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Belahmadi MSO, Abdessemed A. Enhancement of benzo[a]pyrene mineralization: symbiotic biodegradation by Acinetobacter sp. strain HAP1 in Association with Cyanobacteriota sp. S66. J Environ Sci Health B 2024; 59:248-262. [PMID: 38605578 DOI: 10.1080/03601234.2024.2336554] [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: 12/24/2023] [Accepted: 03/19/2024] [Indexed: 04/13/2024]
Abstract
The ability of Acinetobacter sp. strain HAP1, isolated from petroleum refinery effluent, to eliminate different concentrations (20, 40, 60, 80 and 100 mg/L) of Benzo[a]Pyrene degradation (BaP) was studied. A test to improve this degradation capacity was carried out by culturing the bacterial strain in association with a cyanobacteria. The results show a highly significant effect of the concentration of (BaP) and a very highly significant effect of the symbiosis between the bacterial strain and the cyanobacteria. This combination was able to significantly improve the (BaP) degradation rate by up to 18%. This degradation and especially in association leads to a complete mineralization of (BaP) and there is a difference in yield that can go up to 15%. Through molecular identification based on 16S rRNA gene sequence analysis, strains HAP1 and S66 were recognized as Acinetobacter sp. strain HAP1 and Cyanobacteriota sp. S66, respectively. Comparison of the retrieved sequences with the NCBI GenBank database was done, and the closest matches were found to be Acinetobacter pittii strain JD-10 for bacteria and Pseudochroococcus couteii strain PMC 885.14 for cyanobacteria.
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Affiliation(s)
| | - Ala Abdessemed
- Biotechnology and Environment, Biotechnology Research Center, Constantine, Algeria
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Belahmadi MSO, Charchar N, Abdessemed A, Gherib A. Impact of petroleum refinery on aquatic ecosystem of Skikda Bay (Algeria): Diversity and abundance of viable bacterial strains. Mar Pollut Bull 2023; 188:114704. [PMID: 36860027 DOI: 10.1016/j.marpolbul.2023.114704] [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: 11/14/2022] [Revised: 01/30/2023] [Accepted: 02/01/2023] [Indexed: 06/18/2023]
Abstract
This paper reports a study on the impact of petroleum refinery effluents on the bacterial load and diversity of the aquatic ecosystem in Skikda Bay (Algeria). The results showed a large spatiotemporal variation in the isolated bacterial species. This difference between stations and seasons could be attributed to environmental factors and to the pollution rate at the different sampling sites. Statistical analysis results showed that physicochemical parameters such as pH, electrical conductivity and salinity have a very significant effect on the microbial load (p < 0.001), while hydrocarbon pollution has a significant effect on the diversity of bacterial species (p < 0.05). In total 75 bacteria were isolated from six sampling sites during the four seasons. A significant spatiotemporal richness and diversity was observed in water samples. A total of 42 strains belonging to 18 bacterial genera were identified. Most of these genera belong to the class of Proteobacteria.
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Affiliation(s)
| | - Nabil Charchar
- Biotechnology Research Centre, BPE 73, Ali Mendjeli, Nouvelle Ville, 25000 Constantine, Algeria
| | - Ala Abdessemed
- Biotechnology Research Centre, BPE 73, Ali Mendjeli, Nouvelle Ville, 25000 Constantine, Algeria
| | - Abdelfettah Gherib
- Biotechnology Research Centre, BPE 73, Ali Mendjeli, Nouvelle Ville, 25000 Constantine, Algeria
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Abdessemed A, Khaldoun N, Tahiat A, Djidjik R, Mellal Y, Allam I, Slimani S, Haddouche A, Brahimi N, Ghaffor M, Rezig AL. Erosive arthritis and anti-cyclic citrullinated peptide antibodies in systemic sclerosis. Indian J Rheumatol 2017. [DOI: 10.4103/injr.injr_46_16] [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: 11/04/2022] Open
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Louahchi S, Allam I, Raaf N, Berkani L, Boucharef A, Abdessemed A, Khaldoun N, Bahaz N, Ladjouze-Rezig A, Nebbab A, Ghaffor M, Djidjik R. Association of rs6822844 within the KIAA1109/TENR/IL2/IL21 locus with rheumatoid arthritis in the Algerian population. HLA 2016; 87:160-4. [PMID: 26917059 DOI: 10.1111/tan.12757] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [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: 11/25/2015] [Revised: 01/25/2016] [Accepted: 01/31/2016] [Indexed: 11/26/2022]
Abstract
Increasing evidence suggests that the rs6822844, within KIAA1109/TENR/IL2/IL21 gene cluster on 4q27, is strongly associated with rheumatoid arthritis (RA) in the Caucasian population. The aim of this study is to investigate the possible association between the SNP rs6822844 and susceptibility to RA in the Algerian Maghreb population, and to explore the association with the clinical and immunological features of RA. The polymorphism rs6822844 was genotyped in 323 RA patients and 323 healthy individuals using the TaqMan assay. A strong association of IL2/IL21 with RA susceptibility was detected in the Algerian population [odds ratio (OR) = 2.57 (95% confidence interval (CI) 1.74-3.83), P = 10(-4) ]. Our results revealed that IL2/IL21 predisposed to disease development in both autoantibody positive and negative disease. Meanwhile, the association was stronger in RA patients with anti-cyclic citrullinated peptides (ACPA) positive than those with ACPA negative [OR = 2.30 (95% CI 1.53-3.51), P = 10(-4) and OR = 1.98 (95% CI 1.01-4.22), P = 0.037, respectively]. Moreover, our findings showed a moderate association of the rs6822844 polymorphism with disease activity (P = 0.014). This study indicates for the first time that there is a strong association between IL2/IL21 rs6822844 variant and susceptibility to RA in the Algerian population, and that this association was independent from the autoantibodies status of RA patients.
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Affiliation(s)
- S Louahchi
- Immunology Department, Beni Messous Teaching Hospital, Algiers, Algeria.,Laboratory of Cellular and Molecular Biology, Cytokine and NO Synthase Team, USTHB, Algiers, Algeria
| | - I Allam
- Immunology Department, Beni Messous Teaching Hospital, Algiers, Algeria
| | - N Raaf
- Biology Department, Beni Messous Teaching hospital, Algiers, Algeria
| | - L Berkani
- Immunology Department, Beni Messous Teaching Hospital, Algiers, Algeria
| | - A Boucharef
- Immunology Department, Beni Messous Teaching Hospital, Algiers, Algeria
| | - A Abdessemed
- Rheumatology Department, Ben Aknoun Specialized Center, Algiers, Algeria
| | - N Khaldoun
- Rheumatology Department, Ben Aknoun Specialized Center, Algiers, Algeria
| | - N Bahaz
- Rheumatology Department, Beni Messous Teaching Hospital, Algiers, Algeria
| | - A Ladjouze-Rezig
- Rheumatology Department, Ben Aknoun Specialized Center, Algiers, Algeria
| | - A Nebbab
- Epidemiology Department, Beni Messous Teaching Hospital, Algiers, Algeria
| | - M Ghaffor
- Laboratory of Immunology, Faculty of Medicine, Algiers 1 University, Algiers, Algeria
| | - R Djidjik
- Immunology Department, Beni Messous Teaching Hospital, Algiers, Algeria.,Laboratory of Immunology, Faculty of Medicine, Algiers 1 University, Algiers, Algeria
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Abdessemed A, Slimani S, Khaldoun N, Bougrina F, Ait Belabas N, Djoudi M, Lefkir S, Brahimi N, Ladjouze A. AB0674 The Erasmus Syndrome: Exposure to Silica and Systemic Sclerosis. Ann Rheum Dis 2015. [DOI: 10.1136/annrheumdis-2015-eular.4774] [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: 11/03/2022]
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Khaldoun N, Abdessemed A, Bougrina F, Chetouane R, Haid S, Rahal F, Mellas T, Megateli I, Azeli S, Lefkir S, Brahimi N, LadjouzeRezig A, Louahchi S. AB0598 Thyroiditis in Systemic Lupus Erythematosus: A Case-Control Study. Ann Rheum Dis 2015. [DOI: 10.1136/annrheumdis-2015-eular.5931] [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: 11/04/2022]
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Abdessemed A, Djebbar KE, El-Kalliny AS, Sehili T, Nugteren H, Appel PW. Water Treatment Combined Chlorine (Monochloramine) Degradation using Direct Photolysis and Homogeneous Photocatalysis (UV/H2O2, UV/NaOCl) with a Medium Pressure (MP) Lamp as a Source of UV. International Journal of Chemical Reactor Engineering 2014. [DOI: 10.1515/ijcre-2014-0013] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
Abstract
The objective of this study is to investigate the use of photochemical systems (photolysis, H2O2/UVMP and NaOCl/UVMP) to deplete monochloramine compound with a medium pressure lamp as an irradiation source (200–600 nm).
First, it was found that the direct photolysis treatment was a suitable method to degrade the given compound and that this degradation was greatly enhanced by H2O2/UVMP. This could be attributed to radical •OH produced in great amount by the photolysis of H2O2. However, no big advantages were observed when we used NaOCl/UVMP system. Indeed, this process generated radical •OH (but in feeble amount) and also radical Cl• (to form chloramins) and leading consequently to a less degradation rate comparatively to that obtained with H2O2/UVMP. This could be explained by a competition between the two species: •OH and Cl• for the compound. In addition, kinetics data for the three systems were best represented by a pseudo-first-order model and the photodecomposition of NH2Cl has led to the formation of nitrite, nitrate without forming ammonia.
It is essential to mention that •OH radicals produced from H2O2/UVMP and NaOCl/UVMP was detected by a photoluminescence (PL) technic using terephthalic acid (TA) as a probe molecule.
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Affiliation(s)
| | - Kamel E. Djebbar
- Laboratorie of Science and Technology of the Environment, University Mentouri Constantine, Chaabat Errassas, 25000 Constantine, Algeria
| | | | - T. Sehili
- Laboratorie of Science and Technology of the Environment, University Mentouri Constantine, Chaabat Errassas, 25000 Constantine, Algeria
| | - Henk Nugteren
- Products and Process Engineering, Department of Chemical Engineering, Delft University of Technology, Julianalaan 136, 2628 BL Delft, The Netherlands
| | - Peter W. Appel
- Products and Process Engineering, Department of Chemical Engineering, Delft University of Technology, Julianalaan 136, 2628 BL Delft, The Netherlands
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Djidjik R, Allam I, Louahchi S, Raaf N, Ouikhlef N, Boucharef A, Abdessemed A, Khaldoun N, Behaz N, Cherguelaine K, Tahiat A, Ladjouze Rezig A, Ghaffor M. AB0015 Association of BLK Polymorphism with Susceptibility to Rheumatoid Arthritis in an Algerian Population. Ann Rheum Dis 2014. [DOI: 10.1136/annrheumdis-2014-eular.1943] [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: 11/03/2022]
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Louahchi S, Djidjik R, Allam I, Raaf N, Abdessemed A, Khaldoun N, Behaz N, Ladjouze Rezig A, Ghaffor M. AB0018 Confirmation of Genetic Association between Rs6822844 at the Il2–Il21 Region and Rheumatoid Arthritis in an Algerian Population. Ann Rheum Dis 2014. [DOI: 10.1136/annrheumdis-2014-eular.1950] [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: 11/03/2022]
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Abdessemed A, khaldoun N, brahimi N, ladjouze A, mellal Y, tahiat T, allam I, Djidjik R, Ghaffor G. FRI0386 Erosive arthritis might be a marker of a severe disease in systemic sclerosis patients. Ann Rheum Dis 2013. [DOI: 10.1136/annrheumdis-2013-eular.1513] [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: 11/04/2022]
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