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Elewasy OA, Elrafie AS, Rasheed NA, Adli SH, Younis EM, Abdelwarith AA, Davies SJ, Ibrahim RE. The alleviative effect of Bacillus subtilis-supplemented diet against Vibrio cholerae infection in Nile tilapia (Oreochromis niloticus). Vet Res Commun 2024:10.1007/s11259-024-10418-9. [PMID: 38869748 DOI: 10.1007/s11259-024-10418-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/25/2024] [Accepted: 05/15/2024] [Indexed: 06/14/2024]
Abstract
Bacterial illness causes detrimental impacts on fish health and survival and finally economic losses for the aquaculture industry. Antibiotic medication causes microbial resistance, so alternative control strategies should be applied. In this work, we investigated the probiotic-medicated diet as an alternative control approach for antibiotics in treating Vibrio cholerae infection in Nile tilapia (Oreochromis niloticus). One hundred eighty fish (50 ± 2.5 g Mean ± SD) were allocated into six groups in glass aquariums (96 L) in triplicate for 10 days. Groups 1 (G1), G2, and G 3 were intraperitoneally (IP) injected with 0.5 mL sterilized tryptic soy broth and fed on a basal diet, basal diet contained B. subtilis (BS) (1 × 10 5 CFU/ kg-1 diet), and basal diet contained trimethoprim-sulfamethoxazole (TMP-SMX) (1.5 g/kg-1 diet), respectively. Additionally, G4, G5, and G6 were IP challenged with 0.5 mL of V. cholerae (1.5 × 107 CFU) and received the same feeding regime as G 1 to 3, respectively. The results exhibited that the V. cholera-infected fish exhibited skin hemorrhage, fin rot, and the lowest survival (63.33%). Additionally, lowered immune-antioxidant biomarkers (white blood cells count, serum bactericidal activity, phagocytic activity, phagocytic index, and lysozymes) with higher lipid peroxidation marker (malondialdehyde) were consequences of V. cholerae infection. Noteworthy, fish-fed therapeutic diets fortified with BS and TMP-SMX showed a substantial amelioration in the clinical signs and survival. The BS diet significantly improved (P < 0.05) the immune-antioxidant indices of the infected fish compared to the TMP-SMX diet. The current findings supported the use of a BS-enriched diet as an eco-friendly approach for the control of V. cholerae in O. niloticus.
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Affiliation(s)
- Omnia A Elewasy
- Microbiology Department, Animal Health Research Institute, Zagazig Branch (AHRI), Zagazig, Egypt
- Agriculture Research Center (ARC), Giza, Egypt
| | - Amira S Elrafie
- Microbiology Department, Animal Health Research Institute, Zagazig Branch (AHRI), Zagazig, Egypt
- Agriculture Research Center (ARC), Giza, Egypt
| | - Neveen A Rasheed
- Agriculture Research Center (ARC), Giza, Egypt
- Immunology Department, Animal Health Research Institute, Zagazig Branch (AHRI), Zagazig, Egypt
| | - Sara H Adli
- Microbiology Department, Animal Health Research Institute, Zagazig Branch (AHRI), Zagazig, Egypt
- Agriculture Research Center (ARC), Giza, Egypt
| | - Elsayed M Younis
- Department of Zoology, College of Science, King Saud University, PO Box 2455, 11451, Riyadh, Saudi Arabia
| | - Abdelwahab A Abdelwarith
- Department of Zoology, College of Science, King Saud University, PO Box 2455, 11451, Riyadh, Saudi Arabia
| | - Simon J Davies
- Aquaculture Nutrition Research Unit ANRU, Ryan Institute, College of Science and Engineering, Carna Research Station, University of Galway, Galway, H91V8Y1, Ireland
| | - Rowida E Ibrahim
- Department of Aquatic Animal Medicine, Faculty of Veterinary Medicine, Zagazig University, 44511, Zagazig, Egypt.
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Marbun KT, Sugata M, Purnomo JS, Dikson, Mudana SO, Jan TT, Jo J. Genomic Characterization and Safety Assessment of Bifidobacterium breve BS2-PB3 as Functional Food. J Microbiol Biotechnol 2024; 34:871-879. [PMID: 38494884 DOI: 10.4014/jmb.2311.11031] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/21/2023] [Revised: 12/13/2023] [Accepted: 12/14/2023] [Indexed: 03/19/2024]
Abstract
Our group had isolated Bifidobacterium breve strain BS2-PB3 from human breast milk. In this study, we sequenced the whole genome of B. breve BS2-PB3, and with a focus on its safety profile, various probiotic characteristics (presence of antibiotic resistance genes, virulence factors, and mobile elements) were then determined through bioinformatic analyses. The antibiotic resistance profile of B. breve BS2-PB3 was also evaluated. The whole genome of B. breve BS2-PB3 consisted of 2,268,931 base pairs with a G-C content of 58.89% and 2,108 coding regions. The average nucleotide identity and whole-genome phylogenetic analyses supported the classification of B. breve BS2-PB3. According to our in silico assessment, B. breve BS2-PB3 possesses antioxidant and immunomodulation properties in addition to various genes related to the probiotic properties of heat, cold, and acid stress, bile tolerance, and adhesion. Antibiotic susceptibility was evaluated using the Kirby-Bauer disk-diffusion test, in which the minimum inhibitory concentrations for selected antibiotics were subsequently tested using the Epsilometer test. B. breve BS2-PB3 only exhibited selected resistance phenotypes, i.e., to mupirocin (minimum inhibitory concentration/MIC >1,024 μg/ml), sulfamethoxazole (MIC >1,024 μg/ml), and oxacillin (MIC >3 μg/ml). The resistance genes against those antibiotics, i.e., ileS, mupB, sul4, mecC and ramA, were detected within its genome as well. While no virulence factor was detected, four insertion sequences were identified within the genome but were located away from the identified antibiotic resistance genes. In conclusion, B. breve BS2-PB3 demonstrated a sufficient safety profile, making it a promising candidate for further development as a potential functional food.
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Affiliation(s)
- Kristin Talia Marbun
- Department of Biology, Faculty of Science and Technology, Universitas Pelita Harapan, Tangerang 15811, Indonesia
| | - Marcelia Sugata
- Department of Biology, Faculty of Science and Technology, Universitas Pelita Harapan, Tangerang 15811, Indonesia
| | - Jonathan Suciono Purnomo
- Department of Biology, Faculty of Science and Technology, Universitas Pelita Harapan, Tangerang 15811, Indonesia
| | - Dikson
- Department of Biology, Faculty of Science and Technology, Universitas Pelita Harapan, Tangerang 15811, Indonesia
| | - Samuel Owen Mudana
- Department of Biology, Faculty of Science and Technology, Universitas Pelita Harapan, Tangerang 15811, Indonesia
| | - Tan Tjie Jan
- Department of Biology, Faculty of Science and Technology, Universitas Pelita Harapan, Tangerang 15811, Indonesia
| | - Juandy Jo
- Department of Biology, Faculty of Science and Technology, Universitas Pelita Harapan, Tangerang 15811, Indonesia
- Mochtar Riady Institute for Nanotechnology, Tangerang 15811, Indonesia
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Sarker MHR, Das SK, Sujon H, Moriyama M, Rahman MM, Uzzaman MN, Banu S, Shahid ASMSB, Das J, Khan SH, Chisti MJ, Faruque ASG, Ahmed T. Changing Water-Sanitation Determinants of Cholera over Two Decades in Bangladesh. Am J Trop Med Hyg 2023; 109:368-375. [PMID: 37277103 PMCID: PMC10397457 DOI: 10.4269/ajtmh.22-0575] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/04/2022] [Accepted: 03/10/2023] [Indexed: 06/07/2023] Open
Abstract
Cholera is a leading global public health threat, especially in developing countries. This study aimed to determine the changing determinants of cholera related to water-sanitation practices between 1994-1998 and 2014-2018 in Dhaka, Bangladesh. Data of all cause diarrhea cases were extracted from the Diarrheal Disease Surveillance System of the International Centre for Diarrhoeal Disease Research, Bangladesh, Dhaka, and analysis was performed among three groups: Vibrio cholerae detected as sole pathogen, V. cholerae detected as mixed infection, and detection of no common enteropathogen in stool specimens (reference). Using sanitary toilet, drinking tap water, drinking boiled water, family size greater than five, and slum dwelling were the main exposures. Overall, 3,380 (20.30%) and 1,290 (9.69%) patients were positive for V. cholerae during 1994-1998 and 2014-2018, respectively. In 1994-1998, use of sanitary toilet (adjusted odds ratio [aOR]: 0.86, 95% CI: 0.76-0.97) and drinking tap water (aOR: 0.81, 95% CI: 0.72-0.92) were found to be negatively associated and in 2014-2018, drinking tap water (aOR: 1.47, 95% CI: 1.21-1.78) and slum dwelling (aOR: 1.43, 95% CI: 1.10-1.86) were found to be positively associated with V. cholerae infection after adjusting for age, sex, monthly income, and seasonality. Because the determinants of cholera such as drinking tap water can change over time in developing cities, ameliorating the water, sanitation, and hygiene (WASH) situation is of paramount importance. In addition, in settings such as urban slums, where long-term WASH monitoring might be difficult to achieve, mass vaccination with oral cholera vaccine should be introduced to control cholera.
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Affiliation(s)
| | - Sumon Kumar Das
- Menzies School of Health Research, Charles Darwin University, Darwin, Australia
| | - Hasnat Sujon
- International Centre for Diarrhoeal Disease Research, Bangladesh, Dhaka, Bangladesh
- Infectious Disease and One Health Program, Hannover Medical School, Hannover, Germany
| | - Michiko Moriyama
- Graduate School of Biomedical and Health Sciences, Hiroshima University, Hiroshima, Japan
| | - Md Moshiur Rahman
- Graduate School of Biomedical and Health Sciences, Hiroshima University, Hiroshima, Japan
| | - Md. Nazim Uzzaman
- International Centre for Diarrhoeal Disease Research, Bangladesh, Dhaka, Bangladesh
- Usher Institute, University of Edinburgh, Edinburgh, United Kingdom
| | - Shakila Banu
- International Centre for Diarrhoeal Disease Research, Bangladesh, Dhaka, Bangladesh
| | - Abu SMSB Shahid
- International Centre for Diarrhoeal Disease Research, Bangladesh, Dhaka, Bangladesh
| | - Jui Das
- Institute for Social Science Research, The University of Queensland, Brisbane, Australia
| | - Soroar Hossain Khan
- International Centre for Diarrhoeal Disease Research, Bangladesh, Dhaka, Bangladesh
| | | | - ASG Faruque
- International Centre for Diarrhoeal Disease Research, Bangladesh, Dhaka, Bangladesh
| | - Tahmeed Ahmed
- International Centre for Diarrhoeal Disease Research, Bangladesh, Dhaka, Bangladesh
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Murtaza M, Aqib AI, Khan SR, Muneer A, Ali MM, Waseem A, Zaheer T, Al-Keridis LA, Alshammari N, Saeed M. Sodium Alginate-Based MgO Nanoparticles Coupled Antibiotics as Safe and Effective Antimicrobial Candidates against Staphylococcus aureus of Houbara Bustard Birds. Biomedicines 2023; 11:1959. [PMID: 37509597 PMCID: PMC10377686 DOI: 10.3390/biomedicines11071959] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/13/2023] [Revised: 06/27/2023] [Accepted: 07/03/2023] [Indexed: 07/30/2023] Open
Abstract
Alternative and modified therapeutic approaches are key elements in culminating antibiotic resistance. To this end, an experimental trial was conducted to determine the cytotoxicity and antibacterial potential of composites of magnesium oxide (MgO) nanoparticles and antibiotics stabilized in sodium alginate gel against multi-drug-resistant Staphylococcus aureus isolated from a houbara bustard. The characterization of preparations was carried out using X-ray diffraction (XRD), scanning transmissible electron microscopy (STEM), and Fourier-transform infrared spectroscopy (FTIR). The preparations used in this trial consisted of gel-stabilized MgO nanoparticles (MG), gel-stabilized tylosin (GT), gel-stabilized ampicillin (GA), gel-stabilized cefoxitin (GC), gel-stabilized MgO and tylosin (GMT), gel-stabilized MgO and cefoxitin (GMC), and gel-stabilized MgO and ampicillin (GMA). The study presents composites that cause a lesser extent of damage to DNA while significantly enhancing mitotic indices/phases compared to the other single component preparations with respect to the positive control (methyl methanesulphonate). It was also noted that there was a non-significant difference (p > 0.05) between the concentrations of composites and the negative control in the toxicity trial. Studying in parallel trials showed an increased prevalence, potential risk factors, and antibiotic resistance in S. aureus. The composites in a well diffusion trial showed the highest percentage increase in the zone of inhibition in the case of GT (58.42%), followed by GMT (46.15%), GC (40.65%), GMC (40%), GMA (28.72%), and GA (21.75%) compared to the antibiotics alone. A broth microdilution assay showed the lowest minimum inhibitory concentration (MIC) in the case of GMA (9.766 ± 00 µg/mL), followed by that of GT (13.02 ± 5.64 µg/mL), GMC (19.53 ± 0.00 µg/mL), GA (26.04 ± 11.28 µg/mL), GMT (26.04 ± 11.28 µg/mL), MG (39.06 ± 0.00 µg/mL), and GC (39.06 ± 0.00 µg/mL). The study thus concludes the effective tackling of multiple-drug-resistant S. aureus with sodium-alginate-stabilized MgO nanoparticles and antibiotics, whereas toxicity proved to be negligible for these composites.
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Affiliation(s)
- Maheen Murtaza
- Department of Zoology, Cholistan University of Veterinary and Animal Sciences, Bahawalpur 63100, Pakistan
| | - Amjad Islam Aqib
- Department of Medicine, Cholistan University of Veterinary and Animal Sciences, Bahawalpur 63100, Pakistan
| | - Shanza Rauf Khan
- Department of Chemistry, University of Agriculture, Faisalabad 38000, Pakistan
| | - Afshan Muneer
- Department of Zoology, Cholistan University of Veterinary and Animal Sciences, Bahawalpur 63100, Pakistan
- Department of Zoology, Government Sadiq College Women University, Bahawalpur 63100, Pakistan
| | - Muhammad Muddassir Ali
- Institute of Biochemistry and Biotechnology, University of Veterinary and Animal Sciences, Lahore 54000, Pakistan
| | - Ahmad Waseem
- Houbara Foundation International, Lal Sohanra Park, Bahawalpur 63100, Pakistan
- Oryx Falcon Veterinarian, Doha 6763, Qatar
| | - Tean Zaheer
- Department of Parasitology, University of Agriculture, Faisalabad 38000, Pakistan
| | - Lamya Ahmed Al-Keridis
- Biology Department, Faculty of Science, Princess Nourah bint Abdulrahman University, Riyadh 11564, Saudi Arabia
| | - Nawaf Alshammari
- Department of Biology, College of Science, University of Hail, Hail 55476, Saudi Arabia
| | - Mohd Saeed
- Department of Biology, College of Science, University of Hail, Hail 55476, Saudi Arabia
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Liu CH, Chuang YL, Gurunathan R, Hsieh CY, Dahms HU. Riverine antibacterial resistance gradient determined by environmental factors. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2023; 30:53685-53701. [PMID: 36864342 DOI: 10.1007/s11356-023-25529-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/18/2021] [Accepted: 01/19/2023] [Indexed: 06/19/2023]
Abstract
Polluted waterbodies such as rivers provide a pathway or reservoir for bacterial resistance. We studied water quality and bacterial antibacterial resistance along the subtropical Qishan River in Taiwan as a case study of environmental resistance spread in a pristine rural area. Human settlement densities increased generally from pristine mountain sites to the more polluted lowlands. Accordingly, as a working hypothesis, we expected the antibacterial resistance level to increase downstream. We collected sediment samples from 8 stations along the Qishan river and where the Qishan river reaches the Kaoping river. The samples were processed in the lab for bacteriological and physicochemical analysis. Antibacterial resistance was tested with common antibacterial. A comparison was made among the sites where isolates began to occur at the upstream (sites 1-6) with the downstream, including site 7 (Qishan town), site 8 (wastewater treatment plant), and site 9 (Kaoping river). The results of multivariate analysis for bacteriological and physicochemical parameters showed increasing water pollution levels downstream of the Qishan river. Bacterial isolates including Escherichia coli, Klebsiella pneumoniae, Serratia marcescens, Enterobacter sp., Acinetobacter sp., Staphylococcus spp., and Bacillus spp. were analyzed and tested in the study. Their percentage of occurrence varied at each site. The resistance level was determined from the growth inhibition zone diameter (disk diffusion) and the minimum inhibitory concentration (micro-dilution). The results indicated that antibacterial resistance was related to certain environmental factors. Besides, the usage pattern of different classes of antibacterial in different sections could alter trends of their resistance. Bacteria were found with increased resistance to antibacterial used in agriculture through the downstream sites. The WWTP discharging wastewater was demonstrated to be a hotspot of resistance in aquatic environments. In conclusion, bacterial resistance against antibacterial from the Qishan river has become a potential public health threat. This study could assist authorities by providing a reference for risk assessment and management of water quality in Kaohsiung city and southern Taiwan.
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Affiliation(s)
- Cheng-Han Liu
- Department of Biomedical Science and Environmental Biology, College of Life Science, Kaohsiung Medical University, Kaohsiung, 80708, Taiwan, Republic of China
- University Social Responsibility Team, Kaohsiung Medical University, Kaohsiung, 80708, Taiwan, Republic of China
- Research Center for Precision Environmental Medicine, Kaohsiung Medical University, Kaohsiung, 80708, Taiwan, Republic of China
| | - Yi-Lynne Chuang
- Department of Biomedical Science and Environmental Biology, College of Life Science, Kaohsiung Medical University, Kaohsiung, 80708, Taiwan, Republic of China
| | - Revathi Gurunathan
- Research Center for Precision Environmental Medicine, Kaohsiung Medical University, Kaohsiung, 80708, Taiwan, Republic of China
- Department of Medicinal and Applied Chemistry, College of Life Science, Kaohsiung Medical University, Kaohsiung, 80708, Taiwan, Republic of China
| | - Chi-Ying Hsieh
- Department of Environmental Science and Engineering, College of Engineering, National Pingtung University of Science and Technology, Pingtung, 91201, Taiwan, Republic of China.
| | - Hans-Uwe Dahms
- Department of Biomedical Science and Environmental Biology, College of Life Science, Kaohsiung Medical University, Kaohsiung, 80708, Taiwan, Republic of China.
- University Social Responsibility Team, Kaohsiung Medical University, Kaohsiung, 80708, Taiwan, Republic of China.
- Research Center for Precision Environmental Medicine, Kaohsiung Medical University, Kaohsiung, 80708, Taiwan, Republic of China.
- Department of Marine Biotechnology and Resources, College of Marine Sciences, National Sun Yat-sen University, Kaohsiung, 80424, Taiwan, Republic of China.
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Mazumder R, Hussain A, Phelan JE, Campino S, Haider SMA, Mahmud A, Ahmed D, Asadulghani M, Clark TG, Mondal D. Non-lactose fermenting Escherichia coli: Following in the footsteps of lactose fermenting E. coli high-risk clones. Front Microbiol 2022; 13:1027494. [PMID: 36406419 PMCID: PMC9669651 DOI: 10.3389/fmicb.2022.1027494] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/25/2022] [Accepted: 10/07/2022] [Indexed: 08/15/2023] Open
Abstract
Multi-resistant pathogenic strains of non-lactose fermenting Escherichia coli (NLF E. coli) are responsible for various intestinal and extraintestinal infections. Although several studies have characterised such strains using conventional methods, they have not been comprehensively studied at the genomic level. To address this gap, we used whole-genome sequencing (WGS) coupled with detailed microbiological and biochemical testing to investigate 17 NLF E. coli from a diagnostic centre (icddr,b) in Dhaka, Bangladesh. The prevalence of NLF E. coli was 10%, of which 47% (8/17) exhibited multi-drug resistant (MDR) phenotypes. All isolates (17/17) were confirmed as E. coli and could not ferment lactose sugar. WGS data analysis revealed international high-risk clonal lineages. The most prevalent sequence types (STs) were ST131 (23%), ST1193 (18%), ST12 (18%), ST501 (12%), ST167 (6%), ST73 (6%) and ST12 (6%). Phylogenetic analysis corroborated a striking clonal population amongst the studied NLF E. coli isolates. The predominant phylogroup detected was B2 (65%). The bla CTX-M-15 extended-spectrum beta-lactamase gene was present in 53% of isolates (9/17), whilst 64.7% (11/17) isolates were affiliated with pathogenic pathotypes. All extraintestinal pathogenic E. coli pathotypes demonstrated β-hemolysis. Our study underscores the presence of critical pathogens and MDR clones amongst non-lactose fermenting E. coli. We suggest that non-lactose fermenting E. coli be considered equally capable as lactose fermenting forms in causing intestinal and extraintestinal infections. Further, there is a need to undertake systematic, unbiased monitoring of predominant lineages amongst non-lactose fermenting E. coli that would help in better treatment and prevention strategies.
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Affiliation(s)
- Razib Mazumder
- Laboratory Sciences and Services Division, International Centre for Diarrhoeal Disease Research, Bangladesh (icddr,b), Dhaka, Bangladesh
| | - Arif Hussain
- Laboratory Sciences and Services Division, International Centre for Diarrhoeal Disease Research, Bangladesh (icddr,b), Dhaka, Bangladesh
| | - Jody E. Phelan
- Department of Infection Biology, London School of Hygiene and Tropical Medicine, London, United Kingdom
| | - Susana Campino
- Department of Infection Biology, London School of Hygiene and Tropical Medicine, London, United Kingdom
| | - S. M. Arefeen Haider
- Laboratory Sciences and Services Division, International Centre for Diarrhoeal Disease Research, Bangladesh (icddr,b), Dhaka, Bangladesh
| | - Araf Mahmud
- Laboratory Sciences and Services Division, International Centre for Diarrhoeal Disease Research, Bangladesh (icddr,b), Dhaka, Bangladesh
| | - Dilruba Ahmed
- Clinical Microbiology and Immunology Laboratory, Laboratory Sciences and Services Division, International Centre for Diarrhoeal Disease Research, Bangladesh (icddr,b), Dhaka, Bangladesh
| | - Md Asadulghani
- Biosafety and BSL3 Laboratory, Biosafety Office, International Centre for Diarrhoeal Disease Research, Bangladesh (icddr,b), Dhaka, Bangladesh
| | - Taane G. Clark
- Department of Infection Biology, London School of Hygiene and Tropical Medicine, London, United Kingdom
| | - Dinesh Mondal
- Laboratory Sciences and Services Division, International Centre for Diarrhoeal Disease Research, Bangladesh (icddr,b), Dhaka, Bangladesh
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Alkazaz SR, Khalil MI, Fadhel MN. Isolation and molecular identification of microorganisms isolated from soils contaminated with heavy metals in Mosul city. BIONATURA 2021. [DOI: 10.21931/rb/2021.06.04.10] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022] Open
Abstract
This research is concerned with organisms isolated from soils contaminated with heavy metals in industrial and residential areas in Mosul, the center of Nineveh Governorate, and the diagnosis of these organisms using molecular biology techniques. Samples were collected from four locations in the city between the industrial area and residential neighborhoods.
Soil samples were analyzed, and dilutions were prepared, then the dilutions were grown on potato extract and dextrose (PDA) medium for the development of fungi and Nutrient agar for bacterial development. The dilutions were planted by the casting method by three replications, then the process of purifying the fungal and bacterial colonies was carried out using the traditional methods. To diagnose these pure colonies using PCR technique, colonies of fungi were grown on the medium of PDA, and bacteria were grown on the medium of nutritious broth.
As a result, nine fungal species were diagnosed; two of them are new undiagnosed genera that have been registered in the gene bank, four of them contain genetic mutations, and three of them are known and previously diagnosed fungi. As for bacteria, two new strains were isolated and registered in the gene bank among the four diagnosed types. And some of these genera exhibited severe resistance to antibiotics, while others showed moderate resistance, in contrast to the control, which was very sensitive to antibiotics.
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Affiliation(s)
- Sana R. Alkazaz
- College of Environmental Sciences, University of Mosul, Mosul, Iraq, 41001
| | - Mohammad I. Khalil
- College of Environmental Sciences, University of Mosul, Mosul, Iraq, 41001
| | - Mazin N. Fadhel
- College of Environmental Sciences, University of Mosul, Mosul, Iraq, 41001
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Saremi M, Saremi L, Feizy F, Vafaei S, Lashkari A, Saltanatpour Z, Nazari RN. The Prevalence of VIM, IMP, and NDM-1 Metallo-beta-Lactamase Genes in Clinical Isolates of Klebsiella pneumoniae in Qom Province, Iran. JOURNAL OF MEDICAL MICROBIOLOGY AND INFECTIOUS DISEASES 2020. [DOI: 10.29252/jommid.8.1.34] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/31/2022] Open
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9
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Nathiya S, Janani R, Rajesh Kannan V. Potential of plant growth promoting Rhizobacteria to overcome the exposure of pesticide in Trigonella foenum - graecum (fenugreek leaves). BIOCATALYSIS AND AGRICULTURAL BIOTECHNOLOGY 2020. [DOI: 10.1016/j.bcab.2020.101493] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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10
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Yin J, Zheng W, Gao Y, Jiang C, Shi H, Diao X, Li S, Chen H, Wang H, Li R, Li A, Xia L, Yin Y, Stewart AF, Zhang Y, Fu J. Single-Stranded DNA-Binding Protein and Exogenous RecBCD Inhibitors Enhance Phage-Derived Homologous Recombination in Pseudomonas. iScience 2019; 14:1-14. [PMID: 30921732 PMCID: PMC6438905 DOI: 10.1016/j.isci.2019.03.007] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/24/2018] [Revised: 12/28/2018] [Accepted: 03/07/2019] [Indexed: 12/25/2022] Open
Abstract
The limited efficiency of the available tools for genetic manipulation of Pseudomonas limits fundamental research and utilization of this genus. We explored the properties of a lambda Red-like operon (BAS) from Pseudomonas aeruginosa phage Ab31 and a Rac bacteriophage RecET-like operon (RecTEPsy) from Pseudomonas syringae pv. syringae B728a. Compared with RecTEPsy, the BAS operon was functional at a higher temperature indicating potential to be a generic system for Pseudomonas. Owing to the lack of RecBCD inhibitor in the BAS operon, we added Redγ or Pluγ and found increased recombineering efficiencies in P. aeruginosa and Pseudomonas fluorescens but not in Pseudomonas putida and P. syringae. Overexpression of single-stranded DNA-binding protein enhanced recombineering in several contexts including RecET recombination in E. coli. The utility of these systems was demonstrated by engineering P. aeruginosa genomes to create an attenuated rhamnolipid producer. Our work enhances the potential for functional genomics in Pseudomonas. The BAS operon is a generic recombineering system for Pseudomonas species Single-stranded DNA-binding proteins (SSBs) can stimulate homologous recombination The heterologous gam genes can inhibit RecBCD function in Pseudomonas
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Affiliation(s)
- Jia Yin
- Shandong University-Helmholtz Institute of Biotechnology, State Key Laboratory of Microbial Technology, Suzhou Institute of Shandong University, 266235 Qingdao, China; Hunan International Joint Laboratory of Animal Intestinal Ecology and Health, Laboratory of Animal Nutrition and Human Health, College of Life Sciences, Hunan Normal University, 410081 Changsha, China
| | - Wentao Zheng
- Shandong University-Helmholtz Institute of Biotechnology, State Key Laboratory of Microbial Technology, Suzhou Institute of Shandong University, 266235 Qingdao, China
| | - Yunsheng Gao
- Shandong University-Helmholtz Institute of Biotechnology, State Key Laboratory of Microbial Technology, Suzhou Institute of Shandong University, 266235 Qingdao, China
| | - Chanjuan Jiang
- Shandong University-Helmholtz Institute of Biotechnology, State Key Laboratory of Microbial Technology, Suzhou Institute of Shandong University, 266235 Qingdao, China
| | - Hongbo Shi
- Shandong University-Helmholtz Institute of Biotechnology, State Key Laboratory of Microbial Technology, Suzhou Institute of Shandong University, 266235 Qingdao, China
| | - Xiaotong Diao
- Shandong University-Helmholtz Institute of Biotechnology, State Key Laboratory of Microbial Technology, Suzhou Institute of Shandong University, 266235 Qingdao, China
| | - Shanshan Li
- Shandong University-Helmholtz Institute of Biotechnology, State Key Laboratory of Microbial Technology, Suzhou Institute of Shandong University, 266235 Qingdao, China
| | - Hanna Chen
- Hunan International Joint Laboratory of Animal Intestinal Ecology and Health, Laboratory of Animal Nutrition and Human Health, College of Life Sciences, Hunan Normal University, 410081 Changsha, China
| | - Hailong Wang
- Shandong University-Helmholtz Institute of Biotechnology, State Key Laboratory of Microbial Technology, Suzhou Institute of Shandong University, 266235 Qingdao, China
| | - Ruijuan Li
- Shandong University-Helmholtz Institute of Biotechnology, State Key Laboratory of Microbial Technology, Suzhou Institute of Shandong University, 266235 Qingdao, China
| | - Aiying Li
- Shandong University-Helmholtz Institute of Biotechnology, State Key Laboratory of Microbial Technology, Suzhou Institute of Shandong University, 266235 Qingdao, China
| | - Liqiu Xia
- Hunan International Joint Laboratory of Animal Intestinal Ecology and Health, Laboratory of Animal Nutrition and Human Health, College of Life Sciences, Hunan Normal University, 410081 Changsha, China
| | - Yulong Yin
- Hunan International Joint Laboratory of Animal Intestinal Ecology and Health, Laboratory of Animal Nutrition and Human Health, College of Life Sciences, Hunan Normal University, 410081 Changsha, China; Chinese Academy of Science, Institute of Subtropical Agriculture, Research Center for Healthy Breeding of Livestock and Poultry, Hunan Engineering and Research Center of Animal and Poultry Science and Key Laboratory for Agroecological Processes in Subtropical Region, Scientific Observation and Experimental Station of Animal Nutrition and Feed Science in South-Central, Ministry of Agriculture, 410125 Changsha, China
| | - A Francis Stewart
- Biotechnology Research Center, Center for Molecular and Cellular Bioengineering, Dresden University of Technology, BioInnovationsZentrum, Tatzberg 47-51, 01307 Dresden, Germany.
| | - Youming Zhang
- Shandong University-Helmholtz Institute of Biotechnology, State Key Laboratory of Microbial Technology, Suzhou Institute of Shandong University, 266235 Qingdao, China.
| | - Jun Fu
- Shandong University-Helmholtz Institute of Biotechnology, State Key Laboratory of Microbial Technology, Suzhou Institute of Shandong University, 266235 Qingdao, China.
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11
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Amin R, Rahman SS, Hossain M, Choudhury N. Physicochemical and Microbiological Qualities' Assessment of Popular Bangladeshi Mango Fruit Juice. Open Microbiol J 2018; 12:135-147. [PMID: 29785220 PMCID: PMC5960746 DOI: 10.2174/1874285801812010135] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2018] [Revised: 04/08/2018] [Accepted: 04/09/2018] [Indexed: 11/27/2022] Open
Abstract
Introduction: Mango juice has always been considered as a delicious, nutritious popular drink, but processed juice may not always be safe due to chemical and microbial risks. Determination of physicochemical and microbiological qualities of some packed mango juices of Bangladesh will help consumers to know the present scenario. Material and Methods: Six commercially available different juice samples were collected from the market. Carbohydrate profiles were determined using HPLC, crude protein content was calculated using the Kjeldahl method and other parameters were determined by standard AOAC methods. Standard culture techniques were followed to assess the total viable count (TVC), E. coli and other fecal coliforms. Results: The highest quantity of monosaccharide (58.88%) was recorded in the AC1ME5 brand, while the lowest in Homemade (5.648%) and MN1GL2 (9.867%). The maximum content of acidity recorded was 0.24% and minimum 0.21%. The TSS content of all samples varied from 19% to 12%. The highest quantity 6.87% and the lowest 3.62% of reducing sugar were recorded. Most of the mango juices were low in protein and very low/negligible in fat content. Total viable count of different types of fruit juices varied from 1×103 - 3×103 CFU/ml. No significant amount of E. coli and fecal coliform was detected. Conclusion: It can be concluded that the locally available mango juices contain a safe level of nutritional and microbial elements for human consumption, but not highly satisfactory.
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Affiliation(s)
- Ruhul Amin
- Biotechnology Program, Department of Mathematics and Natural Sciences, BRAC University, Dhaka-1212, Bangladesh.,Perfetti Van Melle Bangladesh Pvt. Limited, Mouza# 7 NO, Kewa (Beraider Chala), Gilar Chala Rd, Vill# Beraider Chala, P.O.# Gilaberaid, P.S.# Sreepur, Gazipur-1740, Bangladesh
| | - Shafkat S Rahman
- Biotechnology Program, Department of Mathematics and Natural Sciences, BRAC University, Dhaka-1212, Bangladesh.,United Surgical (BD) Ltd, Reliance Industrial Park, Plot# 659-661, Islampur, Kadda, Gazipur-1702, Bangladesh
| | - Mahboob Hossain
- Microbiology Program, Department of Mathematics and Natural Sciences, BRAC University, Dhaka-1212, Bangladesh
| | - Naiyyum Choudhury
- Biotechnology Program, Department of Mathematics and Natural Sciences, BRAC University, Dhaka-1212, Bangladesh.,Bangladesh Atomic Energy Regulatory Authority (BAERA), E-12/A, Shahid Shahabuddin Shorok, Dhaka-1207, Bangladesh.,Microbiology Program, Department of Mathematics and Natural Sciences, BRAC University, Dhaka-1212, Bangladesh
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12
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Rahman SS, Siddique R, Tabassum N. Isolation and identification of halotolerant soil bacteria from coastal Patenga area. BMC Res Notes 2017; 10:531. [PMID: 29084602 PMCID: PMC5663095 DOI: 10.1186/s13104-017-2855-7] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/13/2017] [Accepted: 10/23/2017] [Indexed: 11/10/2022] Open
Abstract
Objective Halotolerant bacteria have multiple uses viz. fermentation with lesser sterility control and industrial production of bioplastics. Moreover, it may increase the crop productivity of coastal saline lands in Bangladesh by transferring the salt tolerant genes into the plants. The study focused on the isolation and identification of the halotolerant bacteria from three soil samples, collected from coastal Patenga area. The samples were inoculated in nutrient media containing a wide range of salt concentrations. Results All the samples showed 2, 4 and 6% (w/v) salt tolerance. The isolates from Patenga soil (4, 6%) and beach soil (2%) showed catalase activity and all the isolates showed negative results for oxidase activity, indole production, lactose and motility. All the samples provided positive results for dextrose fermentation. Other tests provided mixed results. Based on the morphological characteristics, biochemical tests and ABIS software analysis the isolates fall within the Enterobacteriaceae, Clostridium and Corynebacterium, with a predominance of Vibrios. Overall the isolates can be considered as mild halotolerant, with the best growth observed at lower salinities and no halophilism detected. Among many possibilities, the genes responsible for the salt tolerant trait in these species can be identified, extracted and inserted into the crop plants to form a transgenic plant to result in higher yield for the rest of the year.
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Affiliation(s)
- Shafkat Shamim Rahman
- Biotechnology Program, Department of Mathematics and Natural Sciences, BRAC University, 66, Mohakhali, Dhaka, 1212, Bangladesh. .,United Surgical (BD) Ltd, Plot# 659-661, Islampur, Kadda, Gazipur, 1702, Bangladesh.
| | - Romana Siddique
- Biotechnology Program, Department of Mathematics and Natural Sciences, BRAC University, 66, Mohakhali, Dhaka, 1212, Bangladesh
| | - Nafisa Tabassum
- Biotechnology Program, Department of Mathematics and Natural Sciences, BRAC University, 66, Mohakhali, Dhaka, 1212, Bangladesh
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