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Yang B, Wang Y, Yan X, Fen Q, Chi Y. Primer Exchange Reaction (PER)-Based Construction of Scaffold for Low-Speed Centrifugation-Based Isolation and Quantitative Analysis of P. aeruginosa and its application in analyzing uterine secretions with intrauterine adhesion. Appl Biochem Biotechnol 2024; 196:4038-4048. [PMID: 37819459 DOI: 10.1007/s12010-023-04742-0] [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] [Accepted: 09/15/2023] [Indexed: 10/13/2023]
Abstract
Efficient isolation and sensitive quantification of Pseudomonas aeruginosa (P. aeruginosa) are crucial for identifying intrauterine infections and preventing the occurrence of intrauterine adhesion (IUA). However, traditional approaches, such as culture-based approach, are time-consuming. Herein, we constructed a detection scaffold by using primer exchange reaction (PER) that integrated the low-speed centrifugation-based isolation and sensitive quantification of target pathogenic bacteria. The established approach possesses several advantages, including (i) the approach is capable of simultaneous isolation and sensitive quantification of target bacteria; (ii) low-speed centrifugation or even manual equipment could be used to isolate target bacteria; and (iii) a low limit of detection was obtained as 54 cfu/mL. Based on this, the approach is a promising approach in analyzing P. aeruginosa from uterine secretions with IUA.
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Affiliation(s)
- Boping Yang
- Department of General Gynecology, Women and Children's Hospital of Chongqing Medical University, Chongqing Health Center for Women and Children, Chongqing, 400037, People's Republic of China
| | - Ying Wang
- Department of General Gynecology, Women and Children's Hospital of Chongqing Medical University, Chongqing Health Center for Women and Children, Chongqing, 400037, People's Republic of China
| | - Xiaohuan Yan
- Department of General Gynecology, Women and Children's Hospital of Chongqing Medical University, Chongqing Health Center for Women and Children, Chongqing, 400037, People's Republic of China
| | - Qian Fen
- Hospital-Acquired Infection Control Department, Women and Children's Hospital of Chongqing Medical University, Chongqing Health Center for Women and Children, No. 120 Longshan Street, Yubei District, Chongqing, 400037, People's Republic of China.
| | - Yugang Chi
- Department of General Gynecology, Women and Children's Hospital of Chongqing Medical University, Chongqing Health Center for Women and Children, Chongqing, 400037, People's Republic of China.
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Saleh EAM, Ali E, Muxamadovna GM, Kassem AF, Kaur I, Kumar A, Jabbar HS, Alwaily ER, Elawady A, Omran AA. CRISPR/Cas-based colorimetric biosensors: a promising tool for the diagnosis of bacterial foodborne pathogens in food products. ANALYTICAL METHODS : ADVANCING METHODS AND APPLICATIONS 2024; 16:3448-3463. [PMID: 38804827 DOI: 10.1039/d4ay00578c] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/29/2024]
Abstract
Some physical phenomena and various chemical substances newly introduced in nanotechnology have allowed scientists to develop valuable devices in the field of food sciences. Regarding such progress, the identification of foodborne pathogenic microorganisms is an imperative subject nowadays. These bacterial species have been found to cause severe health impacts after food ingestion and can result in high mortality in acute cases. The rapid detection of foodborne bacterial species at low concentrations is in high demand in recent diagnostics. CRISPR/Cas-mediated biosensors possess the potential to overcome several challenges in classical assays such as complex pretreatments, long turnaround time, and insensitivity. Among them, colorimetric nanoprobes based on the CRISPR strategy afford promising devices for POCT (point-of-care testing) since they can be visualized with the naked eye and do not require diagnostic apparatus. In this study, we briefly classify and discuss the working principles of the different CRISPR/Cas protein agents that have been employed in biosensors so far. We assess the current status of the CRISPR system, specifically focusing on colorimetric biosensing platforms. We discuss the utilization of each Cas effector in the detection of foodborne pathogens and examine the restrictions of the existing technology. The challenges and future opportunities are also indicated and addressed.
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Affiliation(s)
- Ebraheem Abdu Musad Saleh
- Department of Chemistry, College of Science and Humanities in Al-Kharj, Prince Sattam Bin Abdulaziz University, Al-Kharj, 11942, Saudi Arabia.
| | - Eyhab Ali
- Al-Zahraa University for Women, Karbala, Iraq
| | | | - Asmaa F Kassem
- Department of Chemistry, College of Science and Humanities in Al-Kharj, Prince Sattam Bin Abdulaziz University, Al-Kharj, 11942, Saudi Arabia
- Chemistry of Natural and Microbial Products Department, Pharmaceutical and Drug Industries Research Institute, National Research Centre, Dokki, Cairo 12622, Egypt
| | - Irwanjot Kaur
- Department of Biotechnology and Genetics, Jain (Deemed-to-be) University, Bengaluru, Karnataka-560069, India
- Department of Allied Healthcare and Sciences, Vivekananda Global University, Jaipur, Rajasthan-303012, India
| | - Abhinav Kumar
- Department of Nuclear and Renewable Energy, Ural Federal University Named After the First President of Russia Boris Yeltsin, Yekaterinburg 620002, Russia
| | - Hijran Sanaan Jabbar
- Department of Chemistry, College of Science, Salahaddin University-Erbil, Erbil, Kurdistan Region, Iraq
| | - Enas R Alwaily
- Microbiology Research Group, College of Pharmacy, Al-Ayen University, Thi-Qar, Iraq
| | - Ahmed Elawady
- College of Technical Engineering, The Islamic University of Al Diwaniyah, Al Diwaniyah, Iraq
- College of Technical Engineering, The Islamic University, Najaf, Iraq
- College of Technical Engineering, The Islamic University of Babylon, Babylon, Iraq
| | - Alaa A Omran
- Department of Engineering, AL-Nisour University College, Baghdad, Iraq
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Zhang W, Qu H, Wu X, Shi J, Wang X. Rapid, sensitive, and user-friendly detection of Pseudomonas aeruginosa using the RPA/CRISPR/Cas12a system. BMC Infect Dis 2024; 24:458. [PMID: 38689239 PMCID: PMC11061930 DOI: 10.1186/s12879-024-09348-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/14/2023] [Accepted: 04/24/2024] [Indexed: 05/02/2024] Open
Abstract
BACKGROUND Pseudomonas aeruginosa (P. aeruginosa) is a life-threatening bacterium known for its rapid development of antibiotic resistance, posing significant challenges in clinical treatment, biosecurity, food safety, and environmental monitoring. Early and accurate identification of P. aeruginosa is crucial for effective intervention. METHODS The lasB gene of P. aeruginosa was selected as the target for the detection. RPA primers for recombinase polymerase amplification (RPA) and crRNA for CRISPR/Cas12a detection were meticulously designed to target specific regions within the lasB gene. The specificity of the RPA/CRISPR/Cas12a detection platform was assessed using 15 strains. The detection limit of RPA/CRISPR/Cas12a detection platform was determined by utilizing a pseudo-dilution series of the P. aeruginosa DNA. The practical applicability of the RPA/CRISPR/Cas12a detection platform was validated by comparing it with qPCR on 150 samples (35 processed meat product samples, 55 cold seasoned vegetable dishes, 60 bottled water samples). RESULTS The RPA/CRISPR/Cas12a detection platform demonstrates high specificity, with no cross-reactivity with non-P. aeruginosa strains. This assay exhibits remarkable sensitivity, with a limit of detection (LOD) of 100 copies/µL for fluorescence assay and 101 copies/µL for the LFTS method. Furthermore, the performance of the RPA/CRISPR/Cas12a detection platform is comparable to that of the well-established qPCR method, while offering advantages such as shorter reaction time, simplified operation, and reduced equipment requirements. CONCLUSIONS The RPA/CRISPR/Cas12a detection platform presents a straightforward, accurate, and sensitive approach for early P. aeruginosa detection and holds great promise for diverse applications requiring rapid and reliable identification.
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Affiliation(s)
- Wenjing Zhang
- Medical college, Henan University of Chinese Medicine, No.156, Jinshui East Road, Zhengzhou, 450046, Henan, China.
| | - Hai Qu
- Autobio Diagnostics Co., Ltd., No.199, 15th Ave, Zhengzhou, 450016, Henan, China
| | - Xin Wu
- Medical college, Henan University of Chinese Medicine, No.156, Jinshui East Road, Zhengzhou, 450046, Henan, China
| | - Jingjing Shi
- Pharmacy College, Henan University of Chinese Medicine, No.156, Jinshui East Road, Zhengzhou, 450046, Henan, China
| | - Xinling Wang
- Pharmacy College, Henan University of Chinese Medicine, No.156, Jinshui East Road, Zhengzhou, 450046, Henan, China.
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Hu J, Liang L, He M, Lu Y. Sensitive and Direct Analysis of Pseudomonas aeruginosa through Self-Primer-Assisted Chain Extension and CRISPR-Cas12a-Based Color Reaction. ACS OMEGA 2023; 8:34852-34858. [PMID: 37779973 PMCID: PMC10536833 DOI: 10.1021/acsomega.3c04180] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/13/2023] [Accepted: 08/31/2023] [Indexed: 10/03/2023]
Abstract
Pseudomonas aeruginosa (P. aeruginosa) is a common opportunistic Gram-negative pathogen that may cause infections to immunocompromised patients. However, sensitive and reliable analysis of P. aeruginosa remains a huge challenge. In this method, target recognition assists the formation of a self-primer and initiates single-stranded chain production. The produced single-stranded DNA chain is identified by CRISPR-Cas12a, and consequently, the trans-cleavage activity of the Cas12a enzyme is activated to parallelly digest Ag+ aptamer sequences that are chelated with silver ions (Ag+). The released Ag+ reacted with 3,3',5,5'-tetramethylbenzidine (TMB) for coloring. Compared with the traditional color developing strategies, which mainly rely on the DNA hybridization, the color developing strategy in this approach exhibits a higher efficiency due to the robust trans-cleavage activity of the Cas12a enzyme. Consequently, the method shows a low limit of detection of a wide detection of 5 orders of magnitudes and a low limit of detection of 21 cfu/mL, holding a promising prospect in early diagnosis of infections. Herein, we develop a sensitive and reliable method for direct and colorimetric detection of P. aeruginosa by integrating self-primer-assisted chain production and CRISPR-Cas12a-based color reaction and believe that the established approach will facilitate the development of bacteria-analyzing sensors.
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Affiliation(s)
- Jiangchun Hu
- Science
and Technology Innovation Center, Guangyuan
Central Hospital, Guangyuan
City 628000, Sichuan
Province, China
| | - Ling Liang
- Science
and Technology Innovation Center, Guangyuan
Central Hospital, Guangyuan
City 628000, Sichuan
Province, China
| | - Mingfang He
- Science
and Technology Innovation Center, Guangyuan
Central Hospital, Guangyuan
City 628000, Sichuan
Province, China
| | - Yongping Lu
- Science
and Technology Innovation Center, Guangyuan
Central Hospital, Guangyuan
City 628000, Sichuan
Province, China
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Shivaram KB, Bhatt P, Applegate B, Simsek H. Bacteriophage-based biocontrol technology to enhance the efficiency of wastewater treatment and reduce targeted bacterial biofilms. THE SCIENCE OF THE TOTAL ENVIRONMENT 2023; 862:160723. [PMID: 36496019 DOI: 10.1016/j.scitotenv.2022.160723] [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: 10/04/2022] [Revised: 11/13/2022] [Accepted: 12/02/2022] [Indexed: 06/17/2023]
Abstract
Wastewater treatment is an essential process for public health and a sustainable ecosystem. Inadequate wastewater treatment can lead to the release of organic and inorganic pollutants and pathogenic bacteria into the receiving waters which could be further utilized for recreation purposes. The interaction between bacteriophage and bacteria in a wastewater treatment plant plays a major role in maintaining the treatment process. Phage therapy has been proposed as an alternative to conventional treatment methods as bacteriophages can be used on specific targets and leave useful bacteria unharmed. The bacterial species, which are responsible for bulking, foaming, and biofilm formation in a wastewater treatment plant (WWTP) have been identified and their respective phages are isolated to control their growth. Phages with lytic life cycles are preferred to lysogenic. Lytic phages can kill the specific target as they lyse the cell, infect most of the hosts, and have an immediate effect on controlling problems caused by bacteria in a WWTP. The bacteriophages such as T7, SPI1, GTE7, PhaxI, MAG1, MAG2, ϕPh_Se01, ϕPh_Se02, and Bxb1 have been investigated for the removal of bacterial biofilms from wastewater. Novel experimental setups have improved the efficiency of phage therapy in small-scale and pilot-scale experiments. Much more in-depth knowledge of the microbial community and their interaction would help promote the usage of phage therapy in large-scale wastewater treatments. This paper has covered the recent advancements in phage therapy as an effective biocontrol of pathogenic bacteria in the wastewater treatment process and has looked at certain shortcomings that have to be improved.
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Affiliation(s)
- Karthik Basthi Shivaram
- Department of Agricultural & Biological Engineering, Purdue University, West Lafayette, IN 47906, USA
| | - Pankaj Bhatt
- Department of Agricultural & Biological Engineering, Purdue University, West Lafayette, IN 47906, USA
| | - Bruce Applegate
- Department of Food Science, Purdue University, West Lafayette, IN 47906, USA
| | - Halis Simsek
- Department of Agricultural & Biological Engineering, Purdue University, West Lafayette, IN 47906, USA.
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Wang C, Ye Q, Ding Y, Zhang J, Gu Q, Pang R, Zhao H, Wang J, Wu Q. Detection of Pseudomonas aeruginosa Serogroup G Using Real-Time PCR for Novel Target Genes Identified Through Comparative Genomics. Front Microbiol 2022; 13:928154. [PMID: 35814691 PMCID: PMC9263582 DOI: 10.3389/fmicb.2022.928154] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/25/2022] [Accepted: 06/07/2022] [Indexed: 11/20/2022] Open
Abstract
Accurate serotyping is essential for effective infection control. Pseudomonas aeruginosa serogroup G is one of the most common serogroups found in water. Conventional serotyping methods are not standardized and have several shortcomings. Therefore, a robust method for rapidly identifying P. aeruginosa serotypes is required. This study established a real-time PCR method for identifying P. aeruginosa serogroup G strains using novel target gene primers based on comparative genomic analysis. A total of 343 genome sequences, including 16 P. aeruginosa serogroups and 67 other species, were analyzed. Target genes identified were amplified using real-time PCR for detecting P. aeruginosa serogroup G strains. Eight serogroup G genes, PA59_01276, PA59_01887, PA59_01888, PA59_01891, PA59_01894, PA59_04268, PA59_01892, and PA59_01896, were analyzed to determine specific targets. A real-time fluorescence quantitative PCR method, based on the novel target PA59_01276, was established to detect and identify serogroup G strains. The specificity of this method was confirmed using P. aeruginosa serogroups and non-P. aeruginosa species. The sensitivity of this real-time PCR method was 4 × 102 CFU/mL, and it could differentiate and detect P. aeruginosa serogroup G in the range of 4.0 × 103–4.0 × 108 CFU/mL in artificially contaminated drinking water samples without enrichment. The sensitivity of these detection limits was higher by 1–3 folds compared to that of the previously reported PCR methods. In addition, the G serum group was accurately detected using this real-time PCR method without interference by high concentrations of artificially contaminated serum groups F and D. These results indicate that this method has high sensitivity and accuracy and is promising for identifying and rapidly detecting P. aeruginosa serogroup G in water samples. Moreover, this research will contribute to the development of effective vaccines and therapies for infections caused by multidrug-resistant P. aeruginosa.
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Affiliation(s)
- Chufang Wang
- College of Food Science, South China Agricultural University, Guangzhou, China
- Guangdong Provincial Key Laboratory of Microbial Safety and Health, State Key Laboratory of Applied Microbiology Southern China, Institute of Microbiology, Guangdong Academy of Sciences, Guangzhou, China
- Key Laboratory of Agricultural Microbiomics and Precision Application, Ministry of Agriculture and Rural Affairs, Guangdong Academy of Sciences, Guangzhou, China
| | - Qinghua Ye
- Guangdong Provincial Key Laboratory of Microbial Safety and Health, State Key Laboratory of Applied Microbiology Southern China, Institute of Microbiology, Guangdong Academy of Sciences, Guangzhou, China
- Key Laboratory of Agricultural Microbiomics and Precision Application, Ministry of Agriculture and Rural Affairs, Guangdong Academy of Sciences, Guangzhou, China
| | - Yu Ding
- Guangdong Provincial Key Laboratory of Microbial Safety and Health, State Key Laboratory of Applied Microbiology Southern China, Institute of Microbiology, Guangdong Academy of Sciences, Guangzhou, China
- Key Laboratory of Agricultural Microbiomics and Precision Application, Ministry of Agriculture and Rural Affairs, Guangdong Academy of Sciences, Guangzhou, China
| | - Jumei Zhang
- Guangdong Provincial Key Laboratory of Microbial Safety and Health, State Key Laboratory of Applied Microbiology Southern China, Institute of Microbiology, Guangdong Academy of Sciences, Guangzhou, China
- Key Laboratory of Agricultural Microbiomics and Precision Application, Ministry of Agriculture and Rural Affairs, Guangdong Academy of Sciences, Guangzhou, China
| | - Qihui Gu
- Guangdong Provincial Key Laboratory of Microbial Safety and Health, State Key Laboratory of Applied Microbiology Southern China, Institute of Microbiology, Guangdong Academy of Sciences, Guangzhou, China
- Key Laboratory of Agricultural Microbiomics and Precision Application, Ministry of Agriculture and Rural Affairs, Guangdong Academy of Sciences, Guangzhou, China
| | - Rui Pang
- Guangdong Provincial Key Laboratory of Microbial Safety and Health, State Key Laboratory of Applied Microbiology Southern China, Institute of Microbiology, Guangdong Academy of Sciences, Guangzhou, China
- Key Laboratory of Agricultural Microbiomics and Precision Application, Ministry of Agriculture and Rural Affairs, Guangdong Academy of Sciences, Guangzhou, China
| | - Hui Zhao
- Guangdong Provincial Key Laboratory of Microbial Safety and Health, State Key Laboratory of Applied Microbiology Southern China, Institute of Microbiology, Guangdong Academy of Sciences, Guangzhou, China
- Key Laboratory of Agricultural Microbiomics and Precision Application, Ministry of Agriculture and Rural Affairs, Guangdong Academy of Sciences, Guangzhou, China
| | - Juan Wang
- College of Food Science, South China Agricultural University, Guangzhou, China
- Guangdong Provincial Key Laboratory of Microbial Safety and Health, State Key Laboratory of Applied Microbiology Southern China, Institute of Microbiology, Guangdong Academy of Sciences, Guangzhou, China
- Key Laboratory of Agricultural Microbiomics and Precision Application, Ministry of Agriculture and Rural Affairs, Guangdong Academy of Sciences, Guangzhou, China
- *Correspondence: Juan Wang,
| | - Qingping Wu
- College of Food Science, South China Agricultural University, Guangzhou, China
- Guangdong Provincial Key Laboratory of Microbial Safety and Health, State Key Laboratory of Applied Microbiology Southern China, Institute of Microbiology, Guangdong Academy of Sciences, Guangzhou, China
- Key Laboratory of Agricultural Microbiomics and Precision Application, Ministry of Agriculture and Rural Affairs, Guangdong Academy of Sciences, Guangzhou, China
- Qingping Wu,
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Phenotypic and molecular characterization of two lytic bacteriophages against multidrug resistant Pseudomonas aeruginosa. Saudi J Biol Sci 2022. [DOI: 10.1016/j.sjbs.2022.02.051] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022] Open
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El-Wafai NA, Alharbi NK, Ezzat Ahmed A, El-Zamik FI, Mahgoub SA, Atia AM, Abdel-Hamid EA. Controlling of multidrug resistant Aeromonas hydrophila infected Nile tilapia (Oreochromis niloticus) using Ah03 and Ah04 virulent bacteriophages isolates. Saudi J Biol Sci 2022. [DOI: 10.1016/j.sjbs.2022.02.050] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022] Open
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M Marei E, El-Afifi SI, Hammad AM. Biochemical and Molecular Characteristics of Pc1 Virulent Phage Isolate Infecting <i>Pectobacterium carotovorum</i>. Pak J Biol Sci 2021; 23:1481-1486. [PMID: 33274878 DOI: 10.3923/pjbs.2020.1481.1486] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
BACKGROUND AND OBJECTIVE Pectobacterium carotovorum subsp. carotovorum is a plant-pathogenic bacterium. It is a post-harvest pathogen and causes soft rot diseases in infected plants. Different virulent bacteriophages have been isolated from different regions in the world. These bacteriophages were tolerant to high concentrations of calcium chloride and magnesium chloride. Whereas, the high concentrations of zinc chloride and aluminum chloride decreased the activity and stability of phages. Therefore, the present research aimed to study the biology of P. carotovorum phage (Pc1) by using a one-step growth experiment, its stability to different concentrations of some chemicals and molecular characteristics of this phage isolate. MATERIALS AND METHODS One step growth experiment, chemical stability, and molecular characteristics by using RAPD-PCR of P. carotovorum phage (Pc1) were studied. RESULTS The P. carotovorum phage (Pc1) isolate was found to have a latent period of 20 min and its burst size is about 92 pfu cell-1. Calcium chloride, magnesium chloride, and copper sulphate (from 0.1-0.5 mM) increased the infectivity of Pc1 phage, while, zinc chloride in the same concentrations reduced its infectivity. RAPD-PCR amplification was indicated that the total amplified products were 32 bands with size ranged from 0.179-2.365 Kbp. CONCLUSION Since, zinc chloride (at concentrations of 0.1-0.5 mM) reduced infectivity of Pc1 phage isolate, therefore, any chemical compounds containing zinc must be avoided in designing biocontrol strategy by using phages against soft rot bacterium (P. carotovorum) in potatoes.
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Alharbi NM, Ziadi MM. Wastewater as a fertility source for novel bacteriophages against multi-drug resistant bacteria. Saudi J Biol Sci 2021; 28:4358-4364. [PMID: 34354420 PMCID: PMC8324929 DOI: 10.1016/j.sjbs.2021.04.025] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2020] [Revised: 04/07/2021] [Accepted: 04/08/2021] [Indexed: 01/21/2023] Open
Abstract
Antibiotic resistance is a common and serious public health worldwide. As an alternative to antibiotics, bacteriophage (phage) therapy offers one of the best solutions to antibiotic resistance. Bacteriophages survive where their bacterial hosts are found; thus, they exist in almost all environments and their applications are quite varied in the medical, environmental, and industrial fields. Moreover, a single phage or a mixture of phages can be used in phage therapy; mixed phages tend to be more effective in reducing the number and/or activity of pathogenic bacteria than that of a single phage.
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Affiliation(s)
- Najwa M. Alharbi
- College of Science, King Abdulaziz University, Jeddah, Saudi Arabia
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