M, Mimouni R, Ait Alla A, Hamadi F, El Boulani A, Bihadassen B, Laktib A, Moustaoui F, Aghrouch M. Occurrence and removal of intestinal parasites in two wastewater treatment plants in the south of Morocco. J Environ Health Sci Eng 2021; 19:1425-1434. [PMID: 34900277 PMCID: PMC8617139 DOI: 10.1007/s40201-021-00697-8] [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: 12/31/2019] [Accepted: 06/21/2021] [Indexed: 06/14/2023]
Abstract
BACKGROUND Agadir city plans to reuse treated wastewater on a large scale to irrigate these green spaces. This study aims to evaluate the risk of intestinal parasites, to which human and animal populations are exposed during the reuse of treated wastewaters. METHODS Over 21 months, wastewater samples were collected in Bensergao and Mzar wastewater treatment plants, in Agadir city, southern Morocco. The occurrences and removal of intestinal parasites were inspected using the modified Bailenger method. RESULTS The biodiversity of helminths is higher than protozoa, while the protozoa cysts are more abundant and more prevalent. Generally, the highest parasitic loads were recorded during the hot season. For raw waters, the average concentration of protozoa cysts was 173.33 ± 70.81 cysts per L for Bensergao plant and 179.33 ± 129.22 cysts per L for Mzar plant. However, the helminths average concentration was 48.70 ± 39.91 eggs/larvae per L for Bensergao plant and 51.10 ± 31.76 eggs/larvae per L for Mzar plant. The purified water of the Mzar plant does not contain parasites, unlike the Bensergao plant where a small numbers of parasites were detected, included 2.33 ± 1.53 cysts per L for protozoa and 0.45 ± 0.58 eggs/larvae per L for helminths. CONCLUSIONS Considering parasitological risks, the purified waters of Bensergao plant cannot be used without risks to the public health and environment. In contrast, the purified waters and the purified waters disinfected by ultraviolet radiation from the Mzar plant can be used safely to water the green spaces of Agadir city.
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Affiliation(s)
- M. Bourouache
- Laboratory of Microbial Biotechnology and Plant Protection, Faculty of Sciences, Ibn Zohr University, Agadir, BP 8106, Morocco
| | - R. Mimouni
- Laboratory of Microbial Biotechnology and Plant Protection, Faculty of Sciences, Ibn Zohr University, Agadir, BP 8106, Morocco
| | - A. Ait Alla
- Laboratory of Microbial Biotechnology and Plant Protection, Faculty of Sciences, Ibn Zohr University, Agadir, BP 8106, Morocco
| | - F. Hamadi
- Laboratory of Microbial Biotechnology and Plant Protection, Faculty of Sciences, Ibn Zohr University, Agadir, BP 8106, Morocco
| | - A. El Boulani
- Laboratory of Microbial Biotechnology and Plant Protection, Faculty of Sciences, Ibn Zohr University, Agadir, BP 8106, Morocco
| | - B. Bihadassen
- Laboratory of Microbial Biotechnology and Plant Protection, Faculty of Sciences, Ibn Zohr University, Agadir, BP 8106, Morocco
| | - A. Laktib
- Laboratory of Microbial Biotechnology and Plant Protection, Faculty of Sciences, Ibn Zohr University, Agadir, BP 8106, Morocco
| | - F. Moustaoui
- Medical Analysis Laboratory, Hassan II Regional Hospital, Agadir, 80000 Morocco
| | - M. Aghrouch
- Medical Analysis Laboratory, Hassan II Regional Hospital, Agadir, 80000 Morocco
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Saidi A, Mimouni R, Hamadi F, Oubrou W. Coprological Survey of Protostrongylid Infections in Antelopes from Souss-Massa National Park (Morocco). Helminthologia 2020; 57:306-313. [PMID: 33364899 PMCID: PMC7734666 DOI: 10.2478/helm-2020-0045] [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] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/08/2020] [Accepted: 05/04/2020] [Indexed: 11/20/2022] Open
Abstract
Protostrongylids, small nematode lungworms, are an integral part of the wild ruminant helminth community, which can damage animals' health when they are held in captivity or semi-captive conditions. The Sahelo-Saharan antelope species dorcas gazelle (Gazella dorcas), the scimitar-horned oryx (Oryx dammah), and the addax (Addax nasomacculatus), reintroduced to Souss-Massa National Park in Morocco, could be host to many species of Protostrongylids. This study was conducted from January to July 2015 to identify infecting parasite species, and determine their prevalence and abundance in all three antelope species. A total of 180 individual fecal samples were collected, morphologically examined by the Baermann technique, and molecularly identified by PCR amplification and sequencing of the second internal transcribed spacer region of the rDNA (ITS-2). Two parasite species were found in the three antelope populations: Muellerius capillaris and Neostrongylus linearis. The prevalence scores recorded for M. capillaris were 98.40 % in the addax, 96.70 % in dorcas gazelle, and 28.40 % in the oryx. The prevalence rates of N. linearis were 60 % in the addax, 23.40 % in dorcas gazelle, and 90 % in the oryx. Excreted larvae were quantified by LPG (larvae per gram) counting: for M. capillaris, the LPG mean values were 92.94 in the addax, 133.09 in dorcas gazelle, and 1.48 in the oryx; and for N. linearis, the LPG mean values were 6.02 in the addax, 1.37 in dorcas gazelle, and 32.81 in the oryx. These findings indicate that the three species of antelopes are infected with Muellerius capillaris and Neostrongylus linearis to varying degrees in intensity and prevalence.
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Affiliation(s)
- A. Saidi
- Agadir Regional Laboratory of ONSSA, Agadir 80000, Morocco
- Department of Biology, College of Science, Ibn Zohr University, Agadir 80000, Morocco
| | - R. Mimouni
- Department of Biology, College of Science, Ibn Zohr University, Agadir 80000, Morocco
| | - F. Hamadi
- Department of Biology, College of Science, Ibn Zohr University, Agadir 80000, Morocco
| | - W. Oubrou
- Souss-Massa National Park, Agadir 80000, Morocco
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Saidi A, Mimouni R, Hamadi F, Oubrou W. Some larval morphological characteristics of Camelostrongylus mentulatus and Nematodirus spathiger. Ukr Jour of Vet and Agr Sci 2020. [DOI: 10.32718/ujvas3-2.02] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
Abstract
Monitoring of gastrointestinal nematode parasites in ruminants (domestic and wild) is often based on fecal examination techniques, looking for excreted eggs and larval forms using morphological keys. These, are more available in domestic ruminants, in which helminths are widely studied, than in wild ruminants. This study tried to provide certain morphological elements that will help to recognize the L3 larvae of Camelostrongylus mentulatus and Nematodirus spathiger that could parasite either domestic or wild ruminants. For that, we resorted first to the culture of L3 larvae from fecal samples taken from African antelopes, and second by the microscopic characterization of each isolated larval morphological pattern previously identified by sequencing of its internal transcribed spacer (ITS-2) regions of the ribosomal DNA. The results of different microscopic captured images showed that Camelostrongylus mentulatus larva is 16 intestinal cells that measuring approximately 820 µm length, ≈ 25 µm wide, and ≈ 47 µm for its sheath tail extension and by this be closer to Teladorsagia circumcincta characteristics. For Nematodirus spathiger, it possesses 8 gut cells and measuring about 1020 µm long, ≈ 25 µm wide, and ≈ 143 µm for its sheath tail extension with specific tail appendages. Have done this, we were able to get some clarifications on the morphology of the studied larvae, and we believe thus that this study will contribute to the establishment of morphological identification keys especially for parasitic nematodes of wild ruminants.
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Amzil K, Hamadi F, Mimouni R, Latrache H, Azelmad K, Najih Y, Mabrouki M. Evaluation of sodium hypochlorite efficiency on the elimination of Pseudomonas aeruginosa biofilm using two methods. Russ Open Med J 2019. [DOI: 10.15275/rusomj.2019.0302] [Citation(s) in RCA: 1] [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: 11/09/2022] Open
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Azelmad K, Hamadi F, Mimouni R, Latrache H, Amzil K, Boulani AE, Aitalla A, Elmousadik A. Identification and physicochemical characterization of bacterial surface isolated from catering services in health establishment. Russ Open Med J 2016. [DOI: 10.15275/rusomj.2016.0403] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022] Open
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Mannas H, Mimouni R, Chaouqy N, Hamadi F, Martinez-Urtaza J. Occurrence of Vibrio and Salmonella species in mussels (Mytilus galloprovincialis) collected along the Moroccan Atlantic coast. Springerplus 2014; 3:265. [PMID: 24936389 PMCID: PMC4057555 DOI: 10.1186/2193-1801-3-265] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/17/2014] [Accepted: 05/14/2014] [Indexed: 11/15/2022]
Abstract
This study reports the occurrence of different Vibrio and Salmonella species in 52 samples of Mytilus galloprovincialis collected from four sites along the Atlantic coast between Agadir and Essaouira (Anza, Cap Ghir, Imssouane and Essaouira). The level of Escherichia coli (E. coli) was also determined to evaluate the degree of microbial pollution in the investigated areas. In this study three methods were used : AFNOR NF EN ISO 6579 V08-013 for Salmonella spp., the provisional method routinely used by several laboratories (Institut Pasteur, Paris,…) for Vibrio cholerae and Vibrio parahaemolyticus in the seafood, and the most probable number method (MPN) using Norm ISO/TS 16649–3 (2005) for E. coli. The most frequently isolated Vibrios were Vibrio alginolyticus (90.4% of samples), followed by V. cholerae non O1 non O139 (15.4%) and V. parahaemolyticus (7.7%). Salmonella spp. was found in 15% of the samples. The number of E. coli ranged between 0.2/100 g and 1.8 103 /100 g of mussel soft tissues. This study indicates the potential sanitary risk associated with the presence of pathogenic bacteria in cultivated mussels in the two populous regions of southern Morocco, where shellfish production and maritime tourism are important to the local economy.
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Affiliation(s)
- Hasna Mannas
- Faculty of Sciences, Laboratory of Biotechnology & Valorisation of Natural Resources, University Ibn Zohr, Agadir, Morocco
| | - Rachida Mimouni
- Faculty of Sciences, Laboratory of Biotechnology & Valorisation of Natural Resources, University Ibn Zohr, Agadir, Morocco
| | - Noureddine Chaouqy
- Laboratory of Microbiology, National Health Security Food Office (ONSSA), Agadir, Morocco
| | - Fatima Hamadi
- Faculty of Sciences, Laboratory of Biotechnology & Valorisation of Natural Resources, University Ibn Zohr, Agadir, Morocco
| | - Jaime Martinez-Urtaza
- Reader in Infection and Immunology Department of Biology and Biochemistry, University of Bath, BA2 7AY Bath, United Kingdom
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Hamadi F, Asserne F, Elabed S, Bensouda S, Mabrouki M, Latrache H. Adhesion of Staphylococcus aureus on stainless steel treated with three types of milk. Food Control 2014. [DOI: 10.1016/j.foodcont.2013.10.006] [Citation(s) in RCA: 35] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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15
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Djeribi R, Boucherit Z, Bouchloukh W, Zouaoui W, Latrache H, Hamadi F, Menaa B. A study of pH effects on the bacterial surface physicochemical properties of Acinetobacter baumannii. Colloids Surf B Biointerfaces 2013; 102:540-5. [DOI: 10.1016/j.colsurfb.2012.08.047] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/07/2012] [Revised: 08/16/2012] [Accepted: 08/28/2012] [Indexed: 10/27/2022]
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16
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El Abed S, Ibnsouda SK, Latrache H, Meftah H, Tahri NJ, Hamadi F. Environmental Scanning Electron Microscopy characterization of the adhesion of conidia from Penicillium expansum to cedar wood substrata at different pH values. World J Microbiol Biotechnol 2012; 28:1707-13. [PMID: 22805953 DOI: 10.1007/s11274-011-0980-3] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/28/2011] [Accepted: 12/13/2011] [Indexed: 11/29/2022]
Abstract
Initial microbial adhesion to surfaces is a complicated process that is affected by a number of factors. An important property of a solution that may influence adhesion is pH. The surface properties of the cedar wood were characterized by the sessile drop technique. Moreover, the interfacial free energy of surface adhesion to the cedar wood was determined under pH values (2, 3, 5, 7, 9 and 11). The results showed that cedar wood examined at different pH levels could be considered hydrophobic ranged from Giwi = -13.1 mJ/m(2) to Giwi = -75 mJ/m(2). We noted that the electron-donor character of cedar wood was important at both basic and limit acidic conditions (pH 11 and pH 3) and it decreased at intermediate pH (pH 5). The cedar wood substratum presents a weak electron acceptor under various pH's. In addition, the adhesion of conidia from Penicilllium expansum to the cedar wood surfaces at different pH values (2, 3, 5, 7, 9 and 11) was investigated using Environmental Scanning Electron Microscopy and image analysis was assessed with the Mathlab(®) program. The data analysis showed that the conidia from P. expansum were strongly influenced by the pH. The maximum adhesion occurs in the pH 11 and pH 3 and decreased to 24% at pH 5.
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Affiliation(s)
- Soumya El Abed
- Equipe de recherche, Laboratoire de Biotechnologie Microbienne, Faculté des Sciences et Techniques de Fès- Saïs-Maroc, B.P. 2202, Route d'Imouzzer Fès, Maroc
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Hamadi F, Latrache H, Zahir H, Abed SE, Ellouali M, Saad IK. The Relation Between the Surface Chemical Composition of Escherichia coli and their Electron Donor/Electron Acceptor (Acid-base) Properties. ACTA ACUST UNITED AC 2012. [DOI: 10.3923/jm.2012.32.40] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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18
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Hamadi F, Latrache H, Zahir H, Bengourram J, Kouider N, Elghmari A, Habbari K. Evaluation of the relative cell surface charge by using microbial adhesion to hydrocarbon. Microbiology (Reading) 2011. [DOI: 10.1134/s0026261711040072] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
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Hamadi F, Latrache H, Zahir H, Bengourram J, Kouider N, Elghmari A, Habbari K. Evaluation of the relative cell surface charge by using microbial adhesion to hydrocarbon. Mikrobiologiia 2011; 80:482-485. [PMID: 22073548] [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: 05/31/2023]
Abstract
A simple and rapid method, Microbial adhesion to hexadecane, for estimating the cell surface charge is proposed. This method is based on the determination of cell affinity to hexadecane at low ionic strength and at high ionic strength. The difference between these two affinities can provide the relative cell surface charge. The application of this method for Staphylococcus aureus and Escherichia coli show that the profile of surface charge evolution as a function ofpH was similar to these obtained by microelectrophoresis method.
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Affiliation(s)
- Fatima Hamadi
- Laboratoire de valorisation et sécurité des produits agroalimentaires, Faculté de Sciences et Techniques, Université Sultan Moulay Slimane, BP 523 Beni Mellal, Maroc
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20
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Hamadi F, Latrache H, Zekraoui M, Ellouali M, Bengourram J. Effect of pH on surface energy of glass and Teflon and theoretical prediction of Staphylococcus aureus adhesion. Materials Science and Engineering: C 2009. [DOI: 10.1016/j.msec.2008.10.023] [Citation(s) in RCA: 47] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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Hamadi F, Latrache H. Comparison of contact angle measurement and microbial adhesion to solvents for assaying electron donor-electron acceptor (acid-base) properties of bacterial surface. Colloids Surf B Biointerfaces 2008; 65:134-9. [PMID: 18467077 DOI: 10.1016/j.colsurfb.2008.03.010] [Citation(s) in RCA: 52] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2007] [Revised: 02/28/2008] [Accepted: 03/19/2008] [Indexed: 10/22/2022]
Abstract
The electron donor-electron acceptor (acid-base properties) of cell surfaces of a series of bacteria were determined by two methods, namely, Microbial Adhesion to Solvents (MATS) and Contact Angle Measurements (CAM) combined with equation of Van Oss. The efficiency of these two methods was then compared. Pseudomonas aeruginosa ATCC 27853, Bacillus subtilis ILP 142B, Staphylococcus aureus ATCC 25923 and four Escherichia coli strains including HB101, AL52, O128B12 and ATCC 25922, acid-base properties were examined under the two different conditions mentioned above. The results showed that the correlation between acid-base properties determined by MATS and CAM was very weak. We have also found that when the microbial cell surface was electron donor by CAM method, similar result was found by MATS, but the reverse was not always true. In contrast, a good correlation between the two methods was obtained when the four E. coli strains were examined.
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Affiliation(s)
- Fatima Hamadi
- Equipe de recherche: Microbiologie et biochimie appliquée à l'agroalimentaire, l'environnement et la santé, Faculté des Sciences et Techniques, Université Sultan Moulay Slimane B.P 523, Beni Mellal, Morocco
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Hamadi F, Latrache H, Zahir H, Elghmari A, Timinouni M, Ellouali M. The relation between Escherichia coli surface functional groups' composition and their physicochemical properties. Braz J Microbiol 2008; 39:10-5. [PMID: 24031168 PMCID: PMC3768355 DOI: 10.1590/s1517-83822008000100003] [Citation(s) in RCA: 59] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/07/2007] [Revised: 07/02/2007] [Accepted: 01/18/2008] [Indexed: 11/30/2022] Open
Abstract
Escherichia coli surface characteristics including hydrophobicity, electrophoretic mobility and surface functional groups’ composition were investigated. These characteristics were determined respectively by water contact angle measurements, microelectrophoresis and x-ray photoelectron spectroscopy (XPS). The relation between the physicochemical properties and functional groups’ composition was also examined. The electrophoretic mobility at pH 7 appeared to be governed on the cell surface by the (O=C) functional groups. The cell surface’s hydrophilicity was associated with high levels of (C-(O.N)) and (OH- (C-O-C)) functional groups, whereas the cell surface’s hydrophobicity was associated with (C-(C,H)) functional groups.
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Affiliation(s)
- Fatima Hamadi
- Equipe de recherche: Microbiologie et biochimie appliquée á L'agroalimentaire, L'environmental et la Santé, FST , Beni Mellal , Marocco
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23
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Mliji EM, Hamadi F, Latrache H, Cohen N, El Ghmari A, Timinouni M. Association between plasmid carrying an expanded-spectrum cephalosporin resistance and biofilm formation in Escherichia coli. New Microbiol 2007; 30:19-27. [PMID: 17319596] [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: 05/14/2023]
Abstract
The formation of biofilm is a universal bacterial survival strategy. Biofilms occur on inert and living support in the natural environment and in industrial installations. This microenvironment leads to the horizontal transfer of genetic material between bacteria by physical contact. In order to evaluate the relationship between biofilm-forming capabilities, surface characteristics and plasmid content we purified from Salmonella a plasmid conferring resistance to cephalosporin and transferred it by electroporation to E.coli DH10B originally unable to form biofilm in inert surface. We demonstrated the association between a plasmid conferring resistance to expanded-spectrum cephalosporin and biofilm formation. We also noted that this plasmid influences the cell surface properties and cell motility.
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Affiliation(s)
- El Mostafa Mliji
- Laboratoire de la Microbiologie des Aliments et des Eaux, Institut Pasteur du Maroc-Casablanca, Maroc
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Abstract
The aim of our work is to study dimethoate effects on thyroid function given in drinking water (40 mg/kg body weight, equivalent to 0.2 g/L) to mothers from day zero until the 10th day after delivery. Pups and their mothers were sacrificed on day ten after parturition. Compared to a control group, dimethoate-treated pups showed a 48% decrease in body weight which could be attributed to a defect in thyroid hormones. Indeed, after treatment by dimethoate, plasma rates of free T4 and T3 decreased by 56% and 40% in the young and by 27% and 15% in dams respectively. We can attribute the reduction in plasma thyroxine and triiodothyronine rates to a decrease in thyroid iodine levels (-75%) in the young and (-24%) in their mothers. The decrease in production of thyroid hormones after dimethoate treatment affect thyroid stimulating hormone (TSH) levels. In fact, plasma TSH levels were multiplied in dimethoate-treated group by factors of 2.31 in dams and 1.96 in their offspring. These biochemical modifications confirmed the histological thyroid aspects of pups and dams. In fact, in dimethoate-treated rats, some thyroid follicles of pups presented vesicular cavities without colloid; others contained colloid. However in dams, thyroid follicles presented cubical epithelial cells which surrounded empty vesicular cavities.
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Affiliation(s)
- A Mahjoubi-Samet
- Animal Physiology Laboratory, Life Sciences department, Sciences Faculty of Sfax, Route de la Soukra Km 3.5. BP 802. 3018 Sfax-Tunisie
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El Ghmari A, Latrache H, Hamadi F, El Louali M, El Bouadili A, Hakkou A, Bourlioux P. Influence of surface cell structures on physicochemical properties of Escherichia coli. New Microbiol 2002; 25:173-8. [PMID: 12019723] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/25/2023]
Abstract
The partition of cells in a polyethylene glycol-dextran two phase system was used to compare the relative hydrophobicity of E. coli strains expressing different surface structures. The role of fimbriae and surface antigens on the behavior partition was investigated. The strains expressing PAP fimbriae and/or O-antigen showed a higher surface hydrophobicity than strains which express only type 1 fimbriae and/or R-antigen. No relation was found between K and H antigen and hydrophobicity measurements. The influence of surface structures on electrophoretic mobility has been evaluated. The polysaccharide capsules of AL 213 and AL 499 strains generated a high EPM. For non capsulated E. coli the EPM of rough strains (AL 46, 382) is higher than smooth strain (AL52).
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Affiliation(s)
- A El Ghmari
- UFR de Chimie Appliquée et Sciences de l'Environnement, Laboratoire de Géosciences de l'Environnement, Faculté des Sciences et Techniques, Beni mellal, Maroc
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